Fatigue assessment of historic retrofitted through-truss riveted railway bridge

Parodi-Figueroa, Camila; D’Ayala, Dina; Sebastian, Wendel

doi:10.1016/j.engstruct.2024.117812

Cited by 1 publication

(1 citation statement)

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“…However, in the operation process, the bridge structure is in the external environment for a long time [1], and the load condition may exceed the design estimation, which leads to an impact on the durability of the bridge. It is reported that many bridges in the world have fatigue cracks or even brittle fractures during operation, so it is necessary to study the fatigue life of bridges [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study on Fatigue Life of PC Composite Box Girder Bridge with Corrugated Steel Webs under the Combined Action of Temperature and Static Wind Loads

Wang,

Jia

2024

Applied Sciences

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The large-span bridge is highly sensitive to temperature and wind loads. Therefore, it is essential to study the bridge’s fatigue life under the combined effects of temperature and static wind loads. This study focuses on the main bridge of Qiao Jia-fan 2# on the Yinkun Expressway (G85), with a span of 250 m and a configuration of a PC composite box girder bridge with corrugated steel webs. Firstly, on-site temperature and wind direction measurements with wind speed were conducted at the bridge site. Origin 2022 software is used to make mathematical statistics on the data, the representative values of atmospheric temperature difference between day and night and the basic wind speeds are calculated. Secondly, based on the basic wind speed in the most unfavorable wind direction, the static three-component force coefficients of bridge at different angles of attack are calculated by FLUENT 2022 R1 software. By comparison, the most unfavorable wind angle of attack, wind direction and wind load value of Qiao Jia-fan 2# Bridge are obtained. Finally, the finite element software MIDAS/FEA NX 2022 is used to analyze the fatigue life of the main bridge of the Qiao Jia-fan 2# Bridge. The analysis results show that the representative value of the temperature difference between day and night in the area where PC composite box girder bridge with corrugated steel webs is located is 22 °C, the most unfavorable wind direction is NNE wind direction, and the most unfavorable wind attack angle is 3° wind attack angle. It is found that the maximum stress of concrete and corrugated steel webs appears near the 0# block, and the life of corrugated steel webs is far greater than that of concrete.

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Section: Introductionmentioning

confidence: 99%