摘要
在季冻区黄泛粉土地基进行了不同夯击能的强夯试验,通过监测试验过程中的地下水位、孔隙水压力、地表沉降量和压实度的变化规律,对比不同夯击能对季冻区黄泛粉土地基的处理效果。针对高夯击能强夯加固效果反而比低夯击能效果更差的现象,从熵、能量和垫层强夯的角度分别进行分析,得出季冻地区强夯施工需保护并利用冻土层的结论。
Heavy tamping test with different energy was carried out on seasonal frozen soil layer.During the field test,the water table,pore pressure,ground settlement as well as the degree of compaction was monitored.It was found that the effect of high energy heavy tamping was worse than that of low energy.The interpretation of the phenomenon was carried out from three aspects:the entropy,energy and cushion compaction.The conclusion was that the seasonal frozen area should be protected and utilized when the dynamic compacting method was used.
作者
张磊
罗鑫
ZHANG Lei;LUO Xin(Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, China;Chengdu Municipal Engineering and Research Design Institute, Chengdu 610015,China)
出处
《交通科技》
2018年第6期125-129,共5页
Transportation Science & Technology
关键词
黄泛区
季冻区
粉土地基
强夯处理
效果评价
flood area of Yellow River
seasonal frozen area
silt foundation
dynamic compaction
effect evaluation
