基于不同拱脚形式下抗滑桩土拱效应研究

doi:10.3969/j.issn.1674-0696.2016.01.20

摘要/Abstract

摘要： 目前针对抗滑桩桩间土拱拱脚形式的研究基本为桩身、桩侧摩阻力和两者同时参与（联合）3种形式。为了研究3种拱脚形式下土拱的受力机理及影响因素，采用土工有限元Plaxis V8.5 对其进行数值研究，在研究过程中3种形式拱脚采用分别建模，为了体现桩侧与土体的摩擦特性，采用软件提供的界面单元来模拟。研究表明：悬臂式抗滑桩土拱的拱脚支撑力主要由桩身来提供，桩侧提供的支撑力有限；随着桩间距的增加，土拱不易形成，以桩身为拱脚的法向应力在以联合为拱脚的法向应力中所占比例逐渐减小。

关键词: 岩土工程, 抗滑桩, 土拱效应, 拱脚, 桩间距, 数值分析

Abstract: At present, the research on the skewback forms of soil arching of anti-slide piles mainly focuses on 3 types of forms, including pile body, side friction of pile and the union of both. In order to research the bearing load mechanism and influencing factors of soil arching with three forms of skewback, the geotechnical analysis software package named Plaxis V8.5 was used to carry out numerical analysis. During the analysis, FEM models of three forms of skewback were established respectively. To reflect friction characteristics between side pile and soil, the interface element offered by the software was used to simulate. The results show that the pile body mainly provides the holding power for soil arching skewback of cantilever anti-slide piles, and the holding power offered by side pile is limited; with the increase of pile spacing, the soil arching is not easily formed and the proportion of normal stress when the pile body is skewback decreases gradually in the proportion of normal stress when pile body and side friction of pile are united as the skewback.

Key words: geotechnical engineering, anti-slide piles, soil arching, skewback, pile spacing, numerical analysis

中图分类号:

TU473

任永忠，马守才. 基于不同拱脚形式下抗滑桩土拱效应研究[J]. 重庆交通大学学报（自然科学版）, 2016, 35(1): 101-106.

REN Yongzhong, MA Shoucai. Soil Arching of Anti-Slide Piles Based on Different Skewback Forms[J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(1): 101-106.

