阅读说明：本技术 一种冷弯薄壁型钢与木结构组合梁 (Cold-formed thin-walled steel and wood structure combination beam ) 是由 高振闯 何文波 何锐 李凤梅 聂欣 张乔 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种冷弯薄壁型钢与木结构组合梁,包括腹板木方,所述腹板木方的上下两端分别固定设置有上翼缘木方和下翼缘木方,所述上翼缘木方和下翼缘木方上下对称,其与腹板木方之间构成端面呈“工”字形或“H”形结构的木梁；所述木梁上除其上下两端的外部包覆有与其结构吻合的冷弯薄壁型钢构件,该冷弯薄壁型钢构件与所述木梁固定在一起。这种冷弯薄壁型钢与木结构组合梁可以制作为标准化产品使用,用作受力立柱与横梁,连接方便快捷,可以实现大跨度,有效地解决冷弯薄壁型钢构件易失稳的缺陷；且钢木组合结构质量较小、方便施工,尤其适合在交通不便利大型机械设备不便到达的地区作为建筑构件使用,在节省建筑成本的情况下做到轻质高强。(The invention discloses a cold-formed thin-wall section steel and wood structure combined beam which comprises a web batten, wherein an upper flange batten and a lower flange batten are fixedly arranged at the upper end and the lower end of the web batten respectively, the upper flange batten and the lower flange batten are symmetrical up and down, and a wood beam with an I-shaped or H-shaped end surface is formed between the upper flange batten and the lower flange batten; the wood beam is coated with a cold-bending thin-wall steel member matched with the structure of the wood beam except the outer parts of the upper end and the lower end of the wood beam, and the cold-bending thin-wall steel member is fixed with the wood beam. The cold-formed thin-walled steel and wood structure combined beam can be manufactured into a standardized product for use, is used as a stressed stand column and a stressed cross beam, is convenient and quick to connect, can realize large span, and effectively overcomes the defect that a cold-formed thin-walled steel member is easy to destabilize; and the steel-wood composite structure has small mass and is convenient to construct, is particularly suitable to be used as a building component in areas where transportation is inconvenient and large mechanical equipment cannot conveniently reach, and achieves light weight and high strength under the condition of saving the building cost.)

1. The utility model provides a thin-walled cold-formed steel and timber structure combination beam which characterized in that: the composite structure comprises a web batten (2), wherein an upper flange batten (1) and a lower flange batten (3) are fixedly arranged at the upper end and the lower end of the web batten (2) respectively, the upper flange batten (1) and the lower flange batten (3) are vertically symmetrical, and a wood beam with an I-shaped or H-shaped end surface is formed between the upper flange batten and the lower flange batten (3); the wood beam is coated with a cold-bending thin-wall steel member (4) matched with the structure of the wood beam except the outer parts of the upper end and the lower end of the wood beam, and the cold-bending thin-wall steel member (4) is fixed with the wood beam.

2. The cold-formed thin-walled steel and wood structural composite beam of claim 1, wherein: the bottom center of the upper flange batten (1) and the top center of the lower flange batten (3) are provided with connecting grooves (8), and the upper end and the lower end of the web batten (2) are respectively in plug-in fit with the connecting grooves (8) in the upper flange batten (1) and the lower flange batten (3).

3. The cold-formed thin-walled steel and wood structural composite beam of claim 1, wherein: the web batten (2), the upper flange batten (1) and the lower flange batten (3) are fixedly connected together through wood screws (6).

4. The cold-formed thin-walled steel and wood structural composite beam of claim 3, wherein: the wood screws (6) are arranged in parallel at equal intervals along the length direction of the web batten (2).

5. The cold-formed thin-walled steel and wood structural composite beam of claim 1, wherein: the upper flange battens (1) and the lower flange battens (3) are fixedly connected with the cold-formed thin-walled steel members (4) through self-tapping bolts (7).

