Imperial College London
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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{Camara:2017:10.1002/eqe.2884,
author = {Camara, A and Cristantielli, R and Astiz, MA and Malaga, Chuquitaype C},
doi = {10.1002/eqe.2884},
journal = {Earthquake Engineering & Structural Dynamics},
pages = {1811--1833},
title = {Design of hysteretic dampers with optimal ductility for the transverse seismic control of cable-stayed bridges},
url = {http://dx.doi.org/10.1002/eqe.2884},
volume = {46},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Cable-stayed bridges require a careful consideration of the lateral force exerted by the deck on the towersunder strong earthquakes. This work explores the seismic response of cable-stayed bridges with yieldingmetallic dampers composed of triangular plates (TADAS) that connect the deck with the supports in thetransverse direction. A design method based on an equivalent single-degree of freedom approximation isproposed. This is proved valid for conventional cable-stayed bridges with 200 and 400 m main spans, butnot 600 m. The height of the plates is chosen to (1) achieve a yielding capacity that limits the maximum forcetransmitted from the deck to the towers, and to (2) control the hysteretic energy that the dampers dissipate bydefining their design ductility. In order to select the optimal ductility and the damper configuration, a multi-objective response factor that accounts for the energy dissipation, peak damper displacement and low-cyclefatigue is introduced. The design method is applied to cable-stayed bridges with different spans and deck-support connections.The results show that the dissipation by plastic deformation in the dampers preventssignificant damage in the towers of the short-to-medium span bridges under the extreme seismic actions.However, the transverse response of the towers in the bridge with 600 m span is less sensitive to the TADASdampers.
AU  - Camara,A
AU  - Cristantielli,R
AU  - Astiz,MA
AU  - Malaga,Chuquitaype C
DO  - 10.1002/eqe.2884
EP  - 1833
PY  - 2017///
SN  - 1096-9845
SP  - 1811
TI  - Design of hysteretic dampers with optimal ductility for the transverse seismic control of cable-stayed bridges
T2  - Earthquake Engineering & Structural Dynamics
UR  - http://dx.doi.org/10.1002/eqe.2884
UR  - http://hdl.handle.net/10044/1/44204
VL  - 46
ER  -
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