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在一系列室内固结试验的基础上 ,探讨了南沙软土的固结变形特性。试验结果表明 ,南沙软土的次固结效应显著 ,主、次固结的划分与固结压力有关。随着固结压力的变化 ,次固结系数表现出与当前应力状态有关的变化规律。当处于正常固结状态时 ,次固结系数近似为一常数。同时 ,固结系数和固结压力、次固结系数和压缩指数之间均有较好的相关性。
Based on a series of indoor consolidation tests, the consolidation deformation characteristics of Nansha soft soil are discussed. The test results show that the secondary consolidation effect of Nansha soft soil is significant, and the division of primary and secondary consolidation is related to consolidation pressure. As the consolidation pressure changes, the secondary consolidation coefficient shows the variation with the current state of stress. When in the normal consolidation state, the secondary consolidation coefficient is approximately a constant. At the same time, there is a good correlation between consolidation coefficient and consolidation pressure, secondary consolidation coefficient and compression index.