Abstract��
Based on the Xi'an Metro Line 2, metro traffic loading is simulated by establishing an analytical model of a subgrade train-track system and a material mechanical model of a loess soil mass under the effects of long-term cyclic loading is derived and introduced according to the results of a dynamic triaxial test. Reasonable calculating parameters for the studied object are set, especially a series of numerical calculating conditions, such as artificial nonlinear viscoelasticity boundary conditions, to establish the numerical analytical model considering the dynamic interaction between a tunnel and surrounding soil and to study the regularity of the ground vibration response under metro traffic loading in a loess area. In addition, the variation of the ground vibration response under different speeds and various loads is analyzed and compared with respect to one-way and two-way metro traffic modes.
WANG Xin,
Han-Xuan,
ZHOU Hong-Lei
.Study of the Numerical Calculation of Ground Response Under Metro Traffic Loading in a Loess Area[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 152-160
2014, Vol. 51 