（北京市建筑设计研究院， 北京 100045）

［摘要］广州新客站无站台柱雨棚为复杂大跨度预应力索拱空间钢结构。采用有限元软件MIDAS/Gen对包含下部桥梁结构和上部钢结构的整体模型进行了罕遇地震作用下三向地震波输入的弹塑性时程分析，研究了结构的位移、应力、内力等动力反应，考察了屋顶钢结构的弹塑性发展历程。分析结果表明，无站台柱雨棚钢结构在罕遇地震作用下进入塑性的程度很小，未发生大的变形，具有良好的抗震性能。

［关键词］广州新客站;复杂大跨度空间结构;弹塑性时程分析;抗震性能

Elasto-plastic time-history analysis on non-platform-column canopy of New Guangzhou Railway Station

Xu Fujiang, Zhen Wei, Zhao Ming, Liu Jialing(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The roof structure of non-platform-column canopy of New Guangzhou Railway Station is a complex large-span space structure. With FEM analysis program MIDAS/Gen, elasto-plastic time-history analysis of the integral structures subjected to three-dimensional rare earthquakes is conducted, and dynamic responses of the displacement, stress and force are studied, and the progress of elasto-plastic development is researched. The results show that the plastic degree of non-platform-column structure under rare earthquake is very low and the deformation is small, and the seismic performance is good.

Keywords:New Guangzhou Railway Station; large-span space structure; elasto-plastic time-history analysis; seismic performance

作者简介：徐福江，博士，高级工程师，Email：xufj@biad.com.cn。

参考文献

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［2］甄伟，冯健，盛平，等. 广州新客站雨棚钢结构设计及索拱实验［J］. 建筑结构,2009，39（12）.

［3］MIDAS技术手册［Ｍ］.

［4］GB50011—2001建筑抗震设计规范（2008年版）［S］.北京：中国建筑工业出版社，2008.