摘要
对某城市道路设计中可液化粉砂层路基进行咬合水泥搅拌桩地基处理(路基加固及管沟基坑止水止土),在地下水位较高的情况下完成管沟的开挖及回填,保证路基承载力、控制路面沉降及有效避免管道开裂。通过疏桩、咬合桩及满铺桩3种方案及试验段检测结果,在地基承载力、开挖效果、施工难度及经济等方面的各项参数比选,确定10 cm咬合桩为该项目最理想方案,在某种程度上为本地区相似工程的设计与施工提供了一定的参考意见。
This paper treats the liquefiable silt layer subgrade in a city road design with bitumen cement mixing pile foundation treatment(reinforcement of the subgrade and water-stopping of soil in the trench of the trench),and excavation of the trench under high groundwater conditions and backfilling to ensure subgrade bearing capacity,control road subsidence and effectively avoid pipeline cracking.Based on the three schemes of sparse piles,bite piles,and fully-paved piles and the test results of the test section,the parameters of the foundation bearing capacity,excavation effect,construction difficulty,and economy were selected to determine that the 10 cm bite pile is the most ideal for this project.The scheme provides a certain reference for the design and construction of similar projects in the area to a certain extent.
出处
《建筑技术开发》
2020年第7期151-152,共2页
Building Technology Development
关键词
不良路基
可液化粉砂层
咬合水泥搅拌桩
地下水位高
bad roadbed
liquefiable silt layer
bite cement mixing pile
high groundwater level
