Design and analysis of supports for deep foundation pit under an existing high-steep retaining wall
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摘要: 通过对高度为62 m的既有高陡肋板式锚杆挡墙墙脚开挖15 m的基坑支护设计作为实例,对超限高边坡的特殊性及其在支护设计中存在的问题进行了分析,在此基础之上采用建筑边坡工程技术规范（GB50330— 2002）、数值模拟、工程类比法相结合的方法对支护结构进行了优化设计和效果评价。监测结果表明,本工程支护设计经济有效地保护了既有高陡挡墙及其顶部大型公共建筑的安全,对其它类似工程具有较强的参考意义。Abstract: The design of supports for a deep foundation pit with an excavation depth of 15 m under an existing high-steep retaining wall 62 m in height is taken as an example. The specificity of ultra-high slopes and the existing problems in their design of supports are analyzed. Technical code for building slope engineering (GB50330), numerical simulation and engineering analogy method are combined for the design and effect evaluation of the supports. The monitoring results show that the design is effective to protect the high-steep retaining wall and large-scale public buildings. It may be a reference for other similar projects.
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Keywords:
- ultra-high slope /
- adjacent building (structure) /
- support design /
- effect evaluation
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