The Study Of Construction Monitoring On Continuous Rigid Frame Bridge With High Transition Pier

With the development of mountainous district traffic enterprise in western of our country, the high-pier continuous rigid-frame bridge has been applied widly for complex topography, handy construction and economical cost. In some areas, effecting of terrain, it is built high not only the main pier but also the trainsition pier, some even exceed 100m. To the continous rigid frame bridge with high transition pier, if the side span cast-in-place section is placemented with supporter, the construction technology is very difficulty, the cost is very high and the construction date is long. Given this, it is used main girder cantilever asymmetric construction. The special construction monitoring system is researched in this paper.Combining with the project of TangXiHe bridge, the stress and displacement of continous rigid frame bridge with high transition pier are analyzed diffirence construction technology of placement the side span cast-inplace section. Then determine the reasonable construction scheme and clarifies the construction monitoring is effected by construction technology. The date of model calculation is analyzed and copared with the measurement date of placement the side span cast-in-place section. Some conclusions can be referenced by similar structure's construction.On application of forward-calculation method and adaptive control system, the theoretical calculation result of structure stress and alignment are analyzed danf copared with the measurement date during TangXiHe bridge construction .Then find out the cause of errors, identify and adjust the design parameters. It is traking analysis the key construction conditions, so that the construction of TangXiHe bridge is effectively controlled.