软土地区狭长沟槽基坑稳定性方法研究与案例分析  

Research on Stability Analysis Method and Case Analysis of Narrow Groove Foundation Pit in Soft Soil Area

作　　者：郭兵 廖辉 Guo Bing;Liao Hui(Yangzhou Survey and Design Institute Co.,Ltd.,Yangzhou,China;Zhenjiang Engineering Survey and Design Institute Co.,Ltd.,Zhenjiang,China)

机构地区：[1]扬州市勘测设计研究院有限公司,江苏扬州 [2]镇江市工程勘测设计研究院有限公司,江苏镇江

出　　处：《科学技术创新》2025年第8期114-117,共4页Scientific and Technological Innovation

摘　　要：为进一步优化狭窄沟槽基坑稳定性计算方法,提高设计质量。本文以实际工程为研究对象,对案例展开了计算分析,分析结果表明,由于考虑了对侧支护结构对支护结构稳定性的影响,考虑窄基坑效应的基坑抗倾覆稳定性计算方法得到的被动土压力较小,安全系数较大。此外,文中还分析了开挖宽度、嵌固深度等对该计算方法的影响,并采用该计算方法对案例中断面3设计内容进行优化,优化结果表明在保证安全的前提下本工程中断面3最大可节约2 m的支护结构嵌固深度。本文研究内容对与提高窄基坑支护结构设计质量具有一定现实意义。In order to further optimize the stability method of narrow groove foundation pit and improve the design quality.In this paper,the actual project is taken as the research object,and the case is calculated and analyzed.The analysis results show that due to the influence of the side support structure on the stability of the support structure,the passive earth pressure obtained by the calculation method of the anti-overturning stability of the foundation pit considering the narrow foundation pit effect is small,and the safety factor is large.The influence of excavation width and embedded depth on the calculation method is analyzed,and the calculation method is used to optimize the design content of section 3 in the case.The optimization results show that section 3 can save the embedded depth of supporting structure by 2 m under the premise of ensuring safety.The research content of this paper has certain practical significance for improving the design quality of narrow foundation pit support structure.

关 键 词：窄基坑 圆弧滑动法 土压力 嵌固深度 

分 类 号：TU473.1[建筑科学—结构工程]