Experimental Study on Shear Mechanical Properties of Light Composite Bridge in Bending Moment Zone

This study conducted shear resistance tests on steel-UHPC composite beams, focusing on structural stiffness changes during the test process, strain analysis of UHPC panels, internal reinforcement bars, steel structures, and shear connectors, as well as the failure processes and modes of UHPC panels and the structure. Through theoretical analysis, the contribution of UHPC panels to the overall vertical shear resistance capability was clarified. A shear load-bearing capacity calculation method was established, thereby considering the combined beam shear bearing capacity calculation formula of the UHPC panel and the steel beam web.