sap ѧϰ
ֲϵ
صDzյλľֲϵġصӦõľֲϵ£
*ֲ 1 صλᣬֱڵλ沢ɹ̽Ľ㣻
*ֲ 23 ƽڽᣬƽ 2 ȡijߣ߶ȣƫ3 ȡĶ̱ߣȣƫǿ˹
sap2000 ʱ̷ıļ [] ҪʱݣڵšԻԼӿȡƫȵȣһŵһȻ SAP2k ͼһ´ڣôڵ File ˵Ϳָͼıд涨ļС
δ⣿ װͨĽ涨壬߶ȲϵĽ棬Թָֻ
Ȼ defineframe sectionsadd nonprismatic һ˵
Ŷһ±ƣstart section and end section øղŶͨ棬ֶαȾǺ length ʹԵҲԵ
ȫ̾
ָ˼ֱ 2-2,3-3
ĸնȵı,Ա,߱,߱;ǽ汾ı,汾ֻض˽浽ĩβԱ SAP2000 ô P-ЧӦ maximum iterationsֻ P-ЧӦĴһѡ 3еٶȿ죬ģͲҹҲѡҹ㡣
tolerance displacement P-λƾȣ
P-µλСڸֵֹͣ´ֻطʹδֻ maximum iterations趨ֵƽոѡijȵλλΪʱ0.0001 ϶ˡ
tolerance force ȣ
P-µСڸֵֹͣ´ֻطʹδֻ maximum iterations趨ֵƽոѡĵλ
sap2000 P-ЧӦ£һǴҹӦЧӦǴҹӦЧӦP-ЧӦʱԵλθնȷ̽ģDzϷԡ
SAP2000 ķԶ [] 1 SAP2000 NLLINK е DAMPER λж㣬 DAMPER λѧģΪF=CV**αα ΪٶָԱɷԶ⡣ǣҲȡ α С 1.0 ʱ,еǹʼҪô
2ȡĵλжʱնôûиնʱ
stiff 0ҹeffect stiff(damping)ֵô䡣
ǣûиնʱΪճ
stiff ҹeffect stiff(damping)ֵΪ 0
Concrete1. α Ϊٶɵָ1 ʱΪֱߣ>1 ʱ̣<1 ʱ䣬 Ӧ<1 ĸΪ
2. նȵ룺linear properties УEffective Stiffness Ӧ 0(ճ.Nonlinear Properties УStiffness Ӧ֧ŸնȣΪ 0,Ҳ˲쳣ҹȻdamping damping Exponent ʵʲȡѡҪ
zzt219631)ճ,Ӧѡη(ʱ̷ case )
2)õķԲʱ̷Ч,βЧ,ֻӰ
Ч
3)sap ȡ maxwell ļģ,Բοⷽ
4)ƽյĹڵضл,¥ٶȽС,V ָ a һӦС 1
ڷĸлһ 0.8 ,ݳҹʵ
5)a ȡֲСԵӰٶ,Ǽ㾫ȿƲ
6)ԲеĸնһҪȡ c 1000 ,һ㲻Ӽնȵı.
7)İƺҪ,ϵIJòϵܴҹ,Ҳоصƫ
sap2000 pushover η룿 concrete PUSHOVER ΪԷ
DAMPER Ϊ
HOOK Ϊֻܴ
GAP Ϊ϶ֻܴѹ
sap2k е diaphragm ? [] ¥ʩ diaphragm constraint(¥ģŸ¥壬¥ڽڵ֮ƽλƣconstraint axial ָ¥ֱĸᣬг̶¥ѡ z ᡣ
¥diaphragm Constraint)ٳ¥ڲΪһƽӪЧؽڲ㾭ɹƽ link һ·ӰƽıΡ
diaphragn constraint
1. ģ½еƽĸնȺܴҹ¥壻
2. ģϲ塣
⣬ڽУȡ Diaphragm Constraint ¥ƽڸնȺܴҹʱĤmembraneλģ¥ֵ⡣ڽ̶ȣ Diaphragm Constraint ҲЧΪԽصֵķ̸
diaphragm ģ¥ƽڸնҹ
diaphragm ƽڸڵλ sap2000 ԵĹ 1
ڷʱ̷Уƺֻ NLLINK ķԣλֻԡ
2
pushover жԽҲ˲ڷʱ̷pushover ʱ̷
zzt21963Ӧ˵ sap2000 ķԱʾõķԪ,һģеĸ˼ڵʱ,Է,ȻijִڷǵԽʱ,ҪòзԪ,ʱķųԷ.һƸܽʱ,ԪԪΪԪ,еʱ̷Ϊʱ̷.
