张伟育¹，王洪军¹，黄聿莹¹，赵 伟²

（1 华东建筑设计研究院有限公司，上海 200002；2 石家庄勒泰房地产开发有限公司，石家庄 050011）

 

［摘要］石家庄勒泰中心空中广场屋盖采用不规则钢结构折板桁架，结构承重柱位于裙房层5~7屋顶，复杂的结构形状和支承条件造成结构受力很不均匀。介绍了结构体系选型；对比了带下部混凝土结构和不带下部混凝土结构两个模型对地震作用效应计算的差别，说明了整体分析的必要性；风致效应直接读取风洞试验计算结果进行应力和位移验算，对应3种雪荷载分别采用三种性能控制水准；对结构整体稳定极限承载力和关键节点进行了有限元分析，确保结构安全。

［关键词］折板结构；整体稳定；性能设计

中图分类号：TU398.7文献标识码：A文章编号：1002-848X(2012)05-0145-05

 

Zhang Weiyu¹, Wang Hongjun¹, Huang Yuying¹, Zhao Wei²

（1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China；2 Shijiazhuang Lertai Real Estate Development Co., Ltd., Shijiazhuang 050011, China）

 

Abstract: The roof structure of Lertai Center Sky Plaza adopts irregular steel folded plate trusses and the bearing columns sit on the fifth, sixth and seventh floors of the podium. Behaviours of the structure are unusual for the complex shape and supports. The selected structural system was introduced. The computational differences in the effects of earthquakes on the two models with and without the lower concrete structure were compared to illustrate the necessity of an overall analysis. The stress and displacement under the wind load were calculated by the results of the wind tunnel test. Three performance-based design standards were used under three snow load states. Overall stability limited resistance and key joints were analyzed by finite element software to ensure the safety of the structure.

Keywords: folded structure; overall stability; performance-based design

作者简介：张伟育，高级工程师，Email：weiyu_zhang@ecadi.com。

 

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［2］石家庄勒泰中心空中广场屋盖结构风洞试验研究报告［R］. 石家庄：石家庄铁道学院，2011.

［3］JGJ 7—2010 空间网格结构技术规程［S］. 北京：中国建筑工业出版社，2010.