CN216949060U - Heavy prefabricated plate of structural composite wood or bamboo - Google Patents
Heavy prefabricated plate of structural composite wood or bamboo Download PDFInfo
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- CN216949060U CN216949060U CN202220456081.6U CN202220456081U CN216949060U CN 216949060 U CN216949060 U CN 216949060U CN 202220456081 U CN202220456081 U CN 202220456081U CN 216949060 U CN216949060 U CN 216949060U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Abstract
The utility model provides a heavy prefabricated plate of structural composite wood or bamboo, which comprises n layers of unit laminated plates, wherein n is an odd number, adjacent unit laminated plates are nailed by nails or are glued and pressed by adhesives, the unit laminated plates are made of recombined wood or recombined bamboo, and the main strength directions of the adjacent unit laminated plates are mutually vertical. The structural composite wood or bamboo heavy prefabricated plate adopts an orthogonal structure, has large breadth, easy assembly, stable structure and excellent performance, the unit laminated plate is made of recombined wood or recombined bamboo, the raw material is derived from small-diameter-grade wood or bamboo processing residues, the limitation on the raw material is less, the source range of the raw material is widened, and the utilization rate of bamboo resources is improved.
Description
Technical Field
The utility model relates to the technical field of building prefabricated materials and decorative materials, in particular to a heavy prefabricated plate of structural composite wood or bamboo.
Background
As global climate warms, reducing and controlling carbon emissions has become a common general consensus throughout the world. The building material processing and building field is a carbon emission large household, and the wood or bamboo structure building has the advantages of green low carbon, heat preservation, energy conservation, easy assembly, natural symbiosis and the like, so the wood or bamboo structure building is favored by consumers.
Cross-glued wood (CLT) prefabricated panels are typically prefabricated engineered wood products made from at least 3 layers of solid wood lumber assemblies glued together with a structural adhesive. The orthogonal laminated wood has the characteristics of high prefabricating degree, quickness and convenience in transportation and installation and small influence on site environment, and is considered to be an optimal substitute product for the traditional reinforced concrete building material. At present, orthogonal laminated wood (CLT) prefabricated panels are widely applied to wall panels, floor panels and roof panels of buildings, and can also be used as main structures of bridges and bridge panels. However, in the prior art, the main raw materials of the orthogonal laminated wood precast slab are sawn timber with the solid wood specification after being classified according to the appearance grade and/or the stress grade, and the sawn timber with the solid wood specification is derived from logs with larger diameter grade, the growth cycle of the logs with the large diameter grade is long, the harvesting and transportation cost is high, the utilization rate of raw materials is low, and the practical problem of supply shortage inevitably occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of how to design a novel wood or bamboo prefabricated plate, broaden the source of raw materials, improve the utilization rate of bamboo resources and improve the performance of the prefabricated plate.
In order to solve the technical problems, the utility model provides a heavy prefabricated plate of structural composite wood or bamboo, which comprises n layers of unit laminated plates which are arranged in a stacked mode, wherein n is an odd number, adjacent unit laminated plates are connected through gluing or nailing, the unit laminated plates are made of recombined wood or recombined bamboo, and the main strength directions of the adjacent unit laminated plates are mutually vertical.
Optionally, the unit laminate is selected from one or more of the following materials: oriented strand board OSB, oriented strand board finished wood OSL, longitudinal wood chip laminated wood PSL, laminated wood chip laminated wood LSL, veneer laminated wood LVL, veneer laminated board LVP, veneer laminated bamboo LVB, bamboo bundle laminated bamboo PSB and structural plywood.
Optionally, the thickness of the unit laminate is 15-30 mm.
Optionally, the number of layers n of the unit laminate is 3 or 5.
Optionally, the overall thickness of the structural composite wood or bamboo heavy prefabricated plate is 45-150 mm.
Optionally, the density of the unit laminate is 450kg/m3The above.
Optionally, when the adjacent unit laminates are bonded by using an adhesive, the adhesive is one-component polyurethane or two-component isocyanate.
