Study on the seismic performance of cold-formed thin-walled steel concrete frame-corrugated steel plate shear wall structure
This paper presents a new type of cold-formed thin-walled steel concrete frame-corrugated steel plate shear wall(CTSCF-CSPSW).In this paper,a full-scale CTSCF-CSPSW is tested under low cyclic loading and used to carry out fine finite element analysis.The results show that the failure of the specimen is mainly due to the tearing of the embedded corrugated steel plate,the cracking of the concrete at the bottom of the column and the failure of the bolt hole at the bottom of the corrugated steel plate under pressure.With the increase of the aspect ratio of steel plate,the shear bearing capacity,peak load and initial stiffness of the structure are increasing,but the ultimate displacement is greatly reduced.With the increase of cold-formed thin-walled lipped channel thickness(column stiffness)and the decrease of the axial compression ratio of the frame column,the shear capacity,peak load,initial stiffness and ultimate displacement of the structure are increasing.Based on the analysis of the results,it is recommended that the width-to-height ratio of the corrugated steel plate should be less than 1.5.The thickness of cold-formed thin-walled channel steel in frame column should be greater than 1mm,and the axial compression ratio of the frame column should not exceed 0.3.It is suggested to increase the size of angle steel to connect the steel plate with the bottom beam,that is,to increase the end distance of the steel plate or adopt welding method.