Performance Analysis Of Zw Shear Wall Under Low Cyclic Loading Based On Ansys

In this paper, it is carried out a cyclic loading test on two full-scale specimens, with different grid bar diameter and different wall-side ribs. It shows steel truss can support and connect both concrete slabs, and there is no separation but coordination of ZW shear wall. Simultaneously, the destruction of the whole process is explored and the shear behavior is analyzed.Based on the test analysis, this thesis builds the analysis model of the ZW shearing wall. In the model, it uses SOLID65 unit with multi-linear isotropic hardening model (MISO) to simulate the concrete, the LINK8 unit, with bilinear kinematic hardening model BKIN is assigned to the bar. Compared to the test results, the simulation results accorded with the test value well and the correctness of the analysis model has testified.On the basis of the model and analysis above, parameters were expanded. Different concrete strength, different grid bar diameter and wall-side ribs were discussed by building four new analysis models. With different parameters, the hysteresis curve, skeleton curve, ductility and stiffness degradation were studied. It is discussed the affect of these parameters on the shear performance of ZW wall.When bar diameter fromΦl5 ? intoΦl7, the shear capacity of specimens also increased to 352kN from 284kN. The rope-shaped hysteresis curve shows that the latter can withstand repeated loading and unloading more frequently, post a larger total deformation, better ductility, and the stiffness degradation was improved.The specimens of the ultimate shear capacity increased by 30% when the concrete strength level was from the C20 up to C30. Before reaching the ultimate load, the both displayed roughly similar performance, with the improvement of concrete strength, the stiffness degradation has a certain delay.Judging from the skeleton curve, the wall with wall-side ribs and the wall without it were the same in ascending phase, the difference was the ultimate load value and characteristics in descending. The ultimate load fell about 60kN when there were no ribs. And the load began to decrease after the displacement significantly increased. It argued that benzene plate and concrete layer had a slip junction the wall rips delayed the development of cracks, which also slow down the stiffness degradation.