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本文结合实例对基坑支护及地下结构工程中格构基柱的施工进行了介绍,其施工方法的特点体现在:基坑支护结构的支撑柱与基础桩一起,在基坑土方开挖前施工,采用钻孔灌注桩的施工方法;在制作钻孔钢筋笼前,先制作好钢结构桁架,采用起重机吊装并焊接在钢筋笼上部,随着钢筋笼一同沉放到位;基坑逐层开挖后,逐道焊接支撑梁钢筋与铜格构,支撑柱成为基坑支护结构的一部分,并可成为地下室结构柱的骨架。
In this paper, the construction of foundation pillars in foundation pit support and underground structural engineering is described with examples. The construction method is characterized by that the supporting pillars of the foundation pit retaining structure are combined with the foundation piles, Before the construction, using the method of construction of cast-in-place bored pile; before making the reinforced steel cage, make the truss of steel truss, hoisting and welding by the crane on the upper part of the steel cage, sinking in place with the steel cage; After excavation, the steel beam and the copper lattice are welded one by one by way of welding, and the support column becomes a part of the foundation pit support structure and can become the skeleton of the basement structural column.