Round bamboo composite beam column, joint connecting device and building frame structure of round bamboo composite beam column

Abstract

The utility model discloses a round bamboo composite beam column, a joint connecting device and a building frame structure of the round bamboo composite beam column, the round bamboo composite beam column comprises a spliced round bamboo frame and a fiber winding layer, the spliced round bamboo frame is composed of one or more hollow round bamboos which are arranged in a staggered mode at the large end and the small end, and the fiber winding layer is bound on the periphery of the spliced round bamboo frame; outer connecting rods are arranged in inner cavities of the two ends of each hollow round bamboo, the outer connecting rods and the hollow round bamboos are provided with multiple sets of through holes perpendicular to the axis, connecting screws penetrate through the through holes, the outer connecting rods are connected with the hollow round bamboos through the connecting screws, and the end faces of the outer connecting rods are flush with the end faces of the hollow round bamboos. A connecting hole is formed in the outer end of the external connecting rod, the node connecting device comprises a box body and a cover plate, the structure is simple, and machining and production are easy; the structural strength is convenient and reliable, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a round bamboo composite beam column and a node connection device thereof. Background Art

[0002] my country is rich in bamboo resources, with moso bamboo being the primary bamboo species. With excellent mechanical properties, it is a valuable green, low-carbon building material. Round bamboo is primarily used in architectural structures, primarily in landscape architecture, which offers excellent aesthetic appeal. However, due to its native, hollow structure, round bamboo is subject to complex forces, and connections between bamboo and other materials require specialized devices, significantly limiting its architectural application.

[0003] Regarding round bamboo connections, a large number of domestic technicians have conducted extensive research and achieved certain results. For example, patent number "CN220953902U" discloses "A Raw Bamboo Structural Rod Connection Structure," which includes a bamboo sleeve connector, a first raw bamboo tube, a second raw bamboo tube, a first connecting bolt, and a second connecting bolt. The ends of the bamboo sleeve connector are respectively inserted into the first and second raw bamboo tubes. The first connecting bolt is radially inserted and fixed to the first raw bamboo tube and the bamboo sleeve connector, and the second connecting bolt is radially inserted and fixed to the second raw bamboo tube and the bamboo sleeve connector. Both ends of the bamboo sleeve connector do not exceed the bamboo nodes of the first and second raw bamboo tubes.

[0004] Patent No.: "CN210151959U" discloses "A grouting-filled round bamboo docking structure", which includes a connecting tube and a baffle arranged in the round bamboo, reinforcement members respectively passing through the connecting tube and the baffle, and a fixing assembly located in the connecting tube, wherein a filling cavity is provided between the connecting tube and the baffle, and the filling cavity is filled with a grouting layer; the fixing assembly includes a first fixing plate and a second fixing plate respectively arranged at both ends of the connecting tube and a plurality of connecting rods fixed between the first fixing plate and the second fixing plate.

[0005] Patent No.: "CN210134535U" discloses "A round bamboo docking connection structure", which includes: an upper round bamboo, a lower round bamboo and a connecting round bamboo; the upper round bamboo and the lower round bamboo are docked; the two ends of the connecting round bamboo are respectively placed in the upper round bamboo and the lower round bamboo, and the connecting round bamboo is respectively connected to the upper round bamboo and the lower round bamboo through connecting parts.

[0006] The above patents provide some solutions for connecting round bamboo profiles, especially butting round bamboo profiles, but they do not solve the connection problem between mutually perpendicular beams and columns in round bamboo profiles. Utility Model Content

[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to solve the technical problem that the existing connection structure of beams and columns is not suitable for the connection between round bamboo profiles.

[0008] The technical solution of the utility model is: a round bamboo composite beam column, comprising a spliced round bamboo frame and a fiber winding layer, the spliced round bamboo frame is composed of one or more hollow round bamboos with large and small ends arranged in a staggered manner, and the fiber winding layer is bundled on the periphery of the spliced round bamboo frame; the inner cavities at both ends of each hollow round bamboo are provided with external connecting rods, the external connecting rods and the hollow round bamboo are provided with multiple groups of through holes perpendicular to the axis for connecting screws to pass through, the external connecting rods are connected to the hollow round bamboos through connecting screws, the end face of the external connecting rods is flush with the end face of the hollow round bamboos, the outer end of the external connecting rods is provided with a connecting hole, and a bonding filler layer is provided between the hollow round bamboos and the external connecting rods.

