考虑几何和材料非线性时网壳结构的地震反应

英文篇名：Seismic response of reticulated domes considering geometric and material nonlinearity
中文刊名：河南理工大学学报(自然科学版)
英文刊名：Journal of Henan Polytechnic University(Natural Science)
作者：闫安志 ; 陈波
英文作者：YAN An-zhi1 ; CHEN Bo2 (Institute of Civil Engineering ; Henan Polytechnic University ; Jiaozuo 454003 ; Henan ; China ; 2.Institute of Geophysics ; Chinese Seismdoyical Bureau ; Beijing 100081 ; China)
中文关键词：非线性 ; 地震反应 ; 网壳结构 ; ANSYS ; 时程分析
英文关键词：nonlinear ; seismic response ; reticulated domes ; ANSYS ; time-history analysis
出版日期：2009-10-15
机构：河南理工大学土木工程学院;中国地震局地球物理研究所;
年：2009
期：05
出版单位：河南理工大学学报(自然科学版)

摘要

通过对网壳结构进入非线性后的抗震性能研究,不但对现有结构可能发生的破坏加深认识,而且也为未来结构抗震设计打下基础.以K8型大跨度单层网壳结构为例,考虑结构几何和材料非线性因素,用大型ANSYS有限元软件,对其进行非线性地震时程分析.对比结构线性和非线性情况下的动力响应,并分析了地震动持时和竖向地震荷载对结构强度的影响.由网壳结构屈曲形态显示结构的薄弱区域,为工程结构加固和抗震设计提供参考.
The study on the anti-seismic performance of reticulated shells not only redounds to deeply understanding the possible structural damages,but also provides a base for further mechanism study and practical design.The nonlinear seismic response of the representative K8 reticulated domes with great span is calculated by finite element software ANSYS,and the geometric and material nonlinearity are all considered in this paper.The effects of response between the structure of the linear and nonlinear are compared under horizontal and vertical duration earthquake respectively.The weakness area is obvious found from the response curve,which provides the reference of seismic design of engineering structures.

引文

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