随着经济社会的发展,高层建筑、桥梁码头、重型仓储等工程经常采用深基础型式。钻孔灌注桩以其使用地层广、单桩承载力高,使其成为深基础中最受欢迎的一种型式。受工程地质与水文地质条件的影响,大多数钻孔灌注桩必须采用水下灌注混凝土的方法施工。文章结合工程实例,阐述水下混凝土桩基的技术要点,针对施工中常见的工程事故,提出预防及处理措施。方法切实可行,效果良好。 With the economic and social development, high-rise buildings, bridge piers, heavy storage and other projects often use deep-based models. Bored cast-in-place piles are widely used and have high bearing capacity of single piles, making them a most popular type of deep foundation. Due to the influence of engineering geology and hydrogeological conditions, most bored cast-in-place piles must be constructed using submerged concrete. The article combines the project examples, expounds the technical points of the underwater concrete pile foundation, and proposes prevention and treatment measures for the common engineering accidents in the construction. The method is practical and effective.