THESIS
2019
xiv, 118 pages : illustrations (some color) ; 30 cm
Abstract
This study provided a systematic approach to study the vehicle bridge interaction for high speed
railways. A simulation tool using MATLAB is developed to effectively model the vehicle bridge
system using basis of Finite Element Method (FEM) by considering the interactions between the
vehicle and bridge. The concept is further extended to development of a versatile model using
FEM package, enabling the interactions to be efficiently studied for high speed railways viaduct
systems. The application of the proposed method on several viaduct configurations is presented
as numerical examples.
Furthermore, a design recommendation previously developed is critically studied and review
using the proposed method, to identify the suitability of the recommendations on the safety and operatio...[
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This study provided a systematic approach to study the vehicle bridge interaction for high speed
railways. A simulation tool using MATLAB is developed to effectively model the vehicle bridge
system using basis of Finite Element Method (FEM) by considering the interactions between the
vehicle and bridge. The concept is further extended to development of a versatile model using
FEM package, enabling the interactions to be efficiently studied for high speed railways viaduct
systems. The application of the proposed method on several viaduct configurations is presented
as numerical examples.
Furthermore, a design recommendation previously developed is critically studied and review
using the proposed method, to identify the suitability of the recommendations on the safety and operational requirement of high speed rail, especially in rapid progress of increasing speed trend.
The results of different configurations are studied and presented in this thesis to roundup the
techniques proposed.
The simulation results indicated the trend in speed increment could lead to peak response that
does not occur in normal operation speed under the current typical speed range as well as train
length of High Speed Rail. Besides, different type of bridge structure and stiffness could lead to
different order of magnitude of response under the same moving train arrangement. The
numerical examples also demonstrated that the flaw in previous recommendation on certain
bridge span length (L) over train wheel distance (d) ratio (referred as L/d ratio).
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