西宁站风雨棚结构整体稳定性分析  

OVERALL STABILITY ANALYSIS OF XINING RAILWAY STATION SHELTER STRUCTURE

作　　者：黄永安[1] 

机构地区：[1]中铁第一勘察设计院集团城建院,西安710043

出　　处：《钢结构》2014年第5期43-45,共3页Steel Construction

基　　金：国家自然科学基金(51308454);中国博士后第54批面上项目(2013M542371);陕西省科技厅自然科学基金(2013JQ7006);西安理工大学高层次人才项目(118-211204)

摘　　要：西宁站无站台柱风雨棚采用"钢管混凝土柱+单层柱面钢网壳"结构,结构最大跨度24.3m。单层网壳结构是一种对初始缺陷比较敏感的结构,其稳定承载能力往往由屈曲后性能决定。而传统的特征值分析法往往会过高估计结构的稳定承载能力,也无法了解结构的后屈曲性能。针对西宁站风雨棚结构采用考虑几何非线性的有限元分析方法,对其整体稳定分析进行介绍。The concrete filled steel tube column and single layer cylindrical reticulated shell structures were used for the canopy of Xining ]Railway Station whose longest span was 24.3 m. The single layer reticulated shell structure is very sensitive to the initial defect structure, the stability bearing capacity is often determined by post-buckling performance. But the traditional eigen value analysis method tends to overestimate the bearing capacity of the structure stability, and the post-buckling performance of structure can not be known. Aiming at the Xining Railway Station shelter structure, finite element analysis method considering geometric nonlinearity was used, the integral stability analysis was introduced.

关 键 词：单层网壳 整体稳定 几何非线性 屈曲分析 

分 类 号：TU398.9[建筑科学—结构工程]