Experimental Study of Static Force on Cable-Girder Anchorage of Cable-Stayed Bridge

The cable-girder anchorage zone of a cable-stayed bridge bears giant cable forces and has a complicated structure. The anchorage is the key of the structure design. By taking the static force tests of cable-girder anchorage of Wu Su Bridge of HeiXiaZi Island as the research object, the full scale model test of the cable-girder anchorage zone that is box-shaped was carried out. The key issues such as the design method of test model, load transfer path and stress distribution of main components are investigated through theoretical study and model testing. The result indicated that the weld of steel girder and box-shaped anchorage have a specific force translation, and the higher stress level on weld between the bearing slab and main girder web. The cable-girder anchorage has a well property and adequate safety reserve. However, the stress concentrations on some plates should be paid more attention in the design.