BG XD nen duong-C1

BBI GII GINGNG

XY DXY DNG NNG NN N NGNG

NNI DUNGI DUNG1.Nh1.Nhng vng vn n chungchung2.Cng t2.Cng tc chuc chun bn b khi thi cng nkhi thi cng nn n ngng3.C3.Cc nguyn tc nguyn tc vc v phng phng n thi cng nn thi cng nn n ngng4.Thi cng n4.Thi cng nn n ng bng bng thng th cngcng5.Thi cng n5.Thi cng nn n ng bng bng mng myy6.Cng t6.Cng tc c m nm nn n t nt nn n ngng7.Thi cng n7.Thi cng nn n ng bng bng nng n phph8.Thi cng n8.Thi cng nn n ng nng cng nng cp mp m rrngng9.Thi cng n9.Thi cng nn n ng trn ng trn t yt yu u 10.Cng t10.Cng tc hoc hon thin thin vn v gia cgia c mmi taluy ni taluy nn n ngng11.Cng t11.Cng tc kic kim tra nghim tra nghim thum thu12.Thi cng c12.Thi cng cc cng trc cng trnh trn nh trn ngng

NHNHNG VNG VN N CHUNGCHUNG

1.Kh1.Khi nii nim vm v xy dxy dng ng ngngXy dXy dng ng ng lng l mmt cng tt cng tc bao gc bao gm m rrt nhit nhiu cng viu cng vic khc khc nhau nhc nhau nhm hom hon n ththnh cnh cc hc hng mng mc cng trc cng trnh cnh c trong trong n thin thit kt k ngng


CCc cng tc cng tc c y cy c thth rrt kht khc nhau, song c nhau, song cc thth khkhi qui qut tht thnh 3 lonh 3 loi:i:

-- SSn xun xut vt v cung ccung cp cp cc loc loi nguyn vi nguyn vt t liliu cho cu cho cc khu thi cngc khu thi cng

-- KK thuthut thi cng ct thi cng cc hc hng mng mc cng trc cng trnhnh-- TT chchc thi cng cc thi cng cc hc hng mng mc cng trc cng trnhnh


Theo cTheo cc nc ni dung trn, gii dung trn, gio tro trnh xy dnh xy dng ng ng ng c chia lc chia lm 4 phm 4 phn:n:

-- CCc xc x nghinghip php phc vc v xy dxy dng ng ngng-- KK thuthut thi cng nt thi cng nn n ngng-- KK thuthut thi cng mt thi cng mt t ngng-- TT chchc thi cng xy dc thi cng xy dngng


2.C2.Cc mn hc mn hc cc c lin quan lin quan-- C hC hc c tt-- NNn vn v mmngng-- VVt lit liu xy du xy dng ng -- MMy xy dy xy dngng-- ThiThit kt k ngng-- Kinh tKinh t xy dxy dngng


3.P3.Phng phhng php nghin cp nghin cuu Phng chm c Phng chm ca cng ta cng tc xy dc xy dng ng ng lng l

NhanhNhanh--nhinhiuu--tttt--rr nn trong qunn trong qu trtrnh nghin nh nghin ccu cu cc gic gii phi php sp sn xun xut vt v cung ccung cp vp vt lit liu, u, xxc c nh knh k thuthut thi cng, bit thi cng, bin phn php tp t chchc thi c thi cng cng u phu phi cn nhi cn nhc nhic nhiu phng u phng n n ttm m c phng c phng n tn tt nht nht tht tha mn phng a mn phng chm trnchm trn


ThThc tic tin xy dn xy dng ng ng rng rt phong pht phong ph vv a a ddng do:ng do:

-- CCu tu to co cc cng trc cng trnh rnh rt kht khc nhau,c nhau, i qua i qua nhinhiu vu vng khng kh hhu vu v a cha cht kht khc nhauc nhau

-- CCc ic iu kiu kin thi cng cn thi cng c thth cca ta tng cng ng cng trtrnh rnh rt kht khc nhauc nhau

VV vvy trong quy trong qu trtrnh hnh hc tc tp cp cng nh cng tng nh cng tc c sau nsau ny i hy i hi ngi ngi sinh vin ci sinh vin cng nh ngng nh ngi i ccn bn b kk thuthut pht phi chi chu khu kh c lc lp suy nghp suy ngh, , vvn dn dng sng sng tng too kikin thn thcc vvo tho thc tic tin mun n mun hhnh mun vnh mun v

