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中文摘要：
世博会国家电网企业馆采用四边形空间刚架结构,本文分析了该结构的静动力特性.在线性稳定性分析的基础上,通过非线性稳定性计算分析了结构的极限承载能力.温度作用对单独钢结构的影响较大,采用整体结构模型后温度效应降低.人行天桥采用了张弦梁结构,本文给出了其设计过程,确定了预应力模态与预应力分布.根据施工方案对结构进行了施工模拟全过程分析,得到各状态的变形与内力.基于施工单位提出的卸载方案,模拟了卸载过程,得到了卸载点的变形与反力,并校核了卸载过程中的杆件强度.
英文摘要：
States Grid Exhibition building of Expo 2010 adopts a structural system as polygon spatial rigid frames.Static and dynamic performances of the structure are presented in the paper.Linear bulking and nonlinear stability analysis are also shown in the present paper.Temperature effect on the structure decreases if the integral model is adopted.The pedestrian bridge adopts beam string structure.Design processes such as the identification of self-stress mode and prestress distribution are described.According to the construction scheme,construction simulation analysis is presented in the paper.Deformation and internal force of members during the construction process are listed.Then unloading animation is conducted on the basis of unloading plan proposed by construction group.The strength of members during the process,deformations and reaction forces of the unloading points are checked in the paper.
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