| 包边填砂路基边坡稳定性计算方法研究 |
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| 引用本文： | 谭炜,贾致荣,杨若冲. 包边填砂路基边坡稳定性计算方法研究[J]. 公路交通科技, 2009, 26(3) |
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| 作者姓名： | 谭炜 贾致荣 杨若冲 |
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| 作者单位： | 1. 同济大学,道路与交通工程教育部重点实验室,上海,200092
2. 山东理工大学,建筑工程学院,山东,淄博,255049 |
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| 摘 要： | 为了研究粘性包边土层与砂填料所共同构成的填砂路基边坡的稳定性，分析了填砂路基的破坏模式与破坏机理，并通过模型试验的结果得到了滑动面位置。根据所得的滑动面位置对填砂路基边坡稳定计算公式进行了推导，确定了稳定性系数的分析计算公式。研究表明：包边土可以使填砂路基边坡浅层滑动面向路基填料内部转移；在地基条件较好的情况下，被动土楔的滑动面为包边土内部过坡脚的一条斜线；主动土楔的滑动面位于填料内部的一条斜线，与被动土楔的滑动面构成折线滑动面；设计中应尽量选用抗剪强度较高的改良粘性土作为包边材料，同时应重视包边土的压实质量。
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| 关 键 词： | 道路工程 填砂路基 稳定性 滑动面 |
Study on Stability of Sand-filled Embankment Slope with Cover Laver |
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| TAN Wei,JIA Zhirong,YANG Ruochong. Study on Stability of Sand-filled Embankment Slope with Cover Laver[J]. Journal of Highway and Transportation Research and Development, 2009, 26(3) |
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| Authors: | TAN Wei JIA Zhirong YANG Ruochong |
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| Affiliation: | 1.Key Laboratory of Road and Traffic Engineering of Education Ministry;Tongji University;Shanghai 200092;China;2.School of Civil Engineering;Shandong University of Science and Technology;Zibo Shandong 255049;China |
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| Abstract: | To study the stability of natural sand embankment slope covered with cohesive soil layer,the mode and the mechanism of sand embankment slope failure were analyzed.The position of sliding surface was found out through the laboratory model test,and a new formula to determine the stability factor of sand-filled embankment slope was developed accordingly.It is found that(1) the cohesive soil cover layer can make the shallow sliding surface move toward inside of embankment;(2) when the foundation is in good cond... |
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| Keywords: | road engineering sand embankment stability sliding surface |
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