Study on the shear capacity of PBH shear connector basing on PBL shear connector
FAN Liang1,2, ZHOU Zhixiang2
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 174-180
1State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing, China
2Chongqing Jiaotong University, Chongqing, China
According to the structural characteristics of steel box-concrete composite structure, a new type of shear connector with Perfobond hoop is proposed basing on PBL shear connector (Perfobond Hoop, PBH in short). PBH shear connector is composed of stiffening rib and stirrup, the joint work of steel box and concrete is realized without adding any special connection construction. Push out test of the PBL and PBH were performed, results show that the shear capacity and shear stiffness of PBH are higher than that of the PBL; multi-parameters effect on the mechanical behaviour and the shear capacity of PHB were analysed using FEM analysis in terms of the concrete strength, the perforation diameter and so on; on the basis of the test and analysis, three failure modes of PBH were concluded, the construction requirements were proposed to avoid the welding shear failure and compression buckling of the perforated stiffening rib, and the shear capacity formula of PBH was established according to the fracture or large deformation of the steel concrete tenon.