Study on the Influence of Pipe Jacking Close Crossing on the Construction of Close Viaduct Piles
In order to ensure the safety of pipe jacking construction in close crossing,it is necessa-ry to analyze the impact of pipe jacking construction on the construction of adjacent viaduct piles.The research method of the influence of pipe jacking short distance crossing on the construction of adjacent viaduct piles is proposed.Firstly,the general situation of pipe jacking short distance crossing project is introduced,and the location relationship between the pipe jacking construction area and the Viaduct is obtained.Secondly,the soil disturbance effect generated during the construction process of pipe jacking for close distance crossing was analyzed.Finally,the finite element model of pipe jacking and the finite element model of Viaduct are established through the linear elastic model and Mohr-Coulomb model,and numerical simulation is carried out according to the designed construction process of pipe jacking close crossing.After verification,the simulation results of the proposed method are basically consistent with the actual results,indicating that the proposed method has high simulation accuracy.
top pipe close crossingsoil disturbance effectMohr-Coulomb modelnumerical simulationviaduct pile construction
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