6. The cold-formed thin-walled steel and wood structural composite beam of claim 5, wherein: the self-tapping bolts (7) are arranged in parallel at equal intervals along the length direction of the upper flange battens (1) and the lower flange battens (3).

7. The cold-formed thin-walled steel and wood structural composite beam of claim 1, wherein: the cladding is in cold-formed thin wall type steel member (4) of web flitch (2) left and right sides and top flange flitch (1) bottom surface and bottom flange flitch (3) top surface with all be in the same place through a plurality of bolt assembly (5) fixed connection between web flitch (2), top flange flitch (1) and bottom flange flitch (3).

8. The cold-formed thin-walled steel and wood structural composite beam of claim 7, wherein: the bolt assembly (5) consists of a T-shaped bolt and a nut in threaded fit with the T-shaped bolt; connecting holes with the same diameter and corresponding positions are formed among the upper flange battens (1), the web battens (2), the lower flange battens (3) and the cold-bending thin-wall steel components (4), and the cold-bending thin-wall steel components (4) pass through the corresponding connecting holes through T-shaped bolts and are tightly fixed and positioned through nuts among the upper flange battens (1), the web battens (2) and the lower flange battens (3).

9. The cold-formed thin-walled steel and wood structural composite beam of claim 8, wherein: the connecting holes arranged on the upper flange battens (1) and the lower flange battens (3) are both countersunk holes, and the heads of the T-shaped bolts penetrating through the connecting holes on the upper flange battens (1) and the lower flange battens (3) are positioned in the countersunk holes.

Technical Field

The invention relates to the field of steel structure buildings, in particular to a cold-formed thin-wall section steel and wood structure combined beam.

Background

In the field of steel structure construction, the cold-formed thin-walled steel structure is widely applied in recent years due to the advantages of high industrialization degree of processing, high manufacturing efficiency, short construction period, less solid waste generated in the construction process, energy conservation, environmental protection and the like.

When the wall thickness of the cold-formed thin-walled steel is between 0.6mm and 1.5mm, the strength grade is Q355 or LQ550, and the effects of light weight and high strength can be realized. However, because the wall thickness of the cold-formed thin-walled steel is too thin, and the width-thickness ratio of the plate is over-limited, the section is easy to buckle and destabilize, the bearing capacity of the section cannot be effectively exerted, the utilization efficiency of the section is low, and the safety coefficient is reduced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cold-formed thin-walled steel and wood structure combined beam, and solving the defects of low bearing capacity and easy deformation and instability of the existing cold-formed thin-walled steel structural member.

In order to solve the technical problems, the invention is realized by the following technical scheme: a cold-formed thin-wall section steel and wood structure combined beam comprises a web batten, wherein an upper flange batten and a lower flange batten are fixedly arranged at the upper end and the lower end of the web batten respectively, the upper flange batten and the lower flange batten are symmetrical up and down, and a wood beam with an I-shaped or H-shaped end surface is formed between the upper flange batten and the lower flange batten; the wood beam is coated with a cold-bending thin-wall steel member matched with the structure of the wood beam except the outer parts of the upper end and the lower end of the wood beam, and the cold-bending thin-wall steel member is fixed with the wood beam.

Furthermore, the bottom center of the upper flange batten and the top center of the lower flange batten are both provided with connecting grooves, and the upper end and the lower end of the web batten are respectively in inserting fit with the connecting grooves in the upper flange batten and the lower flange batten.

Furthermore, the web batten, the upper flange batten and the lower flange batten are fixedly connected together through wood screws.

Furthermore, the wood screw has a plurality of, and it is along the length direction of web flitch equidistant side by side setting.

Furthermore, the outer sides of the left side and the right side of the upper flange batten and the lower flange batten are fixedly connected with the cold-formed thin-walled steel member through self-tapping bolts.

Further, the self-tapping bolts are provided in plurality and arranged in parallel at equal intervals in the longitudinal direction of the upper flange battens and the lower flange battens.

