软土地区静压振拔沉管灌注桩中常见缺陷桩的分析及预防

ANALYSIS AND PREVENTION OF COMMON PILE DEFECTS OF STATIC COMPRESSIVE VIBRO PULLING-SINKING CAST-IN-PLACE PILE IN SOFT SOIL AREA

静压振拔沉管灌注桩，由于施工时管理不善或地质条件相对复杂时，常会使桩体造成缺陷，这些缺陷桩的存在，将对桩基工程质量带来严重的影响。现根据多年测桩及参与桩体施工的经验，对这些缺陷桩的形成、危害性及预防提出看法。

Owing to the unfitted management in the construction or rather complex geological conditions, it often causes defects in the bodies of the static compressive vibro pulling-sinking cast-in-place piles. The existence of these defects will bring severe influence to the qualities of pile foundation projects. Based on many years' experiences of pile testings and participations of pile foundation construction, the author gives views on the formation. harmness and preventive measures of these defects.