A torsion excitation-based high-energy-consumption timber structure node rotation self-resetting device

Abstract

The application provides a high-energy-consumption wood structure node rotation self-resetting device based on torsion excitation, which comprises a wood component, an energy consumption component and a self-resetting component, the energy consumption component comprises a first steel plate and an energy consumption connecting piece which can be installed on the first steel plate, the self-reseting component comprises a second steel plate, a third steel plate and a special-shaped shaft, the energy consumption connecting piece is located between the first steel plate and the second steel plate, and the end portions of the second steel plate and the third steel plate are provided with special-shaped grooves which are matched with the special-shaped shaft and allow the special-shaped shaft to pass through; the second steel plate and the third steel plate in the application can rotate with the rotation of the wood structure node, so that the special-shaped grooves drive the special-shaped shaft to rotate, the convex part on the cross section of the special-shaped shaft is in contact with the two steel plates and is twisted in the special-shaped grooves, so that the super-elastic behavior of the shape memory alloy is excited and the node is self-resetting.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, and in particular to a high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation. Background Technology

[0002] my country is vigorously promoting the development of modern multi-story timber structures. Engineered timber, such as glued laminated timber and cross-laminated timber, has been recognized and promoted in engineering projects due to its flexibility in design and processing, convenience in factory prefabrication and on-site installation, and diverse structural and component forms. However, in engineered timber structures, the joints at beam-column connections and beam-shear wall connections are similar to hinges, with low rotational stiffness. Therefore, under large loads or earthquakes, they are prone to significant rotational deformation, which can have a certain impact on buildings using timber structures.

[0003] Engineered timber structures often use bolted connections for joints, resulting in relatively low rotational stiffness. For example, in a glued laminated timber frame-orthogonal glued laminated timber shear wall structure, due to the difference in lateral stiffness between the frame and shear wall structures, the glued laminated timber beams at the connection with the orthogonal glued laminated timber shear wall will undergo in-plane rotation in the horizontal plane. Large rotation can lead to significant deformation or even failure of structural components such as floor slabs. Similarly, when beam-column joints in engineered timber structures rotate in the plane, the bolts rotate around the joint center. The timber at the bolt hole wall bears pressure, causing adjacent timber to experience transverse tensile stress, often resulting in transverse splitting of the timber in the joint area, leading to joint failure. Therefore, joint design is a crucial aspect of structural design. Seismic design requires strong joints and weak structural members. The design of engineered timber structure joints should ensure sufficient strength and deformation capacity to prevent deformation or failure beyond the intended use. Thus, it is necessary to develop self-resetting, high-energy-consuming, replaceable devices to improve the deformation capacity of joints and optimize the stress performance of engineered timber structures. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a high-energy-consuming wood structure node rotation self-resetting device based on torsional excitation, which solves the problem that nodes at wood structure connections and other locations have low rotational stiffness and poor deformation capacity in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0006] A high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation includes an energy-consuming component and a self-resetting component installed on the wooden component. The energy-consuming component includes a first steel plate and an energy-consuming connector that can be installed on the first steel plate. The self-resetting component includes a second steel plate, a third steel plate, and a shaped shaft. The energy-consuming connector is located between the first steel plate and the second steel plate. The ends of the second steel plate and the third steel plate are connected by a shaped groove that matches the shape of the shaped shaft and allows the shaped shaft to pass through. The shaped shaft is a shape memory alloy shaped bolt shaft, and the cross-sectional shape of the shaped shaft is a circle with at least two outward protrusions.

[0007] In one embodiment of the present invention, both the energy-consuming component and the self-resetting component are replaceable, and the energy-consuming component and the self-resetting component are applicable to two wooden components in a wooden structure that rotate in the horizontal plane. The wooden components include, but are not limited to, two mutually perpendicular wooden beams, mutually perpendicular wooden beams and wooden walls.

