Numerical study on the behaviour of an innovative concrete dry joint: Investigations under shear loading

The savings in time and resources by fast erection as well as possibilities to disassemble and flexible conversion of buildings motivate the increasing demand for modular construction. The rapid and precise joining of precast concrete components is essential to benefit from the advantages of the modular construction method. To establish load-carrying joints, a shear connection is adapted from carpentry resulting in a concrete mortise in conjunction with a steel tenon. In this paper, results of numerical investigations on the structural behaviour of the developed joint under shear loading are presented. The form of the tenon is investigated in two-dimensional simulations. To ensure high manufacturing accuracies and full-surface contact between the steel tenon and the concrete mortise, 3d-printed plastic moulds are used. Hence, in this first step, the conceptual functionality of the developed dry joint is shown.