Prestressed Concrete Bridges: Design and ConstructionPrestressed concrete decks are commonly used for bridges with spans between 25m and 450m and provide economic, durable and aesthetic solutions in most situations where bridges are needed. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice. Extensively illustrated throughout, this invaluable book brings together all aspects of designing prestressed concrete bridge decks into one comprehensive volume. The book clearly explains the principles behind both the design and construction of prestressed concrete bridges, illustrating the interaction between the two. It covers all the different types of deck arrangement and the construction techniques used, ranging from in-situ slabs and precast beams; segmental construction and launched bridges; and cable-stayed structures. Included throughout the book are many examples of the different types of prestressed concrete decks used, with the design aspects of each discussed along with the general analysis and design process. Detailed descriptions of the prestressing components and systems used are also included. Prestressed Concrete Bridges is an essential reference book for both the experienced engineer and graduate who want to learn more about the subject. |
Contents
Prestressed concrete in bridgeworks | 1 |
1 | 19 |
Introduction | 20 |
Durabilty and detailing | 34 |
4 | 45 |
Prestress force and losses | 67 |
Tendon eccentricity in ducts | 73 |
Shear design | 79 |
Casting of segments | 210 |
Storage and transportation of segments | 218 |
31 | 227 |
Segment erection by the balanced cantilever method | 229 |
Segment erection by the spanbyspan method | 236 |
References | 248 |
15 | 262 |
33333 | 265 |
Concrete properties | 87 |
6 | 97 |
Anchor blisters or blocks | 104 |
7 | 120 |
Analysis of prestressed concrete bridges | 134 |
Contents Input data | 143 |
Slab bridges | 151 |
Beamandslab bridges | 156 |
General arrangement | 160 |
In situ multicell box girder decks | 179 |
In situ singlecell box girder bridges | 190 |
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Common terms and phrases
AASHTO abutment analysis anchor block anchorage applied arrangement balanced cantilever bottom slab box girder bridges box girder decks bridge decks cable-stayed bridges Chapter compression concrete bridges Figure concrete decks Copyright reserved coupler courtesy of Hyder creep dead load deck section deck slab deflections deviator diaphragm DYWIDAG effects erection external tendons falsework flange form traveller formwork friction gantry grout HDPE Highway Highways Agency Hyder Consulting Ltd illustrated in Fig installed internal jack layout lifting longitudinal multi-strand tendons N/mm² pier placed post-tensioned concrete post-tensioned tendons Pre-tensioned strand precast beams Precast segmental box prestress force prestress tendons Prestressed concrete bridges reinforcement is provided Reproduced courtesy seen in Fig segmental box girders Segmental Bridges shown in Fig shrinkage shutters soffit span length span-by-span stage stays steel strength stress structure tensile tensile stresses Thomas Telford top slab torsion transverse typical usually Viaduct voids webs width wires