Inorganic glue composite bamboo-concrete giant frame structure system with multiple anti-seismic defense lines

Abstract

The invention belongs to the technical field of building structures, and relates to an inorganic glue composite bamboo-concrete giant frame structure system with multiple anti-seismic defense lines, which comprises a concrete giant frame and an inorganic glue composite bamboo frame. The concrete giant frame comprises a giant column formed by a plurality of wall columns and a giant beam with an additional energy consumption web. The giant beam is composed of an upper beam, a lower beam and an energy dissipation web. One-way annular dampers are installed between the energy dissipation web plates. And a bidirectional annular damper is arranged at the joint of the inorganic glue composite bamboo beam and the reinforced concrete giant column. The annular damper is connected through bolts and is convenient to replace after an earthquake. The inorganic glue composite bamboo frame structure serves as a substructure and mainly bears self weight and vertical load. The horizontal load is mainly borne by the giant frame. Under the action of a horizontal earthquake, the damper firstly yields to dissipate energy, and then yields to dissipate energy at the beam end and the column end in sequence to form three anti-seismic defense lines.

Description

Technical Field

[0001] This invention relates to the field of bamboo and wood, specifically to an inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple earthquake-resistant defenses. Background Technology

[0002] With increasing emphasis on green, low-carbon, and sustainable building materials, bamboo structures, represented by engineered composite bamboo, are being increasingly used in building structures due to their excellent environmental friendliness, renewability, and high specific strength. However, bamboo structures face the following challenges in practical engineering applications: (1) The connection between components in bamboo structures cannot be fully rigid, resulting in low lateral stiffness and large deformation. The application height of pure composite bamboo structures is usually limited to low-rise buildings; it is difficult to meet the application needs of multi-story and high-rise buildings.

[0003] (2) The traditional connection method is bolt connection. The bamboo is prone to splitting and brittle failure under horizontal load, which is not easy to repair. In order to prevent splitting, steel plates or fiber composite materials (FRP) are often used to partially wrap the joint. Although the load-bearing capacity of the joint is improved to a certain extent and the splitting of bamboo is delayed, the splitting problem is not fundamentally solved. Summary of the Invention

[0004] To address the problems existing in existing bamboo structures, this invention proposes an inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention proposes a multi-layered earthquake-resistant inorganic adhesive composite bamboo-concrete mega-frame structure system, comprising a concrete mega-frame and an inorganic adhesive composite bamboo frame. The concrete mega-frame includes mega-columns and mega-beams, with adjacent mega-columns connected by mega-beams. Each mega-beam includes an upper beam, a lower beam, and an energy-dissipating web, with the energy-dissipating web installed between the upper and lower beams. The inorganic adhesive composite bamboo frame is located inside the concrete mega-frame, and an inorganic adhesive composite bamboo frame is also installed within the space formed by adjacent mega-beams, connecting to the upper beam and the mega-columns.

[0006] In the aforementioned inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines, the concrete mega-frame serves as the main lateral force resisting component, improving the overall stiffness of the structure. This structural system can be applied to multi-story and high-rise structures. The inorganic adhesive composite bamboo frame structure, as a substructure, mainly bears its own weight and vertical loads, preventing bamboo from splitting and breaking.

[0007] As a further technical solution, the inorganic adhesive composite bamboo frame includes composite bamboo beams and composite bamboo columns connected together, wherein a bidirectional annular steel plate damper is arranged at the connection between the composite bamboo beams and the reinforced concrete mega-column.

[0008] As a further technical solution, the bidirectional annular steel plate damper is composed of a first connecting member, a second connecting member, a first connecting end plate, a second connecting end plate, a first annular steel plate, and a second annular steel plate; the first annular steel plate and the second annular steel plate are arranged perpendicular to each other, the first annular steel plate is vertically arranged, the second annular steel plate is horizontally arranged, and the second annular steel plate is fitted into the middle of the outer ring of the first annular steel plate; the first connecting member is bolted to the intersection of the left side walls of the first annular steel plate and the second annular steel plate; the second connecting member is bolted to the intersection of the right side walls of the first annular steel plate and the second annular steel plate; and the other end of the first connecting member and the second connecting member is welded to the first connecting end plate and the second connecting end plate, respectively.

[0009] As a further technical solution, multiple energy-dissipating webs are installed between the upper and lower beams at intervals.

