Impact in highway prestressed concrete bridges Article

cited authors

  • Wang, TL; Shahawy, M; Huang, DZ

fiu authors

abstract

  • The purpose of this paper is to study the factors which affect the dynamic behavior of highway prestressed concrete bridges. An HS20-44 truck model with 12 degrees of freedom was developed and used in this analysis. Highway prestressed concrete bridge models with spans of 30, 60, 90, and 120 ft (1 ft = 0.305 m) were designed according to American Association of State Highway and Transportation Officials (AASHTO) standard bridge girders. Two percent of the critical damping was assumed for the bridge. The road surface roughness of the approach roadways and bridge decks was generated from power spectral density (PSD) function for very good, good, average, and poor roads in accordance with International Organization for Standardization (ISO) specification. The impact percentages in moment, deflection, and end shear of the bridge for different bridge span lengths, vehicle speeds, and road surface roughness were calculated and compared with the AASHTO specified values. © 1992.

publication date

  • July 17, 1992

Digital Object Identifier (DOI)

start page

  • 525

end page

  • 534

volume

  • 44

issue

  • 3