Steel-bamboo combined hollow energy-consuming beam-column joint connecting structure

Abstract

The utility model discloses a steel-bamboo combined hollow energy dissipation beam column joint connecting structure, which relates to a joint connecting structure and comprises a steel-bamboo combined beam and a steel-bamboo combined column. The steel-bamboo combined column comprises a recombined bamboo inner column and a steel sleeve column arranged outside the recombined bamboo inner column in a wrapping mode. The steel-bamboo composite beam comprises a recombined bamboo inner beam and a steel sleeve beam wrapping the recombined bamboo inner beam, the recombined column beam comprises two recombined bamboo blocks which are oppositely arranged, friction energy dissipation composite rubber is fixed between the two recombined bamboo blocks, a T-shaped steel plate is inserted into the end, close to the steel-bamboo composite beam, of the steel-bamboo composite beam, a web of the T-shaped steel plate is fixed to the steel-bamboo composite beam, and the steel sleeve beam is fixed to the steel-bamboo composite beam. The upper flange of the T-shaped steel plate is fixed with the steel-bamboo combined column, and the upper flange of the T-shaped steel plate is wrapped in the steel sleeve beam. According to the novel energy-dissipation light steel-recombined bamboo connecting node structure, the overall strength of a node area can be improved, meanwhile, the friction energy dissipation and shock absorption effects are achieved, and finally the novel energy-dissipation light steel-recombined bamboo connecting node structure which is high in anti-seismic performance and good in overall performance is formed.

Description

Technical Field

[0001] The utility model relates to a node connection structure of a steel-bamboo combination system in a construction project, in particular to a steel-bamboo combination hollow energy-absorbing beam-column node connection structure. Background Art

[0002] Reconstructed bamboo is made from raw bamboo through a variety of processes, including splitting, bamboo strip thinning, low-temperature drying, grain-aligned assembly, and hot (cold) pressing and gluing. It is a green, high-strength bamboo-based composite material characterized by high strength, excellent toughness, strong weather resistance, excellent flame retardancy, and low carbon environmental protection, meeting the various performance requirements of modern structural building materials. Steel-bamboo composite components, through rational construction and connection methods, form load-bearing components composed of bamboo and flat steel. The combination of steel as the connecting component not only demonstrates the excellent connection properties of steel, but also avoids the disadvantage of bamboo's susceptibility to cracking along the grain direction, complementing the advantages and disadvantages of the two.

[0003] Developing a complete steel-bamboo composite system requires research on its components, but even more importantly, it requires addressing the issues of integrity and beam-column joint connections. Because research on this new system is relatively new in my country and experience is limited, a reliable set of composite joint connections has yet to be established.

[0004] Chinese patent application number 201320112104.2 discloses a "beam-column node connection for a reconstructed bamboo frame structure." Specifically, epoxy resin is pre-coated on metal connectors, and the end notches of the reconstructed bamboo frame beams are inserted into the metal connectors on the sides of the reconstructed bamboo frame columns. The node plates and metal connectors are bolted to the sides of the reconstructed bamboo frame columns, thereby connecting the reconstructed bamboo frame columns and beams into a single unit. This beam-column node connection is safe and reliable, effectively transmitting force, and is relatively simple to construct and install, making it practical. However, the node connection is located close to the column end at the beam end and lacks vertical support. This localized node connection exhibits weak bending resistance and is prone to vertical bending failure under strong loads, causing the structure to immediately lose its integrity and load-bearing capacity. This poses a threat to the overall reliability of the structure and to post-disaster rescue and reconstruction efforts.

[0005] Chinese patent application number 201320023304.0 discloses a "node structure for steel-bamboo composite beams and steel-bamboo composite columns." Specifically, a steel tube is fixedly installed at a section of the steel-bamboo composite box column and connected to the steel-bamboo composite I-beam via bolts. The steel-bamboo composite box column, the steel tube, and the upper and lower flanges of the steel-bamboo composite I-beam are then fixedly connected via angle steel. Compared to the technology disclosed in the previous patent application, this node structure adds angle steel connections at the nodes, which has a better connection effect, can achieve higher bearing capacity and stiffness with less material consumption, and is fast to construct and highly industrialized. However, this node structure does not consider energy dissipation and shock absorption, resulting in weak seismic performance and no obvious advantages for its application and promotion in earthquake-resistant areas.