sap2K ¥ʱ⡣
ʦΪ sap ֧֮估֮ӣǽ½ʱ hy...˵
1Уÿһ壬һΪͣΪ½ӣܲı߽½ӣֻĸǵ½ӣͼɹ̰彫صΪߺʱģʱϳֵIJߺأֻڰǴмкأҲû<˵Ť> OK ȷϣsap2000 Dz˲صģԣĸնȲлаްһġ
2罫ϸ֣С֮Ϊ½ӶʵһǸսӣʱһͲǰˣڻҹܶ ͷΪ,ǰնȱСܶ, ǽ½. Ϊĸ H ԶȰ h ҹ,ÿ̶ܹ,С. ĸնС,ȻDZ. ˮ̨Ĺϵ,ֻ, ̨.
sap2000 release,Ȼн½ӵ. ȡ ƽӦ+
ģ͵Ļ, ǹ̽ӵ.
㾮,ĵİ. Ҫ㹻(ǽӽİ),. ²Ӧƫתǵ.
tortional constant ʲô˼ tortional constant ӦŤתӦйأøDz ѧŤתԾءֻԲʱ tortional constant ֵŤתԾصֵ
shear area ΪҪüбӰλ룬ȡ
sap2000 ƽĵضûţô죿 ʸֵϲǶһ϶"ʸͬʸԣʸ-1 ҲǾȷʸҲ˵͡ضӦҲӦ͵Ӧһȷ⡣
3. Сҵľ飬ʹͬһڵ㣬λƷҹضӦӿͬ͡һ˼ҹضӦӿ͵ֵġͬһ˵ȻضӦŲ϶ӦֵͬŻǹ̶ġڲ͵Ӧ˵ӦĵضӦŲ϶ˡԣʹӦȡ˷ţ˲ԴΪڵ䡢˼ԸлĸݡϽڵ㡢ϸ˼ɿ϶ˡڵضӦвλӦӦͶضӦȴȡͬŵĻûл
4. +ضӦ -ضӦ ϡȻҪϣαӲҪӦֵǰϷأ
ǴҹڲȡضӦӷŵġ ansyssap2000 ȹضӦûзŵġܶȴ˷š
ҵ“õҿеijﻮ”DzӷţϼЩ͡Ϊ“ض”“”Ӧף߾Dzͬģ
WeibzsӦʱôأΪ ansys +x,-x ƫӦһ ͷֱ +Ӧ -Ӧ .
ضӦ, ضӦȷеĺ, ˲ѵضӦƵ"ض"лڹ. ضӦ +x ضӦ -x ضӦɹͬ,ǸӦϵijɹ, Dzϵ.
