先张法预应力离心高强度混凝土管桩是具有国际先进水平的高新技术产品 ,原先接桩采用手工焊 ,质量不够稳定 ,且无法现场检测 ,存在隐患。为提高接头质量可靠性 ,本项目经过研制开发 ,充分考虑管桩接头的结构特殊性和现场施工的可行性 ,采用埋弧自动焊工艺拼接 ,运用超声波纵波直探 ,辅以测厚的方法进行检测 ,解决了工艺难题 ,使接头质量可靠性得到保证 Pre-tensioned prestressed centrifugal high-strength concrete pipe pile is an international advanced level of high-tech products, the original pile by hand welding, the quality is not stable enough, and can not be detected on site, there are hidden dangers. In order to improve the quality and reliability of the joint, the project has been developed and developed. Taking full account of the structural peculiarity of the pipe-pile joint and the feasibility of on-site construction, submerged arc welding is used to splicing. Detect, solve the process problems, so that the quality and reliability of joints are guaranteed