高级搜索
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊

单桩承载力对刚性桩复合地基路堤稳定性的影响

刘吉福, 郑刚

刘吉福, 郑刚. 单桩承载力对刚性桩复合地基路堤稳定性的影响[J]. 岩土工程学报, 2019, 41(11): 1992-1999. DOI: 10.11779/CJGE201911003
引用本文: 刘吉福, 郑刚. 单桩承载力对刚性桩复合地基路堤稳定性的影响[J]. 岩土工程学报, 2019, 41(11): 1992-1999. DOI: 10.11779/CJGE201911003
shu
LIU Ji-fu, ZHENG Gang. Influences of bearing capacity of piles on stability of embankment with rigid pile composite foundation[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(11): 1992-1999. DOI: 10.11779/CJGE201911003
Citation: LIU Ji-fu, ZHENG Gang. Influences of bearing capacity of piles on stability of embankment with rigid pile composite foundation[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(11): 1992-1999. DOI: 10.11779/CJGE201911003
shu

单桩承载力对刚性桩复合地基路堤稳定性的影响  English Version

  • 1. 广东省交通规划设计研究院股份有限公司,广东 广州 510507;
    2. 天津大学建筑工程学院,天津 300072

基金项目: 国家自然科学基金项目（51078263）
详细信息
    作者简介:

    刘吉福(1971— ),男,博士,教授级高级工程师,主要从事公路设计与科研等工作。E-mail: 617067152@qq.com。

  • 中图分类号: TU470

Influences of bearing capacity of piles on stability of embankment with rigid pile composite foundation

  • 1. Guangdong Province Communication Planning ＆ Design Institute Co., Ltd., Guangzhou 510507, China;
    2. School of Civil Engineering, Tianjin University, Tianjin 300072, China

