ABSTRACT
ABSTRACT: In seismic regions, amajor constraint affecting the design of high speed rail viaducts is the track-structure interaction during the operation of the trains, and in particular when the train must remain safe at high speeds under the service design earthquake. The paper describes studies undertaken to establish design criteria and the analysis methods to be used for the design of high speed rail viaducts. These studies comprised non-linear analysis of the track and viaduct structure system under the actions of temperature variation, traction and braking, and multiple input nonlinear time history analysis for the response under earthquake loading.A series of parametric studies were undertaken and the conclusions from this work used to form the basis of a design specification.
1 TRACK-STRUCTURE INTERACTION IN NORMAL OPERATION