[0008] In one embodiment of the present invention, the type of the energy-consuming connector includes, but is not limited to, energy-consuming friction plates, U-shaped and annular energy-consuming steel plates. The energy-consuming connector and the first steel plate can be connected by adhesive bonding, and the energy-consuming connector and the second steel plate can be connected by adhesive bonding or by a third bolt. This technical solution enables the energy-consuming connector to be installed on the second steel plate by threading the third bolt through the energy-consuming connector to the second steel plate, thereby facilitating the installation and disassembly of the energy-consuming connector.

[0009] In one embodiment of the present invention, the connection between the first steel plate and the third steel plate and the wooden component can be achieved by bolts at the end of the wooden component or by wrapping the end of the wooden component with a steel plate pre-welded with bolts. The first steel plate is connected to the wooden component and the second steel plate by a first bolt, and the third steel plate is connected to the wooden component by a second bolt. This technical solution facilitates the installation and removal of the first and second steel plates by threading the first steel plate through the second steel plate and connecting it to the wooden component with the first steel plate, and by installing the first and second steel plates on the wooden component under the action of a first fixing nut and a second fixing nut. Similarly, the second steel plate is threaded through the third steel plate and connected to the wooden component, and by installing the third steel plate on the wooden component under the action of a third fixing nut, further facilitating the installation and removal of the third steel plate.

[0010] In one embodiment of the present invention, a plurality of pre-cut slots are provided on the second steel plate, and the first bolt passes through the pre-cut slots on the second steel plate and can slide within the pre-cut slots.

[0011] In one embodiment of the present invention, the second steel plate is provided with two first connecting members integrally formed with the third steel plate at the end near the third steel plate, and the third steel plate is provided with two second connecting members integrally formed with the third steel plate at the end near the second steel plate. The two first connecting members and the second connecting members can be assembled to form a connecting column, and the irregular groove is disposed inside the connecting column.

[0012] As described above, the high-energy-dissipating wood structure node rotation self-resetting device based on torsional excitation of the present invention has the following beneficial effects: The second and third steel plates in the present invention will rotate with the rotation of the wood structure node, thereby causing the irregular groove to drive the irregular shaft to rotate. The outwardly protruding part on the cross section of the irregular shaft contacts the two steel plates in the irregular groove and undergoes torsion, thereby stimulating the hyperelastic behavior of the shape memory alloy and causing the node to self-reset. At the same time, the second and third steel plates will slide relative to each other and achieve energy dissipation under the action of the energy-dissipating connector. Therefore, the present invention can achieve self-resetting and high energy dissipation after the wood structure has undergone large rotational deformation under the action of large earthquake or ultra-large load, thereby preventing the wood structure building from undergoing deformation or damage beyond its use function, and thus improving the disadvantage of the generally small rotational stiffness of wood structure nodes. It will be particularly effective in improving the rotational stiffness of the node in the horizontal plane. Attached Figure Description

[0013] Figure 1 The diagram shows the overall structure of the high-energy-consuming wooden structure node rotation self-resetting device based on torsion excitation disclosed in the embodiment of the present invention.

[0014] Figure 2 The diagram shows the connection between the energy-consuming component and the self-resetting component in the high-energy-consuming wood structure node rotation self-resetting device based on torsional excitation disclosed in an embodiment of the present invention.

[0015] Figure 3 The diagram shows the overall structure of the high-energy-consuming wooden structure node rotation self-resetting device based on torsion excitation, which is installed on two wooden beams, as disclosed in an embodiment of the present invention.

[0016] Figure 4 The diagram shows the overall structure of the high-energy-consuming wooden structure node rotation self-resetting device based on torsion excitation disclosed in this embodiment of the invention, installed on a wooden beam and a wooden wall.

