桩锚-土钉墙支护基坑变形特性分析——以昆明某基坑支护工程为例

• 作 者: 王国洪 刘华宁
• 机 构: 江苏兴水建设工程有限公司,江苏省水利建设工程有限公司,
• 出 处: 河北工业科技
• 发表日期: 2015年06期
• 关键词: 岩土力学 土钉墙 桩锚 变形 沉降 基坑监测

在昆明某基坑支护工程中采用桩锚-土钉墙联合支护体系的基坑支护方案,并对基坑开挖过程中周边土体水平位移、沉降及周边建筑物处土体沉降进行了监测分析。结果表明,基坑开挖过程中周边土体最大水平位移接近15mm,最大沉降接近22mm,周边建筑物处土体最大沉降接近20mm,均小于变形预警值,达到基坑支护要求。

In the excavation of a foundation pit in Kunming, the foundation pit support scheme of pile-anchor-soil nailing wall combined support system is adopted and the horizontal displacement and settlement of surrounding soil and the settlement of soil at the surrounding buildings during excavation of foundation pit Conducted a monitoring analysis. The results show that the maximum horizontal displacement of surrounding soil is nearly 15mm and the maximum settlement is close to 22mm. The maximum settlement of soil near the buildings is nearly 20mm, which is less than the deformation early warning value and meets the requirements of foundation pit support.