工字梁腹板和钢板剪力墙剪切屈曲系数分析  

Shear Buckling Coefficients of I-girder Web Panel and Steel Plate Shear Wall

作　　者：王庆义 李泽 

机构地区：[1]上海绿地建设(集团)有限公司,上海200083

出　　处：《建筑钢结构进展》2010年第3期37-42,共6页Progress in Steel Building Structures

摘　　要：目前工字梁腹板和钢板剪力墙抗剪设计中分别假定翼缘和周边框架为钢板提供简支约束,再通过乘以1.23的嵌固系数来考虑周边构件的约束作用,而不考虑翼缘或周边框架的刚度。本文对剪切荷载作用下工字梁腹板和钢板剪力墙的弹性屈曲进行了有限元分析,指出与周边构件扭转刚度和钢板弯曲刚度的比值有关的参数β可以准确地衡量周边构件对钢板的约束程度。在对1000多个模型计算结果分析的基础上,给出了工字梁腹板和钢板剪力墙剪切屈曲系数随参数β的变化规律。At present,Flanges of I-girders and surrounding members are assumed to supply simply supported edges for web of I-girder and steel plate shear wall in the method to calculate the ultimate shear strength,and then the embedded coefficient of 1.23 is introduced to consider the restraint effect of surrounding members. So the rigidities of flange of I-girder and the surrounding members （i.e. beams and columns） isn’t considered in the method to calculate the ultimate shear strength of web and steel plate shear wall. In this paper,the finite element analysis was carried out to investigate the elastic buckling of web panels in I-girders and steel plate shear wall under pure shear,and it is found that β,a parameter related to the ratio of torsional rigidity of the surrounding members and bending rigidity of the web/steel plate,is proper to consider the elastic restraints of flanges to webs. Based on result data from more than 1000 I-girder models,variation of shear buckling coefficients along with the parameter β is obtained for web of I-girder and steel plate shear wall.

关 键 词：工字梁腹板 钢板剪力墙 剪切屈曲系数 弹性约束 

分 类 号：TU311.2[建筑科学—结构工程]