Open AccessBehaviour of Precast Concrete Beam-to-Column Connection with SHS Hidden Corbel Subjected to Monotonic Load
Author(s) -
Jen Hua Ling,
Jae Han Lim,
Atiqur Rahman
Publication year - 2021
Publication title -
journal of the civil engineering forum
Language(s) - English
Resource type - Journals
eISSN - 2581-1037
pISSN - 2549-5925
DOI - 10.22146/jcef.62930
Subject(s) - precast concrete , connection (principal bundle) , structural engineering , stiffness , beam (structure) , materials science , moment (physics) , rotation (mathematics) , column (typography) , composite material , engineering , mathematics , geometry , physics , classical mechanics
Beam-to-column connection is the most critical part of a precast concrete (PC) structure as it governs the integrity of the entire structure. In this study, a beam-to-column connection with square hollow section (SHS) hidden corbel was developed. A full-scale test was conducted on eleven T-subframe specimens with various configurations to investigate the behaviour of the connection under an incremental static load. The behaviour of the connection was evaluated in terms of the moment-rotation response and the mechanical properties were obtained by using the beam-line method. Due to the extensive usage of steel elements, the PC connect possessed a higher ultimate strength than the reinforced concrete (RC) connection. The moment resistance of the connection was largely contributed to by the hidden corbel embedded in the beam and column. However, the PC connection gave a lower stiffness, which resulted in a larger rotation deformation than the RC connection, and thus lowered its design strength. The PC connection was classified as semi-rigid and partial strength, and only specimen PC-3 was considered feasible for PC structures.