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http://dx.doi.org/10.5762/KAIS.2020.21.11.683

Joint Displacement Resistance Evaluation of Waterproofing Material in Railroad Bridge Deck  

Bae, Young-Min (Department of Global Railway System, School of Railway Engineering Seoul National University of Science and Technology)
Oh, Dong-Cheon (Department of Global Railway System, School of Railway Engineering Seoul National University of Science and Technology)
Park, Yong-Gul (Department of Railway Construction, School of Railway Engineering Seoul National University of Science and Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.11, 2020 , pp. 683-692 More about this Journal
Abstract
A joint displacement resistance evaluation method for selecting waterproofing materials in railway bridge decks is proposed. The displacement range for an evaluation is determined by finite element method (FEM) analysis of a load case based on an existing high-speed PSC Girder Box railroad bridge structure. The FEM analysis results were used to calculate the minimum joint displacement range to be applied during testing (approximately 1.5 mm). For the evaluation, four commonly used waterproofing membrane types, cementitious slurry coating (CSC), polyurethane coating system (PCS), self-adhesive asphalt sheet (SAS), and composite asphalt sheet (CAS), were tested, with five specimens of each membrane type. The joint displacement width range conditions, including the minimum displacement range obtained from FEM analysis, were set to be the incrementing interval, from 1.5, 3.0, 4.5, and 6.0 mm. The proposal for the evaluation criteria and the specimen test results demonstrated how the evaluation method is important for the sustainability of high-speed railway bridges.
Keywords
Railway Bridge Deck; Waterproofing Membrane; Joint Displacement; New Evaluation Method; Finite Element Method Analysis; Bending Stress;
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