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软土的结构性对土的物理、力学性质影响较大。文章针对太湖湖沼相天然沉积土,研究了软土的结构性对其压缩特性的影响。通过室内固结试验,分析了原状样和重塑样的压缩特性以及加荷速率的影响。试验结果表明,软土结构性对其压缩特性具有显著的影响。原状土的压缩曲线为前缓后陡的曲线形,而重塑土的压缩曲线近似为一条直线。加压速率越大,对土体结构扰动损伤越大,会导致地基产生过大的附加沉降。加荷速率采用1∶0.25或1∶0.5为宜。
The structure of soft soil has great influence on the physical and mechanical properties of soil. In this paper, aiming at the natural sedimentary soil in the marsh facies of Taihu Lake, the influence of structural properties of soft soil on its compression properties was studied. Through the consolidation test, the compression characteristics of the original sample and the remolded sample and the influence of the loading rate were analyzed. The experimental results show that the structural properties of soft clay have a significant impact on the compression characteristics. The compression curve of the undisturbed soil is a curve that is steep and gentle before the earth, while the compression curve of the remolded soil is approximately a straight line. The greater the rate of pressurization, the more damage the soil structure disturbance, will lead to excessive additional settlement of the foundation. The loading rate is 1: 0.25 or 1: 0.5.