Basalt fiber reinforced high-strength fire-resistant glued bamboo component and preparation method thereof

Abstract

The invention discloses a basalt fiber reinforced high-strength fire-resistant glued bamboo component which comprises core area glued bamboo and basalt fiber cloth, the core area glued bamboo is wound and restrained by the basalt fiber cloth, and prestress is applied to the basalt fiber cloth. The invention further discloses a preparation method of the basalt fiber reinforced high-strength fire-resistant glued bamboo component. Compared with the prior art, the defects of traditional bamboo wood in the aspects of mechanical property and fire resistance can be overcome.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, and in particular to a basalt fiber reinforced high-strength fire-resistant glued bamboo component and a preparation method thereof. Background Art

[0002] Glued bamboo is a new type of building material made of bamboo through gluing. Glued bamboo components have the following characteristics: First, bamboo is a natural renewable resource that grows quickly and is widely available. Compared with traditional wood, bamboo has higher strength and hardness and better mechanical properties. Secondly, the production process of glued bamboo components is relatively simple and can be customized according to different design requirements. Through the gluing process, bamboo can be made into components of various shapes and sizes, such as beams, columns, panels, etc., to meet the needs of different building structures.

[0003] However, existing glued bamboo components also have some obvious disadvantages: First, the strength and ductility are poor. Although bamboo itself has a certain strength, during the gluing process, due to the limitations of the gluing process, the overall strength and ductility of glued bamboo components are often difficult to reach a high level. This makes glued bamboo components prone to damage when subjected to large loads, affecting their safety in use in building structures. Second, the fire resistance is poor. Bamboo is a flammable material, and the adhesive in the glued bamboo components may also burn in a fire, thereby reducing the fire resistance of the glued bamboo components. When a fire occurs, glued bamboo components are prone to burn, deform, or even collapse, posing a serious threat to people's lives and property safety.

[0004] In summary, although the existing glued bamboo components have certain advantages, they still have deficiencies in strength, ductility, fire resistance and durability, and need further improvement and perfection. In view of this, a basalt fiber reinforced high-strength fire-resistant glued bamboo component and a preparation method are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a basalt fiber reinforced high-strength fire-resistant glued bamboo component and a preparation method thereof, which can solve the deficiencies of traditional bamboo materials in terms of mechanical properties and fire resistance.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A basalt fiber reinforced high-strength fire-resistant glued bamboo component comprises a core glued bamboo and a basalt fiber cloth, wherein the basalt fiber cloth is wound around and constrains the core glued bamboo, and the basalt fiber cloth is applied with prestress.

[0008] In a preferred embodiment, when the basalt fiber cloth is wound and restrained on the core-region glued bamboo, the initial prestress level applied is 30%, and the prestress level is the ratio of the tension force to the ultimate tensile stress.

[0009] In a preferred embodiment, it also includes a surface glued bamboo veneer, and the surface glued bamboo veneer is arranged on the outer side of the basalt fiber cloth.

[0010] A method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component comprises the following steps:

[0011] Step 1: Prepare the core area glued bamboo;

[0012] Step 2: After gluing the basalt fiber cloth, wrap the basalt fiber cloth around the glued bamboo in the core area;

[0013] Step 3: tensioning the basalt fiber cloth, the initial prestressing level of the tensioning is set to 30%, and the prestressing level is the ratio of the tensioning force to the ultimate tensile stress;

[0014] Step 4: hot-press the core-area glued bamboo wrapped with basalt fiber cloth to achieve the connection between the basalt fiber and the core-area glued bamboo.

[0015] In a preferred embodiment, the specific operation process of step 1 includes: drying the bamboo strips to a moisture content of 8%-12%, planing the surface, applying 250g / m2 of glue on both sides, 2 , side pressing is carried out to assemble the blanks, and side pressing veneer is formed under hot pressing at a temperature of 130°C and a pressure of 1.2MPa. The side pressing veneer is glued and assembled, and hot pressed again to form the core area glued bamboo.

