| Description |
xii, 83 leaves : illustrations, photographs ; 29 cm |
| Summary |
"The spacing of connectors in compression elements of built-up sections is evaluated. Previous research developments by Muzaffer Yener and Larry Luttrell are compared to 82 single flute built-up hat sections with and without edge stiffened cover plates. All test sections were tested in simple beam setups with cover plates in compression. The buckling behavior of edge stiffened cover plates and cover plates without edge stiffeners is discussed. The effective length factor and plate buckling coefficient are determined from the test results. The test results showed poor correlation with Luttrell's and Yener's research developments. The current research validates the AISI Design Specification spacing criteria which restricts spacing to a value that will prevent any separation of the cover plate from the hat between connectors. This is, however, very conservative when applied to section in bending and yields very small spacings. The spacing of the connectors can be increased beyond that required by Section D 1.2 allowing the cover plate to buckle between connectors. The capacity of the hat sections is not diminished due to the onset of buckling in the cover plate. The hat section will continue to carry additional load because of the post-buckling strength provided by the cover plate. A computational model was developed for determining the bending capacity of single-fluted sections with cover plates that do not have edge stiffeners. The results of the investigation are presented and recommendations are made for design of single-flute cross sections in bending with cover plates without edge stiffeners"--Abstract, leaf iii. |
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