[1]蒋楚生,闫清卫,陈廷君,等.考虑筋材有效拉力的加筋土路堤稳定性分析方法[J].高速铁路技术,2023,14(06):46-50.[doi:10.12098/j.issn.1674-8247.2023.06.009]
　JIANG Chusheng,YAN Qingwei,CHEN Tingjun,et al.Stability Analysis Method of Reinforced Earth Embankment Slope Considering Effective Tensile Force of Reinforcements[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(06):46-50.[doi:10.12098/j.issn.1674-8247.2023.06.009]
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考虑筋材有效拉力的加筋土路堤稳定性分析方法()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年06期
页码:
46-50
栏目:
研究创新
出版日期:
2023-12-30

文章信息/Info

Title:
Stability Analysis Method of Reinforced Earth Embankment Slope Considering Effective Tensile Force of Reinforcements
文章编号:
1674-8247（2023）06-0046-05
作者:
蒋楚生1; 闫清卫2; 陈廷君3; 肖世国3
1.中铁二院工程集团有限责任公司，成都 610031;2.西南交通大学，成都 610031;3.西南交通大学高速铁路线路工程教育部重点实验室，成都 610031
Author(s):
JIANG Chusheng1; YAN Qingwei2; CHEN Tingjun2; 3; XIAO Shiguo2; 3
1.China Railway Eryuan Engineering Group Co. ，Ltd. ，Chengdu 610031 ，China;2.Southwest Jiaotong University ，Chengdu 610031 ，China;3.MOE Key Laboratory of High-speed Railway Engineering ，Southwest Jiaotong University ，Chengdu 610031 ，China
关键词:
加筋土路堤; 边坡稳定性; 瑞典圆弧法; 拉筋破坏模式; 筋材有效拉力
Keywords:
reinforced earth embankment; slope stability; Swendish circle method; reinforcement failure mode; effective tensile force of reinforcements
分类号:
U213.1
DOI:
10.12098/j.issn.1674-8247.2023.06.009
文献标志码:
A
摘要:
加筋土技术在铁路路基工程中的应用愈加广泛，而工程设计中拉筋最大有效拉力的取值尚存在不合理之处。本文针对拉筋有效拉力对路堤边坡稳定性的影响，建立了考虑不同位置拉筋最大拉力的加筋土路堤边坡稳定性分析方法。研究结果表明：（1）将由侧摩阻力与抗拉断力控制的拉筋所能提供的极限抗拉作用力与拉筋的破坏模式相关联，分别计算拉筋拉断和拔出破坏模式下的极限拉力，以确定不同位置拉筋可提供的最大有效拉力；（2）基于瑞典圆弧条分法，将拉筋作用作为附加抗滑力矩引入边坡稳定系数计算公式，给出了加筋土路堤稳定性分析方法，可编制MicorsoftExcel计算表格，在实际工程中方便使用；（3）典型工程实例分析表明，本文方法与数值模拟得到的路堤边坡稳定系数误差在5％以内，提出的方法具有合理性与实际可操作性。
Abstract:
The reinforced soil technology is widely used in railway subgrade engineering，but it is still not reasonable for the determination of effective tensile force of reinforcements involoved in the reinforced slope stability in practical design. In order to deal with the influlences of the tension of reinforcements on the slope stability，an analysis method for the reinforced slope stability considering possible maximum tension of the reinforcements at various locations is proposed. The research results show that（1）The relationship between failure modes and maximum tension effect of the reinforcements controlled by side friction on their surfaces and ultimate pulling force of the materials are established to determine the possible maximum tension provided by the reinforcements. （2）Based on the Swedish slice method，the reinforcement action is introduced into the calculation formula of slope stability coefficient as an additional anti-sliding moment. So the stability analysis method of reinforced soil embankment is given and it can be carried easily out via Microsoft spreading sheets in the designs of practical engineering. （3）Analysis results of some typical engineering examples show the relative error between the proposed method and the stability coefficient of embankment slope obtained by numerical simulation is less than 5％，and the proposed method is reasonable and practical.

参考文献/References:

［1］ KOERNER R M，SOONG T Y. Geosynthetic Reinforced Segmental Retaining Walls［J］. Geotextiles and Geomembranes，2001，19（6）：359-386.
［2］ SCHLOSSER F，LONG N T. Recent Results of French Research on Reinforced Earth［J］. Journal of the Construction Division，1974， 100（3）：223-237.
［3］ 何光春，周世良. 加筋土技术的应用及进展［J］. 重庆建筑大学学报，2001，23（5）：11-15. HE Guangchun，ZHOU Shiliang. Application and Advancement of Reinforced Earth Technique［J］. Journal of Chongqing Jianzhu University，2001，23（5）：11-15.
［4］ CHEN Zuyu，MORGENSTERN N R. Extensions to the Generalized Method of Slices for Stability Analysis［J］. Canadian Geotechnical Journal，1983，20（1）：104-119.
［5］ DUNCAN J M. State of the Art：Limit Equilibrium and Finite-element Analysis of Slopes［J］. Journal of Geotechnical Engineering，1996， 122（7）：577-596.
［6］ KERRY ROWE R，SKINNER G D. Numerical Analysis of Geosynthetic Reinforced Retaining Wall Constructed on a Layered Soil Foundation［J］. Geotextiles and Geomembranes，2001，19（7）：387-412.
［7］ WU J T H，LEE K Z Z，PHAM T. Allowable Bearing Pressures of Bridge Sills on GRS Abutments with Flexible Facing［J］. Journal of Geotechnical and Geoenvironmental Engineering，2006，132（7）：830-841.
［8］ 章为民，赖忠中，徐光明. 加筋挡土墙离心模型试验研究［J］. 土木工程学报，2000，33（3）：84-91. ZHANG Weimin，LAI Zhongzhong，XU Guangming. Centrifuge Modelling of Geotextile-reinforced Cohesiveless Soil Retaining Walls ［J］. China Civil Engineering Journal，2000，33（3）：84-91.
［9］ 高文华，Richard J. Bathurst. 条形荷载作用下加筋土边坡稳定性分析［J］. 岩石力学与工程学报，2007，26（2）：374-380. GAO Wenhua，BATHURST R J. Stability Analysis of Reinforced Slope Loaded by a Strip Footing［J］. Chinese Journal of Rock Mechanics and Engineering，2007，26（2）：374-380.
［10］?周世良，何光春，汪承志，等. 台阶式加筋土挡墙模型试验研究［J］. 岩土工程学报，2007，29（1）：152-156. ZHOU Shiliang，HE Guangchun，WANG Chengzhi，et al. Study on Stepped Reinforced Soil Retaining Walls by Model Tests［J］. Chinese Journal of Geotechnical Engineering，2007，29（1）：152-156.
［11］?介玉新，周诗博，郭政豪，等. 平台分级对加筋土边坡稳定性的影响研究［J］. 工程地质学报，2018，26（5）：1178-1187. JIE Yuxin，ZHOU Shibo，GUO Zhenghao，et al. Centrifuge Model Tests and Strength Reduction Method for Influence of Bench Arrangement on Stability of Reinforced Slopes［J］. Journal of Engineering Geology，2018，26（5）：1178-1187.

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备注/Memo

备注/Memo:
收稿日期：2023-01-06
作者简介：蒋楚生（1964-），男，教授级高级工程师。
更新日期/Last Update: 2023-12-30