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Abstract A full-scale test is carried out to study the ultimate bearing capacity of the shield tunnel reinforced by full-ring steel plate. The failure phenomena are described；and the load-displacement curve is obtained. The key performance point of the reinforced structure is also analyzed. The result shows that：the full-ring steel plate reinforcement can improve the structural strength and stiffness of the tunnel efficiently；the bond failure between the steel plate and the segments leads to the failure of the reinforced structure.
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Received: 21 May 2013
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2013, Vol. 32 
