文献类型：期刊文献

中文题名：扁铲侧胀试验及其工程应用研究进展

英文题名：Research Progress of Flat Dilatometer Test and Its Engineering Application

作者：刘斌奇[1];陈忠清[1,2];刘培成[1];朱泽威[1];吕越[1,2]

机构：[1]绍兴文理学院土木工程学院,浙江绍兴312000;[2]浙江省岩石力学与地质灾害重点实验室,浙江绍兴312000

年份：2021

期号：8

起止页码：8

中文期刊名：科技通报

外文期刊名：Bulletin of Science and Technology

收录：CSTPCD

基金：浙江省公益技术应用研究计划项目(No.2016C33052);2021年浙江省大学生科技创新活动计划(新苗人才计划)项目

语种：中文

中文关键词：原位测试;扁铲侧胀试验;不排水抗剪强度;液化;水平基床反力系数

外文关键词：in-situ test;flat dilatometer test;undrained shear strength;liquefaction;horizontal coefficient of subgrade reaction

中文摘要：扁铲侧胀试验(DMT)作为一种原位测试技术,经历40年的发展,已在国内外岩土工程领域得到广泛应用。梳理了DMT的改进及发展,总结分析了国内外基于DMT估算静止侧压力系数(K_(0))、不排水抗剪强度(C_(u))、抗液化强度(CRR)及水平基床反力系数(K_(h))的工程应用经验。结果表明:DMT的改进主要体现为测试功能多元化,测试过程便捷化,以及测试结果的可靠性增强,将在海洋岩土工程等新兴领域的应用中得到进一步发展;国外自1980年代开始DMT的应用研究,积累了较丰富的研究成果,而国内关于DMT的工程应用经验总体上不够丰富,有必要结合不同地区的土性特征及沉积历史,进一步开展DMT估算K_(0)、C_(u)、CRR及K_(h)的适用性及改进研究。为促进扁铲侧胀试验在国内岩土工程勘察设计领域的应用研究提供借鉴。

外文摘要：The flat dilatometer test(DMT)is a common in-situ test technology,which has been widely used in geotechnical engineering at home and abroad since the 1980 s.The improvement and development of the DMT were reviewed,and the experiences of engineering application based on DMT such as estimating static lateral pressure coefficient(K_(0)),undrained shear strength(C_(u)),cyclic resistance ratio(CRR)and horizontal coefficient of subgrade reaction(K_(h))were summarized.The results show that(1)the improvement of DMT is mainly reflected in the diversification of test functions,the convenience of test process and the enhancement of reliability of test results,which will be further developed in the application of marine geotechnical engineering and other emerging fields;(2)the applied research of DMT in foreign countries such as the United States and Italy begin in the early 1980 s and has accumulated relatively rich research results,but the application and research of DMT in China is relatively poor in general.It is necessary to further study the applicability and improvement of DMT in estimating K_(0),C_(u),CRR and K_(h)by the consideration of soil properties and sedimentation history in different regions.This review can be used for reference to promote the application of DMT in geotechnical engineering investigation and design in China.