基坑支护方案设计及稳定性评价
Design of Foundation Pit Support Scheme and Stability Evaluation
熊东远 1于东洋2
作者信息
- 1. 广西昇龙工程勘察设计检测有限公司,广西 河池 547000
- 2. 桂林海林工程勘察有限公司,广西 桂林 541004
- 折叠
摘要
为确保基坑施工安全,文中结合基坑所处地质、环境条件,先进行基坑支护方案总体设计和防治措施计算,再以变形监测成果为基础,通过变形预测评价施工过程中的稳定性.结果表明,支护措施1 适用于支护区1,采用"单排支护桩+三层锚杆";支护措施2适用于支护区2,采用"单排支护桩+两层锚杆".同时,通过变形预测,得到的监测点的后续变形速率均逐步趋于减小,即累计变形趋于稳定,加之累计变形范围为19.81～22.77 mm,均在变形控制值范围内,因此,说明基坑施工过程中的稳定性较好.
Abstract
In order to ensure the safety of foundation pit construction,combined with the geological and environmental conditions of the founda-tion pit,the paper first carries out the overall design of foundation pit support scheme and the calculation of prevention and control measures,and then evaluates the stability of the construction process by deformation prediction based on the deformation monitoring results.The analysis results show that:the supporting measure1 is suitable for supporting zone 1,using"single row supporting pile + three-layer anchor rod";Support measure 2 applies to support area 2,using"single row support pile + two-layer anchor bolt".At the same time,through deformation prediction,it is found that the subsequent deformation rate of the monitoring points gradually tends to decrease,that is,the cumulative deform-ation tends to be stable,and the cumulative deformation range is19.81～22.77mm,which is also within the deformation control value range.Therefore,the stability of the foundation pit construction process is very good.
关键词
基坑/支护方案/变形预测/稳定性Key words
Foundation pit/Support scheme/Deformation prediction/Stability引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据