Importance of "Heuristics" in Suspension Bridge Engineering and 1915 Çanakkale Bridge
| Auteur(s): |
Ersin Arioğlu
|
|---|---|
| Médium: | chapitre de livre |
| Langue(s): | anglais |
| Publié dans: | Developments in International Bridge Engineering |
| Page(s): | 19-41 |
| DOI: | 10.1007/978-3-030-59169-4_2 |
| Abstrait: | Suspension bridges can be regarded as masterpieces of the engineering profession. Although they are conceptually clear cut 5-piece load-bearing systems which are highly hyperstatic and their sizes are enormous. They undergo large displacements under loads, have nonlinear behavior and are sensitive to horizontal loads, especially wind loads. Suspension bridges are the most elegant, aesthetic and relatively economic structures of our civilization. The three decision methods to solve problems of engineers are “logic”, “probability” and “intuition”. Intuition, namely “heuristics” can be a vital influence in their decisions. Especially bridge designs are based on mathematical models, which take into account known patterns of physical behavior, but there are potentially a good many unknowns and uncertainties, which means heuristics is very useful and even required for short cut of the calculations and analysis. As the numbers of suspension bridges are increasing, a quite large database is becoming available for studying suspension bridges. At the same time, there has been a challenge to span longer distances, pushing the envelope of the engineering experience into new territory. This paper explores practical mathematical expressions obtained through regression analyses to predict easily key design parameters of long span suspension bridges such as main geometric dimensions, material quantities/qualities and dynamic properties for preliminary design calculations and estimations in order to satisfy. A large design parameter database matrix for 20 long span suspension bridges was collected to bring out heuristic approximations through regression analyses. Finally, these regression models are used to examine the design parameters of 1915 Çanakkale Bridge Project, which will break the longest span record with a main span length of 2023 m and the tallest tower record with 318 m (IP Point). It was observed that the dimensions, mass distributions and material qualities selected for the design of 1915 Çanakkale Bridge agree with the findings of this study. |
| Mots-clé: |
durabilité pont suspendu
|
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sur cette fiche - Reference-ID
10658916 - Publié(e) le:
24.02.2022 - Modifié(e) le:
29.05.2022
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