Residual life of earthquake damaged structures

The problem of implied margin of safety in seismic design codes is examined — with particular reference to the Indian standard IS-1893. A framework for estimation of available margin of safety for earthquake resistant design is developed based on serviceability limit state using linear random vibrat...

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Bibliographic Details
Published in:Soil dynamics and earthquake engineering (1984) 2021-06, Vol.145, p.106694, Article 106694
Main Authors: Majhi, Deepti Ranjan, Shrikhande, Manish
Format: Article
Language:English
Subjects:
Building codes
Design life
Earthquake damage
Earthquake resistance
Earthquake resistant design
Earthquakes
Geographical locations
Limit states
Maintenance
Margin of safety
Random vibration
Residual life
Retrofitting and rehabilitation
Safety
Safety engineering
Seismic activity
Seismic design
Seismic zones
Structural damage
Structural degradation
Structural design
Structural reliability
Vibration
Zonation
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Summary:The problem of implied margin of safety in seismic design codes is examined — with particular reference to the Indian standard IS-1893. A framework for estimation of available margin of safety for earthquake resistant design is developed based on serviceability limit state using linear random vibration theory. Inadequacy of seismic zonation in ensuring the objective of uniform level of safety within each zone is shown with reference to differences in the available margins of safety for buildings designed for similar seismic zones but in distant geographical locations. Subsequently, the proposed reliability framework is extended to the problem of estimating residual life of earthquake damaged structures and also for developing a decision framework for planning of maintenance and repairs.
ISSN:0267-7261
1879-341X
DOI:10.1016/j.soildyn.2021.106694