CCC NGUYN TC NGUYN TC C BC C BN KHI N KHI XY DXY DNG NG NGNG

1. Ti1. Tit kit kimmCng trCng trnh xy dnh xy dng ng ng lng l ni t ni tp trung rp trung rt t nhinhiu nhn lu nhn lc, mc, my my mc thic thit bt b, s, s ddng nhing nhiu u vvt lit liu vu v titin vn vnnMuMun gin gim gim gi ththnh cng trnh cng trnh phnh phi xi xc c nh nh ng cng cc ic iu kiu kin thi cng, thi cng theo mn thi cng, thi cng theo mt t trtrnh tnh t phph hhp, tp, tm ti cm ti cc bic bin phn php kp k thuthut t ththch hch hp,p, i mi mi cng nghi cng ngh, t, t chchc thi cng c thi cng nhnhp nhp nhng ng m bm bo tio tit kit kim tm ti a ci a cc c ngungun ln lc trnc trn


2.2. t cht cht lt lngngQuy trQuy trnh thi cng vnh thi cng v nghinghim thu cm thu cc hc hng mng mc c cng trcng trnh nh u yu cu yu cu phu phi i t ct cc chc ch tiu chtiu cht t llng nhng nht t nh,nh, cng trcng trnh khi khai thnh khi khai thc c n n nh vnh v bbn vn vngngMuMun vn vy trong quy trong qu trtrnh thi cng phnh thi cng phi tun thi tun thnghinghim ngm ngt ct cc quy trc quy trnh, quy phnh, quy phm thi cng; m thi cng; tt chchc tc tt khu kit khu kim tra trong sum tra trong sut qut qu trtrnh nh thi cng; nghin cthi cng; nghin cu u p dp dng cng cc loc loi vi vt lit liu u mmi, cng nghi, cng ngh thi cng tin tithi cng tin tin trong cn trong c n nc c vv trn thtrn th gigiii


3.3. m bm bo tio tin n ViVic sc sm a cng trm a cng trnh vnh vo khai tho khai thc vc va a mang lmang li li li i ch cho nhch cho nh ththu xy du xy dng (nhanh ng (nhanh quay vng vquay vng vn lu n lu ng, sng, sm thu hm thu hi ci cc thic thit t bb mmy my mc thi cng,...) vc thi cng,...) va mang la mang li li li i ch ch chung cho nchung cho nn kinh tn kinh t ququc dn c dn ((y nhanh thy nhanh thi i kk hohon vn vn cn ca a ng, ging, gim chi phm chi ph vvn tn ti, i, ththc c y ny nn kinh tn kinh t hhng hng ha pha pht trit trin, tn, to o iiu kiu kin giao lu vn hon giao lu vn ho gigia ca cc vc vng ming min, n, tto tio tin n cho scho s phpht trit trin hn hi hoi ho, c, cn n i, i, ...)...)


m bm bo hoo hon thn thnh vnh v v vt tit tin n ccn:n:-- LLp tip tin n thi cng phthi cng ph hhp vp vi ci cc ic iu kiu kin cn c thth vv: :

ttnh chnh cht cng trt cng trnh,nh, i iu kiu kin thi cng, khn thi cng, kh nng cung nng cung ccp mp my my mc thic thit bt b, nhn l, nhn lc cc ca n va n v

-- TTp trung nhn lp trung nhn lc, vc, vt lt lc c hohon thn thnh snh sm cm cc hc hng ng mmc cng tc cng tc trc trng ing imm

-- ThThng xuyn king xuyn kim tra tim tra tin n trong qutrong qu trtrnh thi cng nh thi cng cc ccc ic iu chu chnh nhanh chnh nhanh chng, hng, hp l, kp l, kp thp thii

-- TT chchc tc tt khu cung ct khu cung cp vp vt tt t, v, vn chuyn chuyn trong sun trong sut t ququ trtrnh thi cngnh thi cng


