| Title |
Structural Performance Evaluation of Precast SRC Columns Using Modular Steel Box Connectors |
| Authors |
박진호(Park, Jin Ho) ; 김민숙(Kim, Min Sook) ; 이영학(Lee, Young Hak) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.2.397 |
| Keywords |
Precast Column; Steel Reinforced Concrete (SRC); Dry Mechanical Connection; Axial Load Ratio |
| Abstract |
This study presents a dry-type bolted connection system for precast steel-reinforced concrete (SRC) columns and investigates its cyclic lateral
performance. The system consists of a Steel Connecting Block (SCB) and a Steel Reinforcing Core Unit (SRCU) and is intended for factory
prefabrication and on-site assembly using only bolted joints. Three full-scale specimens were tested: one monolithic column (SCB-C) and two
precast columns (SCB-HA and SCB-HB) subjected to different axial loads. Specimen SCB-HA exhibited shear cracking and concrete spalling
but achieved approximately 85 percent of the monolithic strength with comparable energy dissipation, demonstrating the effectiveness of the
connection. Specimen SCB-HB reached 95 percent of the monolithic peak load but failed at a 1.75 percent drift due to brittle fracture.
Overall, the results indicate that the proposed SCB-SRCU system provides structural continuity and sufficient stiffness while improving
constructability and reusability for modular construction. |