A bamboo-based composite structure building profile

Abstract

The utility model discloses a bamboo-based composite building profile, comprising a bamboo core layer, wherein the bamboo core layer is composed of hollow round bamboos arranged in a staggered manner according to large and small ends, a bamboo winding layer is arranged on the periphery of the bamboo core layer, the bamboo winding layer is fixedly connected to the bamboo core layer through an adhesive layer, the bamboo winding layer and the bamboo core layer are fixedly connected to form a profile, the bamboo winding layer comprises a multi-layer bamboo strip curtain, the bamboo strip curtain is composed of a plurality of bamboo strips arranged side by side and bonded to a connecting piece, or the bamboo strip curtain is a continuous bamboo strip curtain formed by weaving a plurality of bamboo strips and a connecting piece. The bamboo strips naturally have good mechanical properties of tensile strength along the grain, so as to enhance the bending strength and rigidity of the profile, and greatly improve the bearing capacity of the bamboo-based profile.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a building profile with a bamboo-based composite structure. Background Art

[0002] my country is rich in bamboo resources, and bamboo applications are developing in multiple fields and high value-added areas, achieving remarkable results. Based on the mechanical properties of bamboo structural materials, bamboo is suitable for the field of civil engineering and can be processed into excellent materials for civil engineering. The main application methods are:

[0003] (1) The direct application of round bamboo has the advantages of high yield and full use of the excellent characteristics of bamboo. After solving problems such as corrosion and cracking, it has been widely used in some fields such as house construction, flooring and furniture manufacturing.

[0004] (2) Bamboo strip reorganization technology is a process in which bamboo strips are longitudinally rolled to create multiple cracks, and then glued, assembled, and hot-pressed or cold-pressed to form a material. The material has high density and strength and can be used for a variety of purposes, such as making outdoor flooring.

[0005] (3) The multi-dimensional reconstruction of bamboo materials is a processing technology that involves polygonizing the surface of bamboo poles and then extending them longitudinally and widening them horizontally.

[0006] For example, bamboo buildings are the residences of ordinary people. The main material is round bamboo. The direct application of round bamboo is mainly used. The round bamboo is simply processed and combined into columns, beams, wall panels, etc. The building structure has a low bearing capacity and needs frequent maintenance. It is suitable for low-rise buildings with simple residential functions. In recent years, designers have applied the original multi-faceted reorganization technology of bamboo materials to explore the construction of some large buildings. After the surface of the bamboo poles is polygonized, they are extended longitudinally and spliced ​​horizontally to build some buildings with strong structural stress.

[0007] Currently, architects are exploring bamboo strips (also known as bamboo fiber) reorganization technology and have made great progress. For example, bamboo winding technology can produce circular tubular products such as pipes and pipe galleries, which has made significant progress.

[0008] The other is the bionic reorganization of bamboo materials in their original state, which involves reorganizing bamboo fibers and high-strength adhesives to produce various forms of building products, such as beams, columns, and panels. However, the cost is relatively high, and alternatives to traditional building materials still need to be explored.

[0009] Focusing on the application of bamboo in the field of construction, some researchers have also developed technologies for the combined application of bamboo and traditional building materials. For example, patent application number CN201821359699.0 discloses a prefabricated bamboo tube lightweight concrete composite structure, which uses a winding process to process bamboo coils into bamboo tubes. The bamboo tubes are used as templates and longitudinal load-bearing and circumferential restraint materials. The lightweight concrete poured in the gap between the bamboo tubes and the hollow round bamboo tubes combines the bamboo tubes and the hollow round bamboo tubes into one, forming an overall combined structure that works together.

[0010] Another patent application number CN201710045330.6 discloses "A fiber-bamboo composite tube concrete composite structure". The bamboo fiber direction of the longitudinal bamboo fiber layer is along the axial direction of the fiber-bamboo composite tube, providing longitudinal bending and tensile bearing capacity of the fiber-bamboo composite tube concrete composite structure. The bamboo fiber direction of the transverse bamboo fiber layer is along the circumferential direction of the fiber-bamboo composite tube, providing circumferential constraint force of the fiber-bamboo composite tube concrete composite structure.

