扁铲侧胀试验判别砂土的液化性研究  

Research on the predication of sandy soil liquefaction with flat dilatometer test

作　　者：徐宏妍 

机构地区：[1]南京南大岩土工程技术有限公司,南京210024

出　　处：《工程勘察》2014年第8期15-18,共4页Geotechnical Investigation & Surveying

摘　　要：扁铲侧胀试验(DMT)目前在工程勘察中应用越来越广,其在判别土类,确定粘性土的状态、静止侧压力系数、水平基床系数等方面已经比较成熟。但应用DMT判别砂土液化是一种新兴的方法,欧美一些国家在工程中已经得到应用,但我国目前应用DMT判别砂土液化仍处于研究发展阶段。本文对比了目前扁铲侧胀试验(DMT)与标准贯入试验(SPT)及国外广泛采用的Seed法在砂土液化判别中的特点,通过工程实例的大量试验数据,总结了DMT判别砂土液化的有效性及存在的问题,为DMT判别砂土液化的理论研究及推广应用提供一定的借鉴作用。The flat dilatometer test （DMT） is widely applied in engineering investigation, such as to determine the status of clay, the lateral earth pressure coefficient at rest, the horizontal foundation coefficient and the soil classification. But the predication of sandy soil liquefaction with flat dilatometer test （DMT） is a new approach. Although some European and American countries have applied it in engineering projects, the application of DTM in China is still in the development stage. The characteristics in the predication of the sandy soil liquefaction with the currently used the DMT and SPT （stabdard penetration test） methods and Seed method which widely used in abroad are compared. Through the large number of testing data from engineering cases, the validity for the predication of sandy soil liquefaction with DMT and the existing problems are summarized, which can provide some reference for the study of the theory on the predication of sandy soil liquefaction with DMT and its application.

关 键 词：DMT 砂土液化 SPT Seed法 

分 类 号：TU41[建筑科学—岩土工程]