Study on Surface Settlement Deformation Monitoring and Numerical Simulation in Tunnel Construction
In this paper,the finite element simulation method is used to establish a tunnel simulation model,analyze the deformation characteristics of different tunnel sections and the internal mechanical response of the supporting structure,and compare with the measured values.The results show that the maximum surface subsidence at K32+700 and K33+900 sections is 23.5 and 20.5 mm,respectively.The plastic zone of the tunnel section is mainly located at the bottom of the tunnel arch,arch foot and invert.The measured value at K32+700 is the closest to the simulated value,and the error between the measured value and the simulated value at K33+900 is less than 10%,which verifies the reliability of the model.
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