不同本构模型预测饱和土孔压生成的研究 English Version
Study on the Usage of Various Constitutive Models in Predicting Pore Water Pressure
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摘要: 本文用本构模型研究了孔压系数。导出清华弹塑性模型、修正的拉德模型和修正剑桥模型的孔压系数表达式;用上面三种模型及邓肯EB模型和线弹性完全塑性KG1模型对具有剪缩性的白河堡击实粘性土和具有明显剪胀性的承德中密砂固结不排水试验作了预测比较。得到一些有意义的结论。Abstract: In this paper pore pressure coefficients were studied using various constitutive models.The expressions of these coefficients for Tsinghua elasto-plastic model, modified Lade’s model and modified Cambridge model were derived. The undrained behaviors of a compacted clay with positive dilatancy and a medium sand with negative dilatancy wera predicted using above-mentioned three models, Duncan EB and linear elastic model with parameters determined from the CD test data. Some valuable conclusions have been obtained.
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