Influence of Gulch Topography on Effective Length of Bridge Pile Foundationin in Loess Hilly Area

Lei WANG; Xiaojian LIU; Zhihua LIU; Guojun YANG; Zhenshan GUO

doi:10.13409/j.cnki.jdpme.2020.04.016

您当前的位置：

首页 >

文章列表页 >

Influence of Gulch Topography on Effective Length of Bridge Pile Foundationin in Loess Hilly Area

更新时间：2025-09-25

- Influence of Gulch Topography on Effective Length of Bridge Pile Foundationin in Loess Hilly Area
- Journal of Disaster Prevention and Mitigation Engineering Vol. 40, Issue 4, Pages: 614-622(2020)
- 作者机构：
  
  1.山西交通科学研究院集团有限公司桥梁工程防灾减灾山西省重点实验室，山西太原 030006
  2.陕西省高速公路建设集团公司，陕西西安 710075
  3.兰州理工大学防震减灾研究所，甘肃兰州 730050
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2020.04.016
  CLC： U443.15
- Received：17 July 2018，
  
  Revised：2018-10-15，
  
  Published：15 August 2020
- 稿件说明：
移动端阅览
王磊,刘晓健,刘志华等.黄土山区冲沟地形对桥梁桩基有效桩长影响研究[J].防灾减灾工程学报,2020,40(04):614-622.

WANG Lei,LIU Xiaojian,LIU Zhihua,et al.Influence of Gulch Topography on Effective Length of Bridge Pile Foundationin in Loess Hilly Area[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(04):614-622.
王磊,刘晓健,刘志华等.黄土山区冲沟地形对桥梁桩基有效桩长影响研究[J].防灾减灾工程学报,2020,40(04):614-622. DOI： 10.13409/j.cnki.jdpme.2020.04.016.

WANG Lei,LIU Xiaojian,LIU Zhihua,et al.Influence of Gulch Topography on Effective Length of Bridge Pile Foundationin in Loess Hilly Area[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(04):614-622. DOI： 10.13409/j.cnki.jdpme.2020.04.016.

摘要

为全面了解黄土山区冲沟地形对桥梁桩基有效长度的影响，在对山西省典型黄土山区桥梁下部全面调查的基础上，依据黄土地区现场桩基静载试验，应用FLAC

建立黄土山区地形桥梁桩基有限差分模型，分析了不同坡度、临坡距、桩长变化对桩基有效桩长的影响，揭示了桩基承载力、桩侧摩阻力、桩端阻力及有效桩长变化规律，并依据计算结果提出相关工程技术建议。研究结果表明：一定桩长时，斜坡坡度、临坡距变化对桩侧摩阻力产生不同程度影响，对桩端阻力影响不大；坡度越大，临坡距越小，桩侧摩阻力减小幅度越显著，最大为70.89%；坡度较小、临坡距较大时，增长桩长使桩侧摩阻力从95.99%提高至99.71%；桩侧摩阻力变化的根本原因是桩基有效长度发生改变，桩基有效桩长折减程度同斜坡坡度及桩基临坡距有关，与桩长无关；建立的桩基有效长度计算公式可为黄土山区冲沟地形条件桩基础设计提供技术借鉴。

Abstract

Based on widely investigation on bridges foundation in loess area of Shanxi province and on-site pile static loading test

the parameters of slope gradient

slope distance and pile length were analyzed to study the influence of gulch topography on effective length of bridge pile in loess hilly area. By means of the FLAC3D finite analysis

the change rules of ultimate bearing capacity

pile lateral friction

tip resistance and effective pile length were obtained

and furthermore some suggestions for engineering were provided. The research shows that: with certain pile length

the slope gradient and slope distance have great influence on pile lateral friction

and has little influence on tip resistance. Moreover

the lateral friction of the pile gradually reduces with increase of slope angle and decrease of distance to the slope. The reduction can reach 70.89%. The lateral friction can rise from 95.99% to 99.71% by elongating the pile length for the ground with small slope angle or long distance to the slope. The basic influence factor on lateral friction is the effective length of the pile. The reduction coefficient of the effective length of the pile is independent of pile length

and closely related to the slope gradient and the distance to the slope. Finally

the calculation formula of pile effective length is provided

which gives an effective technical reference for pile design in gulch topography of loess hilly area.

关键词

Keywords

references

张刚刚，宋宇鹏，卢　洋 . 黄土梁峁沟壑区高速公路桥梁设计探讨 [J]. 公路， 2017 （ 7 ）： 115 - 119 .

Zhang G G , Song Y P , Lu Y . Study on bridge design of expressway in loess gully areas [J]. China Journal of Highway , 2017 （ 7 ）: 115 - 119 . (in Chinese)

王琴梅，曹　琼 . “一带一路”道路联通的现状、阻滞因素及推进建议 [J]. 发展研究， 2015 （ 10 ）： 17 - 21 .

