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http://dx.doi.org/10.12814/jkgss.2021.20.2.035

Sub-structuring Technique of High-speed Train-bridge Interaction Analysis for Foundation Design  

Lee, Kang-Il (Department of Civil Engineering, Daejin Univ.)
Song, Myung-Kwan (Technology Development Center, Saman Corporation)
Publication Information
Journal of the Korean Geosynthetics Society / v.20, no.2, 2021 , pp. 35-43 More about this Journal
Abstract
In this paper, the sub-structuring technique-applied train-bridge interaction analysis model, which is formulated based on the simplified three-dimensional train-bridge interaction analysis model for high-speed bridge-train interaction analysis, is presented. In the sub-structuring technique, the super-structure and the supporting structure of railway bridges can be modeled as sub-structures, and train-bridge interaction analysis can be efficiently performed. As a train analysis model, two-dimensional train model is used, and the Lagrange equation of motion is applied to derive the equation of motion of two-dimensional train. In the sub-structuring technique, the number of degrees of freedom can be reduced by using the condensation method, thus reducing the time and cost for calculating the eigenvalues and eigenvectors, and the time and cost for the subsequent calculation. In this paper, Guyan reduction method is used as sub-structuring technique. By combining simplified three-dimensional bridge-train interaction analysis and Guyan reduction method, the efficient and accurate bridge-train interaction analysis can be performed.
Keywords
High-speed train-bridge interaction; Sub-structuring technique; Guyan reduction method;
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Times Cited By KSCI : 1  (Citation Analysis)
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