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红粘土作为一种具有特殊工程性质的区域性土,在我国西南地区广泛分布。红粘土由于地形地貌、水文条件、成因和结构性等的不同,实际的工程特性和地基承载力差异很大,对红粘土工程特性及地基承载力特征的研究十分必要。本文基于贵州和云南省境内红粘土地区70余份载荷试验资料及143份土工试验结果表,归纳总结了红粘土的物理力学性质,通过不同的地形地貌、水文条件、成因、结构性、胀缩性时红粘土承载特性的分析,明确了不同影响因素对红粘土地基承载力的影响程度;并通过红粘土与其他细粒土载荷试验P-S曲线的对比,分析了红粘土与其他细粒土承载特性的差异。
As a kind of regional soil with special engineering properties, red clay is widely distributed in southwest China. Due to the difference of topography, hydrology condition, genesis and structure, the actual engineering properties and the bearing capacity of red clay vary widely. It is necessary to study the engineering characteristics of red clay and the bearing capacity of foundation. Based on more than 70 load test data and 143 geotechnical test results in red clay area in Guizhou and Yunnan Provinces, the physical and mechanical properties of red clay are summarized and analyzed through different topography, hydrological conditions, genesis, structure, expansion and contraction The analysis of the load-carrying characteristics of sexual red clay shows that the influence of different influencing factors on the bearing capacity of red clay foundation is clear. By comparing the PS curves of red clay and other fine-grained soil tests, the effects of red clay and other fine grained soil bearing Differences in characteristics.