Simulation Analysis of Seismic Performance of Reinforced Concrete Frame Structures Before and After Reinforcement with External Seismic Isolation Bearings
WANG Keliang
ZHANG Juan
HAO Jun
TONG Ye
WANG Shuai
Abstract：This paper used seismic isolation bearings to reinforce reinforced concrete frame structures and studied the changes in seismic performance before and after reinforcement,so as to improve the reinforcement effect and enhance the seismic performance of buildings.By installing intermittent SMA bearings in the original reinforced concrete frame specimens,reinforced specimens were made,and the structural response of the specimens under different seismic wave effects was obtained by designing seismic input parameters.A loading device was equipped,and quasi-static simulation tests were conducted simultaneously on two sets of specimens,so as to detect the seismic strength of the steel bars.By comparing the changes in displacement angles between the lower layers of two sets of specimens under different seismic wave conditions,it is proven that the maximum inter-layer displacement of reinforced concrete frame structures occurs at the bottom of the structure.Compared with that of the original specimens,the structural response performance of the specimens reinforced with seismic isolation bearings increases by 38.47%and 40.14%,respectively.The horizontal load displacement-hysteresis curves of two sets of specimens are taken,and the experimental results show that after reinforcement,the seismic isolation bearings can increase the hysteresis loop area by 42.8%.Seismic isolation bearings can effectively improve the seismic performance of building frame structures.Compared with that of the original specimens,the residual deformation of the reinforced specimens is lower,which can fully utilize the load-bearing capacity of the structure.
Keywords：Reinforced concreteSeismic isolation bearingReinforcement methodSeismic performance
Publication Date：2024-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 168-176 )