CN109877919B - Whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam and processing technology - Google Patents
Whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam and processing technology Download PDFInfo
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Abstract
The whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam comprises two side vertical plates, an upper panel, a lower panel, two end supporting wood base plates and supporting wood blocks, wherein the two ends of each side vertical plate are respectively provided with one supporting wood base plate, and a row of supporting wood blocks are arranged in the middle of each side vertical plate to form a ladder-shaped structural member; the upper and lower panels are respectively arranged on the upper and lower surfaces formed by two side vertical plates, two supporting wood backing plates and corresponding supporting wood blocks to form a box-shaped structure, the whole bamboo crack-free unfolding bamboo flat plate is unfolded by moso bamboo, and the width of the whole bamboo crack-free unfolding bamboo flat plate is as follows: 250-400 mm, length: 1500-2600mm, the thickness is respectively: 7-10mm. The upper and lower panels and the two side panels of the rectangular beam are formed by gluing three or five layers of whole bamboo crack-free unfolding bamboo plates to form an external structure, and the inside of the rectangular beam is provided with the supporting wood blocks.
Description
Technical Field
The application relates to the field of integral bamboo crack-free unfolding bamboo flat plate matched building structures, in particular to an integral bamboo crack-free unfolding bamboo flat plate composite rectangular beam and a processing technology.
Background
China is the world country mainly producing bamboo, and the area of the bamboo forest is about 400 ten thousand hm 2 Accounting for more than 90 percent of the world moso bamboo yield. The area of the bamboo forest in China is about 0.5 percent of the area of the national land and about 2.9 percent of the area of the forest in China, and five hundred million of moso bamboos can be cut each year, which is equivalent to 1000 ten thousand meters 3 The wood is prepared from the above materials. The bamboo forest resources in China are mainly distributed in 14 provinces, cities and hilly mountainous areas of yellow river and south of Yangtze river. As long as scientific management is carried out, the resources are inexhaustible important biological resources.
Moso bamboo is an important forest resource which is fast-growing, high-yield, high-quality and easy to update and recover. It has short growth period and excellent physical and mechanical performance. However, compared with wood, the bamboo wood has the characteristics of small diameter, thin and hollow wall and large sharpness, and brings a plurality of problems and difficulties for processing and utilizing the bamboo wood. The main problems and difficulties are as follows:
1. most wood processing equipment and techniques cannot be directly applied in bamboo processing, and thus the technical level of the bamboo processing industry is far behind that of the wood processing industry.
2. Because of the special structure of bamboo, most products processed by bamboo can only realize mechanized production, individual working procedures or products are difficult to get rid of manual labor, and continuous and automatic production is more difficult, so the labor production efficiency of the bamboo processing industry is low.
3. The adhesive can not be wetted, the difference of the middle layer bamboo material is large, and the truly available material in the bamboo processing is the middle part, so the utilization rate of the bamboo is low, and the utilization rate is mostly between 20% and 50% according to different products.
4. Bamboo is difficult to be processed into large-size plates or square timber like wood for utilization through simple processing; the bamboo can be processed into bamboo chips with the width of 20-30mm and the thickness of 5-8mm only by sawing, cutting or planing, and the bamboo chips are difficult to directly use.
For the four reasons, products made by simple sawing, slitting or planing are difficult to succeed in replacing wood and outweigh wood in a wide range of fields, both in terms of performance and economy, so that the main way to select and find the utilization of the bamboo industry is the main focus and break-through for developing the bamboo processing industry.
In recent years, people turn the eyes to realize crack-free expansion of whole bamboo, if the bamboo can be expanded into a crack-free bamboo flat plate, the crack-free expansion bamboo flat plate exceeding high-quality wood can be obtained, the rectangular beam is a beam with a rectangular cross section, the beam in building engineering is usually a rectangular beam, the application is extremely wide, and if the crack-free expansion bamboo flat plate is used in the design of the rectangular beam, the various performances of the rectangular beam can be greatly improved.
