CN114274282B

CN114274282B - Orthogonal laminated wood jointed by wood nails and preparation method thereof

Info

Publication number: CN114274282B
Application number: CN202111608090.9A
Authority: CN
Inventors: 王硕; 阙泽利; 王菲彬; 陈志渊
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-08-12
Anticipated expiration: 2041-12-27
Also published as: CN114274282A

Abstract

The invention discloses an orthogonal laminated wood jointed by wood nails, which comprises an orthogonal laminated wood, wherein each layer of the orthogonal laminated wood is formed by assembling a plurality of laminated plates (3); two adjacent mutually perpendicular's plywood (3) intersect is a fold and intersects unit (5), and peg (6) setting of staggering, and the point of entry is located fold and intersects unit (5) central line, and same nail (6) of driving into the horizontally is a nail layer (7), and peg (6) of adjacent nail layer (7) stagger each other in vertical direction, and the nail angle of driving into (9) of peg (6) of adjacent nail layer (7) are opposite. The invention also discloses a preparation method of the wood-nail-jointed orthogonal laminated wood. The invention does not need to use any adhesive as a gluing medium, can effectively reduce the release of harmful gases such as formaldehyde and the like, lightens the environmental burden, has high processing efficiency, and is convenient for post treatment and recycling when being nailed into a component.

Description

Orthogonal laminated wood jointed by wood nails and preparation method thereof

Technical Field

The invention relates to a wood nail-jointed orthogonal laminated wood and a preparation method thereof, belonging to the technical field of innovation of wood engineering material production technology.

Background

Cross-linked veneer (CLT) is a factory-prefabricated engineered wood product in the form of rectangular, linear, or planar board that is made up of at least 3 layers of sawn solid wood or structural composite board by orthogonal assembly and pressing with structural adhesive. The CLT can be used for building middle-high-rise civil and non-civil buildings, can completely replace traditional reinforced concrete and brick-concrete structures, can form a mixed structure with reinforced concrete or other engineering wood products, can realize high added value utilization of wood 'inferior wood high-quality use and small wood high-quality use', has the advantages of quick assembly, low noise and the like, is beneficial to promoting the leap-type development of field assembly type wood structure buildings, and contributes to sustainable urban development with lower carbon and more environmental protection.

At present, cold curing adhesives are mostly adopted for CLT wood used in houses, and the adhesives adopted at present mainly comprise single-component polyurethane adhesives, two-component polyurethane adhesives, polyvinyl acetate-isocyanate adhesives and resorcinol formaldehyde resin adhesives. Most of glue has poor heat resistance, strong acid resistance and strong alkali resistance, and is easy to hydrolyze under high temperature and high humidity to reduce the bonding strength, thereby reducing the service life of the glue; and irritant toxic gas can be released in the construction and use processes, so that the health of people is harmed to a certain extent; the use of glue is not favorable to CLT's recycle, and its dismantlement degree of difficulty has been increaseed to the glue film of large tracts of land, has not only increased building waste, has reduced the resource recovery rate moreover. Therefore, it is important to find a more environment-friendly, efficient and convenient connection mode.

The use of the wooden nails has a history in ancient buildings in China, the wooden nails are used for reinforcing the mortise and tenon structure in the traditional wooden structure building, namely the mortise and tenon structure and the wooden nails are matched for use in the traditional wooden structure, and the effect of reinforcing the structure is achieved.

With the development of the industrial revolution, various metal nails, metal connectors and industrial glue are emerging continuously, and the traditional wooden nails gradually fade the visual field of people.

Based on the design concept of strong node and weak component of modern wood structure building, node connection is usually used as an important link in the study of wood structure. Pin shaft metal connecting pieces represented by nails, bolts, pins and the like are widely applied to modern heavy wood structures due to good toughness and safe reliability. However, the metal fastener inevitably loosens and rusts over time (as shown in fig. 1), and the stability of the structure is reduced; and also form thermal bridges in the wood, reducing the insulating effect in the room, etc. (see fig. 2).

The wooden nail has the advantages of light weight, strong compatibility, no need of pre-drilling, high construction efficiency and the like as the most environment-friendly pin shaft type connecting piece since ancient times, and compared with a pin type fastening piece made of metal, the wooden nail can not form a cold and hot bridge and leave no corrosion trace in wood.

