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某50-4m跨门形超限高层建筑结构设计
邱剑1,李会军2,余宏1,廖根1
摘 要

(1 中信建筑设计研究总院有限公司, 武汉 430014; 2 柳州东城投资开发有限公司, 柳州 545616)

[摘要]某门形建筑有14层(包含屋面)跨度50-4m的连接体,且存在楼板不连续、侧向刚度突变、竖向构件间断、受剪承载力突变等4种类型的超限,属于特别不规则的超限高层建筑。为了减小转换桁架构件内力和截面,上部结构的设计并没有执行《高层建筑混凝土结构技术规程》(JGJ 3—2010)关于连体结构板厚的相关规定,而是通过概念设计选择转换层7,9,13,15层楼板150mm厚,其他层楼板主要厚度为100~120mm,仅部分大洞口周边楼板加厚到150mm。并采用多种软件(SATWE,MIDAS Building,MIDAS/Gen,PMSAP)对结构进行小震、中震、大震下的计算分析。结果表明,主体结构满足C级抗震性能目标要求,楼板应力满足规范要求。

[关键词]大跨度; 高层建筑; 超限; 转换桁架; 连体结构; 钢骨混凝土; 模拟施工

中图分类号:TU318文献标识码:A文章编号:1002-848X(2018)03-0014-05

 

Structural design of a 50-4m-span portal shaped out-of-code high-rise building

Qiu Jian1, Li Huijun2, Yu Hong1, Liao Gen1

(1 Citic General Institute of Architectural Design and Research Co.,  Ltd.,  Wuhan 430014, China; 2 Liuzhou Dongcheng Investment and Development Co.,  Ltd., Liuzhou 545616, China)

Abstract:A portal shaped building has a connected structure of 14 stories (including roof) with span of 50-4 m, and it is a special irregular high-rise out-of-code building with four out-of-code items, including floor slab discontinuity, lateral stiffness mutation, vertical member discontinuity, and shear capacity mutation. In order to reduce the internal force and cross section of the transfer truss, the design of the superstructure did not carry out the relevant provisions of  Technical specification for concrete structures of tall building (JGJ 3—2010) for slab thickness of the connected structure. Instead, the conceptual design method was chosen to determine the slab thickness of 150mm for transfer stories of 7th, 9th, 13th and 15th floors, slab thickness of 100~120mm for the other floors, and slab thickness of 150mm only for slabs at surrounding of the part of the large holes. A variety of softwares (SATWE, MIDAS Building, MIDAS/Gen and PMSAP) were used to calculate and analyze the structure under frequent earthquake, fortification earthquake and rare earthquake. The results show that the main structure meets the requirements of the C-level seismic performance requirements, and the floor stress meets the code requirements.

Keywords:large span; high-rise building; out of code; transfer truss; connected structure; steel reinforced concrete; simulated construction

 

作者简介:邱剑,硕士,教授级高级工程师,一级注册结构工程师,英国皇家特许结构工程师,Email:21244113@qq.com。

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