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Title |
Experimental Verification of Precast Segment Connection Using Rotational Connectors
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Authors |
김창수(Chang-Su Kim) ; 노정휘(Jung-Hwi Noh) ; 김호영(Ho-Young Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2024.36.2.101 |
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Keywords |
프리캐스트 부재; 수직구; 회전연결재; bow-tie 형식; loop 형식 precast segments; vertical shafts; rotational connector; bow-tie type; loop type |
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Abstract |
The use of precast concrete (PC) members is steadily increasing compared to cast-in-place (CIP) concrete, and the performance of joints is paramount when designing structures with PC elements. In the case of structures such as retaining walls, the use of PC segments is on the rise, and yet there remains a lack of suitable solutions for instances requiring simultaneous vertical and horizontal connections. In particular, the installation of PC members is necessary in tunnel projects, where vertical shafts must be quickly completed during the final stages of construction. Our work assessed the performance of vertical shaft connections through the utilization of the rotational connection method, which efficiently improves workability while maintaining connection performance. Various rotational connector details (such as bow-tie and loop types) were designed and presented, followed by a comparative review of the performance of the CIP and PC member connections. To evaluate the actual performance of these connection details, element-level loading experiments were conducted.
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