An energy dissipation device for reinforcing mortise and tenon joints of wooden structures

Abstract

This invention discloses an energy-dissipating device for reinforcing mortise and tenon joints in wooden structures. Applied to mortise and tenon joints composed of beams and columns, the device includes a first damper, a connecting plate, and two sets of rhomboid connectors. Columns have column sleeves, and beams have beam sleeves. One end of the column sleeve and one end of the beam sleeve are connected to form an auxiliary joint. One set of rhomboid connectors has one end connected to the other end of the column sleeve and the other end connected to the connecting plate. The other set of rhomboid connectors has one end connected to the other end of the beam sleeve and the other end connected to the connecting plate. One end of the first damper is connected to the connecting plate, and the other end is connected to the auxiliary joint. The two sets of rhomboid connectors are symmetrically arranged relative to the axis of the first damper. The device provides resistance to tenon dislodgement and pull-out from the mortise and tenon joints. While providing stiffness, load-bearing capacity, and deformation capacity, it also enhances energy dissipation and seismic resistance, and has the advantages of being lightweight and having easily replaceable components.

Description

Technical Field

[0001] The invention belongs to the technical field of reinforcing mortise and tenon joints of wooden structures, and in particular relates to an energy dissipation device for reinforcing mortise and tenon joints of wooden structures. Background Art

[0002] Wood structures have a long history in my country and have been widely used in temples, palaces, houses and other buildings. There are still new buildings in my country that use wood structures, and many of the existing ancient wooden structures in my country are precious heritage in my country's architectural art. As a building material, wood has the characteristics of easy access and simple construction. However, due to factors such as climate, war, earthquake damage, and microbial corrosion, ancient wooden structures often have varying degrees of damage, which affects the bearing capacity and normal use of the structure. How to reasonably and reliably repair and reinforce these buildings is of great significance for protection.

[0003] Mortise and tenon joint connection is a common beam-column joint connection form in wood structures. This type of joint connection is a semi-rigid connection, which reduces the overall stiffness of the structure, increases the structural ductility, and is beneficial to the earthquake resistance of the structure. Investigations and studies by many experts have shown that the destruction of wooden structures often begins at the connection nodes, and most of the component materials are basically intact. The existing ancient wooden structures in my country have a history of hundreds or even thousands of years, and their mortise and tenon joints are all aged and damaged to varying degrees and need to be reinforced.

[0004] Existing methods for reinforcing mortise and tenon joints in wooden structures can be divided into two types: lossy type (such as direct reinforcement with CFRP, nails, angle steel, flat steel, plug plates, and curved steel plates) and non-destructive type (such as reinforcement with curved steel plates fixed with round hoops and sleeves, and steel sleeve frames). The former may cause redistribution of internal forces in the original structure, leading to damage to other components, and the installation process will cause damage to the original components. At the same time, it is difficult to provide sufficient energy dissipation capacity for the structure when subjected to earthquakes or other external forces; while the latter is often larger in size, affecting the appearance of the building, and it is inconvenient to replace parts. Summary of the invention

[0005] The purpose of the present invention is to provide an energy dissipation device for reinforcing the mortise and tenon joints of wooden structures, so as to solve the problems of the existing mortise and tenon joint reinforcement devices proposed in the above background technology, such as causing redistribution of internal forces of the original structure leading to damage to other components, damaging the mortise and tenon components during the installation process, difficulty in providing energy dissipation capacity, large size, and inconvenient replacement.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An energy dissipation device for reinforcing the mortise and tenon joints of a wooden structure is applied to the mortise and tenon joints formed by a beam and a column, comprising a first damper, a connecting plate and two groups of rhombus-shaped connectors, wherein the column is provided with a column sleeve, the beam is provided with a beam sleeve, one end of the column sleeve and one end of the beam sleeve are connected to form an auxiliary node; one end of one group of the rhombus-shaped connectors is connected to the other end of the column sleeve, and the other end is connected to the connecting plate; one end of another group of the rhombus-shaped connectors is connected to the other end of the beam sleeve, and the other end is connected to the connecting plate; one end of the first damper is connected to the connecting plate, and the other end is connected to the auxiliary node, and the two groups of rhombus-shaped connectors are symmetrically arranged relative to the axis of the first damper.

