Bridge construction

Details Bridge construction Bridge construction

1997-05-27

1999-06-29

Grarsay, Tamara

Bridges

Transportable

14 25, 14 771, E01D 1512

Patent

active

059154233

ABSTRACT:
A method of constructing a modular bridge across a span (20) is disclosed. A vehicle (1) is positioned next to the span (20). The vehicle has a launching assembly (10) including an A-frame (40) which is moved from a stored position, in the launching assembly, to an upright, deployed position. A modular launching beam (110) is constructed by sequentially attaching modules (90,90') and then booming the launching beam as it is constructed out across the span (20). Once completed, the launching beam is pivoted about the A-frame (40) to lower the far bank end of the launching beam (110) onto the far bank. The A-frame (40) and, consequently, the home bank end of the launching. beam (110) are then raised, with the far bank end of the launching beam (110) remaining on the far bank. Once raised, a modular bridge (220) is suspended from the launching beam (110) and boomed out across the gap, additional modules being sequentially added. Once the bridge (220) has been completed, it is lowered into place, and the A-frame (40) is lowered once more. The launching beam (110) is raised from the far bank, and can then be retracted and dismantled. The launching beam is thus launched from a first, lower level where the load can be adequately reacted. Once deployed, however, there is no turning moment about the A-frame, which can thus be raised to a higher level to permit a bridge to be constructed beneath the launching beam (110).

REFERENCES:
patent: 3490605 (1970-01-01), Koss
patent: 4288881 (1981-09-01), Mahncke et al.
patent: 4299002 (1981-11-01), Wagner et al.
patent: 4521932 (1985-06-01), Parramore
patent: 4825492 (1989-05-01), Zehavi et al.
patent: 4920595 (1990-05-01), Fussinger et al.
patent: 4972538 (1990-11-01), Parramore
patent: 5103523 (1992-04-01), Drago et al.
patent: 5363527 (1994-11-01), Rainaud et al.
patent: 5732430 (1998-03-01), Beitz et al.

Affiliated with

Also associated with

Rating

Bridge construction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bridge construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bridge construction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1367311