摘要
公路工程中常采用路基扩宽技术,本文研究了几种控制公路扩宽路基变形的技术,例如削坡构造台阶、轻质填筑土和增设土工材料等,分别从增加新旧路基接合面抗剪变形能力、降低路基自重和提升新旧路基变形协调能力等方面,一定程度降低了新旧路基的差异沉降。其中采用轻质路基填料和增设土工材料混合的方法能够大幅提升扩宽路基的工作性能。本文研究可为后续的研究提供支撑。
Roadbed widening technology is always applied in highway engineering.Several technologies to control highway widened roadbed deformation was studies through literature this article.Method such as cutting slope and structure steps,light-weight filling soil and adding geotechnical materials,etc.,respectively,from the aspects of increasing the shear deformation capacity of the joint between the new and old subgrade,reducing the weight of the subgrade and improving the deformation coordination capacity of the new and old subgrade,reduced the differential settlement of roadbed to a certain extent,Among them,the method use of lightweight roadbed fillers and the addition of geo-materials can greatly improve the working performance of the widened roadbed.The research in this article can provide some support for subsequent research.
作者
罗凤伟
Fengwei Luo(Qiannan Prefecture Navigation Development Center,Qiannan 558000,Guizhou,China)
出处
《青海交通科技》
2021年第3期86-89,共4页
Qinghai Transportation Science and Technology
关键词
变形
差异沉降
轻质土
路基扩宽
土工材料
deformation
differential settlement
lightweight soil
roadbed widening
geotechnical materials
