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Key terms
Modelling, Seismic Retrofit, Seismic Demands
Bridges are assets that are subject to not only varying loads on a daily basis but are also highly susceptible to seismic loading in the event of an earthquake. Additionally, bridges tend to be post-disaster structures and need to be operational at all times...
Bridge Seismic Assessment
The type and extent of damage that a component will experience is uncertain. Component fragility functions are statistical distributions that indicate the conditional probability of incurring damage at a given value of demand. Fragility functions are assumed to be lognormal distributions...
Key terms
Fragility Curves, Damage Prediction, Risk Assessment
Key terms
Seismic Performance, Infrastructure, Structural Health Monitoring
Bridges are considered one of the most critical components of highway transportation networks, as the closure of a bridge due to partial damage or collapse can disrupt the entire transportation system. A bridge with slight or moderate seismic damage could decrease its serviceability and ability to transport vehicles...
Key terms
Structural Modelling, Mode Shape Curvature, Damage Detection
The mode shape curvature is an efficient technique in identifying damage by using the mode shapes of the structure. The curvature is related to the flexural stiffness of the beam’s cross section. If a crack or other damage is introduced in a structure, it reduces its flexural stiffness (EI) at its cracked section. ...
Key terms
FEMA P-547, Seismic Force, Structural Retrofitting
A considerable number of buildings in North America present a risk of poor performance during an earthquake event as they were constructed prior to seismic design codes or the available code used was immature and presents flaws. discontinuity...
Key terms
Soft Storeys, Seismic Force, Earthquake Risk
A large number of moment frame buildings have been constructed for specific purposes and may contain large area for parking, reception lobbies, etc. These kinds of open spaces void of any infill walls are called soft storey buildings. Storeys with these kinds of open spaces are considered as having stiffness discontinuity...
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