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桥梁钻孔灌注桩由于其施工工艺较复杂、技术要求较高、环节较多并且其水下混凝土隐蔽工程的灌注须在很短的时间内快速完成。这导致桩基工程容易受到一些质量问题,甚至是病桩、断桩等质量事故的危害。本文结合多年来现场施工经验,对钻孔灌注桩施工过程质量事故原因进行论述和分析,提出一些技术和方法来控制桩身质量并预防可能出现的病害。
Because of its complicated construction technology, high requirement of technology and more links, the cast-in-place bored piles of bridges should be quickly completed in a short period of time. This causes the pile foundation project to be susceptible to some quality problems, even the quality accident such as sick pile, broken pile and so on. Based on many years of on-site construction experience, this article discusses and analyzes the causes of quality accidents during the construction of cast-in-place bored pile, and puts forward some techniques and methods to control the quality of pile body and prevent the possible diseases.