Research on Treatment of Common Problems in Borehole Formation Quality of Cast-in Place Piles under Complex Geological Conditions
复杂地质条件下灌注桩成孔质量常见问题处理研究

摘要

灌注桩凭借承载力高、适应性强的优势广泛应用于建筑与桥梁基础工程，在岩溶、软土、砂卵石等复 杂地质环境施工时，成孔阶段易出现塌孔、缩径、孔斜、沉渣超标、漏浆等病害，直接影响桩基承载力与结 构安全。本文梳理复杂地质条件下灌注桩成孔主要质量缺陷，提出针对性预防与分级处置措施，构建全过程 质量管控要点，可为复杂场地桩基施工质量管控提供实践参考。

Abstract

 Cast-in-place piles are widely used in building and bridge foundation engineering due to their advantages of high bearing capacity and strong adaptability. During construction in complex geological environments such as karst, soft soil, and sand-gravel strata, quality defects such as borehole collapse, diameter reduction, borehole deviation, excessive sediment thickness, and slurry leakage are prone to occur during the borehole formation stage, directly affecting pile foundation bearing capacity and structural safety. This paper reviews the main quality defects in borehole formation of cast-in-place piles under complex geological conditions, proposes targeted prevention and graded treatment measures, and constructs key points for whole-process quality control. The study can provide practical reference for quality control of pile foundation construction in complex sites.