Hollow prestressed concrete (HPC) girder and spliced hollow...

Bridges – Girder

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C052S223110

Reexamination Certificate

active

07827642

ABSTRACT:
Provided is a hollow prestressed concrete girder for forming an I-type prestressed concrete girder bridge, in which at least one hole is formed in a body portion of the I-type prestressed concrete girder. A spliced hollow prestressed concrete girder bridge, in which a plurality of holes are formed in a body portion of the girder to reduce the weight of the girder, is constructed by carrying a plurality of spliced girders manufactured in a factory to a construction site, assembling the spliced girders in the construction site, first tensing steel wires installed at the entire girder, reinforcing a connection portion between spliced members by a steel rod or steel wire which is connected by welding or using a coupling or anchoring device at the spliced portion that connecting the spliced girders, installing the assembled girders that are first tensed on a pier, installing a continuous steel wire for connecting the installed spliced girders for a continuous bridge, pouring slab in the upper portion of the installed spliced girders, after the slab is cured, second tensing steel wires that have not tensed or the tensed continuous steel wire, and when cracks are generated or excessive sagging occurs after the bridge is constructed, additionally tensing the steel wires.

REFERENCES:
patent: 2883728 (1959-04-01), Sederlund
patent: 3349527 (1967-10-01), Bruns
patent: 3944242 (1976-03-01), Eubank
patent: 3977646 (1976-08-01), Moon et al.
patent: 3983830 (1976-10-01), Morgan
patent: 5299445 (1994-04-01), Yee
patent: 5577284 (1996-11-01), Muller
patent: 5671573 (1997-09-01), Tadros et al.
patent: 5839539 (1998-11-01), Smith
patent: 6036906 (2000-03-01), Tadros et al.
patent: 6101781 (2000-08-01), Balzer
patent: 6345403 (2002-02-01), Nagle
patent: 6751821 (2004-06-01), Han
patent: 7010890 (2006-03-01), DeSutter
patent: 7104017 (2006-09-01), Kadotani et al.
patent: 2005/0144890 (2005-07-01), Kim et al.
patent: 2006/0137115 (2006-06-01), Park
patent: 2006/0272267 (2006-12-01), Mentado-Duran
patent: 2007/0056123 (2007-03-01), Moon
patent: 05-009910 (1993-01-01), None
patent: 09-025611 (1997-01-01), None
patent: 09-071907 (1997-03-01), None
patent: 2002-371516 (2002-12-01), None
patent: EP 1548190 (2005-05-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hollow prestressed concrete (HPC) girder and spliced hollow... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hollow prestressed concrete (HPC) girder and spliced hollow..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hollow prestressed concrete (HPC) girder and spliced hollow... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4221894

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.