Further, the cold-formed thin-walled steel members coated on the left side and the right side of the web batten, the bottom surface of the upper flange batten and the top surface of the lower flange batten are fixedly connected with the web batten, the upper flange batten and the lower flange batten through a plurality of bolt assemblies.

Further, the bolt assembly consists of a T-shaped bolt and a nut in threaded fit with the T-shaped bolt; connecting holes with the same diameter and corresponding positions are formed among the upper flange battens, the web battens, the lower flange battens and the cold-bending thin-wall steel members, and the cold-bending thin-wall steel members pass through the corresponding connecting holes through T-shaped bolts and are tightly fixed and positioned through nuts.

Furthermore, the connecting holes arranged on the upper flange battens and the lower flange battens are both countersunk holes, and the heads of the T-shaped bolts penetrating through the connecting holes on the upper flange battens and the lower flange battens are positioned in the countersunk holes.

Compared with the prior art, the invention has the advantages that: the cold-formed thin-walled steel and wood structure combined beam can be manufactured into a standardized product for use, is used as a stressed stand column and a stressed cross beam, is convenient and quick to connect, can realize large span, and effectively overcomes the defect that a cold-formed thin-walled steel member is easy to destabilize; and the steel-wood composite structure has small mass and is convenient to construct, is particularly suitable to be used as a building component in areas where transportation is inconvenient and large mechanical equipment cannot conveniently reach, and achieves light weight and high strength under the condition of saving the building cost.

Drawings

FIG. 1 is a sectional view of an end face structure of a cold-formed thin-walled steel and wood structure composite beam of the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of a cold-formed thin-walled steel and wood structure composite beam of the present invention.

In the figure: 1. upper flange battens; 2. web battens; 3. a lower flange batten; 4. cold-bending the thin-walled steel member; 5. a bolt assembly; 6. a wood screw; 7. self-tapping screws; 8. a joining groove.

Detailed Description

The invention is described in detail below with reference to the figures and the detailed description.

Fig. 1 and 2 show a cold-formed thin-walled steel and wood structure composite beam, which comprises a web batten 2, wherein an upper flange batten 1 and a lower flange batten 3 are fixedly arranged at the upper end and the lower end of the web batten 2 respectively, the upper flange batten 1 and the lower flange batten 3 are symmetrical up and down, and a wood beam with an end surface in an i-shaped or H-shaped structure is formed between the upper flange batten 1 and the lower flange batten 3; the wood beam is coated with a cold-bending thin-wall steel member 4 matched with the structure of the wood beam except the outer parts of the upper end and the lower end of the wood beam, and the cold-bending thin-wall steel member 4 is fixed with the wood beam.

In order to facilitate the positioning connection of the web battens 2 with the upper flange battens 1 and the lower flange battens 3, the bottom centers of the upper flange battens 1 and the top centers of the lower flange battens 3 are respectively provided with a connecting groove 8, and the upper ends and the lower ends of the web battens 2 are respectively in inserting fit with the connecting grooves 8 on the upper flange battens 1 and the lower flange battens 3.

In order to fixedly connect the web batten 2 with the upper flange batten 1 and the lower flange batten 3, the web batten 2 is fixedly connected with the upper flange batten 1 and the lower flange batten 3 through wood screws 6.

In order to ensure the stability of the web battens 2 after the connection between the upper flange battens 1 and the lower flange battens 3, a plurality of wood screws 6 are arranged in parallel at equal intervals along the length direction of the web battens 2.

