Guidelines for the Load and Resistance Factor Design and Rating of Riveted and Bolted Gusset-Plate Connections for Steel Bridges (2013) / Chapter Skim
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3 EXECUTIVE SUMMARY The collapse of the I-35W Bridge in Minneapolis, MN, on August 1, 2007, was attributed to a design error that underspecified the thickness of steel gusset plates connecting the truss members at a particular joint. Certainly the heightened awareness of an Interstate bridge collapse prompted national attention to the design and load rating of gusset plates.
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From page 6... ...
4 nonlinear material and geometric properties of the gusset plate were necessary along with initial geometric imperfections. The robust finite element modeling technique was applied to a parametric study that increased the breadth and depth of studied connection geometries over the experimental study.
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