TY - GEN
T1 - Structural health indices for steel truss bridges
AU - Giles, Ryan Kent
AU - Kim, Robin
AU - Spencer, Billie F.
AU - Nathan, M.
AU - Newmark, Anne M.
AU - Bergman, Lawrence A.
AU - Shield, Carol K.
AU - Sweeney, Steven C.
PY - 2011
Y1 - 2011
N2 - Steel bridges represent a significant portion of the nation's aging bridge inventory. The United States Army's inventory has over two hundred steel bridges that are vital to the operation of nearly every Army Installation. The Army regularly inspects their bridges to ensure the continued functionality of the bridges. However, current inspection techniques and schedules may not be able to detect certain defects that could compromise bridge integrity. To supplement current inspection standards, the US Army Engineer Research and Development Center (ERDC), has contracted to install a structural health monitoring (SHM) system on the historic steel truss Government Bridge at the Rock Island Arsenal. ERDC envisions a system that measures strain, acceleration, tilt, and electrical resistance to determine the bridge's structural health. Research into the usefulness of the Damage Locating Vector (DLV) method, and the damage indices that the method calculates, in detecting corrosion damage has been conducted. Numerical studies on a finite element model of the Government Bridge have indicated that the DLV method has potential as a damage detection algorithm on such a large structure. Laboratory experiments using corroded members in a model truss have additionally shown that the DLV can be used to monitor corrosion induced damage.
AB - Steel bridges represent a significant portion of the nation's aging bridge inventory. The United States Army's inventory has over two hundred steel bridges that are vital to the operation of nearly every Army Installation. The Army regularly inspects their bridges to ensure the continued functionality of the bridges. However, current inspection techniques and schedules may not be able to detect certain defects that could compromise bridge integrity. To supplement current inspection standards, the US Army Engineer Research and Development Center (ERDC), has contracted to install a structural health monitoring (SHM) system on the historic steel truss Government Bridge at the Rock Island Arsenal. ERDC envisions a system that measures strain, acceleration, tilt, and electrical resistance to determine the bridge's structural health. Research into the usefulness of the Damage Locating Vector (DLV) method, and the damage indices that the method calculates, in detecting corrosion damage has been conducted. Numerical studies on a finite element model of the Government Bridge have indicated that the DLV method has potential as a damage detection algorithm on such a large structure. Laboratory experiments using corroded members in a model truss have additionally shown that the DLV can be used to monitor corrosion induced damage.
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U2 - 10.1007/978-1-4419-9316-8_38
DO - 10.1007/978-1-4419-9316-8_38
M3 - Conference contribution
AN - SCOPUS:79958113778
SN - 9781441993151
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 391
EP - 398
BT - Civil Engineering Topics - Proceedings of the 29th IMAC, a Conference on Structural Dynamics, 2011
PB - Springer New York LLC
ER -