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在量纲分析的基础上,利用尺寸50cm×40cm×60cm(长×宽×高)的玻璃模型箱,采用3种不同干重度的砂土,对之施加4种不同能量的冲击能,观测了不同的夯击能作用时夯点下的地面变形与中心点下不同深度的竖向位移,拟合了位移—深度关系,建立了夯坑深度和有效加固深度与土质参数及施工工艺参数之间无量纲的相关方程,并用工程实例对方程进行了验证。结果表明:方程可有效地定量分析强夯时的夯坑深度和有效加固深度,对强夯法的设计与施工具有一定的指导意义。
On the basis of dimensional analysis, the impact energy of four kinds of different energies was applied to three kinds of sand with different dry weights by using a glass model box of size 50cm × 40cm × 60cm (length × width × height) The displacement and depth relationship of ground deformation under different tamping points and the vertical displacement at different depths under the center point under different tamping forces can be fitted to establish the relationship between the tampered pit depth, effective depth of reinforcement and soil parameters and construction process parameters The dimensionless correlation equations are verified by engineering examples. The results show that the equation can effectively quantitatively analyze the ramming pit depth and the effective reinforcement depth during dynamic compaction, which is of guiding significance to the design and construction of dynamic compaction method.