Optionally, the glue application amount between the adjacent laminates is 120-250g/m2。
Compared with the prior art, the utility model has the following beneficial effects:
the structural composite wood or bamboo heavy prefabricated plate adopts an orthogonal structure, and has the advantages of large breadth, easy assembly, stable structure and excellent performance. The unit laminated plate is made of recombined wood or recombined bamboo, the raw material is derived from small-diameter-grade wood or bamboo processing residues, the limitation on the raw material is less, the source range of the raw material is widened, and the utilization rate of bamboo resources is improved. From the performance, this heavy prefabricated plate of structure composite wood or bamboo timber is owing to adopt reorganization timber or reorganization bamboo timber, and the unit size is more stable, and mechanical properties is more even, has fine designability simultaneously, and the main strength direction mutually perpendicular of adjacent unit plywood can improve the utilization ratio of raw and other materials greatly, promotes the anti rolling shear behavior and the bearing capacity of panel simultaneously, and this is that solid wood specification sawn timber is difficult to realize. Compared with orthogonal laminated wood (CLT) taking solid wood sawn timber as a unit, the heavy prefabricated plate of the structural composite wood or bamboo wood is high in raw material utilization rate, simple and convenient to pave, high in efficiency, capable of reducing lateral pressurization and reducing manufacturing difficulty, suitable for wallboards, floorboards and roof boards of various buildings, suitable for manufacturing door boards, table boards and decorative materials and good in market popularization prospect.
Drawings
FIG. 1 is a schematic structural view of a heavy prefabricated panel of structural composite lumber according to example 1 of the present invention;
FIG. 2 is a schematic structural view of a composite bamboo heavy precast slab of the structure of embodiment 2 of the present invention;
FIG. 3 is a schematic structural view of a heavy prefabricated panel of structural composite lumber according to example 3 of the present invention;
fig. 4 is a schematic structural view of the structural composite wood-bamboo heavy precast slab of embodiment 4 of the present invention.
Description of reference numerals:
1-a first unit laminate, 2-a second unit laminate, 3-a third unit laminate, 4-a fourth unit laminate, and 5-a fifth unit laminate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiments of the present invention provide a structural composite wood or bamboo heavy-duty precast slab, which includes n unit laminate sheets arranged in a stack, where n is generally an odd number, and preferably n-3 or n-5. The unit laminated plate is made of recombined wood or recombined bamboo, the raw material is derived from small-diameter-grade wood or bamboo processing residues, the limitation on the raw material is less, the source range of the raw material is widened, and the utilization rate of bamboo resources is improved. The recombined wood and the recombined bamboo have good designability, stable unit size, uniform mechanical property and controllable main strength direction. The main strength directions of adjacent unit laminated plates in the prefabricated plate are mutually vertical, so that the rolling shear resistance and the bearing capacity of the plate can be improved.
Further, the unit laminate is selected from the following materials: oriented Strand Board (OSB), oriented strand board lumber (OSL), longitudinal strand laminated lumber (PSL), laminated strand laminated lumber (LSL), veneer laminated lumber (LVL), veneer laminated board (LVP), laminated veneer Lumber (LVB), bamboo bundle laminated bamboo (PSB), structural plywood and the like.
The thickness of the unit laminated plate is 15-30mm, the integral thickness of the prefabricated plate is 45-150mm, and the density of the unit laminated plate is 450kg/m3As described above. The adjacent unit laminates are connected by adhesive or nailing. When the gluing connection is adopted, the adhesive is single-component Polyurethane (PUR) or double-component isocyanate (EPI), and the glue application amount between adjacent laminates is 120-2。
The production process of the structural composite wood or bamboo heavy precast slab comprises the following steps: sanding the surfaces of the unit laminated plates before paving to remove oxide layers on the surfaces of the unit laminated plates and improve the bonding strength and durability of the unit laminated plates; the adjacent unit laminates are nailed by nails or sprayed by adhesive, the adhesive application amount is 120-2The open time is 20 min; and (3) applying glue, and then performing cold pressing and pressing, wherein the positive pressure is 1.0-1.2MPa during cold pressing, and the cold pressing time is 45-60min, so that the precast slab product can be obtained.
The heavy prefabricated plate of the structural composite wood or bamboo adopts an orthogonal structure, has large breadth, easy assembly, stable structure and excellent performance, is suitable for wallboards, floorboards and roof boards of various buildings, and is also suitable for manufacturing door boards, table boards and decorative materials.
The following provides several specific embodiments of the structural composite wood or bamboo heavy prefabricated board.