etabs ǽ¥ӦǸλ [] shell λΪƽӦλиնȡһģǽ plate λΪûƽӦλɶûκڸնΪ 0Ӧָֻ plate λڸնΪ 0ȫΪλװ¥иնȵģնȡλ
ģƽڸնҹ¥ʩ diaphragm constraint(¥ģŸ¥塣
־ͽһ¥شݵ [] KIRINxu“յ¥”“ֻظл”ã ֲߴͽ̣
stoneƽ趨һֲϣE Ϊ 1e-9ΪСshell ж bend membrane thick Ϊ 1mmȻ presureΪֻݺض빹칤 sap2k diaphragm ˵ [] Ҫָ¥Ļֻѡиòнڵ㣬 assign ->constraints->add diaphragm ָDIAPHRAGM ʱһѡ Z ΪΣע DIAPHRAGM ֱ Z ᣬ DIAPHRAGMֻڱΣƽΣɲο TBSA PKPM жԸ¥Ľͣ
SHELL ʱMEMBRANE ΪƽӦʱĺȣBENDING Ϊʱĺȣȿһ£ҲԲһ
Ը diaphragms(¥㣩ʩ diaphragm restraints(¥¥ڽڵ֮ƽλơ
ʸҹ飬ô뷴Ŵҹϵ [] ƵҶȡԶ𣬸ݿ淶롣ͼ
ƫ u1,u2,u3 ֱ 123 Ӧᡣ
sap2000 ƫϣscale ϵ
x ضu1 ȡǶߣӦ scale factor=1
y ضu2 ȡǶߣӦ scale factor=1
45 ƫضu1 ȡǶߣӦ scale factor=1 excitation angle ȡ 45 SAP2000 ԶķУValue ӦǼӿֵ˵¿淶У8 ȶ飬 0.1 ʱķӿ 0.16gӦ Value 1.568
ͷ sap2000 Ǽӿ-ڵsap2000 scale ϵϵġ
sap2000 ͬʱƫ߽scale3 ƫ z ƫscale1 scale2dz̶ƫϵ angle=0 ʱscale1 ƫ x ƫscale2 ƫ y ƫͼ
Ӧ s1*scale1 s2*scale2 s3*scale3 ϡ
...
..
pushover еԽ£ӭ۱ [] YangZeAn
ֽ plastic hinge rebar concrete ӦӦй,rebar ĺ concrete Ľߴй,Ҫǵ plastic hinge γɵʱ,Ҫܸܰplastic hinge гǨתεIJ.Կ RC member Ƿγ plastic hinge ƻģʽ,Ӧ plastic hinge ΧڵĿ,ܲ RC member Ǹplastic hinge .
һ RC ʵ,plastic hinge IJǿ,Ӧʹƻʱ,plastic hinge γ,γ,˹彨ǿƻγʱߵ.
Sap2000 Etabs V8 Static Pushover ,Ӧڹ,Ӧձ...Ƴµƹ淶,ƹ淶(Performance-Based Design Code).ù淶ǿ,ڲϵرӿȸл,淶Ӧܲ²,ǹ,Լ豸˺,ʹԷӲϳ̶ȵӦù.ƷӦ֮취ΪԼǵԷ취,зǵԷԷԶΪֱ֮취,乹̫ҼʱʵӦϲʵ,ԼķԾ.ԾнϾߴԵİ:
1.ATC-40 ֮Ƶ(Capacity spectrum method)
2.FEMA-273 ֮λϵ(Displacement coefficient method)
3.COLA 1995 (City of Los Angeles,Division 95)֮߰취(Secant Method)
취,ATC-40֮ƵFEMA-273֮λϵӦϱȽϹ㷺.CSI˾͙n, PUSHOVERPPT.ppt Etabd Sap2000 Ӧ Static Pushover ,ATC-40 FEMA-273 취,нΪ꾡Ľ Sap2000 Etabs pushover ʱ,йطȰڶµص֮,ϵԭ:
1.ڸֹʱ,µصDz FEMA-273 Tables 5.4 Tables 5.8
2. RC ʱ,µصDz ATC-40 Tables 9.6, 9.7 9.12 ETABS д¥شݵİ취 [] ETABS й area/shell λdeckplankslab wallǰ־ģ¥壬ֱֵλ˵˵λϸ(mesh)
1deck ģѹְ+¥壬˵λڽģʱļͷƫĴƫҪı䵥λƫĻԲȡı䵥λֲİ취ֵλؽϸּɻþȷĴ
2plank Ϊ membrane ʵİ壬˵λڵ壬Ϊ ETABS Խ membrane ʵİϸ֣ʽģʱضԴֵλ mesh
3slab Ϊ shell ͵İ壬ETABS λϸ֣Ϊþȷ¥شݣѡҪϸֵĿ꣬Ȼ Assign>shell/area>Area object mesh options Area object Auto Mesh Options ѡ Auto Mesh Object into Structural Elements > Further Subdivide Auto Mesh with Maximum Element Size of뵥λҹߴ(һɽĬֵ)
ͼΪһ鳤ΰ壬ıĽǼ֧Ϊ 2λҹߴΪ 48inchͼ£
һ¥ SLAB ʡPlank ֻ membrane λðĿն SAP2000 ETABS ȱʡ Frame λλ MeshûָmeshֻѡժҪ mesh slab ˡԴҸıͼп slab frame λıǵ͵ġ
ͽ Hook ÷ yifangau concrete ˵ hook ģ¸ֻѹж...
