不同截面抗滑桩的土拱效应对比研究∗
Comparative Study on Soil Arching Effect of Anti-slide Piles with Different Sections
- 防灾减灾工程学报 2023年43卷第2期 页码：405-412
- 作者机构：
西南石油大学地球科学与技术学院,四川,成都,610500
- 作者简介：
- 基金信息：四川省科技厅应用基础研究项目(19YYJC1060)、云南省建设投资控股集团科技项目(2019DJR010)资助
DOI：
中图分类号： TU473-
纸质出版：2023
- 稿件说明：
移动端阅览
苏培东. 不同截面抗滑桩的土拱效应对比研究∗[J]. 防灾减灾工程学报, 2023,43(2):405-412.
苏培东,张海传,戚宗轲,王茂珲,邱鹏.不同截面抗滑桩的土拱效应对比研究∗[J].防灾减灾工程学报,2023,43(2):405-412
摘要
土拱效应是桩土作用理论研究的重要依据，但由于对不同截面形式抗滑桩的土拱效应作用机理研究较少，在抗滑桩设计中大多采用传统截面形式，考虑到传统矩形抗滑桩在形成土拱效应方面的不足，提出梯形截面优化抗滑桩截面形式。基于材料力学理论，利用轴向受压杆件的斜截面应力计算模型推导出梯形桩桩侧土拱拱脚受压区应力状态，并结合摩尔—库伦强度准则得出梯形桩桩侧极限承载力，通过算例对比分析梯形与矩形桩桩侧土拱极限承载力，结合数值模拟分析验证理论与计算结果。研究结果表明：梯形截面桩桩侧极限承载力相较于矩形截面有较为明显的提升，最大约为矩形桩的 2.5 倍；相同条件下梯形截面桩桩间土位移与剪应变增量更小，应力集中现象更明显，梯形截面桩对土拱效应的形成与发展更有利。
Abstract
Soil arching effect is an important basis for theoretical research of pile-soil interaction. But due to less research on the soil arching effect mechanism of anti-slide piles with different cross-sec-tions， the traditional cross-section is mostly used in the design of anti-slide piles. Considering the shortcomings of traditional rectangular anti-slide piles in forming soil arching effect， the trapezoidal cross-section was proposed to optimize the design of the anti-slide piles. Based on the theory of materi-al mechanics， the stress state in the compression zone at the foot of the soil arch on the side of the trap-ezoidal piles was deduced by using the oblique section stress calculation model of the axial compres-sion bar， and the ultimate bearing capacity of the trapezoidal piles was obtained by combining the Mohr-Coulomb strength criterion. The ultimate bearing capacity of the soil arch on the side of the trap-ezoidal and rectangular piles was analyzed by a numerical example， and the theory and calculation re-sults were verified by a numerical simulation analysis. The results show that the ultimate bearing ca-pacity of the trapezoidal piles is significantly improved compared with that of the rectangular piles， and the maximum bearing capacity is about 2.5 times that of the rectangular piles； Under the same condi-tions， the increment of soil displacement and shear strain between trapezoidal piles is smaller， while the stress concentration is more obvious. The trapezoidal sectional pile is more favorable to the forma-tion and development of soil arching effect.
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references
王恭先.王恭先滑坡学与滑坡防治技术文集[M].北京:人民交通出版社,2010.Wang G X.Wang Gongxian′s collection of landslide sci? ence and landslide prevention technology[M].Beijing:China Communications Press,2010.(in Chinese)
刘新荣,梁宁慧,黄金国,等.抗滑桩在边坡工程中的研究进展及应用[J].中国地质灾害与防治学报,2006,17(1):56-62.Liu X R,Liang N H,Huang J G,et al.Progress and ap? plications of anti-sliding piles in slope reinforcing project [J].The Chinese Journal of Geological Hazard and Con? trol,2006,17(1):56-62.(in Chinese)
罗强.公路抗滑桩的类型及应用[J].公路,2001(8):113-114.Luo Q.Classification and application of highway antislide Piles[J].Highway,2001(8):113-114.(in Chi? nese)
熊良宵,李天斌.土拱效应在抗滑桩工程中的应用[J].防灾减灾工程学报,2005,25(3):275-277.Xiong L X,Li T B.Application of soil arching effect on the anti-sliding pile engineering[J].Journal of Disaster Prevention and Mitigation Engineering,2005,25(3):275-277.(in Chinese)
Terzaghi K T.Theoretical Soil Mechanics[M].New York:Richard Dennis Publications,1966.
