Abstract:

This paper takes the soft soil in Zhongshan port area as the research object. Many physical and mechanical indexes obtained from the spot, laboratory test and in-situ test have been analyzed. The results, which are compared with the soft soil from Nansha and Pearl River Delta, indicate that the variation of the water content, void ratio, compressibility in here are lower than these in other places. But its mechanical characteristics are still poor because of its low bearing capacity. In order to understand the relationship between the indexes, the linear and nonlinear regression equations are established. This research shows that the correlations of void ratio, moisture content and dry density in this area are the best. By analyzing the water content, void ratio, compression coefficient and cohesive force in different places in Zhongshan port area to describe the longitudinal variation curve, the curve shows that the soil indicators of the longitudinal change rule have regional differences. The results can be used for reference in the engineering construction in this area.

Key words: soft soil; Zhongshan port area; physical and mechanical indexes; the degree of correlation; longitudinal change rule