摘要
论述了导致土性指标不确定性的主要原因,并介绍了抗剪强度指标的统计方法和概型分布拟合检验方法的具体实施步骤。对北京地区粘性土土性指标的统计分析表明:粘土土性指标的均值、标准差和变异系数具有明显的区域特点,力学参数的分布多为正态分布,因而,在工程可靠度的计算中,各指标均可用正态分布来拟合。
The major reason for uncertain physical and mechanical indexes of clay is discussed, and the statistical methods and distribution check procedure are introduced. The statistical analysis of physical and mechanical indexes of alcy in Beijing area show that there is regional distinction in average value、standard deviation and variation coefficient. The distribution of mechanical parameters of clay is almost normal distribution. Therefore, the distribution of clay indexes can be approximated by the normal distribution in engineering reliability calculation.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2003年第S2期180-184,共2页
Rock and Soil Mechanics
基金
中国科学院武汉岩土力学研究所前沿基础研究基金项目(编号:A010101)。
关键词
粘性土
土性指标
统计分析
clay
physical and mechanical indexes
statistical analysis
