某切边不规则单层凯威特球形网壳结构设计与研究  

Design and research on a trimmed irregular single-layer Kiewitt spherical reticulated shell structure

作　　者：陈庆军[1,2,3] 贺盛[1] 陈映瑞[4] 赖洪涛[5] 于辰杰 

机构地区：[1]华南理工大学土木与交通学院,广州510641 [2]华南理工大学亚热带建筑科学国家重点试验室,广州510641 [3]新南威尔斯大学CIES研究中心土木与环境学院 [4]北京市建筑设计研究院有限公司广州分公司,广州510623 [5]华南理工大学建筑设计研究院,广州510641

出　　处：《建筑结构》2014年第12期68-73,共6页Building Structure

基　　金：广东省自然科学基金资助项目(9451064101002910);华南理工大学亚热带建筑科学国家重点实验室自主研究课题项目(2013ZC19);华南理工大学中央高校基本科研业务费专项资金资助(2014ZZ0026)

摘　　要：探讨了某切边不规则单层凯威特球形网壳实际工程的设计及研究。首先简要介绍了工程网壳的结构特点、荷载类型、设计信息等。而后利用SAP2000软件对带门洞和不带门洞的网壳模型进行分析对比,对切边处的支撑拱梁进行了变截面的参数化分析。研究了该球形网壳由于开洞而造成的不规则及不同支撑拱梁刚度的变化对网壳结构的承载能力、杆件内力分布规律、结构自振特性以及屈曲模态等的影响。最后采用ANSYS软件对该球形网壳进行了非线性稳定性分析,研究了其在考虑几何与材料双非线性时的失稳问题。分析结果能为结构及拱梁的优化设计提供参考。Design and research of a trimmed irregular Kiewitt spherical reticulated shell structure were studied. Firstly, the structural characteristics of this reticulated shell structure, the load type and design information were briefly introduced. Then the finite element software SAP2000 was used to analyze and compare the reticulated shell structure models with or without the openings. The parametric analysis of variational cross-sections of the support arch beam at the opening edge was carried out. The influences of the irregularity caused by the openings of the reticulated shell and the stiffness variation of the support arch beams on the shell bearing capacity, member internal force distribution law, vibration characteristics and buckling modes were studied. Finally, the finite element program ANSYS was used to perform the nonlinear stability analysis on the irregular shell and the instability problems with nonlinearities of both geometric and material were researched. The analysis results provide reference for the optimization design of the reticulated shell structure and the arch beams.

关 键 词：不规则 凯威特球形网壳结构 门洞 非线性稳定分析 

分 类 号：TU393.3[建筑科学—结构工程]