Dynamic amplification factor of continuous versus simply supported bridges due to the action of a moving vehicle

Title: Dynamic amplification factor of continuous versus simply supported bridges due to the action of a moving vehicle
Authors: González, Arturo
Mohammed, Omar
Permanent link: http://hdl.handle.net/10197/9569
Date: 18-May-2018
Abstract: Research to date on Dynamic Amplification Factors (DAFs) caused by traffic loading, mostly focused on simply supported bridges, is extended here to multiple-span continuous bridges. Emphasis is placed upon assessing the DAF of hogging bending moments, which has not been sufficiently addressed in the literature. Vehicle-bridge interaction simulations are employed to analyze the response of a finite element discretized beam subjected to the crossing of two vehicle types: a 2-axle-truck and a 5-axle truck-trailer. Road irregularities are randomly generated for two ISO roughness classes. Noticeable differences appear between DAF of mid-span moment in a simply supported beam, and DAFs of the mid-span sagging moment and of the hogging moment over the internal support in a continuous multiple-span beam. Although the critical location of the maximum static moment over the internal support may indicate that DAF of hogging moment would have to be relatively small, this paper provides evidence that this is not always the case, and that DAFs of hogging moments can be as significant as DAF of sagging moments.
Type of material: Journal Article
Publisher: MDPI
Journal: Infrastructures
Volume: 3
Issue: 12
Start page: 1
End page: 15
Copyright (published version): 2018 the Authors
Keywords: Dynamic amplification factorVehicle bridge interactionSimply supported bridgesContinuous bridgesTraffic loadBending moment
DOI: 10.3390/infrastructures3020012
Language: en
Status of Item: Peer reviewed
Appears in Collections:Critical Infrastructure Group Research Collection
Earth Institute Research Collection
Civil Engineering Research Collection
TRUSS-ITN Research Collection

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