Experimental Study and In-depth Tensile Mechanism Analysis of Grouted Sleeve Lapping Conectors

To study the failure modes, bearing capacity, ductility, and sleeve strain of grouted lapping connectors, 36 specimens were tested under uniaxial tensile load. The test results show that sleeves are longitudinal tension at beginning, which changes to compression in late stage loading, changing load increases gradually with lap length. force transmission path mechanical mechanism connectors analyzed. distribution development process stress is analyzed based on constitutive model stress, it found from loading stage, consistent results. Based test, calculation formulas ultimate bond strength critical length connector proposed. research lay a theoretical foundation for application connectors.