4. An to4. An tonnCng tCng tc xy dc xy dng ng ng cng c thth phphi tii tin hn hnh nh trong ctrong cc ic iu kiu kin n a ha hnh khnh kh khn hi khn him trm tr, , ss ddng cng cc thic thit bt b mmy my mc cc cng kng knh, cng nh, cng susut lt ln; dn; dng cng cc loc loi nguyn vi nguyn vt lit liu ru rt dt dchchy ny n ( (xngxng, d, du, ku, kp mp mn, thun, thuc nc n, ...) nn , ...) nn trong qutrong qu trtrnh thinh thit kt k ccc bic bin phn php kp k thuthut t thi cng, trong quthi cng, trong qu trtrnh tnh t chchc thi cng phc thi cng phi i ththng xuyn nghin cng xuyn nghin cu, thiu, thit kt k, ki, kim tra cm tra cc c bibin phn php p m bm bo an too an ton lao n lao ng, trng, trnh cnh cc c tai ntai nn n ng ting tic cc c thth xxy ray ra

CCC PHNG PHC PHNG PHP TP T CHCHC THI C THI CNG CNG

1.Kh1.Khi nii nimmTT chchc thi cng lc thi cng l vivic tic tin hn hnh hnh hng long loi ci cc c bibin phn php tp tng hng hp nhp nhm bm b trtr ng lng lc,c, ng ng chch mmi ngui ngun ln lc xy dc xy dng cng cn thin thit t titin n hhnh xy dnh xy dng ng ng;ng; ng thng thi xi xc c nh r nh r thth tt ss ddng vng v quan hquan h tng h tng h gigia ca cc c ngungun ln lc c y trong suy trong sut tht thi gian thi cng i gian thi cng m bm bo hoo hon thn thnh cng trnh cng trnh nh ng thng thi hi hn, n, vvi chi cht lt lng tng tt, git, gi ththnh rnh r

CCC PHNG PHC PHNG PHP TP T CHCHC THI C THI CNGCNG

2.C2.Cc phng phc phng php tp t chchc thi cng (c thi cng (PPTCTC)PPTCTC)-- Phng phPhng php tp t chchc thi cng tuc thi cng tun tn t-- Phng phPhng php tp t chchc thi cng song songc thi cng song song-- Phng phPhng php tp t chchc thi cng dy chuyc thi cng dy chuynn

MMi PPTCTC khi PPTCTC khc nhau sc nhau s gigii quyi quyt vt vn n ttchchc lc lc lc lng thi cng, vng thi cng, vn n phphi hi hp cp cc c khu thi cng vkhu thi cng v khng gian, thkhng gian, thi gian theo ci gian theo cc c ccch khch khc nhau;c nhau; do do yu cyu cu vu v khu cung khu cung ng vng vt tt t, tr, trnh tnh t a c a cc oc on n ng vng v ssddng cng cng khng khc nhauc nhau

CCC PHNG PHC PHNG PHP TP T CHCHC THI C THI CNGCNG

CCng mng mt t i ti tng thi cng, nng thi cng, nu chu chn n PPTCTC khPPTCTC khc nhau sc nhau s ddn tn ti ci cc phng c phng n thin thit kt k tt chchc thi cng hoc thi cng hon ton ton n khkhc nhauc nhauMuMun TCTC tn TCTC tt,t, t hit hiu quu qu cao phcao phi tii tin n hhnh thinh thit kt k tt chchc thi cng trn c sc thi cng trn c smmt PPTCTC tin tit PPTCTC tin tin vn v ththch hch hp vp vi ci cc c iiu kiu kin cn c thth cca cng tra cng trnh.nh.

PHN LOPHN LOI I -- C IC IM CNG TM CNG TC C XY DXY DNG NG NGNG

1.Phn lo1.Phn loi cng ti cng tc xy dc xy dng ng ng (Xng (XDD))Theo nghTheo ngha, a, phng tiphng tin sn sn xun xut st s ddng ng

vv ttnh chnh cht tt t chchc, cc, cc cng tc cng tc XD c XD c phn lc phn lm 3 nhm 3 nhm:m:

