Prefabricated recombined bamboo frame structure

Abstract

This utility model discloses a prefabricated reconstituted bamboo frame structure, including reconstituted bamboo frame columns, reconstituted bamboo frame beams, a concrete foundation, and a floor system. The frame columns are rigidly connected to the foundation via embedded column bases. The frame beams and frame columns are assembled together via steel sleeve connection nodes. The floor system is bolted to the frame beams via L-shaped steel connectors. This utility model features high node rigidity, convenient construction, and is suitable for low-rise prefabricated buildings.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically a fully prefabricated frame structure based on reconstituted bamboo materials, which is particularly suitable for low-rise buildings, rural self-built houses and other scenarios. Background Technology

[0002] Traditional building structures often use high-carbon materials such as concrete and steel, resulting in large carbon emissions. Bamboo, as a carbon-negative resource, has advantages such as high strength and renewability, and reconstituted bamboo composites further improve its mechanical properties. However, existing reconstituted bamboo structures have the following problems:

[0003] Poor versatility of nodes: For example, the groove connection of CN215330545U requires custom processing, and a single column can only connect a single beam, which cannot be adapted to multi-directional beam arrangements.

[0004] Low assembly efficiency: CN118087705A requires on-site pouring of floor slabs, resulting in a long construction period and high carbon emissions.

[0005] Insufficient node stiffness: Traditional mortise and tenon or steel plate connections are difficult to transmit bending moments, resulting in poor structural stability.

[0006] Therefore, there is an urgent need for a standardized, high-rigidity, and easily assembled reconstituted bamboo frame structure. Summary of the Invention

[0007] This application provides a prefabricated reconstituted bamboo frame structure, which solves the problems of complex processing, low node stiffness and insufficient assembly efficiency in the prior art by using standardized steel sleeve connection nodes.

[0008] To solve the above-mentioned technical problems, the technical solution proposed in this application is as follows:

[0009] A prefabricated reconstituted bamboo frame structure includes reconstituted bamboo frame columns, reconstituted bamboo frame beams, a concrete foundation, and a floor system. The frame columns are rigidly connected to the foundation through embedded column feet. The frame beams and frame columns are assembled together through steel sleeve connection nodes. The floor system is bolted to the frame beams through L-shaped steel connectors.

[0010] Preferably, the embedded column base includes a column base steel sleeve embedded in the concrete foundation, and the reconstituted bamboo frame column is inserted into the sleeve and fixed by a first pair of through anchor bolts.

[0011] Preferably, the steel sleeve connection node includes welded and fixed column steel sleeves and beam steel sleeves, and the frame column and frame beam are fastened to the column steel sleeve and beam steel sleeve respectively by a second pair of anchor bolts.

[0012] Preferably, the cross-sectional shape of the column steel sleeve and the beam steel sleeve is rectangular or circular, matching the cross-sectional dimensions of the reconstituted bamboo beam and column.

[0013] Preferably, the concrete foundation is an isolated foundation, a strip foundation, or a pile cap foundation.

[0014] Preferably, the column base steel sleeve is provided with stiffening ribs around it.

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

[0016] High-rigidity connection: The sleeve welding combination is used to tighten the anchor bolts, which improves the bending load-bearing capacity of the joint.

[0017] Fully prefabricated construction: All components are prefabricated in the factory, with no on-site pouring work, thus shortening the construction period.

[0018] Structural stability: Stiffening ribs at the column base enhance local load-bearing capacity and prevent sleeve deformation.

[0019] Flexible expansion: A single column can be connected to multi-directional beams to adapt to complex building layouts. Attached Figure Description

[0020] 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.

[0021] Figure 1 Overall schematic diagram of the frame structure;

[0022] Figure 2 : Sectional view of embedded column base;

[0023] Figure 3 Exploded view of the beam-column steel sleeve connection node;

[0024] Figure 4 Schematic diagram of the floor system composition;

[0025] Figure 5 Detailed drawing of the bolt connection between the L-shaped steel component and the beam. Detailed Implementation

[0026] 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.

[0027] This prefabricated reconstituted bamboo frame structure, as shown in Figure 1-5, mainly consists of the following parts:

[0028] Reconstructed bamboo frame column 101: Rigid connection is achieved between the column base and the concrete foundation 102 through embedded column base.

[0029] Reconstructed bamboo frame beam 103: It is assembled with frame column 101 through steel sleeve connection node 104.

