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Title |
An Experimental Study on Shear and Rotation Stiffness in the Connection Parts of Shores
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Authors |
곽순섭 ; 김호수 ; 정성진 ; 홍건호 ; 이경은 |
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Keywords |
동바리 연결부; 전단 및 회전강성; 못의 긴결방법; 시공현황; 좌굴하중 평가; connection part of shore; shear and rotation stiffness; tied method of nail; construction situation; critical load evaluation |
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Abstract |
During concrete placement, the partially distributed load due to the concrete placement paths creates the lateral force in the connection parts of the shore. In order to restrain this lateral force, the nails must be used in the upper and lower connection parts of shores. But, for the convenience of the construction and dismantling of the shores, the workers hardly use the nails. In this case, the connections of shore cannot resist the shear force and rotation. And this situation may cause the collapse of form-shore system. Therefore, contact and spring models for the connection analysis of the form-shore systems are required. If we take into account this construction situation, we need to understand the effects of shear and rotation stiffness according to the several types of connection parts in shores as a case study. This study evaluates the shear and rotation stiffness of the connection parts of shores according to the variations of the lengths, numbers and positions of nails, and then presents the experimental results depending on the end conditions of shores. And, these results can be used as a spring model and critical load evaluation data for the connection analysis of form-shore system.
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