-- Cng tCng tc chuc chun bn b-- Cng tCng tc vc vn chuyn chuynn-- Cng tCng tc xy lc xy lpp


a)Cng ta)Cng tc chuc chun bn bBao gBao gm cm cc cng tc cng tc chuc chun bn b ccc loc loi vi vt lit liu u xy dxy dng, cng, cc loc loi bi bn thn thnh phnh phm, cm, cc loc loi ci cu u kikin n c sc sn dn dng trong xy dng trong xy dng ng ngngCng tCng tc chuc chun bn b th thng do cng do cc xc x nghinghip php phc c vv xy dxy dng ng ng cng ca ca cc n vc n v thi cng thi cng m m nhnhn nhn nh: c: cc mc m khai thkhai thc & gia cng vc & gia cng vt lit liu u llm m ng, cng, cc c sc c s gia cng nhgia cng nha a ng & ng & chch tto nho nh tng tng, c, cc trc trm trm trn BTN&BTXM, n BTN&BTXM, ccc xc x nghinghip chp ch tto co cu kiu kin BTXM & BTXMCTn BTXM & BTXMCT


b)Cng tb)Cng tc vc vn chuyn chuynnLL vivic ic iu u ng cng cc loc loi vi vt lit liu xy du xy dng, bng, bn n ththnh phnh phm vm v ccc cc cu kiu kin n c sc sn tn t ni khai ni khai ththc, gia cng, chc, gia cng, ch tto o n ni sn ni s ddng ng Bao gBao gm:m:

-- VVn chuyn chuyn vn vt lit liu tu t mm n tuyn tuynn-- VVn chuyn chuyn vn vt lit liu tu t mm n xn x nghinghip php ph-- VVn chuyn chuyn cn cc bc bn thn thnh phnh phm vm v ccu kiu kin n

c sc sn tn t ccc xc x nghinghip php ph n tuyn tuynn


c)Cng tc)Cng tc xy lc xy lppLL ccc cng tc cng tc trc trc tic tip hop hon thn thnh cnh cc c hhng mng mc xy lc xy lp nhp nh: c: cng, kng, k, n, nn n ng, mng, mt t ng, ng,


Cng tCng tc nc ny y c chia lc chia lm 2 lom 2 loi:i:-- Cng tCng tc tc tp trung: lp trung: l ccc cng tc cng tc cc c khkhi i

llng ng c bic bit lt ln, kn, k thuthut thi cng pht thi cng phc tc tp, p, ss ddng cng cc thic thit bt b c chc chng & hng & hu nh khng u nh khng llp lp li i o on n ng khng khc c

-- Cng tCng tc dc dc tuyc tuyn: cn: c khkhi li lng tng ng tng i i ng ng u trn mu trn mt n vt n v chichiu du di tuyi tuyn, cn, c kkthuthut thi cng lt thi cng lp i lp i lp lp li mi mt ct cc chu kc chu k


m bm bo hoo hon thn thnh cng trnh cng trnh nh ng ng titin n , bao gi, bao gi ccng phng phi ti tp trung cp trung cc c ngungun ln lc thi cng nhc thi cng nhm hom hon thn thnh snh sm m ccc hc hng mng mc cng tc cng tc tc tp trung trp trung trc khi c khi cng tcng tc dc dc tuyc tuyn trin trin khai n khai nn


2.2. c ic im cm ca cng ta cng tc xy dc xy dng ng ngng-- DiDin thi cng hn thi cng hp vp v kko do dii-- Ni lNi lm vim vic cc ca n va n v thi cng th thi cng thng ng

xuyn thay xuyn thay ii-- KhKhi li lng cng tng cng tc phn bc phn b khng khng u u

trn tuytrn tuyn n -- ChChu u nh hnh hng trng trc tic tip cp ca ca cc ic iu u

kikin khn kh hhu, thu, thi tii titt


DiDin thi cng hn thi cng hp vp v kko do diiDiDin thi cng (phn thi cng (phm vi thi cng) lm vi thi cng) l chichiu ru rng ng ddi i t mt m n v n v thi cng thi cng c phc php p o,o, t, bt, b trtr ccc phng tic phng tin thi cng, tn thi cng, tp kp kt vt vt t liliu, u, th thng chng ch rrng vng vi mi mt t n vn vi chi chc c mmt song lt song li ki ko do di vi vi km i km n vn vi chi chc kmc km

i iu nu ny gy khy gy kh khn cho cng t khn cho cng tc kic kim tra m tra iiu hu hnh snh sn xun xut; cho vit; cho vic bc b trtr llc lc lng thi ng thi cng, hcng, hn chn ch mmy my mc vc v nhn lnhn lc phc pht huy t huy nng sunng sut t


Ni lNi lm vim vic cc ca n va n v thi cng th thi cng thng xuyn ng xuyn thay thay ii

