Abstract
The objective of this work is to obtain the seismic safety coefficient and fracture surface and proceed with the seismic safety evaluation for the rock mass or soil mass surrounding a tunnel, and the limitation of evaluating seismic stability is considered using the pseudo-static strength reduction. By using the finite element software ANSYS and the strength reduction method, new methods of seismic safety evaluation for the rock mass or soil mass surrounding a tunnel are put forward, such as the dynamic finite element static shear strength reduction method and dynamic finite element shear strength reduction method. In order to prove the feasibility of the proposed methods, the results of numerical examples are compared with that of the pseudo-static strength reduction method. The results show that 1) the two methods are both feasible, and the plastic zone first appears near the bottom corners; 2) the safety factor of new method II is smaller than that of new method I but generally, and the difference is very small. Therefore, in order to ensure the safety of the structure, two new methods are proposed to evaluate the seismic stability of the rock mass or soil mass surrounding a tunnel. A theoretical basis is provided for the seismic stability of the rock mass or soil mass and the lining surrounding a tunnel and also provided for the engineering application.
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References
SHI L. Loess tunnel seismic design study [D]. Xi’an: Chang’an University, 2005. (in Chinese)
JIANG Q, FENG X T, XIANG T B. Discussion on method for calculating general safety factor of underground caverns based on strength reduction theory [J]. Rock and Soil Mechanics, 2009, 5(2): 291–296.
LI S C, XU B S. Minimum safety factor method for stability analysis of surrounding rock mass of tunnel [J]. Rock and Soil Mechanics, 2007, 28(3): 549–554.
YANG X L, HUANG F. Stability analysis of shallow tunnels subjected to seepage with strength reduction theory [J]. Journal of Central South University of Technology, 2009, 16(6): 1001–1005.
STERPIL D, CIVIDINI A. A physical and numerical investigation on the stability of shallow tunnels in strain softening media [J]. Rock Mechanics and Rock Engineering, 2004, 37(4): 277–298.
ZARETSKII Y K, KARABAEV M I, KHACHATURYAN N S. Construction monitoring of a shallow tunnel in the lefortovo district of moscow [J]. Soil Mechanics and Foundation Engineering, 2004, 41(2): 45–51.
CHEN G X, ZHANG K X, XIE J F. A seismic performance analysis of the cave dwelling on the loess precipice [J]. Journal of Harbin University of Civil Engineering and Architecture, 1995, 28(1): 16–21.
CHEN G X. Geotechnical earthquake engineering [M]. Beijing: Science Press, 2007: 30–100. (in Chinese)
GAO F, REN X. Seismic response analysis of loess cave [J]. Journal of Lanzhou Railway University: Natural Sciences, 2001, 20(3): 12–18.
ZHENG Y R, ZHAO S Y, DENG C J. Development of finite element limit analysis method and its applications in geotechnical engineering [J]. Engineering Sciences, 2006, 8(12): 39–61.
ZHENG Y R, CHEN Z Y, WANG G X. Engineering treatment of slope & landslide [M]. Beijing: China Communications Press, 2007: 20–150. (in Chinese)
ZHENG Y R, QIU C Y, ZHANG H. Exploration stability analysis methods of surrounding rocks in soil tunnel [J]. Journal of Rock Mechanics and Engineering, 2008, 27(10): 254–260.
QIU C Y, ZHENG Y R, SONG Y K. Exploring safety factors of unlined loess tunnel by ANSYS [J]. Journal of Underground Space and Engineering, 2009, 5(2): 291–296.
YANG Z, ZHENG Y R, ZHANG H. Analysis on stability for the surrounding rock of tunnel and exploring the strength parameters [J]. Journal of Underground Space and Engineering, 2009, 5(2): 283–290.
ZHANG H, ZHENG Y R, YANG Z. Exploration of safety factors of the loess tunnel [J]. Journal of Underground Space and Engineering, 2009, 5(2): 297–306.
SHAN X L, SUN F. Analysis of seismic reliability of underground tunnel structure [J]. Journal of Natural Disasters, 2009, 18(2): 146–149.
GU Z Q, PENG S Z, LI Z K. Underground tunnel engineering [M]. Beijing: Tsinghua University Press, 1994: 10–70. (in Chinese)
CHEN L W, PENG J B, FAN W. Stability of loess hidden hole under earthquake [J]. Journal of Chang’an University: (Natural Science Edition), 2007, 27(6): 34–36.
ZHANG L M, ZHENG Y R, WANG Z Q. Application of strength reduction finite element method to road tunnels [J]. Rock and Soil Mechanics, 2007, 28(1): 97–106.
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Foundation item: Project(2011CB013600) supported by State Key Program for Basic Research of China; Project(20136201110003) supported by the Education Ministry Doctoral Tutor Foundation of China; Project(51368039) supported by the National Natural Science Foundation of China; Project(2013-4-94) supported by the Program of Science and Technology Research in Lanzhou City, China
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Cheng, Xs., Dowding, C.H. & Tian, Rr. New methods of safety evaluation for rock/soil mass surrounding tunnel under earthquake. J. Cent. South Univ. 21, 2935–2943 (2014). https://doi.org/10.1007/s11771-014-2260-5
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DOI: https://doi.org/10.1007/s11771-014-2260-5