Research on Random Fatigue Load Model of Highway Bridge by Vehicle Traffic Based on GMM
Hao Qu,Zhihua Niu,Pingming Huang +2 more
TL;DR: The fatigue cumulative damage formula of multi-vehicle upper bridge is proposed, and the improved Gaussian hybrid modelling method is proposed to improve the accuracy and convenience of the probability model, which is conducive to the establishment of a scientific and efficient load probability model for road vehicles.
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Abstract: Highway bridges have often suffered accidents due to fatigue damage. This paper studies the influence of vehicle operating state on the fatigue performance of bridges. Based on GMM method and K-S test in information statistics, this paper proposes an improved Gaussian hybrid modelling method, and studies the various parameters of vehicle operating state on beam bridge fatigue, such as the impact of the damage and its fatigue life assessment. On this basis, the fatigue cumulative damage formula of multi-vehicle upper bridge is proposed. The traffic load of Shandong JiNan-QingDao expressway has been GMMly analysed by GMM. The Gaussian mixture model is used to fit the vehicle load probability function by standard fatigue vehicle model. Based on the expressway, the vehicle fatigue has been established to facilitate the fatigue load and evaluate the fatigue life. Gradually this paper helps to improve the accuracy and convenience of the probability model, which is conducive to the establishment of a scientific and efficient load probability model for road vehicles.
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Citations
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TL;DR: In this article, an approach for the fatigue stress spectrum simulation of short-span bridges under the dynamic impacts of stochastic traffic loading is presented, which is used to evaluate the fatigue reliability of existing bridges.
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- 01 Dec 2023
TL;DR: The accumulation of fatigue damage in steel-reinforced concrete beams has a significant effect on the load-bearing capacity and reliability index.
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•Journal Article
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Efficient Bayesian mixed-model analysis increases association power in large cohorts
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Fatigue reliability assessment of steel bridge details integrating weigh-in-motion data and probabilistic finite element analysis
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