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Unified semi-analytical solution for elastic-plastic stress of deep circular hydraulic tunnel with support yielding

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Abstract

A unified semi-analytical solution is presented for elastic-plastic stress of a deep circular hydraulic tunnel with support yielding under plane strain conditions. The rock mass is assumed to be elastic-perfectly plastic and governed by the unified strength theory (UST). Different major principal stresses in different engineering situations and different support yielding conditions are both considered. The unified solution obtained in this work is a series of results, rather than one specific solution, hence it is suitable for a wide range of rock masses. In addition, parametric study is conducted to investigate the effect of intermediate principal stress. The result shows the major principal stress should be rationally chosen according to different engineering conditions. Finally, the applicability of the unified solution is discussed according to the critical pressures.

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Authors and Affiliations

  1. Department of Civil Engineering, Nanchang Institute of Technology, Nanchang, 330099, China

    Kai-hua Zeng  (曾开华) & Jia-xiong Xu  (许家雄)

Authors
  1. Kai-hua Zeng  (曾开华)
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  2. Jia-xiong Xu  (许家雄)
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Corresponding author

Correspondence to Kai-hua Zeng  (曾开华).

Additional information

Foundation item: Project(50969007) supported by National Natural Science Foundation of China; Project(GJJ13753) supported by the Scientific and Technological Research Fund, Department of Education, Jiangxi Province, China

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Zeng, Kh., Xu, Jx. Unified semi-analytical solution for elastic-plastic stress of deep circular hydraulic tunnel with support yielding. J. Cent. South Univ. 20, 1742–1749 (2013). https://doi.org/10.1007/s11771-013-1667-8

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  • DOI: https://doi.org/10.1007/s11771-013-1667-8

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