[0011] The applicant believes that the above method can greatly improve the structural stiffness and bearing capacity. However, according to the results of "Experimental Study on the Compressive Performance of Bamboo Tube Concrete" conducted by Wang Huan et al. (Concrete, 2018, No. 4), the above composite material has a significant effect on increasing ductility, but has little effect on improving compressive bearing capacity. Utility Model Content

[0012] In view of the shortcomings of the prior art, the utility model provides a bamboo-based composite structure building profile to improve the structural bearing capacity of the existing bamboo-based building materials. The utility model makes full use of the mechanical properties of round bamboo, takes bamboo-based composite materials and filling adhesive materials as the main constituent materials, and combines bamboo fiber winding technology to construct a building profile. The structural bearing capacity can meet the general construction needs, and the structural earthquake resistance is better than the traditional reinforced concrete structure, and has a wide application prospect in medium and low-rise buildings.

[0013] The technical solution of the utility model is: a building profile of a bamboo-based composite structure, comprising a bamboo core layer, wherein the bamboo core layer is composed of hollow round bamboos arranged in a staggered manner with large and small ends, a bamboo winding layer is arranged on the periphery of the bamboo core layer, the bamboo winding layer and the bamboo core layer are fixedly connected by an adhesive layer, and the bamboo winding layer and the bamboo core layer are fixedly connected to form a profile.

[0014] The building profiles include plates, beams, walls, columns and the like.

[0015] Preferably, the bamboo winding layer comprises a multi-layer bamboo strip curtain, the bamboo strip curtain is composed of a plurality of bamboo strips arranged side by side and bonded to a connecting piece, or the bamboo strip curtain is a plurality of bamboo strips woven with a connecting piece to form a continuous bamboo strip curtain.

[0016] Further preferably, the connecting piece is made of gauze, cotton cloth, carbon fiber or other materials.

[0017] Preferably, the bamboo strip curtain comprises a circumferential bamboo strip curtain, a positive spiral bamboo strip curtain and / or a reverse spiral bamboo strip curtain.

[0018] Further preferably in the embodiment, the three types of bamboo strip curtains are alternately bonded to the periphery of the bamboo core layer to form the bamboo winding layer.

[0019] Preferably, the bamboo core layer includes a first round bamboo and a second round bamboo, the first round bamboo and the second round bamboo are arranged side by side to form a bamboo raft, and the periphery of the bamboo raft is filled with adhesive material.

[0020] Preferably, the first round bamboo includes a first small end and a first large end, the second round bamboo includes a second small end and a second large end, the first small end and the second large end are on the same side, and the first large end and the second small end are on the same side.

[0021] Preferably, a convex strip is provided on one side of the profile, and a groove which fits and engages with the convex strip is provided on the other side of the profile.

[0022] Preferably, a reinforcement layer is provided between the bamboo core layer and the bamboo winding layer.

[0023] Preferably, the longitudinal direction of the reinforcement layer is consistent with the arrangement direction of the first round bamboo and the second round bamboo.

[0024] Preferably, a plurality of steel nails are provided on the top of the profile, the nail heads of the steel nails are connected to the first round bamboo and the second round bamboo, the nail caps of the steel nails extend to the top of the profile, a layer of wire mesh is provided on the top of the profile, and the wire mesh is fixedly connected to the nail caps, a concrete layer is provided on the top of the profile, and the nail caps and the wire mesh are embedded in the concrete layer.

[0025] The reinforcement layer can be a reinforcement plate composed of any other reinforcement in the prior art such as bamboo reinforcement, steel reinforcement, or a bamboo fiber layer, a glass fiber layer, or a carbon fiber layer, so as to further strengthen the tensile strength of the lower part of the profile.

[0026] Preferably, an upper protective layer is provided on the surface of the profile;

[0027] Preferably, a lower protective layer is provided on the surface of the profile.

[0028] Preferably, the surface of the profile is coated with an anti-corrosion coating.

[0029] Preferably, the surface of the profile is coated with fire retardant coating.

[0030] Preferably, the surface of the profile is coated with a waterproof coating.

