Heavy bamboo and metal composite board

Abstract

The utility model discloses a heavy bamboo and metal composite board, and relates to the technical field of materials. Comprising a plurality of heavy bamboo plates and metal plates, the heavy bamboo plates are arranged side by side, one metal plate is arranged between every two adjacent heavy bamboo plates side by side, a connecting structure is arranged between the heavy bamboo plates and the metal plates, the heavy bamboo plates comprise at least two heavy bamboo plates, the metal plates are arranged between the two heavy bamboo plates, and the connecting structure comprises connecting pieces. The connecting pieces are arranged on the surfaces of the metal plates in a staggered mode, and the metal plates are connected with the heavy bamboo plates by penetrating the connecting pieces into the heavy bamboo plates. Heavy bamboo plates are used as main materials, metal plates are used as auxiliary rigid structures, the materials are low in price and easy to obtain, the structure is simple, manufacturing is convenient, integrity is good, a road surface assembly structure can be prefabricated, site filling and digging treatment and site assembly are synchronously carried out, full-bolt assembly connection is achieved, the construction period is remarkably shortened, and cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to material technical field especially relates to a heavy bamboo metal combined board. BACKGROUND

[0002] Concrete road construction is an important part of modern transportation infrastructure construction. In recent years, with the rapid development of China's economy, the scale of concrete road construction has been continuously expanding, and the technical level has been significantly improved, providing strong support for economic and social development. Although concrete road construction has the advantages of high strength and good durability, there are still some obvious drawbacks in the actual construction process. These drawbacks not only affect the construction efficiency and quality, but also may have negative impacts on the environment and society.

[0003] Concrete road construction requires multiple steps such as base treatment, formwork installation, concrete pouring, and maintenance, with a long construction period. The construction of a 5-kilometer-long concrete road takes up to 6 months, during which part of the road needs to be closed, causing serious traffic congestion and inconvenience to citizens. The noise and dust generated during construction also disturb the surrounding residents.

[0004] Concrete road construction requires a large amount of raw materials and special equipment, with high initial investment costs. The cost of concrete pavement per kilometer is about 1.5 times that of asphalt pavement. In addition, concrete road construction requires professional construction teams and technical personnel, and the labor cost is also relatively high. These factors make concrete road construction economically disadvantaged.

[0005] Once the concrete road is damaged, it is difficult to repair. Unlike asphalt pavement, which can be quickly restored by local repair, concrete pavement requires large-scale demolition and re-pouring, with a long repair period and high cost.

[0006] During the construction of concrete roads, a large amount of construction waste and dust pollution is generated. During construction, a large amount of construction waste is generated, and dust pollution can spread up to 1 kilometer away. In addition, the production of concrete emits a large amount of carbon dioxide, exacerbating the greenhouse effect. Noise pollution during construction also disturbs the surrounding residents.

[0007] Concrete road construction has high requirements for climate conditions, and low or high temperatures can affect the quality of concrete. In northern regions, winter construction requires insulation measures, increasing construction difficulty and cost. In southern regions, high summer temperatures can easily cause concrete cracking, affecting road quality. In addition, the flatness control of concrete pavement is difficult, and problems such as bumping are likely to occur. INVENTION CONTENTS

[0008] The utility model aims at providing a heavy bamboo metal combined board to solve the technical problems of long construction period and high cost of existing concrete road construction.

[0009] The heavy bamboo metal combined board comprises heavy bamboo boards and metal plates, the heavy bamboo boards are arranged in parallel, a metal plate is arranged between two adjacent heavy bamboo boards, and a connecting structure is arranged between the heavy bamboo boards and the metal plates,

[0010] The connecting structure comprises connecting pieces arranged on the surface of the metal plate and staggered, and the metal plate is connected with the heavy bamboo boards by penetrating the connecting pieces into the heavy bamboo boards.

[0011] The heavy bamboo is also called reorganized bamboo, which is a new bamboo material formed by reorganizing and strengthening bamboo, that is, bamboo is processed into long bamboo strips, bamboo silk or bamboo silk bundles, impregnated with glue after drying, dried to the required moisture content, then laid in a mold, and then formed into a profile by high temperature and high pressure hot curing. The heavy bamboo is pressed into a heavy bamboo board by a press.

