开圆孔波纹腹板钢梁弹性抗剪屈曲  

Elastic Shear Buckling of Corrugated Web Girders with Circular Opening

作　　者：邱介尧 李国强[1,2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《上海交通大学学报》2016年第3期357-363,共7页Journal of Shanghai Jiaotong University

基　　金：国家"十二五"科技支撑计划项目(2012BAJ13B02)资助

摘　　要：进行了开有圆孔的波纹腹板钢梁腹板的弹性抗剪屈曲研究.建立了有限元模型,通过特征值屈曲分析得到弹性屈曲荷载.探讨了开孔腹板弹性屈曲应力与孔径大小、腹板高度、腹板厚度、开孔的横向偏心以及纵向偏心的关系.在已有的未开孔波纹腹板受剪屈曲承载力计算公式的基础上,通过大量的有限元数值计算,分析了各参数的影响,以折减系数的形式得到开孔后的弹性抗剪屈曲承载力计算公式.In this paper, a study on elastic shear buckling of corrugated web girders with circular openings was conducted. A finite element model was established and the elastic buckling load was obtained through eigenvalue buckling analysis. The influence of diameter of opening, web height, web thickness, the trans- verse and longitudinal eccentricity of opening on the elastic shear buckling was investigated. Based on lots of finite element numerical analysis, the calculation formula for elastic shear buckling capacity of corruga- ted web girders with circular opening was derived in the form of reduction coefficient.

关 键 词：波纹腹板 开孔 弹性抗剪屈曲 数值分析 

分 类 号：TU391[建筑科学—结构工程]