INFLUENCES OF PERMEABILITY AND CONSOLIDATION SETTLEMENT ON STRUCTURE OF SOFT CLAY
INFLUENCES OF PERMEABILITY AND CONSOLIDATION SETTLEMENT ON STRUCTURE OF SOFT CLAY
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发表时间：
2006
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通讯作者：
Xie Yongli
中科院分区：
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作者：
Xie Yongli
软粘土的结构性对土体的物理力学性质有很大的影响，特别是对土体的固结变形和液体的流动速率有很大的影响，目前这方面的研究仍是热点问题，采用改装的K0固结仪，该仪器可同时进行固结试验和渗透性试验，根据K0固结试验和渗透性试验，以天然土和重塑土为例，分析了软粘土结构性对液体流动速率的影响，提出了渗透系数和孔隙比的计算公式，通过对软土应变特性的试验分析，用土体结构强度来反映土体变形的影响，在分析变形机理的基础上，提出了考虑土体结构性的沉降计算方法，根据定义提出了固结渗透系数的新计算方法，该计算方法克服了传统方法的不足，可在COBOL语言上实现，并通过达渝高速公路工程实例，对公路地基实测结果与该方法计算结果进行了比较，验证了该方法的有效性。
The structure of soft clay has great influence on the physico-mechanical property of the soil body,particularly on the consolidation deformation and the flowing rate of liquid of the soil body.Currently,this aspect is still a hot issue.The refitting K0 consolidometer is used,and the experiment of consolidation or permeability can be performed on this instrument at the same time.According to the experiment of K0 consolidation and permeability of natural soil and remolded soil,the influences of the structure of soft clay on the flowing rate of a liquid are analyzed,and the calculation formula of coefficient of permeability and pore ratios are proposed.According to the trial analysis of strain characteristic of soft soil,the structural strength of the soil body is used to reflect the influence of soil body transform.Based on the foundation of the analytical deformation mechanism,the settlement-computing method that considers the soil body structure is put forward.According to the definition,the new method of the permeability of consolidation is presented.This computation method avoids the weakness of traditional method and can be performed on the COBOL.Through the example of engineering on Dazhou— Chongqing Highway,the measured results of the highway foundation is compared to the result of the method,and the availability of this method is verified.