CN217128514U - Restructured bamboo continuous beam concrete joint with external reinforcing part - Google Patents

Abstract

The utility model relates to a recombined bamboo continuous beam concrete node with an external reinforcing part, which comprises a recombined bamboo beam body I, wherein a first reinforcing steel bar is arranged in the recombined bamboo beam body I along the length direction of the recombined bamboo beam body I, and one end of the first reinforcing steel bar extends out of the recombined bamboo beam body I; a second reinforcing steel bar is arranged in the second recombined bamboo beam body along the length direction of the second recombined bamboo beam body, and one end of the second reinforcing steel bar extends out of the second recombined bamboo beam body; the second reinforcing steel bar and the second reinforcing steel bar are arranged in a manner of being opposite to each other, the extending ends of the second reinforcing steel bar and the second reinforcing steel bar are both provided with threaded structures connected with the straight threaded sleeves, and stirrups are bound to the outer portions of the threaded structures to form initial nodes of the continuous beam; pouring a concrete layer at the initial node of the continuous beam to form a concrete node of the continuous beam; the reinforcing part is fixed outside the concrete joint of the continuous beam and used for reinforcing the rigidity of the concrete joint of the continuous beam. The utility model discloses reach the purpose that increases the node rigidity, the internal force moment of flexure that the roof beam receives distributes and also becomes continuous beam from the letter roof beam, and the stress state that has improved the roof beam makes the moment of flexure distribution of roof beam more reasonable, make full use of material property to reach the mesh that reduces deformation or increase span.

Description

Restructured bamboo continuous beam concrete joint with external reinforcing part

Technical Field

The utility model relates to a civil engineering technical field, more specifically the reorganization bamboo continuous beam concrete node that says so relates to an external reinforcement.

Background

Compared with wood, bamboo has the advantages of greenness, naturalness, high strength, good toughness, short growth period and the like, is known as 'plant reinforcing steel bar' by structural engineers, and various structural engineering bamboo products such as recombined bamboo, glued bamboo and the like appear in recent years. The recombined bamboo is a new bamboo material formed by reorganizing and strengthening bamboo, namely, the bamboo is processed into long strip bamboo strips and bamboo filaments or crushed into bamboo filament bundles, the bamboo filaments are dipped in glue after being dried, the bamboo filaments are dried to reach the required moisture content, and then the bamboo filaments are laid in a mould and thermally cured at high temperature and high pressure to form the section.

Compared with natural bamboo, the recombined bamboo has the advantages of environmental protection, high material utilization rate, high strength, less defects, capability of being processed into various shapes and the like. However, the recombined bamboo has some defects and shortcomings when being used as a recombined bamboo beam bearing vertical load, under the action of general load, the recombined bamboo beam firstly cracks at the position of the defect of the tensile edge, and finally, the recombined bamboo beam is subjected to brittle failure due to the insufficient tensile strength of the material, and at the moment, the compressive strength of the material is not fully exerted; compared with the strength, the elastic modulus of the recombined bamboo is relatively low, and when the recombined bamboo is used as a bending component, the mid-span deflection can reach the limit value before the bearing capacity, so that the recombined bamboo beam is controlled by deformation during design, and the creep deformation of the bamboo can further increase the deformation of the beam and influence the use.

Based on the advantages and disadvantages of the recombined bamboo, the adoption of a reinforcing mode for the recombined bamboo beam is beneficial to improving the bearing capacity, the strength and the integrity of the recombined bamboo beam, and at present, the research on the reinforcing mode of the recombined bamboo beam at home and abroad is mainly divided into two aspects of fiber material reinforcement and reinforcing steel bar reinforcement. The method of pasting fiber materials and the like has certain defects in the manufacturing process, such as long manufacturing period, complex process, high cost, low economic benefit, unfavorable attractiveness of components and the like, the built-in steel bar reinforced recombined bamboo beam just makes up the defects in the reinforcing mode, but rigid connection cannot be realized, only a hinged mode can be made, so that the bending moment distribution of the beam is very uneven, brittle tensile damage is easy to occur, and the material performance cannot be fully exerted.

Therefore, how to provide a recombined bamboo continuous beam concrete node with an external reinforcing part is a problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to provide a reorganization bamboo continuous beam concrete node of external reinforcement, the moment of flexure distribution of solving among the prior art back beam body coupling is very inhomogeneous, takes place fragile to be pulled easily and destroys, and material properties can not obtain full play's problem.

The utility model provides a pair of continuous roof beam concrete node of reorganization bamboo of external reinforcement, include:

the first recombined bamboo beam body is internally provided with a first reinforcing steel bar along the length direction, and one end of the first reinforcing steel bar extends out of the first recombined bamboo beam body;

a second reinforcing steel bar is arranged in the second recombined bamboo beam body along the length direction of the second recombined bamboo beam body, and one end of the second reinforcing steel bar extends out of the second recombined bamboo beam body;

the second steel bar and the second steel bar are arranged in a manner of being opposite to each other, and the extending ends of the second steel bar and the second steel bar are provided with thread structures connected with the straight thread sleeve;

the second steel bar and the first steel bar are bound with the stirrups to form a continuous beam initial node;

the concrete layer is poured at the initial node of the continuous beam to form a concrete node of the continuous beam; and

and the reinforcing part is fixed outside the continuous beam concrete node and is used for reinforcing the rigidity of the continuous beam concrete node.

