A recombined bamboo beam-column joint connecting structure

Abstract

The utility model relates to building technical field, concretely is a kind of reconstituted bamboo beam column joint connecting structure, including column, beam body, bearing assembly and assembly component, the bearing assembly includes support flange, side frame, connecting plate, support frame, first bolt and nut, the support flange is provided on column, the side frame is arranged as two groups of symmetry with the arrangement of " the side frame of Chinese character " of " form, two groups of symmetry "Chinese character" side frame " from the two sides of column enclosure, the connecting plate of side frame free end is fastened by first bolt and nut, form the " encircling type fixed " of column-"Chinese character" side frame inner wall and column are attached, can limit the radial movement of column;The plug of beam body end portion is inserted with the support frame on side frame, form the mechanical constraint of " convex-concave cooperation "-compared with traditional " bolt direct connection", the contact area of plug-in structure can increase beam body and support frame, the load dispersed by beam body transmission, avoid the assembly loose caused by local stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a reconstituted bamboo beam-column joint connection structure. Background Technology

[0002] As a "low-carbon, high-performance" green building material, the beam-column joint connection of reconstituted bamboo is the core link that determines the stability, load-bearing capacity, and seismic performance of reconstituted bamboo structures. This joint needs to balance the material characteristics of reconstituted bamboo, which are "high strength but relatively brittle and prone to shrinkage and swelling due to drying and moisture."

[0003] Traditional beam-column joint assembly structures make it difficult to achieve stable assembly of beams and columns. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a reconstituted bamboo beam-column joint connection structure.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a reconstituted bamboo beam-column joint connection structure, comprising a column, a beam, a load-bearing component, and an assembly component. The load-bearing component includes a supporting flange, a side frame, a connecting plate, a support frame, a first bolt, and a nut. The column is provided with a supporting flange. The side frame is arranged in two symmetrical sets in a U-shape. Connecting plates are symmetrically arranged on the front and rear sides of the two free ends of the side frame. The first bolt passes through the corresponding two sets of connecting plates and is connected to the nut. A support frame is also provided on the crossbeam of the side frame. The beam is connected to the support frame through the assembly component.

[0008] To facilitate the stable assembly of the beam and column, this utility model is improved by including an insertion block and a second bolt in the assembly assembly. The beam is provided with an insertion block that connects to the support frame, and the insertion block is also provided with a second bolt that connects to the column and the side frame.

[0009] Preferably, the side frame is provided with a first reinforcing rib that is connected to the support frame.

[0010] Preferably, the insert block is provided with a second reinforcing rib that is connected to the beam.

[0011] Preferably, the column is further provided with a third reinforcing rib connected to the supporting flange.

[0012] Preferably, a mounting base is also provided below the column, and mounting holes are provided at the four corners of the mounting base.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a reconstituted bamboo beam-column joint connection structure, which has the following beneficial effects:

[0015] The reconstituted bamboo beam-column joint connection structure has two sets of symmetrically arranged "U-shaped side frames" that surround the column from both sides. The connecting plates at the free ends of the side frames are fastened by the first bolt and nut to form a "circumferential fixation" for the column. The inner wall of the side frame fits against the column, which can limit the radial movement of the column.

[0016] The inserts at the ends of the beams are inserted into the support frames on the side frames, forming a mechanical constraint of "convex-concave fit" - compared with the traditional "direct bolt connection", the insert structure can increase the contact area between the beams and the support frames, disperse the load transmitted by the beams, and avoid assembly loosening caused by local stress concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a bottom view of the structure of this utility model;

[0019] Figure 3 This is a partial schematic diagram of the structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the assembly of the side frame, connecting plate and support frame of this utility model.

[0021] In the diagram: 1. Column; 2. Beam; 3. Support flange; 4. Side frame; 5. Connecting plate; 6. Support frame; 7. First bolt; 8. Nut; 9. Insert block; 10. Second bolt; 11. First reinforcing rib; 12. Second reinforcing rib; 13. Third reinforcing rib; 14. Mounting base. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4A reconstituted bamboo beam-column joint connection structure includes a column 1, a beam 2, a load-bearing component, and an assembly component. The load-bearing component includes a support flange 3, a side frame 4, a connecting plate 5, a support frame 6, a first bolt 7, and a nut 8. The column 1 is provided with a support flange 3. The side frame 4 is arranged in two sets in a U-shape and symmetrically. The two free ends of the side frame 4 are symmetrically provided with connecting plates 5 on the front and rear sides. The first bolt 7 passes through the corresponding two sets of connecting plates 5 and is connected to the nut 8. The crossbeam of the side frame 4 is also provided with a support frame 6. The beam 2 is connected to the support frame 6 through the assembly component.

[0024] Two sets of "C-shaped side frames 4" (preferably made of Q235B carbon steel with a wall thickness of ≥5mm to ensure rigidity) are symmetrically enclosed from the left and right sides of the column 1, so that the inner wall of the side frame 4 is tightly attached to the reconstituted bamboo surface of the column 1. The "C" shape of the side frame 4 can wrap around three sides of the column 1, forming a preliminary radial constraint and restricting the left and right and front and back movement of the column 1.