[0031] Compared with the prior art, the advantages of the utility model are:

[0032] The utility model proposes a bamboo-based composite building profile, comprising a bamboo core layer, wherein the bamboo core layer is composed of hollow round bamboos arranged in a staggered manner with large and small ends, and a bamboo winding layer is arranged on the periphery of the bamboo core layer, wherein the bamboo winding layer is fixedly connected to the bamboo core layer through an adhesive layer, and the bamboo winding layer and the bamboo core layer are fixedly connected to form a profile. The bamboo strips have good natural mechanical properties of tensile strength along the grain, which enhances the bending strength and rigidity of the profile, and greatly improves the bearing capacity of the bamboo-based profile.

[0033] The utility model provides a bamboo-based composite structure building profile whose structural bearing capacity can meet general building needs and whose structural earthquake resistance is better than that of a traditional reinforced concrete structure.

[0034] The detailed structure of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural diagram of Example 1 (plate material) of the utility model;

[0036] Figure 2 This is a cross-sectional view of the bamboo core layer of Example 1 (board) of the utility model;

[0037] Figure 3 This is one of the structural cross-sectional views of Example 1 (plate material) of the utility model;

[0038] Figure 4 This is the second structural cross-sectional view of Example 1 (plate material) of the utility model;

[0039] Figure 5 This is a connection diagram of Example 1 (plate material) of the utility model;

[0040] Figure 6 This is a structural diagram of Example 2 (plate material) of the utility model;

[0041] Figure 7 This is a cross-sectional view of the bamboo core layer of Example 2 (board) of the utility model;

[0042] Figure 8 It is a cross-sectional view of Example 2 (plate material) of the utility model;

[0043] Fig. 9 This is a schematic diagram of the appearance of Example 1 (beam material) of the utility model;

[0044] Fig.10 This is a schematic diagram of the appearance of Example 2 (beam material) of the utility model;

[0045] Fig.11 This is a cross-sectional view of Example 3 (beam material) of the utility model.

[0046] The serial numbers of the components are as follows: 1. Upper protective layer; 2. Bamboo winding layer; 3. First round bamboo; 4. Second round bamboo; 5. Lower protective layer; 6. Adhesive layer; 7. Concrete layer; 8. Wire mesh; 9. Steel nails; 10. Reinforcement layer; 11. Groove; 12. Convex strip. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0049] like Figure 1-Figure 4 and Fig. 9 As shown, a building profile of a bamboo-based composite structure, the building profile described in this embodiment is a board, including a bamboo core layer, the bamboo core layer is composed of hollow round bamboos arranged in a staggered manner with large and small ends, a bamboo winding layer 2 is provided on the periphery of the bamboo core layer, the bamboo winding layer 2 and the bamboo core layer are fixedly connected by an adhesive layer, and the bamboo winding layer 2 and the bamboo core layer are fixedly connected to form a profile.

[0050] Specifically, the bamboo winding layer 2 includes multiple layers of bamboo strips curtains, which are composed of multiple bamboo strips arranged side by side and bonded to a connecting piece. The bamboo strips curtains include circumferential bamboo strips curtains, positive spiral bamboo strips curtains and reverse spiral bamboo strips curtains. The three types of bamboo strips curtains are alternately bonded to the periphery of the bamboo core layer to form a bamboo winding layer. This is just a specific case, and the bamboo strips curtain can also be any one of a circumferential bamboo strips curtain, a positive spiral bamboo strips curtain and a reverse spiral bamboo strips curtain. The connecting piece described in this embodiment is gauze, and can also be other replaceable materials, which are used to fix and connect the bamboo strips curtain.

[0051] The bamboo strip curtain is generally composed of multiple bamboo strips with a length of 4-6 meters arranged in parallel to form a width of 20-50 cm, overlapped and bonded on the connecting piece to form a continuous bamboo strip curtain. According to the arrangement angle of the bamboo strips on the connecting piece, it can be divided into a circumferential bamboo strip curtain, a positive spiral bamboo strip curtain and a reverse spiral bamboo strip curtain. The bamboo strip curtains are alternately wound around the periphery of the bamboo core layer in a circumferential direction, a positive spiral direction, a circumferential direction, a reverse spiral direction and a circumferential direction and bonded to form a bamboo winding layer 2. The bamboo winding layer 2 composed of bamboo strip curtains in various angles enables the profile to better resist radial loads at various angles and improve the overall bearing capacity of the new material body.

