Combined beam of FRP, wood and steel reinforced concrete

Abstract

The invention discloses a combined beam of FRP, wood and steel reinforced concrete. The combined beam comprises steel reinforced concrete wing panels, shearing force connecting pieces, wood beams, FRP reinforcing members, FRP cloths, steel ribs and U-shaped stirrups, wherein the shearing force connecting pieces are disposed between the steel reinforced concrete wing panels and the wood beams; the FRP reinforcing members are disposed at the bottom of, in a cross section at the middle and lower part of and in the side surface of the wood beams; the bending zone of the combined beam is reinforced by transverse winding the FRP cloths; and the FRP reinforcing members in the bending shear zone of combined beam are anchored by using the U-shaped stirrups. The combined materials play the functions of their own and work cooperatively, so that cross sectional inertia of the wood-steel reinforced concrete combined beam is greatly increased; and strength and rigidity of original components are effectively increased. The combined beam has the advantages of light self-weight, good mechanical performances, low energy consumption and renewability, and can be widely applied in the fields of reinforcement of ancient architectures and modern wood structures.

Description

technical field [0001] The invention relates to the technical field of novel structures of civil engineering, in particular to a composite beam of FRP, wood and reinforced concrete. Background technique [0002] FRP reinforced wood-reinforced concrete composite beams have not been reported in China, but it is in its infancy abroad. Under the current background of emphasizing the construction of a harmonious society and the development of a sustainable circular economy, new building structural materials that are environmentally friendly, ecological, and low-carbon are an inevitable direction for the development of civil engineering in the future. The traditional strengthening methods such as setting diagonal braces to strengthen nodes, caulking and hooping, and bonding steel (aluminum) to strengthen wood components mainly have disadvantages such as destroying the original appearance, large additional mass, easy corrosion of metal parts, and low yield strength of metal materia...

AI Technical Summary

Problems solved by technology

[0006] Because wood has the disadvantages of large creep, low elastic modulus, and easy to be affected by the environment, etc.

When the reinforced concrete wing plate and the load in the wood-reinforced concrete composite beam act on the wooden beam for a long time, the defects of the wood will be enlarged, causing the stress redistribution of the reinforced concrete wing plate and the wooden beam, and reducing the load of the wood-reinforced concrete composite beam. force performance

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