Dynamic Response of Railway Bridges, Part II: Parametric and Case Studies on Bridge-Train Dynamics and Interaction

The objective of this study is to provide the engineering practice with a tool for simplified dynamic response assessment of high-speed railway bridges in the pre-design phase. To serve this purpose, a non-dimensional representation of the characteristic parameters of the train–bridge interaction problem is described and extended based on a beam bridge model subjected to the static axle loads of the crossing high-speed train. The non-dimensional parameter representation is used to discuss several code-related design issues. It is revealed that in an admitted parameter domain, a code-regulated static assessment of high-speed railway bridges may under-predict the actual dynamic response. Furthermore, the minimum mass of a bridge as a function of the characteristic parameters is presented to comply with the maximum bridge acceleration specified in standards.

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Lateral Dynamic Response of Full-Scale Single Piles: Case Studies in India

Full-Scale Testing and Foundation Design ◽

10.1061/9780784412084.0049 ◽

2012 ◽

Cited By ~ 2

Author(s):

R. Ayothiraman ◽

A. Boominathan ◽

S. Krishna Kumar

Keyword(s):

Dynamic Response ◽

Case Studies ◽

Full Scale ◽

Single Piles

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Simulation of Longitudinal Train Dynamics: Case Studies Using the Train Energy and Dynamics Simulator (TEDS)

2015 Joint Rail Conference ◽

10.1115/jrc2015-5760 ◽

2015 ◽

Cited By ~ 2

Author(s):

Monique F. Stewart ◽

S. K. (John) Punwani ◽

David R. Andersen ◽

Graydon F. Booth ◽

Som P. Singh ◽

...

Keyword(s):

Energy Efficiency ◽

Case Studies ◽

State Of The Art ◽

Longitudinal Dynamics ◽

Simulation Tools ◽

Power Operations ◽

Real World Applications ◽

Train Dynamics ◽

And Performance ◽

Train Safety

Longitudinal dynamics influence several measures of train performance, including schedules and energy efficiency, stopping distances, run-in/run-out forces, etc. Therefore, an effective set of tools for studying longitudinal dynamics is essential to improving the safety and performance of train operations. Train Energy and Dynamics Simulator (TEDS) is a state-of-the-art software program designed and developed by the Federal Railroad Administration (FRA), for studying and simulating train safety and performance, and can be used for modeling train performance under a wide variety of equipment, track, and operating configurations [1]. Several case studies and real-world applications of TEDS, including the investigation of multiple train make-up and train handling related derailments, a study of train stopping distances, evaluations of the safety benefits of Electronically Controlled Pneumatic (ECP) brakes, Distributed Power operations, and a study of alternate train handling methodologies are described in this paper. These studies demonstrate the effectiveness of using the appropriate simulation tools to quantify and enhance a better understanding of train dynamics, and the resultant safety benefits.

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