加强型钢网壳结构的空间稳定性分析  

Spatial Stability of Reinforced Steel Shell Structure

作　　者：王秀丽[1] 彭瑾[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《厦门大学学报（自然科学版）》2008年第4期532-536,共5页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(50678078);甘肃省自然科学基金(3ZS061-A25-048);兰州理工大学优秀青年教师资助计划资助

摘　　要：为了加强型钢网壳结构的更好应用,通过使用有限元软件ANSYS,利用弧长法对结构进行几何非线性全过程分析,得出荷载-位移曲线,分析结构的整体稳定性能,与纯单层柱面网壳进行对比;并与平面内结构稳定极限承载力对比,阐述空间分析的必要性.之后分析不同跨度下矢跨比、不对称荷载和初始缺陷各参数对结构的影响.结果表明,结构的稳定极限承载力和刚度有较大的提高.In order to have better applications, arc length method has been used to analysis the whole process of geometry non-linear,by using the finite element analysis software ANSYS. The overall stability of this structure was analyzed through load-displacement curve,and compared with single-layer latticed cylindrical shell; and then by comparing the stable ultimately bearing capability with in-plane structure, the necessary of analyzing spatial structure was also demonstrated. After that, the effect to the stability of this structure was discussed by changing parameters such as span-ratio, asymmetry force and initial flaw with different spans.

关 键 词：加强型钢网壳结构 稳定极限承载力 矢跨比 不对称荷载 初始缺陷 

分 类 号：TU392.5[建筑科学—结构工程]