参考文献

［1］ TERZAGHI K.Theoretical Soil Mechanics ［M］.New York:John Wiley & Son,1943:66-76.
［2］ WANG D L,YEN B C.Soil arching in slopes ［J］.Journal of Geotechnical Engineering Division,ASCE,1974,104(GT4):493-496.
［3］王成华,陈永波,林立相.抗滑桩间土拱力学特性与最大桩间距分析［J］.山地学报,2001,19(6):556-559.
WANG Chenghua,CHEN Yongbo,LIN Lixiang.Soil arch mechanical character and suitable space between one another anti-sliding pile ［J］.Journal of Mountain Science,2001,19(6):556-559.
［4］赵明华,陈炳初,刘建华.考虑土拱效应的抗滑桩合理桩间距分析［J］.中南公路工程,2006,31(2):1-3,28.
ZHAO Minghua,CHEN Bingchu,LIU Jianhua.Analysis of the spacing between anti-slide piles considering soil-arch effect ［J］.Central South Highway Engineering,2006,31 (2):1-3,28.
［5］王士川,陈立新.抗滑桩间距的下限解［J］.工业建筑,1997,27(10):33-37.
WANG Shichuan,CHEN Lixin.Anti-slide pile spacing of the lower limit equation ［J］.Industrial Construction,1997,27(10):33-37.
［6］周德培,肖世国,夏雄.边坡工程中抗滑桩合理桩间距的探讨［J］.岩土工程学报,2004,26(1):132-135.
ZHOU Depei,XIAO Shiguo,XIA Xiong.Discussion on rational spacing between adjacent anti-slide piles in some cutting slope projects ［J］.Chinese Journal of Geotechnical Engineering,2004,26(1):132-135.
［7］周应华,周德培,冯君.推力桩桩间土拱几何力学特性及桩间距的确定［J］.岩土力学,2006,27(3):455-457.
ZHOU Yinghua,ZHOU Depei,FENG Jun.Geometrically mechanical characters of soil arch between two adjacent laterally loaded piles and determination of suitable pile spacing ［J］.Rock and Soil Mechanics,2006,27(3):455-457.
［8］蒋良潍,黄润秋,蒋忠信.黏性土桩间土拱效应计算与桩间距分析［J］.岩土力学,2006,27(3):445-450.
JIANG Liangwei,HUANG Runqiu,JIANG Zhongxin.Analysis of soil arching effect between adjacent piles and their spacing in cohesive soils ［J］.Rock and Soil Mechanics,2006,27(3):445-450.
［9］李邵军,陈静,练操.边坡桩-土相互作用的土拱力学模型与桩间距问题［J］.岩土力学,2010,31(5):1352-1358.
LI Shaojun,CHEN Jing,LIAN Cao.Mechanical model of soil arch for interaction of piles and slope and problem of pile spacing ［J］.Rock and Soil Mechanics,2010,31 (5):1352-1358.
［10］冯君,吕和林,王成华.普氏理论在确定抗滑桩间距中的应用［J］.中国铁道科学,2003,24(6):80-82.
FENG Jun,LV Helin,WANG Chenghua.Application of M.M.Promojiyfakonov theory to solution of distance between anti-slide piles ［J］.China Railway Science,2003,24(6):80- 82.
［11］吕庆,孙红月,尚岳全.抗滑桩桩后土拱形状及影响因素［J］.哈尔滨工业大学学报,2010,42(4):629-633.
LV Qing,SUN Hongyue,SHANG Yuequan.Shape of soil arch behind anti-slide piles and its major influence factors ［J］.Journal of Harbin Institute of Technology,2010,42 (4):629-633.
［12］杨明,姚令侃,王广军.桩间土拱效应离心模型试验及数值模拟研究［J］.岩土力学,2008,29(3):817-822.
YANG Ming,YAO Lingkan,WANG Guangjun.Study of centrifuge model tests and numerical simulation on soil arching in space of piles ［J］.Rock and Soil Mechanics,2008,29 (3):817-822.
［13］王成,王东,陈夏雨,等.桩间土拱效应离心模型试验研究［J］.地下空间与工程学报,2012,8(1):33-36.
WANG Cheng,WANG Dong,CHEN Xiayu,et al.Study on centrifuge model tests of soil arching effect between piles ［J］.Chinese Journal of Underground Space and Engineering,2012,8(1):33-36.
［14］张永兴,董捷,黄治云.合理间距条件悬臂式抗滑桩三维土拱效应试验研究［J］.岩土工程学报,2009,31(12):1874-1881.
ZHANG Yongxing,DONG Jie,HUANG Zhiyun.Experimental investigation on three-dimensional soil arching effect between adjacent cantilever anti-slide piles with rational spacing ［J］.Chinese Journal of Geotechnical Engineering,2009,31(12):1874-1881.
［15］曹卫平,胡伟伟.桩承式加筋路堤三维土拱效应试验研究［J］.岩土力学,2014,35(2):351-358.
CAO Weiping,HU Weiwei.Experimental study of 3D soil arching in piled reinforced embankments ［J］.Rock and Soil Mechanics,2014,35(2):351-358.
［16］刘钦,李地元,刘志祥,等.水平推力作用下抗滑桩间土拱效应影响因素的数值分析［J］.中南大学学报(自然科学版),2011,42(7):2071-2077.
LIU Qin,LI Diyuan,LIU Zhixiang,et al.Numerical analysis of influence factors on soil arching effect between anti-sliding piles under horizontal pushing loads ［J］.Journal of Central South University (Science and Technology),2011,42(7):2071-2077.
［17］陈福全,侯永峰,刘毓氚.考虑桩土侧移的被动桩中土拱效应数值分析［J］.岩土力学,2007,28(7):1333-1337.
CHEN Fuquan,HOU Yongfeng,LIU Yuchuan.Numerical analysis of soil arching effects in displaced passive piles considering lateral soil movements ［J］.Rock and Soil Mechanics,2007,28(7):1333-1337.
［18］张建华,谢强,张照秀.抗滑桩结构的土拱效应及其数值模拟［J］.岩石力学与工程学报,2004,23(4):699-703.
ZHANG Jianhua,XIE Qiang,ZHANG Zhaoxiu.Arching effect of anti-sliding pile structure and its numerical simulation ［J］.Chinese Journal of Rock Mechanics and Engineering,2004,23(4):699-703.
［19］姜春林,李晋.微型抗滑桩土拱效应空间特征的细观力学分析［J］.岩土力学,2012,33(6):1754-1760,1815.
JIANG Chunlin,LI Jin.Mesomechanical analysis of spatial characteristics of soil arching effect on micro anti-slide pile aystem ［J］.Rock and Soil Mechanics,2012,33 (6):1754-1760.
［20］韩高孝,宫全美,周顺华.摩擦型岩土材料土拱效应微观机制颗粒流模拟分析［J］.岩土力学,2013,34(6):1791-1798.
HAN Gaoxiao,GONG Quanmei,ZHOU Shunhua.Analysis of microcosmic mechanism of soil arching in frictional geotechnical material by particle flow simulating ［J］.Rock and Soil Mechanics,2013,34(6):1791-1798.
［21］向先超,张华,蒋国盛,等.基于颗粒流的抗滑桩土拱效应研究［J］.岩土工程学报,2011,33(3):386-391.
XIANG Xianchao,ZHANG Hua,JIANG Guosheng,et al.Soil arching effect of anti-slide piles based on particle flow method ［J］.Chinese Journal of Geotechnical Engineering,2011,33(3):386-391.

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