浅析沌口长江公路大桥钢围堰气囊法下水技术的运用

Analysis on the Application of Air Bag Launching Technology in Steel Cofferdam of Zhuankou Yangtze River Highway Bridge

气囊法下水是指将船舶或其他重物承托在特制的船用气囊上,从陆地移入水域的下水方法。同传统滑道式下水、轨道式下水、船坞下水等下水方式相比,气囊下水具有对下水坡道要求低、对下水水位宽容度大及经济便利的优点,同时,其也存在缺乏完善的理论支持体系、实际操作不规范等问题。论文结合武汉市沌口长江公路大桥主墩钢围堰工程,简要介绍气囊下水技术在该工程中将钢围堰从陆域拼装场安全移入水中的运用。

Air bag launching method is using the marine airbag support the ships and other heavy things, and transfer them from land to water area. Compared with the traditional chute-type launching, orbital launching, docking water and others, the airbag launching has the advantages of low demand for water down ramp, wide tolerance of water level and economic convenience, and there is a lack of perfect theory support system, the actual operation is not standardized and so on. In this paper, combined with the Wuhan city Zhuankou Yangtze river highway bridge main pier steel cofferdam project, a brief introduction to the application of air bag launching technology in this project transferring the steel cofferdam from the land installation field safe into the water use.