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《Chinese Journal of Underground Space and Engineering》 2007-05
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The Surface Settlement Analysis of Curved Tunnel Shield

ZHOU Shi-jun,WANG Jin-an(Civil and Environmental Engineering School,Beijing University of Science and Technology,Beijing 100083,China)  
Based on a subway project with a double curved tunnel section in some city,a three-dimensional finite difference model is established to carry out numerical simulation.With the simulation results,the range of the ground surface settlement,laws of the strata horizontal displacement and the interaction of double tunnels by shield excavation are analyzed.The range of inside surface settlement is great in the curved tunnels construction and the changes of the soil horizontal displacement take place around the tunnel.The difference of both-side settlement range increases and the outside soil horizontal displacement trend extends to the inside with the reduction of curve radius.The surface settlement range increases with the addition of tunnel buried depth but the settlement decreases.
【CateGory Index】: U455.43
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