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

Kainuma, Shigenobu; Yang, Muye; Jeong, Young‐Keun; Inokuchi, Susumu; Kawabata, Atsunori; Uchida, Daisuke

doi:10.1007/s13296-018-0067-1

Cited by 15 publications

(5 citation statements)

References 12 publications

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“…From Figure 12, it is shown that the SS responsible for the decktoe and the root failure mode undergoes a negligibly change as the weld penetration increases. The result is consistent with the results available in the literature [7,15].…”

Section: Discussionsupporting

confidence: 93%

“…Moreover, a parametric study with 40, 60 and 80% weld penetration showed that a deeper weld penetration produces greater NS on both the weld toe and the root. Kainuma et al [15] experimentally investigated the fatigue behavior of OSD specimens which was 2000 mm long and 1400 mm wide and had a U-rib with weld penetration of 75% and 100%. The results showed that the rib-to-deck weld joints had improved fatigue resistance when the weld penetration was below 75%.…”

Section: Literature Reviewsmentioning

confidence: 99%

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Performance of Rib-to-deck weld joint of an orthotropic steel deck through structural stress method

2023

IJATEE

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Section: Discussionsupporting

confidence: 93%

Section: Literature Reviewsmentioning

confidence: 99%

Performance of Rib-to-deck weld joint of an orthotropic steel deck through structural stress method

2023

IJATEE

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“…Figure 5 shows the locations of measuring points. The fatigue failure crack is prone to initiate and propagate along the plate thickness at the welding toe from the bottom surface of the deck and the inner and outer surfaces of the U-rib, respectively [1] [2]. Therefore, the WRS on the bottom surface of the deck and the both surfaces of the U-ribs were measured, as closely as possible to the welding toe, where the ID, OD, IU, OU represent the measuring points which are 10 mm from inside welding toe or outside welding toe on the surfaces of the decks or the U-ribs, respectively.…”

Section: Measuring Points Layoutmentioning

confidence: 99%

Experimental Investigation on Residual Stress Distribution and Relaxation Effect at Double-Side Welded Rib-to-Deck Joints of Orthotropic Steel Decks

2022

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The welding residual stresses (WRS) will shorten the fatigue resistance of rib-to-deck (RTD) joints of orthotropic steel decks (OSDs) in bridge engineering. It is essential to obtain WRS and its distribution to accurately assess the fatigue damage of RTD joints in OSDs subjected to vehicle loads. Initial WRS will release under cyclic loading, resulting in the redistribution of WRS in steel bridges. To estimate the relaxation of initial transverse WRS, experimental investigations on WRS distribution in initial state and its relaxation law under cyclic loading were conducted of the double-side welded RTD joints using ultrasonic Non-destructive Testing. The results indicate that the initial transverse WRS at the heat affected zone of both inside and outside of decks vary from 0.50fy to 0.83fy, and transform within the range of 0.27fy~0.43fy at both inside and outside surfaces of U-ribs. WRS relaxation is prone to be activated under cyclic loading, especially at the first cycles. Afterwards, the WRS proceed with relaxation at a lower rate, remaining almost stable with more repetitions of loading.

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“…The uneven temperature field during the welding process can generate complex residual stresses. The uneven temperature field during the welding process can generate complex residual stresses, and even small residual tensile stresses can accelerate structural fatigue damage and reduce its fatigue life [3][4][5][6]. Fatigue cracks that originate from the welding toe or root of the deck and U-ribs will propagate along the thickness direction of the deck under repeated vehicle loads and residual stresses [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A Study on Fatigue Crack Reinforcement of Bridge Deck and U-Rib Weld after Considering Residual Stress

Hao,

Ming

2023

Applied Sciences

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In order to study the fatigue performance of the initial crack between the CFRP reinforced deck and the U-rib weld after considering the residual stress, the welding residual stress of the deck and the U-rib weld was analyzed by the welding subprogram of ABAQUS, and then the segment model of the deck and the U-rib of the steel bridge deck was established by using the interaction technology of FRANC 3D-ABAQUS, and the stress intensity factor of the crack between the deck and the U-rib weld under the vehicle-only, vehicle-residual stress combined loads, and CFRP-strengthened combined loads were analyzed. The growth analysis of cracks before and after reinforcement was carried out. The results show that the amplitude of the stress intensity factor of the crack tip is less than the threshold when only the vehicle is applied, and the crack will not spread. After considering the residual stress, the maximum KI value of the crack at the welding toe is increased by 6.9 times compared with the maximum value of the vehicle only, and the maximum KI value at the welding root is increased by 10.7 times; the reinforcement method of CFRP pasted on the lower surface has a reinforcement effect on the fatigue crack at the welding toe, but the fatigue crack at the welding root has no reinforcement effect; the reinforcement effect of the welded toe crack increases with the increase of the number of CFRP layers, length, and width. When the weld toe crack after reinforcement extends to half the thickness of the deck, the number of car-residual stress combined load cycles increases by 43% compared to when it is not reinforced.

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

Cited by 15 publications

References 12 publications

Performance of Rib-to-deck weld joint of an orthotropic steel deck through structural stress method

Performance of Rib-to-deck weld joint of an orthotropic steel deck through structural stress method

Experimental Investigation on Residual Stress Distribution and Relaxation Effect at Double-Side Welded Rib-to-Deck Joints of Orthotropic Steel Decks

A Study on Fatigue Crack Reinforcement of Bridge Deck and U-Rib Weld after Considering Residual Stress

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