College of Engineering

CEN Seminar

Date(s): 11/2/2012 12:00 PM - 11/2/20121:00 PM
Location: Textile Building, Room 101E
Contact: Professor Mazdak Tootkaboni mtootkaboni@umassd.edu 508-999-8465


Civil and Environmental Engineering (CEN) Seminar Series

DATE and TIME: Fri, Nov 2, 2012, 12pm – 1pm

PLACE: Textile Building, Room 101E (College of Engineering Conference Room)

SPEAKER: Dr. Alice Alipoure, UMass Amherst

TITLE: Life-Cycle Performance and Cost Assessment of Aged Transportation Network in High Seismic Areas

Abstract:

Civil infrastructure systems such as highway transportation networks are tied up, directly or indirectly, with every country’s economy in a major way. The state of civil infrastructure has significant impacts on the nation’s safety and quality of living. Among various infrastructure components, highway bridges are key elements of any transportation network and huge money is spent every year for their maintenance. This cost is required mainly due to the fact that highway bridges are aging, rapidly deteriorating, and becoming increasingly vulnerable to catastrophic failure during natural or man-made hazards. In the current study, performance of reinforced concrete highway bridges is evaluated during seismic events while they have been continuously exposed to various environmental stressors, such as carbonation and the attack of chloride ions. To assess the local and global structural degradation, an inventory of typical bridges with diverse structural attributes is developed. The extent of capacity loss is estimated using rigorous finite element approaches and the obtained results are used to optimize the total life cycle cost of bridges. The effects of deterioration of individual bridges on the functionality of the entire transportation network are examined through a case-study analysis covering the greater Los Angeles area. Depending on the network performance, various inspection and maintenance strategies are investigated using a multi-hazard framework to ensure the safety of bridges while reducing the associated costs.

Dr. Alipour is an Assistant Professor at the Department of Civil and Environmental Engineering of University of Massachusetts (UMass) Amherst. Prior to joining to the UMass, she was a postdoctoral scholar at the University of California, Irvine, where she received her Ph.D. degree in Civil Engineering (2010). Her research interests include probabilistic performance evaluation of structural systems subjected to multiple hazards, risk mitigation strategies for civil infrastructure systems under extreme conditions, and life-cycle engineering and management. She is the recipient of Young Engineer award from the Orange County Engineering Council (2012) and NSF ENHANCE fellowship from the National Science Foundation (2012).




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