GB2116907A - Carbon fibre reinforced timber laminated members - Google Patents

Abstract

A structural member e.g., a beam comprises laminations of wood adhesively bonded together, reinforcing fibres of carbon being interposed between the laminations. The use of such a beam reduces the quantity of timber necessary to support a given load.

Description

SPECIFICATION Carbon fibre reinforced structural timber members The invention to date has progressed to the reinforcement of timber beams for use as structural members to support loads. It is anticipated that further development will lead to the reinforcement of all other structural members such as columns, portals, rafters, joists, purlins, piles, runners, walings, braces, ties, stantions, etc etc., the method of constructing a reinforced timber beam is to bond laminations of wood together, and between the required laminations to place a carbon fibre. The laminations are held together by glue, adhesive, or resin.

After bonding of the laminations is complete, the beam is then ready for service in exactly the same manner as any conventional beam.

In operation, it has been found by experiment under laboratory conditions, that a carbon fibre reinforced timber beam is capable of supporting considerably higher loads before collapse occurs.

The advantage of the method is to reduce the quantity of wood required to support a load, and therefore reduce the size of section, so providing a more economical method of supporting a load on a timber beam.

CLAIMS (filed on 17th March 1983) 1. The invention concept of this claim is that of reinforcing timber laminated beams with carbon fibre. Such beams have been found capable of supporting considerably higher loads than conventional solid sawn sections, or laminated sections constructed from similar materials in a similar manner.

2. As claimed in (1) above, but with the word "beam" replaced by any of the following: a) Rafters b) Joists c) Purlins d) Piles e) Runners f) Braces g) Members NB. g) To cover all other forms of structural members.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Carbon fibre reinforced structural timber members The invention to date has progressed to the reinforcement of timber beams for use as structural members to support loads. It is anticipated that further development will lead to the reinforcement of all other structural members such as columns, portals, rafters, joists, purlins, piles, runners, walings, braces, ties, stantions, etc etc., the method of constructing a reinforced timber beam is to bond laminations of wood together, and between the required laminations to place a carbon fibre. The laminations are held together by glue, adhesive, or resin. After bonding of the laminations is complete, the beam is then ready for service in exactly the same manner as any conventional beam. In operation, it has been found by experiment under laboratory conditions, that a carbon fibre reinforced timber beam is capable of supporting considerably higher loads before collapse occurs. The advantage of the method is to reduce the quantity of wood required to support a load, and therefore reduce the size of section, so providing a more economical method of supporting a load on a timber beam. CLAIMS (filed on 17th March 1983)

1. The invention concept of this claim is that of reinforcing timber laminated beams with carbon fibre. Such beams have been found capable of supporting considerably higher loads than conventional solid sawn sections, or laminated sections constructed from similar materials in a similar manner.

2. As claimed in (1) above, but with the word "beam" replaced by any of the following: a) Rafters b) Joists c) Purlins d) Piles e) Runners f) Braces g) Members NB. g) To cover all other forms of structural members.