Example 1
The present embodiment is a heavy prefabricated panel of structural composite lumber, which is shown in fig. 1 and includes three unit panels, i.e., a first unit panel 1, a second unit panel 2, and a third unit panel 3, which are stacked in layers. The material of each unit laminate is reconstituted wood, in particular, of the first unit laminate 1The material is wood oriented strand board OSB with the thickness of 17mm and the density of 650kg/m3The orientation of the shavings is parallel to the main strength direction of the board; the material of the second unit laminate 2 is wood oriented wood shaving lumber OSL with the thickness of 16mm and the density of 700kg/m3The lamination orientation is perpendicular to the main strength direction of the plate; the third unit laminate 3 was made of wood oriented strand board OSB having a thickness of 17mm and a density of 650kg/m3The strands are oriented parallel to the main strength direction of the board. The adjacent unit laminated plates are glued through an adhesive, the adhesive is single-component polyurethane PUR, and the main strength directions of the adjacent unit laminated plates are mutually vertical to form an orthogonal structure.
The production process of the composite wood heavy precast slab with the structure comprises the following steps: sanding the surfaces of the unit floor boards before paving to remove oxide layers on the surfaces of the unit floor boards; the adjacent unit laminates are sprayed with adhesive, the glue application amount is 150g/m2The open time is 20 min; and (3) applying glue, and then performing cold pressing and pressing, wherein the positive pressure during cold pressing is 1.0MPa, and the cold pressing time is 60min, so as to obtain the structural composite wood heavy precast slab with the thickness of 50 mm. The composite wood heavy prefabricated slab can be used for application occasions such as inner partition walls, door panels, table boards and the like of various buildings and used as a decorative material.
Example 2
This embodiment is a structural composite bamboo heavy prefabricated panel, which is shown in fig. 2 and includes three laminated unit panels, namely a first unit panel 1, a second unit panel 2 and a third unit panel 3. The material of each unit laminated plate is recombined bamboo wood, specifically, the material of the first unit laminated plate 1 is bamboo wood directional shaving wood OSL, the thickness is 35mm, and the density is 750kg/m3The lamination orientation is parallel to the main strength direction of the plate; the second unit layer plate 2 is made of bamboo oriented strand board OSB with the thickness of 35mm and the density of 700kg/m3The orientation of the shavings is perpendicular to the main strength direction of the board; the third unit laminated plate 3 is made of bamboo wood oriented wood shaving material OSL, the thickness is 35mm, and the density is 750kg/m3The shavings are oriented parallel to the main strength direction of the board. The adjacent unit laminated plates are glued through an adhesive, the adhesive is single-component polyurethane PUR, and the adjacent unit laminated platesAre perpendicular to each other, forming an orthogonal structure.
The production process of the composite bamboo heavy precast slab with the structure comprises the following steps: sanding the surfaces of the unit floor boards before paving to remove oxide layers on the surfaces of the unit floor boards; the adjacent unit laminates are sprayed with adhesive, the glue application amount is 180g/m2The opening time is 20 min; and (3) gluing, then performing cold pressing and pressing, wherein the positive pressure is 1.2MPa during cold pressing, and the cold pressing time is 45min, so as to obtain the structural composite bamboo heavy precast slab with the thickness of 105 mm. The composite bamboo heavy prefabricated plate with the structure can be used for application occasions such as wallboards, floor slabs, roof slabs and the like of various buildings.
Example 3
The present embodiment is a heavy prefabricated panel of a structural composite lumber, which is shown in fig. 3 and includes five unit laminates, i.e., a first unit laminate 1, a second unit laminate 2, a third unit laminate 3, a fourth unit laminate 4 and a fifth unit laminate 5, which are stacked. The material of each unit laminate is recombined wood, specifically, the first unit laminate 1, the third unit laminate 3 and the fifth unit laminate 5 are wood oriented strand board OSB with the thickness of 17mm and the density of 650kg/m3The orientation of the shavings is parallel to the main strength direction of the board; the material of the second unit laminate 2 and the fourth unit laminate 4 is wood oriented shaving lumber OSL with the thickness of 27mm and the density of 700kg/m3The lamination orientation is perpendicular to the main strength direction of the sheet. The adjacent unit laminated plates are glued through an adhesive, the adhesive is single-component polyurethane PUR, and the main strength directions of the adjacent unit laminated plates are mutually vertical to form an orthogonal structure.