[0006] It can be seen that the current light steel-reconstructed bamboo joint system, which relies solely on gluing or bolting beam-column joints, has little or no effect on frictional energy dissipation and vibration reduction, resulting in weak overall seismic resistance. Furthermore, many joint structures fail to consider the vertical bending deformation of beam-column joints, and therefore fail to implement corresponding auxiliary measures such as adding right-angle steel supports. These problems can lead to overall joint failure when bearing loads, and are not conducive to the promotion of reconstructed bamboo systems in seismic-resistant areas. Utility Model Content

[0007] The purpose of the utility model is to provide a steel-bamboo combined hollow energy-absorbing beam-column node connection structure, which adopts rubber material to connect block materials and reserves a hollow energy-absorbing area at the beam-column connection to fill T-shaped steel to generate a small displacement, thereby improving the overall strength of the node domain while achieving the effect of friction energy dissipation and shock absorption, and finally forming a new energy-absorbing light steel-recombined bamboo connection node structure with strong seismic performance and good overall structural performance, establishing a functional and effective node connection form, which is of great significance to the development of the steel-bamboo combination system and its promotion and application in seismic fortification areas.

[0008] In order to achieve the purpose of the utility model, the technical solution adopted is: a steel-bamboo composite hollow energy-absorbing beam-column node connection structure, including a steel-bamboo composite beam and a steel-bamboo composite column; the steel-bamboo composite column includes a reconstructed bamboo inner column and a steel sleeve column wrapped around the reconstructed bamboo inner column; the steel-bamboo composite beam includes a reconstructed bamboo inner beam and a steel sleeve beam wrapped around the reconstructed bamboo inner beam, the reconstructed column beam includes two relatively arranged reconstructed bamboo blocks, and a friction energy-absorbing composite rubber is fixed between the two reconstructed bamboo blocks. A T-shaped steel plate is inserted into one end of the steel-bamboo composite beam close to the steel-bamboo composite beam, the web of the T-shaped steel plate is fixed to the steel-bamboo composite beam, the upper flange of the T-shaped steel plate is fixed to the steel-bamboo composite column, and the upper flange of the T-shaped steel plate is wrapped in the steel sleeve beam.

[0009] Furthermore, the length of the friction energy dissipation composite rubber is shorter than that of the reconstructed bamboo block, the two reconstructed bamboo blocks and the friction energy dissipation composite rubber together form a groove, and the web of the T-shaped steel plate is installed in the groove.

[0010] Furthermore, the depth of the groove is equal to the length of the web of the T-shaped steel plate.

[0011] Furthermore, the width of the groove is smaller than the width of the web of the T-shaped steel plate.

[0012] Furthermore, the two reconstructed bamboo blocks are fixed to the web of the T-shaped steel plate and the steel sleeve beam by high-strength bolts.

[0013] Furthermore, the friction energy dissipation composite rubber is fixed between the two reconstructed bamboo blocks by bonding.

[0014] Furthermore, the reconstructed bamboo inner beams and the steel sleeve beams, and the reconstructed bamboo inner columns and the steel sleeve columns are fixed by bonding.

[0015] Furthermore, right-angled angle steels are fixedly installed at the right angles between the steel-bamboo composite beam and the steel-bamboo composite column.

[0016] Furthermore, the right-angle steel also has a triangular steel sheet.

[0017] Furthermore, both sides of the right-angle steel are fixed to the steel-bamboo composite beam and the steel-bamboo composite column respectively using high-strength bolts.

[0018] The beneficial effects of the utility model are:

[0019] (1) The structure has good energy dissipation and shock absorption performance and can be used in earthquake-resistant areas. Compared with ordinary rigid node connections, the utility model adopts a semi-rigid connection method that reserves a hollow energy dissipation area and uses friction energy dissipation composite rubber combined with high-strength bolts. In the event of a strong earthquake, it can offset most of the energy and effects of the earthquake through friction and compression between the T-shaped steel plate and the end of the steel-bamboo composite beam. At the same time, the elastic properties of the friction energy dissipation composite rubber itself can also dissipate energy. In addition, under the action of an earthquake, the high-strength bolts can also dissipate part of the energy by sliding relative to the bolt holes on the T-shaped steel plate.

