Imperial College London
Portrait Picture

Dr Christian Malaga-Chuquitaype

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5007c.malaga Website CV

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

322Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kashani:2017:10.1007/s10518-017-0116-8,
author = {Kashani, M and Malaga, Chuquitaype C and Yang, S and Alexander, N},
doi = {10.1007/s10518-017-0116-8},
journal = {Bulletin of Earthquake Engineering},
pages = {3897--3918},
title = {Influence of non-stationary content of ground-motions on nonlinear dynamic response of RC bridge piers},
url = {http://dx.doi.org/10.1007/s10518-017-0116-8},
volume = {15},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper quantifies the impact of the non-stationary content (time-varying parameters that are not captured by power spectral density alone) of different ground-motion types (near/far field, with/without pulses time-series) on the nonlinear dynamic response of reinforced concrete (RC) bridge piers, taking into account the material cyclic degradation. Three groups of ground motions are selected to represent far-field, near-field without pulse and near-field pulse-like ground motions. Three analysis cases are considered corresponding to acceleration series matched to the mean response spectrum of: (i) far field, (ii) near-field without pulse and (iii) near-field pulse-like ground- motions, respectively. Using the selected ground motions, several nonlinear incremental dynamic analyses (IDAs) of prototype reinforced concrete bridge piers with a range of fundamental periods are conducted. Finally, a comparison between the response of the structures using the material model accounting for both buckling and low-cycle fatigue of reinforcing steel and the more conventional material model that does not account for these effects is made. The results show that the inelastic buckling and low-cycle fatigue have a significant influence on the nonlinear response of the RC bridge piers considered and that pulse effects can increase the mean acceleration response by about 50%.
AU  - Kashani,M
AU  - Malaga,Chuquitaype C
AU  - Yang,S
AU  - Alexander,N
DO  - 10.1007/s10518-017-0116-8
EP  - 3918
PY  - 2017///
SN  - 1573-1456
SP  - 3897
TI  - Influence of non-stationary content of ground-motions on nonlinear dynamic response of RC bridge piers
T2  - Bulletin of Earthquake Engineering
UR  - http://dx.doi.org/10.1007/s10518-017-0116-8
UR  - http://hdl.handle.net/10044/1/45510
VL  - 15
ER  -
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