摘要

    摘要
  • 摘要: 现行规范中刚性桩复合地基路堤稳定分析方法不能反映单桩承载力、桩帽等对路堤稳定性的影响,计算的路堤稳定安全系数严重偏大,导致部分刚性桩复合地基路堤滑塌。为克服刚性桩复合地基路堤现有稳定分析方法的缺陷,在研究刚性桩复合地基路堤滑塌原因的基础上,分析了路堤滑塌时桩土相互作用,及刚性桩提高路堤稳定性的机理。然后,在分析刚性桩复合地基路堤现有稳定分析方法的缺陷的基础上,将修正密度法完善为修正重度法。最后,为研究单桩承载力对刚性桩复合地基路堤稳定性的影响,利用修正重度法分析了刚性桩长度、间距、扩底、桩帽等对路堤稳定性的影响,对比了不同稳定分析方法计算结果,并对刚性桩复合地基路堤设计提出了建议。研究表明：单桩承载力对密桩复合地基路堤稳定性影响很小,对疏桩复合地基路堤稳定性影响很大;增大单桩承载力比减小桩间距更合理;刚性桩在持力层中扩底比加大桩长更有效;利用桩帽、土拱等措施将大部分路堤荷载转移到桩顶方可发挥单桩承载力对路堤稳定性的作用;软土强度随深度增大不明显时应慎用悬浮桩复合地基。刚性桩复合地基路堤宜采用“强桩大帽”的疏桩复合地基方案。
    Abstract: The influences of bearing capacity and cap of rigid piles on the stability of embankment with rigid pile composite foundation cannot be taken into account in the methods recommended by the existing Chinese codes. Some embankments with rigid pile composite pile foundation slid owing to that the factor of safety gotten by those methods is much larger than the real value. To avoid the defects of the existing methods, the interactions between the piles and the soil among piles during sliding are analyzed, and the mechanism of improving the embankment stability by rigid piles is analyzed by analyzing the causes of slides. Then the revised density method is improved to be the revised weight method by analyzing the defects of the existing stability methods. Finally, the influences of the length, distance, enlarged base and cap of rigid piles on the embankment stability are studied by use of the revised weight method, and the influences of their bearing capacity on embankment stability are evaluated. The analysis results of different methods are compared. Some design proposals for the embankment with rigid pile composite foundation are put forward. It is shown that the influences of bearing capacity of piles on the stability of embankment with dense pile composite foundation are little but great on the embankment with sparse pile composite foundation. Increasing the bearing capacity of piles is more reasonable than decreasing the distance of piles. The belled piles are more efficient than those increasing their length. The rigid piles with large bearing capacity can play an important role to increase the stability of embankment only if most loads of embankment are transferred to the piles by pile caps and soil arch. The hanging piles should not be used if the strength of soft clay increases little along depth. The rigid pile composite foundation under embankment should be designed as the sparse pile composite foundation with large bearing capacity and pile cap.
    • HTML全文
    • 参考文献(22)
  • [1] BS8006—1:2010 Code of practice for strengthened/reinforced soils and other fills[S]. BSI Standards Publication, 2010.
    [2] TB 10106—2010 铁路工程地基处理技术规程[S]. 2010.
    (TB 10106—2010 Technical code for ground treatment of railway engineering[S]. 2010. (in Chinese))
    [3] JTG/T D31—02—2013 公路软土地基路堤设计与施工技术细则[S]. 北京: 人民交通出版社, 2015.
    (JTG/T D31—02—2013 Technical guidelines for design and construction of highway embankment on soft ground[S]. Beijing: China Communications Press, 2015. (in Chinese))
    [4] 朱旭华, 舒国明. 广珠北新围高架桥桥头路基滑移原因分析[J]. 中外公路, 2006, 26(4): 27-29.
    (ZHU Xu-hua, SHU Guo-ming.Causes analysis of embankment slide near Xinwei viaduct of Guangzhou-Zhuhai north expressway[J]. Journal of China & Foreign Highway, 2006, 26(4): 27-29. (in Chinese))
    [5] 黎爱清. CFG桩加固某软土路基的病害分析[J].铁道标准设计, 2012(6): 36-39.
    (LI Ai-qing.Failure analysis on CFG pile used for reinforcement of soft soil embankment[J]. Railway Standard Design, 2012(6): 36-39. (in Chinese))
    [6] 刘吉福, 郑刚, 安关峰. 折减荷载法分析刚性桩复合地基路基绕流滑动稳定性[J]. 广西大学学报, 2013, 38(1): 176-181.
    (LIU Ji-fu, ZHENG Gang, AN Guan-feng.Load reduction method for stability analysis of flow-slide of embankment on rigid-piles composite foundation[J]. Journal of Guangxi University, 2013, 38(1): 176-181. (in Chinese))
    [7] 刘吉福, 郑刚, 安关峰. 刚性桩复合地基路基绕流滑动稳定分析[J]. 工程勘察, 2013, 35(6): 17-22.
    (LIU Ji-fu, ZHENG Gang, AN Guan-feng.Stability analysis of flow-slide of embankment on rigid-piles composite ground[J]. Geotechnical Investigation & Surveying, 2013, 35(6): 17-22. (in Chinese))
