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CHNG I: LA CHN GII PHP KT CU.31.1 .C s quy phm v tiu chun thit k.....31.2 .Vt liu s dng....31.3 .La chn gii php kt cu sn.....31.4 .La chn kch thc, chiu dy sn......41.4.1 Kch thc sn mi.....41.4.2 Kch thc sn tng....41.5 .La chn gii php kt cu chu lc.....61.6 .La chn kch thc cc tit din.........71.6.1 Kch thc tit din dm.....71.6.2 Kch thc tit din ct...8 1.7 Mt bng b tr kt cu...........10CHNG 2: S TNH TON KHUNG PHNG..112.1 S hnh hc.....112.2 S kt cu...112.2.1 Nhp tnh ton ca dm..112.2.2 Chiu di tnh ton ca ct12CHNG 3: XC NH TI TRNG TNH TON N V..133.1 Tnh ti n v.....133.2 Hot ti n v.....143.3 H s quy i ti trng....14CHNG 4: XC NH TI TRNG TC DNG VO KHUNG.154.1 Tnh ti tng 2,3..154.2 Tnh ti tng mi.....184.3 Tnh ti tc dng vo khung....21CHNG 5: XC NH HOT TI TC DNG VO KHUNG....225.1 Trng hp hot ti 1......225.1.1 Hot ti 1 tng 2...........225.1.2 Hot ti 1 tng 3...........235.1.3 Hot ti 1 tng mi........245.2 Trng hp hot ti 2......255.2.1 Hot ti 2 tng 2........255.2.2 Hot ti 2 tng 3........265.2.3 Hot ti 2 tng mi....275.3 Cc trng hp hot ti tc dng vo khung......28CHNG 6: XC NH TI TRNG GI.........30CHNG 7: XC NH NI LC...337.1 S phn t khung...337.2 Biu ni lc trng hp tnh ti.....337.3 Biu ni lc trng hp hot ti 1.....357.4 Biu ni lc trng hp hot ti 2.....377.5 Biu ni lc trng hp gi tri.397.6 Biu ni lc trng hp gi phi...407.7 Bng gi tr ni lc cc trng hp ti trng..42CHNG 8: T HP NI LC....47CHNG 9: TNH TON CT THP DM...509.1 Tnh ton ct thp cho dm B1 TH02......509.2 Tnh ton ct thp cho dm B2 TH02......529.3 B tr ct thp dm......55CHNG 10: TNH TON CT THP CT.....5610.1 Tnh ton ct thp cho ct C1 TH02...5610.2 Tnh ton ct thp cho ct C2 TH02...6010.3 Tnh ton ct thp cho ct C3 TH02...6310.4 B tr ct thp....6410.5 Tnh ton cu to nt gc trn cng......64CHNG 11: B TR CT THP KHUNG........65

CHNG I: LA CHN GII PHP KT CU1.1 C s quy phm v tiu chun thit k - TCVN 356 - 2005: kt cu b tng ct thp - tiu chun thit k. - TCVN 2737 - 1995: ti trng v tc ng - tiu chun thit k.1.2 Vt liu s dng - B tng mng v thn cng trnh cp bn B25 (mc M250#) c Rb=14,5 MPa; Rbt= 1,05 MPa.- Ct thp: + Thp 12mm nhm CI c: RS=RSC= 225MPa; RSW=175MPa. + Thp 12mm nhm CII c: RS=RSC= 280MPa; RSW=225MPa.1.3 La chn gii php kt cu snThng thng c 3 gii php kt cu sn: sn nm, sn sn, sn c.- Vi sn nm : Khi lng b tng ln nn gi thnh s cao, khi lng cng trnh ln do kt cu mng phi c cu to tt, khi lng cng v th m tng ln. Ngoi ra di tc dng ca gi ng v ng t th khi lng tham gia dao ng ln Lc qun tnh ln Ni lc ln lm cho cu to cc cu kin nng n km hiu qu v mt gi thnh cng nh kin trc.u im ca sn nm l chiu cao tng gim nn cng chiu cao nh s c s tng ln hn. Tuy nhin cp nc, cp in v diu ha ta phi lm trn gi nn u im ny khng c gi tr cao.- Vi sn sn : Do cng ngang ca cng trnh ln nn khi lng b tng kh nh Khi lng dao ng gim Ni lc gim Tit kim c b tng v thp cng do cng cng trnh kh ln nn chuyn v ngang s gim to tm l thoi mi cho ngi s dng.Nhc im ca sn s n l do chiu cao tng ln v thi cng phc tp hn phng n sn nm, tuy nhin y cng l phng n kha ph bin do ph hp vi iu kin k thut thi cng hin nay ca cc cng ty xy dung.- Vi sn c : Tuy khi lng cng trnh l nh nht nhng do thi cng rt phc tp trong cc cng vic thi cng chnh nh lp vn khun, t ct thp, b tng nn phng n ny khng kh thi.Qua phn tch v so snh cc phng n trn ta chn phng n sn sn ton khi. Da vo h s kin trc cng trnh, gii php kt cu la chn v ti trng tc dng ln cng trnh thit k mt bng kt cu cho cc sn. Mt bng kt cu c th hin trn cc bn v kt cu.1.4 La chn kch thc, chiu dy sn: Chiu dy bn sn c xc nh theo s b cng thc:(1.1)Trong : hb- chiu dy bn sn;D - h s ph thuc vo ti trng, D= 0,81,4;l1- kch thc cnh ngn ca bn;m - h s ph thuc loi sn, m= 30 45 vi sn bn loi dm,m= 40 45 vi sn loi bn k bn cnh, m b vi bn k t do, m ln vi bn lin tc;hmin- chiu dy bn b nht, 4cm vi sn mi, 5cm vi sn nh dn dng, 6cm vi sn nh cng nghip.1.4.1 Kch thc sn miVi bn k 4 cnh, bn lin tc ly m = 45, ti trng nh ly D= 0,8.

Vi sn ln nht, l1 = 4 m Vi sn mi nh dn dng th hmin= 4cm.Vy, chn chiu dy mi hmai = 8cm cho ton b sn ln v sn mi nh. Kt cu mi gm h mi tn gc ln x g, x g gc ln tng thu hi.1.4.2 Kch thc sn tng:a. kch thc sn phng hcVi bn k 4 cnh, bn lin tc ly m= 45, ti trng nh ly D= 1.

Vi sn ln nht, l1 = a = 4m Vi sn nh dn dng th hmin= 5cm.Vy, chn chiu dy sn tng hS1= 10cm cho sn phng hc c kch thc l 6,5 x 4m.b.Kch thc sn hnh langVi bn k 4 cnh, bn lin tc ly m = 45, ti trng nh ly D= 1,4.

Vi sn ln nht, l1 = L2 = 2,2m Vi sn nh dn dng th hmin= 5cm. Vy chn chiu dy sn tng hS2= 8cm cho sn hnh lang c kch thc l 4 x 2,2 m.* n gin trong tnh ton n, chn chiu dy ca tt c cc sn (sn mi, phng hc, sn hnh lang) hS= 10cm. Theo cu to sn ta c trng lng cho 1m2 bn sn l: Bng 1.1 Tnh tnh ti sn phng hc v sn hnh langCc lp hon thin sn (m) (daN/m3)TT tiu chun (daN/m2)H s vt tiTTtnh ton (daN/m2)

- Lp gch lt Ceramic0,0082000161,118

- Lp va lt0,032000601,378

- Lp va trt trn0,022000401,352

- Tng trng lng cc lp hon thin :116148

- Sn BTCT chu lc0,125002501,1275

-Tng cng gs :366423

Bng 1.2 Tnh tnh ti sn miCc lp hon thin sn (m) (daN/m3)TT tiu chun (daN/m2)H s vt tiTTtnh ton (daN/m2)

- Lp mi tn20201,122

- Lp va lt0,032000601,378

- Lp va trt trn0,022000401,352

- Tng trng lng cc lp hon thin :120151

- Sn BTCT chu lc0,125002501,1275

-Tng cng gs :370426

Bng 1.3 Hot ti cc phng ly theo tiu chun TCVN 2737-1995Cc phng chc nngTTTC ton phn (daN/m2)TTTC di hn(daN/m2)TTTC ngn hn (daN/m2)H s vt tiTTtnh ton (daN/m2)

