| 季冻区砂性土堤防水分场温度场及水分迁移试验研究 |
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| 引用本文： | 黄荣富,张宝磊,史翰超.季冻区砂性土堤防水分场温度场及水分迁移试验研究[J].西北地震学报,2021,43(5):1129-1133. |
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| 作者姓名： | 黄荣富 张宝磊 史翰超 |
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| 作者单位： | 黑龙江省生态地质调查研究总院, 黑龙江 哈尔滨 150030;黑龙江省水利水电集团有限公司, 黑龙江 哈尔滨 150001;机械工业第九设计研究院有限公司, 吉林 长春 130011 |
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| 基金项目： | 黑龙江省科技厅项目（GZ16B021） |
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| 摘 要： | 以黑龙江干流堤防工程实际环境为研究基础，依托水分迁移试验装置，测试了干流堤防典型砂性土试样在冻融循环下的温度场、水分场、应力场的分布情况。结果表明：堤顶混凝土公路破坏与堤身不均匀沉降有关，温度变化引起堤基含水率出现梯度变化，从而出现应力场变化，且温度梯度含水率梯度呈线性关系。地基稳定冻结深度达到1.12 m。结合实测数据建立季节性冻土区堤防基础的水、热、力三场耦合模型，最后利用ANSYS有限元分析软件进行模拟分析，证明该模型在堤防工程上的实用性。
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| 关 键 词： | 季节性冻土 水分场 温度场 应力场 有限元分析 耦合 |
| 收稿时间： | 2020/4/24 0:00:00 |
Water migration test on the moisture field and temperature fieldof sandy soil embankments in seasonal frozen area |
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| HUANG Rongfu,ZHANG Baolei,SHI Hanchao.Water migration test on the moisture field and temperature fieldof sandy soil embankments in seasonal frozen area[J].Northwestern Seismological Journal,2021,43(5):1129-1133. |
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| Authors: | HUANG Rongfu ZHANG Baolei SHI Hanchao |
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| Institution: | Heilongjiang General Institute of Ecological Survey and Research, Harbin 150030, Heilongjiang, China;Heilongjiang Province Water Resources and Hydropower Group Co., Ltd., Harbin 150001, Heilongjiang, China; MI Ninth Design and Research Institute Co., Ltd., Changchun 130011, Jilin, China |
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| Abstract: | Based on the actual environment of embankment projects along the Heilongjiang mainstream, the distribution of temperature field, water field, and stress field of typical sandy soil samples from the embankment under freeze-thaw cycle were tested by the water migration experimental device. The test results showed that the damage of concrete highway at the top of embankment is related to the uneven settlement of embankment. The temperature change causes the gradient change of moisture content in embankment foundation, resulting in the change of stress field, and there is a linear relationship between the temperature gradient and moisture content gradient. The stable freezing depth of foundation reaches 1.12 m. Combined with the measured data, a thermo-hydro-mechanical coupled model for embankment foundation in seasonal frozen soil area was established. Finally, the practicability of the model in embankment projects was proved by a simulation analysis with the ANSYS finite element software. |
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| Keywords: | seasonal frozen soil moisture field temperature field stress field finite element analysis coupling |
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