[0009] Preferably, the angles between the different groups of pairs of perforations range from 1° to 90°.

[0010] Preferably, a protective layer is provided on the periphery of the fiber winding layer.

[0011] Preferably, the cylindrical surfaces at both ends of each hollow round bamboo are wrapped with multiple layers of fiber curtains woven from fiber materials, and the fiber curtains and the hollow round bamboo are bonded with resin to form fiber hoops.

[0012] Preferably, the fiber winding layer includes bamboo strips and a connecting piece, the multiple bamboo strips are arranged side by side and bonded to the connecting piece to form a bamboo strip curtain, and the multiple bamboo strip curtains are wound around the cylindrical surface of the column core to form the fiber winding layer.

[0013] Preferably, the length of the external connecting rod is greater than twice the outer diameter of the hollow round bamboo.

[0014] Preferably, internal and external thread nuts are provided in the through holes, and the connecting screw is fixedly connected to the hollow round bamboo through the internal and external thread nuts.

[0015] Preferably, the connecting member comprises gauze, cotton cloth or carbon fiber cloth.

[0016] Preferably, the protective layer is concrete or the like.

[0017] Preferably, the bonding filler of the bonding filler layer is a material of the prior art, and can be selected from a phosphogypsum layer, an epoxy cement mortar layer or a concrete layer.

[0018] A node connection device is used to connect the above-mentioned round bamboo composite beam and column, comprising a box body and a cover plate. The interior of the box body is hollow, and the top and bottom of the box body are missing to form a cylindrical shape. The cover plate can be connected to the top and bottom of the box body. The sides of the box body and the cover plate are provided with through holes corresponding to the round bamboo composite beam and column.

[0019] Preferably, the edge of the cover plate is bent at 90 degrees, and holes for connection and fixation are provided on the edge of the cover plate and the side surfaces of the upper end and the lower end of the box body.

[0020] Preferably, a supporting auxiliary plate is also provided, which includes a connecting plate and a supporting plate. The connecting plate and the supporting plate are perpendicular to each other. The connecting plate is connected to the side of the lower end of the box body, and the supporting plate is used to abut the lower surface of the round bamboo composite beam column connected to the side of the box body.

[0021] When the diameter of the round bamboo composite column is too large, as an alternative, flange plates are provided at the upper and lower ends of the box body, the flange plates are flush with the upper and lower end surfaces of the box body, and the cover plate is fixedly connected to the flange plates.

[0022] A building frame structure comprises the above-mentioned round bamboo composite beams and columns and a node connection device, wherein the end faces of the round bamboo composite beams and columns are respectively fixedly connected to the side, top and bottom of the node connection device to form the building frame structure.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] 1. The utility model provides external connecting rods for connection in the inner cavities at both ends of the round bamboo composite beam and column, which is convenient for connection between beams and columns, and greatly saves the steps of splicing and connecting the round bamboo composite beam and column with the node connection device; the device enables the connection between round bamboo profiles to be assembled, which is convenient and reliable, and greatly improves the construction efficiency.

[0025] 2. The utility model designs a node connection device with a simple structure and low processing cost, and adopts a screw penetration fixation method to enhance the reliability and stability of the connection between the node connection device and the round bamboo composite beam column.

