Experimental Research On Seismic Behavior Of Concrete Lattice Walls

In this paper, " concrete lattice walls "structure system has been studied, concrete wall formwork is made by overlapping the heat preservation block on the pore, the steel is put in the vertical and horizontal core hole, and than casting concrete.The main contents are summarized as follows:1) eight pieces of lattice concrete wall is designed, and the seismic performance has been studied by the quasi-static test, bearing capacity,rigidity, ductility and energy consumption of the concrete wall are measured, failure process and destroying forms of the wall is analyzed emphatically.2) through the analysis of failure process and destroying forms of the wall with different axial compressive ratio. Hysteresis loop, ductility coefficient and energy consumption coefficient of the walls with different axial compressive ratio are gotten.3) through the analysis of failure process and destroying forms of the wall with different side column reinforcement. Hysteresis loop, ductility coefficient and energy consumption coefficient of the walls with different side column reinforcement are gotten.4) compare this repeated loading test results and regulating the formula to calculate capacity, find the most consistent with experimental results of bearing capacity calculation formula.The results of experiments show that the main failure model of the concrete lattice wall with the axial compression ratio from 0.15 to 0.37 is shear failure, improving the axial compression ratio can improve the bearing capacity. Strengthening the side column reinforcement can increase the bearing capacity of the wall. Compare the wall that has strengthened side column with the wall that hasn't, when the axial compression ratio and the strength of concrete is the same, yield load, ultimate load, ductility, dissipated energy coefficient, equivalent damping ratio coefficient are all increased. For the wall that has not strengthened side column, the axial compression ratio is bigger, bearing capacity is higher, but ductility is decreased. This kind of wall has good property of seismic resistance, and has good energy-dissipation (deformation) capability after yield. Side column reinforcement and axial compression ratio are main factors influence the deformation capability of the concrete lattice wall.