Stress Analysis on Distortion of Corrugated Steel Web Box Girders

SHAO Jiangyan; ZHANG Yuanhai; ZHAO Qingyou; YAO Xiaodong

doi:10.21656/1000-0887.390260

Volume 40 Issue 10

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SHAO Jiangyan, ZHANG Yuanhai, ZHAO Qingyou, YAO Xiaodong. Stress Analysis on Distortion of Corrugated Steel Web Box Girders[J]. Applied Mathematics and Mechanics, 2019, 40(10): 1109-1121. doi: 10.21656/1000-0887.390260

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Stress Analysis on Distortion of Corrugated Steel Web Box Girders

doi: 10.21656/1000-0887.390260

School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P.R.China

Funds: The National Natural Science Foundation of China(51468032)

Received Date: 2018-10-08
Rev Recd Date: 2019-01-20
Publish Date: 2019-10-01

Abstract

Abstract

Based on the definition of the distortion angle presented for trapezoidal-section box girders, according to the theories for the traditional concrete box girder and the mechanical properties of the corrugated steel web, the distortion warping stresses of the corrugated steel web composite box girder were deduced. The governing differential equations for the distortion angle were established with the energy variation calculus method based on the principle of stationary potential energy, and the initial parameter solutions to the equations were achieved. With the initial parameter method the distortion angle and the distortion double moment of the corrugated steel web composite box girder were obtained. Finally, the longitudinal distortion warping stresses were got. Contrastive analysis of the distortion warping stresses were done between the traditional concrete box girder and the corrugated steel web composite box girder. The analysis results show that, due to the negligible longitudinal stiffness of the corrugated steel web, the warping stress at the web-bottom intersection of the corrugated steel web composite box girder is much larger than that of the concrete box girder.
- corrugated steel web,
- box girder,
- energy method,
- initial parameter method,
- distortion

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References(16)

References

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