- Phng hc 200701301,2240

- Snh, phng gii lao, cu thang3001002001,2360

- Mi b tng khng c ngi s dng757501,398

1.5 La chn gii php kt cu chu lcTheo cc d liu v kin trc nh hnh dng, chiu cao nh, khng gian bn trong yu cu th cc gii php kt cu c th l:- H tng chu lc: Trong h ny cc cu kin thng ng chu lc ca nh l cc tng phng. Ti trng ngang truyn n cc tm tng qua cc bn sn. Cc tng cng lm vic nh cc cng xn c chiu cao tit din ln. Gii php ny thch hp cho nh c chiu cao ln v yu cu v khng gian bn trong khng cao (khng yu cu c khng gian ln bn trong).- H khung chu lc: H ny c to thnh t cc thanh ng v thanh ngang l cc lin kt dm lin kt cng ti ch giao nhau gi l cc nt. Cc khung phng lin kt vi nhau qua cc dm dc to thnh khung khung gian. H kt cu ny khc phc c nhc im ca tng chu lc. Qua phn tch mt cch s b nh trn ta nhn thy mi h kt cu c bn ca nh u c nhng u, nhc im ring. i vi cng trnh ny, do cng trnh c cng nng l nh lm vic nn yu cu c khng gian linh hot. Do , nn dng h khung chu lc.1.6 La chn kch thc cc tit din1.6.1 Kch thc tit din dmKch thc tit din dm c xc nh s b theo cng thc :

Trong :hd , bd - Chiu cao v b rng tit din dm ;k - h s ph thuc vo ti trng, k = 1 1,3;L - chiu di nhp dm;m - h s m = 8 1,5a. Kch thc dm dc nh n gin trong tnh ton, ta coi dm dc nh c chiu di nhp tnh ton

L = B = 4m , m = 15 , k = 1 chn hd = 0,3m , bd = (0,3 0,5).hd = 0,18m dm dc c kch thc l : 0,3 x 0,22m.b. Kch thc tit din dm ngang nh BC n gin trong tnh ton, ta coi dm dc nh c nhiu nhp tnh ton

L = L1 (BC)= 6,9m , m = 12 , k = 1 chn : hd = 0,6m ; bd = (0,3 0,5).hd = 0,36m dm ngang nh BC kch thc l : 0,6 x 0,3m.c. Kch thc tit din dm ngang nh AB

n gin trong tnh ton, ta coi dm dc nh c chiu di nhp tnh ton L= L2 (AB)= 2,2m; m= 12; k=1 chn hd = 0,3m ; bd = (0,30,5).hd = 0,22m. dm ngang nh AB kch thc l : 0,3 x 0,22m.1.6.2 Kch thc tit din ctKch thc tit din ct c xc nh s b theo cng thc:(1.3)Trong : N-lc dc trong ct do ti trng ng gy ra;Rb- cng chu nn tnh ton ca b tng;k- h s k n nh hng do mmen, k= 1 1,5.- Lc dc trong ct do ti trng ng gy ra c xc nh nh sau:

(1.4)Trong : S- din tch truyn ti do ct chu ti trng;n- s tng in hnh, n=3;qs- ti trng tc dng ln 1m2 sn tng in hnhqm- ti trng tc dng ln 1m2 sn tng mi, vi mi b tng nng.Ta c:

a. Kch thc tit din ct bin trong phng (trc C)- Din tch truyn ti:

Lc dc trong ct: N = S(nqs + qm) = 13.(3 x 663 + 526) = 32 695daN. Din tch tit din ct

Chn:bc x hc = 22 x 30cm; (Ac= 660cm2) cho ct tng 1,2.bc x hc = 22 x 22cm cho ct tng 3.b. Kch thc tit din ct trong phng (trc B)- Din tch truyn ti:

Lc dc trong ct: N = S(nqs + qm) = 17,4(3 x 663 + 526) = 43 761daN Din tch tit din ct

Chn : bc x hc = 22 x 30cm; (Ac= 660cm2) cho ct tng 1,2. bc x hc = 22 x 22cm cho ct tng 3.c. Kch thc tit din ct ngoi phng (trc A)- Din tch truyn ti:

Lc dc trong ct:

Din tch tit din ct

- Chn:bc x hc = 22 x 22cm; (Ac = 484cm2 )cho ct tt c cc tng. * Kim tra tit din theo mnh Vi khung ton khi l0= 0,7.h = 0,7.330= 231cm.< [l0] = 31. Vy tit din t yu cu.1.7 Mt bng b tr kt cuHnh 1.1: Mt bng kt cuCHNG 2: S TNH TON KHUNG PHNG2.1 S hnh hc

Hnh 2.1: S hnh hc2.2 S kt cu2.2.1 Nhp tnh ton ca dm n gin trong tnh ton vi sai s chp nhn c, ta coi nhp tnh ton bng khong cch gia 2 trc ct tng 1,2.-Nhp tnh ton dm trong phng BC : lBC= 7m.- Nhp tnh ton dm hnh lang AB: lAB= 1,8m.2.2.2 Chiu di tnh ton ca ctNhp tnh ton ca ct c xc nh bng khong cch gia 2 trc dma. Chiu di tnh ton ct tng 1Ct mt t t nhin: Z= -0,45m. su chn mng: hm= -0,55m.Chiu di tnh ton ct tng 1: ht1=Ht+ Z+ hm- hd/2= 3,3 +0,45+0,55- 0,3/2=4,15m.b. Chiu di tnh ton ct tng 2,3: ht= Ht= 3,3m .

Hnh 2.2: S kt cu

CHNG 3: XC NH TI TRNG TNH TON N V3.1 Tnh ti n v-Tnh ti sn phng hc v hnh lang: gS =423 daN/cm2.- Tnh ti sn mi: gm= 349 daN/cm2.- Tnh ti tng 220: gt2= 514 daN/cm2.- Tnh ti tng 110: gt1= 296 daN/cm2.

Bng 3.1 Tnh ti tng xy 220Cc lp hon thin sn (m) (daN/m3)TT tiu chun (daN/m2)H s vt tiTTtnh ton (daN/m2)

- Hai lp trt0,032000601,378

- Gch xy0,2218003961,1436

- Ti tng phn b456514

- Ti tng c ca tnh n h s ca0,7319360

Bng 3.2 Tnh ti tng xy 110Cc lp hon thin sn (m) (daN/m3)TT tiu chun (daN/m2)H s vt tiTTtnh ton (daN/m2)

- Hai lp trt0,032000601,378

- Gch xy0,1118001981,1218

- Ti tng phn b456296

- Ti tng c ca tnh n h s ca0,7181207

3.2 Hot ti n v- Hot ti sn phng hc: pS= 360 daN/cm2.- Hot ti sn hnh lang: phl= 300 daN/cm2.- Hot ti sn mi: pm= 65 daN/cm2.3.3 H s quy i ti trng- Vi sn ln, kch thc 7 x 4,4m:Ti trng phn b tc dng ln khung c dng hnh thang. quy i sang dng ti trng phn b hnh ch nht, ta xc nh h s chuyn i k. vi - Vi sn hnh lang, kch thc 1,8 x 4,4m:Ti trng phn b tc dng ln khung c dng hnh tam gic. quy i sang dng ti trng phn b hnh ch nht, ta c h s k=.

Hnh 3.1: S dn ti trng

CHNG 4: XC NH TI TRNG TC DNG VO KHUNGTi trng bn thn ca cc kt cu dm, ct khung s do chng trnh tnh ton kt cu t tnh.4.1 Tnh ti tng 2,3

Hnh 4.1 S dn ti trng trng hp tnh ti tng 2,3Bng 4.1: Tnh ti tng 2,3Tnh ti phn b

TTLoi ti trng v cch tnhKt qu

1

2g1Do trng lng tng xy trn dm cao: 3,3- 0,6= 2,7m gt2= 514.2,7= 1387,8Do ti trng t sn truyn vo di dng hnh thang vi tung ln nht: ght= 423.(4,4-0,22)= 1768i ra phn b u vi k= 0,847ghcn= 1768.0,847=1497Cng v lm trn: g1= gt2+ ghcn=daN/m

1388

14972885

g2Do ti trng t sn truyn vo di dng hnh tam gic vi tung ln nht: gt= 423.(1,8-0,22)=668i ra phn b u vi k= 0,625Cng v lm trn: g2=668.0,625=

418

Tnh ti tp trung


12

3GCDo trng lng bn thn dm dc: 2500.1,1.0,3.0,22.4,4=Do trng lng tng xy trn dm dc cao: 3,3-0,3 = 3mXt n h s gim l ca 0,7: 514.3.4,4.0,7= Do trng lng sn truyn vo: 423.(4,4-0,22).(4,4-0,22)/4=Cng v lm trn: GC=daN799