    [8] 刘吉福, 郭舒洋, 肖昌建. 修正密度法分析混凝土桩复合地基路基绕流滑动稳定性[J]. 广东公路交通, 2016(5): 12-20.
    (LIU Ji-fu, GUO Shu-yang, XIAO Chang-jian.Revised density method for stability analysis of flow slide of embankment with concrete-pile composite foundation[J]. Guangdong Highway Communications, 2016(5): 12-20. (in Chinese))
    [9] 郑刚, 杨新煜, 周海祚. 基于渐进破坏的路堤下刚性桩复合地基的稳定性分析及控制[J]. 岩土工程学报, 2017, 39(4): 581-591.
    (ZHENG Gang, YANG Xin-yu, ZHOU Hai-zuo.Stability and control strategy of ground improved with rigid piles to support embankments based on progressive failure[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(4): 581-591. (in Chinese))
    [10] 郑刚, 刘力, 韩杰. 刚性桩加固软弱地基上路堤的稳定性问题(Ⅱ): 群桩条件下的分析[J]. 岩土工程学报, 2010, 32(12): 1811-1820.
    (ZHENG Gang, LIU Li, HAN Jie.Stability of embankment on soft subgrade reinforced by rigid piles(Ⅱ): group piles analysis[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(12): 1811-1820. (in Chinese))
    [11] 李帅. 刚性桩复合地基支撑路堤的失稳破坏机理及其稳定分析方法研究[D]. 天津: 天津大学, 2012.
    (LI Shuai.Research on failure mechanisms and stability analysis method of embankment supported on composite ground reinforced with rigid piles[D]. Tianjin: Tianjin University, 2012. (in Chinese))
    [12] 刘力. 刚性桩加固路堤稳定分析方法研究[D]. 天津: 天津大学, 2010.
    (LIU Li.Research on the stability analysis of rigid pile supported embankment[D]. Tianjin: Tianjin University, 2010. (in Chinese))
    [13] 熊传祥, 王艺霖, 陈福全. 路堤荷载下刚性桩复合地基稳定性计算[J]. 中南大学学报, 2017, 48(10): 2745-2752.
    (XIONG Chuan-xiang, WANG Yi-lin, CHEN Fu-quan.Stability calculation of rigid pile composite foundation under embankment load[J]. Journal of Central South University, 2017, 48(10): 2745-2752. (in Chinese))
    [14] 王哲明. 桩承式软基路堤侧滑变形机理及稳定分析[D]. 福州: 福州大学, 2015.
    (WANG Zhe-ming.Side slide deformation mechanism and stability analysis of pile supported embankment on soft foundation[D]. Fuzhou: Fuzhou University, 2015. (in Chinese))
    [15] 刘吉福, 郑刚, 龚晓南, 等. 柔性荷载刚性桩复合地基修正密度法稳定分析改进[J]. 岩土工程学报, 2017, 39(增刊2): 33-36.
    (LIU Ji-fu, ZHENG Gang, GONG Xiao-nan, et al.Improvement of revised density method for stability analysis of rigid-pile composite foundation with flexible load[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(S2): 33-36. (in Chinese))
    [16] 俞建霖, 李俊圆, 王传伟. 考虑桩体破坏模式差异的路堤下刚性桩复合地基稳定分析方法研究[J]. 岩土工程学报, 2017, 39(增刊2): 37-40.
    (YU Jian-lin, LI Jun-yuan, WANG Chuan-wei.Stability of composite foundation improved by rigid piles under embankment considering different failure modes of piles[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(S2): 37-40. (in Chinese))
    [17] GDJTG/T E01—2011 广东省公路软土地基设计与施工技术规定[S]. 北京: 人民交通出版社, 2011.
    (GDJTG/T E01—2011 Design and construction specification of soft clay ground of Guangdong highway[S]. Beijing: China Communications Press, 2011. (in Chinese))
    [18] JGJ79—2012 建筑地基处理技术规范[S]. 北京: 中国建筑工业出版社, 2013.
    (JGJ79—2012 Technical code for ground treatment of buildings[S]. Beijing: China Architecture & Building Press, 2013. (in Chinese))
    [19] 苗德山, 刘吉福. 基于离心模型试验的路堤下CFG桩破坏模式研究[J]. 广东公路交通, 2016(4): 10-13.
    (MIAO De-shan, LIU Ji-fu.Study of failure mode of CFG pile in composite foundation under embankment by centrifugal model test[J]. Guangdong Highway Communications, 2016(4): 10-13. (in Chinese))
    [20] 陈云敏, 贾宁, 陈仁朋. 桩承式路堤土拱效应分析[J]. 中国公路学报, 2004, 17(4): 1-6.
    (CHEN Yun-min, JIA Ning, CHEN Ren-peng.Soil arch analysis of pile supported embankments[J]. China Journal of Highway and Transport, 2004, 17(4): 1-6. (in Chinese))
    [21] ROGBECK Y, FRANZÉN G, SCANDIACONSULT C A, et al. Nordic guideline for reinforced soils and fills[R]. Baraboo: Nordic Geotechnical Group, 2005.
    [22] 刘吉福, 郑刚, 龚晓南. 附加应力法计算刚性桩复合地基路基沉降[J]. 岩土工程学报, 2018, 40(11): 1995-2002.
    (LIU Ji-fu, ZHENG Gang, GONG Xiao-nan.Superimposed stress method to calculate settlement of embankment with rigid-pile composite foundation[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(11): 1995-2002. (in Chinese))
    • 相关文章
    • 施引文献(40)

