20 April 2016 Development of a numerical model for vehicle-bridge interaction analysis of railway bridges
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Abstract
In the field of civil engineering, analyzing dynamic response was main concern for a long time. These analysis methods can be divided into moving load analysis method and moving mass analysis method, and formulating each an equation of motion has recently been studied after dividing vehicles and bridges. In this study, the numerical method is presented, which can consider the various train types and can solve the equations of motion for a vehicle-bridge interaction analysis by non-iteration procedure through formulating the coupled equations for motion. Also, 3 dimensional accurate numerical models was developed by KTX-vehicle in order to analyze dynamic response characteristics. The equations of motion for the conventional trains are derived, and the numerical models of the conventional trains are idealized by a set of linear springs and dashpots with 18 degrees of freedom. The bridge models are simplified by the 3 dimensional space frame element which is based on the Euler-Bernoulli theory. The rail irregularities of vertical and lateral directions are generated by PSD functions of the Federal Railroad Administration (FRA).
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Hee Ju Kim, Hee Ju Kim, Eun Sang Cho, Eun Sang Cho, Jun Su Ham, Jun Su Ham, Ki Tae Park, Ki Tae Park, Tae Heon Kim, Tae Heon Kim, } "Development of a numerical model for vehicle-bridge interaction analysis of railway bridges", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98034K (20 April 2016); doi: 10.1117/12.2218784; https://doi.org/10.1117/12.2218784
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