CONSTRUCTION METHOD FOR PLANTING HOLLOW COLUMNS IN A SEABED OF A MARINE ENVIRONMENT FOR SUPPORTING WATERBORNE STRUCTURES THEREON

摘要

In a construction method for planting a hollow column (21) in a seabed (2) for supporting a waterborne structure (11) thereon, a steel tube (101) is driven into the bed (2) to the founding stratum (5), with materials of the bed (2) within tube (101) excavated and any surplus steel tube (101) cut off. A first segment (1A) is inserted into tube (101), then second/subsequent segments (2A-8A) are joined tightly to its previous segment (1A-7A) to form column (21). Pressure grouting fills gaps between the tube (101) and column (21). Upon hardening, the tube (101) and column (21) form an integral unit adapted to take loads due to a surface friction resistance present between the steel tube (101) outer surface and soil materials (4) of the seabed (2), and due to an end bearing resistance present between the base of column (21) and the founding stratum (5).