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对福州可门港原状淤泥进行单向压缩和三轴固结不排水试验。试验得到了福州地区滨海淤泥在荷载作用下由弹性状态向塑性状态变化过程中其固结应力、孔隙水压力与轴向应变的关系以及应力路径曲线的特征。对试验结果进行分析可知,福州淤泥的固结屈服应力随着土层深度的增加而增加,但压缩模量与深度关系不大。通过三轴试验和三轴固结-回弹-再压缩试验得到福州软土修正剑桥模型的指标参数,为该地区滨海软土本构模型及参数的研究与应用提供参考。
Fuzhou, Kemen original silt unidirectional compression and triaxial consolidation undrained test. The relationship between the consolidation stress, the pore water pressure and the axial strain and the curve of the stress path during the change of the elastic properties of the silt to the plasticity in the coastal area of Fuzhou was obtained. The analysis of the test results shows that the consolidation yield stress of Fuzhou silt increases with the depth of the soil, but the compressive modulus has no relation with the depth. Through the triaxial test and the three-axis consolidation-rebound-recompression test, the index parameters of the modified Cambridge model of soft soil in Fuzhou are obtained, which can provide references for the research and application of constitutive models and parameters of coastal soft soil in this area.