国内外标准中砂性土内摩擦角确定方法对比  

Comparison of methods for determining internal friction angle of sand by domestic and foreign standards

作　　者：刘宁 刘杰[1] LIU Ning;LIU Jie(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)

机构地区：[1]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2021年第1期42-47,共6页Port & Waterway Engineering

摘　　要：内摩擦角是土体的抗剪强度指标之一,反映了土体的摩擦特性,是岩土(尤其砂性土)工程设计的重要参数。在大量的室内和原位试验、分析研究和工程实践基础上,国内外标准提供了较多针对砂性土内摩擦角的经验取值和理论计算方法。通过对比国内相关标准、国外常用的美国标准API和Engineer Manual、欧洲标准Eurocode和BS6349以及一系列研究中关于砂性土内摩擦角的确定方法,系统总结各方法的差异性。分析认为在无室内试验情况下通过原位试验确定砂性土内摩擦角的方法技术合理、操作可行,为国内和海外工程设计中砂性土内摩擦角的选取提供一定参考。The internal friction angle is one of the soil shear strength indexes which reflects the friction characteristics of soil,and is an important input parameter in geotechnical engineering design,especially for sand.Based on a mass of laboratory tests,in-situ tests,research studies and engineering practices,many empirical values and theoretical calculation formulas for the internal friction angle of sand are presented in domestic and foreign standards.By comparing the determination methods in domestic standards,American standards API&Engineer Manual,European standards Eurocode&BS 6349 and a series of international literature,the differences of various methods have been summarized.It is concluded that in the absence of laboratory test results,in-situ testing method to determine the internal friction angle is reasonable and feasible,which can provide some reference for related design work in domestic and overseas projects.

关 键 词：砂性土 内摩擦角 国内外标准 原位试验 

分 类 号：U652[交通运输工程—港口、海岸及近海工程] TU43[交通运输工程—船舶与海洋工程]