KhKhc vc vi ci cc dy chuyc dy chuyn sn sn xut cng nghin xut cng nghip: p: nguyn vnguyn vt lit liu di chuyu di chuyn qua cn qua cc khu gia cng c khu gia cng ththnh snh sn phn phm, cm, cc tuyc tuyn n ng phng phi thi i thi cng ncng nm cm c nh,nh, n v n v thi cng phthi cng phi di i di chuychuyn thn thng xuyn trn tuyng xuyn trn tuyn n hohon thn thnh nh ng cng cc khc khi li lng cng tng cng tc cc ca ma mnhnh

i iu nu ny gy khy gy kh khn cho vi khn cho vic bc b trtr chch n n cho cng nhn & ccho cng nhn & cn bn b kk thuthut, cho vit, cho vic bc b trtrccc kho tc kho tng, sng, sa cha cha xe ma xe myy


KhKhi li lng cng tng cng tc phn bc phn b khng khng u u trn tuytrn tuynnKhKhi li lng thi cng ng thi cng ccc oc on n ng ng khkhc nhau lc nhau l rrt kht khc nhau, nhic nhau, nhiu ku kthuthut thi cng ct thi cng cng cng c ss khkhc bic bit git gia a ccc oc on, gy khn, gy kh khn cho vi khn cho vic tc t chchc c thi cng dy chuythi cng dy chuyn; cho cng tn; cho cng tc tc t chchc c iiu hu hnh snh sn xun xutt


ChChu u nh hnh hng trng trc tic tip cp ca ca cc ic iu kiu kin khn kh hhu, thu, thi i tititt

i a si a s ccc hc hng mng mc cng tc cng tc trong xy dc trong xy dng ng ng ng u phu phi trii trin khai vn khai v titin hn hnh nh ngongoi tri tri, vi, v thth ccc c yyu tu t khkh hhu, thu, thi tii tit t u cu c nh hnh hng trng trc tic tip p n n ququ trtrnh thi cng nh thi cng

i iu kiu kin thi cng khng thun thi cng khng thun ln li ci c thth phph vv titin n thi cng dthi cng d kikin; ln; lm gim gim chm cht lt lng cng trng cng trnh, lnh, lm m tng chi phtng chi ph xy dxy dng do mng do my my mc nhn lc nhn lc phc phi li lm m vivic gic gin on on hon hoc do cc do cc hc hng mng mc cng trc cng trnh ang nh ang tritrin khai bn khai b h h h hngng


khkhc phc phc cc cc c c ic im trn cm trn cn:n:-- ThiThit kt k s s hohot t ng cng ca ma my my mc thc tht ht hp l, mp l, my y

mmc hoc hot t ng khng cng khng cn trn tr nhau, phnhau, pht huy t huy c nng c nng susutt

-- SS ddng cng cc phng tic phng tin thin thit bt b cc khkh nng c nng c ng ng caocao

-- CCc hc hng mng mc cng trc cng trnh trn nh trn ng cng cn n c thic thit kt k nh hnh hnh, thunh, thun ln li cho khu thi cng i cho khu thi cng

-- C giC gii hoi ho ng bng b ccc cng tc cng tc xy dc xy dng ng ng, cng, cggng sng s ddng ngng ngy cy cng nhing nhiu cu cc bc bn thn thnh phnh phm & m & ccu kiu kin n c sc snn

MMT ST S HNH HNH NH VNH VCNG TCNG TC XY DC XY DNG NG

NG TNG T

YU CYU CU U I VI VI CNG TI CNG TC XY C XY DDNG NNG NN N NGNG

1.C1.Cc bic bin dn dng h hng h hng ing in hn hnh cnh ca na nn n ngng-- BB bbo mn, phong hoo mn, phong ho-- XXi li l, s, st lt l-- Co ngCo ngtt-- LLnn-- SSpp-- SStt-- TrTrtt


a)Ba)B bbo mn, phong hoo mn, phong hoMMi taluy ni taluy nn n o, no, nn n p cp c thth bb bbo mn, o mn, phong hophong ho do gido gi, bo, b, bo, bc xc x mmt trt tri, khng i, khng khkh, , CCc mc mi taluy i taluy o bo b phong hophong ho nnng cng c thth ddn n n tn tnh trnh trng ng ll, , ln ln, s, st, t, trtrt.t.

