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倾斜软土CFG桩复合地基上的路堤破坏模式研究

顾行文, 谭祥韶, 黄炜旺, 任国峰

顾行文, 谭祥韶, 黄炜旺, 任国峰. 倾斜软土CFG桩复合地基上的路堤破坏模式研究[J]. 岩土工程学报, 2017, 39(s1): 111-115. DOI: 10.11779/CJGE2017S1022
引用本文: 顾行文, 谭祥韶, 黄炜旺, 任国峰. 倾斜软土CFG桩复合地基上的路堤破坏模式研究[J]. 岩土工程学报, 2017, 39(s1): 111-115. DOI: 10.11779/CJGE2017S1022
GU Xing-wen, TAN Xiang-shao, HUANG Wei-wang, REN Guo-feng. Failure mechanisms of embankment on inclined soft foundation reinforced by CFG Piles[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 111-115. DOI: 10.11779/CJGE2017S1022
Citation: GU Xing-wen, TAN Xiang-shao, HUANG Wei-wang, REN Guo-feng. Failure mechanisms of embankment on inclined soft foundation reinforced by CFG Piles[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 111-115. DOI: 10.11779/CJGE2017S1022

倾斜软土CFG桩复合地基上的路堤破坏模式研究  English Version

详细信息
    作者简介:

    顾行文(1981-),男,江苏建湖人,高级工程师,主要从事土工离心模型试验研究工作。E-mail:xweng@nhri.cn。

Failure mechanisms of embankment on inclined soft foundation reinforced by CFG Piles

  • 摘要: 通过4组土工离心模型试验,研究了山区底面倾斜的软土层CFG桩复合地基路堤破坏模式。试验模拟了4种地基:倾斜天然软基,水平CFG桩复合地基,倾斜CFG桩复合地基,以及施工有缺陷的CFG桩复合地基。试验结果表明:①路堤荷载作用下,CFG桩易发生多次桩体断裂,最终形成能够随软土移动的刚性短桩;②底面倾斜的复合地基上,CFG桩的断裂更集中在下坡方向,路堤破坏的影响范围远大于水平地基的情况;③缺陷CFG桩复合地基路堤变形显著增大。
    Abstract: Four groups of centrifugal model tests are performed to investigate the failure mechanisms of embankment on inclined soft foundation reinforced by CFG piles. The tests simulate four kinds of grounds: natural inclined soft ground, normal CFG composite ground, inclined CFG composite ground, and inclined defect CFG composite ground. The results show that the failure mechanisms are as follows: (1) CFG piles are prone to fracture into many rigid short piles moving with soil failure; (2) For the inclined ground, fractures of CFG piles occur more greatly along the downhill direction, and the deformation is larger; (3) For the defect CFG pile composite ground, the deformation is significantly larger.
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出版历程
  • 收稿日期:  2016-11-27
  • 发布日期:  2017-11-19

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