Heavy bamboo and metal plate combined I-shaped beam

Abstract

The utility model discloses a heavy bamboo and metal plate combined I-shaped beam, and relates to the technical field of building materials. Connecting plates are arranged on the two side faces of the web plate and used for connecting the web plate with the two flanges, limiting pieces are arranged on the flanges, the tail ends of the limiting pieces abut against the outer side faces of the connecting plates, the limiting pieces are used for limiting and fixing the web plate between the two flanges, and the connecting plates are used for connecting the web plate with the flanges. An adhesive is coated on the contact surface of the web plate and the flange, the flange and the web plate are combined plates, each combined plate comprises a plurality of heavy bamboo plates and metal plates which are arranged in parallel, one metal plate is arranged between every two adjacent heavy bamboo plates, the heavy bamboo plates are arranged on the outermost sides of the combined plates, and the metal plates are arranged between the heavy bamboo plates and the metal plates. And a connecting structure is arranged between the heavy bamboo plate and the metal plate. The I-shaped beam is made of heavy bamboo board light environment-friendly materials, has the advantages of being small in dead weight, strong in mechanical property and low in cost, and is easy to produce on a large scale.

Description

TECHNICAL FIELD

[0001] The utility model relates to building material technical field especially relates to a heavy bamboo metal plate combination I beam. BACKGROUND

[0002] I beam is a kind of commonly used building structural member, and it is named because its cross-sectional shape is similar to Chinese character "Gong", its unique cross-sectional design makes it show excellent mechanical properties when bearing bending and shearing force, so it is widely used in housing construction, bridge, port wharf, large steel structure and other engineering.In high-rise housing construction and large-span building, I beam is commonly used for the support of floor, roof and wall, can effectively share load, improve the overall stability of building.In bridge construction, I beam is commonly used for girder and crossbeam, can bear the load of vehicle and pedestrian, at the same time, resist the action of wind, earthquake and other natural forces.

[0003] At present, the manufacturing technology of I beam has realized standardization and large-scale production, through high-strength steel and advanced welding process, I beam has good performance in bearing capacity, seismic performance and durability.At the same time, with the continuous expansion of building scale and the popularization of green building concept, the design and manufacturing technology of I beam are also constantly improving, but at the same time, it also faces the challenges of initial deflection deformation, difficult transportation and installation, lightweight demand, etc.

[0004] To meet the needs of modern architecture, building scale gradually becomes larger, and the size of I beam is also increased, large iron I beam often has large initial deflection deformation in processing process, which leads to that the structure flatness after installation is difficult to guarantee, and affects the appearance and use performance of building.The weight and size of large I beam are large, and large lifting equipment and professional construction team are needed in transportation and installation process, which increases construction difficulty and cost.At present, the market urgently needs lightweight and energy-saving I beam. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of heavy bamboo metal plate combination I beam, form combination plate by the connection of two sides heavy bamboo plate and metal plate, assemble combination plate into I beam, and connect and reinforce I beam by limiting piece and connecting plate, solve the technical problems of high weight and high cost of existing I beam.

[0006] A composite I-beam of bamboo and metal plates includes a web and two flanges. Connecting plates are provided on both sides of the web to connect the web and the two flanges. Limiting members are provided on the flanges, with the ends of the limiting members abutting against the outer surfaces of the connecting plates. The limiting members restrict and fix the web between the two flanges. Adhesive is applied to the contact surfaces of the web and flanges. Both the flanges and the web are composite plates, each comprising multiple bamboo and metal plates arranged side-by-side. A metal plate is positioned between two adjacent bamboo plates. The outermost surfaces of the composite plate are all bamboo plates, and a connecting structure is provided between the bamboo and metal plates.

[0007] Reconstituted bamboo, also known as reorganized bamboo, is a new type of bamboo material that is reorganized and strengthened. This involves processing bamboo into long strips, shreds, or crushed bundles, drying them, impregnating them with resin, drying them again to the required moisture content, and then laying them in a mold for high-temperature, high-pressure thermosetting to create a profile. Reconstituted bamboo is then compacted using a press to produce reconstituted bamboo boards.

