Preliminary communication

https://doi.org/10.17559/TV-20190629100555

Research on Random Fatigue Load Model of Highway Bridge by Vehicle Traffic Based on GMM

Hao Qu ; School of Highway, Chang'an University, Xi'an, Shaanxi Province, 710064, China
Zhihua Niu ; Power China Northwest Engineering Corporation Limited, Xi'an, Shaanxi Province, 710065, China
Pingming Huang ; School of Highway, Chang'an University, Xi'an, Shaanxi Province, 710064, China

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.

Keywords

fatigue vehicle model; GMM; highway bridges; K-S test, Shandong JiNan-QingDao expressway

Hrčak ID:

239107

URI

https://hrcak.srce.hr/239107

Publication date:

14.6.2020.

Visits: 1.580 *