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United States Patent | 4,701,075 |
Martyshenko , et al. | October 20, 1987 |
An offshore platform comprises a honeycomb foundation (A), a supporting structure (B) and an above-surface section (C), the foundation and the supporting structure being made of prefabricated reinforced concrete elements which are polyhedral hollow prisms (1, 2) set with gaps (6) between the external faces thereof. The prisms (1, 2) are joined by a system of prestressed vertical and horizontal diaphragm walls (4, 3) formed by pre-tensioning reinforcing bars (7, 8) placed in the gaps (6) between the faces of the prisms (1, 2) and casting-in-situ the gaps (6) later on.
Current U.S. Class: | 405/217 ; 405/204; 405/210 |
Current International Class: | E02B 17/02 (20060101); E02B 17/00 (20060101); E02D 021/00 (); E02D 025/00 (); E02D 027/38 () |
Field of Search: | 405/195,203-210,217,222,223,224,211,61 52/79.4,227,228,236.1 |
3472031 | October 1969 | Kelso |
3698198 | October 1972 | Phelps |
3913335 | October 1975 | Heier |
4037423 | July 1977 | Knutsen |
4422804 | December 1983 | Gerwick |
4448570 | May 1984 | Berthin |
4511288 | April 1985 | Wetmore |
2647330 | Aug., 1978 | DE | |||
2440442 | Jul., 1980 | FR | |||
1509503 | May., 1978 | GB | |||
"Order In Space", Keith Critchlow, C 1969, Appendix 2.. |