4749

18477395

12GBGing nh mc 1,2,3 tnh trnDo trng lng sn hnh lang truyn vo: [(4,4-0,22) + (4,4-1,8)].(1,8-0,22).423/4=Cng v lm trn: GB=7395

13968791

123GADo trng lng bn thn dm dc: 2500.1,1.0,3.0,22.4,4=Do trng lng sn hnh lang truyn vo (mc 2 ca GB)Do lan can xy tng 110 cao 900m truyn vo 296.0,9.4,4=Cng v lm trn: GA=7991396

11723794

4.2 Tnh ti tng mi

Hnh 4.2: S dn ti trng trng hp tnh ti mi T mt ct kin trc ta thy trn mi c tng thu hi dng tam gic, n gin trong tnh ton, ta quy i hnh tam gic thnh hnh ch nht trn tong on dm. Trn on dm BC, c th p dng cng thc: h= ( i nh dn dng tn, (i=25% 30%) ), h== 1,32m chn h =1,4 m, tng thu hi quy i dng hnh ch nht c chiu cao l 0,7 m. Bng 4.2: Tnh ti mi Tnh ti phn b


1

2Do trng lng tng thu hi 110 cao trung bnh 0,7m gt1= 296.0,7=Do ti trng t sn truyn vo di dng hnh thang vi tung ln nht: ght= 427.(4,4-0,22)= 1788i ra phn b u vi k= 0,847ghcn= 1788.0,847=1415Cng v lm trn: = gt1+ ghcn=daN/m

207

14151622

1

Do ti trng t sn truyn vo di dng hnh tam gic vi tung ln nht: gtg= 427.(1,8-0,22)= 675i ra phn b u vi k= 0,625ghcn= 675.0,625=422Cng v lm trn: daN/m

422

Tnh ti tp trung


12

3

4Do trng lng bn thn dm dc: 2500.1,1.0,3.0,22.4,4=Do trng lng sn ln truyn vo: 427.(4,4-0,2).(4,4-0,22)/4=Do trng lng sn nhp 0,6 truyn vo: 427.0,6.4,4=

Tng sn cao 0,6m dy 8cm bng b tng ct thp: 2500.1,1.0,08.0,6.4,4=Cng v lm trn: =daN799

1865

1127

5814372

12Ging nh mc 1,2 ca tnh trnDo trng lng sn nh truyn vo: [(4,4-0,22) + (4,4-1,8)].(1,8-0,22).427/4 =Cng v lm trn: =2664

11433807

123Do trng lng bn thn dm dc: 2500.1,1.0,3.0,22.4,4=Do trng lng sn hnh lang truyn vo (mc 2 ca )Do trng lng sn truyn vo (nh mc 3,4 ca ) Cng v lm trn: =799114317083650

4.3 Tnh ti tc dng vo khung:

Hnh 4.3: S ti trng tc dng vo khung trng hp tnh ti

cHNG 5: XC NH HOT TI TC DNG VO KHUNG5.1 Trng hp hot ti 15.1.1 Hot ti 1 tng 2

Hnh 5.1: S dn ti trng trng hp hot ti 1 tng 2Bng 5.1: Hot ti 1 tng 2SnLoi tI trng v cch tnhKt qu

Sn tng 2Do ti trng t sn truyn vo di dng hnh thang vi tung ln nht: = 360.4,4=1584i ra phn b u vi k= 0,847 = 1296.0,847=daN/m

1341

Do ti trng t sn truyn vo: daN

1742

5.1.2 Hot ti 1 tng 1,3

Hnh 5.2: S dn ti trng trng hp hot ti 1 tng 3Bng 5.2: Hot ti 1 tng 3SnLoi tI trng v cch tnhKt qu

Sn tng 3Do ti trng t sn truyn vo di dng hnh tam gic vi tung ln nht: = 300.1,8=540i ra phn b u vi k= 0,625 = 540.0,625=daN/m

338

Do ti trng t sn truyn vo:

daN

945

5.1.3 Hot ti 1 tng mi

Hnh 5.3: S dn ti trng trng hp hot ti 1 tng miBng 5.3: Hot ti 1 tng miSnLoi ti trng v cch tnhKt qu

Sn tng miDo ti trng t sn truyn vo di dng hnh thang vi tung ln nht: = 65.4,4=286i ra phn b u vi k= 0,847 = 286.0,847=daN/m

242


daN

315

Do ti trng t s n truyn vo: daN172

5.2 Trng hp hot ti 25.2.1 Hot ti 2 tng 2

Hnh 5.4: S dn ti trng trng hp hot ti 2 tng 2

Bng 5.4: Hot ti 2 tng 2SnLoi ti trng v cch tnhKt qu

Sn tng 2Do ti trng t sn truyn vo di dng hnh tam gic vi tung ln nht: = 300.1,8=540i ra phn b u vi k= 0,625 = 540.0,625=daN/m

338


daN

945

5.2.2 Hot ti 2 tng1,3.

Hnh 5.5: S dn ti trng trng hp hot ti 2 tng 3Bng 5.5: Hot ti 2 tng 3SnLoi ti trng v cch tnhKt qu

Sn tng 3Do ti trng t sn truyn vo di dng hnh thang vi tung ln nht: = 360.4,4=1584i ra phn b u vi k= 0,847 = 1584.0,847=daN/m

1342


daN

1742

5.2.3 Hot ti 2 tng mi Hnh 5.6: S dn ti trng trng hp hot ti 2 tng miBng 5.6: Hot ti 2 tng miSnLoi ti trng v cch tnhKt qu

Sn tng miDo ti trng t sn truyn vo di dng hnh tam gic vi tung ln nht: = 65.1,8=117i ra phn b u vi k= 0,625 = 117.0,625=daN/m

73


daN

205

Do ti trng t s n truyn vo: daN

172

5.3 Cc trng hp hot ti tc dng vo khunga. Trng hp hot ti 1

Hnh 5.7: S ti trng tc dng vo khung trng hp hot ti 1b. Trng hp hot ti 2

Hnh 5.8: S ti trng tc dng vo khung trng hp hot ti 2

CHNG 6: XC NH TI TRNG GICng trnh c xy dng ti khu vc thuc vng gi II-A, c p lc gi n v: . Cng trnh c xy dng trong thnh ph, b che chn mnh nn c a hnh dng B.Cng trnh c chiu cao di 40m nn ta ch xt n tc dng tnh ti ca ti trng gi. Ti trng gi truyn ln khung c tnh theo cng thc:(6.1)(6.2)Trong :qd, qh - p lc gi y v gi ht tc dng ln khung;W0- p lc gi n v;n- h s tin cy i vi ti trng gi;ki- h s k n s thay i p lc gi theo cao v dng a hnh ;Cd, Ch - h s kh ng tng ng vi hng n gi v hng khut gi;B- din tch phn chu p lc ca ti trng gi.Tra bng s dng phng php ni suy, ta xc nh c h s kBng 6.1: Bng tnh ton ti trng giTngH(m)Z(m)knB(m)CdChqd(daN/m)qh(daN/m)

13,34,150,851,24,40,80,6298224

23,37,450,941,24,40,80,6330247

33,310,751,011,24,40,80,6354266

Phn ti trng gi trn mi quy v lc tp trung t u ct Sd, Sh vi h s k= 1,01.T hnh dng mi v cc h s kh ng ta c t s : . Ni suy ta c: Ce1= -0,722 v Ce2= -0,566.

