Numerical Simulation Of Semi-rigid Connection Steel Frame With Double Sandwich Thin Steel Plate Shear Wall Structure

In recent years, with the rapid development of city construction,building height were built more and more high.Meanwhile Lateral performance of building structure are increasingly high requirements. steel plate shear wall,which has better lateral stiffness、ultimate bearing capacity and good energy dissipation capacity,has been widely used at home and abroad. Steel plate shear wall has the following several kinds of forms for example Unstiffened thin steel plate shear wall、 Unstiffened thick steel plate shear wall、Stiffened steel plate shear wall、Steel plate shear wall with two slot、 The profiled steel plate shear wall and Low yield point steel plate shear wall.According to the principle of the post buckling strength of thin steel plate the paper presents a double thin steel plate shear wall structure,which has excellent bearing capacity after the plate develop the post buckling strength and has good performance.The double thin steel plate,filled with insulation,thermal insulation,sound insulation and other materials,can realize the construction and functional requirements.Then the steel plate and the semi-rigid steel frame can link together to form double resistance lateral force system.This paper analyzes the whole performance of semi-rigid connection steel frame with double thin steel plate shear wall by the finite element analysis software ANSYS.Through the parameter change of frame column stiffness the depth-thickness ratio and the span depth ratio to get the influence of parameter change on the structure of lateral bearing capacity and the ratio of shear which the steel plate undertake,then draw the load-displacement curve.. stress nephogram and structure deformation.Results indicated that the appropriate frame column can provide enough constraints for the double plate to make the steel belt tension fully develop and improve the bearing capacity of the shear wall, which also reflects the idea that frame is as a second line of the lateral force resisting system. The bearing capacity of steel decreased with increasing of the depth-thickness ratio. So the appropriate thickness of the steel plate selected not only can provide enough bearing capacity but also can give full play to the performance of steel plate. The bearing capacity of steel increased with increasing of the the span depth ratio.Thus, It is significant to select the appropriate steel plate span for the application of the steel plate shear walls.In addition,by the finite element analysis of reciprocating load to the structure we can get the performance of structure such as hysteretic curve、skeleton curve、 ductility and energy dissipation.Then we can provide some research results of the theory about the seismic performance of semi-rigid connection steel frame with double thin steel plate shear wall structure.The results show that the structures has high bearing capacity and stiffness.Under cyclic loading,the structure has plump hysteretic curve、large energy consumption and big ductility coefficient. So the structure has a good seismic performance.