海洋中大口径钻孔灌注桩施工工艺的探讨

The Exploration of Construction Technology of Large Diameter Drilled Grouting Pile in Sea

介绍了气举反循环法在海洋中大口径钻孔灌注桩施工的工艺流程、泥浆配比等 ,针对常规的气室下沉深度 ,尝试性地做了一些对比性试验 ,并提出一种确定气室位置的新方法 ,同时认为在超深超大的桩基础施工中 ,泥浆对钻具的浮力影响是不能忽略的 ,提出了一种行之有效简易确定钻压的方法。

This article presented the factors—technological process,arrange of slurry,and so on, which was used in large diameter drilled grouting pile in the east-sea bridge by the way of air-lift reverse technique. According to routine subside-depth of gas-room, it tried to make a lot of correlative experiment and proved a new way which could determine the position of the gas-room.Also it thought there might not ignore that slurry have some buoyant force with the drill-tool in the construction of large diameter and super depth bored grouting pile,and presented a useful way which could calculate simply the drill-pressure.