摘要
在总结岩石地区基坑工程典型支护方式的基础上,介绍了青岛地区土岩组合的一个典型超深基坑工程案例。鉴于特殊的地层,本工程采用吊脚桩+锚索支护体系,局部放坡结合钢管桩预支护。通过有限元数值分析结果与现场实测数据对比表明:在上覆土层较薄的岩石地区,围护结构的变形主要集中在土层部分。采用上述支护体系可以有效控制基坑及周围环境变形,同时大幅降低工程造价。
The paper introduces an example of very deep pit in rock combined with soil layers by summarizing typi-cal pits in Qingdao.Based on special geological conditions,during the excavation construction process,many comprehen-sive techniques were applied,such as end-suspended piles,anchors,slope,steel pipe pile and so on. The calculated re-sults were compared with the field measured values.The results show that the mainly deformation of supporting construc-tion appear in soil part.The supporting methed we talked above could control the displacement of excavation and builid-ings surrounded,reduce the construction cost. These datas were useful for the engineering.
出处
《城市勘测》
2016年第5期171-176,共6页
Urban Geotechnical Investigation & Surveying
关键词
土岩组合地层
吊脚桩
变形
PLAXIS
有限元
rock combined with soil layers
end-suspended piles
displacement
PLAXIS
FEM
