《土工试验方法标准》ＧＢ５０１２３是由南京水利科学研究院会同建筑、铁道、交通部门有关单位，在１９８８年颁布的国家标准《土工试验方法标准》ＧＢＪ１２３—８８基础上修订而成。该标准在修订过程中，收集了国内外资料，结合工程发展需要，反复进行研究讨论，认为经过多 The “Standard for Geotechnical Test Methods” GB50123 was revised by the Nanjing Hydraulic Research Institute in conjunction with the relevant units of the construction, railway, and transportation departments, and the national standard “Standard for Geotechnical Test Methods” GBJ123-88, which was promulgated in 1988. During the revision process, the standard collected domestic and foreign data, combined with the needs of the development of the project, repeated research and discussion, and considered that