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Title : Minneapolis I-35W Bridge Collapse – Engineering Evaluations and Finite Element Analyses
Company : SIMULIA
File Name : minneapolis-i35w-bridge-collapse-evaluations-fea-2010.pdf
Size : 24993
Type : application/pdf
Date : 09-Jul-2011
Downloads : 2

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The National Transportation Safety Board (NTSB) investigates accidents to identify the probable cause and to make recommendations that would prevent similar accidents. Following the collapse of the I-35W bridge in Minneapolis on August 1, 2007, the NTSB worked with the Federal Highway Administration, the Minnesota Department of Transportation and other parties with information and expertise, including SIMULIA Central, to determine the circumstances that contributed to the collapse of the bridge, completing the investigation in 15 months. The NTSB concluded that the collapse of the bridge was caused by the inadequate load capacity of gusset plates used to connect the truss members, as a result of an error by the bridge design firm, Sver-drup & Parcel and Associates, Inc. The loading conditions included a combination of (1) substan-tial increases in the weight of the bridge caused by previous bridge modifications, and (2) the traf-fic and concentrated construction loads on the bridge on the day of the collapse. Evidence from the collapsed bridge structure, engineering evaluations of the design, and results from the finite element analyses used to support the investigation are reviewed.
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