竖向不规则结构的静力推覆分析
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摘要
在强烈地震作用下,结构的薄弱层往往率先发生弹塑性变形集中,甚至造成结构局部或整体倒塌。而静力弹塑性分析(Push-over)方法作为一种简单而有效的结构抗震能力评价工具,可以较为快捷地判明结构的薄弱部位,并用于指导结构的抗震设计。本文简要介绍了Push-over分析的实施步骤,并运用结构通用分析软件SAP2000对几种典型不规则形式的结构进行了分析,说明Push-over分析方法在探测结构薄弱部位方面的实用性。
Under strong earthquake,the weak story of a structure always leads to the centralization of elasto-plastic deformation and collapse.As a simple but effective tool for the assessment of structural seismic capacity,Push-over analysis may conveniently distinguish the weakness of structures,which play an important part in the seismic design.This paper presents a concise introduction to the Push-over analysis method and several irregular frames are studied by SAP2000 based on Push-over analysis.It is concluded that Push-over analysis can detect the weakness of structures effectively.
Under strong earthquake,the weak story of a structure always leads to the centralization of elasto-plastic deformation and collapse.As a simple but effective tool for the assessment of structural seismic capacity,Push-over analysis may conveniently distinguish the weakness of structures,which play an important part in the seismic design.This paper presents a concise introduction to the Push-over analysis method and several irregular frames are studied by SAP2000 based on Push-over analysis.It is concluded that Push-over analysis can detect the weakness of structures effectively.
引文
[1]杜培龙.竖向不规则结构弹塑性地震反应简化分析方法的研究[D].福建:华侨大学,2005.
[2]Chatpan Chintanapakdee and Anil K Chopra.SeismicResponse of Vertically Irregular Frames:Response Historyand Modal Pushover Analyses[J].Journal of StructuralEngineering(ASCE),2004,123(1):30~41.
[3]李森丹.SAP2000入门与工程上之应用[M].台湾:科技图书股份有限公司,2003.
[2]Chatpan Chintanapakdee and Anil K Chopra.SeismicResponse of Vertically Irregular Frames:Response Historyand Modal Pushover Analyses[J].Journal of StructuralEngineering(ASCE),2004,123(1):30~41.
[3]李森丹.SAP2000入门与工程上之应用[M].台湾:科技图书股份有限公司,2003.
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