| 摘要 |
<p>The bridge consists of a plurality of modules each of which comprises a longitudinal box-type girder 3, carrying a carriageway, supported by two or more pontoon units 4. These pontoon units comprise a pair of vertical hollow cylindrical bodies 6 joined below water level by a hollow box girder 7. The modules are individually anchored and support the main bridging girder on rigid legs 5 and are joined by mating components at either end of the bridging girder. A series of such modules is preferably joined in a horizontally undulating manner in order to provide, in the completed structure, a degree of horizontal flexibility so that it is capable of withstanding extremes of weather, waves and currents, and is able to span water channels of great depth. Modules are mated by a relatively unballasted module with a male end piece being lowered by increasing ballasting to join with a female end piece of an adjacent module. <IMAGE></p> |
