demolition and removing existing bridge girders
demolition and removing existing bridge girders
(OP)
hello
i am new here and i want to say thanks about this forum,
how can we demolish and remove damaged bridge span (42m)long. contain (6)girders (3.5m depth) without using gantry crane (because of high cost).also this span is over the river.
note: the bridge contain 10 spans(42m.l) each. and our specific span is no.6 and river width is (250m). if any one have any ideas can help us.thanks
i am new here and i want to say thanks about this forum,
how can we demolish and remove damaged bridge span (42m)long. contain (6)girders (3.5m depth) without using gantry crane (because of high cost).also this span is over the river.
note: the bridge contain 10 spans(42m.l) each. and our specific span is no.6 and river width is (250m). if any one have any ideas can help us.thanks





RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
LCruiser questions on the river are good ones. The width of the river 250m or 750feet give no information on reliable water depths for crane barges or pontoons. Is the river navagable? If so, is the span of note over the shipping channel? Are there restrictions placed on the channel by the appropriate shipping authorities?
Is there a limit on debris falling into the river? Can the span be felled and then salvaged out of the river?
If it is a steel span, it is likley you can cut joints in the concrete deck every so many meters (feet) and then look to torching off the steel girders near the inflection points and lifting the midspan of one girder at a time out. Of course, this needs to be reviewed by a structural/bridge engineer to insure it is safe.
If it is precast, then cutting the joints at the piers and lifting single girders out may be a possibility. That is a bit much of a span for a single crane, not weight but span and boom out distance.
In summary need more info.
Regards,
![[pipe] pipe](https://www.tipmaster.com/images/pipe.gif)
Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
Too many questions about the situation though...
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders
What am I missing?
Cool thread by the way.
RE: demolition and removing existing bridge girders
Keith Cress
kcress - http://www.flaminsystems.com
RE: demolition and removing existing bridge girders
VOD
RE: demolition and removing existing bridge girders
RE: demolition and removing existing bridge girders