Imperial College London
Alternate

ProfessorLorenzoMacorini

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of 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:2017:10.1016/j.strusafe.2017.07.001,
author = {Tubaldi, E and Macorini, L and Izzuddin, B and Manes, C and Laio, F},
doi = {10.1016/j.strusafe.2017.07.001},
journal = {Structural Safety},
pages = {11--22},
title = {A framework for probabilistic assessment of clear-water scour around bridge piers},
url = {http://dx.doi.org/10.1016/j.strusafe.2017.07.001},
volume = {69},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Scouring at the base of bridge piers is the major cause of bridge collapses worldwide. Computing the scour risk of bridge foundations is therefore key for a correct management and allocation of resources for maintenance and scour mitigation works. Existing risk-assessment models compute the vulnerability of bridge foundations to scour by comparing the equilibrium scour depth associated with peak-flow discharges characterized by a given return period (usually of 100–200 years) with the critical foundation depth of the bridge. This approach neglects completely the history-dependent and time-dependent nature of scour. Yet, it is well known that bridge collapses can often be induced by the accumulation of scour during multiple flood events.This study aims at developing a novel probabilistic framework for the computation of bridge-pier vulnerability to scour using a Markovian approach to account for memory effects in scour development. The paper focuses on the case of local pier scour occurring in clear-water conditions whereby cumulative effects are significant, well understood and known to be the cause of recent reported bridge collapses.A simplified numerical example consisting of an idealised bridge pier in a canal is considered to clarify the application of the proposed framework and to shed light on the effects of some assumptions introduced to simplify the probabilistic scour assessment.
AU  - Tubaldi,E
AU  - Macorini,L
AU  - Izzuddin,B
AU  - Manes,C
AU  - Laio,F
DO  - 10.1016/j.strusafe.2017.07.001
EP  - 22
PY  - 2017///
SN  - 0167-4730
SP  - 11
TI  - A framework for probabilistic assessment of clear-water scour around bridge piers
T2  - Structural Safety
UR  - http://dx.doi.org/10.1016/j.strusafe.2017.07.001
UR  - http://hdl.handle.net/10044/1/49912
VL  - 69
ER  -
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