=> Ce3=-0,6T (6.1) v (6.2) ta c th tnh tr s S theo cng thc:

- Pha gi y: .hs n=0,6hmi=hmi-hs n=1,4-0,6=0,8- Pha gi ht: .* S ti trng gi tri tc dng vo khung:

Hnh 6.1: S ti trng gi tri tc dng vo khung* S ti trng gi phi tc dng vo khung:

Hnh 6.2: S ti trng gi phi tc dng vo khung

CHNG 7: XC NH NI LCS dng phn mm Sap2000 (Etabs) tnh ton ni lc cho khung vi s phn t dm, ct nh hnh v.Cc trng hp ti trng c khai bo nh tnh ton phn trn.Vi trng hp tnh ti, k n trng lng bn thn ca kt cu (ct, dm khung) vi h s vt ti l n=1,1.7.1 S phn t khung

Hnh 7.1: S phn t khung7.2 Biu ni lc trng hp tnh tia. Biu m men (daN.m)

Hnh 7.2: Biu m men trng hp tnh tib. Biu lc ct (daN)

Hnh 7.3: Biu lc ct trng hp tnh tic. Biu lc dc (daN)

Hnh 7.4: Biu lc dc trng hp tnh ti7.3 Biu ni lc trng hp hot ti 1a. Biu m men (daN.m)

Hnh 7.5: Biu m men trng hp hot ti 1b. Biu lc ct (daN)

Hnh 7.6: Biu lc ct trng hp hot ti 1c. Biu lc dc (daN)

Hnh 7.7: Biu lc dc trng hp hot ti 17.4 Biu ni lc trng hp hot ti 2a. Biu m men (daN.m)

Hnh 7.8: Biu m men trng hp hot ti 2b. Biu lc ct (daN)

Hnh 7.9: Biu lc ct trng hp hot ti 2c. Biu lc dc (daN)

Hnh 7.10: Biu lc dc trng hp hot ti 27.5 Biu ni lc trng hp gi tria. Biu m men (daN.m)

Hnh 7.11: Biu m men trng hp gi trib. Biu lc ct (daN)

Hnh 7.12: Biu lc ct trng hp gi tric. Biu lc dc (daN)

Hnh 7.13: Biu lc dc trng hp gi tri7.6. Biu ni lc trng hp gi phia. Biu m men (daN.m)

Hnh 7.14: Biu m men trng hp gi phib. Biu lc ct (daN)

Hnh 7.15: Biu lc ct trng hp gi phic. Biu lc dc (daN)

Hnh 7.16: Biu lc dc trng hp gi phi7.7 Bng gi tr ni lc cc trng hp ti trngBng 7.1: Bng gi tr ni lc dm (daN.m, daN)FrameStationOutputCaseCaseTypeNQM

