桥梁钻孔灌注桩施工技术和质量控制

Bridge Bored Pile Construction Technology and Quality Control

公路桥梁领域广泛地应用钻孔灌注桩基础,因为此种基础具有成本低、适应性强、施工简便等优点。因为桥梁钻孔灌注桩的施工大部分是在水下进行的,所以灌注桩属于隐蔽工程,成形后不能进行开挖验收,施工过程中也无法观察。整个工程的质量和进度都会因为在施工中某个环节出现问题时而受到直接影响,严重的会造成不良的社会影响,给投资者带来巨大的经济损失。因此,要求基础施工队伍加强施工质量管理,落实施工技术措施,施工过程中每一个环节的质量要注意抓好,并且针对灌注桩的质量通病进行分析后,为便于有效地控制桩基施工质量,提前制订出施工质量标准、验收实施方案和每根桩的施工记录。

As bored pile foundation have the advantages such as low cost, strong adaptability, and easy construction etc., it is widely used in highway and bridge field. Because most of its construction is underwater, the construction of bored pile is concealed work, it can not be excavated and checked after forming, and it can not be inspected in construction. If the problem appeared in any of links, the quality and schedule of the whole project would be effected, even causes bad social influence, which brings large economic lost to investor. So we require worker to strengthen construction quality management, implement the construction technique measures, and control construction quality at each link. After analyzing the common failings of bored piles, the construction quality standards, acceptance implementation plan and construction record of every root pile should be pre-decided for easy to effectively control the quality of pile foundation construction.