Fill Walls On The Influence Of The Seismic Performance Of Light Steel Frame Structure

In recent years,the light steel frame structure has been widely used in the construction of our country,and has been widely used in the middle-low residential buildings and the middle-low buildings,however,in the study of the seismic performance of the steel structure residence system,the infill wall is only used as a retaining member,and the influence of the infill wall is considered by applying a linear load on the model.When adding filler wall,structure of the cycle,the interlayer displacement,acceleration and internal force will change greatly,so in the design of steel structure,it should consider the cooperative performance of infill wall with light steel frame,and reasonably consider the influence of infill wall on the seismic performance of the structure,therefore,the study on the influence of infill wall on the seismic response of steel structures is a very meaningful topic.In this paper,through the establishment of 4 kinds of light steel frame model,i.e.pure light steel frame structure,shear wall + light steel frame structure,filler wall + light steel frame structure,shear wall + filler wall + light steel frame structure,and by using the method of response spectrum and time history analysis,the influence of infill walls on the natural frequencies and mode shapes,displacements,accelerations and internal forces of light steel frames is studied.The specific contents of this paper are as follows:1.This paper adopts a spring element to simulate the infill wall connect with the light steel frame structure,by establishing the model of different spring stiffness,the reasonable spring stiffness is studied to simulate the connection between the infill wall and the light steel frame structure.2.Through the study of 4 kinds of light steel frame model of the first 10 natural frequencies and formation,get the formation of order 3 characteristics of lightweight steel frame structure and infill walls on the light steel frame structure self vibration frequency and the influence of formation.3.The response spectrum analysis method is used in this paper,under the seismic action along the width direction,this paper studies the influence of infill wall on the maximum displacement,the displacement of each layer,the displacement between layers,and the shear force and bending moment of the columns,accordingly get the influence of infill wall on light steel frame seismic frame structure.4.In this paper,the time history analysis method is used,under the seismic action along the width direction,using 3 seismic waves,research on light steel frame filled wall structure of the maximum vertex displacement curve,the maximum displacement curve,vertex displacement time history curve and peak acceleration curve,and the influence of the shear time history curve and the time history curve of the bottom of the column,so as to get the effect of infill wall on the seismic behavior of light steel frame structure.