Experimental study on ultimate state of steel arch bridge column joints

Abstract

A static cyclic loading test on scaled specimens was conducted to evaluate the limit state of the column joints of steel arch bridges. The specimens were set based on existing arch bridges, and the joints were made by welding and highstrength bolt friction joints. In the experiments, stable load-displacement curves were obtained, and the vertical support force after damage was confirmed. In the experiment of high-strength bolt friction joints, the phenomenon of bolt axial force loss and fracture of bolt hole were confirmed. Also, the experiment was validated by FE analysis modeling the high-strength bolt friction joint.