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根据黄土的大孔隙、高强度及欠压密等特性,对不同含水量的原状土与重塑土进行了一系列侧限压缩试验,包括压缩试验、压缩再回弹试验和压缩回弹再压缩试验,并对天然含水量下原状土进行4种不同荷载下的回弹再压缩试验.在试验的基础上详细分析了结构性对黄土的压缩和回弹性能的影响,尤其是对原状土在结构屈服前后的力学性能变化的影响,得出黄土的结构性对其压缩回弹性能的影响显著,特别是在结构屈服压力前后,原状土的回弹能力差别较大.研究成果为提出一种结构性黄土先期固结压力的推求方法奠定了基础.
According to the characteristics of loess macropore, high strength and under-compactness, a series of confined compression tests were carried out on undisturbed and remolded soils with different water contents, including compression test, compression and rebound test and compression and rebound recompression Test and the springback and re-compression tests under four different loads of undisturbed soil with natural water content.On the basis of the experiment, the effect of structure on the compression and rebound performance of loess is analyzed in detail, The results show that the structural properties of loess have a significant influence on its compressive resilience properties, especially before and after the structural yield stress. The research results are as follows: The preconsolidation pressure of structured loess laid the foundation.