Spectral shape-based assessment of SDOF nonlinear response to real, adjusted and artificial accelerograms

Iervolino, Iunio; Luca, Flavia De; Cosenza, Edoardo

doi:10.1016/j.engstruct.2010.04.047

Cited by 74 publications

(71 citation statements)

References 22 publications

(32 reference statements)

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“…For each damage states considered, two pairs of seven linearly scaled accelerograms are selected through Rexel 3.5 software (Iervolino et al, 2010b), see Figure 7. Spectral compatibility with the two target spectra of the area is considered according to EC8 selection criteria, and limiting the scaling factor up to 2 (Iervolino et al, 2010a).…”

Section: Analysis Methodologiesmentioning

confidence: 99%

“…In the case of nonlinear time-history analysis sets of three or at least seven accelerograms can be considered if the demand is evaluated as the maximum of the set or as the mean of the sets respectively (see Iervolino et al 2010a). In EC8 part 3 (CEN, 2005), for existing buildings, linear analysis (both static and dynamic) are allowed considering the elastic spectral acceleration or the elastic spectrum without the application of any reduction factor and applying these methods according to a displacement-based approach (it means that verification of ductile mechanisms should be based on deformations).…”

Section: Analysis Methodologiesmentioning

confidence: 99%

See 1 more Smart Citation

Seismic Assessment via EC8 of Modern Heritage Structures

Verderame

Luca

Manfredi

2015

Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures

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means, electronic or mechanical, including photocopying, without written permission from the publisher. Product or company names used in this set are for identification purposes only. Inclusion of the names of the products or companies does not indicate a claim of ownership by IGI Global of the trademark or registered trademark.Library of Congress Cataloging-in-Publication Data British Cataloguing in Publication Data A Cataloguing in Publication record for this book is available from the British Library.All work contributed to this book is new, previously-unpublished material. The views expressed in this book are those of the authors, but not necessarily of the publisher.For electronic access to this publication, please contact: eresources@igi-global.com.Handbook of research on seismic assessment and rehabilitation of historic structures / Panagiotis G.

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Section: Analysis Methodologiesmentioning

confidence: 99%

Section: Analysis Methodologiesmentioning

confidence: 99%

Seismic Assessment via EC8 of Modern Heritage Structures

Verderame

Luca

Manfredi

2015

Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures

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“…Linear scaling procedure of the accelerograms does not affect the response given the spectral restraint provided by code's prescriptions (see [35] for details). Ground motion sets are composed of seven pairs of accelerograms, each one corresponding to North-South and East-West components of the same record.…”

Section: Nonlinear Dynamic Analysis and Assessmentmentioning

confidence: 99%

“…Rexel 3.5 software [36] is employed for the selection of spectrumcompatible accelerograms. Linear amplitude scaling procedure is employed to reduce dispersion of accelerograms' elastic spectra with respect to the target code spectra [35]. Accelerograms are selected from the European Strong Motion Database (ESD, http://www.isesd.hi.is/), in a range of magnitude (M) 6 to 7.5, and a range of epicentral distances (R) 0 to 50 km.…”

Section: Nonlinear Dynamic Analysis and Assessmentmentioning

confidence: 99%

Eurocode-based seismic assessment of modern heritage RC structures: The case of the Tower of the Nations in Naples (Italy)

Luca

Verderame

Manfredi

2014

Engineering Structures

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Given the interest earned recently by modern heritage structures, seismic assessment criteria of Eurocode 8 for ordinary reinforced concrete structures are applied to a modern heritage RC building. The case study building, the Tower of the Nations in Naples, was designed at the end of 30's. Modal dynamic identification, in situ inspections and testing provided the necessary knowledge of the structure in terms of geometry, structural details, and material properties. Two nonlinear models of the structure are built up in both the hypotheses of accounting and not accounting for tuff infills' stiffness and strength contribution. Lumped plasticity model for reinforced concrete elements and equivalent strut models for tuff and concrete infills are employed. Seismic assessment through nonlinear dynamic analyses is carried out for both Damage Limitation and Significant Damage limit states. Assessment of bare and infilled models emphasizes a lower demand in terms of maximum interstorey drift of the infilled model with respect to the bare model, for both limit states considered. Record-to-record variability for the sets of seven records becomes larger if infills strength and stiffness contribution is taken into account. The outcome of the assessment is not affected by infills, i.e. the structure can be considered safe (according to EC8 provisions) for both limit states, and in both modeling hypotheses. On the other hand, the demand over capacity ratio, for both the limit states considered, is strictly influenced by infills' contribution. Results provided show that Eurocode assessment tools for ordinary RC structures can be addressed to modern heritage buildings, even if specific care is necessary for nonlinear structural modeling in case of non-conventional structural elements and nonconventional structural materials (e.g., tuff infills in lieu of clay hollow brick infills).

