钻孔灌柱在桥梁工程应用非常广泛,在钻孔灌柱施工过程中,影响成桩质量的因素是多方面的,其中对成桩质量影响较大且较难处理的要数混凝土灌桩过程中发生卡管事故,因为卡管事故不仅降低成桩承载力,易形成断桩使桩报废,而且很难卸管处理,给继续灌桩增加了很大难度。在施工过程中常采用如下方法处理卡管故障。①轻微卡管 Bored filling columns in the bridge project is widely used in the process of construction of bored filling columns, the factors that affect pile quality are many, of which the quality of the pile has a greater impact and more difficult to deal with the number of concrete filling process Card accident occurred in the accident because the card not only reduce the pile bearing capacity, easy to form a broken pile so that the pile scrapped, and difficult to unload handling, to continue to pile a lot more difficult. In the construction process often use the following method to deal with card failure. ① slight card tube