| 自密实水泥土拼宽路堤沉降与稳定性研究 |
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| 引用本文： | 叶至韬,高玉峰,王昕远,周云东.自密实水泥土拼宽路堤沉降与稳定性研究[J].河北工程大学学报,2020,37(4):52-56,93. |
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| 作者姓名： | 叶至韬 高玉峰 王昕远 周云东 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098;河海大学岩土工程科学研究所,江苏南京 210098,河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098;河海大学岩土工程科学研究所,江苏南京 210098,江苏纬信工程咨询有限公司,江苏南京 210014,河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098;河海大学岩土工程科学研究所,江苏南京 210098 |
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| 基金项目： | 国家自然科学基金面上项目（50879023） |
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| 摘 要： | 以某路堤拼宽工程为例，探讨自密实水泥土作为新路堤填料的可行性，基于以开挖弃土为原料土的室内试验实测数据，采用Plaxis2D软件进行新老路堤沉降、差异沉降的数值模拟，并分析路堤边坡稳定性。分析考虑了新路堤坡率、是否铺设土工格栅对其的影响。结果表明：自密实水泥土填料能够有效控制路堤沉降和不均匀沉降，铺设土工格栅能够减小新老路堤的不均匀沉降并显著提高路堤稳定性，自密实水泥土在路堤拼宽工程中有良好的适用性。
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| 关 键 词： | 自密实水泥土 路堤拼宽 坡率 土工格栅 Plaxis2D |
| 收稿时间： | 2020/7/22 0:00:00 |
Settlement and Stability Analysis of Embankment Widening Using Self-compacting Cement Soil |
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| Authors: | YE Zhitao GAO Yufeng WANG Xinyuan ZHOU Yundong |
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| Affiliation: | Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China;Geotechnical Research Institute, Hohai University, Nanjing, Jiangsu 210098, China,Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China;Geotechnical Research Institute, Hohai University, Nanjing, Jiangsu 210098, China,Jiangsu Weixin Engineering Consultants Ltd, Nanjing, Jiangsu 210014, China and Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China;Geotechnical Research Institute, Hohai University, Nanjing, Jiangsu 210098, China |
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| Abstract: | Taking an embankment widening project as an example, the feasibility of self-compacting cement soil as the filling material of a new embankment was discussed in this paper. Based on the lab test data of excavated soil, numerical investigations on the settlement and differential settlement of the new and old embankments were carried out using the software Plaxis2D, and the stability of embankment slope was also analyzed. The influence of the new embankment slope ratio and geogrid laying was considered in the analysis. The results indicate that as the filling material of a new embankment, the self-compacting cement soil can effectively control the settlement and differential settlement, and laying geogrid can reduce differential settlement of the new and old embankments and significantly improve the stability of the embankment, the self-compacting cement soil is applicable in the embankment widening project. |
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| Keywords: | self-compacting cement soil embankment widening slope ratio Geogrid Plaxis2D |
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