摘要
土的强度在土木工程中有重要意义，它是计算地基承载力、土坡稳定性和挡土墙上土压力的关键。现今国内外强度理论中，对无粘性土只计算内摩擦角ψ，粗粒土采用天然休止角α。作者进行了大量大型三轴压缩试验与现场陡坡试验并经工程实践，证明粗粒土中存在一种新的力。此力非通常的内摩擦力，称为咬合力。由于咬合力的存在，使粗粒土的强度大幅度提高。目前我国国家规范与一般高校教材中均无此内容。因此，这项研究具有相当的科学与经济价值。
The strength of the soil is very important in civil engineering. It is a key for calculating the subsoil bearing capacity, the slope stability and the earth pressure on the retaining wall.In all of the strength theory, only calculate the angle of internal friction for the cohesionless soil. It was adopted the natural angle of repose for the coarse grained soil.The author made a lot of the large triaxial compression test and the abrupt slope test in site.Through these tests and engineering practice,it was proved that there is a newforce in the coarse grained soil.It is not the force of internal friction, it means the interlocking force. It may raise the strength of the coarse grained soil. At present,there is not this content in the national standard or in textbook. So this research work has important scientific and economic value.
出处
《工程力学》
EI
CSCD
1994年第4期56-63,共8页
Engineering Mechanics
关键词
粗粒土
咬合力
地基
承载力
coarse grained soil
interlocking force
structure force
angle of friction - resistance.