In order to fixedly connect the cold-formed thin-walled steel component 4 with the upper flange battens 1, the web battens 2 and the lower flange battens 3, the outer sides of the left and right sides of the upper flange battens 1 and the lower flange battens 3 are fixedly connected with the cold-formed thin-walled steel component 4 through self-tapping bolts 7; the self-tapping bolts 7 are arranged in parallel at equal intervals along the length direction of the upper flange battens 1 and the lower flange battens 3, so that the stability of the cold-formed thin-wall steel member 4 after connection with the upper flange battens 1 and the lower flange battens 3 is ensured; the cold-formed thin-walled steel members 4 coated on the left side and the right side of the web battens 2 and the bottom surfaces of the upper flange battens 1 and the top surfaces of the lower flange battens 3 are fixedly connected with the web battens 2, the upper flange battens 1 and the lower flange battens 3 through a plurality of bolt assemblies 5; the bolt assembly 5 consists of a T-shaped bolt and a nut in threaded fit with the T-shaped bolt; connecting holes with the same diameter and corresponding positions are formed among the upper flange battens 1, the web battens 2, the lower flange battens 3 and the cold-bending thin-wall steel component 4, and the cold-bending thin-wall steel component 4 penetrates through the corresponding connecting holes through T-shaped bolts and is tightly fixed and positioned through nuts among the upper flange battens 1, the web battens 2 and the lower flange battens 3.

In order to facilitate the construction and assembly of the cold-formed thin-walled steel and the wood structure composite beam, the bolt assembly 5 cannot be installed in an interference mode, connecting holes formed in the upper flange battens 1 and the lower flange battens 3 are both countersunk holes, and the heads of T-shaped bolts penetrating through the connecting holes in the upper flange battens 1 and the lower flange battens 3 are located in the countersunk holes.

When the cold-formed thin-wall section steel and wood structure combined beam is processed and manufactured, connecting holes are formed in an upper flange batten 1 and a lower flange batten 3 in advance according to design positions, a connecting groove 8 is formed in the middle of the upper flange batten 1 and the lower flange batten 3, a web batten 2, the upper flange batten 1 and the lower flange batten 3 are assembled together through the connecting groove 8, and then the upper flange batten 1, the web batten 2 and the lower flange batten 3 are fixedly connected through wood screws 6; after the connection is completed, the cold-formed thin-walled steel member 4 which is pre-perforated according to the design is connected with the upper flange battens 1, the web battens 2 and the lower flange battens 3 through the bolt groups 5, and the parts of the cold-formed thin-walled steel member 4 corresponding to the left and right side surfaces of the upper flange battens 1 and the lower flange battens 3 are fixedly connected with the upper flange battens 1 and the lower flange battens 3 through self-tapping screws 7.

The principle is as follows: when the cold-formed thin-wall steel and the wood structure composite beam (hereinafter referred to as steel-wood composite beam) bear the force, the cross section of the cold-formed thin-wall steel component 4 can locally generate buckling deformation under the action of the force, the local cross section has a destabilization tendency, and the upper flange battens 1, the web battens 2 and the lower flange battens 3 can limit the lateral buckling deformation of the cold-formed thin-wall steel component 4 due to the larger rigidity of the cross sections, so that the stress performance of the cross sections is greatly improved, the bearing capacity of the whole cross section of the steel-wood composite beam can be effectively exerted, and the effects of light weight and high strength are achieved. In order to facilitate application of designers, the steel-wood composite beam can be designed into a standardized component according to a calculation stress result, the beam height and the beam width can be close to those of a national standard H-shaped steel component, standardized design, industrial production and standardized connection are achieved, and engineering efficiency is improved.

The steel-wood composite beam can greatly increase the service span of the cold-formed thin-wall steel beam, greatly reduce the vertical deformation, improve the bearing capacity of the structure, and can be connected with other components through bolts, screws, screw rods and other modes during use, so that the operation is convenient and fast.

The cold-formed thin-walled steel and wood structure combined beam can be manufactured into a standardized product for use, is used as a stressed stand column and a stressed cross beam, is convenient and quick to connect, can realize large span, and effectively overcomes the defect that a cold-formed thin-walled steel member is easy to destabilize; and the steel-wood composite structure has small mass and is convenient to construct, is particularly suitable to be used as a building component in areas where transportation is inconvenient and large mechanical equipment cannot conveniently reach, and achieves light weight and high strength under the condition of saving the building cost.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.