[0020] (2) The structure has good integrity and reasonable force transmission. Steel-bamboo composite beams, steel-bamboo composite columns and T-shaped steel plates are easy to manufacture and can be precisely assembled. High-strength bolts are used for high-quality splicing to form a beam-column combination with excellent integrity. By connecting the steel-bamboo composite beams and steel-bamboo composite columns with right-angle steel, a constraint is provided to the steel-bamboo composite beams and steel-bamboo composite columns from the outside, making the connection closer while providing a portion of redundant vertical bending stiffness, further improving the stability of the beam-column node and avoiding the sudden collapse of the entire structure after the node is damaged or sheared. By using right-angle steel for connection, the two waist plates increase the force transmission area at the lower end of the node, effectively avoiding the problem of excessive stress concentration at the lower part of the beam-column node, so that the node can better transmit shear force and bending moment; at the same time, compared with ordinary angle steel, the right-angle steel is also welded with triangular steel sheets, which increases the vertical bending capacity of the right-angle steel and makes the right-angle steel have strong anti-deformation performance.

[0021] (3) The materials used in the structure are green and efficient, in line with the current concept of architectural development. Most of the materials used in the steel-bamboo composite beams and steel-bamboo composite columns are made of reconstituted bamboo, and only a small number of external parts and T-shaped steel plates and right-angle steels are made of steel, which greatly reduces the use of steel and has good economic and environmental benefits. In terms of stress, the reconstituted bamboo blocks in the steel-bamboo composite beams can give full play to the material properties to provide energy dissipation capacity for the nodes. On this basis, the T-shaped steel plates and right-angle steels make up for the shortcomings of the bamboo's bearing capacity and provide more guaranteed beam end shear resistance and overall bending stiffness. The excellent performance of the material is brought into play at the nodes to meet the various performance requirements of modern structures for building materials.

[0022] (4) Simple construction process and easy assembly. Steel-bamboo composite beams, steel-bamboo composite columns, and steel connectors are all prefabricated in the factory and then transported to the construction site for assembly. The assembly process relies solely on high-strength bolts to avoid wet work. The assembly is simple and convenient, and does not require high standards from construction workers, which can effectively improve construction efficiency and shorten construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification.

[0024] Figure 1 This is a structural diagram of the steel-bamboo combined hollow energy-absorbing beam-column node connection structure provided by the utility model;

[0025] Figure 2 This is an exploded schematic diagram of the steel-bamboo combined hollow energy-absorbing beam-column node connection structure provided by the utility model;

[0026] Figure 3 It is a structural diagram of a T-shaped steel plate;

[0027] Figure 4 This is a side view of a steel-bamboo composite beam;

[0028] Figure 5 It is a structural diagram of the steel-bamboo composite beam.

[0029] Markings and corresponding parts names in the accompanying drawings:

[0030] 1. Hollow energy dissipation area; 2. Adhesive; 3. Steel-bamboo composite beam; 4. Right-angle steel; 5. T-shaped steel plate; 6. Steel-bamboo composite column; 7. High-strength bolts; 8. Triangular steel sheet;

[0031] 31. Restructured bamboo inner beam; 32. Steel sleeve beam; 33. Friction energy dissipation composite rubber;

[0032] 311. Reorganize bamboo blocks;