[0016] In a preferred embodiment, the specific operation process of step 1 is as follows: select bamboo strips with a bamboo age of 3-5 years and a density of 0.6-0.7g / cm3 and dry them to a moisture content of 8%-12%, slice the surface to a cross-sectional size of 20mm×6mm, and apply phenolic resin glue 250g / m3 on both sides. 2 , side pressing assembly is carried out, and the side pressed veneer is formed under hot pressing at a temperature of 130°C and a pressure of 1.2MPa for 100s. The side pressed veneer is glued and assembled, and the glue here is epoxy resin adhesive, and then hot pressed again to form the core area glued bamboo.

[0017] In a preferred embodiment, the method further comprises the step of chamfering the edges and corners of the glued bamboo in the core area.

[0018] In a preferred embodiment, the step 2 specifically includes: cutting the basalt fiber cloth according to the circumference of the core area glued bamboo, boiling it in a 20g / kg washing powder boiling water solution for 3 hours, and then soaking it in a 1.5% concentration silane coupling agent KH550 solution for 15 minutes after drying, and drying it again, and then applying glue to the basalt fiber cloth, and then winding the basalt fiber cloth on the core area glued bamboo.

[0019] In a preferred embodiment, the operation process of step 1 further includes: drying the bamboo strips to a moisture content of 8%-12%, planing the surface, applying 250g / m2 of glue on both sides, 2 , and side pressing and flat pressing are respectively performed to form side pressed veneers and flat pressed veneers under hot pressing at a temperature of 130°C and a pressure of 1.2MPa; and also includes step five: applying glue on the outside of the basalt fiber reinforced glued bamboo, and using the side pressed veneer and flat pressed veneer for surface covering, forming a basalt fiber reinforced glued bamboo component product by hot pressing, and covering the surface to cover the basalt fiber cloth 4 to retain the original appearance and texture of the glued bamboo.

[0020] In a preferred embodiment, the specific operation process of step 1 is as follows: select bamboo strips with a bamboo age of 3-5 years and a density of 0.6-0.7g / cm3, dry them to a moisture content of 8%-12%, slice the surface to a cross-sectional size of 20mm×6mm, and apply phenolic resin glue 250g / m3 on both sides. 2 , side pressing assembly and flat pressing assembly are performed respectively, under hot pressing at a temperature of 130°C and a pressure of 1.2MPa for 100s to form side pressing veneers and flat pressing veneers respectively.

[0021] In a preferred embodiment, the basalt fiber cloth is tensioned in step three using a tensioning device, the tensioning device includes two tensioning components, the tensioning components include an upper clamping plate, a lower clamping plate, a rotating shaft, a locking bolt, a locking nut, a tensioning anchor, a self-tapping screw, a tensioning bolt and a tensioning nut, one end of the upper clamping plate and the lower clamping plate are rotatably connected through the rotating shaft, and the other end of the upper clamping plate and the lower clamping plate are respectively provided with a locking hole, the locking bolt passes through the locking hole and is engaged with the locking nut In coordination with each other, an anchor hole is provided on the lower clamping plate, the tensioning anchor is provided on the upper clamping plate, the tensioning bolt passes through the tensioning anchors of the two tensioning members and cooperates with the tensioning nut; when tensioning, one tensioning member clamps one side edge of the basalt fiber cloth, and the other tensioning member clamps the other side edge of the basalt fiber cloth, the self-tapping screw passes through the anchor hole of one tensioning member and is inserted into the core area glued bamboo, and then tensioning is performed by rotating the tensioning bolt.

