Experimental Study On Seismic Behavior Of High-strength Concrete Low Shear Walls With Concealed Bracings

High-strength concrete structures, with rising height and floors of high-rise buildings, become a trend. They not only have the advantages of ordinary steel reinforced concrete structures such as high load-bearing capacity and high rigidity, but also can reduce the section of the members effectively, lighten the weight of the structure, increase the height and span of the building, enlarge the available space and improve the economic interest. These merits bring the high-strength concrete structures more promising in application and have more significance in research.It's illustrated from many earthquake disasters that shear wall is a better type of construction to resist earthquake. As the shear wall is the most widely used structure of high-rise building, the study of shear wall for seismic performance is particularly important. The application of high-strength concrete in the shear wall, makes the research on seismic performance of shear wall urgent, but there are still few researches on its seismic behavior both at home and abroad in the present.This paper focuses on the mechanism of shear bearing capacity and failure pattern of high-strength concrete low shear walls with concealed bracings under low cyclic reversed horizontal load. A detailed description of the test process and a preliminary analysis are given. The seismic behavior of the shear wall is analyzed. At the same time, the ductility, the energy dissipation capacity, strength deterioration and stiffness deterioration are studied. Based on the experimental research, the simplified mechanical model is established, and the calculative formulas of the bearing capacity is established and contrasted. In the end, seismic design suggestions for shear wall with concealed is presented.