[0033] 61. Reorganized bamboo columns; 62. Steel sleeve columns. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present invention. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5As shown, the present invention provides a steel-bamboo composite hollow energy-absorbing beam-column node connection structure, comprising a steel-bamboo composite beam 3 and a steel-bamboo composite column 6. The steel-bamboo composite beam 3 extends horizontally, while the steel-bamboo composite column 6 extends vertically. The steel-bamboo composite column 6 comprises a reassembled bamboo inner column 61, which has a rectangular cross-section and is encased in a steel sleeve column 62, with both ends of the steel sleeve column 62 flush with the ends of the reassembled bamboo inner column 61. The reconstructed column beam includes two reconstructed bamboo blocks 311 arranged opposite each other. The two reconstructed bamboo blocks 311 have the same size and are spaced a certain distance apart. A friction-energy-absorbing composite rubber 33 is disposed within the space between the two reconstructed bamboo blocks 311 and is fixed to the two reconstructed bamboo blocks 311. Furthermore, the friction-energy-absorbing composite rubber 33 is designed so that its edge does not extend beyond the surface of the reconstructed bamboo blocks 311. That is, the two reconstructed bamboo blocks 311 and the friction-energy-absorbing composite rubber 33 together form a reconstructed bamboo inner beam 31. The reconstructed bamboo inner beam 31 is further surrounded by a steel sleeve beam 32. The end of the steel sleeve beam 32, which is adjacent to the steel-bamboo composite column 6, slightly extends beyond the reconstructed bamboo inner beam 31.

[0037] like Figure 2 、 Figure 3 As shown, the steel-bamboo composite hollow energy-absorbing beam-column node connection structure provided by the present invention also includes a T-shaped steel plate 5. The web of the T-shaped steel plate 5 is inserted into and fixed to the end of the steel-bamboo composite beam 3 near the reconstructed bamboo inner column 61, and the upper flange of the T-shaped steel plate 5 is fixed to the reconstructed bamboo inner column 61. In order to facilitate the installation of the T-shaped steel plate 5, the edge of the upper flange of the T-shaped steel plate 5 does not extend beyond the four sides of the reconstructed bamboo inner beam 31. After the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 are connected by the T-shaped steel plate 5, the upper flange of the T-shaped steel plate 5 is respectively in contact with the end face of the reconstructed bamboo inner beam 31 and the surface of the steel-bamboo composite column 6, thereby avoiding the presence of a gap at the connection node between the steel-bamboo composite beam 3 and the steel-bamboo composite column 6.

[0038] When the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 are connected by the T-shaped steel plate 5, in order to facilitate the wrapping of the T-shaped steel plate 5, the end of the steel sleeve beam 32 close to the steel-bamboo composite column 6 slightly protrudes from the reconstructed bamboo inner beam 31, so that the end of the steel-bamboo composite beam 3 close to the steel-bamboo composite column 6 has a hollow area. This hollow area and the area for the web of the T-shaped steel plate 5 to be inserted together constitute our hollow energy dissipation area 1. When encountering a strong earthquake, it can not only absorb energy through the weak secondary force existing between the molecules of the friction energy dissipation composite rubber 33, further exerting the energy dissipation characteristics of the reconstructed bamboo, but also generate friction energy dissipation through the slight movement of the T-shaped steel in the energy dissipation area, thus having good shock absorption and buffering performance.

[0039] In order to facilitate the insertion of the web of the T-shaped steel plate 5 into the reconstructed bamboo inner beam 31 for installation, the length of the friction energy dissipation composite rubber 33 is shorter than the length of the reconstructed bamboo block 311, and when the friction energy dissipation composite rubber 33 is installed, the end of the friction energy dissipation composite rubber 33 away from the steel-bamboo composite column 6 is flush with the end face of the reconstructed bamboo block 311 away from the steel-bamboo composite column 6, and the end of the friction energy dissipation composite rubber 33 close to the steel-bamboo composite column 6 is shorter than the end face of the reconstructed bamboo block 311 close to the steel-bamboo composite column 6. After the two reconstructed bamboo blocks 311 and the friction energy dissipation composite rubber 33 are installed together, a groove is formed at the end of the reconstructed bamboo inner beam 31 close to the steel-bamboo composite column 6. When the T-shaped steel plate 5 is installed, the web of the T-shaped steel plate 5 is installed in the groove.

[0040] The depth of the groove is equal to the length of the web of the T-shaped steel plate 5, so that after the web of the T-shaped steel plate 5 is inserted into the groove, the web of the T-shaped steel plate 5 contacts the friction energy dissipation composite rubber 33, thereby forming an ideal limit device. When the structure is shaken and the steel plate hits the elastic material to cause deformation, the material can also recover quickly, reducing the possibility of large deformation.

