摘要
文章结合广西贵港至合浦高速公路工程软基换填量大,砂砾、碎石、片石等料源紧张,沿途弃土场征地困难等特点,从物理分析、化学分析两个角度对公路沿线花岗岩残积土展开研究,探究其作为软基换填材料的可能性。实践证明,采用片石+碎石垫层+强度较高、压实性能较好的砂性土、角砾土对项目区软基进行处治,可以达到规范要求,从而也证实了花岗岩残积土可以作为贵港至合浦高速公路软基换填材料。
Combined with the characteristics of Guangxi Guigang-Hepu Expressway project, such as large amount of soft foundation replacement,lack of material sources of gravel,broken stone,and rubble, and the difficulty of land acquisition for spoil field along the route, this article studied the granite residual soil along the highway from physical analysis and chemical analysis, and explored its possibility as the soft foundation replacement material.Practices proved that the use of rubble ＋ gravel cushion layer ＋ sandy soil and gravel soil with higher strength and better compaction performance for the treatment of soft foundation in project area can meet the regulatory requirements, which also confirmed that the granite residual soil can be used as soft foundation replacement materials of Guigang- Hepu Expressway.
出处
《西部交通科技》
2017年第4期19-23,共5页
Western China Communications Science & Technology
基金
2014年广西交通运输厅科技项目"广西公路软土地基处治技术标准化研究"
关键词
高速公路
花岗岩残积土
软基处治
换填材料
Expressway
Granite residual soil
Soft foundation treatment
Replacement material
