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Bridge Seismic Assessment

by Ardalan Sabamehr, Ph.D.

 

28/08/19

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...

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Bridge Seismic Assessment

Fragility Curves Social Media.png

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

Fragility Curves

by Ardalan Sabamehr, Ph.D.

 

17/01/19

Seismic Performance of Highway Bridges

by Rania Bedair, Ph.D. P.Eng.

 

15/11/18

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...

Mode Shape Curvature

by Ardalan Sabamehr, Ph.D.

 

30/10/18

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. ...

Seismic Retrofit

by Rania Bedair, Ph.D. P.Eng.

 

14/08/18

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...

Soft Storey Identification Using Storey Drift

by Ardalan Sabamehr, Ph.D.

 

14/08/18

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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