Load and Resistance Factor Design (LRFD) for Highway Bridge Superstructures - Reference Manual

This document presents the theory, methodology, and application for the design and analysis of both steel and concrete highway bridge superstructures. The manual is based on the AASHTO LRFD Bridge Design Specifications, Seventh Edition, 2014, with Interim Revisions through 2015. Design examples and commentary throughout the manual are intended to serve as a guide to aid bridge engineers with the implementation of the AASHTO LRFD Bridge Design Specifications. This Reference Manual consists of eight chapters. Chapter 1 provides an introduction to load and resistance factor design (LRFD), including an overview of the LRFD design philosophy and a description of the various LRFD limit states. Chapter 2 provides general information about location features and design objectives, as well as a brief overview of Accelerated Bridge Construction. Chapter 3 presents loads and load factors, including design criteria for common bridge loads, as well as load factors used for various LRFD load combinations. Chapter 4 provides a general summary of structural analysis, including general analysis considerations, dead load analysis, live load analysis, and various methods of analysis. Chapter 5 provides valuable information for the design of concrete girder superstructures, including preliminary design decisions, flexural design of prestressed I-girders, design for shear and torsion, prestressing, and reinforcement details. Similarly, Chapter 6 provides valuable information for the design of steel girder superstructures, including LRFD girder verifications for constructibility, service, fatigue and fracture, flexure, and shear, as well as design provisions for various steel superstructure details. Chapter 7 describes decks and deck systems, covering such topics as traditional design method, empirical design method, deck overhang design, precast deck slabs, and bridge railings. Chapter 8 provides general information about bearings and joints, including design requirements for elastomeric bearings and pot bearings. Finally, a glossary of common terms related to bridge superstructures and LRFD is provided.

• Record URL:
  • http://www.fhwa.dot.gov/bridge/pubs/nhi15047.pdf
• 
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/43721
• Corporate Authors:

  Michael Baker International

  Airside Business Park, 100 Airside Drive
  Moon Township, PA  United States  15108

  National Highway Institute

  Federal Highway Administration
  1310 North Courthouse Road, Suite 300
  Arlington, VA  United States  22201
• Authors:
  • Grubb, Michael A
  • Wilson, Kenneth E
  • White, Christopher D
  • Nickas, William N
• Publication Date: 2015-7

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; Glossary; Photos; References; Tables;
• Pagination: 1694p

Subject/Index Terms

• TRT Terms: Bridge bearings; Bridge construction; Bridge decks; Bridge design; Bridge railings; Bridge superstructures; Concrete; Girders; Highway bridges; Joints; Load and resistance factor design; Load factor; Manuals; Structural analysis; Structural steel
• Identifier Terms: AASHTO LRFD Bridge Design Specifications
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 01619968
• Record Type: Publication
• Report/Paper Numbers: FHWA-NHI-15-047, MBRM137804
• Contract Numbers: DTFH61-11-D-00046
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Dec 27 2016 6:11PM