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In order to provide the mechanical properties and seismic performance of CLT shear walls to which tensile bolted joints and screwed steel joints were applied for vertical restraint, cyclic lateral loading tests and pseudo-dynamic tests were conducted on 3-ply sugi CLT shear walls. Moreover, the analytical model was validated by comparing the time-history earthquake response analysis and pseudo-dynamic test results for these types of shear walls. The relation between the magnitude of input ground motion and the horizontal displacement response was investigated by conducting time-history earthquake response analysis on several earthquake records and artificial waves with variable magnitude of input ground motion. Also, the possibility of replacing the tensile bolted joints by screwed steel joints was discussed. The yield strength and the maximum strength of shear walls with screwed joints were 20% higher than those with tensile bolts in the cyclic lateral loading tests. With the same seismic wave input in the pseudo-dynamic tests, the maximum response displacements of screwed joint specimens were smaller than those of tensile bolt specimens. Furthermore, the response displacement of earthquake response analysis showed good agreement with pseudo-dynamic test results. It is suggested that CLT shear walls with screwed steel joints give enough performance compared to shear walls with tensile bolt joints.

Seismic Behavior of CLT Shear Walls Connected with Tensile Bolted Joints and Screwed Steel Joints