土拱应力递减模型及其在滑坡荷载分担模型中的应用

doi:10.12068/j.issn.1005-3026.2021.03.020

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (3): 436-443.DOI: 10.12068/j.issn.1005-3026.2021.03.020

土拱应力递减模型及其在滑坡荷载分担模型中的应用

李兴明¹，晏鄂川¹，田庄²，张懿¹

(1. 中国地质大学(武汉) 工程学院，湖北武汉430074; 2. 四川电力设计咨询有限责任公司，四川成都610041)

收稿日期:2020-06-16 修回日期:2020-06-16 接受日期:2020-06-16 发布日期:2021-03-12
通讯作者: 李兴明
作者简介:李兴明(1991-)，男，四川绵竹人，中国地质大学(武汉)博士研究生; 晏鄂川(1969-)，男，四川成都人，中国地质大学(武汉)教授，博士生导师.
基金资助:
国家自然科学基金资助项目(2019053086).

Stress-Reduction Model for Soil Arch and Its Application in Load Sharing Model for Landslide

LI Xing-ming¹， YAN E-chuan¹， TIAN Zhuang²， ZHANG Yi¹

1. Faculty of Engineering， China University of Geosciences， Wuhan 430074， China; 2. Sichuan Electric Power Engineering Co.， Ltd.， Chengdu 610041， China.

Received:2020-06-16 Revised:2020-06-16 Accepted:2020-06-16 Published:2021-03-12
Contact: YAN E-chuan
About author:-
Supported by:
-

摘要/Abstract

摘要： 土拱效应是抗滑桩工程发挥作用的关键内容.以土拱的应力变化为研究点，首先明确了土拱拱轴线，然后推导了新的土拱应力递减模型，由此量化了土拱关键拱形参数的计算方法，最后提出了新的滑坡荷载三级分担模型.研究结果表明:桩间土拱和桩后土拱的应力呈指数递减规律，基于土拱应力递减模型提出的拱迹线倾角和土拱厚度两个计算公式由于考虑影响因子全面因而更加切合实际;依据计算的桩后土拱和桩间土拱极限承载力可知，阶段划分的滑坡荷载三级分担模型与滑坡体-抗滑桩作用阶段特征相符合.研究可加强对土拱效应理论的理解，也可为滑坡抗滑桩设计起指导作用.

关键词: 土拱效应;应力递减;拱形参数;荷载分担模型;抗滑桩设计

Abstract: Soil arching effect is the key research point for anti-slide piles coming into effect. Taking the stress change of soil arch as the research point， first， a reasonable arch axis for soil arch was specified， and then a new stress-reduction model for soil arch was further derived， based on which the calculation of the critical arch shape parameters of the soil arch was quantified， and last a new three-level load sharing model for landslide was proposed. Research shows that the model calculation has demonstrated an exponential reduction in the stress between and behind piles. The two equations of inclination angle at the foothold and the thickness of soil arch are more practical due to full consideration of effecting factors. According to the bearing capacity of soil arch behind and between anti-slide piles， the three-level load sharing model can be consistent with the phase characteristics of interaction between landslide mass and anti-slide pile. The research can deepen the understanding in soil arching effect theory， and can also provide theoretical guidance to the design of anti-slide piles in landslide programs.

Key words: soil arching effect; stress reduce; shape parameters of arch; load sharing model; design of anti-slide pile

中图分类号:

TU431

李兴明，晏鄂川，田庄，张懿. 土拱应力递减模型及其在滑坡荷载分担模型中的应用[J]. 东北大学学报（自然科学版）, 2021, 42(3): 436-443.

LI Xing-ming， YAN E-chuan， TIAN Zhuang， ZHANG Yi. Stress-Reduction Model for Soil Arch and Its Application in Load Sharing Model for Landslide[J]. Journal of Northeastern University(Natural Science), 2021, 42(3): 436-443.

