CN210086650U - A wood-reinforced concrete composite beam - Google Patents

Abstract

The utility model relates to a wood-reinforced concrete composite beam, which consists of a reinforced concrete flange plate (1), a wood beam (2) and a concrete haunch part (3), and is characterized in that the reinforced concrete flange plate (1) consists of an erection bar (4), a longitudinal steel bar (5), a top stud (6), two side studs (7), a bent steel bar (8), a stirrup (9) and concrete (10); the concrete haunch part (3) is composed of longitudinal steel bars (5), concrete (10) and a steel bar mesh (11). The utility model discloses a concrete and wooden beam are pour and are formed the composite beam structure, utilize top peg and both sides peg to add the shear force connecting piece of armpit part as wooden beam and reinforced concrete flange board and concrete for shearing resistance and bending resistance of roof beam itself obtain increasing substantially, are applicable to existing wooden structure and consolidate and the roof beam component and the wooden floor system that mixes of well, small-size wood-concrete structure bridge.

Description

A wood-reinforced concrete composite beam

technical field

The utility model belongs to the field of building wood structures, in particular to a wood-reinforced concrete composite beam.

Background technique

From the 1980s, people began to pay more attention to the ecological and sustainable development of buildings. As a natural building material with low energy consumption, renewable and easy to decompose, wood has once again attracted people's attention, but the wood structure is limited in terms of span and structural form. Therefore, in order to make up for the shortcomings of the wood structure itself, the form of combined wood structure is often used in the design. The most common wood composite structure is the wood-reinforced concrete composite structure formed by the combination of wood and reinforced concrete.

The wood-reinforced concrete composite beam is the use of anchored shear connectors to connect the wood and concrete as a whole to be stressed together. It gives full play to the good tensile strength of wood and the excellent compressive strength of reinforced concrete, and the strength and stiffness of the material. have been fully utilized.

The wood-reinforced concrete composite beam is used to add haunches on both sides of the wooden beam, which further improves the torsion resistance and bending performance of the wood-reinforced concrete composite beam, and the overall stability is good; at the same time, the use of wood beams also solves the problem of concrete beams. Self-heavy, long maintenance period, and poor recycling of demolition waste.

Utility model content

Technical scheme: The purpose of this utility model is to provide a kind of wood-reinforced concrete composite beam, solve the technical defects such as poor flexural resistance, self-heavy weight, long maintenance period and so on of concrete in the concrete beam structure, and give full play to the light weight, high strength and earthquake resistance of wood beams. At the same time, the concrete addition of the haunches on both sides of the wooden beam improves the torsion resistance and bending resistance of the wood-reinforced concrete composite beam, avoiding the adverse effect of eccentric compression of the beam, and is suitable for existing wooden structures. Reinforcement and beam components and wood-concrete floor systems of medium and small wood-concrete bridges.

The technical scheme of the utility model: a wood-reinforced concrete composite beam, which is composed of a reinforced concrete flange plate, a wooden beam and a concrete haunch part, and is characterized in that the reinforced concrete flange plate is composed of a frame erection bar, a longitudinal steel bar, a top bolt Nails, studs on both sides, bent steel bars, stirrups and concrete are composed together; the concrete haunch part is composed of longitudinal steel bars, concrete and steel mesh; the top studs are the shear connections between the wooden beam and the reinforced concrete flange plate. The bolts on both sides are the shear connections between the wooden beam and the concrete haunch.

The wood-reinforced concrete composite beam is characterized in that the height of the concrete haunch part is 1/5-1/4 of the height of the wood beam.

The wood-reinforced concrete composite beam is characterized in that the top pegs and the two side pegs are of different specifications.

The wood-reinforced concrete composite beam is characterized in that the effective depth of the top pegs nailed into the wooden beam should be greater than one quarter of the length of the top pegs and less than one third of the length of the top pegs.

The wood-reinforced concrete composite beam is characterized in that the effective depth of the pegs on both sides into the wooden beam should be greater than one-fourth of the length of the pegs on both sides, and less than one-third of the length of the pegs on both sides. one.

In the component of the utility model, the stud serves as a shear connector to ensure the normal performance of the flexural resistance of the wood-reinforced concrete composite beam, and the concrete haunch part plays a role of ensuring that the wood-reinforced concrete composite beam has sufficient torsion resistance. The reinforced concrete flange plate and the wooden beam play a load-bearing role.

Beneficial effects: The utility model overcomes the deficiencies of traditional concrete beams and has the following beneficial effects:

(1) In the wood-reinforced concrete composite beam, the concrete part is formed by pouring concrete through the steel mesh, which improves the overall stability and torsional performance of the wood-reinforced concrete composite beam.