[0012] The heavy bamboo board and the metal plate are used to replace the existing concrete material, the heavy bamboo board is used to replace the steel and cement in the traditional concrete material, the tensile strength and stability of the overall structure are enhanced, the metal plate provides rigidity for the overall combined board, the adjacent heavy bamboo boards and the metal plates are connected through the connecting structure, the connecting degree between the heavy bamboo boards and the metal plates is enhanced by the staggered connecting pieces, and the overall structure of the combined board is increased. The combined board can be used as a main pavement assembly structure and can bear the main load of the pavement, and can also be used as a building structure floor, a wall partition and the like. The combined board can be prefabricated, highly assembled, avoids the disadvantages of on-site pouring, has unified standardization and industrialization degree, ensures the uniformity of the flatness of the pavement and the wall in the later installation, simultaneously processes the on-site filling and digging, realizes full bolt assembly connection in on-site assembly, effectively avoids the emergence of structural problems caused by uneven welding quality, obviously shortens the construction period, and reduces the influence of construction on the surrounding environment.

[0013] The combined board comprises at least two heavy bamboo boards, one metal plate is arranged between the two heavy bamboo boards, and a sandwich structure of heavy bamboo board-metal plate-heavy bamboo board is formed. The connecting pieces are arranged on the metal plate in a staggered manner, and the heavy bamboo boards and the metal plate are connected together through the connecting pieces.

[0014] According to the pavement assembly needs, the combined board can be provided with different layers, such as the repeated setting mode of heavy bamboo board-metal plate-heavy bamboo board-metal plate-heavy bamboo board, and the two outer sides of the combined board are always heavy bamboo boards, the outer heavy bamboo boards protect the inner metal plate, the service life of the heavy bamboo board is obviously higher than that of cement, and the frequency of road repair can be effectively reduced.

[0015] Further, the connecting structure further comprises a glue layer, and the glue layer is arranged on one side of the heavy bamboo board close to the metal plate.

[0016] The connecting pieces are staggered and arranged, and the glue layer is arranged between the heavy bamboo board and the metal plate, so that the fitting degree between the heavy bamboo board and the metal plate can be significantly improved, and the overall structure of the combined board is further improved.

[0017] Further, the connecting pieces are arranged on the two side surfaces of the metal plate close to the heavy bamboo board, and cover the two side surfaces.

[0018] The connecting pieces are arranged on the two side surfaces of the metal plate close to the heavy bamboo board, and cover the two side surfaces.

[0019] Further, the thickness of the heavy bamboo board is 10-40mm, the density of the heavy bamboo board is 0.9-1.1g / cm3, and the compressive strength is 85-100MPa.

[0020] The combined board is used as a main pavement assembly structure, and needs to have corresponding deformation resistance, the heavy bamboo board meeting the above parameters can provide corresponding deformation resistance, and each composite layer in the combined board can effectively increase the durability and rigidity of the combined board.

[0021] Further, the arrangement interval of the connecting pieces is 50-100mm, and the length of the connecting pieces is greater than half of the thickness of the heavy bamboo board.

[0022] The connecting pieces are arranged on the metal plate, and the connecting pieces are arranged on the metal plate, and the connecting pieces are arranged on the metal plate.

[0023] Further, the thickness of the heavy bamboo board is greater than the thickness of the metal plate, and the thickness of the heavy bamboo board is at least 2 times the thickness of the metal plate.

[0024] The heavy bamboo board has good durability and a service life significantly higher than that of cement, and can be used as a main material.

[0025] Further, the heavy bamboo board and the metal plate are provided with an elastic transition layer, the top of the connecting piece is provided with a thread, the heavy bamboo board is provided with a through hole, and the top of the connecting piece is fixed on the heavy bamboo board through a nut after penetrating the elastic transition layer and the through hole.

[0026] Due to the thickness difference between the heavy bamboo board and the metal plate, the thickness difference may cause uneven stress distribution between the heavy bamboo board and the metal plate when stressed, especially stress concentration at the edge of the heavy bamboo board, leading to structural deformation or cracking. An elastic transition layer is arranged between the heavy bamboo board and the metal plate to relieve stress concentration and improve the impact resistance of the structure. In addition, the connecting piece is fixed with a nut after penetrating the heavy bamboo board, which can produce a more stable and reliable mechanical connection between the metal plate and the heavy bamboo board. The material of the elastic transition layer can be rubber or an elastic polymer, such as ethylene-propylene-diene rubber, polyurethane elastomer, or thermoplastic elastomer.

[0027] Further, the metal insert is arranged on the inner wall of the through hole, the shape of the metal insert is matched with the through hole, and the two ends of the metal insert are provided with annular limiting pieces for limiting the metal insert in the through hole.

