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Structural Analysis of Bridges with Time-Variant Modulus of Elasticity under Moving Loads
Author(s)
Date Issued
2012
Date Available
2015-03-23T13:38:07Z
Abstract
A simply supported bridge model is used to investigate the effect of a strain rate dependent modulus of elasticity on the dynamic response of the structure to a moving load. The bridge is modelled as a one-dimensional discretized finite element beam and the moving load is represented by a point force. A constant modulus of elasticity is traditionally employed when simulating the dynamic response of structures under moving loads. In this paper, a time-variant modulus is used to calculate strains and displacements and compare them to the traditional approach for different speeds and bridge spans. The time-variant modulus is obtained from the strain rate of the structure which is used in turn to update the strain at each point in time. The results show significant changes in the modulus and in the resulting load effect as load magnitude and speed increase.
Type of Material
Conference Publication
Publisher
Taylor and Francis
Start Page
2652
End Page
2658
Copyright (Published Version)
2012 Taylor and Francis
Web versions
Language
English
Status of Item
Peer reviewed
Part of
Biondini, F. and Frangopol, D.M. (eds). Bridge Maintaintenance, Safety, Management, Resilience and Sustainability
Conference Details
6th International Conference on Bridge Maintenance, Safety and Management (IABMAS), Villa Erba, Lake Como, Italy, 8-12 July, 2012
ISBN
9780415621243
This item is made available under a Creative Commons License
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Aied_Gonzalez_2012_Analysis_of_Bridges_with_Time-Variant_Modulus_of_Elasticity_under_Moving_Loads.pdf
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661.17 KB
Format
Owning collection
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0
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