Airport Taxiway Project Of Rail Transit Line Three He Evaluation Interval Viaduct Structure Safety Influence

With the city’s rapid expansion and congestion problems have become increasingly serious, the development of rail transit construction throughout the country is very rapid. But the rail traffic is usually constructed in urban main road. The other construction activities of the city will inevitably affect the structure of rail transit facilities and operation safety. This paper takes safety impact assessment of ChongQing airport contact road interchange construction to rail transit line no. 3 interval viaduct and the station structure as the main content, The selected topic has the important value of engineering application. This article mainly contains:① According to the location relations of ChongQing airport contact road interchange construction and the interval viaduct of rail transit line no. 3 and the station structure, the three-dimensional finite element model is established, the structure safety simulation simulation research of ChongQing airport contact road interchange construction to rail transit line no. 3 interval viaduct is carried on. The change of the displacement and internal force value of rail line no. 3 pile and pile foundation structure is analyzed in a variety of different situations such as different construction, different load conditions and different position relationship;②The simulation research of ramp anti-slide pile displacement is carried on by establishing a two-dimensional finite element model.③On the basis of the simulation results, The structural safety evaluation of ChongQing airport contact road interchange construction to rail transit line no. 3 interval viaduct and attached structures is completed in a variety of different situations. Meet the safety standards and the building design, construction and monitoring are put forward,at the same time the reference for new project design of rail transit control protected area is provided.