摘要
采用原位直剪试验、室内直剪试验等测试手段,运用最小二乘法、优定斜率法等数理统计方法,对机场高填方压实土的抗剪强度特性进行了分析.试验结果表明,对于大型复杂的场区,应采用多种试验方法来综合确定强度参数;水对填土的抗剪强度影响相当大,含水率越大,强度值降低越多;高填方土体应注意高应力作用下抗剪强度的变化;压实度影响填筑体的强度高低,但压实度lc与强度指标c和的定量关系有待进一步研究.
With the in - situ and indoor direct shear test, the least - square method, majorized inclined - ratio method and other mathematic statistics, shear strength properties of high fill and compaction soil of an airport are studied. The results of tests show that： it is needed that varied tests are employed to quantify reasonably shear strength parameters ; water influences the values of shear strength largely, higher water content causes lower values of shear strength; many attentions should be paid to the varieties of shear strength under high stress of high fill and compaction soil ; degree of compaction effects the shear strength, but the quantitative relations between degree of compaction and shear strength parameters are remaind to further study.
出处
《暨南大学学报（自然科学与医学版）》
CAS
CSCD
北大核心
2006年第5期664-669,675,共7页
Journal of Jinan University(Natural Science & Medicine Edition)
关键词
高填方
直剪试验
内摩擦角
黏聚力
high fill
direct shear test
internal friction angle
cohesion