[0026] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the connection between the round bamboo composite beam column and the node connection device of the utility model;

[0028] Figure 2 for Figure 1 Partial cross-sectional view at point A;

[0029] Figure 3 This is a cross-sectional view of the round bamboo composite beam column of the present invention;

[0030] Figure 4 This is the second cross-sectional view of the round bamboo composite beam column of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection between the round bamboo composite beam column of the utility model and another round bamboo composite beam column;

[0032] Figure 6 This is a schematic diagram of the connection between the round bamboo composite beam column and the foundation of the utility model;

[0033] Figure 7 This is the third cross-sectional view of the round bamboo composite beam column of the present invention;

[0034] Figure 8 This is a schematic diagram of the appearance of the node connection device of the utility model;

[0035] Figure 9 This is the first exploded schematic diagram of the node connection device of the present invention;

[0036] Figure 10 This is the second exploded schematic diagram of the node connection device of the present invention;

[0037] Figure 11 This is a schematic diagram of the appearance of the building frame structure of the utility model.

[0038] Component numbers and names: 1. Assembled round bamboo frame; 2. Fiber winding layer; 3. Protective layer; 4. External connecting rod; 5. Connecting screw; 6. Connecting hole; 7. Adhesive filler layer; 8. Round bamboo composite beam; 9. Round bamboo composite column; 10. Box; 11; Cover plate; 111. Upper cover plate; 112. Lower cover plate; 12. Support auxiliary plate; 13. Flange plate; 14. Node connection device. DETAILED DESCRIPTION

[0039] 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. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. The following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have the ordinary meaning understood by persons having ordinary skills in the field to which the present disclosure belongs. The words “including” or “comprising” and the like used in the present disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. The words “upper”, “lower”, “left” and “right” are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0041] See also Figure 3-Figure 7 The utility model provides a round bamboo composite beam column, comprising a spliced round bamboo frame 1 and a fiber winding layer 2. The spliced round bamboo frame 1 is composed of one or more hollow round bamboos with their large and small ends arranged in a staggered manner. Figure 3 A hollow bamboo frame 1 is formed by a hollow bamboo. Figure 7 The invention relates to a spliced round bamboo frame 1 composed of four hollow round bamboos, wherein the fiber winding layer 2 is bound to the periphery of the spliced round bamboo frame 1; a protective layer 3 is provided on the periphery of the fiber winding layer 2; an external connecting rod 4 is provided at the inner cavity at both ends of each hollow round bamboo, and a plurality of pairs of through holes for connecting screws 5 to pass through are provided on the external connecting rod 4 and the hollow round bamboo perpendicular to the axis. The angle between the through holes of different groups ranges from 1° to 90°, and follows A=180° / n, wherein A is the angle and n is the number of pairs of through holes. Figure 4 As shown, in this embodiment, the external connecting rod 4 is provided with two sets of through holes, with the included angle between the two sets of through holes being 90 degrees. The external connecting rod 4 is connected to the hollow round bamboo via a connecting screw 5. The end surface of the external connecting rod 4 is flush with the end surface of the hollow round bamboo. The outer end of the external connecting rod 4 is provided with a connecting hole 6, and an adhesive filler layer 7 is provided between the hollow round bamboo and the external connecting rod 4. Conventional screws and bolts can be screwed into the connecting hole 6 to connect the round bamboo composite beam column to the external environment, equipment, or another round bamboo composite beam column.

[0042] Specifically, the external connecting rod 4 is a ribbed round bamboo metal rod, located in the inner cavity of the hollow round bamboo and coaxial with the hollow round bamboo, and the length of the external connecting rod is greater than 2 times the outer diameter of the hollow round bamboo.

[0043] like Figure 1 and Figure 5 As shown, the round bamboo composite beam column is fixedly connected to the node connection device 14 through bolts, and the round bamboo composite beam column is fixedly connected to another round bamboo composite beam column through a double-headed screw.

[0044] Specifically, the cylindrical surfaces at both ends of each hollow round bamboo are wrapped with multiple layers of fiber curtains woven from fiber materials with a width of 300mm-500mm. The fiber curtains and the fiber curtains and the hollow round bamboo are bonded with resin to form fiber hoops.

