Experimental Study of the Ultimate Bearing Capacity of a Shield Tunnel Reinforced by a Semi-Ring Steel Plate
(1 Department of Geotechnical Engineering, Tongji University, Shanghai 200092; 2 Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092; 3 Technology Centre of Shanghai Shentong Metro Co. Ltd., Shanghai 201103)
Abstract��
A common method, semi-ring steel-plate reinforcement is mainly used for controlling large deformation of a tunnel lining, namely by providing post-reinforcement for the tunnel. Regarding the ultimate bearing test of a shield tunnel, this paper presents semi-ring steel-plate reinforcement technology, records the structure failure phenomenon that occurred during testing, gives the corresponding load-displacement curve, and analyzes key performance points. The results show that the given semi-ring steel-plate reinforcement can effectively improve the structural rigidity and ultimate bearing capacity of a tunnel, and that the failure of the bonding surface between the steel plate and the lining is the main cause of structural failure and a key factor in tunnel reinforcement.
LIU ,
XIAN 1,
Zhang-Hao-Li-1 etc
.Experimental Study of the Ultimate Bearing Capacity of a Shield Tunnel Reinforced by a Semi-Ring Steel Plate[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 131-137
2014, Vol. 51 