[0041] Before the web of the T-shaped steel plate 5 is inserted into the groove, an epoxy resin material needs to be coated on the T-shaped steel plate 5 so that after the web of the T-shaped steel plate 5 is inserted into the groove, the web of the T-shaped steel plate 5 can be bonded and fixed to the end surface of the friction energy dissipation composite rubber 33 and the side surfaces of the two reconstructed bamboo blocks 311 via the adhesive 2. When the steel-bamboo composite beam 3 is connected to the steel-bamboo composite column 6, the upper flange of the T-shaped steel plate 5 can be bonded and fixed to the end surfaces of the two reconstructed bamboo blocks 311 and the steel sleeve column 62 in the steel-bamboo composite column 6 via the adhesive 2.

[0042] To facilitate the installation of the steel sleeve beam 32 onto the reconstructed bamboo inner beam 31, the dimensions of the T-shaped steel plate 5 are preferably designed so that the web width of the T-shaped steel plate 5 is equal to the width of the groove. The upper flange of the T-shaped steel plate 5 is smaller than the internal dimensions of the steel sleeve beam 32. This ensures that, after installation, there is a certain distance between the perimeter of the T-shaped steel plate 5 and the inner wall of the steel sleeve beam 32. This allows the inner wall of the steel sleeve beam 32 to conform to the outer wall of the reconstructed bamboo inner beam 31 when the steel sleeve beam 32 is installed, thus enhancing the integrity of the steel-bamboo composite beam 3. Furthermore, the web thickness of the T-shaped steel plate 5 can be slightly greater than the width of the groove to ensure a tight connection between the T-shaped steel plate 5 and the two reconstructed bamboo blocks 311, preventing loosening and other problems. The upper flange thickness of the T-shaped steel plate 5 can be slightly greater than the length of the steel sleeve beam 32 extending beyond the reconstructed bamboo inner beam 31, allowing the T-shaped steel plate 5 to move slightly and dissipate frictional energy after installation.

[0043] To ensure the integrity of the steel-bamboo composite beam 3, corresponding bolt holes are provided on the two reassembled bamboo blocks 311, the web of the T-shaped steel plate 5, and the steel sleeve beam 32. Once the two reassembled bamboo blocks 311, the friction energy dissipation composite rubber 33, the T-shaped steel plate 5, and the steel sleeve beam 32 are assembled, high-strength bolts 7 can be passed through the corresponding bolt holes in the two reassembled bamboo blocks 311, the T-shaped steel plate 5, and the steel sleeve beam 32, and then tightened with nuts, thereby completing the formation of the steel-bamboo composite beam 3. To ensure the connection between the steel-bamboo composite beam 3 and the steel-bamboo composite column 6, corresponding bolt holes are provided on the upper flange of the T-shaped steel plate 5 and the reassembled bamboo inner column 61 and steel sleeve column 62 of the steel-bamboo composite column 6. When the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 need to be connected, high-strength bolts 7 can be passed through the corresponding bolt holes in the upper flange of the T-shaped steel plate 5, the reassembled bamboo inner column 61, and the steel sleeve column 62, and then tightened with nuts to secure them.

[0044] In order to ensure the connection between the friction energy dissipation composite rubber 33 and the two reconstructed bamboo blocks 311, the adhesive 2 can be directly applied to the friction energy dissipation composite rubber 33 and the two reconstructed bamboo blocks 311 so that the friction energy dissipation composite rubber 33 and the two reconstructed bamboo blocks 311 can be fixed together by bonding.

[0045] Similarly, in order to ensure the connection between the reconstructed bamboo inner beam 31 and the steel sleeve beam 32, and between the reconstructed bamboo inner column 61 and the steel sleeve column 62, adhesive 2 can be applied to the outer wall of the reconstructed bamboo inner beam 31, the inner wall of the steel sleeve beam 32, the outer wall of the reconstructed bamboo inner column 61, and the inner wall of the steel sleeve column 62, so that the reconstructed bamboo inner beam 31 and the steel sleeve beam 32, and between the reconstructed bamboo inner column 61 and the steel sleeve column 62 can be fixed by bonding.

