Study On The Buckling Behavior And Hysteretic Behavior Of Assembled Cross-Ribbed Steel Plate Shear Wall

In this paper,a new type of anti-side force system-assembled cross-ribbed steel plate shear wall was proposed and authorized by the national utility model patent.Compared with the traditional vertical and horizontal ribbed mesh steel shear wall structure,in this system,the arrangement direction of the stiffeners was changed that the ribbed strips of the cross-tight ribs were arranged along the diagonal of the embedded steel plate.Therefore,a significant suppression effect was formed on the formation and development of the tensile band of the embedded steel plate,and the mechanical performance of the structure was further improved.To investigate the mechanical properties of the proposed new system,the finite element analysis software ABAQUS-6.14 was used to simulate the behavior of the shear wall structure under horizontal repeated loading.The main research contents and results are as follows:(1)The numerical simulation test was conducted by using the finite element software ABAQUS with a single-span single-layer steel shear wall structure and the hysteretic behavior of the existing single-span two-story steel frame-multi-ribbed composite steel plate shear wall structure.The analysis results showed that the analysis of structural buckling performance had little difference between the finite element simulation results and the theoretical calculation results.For the analysis of structural hysteresis performance,the finite element simulation results were basically consistent with the experimental research results,and the finite element modeling and calculation methods were applied to the research structure.Both buckling performance and hysteretic performance had good accuracy and reliability.(2)The effects of the frame stiffness,rib stiffness ratio and wall-to-thickness ratio on the buckling load of cross-tight ribbed shear wall structure were analyzed.The buckling coefficients of each specimen were compared and analyzed.Considering the factors such as the size and economy of the test piece,the reasonable value range of each parameter was as follows: the recommended frame column stiffness value range was 0.85???0.95;the rib plate stiffness ratio was 40???50 ;The thickness ratio of the steel plate is in the range of 500???600.(3)In addition,a comparative analysis of the mechanical behavior between the vertical and horizontal ribbed shear wall structure and the cross-ribbed steel plate shear wall under horizontal repeated loading was carried out.It can be concluded that the new system exhibited a better seismic performance than that of the vertical and horizontal ribbed mesh steel shear wall structure.The hysteresis curve of the cross-tight ribbed steel shear wall structure was more full,the energy consumption,bearing capacity and lateral stiffness were improved significantly,which demonstrated that the new shear wall anti-side force system proposed in this paper has excellent mechanical properties and can be applied in practical engineering.(4)The influences of the design parameters on the hysteretic behavior of the cross-tight ribbed steel plate shear wall structure were analyzed by terms of the strength of the embedded steel plate,the thickness ratio of the embedded steel plate,the size of the cross-tight rib and the stiffness of the frame column.It was found that the steel plate shear wall structure with low yield point steel had better hysteresis performance,and the recommended range of parameters was as follows: the height-thickness ratio range of the embedded steel plate was500-600,cross ribbed rib slats were selected to be ??55 lanes,and the stability of the frame column was not less than 0.6.