TextmTextTextKgfKgfKgf-m

100TH11Combination-35.231627.01459.21

100.9075TH11Combination-35.232171.06-1264.16

101.815TH11Combination-35.232715.1-3481.26

100TH12Combination-115.93444.67229.56

100.9075TH12Combination-115.931295.45-560.02

101.815TH12Combination-115.932146.24-2121.69

100TH13Combination-1025.193207.642082.91

100.9075TH13Combination-1025.193751.68-1074.88

101.815TH13Combination-1025.194295.73-4726.4

100TH14Combination620.98-1467.27-1543.92

100.9075TH14Combination620.98-923.22-459.24

101.815TH14Combination620.98-379.17131.72

100TH21Combination572.58-558.19-1199.86

100.9075TH21Combination572.58-14.15-940.16

101.815TH21Combination572.58529.9-1174.18

100TH22Combination499.95-1622.3-1406.54

100.9075TH22Combination499.95-802.19-306.43

101.815TH22Combination499.9517.9249.43

100TH23Combination-908.973649.222064.29

100.9075TH23Combination-908.974193.27-1494.24

101.815TH23Combination-908.974737.31-5546.49

100TH24Combination-981.612585.121857.61

100.9075TH24Combination-981.613405.22-860.51

101.815TH24Combination-981.614225.33-4322.87

100TH15Combination-94.411194.23409.25

100.9075TH15Combination-94.412045.01-1060.55

101.815TH15Combination-94.412895.79-3302.44

100TH25Combination519.32-947.69-1244.82

100.9075TH25Combination519.32-127.59-756.91

101.815TH25Combination519.32692.52-1013.25

100TH26Combination-962.233259.722019.33

100.9075TH26Combination-962.234079.83-1310.99

101.815TH26Combination-962.234899.93-5385.55

110TH11Combination34.38325.87232.63

110.9075TH11Combination34.381176.65-449.14

111.815TH11Combination34.382027.43-1902.99

110TH12Combination-2.71611.53476.04

110.9075TH12Combination-2.72155.58-1233.29

111.815TH12Combination-2.72699.63-3436.34

110TH13Combination-1012.52107.961469.19

110.9075TH13Combination-1012.52652-690.64

111.815TH13Combination-1012.53196.05-3344.19

110TH14Combination706.06-481.93-857.08

110.9075TH14Combination706.0662.11-666.58

111.815TH14Combination706.06606.16-969.81

110TH21Combination674.71-786.28-802.25

110.9075TH21Combination674.7133.83-460.83

111.815TH21Combination674.71853.94-863.65

110TH22Combination641.33370.82-583.18

110.9075TH22Combination641.33914.87-1166.56

111.815TH22Combination641.331458.91-2243.66

110TH23Combination-8721544.621291.4

110.9075TH23Combination-8722364.73-482.47

111.815TH23Combination-8723184.84-3000.59

110TH24Combination-905.372701.721510.46

110.9075TH24Combination-905.373245.77-1188.21

111.815TH24Combination-905.373789.81-4380.6

110TH15Combination42.071130.13408.36

110.9075TH15Combination42.071980.91-1003.27

111.815TH15Combination42.072831.69-3186.99

110TH25Combination681.63-62.44-644.09

110.9075TH25Combination681.63757.66-959.55

111.815TH25Combination681.631577.77-2019.25

110TH26Combination-865.082268.461449.56

110.9075TH26Combination-865.083088.57-981.19

111.815TH26Combination-865.083908.67-4156.19

120TH11Combination89.351316.85187.41

120.9075TH11Combination89.351864.52-1256.14

121.815TH11Combination89.352412.2-3196.7

120TH12Combination138886.75199.17

120.9075TH12Combination1381499.77-883.71

121.815TH12Combination1382112.78-2522.91

120TH13Combination-132.191428.31408.95

120.9075TH13Combination-132.191975.99-1135.75

121.815TH13Combination-132.192523.66-3177.47

120TH14Combination619.86753.57-75.51

120.9075TH14Combination619.861301.24-1007.88

121.815TH14Combination619.861848.92-2437.27

120TH21Combination548.65970.16-58.94

120.9075TH21Combination548.651517.83-1187.87

121.815TH21Combination548.652065.51-2813.81

120TH22Combination592.44583.07-48.36

120.9075TH22Combination592.441189.55-852.68

121.815TH22Combination592.441796.03-2207.39

120TH23Combination-128.191577.42377.07

120.9075TH23Combination-128.192125.1-1302.95

121.815TH23Combination-128.192672.78-3479.98

120TH24Combination-84.41190.34387.66

120.9075TH24Combination-84.41796.82-967.77

121.815TH24Combination-84.42403.3-2873.57

120TH15Combination115.31087.07187.02

120.9075TH15Combination115.31700.09-1077.66

121.815TH15Combination115.32313.11-2898.65

120TH25Combination572.01763.36-59.29

120.9075TH25Combination572.011369.84-1027.24

121.815TH25Combination572.011976.33-2545.56

120TH26Combination-104.831370.63376.72

120.9075TH26Combination-104.831977.11-1142.32

121.815TH26Combination-104.832583.59-3211.73

130TH11Combination-1558.51-8062.78-6232.91

133.4925TH11Combination-1558.51-496.288713.34

136.985TH11Combination-1558.517070.22-2766.41

130TH12Combination-1753.92-7104.8-5530.41

133.4925TH12Combination-1753.92-383.497546.01

136.985TH12Combination-1753.926337.83-2851.77

130TH13Combination-1047.75-6984.08-4792.55

133.4925TH13Combination-1047.75-262.777862.26

136.985TH13Combination-1047.756458.55-2957.13

130TH14Combination-1626.46-7322.28-6386.21

133.4925TH14Combination-1626.46-600.967449.76

136.985TH14Combination-1626.466120.35-2188.47

130TH21Combination-1691.68-8118.59-6875.13

133.4925TH21Combination-1691.68-636.618413.65

136.985TH21Combination-1691.686845.37-2428.4

130TH22Combination-1867.56-7256.42-6242.89

133.4925TH22Combination-1867.56-535.17363.04

136.985TH22Combination-1867.566186.22-2505.22

130TH23Combination-1170.85-7814.22-5440.84

133.4925TH23Combination-1170.85-332.238784.9

136.985TH23Combination-1170.857149.75-3120.19

130TH24Combination-1346.72-6952.04-4808.6

133.4925TH24Combination-1346.72-230.727734.3

136.985TH24Combination-1346.726490.59-3197.01

130TH15Combination-1843.94-8007.63-6160.73

133.4925TH15Combination-1843.94-441.138592.92

136.985TH15Combination-1843.947125.37-3079.43

130TH25Combination-1948.57-8068.96-6810.18

133.4925TH25Combination-1948.57-586.988305.26

136.985TH25Combination-1948.576895-2710.12

130TH26Combination-1427.74-7764.58-5375.88

133.4925TH26Combination-1427.74-282.68676.52

136.985TH26Combination-1427.747199.38-3401.91

140TH11Combination-1970.46-11623.59-9804.29

143.4925TH11Combination-1970.46-279.9510982.26

146.985TH11Combination-1970.4611063.69-7848.86

140TH12Combination-1877.4-16651.83-13725.18

143.4925TH12Combination-1877.4-624.7516444.06

146.985TH12Combination-1877.415402.33-9361.29

140TH13Combination-1419.87-10895.21-6661.2

143.4925TH13Combination-1419.87448.4311581.47

146.985TH13Combination-1419.8711792.07-9793.51

140TH14Combination-1846.85-12521.76-12856.31

143.4925TH14Combination-1846.85-1178.1211067.11

146.985TH14Combination-1846.8510165.52-4627.14

140TH21Combination-2242.79-12365.27-12591.74

143.4925TH21Combination-2242.79-1021.6310785.14

146.985TH21Combination-2242.7910322.01-5455.64

140TH22Combination-2159.04-16890.69-16120.54

143.4925TH22Combination-2159.04-1331.9515700.76

146.985TH22Combination-2159.0414226.78-6816.83

140TH23Combination-1858.51-10901.37-7016.15

143.4925TH23Combination-1858.51442.2711248.07

146.985TH23Combination-1858.5111785.91-10105.38

140TH24Combination-1774.76-15426.79-10544.94

143.4925TH24Combination-1774.76131.9416163.69

146.985TH24Combination-1774.7615690.68-11466.57

140TH15Combination-2356.87-16568.49-13775.97

143.4925TH15Combination-2356.87-541.4116102.2

146.985TH15Combination-2356.8715485.67-9994.21

140TH25Combination-2590.56-16815.69-16166.25

143.4925TH25Combination-2590.56-1256.9515393.1

146.985TH25Combination-2590.5614301.79-7386.45

140TH26Combination-2206.28-15351.79-10590.65

143.4925TH26Combination-2206.28206.9515856.02

146.985TH26Combination-2206.2815765.69-12036.19

150TH11Combination2174.07-16702.56-14472.01

153.4925TH11Combination2174.07-675.4815874.39

156.985TH11Combination2174.0715351.6-9753.79

150TH12Combination2759.06-11693.48-10287.12

153.4925TH12Combination2759.06-349.8410743.53

156.985TH12Combination2759.0610993.8-7843.49

150TH13Combination2513.77-10210.56-4193.04

153.4925TH13Combination2513.771133.0811658.51

156.985TH13Combination2513.7712476.72-12107.6

150TH14Combination1264.59-13316.72-16279.11

153.4925TH14Combination1264.59-1973.0810420.71

156.985TH14Combination1264.599370.56-2497.14

150TH21Combination1467.37-17604.96-19484.2

153.4925TH21Combination1467.37-2046.2214831.67

156.985TH21Combination1467.3713512.52-5191.35

150TH22Combination1993.87-13096.79-15717.8

153.4925TH22Combination1993.87-1753.1510213.89

156.985TH22Combination1993.879590.49-3472.08

150TH23Combination2591.63-14809.42-8606.75

153.4925TH23Combination2591.63749.3215945.69

156.985TH23Combination2591.6316308.06-13840.77

150TH24Combination3118.13-10301.24-4840.34

153.4925TH24Combination3118.131042.411327.91

156.985TH24Combination3118.1312386.04-12121.49

150TH15Combination2898.86-16630.55-14519.37

153.4925TH15Combination2898.86-603.4715575.52

156.985TH15Combination2898.8615423.62-10304.17

150TH25Combination2119.68-17540.15-19526.83

153.4925TH25Combination2119.68-1981.4114562.69

156.985TH25Combination2119.6813577.33-5686.69

150TH26Combination3243.94-14744.6-8649.37

153.4925TH26Combination3243.94814.1315676.71

156.985TH26Combination3243.9416372.87-14336.1

Bng 7.2: Bng gi tr ni lc ct (kN.m, kN)FrameStationOutputCaseCaseTypeNQM


10TH11Combination-10516.188.5191.22

14.15TH11Combination-9963.73 -176.07

10TH12Combination-10875.8719.3777.53

14.15TH12Combination-10323.519.37-2.86

10TH13Combination-5924.921281.021871

14.15TH13Combination-5372.5644.32-879.09

10TH14Combination-13864.46-1035.59-1537.23

14.15TH14Combination-13312.09-105.99831.57

10TH21Combination-14048.44-888.31-1301.21

14.15TH21Combination-13496.07-51.67649.25

