JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

To impart knowledge on the behavior and design aspects of various types of

bridges.

Course Outcomes

The learner will be able to analyze and design of different types of bridges.

UNIT - I

Concrete Bridges: Introduction-Types of Bridges-Economic span length-Types of loading-Dead load- live load-Impact Effect-Centrifugal force-wind loads-Lateral loads-Longitudinal forces-Seismic loads- Frictional resistance of expansion bearings-Secondary Stresses-Temperature Effect-Erection Forces and effects-Width of roadway and footway-General Design Requirements.

UNIT - II

Solid slab Bridges: Introduction-Method of Analysis and Design.

UNIT - III

Girder Bridges: Introduction-Method of Analysis and Design-Courbon's Theory, Grillage analogy

UNIT - IV

Pre-Stressed Concrete Bridges: Basic principles-General Design requirements-Mild steel reinforcement in prestessed concrete member-Concrete cover and spacing of pre-stressing steel- Slender beams-Composite Section-Propped-Design of Propped Composite Section-Unproped composite section-Two-stage Prestressing-Shrinking stresses-General Design requirements for Road Bridges.

UNIT - V

Analysis of Bridge Decks:Harmonic analysis and folded plate theory-Grillage analogy- Finite strip method and FEM. Sub-srtucture of bridges: Substructure- Beds block-Piers- Pier Dimensions- Design loads for piers- Abutments- Design loads for Abutments.

TEXT BOOKS:

• 1. Essentials of Bridge Engineering by Johnson Victor, Oxford & IBH
• 2. Design of Bridges by N. KrishnaRaju, Oxford & IBH

REFERENCES

• 1. Design of Concrete Bridges by M.G. Aswani, V.N. Vazirani and M.M. Ratwani.
• 2. Bridge Deck Behaviour by E.C. Hambly.
• 3. Design of Bridges by V.V. Sastry, Dhanpat Rai & Co
• 4. Concrete Bridge Design and Practice by V.K. Raina.
• 5. Design of Bridge Structures by Jagadeesh & Jayaram, PHI learning Pvt. ltd.
• 6. IRC: 112, 2011, Code of Practice for Concrete Road Bridges.