摘要
红黏土在中国云南省境内广泛分布,其物质组成、结构特征及物理力学性质不同于一般的黏土,具有表面收缩现象、上硬下软、胀缩性与复浸水性、裂隙发育等典型而复杂的工程特性。在理论研究结合工程实践的基础上,通过红黏土的成因机制研究,深入分析其具有的特殊工程性质,并通过标准贯入试验得出试验锤击数与红黏土状态、地基承载力、抗剪强度指标和变性参数的函数变化规律,与室内土工试验的研究对比,分析其地基承载力的差异性及影响因素,对工程建筑场地稳定性的评价及地基基础的经济合理设计、处理具有参考意义。
Red clay is distributed widely in Yunnan province.Composition,structural characteristics,physical and mechanical indexes are different from general soil.Red clay has typical and complex engineering properties with surface contraction,expansion and contraction,cracks growth and so on.On the basis of theoretical study and engineering practice,by the in-depth study of adamic earth genetic mechanism,the paper obtained function variation of SPT blow count and red clay status,ground bearing capacity,shearing strength index,deformation parameters by the field test（SPT）.With the contrast of sub-soil test,the paper analyzed ground bearing capacity difference and influencing factors.It has significance for stability evaluation of project construction field and economic reasonable design.
出处
《资源环境与工程》
2013年第3期257-262,共6页
Resources Environment & Engineering
关键词
红黏土
特性
物理力学指标
差异性
影响因素
red clay
characteristic
physical and mechanical indexes
difference
influencing factors
