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该项专利是对于混凝土内管灌注桩钢套管的结构形式进行改进,以增大灌注压力,提高其通过软弱土层成桩的能力。这套灌注桩成桩设备(见上图所示),由预制混凝土桩头4,钢套管1,混凝土浇灌斗3和桩锤组成。钢套管的
The patent is to improve the structural form of the steel casing of the pipe cast-in-place pile in concrete to increase the perfusion pressure and improve its ability to form piles through soft soil. This set of cast-in-place pile forming equipment (shown in the figure above) consists of precast concrete pile head 4, steel casing 1, concrete pouring bucket 3 and pile hammer. Steel casing