Experimental and Numerical Analysis of a Temporary Bridge Connector Consisting of an Upper Bearing Block–Lower Pin Configuration

• Published in: Applied sciences 2024-03, Vol.14 (5), p.2012
• Main Authors: Jang, Hong-Lae, Han, Chae-Hee, Kim, Ri-Ha, Park, Dae-Youl, Kim, Sung-Yong
• Format: Article
• Language: English
• Subjects: Analysis; Automation; beam splice; Bridges; connections; Connectors; Construction costs; Design; Flanges; girder; Load; moment connection; Numerical analysis; Onsite; Optimization techniques; rapid construction; Seismic engineering; Stress concentration; Yield stress
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app14052012

In this study, the structural details of a hinge connection for steel girder segments were developed to improve the process of rapid and easy construction. In the connector developed in this study (referred to as the “speedBridge” hereafter), the compression load exerted on the upper flange is resisted by two bearing blocks in contact with each other, and the tensile force on the bottom flange is resisted by the hinge structure installed at the lower part of the steel girder. The structural behavior of the developed connection was investigated experimentally. It was shown that the developed connection details could develop an excellent connection plastic rotation of 5% rad without fracture. The test specimen developed initial stiffness in accordance with elementary beam theory for a supported beam. The maximum load reached 110% of the plastic moment of the beam. Finite element analysis was conducted to comprehend the load transfer path, and the results demonstrated that the hinge connection exhibited sufficient stiffness and strength, exceeding the bending capacity of the beam under tension without any signs of the failure modes considered in the design procedure.