Precast anchor block for subsea pipe - is in two pieces joining on vertical or horizontal pipe dia meter and joined by elastic hinge and bolts

摘要

The segmental prefabricated foundation blocks, used with submarine pipe lines, are placed on the sea bed from a barge, and serve to transmit pipe loads to the bed whilst providing anchorage and ballast. Each block comprises two complementary precast concrete segments with an elastic or a rigid coupling which permits relative movement. Two reciprocal segments (1, 2) join (8, 9, 10) on the vertical pipe dia. to form a stub column with a pointed head and a circular window (5) for the pipe. An elastic coupling (16) of I or dumbell-section may be provided at a third point, and allows a pincer action by which the segments are parted for pipe insertion. A tie bolt (13) may be inserted at a higher level. An alternative form uses segments which join on a horizontal pipe dia.