Journal
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
Volume 45, Issue -, Pages 153-165Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tust.2014.10.003
Keywords
Shield tunnel; Shearing effect; Flattening effect; Circumferential behavior; Differential settlement
Funding
- Glenn Department of Civil Engineering, Clemson University, South Carolina
- National 973 Basic Research Program of China [2011CB013800]
- National Natural Science Foundation of China [51278381]
- Shanghai Outstanding Academic Leaders Program [12XD1405100]
- Shanghai Pujiang Program [12PJ1408700]
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Differential settlements of the shield tunnel along the longitudinal direction can significantly affect the circumferential behavior of segmental lining, degrading both the structure safety and serviceability. In this paper, the authors introduce both the shearing effect and flattening effect on the tunnel cross section, which was caused by the longitudinal differential settlement, into an existing analytical model of jointed shield tunnels. An example is then presented to illustrate the variation of the circumferential behavior of segmental lining, including both the structure safety and serviceability, along the longitudinal position. Finally, a series of parametric studies are performed to investigate how factors such as tunnel longitudinal settlement, property of surrounding ground, and the design parameters of segmental lining affect the circumferential behavior of the segmental lining. (C) 2014 Elsevier Ltd. All rights reserved.
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