[0052] Or the bamboo strips curtain is a continuous bamboo strips curtain formed by weaving a plurality of bamboo strips and a connecting piece, and weaving a plurality of bamboo strips is an existing technology.

[0053] Preferably, the bamboo core layer includes a first round bamboo 3 and a second round bamboo 4 , which are arranged side by side to form a bamboo raft, and the periphery of the bamboo raft is filled with an adhesive material 6 .

[0054] The adhesive layer 6 is made of adhesive materials in the prior art, and is generally made of materials with a linear elasticity close to that of round bamboo, such as phosphogypsum, epoxy cement mortar or concrete.

[0055] Preferably, the first round bamboo 3 includes a first small end and a first large end, the second round bamboo 4 includes a second small end and a second large end, the first small end and the second large end are on the same side, and the first large end and the second small end are on the same side.

[0056] Preferably, a convex strip 12 is provided on one side of the profile, and a groove 11 adapted to engage with the convex strip 12 is provided on the other side of the profile.

[0057] A method for preparing a bamboo-based composite building profile:

[0058] 1. The round bamboo core layer is made of hollow round bamboo materials of basically the same specifications after conventional processing, arranged side by side into bamboo rafts in a required manner, and filled and shaped with adhesive material 6 to form a bamboo core, such as Figure 2 .

[0059] Specifically, the round bamboo is cut into bamboo materials of a certain length, the inner partition at the bamboo node is removed, and after material selection, the first round bamboo 3 and the second round bamboo 4 of basically the same size are obtained. Based on the existence of large and small ends of bamboo materials, the large end of the first round bamboo 3 is closely attached to the small end of the second round bamboo 4, and the small end of the first round bamboo 3 is closely attached to the large end of the second round bamboo 4, thereby ensuring that the thickness and bearing capacity of the bamboo core layer are basically consistent in each section of the bamboo core layer, thereby enhancing the stability of the bamboo core layer under load.

[0060] 2. Bamboo strips curtains are generally made of multiple bamboo strips with a length of 4-6 meters, arranged in parallel to form a width of 20-50 cm, overlapped and bonded to the connecting parts. According to the arrangement angle of the bamboo strips on the connecting parts, they can be divided into circumferential bamboo strips curtains, positive spiral bamboo strips curtains and reverse spiral bamboo strips curtains. Each layer of bamboo strips curtains is alternately wound around the periphery of the bamboo core layer in the circumferential direction, positive spiral direction, circumferential direction, reverse spiral direction, and circumferential direction and bonded to form a bamboo winding layer 2. Since bamboo strips have good mechanical properties of tensile and compressive strength along the grain, when the profile is under load, the bamboo wrapping layer 2 can enhance the bending strength and rigidity of the profile, greatly improving the bearing capacity of the profile, and the bamboo wrapping layer 2 further tightens the first round bamboo 3 and the second round bamboo 4 in the bamboo core layer to prevent the first round bamboo 3 and the second round bamboo 4 from loosening or breaking due to excessive load; by alternately using adhesive to bond the bamboo strips and the connecting pieces, the bonding between the bamboo strips and the bamboo core layer is made stronger, thereby improving the stability of the connection between the bamboo wrapping layer 2 and the bamboo core layer.

[0061] 3. If Figure 4 and Figure 5 As shown, in order to facilitate subsequent installation and use, the profile is plasticized, mainly by using the filling adhesive material 6 to shape the profile into a rectangular body of the design specifications, and solidified to enhance the strength of the filling adhesive material 6, give full play to the bearing capacity of the profile, and perform appropriate trimming on the places with defects or burrs in the appearance; and a convex strip 12 is provided on one side of the profile, and a groove 11 that fits the convex strip 12 is provided on the other side of the profile, which is to facilitate the subsequent connection between the profiles to form a tighter whole and improve reliability. When the profile is used, the board is spliced ​​as needed. Note that after the adhesive material 6 is applied to the concave and convex bites on the side of the board, the concave and convex bites will be tightly engaged.

