Ductile Analysis of Concrete Bridges for Extreme Events Workshop
Course Description:
This one day structural engineering seminar is sponsored by the Federal Highway Administration in cooperation with your local State Department of Transportation. The seminar will provide engineers the fundamentals of inelastic structural analysis. Inelastic structural analysis, or pushover analysis, has become a common procedure in current structural engineering practice, and the AASHTO Guide Specifications for LRFD Seismic Bridge Design explicitly requires pushover analysis for Seismic Design Category (SDC) D bridges. Similarly, the 2006 FHWA Seismic Retrofitting Manual for Highway Structures adopted pushover analysis in evaluation method D2 for bridges of Seismic Retrofit Categories (SRC) C and D to assess bridge seismic performance. Inelastic structural analysis can be used for bridges subjected to vessel or vehicular collision and to quantitatively evaluate bridge system redundancy.
The course will introduce the process of performing inelastic analysis, and provide step-by-step examples to demonstrate how to quantitatively determine member failure modes and system displacement capacity. The training will be useful to engineers who perform seismic analysis and design, as well as to those who are interested in the inelastic structural analysis for non-seismic loadings.
Learning Outcomes:
By the end of this course, participants should be able to:
Target Audience:
The target audience is structural design engineers who are responsible for designing highway bridges.
To Schedule, contact:
Jeffrey Ger, Senior Structural Engineer, (202) 868-3788, Jeffrey.Ger@dot.gov
Instructor Bios:
Jeffrey Ger, P.E., is a Senior Structural Engineer with the Federal Highway Administration's Resource Center in Atlanta, Georgia, and was the FHWA Division Bridge Engineer in Florida. Before joining FHWA, he worked with the Missouri Department of Transportation where he was extensively involved with projects for the seismic retrofitting and strengthening of bridges in Missouri. He received his Ph.D. in Civil Engineering from the University of Missouri-Rolla. He has published more than 50 technical papers in structural engineering. In 2011, he published a book entitled "Seismic Design Aids for Nonlinear Pushover Analysis of Reinforced Concrete and Steel Bridges". Dr. Ger was appointed as one of the seven members of US Transportation Infrastructure Reconnaissance Team traveling to Chile in April 2010, to assess the bridge damage condition due to the February 27, 2010, Chile earthquake.
Derek Soden, P.E., is a Senior Structural Engineer with the Federal Highway Administration's Resource Center in Denver, Colorado. As a member of the Structures Technical Services Team, Derek provides technical assistance and training in the areas of bridge design, construction, and inspection. From 2009 to 2012, Derek was the Assistant Division Bridge Engineer for FHWA's Florida and Puerto Rico Divisions. From 1998 to 2009, Derek was a design engineer for the Alaska Department of Transportation where he developed designs for new bridges and bridge repair, rehabilitation and seismic retrofit projects throughout the state. He also provided technical support on bridge construction issues, specification development, and the Bridge Section's AASHTO technical committee work in seismic and foundation engineering. Derek received his B.S. in Civil Engineering in 1997 from the University of Alaska in Fairbanks (where he was born and raised) and his M.S. in Structural Engineering in 1998 from the University of California, Berkeley.
Email: Derek.Soden@dot.gov Tel: (720) 413-7436
Registration Fee
The course is free of charge to those attending, but is offered on a 'reservation-only' basis and limited to seat availability.
Seminar Agenda
8:00 am Welcome, Introductions
8:30 am Column failure modes and bridge design limit states
9:00 am Moment-curvature analysis
9:45 am Break
10:00 am Column Failure mode measurements
10:30 am Plastic hinge length and moment-rotation relationship
(noon) Lunch (on-your-own)
1:00 pm Inelastic member stiffness matrix formulation
2:00 pm Inelastic structural analysis by matrix method
2:45 pm Break
3:00 pm Inelastic (pushover) analysis to determine displacement capacity of bridge bents
4:30 pm Adjourn