在桩基施工过程中常常会出现预制桩在打入时由于锤击应力过大,桩被打坏,而当锤击能量过小时桩又打不下去,以及桩位偏移等问题;在施工钻孔桩时则常出现导管堵塞,二次灌注形成施工缝,导管埋深不够,形成松散夹层,以及钢筋笼位移等问题。这些都可能造成桩竣工后的隐患,产生承载力不够,桩结构的完整性被破坏等后果。一、桩基工程竣工后,对桩结构完整性普查的必要性施工完后桩承载力不足的原因除设计错 In the construction process of the pile foundation, it often happens that the prefabricated pile is damaged due to excessive hammering stress, piles are damaged, and when the hammering energy is too low, the piles cannot be driven down and the pile position is offset; When the bored piles are used, the conduits are often blocked, the secondary infusion forms the construction joints, the depth of the conduits is not enough, the loose interlayers are formed, and the steel cages are displaced. All these may cause hidden dangers after the pile is completed, resulting in insufficient bearing capacity and the integrity of the pile structure being destroyed. First, the completion of the pile foundation project, the necessity of the survey of the integrity of the pile structure after the completion of the pile bearing capacity reasons in addition to the design error