A reconstituted bamboo keel column connection structure

Abstract

This utility model discloses a reconstituted bamboo keel column connection structure, including vertical keels, horizontal keels, and wedge-shaped steel nails; the horizontal keels are connected to the side or bottom of the vertical keels; the horizontal keels located at different heights on the same vertical keel are staggered by 50mm-60mm; this structure connects the vertical and horizontal keels with wedge-shaped steel nails, adopting a dual connection mode: when the bottom horizontal keel is connected, the wedge-shaped steel nail penetrates the horizontal keel and is driven into the vertical keel; when the side horizontal keel is connected, the wedge-shaped steel nail penetrates the vertical keel and is driven into the horizontal keel. The staggered arrangement of horizontal keels at different heights on the same vertical keel avoids stress overlap.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated bamboo structure building technology, and specifically to a reconstituted bamboo keel column connection structure, which relates to the connection structure between vertical and horizontal keels in a reconstituted bamboo shear wall. Background Technology

[0002] Reconstituted bamboo, as an environmentally friendly building material, has been widely used in prefabricated buildings, especially in shear wall structures where vertical and horizontal joists form a framework to resist horizontal loads. In existing technologies, horizontal and vertical joists are mostly connected using mortise and tenon joints or angle brackets, which weakens the joist cross-section and reduces the load-bearing capacity and safety of the shear wall. Furthermore, some connection methods lack anti-rotation design, and when using single-screw connections, out-of-plane instability of the joists can easily occur, affecting the overall structural integrity. Therefore, there is an urgent need for a connection method that can ensure efficient force transmission, avoid cross-sectional weakening, and simplify construction. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a reconstituted bamboo keel column connection structure that is reliable in connection and convenient in construction, avoiding cross-sectional weakening and enhancing the efficiency of horizontal force transmission.

[0004] To solve the above-mentioned technical problems, the technical solution proposed in this application is as follows:

[0005] A reconstituted bamboo keel column connection structure includes vertical keels, horizontal keels, and wedge-shaped steel nails;

[0006] The horizontal keel is connected to the side or bottom of the vertical keel;

[0007] The horizontal keels located at different heights on the same vertical keel are staggered by 50mm–60mm;

[0008] When the horizontal keel is located on the lower side, the wedge-shaped steel nail is driven vertically through the horizontal keel and then into the vertical keel;

[0009] When the horizontal keel is located on the side, the wedge-shaped steel nail is driven vertically through the vertical keel and then into the horizontal keel.

[0010] Furthermore, during the lower connection, the wedge-shaped steel nail penetrates vertically through the central area of ​​the transverse keel and is then nailed into the central area of ​​the vertical keel;

[0011] When connecting from the side, there is a horizontal keel on each side of the vertical keel. Wedge-shaped steel nails are driven vertically through the vertical keel at 1 / 3 of its length and then into the center area of ​​the side of the horizontal keel.

[0012] Furthermore, each connection point is equipped with two wedge-shaped steel nails, which are arranged in parallel with a spacing of 80mm–150mm.

[0013] Furthermore, the wedge-shaped steel nail has a pointed front end with a 12°–18° angle, and its surface is provided with spiral patterns with a depth of 0.1–0.3 mm. The nailing depth is ≥30 mm, and the nail head sinks to a depth of 0.5 mm–1 mm.

[0014] Furthermore, the horizontal keel has a rectangular cross-section with a thickness of 40mm–60mm and a width of 120mm–200mm; the vertical keel (1) has a width of ≥150mm.

[0015] Compared with existing technologies, the reconstituted bamboo keel column connection structure of the present invention achieves the following beneficial technical effects:

[0016] This application uses staggered wedge-shaped steel nails to connect the vertical and horizontal keels, effectively avoiding the section weakening problem caused by traditional mortise and tenon joints and significantly improving the load-bearing capacity of the joints; it adopts a dual connection mode (lower side horizontal nailing and side vertical nailing) to ensure efficient transmission of horizontal shear force and vertical load; the wedge-shaped steel nails combined with the staggered design eliminate the risk of out-of-plane rotation of the keel and enhance structural stability; the all-nail joint structure simplifies the construction process, reduces precision requirements, and enables quick assembly, taking into account both safety and construction efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of one of the reconstituted bamboo keel column connection structures proposed in this application;

[0019] Figure 2 This is a schematic diagram of a second method of reconstituted bamboo keel column connection structure according to this application;

