| 路基结构性能衰变影响因素与机理分析 |
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| 引用本文： | 李冬雪,孙宗元. 路基结构性能衰变影响因素与机理分析[J]. 路基工程, 2014, 0(6): 42-45. DOI: 10.13379/j.issn.1003-8825.2014.06.09 |
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| 作者姓名： | 李冬雪 孙宗元 |
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| 作者单位： | 1.吉林省交通科学研究所季冻区公路建设与养护技术交通行业重点实验室, 长春 130012 |
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| 摘 要： | 准确掌握路基结构性能与湿度的相关性,并且能够进行科学的表征,是完善“力学-经验”设计法的基础。鉴于此,综述了路基结构性能的主要影响因素,并探讨了路基结构性能的衰变机理。结果表明:应力状态与路基湿度对路基结构性能影响最为显著,而路基性能衰变可从非饱和土基质吸力、抗剪强度及细颗粒土流失等方面进行解释。
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| 关 键 词： | 路基 路基湿度 回弹模量 永久变形 非饱和土土力学 |
| 收稿时间： | 2019-11-06 |
Analysis on Factors Affecting Performance Decay of Subgrade Structure and the Mechanism |
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| LI Dongxue,SUN Zongyuan. Analysis on Factors Affecting Performance Decay of Subgrade Structure and the Mechanism[J]. , 2014, 0(6): 42-45. DOI: 10.13379/j.issn.1003-8825.2014.06.09 |
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| Authors: | LI Dongxue SUN Zongyuan |
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| Affiliation: | LI Dongxue, SUN Zongyuan( 1. Key Laboratory of Transportation Industry for Highway Construction and Maintenance Technology in the Seasonal Frost Region, Jilin Research Institute of Transportation, Changchun 130012, China; 2. Key Laboratory for Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China) |
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| Abstract: | Understanding the correlation between subgrade structure＇s performance and humidity correctly and representing it scientifically is the base to perfect＇mechanics-empirical＇design method; thus this paper summarized the main factors affecting the subgrade structure＇s performance and discussed the decay mechanism thereof. The results show that the stress status and subgrade humidity have most significant influence on the performance; and the performance decay may be explained from the aspects of unsaturated soil＇s matric suction, shear strength and fine-grained soil＇s erosion. |
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| Keywords: | subgrade subgrade humidity resilient modulus permanent deformation soil mechanics for unsaturated soil |
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