  • 期刊类型引用(22)

    1. 曹虎，张广清，李世远，汪文瑞，谢彭旭，孙伟，李帅. 基于断裂过程区的压裂驱油水力裂缝扩展模型及应用. 岩土力学. 2025(03): 798-810 . 百度学术
    2. 何昭宇，王冬明，张太国，范世英. 济南地区土岩二元结构边坡加固设计及稳定性研究. 建筑结构. 2024(04): 73-79+66 . 百度学术
    3. 施静怡，吴能森，刘强. 静压桩在成层地基中挤土效应的可视化研究. 河南城建学院学报. 2024(02): 20-26 . 百度学术
    4. 刘江涛，李存军，于江华，张彦红，张春彬，孔纲强. 施工顺序对微型钢管桩加固既有基础变形的影响试验研究. 土木与环境工程学报(中英文). 2024(04): 100-108 . 百度学术
    5. 高玉峰，王玉杰，张飞，姬建，陈亮，倪钧钧，张卫杰，宋健，杨尚川. 边坡工程与堤坝工程研究进展. 土木工程学报. 2024(08): 97-118 . 百度学术
    6. 胡焕校，谢中良，甘本清，卢雨帆，邓超. 透明砂土基本特性及其在注浆模型试验中的应用. 水资源与水工程学报. 2024(04): 179-186 . 百度学术
    7. 李梦晨，赵之仲，薛军，姜益顺. 土质边坡滑坡灾害的分级预警判据. 山东交通学院学报. 2024(03): 46-55 . 百度学术
    8. 何建新，董旭光，马渊博. 坡顶荷载作用下多级边坡失稳演化机制的透明土试验研究. 西北工程技术学报. 2024(04): 347-355 . 百度学术
    9. 刘强，吴能森，黄志波，许旭堂，徐祥. 抗滑桩加固二元结构边坡可视化模型试验. 林业工程学报. 2023(02): 172-179 . 百度学术
    10. 赖成联. 基于沉井基础的重力坝坝肩滑坡处理技术. 红水河. 2023(02): 11-15 . 百度学术
    11. 周昌，马文超，胡元骏，史光明. 基于透明土的库水位骤降下消落带滑坡-伞型锚体系变形破坏机理. 工程地质学报. 2023(04): 1407-1417 . 百度学术
    12. 张立乾，田义斌，闫晶，李兵，孟良. 某场地高边坡和洪水综合治理工程研究. 岩土工程技术. 2023(05): 545-552 . 百度学术
    13. 周鹏，柯文斌. 可视化透明土技术在岩土变形测量实验教学中的应用. 教育教学论坛. 2023(50): 9-12 . 百度学术
    14. 梁越，代磊，魏琦. 基于透明土和粒子示踪技术的渗流侵蚀试验研究. 岩土工程学报. 2022(06): 1133-1140 . 本站查看
    15. 徐志军，王云泰，杜建平，王政权，周洋，王爽. 缩径基桩竖向承载性能的透明土试验研究. 湖南大学学报(自然科学版). 2022(07): 214-221 . 百度学术
    16. 卢谅，何兵，肖亮，王宗建，马书文，林浩鑫. 基于透明土的成层土中CPT贯入试验研究. 岩土工程学报. 2022(12): 2215-2224 . 本站查看
    17. 胡仕明，杨伟红，李涛，李昕堃. 公路隧道洞口顺层边坡变形规律分析. 岩土工程技术. 2022(06): 477-482 . 百度学术
    18. 刘强，吴能森，许旭堂. 基于透明土的黏土边坡土体变形特征试验. 福建工程学院学报. 2022(06): 532-536 . 百度学术
    19. 李元松，王玉，朱冬林，闫海涛，戴哲. 边坡稳定性评价方法研究现状与发展趋势. 武汉工程大学学报. 2021(04): 428-435 . 百度学术
    20. 周义. 尼日利亚某铁路项目挖方边坡溜坍防护方案研究. 住宅与房地产. 2020(06): 226-227 . 百度学术
    21. 翟淑花，孙小华，冒建，程素珍，刘欢欢. 北京山区岩土混合质边坡变形破坏机理分析. 徐州工程学院学报(自然科学版). 2020(04): 24-29 . 百度学术
    22. 徐建强，阎宗岭，李海平，马小斐. 黔西岩溶区公路土岩混合边坡致灾模式及调控技术. 公路交通技术. 2019(06): 25-30+42 . 百度学术

    其他类型引用(18)

    • 资源附件(0)
计量
  • 文章访问数:  299
  • HTML全文浏览量:  10
  • PDF下载量:  315
  • 被引次数: 40
出版历程
  • 收稿日期:  2019-02-17
  • 发布日期:  2019-11-24

目录

摘要
HTML全文
    参考文献(22)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回
    版权所有 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
    编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn