剪切波速与静力触探在砂土液化判别中的应用  

Shear Wave Velocity Test and Static Cone Penetration Test used for Discrimination of Liquefaction of Sandy Soils

作　　者：孙东风[1] 张宏明[1] 刘攀 Sun Dongfeng;Zhang Hongming;Liu Pan(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300222,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《港工技术》2018年第A01期135-139,共5页Port Engineering Technology

摘　　要：分析了砂土液化机理及目前国内外砂土液化判别的研究现状,结合如东地区现场勘察标准贯入试验、剪切波速试验和静力触探试验数据,建立剪切波速值与标准贯入试验击数、静力触探锥尖阻力与标准贯入试验击数之间相关关系,得出剪切波速与静力触探判别砂土液化新公式,并通过剪切波速与静力触探对如东地区砂土液化进行判别,判别结果与《抗震设计规范》与《岩土工程勘察规范》判别方法进行对比分析,探讨了该地区用剪切波速和静力触探判别砂土液化的可行性与适用性。The mechanism of the liquefaction is analyzed and the present status of research on the subject is described. Based on the test data from standard penetration test（SPT）, shear wave velocity test（SWVT） and static cone penetration test（CPT） conducted at a construction work site in Rudong area, the relations between the shear wave velocity and the SPT blow number N, and between static point resistance of CPT and SPT blow number N, have been established. From the relations a new formula has been derived for discrimination of sand liquefaction. The results of calculation by using the formula are compared with the results of calculation by using discriminate method in accordance with the ＂Code for seismic design of buildings＂ and ＂Code for investigation in geotechnical works＂. Discussions are given to the feasibility and applicability of discrimination of liquefaction of sandy soils by using the SWVT and CPT methods in this area.

关 键 词：剪切波速 静力触探 液化判别 

分 类 号：TU413.5[建筑科学—岩土工程]