Research On 3D Simulation Technology Of Wuhan Subway Construction Based On ANSYS

During the tunnel excavation construction process,due to the different geological distribution of the tunnel construction area and the diversification of the excavation supporting operation system of the tunnel construction,there are many engineering safety problems exist in the tunnel supporting structure.It is necessary to simulate and analyze the safety and reliability of the supporting structure during the tunnel excavation.This paper uses the finite element ANSYS software to analyze the three-dimensional simulation of subway tunnel construction,and the complicated conditions and influencing factors of tunnel construction formation environment are considered in detail.Taking Wuhan metro line orbit 27 tunnel project as an engineering example,the finite element ANSYS software is used to establish the three-dimensional model of typical interval tunnel.Meanwhile,the whole process of tunnel construction excavation is simulated dynamically.In the whole process of the finite element numerical simulation,the displacement diagram,stress diagram and the strain diagram of different tunnel excavation phase are analyzed,and the numerical simulation results are compared with the norm.The results show that the deformation,stress and strain of the tunnel support structure are increasing with the deepening of the tunneling excavation scale;the data obtained from the numerical simulation results are in good agreement with the engineering practice;the deformation,stress and strain values are within the allowable range.The safety evaluation of the Wuhan metro line 27 tunnel project under construction is carried out in this paper,and the conclusion can provide a useful reference for similar tunnel construction.