To improve construction efficiency and fully leverage the assembly advantages of prefabricated structures,a dry connection method for prefabricated RC-coupled shear walls is proposed.This method uses high-strength bolts and pre-embedded connection steel plates to achieve rapid dry connection at the gap between the coupling beams of the coupled shear walls.To study the seismic performance of prefabricated coupled shear walls connected by dry connection,1 cast-in-place wall and 1 prefabricated coupled shear walls were designed and tested under low-cycle repeated loading.The results indicate that the dry connection joints can transmit the interaction forces between prefabricated coupled shear walls,achieving the performance objectives of"strong wall limbs and weak coupling beams";The hysteresis characteristics of the dry-connected prefabricated coupled wall are like those of the cast-in-place coupled wall,with similar initial elastic stiffness.However,the deformation of the joints leads to a decrease in the stiffness and bearing capacity of the wall,but its deformation and energy dissipation capacity are stronger.Based on the experimental results,the proposed method for calculating the bearing capacity of prefabricated RC-coupled walls with dry connection reflects the force transmission characteristics of dry connection joints and can be used for the analysis and design of this connection form.
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