本文介绍了茅岭江特大桥钢壁双围堰的施工工艺。该工艺立足国内现有的施工技术、施工方法、机械设备和工程材料,进行施工技术的综合研究,全面优化。从钢壁双围堰的设计考虑承台的施工,施工中充分利用潮位涨落进行钢围堰的下水浮运,通过调节壁内水位高低控制钢围堰的下沉,便于上部钢围堰的拼接。最大的优点是减少了船舶的使用。在双壁钢围堰定位过程中,利用栈桥平台和钢围堰四周的4根钢管桩作为油葫芦受力点进行钢围堰精确定位,避免了使用锚索,确保了航道内船只的畅通。并且在施工中未搭设水中拼装平台,节约了成本,减少了征地,加快施工进度、节约工程成本的成功施工经验。 This article describes the construction process of the double wall steel cofferdam in Maolingjiang Bridge. The process based on the existing domestic construction technology, construction methods, machinery and equipment and engineering materials, comprehensive study of construction technology, fully optimized. From the design of steel double cofferdam, the construction of cap should be taken into consideration. During the construction, the tide bump should be fully utilized for the launching and floating of steel cofferdam, and the sinking of steel cofferdam should be controlled by adjusting the water level in the wall so as to facilitate the cofferdam Stitching. The biggest advantage is to reduce the use of the ship. In the process of positioning the double-walled steel cofferdam, four steel pipe piles surrounding the trestle platform and steel cofferdam are used as the stress points of the oil calabash to accurately locate the steel cofferdam, thereby avoiding the use of the anchor cable and ensuring the smooth flow of the vessels in the waterway . And in the construction did not set up the assembly platform in the water, saving costs, reducing land acquisition, speeding up the construction schedule, saving construction costs and successful construction experience.