地铁区间中间风井超深钻孔灌注桩高效施工工艺

Efficient Construction Techniques of Super Deep Bored Piles of Subway Interval Intermediate Air Shaft

本文以南京地铁三号线南京站站～新庄站区间中间风井工程为背景,针对工期紧张的中间风井钻孔灌注桩施工的工艺进行介绍。通过对其中的钢筋笼分体吊装、长丝连接等重点提高施工效率的工艺作重点分析,研究如何提高施工效率,对此类钻孔桩深度深,工期紧这样工程施工具有一定的参考价值。

Taking the wind wells engineering between Nanjing railway station and Xin Zhuang railway station in. Nanjing metro line No.3 as background, this paper makes introduction about the construction technology and the process of the wind wells bored piles, which has a nervous period. This paper mainly analyzed the process of improving efficient construction, such as its reinforcing cage fission installation, filament connection and so on, and studied ways of promoting construction efficiency, which has the reference value to such project with deep bored piles and tight time schedule.