Shear Performance of Cold-Formed Steel Tubular Hidden Column Composite Wall with Built-in Honeycomb Sandwich
Based on the advantages of honeycomb sandwich cold-formed thin-walled steel composite wall,a kind of cold-formed steel tube hidden column composite wall with built-in honeycomb sandwich was proposed in this paper,which realized the integrated design of frame column and wall.In order to study the shear performance of composite wall,the finite element analysis model of the composite wall was established by ABAQUS software,and the influence of hidden columns at both ends on failure mode and force mechanism of the composite wall was analyzed.The shear performance of the wall was analyzed by changing the connection mode between built-in honeycomb sandwich and steel tube hidden column,the arrangement of self-tapping screws,and the wall thickness ratio of steel tube hidden column to side column.The results show that shear function of honeycomb sandwich can be better played and its shear bearing capacity can be increased by 22.50%through adding steel tube hidden columns.The shear bearing capacity and stiffness of the wall can be effectively improved by strengthening the connection between built-in honeycomb sandwich and hidden column,and the overall effect is best when the connection is in the width direction of the wall.The shear performance of the wall can be effectively improved by making screw dense at tracks.The ductility of the wall can be improved by reducing wall thickness ratio of steel tube hidden column to side column within a certain range,but the effect on shear capacity is little.In addition,based on the principle of"equivalent safety coefficient",the shear capacity design values of walls were suggested initially under frequently occurred horizontal earthquake actions.
万方数据
维普
