公路路基下伏岩盐夹层地基沉降与承载性能研究 |
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引用本文: | 胡关华,李彦兵,王云峰,田亮,刘军勇,裘友强. 公路路基下伏岩盐夹层地基沉降与承载性能研究[J]. 路基工程, 2020, 0(1): 10-14. DOI: 10.13379/j.issn.1003-8825.2020.01.03 |
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作者姓名: | 胡关华 李彦兵 王云峰 田亮 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;呼和浩特市公路工程局,呼和浩特010070 |
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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: | 为了探明岩盐夹层的工程特性及其作为公路地基的适应性,依托察格高速公路察尔汗盐湖南段岩盐夹层地基处治工程,通过建立岩盐夹层地基受力与变形数值模型,分析不同岩盐夹层厚度及岩盐夹层埋深地质条件下的不同路基高度岩盐夹层地基沉降特征,同时采用现场载荷试验,进一步模拟分析降雨浸水对岩盐夹层地基承载力和沉降的影响,并验证了天然岩盐夹层地基可以作为公路地基持力层。
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关 键 词: | 岩盐夹层 公路地基 数值模型 地基沉降 现场载荷试验 降雨浸水 地基承载力 |
收稿时间: | 2019-02-19 |
Study on Foundation Settlement and Bearing Capacity of Rock Salt Interlayer under Highway Subgrade |
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Abstract: | In order to find out the engineering characteristics of rock salt interlayer and its adaptability as a highway foundation, relying on the foundation treatment project of rock salt interlayer in the southern section of Chaerhan Salt Lake of Qarham-Golmud Highway, the numerical model of stress and deformation of rock salt interlayer foundation is established to analyze the foundation settlement characteristics of rock salt interlayer in different subgrade heights under different rock salt interlayer thickness and rock salt interlayer buried geological conditions. The field loading test is used to further simulate and analyze the influence of rainfall immersion on the foundation bearing capacity and settlement of rock salt interlayer. It is verified that the foundation of natural rock salt interlayer can be used as the highway foundation bearing layer. |
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