Experimental study on seismic performance of resilient assembled high-strength recycled concrete shear walls
In order to promote the application of high-strength recycled concrete members in resilient building structures,an assembled high-strength recycled concrete shear wall with boundary elements configured weakly bonded ultra-high strength longitudinal bars was proposed.Low-cycle loading tests of four assembled high-strength recycled concrete shear wall with shear span ratio of 2.2 were carried out.The seismic and resilient indexes of assembled high-strength recycled concrete shear wall with weakly bonded ultra-high strength longitudinal bars and with or without steel fibers in the walls were analyzed,including damage mode,hysteretic performance,stiffness degradation,residual deformation and crack width.The results show that under large deformation,the horizontal bearing capacity of assembled high-strength recycled concrete shear wall with weakly bonded ultra-high strength longitudinal bars increases continuously with slightly concrete damage,the lateral stiffness degrade slowly,and the residual deformation and crack width are small.Based on the results of the experiments,the method for calculating the seismic bearing capacity of resilient assembled high-strength recycled concrete shear walls under the condition of 1%horizontal drift ratio was recommended,and the calculated results is in good agreement with the experimental results.
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