基于动力弹塑性分析的大跨度场馆优化设计
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(广东省建筑设计研究院,广州 510010)[摘要]基于动力弹塑性分析,介绍了三个大跨度场馆的大震下安全度评价和优化设计,通过对核心筒和钢构件截面的优化,形成合理的结构破坏模式,达到节省钢材并减少剪力墙和主要受力构件在大震下塑性屈服的目的。大震下动力弹塑性分析不仅为第二阶段设计提供了验算手段,同时也为第一阶段结构设计优化提供了依据。[关键词]动力弹塑性分析;大跨度场馆;破坏模式;优化设计Structural optimal design of large-span gymnasiums based on elastic-plastic dynamic analysisChen Xing,Ou Tong, Li Songbai, Ding Xirong, Jiao Ke(The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China)Abstract:Based on the elastic-plastic dynamic analysis, the evaluation of the safty degree under strong earthquake and the optimization of the structural scheme of three large-span gymnasiums are introduced. The optimization of core tube and the cross-section of steel members is advantaged to form the rational failure mode, save steel and reduce the shear wall and the main component plastic yield under strong earthquake. The elastic-plastic dynamic analysis under strong earthquake not only provides a means of checking for the second phase of design,but also plays the role of providing the reliable data for structural optimization.Keywords: elastic-plastic dynamic analysis; large-span gymnasiums; failure mode; optimal design作者简介:陈星,教授级高级工程师,Email:chenxingsy@163.com。参考文献[1]GB50011—2008建筑抗震设计规范[S].北京:中国建筑工业出版社,2008.[2]焦柯, 赖鸿立,等.动力弹塑性分析软件GSEPA在高层结构中的应用[C]∥第二十届全国高层建筑结构学术交流会论文集,2008.[3]傅学怡,杨想兵,等.济南奥体中心体育场馆结构设计[C]∥第二十届全国高层建筑结构学术交流会论文集,2008.