[0008] A further technical solution is that the first damper is a self-resetting damper, the upper end of the self-resetting damper is connected to the auxiliary node by bolts, and the lower end of the self-resetting damper is connected to the connecting plate by bolts.

[0009] A further technical solution is that a first fork joint and a second fork joint with bolt holes are respectively provided at both ends of the first damper, the first fork joint is connected to the auxiliary node by bolts, and the second fork joint is connected to the connecting plate by bolts;

[0010] Or the first damper is provided with a first connecting ear plate and a second connecting ear plate with bolt holes at both ends, the first connecting ear plate is connected to the auxiliary node by bolts, and the second connecting ear plate is connected to the connecting plate by bolts;

[0011] Or the first damper is provided with a third fork joint with bolt holes and a third connecting ear plate with bolt holes at both ends respectively, the third fork joint is connected to the auxiliary node by bolts, and the third connecting ear plate is connected to the connecting plate by bolts.

[0012] A further technical solution is that the crossbeam sleeve comprises a first crossbeam sleeve hoop and a second crossbeam sleeve hoop, and the first crossbeam sleeve hoop and the second crossbeam sleeve hoop are both sleeved on the crossbeam; the column sleeve comprises a first column sleeve hoop and a second column sleeve hoop, and the first column sleeve hoop and the second column sleeve hoop are both sleeved on the column; the first crossbeam sleeve hoop and the first column sleeve hoop are connected to form an auxiliary node, the second column sleeve hoop is connected to one group of the diamond connectors, and the second crossbeam sleeve hoop is connected to another group of the diamond connectors.

[0013] A further technical solution is that the crossbeam sleeve is a crossbeam steel sleeve, and the column sleeve is a column steel sleeve. The crossbeam steel sleeve and the column steel sleeve are respectively sleeved on the crossbeam and the column, and one end of the crossbeam steel sleeve and one end of the column steel sleeve are connected to form an auxiliary node, wherein one end of one group of the diamond-shaped connectors is connected to the other end of the column steel sleeve, and the other end of another group of the diamond-shaped connectors is connected to the crossbeam sleeve.

[0014] A further technical solution is that the diamond-shaped connector includes 4 connecting steel bars and 1 short steel bar, the 4 connecting steel bars are connected end to end to form a diamond frame, and the two ends of the short steel bar are respectively connected to the two ends of the short diagonal of the diamond frame; the two ends of the long diagonal of one group of diamond frames are respectively connected to the other end of the column connector and the connecting plate, and the two ends of the long diagonal of the other group of diamond frames are respectively connected to the other end of the beam connector and the connecting plate.

[0015] A further technical solution is that the diamond-shaped connector includes four connecting steel bars and a second damper, the four connecting steel bars are connected end to end to form a diamond frame, and the two ends of the second damper are respectively connected to the two ends of the short diagonal of the diamond frame; the two ends of the long diagonal of one group of diamond frames are respectively connected to the other end of the column connector and the connecting plate, and the two ends of the long diagonal of the other group of diamond frames are respectively connected to the other end of the beam connector and the connecting plate.

[0016] A further technical solution is that a fourth fork joint with bolt holes and a fourth connecting ear plate with bolt holes are respectively provided at both ends of the connecting steel bar; the connecting steel bar is connected end to end through the fourth fork joint and the fourth connecting ear plate to form the diamond frame.

[0017] A further technical solution is that the shape of the connecting plate is an isosceles triangle, a semicircle or an inverted T-shape, the two groups of diamond-shaped connecting members are respectively connected to the two bases of the connecting plate, and the first damper is connected to the top of the connecting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Under the action of earthquake or external force, the mortise and tenon structure produces repeated lateral deformation, and the angle between the wooden beam and the wooden column also changes accordingly. In this case, the first damper in the energy dissipation device for reinforcing the mortise and tenon joints of the wooden structure of the present invention will be repeatedly stretched or compressed, consuming part of the energy, and providing the structure with certain seismic resistance and energy dissipation during earthquake or external force.

