某海螺形自由曲面单层网壳结构形态构建和整体稳定分析  

Configuration and overall stability analysis of a single-layer reticulated shell with conch-shaped free-form surface

作　　者：郑少鹏 张龙生 王星 陈磊 ZHENG Shao-peng;ZHANG Long-sheng;WANG Xing;CHEN Lei(Guangzhou Design Institute Group Co.,LTD,Guangzhou 510620,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州市设计院集团有限公司,广东广州510620 [2]广州大学土木工程学院,广东广州510006

出　　处：《空间结构》2021年第3期11-16,共6页Spatial Structures

基　　金：国家自然科学基金项目(51678313);广东省高校重点科研项目(2019KZDXM050);广州市科技计划项目(202102010457)。

摘　　要：通过三维建模软件Rhinoceros及其可视化编程插件Grasshopper,参数化建模出一种海螺形自由曲面网壳结构.采用ANSYS软件对该结构进行几何非线性分析,研究不对称荷载和初始几何缺陷对结构整体稳定性的影响.采用本文的自由曲面建模方法可以方便、快捷、参数化地设计出建筑师想要的不规则曲面建筑.分析表明:该结构对不对称荷载并不敏感,具有较强的抵抗非对称荷载的能力,初始几何缺陷的存在对该结构有利,该结构的整体稳定性良好,满足规范要求.Through the 3 D modeling software Rhinoceros and its visual programming plug-in Grasshopper, a conch-shaped free-form surface reticulated shell structure was parametrically modeled. The ANSYS software was used for geometrically nonlinear analysis of the structure, and the effects of asymmetric load and initial geometric imperfestions on the structure were studied. The free-form surface modeling method in this paper can easily, quickly and parametrically design the irregular surface building that the architect wants. Analysis shows that the structure is not sensitive to asymmetric loads and has strong resistance to asymmetric loads. The existence of initial geometric imperfections is beneficial to the structure. The overall stability of the structure is good, and meets the requirements of the code.

关 键 词：海螺形自由曲面网壳 GRASSHOPPER 初始几何缺陷 几何非线性 

分 类 号：TU393.3[建筑科学—结构工程]