公开(公告)号：US4124989A

公开(公告)日：1978-11-14

申请号：US692733

申请日：1976-06-04

Applicant: Donald M. Watson ,  Vladimir Nastasic

Inventor： Donald M. Watson ,  Vladimir Nastasic

IPC: E02B17/02 ,  E02D23/08 ,  E02D27/52

CPC classification number: E02B17/02 ,  B63B21/50 ,  E02D23/08 ,  E02D27/52 ,  E02D2250/0053

Abstract: A shear key unit for attachment rigidly to the base of a foundation raft for a maritime structure comprises an open ended thin walled cylinder, which when its open end is facing downwardly beneath the raft, acts as a fluid tight chamber of variable volume - the volume being diminished as the cylinder penetrates the seabed strata. The foundation raft can be lowered by controllably allowing sea water to escape from the chamber. A slidable closure may be provided at the distal end of the cylinder to isolate the interior of the cylinder from the seabed. It is a feature of the invention that the cylinder assembly can be installed through an opening extending downwardly through the foundation raft, and can thereafter be fixed in a position projecting beneath the base of the raft. A method of installing and attaching the shear key upon the slab is disclosed, and involves lowering the cylinder assembly through openings in the slab after the raft has been floated out, then fixing the cylinder assemblies in positions within the openings with the cylinders projecting beneath the slabs.

Abstract translation: 用于海上结构的基础筏的底部的剪切键单元包括开口的薄壁圆筒，当其开口端朝向木筏下方时，其作为可变体积的流体密封室 - 体积 随着气瓶穿透海底地层而减少。 可以通过可控制地使海水从室中逸出而降低基础筏。 可以在气缸的远端设置可滑动的闭合件，以将气缸的内部与海底隔离开来。 本发明的一个特征是，气缸组件可以通过向下延伸穿过基础筏的开口来安装，然后可以将其固定在放在筏底部下方的位置。 公开了一种在板坯上安装和附接剪切键的方法，并且涉及在筏被浮出之后通过板坯中的开口降低气缸组件，然后将气缸组件固定在开口内的位置，其中气缸突出在 平板