Load Reaction Analysis Of The Girder Of YongAn Bridge During Construction Procedure

Construction procedure calculations are important parts of the design of cable-stayed bridges. In order to construct the bridges successfully, an exact analysis must be carried out in every construction step.YongAn Bridge is a cable-stayed bridge of tri-tower with single cable plane. Integral cast-in-place construction on form board method is used in construction. During construction procedure, the stressing of diaphragm beams' tendons and the tensioning of cables interact, the contacting nonlinear issues between girder and form plate etc, which require detailed analysis, arrange the orders and quantities of the stressing of the cables and tendons properly, and guide the construction.The paper, by making plane model and spacial model of YongAn Bridge ,calculated the pre-closure cable forces (aim forces) with plane element program, with the help of applied structure analysis program-ANSYS, acquired the reasonable construction steps of tensioning of tendons and cables.