Fatigue cracks in longitudinal ribs of steel orthotropic deck

Xiao, Zhigang; Yamada, Kentaro; Inoue, Jirou; Yamaguchi, Kouta

doi:10.1016/j.ijfatigue.2005.07.017

Cited by 97 publications

(26 citation statements)

References 12 publications

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“…9(b). It is observed from the literature that a change of depth-to-length ratio does not cause a significant change in fatigue strength [17]. In this research, ten crack depths from 0.1 to 6 mm were investigated.…”

Section: Analysis Of the Third-level Modelmentioning

confidence: 95%

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

Nguyen

Chu

Kim

2011

Journal of Constructional Steel Research

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Section: Analysis Of the Third-level Modelmentioning

confidence: 95%

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

Nguyen

Chu

Kim

2011

Journal of Constructional Steel Research

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“…However, fatigue cracking of the OSD is frequently observed in practice [2][3][4][5], resulting in considerable maintenance or rehabilitation costs. During the past decades, design specifications and approaches to predict the remaining fatigue life of the OSD have been developed and applied actively [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Reliability Assessment of Orthotropic Steel Bridge Decks Based on Probabilistic Multi-Scale Finite Element Analysis

Guo¹,

Liu²,

Zhu³

2015

Volume 11 Number 3

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ABSTRACT:The orthotropic steel deck (OSD) has been utilized successfully for thousands of bridges worldwide; however, fatigue cracking of the OSD has been observed frequently due to the complicated welded details combined with stresses that can be difficult to quantify, and the uncertainties in fatigue damage accumulation. In this paper, a fatigue reliability assessment method is proposed based on a comprehensive vehicle load model and probabilistic multi-scale finite element (FE) analysis. The vehicle load model, obtained from statistical data of toll stations, consists of probability distribution functions regarding the number of axles, axle weights, and transversal positions of vehicles, etc. The multi-scale finite element model not only captures the main features of the entire bridge but also gives an accurate description on local stress responses of the OSD in a relatively efficient way. Based on the probabilistic FE analysis combined with the developed vehicle load model, the fatigue reliabilities of the OSD could be obtained. Application of the proposed method is made in the fatigue reliability assessment of the OSD of the Runyang Cable-stayed Bridge for demonstration. INTRODUCTIONThe orthotropic steel deck (OSD) has been utilized successfully for thousands of bridges worldwide due to its notable advantages [1], i.e., increased rigidity, material savings, low maintenance, suitability for standardization and prefabrication, etc. However, fatigue cracking of the OSD is frequently observed in practice [2-5], resulting in considerable maintenance or rehabilitation costs. During the past decades, design specifications and approaches to predict the remaining fatigue life of the OSD have been developed and applied actively [6][7][8][9][10]. However, the challenge for extending the fatigue life of the OSD still exists, resulting from the complicated welded details in which stresses can be difficult to quantify. Besides, with the increase of span lengths, bridges are becoming more flexible, which makes them more vulnerable to the vehicle loads, wind-induced vibration and/or fluctuations of ambient temperatures [11]. Therefore, the accurate prediction of fatigue life of the OSD requires that all influencing factors should be taken into account, which includes not only the configuration of fatigue details and vehicle loads but also the global structural behavior and/or environmental effect, etc.In fatigue analyses, one important step is to obtain the fatigue stress spectra, and in general there are two types of approaches, namely the model-based approaches and monitoring-based approaches. The traditional way of obtaining the fatigue stress spectra on bridges is based upon the stress analysis with a traffic load model and a structural model [12][13]. Therefore, the accuracy of model-based approaches depends upon the rationality of traffic load models as well as the structural models. The monitoring-based approaches, however, provide authentic fatigue stress spectra. Especially, the recent development of structural h...

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“…Fatigue cracks can easily occur at the welded joint details between the deck plate and the ribs in an orthotropic steel deck because of the relative slenderness of its structural members against cyclic loads from moving vehicles [3][4][5]. It is difficult to estimate their fatigue strength correctly because of the complexity of the welding details and their various geometries [6][7][8]. These are usually divided into open ribs and closed rib types according to the rib shape and rib closing condition, and diverse fatigue cracks have been reported depending on the bridge deck type.…”

Section: Introductionmentioning

confidence: 99%