In order to research the influence of different shear span ratio and different forms of boundary construction on the seismic performance of high-strength recycled concrete shear walls with high-strength longitudinal bars in boundary elements,the cyclic load tests of three C50 recycled concrete shear walls were carried out,including one cast-in-place high-rise shear wall,one cast-in-place mid-rise shear wall and one prefabricated mid-rise shear wall.The failure pattern,hysteresis performance,bearing capacity,ductility,stiffness degradation,energy dissipation capacity of each specimen were analyzed.The results show that the failure pattern of high-strength recycled concrete shear walls with high-strength longitudinal bars in boundary elements are mainly bending failure,and the hysteretic curves of all specimens were full,and the energy dissipation capacity is good.Compared with high-rise shear wall,bearing capacity and stiffness of the mid-rise shear wall are significantly increased,but the ductility coefficient is reduced.The prefabricated recycled concrete mid-rise shear wall has a good integrity before reaching the peak load,however,due to the relatively weak bond strength of the bonding surface,the specimen failed earlier,the bearing capacity decreased faster and the ductility is slightly poor.Based on the test results,the bearing capacity formula of high-strength recycled concrete mid-rise and high-rise shear walls with high-strength longitudinal bars in boundary element was established,and the calculated results are in good agreement with the test results.
NETL
NSTL
维普
万方数据
