In order to apply a mechanical deck joint to the prefabricated steel gird composite decks, shear resistance of a joint composed of concrete shear key and high-tension bolt is experimentally evaluated by the push-out test. In comparison with resistances estimated by empirical and design equations, the deck joint can be safely designed. But because the existed shear resistance of deck joint is underestimated by the ACI-318, application of the LRFD design equation could be more reasonable.

• 신현섭(한국건설기술연구원 인프라구조연구실 수석연구원, 공학박사) | Shin, Hyun Seop 교신저자
• 박기태(한국건설기술연구원 인프라구조연구실 연구위원, 공학박사) | Park, Ki Tae