Flexural Behavior of Precast Concrete Column-Column Joint with Bolt-Plate Connection

Abstract

This research investigated the flexural behavior of precast concrete column-to-column joints utilizing a bolt-plate connection system to enhance both structural performance and construction efficiency. Experimental flexural tests were conducted on Three different joint configurations, including strong and weak-axis orientations with bolt-plate connections and a conventional joint for comparison. The study aimed to evaluate key performance parameters such as ultimate flexural strength, stiffness characteristics, and failure mechanisms under controlled loading conditions using four-point bending tests. The findings indicated that the bolt-plate connection system resulted in approximately a 65% reduction in moment capacity and a 95% decrease in stiffness compared to conventional joints. Despite these reductions, the bolt-plate connections exhibited sufficient structural performance for practical applications. The results provided valuable insights into the structural behavior of bolt-plate connections and highlighted their limitations in terms of flexural strength and stiffness. The study’s findings contribute to the development of practical design guidelines for optimizing the implementation of bolt-plate connections in modern precast concrete structures, supporting efforts to enhance sustainability and streamline construction processes.