| 路基粗粒土抗剪强度影响因素分析 |
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| 引用本文： | 王冠,陈坚. 路基粗粒土抗剪强度影响因素分析[J]. 路基工程, 2015, 0(3): 154-157. DOI: 10.13379/j.issn.1003-8825.2015.03.34 |
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| 作者姓名： | 王冠 陈坚 |
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| 作者单位： | 1.贵州省交通规划勘察设计研究院股份有限公司, 贵阳 550000 |
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| 摘 要： | 粗粒土由于其优良的工程性质,在中国高速公路与铁路路基填筑中得到了广泛的应用。通过调研国内外大量的研究成果,分析了影响粗粒土抗剪强度的主要因素,探讨了这些因素对抗剪强度的影响机理。分析结果表明:粗细颗粒比例、颗粒本身的性质、应力状态、含水率、剪切速率以及粒径大小等是影响粗粒土抗剪强度的主要因素;粗粒土的抗剪强度主要决定于颗粒间形成的土体结构强度以及颗粒本身的特性,即所有影响土体结构强度以及颗粒本身特性的因素,均可对其抗剪强度产生影响。
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| 关 键 词： | 路基 粗粒土 抗剪强度 土体结构 缩尺效应 |
| 收稿时间： | 2019-11-10 |
Analysis on Factors Affecting Shear Strength of Coarse-grained Soil of Subgrade |
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| WANG Guan,CHEN Jian. Analysis on Factors Affecting Shear Strength of Coarse-grained Soil of Subgrade[J]. , 2015, 0(3): 154-157. DOI: 10.13379/j.issn.1003-8825.2015.03.34 |
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| Authors: | WANG Guan CHEN Jian |
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| Abstract: | Coarse-grained soil, due to its excellent engineering properties, is applied extensively in subgrade filling for highways and railways across China. Through investigation on the related achievements at home and abroad, this paper analyzed the main factors affecting such soil’s shear strength, and discussed the mechanism thereof. The results show that the ratio of coarse and fine grains, the own property of grains, stress state, water content, shearing rate and grain size are the main factors affecting coarse-grained soil’s shear strength which depends on the structural strength of soil mass between and the own property of the grains mainly, that is to say, all factors, which affect the structural strength of soil mass and the own property of the grains, will impact its shear strength. |
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| Keywords: | subgrade coarse-grained soil shear strength soil mass structure scale effect |
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