Pore water pressure prediction for undrained heating of soils
Pore water pressure prediction for undrained heating of soils
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DOI：
10.1680/jenge.15.00041
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发表时间：
2017-04
影响因子：
2.2
通讯作者：
I. Ghaaowd;A. Takai;T. Katsumi;J. McCartney
中科院分区：
文献类型：
--
作者：
I. Ghaaowd;A. Takai;T. Katsumi;J. McCartney
研究了饱和土不排水加热过程中热致超孔隙水压力的预测模型。热弹性分析是校准使用实验数据提出的文献通常固结土具有不同的矿物学成分。这些土的热致超孔隙水压力大小取决于初始孔隙比、初始有效应力、土颗粒的立方膨胀热系数、温度变化、土骨架的可压缩性和结构体积变化的理化系数。提出了结构体积变化的理化系数与塑性指数之间的经验关系，用于预测饱和正常固结土的热致超孔隙水压力。为了验证该模型，在一个样品上独立进行了不排水加热试验。
This paper focuses on the validation of a prediction model for the thermally induced excess pore water pressure generated in saturated soils during undrained heating. A thermoelastic analysis was calibrated using experimental data presented in the literature for normally consolidated soils having different mineralogical compositions. The magnitude of thermally induced excess pore water pressure for these soils was observed to depend on the initial void ratio, the initial effective stress, the thermal coefficient of cubical expansion of the soil particles, the change in temperature, the compressibility of the soil skeleton and the physicochemical coefficient of structural volume change. An empirical relationship between the physicochemical coefficient of structural volume change and the plasticity index was proposed to predict the thermally induced excess pore water pressure for saturated, normally consolidated soils. To validate the model, an undrained heating test was performed independently on a specime...