Edge Beams

by Martti Kelindeman

Institution: KTH Royal Institute of Technology
Year: 2014
Keywords: bridge edge beam; investment cost; prefabrication; Engineering and Technology; Civil Engineering; Teknik och teknologier; Samhällsbyggnadsteknik; Degree of Master - Infrastructure Engineering; Teknologie masterexamen - Teknisk infrastruktur; Structural Design and Bridges; Brobyggnad
Record ID: 1338275
Full text PDF: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155211


Edge beams in Sweden are subjected to harsh environmental conditions, such as de-icing salts and numerous freeze-thaw cycles, which result in large expenditures for the maintenance of these items. Driven by that fact, a project was initiated to investigate the life of edge beams in more detail.   The main objective of the work was to determine and provide reliable input for establishment of investment cost of edge beams. The data was later utilized in an application of life-cycle cost analysis - created by a Ph.D student. Case studies - ongoing bridge construction projects in Askersund, Rotebro and Kallhäll - gave the basis for the research. Site visits were performed and engineers were consulted for data collection.   As an outcome of the project, costs for the edge beams in the case studies were calculated and comparative charts were presented that reveal the magnitude of cost contributors to the bridge edge beam system.   The work illustrates that the construction of edge beams is a workforce demanding process. Hence it is suggested that, to find the most optimal edge beam solution in terms of investment cost and life-cycle considerations, various construction methods such as prefabrication of edge beams should be tested and analysed.