摘要
研究了海南中线高速公路屯昌至琼中段花岗岩残积土快剪强度指标粘聚力c及内摩擦角同粒度成分的关系,统计结果表明c及值主要由土中大于2 mm的颗粒含量ρ2所控制,且该含量以20%为分界。根据统计分析,给出了c及值与ρ2之间的回归公式,通过海南省万宁至洋浦高速公路试验数据的验证,证明该回归公式可用于海南岛花岗岩残积土抗剪强度参数的估计。
The relations among the direct shear strength,microstructure and composition of granite residual soil are discussed.The friction angle and cohesion is mainly controlled by the content of particles greater than 2.0 mm.It finds out that the demarcation point of grain content is 20%.The relationship between the shear strength and the grain content is given throw regression analysis.The regression formula is provided to be effective by expressway engineering.
作者
熊峥
Xiong Zheng(Hainan Province Highway Survey and Design Institute, Haikou 570206, Chin)
出处
《山西建筑》
2018年第2期62-63,共2页
Shanxi Architecture
基金
海南省重点科技计划项目:海南岛高液限土路堤修筑技术研究(ZDXM2014100)
关键词
花岗岩残积土
强度参数
回归分析
granite residual soil, strength parameter, regression analysis
