The Experimental Study And Non-linear FEM Analysis Of Hollow Shear Wall Of Reinforced Concrete

With the alteration and innovation of traditional building technique and implementation of the policy on walling material and energy saving, the development of the residential structure system becomes one of the pre-task in engineering at present. Based on the traditional shear wall, R.C hollow shear wall, a new residential structure system, is advanced in this paper. The hollow shear wall not only have the advantages of traditional shear wall, such as the good capability of resisting earthquake action, but also overcome the shortcoming of traditional shear wall, such as the large self-weight, stiffness and seismic residences. Appling the hollow shear wall to multi-story and sub-high rise residences, these can be come into being that include reducing self-weight, stiffness, earthquake action, and improving ductile, saving material and energy, so building's integration economy target can be fallen.This paper focuses on the experimental study and non-linear FEM analysis of hollow shear wall of reinforced concrete. Its test specimens are four hollow shear wall of reinforced concrete, which have the different the ratio of shear span to effective depth of section and the ratio of axial compressive force to axial compressive ultimate capacity of section. First, by low-cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. Speaking in detail, for every specimen, we study the degree of the cracking load, yield load and failure load, the property of hystersis curves and keleton-frame curves and the property of ductility. Second, based on the experimental data, and making used of ANSYS program, the nonlinear finite element analysis program, two hollow shear walls are analyzed. Through comparing and analyzing of bearing capacity, development of crack and strain of reinforced, the results show that the load-deflection plots for specimens from the finite element analysis agree well with the experimental data, and choosing the rightful stress-strain relationship, utilizing ANSYS program, the test process can be well simulated. At the sametime, making used of the program, the traditional shear wall is analyzed. It shows that comparing with the traditional shear wall, the hollow shear wall's cracking load drop 16%, yield load and failure load drop 13%, stiffness drop 13%~22%. From cracking to yield, from yield to failure, the hollow shear wall's stiffness degeneration is almost same to the traditional shear wall, but at last phase , the hollow shear wall's stiffness is comparatively steady.