However, the conventional wooden nails are mainly made of hardwood or bamboo, and the nailing modes of the conventional wooden nails are vertical nailing, which often causes irreversible bending deformation in the humid environment, and is difficult to meet the requirements of large-size component connection and complex structure design of heavy wooden buildings.

At present, the connection of the wooden nails as the connecting pieces applied to the CLT is not reported, and the application of the CLT only jointed by the wooden nails to heavy-duty wooden building large-size components is not reported. The research result of the invention can provide powerful scientific support for the realization of the technology. With the increasing importance of the world countries on the environment, the wooden nail has wide application prospect under the background of green low carbon, healthy life and ecological civilization construction, and can be realized early to assist the goals of green manufacturing, carbon reduction and carbon reduction 3060 in China.

Disclosure of Invention

The invention aims to solve the technical problem that the invention provides the orthogonal laminated wood for the wood nail joint, which has higher bearing capacity, higher rigidity and good ductility.

Meanwhile, the invention provides a preparation method of the orthogonal laminated wood jointed by the wooden nails, and the orthogonal laminated wood which only uses the wooden nails as connecting pieces and is prepared by the method can be applied to large-size components of heavy wooden buildings.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a wood nailed orthogonal laminated wood comprises an orthogonal laminated wood, wherein each layer of the orthogonal laminated wood is formed by assembling a plurality of laminated plates; the intersecting part of two adjacent plywood of upper and lower mutually perpendicular is a superimposed unit, and the peg setting of staggering, and the point of entry is located superimposed unit central line, and same nail of entering the horizontally is a nail layer, and the peg on adjacent nail layer staggers each other in vertical direction, and the angle of entry of the peg on adjacent nail layer is opposite, namely, the angle of entry of the peg on a nail layer is 45~60, and the angle of entry of the peg on nail layer adjacent thereto is then 120~ 135.

Preferably, the nailing angle of the wood nails of one nail layer is 60 degrees, and the nailing angle of the wood nails of the adjacent nail layer is 120 degrees.

Preferably, the orthogonal laminated wood is formed by assembling three or more than three odd number layers of orthogonal components, and two adjacent layers are a parallel layer and a vertical layer.

Preferably, the parallel layers are odd numbered layers and the vertical layers are even numbered layers.

Preferably, the laminate is produced by chordal sawing from a needle blade, the laminate having a minimum width of 50mm and a minimum thickness of 12 mm.

Preferably, the needle-leaved wood comprises fir, poplar, or pine, among others.

Preferably, the coniferous trees comprise single tree species or mixed tree species, the laminated boards used in the same layer are the same tree species in principle, and when different tree species are mixed, the tree species with similar material properties are selected; the material properties comprise basic physical and mechanical properties such as air-dried density, water content, dry shrinkage, compressive strength, bending strength, shearing strength and the like.

The species of trees with similar wood properties need to evaluate the producing area of the same species of wood, the difference of different species of wood, whether to modify, the degree of modification and the like.

Preferably, the wooden nails are densified wooden nails made of hardwood; the wooden nail is a round nail with one end being a cone and the other end being a capless head; the diameter range of the wooden nail is 2.5 mm-6.5 mm, and the length range is 35 mm-90 mm.

Preferably, the hardwood includes beech, oak, or teak, among others.

Preferably, the thickness of the nail layer is not less than 2 times the width of the laminate.

A method of making a tack-joined orthogonal laminated wood, comprising the steps of:

s01, setting the sizes of the laminated board and the wooden nail, the thickness of the nail layer, the assembly mode of the laminated board and the air pressure of the pneumatic nail gun according to the size specification of the orthogonal laminated wood to be prepared;

s02, preparing a laminate, after drying, flatly pressing and planing four symmetrical surfaces of the laminate along the length direction, and vertically sawing two ends of the laminate, wherein the sizes of all laminates are required to be the same;

s03, debugging the pneumatic nail gun, requiring the pneumatic nail gun to drive the wooden nail into the nail layer by air pressure, and ensuring that the wooden nail does not protrude on the top layer plate of the nail layer and the layer plates around the wooden nail do not crack;

s04, assembling the laminated plate, lengthening the laminated plate to a required length on a horizontal workbench, repeating the lengthening step to splice the laminated plate to be wide, arranging another group of long laminated plates and an adjacent group in a staggered manner to be a required width, requiring that a staggered interface is parallel to the central cross section of the laminated plate, and finally transversely pressing the laminated plate by using a hydraulic device;

s05, assembling layers, wherein the parallel layers are required to be odd layers, the vertical layers are required to be even layers, and the total layers are required to be odd layers, and the laminates required by the first nail layer are sequentially laid in an aligned mode from bottom to top, so that the laminates are transversely pressed and the upper and lower laminates are tightly attached to each other;

s06, interlayer bonding, namely, using a pneumatic nail gun to drive the wood nails into the center line of each overlapping unit in a staggered manner, wherein the driving angle is 45-60 degrees, the upper, lower, left and right overlapping units of the driven overlapping unit are required to be free of nails, repeating the steps S04 and S05 to enable the thickness of the laminated plate to reach the depth of a second nail layer, using the pneumatic nail gun to drive the wood nails into the center line of each overlapping unit in a staggered manner, the driving angle is opposite to that of a first nail layer, namely 120-135 degrees, and the adjacent two nail layers are required to have the wood nails in the overlapping unit of only one nail layer in the vertical direction;

s07, repeating S04-S06 until the orthogonal glued wood with the required size is prepared.

The application of a wood-nailed orthogonal laminated wood in heavy-duty wood construction large-size components.

Heavy wooden buildings include leisure clubs, schools, gymnasiums, libraries, exhibition halls, meeting halls, restaurants, churches, railway stations, walkway porches, bridges, outdoor landscape facilities, houses and the like; the large-size members comprise walls, floors, beams and columns and the like.

The invention has the following beneficial effects:

the invention researches the influence of the driving angle on the shearing performance of the wooden nail, and tests show that when the wooden nail is obliquely driven into a test piece, the bearing capacity, the rigidity and the ductility of the test piece subjected to shear-Compressive (CS) composite stress have no obvious contrast, so that the influence of the angle on the shearing performance of the test piece in the state can be determined to be not obvious; when the test piece is subjected to shear-pull (TS: Tensile shear) composite stress, the bearing capacity and rigidity of the test piece are both improved remarkably, wherein the bearing capacity of TS45 degrees is 2.45 kN at most, and the bearing capacity of TS60 degrees is 2.33 kN second, compared with the two, the bearing capacity of TS45 degrees is only 0.12 kN higher than that of TS60 degrees, but TS60 degrees is 9.70 percent and 7.51 percent higher than that of TS45 degrees in rigidity and ductility respectively. In the overall evaluation, under the two combined stress states of shear-compression and shear-tension, 60 degrees is the optimal nail penetration angle, and the high bearing capacity, high rigidity and good ductility are realized.

The wood fibers on two sides of the interface of the wood nail and the base material are obviously extruded and damaged, and the base material becomes dark along the nailing path of the wood nail. After the wooden nail is pulled out, wood fiber is adhered to the surface of the nail-in part and is not easy to fall off. According to the research, the wood nails are nailed into the wood under high pressure by using an air gun, due to high-speed friction on the surface of the material, the generated heat can ensure that lignin and hemicellulose on the contact surface of the wood nails and the wood are heated, softened and fused, the glue-free gluing of the wood nails and the wood can be realized after cooling and solidification, and the glued wood nails can not generate irreversible bending deformation when exposed to a humid environment, so that the requirements of large-size component connection and complex structure design of a heavy wood building are completely met.

The invention does not need to use any adhesive as a gluing medium, can effectively reduce the release of harmful gases such as formaldehyde and the like, lightens the environmental burden, has high processing efficiency, and is convenient for post treatment and recycling when being nailed into a component.

Drawings

FIG. 1 is a rust map of a prior art wooden structure building using metal connectors;

FIG. 2 is a schematic view of the formation of a thermal bridge for a metal connector according to the prior art;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of a laminate assembly of the present invention;

FIG. 5 is a schematic view of an interlayer assembly of the present invention;

FIG. 6 is a schematic view of the present invention showing the staggered arrangement of the wooden nails;

FIG. 7 is a view of the invention in the form of an orthogonal assembly of plies;

FIG. 8 is a diagram of the final effect of the embodiment (three layers) of the present invention;

FIG. 9 is a test piece loading plan view of the present invention with a tack driven at different angles;

FIG. 10 is a nail groove image of various test pieces of different nailing angles according to the present invention;

FIG. 11 is a schematic view of the limit load of each set of test pieces with different nailing angles according to the present invention;

FIG. 12 is a schematic view of the stiffness of various test pieces of the present invention at different nail penetration angles;

FIG. 13 is a schematic drawing of ductility coefficients of test pieces of different nail penetration angles according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Example 1

As shown in fig. 3, the orthogonal laminated wood for wood nail jointing is formed by assembling three or more than three odd layers of orthogonal assemblies, two adjacent layers are a parallel layer 1 and a vertical layer 2, each layer is formed by arranging and assembling a plurality of laminates 3 which are longitudinally lengthened and then arranged along a transverse staggered interface 4, the intersecting part of two vertically adjacent laminates 3 is an overlapping unit 5, wood nails 6 are staggered and arranged on the central line of each overlapping unit 5, the same horizontal nailing wood nail 6 is a nail layer 7, the wood nails 6 of the adjacent nail layers 7 are staggered 8 in the vertical direction, and the nailing angles 9 of the wood nails 6 of the adjacent nail layers 7 in the length direction of the orthogonal laminated wood are opposite.

The laminated plate 3 is prepared by sawing needle-leaved wood in a chord direction, such as fir, poplar and pine trees with constant speed, the laminated plate 3 has no obvious defects, the minimum width is 50mm, and the minimum thickness is 12 mm.

The wooden nails 6 are made of broadleaf wood after densification treatment, such as beech, oak, teak and the like, the wooden nails 6 are round nails with cones at one ends and capless heads at the other ends, the diameter range of the wooden nails is 2.5 mm-6.5 mm, and the length range of the wooden nails is 35 mm-90 mm.

The parallel layer 1 and the vertical layer 2 are formed by assembling a plurality of laminates 3 which are longitudinally lengthened and then transversely staggered, the staggered interface 4 is parallel to the central cross section of each laminate 3, the laminates 3 used in the same layer have the same size, and the parallel layer 1 and the vertical layer 2 are assembled in an orthogonal mode.

The overlapping units 5 are the intersecting parts of two adjacent laminates 3, the wooden nails 6 are arranged in the center of each overlapping unit 5 in a staggered mode, and each embedded wooden nail 6 is at least intersected with 1 overlapping unit 5.

Nail layer 7 constitute by same nail income horizontally wooden nail 6, just quadrature glued wood contains two nail layers 7 at least, requires that two wooden nails 6 of nail layer 7 stagger the setting from top to bottom, guarantees that the wooden nail 6 of adjacent nail layer 7 is on quadrature glued wood length direction's nailing angle 9 is opposite, nailing angle 9 is 60, and the thickness of nail layer 7 is not less than 2 times of plywood 3 width.

s01, making the embodiment according to the dimension specification of the orthogonal glued wood to be prepared, including the dimension of the material (the laminate 3 and the wooden nail 6), the thickness of the nail layer 7, the assembly mode of the laminate 3, the air pressure of the air nail gun and the like;

s02, preparing the laminate, wherein after drying treatment, the laminate 3 is required to be flatly pressed and planed along four symmetrical planes in the length direction, two ends of the laminate are vertically sawed, and all the laminates 3 are required to be the same in size;

s03, debugging the pneumatic nail gun, requiring the air pressure of the nail gun to be just right for driving the wooden nails 6 into the nail layer 7, ensuring that the wooden nails 6 do not protrude on the top layer plate 3 of the nail layer 7 and the layer plate 3 around the wooden nails 6 does not crack;

s04, as shown in figure 4, assembling the laminated plate, lengthening the laminated plate 3 to a required length on a horizontal workbench, repeating the lengthening step to splice the laminated plate 3 to be wide, arranging another group of long laminated plates 3 and the adjacent group in a staggered manner to a required width, requiring that the staggered interface 4 is parallel to the central cross section of the laminated plate 3, and the joint and the side edge of the laminated plate 3 do not need to be glued or joggled, and finally transversely pressing the laminated plate 3 by using a hydraulic device;

s05, as shown in figures 5 and 7, the interlayer assembly requires that the parallel layer 1 is an odd layer, the vertical layer 2 is an even layer, and the total layer is an odd layer, the laminates 3 required by the first nail layer 7 are sequentially aligned and laid from bottom to top, the laminates 3 are transversely pressed, and the upper and lower laminates 3 are tightly attached;

s06, as shown in fig. 6, interlayer bonding, driving the wooden nail 6 into the center line of each overlapping unit 5 in a staggered manner by using a pneumatic nail gun, wherein the driving angle 9 is 60 °, the nailed overlapping unit 5 is required to have no nail in the four overlapping units 5, namely the upper overlapping unit 5, the lower overlapping unit 5, the left overlapping unit 5, the right overlapping unit 5, the steps S04 and S05 are repeated, the thickness of the laminate 3 reaches the depth of the second nail layer 7, the wooden nail 6 is driven into the center line of each overlapping unit in a staggered manner by using the pneumatic nail gun, the driving angle 9 is opposite to that of the first nail layer 7, namely 120 °, and the two adjacent nail layers 7 are required to have a nail in the overlapping unit 5 with only one nail layer 7 in the vertical direction;

s07, as shown in FIG. 8, repeating the steps S04-S06 until the orthogonal glue wood with the required size is prepared.

The invention further researches the influence of the driving angle on the shearing performance of the wooden nail, and as can be seen from table 1 and fig. 11-13, the experiment finds that when the wooden nail is obliquely driven into a test piece, the bearing capacity, the rigidity and the ductility of the test piece subjected to shear-Compressive (CS) composite stress do not have obvious contrast, and the influence of the angle on the shearing performance of the test piece in the state can be determined to be not obvious; when the test piece is subjected to shear-pull (TS: Tensile shear) composite stress, the bearing capacity and rigidity of the test piece are both remarkably improved, wherein the bearing capacity of TS45 degrees is 2.45 kN at most, and the bearing capacity of TS60 degrees is 2.33 kN second time, compared with the two, the bearing capacity of TS45 degrees is only 0.12 kN higher than that of TS60 degrees, but TS60 degrees is 9.70 percent and 7.51 percent higher than that of TS45 degrees in rigidity and ductility respectively. Overall evaluation shows that under two composite stress states of shear-compression and shear-tension, 60 degrees is the optimal nail-in angle, and the composite stress nail has higher bearing capacity, higher rigidity and good ductility.

TABLE 1 Effect of different driving angles on shear behavior

The wood nails and nail grooves after the test pieces with different nailing angles are loaded and damaged are shown in figures 9-10, and the wood fibers on two sides of the interface of the wood nails and the base material are obviously extruded and damaged, and the base material color becomes dark along the nailing path of the wood nails. After the wooden nail is pulled out, wood fibers are adhered to the surface of the nail-in part, and the wooden nail is not easy to fall off. Researches show that the wood nail is nailed into the wood under high pressure by using an air gun, the lignin and the hemicellulose on the contact surface of the wood nail and the wood can be softened and fused by the generated heat due to the high-speed friction on the surface of the material, and the glue-free gluing of the wood nail and the wood can be realized after the wood nail and the wood are cooled and solidified. And the glued wooden nail can not be irreversibly bent and deformed when being exposed to a humid environment, and the requirements of large-size component connection and complex structure design of the heavy wooden building are completely met.

Example 2

This example differs from example 1 only in that: the driving angle 9 of the wooden nail 6 of one nail layer 7 is 45 degrees, and the driving angle 9 of the wooden nail 6 of the adjacent nail layer 7 is 135 degrees.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A method for preparing orthogonal glued wood for wood nail joint is characterized in that: comprises orthogonal laminated wood, wherein each layer of the orthogonal laminated wood is formed by assembling a plurality of laminated plates (3); the laminated board (3) intersecting part of two vertically adjacent laminated boards (3) is an overlapping unit (5), the wooden nails (6) are arranged in a staggered mode, the nailing points are located on the central line of the overlapping unit (5), the wooden nails (6) which are horizontally nailed into the laminated boards are one nail layer (7), the wooden nails (6) of the adjacent nail layers (7) are staggered in the vertical direction, and the nailing angles (9) of the wooden nails (6) of the adjacent nail layers (7) are opposite, namely the nailing angle (9) of the wooden nail (6) of one nail layer (7) is 45-60 degrees, and the nailing angle (9) of the wooden nail (6) of the adjacent nail layer (7) is 120-135 degrees;

the method comprises the following steps:

s01, setting the sizes of the laminated board (3) and the wooden nail (6), the thickness of the nail layer (7), the assembly mode of the laminated board (3) and the air pressure of a pneumatic nail gun according to the size specification of the orthogonal glued wood to be prepared;

s02, preparing the laminated board (3), after drying treatment, flatly pressing and planing four symmetrical surfaces of the laminated board (3) along the length direction, and vertically sawing two ends, wherein the sizes of all the laminated boards (3) are required to be the same;

s03, debugging the pneumatic nail gun, requiring the pneumatic nail gun to just drive the wooden nail (6) into the nail layer (7) by air pressure, and ensuring that the wooden nail (6) does not protrude on the top layer plate (3) of the nail layer (7) and the layer plate (3) around the wooden nail (6) does not crack;

s04, assembling the laminated plate, namely, on a horizontal workbench, lengthening the laminated plate (3) to a required length, repeating the lengthening step to splice the laminated plate (3) to be wide, staggering another group of long laminated plates (3) and an adjacent group to a required width, requiring the staggered interface (4) to be parallel to the central cross section of the laminated plate (3), and finally transversely pressing the laminated plate (3) by using a hydraulic device;

s05, assembling the layers, wherein the number of layers where the parallel layers (1) are located is an odd number, the number of layers where the vertical layers (2) are located is an even number, and the total number of layers is an odd number, sequentially aligning and laying the laminates (3) required by the first nail layer (7) from bottom to top, and keeping the laminates (3) transversely pressed and tightly attached to the upper laminates and the lower laminates;

s06, interlayer bonding, namely, using a pneumatic nail gun to drive the wood nails (6) into the center line of each overlapping unit (5) in a staggered mode, wherein the driving angle (9) is 45-60 degrees, the upper, lower, left, right and four overlapping units (5) of the driven overlapping units (5) are required to be free of nails, repeating S04 and S05 to enable the thickness of the laminated plate (3) to reach the depth of a second nail layer (7), using the pneumatic nail gun to drive the wood nails (6) into the center line of each overlapping unit (5) in a staggered mode, the driving angle (9) is opposite to that of the first nail layer (7), namely 120-135 degrees, and the wood nails (6) are required to be arranged in the overlapping units (5) of which two adjacent nail layers (7) only have one nail layer (7) in the vertical direction;

2. The method of making a tack-joined orthogonal laminated wood according to claim 1, wherein: the nailing angle (9) of the wood nails (6) of one nail layer (7) is 60 degrees, and the nailing angle (9) of the wood nails (6) of the adjacent nail layer (7) is 120 degrees.

3. The method of making a tack-joined orthogonal laminated wood according to claim 1, wherein: the orthogonal laminated wood is formed by orthogonal assembly of three or more odd layers, and the two adjacent layers are a parallel layer (1) and a vertical layer (2).

4. The method of making a tack-joined orthogonal laminated wood according to claim 1, wherein: the laminate (3) is produced by sawing from a needle blade material in a chord-wise manner, the laminate (3) having a minimum width of 50mm and a minimum thickness of 12 mm.

5. The method of making a tack-joined orthogonal laminated wood according to claim 4, wherein: the coniferous trees comprise single tree species or mixed tree species, the laminated plates (3) used in the same layer are the same tree species, and when different tree species are used in a mixed manner, tree species with similar material properties are selected; the properties of the material include air-dried density, water content, dry shrinkage, compression strength, bending strength and shearing strength.

6. The method of making a tack-joined orthogonal laminated wood according to claim 1, wherein: the wooden nail (6) is a densified wooden nail made of broad-leaved wood; the wooden nail (6) is a round nail with one end being a cone and the other end being a capless head; the diameter range of the wooden nail (6) is 2.5 mm-6.5 mm, and the length range is 35 mm-90 mm.

7. The method of claim 6, wherein the method comprises: broad-leaved wood includes beech, oak or teak.

8. The method of making a tack-joined orthogonal laminated wood according to claim 1, wherein: the thickness of the nail layer (7) is not less than 2 times of the width of the laminate (3).