趨 nllink ˼Ҫô趨أ
1.total mass total weight ָô
mass=weight/g?
rotational intertia ָʲôأ
2.nonlinear Ƿ봰ѡ
3.effFective stiffness damping ָ裿 fem2000hook гʼ϶ֻλ϶ڵλƿԽʼ϶ijʱλĸնȿ˽빤л
ͬ Gep гʼ϶ֻѹλ()
Щλڷӵλģ½Ӵ⡣
һҪиնȡʼ϶еķȰ֮ĸЧᡣ
ݼͼ(ժ MIDAS/Gen ֲ) yifangaux fem2000 ֵČFҊ
sap2000 hook OЁK]гʼg϶O
ֻcҵOֵքeǣ
total mass/g
total weight.....UĿ
rotational intertia:DTԾ J ֵ
2.nonlinear ҕUǷǾ
3.effFective stiffness UŶ ET/L
dampingUS
concrete sap2000 hook Oгʼg϶Oѡ nonlinear ״
SAP2000 еλ۱ sap2000 hook λ νλʵϾλsap2000 пԲȡ frame/cable λʵʹ sap2000неλģʱҪ
1趨λòȡ⡣
2趨λѹЧģʽ
3 frame/cable λ˽ڵǨתȫͷŵ䣬Ծɹ release ʵ֡
ӦջЧӦָնӦӰһص㡣
SAP2000 ETABS ж¥Ĵ취 [] ӦһSAP2000 ETABS ʺܲϵںܶߵĴ취һ¥ĴҲһ
һ˵ ETABS ж¥Ĵ취
ETABS й area/shell λdeckplankslab wallǰ־ģ¥壬 deck ģѹְ+㣬plank ģµ壬 membrane ʵ slab ģ˫塣ֱֵλͣ
1deck ģѹְ+¥壬˵λ membrane ҵڽģʱļͷƫĴƫҪı¥崫ƫĻԲȡı䵥λֲİ취 local coordinate system 1 ƫ¥崫ƫ(ҲĻʾļͷƫ)Ϊ ETABS Խ membrane ʵİеλϸְ֣岻ؽ˹ϸּɻþȷĴ
2plank ģµ壬˵λ membrane ҵ deck ڽģʱļͷƫĴƫ䴫ƫİ취Ҳ deckơͬΪ ETABSԽ membraneʵİеλϸְ֣Ҳؽ˹ϸ֡
3slab ôȽϹ㷺ģ¥ʱ趨 membrane ʵ sectionֵλ˫شǰհԽ߽лֵģģ˫塣ETABS ¥ϸֵλԲؽ˹ϸ֡
4plate shell ͵ slabETABS 岻˲ϸ֣Ϊþȷ¥شݣѡҪϸֵİ壬ѡ Assign>shell/area>Area object mesh options Area object Auto Mesh Options ѡ Auto Mesh Object into Structural Elements > Further Subdivide Auto Mesh with Maximum Element Size of뵥λҹߴ(һɽĬֵ)
