Experimental Study And Simulation Analysis With ABAQUS On Seismic Behavior Of T-shaped Column Frame Joint With High-strength Reinforcement And High-strength Concrete

Nowadays,Urban land become more valuable,more and more high-rise buildings around us.Frame structure and frame shear wall structure are more favorable for seismic design of high-rise buildings.Most of traditional frame structures are made of rectangular section columns,and columns will be exposed to the outside of wall.This is not pretty and not good for furniture display.Special-shaped column can combined the wall and the pillar perfect,so that the indoor area will be smooth and bigger.Although T-shaped column as a common form of special shaped column had been included in "Technical Specification for Special-shapped Columns Concrete Structure",But the research on anti-seismic of T-shaped column frame joints is very rare.This paper combine structural test with ABAQUS finite element analysis to study the seismic performance of T-shaped column frame joints used high-strength building materials.Firstly,the parameters of concrete and stirrup have been measured in the experimental stage,then recorded the development and failure characteristics of cracks in the core of T-shaped column frame joints under cyclic loading.This article reaches the relationship of seismic behavior of T-shaped column frame joints with axial compression ratio,core area stirrup spacing and reinforcement ratio.Secondly,it uses ABAQUS to simulate these T-shaped column frame joints,and coMPare the results with test.On this basis,it changes factors include axial compression ratio and stirrup rate to research the influence of T-shaped column frame joints.