参考文献

[1]Tang H，Hu X，Xu C，et al.A novel approach for determining landslide pushing force based on landslide-pile interactions［J］.Engineering Geology， 2014，182:15-24.
[2]Terzaghi K.Theoretical soil mechanics［M］.New York:John Wiley & Sons，1943:76-85.
[3]Vardoulakis L，Graf B，Gudehus G.Trap-door problem with dry sand:a statical approach based upon model test kinematics［J］.International Journal for Numerical and Analytical Methods in Geomechanics，1981，5:57-78.
[4]Handy R L.The arch in soil arching［J］.Journal of Geotechnical Engineering，1985，3:302-318.
[5]孙书伟，马宁，胡家冰，等.抗滑桩土拱演化特征及机理分析［J］.铁道工程学报，2019，11:7-12.(Sun Shu-wei，Ma Ning，Hu Jia-bing，et al.Evolution characteristics and mechanism analysis of soil arch of anti-slide pile［J］.Journal of Railway Engineering Society，2019，11:7-12.
[6]Janssen H A.Versuche uber getreidedruck in silozellen［J］.Zeitschrift des Vereins Dtsch Ingenieure，1895，39:1045.
[7]郑学鑫.抗滑桩间土拱效应及其有限元模拟研究［D］.南京:河海大学，2007.(Zheng Xue-xin.Analysis and simulation of soil arching effects on anti-slide piles［D］.Nanjing:Hohai University，2007.)
[8]张建勋，陈福全，简洪钰.被动桩中土拱效应问题的数值分析［J］.岩土力学，2004，25(2):174-178.(Zhang Jian-xun，Chen Fu-quan，Jian Hong-yu.Numerical analysis of soil arching effects in passive piles［J］.Rock and Soil Mechanics，2004，25(2):174-178.)
[9]Li C，Wu J，Tang H，et al.A novel optimal plane arrangement of stabilizing piles based on soil arching effect and stability limit for 3D colluvial landslides［J］.Engineering Geology，2015，195:236-247.
[10]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 De-pei，Xiao Shi-guo，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.)
[11]张玲，陈金海，赵明华.考虑土拱效应的悬臂式抗滑桩最大桩间距确定［J］.岩土力学，2019，40(11):4497-4505.(Zhang Ling，Chen Jin-hai，Zhao Ming-hua.Maximum cantilever anti-slide piles spacing determination with consideration of soil arching effect［J］.Rock and Soil Mechanics，2019，40(11):4497-4505.)
[12]李长冬.抗滑桩与滑坡体相互作用机理及其优化研究［D］.武汉:中国地质大学(武汉)，2009.(Li Chang-dong.Study on interaction mechanism between anti-slide pile and landslide mass and pile optimization［D］.Wuhan:China University of Geosciences (Wuhan)，2009.)
[13]贾海丽，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 Hai-li，Wang Cheng-hua，Li Jiang-hong.Discussion on some issues in theory of soil arch［J］.Journal of Southwest Jiaotong University，2003，38(4):398-402.)
[14]Chevalier B，Combe G，Villard P.Experimental and numerical study of the response of granular layer in the trap-door problem［J］.AIP Conference Proceedings，2009，1145:649-652.(上接第427页)
[2]Asai P，Panja P，McLennan J，et al.Efficient workflow for simulation of multifractured enhanced geothermal systems (EGS)［J］.Renewable Energy，2019，131:763-777.
[3]Ghassemi A.A review of some rock mechanics issues in geothermal reservoir development［J］.Geotechnical Geological Engineering，2012，30(3):647-664.
[4]Legarth B，Huenges E，Zimmermann G.Hydraulic fracturing in a sedimentary geothermal reservoir:results and implications［J］.International Journal of Rock Mechanics Mining Sciences，2005，42 (7/8):1028-1041.
[5]Xie L，Min K，Song Y.Observations of hydraulic stimulations in seven enhanced geothermal system projects［J］.Renewable Energy，2014，79:56-65.
[6]葛兆龙，梅绪东，卢义玉，等.煤矿井下新型水力压裂封孔材料优化及封孔参数研究［J］.应用基础与工程科学学报，2016，22 (6):85-96.(Ge Zhao-long，Mei Xu-dong，Lu Yi-yu，et al.Drilling sealed parameters and optimization of a new type sealing material for hydraulic fracturing in underground coalmines ［J］.Journal of Basic Science and Engineering ，2016，22 (6):85-96.)
[7]彭深，林柏泉，翟成，等.钻孔胶囊封孔器耐压影响因素及其在煤矿水力压裂中的应用［J］.煤矿安全，2014，45 (7):114-117.(Peng Shen，Lin Bai-quan，Zhai Cheng，et al.Effect factors of borehole capsule packer pressure bearing and application in coal mine hydraulic fracturing［J］.Safety in Coal Mines，2014，45 (7):114-117.)
[8]Liu Z，Wang S，Zhao H，et al.Effect of random natural fractures on hydraulic fracture propagation geometry in fractured carbonate rocks［J］.Rock Mechanics and Rock Engineering，2018，51(2):491-511.
[9]Wanniarachchi W，Ranjith G，Mandadige P，et al.Investigation of depth and injection pressure effects on breakdown pressure and fracture permeability of shale reservoirs:an experimental study［J］.Applied Sciences，2017，7(7):664.
[10]Lan W J，Wang H X，Zhang X，et al.Sealing properties and structure optimization of packer rubber under high pressure and high temperature［J］.Petroleum Science，2019，16(3):632-644.
[11]Zhou C，Wan Z，Yuan Z，et al.Experimental study on hydraulic fracturing of granite under thermal shock［J］.Geothermics，2018，71:146-155.
[12]Lin C，He J，Li X.Width evolution of the hydraulic fractures in different reservoir rocks［J］.Rock Mechanics and Rock Engineering， 2018，51(5):1621-1627.

土拱应力递减模型及其在滑坡荷载分担模型中的应用

Stress-Reduction Model for Soil Arch and Its Application in Load Sharing Model for Landslide

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价