Demoltion of prestressed concrete bridges
Demoltion of prestressed concrete bridges
(OP)
I am looking for guideline "best practice" documentation for the demolition of post-tensioned concrete box-girder bridge spans in an urban motorway environment, including demolition over live traffic. Any assistance would be welcomed!





RE: Demoltion of prestressed concrete bridges
Alternatly, box gurders are hollow right? That solves the traffic problem. and they are made of 2 side beams and a top and a bottom beam. Think of the top and bottome beams as the flanges on an "I" beam and the side beams as the web protion of the "I" beam. The attack the beam as usual
William Roosa
CPT, SF
got my freedom
RE: Demoltion of prestressed concrete bridges
Paul Purmort
RE: Demoltion of prestressed concrete bridges
Hooah!
RE: Demoltion of prestressed concrete bridges
Before you cut the box beams, try to find the original design/manufacturing specs (if they're available) since you can assume steel reinforcing. Without steel, cutting the concrete beam is trivial, but with the steel you'll want to ensure you cut it (the steel) as well so you don't have large hanging or jambed portions of bridge to deal with (much more dangerous and time consuming).
David Larson
CPT, EN/EOD