[0028] At the connecting position of the connecting piece and the heavy bamboo board, a metal insert and other local reinforcing structures are added to improve the local compressive strength of the heavy bamboo board, prevent crushing or deformation, and affect the overall structural performance of the combined board. The material of the connecting piece can be selected from stainless steel, aluminum, carbon steel, etc. The material of the metal insert can be selected from stainless steel and aluminum.

[0029] In addition, the annular limiting piece on the metal insert can also be used as a gasket at the connection between the heavy bamboo board and the nut to enhance the local compressive capacity of the heavy bamboo board at the connection and improve the stability of the connection.

[0030] Further, the two sides of the metal plate are coated with an anti-corrosion coating.

[0031] The metal plate can be affected by the environment, such as humidity, acid rain and the like in long-term use, so that the metal plate is corroded, and then the service life of the whole structure of the combined plate is affected. The metal plate can be coated with an anti-corrosion coating, and the anti-corrosion coating can be selected from polyurethane coating or galvanized coating, so as to enhance the corrosion resistance of the metal plate. The metal plate can also be made of stainless steel or aluminum alloy and the like which has high corrosion resistance.

[0032] Effects of the present application

[0033] 1. The present application uses heavy bamboo plates as main materials, and metal plates as auxiliary rigid structures, and is fixed through a connecting structure, and has the advantages of simple structure, good integrity, convenient installation, long service life, low cost, green environmental protection, and the like, and can greatly shorten the construction period by adopting a full assembly type pavement construction method, and can also be used as building structure floors, wall partitions and the like.

[0034] 2. The connecting structure of the present application adopts connecting pieces and adhesive layers, and the connecting pieces arranged in a staggered manner can significantly enhance the adhesion between the heavy bamboo plates and the metal plates, and further increase the overall integrity of the combined plate structure; meanwhile, the adhesive layer can adhere to the connecting pieces, so as to enhance the stability of the connecting pieces in the heavy bamboo plates.

[0035] 3. The heavy bamboo plates of the present application are made of carbonized bamboo, which is cheap, easy to obtain and has small weight, and is convenient for assembly and transportation; the carbonized bamboo has good durability, can effectively prolong the service life, and has a service life obviously higher than that of cement, so that the frequency of road repair can be effectively reduced, and the cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a structural schematic view of the present application;

[0037] Figure 2 It is an enlarged view of A of the present application;

[0038] Figure 3 It is a sectional schematic view of the present application;

[0039] Figure 4 It is an enlarged view of B of the present application;

[0040] Figure 5 It is a five-layer plate structure schematic view of the present application;

[0041] Figure 6 It is a first structure schematic view of the metal plate of the present application;

[0042] Figure 7 It is a second structure schematic view of the metal plate of the present application;

[0043] Figure 8 It is a connecting schematic view of the metal insert and the heavy bamboo plate of the present application;

[0044] Reference numerals: 1-reinforced bamboo board, 2-metal plate, 3-adhesive layer, 4-connector, 5-metal insert, 6-annular limiting piece, 7-through hole. Detailed Implementation

[0045] Example 1

[0046] like Figures 1-2 As shown, a composite bamboo and metal panel includes a composite bamboo panel 1 and a metal panel 2. Several composite bamboo panels 1 are arranged side-by-side, with a metal panel 2 arranged side-by-side between two adjacent composite bamboo panels 1. A connecting structure is provided between the composite bamboo panels 1 and the metal panel 2. The panel includes at least two composite bamboo panels 1, with a metal panel 2 arranged between two composite bamboo panels 1. The connecting structure includes connectors 4, which are disposed on the surface of the metal panel 2 and arranged alternately. The metal panel 2 is connected to the composite bamboo panels 1 by inserting the connectors 4 through them.

[0047] This utility model's composite panel consists of multiple parallel-arranged reconstituted bamboo panels 1 and metal panels 2. A metal panel 2 is placed between two adjacent reconstituted bamboo panels 1, and the metal panel 2 and the reconstituted bamboo panels 1 are connected by a connecting structure to form the composite panel. This composite panel can serve as a main road surface assembly structure. The composite panel can be prefabricated using standardized manufacturing processes to produce prefabricated components of uniform specifications. During installation, all prefabricated components are assembled and connected using bolts, and on-site excavation and backfilling are carried out simultaneously, which can significantly shorten the construction period. The reconstituted bamboo panels 1 are made of inexpensive and readily available bamboo, which is cheaper and more readily available than cement, effectively reducing costs.

