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桥梁钻孔灌注桩施工中遇到沙卵石地层时,容易发生塌孔现象,本文结合工程实例就钻孔灌注桩在砂卵石地层中造成塌孔原因进行分析,提出了有效防塌措施。
In the case of sand-gravel stratum encountered in the construction of bridge-bored cast-in-place pile, the phenomenon of collapse of the hole is prone to happen. In this paper, the cause of cave-in caused by cast-in-place bored pile in sand-gravel stratum is analyzed with engineering examples.