[0010] As a further technical solution, each energy-dissipating web is provided with multiple slots along the height direction, and a one-way annular steel plate damper is installed in each slot.

[0011] As a further technical solution, multiple unidirectional annular steel plate dampers are installed along the height direction of the gap.

[0012] As a further technical solution, the energy-dissipating web includes a web body and a unidirectional annular steel plate damper. A gap is provided on the web body, and the unidirectional annular steel plate damper is provided in the gap.

[0013] As a further technical solution, the unidirectional annular steel plate damper includes a first connector, a second connector, a first connecting end plate, a second connecting end plate, and a first annular steel plate; the left and right sidewalls of the first annular steel plate are respectively bolted to one end of the first connector and the second connector, and the other end of the first connector and the second connector is respectively welded to the first connecting end plate and the second connecting end plate, and the first connecting end plate and the second connecting end plate are connected to the web body.

[0014] As a further technical solution, an inorganic adhesive composite bamboo frame is also installed below the lowest mega-beam, and the inorganic adhesive composite bamboo frame is connected to the foundation and the rectangular column.

[0015] As a further technical solution, the giant columns are located at the four corners of the concrete megaframe.

[0016] The beneficial effects of this invention are: 1) This invention proposes a multi-layered seismic-resistant inorganic adhesive composite bamboo-concrete mega-frame structure system. The concrete mega-frame serves as the primary lateral force resisting component, enhancing the overall structural stiffness. This system can be applied to multi-story and high-rise structures. The inorganic adhesive composite bamboo frame structure, as a substructure, primarily bears its own weight and vertical loads, preventing bamboo splitting. Horizontal loads are mainly borne by the mega-frame. Under horizontal seismic action, the dampers yield first, followed by the beam ends and column ends, forming multiple seismic-resistant lines and further preventing bamboo splitting. The mega-frame is a mega-beam with energy-dissipating webs. These webs reduce the peak bending moment in the mega-beam structure, resulting in a more uniform bending moment distribution. To ensure the force borne by the mega-beam is transferred to the mega-columns and avoids transmission to the bamboo frame, bamboo columns are not placed at the lower beams of the mega-beams. The inorganic adhesive composite bamboo frame is connected to the upper beams and mega-columns.

[0017] 2) At the connection between the giant concrete column and the composite bamboo beam, a two-way ring steel plate damper is installed to avoid the concrete crushing and bamboo splitting damage caused by the mismatch of the strength and elastic modulus of the two materials or the torsional action. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the inorganic adhesive composite bamboo-concrete mega-frame structure system of the present invention; Figure 2 This is a schematic diagram of the concrete mega-beam of the present invention; Figure 3 This is a schematic diagram of the connection between the composite bamboo beam and the concrete wall of the present invention; Figure 4 This is a schematic diagram of the bidirectional annular steel plate damper of the present invention; Figure 5 This is a schematic diagram of the unidirectional annular steel plate damper of the present invention; Figure 6 This is a schematic diagram of the connection between the inorganic adhesive composite bamboo column base and the foundation of this invention; Figure 7 This is a schematic diagram of the connection structure between the inorganic adhesive composite bamboo column and the concrete upper beam of the present invention; Figure 8 This invention relates to inorganic adhesive composite bamboo pillars and inorganic adhesive composite bamboo pillars; Figure 9 This is a schematic diagram of the inorganic adhesive composite bamboo beam-column joint connection of the present invention; In the diagram: 1. Mega-column; 2. Mega-beam; 3. Inorganic adhesive composite bamboo frame; 4. Upper beam; 5. Lower beam; 6. Energy-dissipating web; 7. Unidirectional annular steel plate damper; 81. First annular steel plate; 82. Second annular steel plate; 91. First connector; 92. Second connector; 101. First connecting end plate; 102. Second connecting end plate; 11. Inorganic adhesive composite bamboo beam; 12. Rebar; 13. Inorganic adhesive composite bamboo column; 14. Steel shoe; 15. Foundation; 16. Steel connector; 17. T-shaped filler plate; 18. Bidirectional annular steel plate damper. Detailed Implementation It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this invention proposes an inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines.

