Research On Collapse Process Of Frame-filled Wall Structure Based On Component Removal Method

The demolition component method is one of the important research methods for continuous collapse analysis and continuous collapse design.Based on the demolition component method,this paper uses OpenSees finite element software to study the whole process of continuous collapse of the frame-filled wall structure.By removing the frame columns(inner columns and side columns)at different positions,the nonlinear static Pushdown analysis of the plane reinforced concrete frame infilled wall structure and the nonlinear dynamic time history analysis of the spatial reinforced concrete frame infilled wall structure are studied.The influence of structural parameters(layer height,span,number of layers)on the collapse bearing capacity and stiffness of the frame-filled wall structure.This paper analyzes the following conclusions:(1)Establishing a number of plane,space reinforced concrete frames and frame-filled wall structure models of different sizes,based on the demolished member method to analyze the structural deformation and ultimate capacity of collapse resistance,and study the span,layer number,layer height and failure column.The effect of position on the collapse resistance of the structure.The results show that the number of layers and spans have a great influence on the continuous collapse resistance of the structure,and the influence of the layer height is relatively small.The position of different failure columns has a great influence on the continuous collapse performance.(2)Demolition of the first inner column and side column of the plane reinforced concrete pure frame structure and the plane reinforced concrete infill wall frame structure,and the nonlinear static Pushdown analysis using the damaged cross-loading method to study the development of the plastic hinge of the damaged cross-structure The process results in a plastic hinge that first appears in the first or second beam end adjacent to the location of the damaged stump,substantially following the order of expansion from the first layer to the upper layer.(3)The nonlinear dynamic time history analysis of the space concrete frame structure with infill walls is carried out by using the demolition component method.The structure under the ground motion is analyzed for the continuous collapse resistance of the structure.The nonlinear dynamic time history analysis conclusion and Pushdown analysis are found.Basically consistent,but multi-dimensional seismic action will increase the deformation of the structure and aggravate the damage of the damaged cross-structure.