The production process of the composite wood heavy precast slab with the structure comprises the following steps: sanding the surfaces of the unit floor boards before paving to remove oxide layers on the surfaces of the unit floor boards; the adjacent unit laminates are sprayed with adhesive, the glue application amount is 180g/m2The open time is 20 min; and (3) applying glue, and then performing cold pressing and pressing, wherein the positive pressure during cold pressing is 1.1MPa, and the cold pressing time is 50min, so as to obtain the structural composite wood heavy precast slab with the thickness of 105 mm. The composite wood heavy prefabricated slab with the structure can be used for application occasions such as wallboards, floor slabs, roof slabs and the like of various buildings.
Example 4
The present embodiment is a structural composite wood-bamboo heavy-duty precast slab, which is shown in fig. 4 and includes three unit laminates, namely a first unit laminate 1, a second unit laminate 2 and a third unit laminate 3, which are stacked in layers. The material of each unit laminate is recombined wood or recombined bamboo, specifically, the material of the first unit laminate 1 is wood veneer laminated lumber LVL with the thickness of 27mm and the density of 500kg/m3The surface texture direction is parallel to the main strength direction of the plate; the second unit laminate 2 is made of bamboo structural plywood with the thickness of 26mm and the density of 450kg/m3The surface texture direction is vertical to the main strength direction of the plate; the laminated wood veneer lumber LVL of the third unit laminate 3 has a thickness of 27mm and a density of 500kg/m3The surface grain direction is parallel to the main strength direction of the plate. The adjacent unit laminated plates are glued through an adhesive, the adhesive is bi-component isocyanate EPI, and the main strength directions of the adjacent unit laminated plates are mutually vertical to form an orthogonal structure.
The production process of the composite wood heavy precast slab with the structure comprises the following steps: sanding the surfaces of the unit floor boards before paving to remove oxide layers on the surfaces of the unit floor boards; the adjacent unit laminates are sprayed with adhesive, the glue application amount is 120g/m2The open time is 20 min; and (3) applying glue, and then performing cold pressing and pressing, wherein the positive pressure during cold pressing is 1.0MPa, and the cold pressing time is 60min, so as to obtain the structural composite wood-bamboo heavy precast slab with the thickness of 80 mm. The composite wood-bamboo heavy prefabricated plate with the structure can be used for application occasions such as wallboards, floor slabs, roof slabs and the like of various buildings.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The heavy prefabricated slab is characterized by comprising n layers of unit laminated plates which are stacked, wherein n is an odd number, adjacent unit laminated plates are connected through gluing or nailing, the unit laminated plates are made of recombined wood or recombined bamboo, and the main strength directions of the adjacent unit laminated plates are mutually vertical.
2. The structural composite wood or bamboo heavy duty precast panel according to claim 1, wherein the unit laminate is selected from one or more of the following materials: oriented strand board OSB, oriented strand board finished wood OSL, longitudinal laminated wood chip lumber PSL, laminated wood chip laminated wood LSL, veneer laminated wood LVL, veneer laminated board LVP, plywood glued bamboo LVB, bamboo bundle glued bamboo PSB and structural glued board.
3. The structural composite wood or bamboo heavy precast panel according to claim 1 or 2, wherein the thickness of the unit panels is 15-30 mm.
4. The structural composite wood or bamboo heavy precast slab according to claim 3, wherein the number of layers n-3 or n-5 of the unit laminate.
5. The structural composite wood or bamboo heavy duty precast panel according to claim 4, wherein the overall thickness of the structural composite wood or bamboo heavy duty precast panel is 45-150 mm.
6. The structural composite wood or bamboo heavy precast panel according to claim 1 or 2, wherein the density of the unit laminate is 450kg/m3The above.
7. The structural composite wood or bamboo heavy-duty precast panel according to claim 1 or 2, wherein when adjacent unit panels are bonded by an adhesive, the adhesive is one-component polyurethane or two-component isocyanate.
8. The structural composite wood or bamboo heavy precast slab as recited in claim 7, wherein the glue application amount between the adjacent laminate plates is 120-250g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220456081.6U CN216949060U (en) | 2022-03-01 | 2022-03-01 | Heavy prefabricated plate of structural composite wood or bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220456081.6U CN216949060U (en) | 2022-03-01 | 2022-03-01 | Heavy prefabricated plate of structural composite wood or bamboo |
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| CN216949060U true CN216949060U (en) | 2022-07-12 |
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| CN202220456081.6U Active CN216949060U (en) | 2022-03-01 | 2022-03-01 | Heavy prefabricated plate of structural composite wood or bamboo |
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