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Structural Engineering and Mechanics Volume 34, Number 2, January30 2010, pages 213-229 DOI: http://dx.doi.org/10.12989/sem.2010.34.2.213 |
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Evaluation of static response in stress-ribbon concrete pedestrian bridges |
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Leonidas T. Stavridis
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| Abstract | ||
| An analytical method is proposed for the evaluation of the static response of a prestressedribbon concrete pedestrian bridge, which may also be applied for the roofing of large areas. On the basis of an established analogy with a suspension bridge system, a procedure is presented for the prestressedribbon direct analysis, leading to the introduction of two dimensionless parameters as governing factors of the design, namely the thinness and the prestressing steel ratio. The exposed procedure, applied by a simple computer program, allows a quick evaluation of the response and permits the investigation of the influence of the aforementioned parameters on it, by means of comprehensive diagrams. The presented diagrams may be directly used for the preliminary design of a pedestrian bridge of this type, for the whole practical range of span lengths. A design example is also included, showing the applicability of the proposed procedure. | ||
| Key Words | ||
| stress-ribbon; bridge; suspension bridge; static analysis; design. | ||
| Address | ||
| Leonidas T. Stavridis: Structural Engineering, National Technical University of Athens, Vas. Sofias 100-11528 Athens, Greece | ||