Mechanical Properties of Composite Beams by FRP


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Title: Mechanical Properties of Composite Beams by FRP

Author(s): E. Sueoka, K. Yasuoka, O. Kiyomiya, M. Yamada, M. Shikamori

Publication: Special Publication

Volume: 138


Appears on pages(s): 133-148

Keywords: beams (supports); composite construction; cracking (fracturing); fiber reinforced plastics; flexural strength; mechanical properties; precast concrete; shear properties; studs; Structural Research

Date: 9/1/1993

For better durability and more rapid construction of reinforced concrete marine structures, the authors designed composite beams that consist of channel-shaped precast concrete forms reinforced with FRP and inner reinforced concrete. In this study, static flexural and shear tests were conducted to ascertain basic mechanical properties and estimate design methods of these types of beams. The flexural capacity coincided well with the values calculated by a conventional design method. The shear capacity was calculated on the conservative side by 20 to 30 percent by using the Niwa equation. No dislocation occurred between the form and inner concrete up to the level of the design load. However, dislocations were observed between them at shear stresses of more than 22 kgf/cm 2, and therefore shear connectors (studs) were needed for their prevention.