(2) The wood-reinforced concrete composite beam uses studs as shear connectors to improve the shear resistance and flexural performance of the beam itself. At the same time, the studs are nailed into the wood beam before pouring. Make the concrete and the wooden beam surface more closely combined, not easy to crack.

(3) The use of wood beams in wood-reinforced concrete composite beams greatly reduces the self-weight of the beams, and at the same time gives full play to the advantages of wood beams with light weight, high strength, strong earthquake resistance and recyclability. At the same time, compared with traditional concrete beam structures, wood beams are used. The investment cost is lower, the cost performance is higher, and the appearance is more beautiful.

(4) The wood-reinforced concrete composite beam has a lighter self-weight, which reduces the construction cost of the foundation, saves scaffolding and formwork during construction, and shortens the construction period.

(5) The wood-reinforced concrete composite beam has a large bearing capacity per unit weight, and has good elasticity and toughness.

Description of drawings

Figure 1 is a cross-sectional view of a wood-reinforced concrete composite beam;

Figure 2 is an overall cross-sectional view of a wood-reinforced concrete composite beam;

Figure 3 is an elevation view of a wood-reinforced concrete composite beam;

Figure 4 is a perspective view of a wood-reinforced concrete composite beam.

In the accompanying drawings 1 to 4, 1 is a reinforced concrete flange plate; 2 is a wooden beam; 3 is a concrete haunch part; 4 is an erection bar; 5 is a longitudinal steel bar; Side studs; 8 is the bent steel bar; 9 is the stirrup; 10 is the concrete; 11 is the steel mesh.

Detailed ways

The present utility model will be described in detail below according to the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1 to 4, the utility model proposes a wood-reinforced concrete composite beam, which is composed of a reinforced concrete flange plate 1, a wooden beam 2 and a concrete haunch part 3, and is characterized in that the reinforced concrete flange plate 1 It is composed of erecting bars 4, longitudinal reinforcing bars 5, top studs 6, studs on both sides 7, bending bars 8, stirrups 9 and concrete 10; the concrete haunch part 3 is composed of longitudinal reinforcing bars 5, concrete 10 and steel mesh 11; the top stud 6 is the shear connection between the wooden beam 2 and the reinforced concrete flange plate 1, and the two side studs 7 are the shear connection between the wood beam 2 and the concrete haunch part 3 (as shown in Figure 1).

The height of the concrete haunch part 3 is 1/5-1/4 of the height of the wooden beam 2 .

The effective depth of the top peg 6 nailed into the wooden beam 2 should be greater than one quarter of the length of the top peg 6 and less than one third of the length of the top peg 6 (as shown in Figure 2).

The effective depth of the bolts 7 on both sides into the wooden beam 2 should be greater than a quarter of the length of the bolts 7 on both sides, and less than one-third of the length of the bolts 7 on both sides (as shown in Figure 2).

The top pegs 6 and the two side pegs 7 on the wooden beam 2 adopt different specifications respectively, and the nominal diameter of the top peg 6 is larger than the nominal diameter of the two side pegs 7 (as shown in FIG. 3 ).

Claims (5)

1. A wood-reinforced concrete composite beam is composed of a reinforced concrete flange plate (1), a wood beam (2) and a concrete haunch part (3), and is characterized in that the reinforced concrete flange plate (1) is composed of erection bars (4), longitudinal reinforcing bars (5), top studs (6), two-side studs (7), bent reinforcing bars (8), stirrups (9) and concrete (10); the concrete haunching part (3) is composed of longitudinal steel bars (5), concrete (10) and a steel bar mesh (11); the top stud (6) is a shear connector of the wood beam (2) and the reinforced concrete flange plate (1), and the studs (7) on the two sides are shear connectors of the wood beam (2) and the concrete haunched part (3).

2. A wood-reinforced concrete composite beam as claimed in claim 1, wherein the height of the concrete haunch part (3) is 1/5-1/4 of the height of the wood beam (2).

3. A wood-reinforced concrete composite beam according to claim 1, wherein the top stud (6) and the side studs (7) are of different specifications, respectively.

4. A wood-reinforced concrete composite beam according to claim 1, wherein the effective depth of the top peg (6) driven into the wood beam (2) is greater than one quarter of the length of the top peg (6) and less than one third of the length of the top peg (6).

5. A wood-reinforced concrete composite beam according to claim 1, wherein the effective depth of the studs (7) on both sides into the wood beam (2) is greater than a quarter of the length of the studs (7) on both sides and less than a third of the length of the studs (7) on both sides.

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