Influence Of Infilled Walls On The Seismic Performance Of Reinforced Concrete Frame Structures

With the structure framework composed of beams,colums and foundations,reinforced concrete frame structures have been widely applicated in construction engineering.Generally,a certain number infilled walls are decorated to divide space in frame structures. In the past decades,infilled walls have been seen as nonstructural elements and the effect on seismi performance of frame structures were ignored. So there have been many cases of unreasonable layout of infilled walls.But the fact that many frames were serious damaged or even collapsed in previous earthquakes shows that ifilled walls have greate effect on seismi performance of frame structures by changing the number, layout unevenly in vertical or horizontal direction and the hole.In recent years, domestic and foreign studies have been carried through in the theory research and model experiment, but generally speaking, infilled walls in the frame structure of the study is still at a preliminary stage,a lot of work remains to be done. Therefore,this paper would mainly to the following studies:1. This paper first summarized and analyzed theoretically to the impact of infilled walls on seismic performance of frame structure and existing models and used a more reasonable equivalent bracing model.2. Assuming a five-layer framework structure, This paper used SAP200, the finite element analysis software to carry out the structural modal analysis on several different calculation structure models by changing the number, layout of infilled walls. And then analysed the dynamic properties of infilled frame structures.3. Carrying out nonlinear time history analysis on different calculation structure models to research the change of displacements, interlayer shear force and the internal force of the frame column.4. Comparing frame structure behavior with infilled walls as the structural components and structure components to advise necessity consideration of infilled walls.