The Calculation Of Construction Control In Prestressed Concrete Continuous Girder Bridge

As an important part of bridge construction technique, bridge construction is the key factors to ensure security and stability of bridge structure in the process of construction. At present, the prestressed concrete continuous girder bridge has been widely used all over the world because of the large spanning capacity, flexible construction method, strong adaptability, large stiffness, strong ability to resist earthquake, traffic smoothness and aesthetically pleasing etc. Taking the prestressed concrete continuous girder bridge of the ballasted track as an example and utilizing powerful secondary development function of ANSYS, the article successfully complete the whole process of the bridge construction control, and develope the graphical interface and construction procedures to adapt to the continuous girder bridge.Based on the method to describe the creep characteristics of concrete and the calculation theory,the paper develop the secondary function of ANSYS, in order to consider the influence of the concrete creep and reinforcement characteristics.First, using the secondary development tools, combined with TCL/TK programming language, the paper compiled the graphical interface and construction procedures to be suitable for continuous beam.Then, based on the specification and expressions of concrete creep properties both in China and abroad,the paper develop the calculation module of creep effect in continuous girder bridge, and consider the influence of creep in the concrete continuous beam. Finally, using APDL in the secondary development tool ANSYS, it can realize the calculation and analysis for the achievement of the module function.