[0017] Component designation explanation

[0018] 1. Wooden components; 101. Wooden beam; 102. Wooden wall; 2. Energy-dissipating components; 201. First steel plate; 202. Energy-dissipating connector; 3. Self-resetting components; 301. Second steel plate; 302. Third steel plate; 303. Irregular shaft; 304. Connecting column; 305. Irregular groove; 306. First connector; 307. Second connector; 4. Pre-grooved; 5. First bolt; 6. Second bolt; 7. Third bolt; 8. First fixing nut; 9. Second fixing nut; 10. Third fixing nut. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0020] Please see Figure 1 and Figure 2 This invention provides a high-energy-consuming timber structure node rotation self-resetting device based on torsional excitation, comprising an energy-consuming component 2 and a self-resetting component 3 installed on a timber component 1. Both the energy-consuming component 2 and the self-resetting component 3 are replaceable. The energy-consuming component 2 and the self-resetting component 3 are preferably applicable to two timber components 1 in a timber structure that undergo horizontal rotation. The timber component 1 includes, but is not limited to, two mutually perpendicular timber beams 101, mutually perpendicular timber beams 101, and a timber wall 102. The energy-consuming component 2 includes a first steel plate 201 and an energy-consuming connector 202 that can be installed on the first steel plate 201. The types of 02 include, but are not limited to, energy-consuming friction plates, U-shaped and annular energy-consuming steel plates. The energy-consuming connector 202 and the first steel plate 201 can be bonded together. The self-resetting assembly 3 includes a second steel plate 301, a third steel plate 302 and a shaped shaft 303. The energy-consuming connector 202 is located between the first steel plate 201 and the second steel plate 301. The energy-consuming connector 202 and the second steel plate 301 can be bonded together or connected by a third bolt 7. When the energy-consuming connector 202 is a U-shaped or annular energy-consuming steel plate, the second steel plate 301 and the energy-consuming connector 202 are preferably connected by bolts.

[0021] By threading the third bolt 7 through the energy-dissipating connector 202 to the second steel plate 301, the energy-dissipating connector 202 can be installed on the second steel plate 301, thus facilitating the installation and removal of the energy-dissipating connector 202. The connection between the first steel plate 201 and the third steel plate 302 and the wooden component 1 can be achieved using bolts at the end of the wooden component 1 or by wrapping the end of the wooden component 1 with a steel plate pre-welded with bolts. The first steel plate 201 is connected to the wooden component 1 and the second steel plate 301 by a first bolt 5. The surface of the first bolt 5 is fitted with a first fixing nut 8 and a second fixing nut 9. By threading the first bolt 7 through the second steel plate 301 and the first... The steel plate 201 is threadedly connected to the wooden component 1, and under the action of the first fixing nut 8 and the second fixing nut 9, the first steel plate 201 and the second steel plate 301 can be installed on the wooden component 1, thereby facilitating the installation and disassembly of the first steel plate 201 and the second steel plate 301. The third steel plate 302 is connected to the wooden component 1 by the second bolt 6. The surface of the second bolt 6 is fitted with the third fixing nut 10. The second bolt 6 passes through the third steel plate 302 and is threadedly connected to the wooden component 1. Under the action of the third fixing nut 10, the third steel plate 302 can be installed on the wooden component 1, thereby facilitating the installation and disassembly of the third steel plate 302.

[0022] exist Figure 2 In the middle section, the second steel plate 301 has several pre-cut slots 4. The first bolt 5 passes through the pre-cut slots 4 on the second steel plate 301 and can slide within the pre-cut slots 4. The pre-cut slots 4 are elongated holes, allowing the first bolt 5 to slide along the slots as it rotates. At the junction of the ends of the second steel plate 301 and the third steel plate 302, there are irregularly shaped grooves 305 that match the shape of the irregularly shaped shaft 303 and allow the irregularly shaped shaft 303 to pass through. The irregularly shaped shaft 303 is a shape memory alloy irregularly shaped bolt shaft, and the cross-sectional shape of the irregularly shaped shaft 303 is as follows: The circular part has at least two protruding parts, such as gear shape. The end of the second steel plate 301 near the third steel plate 302 is provided with two first connecting parts 306 integrally formed with the second steel plate 301. The end of the third steel plate 302 near the second steel plate 301 is provided with two second connecting parts 307 integrally formed with the third steel plate 302. The two first connecting parts 306 and the second connecting parts 307 can be assembled to form a connecting column 304. The irregular groove 305 is provided inside the connecting column 304 along the length of the connecting column 304.

