八尺门跨海大桥φ2.8m大直径钻孔桩施工技术

Construction technology of cast-in-place piles with large-diameter in cross-sea bridge of Bachimen

以八尺门特大桥工程施工为例 ,对其钻孔桩施工方案进行了分析比较 ,介绍了钢护筒卷制、下沉 ,钢筋笼制造与安装及混凝土灌注施工技术 。

Taking construction work of cross sea bridge of Bachimen as example comparison analysis is conducted on the cast in place piles' construction schemes. The concrete cast in place piles' construction technology is introduced in terms of fabrication and installation of steel protective pipe and steel reinforcement cages. In the end some experiences are summarized.