[0021] In a typical embodiment of the present invention, such as Figure 1 As shown, this embodiment provides a multi-layered earthquake-resistant inorganic adhesive composite bamboo-concrete mega-frame structure system, including a concrete mega-frame and an inorganic adhesive composite bamboo frame 3; the inorganic adhesive composite bamboo frame structure serves as a substructure, mainly bearing its own weight and vertical loads; the horizontal loads are mainly borne by the concrete mega-frame. Under horizontal seismic action, the dampers of the concrete megaframe yield and dissipate energy first, followed by the beam ends and column ends of the concrete megaframe yielding and dissipating energy in succession, forming three seismic defense lines. The composite bamboo frame only bears vertical loads, avoiding bamboo splitting damage.

[0022] Furthermore, in this embodiment, the concrete mega-frame includes mega-columns 1 formed by multiple wall segments and mega-beams 2 with additional energy-dissipating webs; the mega-columns 1 are arranged at the corners of the concrete mega-frame; adjacent mega-columns 1 are connected by mega-beams 2 with additional energy-dissipating webs; and preferably, a mega-beam 2 is arranged along the height direction of the mega-column 1 every 4-6 layers of wall segments between adjacent mega-columns 1; furthermore, in order to ensure that the force borne by the mega-beam 2 is transferred to the mega-column 1 and avoids being transferred to the bamboo frame, the lower beam 5 of the mega-beam is not arranged with bamboo columns of inorganic adhesive composite bamboo frame 3.

[0023] Furthermore, the aforementioned mega-beam 2 consists of an upper beam 4, a lower beam 5, and an energy-dissipating web 6. Installing the energy-dissipating web 6 between the upper beam 4 and the lower beam 5 can reduce the peak bending moment in the mega-beam structure, making the bending moment distribution more uniform. The inorganic adhesive composite bamboo frame 3 is located inside the concrete mega-beam; and an inorganic adhesive composite bamboo frame is also set within the space formed by adjacent mega-beams, and the inorganic adhesive composite bamboo frame is connected to the upper beam 4 and the mega-column. Furthermore, an inorganic adhesive composite bamboo frame is also installed below the lowest mega-beam 2. The inorganic adhesive composite bamboo frame is connected to the foundation and the rectangular column, but not to the lower beam 5 of the lowest mega-beam 2. This design is mainly to avoid the vertical load of the mega-frame beam being transferred to the inorganic adhesive composite bamboo column, which would cause the bamboo column to be subjected to excessive axial force and thus break at the bottom. In this way, the load borne by the transfer beam is mainly transferred to the mega-column.

[0024] Furthermore, in order to improve the energy dissipation capacity of the energy-dissipating web 6, gaps are made between the webs, and unidirectional annular steel plate dampers 7 are installed in the gaps, so that the energy-dissipating web 6 has good seismic stiffness; under wind-induced vibration and minor earthquakes, the dampers provide stiffness and control structural deformation; under moderate and major earthquakes, they yield and dissipate energy first, effectively reducing the seismic response of the main structure.

[0025] Furthermore, the width of the aforementioned gap is 100 mm - 200 mm.

[0026] Furthermore, multiple energy-dissipating webs 6 are installed at intervals between the upper beam 4 and the lower beam 5.

[0027] Furthermore, each energy-dissipating web 6 is provided with multiple slots along the height direction, and a unidirectional annular steel plate damper 7 is installed in each slot.

[0028] Furthermore, multiple unidirectional annular steel plate dampers 7 are provided along the height direction of the gap.

[0029] Furthermore, the energy-dissipating web 6 includes a web body and a unidirectional annular steel plate damper 7. A gap is provided on the web body, and a unidirectional annular steel plate damper 7 is provided in the gap. Under horizontal load, the web mainly undergoes vertical deformation, so the unidirectional annular steel plate damper 7 is arranged along this direction to make it yield and dissipate energy.

[0030] like Figure 5 As shown, this embodiment discloses a unidirectional annular steel plate damper 7, which is composed of a first connecting member 91, a second connecting member 92, a first connecting end plate 101, a second connecting end plate 102, and a first annular steel plate 81. The left and right sidewalls of the first annular steel plate 81 are respectively bolted to one end of the first connector 91 and the second connector 92, which facilitates replacement if damaged; and the other ends of the first connector 91 and the second connector 92 are respectively welded to the first connecting end plate 101 and the second connecting end plate 102; the first connecting end plate 101 and the second connecting end plate 102 are connected to the web body; the first connecting end plate 101 and the second connecting end plate 102 serve as embedded parts and are connected to the reinforced concrete web.

