轻型动力触探检测砂土相对密实度的试验研究

通过轻型动力触探室内模型试验,获取相对密实度和触探击数之间的定量关系,促进轻型动力触探在结构物台背砂土密实度检测中的应用。研究结论表明:相对密实度Dr与触探击数N10呈指数关系,触探击数N10随着相对密实度Dr的增加而明显增加;在同一密实度下,触探击数N10随着触探深度的增加而增加,随着密实度的增加,同一深度下所需的触探击数也随着增加;建立了砂土相对密实度与轻型动力触探击数、触探深度的关系。

Experimental Study on Sand Relative Compactness Detection with Light Dynamic Sounding

The quantitative relation between relative compactness and sounding number is obtained through light dynamic sounding laboratory model experiment. It can promote the application of light dynamic sounding in structure back sand compactness detection. The results show that： the relative compactness Dr is in exponential relationship with the sounding number N10. N10 increases significantly as Dr increases. Under the same compactness, N10 increases as the sounding depth increases, and as the compactness increases, the required sounding number in the same depth increases too. The relation between sand relative compactness and light dynamic sounding number and sounding depth is constructed.