According to the technical scheme, compare with prior art, the utility model discloses a reorganization bamboo continuous beam concrete node of external reinforcement, reinforcing bar extension region is with pouring the concrete behind the straight thread sleeve section of thick bamboo connection and forming continuous beam concrete node, the problem of traditional reorganization bamboo beam node can only be with articulated defect is solved, the rigid connection of continuous beam can be realized to this kind of mode, reach the purpose that increases the node rigidity, place the reinforcing part in the node outside and proposed the connected mode of a neotype reinforcing node, the internal force moment distribution that the roof beam receives also becomes continuous beam from the letter beam, the stress condition that has improved the roof beam makes the moment of bending distribution of roof beam more reasonable, make full use of material performance, and reach the purpose that reduces deformation or increase span, widen the engineering range of application of reorganization bamboo beam. The aim of enhancing the rigidity of the concrete joint of the recombined bamboo continuous beam is further fulfilled.

Further, the reinforcing part is of a plate body structure.

Further, the plate body structure is made of steel plates.

Further, the plate body structure is fixed outside the continuous beam concrete node through screws.

Furthermore, the plate body structures are two groups and symmetrically fixed on two outer side surfaces of the continuous beam concrete node.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a sectional view of a recombined bamboo continuous beam concrete node with an external reinforcing member in a front view direction according to the present invention;

FIG. 2 is a side elevation cross-sectional view of FIG. 1;

fig. 3 is a schematic structural view of a recombined bamboo continuous beam concrete node with an external reinforcing member provided by the present invention;

in the figure: 1-restructuring a bamboo beam body I, 11-reinforcing steel bar I, 2-restructuring a bamboo beam body II, 21-reinforcing steel bar II, 3-straight thread sleeve, 4-pouring a concrete layer, 5-reinforcing part and 6-screw.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the existing built-in steel bar reinforced recombined bamboo beam, although the built-in steel bars can improve some defects and shortcomings of the recombined bamboo beam, the bearing capacity, the strength and the integrity of the recombined bamboo beam are improved, and meanwhile, certain defects of methods such as fiber material pasting and the like in the manufacturing process can be overcome, rigid connection cannot be realized at the joint of the recombined bamboo continuous beam, and the recombined bamboo continuous beam can only be made into a hinged form, namely a simply supported beam is formed. This makes the distribution of the bending moment of the beam very uneven, the brittle tension failure easily occurs, the material performance can not be fully exerted, and the deflection is large.

The utility model discloses a continuous roof beam component of concrete node can compensate the defect of ordinary reorganization bamboo roof beam, and the advantage of performance reorganization bamboo and concrete material has realized the process that reorganization bamboo roof beam node was by articulated to the rigid coupling simultaneously. Particularly, the embodiment of the utility model discloses external reinforcer's reorganization bamboo continuous beam concrete node, see attached 1-3, include: the recombined bamboo beam body I1 and the recombined bamboo beam body II 2 are arranged, a first reinforcing steel bar 11 is arranged in the recombined bamboo beam body I1 along the length direction of the recombined bamboo beam body I, and one end of the first reinforcing steel bar 11 extends out of the recombined bamboo beam body I1; a second reinforcing steel bar 21 is arranged in the second recombined bamboo beam body 2 along the length direction of the second recombined bamboo beam body, and one end of the second reinforcing steel bar 21 extends out of the second recombined bamboo beam body 2; the second reinforcing steel bar 21 and the first reinforcing steel bar 11 are oppositely arranged, and the extending ends of the second reinforcing steel bar and the first reinforcing steel bar are provided with thread structures connected with the straight thread sleeve 3; the stirrups are bound outside the second steel bar 21 and the first steel bar 11 (the sequence of binding the stirrups and connecting the straight threaded sleeves can be selected according to the operating condition), and a continuous beam initial node is formed; the concrete layer 4 is poured at the initial node of the continuous beam to form a concrete node of the continuous beam; on this basis, the utility model discloses reinforcing part has still been increased, reinforcing part 5 is fixed in the continuous beam concrete node is outside for reinforcing continuous beam concrete node rigidity.

Advantageously, the reinforcing portion 5 is a plate structure made of steel plate. The plate body structure is fixed outside the concrete joint of the continuous beam through a screw 6. Two steel plates are arranged on the upper portion and the lower portion of the node and connected with the end portion of the recombined bamboo through screws, the rigidity of the recombined bamboo continuous beam concrete node can be further enhanced, certain research significance is achieved, and a certain promoting effect is achieved for the follow-up related research of the recombined bamboo continuous beam concrete node.

