季冻区公路路基粗粒土的冻胀敏感性及分类研究 English Version
Research on frost heave susceptibility and classification of coarse grained soil of highway subgrade in seasonally frozen ground region
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摘要: 对5种粗粒土13种不同含泥量土料在不同含水率、饱和度和密实度状态下进行了一系列封闭系统下的冻胀模拟试验。研究了各种粗粒土的η-w关系,并对其进行线性分析,揭示了粗粒土的冻胀规律。根据所建立的各种不同粗粒土的η-w经验关系式得出各种土料以及粗粒土的相应于不同冻胀等级和类别的界限含水率值,并与现有的规范进行对比,指出规范值得商榷的问题。Abstract: According to the test results of closed simulated frost heave susceptibility experiments with five Rinds of different coarse grained soils and thirteen Rinds of fine grained content soils,the influence of different water contents,degree of saturations and degree of compaction on frost heaving susceptibility was discussed,and the η-w curves and the frost heave law were analyzed.Moreover,linearity for coarse grained soil regression equations of η-w relation and the boundary water content corresponding to different frost heave grades was summerized.
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Keywords:
- coarse grained soil /
- frost heave ratio /
- fine grained soil content /
- water content
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