Fatigue Behavior Investigation and Stress Analysis for Rib-to-Deck Welded Joints in Orthotropic Steel Decks

Shigenobu Kainuma, Muye Yang, Young Soo Jeong, Susumu Inokuchi, Atsunori Kawabata, Daisuke Uchida

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The fatigue problems in orthotropic steel decks have raised widely concerns in recent years. This study focused on the root crack mechanism at rib-to-deck welded joints, based on the previous test results of sectional specimens and the matching FE analysis, the fatigue behaviors of structure detail were investigated by considering the effect of root gap shapes, weld penetrations, and plate thicknesses on crack initiation. Besides, various root crack depths were simulated in models to clarify the stress variations occurring during the propagation stage under cyclic loading. The results showed that the root gap shape and penetration rate have an impact on the root cracking direction and fatigue life at the initiation stage, but seem not directly related to the crack propagation mechanism; the higher penetration rate is advantageous for the prevention of root crack initiation. However, although the stiffness increased with the increase in plate thickness, the fatigue life of crack initiation might be reduced owing to the low fatigue strength of the thick deck plate, whereas the U-rib thickness has limited effect on the stress response of the root tip. Moreover, the significant difference between the 8 mm-crack model and other crack models is the high stress concentration around the crack tip. The stress conditions of root tip would be changed under loading cycles when a root crack propagated into half of deck plate thickness. Finally, the effect of structural dimensions on fatigue strength were also compared according to test results and FEA.

Original languageEnglish
Pages (from-to)512-527
Number of pages16
JournalInternational Journal of Steel Structures
Volume18
Issue number2
DOIs
Publication statusPublished - Jun 1 2018

Fingerprint

Stress analysis
Welds
Fatigue of materials
Cracks
Crack initiation
Steel
Crack tips
Stress concentration
Crack propagation
Stiffness
Finite element method
Fatigue strength

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

Fatigue Behavior Investigation and Stress Analysis for Rib-to-Deck Welded Joints in Orthotropic Steel Decks. / Kainuma, Shigenobu; Yang, Muye; Jeong, Young Soo; Inokuchi, Susumu; Kawabata, Atsunori; Uchida, Daisuke.

In: International Journal of Steel Structures, Vol. 18, No. 2, 01.06.2018, p. 512-527.

Research output: Contribution to journalArticle

Kainuma, Shigenobu ; Yang, Muye ; Jeong, Young Soo ; Inokuchi, Susumu ; Kawabata, Atsunori ; Uchida, Daisuke. / Fatigue Behavior Investigation and Stress Analysis for Rib-to-Deck Welded Joints in Orthotropic Steel Decks. In: International Journal of Steel Structures. 2018 ; Vol. 18, No. 2. pp. 512-527.
@article{ca34c6c803c4402898c673ef8a5255c2,
title = "Fatigue Behavior Investigation and Stress Analysis for Rib-to-Deck Welded Joints in Orthotropic Steel Decks",
abstract = "The fatigue problems in orthotropic steel decks have raised widely concerns in recent years. This study focused on the root crack mechanism at rib-to-deck welded joints, based on the previous test results of sectional specimens and the matching FE analysis, the fatigue behaviors of structure detail were investigated by considering the effect of root gap shapes, weld penetrations, and plate thicknesses on crack initiation. Besides, various root crack depths were simulated in models to clarify the stress variations occurring during the propagation stage under cyclic loading. The results showed that the root gap shape and penetration rate have an impact on the root cracking direction and fatigue life at the initiation stage, but seem not directly related to the crack propagation mechanism; the higher penetration rate is advantageous for the prevention of root crack initiation. However, although the stiffness increased with the increase in plate thickness, the fatigue life of crack initiation might be reduced owing to the low fatigue strength of the thick deck plate, whereas the U-rib thickness has limited effect on the stress response of the root tip. Moreover, the significant difference between the 8 mm-crack model and other crack models is the high stress concentration around the crack tip. The stress conditions of root tip would be changed under loading cycles when a root crack propagated into half of deck plate thickness. Finally, the effect of structural dimensions on fatigue strength were also compared according to test results and FEA.",
author = "Shigenobu Kainuma and Muye Yang and Jeong, {Young Soo} and Susumu Inokuchi and Atsunori Kawabata and Daisuke Uchida",
year = "2018",
month = "6",
day = "1",
doi = "10.1007/s13296-018-0067-1",
language = "English",
volume = "18",
pages = "512--527",
journal = "International Journal of Steel Structures",
issn = "1598-2351",
publisher = "Korean Society of Steel Construction",
number = "2",

