PRECAST PRESTRESSED SEGMENTAL RAILWAY BRIDGE IN AUSTRALIA

In the last decade most highway grade separation structures consisted of simple span I-beams with a cast-in-place deck slab. Typically, the spans were supported by two end abutments, a central pier, and a pair of intermediate shoulder piers. However, with the new emphasis on safety, the two intermediate piers are no longer permitted. This new regulation coupled with the need for longer spans, means that the standard AASHO-PCI types III and IV beams cannot be used. Nevertheless, it is still possible to use the AASHO-PCI beams on longer spans if the beams are used as segments to be spliced and post-tensioned together at the construction site. The author presents a design procedure for designing such long-span precast segmental bridges. Two fully-worked numerical examples are presented to show the application of the design method and several tables and charts are included to facilitate the design process. (Author)

Availability:
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Corporate Authors:
Prestressed Concrete Institute

205 West Wacker Drive
Chicago, IL United States 60606
Publication Date: 1973-9

Media Info

Features: Appendices; Figures;
Pagination: p. 105
Serial:
- PRECAST/PRESTRESSED CONCRETE INSTITUTE. JOURNAL
- Volume: 18
- Issue Number: 56
- Publisher: Precast/Prestressed Concrete Institute
- ISSN: 0887-9672

Subject/Index Terms

TRT Terms: Bridge construction; Bridge design; Bridge foundations; Bridges; Concrete bridges; Construction; Design; I beams; Posttensioning; Precast concrete; Prestressed concrete bridges; Segmental construction; Splicing; Structural design
Identifier Terms: American Association of State Highway Officials
Old TRIS Terms: Design data; Water prospecting
Subject Areas: Bridges and other structures; Construction; Design; Highways;

Filing Info

Accession Number: 00054759
Record Type: Publication
Files: TRIS
Created Date: Jun 24 1974 12:00AM