The Mechanical Analysis Of T Girder In Structure System Transform

Modern time all the highway bridge need high quality. Namely, have good continuity, less expansion joints, and we can drive more fast, more calm and more comfortable. The simply supported beam is a simply structure, and can be constructed easily, but the bridge deck also can cracking easily and become curved surface, so we cann't drive too fast on the bridge. The continuous bridge have small deformation,big rigidity,less expansion joints,driving comfortable and good aseismatic, sometimes it is the best choice in all the bridge types, but at present the construction method is cantilever method or ally arm method, cann't construct in batches. So people always want to combine the strongpoint of simply supported beam and continuous beam to bring a new bridge type. The structure system transform method emerge as the times require, it have all the strongpoint of the two bridge types and become more and more popular with bridge engineers.The structure system transform method spring up in recent years, there are some question we must attached importance to. The mostly content in the article is analyzing the structure system transform method by emulation program, such as Doctor.Bridge v3.0,MADIS/Civil6.7.0. At the same time, we research some important problem in construction, for example: the sequence of construction of joint; the sequence of dismantle of temporary bearing; the new way of connection mode of joint by prestress. In the end we get some conclusion: the best construction method of joint is symmetry constructing, and wo can use alternation construction important for picking up construction; the sequence of dismantle of temporary bearing fellow the same rule; the new connection mode of joint get an advantage over the tradition method.I think more and more analysis theory will be appeared by developing technology, the method must be more nicety and more advanced. It will bring big economic efficiency and social efficiency to our country.