Volume 38 Issue 6
Dec.  2024
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Guo Chengyu, Zong Zhongling, Huang Yunhan, Zhuang Xiaoxuan. Experimental Study on Compressive Bearing Performance of Bilateral Helix-Stiffened Cement Mixing Piles[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(6): 745-749. doi: 10.3969/j.issn.1007-2993.2024.06.016
Citation: Guo Chengyu, Zong Zhongling, Huang Yunhan, Zhuang Xiaoxuan. Experimental Study on Compressive Bearing Performance of Bilateral Helix-Stiffened Cement Mixing Piles[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(6): 745-749. doi: 10.3969/j.issn.1007-2993.2024.06.016
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Experimental Study on Compressive Bearing Performance of Bilateral Helix-Stiffened Cement Mixing Piles

doi: 10.3969/j.issn.1007-2993.2024.06.016

  • College of Civil and Harbor Engineering, Jiangsu Ocean University, Lianyungang 222002, Jiangsu, China

  • Received Date: 2023-08-14
  • Accepted Date: 2023-12-25
  • Rev Recd Date: 2023-10-30
    • Available Online: 2024-12-06
  • Publish Date: 2024-12-06
    Abstract
  • Bilateral Helix-Stiffened Cement Mixing Piles (BHCMP) is a new type of stiff composite pile. To study the feasibility of the construction process and the compressive bearing performance of BHCMP, three test piles were designed, and the on-site pile formation test and the compressive bearing performance test of the pile foundation were conducted. Comparative analysis of the pile forming process and bearing properties of helical piles, helical stiffened cement mixing piles, and BHCMP was carried out. The test results show that: the vertical bearing capacity of the helical pile is improved by synchronized rotary grouting around the helical pile to form a hydraulic soil column, which is about 1.85 times that of the helical pile, while the BHCMP has a 49% increase in ultimate compressive bearing capacity compared with the helical stiffened cement mixing piles through the secondary mixing and downward drilling, which makes the mixing of silt soil and cement in the re-drilled section more adequate and forms a hydraulic soil column with higher strength.

     

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