onr:"swepub:oai:DiVA.org:kth-324493"
Search: onr:"swepub:oai:DiVA.org:kth-324493" > Dynamic testing and...
- 1 of 1
- Previous record
- Next record
- To hitlist
Dynamic testing and numerical modelling of a pedestrian timber bridge at different construction stages
-
- Bergenudd, Jens (author)
- KTH,Bro- och stålbyggnad
-
- Battini, Jean-Marc, 1968- (author)
- KTH,Bro- och stålbyggnad
-
- Crocetti, Roberto (author)
- KTH,Byggnadsmaterial
- show more...
- show less...
- (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
- In: Engineering structures. - : Elsevier BV. - 0141-0296 .- 1873-7323. ; 279
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- This article studies the dynamic properties of a single span pedestrian timber bridge by in-situ testing and numerical modelling. The in-situ dynamic tests are performed at four different construction stages: (1) on only the timber structure, (2) on the timber structure with the railings, (3) on the timber structure with railings and an asphalt layer during warm conditions and (4) same as stage 3 but during cold conditions. Finite element models for the four construction stages are thereafter implemented and calibrated against the experimental results. The purpose of the study is to better understand how the different parts of the bridge contribute to the overall dynamic properties. The finite element analysis at stage 1 shows that longitudinal springs must be introduced at the supports of the bridge to get accurate results. The experimental results at stage 2 show that the railings contributes to 10% of both the stiffness and mass of the bridge. A shell model of the railings is implemented and calibrated in order to fit with the experimental results. The resonance frequencies decrease with 10–20% at stage 3 compared to stage 2. At stage 3 it is sufficient to introduce the asphalt as an additional mass in the finite element model. For that, a shell layer with surface elements is the best approach. The resonance frequencies increase with 15–30% between warm (stage 3) and cold conditions (stage 4). The stiffness of the asphalt therefore needs to be considered at stage 4. The continuity of the asphalt layer could also increase the overall stiffness of the bridge. The damping ratios increase at all construction stages. They are around 2% at warm conditions and around 2.5% at cold conditions for the finished bridge.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
Keyword
- Pedestrian bridge
- Timber
- Railings
- Asphalt
- Dynamic analysis
- Finite element modelling
- Bro- och stålbyggnad
- Structural Engineering and Bridges
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Engineering structures (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Bergenudd, Jens
- Battini, Jean-Ma ...
- Crocetti, Robert ...
- Pacoste, Costin
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Civil Engineerin ...
- Articles in the publication
- Engineering stru ...
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
