苏州太湖国际会议中心大跨度钢桁架结构设计
- 摘 要
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［摘要］在大跨度钢桁架结构设计中，采用倒放H型钢能够充分发挥桁架承受轴向力的优势；采用变高度桁架，在优化结构受力性能的同时满足建筑退台高差的要求。详细介绍了苏州太湖国际会议中心层2和层4钢桁架结构设计全过程，分析了大跨度钢桁架结构变形对支承型钢柱及整体结构的影响，并提出了钢桁架支承型钢柱及后连框架梁应考虑水平力对其不利影响。支承型钢柱按考虑桁架变形后实际内力复核配筋，后连框架梁按拉弯构件计算配筋，且构造上将上部纵筋全部贯通，以确保关键构件结构安全。
［关键词］大跨度钢桁架；变高度；结构变形；水平力中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2012)01-0001-05Structural design on large-span steel truss of Taihu International Conference Center in SuzhouDai Yaping, Yuan Xuefen, Zhang Du, Lian Haoliang（Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China）Abstract:H-shaped steel by upside down can be adopted to make full use of the advantage of steel truss which can bear axial forces in the design of large-span steel truss. Using the truss with variable height could optimize the mechanical performance of the structure while meeting the requirements of receded step with different height. The steel truss in the second and the fourth floor of Taihu International Conference Center in Suzhou was introduced in detail. The effects on the steel reinforced concrete columns and the whole structure caused by the deformation of large-span steel truss were analyzed. Also it brought forward that the horizontal forces must be considered while designing the steel reinforced concrete columns which support the steel trusses and the frame beams connected to them. The reinforcement of steel reinforced concrete columns which support the truss are checked by the effect of the deformation of trusses. The reinforcement of frame beams connected to the truss are calculated as stretch bending elements, and the bars on the top are running through in constructional detail to ensure the structural safety of the key components.Keywords:large-span steel truss; variable height; structural deformation; horizontal force作者简介：戴雅萍，教授级高级工程师，一级注册结构工程师，结构总工程师，Email:yaping.dai@siad.c.com。参考文献［1］GB 50011—2001建筑抗震设计规范［S］.2008年版.北京:中国建筑工业出版社,2008.［2］GB 50017—2003 钢结构设计规范［S］.北京:中国计划出版社,2003.［3］戴雅萍，赵宏康，陈磊.苏州国际博览中心卸货区钢结构桁架设计［J］.建筑结构,2008,38(12):59-61.［4］陈绍蕃.钢结构设计原理［M］.2版.北京：中国建筑工业出版社，1998.
