黄土的组分及微观结构特征与地基承载力  

Microstructure Characteristics and Foundation Bearing Capacity of Loess

作　　者：石刚[1] 支喜兰[1] 马建秦[1] 刘怡林[2] 

机构地区：[1]长安大学,陕西西安710064 [2]交通部公路科学研究所,北京100088

出　　处：《公路交通科技》2005年第12期46-49,共4页Journal of Highway and Transportation Research and Development

基　　金：交通部西部交通建设科技资助项目(200131822316)

摘　　要：针对黄土地基强度机理形成的复杂性,在黄土地区选取了3个具有代表性的公路工程试验点,应用显微镜、SEM(扫描电子显微镜)分别对3个地点土体的微观结构进行观察,并与岩石化学全分析、室内土工试验、载荷板试验的结果对比,从微观结构机理上分析了黄土的结构特征与工程力学性质的关系。研究成果对黄土地基承载力的评价、分析黄土地基承载力的变化规律以及地基处理等方面具有重要的参考价值。Since the formation of groundwork intensity mechanism of loess is complex, we select three typical sites of highway engineering in loess area as the objects for our study based on the formation of groundwork intensity mechanism. The microstructure of loess is observed under microscope and SEM （scanning electron microscope） on these three points. The results are compared with the results through chemical analysis of rock, earth test in lab and plate loading test. The relation between the structure characteristics of loess and engineering mechanics is studied in terms of micmstructure mechanism. The conclusions of our study are quite significant for the evaluation of the foundation bearing capacity of loess, the analysis of the regularity of the changes in the foundation beating capacity of loess and the treatment of groundwork.

关 键 词：黄土 公路工程 微观结构 显微镜 扫描电镜 

分 类 号：TU444[建筑科学—岩土工程]