福州海峡国际会展中心扩建项目外倾式落地空间拱桁架结构设计
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（北京市建筑设计研究院有限公司， 北京 100045）
［摘要］福州海峡国际会展中心扩建项目平面呈长椭圆形，纵向长度为280m，横向宽度为82m，结构高度为15.60m。结构横向采用单榀双曲空间管桁架，与纵向空间管桁架构成格构式钢框架结构体系。结构体型复杂，抗震要求高，整体结构纵向稳定性偏弱。采用MIDAS/Gen，MIDAS/FEA软件对结构进行了整体抗震设计和抗连续倒塌、整体稳定、关键节点应力分析，结果表明结构具有良好的抗连续倒塌和整体稳定性能，在保证结构安全的前提下，完美实现了建筑艺术与结构的有机结合。［关键词］双曲空间管桁架; 抗连续倒塌; 整体稳定; 关键节点中图分类号：TU318，TU393.3 文献标识码：A 文章编号：1002-848X(2015)18-0082-05
Structural design on extraversion landing space arch truss of Fuzhou Strait International Conference and Exhibition Center expansion projectXu Fugui, Wei Yanfang, Ni Feng, Zhu Xinggang(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: The shape of Fuzhou Strait International Conference and Exhibition Center expansion project is oval, with longitudinal length of 280m, transverse width of 82m and structural height of 15.60m. The lattice steel frame structural system is composed of transverse hyperbolic spatial pipe truss and longitudinal spatial pipe truss. The structure shape is complex with high requirements of seismic resistance, and the structure has lower global stability in the longitudinal direction. Programs of MIDAS/Gen and MIDAS/FEA were used to carry out global seismic design of the structure, the progressive collapse resistance analysis, global stability analysis and stress analysis of key nodes. The results show that the structure has good resistance to progressive collapse and well global stability, and the perfect combination of architectural art and structure is achieved under the premise of ensuring the structural safety.Keywords: hyperbolic spatial pipe truss; progressive collapse resistance; global stability; key node
作者简介：许富贵，硕士，工程师，一级注册结构工程师，Email：xufugui@biad.com.cn。
