CN210421988U

CN210421988U - Hidden reinforcing and damping energy dissipation device suitable for wood structure side-span mortise-tenon joint

Info

Publication number: CN210421988U
Application number: CN201920954091.0U
Authority: CN
Inventors: 谢启芳; 张恩奇; 苗壮; 张保壮; 李胜英
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-04-28
Anticipated expiration: 2029-06-24

Abstract

The utility model provides a hidden reinforcement and shock attenuation power consumption device suitable for timber structure side span tenon fourth of twelve earthly branches node, a tenon fourth of twelve earthly branches node for timber beams and timber column junction, including setting up the metal steel bushing at tenon periphery and fourth of twelve earthly branches mouth internal week, the metal steel bushing is trapezoidal and the upper base towards the timber column along timber beams length direction's longitudinal section, lower base towards the timber beams and be open state, be provided with wedge viscoelastic rubber piece in metal steel bushing inboard, be provided with the hidden groove of lining up along length direction in the timber beams, be provided with the sleeve pipe of built-in shape memory alloy silk in the hidden groove, shape memory alloy silk runs through metal steel bushing and timber column and uses the ground tackle anchor solid. The utility model discloses effectively solved image structure outward appearance, tenon and mortise hole's extrusion destruction, pull out the tenon and destroy and lack the defect from restoring to the throne among the traditional method, under the characteristic prerequisite of not changing tenon fourth of the twelve earthly branches node atress, can improve tenon fourth of the twelve earthly branches node bearing capacity, increase the power consumption ability, reduce and pull out tenon volume, have after the shake from restoring to the throne the function, can improve tenon fourth of the twelve earthly branches node life.

Description

Hidden reinforcing and damping energy dissipation device suitable for wood structure side-span mortise-tenon joint

Technical Field

The invention belongs to the technical field of damping and energy consumption of timber structures of ancient buildings, and particularly relates to a hidden type reinforcing and damping and energy consumption device suitable for timber structure side-span mortise and tenon joints.

Background

The ancient architecture wood structure is aged and damaged in different degrees due to the fact that countless adverse factors such as wind, rain, earthquake, war, microbial corrosion and the like are experienced in the ancient architecture wood structure, and therefore the ancient architecture wood structure is a problem to be solved urgently at present. The ancient building timber structure tenon fourth of twelve earthly branches node not only can produce certain rotation and can also undertake certain moment of flexure load and have typical semirigid characteristics, and on the one hand it has good shock attenuation power consumption effect, and on the other hand the most fragile position in the ancient building timber structure of tenon fourth of twelve earthly branches node destroys and often takes place in tenon fourth of twelve earthly branches node.

Therefore, the research on the strengthening and repairing of the mortise and tenon joint of the wooden structure of the ancient building is particularly important, and the traditional strengthening and repairing method of the mortise and tenon joint mainly comprises the following steps: CFRP reinforcement, arc steel plate reinforcement, flat steel reinforcement, nail-removing reinforcement, diagonal bracing reinforcement, bar-planting reinforcement and the like. The method can reinforce and protect the mortise and tenon joint of the wood structure to a certain extent.

The traditional method for reinforcing and repairing the mortise and tenon joints has several key disadvantages: (1) affecting the architectural appearance of the structure; (2) the problems of extrusion damage and tenon drawing damage of the tenon and the mortise are not effectively solved; (3) lack of self-resetting properties.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the hidden type reinforcing and damping energy consumption device suitable for the wood structure side-span mortise and tenon joint, effectively overcomes the defects of visual structure appearance, extrusion damage of tenons and mortise ports, tenon pulling damage and lack of self-resetting in the traditional method, can improve the bearing capacity of the mortise and tenon joint, increase the energy consumption capacity and reduce the tenon pulling amount on the premise of not changing the stress characteristic of the mortise and tenon joint, has the self-resetting function after earthquake and can prolong the service life of the mortise and tenon joint.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a hidden reinforcement and shock attenuation power consumption device suitable for timber structure side span tenon fourth of twelve earthly branches node, a tenon fourth of twelve earthly branches node for timber beams 1 and 2 junctions of timber column, including setting up at the peripheral metal steel bushing 3 with the internal week of fourth of twelve earthly branches mouth 21 of tenon 11, metal steel bushing 3 is trapezoidal and goes up end towards timber column 2 along 1 length direction's of timber beams longitudinal section, go to the bottom towards timber beams 1 and be open state, be provided with wedge viscoelastic rubber block 4 in metal steel bushing 3 inboard, be provided with along length direction's the hidden groove 5 that link up in timber beams 1, be provided with the sleeve pipe 6 of built-in shape memory alloy silk 7 in hidden groove 5, the one end that shape memory alloy silk 7 stretches out timber beams 1 runs through metal steel bushing 3 and timber column 2 with ground tackle 10 anchor.

