Abstract
Based on a shield tunnel, the ground settlement by shield method and pipe-jacking method in straight tunnel and curve tunnel was studied. The ground settlement curves by the two methods were analyzed by numerical simulation. Compared with straight tunnel, the ground settlement trough in curve tunnel is shifted to the bending direction by about 0.5D. The overall ground settlement difference between shield and pipe-jacking method is relatively small in straight tunnel, and the settlement in curve tunnel by pipe-jacking method is more than that by shield method. With the excavation of the tunnel, the ground settlement trend in curve tunnel is more obvious than that in straight tunnel. And the settlement difference is relatively large in the middle of the tunnel for both straight tunnel and curve tunnel.
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