JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Structural Analysis I &II, Reinforced Concrete Design

Course Objectives:

• 1. To understand the bridge hydrology
• 2. To list the components of bridge substructure, superstructure and types of bearings
• 3. To understand the codal provisions for loading and design standards of bridges
• 4. To design RC and PSC bridges

Course Outcomes

After completion of the course, students should be able to

• 1. Determine flood discharge, waterway, economic span
• 2. Select type of super structure, sub structure and the bearings
• 3. Calculate the various types of loads acting on the bridges
• 4. Design the Slab bridges, Girder bridges and Prestressed Concrete 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. Solid slab Bridges: Introduction-Method of Analysis and Design.

UNIT - II

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

UNIT - III

Box Culverts: - Single Cell Box Culvert – Design Loads, Design Moments, Shears and Thrusts. Design of Critical sections.

UNIT - IV

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

UNIT - V

Sub-structure of bridges: Substructure- Beds block-Piers- Pier Dimensions- Design loads for piers- Abutments- Design loads for Abutments.

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. Concrete Bridge Design and Practice by V. K. Raina.
• 4. Essentials of Bridge Engineering by Johson Victor, Oxford & IBH
• 5. Design of Bridges by V. V. Sastry, Dhanpat Rai & Co. M.Tech in STRUCTURAL ENGINEERING I YEAR II – SEMESTER