[0008] This invention uses reconstituted bamboo as the main material, fully leveraging its high strength, lightweight, and environmental friendliness. High-strength and durable aluminum alloy or stainless steel is selected as the metal plate, and the metal plates are placed in an alternating arrangement between two reconstituted bamboo boards. A connecting structure secures the bamboo boards and metal plates together to form a composite board. This composite board is lightweight, highly resistant to compression, bending, and durable. Flanges and webs are fabricated using this composite board, with adhesive applied between them. Connecting plates and limiting members are incorporated. The connecting plates connect the flanges and webs, while the limiting members restrict and fix the webs between the two flanges, creating an I-beam structure. The adhesive can be polyurethane or epoxy resin. The limiting members abut against the panels of the connecting plates through tangential contact, ensuring the stability of the limiting members' position. The I-beam of this utility model is made of lightweight and environmentally friendly bamboo board material. Compared with traditional metal I-beams, it has the characteristics of low self-weight, strong mechanical properties and low cost. Moreover, it has a simple structure, is easy to achieve large-scale production, and can be applied to bridges, building frames, temporary structures, etc.

[0009] The composite panel of this utility model is made of multiple layers of bamboo plywood and metal plates. A metal plate is set side by side between two adjacent bamboo plywood, and the outermost layer of the composite panel is all bamboo plywood. The adjacent metal plates and bamboo plywood are connected and fixed by a connecting structure, which enhances the tightness of the connection between the metal plate and the bamboo plywood and improves the overall performance of the composite panel.

[0010] Metal plates, connecting plates, and limiting components / blocks are made of aluminum alloy or stainless steel. The density of high-density reconstituted bamboo board is 1.0–1.3 g / cm³. 3The anti-pressure strength is 85-100 MPa, and the thickness is 10-40 mm.

[0011] Further, the heavy bamboo board is provided with at least two, and a metal plate is arranged between the two heavy bamboo boards, the connecting structure comprises a glue layer, and the glue layer is arranged between the heavy bamboo board and the metal plate.

[0012] The utility model discloses a combined board which is composed of at least two heavy bamboo boards and a metal plate, and a glue layer is coated on one side of the heavy bamboo board close to the metal plate, and the heavy bamboo boards, the metal plate and the heavy bamboo boards are arranged in the order of heavy bamboo board-metal plate-heavy bamboo board from bottom to top, and then wait for solidification.

[0013] Further, the connecting structure further comprises connecting pieces, the connecting pieces are arranged in a matrix, the connecting pieces are arranged on the two side surfaces of the metal plate, and the ends of the connecting pieces are inserted into the heavy bamboo boards.

[0014] In order to enhance the overall stability of the combined board, a plurality of connecting pieces are arranged on the metal plate, the connecting pieces can be aluminum alloy rivets or carbon steel spikes, the connecting pieces can be arranged in a matrix, the spacing between the spikes is 50-100 mm, the heavy bamboo boards coated with the glue are placed above and below the metal plate, and a heavy object is pressed to tightly connect the metal plate and the heavy bamboo boards on both sides, and the three-layer combined board can be obtained after the glue layer is completely solidified.

[0015] Further, the two ends of the connecting plate abut against the two flanges, are bent along the flange planes and form platforms, the platforms are attached to the two flange planes, and the connecting plate is coated with the glue on the contact surfaces of the connecting plate, the flanges and the web.

[0016] The connecting plate is arranged in a half-frame structure, the vertical part of the connecting plate is attached to the web, the upper and lower platform parts of the connecting plate are attached to the two flanges, the bent part of the connecting plate is arranged in a right angle, the connecting plate is more closely attached to the flanges and the web, the parts of the half-frame structure I-beam are closely connected, and the overall stability of the I-beam is improved.

[0017] Further, the limiting pieces are arranged in a plurality of and are symmetrically arranged on the outer side surfaces of the two connecting plates and penetrate the platforms.