[0020] Among them, 1-vertical keel, 2-horizontal keel, 3-wedge-shaped steel nail. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See Figure 1-2This embodiment of the application relates to a reconstituted bamboo keel column connection structure, which includes a vertical keel 1, a horizontal keel 2, and wedge-shaped steel nails 3. The horizontal keel 2 can be connected to the side or the bottom of the vertical keel 1, and the horizontal keels 2 located at different heights on the same vertical keel 1 are staggered by 50mm-60mm to ensure the stability and uniform stress distribution of the structure. When the horizontal keel 2 is located on the bottom, the wedge-shaped steel nail 3 penetrates the horizontal keel 2 vertically and is then nailed into the vertical keel 1; when the horizontal keel 2 is located on the side, the wedge-shaped steel nail 3 penetrates the vertical keel 1 vertically and is then nailed into the horizontal keel 2. This connection method achieves reliable fixation between the vertical keel 1 and the horizontal keel 2.

[0023] Regarding the specific connection node construction, for lower-side connections, wedge-shaped steel nails 3 penetrate vertically through the center of the horizontal keel 2 and are then driven into the center of the vertical keel 1. This ensures even distribution of connection force and avoids localized stress concentration. For side connections, a horizontal keel 2 is installed on each side of the vertical keel 1, and wedge-shaped steel nails 3 penetrate vertically through one-third of the length of the vertical keel 1 and are then driven into the center of the side of the horizontal keel 2. This arrangement effectively enhances the structure's lateral force resistance.

[0024] To further enhance the strength and reliability of the connection points, each connection point is equipped with two wedge-shaped steel nails 3, arranged in parallel with a spacing of 80mm–150mm. This double-nail connection method provides redundant connection force, preventing structural damage due to the failure of a single steel nail.

[0025] Regarding the specific construction of the wedge-shaped steel nail 3, its front end has a 12°–18° pointed angle. This pointed angle design facilitates the smooth driving of the steel nail into the reconstituted bamboo material, reducing damage to the material. The surface of the steel nail has a spiral groove with a depth of 0.1–0.3 mm. This spiral groove increases the friction between the steel nail and the reconstituted bamboo material, improving the pull-out resistance of the connection. The driving depth of the wedge-shaped steel nail 3 is ≥30 mm to ensure sufficient anchoring force, while the nail head sinking depth is controlled within 0.5 mm–1 mm to keep the connection surface flat and prevent the nail head from protruding and affecting subsequent construction or use.

[0026] In terms of component dimensions, the horizontal keel 2 adopts a rectangular cross-section with a thickness of 40mm–60mm and a width of 120mm–200mm. This size design can meet the strength and stiffness requirements of horizontal keels in general building structures. The vertical keel 1 has a width of ≥150mm to ensure that it can provide sufficient load-bearing capacity to support the weight and load of the entire structure.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rebar bamboo column connection structure, characterized in that: It includes vertical keel (1), horizontal keel (2) and wedge-shaped steel nails (3); The horizontal keel (2) is connected to the side or underside of the vertical keel (1); The horizontal keels (2) located at different heights of the same vertical keel (1) are staggered by 50mm–60mm; When the horizontal keel (2) is located on the lower side, the wedge-shaped steel nail (3) is driven vertically through the horizontal keel (2) and then into the vertical keel (1); When the horizontal keel (2) is located on the side, the wedge-shaped steel nail (3) is driven vertically through the vertical keel (1) and then into the horizontal keel (2).

2. The reconstituted bamboo keel column connection structure according to claim 1, characterized in that: When connecting the lower side, the wedge-shaped steel nail (3) is driven vertically through the central area of ​​the horizontal keel (2) and then nailed into the central area of ​​the vertical keel (1); When connecting the sides, there is a horizontal keel (2) on each side of the vertical keel (1). The wedge-shaped steel nail (3) is driven vertically through 1 / 3 of the length of the vertical keel (1) and then nailed into the center area of ​​the side of the horizontal keel (2).

3. The reconstituted bamboo keel column connection structure according to claim 1 or 2, characterized in that: Two wedge-shaped steel nails (3) are provided at each connection point. The two wedge-shaped steel nails (3) are arranged in parallel with a spacing of 80mm–150mm.

4. The reconstituted bamboo keel column connection structure according to claim 1, characterized in that: The wedge-shaped steel nail (3) has a 12°–18° pointed front end and a spiral pattern with a depth of 0.1–0.3 mm on its surface. The nailing depth is ≥30 mm and the nail head sinks to a depth of 0.5 mm–1 mm.

5. The reconstituted bamboo keel column connection structure according to claim 1, characterized in that: The horizontal keel (2) has a rectangular cross section with a thickness of 40mm–60mm and a width of 120mm–200mm; the vertical keel (1) has a width of ≥150mm.

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