Buildings 2012, 2(3), 271-282; doi:10.3390/buildings2030271
Article

Innovative Procedures to Assess Seismic Behaviour of Existing Structures by Means of Non Linear Static Analysis: Polar Spectrum and Capacity Domains

* email and
Received: 3 April 2012; in revised form: 11 June 2012 / Accepted: 25 June 2012 / Published: 18 July 2012
(This article belongs to the Special Issue Earthquake Resistant Buildings)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In the last few years, the need to evaluate the seismic performances of buildings on sustaining strong motion has encouraged the development of simplified non-linear static analyses. Several procedures are available today to assess the behavior of plane-frame systems or plan-regular framed buildings suitable for engineering purposes. Less accurate procedures are instead available for irregular structures. This study introduces new tools to assess the seismic performance of irregular structures by using capacity domains and polar spectra. In particular, the capacity domains, plotted in terms of base shear and node control displacements and obtained by means of static non-linear analyses, lead to the evaluation of the direction of least seismic capacity of the investigated structure. The polar spectrum, instead, leads to taking into account the directivity and site effects of seismic events. In particular, the polar spectrum represents the spectral seismic response evaluated for different in-plan directions.
Keywords: non linear static analysis; capacity domains; polar spectrum
PDF Full-text Download PDF Full-Text [536 KB, uploaded 18 July 2012 15:11 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Petti, L.; Marino, I. Innovative Procedures to Assess Seismic Behaviour of Existing Structures by Means of Non Linear Static Analysis: Polar Spectrum and Capacity Domains. Buildings 2012, 2, 271-282.

AMA Style

Petti L, Marino I. Innovative Procedures to Assess Seismic Behaviour of Existing Structures by Means of Non Linear Static Analysis: Polar Spectrum and Capacity Domains. Buildings. 2012; 2(3):271-282.

Chicago/Turabian Style

Petti, Luigi; Marino, Ivana. 2012. "Innovative Procedures to Assess Seismic Behaviour of Existing Structures by Means of Non Linear Static Analysis: Polar Spectrum and Capacity Domains." Buildings 2, no. 3: 271-282.

Buildings EISSN 2075-5309 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert