Lateral dynamic bridge deck-pier interaction for ultra-high-speed Hyperloop train loading

Ehsan  Ahmadi; Nicholas A Alexander; Mehdi Kashani

doi:10.1680/jbren.19.00011

Lateral dynamic bridge deck-pier interaction for ultra-high-speed Hyperloop train loading

Ehsan Ahmadi, Nicholas A Alexander, Mehdi Kashani

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Abstract

The next generation of ultra-high-speed (UHS) trains, known as Hyperloop and TransPod, are aerospace type vehicles designed to carry passengers. The UHS employs a vehicle capsule within a protected vacuum tube deck, supported by reinforced concrete piers (i.e. multi-span viaduct). The tube environment allows multiple UHS vehicles to run in parallel simultaneously (i.e. twin tube deck) where asymmetric train loading will result in a large dynamic unbalanced moment on the piers. Therefore, exploring the lateral dynamic interaction of bridge deck (twin tube) and piers under such an unbalanced moment is an extremely important factor for analysis of viaducts under dynamic UHS train loading. Hence, this paper analytically addresses the dynamic bridge deck-pier interaction under UHS train loading for lateral vibration.

Original language	English
Number of pages	27
Journal	Proceedings of the ICE - Bridge Engineering
Early online date	30 Sept 2019
DOIs	https://doi.org/10.1680/jbren.19.00011
Publication status	E-pub ahead of print - 30 Sept 2019

Keywords

bridges
railway systems
dynamics
lateral bridge deck-pier interaction
ultra-high-speed Hyperloop train
dynamic amplification factor

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10.1680/jbren.19.00011

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Thomas Telford (ICE Publishing) at https://www.icevirtuallibrary.com/doi/abs/10.1680/jbren.19.00011 . Please refer to any applicable terms of use of the publisher.
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title = "Lateral dynamic bridge deck-pier interaction for ultra-high-speed Hyperloop train loading",

abstract = "The next generation of ultra-high-speed (UHS) trains, known as Hyperloop and TransPod, are aerospace type vehicles designed to carry passengers. The UHS employs a vehicle capsule within a protected vacuum tube deck, supported by reinforced concrete piers (i.e. multi-span viaduct). The tube environment allows multiple UHS vehicles to run in parallel simultaneously (i.e. twin tube deck) where asymmetric train loading will result in a large dynamic unbalanced moment on the piers. Therefore, exploring the lateral dynamic interaction of bridge deck (twin tube) and piers under such an unbalanced moment is an extremely important factor for analysis of viaducts under dynamic UHS train loading. Hence, this paper analytically addresses the dynamic bridge deck-pier interaction under UHS train loading for lateral vibration.",

keywords = "bridges, railway systems, dynamics, lateral bridge deck-pier interaction, ultra-high-speed Hyperloop train, dynamic amplification factor",

author = "Ehsan Ahmadi and Alexander, \{Nicholas A\} and Mehdi Kashani",

year = "2019",

month = sep,

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doi = "10.1680/jbren.19.00011",

language = "English",

journal = "Proceedings of the ICE - Bridge Engineering",

issn = "1478-4637",

publisher = "ICE Publishing",

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TY - JOUR

T1 - Lateral dynamic bridge deck-pier interaction for ultra-high-speed Hyperloop train loading

AU - Ahmadi, Ehsan

AU - Alexander, Nicholas A

AU - Kashani, Mehdi

PY - 2019/9/30

Y1 - 2019/9/30

N2 - The next generation of ultra-high-speed (UHS) trains, known as Hyperloop and TransPod, are aerospace type vehicles designed to carry passengers. The UHS employs a vehicle capsule within a protected vacuum tube deck, supported by reinforced concrete piers (i.e. multi-span viaduct). The tube environment allows multiple UHS vehicles to run in parallel simultaneously (i.e. twin tube deck) where asymmetric train loading will result in a large dynamic unbalanced moment on the piers. Therefore, exploring the lateral dynamic interaction of bridge deck (twin tube) and piers under such an unbalanced moment is an extremely important factor for analysis of viaducts under dynamic UHS train loading. Hence, this paper analytically addresses the dynamic bridge deck-pier interaction under UHS train loading for lateral vibration.

AB - The next generation of ultra-high-speed (UHS) trains, known as Hyperloop and TransPod, are aerospace type vehicles designed to carry passengers. The UHS employs a vehicle capsule within a protected vacuum tube deck, supported by reinforced concrete piers (i.e. multi-span viaduct). The tube environment allows multiple UHS vehicles to run in parallel simultaneously (i.e. twin tube deck) where asymmetric train loading will result in a large dynamic unbalanced moment on the piers. Therefore, exploring the lateral dynamic interaction of bridge deck (twin tube) and piers under such an unbalanced moment is an extremely important factor for analysis of viaducts under dynamic UHS train loading. Hence, this paper analytically addresses the dynamic bridge deck-pier interaction under UHS train loading for lateral vibration.

KW - bridges

KW - railway systems

KW - dynamics

KW - lateral bridge deck-pier interaction

KW - ultra-high-speed Hyperloop train

KW - dynamic amplification factor

U2 - 10.1680/jbren.19.00011

DO - 10.1680/jbren.19.00011

M3 - Article (Academic Journal)

SN - 1478-4637

JO - Proceedings of the ICE - Bridge Engineering

JF - Proceedings of the ICE - Bridge Engineering

ER -

Lateral dynamic bridge deck-pier interaction for ultra-high-speed Hyperloop train loading

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