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1、框支短肢剪力墻論文：框支短肢剪力墻結(jié)構(gòu)的靜力彈塑性分析【中文摘要】框支短肢剪力墻結(jié)構(gòu)體系自問世以來,以其諸多優(yōu)點(diǎn)獲得了人們的不斷肯定和推廣。由于這種結(jié)構(gòu)形式出現(xiàn)較晚,且受力特征明顯不同于框支剪力墻結(jié)構(gòu)和短肢剪力墻結(jié)構(gòu),對(duì)其理論研究尚不完善。近年來,針對(duì)此種結(jié)構(gòu)體系,國(guó)內(nèi)的學(xué)者進(jìn)行了一些理論分析和研究,但遺憾的是,絕大多數(shù)的分析和研究都是針對(duì)結(jié)構(gòu)在多遇地震作用下進(jìn)行的彈性計(jì)算分析。我們知道,結(jié)構(gòu)在罕遇地震作用下,部分結(jié)構(gòu)構(gòu)件將率先步入非線性工作狀態(tài),結(jié)構(gòu)整體剛度也將隨之發(fā)生改變,此階段下分析完全不同于彈性階段的分析。因此,對(duì)框支短肢剪力墻結(jié)構(gòu)在罕遇地震作用下的彈塑
2、性分析就顯得尤為重要。為了深入研究框支短肢剪力墻結(jié)構(gòu)在罕遇地震作用下的受力性能,為工程設(shè)計(jì)提供參考,本文借助有限元通用軟件SAP2000中Push-over法對(duì)框支短肢剪力墻結(jié)構(gòu)在不同水平側(cè)向力加載模式下進(jìn)行靜力彈塑性分析,對(duì)結(jié)構(gòu)的周期、塑性鉸出現(xiàn)順序及狀態(tài)、層間位移角、性能點(diǎn)等因素進(jìn)行分析,并結(jié)合能力譜法對(duì)結(jié)構(gòu)的抗震性能進(jìn)行評(píng)估,判斷結(jié)構(gòu)是否存在薄弱層。通過改變模型參數(shù),包括外筒剛度,核心筒剛度,框支柱剛度,轉(zhuǎn)換層剛度,對(duì)算例模型進(jìn)行對(duì)比分析,總結(jié)框支短肢剪力墻結(jié)構(gòu)在罕遇地震作用下的靜力彈塑性性能規(guī)律?！居⑽恼縎incetheframe-supported
3、short-legshearwallstructurecameout,theframe-supportedshort-legshearwallstructurewonpeople’sconstantlyaffirmationandpromotion,withitsmanyadvantages.Thisstructureformrelativelylate,anditsmechanicalcharacteristicsisclearlydifferentfromframe-supportedshearwallandshort-legshearwall,theore
4、ticalstudyisstillnotperfect.Inrecentyears,domesticscholarshavemadesometheoreticalstudiesonsuchastructuralsystem,butunfortunately,mostoftheanalysisonthestructureisinfrequentseismicaction.Asweknow,undertherareearthquake,theremaybesomeelementsfirsttoentertheplasticstage,thestiffnessisno
5、longermaintained,thecalculationofthisstageisverydifferentfromtheelasticstage.Therefore,Push-overanalysisonframe-supportedshearwallstructureunderrareearthquakeisparticularlyimportant.Inordertostudythebearingperformanceofframe-supportedshearwallstructureundertherareearthquake,providere
6、ferencetoengineeringdesign,theuniversalfiniteelementanalysisanddesignsoftwareSAP2000wasusedtocarrythroughPush-overanalysisonframed-supportedshort-legshearwall,undertwolevelsofloadingmode.Theperiod,displacement,sequenceofhingesandperformancepointareanalysed.Combiningthecapacityspectru
7、mmethod,evaluatestructuralseismicperformanceandweaklayer.Meanwhile,changestructureparameters,includingstiffnessofoutsidebox,stiffnessofthecorebox,stiffnessoftheframecolumns,stiffnessofthetransferfloorstructure,inordertogettheseismicperformanceruleofframe-supportedshort-legshearwallst
8、ructureunder
