平湖文化馆结构设计
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（浙江大学建筑设计研究院， 杭州 310028）［摘要］平湖文化馆主楼前厅外挑16.8m，竖向承重体系不能连续，通过结构方案对比，工程设计中根据建筑外形特点采用六榀钢筋混凝土斜腹杆桁架，实现结构受力与建筑外形要求的统一。运用SATWE和MIDAS/GEN两种不同有限元模型软件进行对比分析校核，保证大跨外挑桁架结构的安全性与可靠性。观众厅屋面跨度25.2m，采用钢-混凝土组合结构，通过在支座处混凝土楼板设置施工后浇带，释放端部弯矩，避免出现支座裂缝。［关键词］大跨外挑桁架; 组合楼盖; 支座裂缝中图分类号：TU398+.7 文献标识码：A 文章编号：1002-848X(2013)15-0080-03Structural design of Pinghu Cultural CentreLiu Ruofei, Liu Guomin, Qin Conglu(Architectural Design and Research Institute of Zhejiang University, Hangzhou 310028, China)Abstract: The antechamber of the main building in Pinghu Cultural Center overhangs 16.8m, the vertical bearing system is not transfixion. Through comparative study of different structural schemes, six reinforced concrete of oblique belly truss are used in this project based on the characteristic of architectural features, to realize the unification of structural performance and architectural configuration. Analysis and check are presented by comparing two different finite element models of SATWE and MIDAS/GEN, to ensure the security of the main structure. The roof span of auditorium is 25.2m and the steel-concrete composite structure is used. Using the setting of after pouring belt on concrete floor at the bearing, the moment at the end is released and the cracks at the bearing are avoided.Keywords: reinforced concrete; large span truss; composite floor; bearing crack作者简介：刘若斐，硕士，一级注册结构工程师，Email：purplelrff@yeah.net。参考文献［1］GB 50011—2010建筑抗震设计规范［S］.北京： 中国建筑工业出版社，2010.［2］GB 50010—2010混凝土结构设计规范［S］.北京： 中国建筑工业出版社，2011.［3］北京迈达斯技术有限公司.MIDAS/GEN分析与设计原理［M］.2010.［4］李永强，刘亚坤，鄢邻川.钢筋混凝土桁架在大跨度工程中的应用实践［J］.平顶山工学院学报,2006,15(5):58-61.［5］张明. 现浇混凝土悬挑桁架在舞台项目中的应用［J］. 山西建筑,2011,37(14):29-30.