VV vvy cy cn cn c ccc bic bin phn php bp bo vo v vv gia cgia ctaluy ntaluy nn n ng cho phng cho ph hhp vp v kinh tkinh t..


b)Xb)Xi li l, s, st lt lNNn n ng cng c thth bb xxi li l, s, st lt l do n do nc mac ma, , nnc ngc ngm, sm, sng vng v. X. Xi li l cc thth llm h hm h hng ng ccc bc b phphn cng trn cng trnh nh ng, cng, c thth ll mmt t trong nhtrong nhng nguyn nhn dng nguyn nhn dn n n sn st lt l, s, st, t, trtrt.t.CCu tu to vo v xxc c nh nh ng khng khu u ccc cng c cng trtrnh thonh thot nt nc; Cc; Cu tu to co cc bic bin phn php bp bo vo vvv gia cgia c taluy ntaluy nn n ng hng hp l cp l c thth hhn chn ch c hic hin tn tng xng xi li l, s, st lt l..


c)Co ngc)Co ngttNNn n ng cng c thth bb co ngco ngt, bit, bin dn dng hng hnh nh hhc nc nu u c c p bp bng cng cc loc loi i t st st ct c m lm ln,n, t ct c chcha nhia nhiu tu tp chp cht ht hu cu cVV vvy y t t p np nn n ng chng ch nn chnn chn n t ct cccp php phi hi ht tt tt, t, ccng ng cao, chcao, ch ss ddo o khng qukhng qu lln, n, t cht cha ca cc tc tp chp cht ht hu cu c


d)Ld)Lnnll bibin dn dng c bng c bn cn ca na nn n ngng

Thng th Thng thng nng nu u c c m nm nn chn cht,t, c c p trn mp trn mt nt nn n t t c cng ng , n, nn n ng ng ss xuxut hit hin mn mt t lln nhn nht t nh trong qunh trong qutrtrnh khai thnh khai thc do trc do trng lng lng bng bn thn nn thn nn n ng, cng, cc lc lp mp mt t ng vng v hohot tt ti ti tc dc dng ng llm nm nn n ng chng cht thmt thm

BiBin dn dng lng ln nn ny phy pht trit trin n u theo chiu theo chiu u ngang vngang v khng v khng vt qut qu mmt trt tr ss nhnht t nh nh thth khng gy nguy hikhng gy nguy himm


Nhng do t Nhng do ti tri trng xe cng xe c ttc dc dng khng ng khng u nn biu nn bin dn dng lng ln dn dng nng ny thy thng lng llln khng n khng u, lu, lm trm trc ngang c ngang ng bng bmmo mo m, bi, bin dn dngng

TrTrng hng hp np nn n ng ng p trn p trn t yt yu cu cthth xuxut hit hin bin bin dn dng lng ln cn ca na nn n ng vng vo trong no trong nn n t yt yuu


2.Yu c2.Yu cu u i vi vi ni nn n ngngQua cQua cc hc hnh thnh thc h hc h hng trn, dng trn, d ddng nhng nhn thn thy ny nn n ng lng l bb phphn chn ch yyu cu ca cng tra cng trnh nh ng, lng, l nnn n ttng cng ca ka kt ct cu u o o ng bn trnng bn trn

C Cng ng & & n n nh cnh ca na nn n ng sng s quyquyt t nh nh n cn cng ng , tu, tui thi th vv chcht lt lng sng s ddng cng ca ma mt t ngngYu cYu cu u i vi vi ni nn n ng lng l trong btrong bt kt k i iu kiu kin bn bt t lli ni no, no, nn n ng cng cng phng phi ci c c cng ng , , khkh nng chnng chng lng li ti tc dc dng phng ph hohoi ci ca ca cc nhn tc nhn t bn bn ngongoii


CCc yc yu tu t nh hnh hng ng n cn cng ng & & n n nh cnh ca na nn n ng:ng:

-- ChCht lt lng cng ca a n thin thit kt k nnn n ng vng v ccc c cng trcng trnh thonh thot nt ncc

-- TTnh chnh cht ct ca a t nt nn n ng ng -- Phng phPhng php p p p tt-- ChCht lt lng cng tng cng tc c m nm nn n tt-- CCc bic bin phn php thop thot nt ncc-- CCc bic bin phn php bp bo vo v nnn n ng ng

PHN LOPHN LOI I T NT NN N NGNG

1.Theo TCVN 57471.Theo TCVN 5747--1993 (TC phn lo1993 (TC phn loi i t xy t xy ddng)ng)

