Imperial College London
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ProfessorPeterStafford

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Engineering Seismology
 
 
 
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Contact

 

+44 (0)20 7594 7916p.stafford

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

321Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Camara:2014:10.1016/j.engstruct.2013.12.030,
author = {Camara, A and Nguyen, K and Ruiz-Teran, AM and Stafford, PJ},
doi = {10.1016/j.engstruct.2013.12.030},
journal = {Engineering Structures},
pages = {61--72},
title = {Serviceability limit state of vibrations in under-deck cable-stayed bridges accounting for vehicle-structure interaction},
url = {http://dx.doi.org/10.1016/j.engstruct.2013.12.030},
volume = {61},
year = {2014}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Verification of the serviceability limit state of vibrations due to traffic live loads can be neglected in conventional types of concrete road bridges but becomes critical in the design of slender structures like under-deck cable-stayed bridges. The novelty of the work presented in this article is that an innovative vehicle-bridge interaction model is employed, in which realistic wheel dimensions of heavy trucks, road roughness profiles and the cross slope of the road are considered in nonlinear dynamic analyses of detailed three-dimensional finite element models. An extensive parametric study is conducted to explore the influence of the bridge parameters such as the longitudinal and transverse cable arrangement and the support conditions, in addition to the load modelling, road quality, the wheel size, the transverse road slope and the vehicle position and speed on the response of under-deck cable-stayed bridges. It has been observed that the vibrations perceived by pedestrians can be effectively reduced by concentrating the cable-system below the deck at the bridge centreline. The Fourier amplitude spectrum of the acceleration at critical positions along the deck proved that the response of under-deck cable-stayed bridges is not dominated only by contributions at the fundamental mode and, consequently, the conventional deflection-based methods are not valid to assess the users comfort. Instead, Vehicle-Bridge Interaction analyses are recommended for detailed design, considering the wheel dimensions if the pavement quality is bad and/or if the wheel radius is large. Finally, we verify through multiple approaches that the comfort of pedestrian users is more critical than that of vehicle users. However, the comfort of vehicle users is shown to be significantly affected when the road quality is poor.
AU  - Camara,A
AU  - Nguyen,K
AU  - Ruiz-Teran,AM
AU  - Stafford,PJ
DO  - 10.1016/j.engstruct.2013.12.030
EP  - 72
PY  - 2014///
SN  - 0141-0296
SP  - 61
TI  - Serviceability limit state of vibrations in under-deck cable-stayed bridges accounting for vehicle-structure interaction
T2  - Engineering Structures
UR  - http://dx.doi.org/10.1016/j.engstruct.2013.12.030
UR  - https://www.sciencedirect.com/science/article/abs/pii/S0141029613006172?via%3Dihub
UR  - http://hdl.handle.net/10044/1/14314
VL  - 61
ER  -
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