Fatigue analysis of a pre-fabricated orthotropic steel deck for light-weight vehicles

Nguyen, Huu Thanh; Chu, Quoc-Thang; Kim, Seung-Eock

doi:10.1016/j.jcsr.2010.11.015

Cited by 19 publications

(5 citation statements)

References 8 publications

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“…Estimations of the fatigue crack propagation life, based on the Paris law, provide a convenient approach in assessing the fatigue life of the cyclically loaded, large-scale structural and mechanical components [4][5][6][7][8][9][10]. Olowokere and Nwosu [11] demonstrated that the crack propagation life estimated using the Paris law with numerically computed stress-intensity factors (SIFs) using spring elements agreed well with the experimental results obtained from cracked tubular T-joints subjected to axial loads and brace in-plane bending.…”

Section: Introductionmentioning

confidence: 59%

Fatigue performance of tubular X-joints with PJP+ welds: II — Numerical investigation

Qian

Nguyen

Petchdemaneengam

et al. 2013

Journal of Constructional Steel Research

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Section: Introductionmentioning

confidence: 59%

Fatigue performance of tubular X-joints with PJP+ welds: II — Numerical investigation

Qian

Nguyen

Petchdemaneengam

et al. 2013

Journal of Constructional Steel Research

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“…The orthotropic steel bridge deck is a steel deck system with longitudinal ribs and floor beams to support and resist the applied loads such as vehicles and the dead load, and transfer these loads to the main bridge system, which has different types of structures and stiffness values in the longitudinal and transverse directions [4,5]. Much study has shown that the fatigue failure was one of the major factors in the failure of steel bridges [6][7][8][9], and which is liable to fatigue cracking once placed in service [10]. Fatigue cracks originated in welded details of the orthotropic steel bridge deck, which greatly impacted on the traffic safety and limited the service life, especially in deck-to-rib joints [11,12].…”

Section: Introductionmentioning

confidence: 99%

Research on Fatigue Strength for Weld Structure Details of Deck with U-rib and Diaphragm in Orthotropic Steel Bridge Deck

Chen

2019

Metals

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The orthotropic steel bridge deck weld structure would easily cause fatigue cracking under the repeated action of vehicle load. This paper took the steel box girder in a bridge as a research object, researched the mechanical properties of the steel plate and the microstructure of the welded joint, then designed the fatigue specimens of the deck plate and did the fatigue test. The Δσ-N curves and stress amplitudes of the weld details of the deck plate with U-rib and diaphragm under different probabilities of survival were obtained. After extended the Δσ-N curves to the long life range, the fatigue damage calculation equation of the detail was proposed, and the cut-off limit under the 50% and 97.7% probability of survival were 81.50 MPa and 53.11 MPa, respectively. Based on the actual vehicle load spectrum and simplified finite element model of the steel box girder section, the stress amplitude of the details of the weld joint was calculated. The calculation result shows that the maximum stress amplitude of the concerned point was 38.29 MPa, less than the cut-off limit. It means that the fatigue strength of the details of the weld joint meet the requirement of the fatigue design.

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“…After a great deal of in situ and laboratory testing, fatigue-prone details have been divided into different categories, namely, (a) weld between U-shaped rib and diaphragm, (b) longitudinal weld between the deck plate and longitudinal U-shaped ribs, (c) cutouts in the diaphragm, and (d) stiffener splice joints. 4–6 Fatigue life can be estimated from a design specification 7 or from loading information and/or a structural health monitoring (SHM) system. 8,9 SHM consists of measuring the behavior of a structure under operational conditions and evaluating incidents, anomalies, damage, and deterioration.…”

Section: Introductionmentioning

confidence: 99%

Virtual Monitoring of orthotropic steel deck using bridge weigh-in-motion algorithm: Case study

Zhang¹,

Zhao

O’Brien

et al. 2018

Structural Health Monitoring

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This article outlines a Virtual Monitoring approach for fatigue life assessment of orthotropic steel deck bridges. Bridge weigh-in-motion was used to calculate traffic loads which were then used to calculate “virtual” strains. Some of these strains were checked through long-term monitoring of dynamic strain data. Field tests, incorporating calibration with pre-weighed trucks and monitoring the response to regular traffic, were conducted at Fochen Bridge, which has an orthotropic steel deck and is located in Foshan City, China. In the calibration tests, a 45-t 3-axle truck ran repeatedly across Lane 2, the middle lane in a 3-lane carriageway. The results show that using an influence surface to weigh vehicles can improve the accuracy of the weights and, by inference, of remaining service life calculations. The most fatigue-prone position was found to be at the cutout in the diaphragms. Results show that many vehicles are overweight—the maximum gross vehicle weight recorded was 148 t, nearly 3.6 times heavier than the fatigue design truck.

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Fatigue analysis of a pre-fabricated orthotropic steel deck for light-weight vehicles

Cited by 19 publications

References 8 publications

Fatigue performance of tubular X-joints with PJP+ welds: II — Numerical investigation

Fatigue performance of tubular X-joints with PJP+ welds: II — Numerical investigation

Research on Fatigue Strength for Weld Structure Details of Deck with U-rib and Diaphragm in Orthotropic Steel Bridge Deck

Virtual Monitoring of orthotropic steel deck using bridge weigh-in-motion algorithm: Case study

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