Pushover分析方法中各种不同的侧向荷载分布方式的影响

23320079WORLDEARTHQUAKEENGINEERINGVo.l23,No.3Sep.,2007:2007-03-18;:2007-07-21:(1977-),,,.:1007-6069(2007)03-0120-09Pushover侯爱波1汪梦甫2周锡元1(1.,100022;2.,410082):,pushoverpushover,,,,:pushover;;;:TU311.3:ATheeffectofmanydifferentlateralloadpatternsinthepushoveranalysisHOUA-ibo1WANGMeng-fu2ZHOUX-iyuan1(1.TheCollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100022,China;2.Dept.ofCivilEngineering,HunanUniversity,Changsha410082,China)Abstract:Theresearchoftheperformance-basedseismicdesignisnowintheascendan,tandthepushoveranalysisasonemainanalyticalmethodoftheperformance-basedseismicdesignhasbeenstudiedextensively.Thelateralloadpatternisonekeyproblemofthepushoveranalysis,sotheanalysisandcomparisonofmanydifferentlateralloadpatternsarenecessary.Inthispaper,manydifferentlateralloadpatternsderivedbyformerscholarsaresum-marized,andatthesametime,onenewinstantaneousadaptivelateralloadpatternisdeveloped.Finally,theap-pliedscope,thevalidityandtheeffectofmanydifferentlateralloadpatternsusedinthestructuralplasticanalysisarecomparedthroughtheanalysisoftwoexamples.Keywords:pushoveranalysismethod;performance-baseddesign;thelateralloadpattern;thestructuralseismicdesign1,pushover,pushover,pushover,,,,,2pushover,[1~4],,:2.1,,,(1)(2)(3)[4]Fi=wkhkiEnj=1wjhkjVb;k=1.0(t0.5s)1.0+T-0.52.5-0.5(0.5sFt2.5s)2(tE2.5s)(1):Fi)i;Vb);wi)i;n);hi)i;T)(4)Fi=WihiEni=1WihiVb(1-Dn)(2)$Fn=DnVb(3)(2)(3):Dn))),;$Fn)));(1)(5),,,,,Fij=AjCjXijWi(4)Qij=Enm=1Fmj(5)Qi=Enj=1Q2ij(6)Pi=Qi-Qi+1(7):Aij,;Xijji;Cjj;N(2~3,1.5s5,);n,Wii2.2,,,,,(1)[2],:1213:Pushover,,,,(4)(5)(6)(7)(2),,,[5]:,,pushover,,,,,:,;,,,,;,,,,,3Level1;pushoverLevel2Level27,Modal1,Modal2,Modal3,Modal4,Modal5,Modal6,Modal7Level2,Level1,pushover,3.1(1)2080,))[6],[6](2),Level1TaftLevel1,Level2Level1Taft11(a)1(b)122232Level2Modal12(a)2(b)3Level2Modal23(a)3(b)4Level2Modal34(a)4(b)5Level2Modal45(a)5(b)1233:Pushover6Level2Modal56(a)6(b)7Level2Modal67(a)7(b)8Level2Modal78(a)8(b),,,Modal3Modal4Modal6Modal7,,,,,,3.2(1)[7]15,),[7](2),,Level1TaftLevel112423,Level2Level1Taft,99(a)9(b)10Level2Modal110(a)10(b)11Level2Modal211(a)11(b)12Level2Modal31253:Pushover12(a)12(b)13Level2Modal413(a)13(b)14Level2Modal514(a)14(b)15Level2Modal61262315(a)15(b)16Level2Modal716(a)16(b),,Modal2Modal3Modal7,Modal1Modal5Modal6,,,4,:(1),,,,;,,(2)pushoverModal1Modal3Modal4,Modal6Modal7;,Modal3Modal6Modal7,Modal1Modal41273:Pushover:[1]GuptaB,KunnathSK.Adaptivespectra-basedpushoverprocedureforseismicevaluationofstructures[J].EarthquakeSpectra,2000,16(2):367-391.[2],,,.(Push-over)[J].,2000,21(1):44-50.[3],.[J].,2000,17(5):8-13.[4]FaellaG.EvaluationoftheR/Cstructuresseismicresponsebymeansofnonlinearstaticpush-overanalysis[A].Proc.11thWorldCon.fEarthq.Engng.[C],Mexico,1996.[5].[D].:,1994.[6]KabeyaswaT,ShioaraH,OtaniS.Discussionondynamicresponsesystem[A].U.S.JapancooperativeresearchonR/Cful-lscalebuildingtest-part5.Proc.8thWCEE[C],Tokyo,1984.[7].-[D].:,2003.12823