[0031] like Figure 4 As shown, this embodiment discloses a bidirectional annular steel plate damper 18, which is composed of a first connecting member 91, a second connecting member 92, a first connecting end plate 101, a second connecting end plate 102, a first annular steel plate 81, and a second annular steel plate 82. The first annular steel plate 81 and the second annular steel plate 82 are arranged perpendicularly to each other, with the first annular steel plate 81 being vertical and the second annular steel plate 82 being horizontal, and the second annular steel plate 82 being fitted into the middle of the outer ring of the first annular steel plate 81; the first connecting piece 91 is bolted to the intersection of the left side walls of the first annular steel plate 81 and the second annular steel plate 82; the second connecting piece 92 is bolted to the intersection of the right side walls of the first annular steel plate 81 and the second annular steel plate 82; and the other end of the first connecting piece 91 and the second connecting piece 92 is welded to the first connecting end plate 101 and the second connecting end plate 102, respectively; the first connecting end plate 101 and the second connecting end plate 102 are embedded parts and connected to the reinforced concrete web.

[0032] The two ends of the aforementioned damper are relatively displaced, and the first annular steel plate 81 and the second annular steel plate 82 undergo rolling bending deformation, allowing the yield point to move continuously, thus achieving multi-section yielding, effectively avoiding stress concentration at the yield point, ensuring stable hysteresis performance, and high energy dissipation capacity.

[0033] Furthermore, the inorganic adhesive composite bamboo frame 3 serves as a substructure, primarily bearing its own weight and vertical loads. The composite bamboo beams and columns are connected using steel filler plates and bolts. Grooves are cut into the composite bamboo beams, into which steel filler plates are inserted, and these plates are bolted to the beams. The reinforcing bars in the composite bamboo columns are assembled and connected to the composite bamboo beams using steel connectors.

[0034] Furthermore, such as Figure 3 As shown, a bidirectional annular steel plate damper 18 is arranged at the connection between the inorganic adhesive composite bamboo beam 11 and the reinforced concrete mega-column 1 (as shown). Figure 4 As shown), it bears the in-plane internal forces and out-of-plane torsion, avoiding damage to the concrete and bamboo at the connection. Specifically, at the joint between the bamboo beam and the concrete shear wall, on the one hand, the connection deforms under bending moment and shear force in the vertical direction, and on the other hand, the structure will torsion under seismic action, that is, out-of-plane deformation. Therefore, a ring damper is also arranged in the out-of-plane direction, and it is a bidirectional ring steel plate damper 18. The bidirectional ring steel plate damper 18 is connected to the concrete mega-column 1 through welded bolt embedded parts, and is connected to the composite bamboo beam through rebar 12.

[0035] like Figure 6 As shown, the connection method between the inorganic adhesive composite bamboo frame 3 and the base 15 is as follows: a steel shoe 14 is fixed on the base 15, and the steel shoe 14 is installed at the foot of the inorganic adhesive composite bamboo column 13, and the gap between the steel shoe 14 and the inorganic adhesive composite bamboo column is filled with glue. Furthermore, the inorganic adhesive composite bamboo columns 13 are connected to each other using a rebar anchoring method. To facilitate on-site installation, steel connectors are used to connect the upper and lower composite bamboo columns.

[0036] Furthermore, the composite bamboo column is connected to the upper beam 4 of the giant reinforced concrete beam via steel connectors 16 and reinforcing bars 12, as shown below. Figure 7 As shown, the bottom of the steel connector 16 is connected to the upper beam 4 via the anchor bar 12, and the top of the steel connector 16 is also connected to the inorganic adhesive composite bamboo column 13 via the anchor bar 12.

[0037] Furthermore, the connection between inorganic adhesive composite bamboo columns is as follows: Figure 8 As shown, the two are connected by steel connector 16 and rebar 12. Steel connector 16 is set between inorganic adhesive composite bamboo columns. One end of steel connector 16 is connected to one of inorganic adhesive composite bamboo columns 13 by rebar 12, and the other end of steel connector 16 is connected to another inorganic adhesive composite bamboo column 13 by rebar 12.

