Wind and Structures

  • 제17권1호
  • /
  • Pages.43-68
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  • 2013
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Statistical characteristics of sustained wind environment for a long-span bridge based on long-term field measurement data

  • Ding, Youliang (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Zhou, Guangdong (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Li, Aiqun (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Deng, Yang (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University)
  • 투고 : 2010.11.16
  • 심사 : 2012.10.03
  • 발행 : 2013.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

The fluctuating wind induced vibration is one of the most important factors which has been taken into account in the design of long-span bridge due to the low stiffness and low natural frequency. Field measurement characteristics of sustained wind on structure site can provide accurate wind load parameters for wind field simulation and structural wind resistance design. As a suspension bridge with 1490 m main span, the Runyang Suspension Bridge (RSB) has high sensitivity to fluctuating wind. The simultaneous and continuously wind environment field measurement both in mid-span and on tower top is executed from 2005 up to now by the structural health monitoring system installed on this bridge. Based on the recorded data, the wind characteristic parameters, including mean wind speed, wind direction, the turbulence intensity, the gust factors, the turbulence integral length, power spectrum and spatial correlation, are analyzed in detail and the coherence functions of those parameters are evaluated using statistical method in this paper. The results indicate that, the turbulence component of sustain wind is larger than extremely strong winds although its mean wind speed is smaller; the correlation between turbulence parameters is obvious; the power spectrum is special and not accord with the Simiu spectrum and von Karman spectrum. Results obtained in this study can be used to evaluate the long term reliability of the Runyang Suspension Bridge and provide reference values for wind resistant design of other structures in this region.

키워드

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피인용 문헌

  1. Experimental investigation on aerodynamic behavior of a long span cable-stayed bridge under construction 2017, https://doi.org/10.1007/s12205-017-0402-7
  2. Monitoring-based analysis of the static and dynamic characteristic of wind actions for long-span cable-stayed bridge vol.8, pp.1, 2018, https://doi.org/10.1007/s13349-017-0257-0
  3. Wind characteristics at a long-span sea-crossing bridge site based on monitoring data pp.2048-4046, 2018, https://doi.org/10.1177/1461348418762962
  4. SHM-based probabilistic representation of wind properties: statistical analysis and bivariate modeling vol.21, pp.5, 2013, https://doi.org/10.12989/sss.2018.21.5.591
  5. Influence of Wind Speed, Wind Direction and Turbulence Model for Bridge Hanger: A Case Study vol.13, pp.9, 2021, https://doi.org/10.3390/sym13091633