RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM

QI Changqing; XU Renping; WU Jimin

Volume 16 Issue 2

Oct. 2010

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QI Changqing, XU Renping, WU Jimin. 2008: RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM. JOURNAL OF ENGINEERING GEOLOGY, 16(2): 258-262.

Citation:

QI Changqing, XU Renping, WU Jimin. 2008: RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM. JOURNAL OF ENGINEERING GEOLOGY, 16(2): 258-262.

QI Changqing, XU Renping, WU Jimin. 2008: RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM. JOURNAL OF ENGINEERING GEOLOGY, 16(2): 258-262.

Citation:

QI Changqing, XU Renping, WU Jimin. 2008: RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM. JOURNAL OF ENGINEERING GEOLOGY, 16(2): 258-262.

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RELIABILITY ANALYSIS OF ROCK MASS DEFORMATION IN TUNNEL EXCAVATION BASED ON GENETIC ALGORITHM

1.
Research academy of Hohai University, Nanjing 210098;
2.
Engineering Construction Headquarters of Wenzhou Section of Zhuyong Highway,Yongjia 325100;
3.
Geotechnical Engineering Department,Nanjing Hydraulic Research Institute,Nanjing 210024

Received Date: 2007-08-13
Rev Recd Date: 2007-12-03
Publish Date: 2008-04-30

Abstract

Abstract

The initial stress state and stability of the surrounding rock mass will change during tunnel excavation. The rock mass even may collapse due to over-size displacement. A new method is presented in this paper for reliability analysis of tunnel excavation. The genetic algorithm is put forward to calculate the reliability index and failure probability for the complexity of the model. The proposed method is applied to reliability analyzing of a practical expressway tunnel. The result shows that the potential break areas appear at vault and spandrel of the tunnel. The reliability indexes and failure probabilities of the vault settlement and spandrel convergent reflect that the reliability of the unsupported construction can't meet the requirement of the specification. The tunnel must be supported in time.
- Reliability analysis,
- Surrounding rock mass,
- Genetic algorithm,
- Reliability index,
- Failure probability

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References(1)

References

[1] 李树忱,李术才,徐帮树.隧道围岩稳定性分析的最小安全系数法
[J].岩土力学, 2007, 28 (3):549~553.
Li Shuchen, Li Shucai, Xu Bangshu. Minimum safety factor method for stability analysis of surrounding rockmass of tunnel. Rock and Soil Mechanics, 2007, 28 (3):549-553.

[2] Hasofer A M, Lind N. An exact and invariant first-order reliability format
[J]. Journal of engineering mechanics, ASCE, 1974, 100 (1):111~121.

[3] Low B K. Efficient reliability evaluation using spreadsheet
[J]. Journal of engineering mechanics, 1997, 123 (7):749~752.

[4] Hoek, E., Brown, E T.. Trends in relationship between measured in-situ stresses and depth
[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1978, 15 ,211~215.

[5] Hoek, E.. Numerical modelling for shallow tunnels in weakrocks. http://www.rocscience.com, 2003.

[6] 中华人民共和国行业标准编写组.公路隧道施工技术规范(JTJ042-94)
[S].北京:人民交通出版社,1994.
The Professional Standards Compilation Group of People's Republic of China. JTJ042-94 Technical specifications for construction of highway tunnel (JTJ042-94). Beijing: China Communications Press,1994.

[7] 中华人民共和国国家标准编写组.建筑结构可靠度设计统一标准(GB50068-2001)
[S].北京:中国建筑工业出版社, 2001.
The National Standards Compilation Group of People's Republic of China. Unified standard for reliability design of building structures (GB50068-2001). Beijing: China Architecture and Building Press, 2001.

[8] 卢书强,许模,巨能攀.澜沧江某电站左岸地下洞室群围岩稳定性的FLAC^3D分析
[J].工程地质学报,2006, 14 (3):351~355.
Lu Shuqiang, Xu Mo, Ju Nengpan. Numerical analysis with FLAC^3D on rock mass stability surrounding cavern group in the left bank slope of a hydropower station on Lancangjiang river. Jouranl of Engineering Geology, 2006, 14 (3):351~355

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