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Ritz-Based Static Analysis Method for Fiber Reinforced Plastic Rib Core Skew Bridge Superstructure |
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| Authors: | Amjad J. Aref Sreenivas Alampalli Yihong He |
| Affiliation: | 1Associate Member, ASCE 2Member, ASCE 31Asst. Prof., Dept. of Civ., Struct. and Envir. Engrg., The State University of New York at Buffalo, Buffalo, NY 14260. 42Head, Struct. Res., New York State Dept. of Transp., Albany, NY 12232. 53Grad. Res. Asst., Dept. of Civ., Struct. and Envir. Engrg., The State University of New York at Buffalo. |
| Abstract: | A Ritz-based static analysis procedure is described for fiber-reinforced plastic, skew bridge superstructure, or deck, with a parallel grid core. This is a simplified analysis method based on a transformed plate formulation and the classical Ritz method. The rib core bridge superstructure, or deck, is idealized as a homogeneous, orthotropic skew plate to which the Ritz method is applied to discretize the resultant, equivalent orthotropic skew plate. Three laminated skew plate examples are presented; the results are compared with finite-element solution to verify the validity of the simplified method. A practical demonstration of a rib core skew bridge superstructure is investigated using the simplified method. The procedure provides a useful analysis tool that can be used in the preliminary design stage without the use of finite-element analysis. |
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