Computational & Technology Resources
an online resource for computational,
engineering & technology publications
International Journal of Railway Technology
ISSN 2049-5358
IJRT, Volume 3, Issue 2, 2014
Analysis of Slab Frame Bridges for High-Speed Trains: Practical Modelling Aspects
M. Solat Yavari1,2, C. Johansson1,2, C. Pacoste1,2 and R. Karoumi2

1ELU Konsult AB, Stockholm, Sweden
2Division of Structural Engineering and Bridges, Royal Institute of Technology (KTH), Stockholm, Sweden

Full Bibliographic Reference for this paper
M. Solat Yavari, C. Johansson, C. Pacoste, R. Karoumi, "Analysis of Slab Frame Bridges for High-Speed Trains: Practical Modelling Aspects", International Journal of Railway Technology, 3(2), 23-38, 2014. doi:10.4203/ijrt.3.2.2
Keywords: slab frame bridge, high-speed train, acceleration, soil-structure interaction, wing walls, finite element analysis.

The study, described in this paper, investigates the maximum vertical deck acceleration of single-span slab frame railway bridges. It employs the parametric study based on a real data bank of typical bridges in Sweden. Under the design assumptions based on the Swedish code for railway bridges, this research has three main aims. The first aim is to study the effect of wing walls on the dynamic response of the bridges. The second is to study how varying soil stiffness affects the acceleration. The last is to make a simple comparison, with respect to bridge deck acceleration, between two-dimensional and three-dimensional models. Comparison between the results obtained shows that wing walls noticeably reduce the dynamic acceleration, and two-dimensional models give lower acceleration compared to three-dimensional models but not less than 50%. Moreover, acceleration, particularly in relatively larger bridges, is not affected by the soil stiffness when the soil stiffness passes a certain level. These conclusions can be used in a quick and time-saving way in practical situations for predicting and improving the dynamic response of bridges.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to IJRT
purchase this issue (price £70 +P&P)