[0022] In a preferred embodiment, the tensioning device also includes a positioning component, the positioning component includes a plurality of positioning components and positioning components, the positioning components include an adhesion seat, a first rotating wheel, a second rotating wheel and an indicating wheel, the adhesion seat includes an adhesion plate and a support plate, the support plate is arranged on the adhesion plate, a shielding portion is provided on the support plate, the first rotating wheel, the second rotating wheel and the indicating wheel are arranged on the shielding portion, the circumferences of the first rotating wheel and the second rotating wheel fit each other and rotate together, the radius of the second rotating wheel is 2-4 times the radius of the first rotating wheel, the first rotating wheel and the indicating wheel are coaxially arranged, the indicating wheel is provided with an indicating mark, and during the rotation of the indicating wheel, the indicating mark has the characteristics of being blocked or not blocked by the shielding portion The basalt fiber cloth is in a blocking state, the positioning component includes a first positioning pin, a second positioning pin and an elastic pull wire, and the two ends of the elastic pull wire are respectively connected to the first positioning pin and the second positioning pin; when tensioning, the positioning component is provided on at least one side of the basalt fiber cloth, the first positioning pin and the second positioning pin are provided on both sides of the side of the basalt fiber cloth, and a plurality of the positioning components are evenly distributed between the first positioning pin and the second positioning pin, the adhesion plate is adhered to the surface of the basalt fiber cloth, the circumference of the second rotating wheel contacts the elastic pull wire, when the second rotating wheel and the elastic pull wire move relative to each other, the second rotating wheel rotates, and when the indicator mark is blocked by the blocking portion, it indicates that the tensioning process of the basalt fiber cloth is uneven.

[0023] Compared with the prior art, the basalt fiber reinforced high-strength fire-resistant glued bamboo component provided by the present invention has the following advantages:

[0024] The high-strength fire-resistant glued bamboo components reinforced with basalt fibers are effectively constrained in the core area of ​​the glued bamboo components by wrapping prestressed basalt fibers around the outer layer of the glued bamboo in the core area. Since the glued bamboo is made of bamboo strips glued together, defects such as bamboo nodes in the bamboo strips are the weak points of the glued bamboo components, which are prone to premature damage under load and cause overall failure of the components. The constraint provided by basalt fibers can limit the development of micro cracks in the core area, thereby significantly improving the strength and stiffness of the glued bamboo components.

[0025] In practical engineering applications, higher strength means that the components can withstand greater loads, increasing the stability and safety of the structure. For example, in building structures, the use of such glued bamboo components can reduce the size and number of components, improve space utilization, and reduce engineering costs.

[0026] The basalt fiber in the basalt fiber reinforced high-strength fire-resistant glued bamboo components has good high temperature resistance and flame retardant properties, which can prevent the flame from spreading to the core glued bamboo part in the event of a fire, ensuring the fire safety of the structure.

[0027] Basalt fiber does not burn at high temperatures and does not produce toxic gases. It can effectively isolate the fire source and delay the spread of fire. This provides valuable time for escape and rescue in a building fire. In addition, the fire resistance of this glued bamboo component can also reduce the cost of repair after a fire. Compared with traditional steel and wooden structures, basalt fiber-reinforced glued bamboo components are less damaged after a fire and are easier to repair and replace.

[0028] At the same time, the reinforcement of basalt fiber can transform glued bamboo from a combustible or flame-retardant material to a non-combustible material, and its strong fire-resistant performance further expands the scope of use of the material.

[0029] The glued bamboo component has the advantage of low production cost. As a natural material, bamboo grows quickly, is abundant in resources and relatively cheap. Compared with traditional steel and concrete, the production cost of bamboo can be much lower. At the same time, the production cost of basalt fiber is also gradually decreasing, and with the continuous advancement of production technology, its price is expected to fall further.

[0030] In the production process, the process of gluing bamboo components is relatively simple, and does not require complex equipment and processes. In the process of its production, only a simple structure and low-cost tensioning device is needed. Compared with traditional steel and concrete structures, the production efficiency is higher, which can greatly shorten the construction period and reduce the project cost. In addition, bamboo is an environmentally friendly and renewable material that meets the requirements of sustainable development and will not pollute the environment.

[0031] Environmental protection and renewability are one of the important themes of today's social development. Basalt fiber reinforced high-strength fire-resistant glued bamboo components just meet this requirement. Bamboo is a natural renewable resource that grows quickly and can be harvested and renewed every year. Compared with wood, bamboo has a shorter growth cycle and more abundant resources.

[0032] Basalt fiber is also an environmentally friendly material. It is made of natural basalt ore through high-temperature melting, drawing and other processes. No harmful substances are produced during the production process, and it does not pollute the environment. At the same time, basalt fiber has good durability and corrosion resistance, long service life, and can reduce material waste and environmental impact.

