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Repair and Strengthening of Railway Bridges - Guideline SB-STR: Sustainable Bridges, SB-D6.1
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
Trafikverket.
COWI, Lyngby, Denmark.
2007 (English)Report (Refereed)
Abstract [en]

Not all bridges need to be strengthened. More refined calculation models or following up through monitoring may show that strengthening is obsolete. Nevertheless, if it is found that strengthening is necessary, then it would be advantageous if the owner, designer and contractor are given guidance. This report presents a structured way to address strengthening needs and suitable strengthening systems connected to that need.The purpose with this report (guideline) is to give the railway owners (and also the designer and contractors) guidance for repair and strengthening of railway bridges. The proposed method of working with this guideline is new and innovative, taking the standpoint in the bridge component that needs to be strengthened, i.e. flexure, shear etc. and from that level suggesting a strengthening method. The method itself is connected to what here has been denoted a graphical index. For each bridge type and/or structural element, a sketch is presented and locations for different common strengthening problems are highlighted. To the problem, a method description and a case study are then connected which clearly explain how the strengthening problem can be solved. In the guideline focus has foremost been placed on new repair and strengthening methods that have been investigated in the work within work package 6 in the Sustainable Bridges project. However, an extended summary of commonly used strengthening methods for concrete, metallic and masonry arch bridges is also presented – but not to the same extend as for FRP bonding and external prestressing. It is suggested that the report is used as a living document and has also been written as such. That means that it should be easy and possible to upgrade the method of working with new strengthening methods and systems, it should also be possible to add for example design suggestions and more detailed work descriptions if needed. The method of working is very suitable to incorporate in a database which then easily could be upgraded over time. However, this has not been possible to accomplish within the current project. The guideline contains a main report showing the structure to follow. In the appendices are the method descriptions and cases studies appended.

Place, publisher, year, edition, pages
2007.
Keywords [en]
Repair, Strengthening, Bridges, Railway
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-74984OAI: oai:DiVA.org:ltu-74984DiVA, id: diva2:1330507
Projects
Sustainable Bridges – Assessment for Future Traffic Demands and Longer Lives
Note

EC, FP6, Sixth Framework Program

TIP3-CT-2003-001653

Available from: 2019-06-25 Created: 2019-06-25 Last updated: 2019-08-14

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SB-STR(15867 kB)6 downloads
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File name FULLTEXT01.pdfFile size 15867 kBChecksum SHA-512
89f456a6a965b68ce550e89739b1101b4d65e843eb2aa97040c2112ddd5adb79b8501a5d6aa38ae3a81b9a93e4a5614f8a304d7386176b0675831b487ba2034a
Type fulltextMimetype application/pdf

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