赵长军¹，  范  重¹，  彭  翼¹，  尉胜伟²，  罗兴隆³
    （1 中国建筑设计研究院，北京100044；2 中铁十二局，太原030024；3 上海宝冶建设有限公司，上海200941）

[摘要] 苏州火车站钢结构屋盖为大跨度屋盖结构，屋盖为双向布置的空间菱形桁架结构。根据站房的分期建设需要，对结构通过单元逐步激活技术进行了阶段施工模拟分析。根据屋盖钢结构的安装方案，对结构进行了现场实时卸载模拟分析，分析中同时考虑了施工期间各榀空间桁架的安装温度和合拢温度对结构挠度及杆件应力的影响。挠度实测值与理论计算值符合较好，为钢结构屋盖卸载提供了科学依据。
[关键词] 大跨度结构；分期施工；安装方案；施工模拟；温度影响
中图分类号：TU756.4 +3    文献标识码：A    文章编号：1002-848X( 2011) Sl-0794-05

Construction simulation analysis on large span roof structure of Suzhou Railway Station
Zhao Changjun¹,  Fan Zhong¹, Peng Yi¹,  Yu Shengwei²,  Luo Xinglong³
(1 China Architecture Design and Research Group, Beijing 100044, China; 2 China Railway 12'h Bureau Group Co., Ltd., Taiyuan 030024, China; 3 Shanghai Baoye Metallurgical Construction Co., Ltd., Shanghai 200941, China)

Abstract: The steel roof structure of suzhou railway station is a large span structure and the structure is comprised of spatial thombic cross-coupling truss. Construction simulation analysis was done on the structure according to the needs of constructing by stages. Uninstall simulation analysis was done according to the install case on the spot and the temperature influence on the structure flexivity and stress was taken into account. The measured value and the theory value agree well and the theory value provides scientific grounds to the uninstall of the roof.
Keywords: large span structure; consUuct by stages; install case; construction simulation; temperature influence