[0062] In the actual processing, there are two processing procedures; Procedure 1: The factory completely processes the column material, first completes the processing of the bamboo core layer, and then wraps the bamboo strips curtain around the outer periphery of the bamboo core layer to form the bamboo wrapping layer 2. This process can generate a certain pre-tension during the re-wrapping process of the bamboo strips curtain, making the bamboo wrapping layer 2 and the bamboo core layer closer, and having better load performance for the profile. Procedure 2: The factory first processes the bamboo wrapping layer 2 into a cylindrical shape, and then transports it to the construction site, and embeds the existing bamboo materials at the construction site into the center of the bamboo wrapping layer 2 to form a bamboo core layer. This process is suitable for situations where transportation is difficult and there is a large amount of bamboo materials at the construction site, which greatly reduces transportation costs.

[0063] Specifically, the surface of the profile is coated with an anti-corrosion coating to ensure that the durability meets the requirements.

[0064] Specifically, the surface of the profile is coated with a fire retardant coating to ensure that the flame retardant performance meets the requirements.

[0065] Specifically, the surface of the profile is coated with a waterproof coating to prevent rainwater from penetrating into the profile.

[0066] The above-mentioned anti-corrosion coating, fire-retardant coating and waterproof coating form an upper protective layer 1 and a lower protective layer 5 on the periphery of the profile to protect the profile. Example

[0067] See also Figure 7 and Fig.10 On the basis of Example 1, a reinforcing layer 10 can be further provided between the bamboo core layer and the bamboo winding layer. The reinforcing layer 10 can be a reinforcing rib plate formed by arranging reinforcing ribs in parallel in any prior art, such as bamboo ribs, steel bars, etc., or a bamboo fiber layer, a glass fiber layer, and a carbon fiber layer. The longitudinal force of the profile is further strengthened to improve the bearing capacity.

[0068] Specifically, the longitudinal direction of the reinforcing layer 10 is consistent with the arrangement direction of the first round bamboo 3 and the second round bamboo 4 .

[0069] Taking bamboo reinforcement as an example, when constructing the board core, a certain number of full-length bamboo reinforcements are placed under the round bamboo, and the length of the bamboo reinforcements is consistent with the length of the first round bamboo and the second round bamboo. Then, the adhesive material is filled and shaped to form a reinforced bamboo core layer. Through the joint action of the bamboo reinforcements and the bamboo rafts, the tensile properties of the profile are enhanced. Example

[0070] On the basis of Example 1 or Example 2, further, a concrete layer 7 is added on the board surface, such as Figure 6 , Figure 8 and Fig.11 As shown, specifically, a plurality of steel nails 9 are arranged on the top of the profile, the nail heads of the steel nails 9 are nailed into the bodies of the first round bamboo 3 and the second round bamboo 4, the nail caps of the steel nails 9 extend above the profile, a layer of steel mesh 8 is laid on the top of the profile, and the steel mesh 8 is fixedly connected to the steel nails 9, a layer of concrete layer 7 is poured on the top of the profile, and the nail caps and the steel mesh 8 are embedded in the concrete layer 7. The specific process is as follows: after the floor slab is treated with anti-corrosion and fireproofing and installed, the steel nails 9 are nailed to the round bamboo material (the specific arrangement is determined according to needs). A layer of steel mesh 8 is laid on the top of the steel nails 9 and is firmly connected to the steel nails 9, and a layer of concrete layer 7 is poured on the board surface, and it can be used after the concrete layer 7 reaches the strength. The steel nails 9 are laid so that the concrete layer 7 and the bamboo core layer work together to enhance the compressive performance of the profile. The steel mesh 8 is laid to ensure uniform shrinkage of the concrete and prevent cracking of the concrete layer.

[0071] It should be noted that the specific increase in the thickness of the reinforcement layer 10 (the number of bamboo bars) and the increase in the strength and thickness of the concrete layer 7 need to be calculated and determined based on the bearing capacity.

[0072] On this basis, if Figure 1-Figure 8 As shown, when the hollow round bamboos are arranged side by side into bamboo rafts, the profile can be used as a building board, a floor board, a wall board, and can be used for architectural decoration to meet its use and aesthetic functions. Example

[0073] The building profile in this embodiment is a building beam, and its specific structure is as follows: Figure 9-11 As shown, with the structure of Example 1, when the cross section of the bamboo core layer is arranged into a rectangular parallelepiped by hollow round bamboos, the profile can be used as a building beam.

