Abstract According to the calculation method of ground settlement induced by double-line parallel shield tunnel? ling (DLPST), a simplified method of stochastic medium theory is modified in this paper that: calculates the ground settlements induced by both prior and later shield tunnelling, respectively; considers different parameter values and the shifting of maximum ground settlement induced by later shield tunnelling; and eventually obtains the total ground settlement induced by double- line parallel shield tunnelling. Research findings show that the proposed method can be used to calculate the ground settlement and horizontal displacement; its calculated values mostly coincide with the measured values of ground settlement, and it therefore has a wide application. Because of the impacts of prior shield tunnelling, the surrounding soil mass is disturbed during later shield tunnelling and the radius convergence of the second shield tunnelling is larger than that of the prior shield, while the main influential angle becomes smaller and the maximum ground settlement is shifted to the direction of the central axis.
Abstract：
According to the calculation method of ground settlement induced by double-line parallel shield tunnel? ling (DLPST), a simplified method of stochastic medium theory is modified in this paper that: calculates the ground settlements induced by both prior and later shield tunnelling, respectively; considers different parameter values and the shifting of maximum ground settlement induced by later shield tunnelling; and eventually obtains the total ground settlement induced by double- line parallel shield tunnelling. Research findings show that the proposed method can be used to calculate the ground settlement and horizontal displacement; its calculated values mostly coincide with the measured values of ground settlement, and it therefore has a wide application. Because of the impacts of prior shield tunnelling, the surrounding soil mass is disturbed during later shield tunnelling and the radius convergence of the second shield tunnelling is larger than that of the prior shield, while the main influential angle becomes smaller and the maximum ground settlement is shifted to the direction of the central axis.
WEI Gang- Zhou-Yang-Kan
.Stochastic Medium Prediction for Ground Settlement Induced by Double-Line Parallel Shield Tunnelling[J] MODERN TUNNELLING TECHNOLOGY, 2016,V53(5): 92-99
2016, Vol. 53 