[0046] like Figure 1 、 Figure 2 As shown, in order to further strengthen the connection between the steel-bamboo composite beam 3 and the steel-bamboo composite column 6, a right-angle steel angle 4 is fixedly installed at the right angle between the steel-bamboo composite beam 3 and the steel-bamboo composite column 6. Since two right angles are formed between the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 after being connected by the T-shaped steel plate 5, the installation position and number of the right-angle steel angle 4 can be selected according to actual needs in the present invention. For example, the right-angle steel angle 4 can be installed in the right angle located above the steel-bamboo composite beam 3, or the right-angle steel angle 4 can be installed in the right angle located below the steel-bamboo composite beam 3, and the right-angle steel angle 4 can be installed simultaneously in the two right angles formed by the steel-bamboo composite beam 3 and the steel-bamboo composite column 6.

[0047] The right-angle steel 4 also has a triangular steel sheet 8, two sides of which are welded to the two ends of the right-angle steel 4 respectively, so that the triangular steel sheet 8 plays the role of a reinforcing rib in the right-angle steel 4, thereby increasing the vertical bending resistance of the right-angle steel 4 and making the right-angle steel 4 have strong deformation resistance.

[0048] In order to ensure the connection between the right-angle angle steel 4 and the steel-bamboo composite beam 3 and the steel-bamboo composite column 6, bolt holes are commonly opened on the two reorganized bamboo blocks 311, the steel sleeve beam 32 and the right-angle angle steel 4 in the steel-bamboo composite beam 3, and bolt holes are also commonly opened on the reorganized bamboo inner column 61, the steel sleeve column 62 and the right-angle angle steel 4 in the steel-bamboo composite column 6. High-strength bolts 7 are used to pass through the corresponding bolt holes on the two reorganized bamboo blocks 311, the steel sleeve beam 32 and the right-angle angle steel 4, and then tightened and fixed with nuts. High-strength bolts 7 are used to pass through the corresponding bolt holes on the reorganized bamboo inner column 61, the steel sleeve column 62 and the right-angle angle steel 4, and then tightened and fixed with nuts.

[0049] In the selection of the size of the right-angle steel 4, the width of one end of the right-angle steel 4 is equal to the width of the steel-bamboo composite beam 3, and the width of the other end of the right-angle steel 4 is equal to the width of the steel-bamboo composite column 6. This can not only make it evenly bear the vertical force transmitted from the steel-bamboo composite beam 3, but also effectively connect the steel-bamboo composite beam 3 and the steel-bamboo composite column 6, so that the connection node of the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 can be better combined into a whole, becoming an excellent constraint structure; the most important thing is that when the beam-column structure is subjected to huge load and fractures or other damage, the support can still maintain a certain integrity, which is in line with the construction principle of not being damaged by small earthquakes, being repairable by medium earthquakes, and not collapsing by large earthquakes.

[0050] In the present invention, in order to ensure the stability of the beam-column node connection structure, there are four high-strength bolts 7 used to connect the right-angle steel 4 and the steel-bamboo composite beam 3, the right-angle steel 4 and the steel-bamboo composite column 6, and the T-shaped steel plate 5 and the steel-bamboo composite column 6, and the four high-strength bolts 7 are arranged in an array, that is, the four high-strength bolts 7 are arranged in a rectangular shape.

[0051] In the present invention, the high-strength bolts 7 that fix the reconstructed bamboo block 311, the web of the T-shaped steel plate 5, and the steel sleeve beam 32 together can be selected so that their diameter is larger than the diameter of the high-strength bolts 7 used to connect the right-angle steel 4 and the steel-bamboo composite beam 3, the right-angle steel 4 and the steel-bamboo composite column 6, and the upper flange of the T-shaped steel plate 5 and the steel-bamboo composite column 6.

[0052] In the present invention, the adhesive 2 used for bonding can be directly selected from epoxy resin.

