CN102926501A - Reinforced laminate vertically embedded with FRP (fiber reinforced Plastic), glued wood beam and column member - Google Patents

Abstract

The invention discloses a vertically embedded FRP reinforced laminate and glued wooden beam and column members, which belong to the field of building structural material manufacturing. The vertically embedded FRP laminate is mainly composed of a wood composite material part and an FRP board part, and can be used to strengthen the glue. The structural performance of wooden beams and columns, replacing the original wooden laminates with such laminates with vertically embedded FRP can significantly improve the load-bearing capacity of glued timber components, and at the same time, the new FRP arrangement can effectively reduce the structural performance of wooden beams and columns. The possibility of peeling damage between FRP and wood glue surface occurred in the traditional FRP reinforcement method. The invention can freely change the FRP reinforcing ratio by changing the thickness of the vertically embedded FRP boards and the number of arrangement bars to meet various reinforcement requirements; the product can be used for reinforcement of glued wood beam and column components.

Description

A reinforced laminate with vertically embedded FRP and glulam beam and column components

technical field

The present invention relates to a reinforced board and glued wood beam and column components, in particular to a reinforced laminate vertically embedded with FRP and glued wood beams and column components, which are mainly (but not exclusively) used for glued wood beams and column components enhanced.

Background technique

Major changes have taken place in today's domestic timber raw material structure, small-diameter low-quality timber will become the main raw material, high-quality logs are decreasing day by day, and prices continue to rise worldwide; at the same time, the development of petrochemicals has reduced the price of structural glue; high-tech processing technology has been successful Applied to the wood processing industry, these have provided good opportunities for the development of modern engineered wood structures in our country.

Engineered wood is a composite wood made of logs as the main raw material, using high-performance environmentally friendly adhesives, and using modern wood processing technology. Engineered wood not only retains the ideal natural characteristics of solid wood sawn timber, but also has the characteristics of uniform material, high allowable stress, good dimensional stability, moisture-proof, anti-corrosion, and flame-retardant; The strength and reliability of the structural building provide a strong guarantee, and the finished product specifications are flexible and can adapt to various needs, which facilitates the realization of factory production and lays the foundation for the sustainable development of forestry.

Modern wood structure buildings mainly use glulam as the main force-bearing components such as beams and columns. The wood has a high strength-to-weight ratio, but its specifications and sizes are limited and there are many knots. Therefore, it still needs to be applied in the field of building structures. Mechanical strength In-depth research on structural performance and other aspects.

Fiber-reinforced composites (FRP) have the advantages of light weight, high strength, corrosion resistance, easy cutting, good construction, and labor saving. The use of FRP to strengthen wood structures has been widely used, not only to improve the bearing capacity, stiffness and Ductility, which also improves the durability and creep properties of timber structures. One of the most critical basic theoretical issues in FRP-reinforced wood structure technology is whether the bonding performance of FRP and wood structures can ensure that the two can work together. The peeling damage of wood and FRP glue joints is also a form of failure of FRP-reinforced glulam components.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a reinforced laminate with vertically embedded FRP. The reinforced glulam member not only improves the bearing capacity, but also increases the ductility of the member. At the same time, the special FRP arrangement avoids The traditional FRP-reinforced large-area wood laminate and FRP board are replaced by the same grain direction of the wood, which effectively reduces the possibility of component damage caused by the peeling of the glue joint between the FRP and the wood.

Another object of the present invention is to provide a glulam beam member with a reinforced laminate vertically embedded with FRP panels.

Another object of the present invention is to provide a glulam post member with reinforced laminates vertically embedded with FRP panels.

The technical scheme adopted in the present invention is: a reinforced laminate with vertically embedded FRP boards, including small-section wood sawn timber and FRP boards, and the FRP boards are vertically embedded into the board surface of the wood boards to form a plurality of FRP boards and a plurality of small-section boards. Reinforced plies of sawn timber glued together at intervals.

Preferably, the FRP plate material can be any one of BFRP (glass fiber reinforced composite material), GFRP (basalt fiber reinforced composite material), and CFRP (carbon fiber reinforced composite material).

Preferably, the thickness of the FRP plate is 1-4mm.