[0020] 2. The energy dissipation device for reinforcing the mortise and tenon joints of wooden structures of the present invention uses two groups of diamond-shaped connectors to support the first damper, which has a good supporting effect and high stability.

[0021] 3. The first damper in the energy dissipation device for reinforcing the mortise and tenon joints of wooden structures of the present invention adopts a self-resetting damper, which provides a certain self-resetting function for the mortise and tenon joints of wooden structures.

[0022] 4. The energy dissipation device for reinforcing the mortise and tenon joints of wooden structures of the present invention adopts a non-destructive reinforcement method, and uses a first damper, a connecting plate, two groups of diamond-shaped connectors and sockets (i.e., a beam socket and a column socket) to externally reinforce the mortise and tenon joints of wooden structures, which not only improves the stability of the mortise and tenon joints, but also avoids damage to the original structure.

[0023] 5. The energy dissipation device for reinforcing the mortise and tenon joints of wooden structures of the present invention has a simple structure, lightweight components, convenient installation and replacement of components, and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of Embodiment 1 of an energy dissipation device for reinforcing mortise and tenon joints of a wooden structure according to the present invention;

[0025] Figure 2 A schematic diagram of the connection of a diamond-shaped connector, a first damper and a connection plate of an energy dissipation device for reinforcing a mortise and tenon joint of a wooden structure according to the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the first damper of an energy dissipation device for reinforcing the mortise and tenon joint of a wooden structure according to the present invention;

[0027] Figure 4 A schematic diagram of the structure of connecting steel bars of an energy dissipation device for reinforcing mortise and tenon joints of a wood structure according to the present invention;

[0028] Figure 5 A schematic diagram of the short steel bar structure of an energy dissipation device for reinforcing mortise and tenon joints of a wood structure according to the present invention;

[0029] Figure 6 A schematic diagram of the structure of a connecting plate of an energy dissipation device for reinforcing a mortise and tenon joint of a wooden structure according to the present invention;

[0030] Figure 7 It is a structural schematic diagram of a half square hoop of an energy dissipation device for reinforcing a mortise and tenon joint of a wooden structure according to the present invention;

[0031] Figure 8 It is a structural schematic diagram of a semicircular hoop of an energy dissipation device for reinforcing a mortise and tenon joint of a wooden structure according to the present invention;

[0032] Fig. 9 It is a structural schematic diagram of Embodiment 2 of an energy dissipation device for reinforcing mortise and tenon joints of a wooden structure according to the present invention;

[0033] Fig.10 The present invention is a schematic diagram of the structure of a second damper of an energy dissipation device for reinforcing a mortise and tenon joint of a wooden structure.

[0034] Figure numbers: 1-crossbeam; 2-column; 3-first damper; 31-first fork joint; 32-second fork joint; 33-first connecting ear plate; 34-second connecting ear plate; 35-third fork joint; 36-third connecting ear plate; 4-connecting plate; 5-diamond connector; 51-connecting steel bar; 511-fourth fork joint; 512-fourth connecting ear plate; 52-short steel bar; 53-second damper; 6-first crossbeam sleeve hoop; 7-second crossbeam sleeve hoop; 8-first column sleeve hoop; 9-second column sleeve hoop; 10-crossbeam steel sleeve; 11-column steel sleeve; 12-auxiliary node; 13-diamond frame. DETAILED DESCRIPTION

[0035] In order to better understand the purpose, structure, features and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that the features shown in the drawings are not necessarily drawn to scale. In addition, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] Example 1

