国标与美标土工试验数据转换的分析  

Geotechnical Test Data Conversions Between Chinese Standards and US Standards

作　　者：唐征宏 TANG Zhenghong(WSGRI Engineering&Surveying Co.Ltd.,Wuhan 430080)

机构地区：[1]中冶武勘工程技术有限公司,武汉430080

出　　处：《土工基础》2024年第5期845-848,共4页Soil Engineering and Foundation

摘　　要：在国外某工程勘察中,土工试验资料需要按照中美两个标准提供。对比分析国标和美标,两者主要在颗粒分析、液限和土的分类这三个方面有较大的区别。通过把同一试样分别按照国标和美标进行筛分和液限试验,结果表明:(1)同一试样的筛析结果,国标与美标对应粒径的筛分含量相近,偏差在5%以内,可相互转换使用,不会对工程性质产生较大影响;(2)同一试样国标和美标液限数据进行线性拟合,得出国标与美标液限关系方程式,可通过关系式互相转换;(3)把颗粒分析和液限进行国标与美标的相关转换后,可对照分类标准进行定名的转换。In a foreign geotechnical investigation project,the geochemical test results are required to be provided in accordance with both the Chinese national standards(GB/T 50123-2019)and United States standards(ASTM).The major differences in these standards are in three aspects,namely,grain size distribution,liquid limit,and soil classifications.The sieve analysis and the liquid limit tests are performed on the same soil sample according to the Chinese national standard and US standards,respectively.The results show that:(1)Under the sieve analyses on the same soil sample,the difference between both standards is within 5%and can be used interchangeably without significantly affecting the engineering results.(2)For the liquid limit results,a linear regression analysis is performed between the results using both standards.And a linear relationship exists.(3)After the relevant conversion of the grain size distribution analysis and the liquid limit between the Chinese national standards and the US standards,the soil classification name conversion can be converted accordingly.

关 键 词：国标(GB/T 50123-2019) 美标ASTM 颗粒分析 液限 土的分类 

分 类 号：TU411[建筑科学—岩土工程]