[0033] In future engineering construction, this type of glued bamboo component can be widely used in the fields of building structure, bridge engineering, garden landscape, etc. For example, in building structure, glued bamboo components can be used to make beams, columns, floor slabs and other components to improve the green environmental protection performance of the building; in bridge engineering, glued bamboo components can be used to make the main beam and bridge deck of the bridge to reduce the dead weight of the bridge and improve the bearing capacity of the bridge; in garden landscape, glued bamboo components can be used to make pavilions, flower stands and other landscape facilities to increase the natural beauty of the garden. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The invention relates to a structural schematic diagram of a basalt fiber reinforced high-strength fire-resistant glued bamboo component.

[0035] Figure 2 The invention relates to a process diagram of a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component.

[0036] Figure 3 The present invention relates to a schematic diagram of a tensioning state in a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component (excluding a positioning component).

[0037] Figure 4 The invention relates to a structural schematic diagram of a tensioning member used in a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo member.

[0038] Figure 5 The present invention relates to a schematic diagram of the tensioning state in a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component (including a positioning component).

[0039] Figure 6 The invention relates to a structural schematic diagram of a positioning component used in a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component.

[0040] In the figure

[0041] 1. Surface flat-pressed bamboo strips; 2. Glued bamboo in the core area; 3. Surface side-pressed bamboo strips; 4. Basalt fiber cloth; 5. Tensioning member; 5-1. Upper splint; 5-2. Lower splint; 5-3. Anchor hole; 5-4. Rotating shaft; 5-5. Locking hole; 5-6. Locking bolt; 5-7. Locking nut; 5-8. Tensioning anchor; 6. Self-tapping screw; 7. Tensioning bolt; 8. Tensioning nut; 9. Positioning member; 9-1. Adhesion plate; 9-2. Support plate; 9-3. Shielding part; 9-4. First rotating wheel; 9-5. Second rotating wheel; 9-6. Indicating wheel; 9-7. Indicating mark; 10. First positioning pin; 11. Second positioning pin; 12. Elastic pull line. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0044] Embodiment 1:

[0045] like Figure 1 As shown, a basalt fiber reinforced high-strength fire-resistant glued bamboo component includes a core glued bamboo 2 and a basalt fiber cloth 4. The basalt fiber cloth 4 is wrapped around and constrains the core glued bamboo 2, and the basalt fiber cloth 4 is applied with prestress.

[0046] The basalt fiber reinforced high-strength fire-resistant glued bamboo component provided in this embodiment has the following advantages:

[0047] The high-strength fire-resistant glued bamboo components reinforced with basalt fibers are effectively constrained in the core area of ​​the glued bamboo components by wrapping prestressed basalt fibers around the outer layer of the glued bamboo in the core area. Since the glued bamboo is made of bamboo strips glued together, defects such as bamboo nodes in the bamboo strips are the weak points of the glued bamboo components, which are prone to premature damage under load and cause overall failure of the components. The constraint provided by basalt fibers can limit the development of micro cracks in the core area, thereby significantly improving the strength and stiffness of the glued bamboo components.

[0048] In practical engineering applications, higher strength means that the components can withstand greater loads, increasing the stability and safety of the structure. For example, in building structures, the use of such glued bamboo components can reduce the size and number of components, improve space utilization, and reduce engineering costs.

[0049] The basalt fiber in the basalt fiber reinforced high-strength fire-resistant glued bamboo components has good high temperature resistance and flame retardant properties, which can prevent the flame from spreading to the core area of ​​the glued bamboo 2 parts under fire, ensuring the fire safety of the structure.

[0050] Basalt fiber does not burn at high temperatures and does not produce toxic gases. It can effectively isolate the fire source and delay the spread of fire. This provides valuable time for escape and rescue in a building fire. In addition, the fire resistance of this glued bamboo component can also reduce the cost of repair after a fire. Compared with traditional steel and wooden structures, basalt fiber-reinforced glued bamboo components are less damaged after a fire and are easier to repair and replace.

