Imperial College London
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DrCraigBuchanan

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 8076craig.buchanan

 
 
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Location

 

247Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wynne:2022:10.1016/j.cscm.2022.e01541,
author = {Wynne, Z and Buchanan, C and Kyvelou, P and Gardner, L and Kromanis, R and Stratford, T and Reynolds, T},
doi = {10.1016/j.cscm.2022.e01541},
journal = {Case Studies in Construction Materials},
title = {Dynamic testing and analysis of the world’s first metal 3D printed bridge},
url = {http://dx.doi.org/10.1016/j.cscm.2022.e01541},
volume = {17},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The MX3D Bridge is the world’s first additively manufactured metal bridge. It is a 10.5m-span footbridge, and its dynamic response is a key serviceability consideration. The bridge has a flowing, sculptural form and its response to footfall was initially studied using a 3D finite element (FE) model featuring the designed geometry and material properties obtained from coupon tests. The bridge was tested using experimental modal analysis (EMA) and operational modal analysis (OMA) during commissioning prior to installation. The results have shown that the measured vibration response of the bridge under footfall excitation is 200% greater than predictions based on the FE model and contemporary design guidance. The difference between predicted and measured behaviour is attributed to the complexity of the structure, underestimation of the modal mass in the FE model, and the time-variant modal behaviour of the structure under pedestrian footfall. Both OMA and EMA give a dominant natural frequency for the bridge of between 5.19Hz and 5.32Hz, higher than the FE model prediction of 4.31Hz, and average damping estimates across all modes of vibration below 15Hz of 0.61% and 0.74% respectively, higher than the 0.5% assumed within the design guidance, slightly reducing the peak response factor predicted for the bridge.
AU  - Wynne,Z
AU  - Buchanan,C
AU  - Kyvelou,P
AU  - Gardner,L
AU  - Kromanis,R
AU  - Stratford,T
AU  - Reynolds,T
DO  - 10.1016/j.cscm.2022.e01541
PY  - 2022///
SN  - 2214-5095
TI  - Dynamic testing and analysis of the world’s first metal 3D printed bridge
T2  - Case Studies in Construction Materials
UR  - http://dx.doi.org/10.1016/j.cscm.2022.e01541
UR  - http://hdl.handle.net/10044/1/100400
VL  - 17
ER  -
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