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  Longitudinal Rigidity of Shield Tunnels Based on Numerical Investigation

  In recent years, shield tunnelling method has been widely used in world’s underground transportation engineering due to its high mechanization and mature technology. However, according to past researches, slender structures as shield tunnels are particularly sensitive to differential settlement of foundation, which may lead to large opening of the segment joints and consequently complete failure of the structure. Thus, the mechanical performance of shield tunnels should be studied thoroughly when the failure of these structures may carry a catastrophic collapse of the tunnel, with unacceptable loss of life and property.

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