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

@inproceedings{Occhipinti:2017:10.7712/120117.5522.18445,
author = {Occhipinti, G and Izzuddin, B and Calio, I and Macorini, L},
doi = {10.7712/120117.5522.18445},
pages = {1685--1699},
title = {Realistic 3D nonlinear dynamic analysis of existing and retrofitted multi-storey RC buildings subject to earthquake loading},
url = {http://dx.doi.org/10.7712/120117.5522.18445},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - This paper presents a high fidelity numerical model developed to investigate the seismic performance of an original and retrofitted 10-storey reinforced concrete (RC) framed building. The analysed structure represents a typical existing building in Catania, Italy, which was designed according to old standards to resist gravity and wind loading but not earthquakes. The proposed numerical description adopts beam-column elements for beams and columns and special purpose shell elements for modelling RC floor slabs, both allowing for geometric and material nonlinearity. In order to model the influence of masonry infill, a novel macro-element is developed within a FE framework based on a discrete formulation. 3D nonlinear dynamic simulations are performed considering sets of natural accelerograms acting simultaneously along the two horizontal and the vertical directions and compatible with the design spectrum for the Near Collapse Limit State (NCLS). To improve computational efficiency, which is critical when investigating the nonlinear dynamic behaviour of large structures, the partitioning approach previously developed at Imperial College is adopted, enabling effective parallelisation on HPC systems. The numerical results obtained from the 3D nonlinear dynamic simulations are presented and discussed, focusing on the variation in time of the deformed shape, inter-storey drifts, plastic deformations and internal force distribution, considering or neglecting the infill panel contribution. The original structure showed a very poor seismic performance, where the consideration of the infill panel contribution leads to significant variation in the response. An effective strengthening solution utilising eccentric steel bracings with dissipative shear links is also illustrated and employed to retrofit the original structure. A detailed model of the retrofitting components is also proposed and implemented within the detailed model for the original building. The results of numeric
AU  - Occhipinti,G
AU  - Izzuddin,B
AU  - Calio,I
AU  - Macorini,L
DO  - 10.7712/120117.5522.18445
EP  - 1699
PY  - 2017///
SP  - 1685
TI  - Realistic 3D nonlinear dynamic analysis of existing and retrofitted multi-storey RC buildings subject to earthquake loading
UR  - http://dx.doi.org/10.7712/120117.5522.18445
ER  -
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