通过有限元分析研究了越江隧道不同地层中、不同加载和有无二衬情况下的纵向沉降。结果表明,隧道在加载情况下纵向成V形下沉,均质软土中在加载中心沉降量达到最大,软硬交界土中在交界处沉降量达到最大,软硬交界土中的最大沉降量相对均质软土的明显减少;施加二衬能减少变形。 Through the finite element analysis, the vertical settlement of the cross-river tunnel in different stratums with different loadings and with or without two linings was studied. The results show that the tunnel sinks longitudinally into a V-shape under loading and the settlement at the loading center reaches the maximum in homogeneous soft soil. The settlement at the junction of soft and hard boundary soil reaches the maximum and the maximum settlement in soft and hard boundary soil Relatively homogeneous soft soil significantly reduced; the application of two lining can reduce the deformation.