[0038] like Figure 1-8As shown, an energy dissipation device for reinforcing the mortise and tenon joints of wooden structures is applied to the mortise and tenon joints composed of beams and columns, including a first damper, a connecting plate and two groups of rhombus connectors. The column is provided with a column sleeve, and the beam is provided with a beam sleeve. One end of the column sleeve and one end of the beam sleeve are connected to form an auxiliary node; one end of one group of rhombus connectors is connected to the other end of the column sleeve, and the other end is connected to the connecting plate; one end of another group of rhombus connectors is connected to the other end of the beam sleeve, and the other end is connected to the connecting plate; one end of the first damper is connected to the connecting plate, and the other end is connected to the auxiliary node, and the two groups of rhombus connectors are symmetrically arranged relative to the axis of the first damper. The energy dissipation device for reinforcing the mortise and tenon joint of the present invention can improve the stiffness, bearing capacity and deformation capacity of the mortise and tenon joint, and can also provide a certain energy dissipation capacity for the mortise and tenon joint. Under the action of earthquake or other external forces, the structure will undergo lateral deformation, and the angle between the beam and the column will also change accordingly. In this case, the damper will be stretched or compressed, consuming part of the energy, providing energy dissipation for the structure when it is subjected to external force; when the beam and the column are relatively dislocated due to external force and there is a tendency for the mortise and tenon to come off, the component of the present invention will generate corresponding resistance to resist structural deformation and improve the mortise and tenon's ability to resist coming off.

[0039] This embodiment takes into account the stability of the compression rod, and the diamond connector has advantages in quality and stability compared to ordinary rods. Assuming that the cross-section of the steel bar rod is a solid circle, all components in the diamond connector have the same cross-section size, the diameter is d1, the maximum slenderness ratio of the components in the diamond connector is λ1, the total volume is V1, the cross-section diameter of a single rod is d2, the maximum slenderness ratio of the rod is λ2, the total volume is V2, the node spacing between the two structures is 500mm, and the smallest angle of the diamond structure is 60°:

[0040] (1) When the slenderness ratio of the rods is the same, the total mass of the diamond connector will be lower than that of a single rod.

[0041] When the slenderness ratio of steel bars is similar, there are:

[0042]

[0043] It can be seen that diamond-shaped connectors have a relatively obvious effect on saving steel and reducing the deadweight of the structure.

[0044] (2) When the total mass of steel bars is the same, the stability of diamond connectors is better than that of single bars.

[0045] When the volume of steel bars is similar, there are:

[0046]

[0047] It can be seen that when the structural mass is similar, the diamond connector has better stability and higher load-bearing capacity. Compared with a single steel bar, the diamond connector is more stable and has higher rigidity and stability; at the same time, this diamond connector structure can provide additional energy dissipation capacity for the mortise and tenon joint to a certain extent. The cross-section of the connecting steel bar can be any of the types of circular ring, square ring, circle or square, which can enhance the overall strength of the structure.

[0048] The first damper in this embodiment is a self-resetting damper, wherein:

[0049] A first fork joint and a second fork joint with bolt holes are respectively provided at both ends of the first damper, the first fork joint is connected to the auxiliary node by bolts, and the second fork joint is connected to the connecting plate by bolts;

[0050] Or the first damper is provided with a first connecting ear plate and a second connecting ear plate with bolt holes at both ends, the first connecting ear plate is connected to the auxiliary node by bolts, and the second connecting ear plate is connected to the connecting plate by bolts;

[0051] Or two ends of the first damper are respectively provided with a third fork joint with bolt holes and a third connecting ear plate with bolt holes, the third fork joint is connected to the auxiliary node through bolts, and the third connecting ear plate is connected to the connecting plate through bolts.

[0052] When the angle between the beam and the column changes due to external force, the self-resetting damper is stretched or compressed. The self-resetting damper provides a certain self-resetting function for the structure after being subjected to external force, thereby preventing the overall damage of the wooden structure.

