TY - JOUR
T1 - Seismic retrofit of existing buildings led by NON-LINEAR DYNAMIC analyses
AU - Porcu, Maria Cristina
AU - Vielma, Juan Carlos
AU - Panu, Francesco
AU - Aguilar, Claudia
AU - Curreli, Giuseppe
N1 - Publisher Copyright:
© 2019 WIT Press
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Although still little used in practice, the non-linear time-history (NLTH) analysis is the most powerful method to design new earthquake-resistant buildings. This kind of analysis may even help the designer to assess the seismic performance of existing buildings and suitably plan their retrofit. With reference to a pre-seismic-code r/c building and to a suite of Italian spectrum-consistent earthquakes, the paper highlights the advantages of adopting NLTH analyses to evidence critical features in the seismic response of existing buildings and to assess in advance the effectiveness of their retrofit strategy. To this purpose, the behaviour of the retrofitted building should be suitably modelled. This paper shows how this can be done when carbon fibre reinforced polymer is used to strengthen the critical sections. Two advanced finite element programmes are adopted in parallel to carry out the numerical analyses: SAP2000 and SeismoStruct. The differences involved in the numerical model are discussed and the main advantages of a three-step procedure based on the NLTH approach are evidenced.
AB - Although still little used in practice, the non-linear time-history (NLTH) analysis is the most powerful method to design new earthquake-resistant buildings. This kind of analysis may even help the designer to assess the seismic performance of existing buildings and suitably plan their retrofit. With reference to a pre-seismic-code r/c building and to a suite of Italian spectrum-consistent earthquakes, the paper highlights the advantages of adopting NLTH analyses to evidence critical features in the seismic response of existing buildings and to assess in advance the effectiveness of their retrofit strategy. To this purpose, the behaviour of the retrofitted building should be suitably modelled. This paper shows how this can be done when carbon fibre reinforced polymer is used to strengthen the critical sections. Two advanced finite element programmes are adopted in parallel to carry out the numerical analyses: SAP2000 and SeismoStruct. The differences involved in the numerical model are discussed and the main advantages of a three-step procedure based on the NLTH approach are evidenced.
KW - Ductility
KW - FRP reinforcement
KW - Non-linear dynamic analysis
KW - Seismic retrofit of r/c buildings
UR - http://www.scopus.com/inward/record.url?scp=85072682965&partnerID=8YFLogxK
U2 - 10.2495/SAFE-V9-N3-201-212
DO - 10.2495/SAFE-V9-N3-201-212
M3 - Article
AN - SCOPUS:85072682965
VL - 9
SP - 201
EP - 212
JO - International Journal of Safety and Security Engineering
JF - International Journal of Safety and Security Engineering
SN - 2041-9031
IS - 3
ER -