[0048] Depending on the road surface assembly requirements, the composite panels can be configured with different numbers of layers:

[0049] like Figures 3-4 As shown, the composite board can be a three-layer structure of reconstituted bamboo board 1 - metal board 2 - reconstituted bamboo board 1. The thickness of both reconstituted bamboo boards 1 is 30mm. The metal board 2 is made of stainless steel and has a thickness of 5mm. The spacing of the connectors 4 on the metal board 2 is 80mm. The connectors 4 are stainless steel spikes with a length of 30mm. The density of the reconstituted bamboo board 1 is 0.9g / cm³, and its compressive strength is 100MPa. The reconstituted bamboo board 1 and the metal board 2 are connected by stainless steel spikes. The stainless steel spikes are fixed to the metal board 2. During connection, pressure is applied to insert the end of the stainless steel spike away from the metal board 2 into the interior of the reconstituted bamboo board 1, achieving a tight connection between the metal board 2 and the reconstituted bamboo board 1.

[0050] In addition, such as Figure 1 and Figure 5As shown, the combined board can be a five-layer structure of heavy bamboo board 1-metal plate 2-heavy bamboo board 1-metal plate 2-heavy bamboo board 1, the thickness of the four heavy bamboo boards 1 is 40 mm, the thickness of the two metal plates 2 is 10 mm, the spacing of the connectors 4 on the metal plate 2 is 50 mm, the connector 4 is a stainless steel spike, the length of the spike is 25 mm, the density of the heavy bamboo board 1 is 1.1 g / cm3, and the compressive strength is 85 MPa. The heavy bamboo board 1 and the metal plate 2 are connected by the stainless steel spike, the stainless steel spike is fixed on the metal plate 2, and when connected, the end of the stainless steel spike away from the metal plate 2 is inserted into the heavy bamboo board 1 under the action of pressure, forming a tight connection of the three-layer combined board of heavy bamboo board 1-metal plate 2-heavy bamboo board 1. Another heavy bamboo board 1 is arranged side by side on the outer surface of one side of the heavy bamboo board 1, and one metal plate 2 is arranged between the two heavy bamboo boards 1, and the stainless steel spikes on both sides of the metal plate 2 are inserted into the heavy bamboo boards 1 under the action of pressure, forming a tight connection of the five-layer combined board of heavy bamboo board 1-metal plate 2-heavy bamboo board 1-metal plate 2-heavy bamboo board 1.

[0051] When the combined board is a three-layer structure, the arrangement of the connectors 4 on the metal plate 2 includes but is not limited to Figure 6 or Figure 7 the structure shown; when the combined board is a multi-layer structure greater than three layers, the arrangement of the connectors 4 on the metal plate 2 is preferably Figure 5 or Figure 7 the structure shown.

[0052] According to the above method, a multi-layer structure with heavy bamboo boards 1 as the outermost layers can be made, and the thickness of the heavy bamboo boards 1 on both sides of the same metal plate 2 can be the same or different; the specific arrangement of the connectors 4 on the metal plate 2 can also be set according to actual construction requirements. The material of the connector 4 can also be aluminum, carbon steel, etc., or other workpieces that can meet the requirements of the utility model. The material of the metal plate 2 can also be an aluminum plate, a carbon steel plate, etc.

[0053] Example 2

[0054] Based on Example 1, as shown in Figures 3-4 the connecting structure further includes an adhesive layer 3, and the adhesive layer 3 is arranged on one side of the heavy bamboo board 1 close to the metal plate 2.

[0055] The adhesive layer 3 is arranged on the heavy bamboo board 1, and when the heavy bamboo board 1 is connected with the metal plate 2, the connector 4 on the metal plate 2 penetrates through the adhesive layer 3 and then penetrates into the heavy bamboo board 1 under the action of pressure, and the pressure is continuously applied until the adhesive layer 3 solidifies.

[0056] In this embodiment, the adhesive layer 3 is neoprene adhesive, and the curing time is 12-24 hours. Taking a three-layer composite board of reconstituted bamboo board 1-metal board 2-reconstituted bamboo board 1 as an example, the thickness of both reconstituted bamboo boards 1 is 10mm, the metal board 2 is an aluminum plate with a thickness of 2mm, the spacing of the connectors 4 on the metal board 2 is 100mm, the connectors 4 are stainless steel spikes with a length of 5mm, the density of the reconstituted bamboo board 1 is 1.0g / cm3, and the compressive strength is 90MPa.

[0057] The bamboo board 1 and the metal board 2 are connected by stainless steel spikes and neoprene adhesive. Neoprene adhesive is applied to the side of the two bamboo boards 1 that is close to the metal board 2. The stainless steel spikes are fixed to the two sides of the metal board 2 that are close to the two bamboo boards 1. When connecting, the bamboo board 1-metal board 2-bamboo board 1 are arranged side by side. Under pressure, the stainless steel spikes on both sides of the metal board 2 penetrate the neoprene adhesive and then insert into the bamboo boards 1 on both sides. The pressure is continued for 18 hours until the neoprene adhesive solidifies.

