Analysis of fatigue test conditions for reproducing weld toe cracking into U-rib wall in orthotropic bridge decks. (September 2022)

• Record Type: Journal Article
• Authors: Yang, Haibo; Wang, Ping; Qian, Hongliang; Dong, Pingsha
• Is Part Of: International journal of fatigue. Volume 162(2022)
• Publication Date: 2022-09
• Subjects: Orthotropic bridge decks (OBD) -- Fatigue failure mode -- Fatigue resistance -- Three-point bending fatigue test -- Traction structural stress method; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2022.106976
• Languages: English
• ISSNs: 0142-1123

Abstract

Graphical abstract: Highlights: The fatigue failure mechanism and fatigue resistance properties of U ribs in OBD are investigated by experimental and numerical investigations. The traction structural stress method is validated to be applicable for evaluating the toe-U rib failure mode. Toe-U rib failure mode was not affected by the weld penetration and setting internal weld. Abstract: In this study, the fatigue test conditions for reproducing weld toe cracking into U-rib wall in orthotropic bridge decks (OBD) are investigated by both experimental and numerical methods. The traction structural stress method is shown effective for evaluating this fatigue failure mode (referred to as "toe-U rib" hereafter) and its associated test conditions. Experimental validations were then performed in this study, in which toe-U rib failure mode was consistently observed. It is found that the toe-U rib failure mode and its fatigue capability are not impacted by typical variations in weld penetration in both single-sided and double-sided welds.