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本文基于对往返荷载下饱和砂土瞬态孔压变化机理和定量分析途径的已有研究成果,通过振动三轴试验,建立了计算往返荷载下饱和砂土瞬态孔隙水压力的具体数学模型。该模型考虑了导致瞬态孔压波动发展的主要因素,据初步的模型计算和试验测定结果的对比,表明该模型能够模拟瞬态孔隙水压力的实际变化过程.
In this paper, based on the existing research results of the transient pore pressure change mechanism and quantitative analysis of saturated sand under cyclic loading, a mathematical model for calculating the transient pore water pressure of saturated sand under reciprocating load was established through vibration triaxial tests. This model takes into account the main factors that lead to the development of transient pore water pressure fluctuations. According to the preliminary model calculations and comparison of experimental measurements, it shows that the model can simulate the actual change process of transient pore water pressure.