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 Title: |
US6219988:
Wrapping system for strengthening structural columns or walls
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Mahfouz, Ibrahim; Heliopolis, Egypt
Sarkani, Shahram; Potomac, MD
Rizk, Tarek; Cairo, Egypt
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| Assignee: |
The George Washington University, Washington, DC
other patents from GEORGE WASHINGTON UNIVERSITY (220985) (approx. 37)
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| Published / Filed: |
2001-04-24
/ 1999-03-18
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| Application Number: |
US1999000270836
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| IPC Code: |
Advanced:
E04C 3/34;
E04C 5/07;
E04G 23/02;
Core:
E04C 3/30;
more...
IPC-7:
E04C 3/34;
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| ECLA Code: |
E04C3/34; E04C5/07; E04G23/02C;
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| U.S. Class: |
Current:
052/834;
Original:
052/721.4;
052/723.1;
052/724.1;
052/736.3;
052/737.4;
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| Field of Search: |
052/514.5,515,516,249,720.1,721.4,723.1,724.1,736.3,737.4
156/071
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| Priority Number: |
| 1999-03-18 |
US1999000270836 |
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| Abstract: |
A method of reinforcing a substantially vertical support structure comprising the steps of: wrapping at least one sheet of resin impregnated high strength fiber around the support structure to form a multi-layer wrap, and then interposing a substantially stiff inner element between layers in the multi-layer wrap prior to completing the wrapping step, thereby sandwiching the substantially stiff inner element within the multi-layer wrap. The invention further includes a support structure comprising: a substantially vertical support, layers of resin impregnated high strength fiber tightly wrapped around a peripheral portion of the vertical support, and at least one stiff inner element interposed within the layers and substantially covering the vertical support.
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| Attorney, Agent or Firm: |
Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. ;
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| Primary / Asst. Examiners: |
Stephan, Beth A.;
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| Maintenance Status: |
E1 Expired Check current status
CC Certificate of Correction issued
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 8 claims |
We claim:
1. A wrapping system for improving strength and ductility of non-circular, reinforced masonry columns or beams, comprising:
- at least two layers of resin impregnated high strength fiber for being tightly wrapped around the periphery of the columns or beams; and
- a substantially rigid layer having high compressive strength in a transverse direction with respect to the axis of the columns or beams, the substantially rigid layer providing a plurality of first substantially rigid surfaces adapted to substantially abut a plurality of second surfaces around the columns or beams, the substantially rigid layer being interposed between the at least two layers and substantially enveloping a peripheral portion of the columns or beams when wrapped, so that the wrapping system provides axial and flexural stiffness along the wrapped portion of the columns or beams.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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