[0018] The plurality of limiting members are symmetrically arranged on the outer side of the connecting plate and abut against the outer side of the connecting plate, thereby ensuring the stability of the connection between the connecting plate and the flange.

[0019] Further, the limiting member is threadedly connected with the flange and the platform, the head of the limiting member is arranged on the side of the flange away from the web, and a first gasket is arranged between the head of the limiting member and the flange.

[0020] The limiting member fixes the connection between the flange and the platform of the connecting plate, thereby ensuring the stability of the connection between the flange and the connecting plate and the web; the double fixation of the adhesive- mechanical connection can avoid the failure risk caused by the aging of a single adhesive or metal fatigue. The first gasket is arranged between the head of the limiting member and the flange, and the gasket is a rubber- metal composite gasket, i.e., a metal gasket is wrapped with a rubber sleeve outside, the gasket can disperse the bolt pretightening force at the connection between the limiting member and the heavy bamboo plate, thereby avoiding the crushing or cracking of the heavy bamboo plate caused by excessive local pressure.

[0021] Further, the limiting member is provided with a thread, the platform and the two flanges are provided with threaded through holes, and the threaded through holes are matched with the limiting member.

[0022] The thread is arranged on the limiting member, the threaded through holes are symmetrically arranged on both sides of the flange at the contact surface between the flange and the web, and the threaded through holes with the same aperture are arranged at the corresponding positions on the platform of the connecting plate; the end of the limiting member is once threaded through the threaded through holes on the flange and the platform of the connecting plate, thereby threadedly connecting and fixing the flange and the platform of the connecting member together; the end of the limiting member is tangent to the outer side of the vertical part of the connecting plate to form abutment, thereby ensuring the stability of the position of the limiting member. The head of the limiting member is left on the side of the flange away from the web, thereby limiting and fixing the limiting member in the flange and the platform of the connecting plate, so that the flange and the connecting plate are tightly connected.

[0023] Further, the connecting plate and the web are connected by bolts, the connecting plate and the web are provided with through holes corresponding to each other, the through holes are a plurality of, the bolts are threaded through the through holes, the two ends of the bolts are fixed by nuts, and a gasket is arranged between the nut and the connecting plate.

[0024] The combined plate and the flange made of the combined plate are directly glued or simply mechanically connected, and the interface shear failure is prone to occur. The metal connecting plate is arranged on both sides of the web, and the upper and lower ends of the connecting plate are in rigid contact with the flange, so that the connecting plate becomes a transition force transmission layer, the shear force and the bending moment applied by the flange are more uniformly transmitted to the web through the bolts; a plurality of bolts form a shear key to resist the relative sliding between the web and the flange; the bolted connecting plate can be regarded as a transverse stiffening rib of the web, thereby improving the buckling resistance of the web.

[0025] The end of the limiting piece can be fixed by setting a limiting block to further stabilize the limiting effect of the limiting piece. The limiting block is welded on the connecting plate, and the limiting block limits and fixes the end of the limiting piece close to the connecting plate.

[0026] Advantages of the present utility model

[0027] 1. The present utility model uses heavy bamboo board as the main material, selects aluminum alloy or stainless steel with high strength and durability as the metal plate, and combines the two to form a combined plate. The combined plate is used to make flanges and webs, and limiting pieces and connecting plates are arranged between the flanges and the webs. The webs are limited and fixed between the two flanges by the limiting pieces, and the tightness of the webs and the two flanges is improved by the connecting plates to form an I-beam. The I-beam of the present utility model is made of light and environmentally friendly materials, which not only reduces the weight, but also maintains sufficient strength and stability.

[0028] 2. The combined plate of the present utility model uses heavy bamboo board as the main material and metal plate as the auxiliary rigid structure, which is fixed by a connecting structure. The structure is simple, has good integrity, is convenient to install, is durable, has low cost, and is green and environmentally friendly. The heavy bamboo board is made of bamboo, which has good durability, is cheap and easy to obtain, and has small weight, which is convenient for assembly and transportation and can effectively prolong the service life.

