Fatigue Reliability Assessment of Orthotropic Bridge Decks under Stochastic Truck Loading

Liu, Yang; Xiao, Xiong; Lu, Naiwei; Deng, Yang

doi:10.1155/2016/4712593

Cited by 15 publications

(13 citation statements)

References 36 publications

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“…Figures 8 and 9 respectively for a relative crack depth equal to /h=0. 3, showing the mode shape amplitude dependence of the clamped beam with five edge cracks with an increase of curvatures near to the clamped ends. This may lead one to expect that the flexural stresses will increase non-linearly near to the clamped end with the increase of the vibration amplitude.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…Many studies have suggested that nearly 90% of failures in metal structures are primarily fatigue failures. Although because of its complex nature, the process of initiation and propagation of cracks is very silent and quite difficult to understand [3], designers have no alternative but to ensure that all structural components have adequately known fatigue lives. The reader interested in more details on this subject can be returned to [4 6].…”

Section: Introductionmentioning

confidence: 99%

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Linear and geometrically nonlinear free and forced vibrations of fully clamped multi-cracked beams

Chajdi¹,

Adri²,

Bikri³

et al. 2019

Diagnostyka

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The linear and geometrically nonlinear free and forced vibrations of Euler-Bernoulli beams with multicracks are investigated using the crack equivalent rotational spring model and the beam transfer matrix method. The Newton Raphson solution of the transcendental frequency equation corresponding to the linear case leads to the cracked beam linear frequencies and mode shapes. Considering the nonlinear case, the beam transverse displacement is expanded as a series of the linear modes calculated before. Using the discretised equation is obtained and solved using the so-called second formulation, developed previously for similar nonlinear structural dynamic problems, to obtain the multi-cracked beam backbone curves and the corresponding amplitude dependent nonlinear mode shapes. Considering the forced vibration case, the nonlinear frequency response functions obtained numerically near to the fundamental nonlinear mode using a single mode approach show the effects of the number of cracks, their locations and depths, and the level of the concentric harmonic force. The inverse problem is explored using the frequency contour plot method to identify crack parameters, such as the crack locations and depths. Satisfactory comparisons are made with previous analytical results.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Linear and geometrically nonlinear free and forced vibrations of fully clamped multi-cracked beams

Chajdi¹,

Adri²,

Bikri³

et al. 2019

Diagnostyka

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“…Gaussian distribution is commonly used to estimate GVW [18,21]. O'Brien et al [19] noted, however, that the use of a mixed Gaussian model to estimate truck weight yielded satisfactory results across much of the GVW range, but significantly underestimated probabilities in the upper tail.…”

Section: Gross Weight Modeling a Methodology Based On A Mixedmentioning

confidence: 99%

“…We used statistical modeling methods to simulate random truck loading for an equivalent comparison. Random truck load modeling has been widely used to estimate load effects on bridges based on site-specific data [18][19][20][21].…”

Section: Statistical Modelingmentioning

confidence: 99%

Effects of Revised Toll‐by‐Weight Policy on Truck Overloading Behavior and Bridge Infrastructure Damage Using Weigh‐in‐Motion Data: A Comparative Study in China

Huang

Zhou

Zhang

et al. 2019

Advances in Civil Engineering

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Since 2000, overloaded trucks have caused more than 50 bridges to collapse in China. In an effort to ensure the structural safety and extend the service life of the highway infrastructure, the Chinese government has proposed a series of policies in the past decade to mitigate truck overloading. This study aimed at investigating the effects of China’s recently revised toll-by-weight policy on truck overloading behavior and bridge infrastructure damage using weigh-in-motion data that spanned seven years (January 2011 to March 2018) and two successive toll-by-weight policies (with the new one implemented from August 2016), wherein truck data were measured from a typical national freeway segment. We first compared truck traffic volumes, compositions, and weight distributions under the initial and revised toll-by-weight policies. Next, we compared bridge infrastructure performance with respect to safety and fatigue based on the overloaded truck traffic observed under the initial and revised toll-by-weight policies. The results indicated that the revised toll-by-weight policy, which uses a stepwise incremental fee structure based on vehicle weight, was more effective at controlling truck overloading behavior and reducing bridge infrastructure damage than the initial toll-by-weight policy. Under the current policy, average daily truck volumes, overloaded truck proportions, and maximum truck weights decreased significantly. Concurrently, extreme and equivalent load effects for safety and fatigue assessments, respectively, decreased by an average of 20% for small- to medium-span bridges. Despite these noted improvements, overloaded truck traffic persisted, with loads often exceeding bridge design levels. This study’s findings can support future efforts by the Chinese government to further refine their toll-by-weight policies and subsequently ensure a safe and viable transportation network.

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“…In recent decades, the application of orthotropic steel bridge decks in China's large-span highway bridges has developed rapidly. However, the fatigue research and design specification lags behind the construction of bridges, and fatigue design is usually performed with reference to foreign regulations [Gurney (2006); Song, Ding, Wan et al (2013); Deng, Ding and Li (2013); Zeng, Zhang, Cui et al (2015); Liu, Xiao, Lu, et al (2016); Chang and Bae (2014); Yang and Zhou (2017); Guo and Chen (2013); Miao and Shi (2013)]. For the fatigue problem of orthotropic steel box girder, the fatigue properties of steel box girder welded details under wheel loads are widely studied through experiments and linear fatigue accumulation methods.…”

Section: Introductionmentioning

confidence: 99%

Load Test and Fatigue Life Evaluation for Welded Details in Taizhou Yangtze River Bridge

Zhuang¹,

Miao²,

Chen³

2019

Structural Durability &Amp; Health Monitoring

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To study the fatigue performance of welded details in the orthotropic steel decks, the steel box girder for Taizhou Yangtze River Bridge is taken as the research object. Based on the field monitoring data obtained from the load test, the stress response test of the orthotropic steel box girder under wheel loads is performed and the correctness of the vehicle test data obtained from the field monitoring data also have been verified by the numerical results of the finite element model. Based on the Miner linear cumulative damage theory, the S-N curve of the Eurocode3 specification is referenced, and the fatigue life calculation formula of the welded details is determined according to the actual structural features. The fatigue life evaluation of the four typical welded details is obtained. The results indicate that: The load test data is compared and verified by the numerical result of finite element model. The local effect of stress distribution is remarkable. The stress measurement points on the four typical welded details are mainly based on low amplitude stress cycles. Most of the stress ranges are 2-10 MPa, among which the stress range of the welded details at the U-rib butt joint is larger. The fatigue life of welded details in the 14 mm thick top plate is smaller than that of the 16 mm thick top plate corresponding to the fatigue life of the welded details. The rib-to-rib butt welded joints and the openings of the diaphragms were prone to fatigue failure. Among them, the welding details of the 14 mm thick U-rib butt joints first appeared fatigue failure. The arrangement of the diaphragm can effectively increase the fatigue life of the top-U rib weld and improve the fatigue performance at this detail.

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Fatigue Reliability Assessment of Orthotropic Bridge Decks under Stochastic Truck Loading

Cited by 15 publications

References 36 publications

Linear and geometrically nonlinear free and forced vibrations of fully clamped multi-cracked beams

Linear and geometrically nonlinear free and forced vibrations of fully clamped multi-cracked beams

Effects of Revised Toll‐by‐Weight Policy on Truck Overloading Behavior and Bridge Infrastructure Damage Using Weigh‐in‐Motion Data: A Comparative Study in China

Load Test and Fatigue Life Evaluation for Welded Details in Taizhou Yangtze River Bridge

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