Seminar- Evaluation and Repair of Deteriorated Steel Bridge Girders

Where: 
Mason Building Room 5134
When: 
Monday, February 24, 2020 - 16:30
Dr. Matthew Hebdon
Assistant Professor of Civil & Environmental Engineering
Virginia Tech
 
Abstract:

Over 40% of the bridges in the US are older than 50 years. These critical pieces of our transportation infrastructure require maintenance and evaluation throughout their lifespan to meet the strenght and service demands in harsh environmental conditions. Corrosion is one of the primary sources of long-term bridge deterioration for both steel and concrete structures and can have a cascading affect since components are interconnected physically and structurally. For example, a failure of a deck joint can result in excessive moisture reaching the girders below, leading to corrosion along the bottom flanges and webs of steel beams in the bearing areas. Over time, significant cross-sectional reduction can occur in different component regions such as the web and bottom flange. the ability of members to support vehicular loads, sometimes greater than their intended design load, can be challenging to quantify and evaluate for engineers as well as difficult to repair for brdige owners. This presentation will discuss ongoing research at Virginia Tech intended to better understand the capacity of corroded steel girder cross-sections, as well as methos to repair deteriorated girders using carbon fiber reinforced polymers (CFRP).

Biography:

Dr. Matthew H. Hebdon, Ph.D., P.E., is an Assistant Professor in the Charles E. Via, Jr. Department of Civil & Environmental Engineering at Virginia Tech. He received his doctorate in Civil Engineering in 2015 from Purdue University. Prior to this, he earned a master's and a bachelor's degree in civil and environmental engineering from Utah State University in 2005. He worked as a structural design engineer at Sargent Engineers, Inc. from 2005 until 2010

His primary research areas include repairs and rehabilitation of bridges to extend their service life, corrosion behavior of bridge steels, internally redundant behavior of buildt-up steel members, fatigue and fracture evaluation of steel structures, brdige monitoring and testing, historical fabrication methods and materials, and large-scale testing of structures. Hebdon actively participates on committees for AASHTO, AISC, AISI, AREMA, and TRB.