Disclosure of Invention
In order to solve the problems, the application provides a whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam and a processing technology, wherein an upper panel, a lower panel and two side panels of the rectangular beam are formed by gluing three or five whole bamboo crack-free unfolding bamboo flat plates into an external structure, and support wood blocks are arranged in the rectangular beam, and the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam has the characteristics of good rigidity, high strength, low overall price, convenient material recovery and the like; the upper and lower panels are respectively arranged on the upper and lower surfaces formed by two side vertical plates, two supporting wood backing plates and corresponding supporting wood blocks to form a box-shaped structure, the whole bamboo crack-free unfolding bamboo flat plate is unfolded by moso bamboo, and the width of the whole bamboo crack-free unfolding bamboo flat plate is as follows: 250-400 mm, length: 1500-2600mm, the thickness is respectively: 7-10mm.
According to the further improvement of the rectangular beam, for the composite rectangular beam with the length of 1500-2600mm, the length of the bamboo tube before the whole bamboo crack-free unfolding bamboo plate is cut according to the specification length of the composite rectangular beam, so that the length of the whole bamboo crack-free unfolding bamboo plate is just equal to the length of the composite rectangular beam, the widths of the vertical plates on two sides of the composite rectangular beam are respectively processed according to the specifications of 108mm, 152mm, 160mm, 210mm and 250mm, the widths of the upper panel and the lower panel are respectively processed according to the specifications of 100mm, 120mm, 150mm, 200mm and 250mm, the thicknesses of the upper panel and the lower panel are respectively processed according to the specifications of 7mm, 8mm, 9mm and 10mm, and the actual production process can be directly cut and processed according to the required thickness when the length of the composite rectangular beam is 1500-2600 mm.
According to the further improvement of the rectangular beam, when the two side vertical plates and the upper and lower panels are formed by compositing three whole bamboo crack-free unfolding bamboo plates, the two side vertical plates comprise two side bamboo plates I and two side bamboo plates II, the upper and lower panels comprise two side bamboo plates I and two side bamboo plates II, the two side bamboo plates I and the two side bamboo plates I are arranged on an inner layer and an outer layer, the two side bamboo plates II and the two side bamboo plates II are intermediate layers, when the two side vertical plates and the upper and lower panels are formed by compositing five whole bamboo crack-free unfolding bamboo plates, the two side vertical plates comprise two side bamboo plates I and two side bamboo plates II, the upper and lower panels comprise two side bamboo plates I and two side bamboo plates II, the two side bamboo plates I and the two side bamboo plates I are arranged on 1, 3 and 5 layers, the two side bamboo plates II and the two upper and lower bamboo plates II are 2 and 4 layers, and when the two side vertical plates and the upper and lower panels are formed by compositing three whole bamboo crack-free unfolding bamboo plates, the two crack-free unfolding bamboo plates can be formed by compositing five whole bamboo crack-free unfolding plates.
According to the further improvement of the rectangular beam, when the length of the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam exceeds 2600mm, finger joints are needed for the two side bamboo flat plates I, the two side bamboo flat plates II, the upper and lower bamboo flat plates I and the upper and lower bamboo flat plates II, and finger joints are needed for the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam when the length of the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam exceeds 2600mm due to the limited bamboo length.
According to the rectangular beam, before assembly and pressurizing gluing, the two sides of the bamboo flat plate II and the upper and lower bamboo flat plates II in the ladder-shaped structural member are glued; the contact surfaces of the two support wood backing plates and the corresponding support wood blocks with the vertical plates at two sides are glued, and the ladder-shaped structural member and the upper and lower panels are generally fixed in a gluing mode before assembly and pressurization gluing.
According to the application, the finger joint positions of the two side bamboo flat plates I and the two side bamboo flat plates II, the upper and lower bamboo flat plates I and the upper and lower bamboo flat plates II are staggered; if the length of the composite rectangular beam is 4000-5000mm, the two side bamboo plates I and the upper and lower bamboo plates I are formed by finger joint of two whole bamboo crack-free unfolding bamboo plates with equal length, and the two side bamboo plates II and the upper and lower bamboo plates II are formed by finger joint of three whole bamboo crack-free unfolding bamboo plates with equal length; if the length of the composite rectangular beam is within the range of 2600-4000mm, the two side bamboo plates I, the two side bamboo plates II, the upper and lower bamboo plates I and the upper and lower bamboo plates II are formed by finger joint of a whole bamboo crack-free unfolding bamboo plate with the length of 2600mm plus the length of L1, wherein L1 is the length of the composite rectangular beam minus 2600mm, and the finger joint length is added, so that finger joint can be performed in the above mode for ensuring the strength.
