Volume 40 Issue 3
Jun.  2026
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Article Navigation >  GEOTECHNICAL ENGINEERING TECHNIQUE  > 2026  >  40(3): 336-342
XU Chao, REN Jun, YANG Yunxuan, SONG Jie, ZHANG Liang. Comparative study on settlement calculation and measurement of CFG pile composite foundation in Beijing[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(3): 336-342. doi: 10.20265/j.cnki.issn.1007-2993.2025-0173
Citation: XU Chao, REN Jun, YANG Yunxuan, SONG Jie, ZHANG Liang. Comparative study on settlement calculation and measurement of CFG pile composite foundation in Beijing[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(3): 336-342. doi: 10.20265/j.cnki.issn.1007-2993.2025-0173
shu

Comparative study on settlement calculation and measurement of CFG pile composite foundation in Beijing

doi: 10.20265/j.cnki.issn.1007-2993.2025-0173
  • 1.

    China Ordnance Industry Survey and Geotechnical Institute Co., Ltd., Beijing 100053, China

  • 2.

    Beijing Zhongbing Geotechnical Engineering Co., Ltd., Beijing 100162, China

  • Received Date: 2025-04-15
  • Accepted Date: 2025-08-25
  • Rev Recd Date: 2025-07-16
    • Available Online: 2026-06-08
  • Publish Date: 2026-06-08
    Abstract
  • CFG pile composite foundation is commonly used to solve problems such as insufficient bearing capacity or excessive deformation of natural foundations. There have been controversies over the settlement calculation method and its reliability for CFG pile composite foundations. A considerable number of scholars and geotechnical engineers hold that the calculated settlement values are larger than the measured ones. To this end, the design and deformation monitoring data of multiple CFG pile composite foundation projects in typical stratum regions of Beijing were collected and sorted out. The study shows that the calculated settlement values are generally smaller than the measured ones without considering rebound-recompression deformation, while the calculated values are close to the measured ones when rebound-recompression deformation is taken into account. Combined with relevant codes, a settlement calculation formula considering both rebound-recompression deformation and additional stress deformation is proposed, which improves the accuracy and efficiency of settlement calculation. The research results can provide references for the design of CFG pile composite foundations and the arrangement of settlement belts.

     

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