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大口径灌注桩已在桩基工程中得到广泛应用。但是大口径灌注桩的桩底沉渣 ,桩端及持力层存在相对软弱的夹层 ,桩身离析和断桩等问题又严重影响其承载力的发挥。注浆处理桩基质量事故可提高大直径灌注桩承载力 ,并确保其质量稳定可靠。1 桩端注浆补救事故桩的途径(1)改善持力层
Large diameter pile has been widely used in pile foundation engineering. However, the pile bottom sediment, the pile end and the holding layer of the large-diameter cast-in-situ piles have relatively weak intercalations, and problems such as pile segregation and broken pile have seriously affected their carrying capacity. Grouting pile foundation quality accidents can increase the bearing capacity of large diameter pile and ensure its quality is stable and reliable. 1 pile grouting ways to remedy the accident pile (1) to improve the holding layer