Experimental Investigation on Shear Resistance Property of ASR-PBL Connectors

To tackle the challenges posed by the unsuitability of traditional perfobond leiste (PBL) connectors for prefabricated steel–concrete structures and the reduction in deformation capacity observed when utilized with high-strength cementitious materials, assembled perfobond leiste connectors with steel-rubber tenon (ASR-PBL connectors) is proposed. Based on the varying tenon configurations, three groups of nine specimens were designed for the push-out test. Additionally, an investigation into the load–slip curves, damage patterns, and the shear influencing parameters of ASR-PBL connectors was conducted utilizing finite element methods. The results reveal that the shear stiffness and shear capacity of assembled perfobond leiste connectors with steel ring tenon (AS-PBL connectors), exhibit an increase of 99.6% and 11.4%, compared to the assembled PBL connectors with concrete tenon (A-PBL connectors), and a 52.7% reduction in shear stiffness of ASR-PBL connectors compared to AS-PBL connectors are observed, concurrent with a significant increase in the deformation capacity of the connectors is shown. Last, utilizing multiple regression analysis and the elastic foundation beam theory, the formula for calculating the shear capacity and shear stiffness of ASR-PBL connectors were proposed, respectively. ASR-PBL connectors has excellent shear resistance and deformation capacity, promoting the PBL connectors in steel–concrete composite structure construction engineering.