|Project Name:||Steel Suspension Bridge Vulnerability and Countermeasures|
Office of Infrastructure Research and Development |
|Team:||Hazard Mitigation Team|
Infrastructure Research and Technology Strategic Plan and Roadmap|
|Project Description:||This is a cooperative effort between the Federal Highway Administration, the Department of Homeland Security, and the Army Corps of Engineers. The study consists of the physical testing of steel suspension bridge elements – constructed for the test program, or obtained from structures in the field – subjected to several types of simulated attack loadings. Two important element of this program are to: (1) Calibrate the vulnerability of older, partially deteriorated materials compared to modern materials. (2) Determine, in detail, material and design variations that have the greatest effects on countermeasure performance. Both will influence the continuing improvement of mitigation measures in this and in related studies.|
|Start Date:||July 12, 2010|
|End Date:||July 12, 2015|
The key project objectives are:
(1) Calibrate for variations in component materials analytical predictions of bridge component behavior under attack loadings.
(2) Calibrate the predicted performance of currently used mitigation measures under these bridge material variations.
(3) Test and evaluate mitigation materials and retrofit hardware now under development.
|Test Methodology:||Physical testing consists of explosive/cutting tests and analytical studies on large- to full-scale steel suspension bridge elements, their connections, and where practical, assembled groups of bridge elements. Attack methods include the use of standoff charges (e.g. vehicle bombs), hand-emplaced charges, and mechanical cutting.|
|Expected Benefits:||The expected benefit is that American bridges will be able to survive a terrorist attack.|
Security and Emergencies|
Bridges and other structures