-- DDa va vo tho thnh phnh phn kn kch thch thc hc ht chit chim u m u thth trong trong t t chia lchia lm 2 nhm 2 nhm lm ln ln l t ht ht t th vth v t ht ht mt mnn

-- DDa trn ha trn hm lm lng cng cc hc ht t phn chia phn chia t t hht th tht th thnh cnh cc phc ph nhnhmm

-- DDa trn Wa trn WLL, W, WPP, I, IP P phn chia nhphn chia nhm m t ht ht t mmn thn thnh cnh cc phc ph nhnhmm


2.Theo 2.Theo AASHTOAASHTO u tin u tin c c xuxut theo H.t theo H.R.B R.B (Highway (Highway

Reseach Board)Reseach Board) phn lophn loi i t lt lm vm vt lit liu u ddng trong xy dng trong xy dng ng ngng

-- DDa va vo tho thnh phnh phn kn kch thch thc hc ht chit chim u m u thth trong trong t t chia thchia thnh hai nhnh hai nhm lm ln ln l t t ddng hng ht vt v t st st bt bnn

-- DDa trn ha trn hm lm lng cng cc hc ht vt v WWLL, W, WPP, I, IP P phn chia cphn chia cc phn nhc phn nhm m tt


3.Theo m3.Theo mc c o kho kh ddDDa va vo phng pho phng php thi cng bp thi cng bng thng thcng, bcng, bng mng my, by, bng nng n phph phn phn loloi i tt

PHN LOPHN LOI CNG TRNH NI CNG TRNH NN N NG NG

Cn c Cn c vvo kho khi li lng cng tng cng tc nc nn n ng ng phn lophn loi:i:

-- oon nn nn n ng cng c khkhi li lng tng tp trung: lp trung: l ccc c oon nn nn n ng cng c khkhi li lng ng c bic bit lt ln, kn, kthuthut thi cng pht thi cng phc tc tp, sp, s ddng cng cc thic thit bt b c c chchng vng v hhu nh khng lu nh khng lp lp li i ccc oc on n ng khng khcc

VD: +VD: + o on n ng ng o su,o su, p cao cp cao c khkhi i llng trn 5000mng trn 5000m33/100m d/100m dii

+ + oon nn nn n ng ng o qua o qua ccngng + + oon nn nn n ng ng p qua p qua t yt yuu

PHN LOPHN LOI CNG TRNH NI CNG TRNH NN N NGNG

-- oon nn nn n ng cng c ttnh chnh cht dt dc tuyc tuyn: cn: c khkhi i llng phn bng phn b tng tng i i ng ng u trn mu trn mt n t n vv chichiu du di tuyi tuyn, cn, c kk thuthut thi cng lt thi cng lp i lp i lp p lli mi mt ct cch chu kch chu k

m bm bo hoo hon thn thnh cng trnh cng trnh nnh nn n ng ng ng ting tin n , bao gi, bao gi ccng phng phi ti tp trung ngup trung ngun n llc thi cng nhc thi cng nhm hom hon thn thnh snh sm cm cc oc on n nnn n ng cng c ttnh chnh cht tt tp trung trp trung trc khi oc khi on n nnn n ng cng c ttnh chnh cht dt dc tuyc tuyn trin trin khai n khai nn

TRNH TTRNH T CHUNG THI CNG NCHUNG THI CNG NN N NGNG

1.Cng t1.Cng tc chuc chun bn b tr trc khi thi cng c khi thi cng a)Chua)Chun bn b vv mmt kt k thuthut t -- Nghin cNghin cu hu h s thi s thit kt k kk thuthut t -- thi cngthi cng-- Khi phKhi phc cc ccc-- nh phnh phm vi thi cng m vi thi cng -- LLp hp h ththng cng cc dc duu-- DDn dn dp mp mt bt bng thi cng ng thi cng -- Ln khun, phLn khun, phng dng dng nng nn n ngng-- LLm m ng tng tmm-- LLm hm h ththng thong thot nt nc tc tm thm thii


b)Chub)Chun bn b vv mmt tt t chchcc-- TT chchc bc b mmy quy qun l, chn l, ch o thi cng (o thi cng (Ban Ban

iiu hu hnh)nh)-- Xy dXy dng lng ln trn tri, kho ti, kho tngng-- ChuyChuyn qunn qun-- ng k tng k tm trm tr vvi chi chnh quynh quyn n a phnga phng-- iiu tra phong tu tra phong tc tc tp qup qun cn ca a a phnga phng-- iiu tra tu tra tnh hnh hnh khnh kh hhu, thuu, thu vn vn


