缺陷桩基处理是工程建设中常见的困难问题。文章以某大桥工程出现的桩基混凝土强度等级不满足设计要求为例,以工程规范和桩土参数经验取值为依据,提出缺陷桩基处治方案。并详细计算和分析了缺陷桩基处治前后的竖向和水平承载力对比,为该工程处治的设计和施工提供参考依据。 Defective pile foundation treatment is a common difficult problem in engineering construction. Taking the strength of pile foundations in a bridge project not satisfying the design requirements, the article puts forward the scheme of treating pile with defects based on the engineering norms and empirical values ​​of pile and soil parameters. The vertical and horizontal bearing capacity of the damaged pile foundation before and after treatment are calculated and analyzed in detail, which provides a reference for the design and construction of the project.