Wind and Structures

  • 제31권5호
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  • Pages.459-472
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  • 2020
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Numerical analysis of a long-span bridge response to tornado-like winds

  • Hao, Jianming (School of Highway, Chang'an University) ;
  • Wu, Teng (Department of Civil, Structural and Environmental Engineering, University at Buffalo)
  • 투고 : 2020.01.14
  • 심사 : 2020.11.21
  • 발행 : 2020.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study focused on the non-synoptic, tornado-like wind-induced effects on flexible horizontal structures that are extremely sensitive to winds. More specifically, the nonuniform, intensive vertical wind-velocity and transient natures of tornado events and their effects on the global behavior of a long-span bridge were investigated. In addition to the static part in the modeling of tornado-like wind-induced loads, the motion-induced effects were modeled using the semi-empirical model with a two-dimensional (2-D) indicial response function. Both nonlinear wind-induced static analysis and linear aeroelastic analysis in the time domain were conducted based on a 3-D finite-element model to investigate the bridge performance under the most unfavorable tornado pattern considering wind-structure interactions. The results from the present study highlighted the important effects due to abovementioned tornado natures (i.e., nonuniform, intensive vertical wind-velocity and transient features) on the long-span bridge, and hence may facilitate more appropriate wind design of flexible horizontal structures in the tornado-prone areas.

키워드

과제정보

The support for this project provided by the Fundamental Research Funds for the Central Universities CHD (Grant No. 300102210108), the Innovation-Driven Project of Central South University (No. 2020CX009) and the Center for Computational Research at the University at Buffalo is gratefully acknowledged.

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피인용 문헌

  1. Efficient buffeting analysis under non-stationary winds and application to a mountain bridge vol.32, pp.2, 2020, https://doi.org/10.12989/was.2021.32.2.89