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A new method determining safe thickness of karst cave roof under pile tip

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Abstract

Cave roofs are used to support pile foundation in many engineering projects. Accurate stability analysis method of cave roof under pile tip is important in order to ensure the safety of the pile foundation structure. Firstly the mechanical model to analysis the stability of cave roof under pile tip is founded aiming to solve the problems that the simplified mechanical model has. Secondly, the boundary of cave roof is simply supposed to be supported according to the integrity of the rock mass in the boundary of cave roof. Thirdly, based on the theory of plates and shells, the simplified model is calculated and the theoretical calculation formula to determine the safe thickness of cave roof under pile tip can be obtained when the edges of the cave roof are simply supported. In the end, the analysis of the practical engineering project proves the feasibility and the rationality of the method which can be a new method to calculate the safe thickness of cave roof under pile tip.

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References

  1. GB50021-2001. Code for investigation of geotechnical engineering [S]. (in Chinese)

  2. ZHANG Su-ming, CHANG Shi-biao. The compilation committee of engineering geology. Engineering geology handbook [M]. 4th Ed. Beijing, China: China Architecture and Building Press, 2007: 525–536. (in Chinese)

    Google Scholar 

  3. ZHOU Jian-pu, LI Xian-ming. Methods of stability analysis in karst foundation [J]. Mining and Metallurgical Engineering, 2003, 23(1): 4–7. (in Chinese)

    Google Scholar 

  4. ZHAO Min-hua, CHENG Ye, CAO Wen-gui. Fuzzy method for the stability analysis of cave roof under pile tip in karst region [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(8): 1376–1383. (in Chinese)

    Google Scholar 

  5. LI Bin, FAN Qiu-yan, QIN Fen-rong. Analysis on roof stability of karst cave in karst areas [J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(4): 532–536. (in Chinese)

    Google Scholar 

  6. ZHAO Ming-hua, JIANG Chong, CAO Wen-gui. Study on bearing capacity of rock-socked piles and safe thickness of cave roofs in karst region [J]. Chinese Journal of Geotechnical Engineering, 2007, 29(11): 1618–1622. (in Chinese)

    Google Scholar 

  7. CAO Wen-gui, YAN Ye-fen, ZHANG Yong-jie. Fuzzy possibility reliability analysis method for stability of karst roof under pile tip [J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1): 89–94. (in Chinese)

    Google Scholar 

  8. ZHAO Ming-hua, ZHANG Rui, HU Bo-xue. Analysis of stability of cave roof under pile tip in karst area [J]. Journal of Highway and Transportation Research and Development, 2009, 26(6): 13–16, 31. (in Chinese)

    Google Scholar 

  9. FU Ce-jian. Analysis on roof stability and deformation of concealed cave in karst regions [J]. Rock and Soil Mechanics, 2010, 31(s2): s288–s292. (in Chinese)

    Google Scholar 

  10. ZHAO Ming-hua, CAO Wen-gui, HE Peng-xiang, YANG Ming-hui. Study on safe thickness of rock mass at end of bridge foundation’s pile in karst and worked-out mine area [J]. Rock and Soil Mechanics, 2004, 24(1): 64–68. (in Chinese)

    Google Scholar 

  11. CHEN R P, ZHOU W H, CHEN Y M. Influences of soi1 consolidation and pile load on the development of negative skin friction of a pile [J]. Computers and Geotechnics, 2009, 36(8): 1265–1271.

    Article  Google Scholar 

  12. CHEN Jian-jun. Numerical analysis and treatment on the stability of highway karst cave embankment [J]. Highway Engineering, 2011, 36(4): 124–126.

    Google Scholar 

  13. WANG Dan-hui, WANG Xiang-lin, LIU Hong. Application of FLAC3D to evaluation the roof stability of karst cave [J]. Yangtze River, 2009, 40(9): 71–74.

    Google Scholar 

  14. YOSSEF H H, ILIA W, DAGAN B M. Stability of shallow karstic caverns in blocky rock masses [J]. International Journal of Rock Mechanics & Mining Sciences, 2010, 47(8): 1289–1303.

    Google Scholar 

  15. SUCHOWERSKA A M, MERIFIELD R S, CARTER J P, CLAUSEN J. Prediction of underground cavity roof collapse using the Hoek-Brown failure criterion [J]. Computers and Geotechnics, 2012, 44(3): 93–103.

    Article  Google Scholar 

  16. REZA Z M, EHSAN I, MEHRAD M I. 3D finite elements analysis of vertically loaded composite piled. Raft [J]. Journal of Central South University, 2013, 20(6): 1713–1723.

    Article  Google Scholar 

  17. SUN Shu-wei, WANG Jia-chen, BIAN Xiao-lin. Design of micropiles to increase earth slopes stability [J]. Journal of Central South University, 2013, 20(5): 1361–1367.

    Article  Google Scholar 

  18. JIANG Chong, ZHAO Ming-hua, CAO Wen-gui. Stability analysis of subgrade cave roofs in karst region [J]. Journal of Central South University of Technology, 2008, 15 (s2): s38–s44.

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Resources and Safety Engineering, Central South University, Changsha, 410083, China

    Chong Jiang  (蒋冲), Lang Liu  (刘浪) & Jun-ping Wu  (吴均平)

Authors
  1. Chong Jiang  (蒋冲)
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  2. Lang Liu  (刘浪)
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  3. Jun-ping Wu  (吴均平)
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Corresponding author

Correspondence to Chong Jiang  (蒋冲).

Additional information

Foundation item: Project(14JJ4003) supported by the Natural Science Foundation of Hunan Province, China; Project(2013M531812) supported by China Postdoctoral Science Foundation; Project supported by the Postdoctoral Foundation of Central South University; Project(14JJ4003) Project(2013SCEEKL001) supported by Foundation of Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, China

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Jiang, C., Liu, L. & Wu, Jp. A new method determining safe thickness of karst cave roof under pile tip. J. Cent. South Univ. 21, 1190–1196 (2014). https://doi.org/10.1007/s11771-014-2053-x

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  • DOI: https://doi.org/10.1007/s11771-014-2053-x

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