双排桩支护运用于淤泥质软土基坑的实践研究

Practice Research on Application of Double-row Piles Used in Foundation Pit Retaining in Silt Soft Soil

摘要:

昆明地区地下土层多为古滇池沉积而成，地下多存在较厚的淤泥质土。该地区常用的基坑支护形式为桩锚结构，在昆明二环东路的昙华山水园项目，创新性地在该地区使用了双排桩支护结构，取得了良好效果。结合该工程分析了双排桩的支护特点、计算模型及施工效果，总结了施工技术经验，并提出了淤泥质软土地层采用双排桩进行支护的改进建议。

Abstract:

The soil layer in Kunming is mostly formed by the deposition of ancient Dianchi, thick silt soil exists in the underground. The pile anchor structure is commonly used for foundation pit retaining in this area. The innovative application of double-row piles retaining was carried out in a project with good effects. According to this project construction, the paper analyzes the retaining characteristics, calculation model and construction effect, summarizes the technical experience and puts forward the improvement suggestions to double-row piles retaining in silt soft soil layer.