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Volume 39 Issue z2
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JIANG Wu-jun, YAN Ding-yuan, WANG Ming-ming, LI Yu, CHENG Hua-wei, JIANG Chong, CHENG Zhao. Load-settlement rules and calculation of foundation piles in karst cave[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 67-70. DOI: 10.11779/CJGE2017S2017
Citation: JIANG Wu-jun, YAN Ding-yuan, WANG Ming-ming, LI Yu, CHENG Hua-wei, JIANG Chong, CHENG Zhao. Load-settlement rules and calculation of foundation piles in karst cave[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 67-70. DOI: 10.11779/CJGE2017S2017
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Load-settlement rules and calculation of foundation piles in karst cave

  • 1. Hunan Province Highway Construction Development Corporation, Changsha 410000, China;
    2. Hunan Provincial Communications Planning Survey & Design Institute, Changsha 410008, China;
    3. School of Resources and Safety Engineering, Central South University, Changsha 410083, China

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  • Received Date: August 01, 2017
  • Published Date: December 19, 2017
    Graphical Abstract
    • Abstract
  • In order to study the influence of the backfill characteristics of the large karst area on the load transfer of the pile foundation and to improve the safety and economy, considering the characteristics of the side friction resistance of the pile back and the pile in the large karst area, based on the exponential load transfer function, the method for calculating the load-settlement curves of backfill piles in large karst area is obtained. The method is verified by the existing research results and engineering examples. The results show that the proposed method is in good agreement with the actual project. Based on this method, the influence of parameters on the load- settlement curves of karst piles is analyzed. The results show that the load-settlement curves of pile foundation increase with the axial strain, particle size of gravel and pile parameter αb, and the ultimate bearing capacity of the piles increases with the increase of the axial strain and pile parameter αs and decreases with the increase of the particle size of gravel.
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    • References (11)
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