Flexural load-carrying capacity of H-shaped steel beams strengthened with FRP sheet

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  • FRPシートを用いて曲げ補強したH形鋼梁の曲げ耐荷性状
  • FRP シート オ モチイテ マゲ ホキョウ シタ Hガタコウリョウ ノ マゲ タイカ セイジョウ

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Abstract

In this study, in order to investigate flexural load-carrying behavior of H-shaped steel beams strengthened with FRP sheet, four-point static loading tests of flexural strengthened H-shaped steel beams were conducted. Here, Aramid FRP (AFRP) sheet, Polyethylene terephtalate FRP (PFRP) sheet, and thin steel plate were tried to be used as strengthening material. From this experiment, following results were obtained: 1) bonding performance of AFRP sheet can be kept even if the beam is severely deflected, and then the maximum bonding shear stress obtained from this experiment reached at 13 MPa; 2) the larger the unit mass of FRP sheet is, the greater the yield and maximum loads are; 3) in the case of applying AFRP sheet with PFRP sheet, bonding shear stress may be able to be decreased.

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