[0029] 3. The production process of the present utility model is simple and easy to realize large-scale production, and can be prefabricated. It is widely used in bridges, building frames, temporary structures, etc., and has high practicality and economy. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic view of the I-beam of the present utility model;

[0031] Figure 2 It is a sectional view of the I-beam of the present utility model;

[0032] Figure 3 It is a plan view of the I-beam of the present utility model;

[0033] Figure 4 It is a flange sectional view of the I-beam of the present utility model;

[0034] Figure 5 It is a C-C sectional view of the I-beam of the present utility model;

[0035] 1 - heavy bamboo board, 2 - metal plate, 3 - connecting piece, 4 - adhesive layer, 5 - limiting piece, 6 - first gasket, 7 - nut, 8 - connecting plate, 9 - flange, 10 - web, 11 - second gasket. DETAILED DESCRIPTION

[0036] Example 1

[0037] As shown in Figure 1 and Figure 5 A heavy bamboo metal plate 2 combination I-beam, including web 10 and two flanges 9, the two sides of the web 10 are provided with connecting plates 8, the connecting plates 8 are used to connect the web 10 and two flanges 9, the flanges 9 are provided with limiting pieces 5, the ends of the limiting pieces 5 abut the outer side of the connecting plate 8, the limiting pieces 5 are used to limit and fix the web 10 between the two flanges 9, wherein the web 10 and the flange 9 contact surface is coated with an adhesive, the flange 9 and the web 10 are both combination plates, the combination plate includes a plurality of heavy bamboo boards 1 and metal plates 2 arranged side by side, one metal plate 2 is arranged between two adjacent heavy bamboo boards 1, and the outermost side of the combination plate is a heavy bamboo board 1, and a connecting structure is arranged between the heavy bamboo board 1 and the metal plate 2.

[0038] The utility model discloses a heavy bamboo board 1 as main material, selects the stainless steel with high strength and durability as metal plate 2, adopts the way of staggered arrangement, places the metal plate 2 between two heavy bamboo boards 1, and fixes and connects the heavy bamboo board 1 and the metal plate 2 through the connecting structure to make the combination plate, applies the combination plate to make the flange 9 and the web 10, and coats the adhesive between the flange 9 and the web 10, and sets up the connecting plate 8 and the limiting piece 5, connects the flange 9 and the web 10 through the connecting plate 8, limits and fixes the web 10 between the two flanges 9 through the limiting piece 5, and makes I-beam structure. The adhesive connection is adopted at the connecting place of the web 10 and the two flanges 9, and the adhesive can select polyurethane adhesive, the limiting piece 5 and one side of the connecting plate 8 abut through tangency, guaranteeing the stability of the position of the limiting piece 5.

[0039] The metal plate 2 is selected from stainless steel, the thickness of the heavy bamboo plate 1 is 35 mm, the density of the heavy bamboo plate 1 is 1.2 g / cm3, the compressive strength of the heavy bamboo plate 1 is 90 MPa, the heavy bamboo plate 1 and the metal plate 2 are arranged side by side and staggered and stacked to form a five-layer structure of the heavy bamboo plate 1-metal plate 2-heavy bamboo plate 1-metal plate 2-heavy bamboo plate 1, a connecting structure is arranged between the adjacent heavy bamboo plate 1 and the metal plate 2, the heavy bamboo plate 1 and the metal plate 2 are connected and fixed together through the connecting structure, and a five-layer composite plate is formed. The five-layer composite plate is cut into flanges 9 and webs 10 of a required size, the flanges 9 and the webs 10 are assembled into an I-beam, the flanges 9 and the webs 10 are connected at the connecting positions through polyurethane adhesive, connecting plates 8 are arranged at the connecting positions of the webs 10 and the flanges 9 on two sides, the webs 10 and the flanges 9 are connected through the connecting plates 8, the tightness of the connection between the parts of the I-beam is enhanced, and the connecting plates 8 are tangent to the limiting pieces 5 and abut against the limiting pieces 5, so that the connection between the flanges 9 and the webs 10 is further enhanced.

