| The reinforced concrete frame shear wall structure system is widely used in high-rise concrete buildings because its many advantages such as flexible arrangement and multi protection,which can well meet the needs of structural function.At present,the research on concrete structure is mainly focused on the frame structure or shear wall structure,but the research on the optimization design of the frame shear wall structure needs more attention.And there are few studies on the influence factors of the force performance of the frame shear structure because of its complexity on the whole property which combined with frame structure and shear wall structure.Therefore,this paper study on the influence of the strength and distribution of the material on the mechanical properties of the frame shear wall structure.In this study,as the 12th Five-Year National Science and technology support program(2011BAJ10B04)part,based on the completed reinforced concrete frame shear wall structure of the whole series of experiments on the structure,the non-linear finite element method is used to analyze the discrete nonlinear of the concrete strength and reinforcement strength of the performance of each component material specimen model.The research method used in this paper is based on the nonlinear finite element simulation,and the reliability of the finite element software is verified by the experimental results.Based on the nonlinear finite element software WCOMD developed by University of Tokyo in Japan,the finite element model of scale 1/2 named PCI based on a two stores reinforced concrete frame shear wall structure,and the finite element simulation is carried out to analyze the response of PC1 under low cyclic loading,and the simulation results are compared with the test results.The results of comparison show that the two results are match well,which verify the reliability of the finite element simulation analysis.In order to further analyze the influence of concrete strength and reinforcement strength on the force performance assembling frame shear wall structure,the finite element of 7 groups of 15 parameters of different models,and the use of finite element simulation software WCOMD,the stress model under low cyclic horizontal loading process.By comparing and analyzing the hysteretic curve and skeleton curve,it can be concluded that the bearing capacity of the structure will increase slightly with the increasing of the strength of the column,shear wall and east-in-place concrete,but the difference of the strength of concrete and reinforcement in beam has weak influence of bearing capacity and ductility of the structure.With the increase of strength of concrete in the shear wall and the strength of concrete and reinforcement in column,the ductility of the structure decreases obviously.But with the decrease of the strength of cast-in-place concrete,the ductility of the structure decreases rapidly.By comparing stiffness degradation curve of each specimen model,it can be concluded that the increase of the strength of concrete can obviously influence the initial stiffness of the structure,but the increase of the strength of reinforcement can just influence the stiffness degradation rate of structural failure stage.This paper just study on the influence of the difference of strength and distribution of concrete and reinforcement on the force performance of frame shear structure by using the finite element simulation software WCOMD,there still needs lots of experiments and simulations to work on whether other factors will influence in the performance of the structure.Research on the mechanical behavior of frame shear wall structure system not only contribute to the research on quantitative evaluation method of the whole structure performance,but also contribute to efficient use of building structure for resources which comply with the requirements of the national energy-saving emission reduction. |
PDF Full Text Request