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“…This procedure is based on the LHS technique and it is presented schematically in Significant dispersion was observed on the structural response with the use of different natural records (Iervolino et. al, 2009), while the implementation of artificial accelerograms tends to underestimate seismic response (Iervolino et. al, 2010).…”

Section: Fault Area Magnitude Relation Epistemic Magnitude Uncertaintmentioning

confidence: 99%

Advanced computational methods for seismic design and assessment of reinforced concrete structures

Mitropoulou¹,

Μητροπούλου²

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Ο κύριος στόχος της διατριβής ήταν η ανάπτυξη ενός ολοκληρωμένου πλαισίου για την αξιολόγηση και τον οικονομικό-ασφαλή αντισεισμικό σχεδιασμό κατασκευών. Αυτός ο καθολικός στόχος της διατριβής επετεύχθη μέσω των ακόλουθων βημάτων: (i) Στο πρώτο μέρος της διατριβής πραγματοποιήθηκε αριθμητική βαθμονόμηση ορισμένων από τους πιο δημοφιλείς δείκτες βλάβης που έχουν προταθεί και υιοθετηθεί από πολλούς ερευνητές προκειμένου να προσδιορίσουν το επίπεδο ζημίας κατασκευών από οπλισμένο σκυρόδεμα. (ii) Στο δεύτερο στάδιο της διατριβής πραγματοποιήθηκε αξιολόγηση των περιγραφικών διαδικασιών αντισεισμικού σχεδιασμού σε σχέση με τον συντελεστή συμπεριφοράς που υιοθετείται από τους Ευρωκώδικες και διερευνήθηκε η βέλτιστη επιλογή που οδηγεί στον οικονομικότερο και ασφαλέστερο σχεδιασμό. Επιπροσθέτως έγινε σύγκριση των μεθόδων σχεδιασμού με βάση την επίδοση σε σχέση με τις περιγραφικές μεθόδους σχεδιασμού. Στη συνέχεια, με βάση τους βαθμονομημένους δείκτες βλάβης, διατυπώθηκαν προβλήματα βελτιστοποίησης με στόχο να προσδιοριστεί ο δείκτης βλάβης ή ο συνδυασμός δεικτών βλάβης που αποτελούν την σωστότερη επιλογή προκειμένου να ενσωματωθεί στο πλαίσιο σχεδιασμού που βασίζεται στην επιτελεστικότητα. (iii) Ως επόμενο βήμα της διατριβής ήταν η βελτίωση της διαδικασίας του κόστους κύκλου ζωής όσον αφορά την αξιοπιστία και την υπολογιστική αποδοτικότητά της.. (iv) Ο τελευταίος στόχος της διατριβής ήταν η βελτίωση της διαδικασίας ανάλυσης τρωτότητας σε σχέση με την αξιοπιστία και την υπολογιστική αποδοτικότητα. Η υπολογιστική αποδοτικότητα επετεύχθη μέσω της προτεινόμενης στο πλαίσιο της παρούσης διατριβής προσαυξητικής δυναμικής ανάλυσης με βάση πρόβλεψης νευρωνικών δικτύων η οποία μειώνει τις υπολογιστικές απαιτήσεις κατά μία τάξη μεγέθους.

show abstract

Spectral shape-based assessment of SDOF nonlinear response to real, adjusted and artificial accelerograms

Cited by 74 publications

References 22 publications

Seismic Assessment via EC8 of Modern Heritage Structures

Seismic Assessment via EC8 of Modern Heritage Structures

Eurocode-based seismic assessment of modern heritage RC structures: The case of the Tower of the Nations in Naples (Italy)

Advanced computational methods for seismic design and assessment of reinforced concrete structures

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