}

TY - JOUR

T1 - Fatigue Behavior Investigation and Stress Analysis for Rib-to-Deck Welded Joints in Orthotropic Steel Decks

AU - Kainuma, Shigenobu

AU - Yang, Muye

AU - Jeong, Young Soo

AU - Inokuchi, Susumu

AU - Kawabata, Atsunori

AU - Uchida, Daisuke

PY - 2018/6/1

Y1 - 2018/6/1

N2 - The fatigue problems in orthotropic steel decks have raised widely concerns in recent years. This study focused on the root crack mechanism at rib-to-deck welded joints, based on the previous test results of sectional specimens and the matching FE analysis, the fatigue behaviors of structure detail were investigated by considering the effect of root gap shapes, weld penetrations, and plate thicknesses on crack initiation. Besides, various root crack depths were simulated in models to clarify the stress variations occurring during the propagation stage under cyclic loading. The results showed that the root gap shape and penetration rate have an impact on the root cracking direction and fatigue life at the initiation stage, but seem not directly related to the crack propagation mechanism; the higher penetration rate is advantageous for the prevention of root crack initiation. However, although the stiffness increased with the increase in plate thickness, the fatigue life of crack initiation might be reduced owing to the low fatigue strength of the thick deck plate, whereas the U-rib thickness has limited effect on the stress response of the root tip. Moreover, the significant difference between the 8 mm-crack model and other crack models is the high stress concentration around the crack tip. The stress conditions of root tip would be changed under loading cycles when a root crack propagated into half of deck plate thickness. Finally, the effect of structural dimensions on fatigue strength were also compared according to test results and FEA.

AB - The fatigue problems in orthotropic steel decks have raised widely concerns in recent years. This study focused on the root crack mechanism at rib-to-deck welded joints, based on the previous test results of sectional specimens and the matching FE analysis, the fatigue behaviors of structure detail were investigated by considering the effect of root gap shapes, weld penetrations, and plate thicknesses on crack initiation. Besides, various root crack depths were simulated in models to clarify the stress variations occurring during the propagation stage under cyclic loading. The results showed that the root gap shape and penetration rate have an impact on the root cracking direction and fatigue life at the initiation stage, but seem not directly related to the crack propagation mechanism; the higher penetration rate is advantageous for the prevention of root crack initiation. However, although the stiffness increased with the increase in plate thickness, the fatigue life of crack initiation might be reduced owing to the low fatigue strength of the thick deck plate, whereas the U-rib thickness has limited effect on the stress response of the root tip. Moreover, the significant difference between the 8 mm-crack model and other crack models is the high stress concentration around the crack tip. The stress conditions of root tip would be changed under loading cycles when a root crack propagated into half of deck plate thickness. Finally, the effect of structural dimensions on fatigue strength were also compared according to test results and FEA.

UR - http://www.scopus.com/inward/record.url?scp=85048504188&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048504188&partnerID=8YFLogxK

U2 - 10.1007/s13296-018-0067-1

DO - 10.1007/s13296-018-0067-1

M3 - Article

AN - SCOPUS:85048504188

VL - 18

SP - 512

EP - 527

JO - International Journal of Steel Structures

JF - International Journal of Steel Structures

SN - 1598-2351

IS - 2

ER -