10TH22Combination-14372.23-950.53-1403.53

14.15TH22Combination-13819.87-113.89805.14

10TH23Combination-6902.861196.651766.2

14.15TH23Combination-6350.4983.62-890.34

10TH24Combination-7226.651134.431663.88

14.15TH24Combination-6674.2921.4-734.45

10TH15Combination-11524.3962.96156.5

14.15TH15Combination-10972.0362.96-104.8

10TH25Combination-14955.9-911.29-1332.45

14.15TH25Combination-14403.54-74.65713.39

10TH26Combination-7810.321173.661734.95

14.15TH26Combination-7257.9660.63-826.2

20TH11Combination-7796.74123.73283.14

23.3TH11Combination-7357.51123.73-125.19

20TH12Combination-6029.18135.3226.71

23.3TH12Combination-5589.95135.3-219.79

20TH13Combination-4786.191069.511203.82

23.3TH13Combination-4346.96-19.49-528.73

20TH14Combination-8050.83-726.98-712.36

23.3TH14Combination-7611.688.12341.76

20TH21Combination-9143.88-624.25-550.61

23.3TH21Combination-8704.65109.34299

20TH22Combination-7553.07-613.84-601.4

23.3TH22Combination-7113.84119.75213.85

20TH23Combination-6205.71992.591173.95

23.3TH23Combination-5766.4812.49-484.44

20TH24Combination-4614.910031123.16

23.3TH24Combination-4175.6722.9-569.58

20TH15Combination-7427.26157.37304.45

23.3TH15Combination-6988.03157.37-214.88

20TH25Combination-8811.34-593.98-531.43

23.3TH25Combination-8372.11139.61218.27

20TH26Combination-5873.181022.861193.13

23.3TH26Combination-5433.9542.76-565.16

30TH11Combination-2944.3889.35107.44

33.3TH11Combination-2505.1589.35-187.41

30TH12Combination-3407.48138256.24

33.3TH12Combination-2968.25138-199.17

30TH13Combination-2660.92993.01940.47

33.3TH13Combination-2221.69-175.19-408.95

30TH14Combination-3335.66-617.94-515.32

33.3TH14Combination-2896.43259.8675.51

30TH21Combination-3273.87-565.37-503.25

33.3TH21Combination-2834.64224.6558.94

30TH22Combination-3690.66-521.58-369.33

33.3TH22Combination-3251.43268.4448.36

30TH23Combination-2666.61884.49806.96

33.3TH23Combination-2227.38-166.89-377.07

30TH24Combination-3083.39928.28940.88

33.3TH24Combination-2644.16-123.1-387.66

30TH15Combination-3379.16115.3193.48

33.3TH15Combination-2939.93115.3-187.02

30TH25Combination-3665.17-542.01-425.82

33.3TH25Combination-3225.94248.0159.29

30TH26Combination-3057.9907.85884.4

33.3TH26Combination-2618.67-143.53-376.72

40TH11Combination-15195.93-1647.86-2401.72

43.3TH11Combination-14596.98-1647.863036.21

40TH12Combination-13828.53-1891.93-3235.85

43.3TH12Combination-13229.58-1891.933007.51

40TH13Combination-13913.7-915.57-1406.29

43.3TH13Combination-13314.75-915.571615.08

40TH14Combination-13577.15-2246.32-3463.92

43.3TH14Combination-12978.2-2246.323948.94

40TH21Combination-14873.55-2240.33-3331.76

43.3TH21Combination-14274.6-2240.334061.33

40TH22Combination-13642.9-2459.99-4082.48

43.3TH22Combination-13043.95-2459.994035.5

40TH23Combination-15176.44-1042.65-1479.9

43.3TH23Combination-14577.49-1042.651960.86

40TH24Combination-13945.79-1262.32-2230.61

43.3TH24Combination-13346.84-1262.321935.03

40TH15Combination-15246.69-1959.25-3203.43

43.3TH15Combination-14647.74-1959.253262.09

40TH25Combination-14919.24-2520.58-4053.3

43.3TH25Combination-14320.29-2520.584264.62

40TH26Combination-15222.13-1322.9-2201.43

43.3TH26Combination-14623.18-1322.92164.15

50TH11Combination-38582.953652.75499.58

53.3TH11Combination-39381.553652.7-6554.33

50TH12Combination-43712.993766.637052.98

53.3TH12Combination-44511.593766.63-5376.9

50TH13Combination-36795.951322.941910.72

53.3TH13Combination-37594.551322.94-2454.97

50TH14Combination-35496.074799.248422.57

53.3TH14Combination-36294.674799.24-7414.91

50TH21Combination-37734.265157.838396.33

53.3TH21Combination-38532.865157.83-8624.51

50TH22Combination-42351.35260.379794.39

53.3TH22Combination-43149.95260.37-7564.83

50TH23Combination-38904.162029.162535.66

53.3TH23Combination-39702.762029.16-4160.57

50TH24Combination-43521.22131.73933.72

53.3TH24Combination-44319.82131.7-3100.88

50TH15Combination-46124.884358.197385.55

53.3TH15Combination-46923.484358.19-6996.48

50TH25Combination-445225792.7710093.7

53.3TH25Combination-45320.65792.77-9022.45

50TH26Combination-45691.892664.14233.03

53.3TH26Combination-46490.492664.1-4558.51

60TH11Combination-69332.211443.44436.42

64.15TH11Combination-70336.511443.4-1553.69

60TH12Combination-68087.31891.642788.53

64.15TH12Combination-69091.61891.64-911.77

60TH13Combination-60891.84-2216.02-2988.32

64.15TH13Combination-61896.14-2216.026208.15

60TH14Combination-58023.224155.638995.92

64.15TH14Combination-59027.524155.63-8249.94

60TH21Combination-67026.524263.049685.51

64.15TH21Combination-68030.824263.04-8006.09

60TH22Combination-65906.113766.458202.41

64.15TH22Combination-66910.413766.45-7428.37

60TH23Combination-69608.28-1471.45-1100.31

64.15TH23Combination-70612.58-1471.455006.19

60TH24Combination-68487.87-1968.03-2583.41

64.15TH24Combination-69492.17-1968.035583.92

60TH15Combination-77927.821364.924220.45

64.15TH15Combination-78932.121364.92-1443.99

60TH25Combination-74762.574192.419491.14

64.15TH25Combination-75766.874192.41-7907.36

60TH26Combination-77344.33-1542.07-1294.68

64.15TH26Combination-78348.63-1542.075104.92

70TH11Combination-56495.931354.92042.41

74.15TH11Combination-55742.71354.9-3580.41

70TH12Combination-55601.37872.271334.69

74.15TH12Combination-54848.14872.27-2285.22

70TH13Combination-51680.752936.365065.5

74.15TH13Combination-50927.522006.76-5191.46

70TH14Combination-46609.84-1242.17-2368

74.15TH14Combination-45856.61-5.47220.88

70TH21Combination-53484.6-638.71-1416.28

74.15TH21Combination-52731.38474.32-1075.16

70TH22Combination-52679.5-1073.08-2053.23

74.15TH22Combination-51926.2739.9590.51

70TH23Combination-58048.423121.975273.87

74.15TH23Combination-57295.22285.33-5946.26

70TH24Combination-57243.322687.64636.92

74.15TH24Combination-56490.091850.96-4780.6

70TH15Combination-62959.061301.961973.03

74.15TH15Combination-62205.841301.96-3430.1

70TH25Combination-59301.42-686.35-1478.72

74.15TH25Combination-58548.2426.68-939.89

70TH26Combination-63865.253074.335211.43

74.15TH26Combination-63112.022237.69-5810.99

80TH11Combination-31254.13528.966173.39

83.3TH11Combination-30655.153528.96-5472.2

80TH12Combination-36459.343631.335558.27

83.3TH12Combination-35860.393631.33-6425.11

80TH13Combination-31055.84520.536916.14

83.3TH13Combination-30456.853705.43-6656.68

80TH14Combination-29091.051259.112718.02

83.3TH14Combination-28492.12348.11-3233.91

80TH21Combination-30256.061941.694116.19

83.3TH21Combination-29657.112921.79-3908.56

80TH22Combination-34940.782033.823562.58

83.3TH22Combination-34341.833013.92-4766.18

80TH23Combination-32024.344876.967894.5

83.3TH23Combination-31425.394143.37-6989.04

80TH24Combination-36709.064969.097340.9

83.3TH24Combination-36110.114235.5-7846.67

80TH15Combination-37645.224200.826874.07

83.3TH15Combination-37046.274200.82-6988.63

80TH25Combination-36008.072546.364746.8

83.3TH25Combination-35409.123526.46-5273.35

80TH26Combination-37776.355481.638525.11

83.3TH26Combination-37177.44748.04-8353.84

90TH11Combination-12196.451558.512376.66

93.3TH11Combination-11757.221558.51-2766.41

90TH12Combination-11321.061753.922936.18

93.3TH12Combination-10881.831753.92-2851.77

90TH13Combination-11269.782285.553136.83

93.3TH13Combination-10830.551407.75-2957.13

90TH14Combination-10931.58501.261393.22

93.3TH14Combination-10492.351669.46-2188.47

90TH21Combination-11940.16791547.08

93.3TH21Combination-11500.871730.38-2428.4

90TH22Combination-11152.25854.882050.65

93.3TH22Combination-10713.021906.26-2505.22

90TH23Combination-12244.482284.873116.33

93.3TH23Combination-11805.251494.85-3120.19

90TH24Combination-11456.622460.743619.9

93.3TH24Combination-11017.391670.72-3197.01

90TH15Combination-12423.61843.943005.58

93.3TH15Combination-11984.371843.94-3079.43

90TH25Combination-12144.53935.892113.11

93.3TH25Combination-11705.31987.27-2710.12

90TH26Combination-12448.912541.763682.36

93.3TH26Combination-12009.681751.74-3401.91

CHNG 8: T HP NI LCMc ch ca t hp ni lc l tm ni lc nguy him trn mt s tit din di tc dng ca nhiu loi ti trng. C hai loi t hp: t hp c bn v t hp c bit. Trong phm vi n, ch xt n t hp c bn.T hp c bn c phn thnh: - T hp c bn 1.- T hp c bn 2.T hp c bn 1 bao gm: Ni lc do tnh ti cng vi ni lc ni lc do mt loi hot ti gy ra.T hp c bn 2 bao gm: Ni lc do tnh ti cng vi ni lc do cc loi hot ti gy ra, trong ni lc do hot ti c nhn vi h s t hp ly bng 0,9.Vi mt phn t dm: ta tin hnh t hp ni lc cho ba tit din (Hai tit din u dm v mt tit din gia dm). Trong phm vi n, ta tin hnh t hp v thit k cho 2 dm tng di cng l 2 dm c ni lc ln nht, nguy him nht, cc cu kin tng trn b tr ct thp ging cu kin dm tng 2.Vi phn t ct: ta tin hnh t hp ni lc cho hai tit din (mt tit din chn ct v mt tit din nh ct). Trong phm vi n, ta tin hnh t hp v thit k cho 3 ct tng di cng l 3 ct c ni lc ln nht, nguy him nht, cc cu kin ct tng trn b tr ct thp ging cu kin ct tng 2.

n b tng ct thp 2 ngnh xy dng dn dng v cng nghip

-Trang 69-SV TH: CAO NGC HA LP: LT XD K59

PHAN TU COTBANG TO HOP NOI LUC CHO COT

MAT CATNOI LUCTRUONG HOP TAI TRONGTO HOP CO BAN 1TO HOP CO BAN 2

TTHT1HT2GTGPMMAXM MINM TUM MAXM MINM TU

N TUN TUN MAXN TUN TUN MAX

1234567891011121314

1I/I4,74,84,84,5,74,6,84,5,6,8

M(Tm)112.2578.97-34.721758.75-1649.481871-1537.23-1537.231766.198-1403.53-1332.46