λһ(ǽ)е¥塢ǽ(wall)ͳ(ramp)
Ҫ͵ǣ
1 slab/wall/ramp ǷҪֹϸ֣ӵ frame λؽֹϸ֣ETABS ¡
2 1-3 壬شݲɹԪʵ֣Ǹ۳ɹֱӽϺصܱȥġһڲ鿴ܱʱһ鿴ϵķֲȷ(ֲǾ) 4 /ǽɹԪкشݵģ鿴ϺӦǶкء
3 1-3 òҪֹϸ֣Ȼпɺ
4ڵ 3 壬ETABS ܱߺĽǵ֧϶ԽߣԴ֧һɡߺͶԽǵ֧еȵȱȽϸӵ
5Ϊ ETABS Խ membrane ʵİ֮ʱڹطһ㲻¥ƽնȣڳ̶Ⱥطʱһ¥Ϊ¥Ϊ̶(ƾ PKPM ᵽĵ¥壬õڸնг̶Ⱥط)ʵİʵý membrane ʵİģ¡ ETABS УҪø¥壬
ָ rigid disphragm Ӧ壬ʱ硢ض̶֮ȺؿֱָĶؽر粻ø¥壬ؿԾɹָǽǽ wind pressure coefficient м(߶ݵλ Z )ضؿԾɹ̷á
6б¥ƽ⣨ն(ǽе¥)ɲȡshell ͣͬʱ߱ membrane plate ʣİ壬ϵ 4 λм㡣
ǰIJͼ SAP2000 еλ۱ sap2000 hook λ νλʵϾλsap2000 пԲȡ frame/cable λʵʹ sap2000неλģʱҪ
1趨λòȡ⡣
2趨λѹЧģʽ
3 frame/cable λ˽ڵǨתȫͷŵ䣬Ծɹ release ʵ֡
ӦջЧӦָնӦӰһص㡣
SAP2000 ETABS ж¥Ĵ취 [] ӦһSAP2000 ETABS ʺܲϵںܶߵĴ취һ¥ĴҲһ
һ˵ ETABS ж¥Ĵ취
ETABS й area/shell λdeckplankslab wallǰ־ģ¥壬 deck ģѹְ+㣬plank ģµ壬 membrane ʵ slab ģ˫塣ֱֵλͣ
1deck ģѹְ+¥壬˵λ membrane ҵڽģʱļͷƫĴƫҪı¥崫ƫĻԲȡı䵥λֲİ취 local coordinate system 1 ƫ¥崫ƫ(ҲĻʾļͷƫ)Ϊ ETABS Խ membrane ʵİеλϸְ֣岻ؽ˹ϸּɻþȷĴ
2plank ģµ壬˵λ membrane ҵ deck ڽģʱļͷƫĴƫ䴫ƫİ취Ҳ deckơͬΪ ETABSԽ membraneʵİеλϸְ֣Ҳؽ˹ϸ֡
3slab ôȽϹ㷺ģ¥ʱ趨 membrane ʵ sectionֵλ˫شǰհԽ߽лֵģģ˫塣ETABS ¥ϸֵλԲؽ˹ϸ֡