The tenon 11 is one of a transparent tenon and a semi-transparent tenon.

The length of the upper bottom of the metal steel sleeve 3 is equal to the height of the tenon 11, the length of the lower bottom is smaller than the sum of the height of the tenon 11 and the height of the wedge-shaped viscoelastic rubber block 4 by 1-2mm, and the widths of the upper bottom and the lower bottom are equal to the width of the tenon 11.

The upper bottom of the metal steel sleeve 3 is in a semi-closed state, and a circular hole which takes the section core of the tenon 11 as the center of a circle and has the radius 3-5 times that of the shape memory alloy wire 7 is reserved.

The metal steel sleeve 3 is made of galvanized steel with a low yield point, the wall thickness is 1-2mm, the wedge-shaped viscoelastic rubber block 4 is made of natural rubber or polyurethane rubber, and the wedge-shaped viscoelastic rubber block 4 is connected with the metal steel sleeve 3 through an adhesive.

The first hidden groove 5 penetrates through the central axis of the wood beam 1.

The sleeve 6 is made of one of plastic, metal and FRP, a bonding material is filled into a gap among the first hidden groove 5, the sleeve 6 and the shape memory alloy wire 7 to be fixedly connected, and the bonding material is one of phenolic resin, phenolic resin modified resin, isocyanate, melamine urea formaldehyde copolycondensation resin and epoxy resin.

And a second hidden groove 22 is formed in the outer side of the wood column 2, and an anchor plate 8, an anchor backing plate 9 and an anchor device 10 which are used for anchoring the shape memory alloy wires 7 are arranged in the second hidden groove 22.

The size of the cross section of the second hidden groove 22 is consistent with that of the anchor plate 8, and the depth of the second hidden groove is equal to the sum of the heights of the anchor plate 8, the anchor backing plate 9 and the anchor 10.

The anchorage device 10 is one of a clip type anchorage device, a bonding type anchorage device, a support type anchorage device, a cone plug type anchorage device or a nut anchorage device.

Compared with the prior art, the invention has the beneficial effects that:

1. the reinforcing protection method carries out reinforcing protection work on the tenon-and-mortise joints of the wooden structure of the ancient building on the premise of not influencing the appearance of the building, and all reinforcing protection devices are arranged inside the structure.

2. The invention keeps the original semi-rigid characteristic of the tenon-and-mortise joint of the wooden structure of the historic building. According to the stress characteristics of the mortise and tenon joint, the wedge-shaped rubber block is arranged between the tenon and the mortise, so that the extrusion damage of the tenon and the mortise is solved.

3. The invention has the function of self-resetting after the earthquake. The shape memory alloy wires are implanted into the wood beam to ensure that the mortise and tenon joint can generate a certain tenon pulling amount, and the structure can be restored to the initial position by the shape memory effect of the shape memory alloy wires after the earthquake.

4. The invention improves the energy consumption capability of the mortise and tenon joint. When the tenon-and-mortise joint rotates, the rubber block is extruded and deformed to consume energy; when the tenon-and-mortise joints generate tenon pulling deformation, on one hand, the friction between the tenon and the rubber block generates heat energy consumption, and on the other hand, the shape memory alloy deformation absorbs the energy consumption of the input structure.

5. The invention has the characteristic of easy deterioration. When the reinforcing element is aged and damaged, the element can be conveniently replaced.

Drawings

Fig. 1 is an exploded schematic view of the present invention.

FIG. 2 is a three-dimensional isometric view of a galvanized steel sleeve.

FIG. 3 is a three-dimensional enlarged partial view of a mortise opening.

Fig. 4 is a sectional view of a wood beam.

Reference numbers in the schematic drawings: 1. a wood beam; 11. a tenon; 2. a wood column; 21. opening the mortise; 22. a hidden slot; 3. a metal steel sleeve: 4. a wedge-shaped viscoelastic rubber block 4; 5. a hidden slot; 6. a sleeve; 7. a shape memory alloy wire; 8. An anchor plate; 9. an anchor backing plate; 10. an anchorage device.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

As shown in figure 1, the concealed reinforcing, damping and energy-consuming device is suitable for the edge-crossing mortise-tenon joint of a wood structure, is used for the mortise-tenon joint at the joint of a wood beam 1 and a wood column 2, and comprises a metal steel sleeve 3 arranged on the periphery of a tenon 11 and the inner periphery of a mortise opening 21. In the present invention, the tenon 11 may be a through tenon or a semi-transparent tenon.

