| 软土地基上路基加宽工程沉降变形的数值分析 |
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| 引用本文： | 钟勇强,李浩,徐伟.软土地基上路基加宽工程沉降变形的数值分析[J].路基工程,2011,0(6):162-165. |
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| 作者姓名： | 钟勇强 李浩 徐伟 |
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| 作者单位： | 1.淮阴工学院交通学院, 江苏淮安 223003 |
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| 摘 要： | 针对软土地基上高速公路加宽工程中新老路基的差异沉降问题进行了有限元计算，分析新路基作为附加荷载对老路基和地基的影响。计算结果表明，加宽部分路基的填筑将会使得老路路肩与路基中心间差异沉降的产生，极易导致路基纵向裂缝病害。通过参数变化后的计算与分析，建议采用合适的加宽宽度、路基填料和软基处理等措施，控制和降低加宽部分对原有路基沉降变形的影响。
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| 关 键 词： | 软土地基 路基加宽 新老路基 沉降变形 数值分析 |
| 收稿时间： | 2019-11-09 |
Numerical Analysis of Settlement Deformation of Subgrade Widening Engineering in Soft Foundation |
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| Authors: | ZHONGYong-qiang LI Hao XU Wei |
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| Institution: | 3 ( 1. School of Transportation, Huaiyin Institute of Technology, Huaian 223003, Jiangsu, China; 2. China Railway Electrification Bureau (Group) the 5th Engineering Corporation, Changsha 410114, China; 3. Huaian Branch of Jiangsu Traffic Engineering Co. , Ltd. , Huaian 223001, Jiangsu, China) |
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| Abstract: | Against the problem of differential settlement of new and old subgrade in engineering in soft foundation, finite element calculation is carried out to analyze the impact highway widening of new subgrade as an additional load on old subgrade and foundation. The result showed that filling of the widened subgrade will cause differential settlement between the old road shoulder and the center of subgrade, which would easily cause vertical cracks on subgrade. Through calculation and analysis after parameters change, it is recommended to take the measures of widening, subgrade filling and soft foundation treatment to control and reduce the impact of widened section on the settlement of original subgrade. |
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| Keywords: | soft foundation subgrade widening new and old subgrade settlement deformation numerical analysis |
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