The reinforced laminates with vertically embedded FRP boards can freely change the reinforcement ratio of the laminates by changing the thickness of the FRP boards in the laminates and the number of configurations to meet various reinforcement requirements.

The vertically embedded FRP laminates of the present invention are ideally used for gluing on the tension side or compression side or both sides of tension and compression of glued wood beams, as well as the outer layer of glued wood columns, which can better play its enhancement.

A glued wood beam member using the above-mentioned reinforced laminates vertically embedded with FRP boards, comprising a reinforced laminate vertically embedded with FRP boards and a glued wood beam formed by gluing a plurality of wood laminates, the reinforcement of the vertically embedded FRP boards Laminates are glued to the tension side or compression side or both sides of tension and compression of glulam beams.

A glued wood column member using the above-mentioned reinforced laminates vertically embedded with FRP boards, including a reinforced laminate vertically embedded with FRP boards and a glued wood column formed by gluing a plurality of wood laminates, the reinforcement of the vertically embedded FRP boards Laminates are glued to the outer layers of the glulam columns.

The beneficial effects of the present invention are: the reinforced glulam member of the present invention not only improves the bearing capacity, but also increases the ductility of the member, and at the same time, the special FRP arrangement effectively reduces Possibility of component damage.

Description of drawings

Fig. 1 is the structural schematic diagram of the reinforcing laminate of the present invention vertically embedded FRP board;

Fig. 2 is the gluing schematic diagram of the gluing of the glulam beam member of the reinforced laminate of the vertically embedded FRP board of the present invention;

Fig. 3 is a schematic diagram of the gluing of the glulam column members of the reinforced laminates vertically embedded with FRP boards according to the present invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a reinforced laminate with vertically embedded FRP boards includes small-section wood sawn timber 2 and FRP boards 3, and the FRP boards 3 are vertically embedded in the board surface of the board to form a plurality of FRP boards 3 and a plurality of Reinforcing laminates of sawn timber of small cross-section glued together at 2 intervals.

The material of the FRP board 3 can be any one of BFRP (glass fiber reinforced composite material), GFRP (basalt fiber reinforced composite material), and CFRP (carbon fiber reinforced composite material). The thickness of the FRP board 3 is 1-4mm.

A glued wood beam member using the above-mentioned reinforced laminates vertically embedded with FRP boards, comprising a reinforced laminate vertically embedded with FRP boards and a glued wood beam formed by gluing a plurality of wooden laminates 1, the vertically embedded FRP boards The reinforcing plywood is glued to the tension side or the compression side or both sides of the tension and compression of the glulam beam.

A glued wood column member using the above-mentioned reinforced laminates vertically embedded with FRP boards, including a reinforced laminate vertically embedded with FRP boards and a glued wood column formed by gluing a plurality of wooden laminates 1, the vertically embedded FRP boards Reinforcement plies are glued to the outer layers of the glulam columns.

It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (5)

1. A reinforced laminate vertically embedded with FRP boards, characterized in that: it includes small-section sawn wood (2) and FRP boards (3), and the FRP boards (3) are vertically embedded into the board surface of the board to form a plurality of strips A reinforcement laminate in which an FRP board (3) and multiple small-section sawn timber (2) are glued together at intervals. 2. A reinforced laminate with vertically embedded FRP panels according to claim 1, characterized in that: the material of the FRP panels (3) is any one of BFRP, GFRP and CFRP. 3 . The reinforced laminate with vertically embedded FRP panels according to claim 1 , characterized in that: the thickness of the FRP panels ( 3 ) is 1-4 mm. 4 . 4. A glued wood beam member using a reinforced laminate of vertically embedded FRP boards according to claim 1, 2 or 3, characterized in that: it comprises a reinforced laminate of vertically embedded FRP boards and consists of a plurality of wood laminates (1 ) glued glulam beams, the reinforced laminates with vertically embedded FRP boards are glued to the tension side or compression side or both sides of the glulam beams. 5. A glued wood column member using a reinforced laminate of vertically embedded FRP boards according to claim 1, 2 or 3, characterized in that: it comprises a reinforced laminate of vertically embedded FRP boards and consists of a plurality of wooden laminates (1 ) glued laminated wood column, the reinforced laminate of the vertically embedded FRP board is glued to the outer layer of the glued laminated wood column.

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