| 砂砾改良盐渍土用作路基填料的研究 |
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| 引用本文： | 李海潮,尹睿捷,张梅玲.砂砾改良盐渍土用作路基填料的研究[J].路基工程,2014,0(1):53-57. |
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| 作者姓名： | 李海潮 尹睿捷 张梅玲 |
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| 作者单位： | 1.1上海远通路桥工程有限公司，上海 200135 |
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| 基金项目： | 青海省交通建设科技项目：西宁南绕城高速公路盐渍土填料路用性能研究 |
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| 摘 要： | 以西宁南绕城高速公路工程为依托，对现场所取的盐渍土采用掺拌砂砾，对路基填料进行试验研究。其结果表明:添加砂砾对改善盐渍土的颗粒级配有非常明显的作用，同时大大增加了土体的密实度，增强了土颗粒间的摩擦力，提高了土体的抗剪强度并降低了其回弹变形的幅度；满足了高速公路工程的要求。
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| 关 键 词： | 高速公路 盐渍土 路基填料 砂砾改良 级配 路用性能 |
| 收稿时间： | 2019-11-11 |
Study on Use of Gravel Improved Saline Soil as Subgrade Fill |
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| Authors: | LI Haichao YIN Ruijie ZHANG Meiling |
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| Affiliation: | 1. Shanghai Interlink Road ＆ Bridge Engineering Co. , Ltd. , Shanghai 200135, China; 2. School of Highway, Chang＇an University, Xi＇an 710064, China; 3. CCCC First Highway Consultants Co. , Ltd. , Xi＇an 710068, China) |
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| Abstract: | Depending on the project of South Ring Expressway in Xining, the saline soil used in the field, which is mixed with gravel and used as the subgrade fill was studied by experiment. The result shows that mixing of gravel plays an import role in improvement of the grain gradation of the saline soil and increases the dense degree of the soil mass to a great extent so as to increase the friction between the soil grains and the shearing strength of the soil mass, and decrease the amplitude of the rebound deformation, thus meets the requirement of expressway engineering. |
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| Keywords: | expressway saline soil subgrade fill gravel improved gradation pavement performance |
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