[0040] The I-beam is made of the heavy bamboo plate 1 and has the characteristics of small self-weight, strong mechanical property and low cost compared with a traditional metal I-beam.

[0041] Embodiment 2

[0042] Based on the embodiment 1, as shown in Figure 2 and Figure 5 The connecting structure comprises a glue layer 4, and the glue layer 4 is arranged between the heavy bamboo plate 1 and the metal plate 2.

[0043] The connecting structure further comprises connecting pieces 3, the connecting pieces 3 are arranged in a matrix, the connecting pieces 3 are arranged on two side surfaces of the metal plate 2, and the connecting pieces 3 are inserted into the heavy bamboo plate 1.

[0044] The composite plate can be composed of multiple heavy bamboo plates 1 and metal plates 2, is composed of at least two heavy bamboo plates 1 and one metal plate 2, and the metal plate 2 is located between the two heavy bamboo plates 1. A 3 mm thick epoxy resin adhesive is applied to one side of the heavy bamboo plate 1 close to the metal plate 2, and carbon steel long nails are welded on the metal plate 2, the long nails are arranged in a matrix and have a spacing of 80 mm, the heavy bamboo plate 1, the metal plate 2 and the heavy bamboo plate 1 are arranged in this order, the top is given heavy pressure, the long nails are inserted into the heavy bamboo plate 1, and after the epoxy resin adhesive is cured, a three-layer composite plate can be obtained. The composite plate is cut into flanges 9 and webs 10, and an I-beam is obtained by assembling.

[0045] Embodiment 3

[0046] Based on example 1, as shown in Figures 1-5 The two ends of the connecting plate 8 abut against the two flanges 9 and are bent along the plane of the flanges 9 to form a platform, the platform is flush with the planes of the two flanges 9, and the connecting plate 8 is coated with the adhesive on the contact surfaces of the flanges 9 and the web 10. The limiting pieces 5 are provided in plurality and are symmetrically arranged on the outer sides of the two connecting plates 8 and penetrate the platform. The limiting pieces 5 are threadedly connected with the flanges 9 and the platform, the heads of the limiting pieces 5 are arranged on the flanges 9 away from the web 10, and the first gaskets 6 are arranged between the heads of the limiting pieces 5 and the flanges 9. The limiting pieces 5 are provided with threads, the platform and the two flanges 9 are provided with threaded through holes which are adapted to the limiting pieces 5. The connecting plate 8 is connected with the web 10 by bolts, and the connecting plate 8 and the web 10 are provided with through holes corresponding to each other, the through holes are in plurality, the bolts penetrate the through holes, and the two ends of the bolts are fixed by the nuts 7, and the second gaskets 11 are arranged between the nuts 7 and the connecting plate 8.

[0047] The connecting plates 8 are symmetrically arranged on the two sides of the web 10 and are arranged in a half-frame structure, the vertical parts of the connecting plates 8 are flush with the web 10, the upper and lower platform parts of the connecting plates 8 are flush with the two flanges 9, and the bent parts of the connecting plates 8 are arranged in right angles, so that the connecting plates 8 are more closely attached with the flanges 9 and the web 10. The polyurethane adhesive is coated on the contact surfaces of the connecting plates 8, the flanges 9 and the web 10.

[0048] The connecting plates 8 are symmetrically arranged on the two sides of the web 10, one threaded through hole is symmetrically arranged on the two sides of the connecting part of the flange 9 and the web 10, and threaded through holes are arranged at the corresponding positions of the platform, the limiting pieces 5 are provided with threads, two limiting pieces 5 are installed on the flange 9 by threaded connection, the limiting pieces 5 penetrate the threaded through holes of the platform and are threadedly connected with the platform, the limiting pieces 5 are perpendicular to the bottom surface of the flange 9, the heads of the limiting pieces 5 are limited on the flange 9, the ends of the limiting pieces 5 are tangent to and abut against the vertical parts of the connecting plates 8 on the two sides of the web 10, and the web 10 is limited between the two flanges 9. The first gaskets 6 are arranged between the heads of the limiting pieces 5 and the flange 9, and the gaskets are rubber-metal composite gaskets, i.e. rubber sleeves are wrapped outside the metal gaskets.