[0058] Example 3

[0059] Based on Example 1, such as Figure 7 As shown, an elastic transition layer is provided between the bamboo board 1 and the metal plate 2. The top of the connector 4 is threaded, and a through hole 7 is provided on the bamboo board 1. The top of the connector 4 passes through the elastic transition layer and the through hole 7 and is fixed to the bamboo board 1 by a nut. A metal insert 5 is provided on the inner wall of the through hole 7. The shape of the metal insert 5 is adapted to the through hole 7. Annular limiting pieces 6 are provided at both ends of the metal insert 5 to restrict the metal insert 5 within the through hole 7.

[0060] Between adjacent bamboo panels 1 and metal panels 2, elastic transition layers are respectively provided. The elastic transition layers are made of polyurethane elastomer, forming a five-layer structure of bamboo panel 1-elastic transition layer-metal panel 2-elastic transition layer-bamboo panel 1. Through holes 7 are made in the bamboo panels 1, and metal inserts 5 are installed in the through holes 7 to improve the local compressive strength at the through holes 7 on the bamboo panels 1. The top of the connector 4 is made of thread. When connecting, the top of the connector 4 passes through the elastic transition layer and the through hole 7, and the top of the connector 4 is fixed to the through hole 7 on the bamboo panels 1 by a nut. The annular limiting piece 6 located around the through hole 7 not only restricts the metal insert 5, but also serves as a gasket at the connection between the bamboo panels 1 and the nut, enhancing the local compressive strength of the bamboo panels 1 at the connection.

[0061] Other fastening methods, such as using coil nails to fasten the metal plate 2 to the bamboo board 1; using lightweight and high-strength materials to replace ordinary metal precast panels for the metal plate 2; and using other adhesive materials to replace neoprene glue for panel connection are all alternative solutions of this utility model and are all within the protection scope of this utility model.

Claims

1. A heavy bamboo metal composite board, characterized by, The heavy bamboo board (1) and the metal plate (2), the heavy bamboo board (1) has several and is arranged side by side, and one metal plate (2) is arranged side by side between two adjacent heavy bamboo boards (1), and a connecting structure is arranged between the heavy bamboo board (1) and the metal plate (2), Wherein, including at least two heavy bamboo boards (1), one metal plate (2) is arranged between two heavy bamboo boards (1), the connecting structure includes connecting pieces (4), the connecting pieces (4) are arranged on the surface of the metal plate (2) and staggered, and the metal plate (2) is connected with the heavy bamboo board (1) by penetrating the connecting pieces (4) into the heavy bamboo board (1).

2. The heavy bamboo-metal composite board according to claim 1, wherein, The connecting structure further comprises an adhesive layer (3), which is arranged on one side of the heavy bamboo board (1) close to the metal plate (2).

3. The heavy bamboo-metal composite board according to claim 1, wherein, The connecting pieces (4) are arranged on the two sides of the metal plate (2) close to the heavy bamboo board (1), and cover the two sides.

4. The heavy bamboo-metal composite board according to claim 1, wherein The thickness of the heavy bamboo board (1) is 10-40mm, the density of the heavy bamboo board (1) is 0.9-1.1g / cm3, and the compressive strength is 85-100MPa.

5. The heavy bamboo-metal composite panel according to claim 1, wherein The arrangement spacing of the connecting pieces (4) is 50-100mm, and the length of the connecting pieces (4) is greater than half the thickness of the heavy bamboo board (1).

6. The heavy bamboo-metal composite panel as claimed in claim 1, wherein, The thickness of the heavy bamboo board (1) is greater than the thickness of the metal plate (2), and the thickness of the heavy bamboo board (1) is at least twice the thickness of the metal plate (2).

7. The heavy bamboo-metal composite board according to claim 6, wherein The connecting pieces (4) are arranged on the two sides of the metal plate (2) close to the heavy bamboo board (1), and cover the two sides.

8. The heavy bamboo-metal composite board according to claim 7, wherein, The metal insert (5) is arranged on the inner wall of the through hole (7), the shape of the metal insert (5) is matched with the through hole (7), and the annular limiting piece (6) is arranged at both ends of the metal insert (5), the annular limiting piece (6) is used to limit the metal insert (5) in the through hole (7).

9. The heavy bamboo metal composite panel according to claim 7, wherein, The two sides of the metal plate (2) are coated with an anticorrosive coating.

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