The structure of the metal steel jacket 3 is shown in fig. 2, the longitudinal section of the metal steel jacket along the length direction of the wood beam 1 is trapezoidal, the longitudinal section of the metal steel jacket is isosceles trapezoid in the embodiment, the upper bottom of the metal steel jacket faces the wood column 2, the metal steel jacket is in a semi-closed state, a round hole which takes the section center of the tenon 11 as the center of a circle and has the radius 3-5 times that of the shape memory alloy wire 7 is reserved, and the lower bottom of the metal steel jacket faces the wood beam 1 and is. The length of the upper bottom of the metal steel sleeve 3 is equal to the height of the tenon 11, the length of the lower bottom is smaller than the sum of the height of the tenon 11 and the height of the wedge-shaped viscoelastic rubber block 4 by 1-2mm, and the widths of the upper bottom and the lower bottom are equal to the width of the tenon 11. The wedge-shaped viscoelastic rubber block 4 is arranged on the inner side of the metal steel sleeve 3, and the wedge-shaped viscoelastic rubber block 4 is only arranged at the waist position of the trapezoid in the embodiment.

The metal steel sleeve 3 can be made of galvanized steel with low yield point and can be galvanized, the wall thickness is 1-2mm, the wedge-shaped viscoelastic rubber block 4 is made of natural rubber or polyurethane rubber, and the wedge-shaped viscoelastic rubber block 4 and the metal steel sleeve 3 can be connected by adopting an adhesive.

As shown in fig. 1 and 3, the outer side of the wood column 2 is provided with a hidden groove two 22, and an anchor plate 8, an anchor backing plate 9 and an anchor 10 for anchoring the shape memory alloy wire 7 are arranged in the hidden groove two 22. The size of the cross section of the second hidden groove 22 is consistent with that of the anchor plate 8, and the depth of the second hidden groove is equal to the sum of the heights of the anchor plate 8, the anchor backing plate 9 and the anchor 10. The anchor 10 is one of a clip type anchor, a bond type anchor, a support type anchor, a cone plug type anchor or a nut anchor.

As shown in fig. 1 and 4, a through hidden groove 5 is provided in the wooden beam 1 along the central axis in the longitudinal direction, a sleeve 6 containing a shape memory alloy wire 7 is provided in the hidden groove 5, and the shape memory alloy wire 7 is anchored by an anchor 10 through a metal steel jacket 3 and a wooden pillar 2. The sleeve 6 is made of one of plastic, metal and FRP, and the connecting material of the shape memory alloy wire 7, the first hidden groove 5 and the sleeve 6 is one of phenolic resin, phenolic resin modified resin, isocyanate, melamine urea formaldehyde copolycondensation resin and epoxy resin.

The installation method of the invention comprises the following steps:

1. and determining the sizes of the metal steel sleeve 3 and the wedge-shaped viscoelastic rubber block 4 according to the size of the existing reinforcing structure, and finishing the processing and manufacturing.

2. And processing a second hidden groove 22 for placing a clamp on the side of the 2-mortise opening 21 of the wood column opposite to the wood beam according to the form and the size of the selected anchor 10.

3. A first hidden groove 5 for implanting shape memory alloy wires (SMA)7 is processed on the wood beam 1 along the central axis.

4. The wedge-shaped viscoelastic rubber block 4 is connected with the metal steel sleeve 3 along the drawing surface by using the selected adhesive.

5. The sleeve 6 is placed into a hidden groove I5 which penetrates through the wood beam longitudinally, the shape memory alloy wire (SMA)7 is placed into the sleeve 6, and the selected bonding material is poured into the gap between the sleeve 6 and the shape memory alloy wire to be fixedly connected.

6. And sleeving the metal sleeve 3 finished in the fourth step into the mortise opening 21.

7. And (4) inserting the device completed in the fifth step into the galvanized metal steel sleeve 3 in the mortise 21. The implanted shape memory alloy wire 7 passes through a hole reserved in the semi-closed section of the galvanized metal sleeve 3.

8. And (3) placing the selected anchor plate 8, anchor backing plate 9 and anchor 10 into the concealed groove I5 manufactured in the second step to anchor the shape memory alloy wire 7 implanted into the beam, and applying prestress.

The working principle of the invention is as follows:

when the wood structure tenon-and-mortise joint of the device is installed and rotates and deforms under the action of load, the wedge-shaped viscoelastic rubber block is compressed to deform in an extruding way, and the energy of an input structure is absorbed for energy consumption; when the tenon-and-mortise joint is subjected to tenon pulling damage under the action of load, the tenon and the wedge-shaped viscoelastic rubber block are subjected to friction action, part of energy is converted into heat for energy consumption, and meanwhile, the shape memory alloy wire is deformed to absorb part of energy for energy consumption input into the structure; when the tenon-and-mortise joint rotates and pulls out the tenon simultaneously under the action of load, three parts of energy consumption effects participate in the work simultaneously; after the load effect is finished, the structure is restored to the initial state due to the shape memory effect of the shape memory alloy wire, so that the residual deformation of the structure is effectively eliminated, and the self-resetting function of the structure is realized.

