Structural Engineering and Mechanics

  • 제11권3호
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  • Pages.259-272
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  • 2001
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Impact study for multi-girder bridge based on correlated road roughness

  • Liu, Chunhua (Department of Civil and Environmental Engineering, Florida Int'l University) ;
  • Wang, Ton-Lo (Department of Civil and Environmental Engineering, Florida Int'l University) ;
  • Huang, Dongzhou (Structural Research Center, Florida Department of Transportation)
  • 발행 : 2001.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The impact behavior of a multigirder concrete bridge under single and multiple moving vehicles is studied based on correlated road surface characteristics. The bridge structure is modeled as grillage beam system. A 3D nonlinear vehicle model with eleven degrees of freedom is utilized according to the HS20-44 truck design loading in the American Association of State Highway and Transportation Officials (AASHTO) specifications. A triangle correlation model is introduced to generate four classes of longitudinal road surface roughness as multi-correlated random processes along deck transverse direction. On the basis of a correlation length of approximately half the bridge width, the upper limits of impact factors obtained under confidence level of 95 percent and side-by-side three-truck loading provide probability-based evidence for the evaluation of AASHTO specifications. The analytical results indicate that a better transverse correlation among road surface roughness generally leads to slightly higher impact factors. Suggestions are made for the routine maintenance of this type of highway bridges.

키워드

참고문헌

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피인용 문헌

  1. Vehicle-Induced Dynamic Performance of FRP versus Concrete Slab Bridge vol.11, pp.4, 2006, https://doi.org/10.1061/(ASCE)1084-0702(2006)11:4(410)
  2. Recent Research and Applications of Numerical Simulation for Dynamic Response of Long-Span Bridges Subjected to Multiple Loads vol.2014, 2014, https://doi.org/10.1155/2014/763810
  3. A simple finite element model for vibration analyses induced by moving vehicles vol.68, pp.12, 2006, https://doi.org/10.1002/nme.1748
  4. State-of-the-Art Review of Dynamic Impact Factors of Highway Bridges vol.20, pp.5, 2015, https://doi.org/10.1061/(ASCE)BE.1943-5592.0000672
  5. Dynamic and Impact Behavior of Half-Through Arch Bridges vol.10, pp.2, 2005, https://doi.org/10.1061/(ASCE)1084-0702(2005)10:2(133)
  6. Structural behavior FRP-strengthened steel-reinforced concrete slabs under moving-wheel cyclic loads vol.18, pp.2, 2017, https://doi.org/10.1080/13287982.2017.1334334
  7. Field investigation of ultra-high performance concrete shear key in an adjacent box-girder bridge pp.1744-8980, 2019, https://doi.org/10.1080/15732479.2019.1569698