According to the further improvement of the rectangular beam, 4-9 supporting wood blocks are arranged between the vertical plates at two sides according to the different lengths of the composite rectangular beam; the thickness of the supporting wood blocks is 60mm, 4-9 supporting wood blocks are generally adopted in actual production, and the thickness of the supporting wood blocks is generally 60mm.
The application relates to a processing technology of a whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam, which comprises the following specific steps:
1) 3-5 layers of whole bamboo on the left side and the right side are subjected to crack-free expansion bamboo plates, two support wood backing plates and a row of support wood blocks to be glued and assembled, and the assembled back side is subjected to side pressure heat gluing to form a ladder-shaped structural member;
2) Manufacturing upper and lower panels, wherein the upper and lower panels are formed by gluing 3-5 layers of whole bamboo crack-free unfolding bamboo flat plates, assembling and then pressurizing and thermally gluing;
3) And gluing the upper and lower surfaces of the glued ladder-shaped structural member, assembling the glued ladder-shaped structural member with the upper and lower panels respectively, stacking and pressurizing in a roadway, and synthesizing cold glue to obtain the required bamboo crack-free unfolding bamboo flat plate composite rectangular beam.
The beneficial effects of the application are as follows:
1) The upper panel, the lower panel and the two side panels of the rectangular beam are formed by gluing a plurality of layers of whole bamboo crack-free unfolding bamboo flat plates to form an external structure, wherein a supporting wood block is arranged in the external structure, and the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam is formed through the design;
2) The upper panel, the lower panel and the two side panels are formed by expanding bamboo flat plates without cracks of whole bamboo, and wood is adopted as a supporting wood block in the upper panel, so that the purposes of replacing wood with bamboo and saving wood are achieved, the existing solid wood for packaging is replaced by structural materials such as laminated veneer lumber manufactured by using fast-growing artificial forest wood raw materials, the purpose of saving wood is achieved, and the requirements of development circular economy, energy conservation and emission reduction are met;
3) The application considers the practical length limitation of the whole bamboo crack-free unfolding bamboo plate, and when the length exceeds 2.5m, the whole bamboo crack-free unfolding bamboo plate can be prolonged in an original finger joint mode, and the strength can be ensured in the process of further prolonged;
4) The upper and lower panels and the two side panels are formed by pressing 3-5 whole bamboo crack-free unfolding bamboo flat plates, and can be selected according to the strength requirement.
5) The composite rectangular beam can be used for a frame structure of the box bottom of a large-scale electromechanical product packaging box and a structural beam in a house building.
Drawings
FIG. 1 is an end view schematic of a composite rectangular beam;
FIG. 2 is a plan view of a composite rectangular beam in the length direction;
FIG. 3 is a plan view of a ladder-shaped structure in the length direction;
FIG. 4 shows finger joint positions of the two side bamboo plates I and the upper and lower bamboo plates I when the length of the composite rectangular beam is in the range of 4000-5000 mm;
FIG. 5 shows finger joint positions of the two side bamboo plates II and the upper and lower bamboo plates II when the length of the composite rectangular beam is in the range of 4000-5000 mm;
FIG. 6 is a finger joint position of the two side bamboo panels I and the upper and lower bamboo panels I when the length of the composite rectangular beam is in the range of 2600-4000 mm;
FIG. 7 is a finger joint position of the two side bamboo panels II and the upper and lower bamboo panels II when the length of the composite rectangular beam is in the range of 2600-4000 mm;
fig. 8 is a schematic diagram of stacking and pressurizing the glued upper and lower surfaces of the ladder-shaped structural member and the upper and lower panels (2) respectively after gluing, and cold gluing and forming.
Description of the drawings:
1. two side vertical plates; 2. an upper panel and a lower panel; 3. two ends support the wood backing plate; 4. and supporting the wood block; 1-1, bamboo flat plates I at two sides; 1-2, bamboo plates II on two sides; 2-1, upper and lower bamboo flat plates I;2-2, upper and lower bamboo flat plate II.
Detailed Description
The application is described in further detail below with reference to the attached drawings and detailed description:
the application provides a whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam and a processing technology thereof.