[0025] After aligning the connecting plates 5 (integrated with the side frame 4, thickness ≥ 6 mm) at the two free ends of the side frame 4, the first bolt 7 (8.8 grade high-strength bolt, diameter 12-16 mm) is passed through the two sets of connecting plates 5 and tightened with nuts 8 (torque 25-30 N·m). After the bolts are tightened, the two sets of side frames 4 form a "ring-like rigid fixation" to the column 1, avoiding the loosening caused by the force displacement of the column 1 in the traditional "single-point bolt connection". At the same time, the overlapping area of ​​the connecting plates 5 (≥ 50 mm × 50 mm) can distribute the bolt force and prevent the connecting plates 5 from deforming.

[0026] The pre-set support flange 3 on the column 1 (integrated with the column 1, made of reconstituted bamboo, with a thickness of ≥20mm) is completely fitted to the bottom of the side frame 4 and can bear the vertical load transmitted by the side frame 4.

[0027] In this embodiment, the assembly component includes a plug 9 and a second bolt 10. The beam 2 is provided with a plug 9 connected to the support frame 6. The plug 9 is also provided with a second bolt 10 connected to the column 1 and the side frame 4. The plug 9 at the end of the beam 2 (prefabricated as an integral part of the beam 2, made of reconstituted bamboo, with a length ≥100mm and a cross-sectional size adapted to the support frame 6) is aligned with the support frame 6 (made of metal or FRP, with a smooth inner wall and no burrs) on the crossbeam of the side frame 4 and slowly inserted until the bottom of the plug 9 fits against the inner wall of the support frame 6—the insertion gap is ≤0.2mm, forming a mechanical constraint of "convex and concave fit".

[0028] After inserting the insert 9, the second bolt 10 (diameter 10-14mm, 8.8 grade high strength bolt) passes through the insert 9 and is threaded to the side frame 4 and the column 1 respectively (bolt path: insert 9 → support frame 6 → side frame 4 / column 1), and the bolt is tightened (torque 20-25N·m) to form a double anchor point fixation of "insert 9-side frame 4" and "insert 9-column 1";

[0029] The side frame 4 is provided with a first reinforcing rib 11 connected to the support frame 6. The support frame 6 transfers the load to the side frame 4 through the first reinforcing rib 11. The first reinforcing rib 11 can convert the bending moment of the support frame 6 into tensile and compressive forces on the side frame 4, thereby improving the torsional stiffness of the support frame 6 and preventing deformation of the support frame 6.

[0030] The insert 9 is provided with a second reinforcing rib 12 that is connected to the beam 2. The bending moment and shear force (such as beam end shear force caused by vertical load and bending moment caused by horizontal load) borne by the beam 2 are first transferred to the end insert 9. The connection surface between the insert 9 and the beam 2 is strengthened by "adhesive bonding + second reinforcing rib 12" (the second reinforcing rib 12 is arranged longitudinally and parallel to the axis of the beam 2), which can prevent the end of the beam 2 from cracking due to load concentration and evenly transfer the load to the support frame 6.

[0031] The column 1 is also provided with a third reinforcing rib 13 connected to the supporting flange 3. The vertical load transmitted by the side frame 4 is borne by the supporting flange 3 and distributed to the bottom of the column 1 through the third reinforcing rib 13, and finally transmitted to the mounting base 14 (the metal mounting base 14 below the column 1 is fixed to the foundation by expansion bolts), ensuring that the entire node is free from local overload.

[0032] In this embodiment, a mounting base 14 is also provided below the column 1, and mounting holes are provided at the four corners of the mounting base 14 to facilitate providing stable support for the column 1.

[0033] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0034] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A reconstituted bamboo beam-column joint connection structure, comprising a column (1), a beam (2), a load-bearing component, and an assembly component, characterized in that, The load-bearing component includes a support flange (3), a side frame (4), a connecting plate (5), a support frame (6), a first bolt (7), and a nut (8). The column (1) is provided with a support flange (3). The side frame (4) is arranged in two sets in a U-shape. The two free ends of the side frame (4) are symmetrically provided with connecting plates (5) on the front and rear sides. The first bolt (7) passes through the corresponding two sets of connecting plates (5) and is connected to the nut (8). The crossbeam of the side frame (4) is also provided with a support frame (6). The beam (2) is connected to the support frame (6) through an assembly component.

2. The reconstituted bamboo beam-column joint connection structure according to claim 1, characterized in that, The assembly component includes a plug (9) and a second bolt (10). The beam (2) is provided with a plug (9) connected to the support frame (6). The plug (9) is also provided with a second bolt (10) connected to the column (1) and the side frame (4).

3. The reconstituted bamboo beam-column joint connection structure according to claim 2, characterized in that, The side frame (4) is provided with a first reinforcing rib (11) that is connected to the support frame (6).

4. The reconstituted bamboo beam-column joint connection structure according to claim 3, characterized in that, The insert (9) is provided with a second reinforcing rib (12) that is connected to the beam (2).

5. The reconstituted bamboo beam-column joint connection structure according to claim 4, characterized in that, The column (1) is also provided with a third reinforcing rib (13) that is connected to the supporting flange (3).

6. The reconstituted bamboo beam-column joint connection structure according to claim 5, characterized in that, A mounting base (14) is also provided below the column (1), and mounting holes are provided at the four corners of the mounting base (14).

Images