顶管施工对轨道交通区间隧道的影响分析

Analysis on the Influence of Pipe Jacking Construction on Rail Transit Interval Tunnel

以某电力隧道顶管施工.上穿轨道交通区间隧道工程为背景,通过Midas/GTS有限元计算软件分析顶管上穿施工对区间隧道的影响程度及规律。结果表明,随着顶管推进,区间隧道最大水平位移先增大后减小;最大竖向位移先沉降后上浮;隧道最终变形值小于安全控制值。分析成果可供类似工程参考。

Based on a project of electric power tunnel by pipe jacking above section tunnel of rail transit, Midas/GTS finite element soft analysis is carried out on the influence degree and law of tube-jacking construction on the section tunnel of rail transit. The results show that, with the advance of pipe jacking, the maximum horizontal displacement of the tunnel increases first and then decreases, and the maximum vertical displacement of the tunnel falls first and then rises. The final deformation value of the tunnel is less than the safety control value. The analysis results can be used as reference for similar projects.