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Indicative notice - Langebro bridge - renovation of bascule span - Registration of internal condition of counterweights by non-destructive methods.

Ordregiver: Københavns Kommune - Sundheds- og Omsorgsforvaltningen

Offentliggjort
8 april 2024
Udførelsessted
København, DK011
Delkontrakter
1
Bekendtgørelsesnummer
00203447-2024-01
Officiel kilde
Officiel kilde

CPV-koder

Beskrivelse

Langebro is a bascule bridge in central Copenhagen, inaugurated in 1954. The counterweights of the bridge leaves consist of riveted steel boxes cast with concrete, which contain a large amount of scrap steel to increase the density and thus minimize the required size of the counterweights. The steel boxes are provided with internal steel bulkheads lengthwise and crosswise to increase rigidity and load-carrying capacity. Under the influence of many years of seeping water, significant rust attacks have occurred on steel (both structural steel and embedded scrap) and degradation of concrete. Through thickness meas-urements (ultrasound and drilling holes) from the outside, a varying degree of cross-sectional loss has been found on the outer steel plates due to corrosion, although not to a degree that currently gives rise to acute concern. The condition of the inner steel bulkheads is unknown, which is a prob-lem as they are essential for load-carrying capacity. The City of Copenhagen requests contact with companies that can use non-destructive methods to record the condition of internal steel structures and the aggregate concrete. The condition registration must be used to qualify the …

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