The Research Of Vertical Stiffness Distribution Pattern Of Bulit-in Steel Of Concrete Shear Wall

SRC(Steel reinforced concrete)shear wall is an innovative shear wall—steel rids are set up to the shear wall interior.Recent researches illustrated that the performance of SRC shear wall is better than regular shear wall,including the resisting bending capacity,resisting shear capacity,ductility and energy dissipation.However,the irregular SRC shear wall is infrequently applied to the structural system.Hence,the seismic performance of the structural system composed of irregular SRC shear wall has significant theoretical significance and great project application value.Owing to the structure system of the experimental study of time-consuming,only according to a few shear wall test results are difficult to fully determine the various parameters of built-in vertical structural steel to impact on the seismic performance of SRC shear wall.Therefore,the finite element method has become a realistic and important means to study the mechanical properties of built-in vertical structural steel SRC of shear wall.It is briefly summarizing the recent overseas and domestic seismic research results that is based on the structural steel concrete shear wall.This article adopts general finite element software-ABAQUS to establish the irregular SRC shear wall of three-dimensional finite element model,analyzing structure under the monotonic loading and cyclic loading quasi-static analysis of static elastic plasticity analysis.It has analyzed the irregular SRC shear wall of seismic performance under different loading modes to study its effect regular,including the index of loading carrying capacity,stiffness degradation,ductility,energy dissipation and lateral displacement.The analysis results indicated that the system has higher loading carrying capacity and larger lateral stiffness and excellent energy dissipation capacity.The composition of structure make each component of transferring force distribute specifically.It adequately exerts the mechanical properties of various materials,better implementing seismic energy-dissipation by the structure.It is also seeking the optimal seismic model of structure which is the deformation model that embody flexure-shear type curve of greater seismic performance.The core tube structure failure occurred that structural inter-story displacement rotation exceeds the elastic-plastic inter story drift limits of 1/120[1] of maximum consideration earthquake,correspondingly the structure owns excellent collapse prevention capacity.Due to suffer loading from the different locations,the base of core tube is suffered from overturning moment and shear which occupy different proportion.Accordingly the effect of structural seismic performance is also different,the structural system transform shear type into bending type of energy-dissipation pattern.Referring to the preliminary results of simulation analysis,this article verify the available/feasible of structural system and providing some recommendations in the optimization design of the structure.The research results laid a good foundation for research group to study a series of the subsequent researches.