[0030] Floor system 105: assembled with frame beam 103 by bolting using L-shaped steel connectors 106.

[0031] In this embodiment of the application, the embedded column base is constructed as follows:

[0032] The column base steel sleeve 107 is pre-embedded in the concrete foundation 102. The reconstituted bamboo frame column 101 is inserted into the sleeve and fixed by the first pair of through anchor bolts 108. At the same time, stiffening ribs 109 are provided around the column base steel sleeve 107 to improve the local compressive strength. The relevant structure can be referred to in Figure 2.

[0033] In this embodiment of the application, the details of the beam-column connection node are as follows:

[0034] The column steel sleeve 110 and the beam steel sleeve 111 are connected by welding, preferably by full penetration welding. The frame column 101 and the frame beam 103 are respectively fastened to the corresponding sleeve by the second pair of anchor bolts 112. The cross-sectional shape of the steel sleeve is either rectangular or circular. This design is to adapt to the cross-sectional dimensions of the reconstituted bamboo beam and column. The specific structure can be referred to in Figure 3.

[0035] In this embodiment of the application, the floor system is configured as follows:

[0036] The floor system 105 consists of prefabricated reconstituted bamboo floor panels 113 and steel keel 114. The steel keel 114 includes floor beams and floor cross braces, which are connected to the frame beams 103 by L-shaped steel parts 106 and bolts 115.

[0037] In the embodiments of this application, independent foundations, strip foundations, or pile cap foundations may be selected depending on the geological conditions.

[0038] The specific structure of this application is explained in detail below with reference to embodiments:

[0039] S1 Foundation Construction Phase

[0040] The reconstituted bamboo frame column 101 is precisely inserted into the column base steel sleeve 107, and then the first pair of M20 anchor bolts 108 are used for symmetrical fastening. Stiffening ribs 109 are welded to the outer wall of the sleeve, and finally the concrete independent foundation 102 is poured.

[0041] S2 Beam-Column Assembly Steps

[0042] First, weld the column steel sleeve 110 to the end of the frame column 101, and then weld the beam steel sleeve 111 to the end of the frame beam 103.

[0043] Use four sets of M16 second pair of anchor bolts 112 to fasten the sleeve.

[0044] S3 floor installation process

[0045] The floor beams or floor cross braces are bolted to the frame beams 103 via L-shaped steel connectors 106, with bolt spacing of 400mm.

[0046] The material requirements for this application are as follows:

[0047] Reconstituted bamboo: The material strength grade shall not be lower than Ep10, the density shall be ≥0.85g / cm3, and the moisture content shall be controlled at ≤15%.

[0048] Steel sleeve: Made of Q355B steel, with a wall thickness of not less than 8mm.

[0049] Anchor bolts: Grade B bolts with a performance level of 8.8 are used.

[0050] 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 fabricated reconstituted bamboo frame structure, characterized by, The system includes reconstituted bamboo frame columns (101), reconstituted bamboo frame beams (103), concrete foundations (102), and floor systems (105). The frame columns (101) are rigidly connected to the foundations (102) through embedded column feet. The frame beams (103) are assembled with the frame columns (101) through steel sleeve connection nodes (104). The floor systems (105) are bolted to the frame beams (103) through L-shaped steel connectors (106).

2. The structure of claim 1, wherein The embedded column base includes a column base steel sleeve (107) embedded in a concrete foundation (102), and a reconstituted bamboo frame column (101) is inserted into the sleeve and fixed by a first pair of through anchor bolts (108).

3. The structure according to claim 1, characterized in that, The steel sleeve connection node (104) includes a welded and fixed column steel sleeve (110) and beam steel sleeve (111). The frame column (101) and frame beam (103) are fastened to the column steel sleeve (110) and beam steel sleeve (111) respectively by the second pair of anchor bolts (112).

4. The structure according to claim 3, characterized in that, The cross-sectional shape of the column steel sleeve (110) and the beam steel sleeve (111) is rectangular or circular, matching the cross-sectional dimensions of the reconstituted bamboo beam and column.

5. The structure according to claim 1, characterized in that, The concrete foundation (102) is an isolated foundation, a strip foundation, or a pile cap foundation.

6. The structure according to claim 2, characterized in that, The column base steel sleeve (107) is surrounded by stiffening ribs (109).

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