[0038] Furthermore, such as Figure 9The diagram shows the connection of the inorganic adhesive composite bamboo beam-column joint. The side of the inorganic adhesive composite bamboo column 13 is connected to the corresponding inorganic adhesive composite bamboo beam 11 through multiple T-shaped filler plates 17, and the T-shaped filler plates 17 arranged opposite each other are connected by rebar 12.

[0039] The specific construction methods for the inorganic adhesive composite bamboo-concrete mega-frame structure system with the above-mentioned multiple seismic defense lines are as follows: Step 1: Inorganic adhesive composite bamboo beams, column components, dampers, and steel connectors are manufactured in the factory. The inorganic adhesive composite bamboo beams are connected to the T-shaped filler plates in the factory, and the inorganic adhesive composite bamboo columns are reinforced with steel bars. Then they are transported to the construction site.

[0040] Step 2: The inorganic adhesive composite bamboo frame is assembled on-site. First, the inorganic adhesive composite bamboo column components are installed. The columns are connected to each other using connectors and bolts. Beams are also bolted to the columns. This part is fully prefabricated, improving construction efficiency.

[0041] Step 3: On-site reinforcement of the giant frame section is tied, bolts are pre-embedded at the connection with the inorganic adhesive composite bamboo components, annular steel plate dampers are installed between the webs, and formwork is erected and concrete is poured.

[0042] Repeat the steps above.

[0043] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-layered earthquake-resistant inorganic adhesive composite bamboo-concrete mega-frame structure system, characterized in that, Including mega-frames made of concrete and inorganic adhesive composite bamboo frames; The concrete mega-frame includes mega-columns and mega-beams, with adjacent mega-columns connected by mega-beams; the mega-beams include upper beams, lower beams, and energy-dissipating webs, with energy-dissipating webs installed between the upper and lower beams; the inorganic adhesive composite bamboo frame is located inside the concrete mega-frame; and an inorganic adhesive composite bamboo frame is also set in the space formed by adjacent mega-beams, with the inorganic adhesive composite bamboo frame connected to the upper beams and mega-columns.

2. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 1, characterized in that, The inorganic adhesive composite bamboo frame includes composite bamboo beams and composite bamboo columns connected together, wherein a bidirectional annular steel plate damper is arranged at the connection between the composite bamboo beams and the reinforced concrete mega-column.

3. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 2, characterized in that, The bidirectional annular steel plate damper includes a first connector, a second connector, a first connecting end plate, a second connecting end plate, a first annular steel plate, and a second annular steel plate. The first annular steel plate and the second annular steel plate are arranged perpendicular to each other, with the first annular steel plate being vertical and the second annular steel plate being horizontal. The second annular steel plate is fitted into the middle of the outer ring of the first annular steel plate. The first connector is bolted to the intersection of the left side walls of the first and second annular steel plates. The second connector is bolted to the intersection of the right side walls of the first and second annular steel plates. The other ends of the first connector and the second connector are welded to the first connecting end plate and the second connecting end plate, respectively.

4. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 1, characterized in that, Multiple energy-dissipating webs are installed between the upper and lower beams at intervals.

5. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 4, characterized in that, Each energy-dissipating web has multiple slots along its height, and each slot is equipped with a unidirectional annular steel plate damper.

6. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 5, characterized in that, Multiple unidirectional annular steel plate dampers are installed along the height direction of the gap.

7. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 1, characterized in that, The energy-dissipating web includes a web body and a unidirectional annular steel plate damper. A gap is provided on the web body, and the unidirectional annular steel plate damper is installed in the gap.

8. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 7, characterized in that, The unidirectional annular steel plate damper comprises a first connector, a second connector, a first connecting end plate, a second connecting end plate, and a first annular steel plate; the left and right sidewalls of the first annular steel plate are respectively bolted to one end of the first connector and the second connector, and the other ends of the first connector and the second connector are respectively welded to the first connecting end plate and the second connecting end plate, and the first connecting end plate and the second connecting end plate are connected to the web body.

9. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 1, characterized in that, An inorganic adhesive composite bamboo frame is also installed below the lowest layer of giant beams, which is connected to the foundation and rectangular columns.

10. The inorganic adhesive composite bamboo-concrete mega-frame structure system with multiple seismic defense lines as described in claim 1, characterized in that, The giant columns are located at the four corners of the concrete megaframe.

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