The contrast of numerical simulation for the tunnel No.1 of Hangzhou subway excavated on the virtual situ

According to more than 20 000 synthetic borehole data of Hangzhou,the computer virtual situ was carried out by use of MapX and mounting integrated mature calculation software such as ABAQUS.Considering the characteristics of shield construct ion,a simplified two-dimensional FEM modeling was proposed and an appropriate calculation program was worked out in this paper.It can carry out the stress and strain analyses of the tunnel and lining build,and also can do ground surface subsidence calculation.In order to verify the definition,we use ADINA software to calculate the same project in contrast to the anterior results,and discuss the stress of the lining and ground surface subsidence calculation in different ground load instances or different stiffness unload ratios.