| 公路地基路基协同沉降变形机理研究 |
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| 引用本文： | 赵立廷,宫玉明,刘军勇,裘友强.公路地基路基协同沉降变形机理研究[J].路基工程,2019,0(6):1. |
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| 作者姓名： | 赵立廷 宫玉明 刘军勇 裘友强 |
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| 作者单位： | 中交第一公路勘察设计研究院有限公司, 西安 710075 |
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| 基金项目： | 国家重点研发计划（2016YFC0802203）；中国交建科技研发项目（2014-ZJKJ-PTJS07） |
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| 摘 要： | 为了研究盐渍土地区公路地基路基协同沉降变形机理，依托察格高速公路察尔汗盐湖湖心区域盐渍土地基处治试验段，将风积沙和砾石作为路基隔断层，建立数值分析模型，考虑路基与路面分层填筑过程中地基的固结沉降，分析了不同影响因素下地基-路基协同沉降变形规律以及地基路基差异沉降规律，提出了不同路基高度和宽度条件下地基与路基沉降比的取值范围。结果表明:路基沉降与地基沉降线性相关，路基横断面上各点沉降比可视为一定值。
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| 关 键 词： | 盐渍土地区 公路地基 路基 协同变形 数值分析 沉降比 |
| 收稿时间： | 2019-02-19 |
Study on Mechanism of Compatible Settlement Deformation of Highway Foundation and Subgrade |
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| Abstract: | In order to study the mechanism of compatible settlement deformation of highway foundation and subgrade in saline soil area, then in relation to the test section for saline soil foundation treatment in the middle area of Qarhan Salt Lake along Qarham—Golmud Highway as the research object, and the aeolian sand and gravel as the subgrade insulating layer to establish the numerical analysis model. Considering the consolidation settlement of the foundation in the filling of the subgrade and pavement in layers, both the laws of the foundation-subgrade compatible settlement deformation and the laws of the differential settlement thereof under different influencing factors were analyzed, and on the conditions of different height and width of the subgrade, the value range of the foundation-subgrade settlement ratio was proposed. The result shows that the subgrade settlement relates to the foundation settlement linearly, the settlement ratio at each point in the cross section of subgrade may be deemed as a definite value. The study result aims to provide technical support to the revision of the existing codes for subgrade and pavement. |
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