Abstract
In this, the second part of two companion papers, three-dimensional finite-element modelling of the shear load tests is presented and the shear bearing behaviour of the cross-plate joints is predicted. The isotropic damage plasticity model is adopted to model the non-linear behaviour of concrete and the interface, and the quasi-static load test process is approximately simulated with an explicit technique employing an artificial timestep to decrease the kinetic energy. The numerical analysis method is verified using the experimental results presented in the first part of the two companion papers, and the shear behaviour and shear bearing capacity of the cross-plate joints are evaluated numerically. The numerical results and parametric study reveal the load-bearing mechanism and failure modes of the joints. By introducing a correction coefficient considering the effect of the hole ratio in the longitudinal plate and based on the analytical expression for the ultimate shear load of perfobond connectors, a new and modified prediction formula for the shear bearing capacity of cross-plate joints is proposed. The close correlation of the prediction formula with the numerical and experimental results demonstrates that the proposed formula is reliable for predicting the ultimate shear load of cross-plate joints.
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