论文部分内容阅读
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。
Domestic scholars have done a detailed study on the correlation between the compressibility index and the physical index of the soft soil in various coastal areas of our country. However, the overall analysis of these statistical relations and the comparison with the overseas research results are still relatively scarce. Comparing the compressibility index with the liquid limit (8), the compressibility index and the initial void ratio (7), the compressibility index and the natural moisture content (6) in different regions of foreign countries, we found that between compressive index and natural water content The correlation is good, and gives a wider range of statistical relations. Comparing the statistical relationship between compression index and natural water cut in many areas along the coast of our country and the experimental data, the linear relationship between the compression index and natural water cut can be divided into two categories: the southern area (Shenzhen, Guangzhou) The slope is about 0.008, which is closer to 0.01 in foreign countries. The northern slope (Tianjin, Lianyungang and Shanghai) has a larger slope of about 0.02. This may be related to the structural nature of the earth. The effect of soil mass on the statistical relationship between compression index and natural moisture content and the applicability of the statistical relationship between compression ratio and natural moisture content proposed by Lambe and Whitman were also evaluated.