山区高填方土石混填路基强夯方案优化研究

Research on Dynamic Consolidation Scheme for High Embankment Filled by Earth-rock Mixtures in Mountain Region

利用多道瞬态瑞雷波检测技术,确定了1 000 kN.m、1 600 kN.m、2 000 kN.m 3种不同夯击能的有效加固深度为4 m5、m5、.7 m;通过强夯施工应力重合范围的试验研究,得出了强夯过程中相邻夯点交叉作用的应力重合规律,确定了"大间距、两遍夯"的强夯施工方案;以加固每平方米路基所均摊的夯击能作为评价强夯施工成本的指标,优化了原有土石混填路基的强夯施工方案。

Multi-Channel Transient Rayleigh wave method is used to detect the best effective depth of different ram energy of 1 000 kN·m,1 600 kN·m and 2 000 kN·m,which separately are 4 m,5 m and 5.7 m.Stress-coincide regular of the adjacent tamping points is proposed based on the heavy tamping test,as well as the best dynamic consolidation scheme is determined,which is wide interval and two times consolidation.The lamping energy of per square meter consolidation is used as the evaluating indicator of dynamic construction cost,and the original dynamic consolidation schemes are optimized.