[0023] Specifically, when the wooden structure node rotates, the second steel plate 301 and the third steel plate 302 rotate along with the wooden structure node, which causes the irregular groove 305 to drive the irregular shaft 303 to rotate. The outwardly protruding part on the cross section of the irregular shaft 303 contacts the two steel plates in the irregular groove 305 and undergoes torsion, thereby stimulating the hyperelastic behavior of the shape memory alloy and causing the node to self-reset. At the same time, the second steel plate 301 and the third steel plate 302 will slide relative to each other and achieve energy dissipation under the action of the energy dissipation connector 202. Therefore, this self-resetting device can significantly improve the energy dissipation and deformation self-resetting ability of the wooden structure node.

[0024] For practical applications, please refer to Figure 3 The self-resetting device is arranged between two mutually perpendicular wooden beams 101. The self-resetting device includes an energy-dissipating component 2 and a self-resetting component 3 mounted on the two wooden beams 101. Both the energy-dissipating component 2 and the self-resetting component 3 are fixed to the wooden beams 101 using bolts at beam-column joints. The energy-dissipating component 2 is fixed to one of the wooden beams 101 at the joint. The energy-dissipating component 2 includes a first steel plate 201 attached to the surface of the wooden beam 101 and an energy-dissipating connector 202. The energy-dissipating connector 202 is an energy-dissipating friction plate made of high-damping rubber, which is fixed to the first steel plate 201 by adhesive bonding. The self-resetting component 3 is fixed to the other wooden beam 101 at the joint. The self-resetting component 3 consists of a pair of rotatable steel plates, namely a second steel plate 301 and a third steel plate 302. The second steel plate 301 is tightly fitted with the energy-dissipating friction plate. When the node rotates, the energy-dissipating component 2 and the self-resetting component 3 will slide relative to each other to dissipate energy. The second steel plate 301 and the third steel plate 302 have irregular grooves 305 at their ends. A shape memory alloy irregular pin shaft is inserted into the irregular groove 305. The cross-sectional shape of the shape memory alloy irregular pin shaft is a circle with four outward protrusions, like a gear. When the wooden structure node rotates, the second steel plate 301 and the third steel plate 302 rotate with the wooden structure node, which will cause the irregular groove 305 to drive the irregular shaft 303 to rotate. The outward protrusions on the cross-section of the irregular shaft 303 contact the two steel plates in the irregular groove 305 and twist, thereby stimulating the hyperelastic behavior of the shape memory alloy and causing the node to self-reset.

[0025] For another practical application, please refer to Figure 4The self-resetting device is arranged between mutually perpendicular wooden beams 101 and wooden walls 102. The device includes an energy-dissipating component 2 and a self-resetting component 3, respectively installed on the wooden beams 101 and wooden walls 102. The energy-dissipating component 2 is fixed to the wooden beams 101 by bolts at the joints. The wooden walls 102 are covered with steel plates pre-welded with bolts. The self-resetting component 3 is fixed to the steel plates by bolts. The energy-dissipating component 2 is fixed to the wooden beams 101 and includes a first steel plate 201 that conforms to the surface of the wooden beams 101 and an energy-dissipating connector 202. The energy-dissipating connector 202 consists of two U-shaped energy-dissipating steel plates. The self-resetting component 3 is fixed to the wooden walls 102 and consists of a pair of rotatable steel plates, namely a second steel plate 301 and a third steel plate 302. The second steel plate 301 and the energy-dissipating connector 202 are connected to the wooden beams 101 by bolts. The connecting component 202 is fixed with bolts. When the wooden structure node rotates, the energy dissipation component 2 and the self-resetting component 3 will slide relative to each other to dissipate energy. The second steel plate 301 and the third steel plate 302 have irregular grooves 305 at their ends. A shape memory alloy irregular pin shaft is inserted into the irregular groove 305. The cross-sectional shape of the shape memory alloy irregular pin shaft is a circle with three outward protrusions, like a gear. When the wooden structure node rotates, the second steel plate 301 and the third steel plate 302 rotate with the wooden structure node, which will cause the irregular groove 305 to drive the irregular shaft 303 to rotate. The outward protrusions on the cross-section of the irregular shaft 303 contact the two steel plates in the irregular groove 305 and twist, thereby stimulating the hyperelastic behavior of the shape memory alloy and making the node self-reset.