2.C2.Cc cng tc cng tc thi cng nc thi cng nn n ng ng -- XXi i tt-- o,o, p, vp, vn chuyn chuyn n tt-- TTi ni nc tc to do dnh bnh bm gim gia ca cc lc lp p t t

pp-- San rSan ri i tt-- m nm nn n tt-- HoHon thin thin nn nn n ngng-- LLm hm h ththng thong thot nt nc, c, ngn nngn nc vc v

ccc cng trc cng trnhnh bbo vo v nnn n ng (nng (nu cu c))

CCC PHNG PHC PHNG PHP THI CNG P THI CNG NNN N NGNG

1. Thi cng n1. Thi cng nn n ng bng bng thng th cngcng-- ChCh yyu du da va vo so sc ngc ngi & ci & cc dc dng cng c th s th s

hohoc cc ci tii tin n ththc hic hin cn cc thao tc thao tcc-- CC nng su nng sut tht thp, thp, thi gian thi cng ki gian thi cng ko do di,i,

iiu kiu kin ln lm vim vic nc nng nhng nhc, chc, cht lt lng thng thp, p, gigi ththnh caonh cao

-- ChCh nn snn s ddng ng ni khng th ni khng th ss ddng ng c c mmy my mc hoc hoc mc my my mc hoc hot t ng khng hing khng hiu u ququ nh nh: kh: khi li lng nhng nh, phn t, phn tn, din, din thi n thi cng hcng hp, p,


2. Thi cng n2. Thi cng nn n ng bng bng mng myy-- ChCh yyu du da va vo so sc mc my nhy nh: M: My y o, o,

mmy y i, mi, my cy cp, mp, my san, my san, my lu, y lu, ththc hic hin cn cc thao tc thao tcc

-- CC nng su nng sut cao, tht cao, thi gian thi cng i gian thi cng c c rrt ngt ngn, cn, ci thii thin n c ic iu kiu kin ln lm m vivic, chc, cht lt lng cao, ging cao, gi ththnh hnh h

-- c c p dp dng phng ph bibin trong xy dn trong xy dng ng nnn n ng hing hin nayn nay


3.Thi cng n3.Thi cng nn n ng bng bng thung thuc nc n-- SS ddng cng cc thic thit bt b khoan khoan, , o to to lo l mmn rn ri i

nnp thup thuc, gy nc, gy n, d, dng nng lng nng lng to lng to ln cn ca a thuthuc nc n khi nkhi n o o p hop hoc vc vn chuyn chuyn n t t

-- ThThi gian thi cng i gian thi cng c rc rt ngt ngn, n, khng i hkhng i hi i nhinhiu mu my my mc vc v nhn lnhn lc phc phi hi hp, gip, gi ththnh nh cao, dcao, d gy cgy cc tai nc tai nn lao n lao ngng

-- p dp dng khi thi cng nng khi thi cng nn n ng ng o qua o qua ccng hong hoc trong trc trong trng hng hp khp khc mc m mmy my mc c vv nhn lnhn lc khi thi cng nc khi thi cng nn n ng khng phng khng pht t huy huy c nng suc nng sut t


4.Thi cng n4.Thi cng nn n ng bng bng sng sc nc ncc-- SS ddng cng cc thic thit bt b phun n phun nc vc vi i p lp lc c

cao cao o o t, dt, dng cng cc mc mng dng dn vn vn n chuychuyn hn hn hn hp np nc c -- t t n ni n ni p p hohoc ni c ni

-- Khng i hKhng i hi nhii nhiu mu my my mc vc v nhn lnhn lc c phphi hi hp, gip, gi ththnh thnh thp, p, nng sunng sut cao t cao nhng chnhng ch phph hhp khi cng trp khi cng trnh gnh gn n ngungun nn nc,c, i in,n, t lt l loloi i t thot thot t nnc tc tt, dt, d m nm nnn

-- n nc ta hic ta hin nay cha n nay cha p dp dng phng ng phng phphp thi cng np thi cng nn n ng nng nyy

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