Wang Q M , Cao Q . The status quo of road connection, hindering factors and promote suggestion of “B&R” [J]. Development Research , 2015 （ 10 ）: 17 - 21 . (in Chinese)

冯忠居 . 特殊地区基础工程 [M]. 北京：人民交通出版社， 2008 .

Feng Zh J . Foundation engineering in special areas [M]. Beijing : China Communication Press Co ., Ltd. , 2008 . (in Chinese)

赵宝俊，葛守飞，郝宪武 . 黄土地区沟谷地形桥梁下部结构病害与防治对策研究 [J]. 公路交通科技， 2013 （ 11 ）: 144 - 146 .

Zhao B J , Ge Sh F , Hao X W . Research on disease investigation and prevention measure of bridge pile foundation in loess valley terrains [J]. Journal of Highway and Transportation Research and Development , 2013 （ 11 ）: 144 - 146 . (in Chinese)

陈帝江 . 斜坡地区大直径桥梁桩基竖向承载特性研究 [D]. 西安 : 长安大学 , 2009 .

Chen D J . Research on vertical load-bearing characteristics of the large-diameter bridge foundation [D]. Xi’an : Chang’an University , 2009 . (in Chinese)

牛富生，许建聪，马　亢 . 黄土斜坡桩基竖向荷载传递规律现场试验研究 [J]. 岩土力学， 2014 , 35 （ 7 ）： 1 899 - 1 906 .

Niu F Sh , Xu J C , Ma K . Field experimental study of transmitted characteristics of pile foundation under vertical load in loess slope [J]. Chinese Journal of Geotechnical Engineering , 2014 , 35 （ 7 ）: 1 899 - 1 906 . (in Chinese)

冯忠居，王　航，魏　进 . 黄土冲沟斜坡桥梁桩基竖向承载特性模型试验研究 [J]. 岩土工程学报， 2015 , 37 （ 12 ）： 2 308 - 2 314 .

Feng Zh J , Wang H , Wei J . Model tests on vertical bearing performance of bridge pile foundation in loess gulch slope area [J]. Chinese Journal of Geotechnical Engineering , 2015 , 37 （ 12 ）: 2 308 - 2 314 . (in Chinese)

龚先兵，杨明辉，赵明华 . 山区高陡横坡段桥梁桩基承载机理模型试验 [J]. 中国公路学报， 2013 , 26 （ 2 ）： 56 - 62 .

Gong X B , Yang M H , Zhao M H . Load bearing mechanism model test for bridge pile foundation in high steep transverse slope [J]. Chinese Journal of Highway and Transport , 2013 , 26 （ 2 ）: 56 - 62 . (in Chinese)

栾　娟，郝宪武，赵宝俊 . 黄土沟壑地形斜陡坡对桩基承载力的影响 [J]. 长安大学学报， 2016 , 36 （ 6 ）： 62 - 68 .

Luan J , Hao X W , Zhao B J . Effect of loess gully slope terrain on bearing performance of pile foundation [J]. Journal of Chang’an University , 2016 , 36 （ 6 ）: 62 - 68 . (in Chinese)

李　晋，谢永利，冯忠居 . 自重湿陷性黄土地区合理桩长初探 [J]. 岩土力学与工程学报， 2005 , 24 （ 9 ）： 1 629 - 1 634 .

Li J , Xie Y L , Feng Zh J . Study of the proper pile length in the self-weight collapsible loess [J]. Chinese Journal of Rock Mechanics and Engineering , 2005 , 24 （ 9 ）: 1 629 - 1 634 . (in Chinese)

公路桥涵地基基础设计规范:JTG D63—2007 [S]. 北京：人民交通出版社 .

Code of design of ground base and foundation of highway bridges and culverts: JTG D63—2007 [S]. BeiJing:China Communications Press Co.,Ltd.,2007. (in Chinese)

Potyondy J G . Skin friction between various soils and construction materials [J]. Ge'otechnique , 1961 , 11 ( 4 ): 339 - 353 .

Acer Y B , Durgunoglu H T , Tumay M T . Interface properties of sands [J]. Journal of Geotechnical and Geo-environmental Engineering , 1982 , 108 ( 4 ): 648 - 645 .

陈育民，徐鼎平 . FLAC /FLAC3D基础与工程实例 [M]. 北京：中国水利水电出版社， 2013 .

Chen Y M , Xu D P . Foundation engineering example of FLAC and FLAC3D [M]. Beijing : China Water & Power Press , 2013 . (in Chinese)

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental Study on Moraine Soil Landslide Model under Rainfall Conditions

Related Author

JIN Jianli

CAO Zhixiang

ZONG Yongchen

CHEN Liang

WANG Kangyu

Related Institution

College of Water Conservancy and Civil Engineering , Xizang Agricultural and Animal Husbandry University, Linzhi

Research Center of Civil, Hydraulic and Power Engineering of Tibet, Linzhi

Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University

College of Civil Engineering, Zhejiang University of Technology

⁰