STUDY ON RHEOLOGICAL DIACHRONIC PROPERTY CONSIDERING STRUCTURAL CHARACTERISTICS OF SOFT DREDGER FILL
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摘要: 通过三轴流变试验仪,以原状土样与重塑土样为试验材料,对吹填软土流变历时特性进行了研究。研究结果表明:结构性对土体流变特性有明显影响。结构性的存在,使得原状土流变破坏峰值高于重塑土;当应力低于结构屈服应力时,由于结构性的作用,抵抗变形能力强,使原状土流变趋于稳定的时间要小于重塑土;当应力高于结构屈服应力时,随着结构的破坏,其流变历时特性逐渐向重塑土靠拢,最终趋于一致。Abstract: Based on undisturbed and remolded samples as test materials, triaxial rheometer was used to studyrheological diachronic characteristics of soft dredger fill. The results showed that the structure affected rheologicalproperties significantly. Because of structure, the undisturbed soil rheological damage peak was higher than that ofremolded soil. When the stress was lower than yield stress, the stable time of rheology of the undisturbed soil was lessthan remolded soil due to the structure' s resistance to deformation. When the stress was higher than yield stress,along with structural damage, its rheological duration characteristics gradually tended to the ones of the remolded soil,eventually to the same.
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