4plate shell ͵ slabETABS 岻˲ϸ֣Ϊþȷ¥شݣѡҪϸֵİ壬ѡ Assign>shell/area>Area object mesh options Area object Auto Mesh Options ѡ Auto Mesh Object into Structural Elements > Further Subdivide Auto Mesh with Maximum Element Size of뵥λҹߴ(һɽĬֵ)
λһ(ǽ)е¥塢ǽ(wall)ͳ(ramp)
Ҫ͵ǣ
1 slab/wall/ramp ǷҪֹϸ֣ӵ frame λؽֹϸ֣ETABS ¡
2 1-3 壬شݲɹԪʵ֣Ǹ۳ɹֱӽϺصܱȥġһڲ鿴ܱʱһ鿴ϵķֲȷ(ֲǾ) 4 /ǽɹԪкشݵģ鿴ϺӦǶкء
3 1-3 òҪֹϸ֣Ȼпɺ
4ڵ 3 壬ETABS ܱߺĽǵ֧϶ԽߣԴ֧һɡߺͶԽǵ֧еȵȱȽϸӵ
5Ϊ ETABS Խ membrane ʵİ֮ʱڹطһ㲻¥ƽնȣڳ̶Ⱥطʱһ¥Ϊ¥Ϊ̶(ƾ PKPM ᵽĵ¥壬õڸնг̶Ⱥط)ʵİʵý membrane ʵİģ¡ ETABS УҪø¥壬ָ rigid disphragm Ӧ壬ʱ硢ض̶֮ȺؿֱָĶؽر粻ø¥壬ؿԾɹָǽǽ wind pressure coefficient м(߶ݵλ Z )ضؿԾɹ̷á
6б¥ƽ⣨ն(ǽе¥)ɲȡshell ͣͬʱ߱ membrane plate ʣİ壬ϵ 4 λм㡣
SAP2000 ¥Ĵ취
SAP2000 λһȽͨõĸӹ ETABS ڽרƣԲ۶κ͵ shell ûнرֻܾɹֹϸֵλʵĴݡ ETABS һµDzҪܱߵֹϸ֣ǽ(wall)Ҫ¥һֹͬϸֲܰ¥λƵ͡
˭ sap2000 е pushover о
[] jason21801⣬ÿξĹնȡ
2Լӵĺس̶ȣƵλֵ
3ԹҪ frameǽЩࡣ
4M2/M3 ʵȡĹʣ豸ֹĺ-߲ϡ
пտԿ FEMA273,274.
5, ķԲ M2/M3, мΣP-M2-M3 ɱεȡ
6PUSH-OVER FRAME ļηԡ
Pipisasa1ۺ˼ηԺͲϷԣϷǾɹ̶·ԵλߣԼӦߺŤתߣηǾɹ̶嵥λõġ
2ʱض PUSHOVERпǵ PUSHOVER
Pipisasaᵽģɹ̶岻µĶɣӦֶ߶ķԲϵĵλնȾγɲǸͨλ EGIxxIyyJA 㣬Ǹ——ʡ——Ӧ䡢Ť——ת㡣
ijʱ 2000kN л¿Ѻնȵļ㣬Ǹ 2000kN µĵ㣬Ѿ˿ѺնȵӰ죬ĹؼӦλЩߡЩߵļǾɹ·ģԺһ̸⡣
PUSHOVER ʵΪضӦоݣ䱾ԹԲûжҹ塣————j.
Kelbλʦ,()ԻԹļһùļη,ɷȡ sap2k е pushover ?β? iflyto2002pushover 취ܹijһ˼븺նȺø˼ܵĺж˼ڸն״£ѲʵãλնȾ˲ٲȡն״µĵλնȾֻܾɹ̸˶˵λλƣ㣬˶İ취á˼븺նȺڲӺص£˼ͻΣжء˼жغĸ˶ǰõĸ˶ֵΪƫӵ˶˽㲢һ Push-over ʵʩ취вϣҹͬ
