现场钻孔桩浇筑水下混凝土的质量问题及防治

在铁路、市政和公路桥梁中，钻孔桩是应用最为广泛的基础类型，而现场灌筑钻孔桩水下混凝土时的质量控制又是保障整个钻孔桩基础质量的关键环节。此文详细地总结和论述了钻孔桩现场灌筑水下混凝土时经常出现的各类质量问题，深入浅出地阐述了这些质量问题形成的原因、造成的危害、预防措施以及有效的治理办法。

Quality problem of underwater concreting of cast-in-place bored piles and preventive treatment thereof

In the bridges of railway,highway and municipal works,bored piles are of the most extensively used type of foundations,whereas the quality control of underwater concreting of cast-in-place bored piles is the crucial link to ensure the quality of the whole pile foundation.This article sums up and expounds in detail the problems of various sorts frequently rising in the course of underwater concreting for cast-in-place bored piles and explain in simple terms the reasons for and harms caused by the quality problems,and prevention measures and effective rectification methods thereagainst.