六杆四面体单元组成的新型球面网壳的稳定性能分析  

Stability analysis of a novel spherical lattice shell composed of six-bar tetrahedral units

作　　者：白光波[1] 董石麟[1] 郑晓清[2] 

机构地区：[1]浙江大学空间结构研究中心,浙江杭州310027 [2]浙江大学建筑设计研究院有限公司,浙江杭州310028

出　　处：《空间结构》2014年第4期29-38,共10页Spatial Structures

基　　金：国家自然科学基金项目(51478420);浙江大学建筑设计研究院有限公司科研基金项目

摘　　要：对平面投影为四边形的六杆四面体单元组成的新型球面网壳进行了稳定性能分析,包括特征值屈曲分析和考虑初始缺陷的双重非线性分析.分析工作主要由两个方面展开,一是对球面网壳的基本结构体系和两种加强结构体系的四种采用不同刚、铰接节点布置方式的计算模型进行稳定性能对比,二是对采用同一种刚、铰接节点布置方式的不同结构体系的稳定性能进行比较.由此得到了刚、铰接节点布置方式对网壳结构稳定性的影响,以及加强杆件对不同计算模型稳定性能提高效果的差异.根据对比分析的结果,结合实际工程经济、技术指标的要求,提出了这类新型球面网壳宜优先选用的结构和节点体系.The stability analysis of a novel spherical lattice shell, including eigenvalue buckling analysis and nonlinear buckling analysis, is carried out in this paper. The shell is composed of six-bar tetrahedral units with quadrilateral projections. The analysis is executed from two aspects. Comparisons among the stability performance of the four calculation models with different joint arrangements （rigid or hinged） are firstly conducted for each of the structural systems, i. e. , basic structure and two reinforced structures, of the lattice shell. The stability performance of different structural systems with the same joint arrangement is compared with each other simultaneously. Thus the influences of the joint arrangement and reinforcing members on the stability performance of the lattice shell are unveiled. Some structural and joint systems of the novel spherical lattice shell which should be given high priority to in practical engineering applications are extracted based on the discussions and accounting for the economic and technical requirements.

关 键 词：六杆四面体单元 球面网壳 基本结构体系 加强结构体系 特征值屈曲分析 非线性分析 

分 类 号：TU393.3[建筑科学—结构工程]