Widening of the bridge over Zijkanaal C in highway A9 near Haarlem
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Bibliographic Details
| Author(s): |
Hans (J C. ). Galjaard
Dirk Feenstra |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013 | ||||
| Published in: | IABSE Conference, Rotterdam, May 2013 | ||||
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| Page(s): | 596-597 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2013 | ||||
| DOI: | 10.2749/222137813806548505 | ||||
| Abstract: |
In 2008 the bridge over Zijkanaal C had to be widened at both sides to accommodate an additional (rush hour) driving lane. The design was confined with a number of preconditions which made straightforward widening of the deck unfeasible. Primary reasons were large forces due to restrained deformations in combination with a lack of reinforcement in the original girders. Furthermore differential deflections due to traffic between old and new during construction were too large for hardening concrete. (Partly) closure of the bridge for a couple of days was not tolerable. An innovative method has therefore been used to couple the extension to the original deck requiring closure of the bridge for heavy traffic for no more than 12 hours. The calculations of the long term forces are based on Trost method [1] adapted to be used with a ordinary FE model. |
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| Keywords: |
bridges widening post-tensioning creep shrinkage drilling rapid construction Trosts-method
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