[0049] Six through holes are arranged on the web 10 and the connecting plates 8 on the two sides of the web 10, and M10 bolts are used for fixation, the two ends of the bolts are fixed by the nuts 7, and the second gaskets 11 are additionally arranged between the nuts 7 and the connecting plates 8.

[0050] Adopt other fastening mode, such as utilize roll nail etc. to fasten metal plate with heavy bamboo board, metal plate adopts light weight high strength material to replace ordinary metal plate, adopt other adhesive material to replace neoprene and carry out board piece connection, all belong to the alternative scheme of the utility model, all belong to the protection scope of the utility model.

Claims

1. A heavy timber metal plate (2) combined I-beam comprising a web (10) and two flanges (9), characterized in that, Two sides of the web plate (10) are provided with connecting plates (8) for connecting the web plate (10) and the two flanges (9), the flanges (9) are provided with limiters (5), the ends of the limiters (5) abut the outer sides of the connecting plates (8), the limiters (5) are used for limiting and fixing the web plate (10) between the two flanges (9), Wherein, the contact surface of the web plate (10) and the flange (9) is coated with an adhesive, the flange (9) and the web plate (10) are both composite plates, the composite plate comprises a plurality of heavy bamboo plates (1) and metal plates (2) arranged side by side, one metal plate (2) is arranged between two adjacent heavy bamboo plates (1), the outermost side of the composite plate is a heavy bamboo plate (1), and a connecting structure is arranged between the heavy bamboo plate (1) and the metal plate (2).

2. The heavy timber metal plate (2) combined I-beam according to claim 1, characterized in that, The connecting structure comprises an adhesive layer (4) arranged between the heavy bamboo plate (1) and the metal plate (2).

3. The heavy timber metal plate (2) combined I-beam according to claim 2, characterized in that, The connecting structure further comprises a plurality of connectors (3) arranged in a matrix, the connectors (3) are arranged on the two sides of the metal plate (2), and the ends of the connectors (3) penetrate into the heavy bamboo plate (1).

4. The heavy timber metal plate (2) combined I-beam according to claim 1, characterized in that, Both ends of the connecting plate (8) abut the two flanges (9) and are bent along the plane of the flange (9) to form a platform, the platform is fitted with the planes of the two flanges (9), and the connecting plate (8) is coated with the adhesive on the contact surfaces of the web plate (10) and the flange (9).

5. The heavy timber metal plate (2) combined I-beam according to claim 4, characterized in that, The limiters (5) are arranged in a plurality of and symmetrically on the outer sides of the two connecting plates (8) and penetrate the platform.

6. The heavy timber metal plate (2) combined I-beam according to claim 5, characterized in that, The limiters (5) are threadedly connected with the flanges (9) and the platform, the heads of the limiters (5) are arranged on the flanges (9) away from the web plate (10), and first gaskets (6) are arranged between the heads of the limiters (5) and the flanges (9).

7. The heavy timber metal plate (2) combined I-beam according to claim 6, characterized in that, The limiters (5) are provided with threads, the platform and the two flanges (9) are provided with threaded through holes, and the threaded through holes are matched with the limiters (5).

8. The heavy timber metal plate (2) combined I-beam according to claim 4, characterized in that, The connecting plate (8) and the web plate (10) are connected by bolts, the connecting plate (8) and the web plate (10) are provided with through holes corresponding to each other, the through holes are a plurality of, the bolts penetrate the through holes, the two ends of the bolts are fixed by nuts (7), and second gaskets (11) are arranged between the nuts (7) and the connecting plate (8).

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