摘要
通过击实试验,进行了击实功对最佳含水量和最大干密度的影响分析和不同强夯能级、施工参数的单位土体击实功和轻型、重型击实试验的单位土体击实功的分析比较,探讨了超高能级强夯处理低含水量湿陷性黄土的原理。试验证明,夯击功能越大,干密度越大,而相应的最优含水量越小;在一定夯点间距下,夯击能级越高、夯击数越多,土体所获得的夯击功能越大;超高能级强夯所达到的夯击功能,已超过了重型击实试验的击实功能的近一倍,将超高能级强夯用于处理低含水量的湿陷性黄土是可行的。
Through compaction test,this paper analyzes the influence of compaction function on the optimum water content and maximum dry density. Then the unit compaction function is compared under different dynamic compaction levels and construction parameters both in light and heavy compaction test.The principle of treating low water content of collapsible loess with ultra high energy level dynamic compaction is discussed. The test results show that firstly when the compaction function increase,the dry density is bigger,and the corresponding water content is small; secondly in a certain space of tamping,under higher compaction energy level and more compaction times,the compaction function will be greater; thirdly the function of ultra high energy level dynamic compaction is nearly two times of that of the heavy compaction test,so treating the low water content collapsible loess with ultra high energy level dynamic compaction is feasible.
出处
《施工技术》
CAS
北大核心
2015年第9期112-114,共3页
Construction Technology
关键词
地基
强夯
湿陷性黄土
击实功
原理
施工技术
foundations
dynamic compaction
collapsible loess
compaction function
principle
construction
