Precast reinforced concrete demountable system of multi-storey buildings

The paper presents the results of static and dynamic tests of major joints of load-bearing precast reinforced concrete units-a "column-girder" joint, "wall-wall" joint, "column-column (or pillar, wall) joint" with controlled stiffness. The most demanding type of joints in demountable systems with dry joints are the joints of floor units whose main function is to create a rigid floor plate ensuring the redistribution of horizontal effects onto vertical load-bearing members, among others, in relation to their stiffness. Three alternative versions of floor unit joints and the behaviour of a two-storey experimental prototype with a demountable floor plate under alternating loading with a monotonously rising horizontal force and dynamic loading were verified within theoretical and experimental research.