Potts D M,Atkinson J H.Stability of a shallow circular tunnel in cohesionless soil[J].Geotechnique,1977,27(2):203-215.
Li T,Yang X L.Stability of plane strain tunnel headings in soils with tensile strength cut-off[J].Tunneling & Underground Space Technology,2020,95:103138.
Huang F,Zhang M,Wang F,et al.The failure mecha? nism of surrounding rock around an existing shield tun? nel induced by an adjacent excavation[J].Computers & Geotechnics,2020,117:103236.
Chen C Y,Martin G R.Soil-structure interaction for landslide stabilizing piles[J].Computers & Geotech? nics,2002,29(5):363-386.
贾海莉,王成华,李江洪.关于土拱效应的几个问题 [J].西南交通大学学报,2003,38(4):398-402.Jia H L,Wang C H,Li J H.Discussion on some issues in theory of soil arch[J].Journal of Southwest Jiaotong University,2003,38(4):398-402.(in Chinese)
Zhou Y T,Chen Q S,Chen F Q,et al.Active earth pressure on translating rigid retaining structures consid? ering soil arching effect[J].European Journal of Environ? mental & Civil Engineering,2018,22(7/8):910-926.
王培勇,董彤,李秀地.基于土拱耦合效应的合理桩间距分析[J].地下空间与工程学报,2018,14(6):1634-1638.Wang P Y,Dong T,Li X D.Analysis on rational spac? ing between adjacent anti-slide piles based on interaction effect of soil arches[J].Chinese Journal of Underground Space and Engineering,2018,14(6):1634-1638.(in Chinese)
陈龙,刘成禹,林雪彬,等.考虑桩后及桩侧土拱间相互作用的合理桩间距[J].水利与建筑工程学报,2018,16(6):15-20,31.Chen L,Liu C Y,Lin X B,et al.Reasonable pile spac? ing considering interaction between pileside arch and soil arch behind pile[J].Journal of Water Resources and Architectural Engineering,2018,16(6):15-20,31.(in Chinese)
邱子义,韩同春,豆红强,等.桩后及桩侧土拱共同作用的抗滑桩桩间距分析[J].浙江大学学报(工学版),2016,50(3):559-565.Qiu Z Y,Han T C,Dou H Q,et al.Analysis of spacing between anti-slide piles considering soil arch on lateral sides and back[J].Journal of Zhejiang University:Engi? neering Science Edition,2016,50(3):559-565.(in Chinese)
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 C H,Chen Y B,Lin L X.Soil arch mechanical character and suitable space between one another antisliding pile[J].Journal of MountainScience,2001,19(6):556-559.(in Chinese)
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(6):80-82.Feng J,Lyu H L,Wang C H.Application of M.M.Pro? mojiyfakonov theory to solution of distance between an? ti-slide piles[J].China Railwayscience,2003(6):80-82.(in Chinese)
文兴,裴向军,刘云鹏.特殊截面抗滑桩受力特征与土拱效应分析[J].工程地质学报,2013,21(5):797-803.Wen X,Pei X J,Liu Y P.Stress characteristics andsoilarch effect analysis of anti-sliding piles with specialcross-section[J].Journal of Engineering Geology,2013,21(5):797-803.(in Chinese)
李登峰,胡卸文,赵晓彦,等.花岗岩残积土边坡水平拱高竖向变化规律[J].西南交通大学学报,2016,51(5):1024-1032.Li D F,Hu X W,Zhao X Y,et al.Variation of horizon?tal arch height of granite residual soilslope in vertical di?rection[J].Journal of Southwest Jiaotong University,2016,51(5):1024-1032.(in Chinese)
王羽,赵波.双排桩多层土拱效应分析及计算理论[J].北京工业大学学报,2015(8):79-85.Wang Y,Zhao B.Multilayer soil arching effect calcula?tion and soil pressure analysis in double-row anti-slidingpiles[J].Journal of Beijing University of Technology,2015(8):79-85.(in Chinese)
Li C,Tang H,Hu X,et al.Numerical modelling study ofthe load sharing law of anti-sliding piles based on thesoil arching effect for Erliban landslide,China[J].KSCE Journal of Civil Engineering,2013,17(6):1251-1262.