[0074] The building profile of the utility model:

[0075] 1. Green building materials. The main materials used are round bamboo and bamboo strips, which are pure natural green materials.

[0076] 2. Environmentally friendly building materials. The main materials used are round bamboo and bamboo strips as green materials, and synthetic resin as low-pollution materials. Value creation is transformed into benefits, thereby increasing the income of farmers who own bamboo resources.

[0077] 3. Solve the core issues of green construction. The profile itself is a green building material, which is factory-produced and assembled on site, helping my country solve the major problem of transforming buildings to green and prefabricated ones.

[0078] 4. Give full play to the excellent structural performance of bamboo materials. Through the construction of bamboo and epoxy resin materials, anti-corrosion and curing treatment, the structural performance and durability of bamboo materials are improved.

[0079] 5. Easy to standardize, with a wide range of applications, it can produce universal standard profiles, which are convenient for wide selection in construction.

[0080] 6. Adapt to the characteristics of building assembly construction. Compared with cast-in-place floor slabs and wall panels, no formwork and brackets are required for their construction. The floor slabs and wall panels produced in the factory are transported to the site, hoisted according to the construction plan, cut and installed, and then the subsequent construction can be carried out directly. It is environmentally friendly and energy-saving, saves construction time, and effectively reduces the overall construction cost.

[0081] The above is a specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and concept of the utility model, which should be covered by the protection scope of the claims of the utility model.

Claims

1. A bamboo-based composite building profile, comprising a bamboo core layer, characterized in that: The bamboo core layer is composed of hollow round bamboos arranged in a staggered manner with large and small ends. A bamboo winding layer is arranged on the periphery of the bamboo core layer. The bamboo winding layer is fixedly connected to the bamboo core layer through an adhesive layer. The bamboo winding layer and the bamboo core layer are fixedly connected to form a profile.

2. A bamboo-based composite building profile according to claim 1, characterized in that: The bamboo winding layer comprises a multi-layer bamboo strip curtain, which is composed of a plurality of bamboo strips arranged side by side and bonded to a connecting piece, or the bamboo strip curtain is a continuous bamboo strip curtain formed by weaving a plurality of bamboo strips and a connecting piece.

3. A bamboo-based composite building profile according to claim 2, characterized in that: The bamboo strip curtain comprises a circumferential bamboo strip curtain, a positive spiral bamboo strip curtain and / or a reverse spiral bamboo strip curtain.

4. A bamboo-based composite building profile according to claim 3, characterized in that: The three kinds of bamboo strip curtains are alternately bonded to the periphery of the bamboo core layer to form the bamboo winding layer.

5. The bamboo-based composite building profile according to claim 1, characterized in that: The bamboo core layer includes a first round bamboo and a second round bamboo. The first round bamboo and the second round bamboo are arranged side by side to form a bamboo raft. The periphery of the bamboo raft is filled with bonding material.

6. A bamboo-based composite building profile according to claim 5, characterized in that: The first round bamboo includes a first small end and a first large end, the second round bamboo includes a second small end and a second large end, the first small end and the second large end are on the same side, and the first large end and the second small end are on the same side.

7. A bamboo-based composite building profile according to any one of claims 1 to 6, characterized in that: A convex strip is arranged on one side of the profile, and a groove which is matched and engaged with the convex strip is arranged on the other side of the profile.

8. The bamboo-based composite building profile according to claim 5, characterized in that: A reinforcement layer is provided between the bamboo core layer and the bamboo winding layer.

9. A bamboo-based composite building profile according to claim 8, characterized in that: The longitudinal direction of the reinforcing layer is consistent with the arrangement direction of the first round bamboo and the second round bamboo.

10. The bamboo-based composite building profile according to claim 5, characterized in that: A plurality of steel nails are arranged on the top of the profile, the nail heads of the steel nails are connected to the first round bamboo and the second round bamboo, the nail caps of the steel nails extend to the top of the profile, a layer of wire mesh is arranged on the top of the profile, and the wire mesh is fixedly connected to the nail caps, a concrete layer is arranged on the top of the profile, and the nail caps and the wire mesh are embedded in the concrete layer.

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