[0045] Specifically, the fiber winding layer 2 can be made of bamboo fiber, including bamboo strips and connecting pieces. The multiple bamboo strips are arranged side by side and bonded to the connecting pieces to form a bamboo strip curtain. Multiple bamboo strip curtains are wound around the cylindrical surface of the column core to form the fiber winding layer 2. The bamboo strip curtain is generally composed of multiple bamboo strips with a length of 4-6 meters, arranged longitudinally and side by side to form a width of 20-50 cm, woven horizontally with yarn every 50-60 cm, and overlapped and bonded to the gauze to form a continuous bamboo strip curtain. According to the arrangement angle of the bamboo strips on the gauze, it can be divided into circumferential bamboo strip curtain, positive spiral bamboo strip curtain or reverse spiral bamboo strip curtain. The bamboo strip curtains can also be wound around the periphery of the spliced circular bamboo frame 1 in circumferential, positive spiral, circumferential, reverse spiral, and circumferential directions and bonded to form the fiber winding layer 2. The number of winding layers is 2-5 layers. The fiber winding layer 2 composed of bamboo strip curtains in various angles and directions enables the spliced round bamboo frame 1 to better resist radial loads, thereby improving the toughness and seismic resistance of the round bamboo composite beams and columns.

[0046] It is worth noting that the fiber materials in the fiber curtain and the fiber winding layer 2 can also be glass fiber, carbon fiber or other existing fiber materials that can meet the requirement of restraining the radial deformation of the round bamboo when the round bamboo is subjected to force.

[0047] Specifically, the connecting piece includes gauze, cotton cloth or carbon fiber cloth.

[0048] Specifically, the protective layer 3 is concrete.

[0049] Specifically, the bonding filler layer 7 is selected from materials in the prior art, generally a material with a linear elasticity close to that of round bamboo, such as phosphogypsum, epoxy resin, cement mortar, resin, etc.

[0050] See also Figure 8 , a node connection device is also provided for connecting the above-mentioned round bamboo composite beams and columns, comprising a box body 10 and a cover plate 11. The interior of the box body 10 is hollow, and the upper and lower parts of the box body 10 are missing to form a cylindrical shape. The cover plate 11 can be connected to the upper and lower parts of the box body 10; bolt holes for connection and fixation corresponding to the round bamboo composite beams and columns are provided on the side surfaces of the box body 10 and the cover plate 11. It is worth noting that the above-mentioned bolt holes leave a large space in the vertical direction, which is convenient for adjusting the elevation of the beam during installation.

[0051] Specifically, such as Figure 9The edge of the cover plate 11 is bent 90°. The cover plate 11 includes an upper cover plate 111 and a lower cover plate 112. The upper cover plate 111 is concave downward and the lower cover plate 112 is concave upward. The horizontal plate portion of the cover plate 11 is provided with bolt holes connected to the round bamboo composite column 9, and the vertical plate portion of the cover plate 11 is provided with bolt holes connected to the box body 10.

[0052] Furthermore, a supporting auxiliary plate 12 is provided, which includes a connecting plate and a supporting plate. The connecting plate and the supporting plate are perpendicular to each other. The connecting plate is connected to the side of the lower end of the box body 10. The supporting plate is used to abut the lower surface of the round bamboo composite beam 8 connected to the side of the box body 10. During installation, the beam body can be temporarily placed by the supporting auxiliary plate 12, and it can also play the role of supporting the beam end after installation.

[0053] In the actual construction process, sometimes the column diameter may be too large to match the node connection device 14. If the circumference of the box body 10 is blindly enlarged, the beam and the box body 10 will not fit tightly. Therefore, an alternative solution is proposed, such as Figure 10 The upper and lower ends of the box body 10 are provided with flange plates 13, which are flush with the upper and lower end surfaces of the box body 10. The cover plate 11 is fixedly connected to the flange plates 13. The flange plates 13 extend the area of the upper and lower cover plates 112, so that the node connection device 14 can adapt to the round bamboo composite column 9 with a larger column diameter without changing the box body 10.

[0054] Among them, the connection between the cover plate 11 and the column, the box body 10 and the beam, the upper and lower cover plates 112 and the supporting auxiliary plate 12 and the box body 10 are all connected by bolts. Since no operation can be performed on the inner cavity of the box body 10 after the upper cover plate 111 and the box body 10 are assembled, the screw holes on the inner side of the side plate of the upper end of the box body 10 are welded with nuts before installation. At this time, after the outer bolts pass through the screw holes and are screwed into the built-in nuts, the built-in nuts are already fixed, which helps to tighten the bolts.

[0055] In addition, in order to enhance the vertical bearing capacity of the box body 10, concrete can be poured into the box body 10 after the lower end columns and beams are installed. After the concrete is filled, it is required to be slightly higher than the upper edge of the box body 10. The upper cover plate 111 is installed and connected to the upper end column. Bolts are passed through the bolt holes reserved on the side of the cover plate 11 and the bolt holes reserved on the side of the box body 10, and screwed into the nuts fixed on the inside of the box body 10 to tighten. After the concrete is poured, it will bond with the bolt heads or nuts inside the box body 10. The advantage is that they will not loosen easily, isolate them from air and moisture, and prevent rust. The disadvantage is that it increases the difficulty of disassembly. It is worth noting that concrete should be poured for permanent buildings, but not for turnover buildings.

[0056] See also Figure 11, also provides a building frame structure, including the above-mentioned round bamboo composite beam column and the node connection device 14, the end faces of the round bamboo composite beam column are respectively fixedly connected to the side, top and bottom of the node connection device 14 to form the building frame structure.

[0057] The following are the construction steps of the building frame structure:

[0058] Step 1: During foundation construction, pre-embed the box 10, connect the bottom of the box 10 with the anchor steel bar, and pour concrete to fix it. Sufficient space should be left on the top of the box 10 for installing the upper cover 111.

[0059] Step 2: Bolt the upper cover 111 to the bottom of the round bamboo composite column 9 and secure. Install the lower base, housing 10, and support plate at the top of the column. Bolt the lower base, housing 10, and support plate through the pre-reserved screw holes in the support plate, lower cover 112, and housing 10, securing them with nuts within the housing 10. Assembly can also be done in reverse. Then, bolt the lower base through the pre-reserved screw holes and tighten them into the bolt holes in the round bamboo composite column 9.

[0060] Step 3: Hoist the column of the connecting upper cover plate 111 onto the reserved box 10. After alignment, use bolts to pass through the reserved screw holes on the side of the upper cover plate 111 and the reserved screw holes on the side of the box 10, and tighten them with the nuts fixed to the inner wall of the box 10.

[0061] Step 4: Hoist the round bamboo composite beam 8 to the designated location and temporarily place both ends on the device support plate. Use bolts from the box 10 through the reserved holes on the side wall of the box 10, adjust the position of the beam, align the bolts with the corresponding screw holes in the beam, and tighten them.

[0062] Step 5: Install the second layer of columns. According to steps 2 and 3, connect the round bamboo composite columns 9 to the connecting device, hoist them above the installed columns, align the lower base plate with the box body 10, and tighten them with bolts.

[0063] Step 6: Install the second layer of beams. According to step 4, hoist and install the round bamboo composite beams 8.

[0064] By repeating the above steps 2 to 4, multi-layer column and beam installation can be performed to form a frame structure assembled based on the round bamboo composite columns 9 , the round bamboo composite beams 8 , and the node connection devices 14 .

[0065] In summary, the technical solution of the utility model is of great significance:

[0066] 1. This utility model is a green building material, and the main materials used are round bamboo and bamboo fiber, which are pure natural green materials.

[0067] 2. This utility model is an environmentally friendly building material. The main materials used are round bamboo, bamboo fiber, and bonding and filling materials. All of them are low-pollution and environmentally friendly materials. All materials can be degraded and recycled.

[0068] 3. Low energy consumption and low emission production method. Compared with traditional reinforced concrete structures, the production process has low energy consumption and low carbon emissions.

[0069] 4. Increase agricultural income and promote rural revitalization. my country has abundant bamboo resources, but their utilization is low. Transforming these resources into benefits through value creation will increase the income of farmers who own bamboo resources.

[0070] 5. Solve the core issues of green construction. All materials used are green building materials, factory-produced and assembled on-site, helping my country solve the major issues of transitioning to green and prefabricated construction.