N(T)-9867.57-648.52-1008.293942.65-3996.88-5924.92-13864.5-13864.5-6902.85-14372.2-14955.9

II/II4,84,74,84,6,84,5,74,5,6,8

M(Tm)-74.13-101.9471.27-804.97905.69831.56-879.1831.56805.134-890.349713.388

N(T)-9315.21-648.52-1008.293942.65-3996.88-13312.1-5372.56-13312.1-13819.9-6350.49-14403.5

2I/I4,74,84,84,5,6,74,6,84,5,8

M(Tm)205.3977.7521.32998.42-917.751203.81-712.36-712.361193.131-601.397-550.61

N(T)-6398.66-1398.08369.491612.47-1652.16-4786.19-8050.82-8050.82-5873.17-7553.06-9143.88

II/II4,84,74,84,5,84,6,74,5,8

M(Tm)-130.14.92-89.69-398.62471.86341.76-528.72341.76299.002-569.579299.002

N(T)-5959.43-1398.08369.491612.47-1652.16-7611.59-4346.96-7611.59-8704.65-4175.67-8704.65

3I/I4,74,84,64,6,74,5,84,6,8

M(Tm)170.2-62.7686.04770.27-685.52940.47-515.32256.24940.879-503.252-369.332

N(T)-2972.7128.32-434.77311.79-362.95-2660.92-3335.66-3407.48-3083.39-3273.88-3690.66

II/II4,84,74,64,5,6,84,6,74,6,8

M(Tm)-199.5612.150.39-209.39275.0775.51-408.95-199.1759.289-387.6648.354

N(T)-2533.4828.32-434.77311.79-362.95-2896.43-2221.69-2968.25-3225.94-2644.16-3251.43

4I/I 4,84,5,6-4,6,84,5,6,7

M(Tm)-2434.1532.42-801.711027.85-1029.78--3463.93-3203.44--4082.49-2201.45

N(T)-13777.8-1418.15-50.76-135.92200.62--13577.2-15246.7--13642.9-15222.1

II/II4,8-4,5,64,5,6,8-4,5,6,7

M(Tm)2781.63254.58225.88-1166.541167.313948.94-3262.094264.623-2164.158

N(T)-13178.8-1418.15-50.76-135.92200.62-12978.2--14647.7-14320.3--14623.2

5I/I4,8-4,5,64,5,6,8-4,5,6,7

M(Tm)5167.01332.561885.97-3256.293255.568422.57-7385.5410093.69-4233.026

N(T)-36171.1-2411.88-7541.93-624.88675-35496.1--46124.9-44522--45691.9

II/II 4,84,5,6-4,5,6,84,5,6,7

M(Tm)-4934.75-1619.58-442.152479.78-2480.16--7414.91-6996.48--9022.45-4558.51

N(T)-36969.7-2411.88-7541.93-624.88675--36294.7-46923.5--45320.6-46490.5

6I/I4,84,74,5,64,5,84,6,74,5,6,7

M(Tm)3004.51431.92-215.97-5992.825991.438995.93-2988.324220.459685.515-2583.41-1294.68

N(T)-59491.7-9840.51-8595.6-1400.141468.49-58023.2-60891.9-77927.8-67026.5-68487.9-77344.3

II/II4,74,84,5,64,6,74,5,84,5,6,7

M(Tm)-1021.47-532.22109.77229.62-7228.486208.15-8249.95-1443.995583.918-8006.15104.92

N(T)-60496-9840.51-8595.6-1400.141468.49-61896.2-59027.5-78932.1-69492.2-68030.8-78348.6

7I/I4,74,84,5,64,5,74,6,84,5,6,7

M(Tm)1404.07638.34-69.383661.44-3772.065065.51-2367.991973.035273.872-2053.235211.43

N(T)-49138.2-7357.7-6463.14-2542.522528.4-51680.8-46609.8-62959.1-58048.4-52679.5-63865.3

II/II4,84,74,5,64,6,84,5,74,5,6,7

M(Tm)-2435.52-1144.88150.3-2755.942656.4220.88-5191.46-3430.190.51-5946.26-5810.99

N(T)-48385-7357.7-6463.14-2542.522528.4-45856.6-50927.5-62205.9-51926.3-57295.2-63112

8I/I4,7-4,5,64,5,6,7-4,5,6,7

M(Tm)4857.591315.8700.682058.55-2139.576916.14-6874.078525.117-8525.117

N(T)-30068.2-1185.88-6391.12-987.59977.17-31055.8--37645.2-37776.4--37776.4

II/II 4,5,64,5,6-4,5,6,74,5,6,7

M(Tm)-4908.68-563.52-1516.44-17481674.76--6988.64-6988.64--8353.84-8353.84

N(T)-29469.3-1185.88-6391.12-987.59977.17--37046.3-37046.3--37177.4-37177.4

9I/I4,7-4,5,64,5,6,7-4,5,6,7

M(Tm)2307.2769.39628.91829.57-914.043136.84-3005.573682.353-3682.353

N(T)-11093.9-1102.54-227.15-175.87162.33-11269.8--12423.6-12448.9--12448.9

II/II 4,5,64,5,6-4,5,6,74,5,6,7

M(Tm)-2538.74-227.67-313.02-418.38350.27--3079.43-3079.43--3401.9-3401.9

N(T)-10654.7-1102.54-227.15-175.87162.33--11984.4-11984.4--12009.7-12009.7

CHNG 9: TNH TON CT THP DM- B tng mng v thn cng trnh cp bn B15 (mc M200#) c Rb= 8,5 MPa; Rbt= 0,75 MPa.- Ct thp: + Thp 12mm nhm CI c RS=RSC= 225MPa; RSW=175MPa. + Thp 12mm nhm CII c RS=RSC= 280MPa; RSW=225MPa.- Tra bng c: v 9.1 Tnh ton ct thp cho phn t 15 (b x h= 22 x 60 cm; L2= 7 m)FrameStationOutputCaseStepTypeNQM3


150BAOMax3243.94-10210.56-4193.04

153.4925BAOMax3243.941133.0815945.69

156.985BAOMax3243.9416372.87-2497.14

150BAOMin1264.59-17604.96-19526.83

153.4925BAOMin1264.59-2046.2210213.89

156.985BAOMin1264.599370.56-14336.1

T bng ni lc ta chn ra ni lc nguy him nht cho dm:+ Gi B: MB = -19526,83 daN.m=-195,268 KN.m+ Gi C: MC = -14336,1 daN.m =-143,361KN.m+ Nhp BC: MBC = 15945,69 daN.m =159,457.Qmax =17604,96 daN = 176,05 KN ti gi CDo 2 gi c momen gn bng nhau nn ta ly gi tr moomen ln hn tnh ct thp cho c hai.a1. Tnh ton ct thp chu m men m (ti gi B v C)Mmin = -19526,83 daN.mTnh theo tit din hnh ch nht b x h = 22 x 60 cm.Gi thit a = 4cm h0= 60 - 4 = 56cm.< nn b tr c thp n cho tit din.=0,5.(1-

Kim tra hm lng ct thp: a2.Tnh ton ct thp chu m men dng (ti nhp BC)Mmax= 159,457 kN.mTnh theo tit din hnh ch T c cnh nm trong vng nn vi . Gi thit a = 4cmh0= 60 - 4= 56cm.Gi tr vn ca cnh SC ly b hn cc tr s sau:- Mt na khong cch thng thy gia cc dm dc: (440-22)/2= 209cm.- 1/6 nhp cu kin : 6,985/6 = 116 cm SC= 116 cm.Tnh = 22 + 2.116= 254cm.Xc nh MC:MC= 1101,09kN.m > Mmax=159,457kN.mTrc trung ha i qua cnh, tnh ton tit din nh hnh ch nht c b x h = 22 x 60cm. < nn b tr c thp n cho tit din.=0,5(1-

Kim tra hm lng ct thp: b. Tnh ton ct thp chu ctQmax= 176,05 KNKim tra kh nng chu ng sut nn chnh ca b tng. Gi thit a =4cmh0= 60 - 4= 56 cm.Q> Qmax= 176,05 b tng kh nng chu ng sut nn chnh.Tnh: qsw= qsw,min= 0,25.Rbt.b= 0,25.0,75.22= 412,5 N/cm.La chn ct ai ng knh = 8mm vi 2 nhnh, din tch 1 nhnh l asw= 0,502cm2.Xc nh khong cch gia cc ct ai: s =Khong cch ct ai cn tha mn iu kin khng ln hn : 0,5h0= 28cm v nh hn smax= .Do la chn khong cch gia cc ct ai l s= 10cm.Kim tra iu kin trn tit din nghing nguy him nht c0 2h0:qsw= c0= 2h0= 2.56 = 112cm. tha mn iu kin v tit din nghing nguy him nht. La chn ct ai = 8cm vi 2 nhnh, khong cch gia cc ct ai l 10cm.9.2 9.1 Tnh ton ct thp cho phn t 10 (b x h= 22 x 30 cm; L2= 1,8 m)FrameStationOutputCaseStepTypeNQM3


