Structural Widening of 2-Span Continuous Prestressed Concrete Bridge: Structural and Seismic Implications
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Bibliographic Details
| Author(s): |
John Philp
(McElhanney Consulting Services Ltd, Vancouver, BC, Canada)
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 2188-2195 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.2188 | ||||
| Abstract: |
Widening of existing bridge structures to accommodate a capacity upgrade on roads each side are becoming more frequent for bridges that are still relatively young. Such widening must consider the interaction of new and existing structures during and after construction and the overall seismic performance and associated issues when an updated seismic code has to be applied. Here, the widening of the existing 208 Street Overpass across Highway #1 in Langley, British Columbia is presented explaining the evaluation and assessment techniques used to determine the constraints, design risks, seismic performance and the subsequent development of novel structural systems, innovative construction methods and advances in seismic design to complete the new structural design and seismic retrofit of the existing bridge. |
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| Keywords: |
shear walls post-tensioning seismic retrofit pile caps superstructure widening
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