1Ĺģͣγߴ硢Լ˸˶˶תǣ ֮Ĺϵߡ
2ڹʩӺij̶Ⱥģʽ
3ѡư취һݿƣֱ㹻Խ²γɻֹͣλƿơ
4Ƶڿѻӵĸ˼նȽĺһأʹһһ˼ѻӣһֱ̣ﵽĿλƻƻ
5ΪؼһǸݼɹԼģͽпܵ
ǶڷǶԳƿܣӦڹƫֱ Push-over ȡнΪΪƸ
pushover ԣPushover
ԣ pushoverһǿĹܣ ETABS 汾СΪڿƻ Pushover ⣬˹ܻйԷͷֶʽķ
κηԽѺܶʱԡоԷǰϸȫϢҪرеҪ
Էпüص㡣
ڿ/ߵλвûµIJϷԡκοܵλָκελϣݼ߶ĿܷԽָءŤءͼЧġҲиݽµλϵĽлӵ P-M2-M3 ¡ͬĵλɴڶһֵĽ͡磬ָһ M3أһ V2µܵλͬ˲ĬϽǻ ATC-40 FEMA-273 ġ
ӵλвϵķԡ
ЧصκɽǶȵѷ죨ѹhookԣԼָͣ˫Ժ˫ĥ/ڶݼ߶
ָھԷûЧӦ
еλеļηԡѡ P- ЧӦ P- ЧӦϴҹλƣݼηЧӦҹλЧӦñ豸ľ⣬ڴҹƽƺŤתȻÿλеӦ䱻豣ΪСֵ
ֶΣʩÿУɰʩӻɾݼԷֶʩ
ԷκĹɡÿԹڹпвϵĺطֲ磺䷶ԷֹɡһΪӦأΪڹĸ߶Ӧһطֲֽڹ߶Ӧһطֲ
Թɴʼ״ˣһĩijɹˡǰһУʼ״ˣɴĩˡ
ÿɶʩιɡ磺ڹʩб
Էȫ ETABS ķ͡ǣκΪԺͶ̬еijʼ P-Δ ھԷûӰ졣ֻģ̬νлھԹںء
ԷɱơƽհԺͷԳɹû壬ԿԱƵľԹӦеĺءǡıǿΪƼϡ
ӦڸľԹϵĺطֲΪеһijɱϣ
һع
ȫƫһƫϵȼӿȸлÿڵڴ˽ڵdzɱģָƫϲл
κصģ̬һģ̬ءÿڵģ̬λơģ̬ٶȵƽw2Լ˽ڵij˻ɱģ̬λƫϸл
ÿﻮĺģǿǰһԹǶѾڹϸлĺصĶֲ
ڵһµķֶʩʱʱָĺӦõÿΡڷֶʩʱһλɾɾȫ˵λЯĺأǰĺأ
ؿ
ӦúԲϵĿơÿӦһϵĺؿ͡ѡƽոݺص빹Ԥڻܣ
ơӦȫָĺϡ֪أأԤڹԻ֧д˺ʱӦӦơֶʩҪơ
λƿơбصĵһλƷɶλƣDZƵġҪԺϵֱλƴﵽֵָΪֹҵָλƣ翹أʱ˴ӦõĺDz֪ģԤڵȥǿȻɲʱӦӦλƿơλƿƲ˲ڷֶʩ
ɹ
ӾԷпɻüͣ
صλƿԱͼ
Pushover ÿĻ vs صλֵͬԽǿλijЩƵĽĻϲ鿴ӡΪļ
vs صλƿɰ ADRS ֳͼ˴ֱӿȣ̶λơҪڳͼϱص
ףADRS ߣЧЧֵƳɱĻнв鿴ӡΪļ
·еĴÿµɫ״ɰͼηв鿴ԭԹɰ
С
ӦҲͼλв鿴ԭԹɰС
ѡĹͽ³ɹдΪӱֵļڵݱȰд
ѡĹͽ³ɹд뵽 Access ݿֵļС
й漰оԷ
һκһģ͡⣺ȻλͿʾģУܺӵλΪϷԡ
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κӦþԹƼ顣
ҪģͲС
Ҫ
зԷҪʱͷÿⶼһҪضʱѧÿѰ취
ӼˣȷģͻԺģ̬ضԤΪҹӽ£Ҳض˾͵Ӧý¡ӦòǿȵĽģͿˣڽĽģͻƹ졣
ûзԼεijʼ PΔ ЧӦպпܵ´ҹƻʶĿλƺƵIJˡڿʱĿӦǿзԱɻýģ顣ɹ̽ģʵɸһؽޣõ˵ķ״