[0053] In this embodiment, the crossbeam sleeve includes a first crossbeam sleeve hoop and a second crossbeam sleeve hoop, and the column sleeve includes a first column sleeve hoop and a second column sleeve hoop; the first crossbeam sleeve hoop and the second crossbeam sleeve hoop are both sleeved on the crossbeam, and the first column sleeve hoop and the second column sleeve hoop are both sleeved on the column. The first crossbeam sleeve hoop and the second crossbeam sleeve hoop are both composed of two semi-square hoops connected by bolts, and the first column sleeve hoop and the second column sleeve hoop are both composed of two semi-circular hoops connected by bolts. Depending on the actual situation, an additional crossbeam sleeve hoop can be added between the first crossbeam sleeve hoop and the second crossbeam sleeve hoop, and an additional column sleeve hoop can be added between the first column sleeve hoop and the second column sleeve hoop to achieve reinforcement. The first crossbeam sleeve hoop and the first column sleeve hoop are connected to form an auxiliary node; one end of a group of diamond-shaped connectors is connected to the second column sleeve hoop, and the other end is connected to the connecting plate; one end of another group of diamond-shaped connectors is connected to the second crossbeam sleeve hoop, and the other end is connected to the connecting plate, ensuring a stable connection between the sleeve hoop and the beam and column; the auxiliary node formed by the connection of the first crossbeam sleeve hoop and the first column sleeve hoop further provides strength to the structure and strengthens the mortise and tenon joint.

[0054] The two groups of diamond-shaped connecting members in this embodiment each include four connecting steel bars and one short steel bar. The first and second ends of the connecting steel bars are respectively provided with a fourth fork-shaped joint with a bolt hole and a fourth connecting ear plate with a bolt hole. The four connecting steel bars are connected end to end to form a diamond frame, and the two ends of the short steel bar are respectively connected to the two ends of the short diagonal line of the diamond frame; the two ends of the long diagonal line of one group of diamond frames are respectively connected to the second column sleeve hoop and the connecting plate, and the two ends of the long diagonal line of the other group of diamond frames are respectively connected to the second beam sleeve hoop and the connecting plate.

[0055] The connecting plate in this embodiment is in the shape of an isosceles triangle, an inverted T-shape or a semicircle, and its top and bottom are both provided with connecting ear plates with bolt holes, two groups of diamond-shaped connecting parts are respectively connected to the two bottom feet of the connecting plate, and the first damper is connected to the top of the connecting plate.

[0056] Example 2

[0057] Example 2 is basically the same as Example 1, except that: Fig. 9 The crossbeam sleeve is a crossbeam steel sleeve, the column sleeve is a column steel sleeve, the crossbeam steel sleeve and the column steel sleeve are connected to form a beam-column node, the column steel sleeve is connected to a set of diamond-shaped connectors, and the crossbeam steel sleeve is connected to another set of diamond-shaped connectors. The steel sleeve can provide rigidity for the structure and, to a certain extent, protect the internal components of the structure and extend the life of the device.

[0058] Example 3

[0059] Example 3 is basically the same as Example 1, except that: Fig.10 , replace the short steel bars in the two diamond-shaped connectors in Example 1 with Fig.10 The second damper in the rhombus connecting member has fork-shaped joints with bolt holes at both ends, and the two ends of the second damper are connected to the two ends of the short diagonal of the rhombus frame by bolts, and the second damper is a self-resetting damper. The second steel bar in the rhombus connecting member is replaced by the second damper, which can be combined with the first damper to provide additional energy dissipation capacity for the energy dissipation device for reinforcing the mortise and tenon joint of the wooden structure of the present invention, and can better play a buffering role when subjected to external force.

