Wind and Structures

  • 제21권4호
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  • Pages.407-424
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  • 2015
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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Numerical investigation on the wind stability of super long-span partially earth-anchored cable-stayed bridges

  • Zhang, Xin-jun (College of Civil Engineering & Architecture, Zhejiang University of Technology) ;
  • Yao, Mei (College of Civil Engineering & Architecture, Zhejiang University of Technology)
  • 투고 : 2015.04.22
  • 심사 : 2015.10.10
  • 발행 : 2015.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

To explore the favorable structural system of cable-stayed bridges with ultra-kilometer main span, based on a fully self-anchored cable-stayed bridge with 1400 m main span, a partially earth-anchored cable-stayed bridge scheme with the same main span is designed. Numerical investigation on the dynamic characteristics, aerostatic and aerodynamic stability of both two bridge schemes is conducted, and the results are compared to those of a suspension bridge with similar main span, and considering from the aspect of wind stability, the feasibility of using partially earth-anchored cable-stayed bridge in super long-span bridges with ultra-kilometer main span is discussed. Moreover, the effects of structural design parameters including the length of earth-anchored girder, the number of auxiliary piers in side span, the height and width of girder, the tower height etc on the dynamic characteristics, aerostatic and aerodynamic stability of a partially earth-anchored cable-stayed bridge are analyzed, and their reasonable values are proposed. The results show that as compared to fully self-anchored cable-stayed bridge and suspension bridge with similar main span, the partially earth-anchored cable-stayed bridge has greater structural stiffness and better aerostatic and aerodynamic stability, and consequently becomes a favorable structural system for super long-span bridges with ultra-kilometer main span. The partially earth-anchored cable-stayed bridge can achieve greater stiffness and better wind stability under the cases of increasing the earth-anchored girder length, increasing the height and width of girder, setting several auxiliary piers in side span and increasing the tower height.

키워드

참고문헌

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  2. Nonlinear aerostatic stability analysis of Hutong cable-stayed rail-cum-road bridge vol.23, pp.6, 2016, https://doi.org/10.12989/was.2016.23.6.485
  3. Mechanical Analysis and Study on Structural Parameter of Partially Earth-Anchored Cable-Stayed Bridge Part I: Mechanical Analysis vol.44-47, pp.1662-7482, 2010, https://doi.org/10.4028/www.scientific.net/AMM.44-47.1898
  4. Mechanical Analysis and Study on Structural Parameter of Partially Earth-Anchored Cable-Stayed Bridge Part II: Parametric Study vol.44-47, pp.1662-7482, 2010, https://doi.org/10.4028/www.scientific.net/AMM.44-47.1906
  5. The Reasonable Finished Dead State Research of Partially Earth-Anchored Cable-Stayed Bridge vol.255-260, pp.1662-8985, 2011, https://doi.org/10.4028/www.scientific.net/AMR.255-260.1319
  6. Non-Gaussian approach for equivalent static wind loads from wind tunnel measurements vol.25, pp.6, 2017, https://doi.org/10.12989/was.2017.25.6.589
  7. Study of seismic performance of super long-span partially earth-anchored cable-stayed bridges vol.72, pp.1, 2015, https://doi.org/10.12989/sem.2019.72.1.099
  8. Experimental and numerical investigation of reinforced concrete beams containing vertical openings vol.72, pp.3, 2015, https://doi.org/10.12989/sem.2019.72.3.383
  9. Study on the Effects of Pedestrians on the Aerostatic Response of a Long-Span Pedestrian Suspension Bridge vol.25, pp.10, 2015, https://doi.org/10.1007/s12205-021-2127-x