Analytical evaluation of structural component limit state probabilities

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Xavier Romão (Author) FEUP; João Paulo Miranda Guedes (Author) FEUP; Aníbal Costa (Author) FEUP; Raimundo Delgado (Author) FEUP

Journal

Title: Bulletin of Earthquake Engineering

Vol. 6

Pages: 309-333

ISSN: 1570-761X

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Other information

Authenticus ID: P-003-ZJD

DOI: 10.1007/s10518-007-9056-z

Abstract (EN): Probabilistic seismic assessment requires extensive computational effort resulting from variability both in input ground motions and mechanical properties. Nonetheless, such methodologies are of considerable importance, namely for pre-earthquake disaster planning or development of retrofitting programs. A framework for the analytical definition of closed form expressions for exceedance probabilities of structural component limit states, defined by limit values of structural response parameters, is proposed herein. The definition of these expressions is based on the probabilistic representation of the ground motion intensity and on the establishment of suitable expressions characterizing the evolution of structural demand with increasing earthquake intensity. Distinction is made between deformation-based and force-based structural parameters in the definition of such relations. Within the proposed framework, the limit states are defined by single deterministic thresholds of structural response quantities at the component level, as defined in structural codes. Different approaches are also discussed to account for the randomness of the mechanical properties and ground motion input within the proposed methodology. An application of the assessment of different limit state probabilities of members from a reinforced concrete building is presented, for which limit states and limit state capacities are defined according to the upcoming Part 3 of the Eurocode 8. Although the presented application only deals with member chord rotation and shear force limit state probabilities, the proposed methodology can be generalized to other deformation-based and force-based structural parameters.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 25