Rigidity Selection for Mid-Tower of Three Tower Suspension Bridge
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Détails bibliographiques
| Auteur(s): |
Jing Ruan
Zhaoxiang Feng Jianchi Zhong |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008 | ||||
| Publié dans: | IABSE Congress Chicago 2008 | ||||
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| Page(s): | 578-579 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2008 | ||||
| DOI: | 10.2749/222137908796293749 | ||||
| Abstrait: |
Comparing with normal two-tower suspension bridges, the whole stiffness of three-tower suspension bridges are relatively small，while the ratios of the deflection to span of these structures are larger. The mid-tower stiffness of three-tower suspension bridge has great influence on the mechanical behaviour of the whole bridge due to inner characteristics of this kind of bridges. Basing on some model experiments and related design specification, some design restrictions of three-tower suspension bridge, such as the deflection of the main span and the anti-slipping safety factor between the main cable and saddle of the mid-tower, are presented. Considering these practical restrictions and analytical results on the influence of the stiffness of the mid-tower to the whole structures, the paper shows the reasonable range of mid-tower stiffness. A proper structural style satisfying all of these restrictions is proposed at the end of this paper. |
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