Study On Construction Control Technology Of Xijiang Dong Bridge

In the country to vigorously promote the traffic construction in our country the process of urbanization and the rapid development, at the same time with the main direction of development to advance from the eastern coastal areas to inland, the difficulty of construction is also increasing, the construction conditions are more complex, how in this environment to build greater span, more economic reasonable prestressed concrete continuous rigid frame bridge has become a vast construction personnel and researchers face the common problem. With the gradual promotion of the construction control technology, this problem is solved. But this kind of bridge is usually complicated construction process of large span bridge construction, the long cycle time. How to ensure the quality of construction quality and post operational phase is particularly important in such a time span.In the process of Prestressed Continuous Rigid Frame Bridge in construction the main problem is, bridge construction stages during each construction stage will have an impact on the structure and construction has become the subsequent stages, this effect will make the actual structure internal force, the deformation value and theoretical value in some errors, the error will be accumulated to a certain extent the whole bridge structure caused irreversible damage, make the construction can not be successfully to continue, or let the finished bridge state and the design requirements far, have not reached the design requirements.According to the problems mentioned above, this article from the characteristics and development of prestressed concrete continuous rigid frame bridge, began to introduce how to bridge construction control play an important role in the construction of Prestressed Continuous Rigid Frame Bridge in. Mainly introduces the method of bridge construction control and classification, modeling and analysis method of the prestressed continuous rigid frame bridge. This paper is based on the Yunnan West Wuding hole bridge as the engineering background, using Dr. bridge calculation method of V3.0 modeling analysis using formal. The calculation of parameters at the same time field test structure design, through the analysis of the model sensitivity of these variables. For sensitive parameters identified to add observation dynamics in the actual construction control, timely the error correction, and give feedback to the design units and the construction units, let them make the corresponding adjustment, to ensure the safety and reliability of the whole construction process, also let bridge finished state of the bridge meet the design requirements of the department.In the monitoring process of construction specific implementation West hole bridge, introduces the significance of construction monitoring, and the layout method of introduction of instruments and equipment are involved in this paper and the construction monitoring measurement points and position required. Collect the relevant analysis of the data needed, and data processing with a scientific and rational way.Based on the measured data and model analysis of control field data of the West tunnel bridge construction obtained theoretical results are compared and analyzed, mainly is aims at the stress and degree of error between the linear change, to ensure the bridge construction in the controllable range, at the same time to ensure the follow-up operation and can meet the design requirements.