As an embodiment of the application, the application provides a whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam shown in figures 1-3, which comprises two side vertical plates 1, an upper panel 2, a lower panel 2, two end supporting wood base plates 3 and supporting wood blocks 4, wherein two ends of each side vertical plate 1 are respectively provided with one supporting wood base plate 3, and a row of supporting wood blocks 4 are arranged in the middle of each side vertical plate to form a ladder-shaped structural member; the two upper and lower panels 2 are respectively arranged on the upper and lower surfaces formed by two side vertical plates 1, two supporting wood backing plates 3 and corresponding supporting wood blocks 4 to form a box-shaped structure, the whole bamboo crack-free unfolding bamboo flat plate is unfolded by moso bamboo, and the width of the whole bamboo crack-free unfolding bamboo flat plate is as follows: 250-400 mm, length: 1500-2600mm, the thickness is respectively: 7-10mm.
According to the application, for the composite rectangular beam with the length of 1500-2600mm, the length of a bamboo tube before the whole bamboo crack-free unfolding bamboo flat plate is cut according to the specification length of the composite rectangular beam, so that the length of the whole bamboo crack-free unfolding bamboo flat plate is just equal to the length of the composite rectangular beam, the widths of vertical plates 1 on two sides of the composite rectangular beam are respectively processed according to the specifications of 108mm, 152mm, 160mm, 210mm and 250mm, the widths of upper and lower panels 2 are respectively processed according to the specifications of 100mm, 120mm, 150mm, 200mm and 250mm, the thicknesses of the upper and lower panels are respectively processed according to the specifications of 7mm, 8mm, 9mm and 10mm, and the length of the composite rectangular beam can be directly cut in the actual production process and can be processed according to the required thickness, wherein the common cross-section size and the length of the rectangular beam and the size of related structural members are shown in the table below;
when the two side vertical plates 1 and the upper and lower panels 2 are formed by compositing three whole bamboo crack-free unfolding bamboo plates, the two side vertical plates 1 comprise two side bamboo plates I and two side bamboo plates II, the upper and lower panels 2 comprise an upper bamboo plate I and a lower bamboo plate II, the two side bamboo plates I and the upper and lower bamboo plates I are arranged on an inner layer and an outer layer, and the two side bamboo plates II and the upper and lower bamboo plates II are middle layers. When the two side vertical plates 1 and the upper and lower panels 2 are formed by compounding five whole bamboo crack-free unfolding bamboo plates, the two side vertical plates 1 comprise two side bamboo flat plates I and two side bamboo flat plates II, the upper and lower panels 2 comprise an upper and lower bamboo flat plate I and an upper and lower bamboo flat plate II, the two side bamboo flat plates I and the upper and lower bamboo flat plates I are arranged in 1, 3 and 5 layers, the two side bamboo flat plates II and the upper and lower bamboo flat plates II are 2 and 4 layers, and the two side vertical plates and the upper and lower panels can be formed by compounding three whole bamboo crack-free unfolding bamboo flat plates or by compounding five whole bamboo crack-free unfolding bamboo flat plates.
According to the application, when the length of the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam exceeds 2600mm, the two side bamboo flat plates I, the two side bamboo flat plates II, the upper and lower bamboo flat plates I and the upper and lower bamboo flat plates II are all required to be finger-jointed, and because the length of the bamboo is limited, when the length of the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam exceeds 2600mm, the finger-jointed is required.
Before assembly and pressurizing and gluing, the ladder-shaped structural member and the upper and lower panels are shown in fig. 8, and two sides of a bamboo flat plate II and an upper and lower bamboo flat plate II in the ladder-shaped structural member are glued; the contact surfaces of the two support wood backing plates and the corresponding support wood blocks and the vertical plates at two sides are glued, the ladder-shaped structural member and the upper and lower panels are generally fixed in a gluing mode before assembly and pressurization gluing, and the ladder-shaped structural member and the upper and lower panels are generally fixed in a gluing mode before assembly and pressurization gluing.
