土钉支护技术在深基坑支护中的应用

Application of Soil-nailing Supporting Technique to Deep Foundation Pit

郑州市房地产展销中心深基坑采用土钉支护技术,在施工中遇到饱和可液化粉土层,出现支护结构和基坑边坡水平位移偏大现象,危及周围建筑物、市政道路和地下管线。文章针对上述问题和处理方法作了较深入的分析与探讨,同时对土钉支护的优点和局限性进行了阐述。

Soil-nailing supporting technique is adopted in the deep foundation pit construction of Zhengzhou Real Estate Exhibition Center. And at the saturated liquefiable silt soil layer, large displacements of the supporting structure and pit slope at the horizontal direction occur, which may endanger the surrounding buildings, roads and underground pipelines. This article makes relatively deep analysis and approach to the above-mentioned problems and the treatment methods and meanwhile, makes statement to the advantages and limitation of soil-nailing supporting.