Design method Considering of Shear transfer Elements in Precast Concrete Connections

摘要

Shear transfer across a definite interface must frequently be considered in the design of precast concrete connections. As the following various resistances in the effecting shear transfer strength are given: (1) dowel action, (2) shear-key, (3) friction with axial force, (4) adherence on the concrete surface. The purpose of this paper is to reveal the compound effects of the various resistance elements. Basic experiments on the interface shear transfer at the precast joint faces were carried out. Ten panel type specimens with the same dimensions were tested. As the conclusion, the relation of the shear transfer mechanism and shear displacement behaviour in the concrete connection is clarified. Also the evaluation equation of the shear transfer strength with consideration to the shear displacement conformity is proposed.