[0060] The above detailed description is only an explanation of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An energy dissipation device for reinforcing the mortise and tenon joints of a wood structure, applied to the mortise and tenon joints formed by a beam and a column, characterized in that: It comprises a first damper, a connecting plate and two groups of diamond-shaped connecting members, the column is provided with a column sleeve, the beam is provided with a beam sleeve, one end of the column sleeve and one end of the beam sleeve are connected to form an auxiliary node; one end of one group of diamond-shaped connecting members is connected to the other end of the column sleeve, and the other end is connected to the connecting plate; one end of another group of diamond-shaped connecting members is connected to the other end of the beam sleeve, and the other end is connected to the connecting plate; one end of the first damper is connected to the connecting plate, and the other end is connected to the auxiliary node, and the two groups of diamond-shaped connecting members are symmetrically arranged relative to the axis of the first damper; The diamond-shaped connecting member comprises 4 connecting steel bars and 1 short steel bar, wherein the 4 connecting steel bars are connected end to end to form a diamond-shaped frame, and the two ends of the short steel bar are respectively connected to the two ends of the short diagonal of the diamond-shaped frame; the two ends of the long diagonal of one group of diamond-shaped frames are respectively connected to the other end of the column connecting member and the connecting plate, and the two ends of the long diagonal of the other group of diamond-shaped frames are respectively connected to the other end of the beam connecting member and the connecting plate; Alternatively: the diamond-shaped connecting member comprises four connecting steel bars and one second damper, the four connecting steel bars are connected end to end to form a diamond-shaped frame, and the two ends of the second damper are respectively connected to the two ends of the short diagonal of the diamond-shaped frame; the two ends of the long diagonal of one group of diamond-shaped frames are respectively connected to the other end of the column connecting member and the connecting plate, and the two ends of the long diagonal of the other group of diamond-shaped frames are respectively connected to the other end of the beam connecting member and the connecting plate; The first damper is a self-resetting damper, the upper end of the self-resetting damper is connected to the auxiliary node by bolts, and the lower end of the self-resetting damper is connected to the connecting plate by bolts; A first fork joint and a second fork joint with bolt holes are respectively provided at both ends of the first damper, the first fork joint is connected to the auxiliary node by bolts, and the second fork joint is connected to the connecting plate by bolts; Or the first damper is provided with a first connecting ear plate and a second connecting ear plate with bolt holes at both ends, the first connecting ear plate is connected to the auxiliary node by bolts, and the second connecting ear plate is connected to the connecting plate by bolts; Or the first damper is provided with a third fork joint with bolt holes and a third connecting ear plate with bolt holes at both ends respectively, the third fork joint is connected to the auxiliary node by bolts, and the third connecting ear plate is connected to the connecting plate by bolts.

2. An energy dissipation device for reinforcing mortise and tenon joints of a wood structure according to claim 1, characterized in that: The crossbeam sleeve comprises a first crossbeam sleeve hoop and a second crossbeam sleeve hoop, both of which are sleeved on the crossbeam; the column sleeve comprises a first column sleeve hoop and a second column sleeve hoop, both of which are sleeved on the column; the first crossbeam sleeve hoop and the first column sleeve hoop are connected to form an auxiliary node, the second column sleeve hoop is connected to one group of the diamond connectors, and the second crossbeam sleeve hoop is connected to another group of the diamond connectors.

3. The energy dissipation device for reinforcing the mortise and tenon joints of a wood structure according to claim 1, characterized in that: The crossbeam sleeve is a crossbeam steel sleeve, and the column sleeve is a column steel sleeve. The crossbeam steel sleeve and the column steel sleeve are respectively sleeved on the crossbeam and the column, and one end of the crossbeam steel sleeve and one end of the column steel sleeve are connected to form an auxiliary node, one end of one group of the diamond-shaped connectors is connected to the other end of the column steel sleeve, and the other end of another group of the diamond-shaped connectors is connected to the crossbeam sleeve.

4. The energy dissipation device for reinforcing the mortise and tenon joints of a wood structure according to claim 1, characterized in that: The connecting steel bars are provided with a fourth fork joint with bolt holes and a fourth connecting ear plate with bolt holes at both ends thereof respectively; the connecting steel bars are connected end to end through the fourth fork joint and the fourth connecting ear plate to form the diamond frame.

5. The energy dissipation device for reinforcing the mortise and tenon joints of a wood structure according to claim 1, characterized in that: The connection plate is in the shape of an isosceles triangle, a semicircle or an inverted T-shape, the two groups of diamond-shaped connectors are respectively connected to the two bottom feet of the connection plate, and the first damper is connected to the top end of the connection plate.

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