(同济大学建筑设计研究院，上海 200092)

［摘要］以北京奥运会乒乓球馆钢屋盖这一预应力张拉结构体系为背景，首先介绍了静、动力弹塑性分析的基本理论与分析方法，重点采用ANSYS软件对这一结构体系进行了静力弹塑性全过程分析以及弹塑性时程分析，并对结构塑性发展机制、力学性能以及抗震性能进行了详细的研究，研究结果表明屋盖结构具有良好的整体工作性能。

［关键词］预应力张拉结构；弹塑性；极限承载力；抗震性能

Static and Dynamic Elasto-plastic Analysis of Steel Roof of Beijing Olympic Ping-pong Gymnasium

Ding Jiemin,Kang Xiaoju,He Zhijun(Architecture Design and Research Institute of Tongji University,Shanghai 200092,China)

Abstract:Based on steel structure roof of Beijing Olympic Ping-pong Gymnasium, the basic theory and method of the static and dynamic elasto-plastic analysis are first introduced. Software ANSYS is applied to perform the static elasto-plastic analysis and elasto-plastic time-history analysis. And the plasticity development,the force performance,the seismic performance of the structure are studied. The study revealed that this roof structure has well whole working performance. The results are given to be used as reference for the design of this kind of structures.

Keywords:pre-stressed string structure; elasto-plastic; ultimate bearing capacity; seismic performance

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