More advantageously, the plate body structures are two groups and symmetrically fixed on two outer side surfaces of the concrete joint of the continuous beam.

The utility model discloses specifically make the flow as follows:

splitting a bamboo tube into strips, pressing the split bamboo strips into bamboo splits, binding the bamboo splits into bamboo fibers, and dipping the bamboo fibers; and placing the reinforcing steel bars at a preset position, fixing two ends of the reinforcing steel bars by using an anchorage device, laying the impregnated fiber bundles, and integrally hot-pressing to form the recombined bamboo beam. Secondly, the length of the steel bar is larger than that of the recombined bamboo beam body, the steel bar extends out of the recombined bamboo beam body, and the end part of the extended steel bar is provided with external threads, so that the subsequent screwing and straight thread sleeve connection and fixation are facilitated; designing and processing an upper plate body and a lower plate body of the joint, wherein the upper plate body and the lower plate body comprise specific parameters such as size, shape, size, position and the like of the plate bodies. Fourthly, binding stirrups at corresponding positions outside the reinforcing steel bars according to design requirements, and connecting the corresponding reinforcing steel bars between the two adjacent recombined bamboo beams by using straight thread sleeves (the connection sequence of the two can be adjusted according to the operation condition). And fifthly, pouring concrete at the joints and maintaining to form continuous beam connecting joints, then placing two steel plates on the upper and lower parts of the continuous beam connecting joints, and connecting two ends of each steel plate with two adjacent recombined bamboo beam bodies through screws. Under the action of uniform load, the reverse bending point of the continuous beam is located at the position of 1/4 span, and the front view sectional view and the top view sectional view in the drawing only take 1/4 positions on two sides of the continuous beam.

The utility model provides a reorganization bamboo continuous beam its node position transmission moment of flexure ability is more weak, and node connection rigidity is not enough, and the research aspect still limits to at the simply supported roof beam, receives the problem of structural style's restriction in the aspect of the whole deformation of the utilization of material strength and roof beam.

The utility model discloses in built-in reinforcing bar reorganization bamboo roof beam manufacture process, do not need the fluting also unnecessary secondary operation, consequently can guarantee the wholeness of roof beam. The steel bars extending out of the beam ends are reliably connected through the straight thread sleeves, concrete is poured after the stirrups are configured, the restructured bamboo beam nodes are converted from hinged connection to rigid connection, two steel plates are placed on the upper portion and the lower portion of the nodes and connected with the ends of the restructured bamboo through screws, and the rigidity of the restructured bamboo continuous beam concrete nodes can be further enhanced. The utility model discloses the material performance of can make full use of reorganization bamboo avoids fragile pulling to destroy to reach the purpose that reduces deformation or increase span, widen the engineering range of application of reorganization bamboo roof beam. The straight thread sleeve is connected with the built-in steel bar recombined bamboo continuous beam concrete node, so that the defects and the defects of the material can be made up, the excellent performance of the material is exerted, and the rigidity of the recombined bamboo continuous beam concrete node is enhanced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (5)

1. The utility model provides a reorganization bamboo continuous beam concrete node of external reinforcement which characterized in that includes:

the bamboo beam comprises a first recombined bamboo beam body (1), wherein a first reinforcing steel bar (11) is arranged in the first recombined bamboo beam body (1) along the length direction of the first recombined bamboo beam body, and one end of the first reinforcing steel bar (11) extends out of the first recombined bamboo beam body (1);

a second recombined bamboo beam body (2), wherein a second reinforcing steel bar (21) is arranged in the second recombined bamboo beam body (2) along the length direction of the second recombined bamboo beam body, and one end of the second reinforcing steel bar (21) extends out of the second recombined bamboo beam body (2);

the second steel bar (21) and the first steel bar (11) are oppositely arranged, and the extending ends of the second steel bar and the first steel bar are provided with thread structures connected with the straight thread sleeve (3);

the second steel bar (21) and the first steel bar (11) are bound with the stirrups to form a continuous beam initial joint;

the concrete layer (4), the concrete layer (4) is poured at the initial node of the continuous beam, and a continuous beam concrete node is formed; and

and the reinforcing part (5) is fixed outside the continuous beam concrete node, and the rigidity of the continuous beam concrete node can be enhanced.

2. The restructured bamboo continuous beam concrete node with external reinforcement according to claim 1, wherein the reinforcement (5) is of a plate structure.

3. The external reinforcement recombined bamboo continuous beam concrete joint according to claim 2, wherein the plate body structure is made of steel plates.

4. The reconstituted bamboo continuous beam concrete joint with external reinforcement according to claim 3, wherein the plate body structure is fixed outside the continuous beam concrete joint through screws (6).

5. The external reinforcement recombined bamboo continuous beam concrete joint according to claim 3, wherein the plate body structures are two groups and symmetrically fixed on two outer side surfaces of the continuous beam concrete joint.

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