safetrongtinhtoansanbtct-130525121055-phpapp01

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected]

SAFE TRONG TNH TON SN BTCT

Bi 1: Tnh ton sn BTCT t kt qu ca ETABS Cc bc thc hin

1) Xut kt qu t Etabs

2) Nhp kt qu vo SAFE


3) Run

4) Khai thc kt qu ni lc

Show Deformed Shape: xem chuyn v ca h kt cu sn Show Slab Force: Xem ni lc phn t sn


Show Beam Force: xem ni lc phn t dm


Show Strips Forces: xem ni lc tng dy ca sn (gm lc ct v moment un theo 2 phng X v Y), dng khai thc ni lc dy trn ct v dy di ct ca h thng sn nm, sn khng dm

Show Reactions Forces: Xem phn lc ti v tr ct (hay vch cng) h kt cu sn

Show Output Table: Xut kt qu ra dng File Text


Bi 2: Tnh ton sn phng t m hnh mu ca SAFE Cc m hnh mu cu SAFE 1/ M hnh sn phng (Flat Slab)


Along X Direcion: cc kch thc theo phng X

Left Edge Distance: khong cch cnh pha bn tri Right Edge Distance: khong cch cnh pha bn phi Number of Spans: S nhp theo phng X Spacing: khong cch gia cc li

Along Y Direcion: cc kch thc theo phng X Top Edge Distance: khong cch cnh pha trn trc Y Bottom Edge Distance: khong cch cnh pha di trc Y Number of Spans: S nhp theo phng Y Spacing: khong cch gia cc li

Slab Thickness: chiu dy bn sn Column Size (square): din tch tit din ct Column Height Below: chiu cao ct di Dead load: Tnh ti phn b trn sn Live load: Hot ti phn b trn sn Drop panel: m ct sn (sn nm)

Size (square): din tch m ct Thickness: chiu dy m ct


Cc kch thc hnh hc ca m ct (Drop panel) u c th thay i c bng cch Click chut vo phn t Panel v bm chut phi, s xut hin bng d liu thay i


2/ nh ngha cc c trng hnh hc ca sn-dm-ct-vch cng

nh ngha c trng hnh hc sn


Modulus of elasticity: Modul n hi ca b tng (VD: M300 =28500Mpa = 28500.00 Ton= 28500.000kN) Poissons ratio: h s Possion Unit Weight: trng lng ring ca b tng (2.5Ton = 25kN) Type: dng phn t sn Thickness: chiu dy phn t sn Design Property Data: cc c trng ct thp thit k ct thp cho sn X Cover Top (to Centroid): khong cch ct thp pha trn theo phng X

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Y Cover Top (to Centroid): khong cch ct thp pha trn theo phng Y X Cover Bottom (to Centroid): khong cch ct thp pha di theo phng X Y Cover Bottom (to Centroid): khong cch ct thp pha di theo phng Y Concrete Strength, fc: Cng chu nn ca b tng Reinforcing Yield stress, fy: cng chu ko ca ct thp nh ngha c trng hnh hc dm:

3/ nh ngha cc trng hp ti


4/ nh ngha cc t hp ti trng

5/ Gn c trng hnh hc cho sn

6/ Khai bo ti trng trn b mt sn


Trong trng hp khai bo tnh ti, hot ti ri, nhng c thm ti trn sn th dng trng hp ny khai bo thm, chng trnh s cng thm vo vi ti ng tc dng ln sn. 7/ Gii bi ton

8/ Khai thc kt qu C 2 gi tr cn quan tm khi gii sn khng dm, l gi tr Moment-Lc ct theo tng dy (Strip) cho dy trn ct v dy di ct theo phng X v phng Y


Biu Moment theo phng X (trng hp tnh ti)


Biu Moment theo phng Y (trng hp tnh ti)

Biu Lc ct theo phng X (trng hp tnh ti)


Biu Lc ct theo phng Y (trng hp tnh ti) Xem kt qu bng s:

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Ghi kt qu thnh file text:

Kt qu ni lc cc dy trn ct v cc dy di ct

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Kt qu ni lc tng phn t Bi 3: Tnh ton sn BTCT c dm bao quanh chu vi sn

Depth (X): chiu cao dm theo phng X Stem With (X): chiu rng dm theo phng X Depth (Y): chiu cao dm theo phng Y Stem With (Y): chiu rng dm theo phng Y



2/ Gn c trng vt liu cho sn-dm Chn sn:


Chng trnh s t ng gn cc phn t sn (SLAB), dm (BEAM) v phn t m ct (DROP), phn t ct (COL) nhng v tr tng ng

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] 3/Gii bi ton

4/ Khai thc kt qu a. Xem chuyn v ca sn, ni lc phn t theo tng dy ca sn


Displacements: chuyn v nt ca h kt cu Reactions: phn lc gi ta trn sn Integrated Strip Moments and Shears: Moment v lc ct ca tng dy ca sn Beam Element Moment and Shears: Moment v lc ct ca phn t dm Slab Element Moment and Shears: Moment v lc ct ca tng nt ca phn t sn v m ct

Kt qu chuyn v nt (UZ l chuyn v theo phng Z) RX v RY l chuyn v xoay theo X v Y.


