Improved fiber element model and its application in seismic performance research of reinforced concrete block shear wall

In order to research the seismic performance of reinforced concrete block shear walls (RCBSW), this paper has developed a new fiber element model that considers the elastic-plastic shear deformation. The comparison between experimental results and simulation results of 6 RCBSW organized under the same conditions shows that this new fiber element can preferably simulate the hysteretic performance of RCBSW. Although the ordinary fiber element model is still suitable to simulate the hysteretic performance of RCBSW conditionally, it brings on better results for this new fiber element. Based on the above research, after some numerical simulation on uniform design experimentation method, a series of empirical formulas of characteristic parameter of a kind of RCBSW is induced and the hysteretic model for elastic-plastic seismic response analysis of this kind of RCBSW is proposed.