[0026] In this invention, the second steel plate 301 and the third steel plate 302 rotate with the rotation of the wooden structure node, which causes the irregular groove 305 to drive the irregular shaft 303 to rotate. The outwardly protruding part on the cross section of the irregular shaft 303 contacts the two steel plates in the irregular groove 305 and undergoes torsion, thereby stimulating the hyperelastic behavior of the shape memory alloy and causing the node to self-reset. At the same time, the second steel plate 301 and the third steel plate 302 will slide relative to each other and achieve energy dissipation under the action of the energy dissipation connector 202. Therefore, this invention can achieve self-reset and high energy dissipation after the wooden structure undergoes large rotational deformation under the action of large earthquake or ultra-large load, thereby preventing the wooden structure building from undergoing deformation or damage beyond its use function, and thus improving the disadvantage of the generally low rotational stiffness of wooden structure nodes. It will be particularly effective in improving the rotational stiffness of the node in the horizontal plane.

[0027] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation, characterized in that: Includes an energy-dissipating component (2) and a self-resetting component (3) installed on the wooden component (1), both of which are replaceable, and are applicable to two wooden components (1) in a wooden structure that rotate in the horizontal plane; The energy-dissipating component (2) includes a first steel plate (201) and an energy-dissipating connector (202) that can be installed on the first steel plate (201). The self-resetting component (3) includes a second steel plate (301), a third steel plate (302), and a shaped shaft (303). The energy-dissipating connector (202) is located between the first steel plate (201) and the second steel plate (301). The connection between the first steel plate (201) and the third steel plate (302) and the wooden component (1) is... The connection can be made using bolts at the end of the wooden component (1) or by wrapping the end of the wooden component (1) with a steel plate pre-welded with bolts. At the junction of the ends of the second steel plate (301) and the third steel plate (302), there is a shaped groove (305) that matches the shape of the shaped shaft (303) and allows the shaped shaft (303) to pass through. The shaped shaft (303) is a shape memory alloy shaped bolt shaft, and the cross-sectional shape of the shaped shaft (303) is a circle with at least two outward protrusions.

2. The high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation according to claim 1, characterized in that: The wooden components (1) include, but are not limited to, two mutually perpendicular wooden beams (101), mutually perpendicular wooden beams (101), and wooden walls (102).

3. The high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation according to claim 1, characterized in that: The types of the energy-consuming connector (202) include, but are not limited to, energy-consuming friction plates, U-shaped and annular energy-consuming steel plates. The energy-consuming connector (202) and the first steel plate (201) can be bonded together. The energy-consuming connector (202) and the second steel plate (301) can be bonded together or connected by a third bolt (7).

4. The high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation according to claim 1, characterized in that: The first steel plate (201) is connected to the wooden component (1) and the second steel plate (301) by a first bolt (5), and the third steel plate (302) is connected to the wooden component (1) by a second bolt (6).

5. A high-energy-consuming timber structure node rotation self-resetting device based on torsional excitation according to claim 4, characterized in that: The second steel plate (301) has a plurality of pre-cut slots (4), and the first bolt (5) passes through the pre-cut slots (4) on the second steel plate (301) and can slide within the pre-cut slots (4).

6. The high-energy-consuming wooden structure node rotation self-resetting device based on torsional excitation according to claim 1, characterized in that: The second steel plate (301) has two first connectors (306) integrally formed with the second steel plate (301) at the end near the third steel plate (302), and the third steel plate (302) has two second connectors (307) integrally formed with the third steel plate (302) at the end near the second steel plate (301). The two first connectors (306) and the second connectors (307) can be assembled to form a connecting column (304), and the irregular groove (305) is disposed inside the connecting column (304).

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