The Finite Elememt Analysis Of The Influence Of Cast-in-place And Infill-walls On The Seismic Performance Of RC Frame Structure

By using 3D large finite element analysis software ANSYS, building a pure RC frame with cast-in-place slab,a RC frame without floor frame, two or three layers of infilled wall RC frame and infilled wall RC frame four spatial structure of the building three layer model with numerical analysis, modal analysis, static analysis and dynamic time history, the vibration mode, period and floor displacement,displacement from this angle, investigate the influence law of cast-in-place concrete floor and filled wall on the frame structure of the static, dynamic characteristics.By comparison with the PKPM numerical results, verify the reliability of the numerical model of ANSYS. Using four different numerical simulation analysis and comparison with different models, analysis the seismic performance of RC frame structure, especially the effect of static, dynamic characteristics of seismic cast-in-place floor and filled wall of frame structure of the RC response. The main research contents are:(1) The existing research on the cast-in-place slab and wall frame filled literature,summarizes a lot of analysis and conclusion of cast-in-place concrete floor and filled wall of frame structure, such as cast-in-place concrete floor and filled wall will lead to beam column frame structure, the ratio of flexural bearing capacity change. In the existing research on the basis of the numerical simulation method of the pure frame model, with a floor frame model, two or three layers of infilled frames with infilled frame model and the model of modal analysis, static analysis and dynamic analysis,hoping to provide help for the practical engineering design.(2) Introduced in the nonlinear finite element calculation model of reinforced concrete numerical model and analysis method.(3) For the two important factors in actual seismic design design goal of "strong column and weak beam" and the realization of this ideal yield mechanism: floor and filled wall, in-depth study, the modal analysis and the static analysis approach to zero load and lateral load, floor and wall(and its distribution location effect of) in the entire structure, analysis of their static characteristics in RC frame structure in earthquake.(4)Change the amplitude of the peak acceleration of 35cm/s2 ElCentro wave,Northridge wave and artificial wave respective,of three kinds of seismic waves(earthquake) and 220cm/s2(earthquake) amplitude, and then enter the amplitude modulated wave, study on seismic dynamic time history of the four numerical models,through the comparison of numerical results, discussion of cast-in-place floor and filled wall(and location) influence on the dynamic characteristics of the frame structure of the RC.