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Title |
Flexural Performance Evaluation of Partially Encased Composite Beams with Replaceable Slit Bolt Connection
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Authors |
김민숙(Min Sook Kim) ; 이영학(Young Hak Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.1.093 |
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Keywords |
부분합성보; 접합부; 프리캐스트 콘크리트; 휨거동 partially encased composite beam; joint; precast concrete; flexural behavior |
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Abstract |
This study investigates the flexural performance of Partially Encased Composite (PEC) beams integrated with replaceable steel joints, specifically designed to facilitate efficient installation, disassembly, and reinstallation. Five specimens were tested, comprising one monolithic beam without joints and four beams equipped with steel joints that varied in bolt type and slit configurations. Flexural tests revealed that beams with steel joints achieved approximately 49?63 % of the maximum load capacity of the monolithic beam. Among these, specimens incorporating high-strength bolts and slit-applied joints demonstrated superior maximum load capacities compared to those utilizing conventional threaded bolts or lacking slit configurations. Furthermore, the energy dissipation capacity of the jointed specimens reached approximately 55 % of that observed in the monolithic beam. These findings underscore the potential of the proposed joint system for practical applications, balancing structural performance with reusability and ease of assembly.
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