Abstract:
The vertical joint is the key part of assembled shear wall structures. In this paper, the fragility analysis of 57 full-scale assembled shear wall test data with vertical joints is carried out. According to the failure mode of the test process of this kind of shear wall members, five damage states are proposed. Taking the drift angle as the engineering demand parameter, the fragility curve of this kind of shear wall and the fragility parameters under each damage state are established. The influence of two key design parameters, axial force ratio and shear-span ratio, on the fragility was quantitatively evaluated. The influence of two vertical joint forms of direct splicing and post-pouring belt splicing on the fragility parameters of this kind of specimens was compared and analyzed. The results show that, except for the concrete slag in the vertical joints and the protective layer in the compression area falling off slightly, the fragility curves in other damage states basically follow the logarithmic normal distribution. The fragility parameters between the direct spliced fabricated shear wall and the post-cast strip spliced fabricated shear wall are different in the vertical joint concrete joint surface cracking and the edge longitudinal reinforcement yield damage stage. The absolute difference and relative difference of the corresponding displacement angle fitting median value in this stage reach 0.11 % and 28.2 %, respectively.