| 兰新铁路路基土冻胀特性试验研究 |
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| 引用本文： | 郭彦荣,杨有海,曾龙广.兰新铁路路基土冻胀特性试验研究[J].路基工程,2010,0(2):149-151. |
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| 作者姓名： | 郭彦荣 杨有海 曾龙广 |
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| 作者单位： | 兰州交通大学土木工程学院, 兰州 730070 |
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| 摘 要： | 通过不同含水率、压实度和外部荷载的封闭系统冻胀试验,研究了兰新铁路路基土冻胀特性。试验结果表明,在封闭系统下土体是否冻胀与初始含水率有关;冻胀率随含水率的增大而增大,随压实度的增大而减小,外部荷载对冻胀有抑制作用;基于试验分析提出了适用于兰新铁路的冻害防治措施是排水和隔水。
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| 关 键 词： | 封闭系统 冻胀率 含水率 压实度 外部荷载 |
| 收稿时间： | 2019-11-10 |
Study on Frost Heaving Characteristics of Subgrade Soil of Lanzhou-Xinjiang Railway |
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| Authors: | GUO Yan-rong YANG You-hai ZENG Long-guang |
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| Institution: | School of Civil Engineering/a>;Lanzhou Jiaotong University/a>;Lanzhou 730070/a>;China |
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| Abstract: | Through frost heaving test under different water content,compactness and external loads in closed system,this paper studies frost heaving characteristics of subgrade soil of Lanzhou-Xinjiang Railway.It is indicated from test result that in closed system,soil mass heave is related to initial water content;frozen-heave factor increases with the increase of water content and increases with the reduction of compactness;external load restrains frost heaving.The paper puts forward that drainage and water resistan... |
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| Keywords: | closed system frozen-heave factor water content compactness external load |
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