Finger joint positions of the two-side bamboo flat plates I and the two-side bamboo flat plates II, the upper bamboo flat plate I and the lower bamboo flat plate II are staggered as shown in figures 4-7; if the length of the composite rectangular beam is 4000-5000mm, the two side bamboo plates I and the upper and lower bamboo plates I are formed by finger joint of two whole bamboo crack-free unfolding bamboo plates with equal length, and the two side bamboo plates II and the upper and lower bamboo plates II are formed by finger joint of three whole bamboo crack-free unfolding bamboo plates with equal length; if the length of the composite rectangular beam is within the range of 2600-4000mm, the two side bamboo plates I, the two side bamboo plates II, the upper and lower bamboo plates I and the upper and lower bamboo plates II are formed by finger joint of a whole bamboo crack-free unfolding bamboo plate with the length of 2600mm plus the length of L1, wherein L1 is the length of the composite rectangular beam minus 2600mm, and the finger joint length is added, so that finger joint can be performed in the above mode for ensuring the strength.
According to the application, according to the different lengths of the composite rectangular beams, 4-9 supporting wood blocks 4 are arranged between the vertical plates 1 at two sides; the thickness of the supporting wood blocks 4 is 60mm, 4-9 supporting wood blocks are generally adopted in actual production, and the thickness of the supporting wood blocks is generally 60mm.
The application relates to a processing technology of a whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam, which comprises the following specific steps:
1) 3-5 layers of whole bamboo on the left side and the right side are subjected to crack-free expansion bamboo plates, two support wood backing plates and a row of support wood blocks to be glued and assembled, and the assembled back side is subjected to side pressure heat gluing to form a ladder-shaped structural member;
2) Manufacturing upper and lower panels, wherein the upper and lower panels are formed by gluing 3-5 layers of whole bamboo crack-free unfolding bamboo flat plates, assembling and then pressurizing and thermally gluing;
3) And gluing the upper and lower surfaces of the glued ladder-shaped structural member, assembling the glued ladder-shaped structural member with the upper and lower panels respectively, stacking and pressurizing in a roadway, and synthesizing cold glue to obtain the required bamboo crack-free unfolding bamboo flat plate composite rectangular beam.
The above description is only of the preferred embodiment of the present application, and is not intended to limit the present application in any other way, but is intended to cover any modifications or equivalent variations according to the technical spirit of the present application, which fall within the scope of the present application as defined by the appended claims.
Claims (1)
1. The processing technology of the whole bamboo crack-free unfolding bamboo flat plate composite rectangular beam comprises two side vertical plates (1), an upper panel (2), two end supporting wood base plates (3) and supporting wood blocks (4), wherein two ends of each side vertical plate (1) are respectively provided with one supporting wood base plate (3), and a row of supporting wood blocks (4) are arranged in the middle of each side vertical plate to form a ladder-shaped structural member; the two upper and lower panels (2) are respectively arranged on the upper and lower surfaces formed by two side vertical plates (1), two supporting wood backing plates (3) and corresponding supporting wood blocks (4), so as to form a box-shaped structure, the whole bamboo crack-free unfolding bamboo flat plate is unfolded by moso bamboo, and the width of the whole bamboo crack-free unfolding bamboo flat plate is as follows: 250-400 mm, length: 1500-2600mm, the thickness is respectively: 7-10mm;
for the composite rectangular beam with the length of 1500-2600 and mm, the length of the bamboo tube before the whole bamboo crack-free unfolding bamboo plate is cut according to the specification length of the composite rectangular beam, so that the length of the whole bamboo crack-free unfolding bamboo plate is just equal to the length of the composite rectangular beam, the widths of the vertical plates (1) on two sides of the composite rectangular beam are respectively processed according to the specifications of 108mm, 152mm, 160mm, 210mm and 250mm, the widths of the upper panel (2) and the lower panel (2) are respectively processed according to the specifications of 100mm, 120mm, 150mm, 200mm and 250mm, and the thicknesses of the upper panel and the lower panel are respectively processed according to the specifications of 7mm, 8mm, 9mm and 10mm;
