Force Analysis And Numerical Simulation Of Subway Station Structure Based On BIM Technology

This paper takes a subway station as the engineering background.The corresponding subway station model is constructed by BIM core modeling software Revit.Roaming simulation and construction simulation are carried out through BIM application software Navisworks.At present,there is lack of data exchange between BIM model and underground structure analysis software,And the finite element software modeling is difficult.In this paper,the simplified calculation model of the subway station is successfully introduced into the finite element analysis software ABAQUS.The numerical analysis of the subway station is carried out by using the "load structure" model and the "stratum structure" model respectively.The main research contents and conclusions are as follows:(1)Through the application of BIM technology in underground engineering research,Roaming and construction simulation are carried out by using the Revit model,The advantages of BIM modeling and the broad prospects of BIM technology applied in underground engineering are fully demonstrated.(2)The transition from Revit 3D model to finite element analysis software ABAQUS is realized by using the data of “.sat”.(3)The “load structure” model is used to study the internal force variation law of the station structure under different working conditions and influencing factors,The results show that:Under the normal working condition,the roof and side wall deformation of the station is larger.When the groundwater level is above the station roof,it has the greater influence on the internal force of the structure.The influence of water pressure reduction factor and lateral pressure factor on the station is linear,and has a greater impact on the side wall of the station.(4)In this paper,the "stratum structure" model is used to analyze the ground settlement and side wall deformation of the station during construction.The results show that,The law of land surface settlement is roughly arch shoulder distribution,The maximum settlement near the foundation pit meets the control requirements.The deformation law of the side wall is approximately bow shaped,And the deformation of the side wall in the middle of subway station is larger.The maximum horizontal displacement of the side wall meets the control requirements.