Study On Seismic Behavior Of L-Shaped Solid Web Steel-Reinforced Concrete Column Joints And Structures

Solid web type steel-bone concrete column is a new type of column.This new type of column has a good effect on improving people's residential comfort,which is specifically reflected in the fact that indoor Angle column,middle column and side column are not prominent,so as to increase the indoor usable area and have a good visual effect.At the same time,this new type of column has obvious effect on the improvement of the bearing capacity of the frame system,so it is of great significance to the research of special-shaped steel-reinforced concrete column.Therefore,two finite element software,ABAQUS and MIDAS,are used to analyze the mechanical behavior of 1-shaped solid web SRC column and beam joints as well as the model in the whole frame system.ABAQUS finite element software was used to simulate the joint model of 1-shaped solid web steel-reinforced concrete column and beam to study the mechanical behavior of the joint.in ABAQUS,the element model,the constitutive relationship of each component,the interaction of each component,the boundary conditions of the model,the application of load and the division of grid are determined.Finally,a reasonable finite element model is established to analyze the mechanical performance.This paper mainly analyzes the mechanical properties of the model in different axial compression ratio,concrete strength grade,steel-bone ratio,steel-bone strength and steel girder web size.The results show that the hysteretic curves under five different conditions are all fusiform and full,which reflects the good mechanical properties of the components.Under the five conditions,the web size of steel beam has a great impact on the mechanical performance of the joint,the steel ratio and the strength of steel bone have a slight impact on the mechanical performance of the joint,and the axial compression ratio and the strength of concrete have almost no impact on the mechanical performance of the joint.MIDAS/GEN finite element software was used to establish the frame system of special shaped steel reinforced concrete columns,and the static elastoplastic Pushover analysis of the structure was carried out under rare earthquakes.The method of equal generation of stiffness was used to equalize the special-shaped steel-reinforced concrete columns.According to the actual size,a 10-storey frame model was established.By defining the static load condition of the model,the dead weight,natural vibration period,base shear and overturning moment and lateral displacement of the structure model were analyzed,and the comfort level of the structure model was checked.And then using the Pushover analysis method,obtained the base shear force and overturning moment,interlayer displacement,the interlayer displacement Angle,natural vibration period and so on can the parameters of the seismic performance evaluation structure system,the parameters obtained is then compared with the relevant specification,the conclusion special-shaped steel reinforced concrete column in the framework has good seismic performance...