扁铲侧胀试验检测地基处理效果  

Application of flat dilatometer test in verifying ground treatment effect

作　　者：刘晶[1] 袁灿勤[1] 刘建胜 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]烟台建源建筑装饰有限公司,山东烟台264400

出　　处：《南京工业大学学报（自然科学版）》2008年第4期74-78,共5页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：扁铲侧胀试验（DMT）在岩土工程中已经获得广泛应用，尝试了用其检测地基处理的效果．在南京龙潭港三期工程中，采用强夯法进行地基处理，并应用DMT结合静力触探试验来检测地基处理的效果．试验结果表明，DMT具有操作简单快捷、对土体扰动小、测试参数多等优点．通过比较强夯前后竖向排水侧限模量肼。MDMT及其与比贯入阻力Ps之比的变化，发现经过强夯处理后，MDMT和MDMT／ps均增加约1．5～2．0倍，表明扁铲侧胀试验在检验地基处理效果方面较其他试验作用更加明显．Flat dilatometer test（DMT） was widely used in geoengineering to verify ground treatment effect. Dynamic compaction was applied in the third stage of LongTan Port project in Nanjing for ground treatment, DMT and static penetration test were used for verifying the effect of ground treatment. The results reflect that DMT is simple to be operated, has less disturbance in soil and obtains more parameters exactly. By comparing verticaly drained and laterally constrained modulus MDMTWith ratios of specific penetration resistance Ps to it （MDMT） before and after dynamic compactions, it was found that MDMT and MDMT/Ps increase about 1.5 to 2.0 times after dynamic compaction. Comparing with other in-situ tests, DMT plays a more effective role in verifying ground treatment effect.

关 键 词：扁铲侧胀试验 地基处理 强夯法 侧限模量 

分 类 号：TU413[建筑科学—岩土工程]