摘要
为了探究不同夯击参数下湿陷性粉土的加固效果,以新疆北山坡干渠湿陷性渠道基础处理为例,采用六种不同施工夯击参数,对该湿陷性地基的击实加固效果进行了试验研究。研究结果表明:采用YTQH350夯击型号,夯击间距7×7m,进行点夯2遍和满夯1遍,夯击能分别为4 000k N·m和2 000 k N·m时,夯击区域在含水率、干密度、湿陷性系数以及地基承载力等各项物理力学指标综合表现最好,夯击压实效果最佳,达到了安全可行经济可靠的工程目的。
In order to discover the improvement effect of collapsible silt in different tamping parameters ,the paper takes the foundation treatment of the main collapsible channel of the north hillside in Xinjiang as a case study.Six tamping parameters are adopted to test the compaction improvement effect of the collapsible silt above.The result shows that,with type YTQH350,the tamping space is 7×7m,and with twice spot tamping and and once full tamping,the tamping energy turns out to be 4 000kN·m and 2 000 kN·m respectively.It seems that most of the physic-mechanical indexes show their best performance in such condition ,as well as the compaction performance,which reaches the project goal of being safe,feasible,economical and reliable.
出处
《吉林水利》
2018年第1期35-37,62,共4页
Jilin Water Resources
关键词
强夯
湿陷性渠道
黄土
夯击参数
压实效果
dynamic compaction
collapsible channel
silt
tamping parameters
compaction performance
