结合闽江大桥水中围堰施工实例,介绍受闽江径流与潮汐两方面的共同影响的江中高桩承台围堰施工技术,施工采用了一种套箱锁口围堰和钢板桩围堰相结合的新型组合围堰,实现了利用无底围堰施工高桩承台的突破。本文介绍了该组合型围堰实际施工情况、施工步骤、工艺流程及注意事项,为其它类似工程施工提供借鉴。 Combined with the construction example of Minjiang River Bridge cofferdam, the paper introduces the construction technology of crest and cofferdam of Jiangzhu high pile which is affected by the runoff and tide of Minjiang River. A cofferdams of cofferdams and cofferdam of sheet pile cofferdam Combined with a new combination of cofferdam to achieve the use of bottomless cofferdam construction of high pile cap breakthrough. This paper introduces the actual construction situation, construction steps, process flow and precautions of the combined type cofferdam, providing references for other similar projects.