潜浮式倒悬索跨海大桥设计

Design of Submerged Floating Reverse Suspended Cable Sea-crossing Bridges

以琼州海峡过海通道建设为背景,在对国内外过海方案进行研究的基础上,构建一种新的设计方案——潜浮式倒悬索跨海大桥,其基础为普通桩基和承台,承台以上为倒悬索系统,主梁是位于水下数十米的水密舱,置于索承系统之上,形成倒悬索结构形式.行车道位于水密舱内.水密舱自重略小于浮力,通过倒悬索上的拉杆将水密舱拉到水下.探索了潜浮式倒悬索桥设计方案,讨论了方案的特点和技术难点.

The article constructs a new design scheme for submerged floating reverse suspended cable seacrossing bridges. The scheme is designed under the background of qiongzhou strait sea-crossing chan- nel construction and is based on the research of sea-crossing program at home and abroad. The bridge foundations are ordinarily pile foundation and pile cap. Above the pile cap is the reverse suspended cable system. The girder is a watertight cabin which is on the top of the cable system. All above form the reverse suspended cable structure. The driveway is in the watertight cabin. The gravity of the watertight cabin is slightly smaller than its buoyancy, and the watertight cabin should be pulled under the water by poles of the reverse suspended cables. The article also quests for the design scheme of the submerged floating reverse suspended cable bridges, and discusses its characters and technique difficulties.