弱风化石粒料结构强度与组成关联因素  

Relationship between structure strength and composition for weakly-weathered-stone-gravel

作　　者：徐鸥明[1] 韩森[1] 郝培文[1] 肖庆一[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《长安大学学报（自然科学版）》2006年第5期21-25,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：国家西部交通建设科技项目(200231800048)

摘　　要：为了评价弱风化石粒料的结构强度以及影响因素,采用加州承载比(CBR)试验和大型直接剪切试验,结合灰色关联分析方法,研究了弱风化石粒料的变形、强度宏观结构性能与不同组成指标的关系以及关联度。根据试验结果分析得到弱风化石CBR值、抗剪强度剪切角φ值与弱风化石粒料组成中最大粒径、粒料大于4.75 mm含量(质量含量)、小于0.60 mm含量、小于0.075 mm含量之间的关系及关联度。结果表明:影响弱风化石粒料结构强度的关键因素是集料最大粒径、粒料大于4.75 mm含量、小于0.60 mm含量和小于0.075 mm含量等;粒料最大粒径及粒料大于4.75mm含量对粒料结构性能影响最大,小于0.60 mm含量次之,影响最小的是粒料小于0.075 mm含量。In order to evaluate the structural strength and influencing factors of weakly-weathered stone-gravel, the relationship between macrostructure performance, such as transfigurat strength, and different compositive indexes was studied by combining CBR test and large stra shearing test with grey connection analysis method. Through analyzing the test results, the relationship between CBR value and anti-shearing strength φ value with maximum size, the content of partical that is over 4.75 mm, the content of partical that is below 0.60 mm and the content of partical that is below 0. 075 mm was obtained. The result shows that the key factors are maximum size, the content of partical that is over 4.75 mm, the content of partical that is below 0.60 mm and the content of partical that is below 0. 075 mm, but the most important indexes among them are maximum size and coarse content, the follow ones are particle content that is below 0.6 mm and fine content. 6 tabs, 9 figs, 6 refs.

关 键 词：道路工程 弱风化石粒料 结构强度 抗剪强度 关联分析 

分 类 号：U414.11[交通运输工程—道路与铁道工程]