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Title |
Study on the Shape of a Longitudinal Joint of the Slab-type Precast Modular Bridges
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Authors |
이상윤 ; 송재준 ; 김형열 ; 이영호 ; 이정미 |
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Keywords |
프리캐스트 ; 슬래브 교량 ; 모듈러교량 ; 연결부 ; 전단키 ; Precast ; Slab bridge ; Modular bridge ; Joint ; Shear key |
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Abstract |
In this study, a longitudinal joint connection was proposed for the short-span slab-type precast modular bridges with rapid construction. The slab-type modular bridge consists of a number of precast slab modules and has the joint connection between the modules in the longitudinal direction of the bridge. The finite element based parameter analysis and the push-out test were conducted to design the shape and the dimensions of the longitudinal joint connection. Number of shear keys within the joint, height and depth of the shear key, tooth angle, and the spacing were considered as the design parameters. Using the local cracking load obtained from the analytical and experimental results, an efficiency factor was proposed to evaluate the effectiveness of the longitudinal joint connection. The dimensions of shear key were determined by comparing the efficiency factors.
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