Imperial College London

DrLorenzoMacorini

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Reader in Structural Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6078l.macorini

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

325Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tubaldi:2019:10.1080/15732479.2019.1655071,
author = {Tubaldi, E and Macorini, L and Izzuddin, B},
doi = {10.1080/15732479.2019.1655071},
journal = {Structure and Infrastructure Engineering},
pages = {328--345},
title = {Identification of critical mechanical parameters for advanced analysis of masonry arch bridges},
url = {http://dx.doi.org/10.1080/15732479.2019.1655071},
volume = {16},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The response up to collapse of masonry arch bridges is very complex and affected by many uncertainties. In general, accurate response predictions can be achieved using sophisticated numerical descriptions, requiring a significant number of parameters that need to be properly characterised. This study focuses on the sensitivity of the behaviour of masonry arch bridges with respect to a wide range of mechanical parameters considered within a detailed modelling approach. The aim is to investigate the effect of constitutive parameters variations on the stiffness and ultimate load capacity under vertical loading. First, advanced numerical models of masonry arches and of a masonry arch bridge are developed, where a mesoscale approach describes the actual texture of masonry. Subsequently, a surrogate kriging metamodel is constructed to replace the accurate but computationally expensive numerical descriptions, and global sensitivity analysis is performed to identify the mechanical parameters affecting the most the stiffness and load capacity. Uncertainty propagation is then performed on the surrogate models to estimate the probabilistic distribution of the response parameters of interest. The results provide useful information for risk assessment and management purposes, and shed light on the parameters that control the bridge behaviour and require an accurate characterisation in terms of uncertainty.
AU - Tubaldi,E
AU - Macorini,L
AU - Izzuddin,B
DO - 10.1080/15732479.2019.1655071
EP - 345
PY - 2019///
SN - 1573-2479
SP - 328
TI - Identification of critical mechanical parameters for advanced analysis of masonry arch bridges
T2 - Structure and Infrastructure Engineering
UR - http://dx.doi.org/10.1080/15732479.2019.1655071
UR - http://hdl.handle.net/10044/1/72260
VL - 16
ER -