ѧϣԷǰжһĽﻮ̬ĹЧӦʵ繹·ơⲻʵľΪϻηɵȥǿȵIJȶ¡
СΧıԻؿɵڷԷдҹΧĸı䡣Ϊԭúܶϵĺع൱ҪģҿڹԱжȽо
Թ
ԻԹ
ݷþԹݶԻӦö˵>/Pushover ¹/ʾ¹ť
ԹݶԻ:
ѡ
Ŀƾɹ̹ѡǡĸѡѡ͡ƵƵλ:
תģʽĺس̶ȡѡתģʽĺس̶ȡѡһƷ÷Ӧֵֵɹܼڡߡָкض(һϵ͵ֵ)ѡӦõЧġ
⣺
ڴ˹Ľ֮Ч飬˹һǰĹ˲Ч֮ʱѡ롿ڽ()ʩء
תλ.ֵѡתλƷֵѡԽһλƣƷڶԻߡָĺϱӦãȻķֵҪԱֿλڷֵӦúص죬߶Ȳ֪ӦúطֵκιԤڹ콫ǿȻɲʱѡЧġ
ĿλƷֵ(Ӧת Disp λơѡı༭еֵ)ԼҪӦáλơΪ(Ƽ)ѡøѡ粻ѡ˿λơڿơ
Ӧùλڿ
λһΪӦõĺģʽϹĹλȡǹλɶȵһȨܺ:ÿλƷǸɶȵӦúأܼƳɹ
λƽһָ£ԹλƵIJһƽƼûӦùλƣûܱһڷʱĹλơ
ûӦùλƿƷʱ̣ͼﵽָļλơȻƽֻ֪ĿλƣرǼ硾λơڹλƵһƫϡ
ɹѡλɶȡǩѡ¥ɶ塾λơλơڻ pushover ԼӦáתλƷֵѡʱ
λơһԷʱijһʱһһλƷpushover ʱȰӦüλΪ̶ᡣλҲھʱֹͣһܿλƵķ
ɶȺͼλ ETABS ĬֵûصЩĬֵĬֵλڹ춥һ㡣Ĭϼɶ UX; ЧƫΪ UY, UZ, RX, RY, Լ RZ.
pushover ߣҪûӦѡһӦúģʽеļλơ磬Ӧƫ UY ϵʱ̣ûƽղøüɶ UXͬûüӽĽڵ㡣
ΪλƿƵĿѡһλʱҲͬáѡһӦúеλƣҼܣڷʱġ
ûӦüλƻλΪλƿƣӦüλƵķֵʱֹͣһܿλƵķ
ûӦùλƿƷʱ̣ͼﵽָļλơȻƽֻ֪ĿλƣرǼ硾λơڹλƵһƫϡ
λơﵽָλƷֵʱֹͣ(һȽϵ͵λֵ)
λơĿλƷֵ ETABS һΪ 0.04 ĬֵԹ춥 Z ꡣ繹Ļһҹ Z ꣬ĬϵλƿʱҹҪûɸֵֻӦáλƷֵľֵ:صƫָĺģʽ
⣺ڴ˹Ľ֮Ч飬˹һǰĹ˲Ч֮ʱѡڽ()ʩء
ǰιΪҪһǰָľԹֹͣǰῪ˵ǰĹӡǰһˡбѡǰһơƽմѡһԹָӦһ̬Թֹͣˡ
ֻֻ뱣 pushover ߵλѡֻѡ˴ԻøϢ
pushover ߵ䷶ֻ͡ѡĸлУʵ߱ʾѡֻѡ(Ĭϵ)ʱ pushover ߣԼ߱ʾѡֻ
ѡʱ pushover ߡһͼչʾжذ취趨ɡжȫ졿ʱ pushover ߣڶͼչʾѡ趨ɡӦ Secant ȴ¿ˡʱpushover ߡ
еķƲҪǡҹϣҹֵñȽСƿˣûɹûģͻþʱ
С沽
С沽һԹкصҹ沽ETABS ɶӦӦӦͼϵˣҪԼЧӦIJЩijɹֻеǶӦpushover беһԱʱű档
ûӦáС沽ǿȷȰ渽ӵIJԴҹĹԣһ5 20 ֵ֮ǡģȻûԤ˺ܶʱһֵ 1 ƽѵġ硾жذ취趨ɡӦ Secant ȴ¿ˡҲƽƼһֵ 1
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