Proposed Modification to AASHTO Cross-Frame Analysis and Design
Cross-frames are important structural components that serve many functions throughout the service life of
steel I-girder bridges. Under repetitive
load cycles caused by heavy truck passages, cross-frames and their connections can be susceptible to load-induced
fatigue cracking if not properly designed.
The TRB National Cooperative Highway Research Program's
NCHRP Research Report 962: Proposed Modification to AASHTO Cross-Frame Analysis and Design
addresses knowledge gaps in an attempt to improve the reliability
and economy of cross-frames in steel I-girder bridges and produces quantitatively based methodologies and design
guidelines.
Appendices B through F provide examples of cross-frame design for a straight bridge and a curved bridge as well as a comprehensive overview of the work completed in Phases I, II, and III of the project. Appendix A, Proposed Modifications to AASHTO LRFD, will be published by AASHTO.
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
This Summary Last Modified On: 4/5/2021