Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Computer‐Aided Design of Prestressed Concrete Cellular Bridge Decks
Abstract: This paper illustrates the application of an effective optimization procedure for the design of prestressed concrete cellular bridge decks consisting of single‐ and two‐cell box girders or voided slab systems. An approximate live load moment analysis using the finite‐strip method and finite‐difference techniques that determines moment sensitivities to changes in the deck depth and flange thickness is proposed for box girder decks. The optimization process is much simplified by eliminating the need of finite‐strip reanalysis at each iteration. The optimal design is formulated as a nonlinear programming problem and solved by the projected lagrangian method. The resulting solutions may be used as preliminary designs for short‐ and medium‐span highway bridges, for which cellular decks represent competitive solutions. Optimization results show that voided slab decks are more economical than box girder decks for the short span range and wide decks, and single‐cell box girders are a cost‐effective alternative for medium span range and narrow decks.
Computer‐Aided Design of Prestressed Concrete Cellular Bridge Decks
Abstract: This paper illustrates the application of an effective optimization procedure for the design of prestressed concrete cellular bridge decks consisting of single‐ and two‐cell box girders or voided slab systems. An approximate live load moment analysis using the finite‐strip method and finite‐difference techniques that determines moment sensitivities to changes in the deck depth and flange thickness is proposed for box girder decks. The optimization process is much simplified by eliminating the need of finite‐strip reanalysis at each iteration. The optimal design is formulated as a nonlinear programming problem and solved by the projected lagrangian method. The resulting solutions may be used as preliminary designs for short‐ and medium‐span highway bridges, for which cellular decks represent competitive solutions. Optimization results show that voided slab decks are more economical than box girder decks for the short span range and wide decks, and single‐cell box girders are a cost‐effective alternative for medium span range and narrow decks.
Computer‐Aided Design of Prestressed Concrete Cellular Bridge Decks
Lounis, Z. (Autor:in) / Cohn, M. Z. (Autor:in)
01.01.1995
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Computer-Aided Design of Prestressed Concrete Cellular Bridge Decks
| Online Contents | 1995
Interactive Computer Aided Analysis of Simply Supported Prestressed Concrete Bridge Decks
| British Library Conference Proceedings | 2001
Design Procedures for Prestressed Concrete Bridge Decks
| NTIS | 1985
| British Library Conference Proceedings | 2001
Concentrated load on prestressed concrete bridge decks
| TIBKAT | 1955