扁铲侧胀试验(DMT)在强夯效果检验中的应用  

Application of the Flat Dilatometer Test(DMT) in Effect Test of Dynamic Compaction

作　　者：朱帆济 袁灿勤[2] 於李军 郭元科 司银良 

机构地区：[1]武汉市政工程设计研究院有限责任公司,武汉430015 [2]南京工业大学土木工程学院,南京210009 [3]陕西省机械施工公司南京分公司,南京210046

出　　处：《建筑科学》2009年第11期63-66,共4页Building Science

摘　　要：扁铲侧胀试验对水平应力具有较高的灵敏度,可用于地基土压实效果的检验。南京龙潭港三期工程采用强夯法加固铁矿石堆场,在试验D区及E区采用室内土工试验、静力触探试验及扁铲侧胀试验检验强夯加固效果。通过对比发现：夯后MDMT/ES1-2及MDMT/PS分别增加为夯前的1.4~2.0及1.3~2.9倍,表明扁铲侧胀试验对水平应力更敏感,较其他原位测试试验更适用于强夯效果的检验。The DMT, due to its high sensitivity to the horizontal stress（ah）, can be used to inspect the result of soil compaction. Dynamic compaction was applied to the iron ore dump in the third stage of LongTan Port project in Nanjing. Some method are recommended to monitor soil improvement by using the soil tests,the cone penetration test and the flat dilatometer test in D area and E area. By comparing the testing results of DMT with other tests before and after compaction, MDMT/Esl-2 and MDMT/Ps increase about 1.4 - 2.0 times and 1.3 - 2.9 times respectively. It is proved that the DMT is particularly more suitable to monitoring soil improvement than other tests.

关 键 词：强夯法 静力触探 土工试验 扁铲侧胀试验 扁铲侧限模量 

分 类 号：TU413.4[建筑科学—岩土工程]