湿陷性黄土地基强夯有效加固深度预测

Prediction of Effective Improvement Depth of Collapsible Loess Treated with Dynamic Consolidation

对强夯有效加固深度主要影响因素进行分析,考虑能量的转化,综合运用量纲守恒和最小二乘原理,结合一定量的湿陷性黄土地基强夯加固实例,推导了有效加固深度估算公式,并与其他公式进行比较;再结合另外两组湿陷性黄土地基实例,进一步探讨了本文公式的估算效果。新的公式反映了含水量与有效加固深度呈非线性相关,能使得计算效果更好,参数选用方便,对湿陷性黄土地基有一定参考价值。

With the analysis of the main influential factors of the effective improvement depth of dynamic consolidation,the consideration of energy conversion,the application of dimensional conversation and least-square principle and combined with a certain amount of examples of collapsible loess treated with dynamic consolidation,a new formula for calculating the effective improvement depth is presented.The applicability of the formula is discussed by comparing with other formulas.The result of estimation is discussed by another two examples of collapsible loess treated with dynamic consolidation.The research shows that water content is nonlinear correlative with the effective improvement depth,the result of calculation is better and the choice of construction parameters is simple and convenient.It is demonstrated that the new formula has reference value for collapsible loess.