when two side vertical plates (1) and an upper panel and a lower panel (2) are formed by compounding three whole bamboo crack-free unfolding bamboo flat plates, the two side vertical plates (1) comprise two side bamboo flat plates I (1-1) and two side bamboo flat plates II (1-2), the upper panel and the lower panel (2) comprise an upper bamboo flat plate I (2-1) and a lower bamboo flat plate II (2-2), the two side bamboo flat plates I (1-1) and the upper bamboo flat plate I (2-1) are arranged on an inner layer and an outer layer, and the two side bamboo flat plates II (1-2) and the upper bamboo flat plate II (2-2) are middle layers;
when two side vertical plates (1) and an upper panel and a lower panel (2) are formed by compounding five whole bamboo crack-free unfolding bamboo flat plates, the two side vertical plates (1) comprise two side bamboo flat plates I (1-1) and two side bamboo flat plates II (1-2), the upper panel and the lower panel (2) comprise an upper bamboo flat plate I (2-1) and an upper bamboo flat plate II (2-2), the two side bamboo flat plates I (1-1) and the upper bamboo flat plate I (2-1) are arranged in 1, 3 and 5 layers, and the two side bamboo flat plates II (1-2) and the upper bamboo flat plate II (2-2) are arranged in 2 and 4 layers;
when the length of the whole bamboo crack-free expanded bamboo flat plate composite rectangular beam exceeds 2600mm, the two side bamboo flat plates I (1-1), the two side bamboo flat plates II (1-2), the upper and lower bamboo flat plates I (2-1) and the upper and lower bamboo flat plates II (2-2) are all in finger joint;
before assembly and pressurizing gluing, the ladder-shaped structural member and the upper and lower panels (2) are glued on two sides of a bamboo flat plate II (1-2) and an upper and lower bamboo flat plate II (2-2) in the ladder-shaped structural member; the contact surfaces of the two supporting wood base plates (3) and the corresponding supporting wood blocks (4) and the vertical plates (1) at the two sides are coated with glue;
finger joint positions of the two-side bamboo flat plates I (1-1) and the two-side bamboo flat plates II (1-2), the upper and lower bamboo flat plates I (2-1) and the upper and lower bamboo flat plates II (2-2) are staggered; if the length of the composite rectangular beam is 4000-5000mm, the two side bamboo plates I (1-1) and the upper and lower bamboo plates I (2-1) are formed by finger joint of two whole bamboo crack-free unfolding bamboo plates with equal length, and the two side bamboo plates II (1-2) and the upper and lower bamboo plates II (2-2) are formed by finger joint of three whole bamboo crack-free unfolding bamboo plates with equal length; if the length of the composite rectangular beam is within the range of 2600-4000mm, the two side bamboo flat plates I (1-1), the two side bamboo flat plates II (1-2), the upper and lower bamboo flat plates I (2-1) and the upper and lower bamboo flat plates II (2-2) are formed by finger joint of a whole bamboo crack-free unfolding bamboo flat plate with the length of 2600mm and the length of L1, wherein L1 is the length of the composite rectangular beam minus 2600mm, and the finger joint length is added;
according to the different lengths of the composite rectangular beams, 4-9 supporting wood blocks (4) are arranged between the vertical plates (1) at two sides; the thickness of the supporting wood blocks (4) is 60mm, and the concrete steps are as follows;
1) 3-5 layers of whole bamboo on the left side and the right side are subjected to crack-free expansion bamboo plates, two supporting wood backing plates (3) and a row of supporting wood blocks (4) to be glued, and the assembled back side is subjected to side pressure heat gluing to form a ladder-shaped structural member;
2) Manufacturing an upper panel (2) and a lower panel (2), wherein the upper panel and the lower panel (2) are formed by gluing 3-5 layers of whole bamboo flat plates without crack expansion, assembling and then pressurizing and hot gluing;
3) And gluing the upper and lower surfaces of the glued ladder-shaped structural member, assembling the glued ladder-shaped structural member with the upper and lower panels (2) respectively, stacking and pressurizing in a roadway, and synthesizing cold glue to obtain the required bamboo crack-free unfolding bamboo flat plate composite rectangular beam.
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- 2019-03-28 CN CN201910243970.7A patent/CN109877919B/en active Active
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| CN102587575A (en) * | 2012-02-28 | 2012-07-18 | 湖南省林业科学院 | Bamboo layer laminated plate bamboo-imitated structure integrated light sectional material and preparation method thereof |
| CN203331157U (en) * | 2013-04-25 | 2013-12-11 | 安徽宏宇竹木制品有限公司 | Sandwich structure bamboo and wood composite recombinant structure material |
| CN108331252A (en) * | 2018-04-05 | 2018-07-27 | 南京林业大学 | A kind of compound box beam of self-heat conserving bamboo and wood |
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| CN109877919A (en) | 2019-06-14 |
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