US3602000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced steel pipe piling structure
Assignee: Individual
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Filing: 1969-09-19
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Granted: 1971-08-31
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Expires: 1989-09-19
Abstract
Abstract Reinforcement for steel pipe piles and piling structure such as that supporting an offshore oil platform, which has deteriorated and lost its strength. The pile is reinforced in situ by cutting an access opening into its interior, or cutting such an access opening through the pile to communicate with the interior of a steel bracing pipe in the structure, and introducing a partially prestressed and partially reinforced concrete column inside the steel shell.
Inventors
- 👤 Homayoun Joe Meheen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:11
CPC Classifications
E; E02; E02D; E02D37/00; E02D5/00; E02D5/22; E02D5/24; E02D5/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
240 words
A reinforced in situ pile structure formed by strengthening a weakened hollow pile and connected bracing, comprising a substantially vertical outer steel shell, a plurality of flexible steel tendons secured to upper and lower bearing plates and disposed within said shell, an access opening cut in the wall of said shell near the top thereof for lowering said tendons into the shell and for pouring concrete thereinto, each of said bearing plates having an opening therethrough for passage of concrete, abutment means fixed to the inner surface of said shell below and near said access opening and serving to support said upper bearing plate, means for securing said lower bearing plate to the inner wall surface of the shell near its bottom, spaced apertures in said bearing plates through which the tendons pass holding the tendons longitudinally in symmetrical array closely adjacent the periphery of said shell, adjustable means gripping said tendons at the level of said upper bearing plate and accessible through said access opening for adjustment of forces in said tendons to draw the upper and lower bearing plates toward one another against the resistance of said aButment means and said means for securing said lower bearing plate, and concrete substantially filling the interior of the shell to the level of the access opening and hardened about said tendons at least some of which are at least partially stressed to exert an axial compressive force on said concrete.
Claim 2
Dependent Claim
240 words
A reinforced in situ pile structure formed by strengthening a weakened hollow pile and connected bracing, comprising a substantially vertical outer steel shell, a plurality of flexible steel tendons secured to upper and lower bearing plates and disposed within said shell, an access opening cut in the wall of said shell near the top thereof for lowering said tendons into the shell and for pouring concrete thereinto, each of said bearing plates having an opening therethrough for passage of concrete, abutment means fixed to the inner surface of said shell below and near said access opening and serving to support said upper bearing plate, means for securing said lower bearing plate to the inner wall surface of the shell near its bottom, spaced apertures in said bearing plates through which the tendons pass holding the tendons longitudinally in symmetrical array closely adjacent the periphery of said shell, adjustable means gripping said tendons at the level of said upper bearing plate and accessible through said access opening for adjustment of forces in said tendons to draw the upper and lower bearing plates toward one another against the resistance of said aButment means and said means for securing said lower bearing plate, and concrete substantially filling the interior of the shell to the level of the access opening and hardened about said tendons at least some of which are at least partially stressed to exert an axial compressive force on said concrete.
Claim 3
Dependent Claim
23 words
A reinforced in situ pile structure according to claim 1, wherein said opening is closed by a cover plate secured to said shell.
Claim 4
Dependent Claim
28 words
A reinforced in situ pile structure in accordance with claim 1, wherein said tendons are each in a flexible tube and concrete fills the interiors of said tubes.
Claim 5
Dependent Claim
29 words
A reinforced in situ pile structure in accordance with claim 1, wherein said bearing plates are annular and said opening of each said bearing plates is disposed centrally thereof.
Claim 6
Dependent Claim
157 words
A reinforced in situ pile structure according to claim 1, wherein a pair of said substantially vertical steel shells are connected to a brace extending at an angle therebetween, said brace being a third steel shell, a second set of flexible steel tendons extending within and longitudinally of the brace and secured near their ends to annular bearing plates, a second and third access opening being cut in the walls of said pair of shells leading to the interior of the brace for lowering said second set of tendons into the brace and pouring concrete thereinto, said annular bearing plates being secured to said pair of shells across said second and third access openings, adjustable tensioning means gripping the tendons of said second set at said annular bearing plates, and concrete substantially filling the interior of said brace and hardened about said tendons of the second set at least some of which are at least partially stressed.
Claim 7
Dependent Claim
39 words
A reinforced in situ pile structure according to claim 5, wherein the end portions of said tendons extend beyond said annular bearing plates into said pair of shells and are embedded in concrete within the pair of vertical shells.
Claim 8
Dependent Claim
25 words
A reinforced in situ pile structure according to claim 5, wherein said second set of tendons is secured to a spiral cage of reinforcing wire.
Claim 9
Dependent Claim
35 words
A reinforced in situ pile structure according to claim 5, wherein a plurality of high strength rigid rods are secured to each of said annular bearing plates and extend into said pair of vertical shells.
Claim 10
Dependent Claim
114 words
A reinforced in situ pile structure according to claim 8, wherein said brace is diagonal to the pair of vertical shells and said pile structure includes a horizontal brace connecting the pair of substantially vertical shells, said horizontal brace being a fourth steel shell, a fourth access opening cut in the wall of one of said pair of substantially vertical shells and communicating with the interior of said horizontal brace, a plurality of high strength steel rods held in spaced circular arrangement within said horizontal brace near one end and extending through said fourth access opening into the adjacent vertical shell, and concrete surrounding said last-named rods in said horizontal brace and vertical shell.
Claim 11
Dependent Claim
167 words
A reinforced in situ pile structure formed by strengthening a weakened hollow pile and connected bracing, comprising a pair of substantially vertical steel shells spaced from one another and connected by a brace extending at an angle therebetween, said brace being a third steel shell, a first access opening cut in the wall of one of said pair of shells near the top thereof, a set of flexible steel tendons secured near their ends to annular bearing plates and extending within and longitudinally of the brace, second and third access openings being cut in the walls of said pair of shells leading to the interior of the brace, said annular bearing plates being connected to said pair of vertical shells respectively across said second and third access openings, adjustable tensioning means gripping the tendons of said set at said annular bearing plates, and concrete substantially filling the interior of said brace and hardened about said tendons at least some of which havE been at least partially stressed.
Claim 12
Dependent Claim
167 words
A reinforced in situ pile structure formed by strengthening a weakened hollow pile and connected bracing, comprising a pair of substantially vertical steel shells spaced from one another and connected by a brace extending at an angle therebetween, said brace being a third steel shell, a first access opening cut in the wall of one of said pair of shells near the top thereof, a set of flexible steel tendons secured near their ends to annular bearing plates and extending within and longitudinally of the brace, second and third access openings being cut in the walls of said pair of shells leading to the interior of the brace, said annular bearing plates being connected to said pair of vertical shells respectively across said second and third access openings, adjustable tensioning means gripping the tendons of said set at said annular bearing plates, and concrete substantially filling the interior of said brace and hardened about said tendons at least some of which havE been at least partially stressed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |