CN113089832A - Beam-column mortise-tenon structure containing bendable sheets and manufacturing method thereof - Google Patents
Beam-column mortise-tenon structure containing bendable sheets and manufacturing method thereof Download PDFInfo
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- CN113089832A CN113089832A CN202110315376.1A CN202110315376A CN113089832A CN 113089832 A CN113089832 A CN 113089832A CN 202110315376 A CN202110315376 A CN 202110315376A CN 113089832 A CN113089832 A CN 113089832A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a beam-column mortise-tenon structure containing bendable sheets and a manufacturing method thereof, wherein the structure comprises a wood beam (1) and a wood column (2) which are in mortise-tenon connection, and further comprises the bendable sheets (7); at least four slidable hinged supports (5) are arranged on the wood beam (1) and the wood column (2); the two ends of the bendable pieces (7) are hinged with the slidable hinged support (5), at least two column fasteners are arranged on the wood column (2), a fixing plate (4) is arranged on one side, close to the wood beam (1), of each column fastener, and the slidable hinged support (5) is connected with the fixing plate (4) in a sliding mode. Compared with the prior art, the tenon-and-mortise joint structure has the advantages of simple structure, convenience in maintenance, capability of improving the anti-pulling-out capability and the anti-rotation capability of the tenon-and-mortise joint, and the like.
Description
Technical Field
The invention relates to the field of wood structure reinforcement, in particular to a beam-column mortise and tenon structure containing bendable pieces and a manufacturing method thereof.
Background
The existing ancient building timber structure mainly takes a beam-column structure system as a main structure and is characterized in that column feet are horizontally arranged on a column foundation stone in a floating mode, and beam-column components are connected through mortise and tenon joints to form a beam-column structure system bearing framework; the tenon-and-mortise joint serving as a main energy consumption component of the wooden frame structure of the historic building is typically characterized by semi-rigidity and has the defects of weak bearing capacity and bending resistance and low initial rigidity; the existing traditional wood structure has undergone countless natural disasters and artificial disasters, and the tenon pulling and the extrusion deformation of the tenon and mortise joint are serious, so that the energy consumption capacity of the tenon and mortise joint is greatly reduced, and even the bearing capacity and deformation requirements of the structure can not be met. Therefore, the key problem to be solved urgently in maintaining and reinforcing the traditional wood structure at present is to improve and even solve the potential safety hazards of insufficient bearing capacity, overlarge deformation, reduced energy consumption performance and the like caused by old damage of the wood structure of the historic building by additionally arranging the energy consumption device.
The existing traditional wood structure energy dissipation device such as flat steel, arc-shaped steel plates, tinplate and other traditional metal iron pieces achieves an energy dissipation effect mainly through yielding of materials of the metal iron pieces, the rigidity of metal components is high to improve the initial rigidity of a wood frame, and the device is characterized by being small in size and having certain energy dissipation performance and initial rigidity, but the replacement of the metal pieces after energy dissipation deformation is inconvenient, and even irreversible damage can be brought to wood columns and wood beams.
The invention patent CN110173128A discloses a friction damper-steel support reinforced mortise and tenon joint wood frame structure, which comprises two fixed supports fixed at opposite corners of the frame, two inclined supports and a friction damper. This patent simple to operate easily changes, but the buckling destruction takes place easily for three points of bearing diagonal and attenuator a line, and the support is located the frame diagonal, and the space that occupies is great.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a beam-column mortise-tenon structure containing bendable pieces, which is simple in structure and convenient to maintain and can improve the anti-pulling-out capacity and the anti-rotation capacity of mortise-tenon joints, and a manufacturing method thereof.
The purpose of the invention can be realized by the following technical scheme:
a beam column mortise and tenon joint structure containing a bendable sheet comprises a wood beam and a wood column which are in mortise and tenon joint, and is characterized by also comprising the bendable sheet;
at least four slidable hinged supports are arranged on the wood beam and the wood column;
two ends of the bendable sheet are hinged with the slidable hinged support.
The invention greatly improves the anti-pulling-out capacity and the anti-rotation capacity of the beam column tenon-and-mortise joint, and the bendable piece is used as a replaceable component, thereby reducing the repair cost of the joint, improving the repair efficiency and improving the problems of brittle failure and insufficient bearing capacity and energy consumption capacity of the beam column tenon-and-mortise joint which is used as a traditional wood structure under horizontal repeated load to a certain extent.
Furthermore, the wood column is provided with at least two column fasteners, one side of each column fastener, which is close to the wood beam, is provided with a fixing plate, and the slidable hinged support is connected with the fixing plate in a sliding manner. The inner side of the fixing plate is as close to the wood column as possible.
Furthermore, the column fastener comprises at least two hoops of rectangular frame structures which are parallel to each other, and the fixing plate is vertically connected between the hoops.
Furthermore, the wood beam is provided with at least one beam fastener, the two sides of the beam fastener, which are close to the wood column, are provided with fixing plates, and the slidable hinged support is connected with the fixing plates in a sliding manner. The inner side of the fixing plate is as close as possible to the wooden cross beam. The fixing plates are arranged on the upper surface and the lower surface of the wood beam, and only one fixing plate is arranged on the surface of the wood column, so that the reinforcing structures are slightly different.
Furthermore, the beam fastener comprises at least two hoops of rectangular frame structures which are parallel to each other, and the fixing plate is vertically connected between the hoops.
Furthermore, the fixed plate is fixedly provided with at least two slide rails, the slidable hinged support is embedded in the slide rails, and two ends of each slide rail are provided with baffle plates for preventing the slidable hinged support from sliding out. The position of the baffle can be adjusted according to the performance improvement requirement of the node; the contact interface of the sliding rail and the slidable hinged support is ensured to have a proper amount of lubricating oil so as to facilitate the sliding of the slidable hinged support.
Furthermore, two ends of the bendable sheet are provided with clamps for fixing the bendable sheet, and two sides of each clamp are connected with the slidable hinged support bearings.
Furthermore, a roller bearing is arranged in a round hole in one side of the slidable hinged support, a bearing roller is arranged on the clamp, and the roller bearing and the bearing roller are connected in a penetrating and rotating mode.
Furthermore, the cross sections of the wood beam and the wood column are rectangular, the wood column is provided with a mortise, the wood beam is provided with a tenon, and the wood beam and the tenon are connected to the mortise and tenon joint.
The manufacturing method of the beam-column mortise-tenon structure containing the bendable sheets comprises the following steps:
(1) mounting a clamp to both ends of the bendable sheet, and then mounting slidable hinge supports to both sides of the clamp;
(2) lubricating oil is added into the sliding rail, the slidable hinged support and the sliding rail on the fixed plate are assembled, and after the two ends of the slidable hinged support can move freely along with the sliding rail, the baffle at the end part of the sliding rail is fixed by screws;
(3) positioning a fixing plate on the wood beam through an anchor ear, and fixing the other side of the anchor ear through a bolt;
(4) and fixing the fixing plate on the wood column according to the position of the fixing plate on the wood beam, so that the two ends of the bendable piece are positioned in the middle of the slide rail, and the manufacturing of the beam-column mortise-tenon structure containing the bendable piece is completed.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, the wood beam and the wood column are connected through the bendable sheet, so that the anti-pulling capacity and the anti-rotation capacity of the beam-column tenon-and-mortise joint are greatly improved, and the problems of brittle failure and insufficient bearing capacity and energy consumption capacity of the traditional wood structure of the beam-column tenon-and-mortise joint under horizontal repeated load are improved to a certain extent;
(2) the invention has simple structure and fewer components, reduces the repair cost of the node and improves the repair efficiency due to the existence of the replaceable steel sheet, and is convenient to prefabricate and install;
(3) the bendable pieces are not easy to buckle and destabilize, and compared with a reinforcing scheme adopting a larger diagonal bracing, the invention saves more space.
Drawings
FIG. 1 is a front view of a mortise and tenon structure of a beam column in the embodiment;
FIG. 2 is a schematic front view of an embodiment of a post fastener;
FIG. 3 is a schematic rear view of an exemplary post fastener;
FIG. 4 is a partial schematic view of the top end of the slide rail in the embodiment;
FIG. 5 is a partial view of the bottom end of the slide rail in the embodiment;
FIG. 6 is a schematic view of a roller bearing and bearing rollers according to an embodiment;
FIG. 7 is a schematic view showing the connection of the bearing roller and the jig in the embodiment;
FIG. 8 is a top view of an embodiment of the bendable tab assembled with a clamp;
FIG. 9 is a view showing the connection between the hinge bracket and the bendable sheet in the embodiment;
FIG. 10 is a schematic view of the connection between the hinge bracket and the slide rail in the embodiment;
the reference numbers in the figures indicate: the device comprises a wood beam 1, a wood column 2, a mortise and tenon joint 3, a fixing plate 4, a slidable hinged support 5, a bendable sheet 7, a slide rail 8, a baffle 9, a bearing roller 10 and a clamp 11.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
A beam-column mortise-tenon joint structure containing bendable sheets is shown in figure 1, and comprises a wood beam 1 and a wood column 2 which are in mortise-tenon joint, and also comprises bendable sheets 7; four slidable hinged supports 5 are arranged on the wooden beam 1 and the wooden column 2; the two ends of the bendable pieces 7 are hinged with the slidable hinge supports 5. The cross-sectional shapes of the wood beam 1 and the wood column 2 are rectangular, the wood column 2 is provided with a mortise, the wood beam 1 is provided with a tenon, and the wood beam 1 and the tenon are connected to the mortise node 3.
The invention greatly improves the anti-pulling-out capacity and the anti-rotation capacity of the beam column mortise-tenon joint, and the bendable piece 7 is used as a replaceable component, thereby reducing the repair cost of the joint, improving the repair efficiency and improving the problems of brittle failure and insufficient bearing capacity and energy consumption capacity of the beam column mortise-tenon joint which is used as a traditional wood structure under horizontal repeated load to a certain extent.
As shown in fig. 2-3, the wooden pillar 2 is provided with two pillar fasteners, the pillar fasteners are provided with a fixed plate 4 at one side close to the wooden beam 1, and a slidable hinge support 5 is slidably connected with the fixed plate 4. The inner side of the fixing plate 4 is as close as possible to the wooden pole 2.
The post fastener comprises two hoops of rectangular frame structures which are parallel to each other, and the fixing plate 4 is vertically connected between the hoops.
The wooden beam 1 is provided with a beam fastener, the beam fastener is provided with fixing plates 4 at two sides close to the wooden column 2, and the slidable hinged support 5 is connected with the fixing plates 4 in a sliding manner. The inner side of the fixing plate 4 is as close as possible to the wooden cross beam 1. The fixing plates 4 are arranged on the upper surface and the lower surface of the wood beam 1, and only one fixing plate 4 is arranged on the surface of the wood column 2, so that the reinforcing structures are slightly different.
The beam fastener comprises two hoops of rectangular frame structures which are parallel to each other, and the fixing plate 4 is vertically connected between the hoops.
Two slide rails 8 are fixedly arranged on the fixed plate 4, the slidable hinged support 5 is embedded in the slide rails 8, and two ends of each slide rail 8 are provided with baffle plates 9 for preventing the slidable hinged support 5 from sliding out. The position of the baffle 9 can be adjusted according to the performance improvement requirement of the node; the contact interface of the sliding rail 8 and the slidable articulated support 5 ensures a proper amount of lubricating oil to facilitate the sliding of the slidable articulated support 5.
As shown in fig. 8 to 9, the bendable piece 7 is provided at both ends with clamps 11 for fixing the bendable piece 7, and the clamps 11 are bearing-coupled to the slidable hinge support 5 at both sides.
As shown in fig. 6-7, a roller bearing is installed in a circular hole at one side of the slidable hinge support 5, a bearing roller 10 is arranged on the clamp 11, and the roller bearing and the bearing roller 10 are rotatably connected through insertion.
Wherein, wood crossbeam 1, post 2 and tenon fourth of twelve earthly branches node 3 are existing structure, and material and specific size can be regarded as having confirmed, and the material of fixed plate 4, flexible piece 7, slide rail 8 and baffle 9 is the steel, and reinforced structure's size is confirmed according to existing structure, and fixed plate 4 width is greater than flexible piece 7 width, and the size slightly is less than the post cross-section, in addition, should guarantee that the staple bolt can fix fixed plate 4 on the post surface. The anchor ear and the fixing plate 4, the slide rail 8 and the fixing plate 4 are welded, and the anchor ear is made of mild steel.
A manufacturing method of the beam-column mortise-tenon structure comprising the bendable pieces comprises the following steps:
(1) attaching the clamps 11 to both ends of the bendable piece 7, and then attaching the slidable hinge supports 5 to both sides of the clamps 11;
(2) as shown in fig. 4, 5 and 10, lubricating oil is added into the sliding rail 8, and the slidable hinge support 5 and the sliding rail 8 on the fixed plate 4 are assembled, so that after both ends of the slidable hinge support 5 can freely move along with the sliding rail 8, the baffle 9 at the end part of the sliding rail is fixed by screws; the anchor ear can be fixed at the position of the plate 4 without slipping;
(3) positioning a fixing plate 4 on the wood beam 1 through an anchor ear, and fixing the other side of the anchor ear through a bolt;
(4) fixing the fixing plate 4 on the wooden column 2 according to the position of the fixing plate 4 on the wooden beam 1, and enabling the two ends of the bendable pieces 7 to be located in the middle of the sliding rail 8, namely, completing the manufacturing of the beam column mortise and tenon structure containing the bendable pieces.
Working principle of the invention
The method is mainly used for reinforcing and repairing the traditional wood structure, and when the method is actually used in engineering, the method for improving the node-changing performance can be implemented according to the specific size and earthquake-resistant requirements of the existing building. When this structure tenon fourth of twelve earthly branches wood node takes place to rotate under the earthquake effect, take the downward rotation as an example, but crooked piece 7 of wooden crossbeam 1 below can regard as the relative rotation of supporting control beam column to a certain extent, but movable pin joint makes crooked piece 7 break away from complicated stress state, and can crooked piece 7 accessible pressurized buckling energy consumption under the macroseism effect, protection node. And the bendable sheets 7 on the upper part of the wooden beam 1 can provide rigidity through tension, so that the phenomenon that the tenon of the wooden beam is seriously pulled out is prevented. After the earthquake action is finished, the reinforcing structure can be repaired by replacing the bendable sheets 7, the operation is simple, and the cost is low.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A beam column mortise and tenon joint structure containing bendable sheets comprises a wood beam (1) and a wood column (2) which are in mortise and tenon joint, and is characterized by also comprising the bendable sheets (7);
at least four slidable hinged supports (5) are arranged on the wood beam (1) and the wood column (2);
two ends of the bendable sheet (7) are hinged with the slidable hinged support (5).
2. The beam-column mortise structure comprising the bendable pieces as claimed in claim 1, wherein the wooden column (2) is provided with at least two column fasteners, one side of the column fasteners close to the wooden beam (1) is provided with a fixed plate (4), and the slidable hinge support (5) is slidably connected with the fixed plate (4).
3. The structure of the beam-column tenon-and-mortise comprising the bendable pieces as claimed in claim 2, wherein the column fastener comprises at least two hoops of rectangular frame structures which are parallel to each other, and the fixing plates (4) are vertically connected between the hoops.
4. The beam-column mortise and tenon joint structure comprising the bendable sheets according to claim 1, wherein the wooden beam (1) is provided with at least one beam fastener, the beam fastener is provided with a fixing plate (4) at both sides close to the wooden column (2), and the slidable hinge support (5) is slidably connected with the fixing plate (4).
5. The structure of the beam-column tenon-and-mortise comprising the bendable pieces as claimed in claim 4, wherein the beam fastener comprises at least two hoops of rectangular frame structures which are parallel to each other, and the fixing plates (4) are vertically connected between the hoops.
6. The beam-column mortise and tenon joint structure comprising the bendable pieces as claimed in claim 1 or 4, wherein at least two slide rails (8) are fixedly arranged on the fixing plate (4), the slidable hinge support (5) is embedded in the slide rails (8), and two ends of the slide rails (8) are provided with baffles (9) for preventing the slidable hinge support (5) from sliding out.
7. The beam-column mortise and tenon structure comprising the bendable sheet according to claim 1, wherein the two ends of the bendable sheet (7) are provided with clamps (11) for fixing the bendable sheet (7), and two sides of the clamps (11) are in bearing connection with the slidable hinge support (5).
8. The structure of the beam column mortise and tenon joint containing the bendable sheet according to claim 7, wherein a roller bearing is installed in a round hole at one side of the slidable hinge support (5), a bearing roller (10) is installed on the clamp (11), and the roller bearing and the bearing roller (10) are connected in a penetrating and rotating manner.
9. The beam-column mortise and tenon structure comprising the bendable sheets according to claim 1, wherein the cross sections of the wood beam (1) and the wood column (2) are rectangular, the wood column (2) is provided with mortise holes, and the wood beam (1) is provided with tenons which are connected with the mortise and tenon joints (3).
10. A method for manufacturing a beam-column mortise and tenon structure comprising bendable sheets according to any one of claims 1 to 9, comprising the steps of:
(1) mounting clamps (11) to both ends of the bendable sheet (7), and then mounting the slidable hinge supports (5) to both sides of the clamps (11);
(2) lubricating oil is added into the sliding rail (8), the slidable hinged support (5) and the sliding rail (8) on the fixed plate (4) are assembled, and after the two ends of the slidable hinged support (5) can freely move along with the sliding rail (8), a baffle (9) at the end part of the sliding rail is fixed by screws;
(3) positioning a fixing plate (4) on the wood beam (1) through a hoop, and fixing the other side of the hoop through a bolt;
(4) fixing the fixing plate (4) on the wooden column (2) according to the position of the fixing plate (4) on the wooden beam (1), and enabling the two ends of the bendable pieces (7) to be located in the middle of the sliding rail (8), namely, completing the manufacturing of the beam-column mortise-tenon structure containing the bendable pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315376.1A CN113089832B (en) | 2021-03-24 | 2021-03-24 | Beam-column mortise and tenon joint structure containing bendable sheet and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315376.1A CN113089832B (en) | 2021-03-24 | 2021-03-24 | Beam-column mortise and tenon joint structure containing bendable sheet and manufacturing method thereof |
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| CN113089832A true CN113089832A (en) | 2021-07-09 |
| CN113089832B CN113089832B (en) | 2022-10-28 |
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| CA2365613A1 (en) * | 2000-01-25 | 2001-08-02 | Nippon Eisei Center Co., Ltd. | Earthquake-proofing reinforcing metal fitting |
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| CN102277979A (en) * | 2011-05-04 | 2011-12-14 | 南京工业大学 | Wood structure tenon-and-mortise joint reinforced by energy-consuming arc-shaped steel plate |
| CN206298980U (en) * | 2016-11-02 | 2017-07-04 | 西安建筑科技大学 | Shape memory alloy spring damper |
| CN206636252U (en) * | 2017-04-11 | 2017-11-14 | 西安建筑科技大学 | The runback bit architecture that a kind of Tenon nodal plane arc marmem is reinforced |
| CN206737465U (en) * | 2017-05-09 | 2017-12-12 | 西安建筑科技大学 | A kind of three joining beams are hinged automatic runback device |
| CN209384424U (en) * | 2018-10-23 | 2019-09-13 | 西安建筑科技大学 | A kind of timber buildings Tenon node arcuate friction damper |
| CN110656699A (en) * | 2019-10-16 | 2020-01-07 | 南京林业大学 | Assembled bamboo beam column energy dissipation shock attenuation node |
| CN111827505A (en) * | 2020-07-15 | 2020-10-27 | 杨元清 | Shape memory alloy damper |
| CN112127657A (en) * | 2020-10-29 | 2020-12-25 | 福州大学 | Nondestructive reinforcing device and method for tenon-and-mortise joint of semi-rigid and anti-stripping wood structure |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2365613A1 (en) * | 2000-01-25 | 2001-08-02 | Nippon Eisei Center Co., Ltd. | Earthquake-proofing reinforcing metal fitting |
| KR200358919Y1 (en) * | 2004-05-20 | 2004-08-11 | (주) 선구엔지니어링 | Reinforcement member for constructure capable of install constructure of variable distance-across |
| CN102277979A (en) * | 2011-05-04 | 2011-12-14 | 南京工业大学 | Wood structure tenon-and-mortise joint reinforced by energy-consuming arc-shaped steel plate |
| CN206298980U (en) * | 2016-11-02 | 2017-07-04 | 西安建筑科技大学 | Shape memory alloy spring damper |
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| CN206737465U (en) * | 2017-05-09 | 2017-12-12 | 西安建筑科技大学 | A kind of three joining beams are hinged automatic runback device |
| CN209384424U (en) * | 2018-10-23 | 2019-09-13 | 西安建筑科技大学 | A kind of timber buildings Tenon node arcuate friction damper |
| CN110656699A (en) * | 2019-10-16 | 2020-01-07 | 南京林业大学 | Assembled bamboo beam column energy dissipation shock attenuation node |
| CN111827505A (en) * | 2020-07-15 | 2020-10-27 | 杨元清 | Shape memory alloy damper |
| CN112127657A (en) * | 2020-10-29 | 2020-12-25 | 福州大学 | Nondestructive reinforcing device and method for tenon-and-mortise joint of semi-rigid and anti-stripping wood structure |
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|---|---|
| CN113089832B (en) | 2022-10-28 |
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