我国沿海地区软黏土压缩指数统计及与国外其他地区对比

发布时间：2018-03-29 18:11

本文选题：软黏土　切入点：压缩指数　出处：《岩土力学》2017年09期

【摘要】：国内学者对我国沿海各地区软土的压缩指数与物理指标的相关性进行了详细的研究,但针对这些统计关系的整体分析以及与国外研究成果的对比仍然比较缺乏。通过对比国外不同地区的压缩指数与液限(8个)、压缩指数与初始孔隙比(7个)、压缩指数与天然含水率(6个)的关系式,发现压缩指数与天然含水率之间的相关性较好,并给出了一个适用范围更广的统计关系。收集我国沿海多个地区的压缩指数与天然含水率统计关系式以及试验数据,对比发现压缩指数与天然含水率的线性关系整体上可以分为两类:南方地区(深圳、广州)具有较低的斜率,约为0.008,与国外的0.01较为接近;而北方地区(天津、连云港、上海)具有较大斜率,约为0.02。这可能与土的结构性有关。还就土样质量对压缩指数与天然含水率统计关系的影响以及Lambe和Whitman提出压缩比与天然含水率统计关系的适用性进行了评价。
[Abstract]:Domestic scholars have made a detailed study on the correlation between the compression index and physical indexes of soft soil in various coastal areas of China. However, the overall analysis of these statistical relationships and the comparison with foreign research results are still lack. By comparing the compression index and liquid limit of different regions in foreign countries (8), compression index and initial void ratio (7), compression index (7). The relation between number and natural moisture content (6), It is found that there is a good correlation between compression index and natural moisture content, and a more extensive statistical relationship between compression index and natural moisture content is given. The statistical expression of compression index and natural moisture content in many coastal areas of China and the experimental data are collected. The comparison shows that the linear relationship between compression index and natural moisture content can be divided into two categories as a whole: the southern region (Shenzhen, Guangzhou) has a relatively low slope, about 0.008, which is close to 0.01 in foreign countries, while the northern region (Tianjin, Lianyungang), Shanghai) has a large slope, The effect of soil sample quality on the statistical relationship between compression index and natural moisture content and the applicability of Lambe and Whitman to the statistical relationship between compression ratio and natural moisture content were evaluated.
【作者单位】：同济大学土木工程学院地下建筑与工程系;麻省大学阿默斯特分校环境与土木工程系;
【分类号】：TU447

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