RESEARCH ON STIFFNESS MATCHING RELATIONSHIP BETWEEN EMBEDDED STEEL PLATE AND REPLACEABLE TOE DAMPER IN CORRUGATED STEEL PLATE SHEAR WALL

In order to study the influence of the stiffness matching relationship between the embedded steel plate and the replaceable toe damper of the steel plate shear wall on its seismic performance, a steel plate shear wall specimen with damper was designed, and the quasi-static load test of the specimen before and after the replacement of the damper was conducted twice. The test results showed that the thickness of the damper web was too large, which caused the embedded steel plate to deform before the damper web, which led to the insufficient energy consumption of the specimen. The thickness of the damper web was reduced,which could improve the energy consumption of the shear wall,but the bearing capacity decreased. It could be proved that the stiffness matching relationship between the embedded steel plate and the damper has a critical impact on the seismic performance of the shear wall, such as bearing capacity, energy consumption and ductility. In order to clarify the reasonable matching relationship, 32 models were established by ABAQUS finite element software for numerical simulation. The stiffness of the damper and the embedded steel plate were changed by changing the thickness of the damper web, the direction of the corrugated rib of the embedded steel plate and the thickness of the steel plate,comparing numerical analysis results and test results showed that the finite element analysis results were in good agreement with the test results, the corrugated ribs in the horizontal direction reduced the bearing capacity of the specimens, when the corrugated ribs were in the vertical direction, the thickness of the embedded steel plate and the damper web was 5 mm and 6 mm respectively, the bearing capacity, the ductility and the seismic behavior of the specimen were better.