摘要
针对改扩建工程中新老路基结合部处治不良问题,结合实验路段技术应用实例,分别从路基结合部处治措施设计、测试方案和试验路段实施效果分析评价等方面进行研究。结果表明,结合部处治设计沉降量最高不超过5 cm,土工格栅在路基不协调变形过程中有效扩散上部荷载,减小不协调变形;土压力监测结果表明处治技术设计方案能够有效减少侧向土压力,增强路基结合部的稳定性。
In order to solve the bad problems in the combination of new and old roadbed in the reconstruction and extension project,combined with the technical application examples of the experimental section,this article made researches on the design of the treatment measures,the test plan and the implementation effect analysis and evaluation and so on.Results show that the settlement of the combined part is no more than 5 cm.At the same time,the geogrid can effectively diffuse the upper load and reduce the uncoordinated deformation during the uneven deformation of subgrade.The earth pressure monitoring results show that the design scheme of treatment technology could effectively reduce the lateral earth pressure and enhance the stability of subgrade joint.
作者
李新平
LI Xin-ping(Datong Highway Administration Office,Shanxi Datong 037047 China)
关键词
改扩建工程
路基结合部
处治技术
效果评价
reconstruction and extension engineering
subgrade combination
treatment technology
effect evaluation