[0053] During the actual construction process of this utility model, the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 must first be processed in the factory according to the specified dimensions. Processing of the steel-bamboo composite column 6: Apply adhesive 2 to the reconstructed bamboo inner column 61, and set the steel sleeve column 62 on the reconstructed bamboo inner column 61. Then, two rows of bolt holes corresponding to the bolt holes on the right-angle steel 4 and the bolt holes on the upper flange of the T-shaped steel plate 5 are opened on the two reconstructed bamboo inner columns 61 and the steel sleeve column 62, with four bolt holes in each row. Processing of the steel-bamboo composite beam 3: As shown in the figure, Figure 4 、 Figure 5As shown, two reconstructed bamboo blocks 311 are bonded to a friction-energy-dissipating composite rubber 33 to form a reconstructed bamboo inner beam 31. During bonding, a groove is formed at one end of the reconstructed bamboo inner beam 31. Adhesive 2 is applied to the reconstructed bamboo inner beam 31. A steel sleeve beam 32 is sleeved onto the reconstructed bamboo inner beam 31. During assembly, the steel sleeve beam 32 and the reconstructed bamboo inner beam 31 must ensure that the grooved end of the reconstructed bamboo inner beam 31 has a hollow area in front of it to accommodate the web of the T-shaped steel plate 5. The groove and the hollow area together form a hollow energy-dissipating zone 1. Finally, bolt holes corresponding to the bolt holes on the web of the T-shaped steel plate 5 are provided in the two reconstructed bamboo blocks 311 and the steel sleeve beam 32. Bolt holes corresponding to the bolt holes on the right-angle steel 4 are also provided in the two reconstructed bamboo blocks 311 and the steel sleeve beam 32. Processing of the right-angle steel 4: The triangular steel sheet 8 is supported within the right-angle steel 4 using spot welding.

[0054] During the connection construction, the bolt holes on the upper flange of the T-shaped steel plate 5 are first closely aligned with the bolt holes on the steel-bamboo composite column 6. Then, the two are connected and fixed using high-strength bolts 7. The bolt holes of the lower right-angle steel 4 are then aligned with the bolt holes on the steel-bamboo composite column 6. After ensuring that the end of the right-angle steel 4 used to support the steel-bamboo composite beam 3 and the web of the T-shaped steel are spatially perpendicular, the right-angle steel 4 and the steel-bamboo composite column 6 are fixed using high-strength bolts 7. The pre-installed right-angle steel 4 here can support the steel-bamboo composite beam 3 below the unbolted steel-bamboo composite beam 3, thereby serving as a temporary fixation and facilitating construction.

[0055] Furthermore, the reconstructed bamboo inner column 61 with the T-shaped steel plate 5 and the right-angle steel 4 installed is gradually moved closer to the steel-bamboo composite beam 3, so that the web of the T-shaped steel plate 5 is inserted into the reserved hollow energy dissipation area 1, and the bolt holes on the steel-bamboo composite beam 3 are precisely aligned and tightly fitted with the bolt holes on the right-angle steel 4 and the bolt holes on the web of the T-shaped steel plate 5.

[0056] Furthermore, high-strength bolts 7 are first used to pass through the corresponding bolt holes on the steel-bamboo composite beam 3 and the right-angle steel 4 to fix the vertical position, ensuring that the steel-bamboo composite beam 3 and the steel-bamboo composite column 6 will not rotate, and always maintain a close fit with the right-angle steel 4 to provide additional vertical stiffness.

[0057] Finally, a high-strength bolt 7 perpendicular to the web of the T-shaped steel plate 5 is used to connect the steel-bamboo composite beam 3 and the T-shaped steel plate 5 into a whole.

[0058] During the processing of the steel-bamboo composite beam 3 in the present invention, it should be noted that the width of the groove of the recombinant bamboo inner beam 31 close to the end of the steel-bamboo composite column 6 should be slightly smaller than the web size of the T-shaped steel, so as to maintain a close connection between the components and avoid the influence of the end seam and the circumferential seam on the hysteretic energy dissipation capacity of the node; and the internal size of the steel sleeve beam 32 should be slightly larger than the upper flange size of the T-shaped steel plate 5, so that after the T-shaped steel plate 5 is installed, there is a certain distance between the four sides of the T-shaped steel plate 5 and the inner wall of the steel sleeve beam 32, so that friction energy dissipation can be generated between the components to achieve the purpose of shock absorption.

