Abstract:With the maturity of bridge construction technology, the rotary T-frame bridges have gradually become an important type of bridge construction. The rotary construction technology can make the bridge more quickly and easily to cross some existing architectural and environmental factors, without affecting its normal use during the construction process. At present, the most suitable construction method is the form traveler cantilever construction. However, sometimes due to the tight schedule or other uncontrollable factors, it is impossible to use this method. At the moment, other construction methods should be considered. In order to meet the schedule requirements of the 2×116 m T-frame of interchange project overpassing Qingdao - Yancheng Railway and Jiaozhou - Huangdao Railway in Provincial Highway 219, a bracket system combined with disc buckle bracket and a beam column bracket is proposed for construction. A calculation model of temporary bracket of the bridge is established by using the finite element analysis software Midas/Civil to simulate the overall stress of the bridge and to analyze the stress of each material of the bracket, and the strength, stiffness and stability of the materials. The corresponding conclusion about the feasibility of the cast-in-place bracket is given.
