摘要
基于某高速公路红黏土高填方路基强夯法处治施工实践,对强夯法处治方案,夯击沉降量、填土压实度进行检测阐述,并取样进行室内试验。通过对夯击次数和夯沉量变化曲线分析,确定最佳落距和夯击次数分别为10 m和6次。对比分析夯实前后填土压实度检测结果,确定夯点间距为4.5±0.5 m;通过标准贯入试验,并结合室内土工试验数据,说明强夯法加固红黏土高填方路基达到了预期的加固效果。
Base on the construction practice of the dynamic compaction treatment of red clay high fill subgrade of a highway,the treatment scheme of dynamic compaction,the ramming settlement and the compactness of filling soil were tested.According to the analysis of the changing curves of ramming times and ramming settlement,the optimum fall distance and tamping times were determined to be 10 m and 6 times respectively.Comparing and analyzing results of filling compactness before and after ramming,the distance of ramming points was determined to be 4.5±0.5 m.Through standard penetration test combining with results of indoor soil test,it can be proved that the reinforcement of red clay high fill subgrade by dynamic compaction has achieved the expected reinforcement effect.
作者
郜安安
GAO An-an(Shanxi Jinzhong Road and Bridge Construction Group Co.,Ltd.,Jinzhong,Shanxi 030600,China)
出处
《山西交通科技》
2020年第1期40-42,49,共4页
Shanxi Science & Technology of Transportation
关键词
红黏土
高填方路基
强夯法
夯击沉降量
压实度
标准贯入试验
red clay
high fill subgrade
dynamic compaction
ramming settlement
compactness
standard penetration test
