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Strengthening fly-over Rottepolder junction with external post-tensioning

 Strengthening fly-over Rottepolder junction with external post-tensioning
Autor(en): ,
Beitrag für IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013, veröffentlicht in , S. 388-389
DOI: 10.2749/222137813806501777
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The fly-over at the highway crossing Rottepolderplein in the A9 consists of two parallel viaducts. Each of them was designed for 3 driving lanes, but both have been used for 2 lanes only since its ...
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Bibliografische Angaben

Autor(en):

Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013
Veröffentlicht in:
Seite(n): 388-389 Anzahl der Seiten (im PDF): 7
Seite(n): 388-389
Anzahl der Seiten (im PDF): 7
Jahr: 2013
DOI: 10.2749/222137813806501777
Abstrakt:

The fly-over at the highway crossing Rottepolderplein in the A9 consists of two parallel viaducts. Each of them was designed for 3 driving lanes, but both have been used for 2 lanes only since its construction in the late 1970’s. Due to increasing traffic an additional third and (during maintenance of the bridge for the other driving direction) a fourth lane was required. The deck slab was wide enough and reassessment showed that the deck slab, as well as the box-girders had sufficient bending capacity for the intended use. The shear capacity of the box-girders however was insufficient for an additional lane. This was primarily due to changes in the principles with respect to the detailing of the shear reinforcement since the construction. External post-tensioning has been applied to reduce the shear forces in the webs of the box-girders enabling a third, and if necessary fourth, lane.

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