[0071] 6. Fully utilize the excellent structural properties of bamboo. By combining round bamboo with filling and bonding materials to form a closed bamboo material, solidification and corrosion resistance are achieved, improving the structural performance and durability of beams and columns.

[0072] 7. Easy to standardize and widely applicable. Universal standard columns can be produced for widespread adoption in a wide range of buildings, adapting to the characteristics of prefabricated construction. Compared to cast-in-place columns, these columns do not require formwork, supports, or other necessary construction. Factory-produced columns can be transported to the site, hoisted according to the construction plan, and subsequent construction can proceed directly. This is both environmentally friendly and energy-efficient, shortens construction time, and effectively reduces overall construction costs.

[0073] The above is a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and concept of the present invention, should be covered by the protection scope of the claims of the present invention.

Claims

1. A round bamboo composite beam column, characterized by: The invention comprises a spliced round bamboo frame (1) and a fiber winding layer (2), wherein the spliced round bamboo frame (1) is composed of one or more hollow round bamboos with their large and small ends arranged alternately, and the fiber winding layer (2) is bundled around the periphery of the spliced round bamboo frame (1); an external connecting rod (4) is provided in the inner cavity at both ends of each hollow round bamboo, and the external connecting rod (4) and the hollow round bamboo are provided with a plurality of through holes perpendicular to the axis for connecting screws (5) to pass through, the external connecting rod (4) is connected to the hollow round bamboo via the connecting screws (5), the end face of the external connecting rod (4) is flush with the end face of the hollow round bamboo, the outer end of the external connecting rod (4) is provided with a connecting hole (6), and a bonding filler layer (7) is provided between the hollow round bamboo and the external connecting rod (4).

2. The round bamboo composite beam column according to claim 1, characterized in that: The cylindrical surfaces at both ends of each hollow round bamboo are wound with multiple layers of fiber curtains woven from fiber materials, and the fiber curtains and the hollow round bamboos are bonded with resin to form fiber hoops.

3. The round bamboo composite beam column according to claim 1, characterized in that: A protective layer (3) is provided on the periphery of the fiber winding layer (2).

4. The round bamboo composite beam column according to claim 1, characterized in that: The length of the external connecting rod is greater than twice the outer diameter of the hollow round bamboo.

5. The round bamboo composite beam column according to claim 1, characterized in that: The through holes are provided with internal and external thread nuts, and the connecting screw (5) is fixedly connected to the hollow round bamboo via the internal and external thread nuts.

6. A node connection device for connecting the round bamboo composite beam column according to any one of claims 1 to 5, characterized in that: The invention comprises a box body (10) and a cover plate (11), wherein the box body (10) is hollow inside, and the upper and lower parts of the box body (10) are missing to form a cylindrical shape, and the cover plate (11) can be connected to the upper and lower parts of the box body (10), and through holes corresponding to the round bamboo composite beams are provided on the side surfaces of the box body (10) and the cover plate (11).

7. A node connection device according to claim 6, characterized in that: The edge of the cover plate (11) is bent at 90 degrees, and holes for connection and fixing are provided on the edge of the cover plate (11) and the side surfaces of the upper end and the lower end of the box body (10).

8. A node connection device according to claim 7, characterized in that: A supporting auxiliary plate (12) is also provided, the supporting auxiliary plate (12) comprising a connecting plate and a supporting plate, the connecting plate and the supporting plate being perpendicular to each other, the connecting plate being connected to the side surface of the lower end of the box body (10), and the supporting plate being used to abut against the lower surface of the round bamboo composite beam (8) connected to the side surface of the box body (10).

9. A node connection device according to claim 6, characterized in that: The upper and lower ends of the box body (10) are provided with flange plates (13), the flange plates (13) are flush with the upper and lower end surfaces of the box body (10), and the cover plate (11) is fixedly connected to the flange plates (13).

10. A building frame structure, characterized in that: It comprises a round bamboo composite beam column as described in any one of claims 1 to 5 and a node connection device as described in any one of claims 6 to 9, wherein the end faces of the round bamboo composite beam column are respectively fixedly connected to the side, top and bottom of the node connection device (14) to form a building frame structure.

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