欢迎来到天天文库
浏览记录
ID:32476849
大小:289.08 KB
页数:6页
时间:2019-02-07
《配筋混凝土砌块砌体剪力墙结构基于位移的抗震设计方法》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2005年全国砌体结构基本理论与工程应用学术会议论文集配筋混凝土砌块砌体剪力墙结构基于位移的抗震设计方法梁兴文,李晓文,邓明科(西安建筑科技大学,西安710055)摘要:根据配筋混凝土砌块砌体剪力墙结构的特点,将其性能划分为使用良好、保证人身安全和防止倒塌三个水平,并用层间位移角限值予以量化。用作用倒三角形水平分布荷载的等截面弩曲悬臂杆的侧移曲线作为其初始侧移模式。对于使用良好性能水平,将剪力墙结构体系顶层的层间位移角刚好达到相应限值时的侧移曲线作为目标侧移曲线,据此计算等效单自由度体系的等效参数以及原结构的基底剪力
2、和各质点的水平地震作用。对于保证人身安全和防止倒塌的性能水平,根据Pushover曲线与需求曲线的关系予以调整,使结构满足这两个性能水平的要求。本文方法简单实用,设计结果可靠。关键词:配筋剪力墙结构;基于位移的抗震设计:性能水平;等效参数ResearchonDiaplacement—basedSeismicDesignMethodofReinforcedBlockMasonryShearWallStructuresLIANGXingwen,LIXiaowen,DENGMingke(xi’allUniversityof
3、ArchitectureandTechnology,Xi’all710055)Abstract:AccordingtOthecharacteristicofreinforcedblockmasonryshearwallSllalCtUreS,theseismicperformancelevelisdividedintothreelevels.whichareserviceability,life-safety,andcollapseprotectioninthispaper.Thethreelevelsalequal
4、ified谢tllstoreydriftangles.ApplyingtheinvertedtriangulardistributionoflateralforcetOthecantileverwallwimidenticalsection.thedisplacedshapeisregardedastheinitiallateraldisplacementmodeoftheshearwallstructure.Intheserviceabilitype-rformancelevel,thecurvatureatthe
5、bottomcrosssectionofthefirststoreyoftheshearwallstructurereachesyieldcurvatureisassumed.Andinthecollapseprotectionperformancelevel,thecurvatureatthesamecrosssectionoftheshearwallSll'ucturereachesultimatecurvatureisassumed.Then,thetargetdisplacementmodesofthetwo
6、performancelevelscallbeobtained.BasedOnthetargetdisplacementmodeofthereinforcedblockmasonryshearwallSRqlCtureintheserviceabilityperformancelevel,theeffectiveparametercallbeobtained.Thus,thebaseshear%andhorizontalearthquakeforceEateachfloorofthebuildingCallbedet
7、ermined.Combiningthehorizontalearthquakeactioneffectwithcorrespondinggravityloadeffect,thedesigninternalforcesoftheshearwallcriticalsectionsareobtained.thenthestructuralmembersCanbedesignedtosatisfystrengthdemandanddetailsofseismicdesign.Finally,thedesignedstru
8、ctureisanalyzed、聃血nonlinearstaticanalysismethodandthedesignisadjustedbythepushoveranalysisresultuntilitissatisfied.Keywords:blockmasonryshearwallSlXUCtUre;displacement-based
此文档下载收益归作者所有