Experimental study and finite element analysis on seismic performance of L-shaped steel pipe concrete column-steel beam joints
In order to study the seismic performance of special-shaped steel tube concrete joints,six L-shaped steel tube concrete column steel beam joint specimens were made in a 1∶2 scale ratio.Through low cycle reciprocating tests,the influence of factors such as axial compression ratio,beam column line stiffness ratio,and the presence or absence of floor slabs on the seismic performance of joints were explored.The test results show that the hysteresis curve of the specimen is full,and the specimen exhibits good seismic performance;As the stiffness ratio of the beam to column increases,the strength,stiffness,and ductility of the specimens all improve;As the axial compression ratio increases,its energy dissipation capacity also increases,but its ductility decreases;In addition,the presence of concrete floor slabs has a significant impact on the bearing capacity of nodes.At the same time,ABAQUS finite element software is also used to establish a finite element model for simulation analysis.The results show that the finite element calculation results are in good agreement with the experimental results,thus verifying the accuracy of finite element modeling and providing a basis for parameter analysis.
special shaped steel tube concretesteel beam nodeslow cycle reciprocatinghysteresis curvefinite element analysis
国家科技期刊平台
NSTL
万方数据
