Large-span string wood arch composite structure

Abstract

The utility model relates to the technical field of large-span houses, and discloses a large-span string wood arch combined structure which comprises a wood main beam, the wood main beam is formed by splicing multiple sections, the two ends of the wood main beam are connected with the middle of a steel truss, the upper end of the steel truss is connected with the end of a steel structure upper chord, and a web member is arranged between the steel structure upper chord and the wood main beam. The large-span string wood arch combined structure has the advantages of large span and high bearing capacity of a steel structure roof and the functions of environmental protection, attractiveness, fire prevention and the like of a wood structure, the technical performance of the steel structure and the technical performance of the wood structure can be brought into full play by adopting the innovative design, the durability of the whole structure is improved, and the service life of the whole structure is prolonged. The technical indexes such as the bearing capacity meet the design requirements, the overall span of the wood girder exceeds meters, the wood girder can be applied to modern large-span buildings such as large-span wood structure or wood-concrete structure conference halls, stadiums and natatoriums on a large scale, and the application range of the wood structure buildings is widened.

Description

Technical Field

[0001] This utility model relates to the field of large-span roof technology, specifically a large-span tensioned wooden arch composite structure. Background Technology

[0002] Modern timber structures are increasingly used in the roofs of large-span buildings, especially in stadiums, swimming pools, and conference centers such as the Bird's Nest, where the span exceeds 100 meters. Traditional timber structures cannot meet the requirements for span, compressive strength, and load-bearing capacity, so a new type of large-span roof structure needs to be designed. Utility Model Content

[0003] This invention provides a large-span tensioned timber arch composite structure, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A large-span tensioned timber arch composite structure includes a timber main beam, which is made of multiple spliced ​​sections. The two ends of the timber main beam are connected to the middle of a steel truss, and the upper end of the steel truss is connected to the end of the upper chord of the steel structure. Web members are provided between the upper chord of the steel structure and the timber main beam.

[0006] As a preferred technical solution of this utility model, two adjacent web members are arranged at an angle to each other.

[0007] As a preferred embodiment of this utility model, the wooden main beam is provided with inner steel plates on both sides, the inner steel plates on both sides are connected to the two ends of the prestressed cable, and a strut is provided between the wooden main beam and the prestressed cable.

[0008] As a preferred technical solution of this utility model, two sets of wooden main beams are arranged in parallel, and a wooden secondary beam arranged perpendicular to the wooden main beam is fixedly connected to the middle of the wooden main beam.

[0009] As a preferred embodiment of this utility model, a steel beam is provided on the outer side of the steel truss.

[0010] The present invention has the following advantages:

[0011] This utility model applies to a large-span tensioned wooden arch composite structure. The structure design combines the advantages of steel structure roofs, such as large span and strong load-bearing capacity, with the environmental protection, aesthetics, and fire resistance of wooden structures. The innovative design allows the technical performance of both steel and wooden structures to be fully utilized, improving the overall structural durability and ensuring that technical indicators such as load-bearing capacity meet design requirements. The overall span of the wooden main beam exceeds meters, making it suitable for large-span modern large-span buildings such as conference halls, stadiums, and swimming pools with large-span wooden or wood-concrete structures, thus broadening the application scope of wooden structures. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a large-span tensioned timber arch composite structure.

[0014] Figure 2 for Figure 1 Sectional view of AA.

[0015] Figure 3 for Figure 1 Top view.

[0016] In the diagram: 1. Timber main beam; 2. Steel structure top chord; 3. Web member; 4. Steel truss; 5. Prestressed cable; 6. Infill steel plate; 7. Support rod; 8. Timber secondary beam; 9. Steel beam. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In one embodiment, see Figures 1-3A large-span tensioned timber arch composite structure includes a main timber beam 1, which is fabricated in multiple segments. The main timber beam 1 has a cross-section of 280×1200mm and a straight length of 102m. This large-span main timber beam 1 serves as the lower chord of the composite structure. Due to production and transportation limitations, the 102m span main timber beam 1 can be produced and transported in segments, connected by rebar anchoring. This eliminates exposed connection points, improving overall integrity and aesthetics. The number and length of segments can be freely determined according to actual needs. This patent example uses 5 segments, with 28mm diameter and 405mm deep holes drilled at the ends of each segment for rebar anchoring. 20mm diameter HRB500 hot-rolled ribbed steel bars are used, and Xilide RE500V3 rebar anchoring adhesive is used for the rebar anchoring connection. The two ends of the main timber beam 1 are connected to the middle of a steel truss 4, and the upper end of the steel truss 4 is connected to the end of a steel upper chord 2. A web member 3 is installed between the steel upper chord 2 and the main timber beam 1. Adjacent web members 3 are inclined to each other. The steel structure top chord 2 has a cross-sectional dimension of H400×300×12×16mm, and the web member 3 has a cross-sectional dimension of H200×200×10×14mm. Both the steel structure top chord 2 and the wooden main beam 1 are curved and can bear the load independently. Together with the web members 3, they form multiple triangular stable structures, combining into a whole, which greatly improves the stability and load-bearing capacity of the composite structure. The steel structure top chord 2 and web members 3 are connected to the main building structure by a steel truss 4. Steel beams 9 are set on the outer side of the steel truss 4.

