Claims
- 1. A method for seismically reinforcing a reinforced concrete frame, comprising:
cutting a main reinforcement bar of a reinforced concrete member to shift a failure property of said reinforced concrete member from a shear failure preceding type to a bending failure preceding type.
- 2. The method according to claim 1, wherein said reinforced concrete member includes plural spaced main reinforcement bars, and cutting a main reinforcement bar comprises cutting a plurality of said plural spaced main reinforcement bars.
- 3. The method according to claim 2, wherein said plural spaced main reinforcement bars are circumferentially spaced within said reinforced concrete member, and cutting a plurality of said plural spaced main reinforcement bars comprises cutting main reinforcement bars that are spaced at regular circumferenfial intervals.
- 4. The method according to claim 3, wherein said plural spaced main reinforcement bars comprise twelve spaced main reinforcement bars, and cutting a plurality of said plural spaced main reinforcement bars comprises cutting main reinforcement bars that are spaced at ninety degree circumferential intervals.
- 5. The method according to claim 1, wherein the reinforced concrete frame comprises a bridge infrastructure including two reinforced concrete pillar members supporting a reinforced concrete beam member, and said reinforced concrete member comprises one of said two reinforced concrete pillar members.
- 6. The method according to claim 5, wherein said reinforced concrete member includes plural spaced main reinforcement bars, and cutting a main reinforcement bar comprises cutting a plurality of said plural spaced main reinforcement bars.
- 7. The method according to claim 6, wherein said plural spaced main reinforcement bars are circumferentially spaced within said reinforced concrete member, and cutting a plurality of said plural spaced main reinforcement bars comprises cutting main reinforcement bars that are spaced at regular circumferential intervals.
- 8. The method according to claim 7, wherein said plural spaced main reinforcement bars comprise twelve spaced main reinforcement bars, and cutting a plurality of said plural spaced main reinforcement bars comprises cutting main reinforcement bars that are spaced at ninety degree circumferential intervals.
- 9. A method for seismically reinforcing a reinforced concrete frame, comprising:
cutting a main reinforcement bar of a reinforced concrete pillar member, that forms part of a reinforced concrete rigid frame, to shift a failure property of said reinforced concrete pillar member from a shear failure preceding type to a bending failure preceding type; and attaching a damper-brace mechanism to the reinforced concrete frame such that said damper-brace mechanism is co-planar with said reinforced concrete rigid frame.
- 10. The method according to claim 9, wherein the reinforced concrete rigid frame comprises a bridge infrastructure including
(i) said reinforced concrete pillar member, (ii) another reinforced concrete pillar member, and (iii) a reinforced concrete beam member supported by said reinforced concrete pillar member and said another reinforced concrete pillar member, and wherein attaching the damper-brace mechanism to the reinforced concrete rigid frame such that said damper-brace mechanism is co-planar with said reinforced concrete rigid frame comprises attaching said damper-brace mechanism to said bridge infrastructure such that said damper-brace mechanism is positioned between said reinforced concrete pillar member and said another reinforced concrete pillar member and exists in a plane which is common to each of said reinforced concrete pillar member, said another reinforced concrete pillar member and said reinforced concrete beam member.
- 11. The method according to claim 10,
wherein said damper-brace mechanism includes an inverse V-shaped brace positioned between said reinforced concrete pillar member and said another reinforced concrete pillar member, and also includes a damper positioned between atop of said inverse V-shaped brace and said reinforced concrete beam member, and wherein attaching said damper-brace mechanism to said bridge infrastructure such that said damper-brace mechanism exists in a plane which is common to each of said reinforced concrete pillar member, said another reinforced concrete pillar member and said reinforced concrete beam member comprises attaching said damper-brace mechanism to said bridge infrastructure such that a plane which is common to each of said inverse V-shaped brace and said damper is also common to the plane which is common to each of said reinforced concrete pillar member, said another reinforced concrete pillar member and said reinforced concrete beam member.
- 12. The method according to claim 11, further comprising cutting a main reinforcement bar of said another reinforced concrete pillar member to shift a failure property of said another reinforced concrete pillar member from a shear failure preceding type to a bending failure preceding type.
- 13. The method according to claim 12, wherein said damper is constructed and arranged to yield prior to yielding of said reinforced concrete pillar member and said another reinforced concrete pillar member.
- 14. The method according to claim 12, wherein cutting the main reinforcement bar of the reinforced concrete pillar member and cutting said main reinforcement bar of said another reinforced concrete pillar member results in a decrease of the burden horizontal force of said bridge infrastructure, and wherein said damper-brace mechanism compensates for the decrease of the burden horizontal force of said bridge infrastructure.
- 15. The method according to claim 9, wherein said damper-brace mechanism includes a damper which is constructed and arranged to yield prior to yielding of said reinforced concrete pillar member.
- 16. The method according to claim 15, wherein cutting the main reinforcement bar of the reinforced concrete pillar member results in a decrease of the burden horizontal force of said reinforced concrete rigid frame, and wherein said damper-brace mechanism compensates for the decrease of the burden horizontal force of said reinforced concrete rigid frame.
- 17. The method according to claim 9, wherein cutting the main reinforcement bar of the reinforced concrete pillar member results in a decrease of the burden horizontal force of said reinforced concrete rigid frame, and wherein said damper-brace mechanism compensates for the decrease of the burden horizontal force of said reinforced concrete rigid frame.
Priority Claims (3)
Number |
Date |
Country |
Kind |
153740/1999 |
Jun 1999 |
JP |
|
197162/1999 |
Jul 1999 |
JP |
|
031700/2000 |
Feb 2000 |
JP |
|
Parent Case Info
[0001] This application is a divisional of U.S. application Ser. No. 09/584,143 filed May 31, 2000.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09584143 |
May 2000 |
US |
Child |
10140257 |
May 2002 |
US |