环梁支撑结构在泥炭土深基坑中的应用研究

环梁支撑结构在泥炭土深基坑中的应用研究 English Version

详细信息

(1. Wuhan Design & Research Institute of China Coal Technology & Engineering Group, Wuhan 430064, China; 2. Yunnan Province Real Estate Development and Management (Group) Company, Kunming 650021, China)

摘要: 以昆明市某超深基坑工程为例，分析探讨了大环梁内支撑结构在深厚泥炭质土层中应用的可行性及变形、应力变化规律。基坑支护结构位移及应力监测结果表明，环形内支撑结构能克服泥炭质土中锚杆锚固力差、易松弛变形等缺点，具有受力性能合理、方便施工且经济等优点，相对于与同类淤泥质软土基坑而言，其变形值相对偏大。本工程的成功经验可供类似基坑工程设计、施工参考。
- 深基坑 /
- 泥炭质土 /
- 大环梁内支撑结构 /
- 变形规律
Abstract: A deep excavation located in Kunming City is taken as an example. The feasibility, deformation and stress change laws of large circle beam supporting structure used in the deep peaty soils are analyzed. The displacement and stress monitoring results of excavation supporting structure show that the large circle beam supporting structure can overcome the low anchoring force of anchors and relaxation deformation and have reasonable force performance, convenient construction and economic advantages. Compared with that of excavation in deep mucky soft, the deformation of excavation in peaty soil is larger. It will provide a good reference for other similar projects.
- deep excavation /
- peaty soil /
- large circle beam supporting structure /
- deformation law

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