AASHTO LRFD BRIDGE

AASHTO LRFD BRIDGE

1. 1. Introduction

   • 1.1 Scope of the specifications
     • No railway, rail-transit or public utilities
   • 1.2 Definitions
   • 1.3 Design Philosophy
     • Designed to achieve constructibility, safety and serviciability.
     • LRFD, Service Limit State, Fatigue, Strength Limit State, Ductility, Redundancy

2. 2. General Design and Location Features

   • 2.1 Scope
   • 2.2 Definitions
   • 3. Location Features
     • Economic, Engineering, social, and environmental concerns, maintanance, inspection
   • 2.4 Foundation Investigation
     • Durability, Self Protecting Measures
   • 2.5 Design Objectives
     • Ecuations for Span-to-Depth Ratios and Traditional Minimum Depths for Constant Depth Superstructures
   • 2.6 Hydrology and Hydraulics
     • Evaluation of bridge design alternatives shall consider stream stability, backwater, flow distribution, stream velocities, scour potential, flood hazards, tidal dynamics where appropriate and consistency with established criteria for the National Flood Insurance Program.
   • 2.7 Bridge Security
     • For bridges critical, a formal vulnerability study should be conducted, and measures to mitigate the vulnerabilities should bd incorporated into the design.

3. 3. Loads and Loads Factors

   • Load Factors and combinations, Permanent loads, Live loads, Water Loads, Wind Load, Ice Load, Eartquake Effects, Earth Preassure, Friction Forces, Vessel Collision, Blast Loading

4. 4. Structural Analysis and Evaluation

   • Acceptable Methods
   • Mathematical Modeling
   • Static Analysis
   • Dynamic Analysis
   • Analysis By Physical Models

5. 5. Concrete Structures

   • Material Properties
   • Limit States
   • Design Considerations
   • Design For Flexural and Axial Force Effects
   • Shear and Torsion
   • Prestressing
   • Details Of Reinforcement
   • Development and splices of reinforcement
   • Durability
   • Specific Members
   • Provissions For Structure Types

6. 6. Steel Structures

   • Materials
   • Limit States
   • Fatigue and Fracture Considerations
   • General Dimension and Detail Requirements
   • Tension Members
   • Compression Members
   • I Section Flexural Members
   • Box Section Flexural Members
   • Miscellaneous Flexural Members
   • Connections and splices
   • Provisions for structure types
   • Piles
   • Provisions for seismic design

7. 7. Aluminum Structures

8. 8. Wood Structures

9. 9. Deck and Deck Systems

   • General Design Requirements
   • Limit States
   • Analysis
   • Concrete deck slabs
   • Metal Decks
   • Wood Decks and Deck Systems

10. 10. Foundations

    • Soil and rock properties
    • Limit States and resistance factors
    • Spread Footings
    • Driven Piles
    • Drilled Shafts
    • Micropiles

11. 11. Abutment, Piers and Walls

    • Soil Properties and materials
    • Limit states and resistance factors
      • Prefabricated Modular Walls
    • Abutments and conventional retaining walls
    • PIERS
    • Nongravity cantilevered walls
    • Anchored Walls
    • Mechanically Stabilized Earth Walls

12. 12. Buried Structures and Tunnel Liners

13. 13. Railings

14. 14. Joints and Bearings

    • Movements and loads
    • Bridge Joints
    • Requierements for bearings
    • Special Design Provisions For Bearings
    • Load Plates And Anchorage For Bearings
    • Corrosion Protection

15. 15. Designs of Sound Barriers Index