Kt qu ni lc ca phn t sn C th xut kt qu ni lc v chuyn v thnh File Excel nh sau:


STRIP WIDHT (WIDTH): b rng ca dy sn (gm dy theo phng X v Y, gi tr moment v lc ct tng ng. STATION X-ORDINATE (X): khong cch theo trc X so vi gc ta * Chng trnh tnh c b rng ca tng dy tng ng vi gi tr moment v lc ct tng ng, gip vic tnh ct thp c thun tin v n gin hn

Bi 4: Tnh ton sn phng theo 2 phng nhp 12m 1/ Khai bo c trng hnh hc


Lu : Cc dm s c quy nh nh sau

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Cc kch thc hnh hc ca m ct (Drop panel) u c th thay i c bng cch Click chut vo phn t Panel v bm chut phi, s xut hin bng d liu thay i

2/ Khai bo c trng vt liu thay i c trng tit din dm

thay i c trng sn

thay i ti trng tc dng ln sn, click chut chn sn, khi chn sn s c nt t bao quanh nh hnh di

3/Gii bi ton

4/ Khai thc kt qu a.Xem chuyn v ca sn, ni lc phn t theo tng dy ca sn

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Bi 5: Mng b trn nn n hi (tm trn nn n hi) 1/ To m hnh hnh hc bi ton

Along X Direction

Left Edge Distance: khong cch theo cnh bn tri Right Edge Distance: khong cch theo cnh bn phi Number of Spans: S nhp theo phng X Spacing: khong cch

Along Y Direction Top Edge Distance: khong cch theo cnh trn Bottom Edge Distance: khong cch theo cnh di Number of Spans: S nhp theo phng Y Spacing: khong cch

Mat thickness: chiu dy bn mng b Typical Point Load (Dead): tnh ti tp trung (ti v tr ct) Typical Point Load (Live): hot ti tp trung (ti v tr ct) Load size: din tch truyn ti Soild Modulus: Modul n hi ca t nn


2/ Thay i c trng tit din ca mng b

Mun thm sn cho mng b, khai bo c trng tit din sn mng b, sau dng biu tng v dm cho bn mng b (tng t cng c to phn t dm ca Etabs) Sn mng b c th khai bo c trng tit din ch T lt ngc bng cch:


Wed width at Top: b rng ch T pha bn trn Wed width at Bottom: b rng ch T pha di Depth: chiu cao tit din ch T (sn mng b) Flange Width: chiu rng cnh mng b Slab Depth: chiu dy bn mng b 3/ Gii bi ton


4/ Khai thc kt qu a. Xem chuyn v, ni lc ca phn t theo tng dy ca sn

Bi 6: Sn c (Sn caro) 1/ To m hnh hnh hc bi ton

Along X Direcion: cc kch thc theo phng X

Left Edge Distance: khong cch cnh pha bn tri Right Edge Distance: khong cch cnh pha bn phi Number of Spans: S nhp theo phng X Spacing: khong cch gia cc li

Along Y Direcion: cc kch thc theo phng X Top Edge Distance: khong cch cnh pha trn trc Y Bottom Edge Distance: khong cch cnh pha di trc Y Number of Spans: S nhp theo phng Y


Spacing: khong cch gia cc li Slab Thickness: chiu dy bn sn Column Size (square): din tch tit din ct Column Height Below: chiu cao ct di Dead load: Tnh ti phn b trn sn Live load: Hot ti phn b trn sn Drop panel: m ct sn (sn nm)

Size (square): din tch m ct Thickness: chiu dy m ct

Joist: dm chia caro cho sn

Depth: chiu cao dm Stem Width Top: b rng dm pha trn Stem Width Bottom: b rng dm pha di Spacing: khong cch gia cc dm


2/ Thay i c trng tit din ca sn c


3/ Gii bi ton


Bi 7: Sn chia thm h dm song song vi phng X hoc Y 1/ To m hnh hc bi ton


Joist: dm chia thm cho sn (Nu chn Y-Direction th s to dm song song vi trc Y v ngc li

Depth: chiu cao dm Stem Width Top: b rng dm pha trn Stem Width Bottom: b rng dm pha di Spacing: khong cch gia cc dm

Transverse Beam: dm nm ngang



2/ Thay i c trng tit din ca sn


3/ Gii bi ton


Bi 8: Mng n trn nn n hi 1/ To m hnh hnh hc bi ton


3/ Gii bi ton


Bi 9: Mng bng trn nn n hi (mng kp) 1/ To m hnh hnh hc bi ton


Footing Thickness: chiu dy mng Soil Modulus: Modul n hi ca t nn Load Size (square): din tch truyn ti Spacing: khong cch gia 2 ng li theo phng X v Y



3/ Gii bi ton


TNH TON CT THP TRONG SAFE THEO TIU CHUN M

Sau khi gii bi ton xong, vo , Chng trnh s t ng tnh ton v b tr ct thp cho tt c cc cu kin sn, dm, m ct tng ng


Kt qu b tr thp theo phng X ca dy gia sn

Compiler: Civil.Ngo Hoc Khiem YIM: [email protected] Kt qu b tr thp theo phng Y ca dy gia sn hin th bng s v xut bn v

Bn v b tr ct thp do SAFE xut ra (theo tiu chun ca USA)

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