Tests And Nonlinear Analysis Of High-strength Concrete Shear Wall

The high-strength concrete (HSC) shear wall can efficiently make the weight of building lower, so it reduces the earthquake action and the cost of the buildings. Since this characteristic is beneficial to the high-buildings, the HSC shear wall plays an important role in the high-building. The seismic peformace of HSC shear wall is not so explicit. Now, the following work had been done about this:(1) Four specimen walls were tested under constant vertical load and slow cyclic horizontal load to investigate the seismic behavior of HSC shear walls. The influence of the amount and range of confinement reinforcement, and the axial load level on the load-deformation response of the HSC shear walls have been explored deeply. With the amount and range of confinement reinforcement increases, the ductility will increase.(2) A macro model-based finite element program (IDARC) which employs Kunnath's macro-model to simulate the shear wall, has been used to simulate the hysteretic curves of HSC shear walls, and results from it have been compared with experimental results. The influence of the axial load level, the ratio of height-to-width, the vertical reinforcement ratio of edge column, the horizontal reinforcement ratio of the web and the vertical reinforcement ratio of the web had been done by employed program IDARC. The result of Analysis by Kunnath's Spread-plasticity model contrast finely with concentrated-plasticity model.By using the Kunnath's macro-model to simulate the HSC shear wall, it could find that the analytical results agrees with the the experimental from the experimental and analytical researches on HSC shear walls. And draw the some conclusions by changing the level of axial load, the height-to-width ratio, the vertical reinforcement ratio of edge column, the vertical reinforcement ratio of the web and the horizontal reinforcement ratio of the web.