Improved Cross-Frame Analysis and Design: Wide-Flange T-Shape Sections (2023) / Chapter Skim
Currently Skimming:
Pages 1-4
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 1... ...
1 Introduction Cross-frames are important structural elements that serve many functions throughout the construction and service life of steel I-girder bridges. A primary function of cross-frames is to provide girder stability and enhance the lateral-torsional buckling (LTB)
|
From page 2... ...
2 Improved Cross-Frame Analysis and Design: Wide-Flange T-Shape Sections modifications were balloted and approved in 2021 for implementation in the 10th edition of AASHTO LRFD. The key results and recommendations from Stage 1 are published in NCHRP Report 962: Proposed Modification to AASHTO Cross-Frame Analysis and Design (Reichenbach et al.
|
From page 3... ...
Introduction 3 elastic material stiffness (i.e., Young's modulus, E, for steel) or the relevant cross-sectional properties such as area, A
|
From page 4... ...
4 Improved Cross-Frame Analysis and Design: Wide-Flange T-Shape Sections 1.2 Research Objectives As outlined in Section 1.1, Stage 1 of NCHRP Project 12-113 focused on three main items including: member-level, panel-level, and system-level studies to determine the appropriate R-factors for cross-frames with single-angle members. In addition, Stage 1 had also demonstrated that the effects of connection eccentricity on the cross-frame stiffness can be reasonably estimated in a three-dimensional structural analysis model by utilizing beam elements with the eccentric offsets explicitly represented.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.