钻孔灌注桩的施工方法和质量控制

Methods and Quality Control of Bored Pile Construction

灌注桩是建筑物常用的基桩形式之一，它将上部结构的荷载传递到深层稳定的土层或岩层上去，减少基础和建筑物的不均匀沉降。钻孔灌注桩由于是在地下，水下完成，质量控制难度大，复杂的地质条件或施工中的失误都有可能产生，塌孔、缩孔、桩孔偏斜、沉渣过厚等问题。本文主要介绍了钻孔灌注桩的施工方法和质量控制。

The bored pile is a common foundation type, which transfers the loads to the deep layer of soil or rock in order to mitigate the uneven sink of structures. Because the bored pile located under ground, and implemented below the groundwater table, it was difficult for quality control. Failures or troubles, such as cave in, dwindle, decline, aggradation and etc may occur due to complicated geological and constructional conditions. The technical and quality control methods of the bored pile construction were expounded in the paper.