高速公路工程填料承载比试验研究
Experimental Study on Load Ratio of Packing Materials in Expressway Engineering
李洁 1刘姝 2何昌2
作者信息
- 1. 武汉广益交通科技股份有限公司,湖北 武汉 430074;安徽广益科研检测有限责任公司,安徽 滁州 239000
- 2. 武汉广益交通科技股份有限公司,湖北 武汉 430074
- 折叠
摘要
文中以浙江某高速公路扩建项目为例,采用填料承载比(CBR)试验方法评估高速公路工程中路基土料性能.结果表明,砂土密度为1.8 g/cm3,含水率15%,粒度为0.425～2 mm,最大干密度为1.65 g/cm3,剪切强度为95 kPa,CBR值在2.54、5.08 mm穿透深度处分别为9%和8.5%;与黏土和粉土相比,砂土承载能力和稳定性更优.
Abstract
Taking an expressway expansion project in Zhejiang Province as an example,the paper adopts the method of filling load ratio(CBR)test to evaluate the performance of subgrade soil in expressway project.The results show that the sand density is 1.8 g/cm3,the water content is 15%,the particle size is mainly between 0.425 mm and 2 mm,the maximum dry density is 1.65 g/cm3,the shear strength is 95 kPa,and the CBR value is 9%and 8.5%at the penetration depth of 2.54 mm and 5.08 mm,respectively.Compared with clay and silt,sand has better bearing capacity and stability.
关键词
填料承载比/工程检测/评估模型Key words
Filling load ratio/Engineering inspection/Evaluation model引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据