Effects of Fabrication Procedures and Weld Melt-Through on Fatigue Resistance of Orth

[mahyarov]

Effects of Fabrication Procedures and Weld Melt-Through on Fatigue Resistance of Orthotropic Steel Deck Welds

Author: Uang, Chia-Ming | Size: 6.09 MB | Format: PDF | Quality: Original preprint | Publisher: University of California, San Diego | Year: 2007 | pages: 168

Orthotropic bridge decks are commonly fabricated using 80% partial-joint-penetration groove welds (PJP) to join closed ribs to a deck plate. Because a tight fit may not always be achievable, weld melt-through is difficult to avoid and fatigue resistance may result. This report presents a study in which six 2-span, full-scale orthotropic steel deck specimens were built and tested to study the effects of weld melt-through and distortion control measures on the fatigue resistance of closed rib-to-deck PJP welds. Three of the specimens were heat straightened, while the other three were pre-cambered to minimize the need for subsequent heat straightening. Based upon test results, it was determined that effective pre-cambering is beneficial to mitigate the crack potential in rib-to-deck PJP welds.

Code:

***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************

This post has been made by CivilEA Post-Generator ver 2.1.6