针对具体工程中出现明显损伤的管桩,采用有限元方法,分别计算了不同灌芯深度补强后管桩的抗水平和抗压承载力,结果表明:2 m以上灌芯长度能保证桩基承载能力不会降低。进一步采用现场试验对2 m灌芯补强后缺陷桩分别进行抗水平及抗压承载力测试,通过与完整桩的结果比较表明:灌芯补强后的桩基极限承载力与完整桩基本一致。 According to the concrete pile with evident damage in concrete engineering, the finite element method is used to calculate the anti-horizontal and compressive bearing capacity of pipe pile with different depth of core filling. The results show that the length Carrying capacity will not be reduced. The field test is also used to test the anti-horizontal and compressive bearing capacity of the 2 m post-reinforced defective piles respectively. Comparing the results with those of the intact piles, it is found that the ultimate bearing capacity of post-reinforced piles is basically the same as that of the intact piles .