黄河三角洲地区复合土钉墙深基坑支护技术

Shoring Technique of Deep Foundation Pit Using Compound Earth-nailed Wall at Yellow River Delta

黄河三角洲地区,其土质大部分为粉质粘土、淤泥质粘土、粉土、粉砂,属典型的软土场地。胜利油田综合办公写字楼工程成功应用了复合土钉墙深基坑支护技术。复合土钉墙基坑支护结构的优点是:造价低,基坑支护深,既可有效防渗,又可有效减轻开挖过程中的基坑变形,施工速度快。文章介绍了施工场地的地质情况、复合土钉墙基坑支护结构的设计参数和施工工艺,对施工过程中基坑变形和土钉锚固力等的监测结果进行了分析,并针对施工中遇到的问题提出了处理意见。

The shoring technique of deep foundation pit using compound earth-nailed wall was successfully applied to a colligated office building project. This paper introduces the geological condition of the construction field, the structural design parameters of the shoring and construction technique. It analyzes the monitoring data on deformations and anchoring forces of the foundation pit during construction. Also the proposals to solve the problems met in the course of construction is put forward.