FRP reinforcement of wood elements under bending loads

This paper presents a study on the reinforcement of existing wood elements under bending loads through the use of FRP materials. First, an analytical investigation was conducted on the behavior of a generic FRP-reinforced wood section. This study, in turn, led to a numerical procedure based on non-linear wood properties, suitable for application in the design of FRP reinforcement of old, pre-existing wood beams under differing configurations of intervention layout and materials applied. At the end of this paper results of an experimental campaign are presented and used for comparison with the numerical procedure.

[1]  Antonio Borri,et al.  New Materials for Strengthening and Seismic Upgrading Interventions , 2002 .

[2]  H. J. Larsen,et al.  Tests with glass-fibre reinforcement of wood perpendicular to the grain , 1992 .

[3]  Ezio Giuriani,et al.  Experimental Results On Masonry WallAnchored Ties , 1970 .

[4]  Stefan Hallström Glass fibre reinforced holes in laminated timber beams , 2004, Wood Science and Technology.

[5]  T. Triantafillou,et al.  FRP-REINFORCED WOOD AS STRUCTURAL MATERIAL , 1992 .

[6]  G. Lantos,et al.  The flexural behavior of steel reinforced laminated timber beams. , 1970 .

[7]  T. Triantafillou SHEAR REINFORCEMENT OF WOOD USING FRP MATERIALS , 1997 .

[8]  John Peterson,et al.  Wood Beams Prestressed with Bonded Tension Elements , 1965 .

[9]  Andrew H. Buchanan,et al.  BENDING STRENGTH OF LUMBER , 1990 .

[10]  Thanasis Triantafillou,et al.  Innovative Prestressing with FRP Sheets: Mechanics of Short‐Term Behavior , 1991 .

[11]  C. Sivaramakrishnan,et al.  Testing of Reinforced Concrete Bridges for External Reinforcement , 1989 .

[12]  François W. Kropf,et al.  Strengthening, Retrofitting and Upgrading of Timber Structures with High-Strength Fibres , 2000 .

[13]  Thanasis Triantafillou,et al.  Post-Strengthening of R/C Beams With Epoxy-Bonded Fiber Composite Materials , 1991 .

[14]  G. F. Loedolff,et al.  Laminated Wood Beams Reinforced with Steel Strips , 1968 .

[15]  William M. Bulleit,et al.  Steel‐Reinforced Glued Laminated Timber , 1989 .

[16]  S. Tsai,et al.  Introduction to composite materials , 1980 .

[17]  Jozsef Bodig,et al.  Mechanics of Wood and Wood Composites , 1982 .

[18]  Andrew H. Buchanan,et al.  Combined Bending and Axial Loading in Lumber , 1986 .