| 摘要 |
The present invention includes wood I-beams with synthetic fiber reinforcement. In a preferred embodiment, a wood I-beam includes an opposed pair of elongated wood flanges and a substantially continuous web positioned between them. In one embodiment (figs. 2-4), the web (58) includes multiple metal tubes (56) that extend between the wood flanges (52, 54) and form a zig zag pattern. The ends (60) of the metal tubes (56) are flattened parallel to the plane of the metal web so the ends (60) can fit within either slots (66) in the top surface (68) of the bottom wood flange (52) or slots in the bottom surface (72) of the top wood flange (54). Metal pins (74) pass through the sides of the wood flanges (52, 54) and the flattened ends (60) of the metal tubes (56) to secure the tubular metal web (58) to the flanges (52, 54). In other embodiments (fig. 6) the web (106) includes oriented strand board (OSB) or plywood. Synthetic reinforcements (86) are adhered to the wood flanges (52, 54) so that the metal pins (74) also pass through the reinforcements (86). The synthetic reinforcements (86) preferably include multiple synthetic fiber strands (90, 92) held within a resin matrix. |
