ANALYSIS OF WELD FATIGUE HOT SPOT STRESS OF STEEL BRIDGE DECK UNDER WHEEL LOAD

Fu Zhongqiu  Ji Bohai  Wang Manman  Zhang Qing

doi:10.13204/j.gyjz201510030

Volume 45 Issue 10

Dec. 2015

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Fu Zhongqiu Ji Bohai Wang Manman Zhang Qing, . ANALYSIS OF WELD FATIGUE HOT SPOT STRESS OF STEEL BRIDGE DECK UNDER WHEEL LOAD[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(10): 161-165. doi: 10.13204/j.gyjz201510030

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Fu Zhongqiu Ji Bohai Wang Manman Zhang Qing, . ANALYSIS OF WELD FATIGUE HOT SPOT STRESS OF STEEL BRIDGE DECK UNDER WHEEL LOAD[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(10): 161-165. doi: 10.13204/j.gyjz201510030

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ANALYSIS OF WELD FATIGUE HOT SPOT STRESS OF STEEL BRIDGE DECK UNDER WHEEL LOAD

doi: 10.13204/j.gyjz201510030

Fu Zhongqiu Ji Bohai Wang Manman Zhang Qing,

Publish Date: 2015-10-20

Abstract

Abstract

The orthotropic steel bridge deck finite element model was established to analyze the hot spot stress． Considering the wheel loads in different vertical and lateral position，the changing process of the hot spot stress and stress amplitude were analyzed． The influence of different axle types and the most unfavorable load position were studied． It was shown that longitudinal weld at different positions had the same stress amplitude when the wheel load was moving longitudinally． The damage degree calculation result of multiaxis load was in multiple relation to that of single axle load． So，multiaxis load can be equivalent to a multiple single axle load when doing calculations． According to the analysis，the most unfavorable position along transverse direction of double wheel load is just above the weld．
- steel bridge deck,
- fatigue,
- hot spot stress,
- position of load

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