Extending displacement-based earthquake loss assessment (DBELA) for the computation of fragility curves

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Silva, V (Author) Other; Crowley, H (Author) Other; Pinho, R (Author) Other; Varum, H (Author) FEUP

Journal

Title: Engineering Structures

Vol. 56

Pages: 343-356

ISSN: 0141-0296

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 26 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering

Other information

Authenticus ID: P-008-BHB

DOI: 10.1016/j.engstruct.2013.04.023

Abstract (EN): This paper presents a new procedure to derive fragility functions for populations of buildings that relies on the displacement-based earthquake loss assessment (DBELA) methodology. The recent developments in this methodology are also presented herein, such as the development of new formulae for the calculation of the yield period or the consideration of infilled frame structures. In the fragility method proposed herein, thousands of synthetic buildings have been produced considering probabilistic distributions describing the variability in their geometrical and material properties. Then, their nonlinear capacity has been estimated using the DBELA method and their performance against a large set of ground motion records has been calculated. Global limit states are used to estimate the distribution of buildings in each damage state for different levels of ground motion, and a regression algorithm is applied to derive fragility functions for each limit state. The proposed methodology is demonstrated for the case of ductile and non-ductile Turkish reinforced concrete buildings with and without masonry infill walls, and compared with results obtained using nonlinear dynamic procedures and with the results from previous studies.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14