Cable-stayed Bridge Construction Control Analysis And Research

With the continuous improvement of the theory of bridge design and construction process, the design of span bridge has become a target at home and abroad. The cable-stayed bridge has became the darling of the bridge designers, because of whose beauty type and force uniform and more stable structure. But the cable-stayed bridge is a higher indeterminate statically structure, during the construction phase, the both of structure system and the load state are constantly changing,the structure internal force and linear are also change, therefore, the cable-stayed bridge construction failures are abound. So, how to effectively control the construction of cable-stayed bridge, has broadly been a international subject.Base on the basic methods to control the cable-stayed bridge construction, the thesis establishes a perfect control system. Using the effective control methods of Construction, and combining with the FEM theory of calculation and analysis. It establishes the control model of a real bridge utilizing the MIDAS software, simulates the construction process of the real bridge and implements predictive control for structural deformation, stress, and stability using the positive sequence installation, which is one of the control methods of Construction.In the control of bridge construction, the positive sequence installation is accurate, convenient and effective, The results based on it are able to direct the designers achieving predictive control in the process of cable-stayed bridge construction during the design stage, and ensures that the structure's force and deformation are always in the safe rage during the process of construction, meets the design requirements of main beam alignment after the completion of bridge, and the structure is the best stress state.