Modified traffic load models for reassessment of short-span highway bridges
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Bibliographic Details
| Author(s): |
Marcel Nowak
(Technical University of Munich, Chair of Concrete and Masonry Structures, GERMANY)
Oliver Fischer (Technical University of Munich, Chair of Concrete and Masonry Structures, GERMANY) |
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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): | 3392-3400 | ||||
| Total no. of pages: | 9 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/222137817822208591 | ||||
| Abstract: |
Towards the objective of a more differentiated and realistic approach for representing the actual traffic load impact on short-span structures for application in bridge reassessment, actual traffic load impact based on local traffic data, and the resulting structural demands on selected short- span bridge structures are analyzed. Structural models applied consider peculiarities of short-span bridges concerning bidirectional load carrying behavior due to a compact shape of their superstructure. To obtain robust results, additional scenarios are considered to simulate possible, unfavorable traffic constellations on the bridge. The resulting characteristic values of structural demand are used to calibrate a modified traffic load model. The paper presents results of this analysis for selected short-span bridge structures with varying span widths under different representative traffic types, and using different modelling assumptions. |
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| Keywords: |
highway bridge load model traffic simulation short-span bridge reassessment road traffic extreme load effect
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