双层柱面网壳整体稳定性分析  

Analysis of overall stability of double layer cylindrical lattice shells

作　　者：赵琳[1] 杨晓明[2] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]青岛理工大学建筑科技总公司,青岛266033

出　　处：《青岛理工大学学报》2012年第3期31-34,共4页Journal of Qingdao University of Technology

摘　　要：利用有限元方法,对双层柱面网壳的稳定性进行了几何和材料双重非线性分析,通过荷载-位移曲线将结构的强度、稳定性以及刚度的变化历程表现出来,以确定矢跨比、非对称荷载和初始缺陷等不同因素对结构临界荷载的影响,得出对工程设计有指导意义的结论.This paper makes a geometry and material non-linear analysis of the stability of a double layer cylindrical lattice shell by means of a finite element method. It also indicates the changing process of the structural strength, stability and rigidity through the load-displace- ment curve so as to ascertain the impact of the span ratio, load distribution and initial imper- fection on the critical load and draw a conclusion that is of significance for the engineering de- sign.

关 键 词：双层柱面网壳 临界荷载 矢跨比 非线性 初始缺陷 

分 类 号：TU323[建筑科学—结构工程]