| 季节性冻土地区路基冻结深度试验研究 |
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| 引用本文： | 张聪颖.季节性冻土地区路基冻结深度试验研究[J].铁道标准设计通讯,2014(11):32-35. |
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| 作者姓名： | 张聪颖 |
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| 作者单位： | 铁道第三勘察设计院集团有限公司,天津,300251 |
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| 摘 要： | 在季节性冻土地区修建无砟轨道铁路,路基冻胀变形控制是突出技术难题。通过对填筑粗颗粒填料的路基、天然地基与保温路基的温度及变形测试,确定不同土质冻结指数与冻结深度的关系,证明设置保温层可以降低冻结深度,是路基冻胀变形控制的一种有效措施。
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| 关 键 词： | 路基 季节性冻土区 保温板 冻胀观测 |
Study on Frozen Depth Test of Subgrade in Seasonal Frozen Soil Area |
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| Zhang Congying.Study on Frozen Depth Test of Subgrade in Seasonal Frozen Soil Area[J].Railway Standard Design,2014(11):32-35. |
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| Authors: | Zhang Congying |
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| Institution: | ,The Third Railway Survey and Design Institute Group Corporation |
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| Abstract: | Where ballastless track is constructed in the area with seasonal frozen soil,the embankment deformation control is a prominent problem. The test of subgrade filled with coarse grain soil and the test of temperature and deformation of the natural foundation and insulated embankment are conducted to determine the relationship between different soil frozen index and frozen depth. Test results show thatinsulating layer can reduce the frozen depth prove to be an effective way to control subgrade deformation caused by frost heave. |
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| Keywords: | Subgrade Seasonal frozen area Insulation board Frost heaving observation |
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