扩孔压浆桩以其结构性能好,承载力大,对周围地基挠动小,施工方便,造价低等特点被广泛采用,以下介绍扩孔压浆灌注桩冬施施工作法。１桩位冻层引孔冬季施工时可利用天然冻深层,采用干螺旋钻孔机引孔确定桩位,利用冻层深度、强度,可不必埋设护筒,简化了工艺,同时防止水钻施工中因 The boring grouted piles are widely used due to their good structural performance, large bearing capacity, small deflection of the surrounding foundation, convenient construction, and low cost. The following describes the working method of expanding grouting piles in winter. In the winter of construction, a freezing layer hole can be used in natural frozen deep layer, and the position of the pile can be determined by the hole of the dry spiral drilling machine. With the depth and strength of the frozen layer, it is not necessary to bury the protection barrel, simplifying the process, and at the same time preventing the construction of the drilling because