索撑网壳——一种新型空间结构形式  

Grid shell—a new type of space structures

作　　者：李欣[1] 武岳[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《空间结构》2007年第2期17-21,31,共6页Spatial Structures

基　　金：国家自然科学基金资助项目(50478028)

摘　　要：索撑网壳是一种新型的空间结构形式,主要应用于大跨度玻璃采光顶结构中.本文对一40m跨度的椭圆抛物面索撑网壳结构进行了稳定全过程分析,考察了荷载的不同分布形式、不同索预张力以及不同截面等因素对索撑网壳结构稳定承载力的影响.通过对计算结果的对比分析,初步了解了索撑网壳结构的基本力学性能,为进一步将索撑网壳结构推向工程实践奠定了基础.Grid shells,widely used in glass roofs,are new types of reticulated shells. A paraboloid grid shell with a diameter of 40m is used for the parameter study. All computations are carried out based on accurate nonlinear complete-process analysis. The effect of asymmetric load distribution and different cable prestress are considered and detail comparison between different examples carried out to make further understanding of stability behavior. Some valuable rules on stability of grid shells for project design are gained, which can be served as technical reference for luther research and engineering practice of grid shells.

关 键 词：索撑网壳 表面平移法 稳定性 极限承载力 

分 类 号：TU393.3[建筑科学—结构工程]