廖方,杨志永,孟德宇,等.梯形断面抗滑桩桩间距计算方法研究[J].人民长江,2018,49(3):72-76.Liao F,Yang Z Y,Meng D Y,et al.Study on spacingcalculation method of anti-slide piles of trapezoidalcross-section[J].Yangtze River,2018,49(3):72-76.(in Chinese)
彭瑜,陈洪凯.基于桩间距计算的梯形抗滑桩桩侧角取值[J].水运工程,2018,549(12):211-216.Peng Y,Chen H K.Side angle of trapezoidal anti-slidepile based on distance calculation between piles[J].Port& Waterway Engineering,2018,549(12):211-216.(inChinese)
林治平,刘祚秋,商秋婷.抗滑桩结构土拱的分拆与联合研究[J].岩土力学,2012,33(10):3109-3115.Lin Z P,Liu Z Q,Shang Q T.Researchon soil arch ofanti-slide pile structure with methods ofseparation andcombination[J].Rock and SoilMechanics,2012,33(10):3109-3115.(in Chinese)
Liu L S,Wu S G.Calculation of earth pressure on baffleof cantilever anti-slide piles based on soil arching effects[J].Chinese Journal of Geotechnical Engineering,2015,37:153-157.
Chen G,Zou L,Wang Q,et al.Pile-spacing calculationof anti-slide pile based on soil arching effect[J].Advanc?es in Civil Engineering,2020,2020:1-6.
杨雪强,吉小明,张新涛.抗滑桩桩间土拱效应及其土拱模式分析[J].中国公路学报,2014,27(1):30-37.Yang X Q,Ji X M,Zhang X T.Analysis of soil archingeffect between anti-slide pilesand different arch bodymodes[J].China Journal of Highway and Transport,2014,27(1):30-37.(in Chinese)
方景成,邓华锋,李建林,等.桩土刚度比及布桩位置对桩身内力分布的影响研究[J].防灾减灾工程学报,2019,39(3):487-493.Fang J C,Deng H F,Li J L,et al.Effect of pile-soilstiffness ratioand pile distribution on pile internal forcedistribution[J].Journal of Disaster Prevention and Miti?gation Engineering,2019,39(3):487-493.(in Chinese)
胡田飞,杜升涛,梁龙龙.微型桩-锚组合抗滑新结构支挡效果的数值分析[J].防灾减灾工程学报,2015,35(2):212-218.Hu T F,Du S T,Liang L L.Numerical analysis of re?taining effect supported by new micropile-anchorcom?posite anti-sliding structure[J].Journal of Disaster Pre?vention and Mitigation Engineering,2015,35(2):212-218.(in Chinese)
吴润泽,周海清,胡源,等.基于FLAC3D的锚索抗滑桩滑坡推力分布规律研究[J].防灾减灾工程学报,2013,33(5):548-555.Wu R Z,Zhou H Q,Hu Y,et al.Research on distribu?tion law of landslid thrust of anchored anti-slid pilebased on FLAC3D[J].Journal of Disaster Preventionand Mitigation Engineering,2013,33(5):548-555.(inChinese)
Pardo G S,SáezE.Experimental and numerical study ofarching soil effect in coarse sand[J].Computers andGeotechnics,2014,57(4):75-84.
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