[0059] It should be noted that, in the present invention, the width of the groove is the distance between two reconstructed bamboo blocks 311 .

[0060] In the present invention, in order to further improve the energy dissipation capacity of the node, the friction energy dissipation composite rubber 33 can be applied to the outside of the T-shaped steel plate 5. Of course, the adhesive 2 still needs to be applied to the outside of the T-shaped steel plate 5 when it is installed.

[0061] In view of the problems of existing steel-bamboo composite beam three-column connection nodes under strong loads, such as damage to the node core area and bond slip failure, and failure to consider energy dissipation and shock absorption, the utility model combines the analysis of the performance characteristics of reconstructed bamboo and steel materials to propose a steel-bamboo composite beam three-column node connection structure in which a T-shaped steel plate 5 is filled in a reserved hollow energy dissipation area 1 and a lower support is added. All components and connectors in the node connection structure can be prefabricated in a factory and then transported to the site for installation.

[0062] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0064] Those skilled in the art will appreciate that the above embodiments are merely for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention. Other variations or modifications may be made based on the above disclosure, and such variations or modifications are still within the scope of the present invention.

Claims

1. A steel-bamboo composite hollow energy-absorbing beam-column node connection structure, characterized in that: The invention comprises a steel-bamboo composite beam (3) and a steel-bamboo composite column (6); the steel-bamboo composite column (6) comprises a reorganized bamboo inner column (61) and a steel sleeve column (62) wrapped around the reorganized bamboo inner column (61); the steel-bamboo composite beam (3) comprises a reorganized bamboo inner beam (31) and a steel sleeve beam (32) wrapped around the reorganized bamboo inner beam (31); the reorganized column beam comprises two reorganized bamboo blocks (311) arranged opposite to each other; a friction energy dissipation composite rubber (33) is fixed between the two reorganized bamboo blocks (311); a T-shaped steel plate (5) is inserted into one end of the steel-bamboo composite beam (3) close to the steel-bamboo composite beam (3); the web of the T-shaped steel plate (5) is fixed to the steel-bamboo composite beam (3); the upper flange of the T-shaped steel plate (5) is fixed to the steel-bamboo composite column (6), and the upper flange of the T-shaped steel plate (5) is wrapped inside the steel sleeve beam (32).

2. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 1 is characterized in that: The length of the friction energy dissipation composite rubber (33) is smaller than that of the reorganized bamboo block (311); the two reorganized bamboo blocks (311) and the friction energy dissipation composite rubber (33) together form a groove; the web of the T-shaped steel plate (5) is installed in the groove.

3. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 2 is characterized in that: The depth of the groove is equal to the length of the web of the T-shaped steel plate (5).

4. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 2 is characterized in that: The width of the groove is smaller than the width of the web of the T-shaped steel plate (5).

5. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 1 is characterized in that: The two recombined bamboo blocks (311) are fixed together with the web of the T-shaped steel plate (5) and the steel sleeve beam (32) via high-strength bolts (7).

6. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 1 is characterized in that: The friction energy dissipation composite rubber (33) is fixed between two reconstructed bamboo blocks (311) by bonding.

7. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 1 is characterized in that: The reorganized bamboo inner beam (31) and the steel sleeve beam (32), and the reorganized bamboo inner column (61) and the steel sleeve column (62) are fixed by bonding.

8. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 1 is characterized in that: A right-angle steel (4) is fixedly installed at the right angle between the steel-bamboo composite beam (3) and the steel-bamboo composite column (6).

9. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 8, characterized in that: The right-angle steel (4) also has a triangular steel sheet (8) inside.

10. The steel-bamboo composite hollow energy-absorbing beam-column node connection structure according to claim 8, characterized in that: Both sides of the right-angle steel (4) are fixed to the steel-bamboo composite beam (3) and the steel-bamboo composite column (6) respectively using high-strength bolts (7).

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