| 摘要 |
A method of constructing a fixed offshore platform is disclosed using a template to locate the piling locations, the template having openings for the pilings. The pilings are then driven in so that the top of each piling is above the template and about five feet above the mudline. An acoustic transponder is then used to more precisely locate each of the tops of the pilings so that the jacket to be installed thereon will be level. The jacket is installed on the pilings using a stabbing connection. The compression loads are preferably established on metal-to-metal contact bearing surfaces. The tension loads are carried by conventional grouting between the jacket legs and the piling or via a mechanical latching mechanism, which may be either external or internal. If skirt pilings are to be employed in addition to the "main" pilings, a template insert can be used with each main piling opening or sleeve in the template, if desired. The pilings for a large platform wherein its pilings are spread out over a large area can be located by using a template which is a fraction of the whole. In such case, some of the pilings are initially located and then the template is repositioned to locate additional pilings. The template is then repeatedly moved until all of the pilings are fully located. |