Claims

1. A hidden reinforcing and damping energy dissipation device suitable for wood structure side span mortise and tenon joints is used for the mortise and tenon joints at the joints of a wood beam (1) and a wood column (2), it is characterized by comprising a metal steel sleeve (3) arranged at the periphery of a tenon (11) and the inner periphery of a mortise opening (21), wherein the longitudinal section of the metal steel sleeve (3) along the length direction of a wood beam (1) is trapezoidal, the upper bottom of the metal steel sleeve faces a wood column (2), the lower bottom of the metal steel sleeve faces the wood beam (1) and is in an open state, a wedge-shaped viscoelastic rubber block (4) is arranged on the inner side of the metal steel sleeve (3), a through hidden groove I (5) is formed in the wood beam (1) along the length direction, a sleeve (6) with a built-in shape memory alloy wire (7) is arranged in the hidden groove I (5), and one end, extending out of the wood beam (1), of the shape memory alloy wire (7) penetrates through the metal steel sleeve (3) and the wood column (2) and is anchored by an anchorage device (10).

2. The concealed reinforcing and damping energy dissipation device suitable for the edge-crossing mortise-tenon joint of the wood structure according to claim 1, wherein the tenon (11) is one of a transparent tenon and a semi-transparent tenon.

3. The concealed reinforcing and damping energy dissipation device suitable for the wood structure edge-crossing mortise-tenon joint according to claim 1, wherein the length of the upper bottom of the metal steel sleeve (3) is equal to the height of the tenon (11), the length of the lower bottom is less than the sum of the height of the tenon (11) and the height of the wedge-shaped viscoelastic rubber block (4) by 1-2mm, and the widths of the upper bottom and the lower bottom are equal to the width of the tenon (11).

4. The concealed reinforcing and damping energy dissipation device suitable for the edge-crossing mortise-tenon joint of the wood structure according to claim 1, wherein the upper bottom of the metal steel sleeve (3) is in a semi-closed state, and a circular hole which takes a section core of the tenon (11) as a circle center and has a radius 3-5 times that of the shape memory alloy wire (7) is reserved.

5. The concealed reinforcing and damping energy dissipation device suitable for the wood structure edge-crossing mortise-tenon joint is characterized in that the metal steel sleeve (3) is made of galvanized steel with a low yield point, the wall thickness is 1-2mm, the wedge-shaped viscoelastic rubber block (4) is made of natural rubber or polyurethane rubber, and the wedge-shaped viscoelastic rubber block (4) is connected with the metal steel sleeve (3) through an adhesive.

6. The concealed reinforcing and damping energy dissipation device suitable for the edge-crossing mortise-tenon joints of the wood structure according to claim 1, wherein the first concealed groove (5) is formed in a penetrating mode along the central axis of the wood beam (1).

7. The concealed reinforcing and damping energy dissipation device suitable for the wood structure edge-crossing mortise-tenon joint according to claim 1, wherein the sleeve (6) is made of one of plastic, metal and FRP, a bonding material is filled into a gap between the first concealed groove (5), the sleeve (6) and the shape memory alloy wire (7) for fixed connection, and the bonding material is one of phenolic resin, phenolic resin modified resin, isocyanate, melamine urea formaldehyde copolycondensation resin and epoxy resin.

8. The concealed reinforcing and damping energy dissipation device suitable for the edge-crossing mortise-tenon joints of the wood structure according to claim 1, wherein a second concealed groove (22) is formed in the outer side of the wood column (2), and an anchor plate (8), an anchor backing plate (9) and an anchor (10) for anchoring the shape memory alloy wires (7) are arranged in the second concealed groove (22).

9. The concealed reinforcing and damping energy dissipation device suitable for the edge-crossing mortise-tenon joints of the wood structures according to claim 8, wherein the sectional dimension of the second concealed groove (22) is consistent with that of the anchor plate (8), and the depth of the second concealed groove is equal to the sum of the heights of the anchor plate (8), the anchor backing plate (9) and the anchor (10).

10. The concealed reinforcing and damping energy dissipation device applicable to the edge-crossing mortise-tenon joints of wood structures according to claim 1, wherein the anchor (10) is one of a clip type anchor, a bonding type anchor, a support type anchor, a cone plug type anchor or a nut type anchor.