Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1998-02-20
1999-12-21
Bagnell, David
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405226, 4051951, E02B 1702
Patent
active
060040750
ABSTRACT:
A mudmat in which the bearing plates of the mudmat are fabricated of a non-corrosive, man-made structural material such as plastic. The plates, formed of such a material, are lightweight, easily fabricated and generally less expensive than the prior art plates and their associated support structure. In one preferred embodiment, the plates are formed of extruded polyvinyl chloride (PVC) or a fiber reinforced composite such as thermoset resin reinforced with glass fibers (GRP). The individual plates are supported by standard frame members. The PVC or GRP plates are of such a size, shape and weight that they can easily be transported to, assembled and attached to the offshore jacket at the jacket fabrication site. Being formed of such materials, the plates are corrosion resistant, eliminating the need for cathodic protection. In addition, the PVC or GRP plates are much lighter in weight than the wood or metal plates of the prior art, such that they have much less impact on the buoyancy and weight of the jackets to which they are attached. In one preferred embodiment, the plates may be corrugated to enhance resistance to horizontal and vertical displacement forces placed on the offshore jacket.
REFERENCES:
patent: 2995900 (1961-08-01), Hunsucker
patent: 3064437 (1962-11-01), Knapp
patent: 4307977 (1981-12-01), Haney
patent: 4720214 (1988-01-01), Brasted et al.
patent: 4863315 (1989-09-01), Wickberg
patent: 5333971 (1994-08-01), Lewis
Bagnell David
Lagman Frederick L.
Stuck In The Mud, L.P.
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