新型折板网壳结构特性及关键技术研究  

Studies on Key Technical Problems and Structural Characteristics of a New Folded Plate Latticed Shell

作　　者：虞终军[1] 刘冰[1] 

机构地区：[1]同济大学建筑设计研究(集团)有限公司,上海200092

出　　处：《结构工程师》2012年第4期27-33,共7页Structural Engineers

摘　　要：折板网壳结构是一种新型的结构形式,兼具了空间桁架结构与空间网壳的优点。重点介绍了该结构在分析与设计中的关键问题:结构体系的布置与力学特性;荷载的安全取值以及构件合理计算长度系数的确定;利用弹塑性方法分析其稳定性、极限承载力以及塑性发展规律以说明折板网壳结构优异的力学承载性能;对复杂套钢管节点进行弹塑性分析。分析方法和结果可供类似结构的设计、分析参考。As a new type structure, the folded plate latticed shell has both advantages of space truss and space shell. This paper discusses several technical problems of structural design including structural layout, mechanical characteristics, load case suggestion, and effective length factor for members. Then elasto-plastic calculation has been performed on the stability, ultimate load capacity, and plastic development path, which shows the excellent load bearing capacity. For the key joint, the elasto-plastic analysis is carried out also. The analysis method and important conclusions can be the reference of similar projects.

关 键 词：折板网壳 计算长度 初始缺陷 几何非线性 弹塑性极限承载力 套钢管节点 

分 类 号：TU399[建筑科学—结构工程]