[0019] In one embodiment, steel plates 6 are provided on both sides of the main wooden beam 1, and the two ends of the prestressed cable 5 are connected to the steel plates 6 on both sides. A strut 7 is provided between the main wooden beam 1 and the prestressed cable 5. The prestressed cable 5 (diameter not less than 70mm, preferably 80mm) and the strut 7 are 150mm diameter round steel pipes are provided at the lower part of the main wooden beam 1 to increase the load-bearing capacity and resistance to deformation. The prestressed cable 5 and the strut 7 are respectively connected to the main wooden beam 1 to improve the overall structural durability and make its load-bearing capacity and other technical indicators meet the design requirements.

[0020] In one embodiment, two sets of main wooden beams 1 are arranged in parallel, with secondary wooden beams 8 fixedly connected to the middle of each main wooden beam 1, perpendicular to the main wooden beam 1. To improve structural stability and ensure that the compressive strength and load-bearing capacity of the main wooden beams 1 are similar to those of the upper chord 2 and web members 3 of the steel structure, so that the technical performance of both steel and wooden structures can be fully utilized, in the same set of wooden arch composite structures, the large-span main wooden beams 1 are arranged in pairs, with a spacing of 300mm between the two main wooden beams 1.

[0021] Connection method between the large-span timber main beam 1 and the steel structure upper chord 2 and web members 3:

[0022] (1) No zipper and strut 7 node connection: The lower end of the web member 3 is equipped with an inner steel section with a cross-sectional size of H260×300×14×25mm. The wooden main beam 1 and the inner steel section are connected by 12 bolts with a diameter of 16mm.

[0023] (2) Connection at the end of the zipper: In order to increase the structural stability, in addition to the section steel with cross-section size H260×300×14×25mm set at the lower end of the web member 3 and between the two wooden main beams 1, a 1150×1150mm thick steel plate with a thickness of 50mm is set at the bottom of the steel plate, and a 650×650mm thick steel plate with a thickness of 20mm is set inside the two wooden main beams 1 respectively. The connection between the through steel plate, the steel plate with a thickness of 16mm is achieved by 16 bolts with a diameter of 16mm, and end plates, cover plates, etc. are also provided.

[0024] (3) Connection at strut 7: An inner steel section with a cross-sectional dimension of H260×300×14×25mm is installed at the lower end of the web member 3. The main wooden beam 1 is connected to the inner steel section by 24 bolts with a diameter of 16mm. The lower end of the inner steel section is connected to strut 7 with a diameter of 150mm.

[0025] This utility model applies to a large-span tensioned wooden arch composite structure. The structure design combines the advantages of steel structure roofs, such as large span and strong load-bearing capacity, with the environmental protection, aesthetics, and fire resistance of wooden structures. The innovative design allows the technical performance of both steel and wooden structures to be fully utilized, improving the overall structural durability and ensuring that technical indicators such as load-bearing capacity meet design requirements. The overall span of the main wooden beam exceeds 100 meters, making it suitable for large-span wooden or wood-concrete structure conference halls, stadiums, swimming pools, and other modern large-span buildings, thus broadening the application scope of wooden structures.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A large-span tensioned timber arch composite structure, characterized in that, It includes a wooden main beam, which is made of multiple spliced ​​sections. The wooden main beam is connected in the middle by rebar. The two ends of the wooden main beam are connected to the middle of the steel truss. The upper end of the steel truss is connected to the end of the upper chord of the steel structure. Web members are set between the upper chord of the steel structure and the wooden main beam.

2. The large-span tensioned timber arch composite structure according to claim 1, characterized in that, The two adjacent web members are set at an angle to each other.

3. The large-span tensioned timber arch composite structure according to claim 1, characterized in that, The main wooden beam has steel plates on both sides, which are connected to the two ends of the prestressed tendons. A strut is installed between the main wooden beam and the prestressed tendons.

4. The large-span tensioned timber arch composite structure according to claim 1, characterized in that, Two sets of main wooden beams are set in parallel, and a secondary wooden beam, perpendicular to the main wooden beam, is fixedly connected to the middle of the main wooden beam.

5. A large-span tensioned timber arch composite structure according to claim 1, characterized in that, Steel beams are provided on the outer side of the steel truss.

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