100BAOMax620.983649.222082.91

100.9075BAOMax620.984193.27-306.43

101.815BAOMax620.984899.93131.72

100BAOMin-1025.19-1622.3-1543.92

100.9075BAOMin-1025.19-923.22-1494.24

101.815BAOMin-1025.19-379.17-5546.49

Mmax= 19,27 kN.m (ti gi A).Mmin= -37,55 kN.m (ta gi B).Qmax= 26,13 kN (ti gi B).a. Tnh ton ct thp dca1. Tnh ton ct thp chu m men m (ti gi B)Mmin= -37,55kN.mTnh theo tit din hnh ch nht b x h = 22 x30 cm.Gi thit a= 4cm h0= 30 -4= 26cm.< nn b tr c thp n cho tit din.=(1-

Kim tra hm lng ct thp: a2.Tnh ton ct thp chu m men dng (ti gi A)Mmax= kN.mTnh theo tit din hnh ch T c cnh nm trong vng nn vi . Gi thit a = 4cmh0= 30 - 4= 26cm.Gi tr vn ca cnh SC ly b hn cc tr s sau:- Mt na khong cch thng thy gia cc dm dc: (440-22)/2= 209cm.- 1/6 nhp cu kin : 1,8/6 = 30 cm SC= 30cm.Tnh = 22 + 30.2= 82cm.Xc nh MC:MC= 146,37 kN.m> Mmax=19,27kN.mTrc trung ha i qua cnh, tnh ton tit din nh hnh ch nht c b x h = 22 x 30cm. < nn b tr c thp n cho tit din.=(1-

Kim tra hm lng ct thp: b. Tnh ton ct thp chu ctQmax= 26,13kN. Kim tra kh nng chu ng sut nn chnh ca b tng. Gi thit a =4cmh0= 30 - 4= 26 cm.Q> Qmax= 26,13kN b tng kh nng chu ng sut nn chnh.Tnh: qsw= qsw,min= 0,25.Rbt.b= 0,25.1,2.22= 412 N/cm.La chn ct ai ng knh = 8mm vi 2 nhnh, din tch 1 nhnh l asw= 0,502cm2.Xc nh khong cch gia cc ct ai: s =Khong cch ct ai cn tha mn iu kin khng ln hn 0,5h0=23cm v nh hn smax= .Do la chn khong cch gia cc ct ai l s= 10cm.Kim tra iu kin trn tit din nghing nguy him nht c0 2h0:qsw= c0= 2h0= 2.26 = 52cm. tha mn iu kin v tit din nghing nguy him nht. La chn ct ai =8cm vi 2 nhnh, khong cch gia cc ct ai l 10cm9.3 B tr ct thp dmBng 9.1: B tr ct thp dmTn dmNi lcGi trRb(MPa)Rs(MPa)Ct thp dcAschn(cm2)Ctthpai

As(cm2)Chn

Dm B1Mmax(kN.m)159,458,52803,22206,3

Mmin(kN.m)-195,38,52806,32206,3

Qmax(kN)172,68,522528a10028a150

Dm B2Mdng(kN.m)159,458,52809,03209,42

Mm(kN.m)-195,38,52807,92201168,29

Qmax(kN)172,68,522528a10028a150

CHNG 10: TNH TON CT THP CTB tng mng v thn cng trnh cp bn B30 ( mc M350#) c = 8,5MP; = 0,75Mpa Ct thp: + Thp 12mm nhm CI c RS=RSC= 225MPa; RSW=175MPa. + Thp 12mm nhm CII c RS=RSC= 280MPa; RSW=225MPa.- Tra bng c: v 10.1. Tnh ton ct thp cho ct C1 (bh= 2222cm; H = 4,15m).a.S liu tnh tonChiu di tnh ton l0= 0,7H =0,7.4,15=2,905m mnh h= = 138 phi xt n nh hng ca un dcGi thit a=a=4cm h0 = hc a =22-4=18cmNi lc c chn t bng t hp ni lc dng tnh ton ct thp cho ct phn t 1 l:

Bng 10.1: Cc cp ni lc tnh ton ct phn t 1K hiu cc cp ni lcK hiu bng t hp ni lcc im ca cp ni lcM(kN.m)N(kn)e1 =M/N(cm)ea(cm)eo =max(ea,e1)(cm)

14,8M|max= emax18,3458,10431,560,7331,56

24,7Nmax8,7952,68716,6830,7316,683

34,5,6,8M,N ln13,067146,668,910,738,91

Vi Mdh = -11,2kN.m; Ndh = -46,3kNTrong lch tm ngu nhin e0 = max(ea,e1)ea - lch tm ngu nhin ea= max(H,c);e0 - lch tm ban u e0=max(ea,e1).b. Tnh ton ct thp i xng cho cp ni lc s 1 M=18,34 KN.mN=58,104 KNXc nh h s un dc 0,41,41,4Vi b tng ct thp thng 1H s k n nh hng ca lch tm c tnh theo cng thc 0,1711cm1H s k n nh hng ca ti trng di hn c tnh theo cng thc 1,5219521cm4Gi thit 1,5%291,06 cm4Lc dc ti hn c xc nh theo cng thc1193kNH s un dc c xc nh theo cng thc1,24T , ta xc nh c lch tm:17,1cm3,1cm9,1cm11,2cm8cm ct chu nn lch tm ln2,12cm2Kim tra hm lng ct thp0,55%>1,1%0,9% ct chu lch tm b. Cn phi tnh li x theo cng thc gn ng. Kim tra hm lng ct thp:c. Tnh ton tng t cho cp ni lc s 2 v 3M= 51,1kN.mN= 626,3kNTnh ton tng t ta c As= Kim tra hm lng ct thp: Sau khi tnh ton cho 3 cp ni lc, thin v an ton, ta ly din tch ct thp ln hn thit k ct thp cho ct. As= 10.3 Tnh ton ct thp cho ct C3 (b x h= 22 x 40cm; H=4,15m)a. S liu tnh ton: Chiu di tnh ton l0= 0,7H= 0,7.4,15= 2,905m. mnh phi xt n nh hng ca un dc.Gi thit a= a= 4cm h0=hc - a= 36cm.Ni lc c chn t bng t hp ni lc dng tnh ton ct thp cho ct C3 l: Bng 10.3: Cc cp ni lc tnh ton ct C3K hiu cp ni lcK hiu bng t hp ni lcc im ca cp ni lcM(kN.m)N(kN)e1=M/N(cm)ea(cm)e0=max(ea,e1)(cm)

14,894,98657,318,121,08,12

24,5,6,8Nmax25,3671,66,681,06,68

34,5,6,8M,N ln14,16774,16,681,06,68

Vi Mdh=63,42 kN.m; Ndh= 608,36kNTrong lch tm ngu nhin e0= max(ea,e1) ea - lch tm ngu nhin e0 - lch tm ban u e0= max(ea,e1).Tnh ton tng t vi cp ni lc 1 ta c As= .Tnh ton tng t vi cp ni lc 2,3 ta c As= .* Sau khi tnh ton cho 3 cp ni lc, thin v an ton, ta ly din tch ct thp ln hn thit k ct thp cho ct. As= .

10.4 B tr ct thpBng 10.4: B tr ct thp ctTn ctKch thc (cm)Rb(MPa)Rs(MPa)Ct thp dcC thp ai

As(cm2)chnAs chn(cm2

C122x228,52802252,122188,0426a15026a200

C222x308,528022514,8961815,2526a15026a200

C322x408,528022517,442021817,726a15026a200

* Tnh ton ct thp ai cho ct:+ ng knh ct ai: Ta chn ct ai 6 thuc nhm CI.+ Khong cch gia cc ct ai:- Trong on ni thp dc:s (10min; 500mm)= (10.18; 500mm) = 180mm.Chn s= 150mm.- Cc on cn li: s (15min; 500mm)= (15.18; 500mm) = 270mm. Chn s= 200mm.

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