[0051] At the same time, the reinforcement of basalt fiber can transform glued bamboo from a combustible or flame-retardant material to a non-combustible material, and its strong fire-resistant performance further expands the scope of use of the material.

[0052] The glued bamboo component has the advantage of low production cost. As a natural material, bamboo grows quickly, is abundant in resources and relatively cheap. Compared with traditional steel and concrete, the production cost of bamboo can be much lower. At the same time, the production cost of basalt fiber is also gradually decreasing, and with the continuous advancement of production technology, its price is expected to fall further.

[0053] In the production process, the process of gluing bamboo components is relatively simple, and does not require complex equipment and processes. In the process of its production, only a simple structure and low-cost tensioning device is needed. Compared with traditional steel and concrete structures, the production efficiency is higher, which can greatly shorten the construction period and reduce the project cost. In addition, bamboo is an environmentally friendly and renewable material that meets the requirements of sustainable development and will not pollute the environment.

[0054] Environmental protection and renewability are one of the important themes of today's social development. Basalt fiber reinforced high-strength fire-resistant glued bamboo components just meet this requirement. Bamboo is a natural renewable resource that grows quickly and can be harvested and renewed every year. Compared with wood, bamboo has a shorter growth cycle and more abundant resources.

[0055] Basalt fiber is also an environmentally friendly material. It is made of natural basalt ore through high-temperature melting, drawing and other processes. No harmful substances are produced during the production process, and it does not pollute the environment. At the same time, basalt fiber has good durability and corrosion resistance, long service life, and can reduce material waste and environmental impact.

[0056] In future engineering construction, this type of glued bamboo component can be widely used in the fields of building structure, bridge engineering, garden landscape, etc. For example, in building structure, glued bamboo components can be used to make beams, columns, floor slabs and other components to improve the green environmental protection performance of the building; in bridge engineering, glued bamboo components can be used to make the main beam and bridge deck of the bridge to reduce the dead weight of the bridge and improve the bearing capacity of the bridge; in garden landscape, glued bamboo components can be used to make pavilions, flower stands and other landscape facilities to increase the natural beauty of the garden.

[0057] The test results show that compared with unreinforced glued bamboo components, the basalt fiber reinforced high-strength fire-resistant glued bamboo components have significantly improved flexural strength, elastic modulus, compressive strength and fire resistance, with an enhancement rate of 16.3% to 104.3%. At the same time, the immersion peeling rate of the basalt fiber reinforced high-strength fire-resistant glued bamboo components is 0, indicating that the present invention has good environmental adaptability and stability.

[0058]

[0059]

[0060] When the basalt fiber cloth 4 is wound and restrained on the core-region glued bamboo 2, the initial prestress level applied is 30%, and the prestress level is the ratio of the tension force to the ultimate tensile stress.

[0061] First, the 30% prestress level is reasonably designed to effectively improve the mechanical properties of the component without causing premature damage to the basalt fiber cloth 4 due to excessive stress during construction or use. Under this prestress, the fiber cloth exerts uniform annular pressure on the core area of ​​the glued bamboo 2, limiting the generation and expansion of microcracks inside the glued bamboo. When the component is subjected to external loads, the presence of prestress enables the fiber cloth to play a reinforcing role earlier, improving the overall stiffness and bearing capacity of the component.

[0062] Secondly, this prestressing level helps to improve the ductility of the component. When the component deforms under load, the prestressed fiber cloth can restrain the lateral expansion of the glued bamboo, so that the component can still maintain a certain bearing capacity under large deformation and avoid sudden failure.

[0063] In addition, the 30% prestressing level also takes into account the feasibility and economy of actual construction. Too high a prestressing force may require more complex construction equipment and processes, increasing costs and construction difficulties. However, 30% prestressing force facilitates construction operations while ensuring performance improvement, which is conducive to the promotion and application of this technology in actual projects.

[0064] The basalt fiber reinforced high-strength fire-resistant glued bamboo component of the present embodiment further includes a surface glued bamboo veneer, and the surface glued bamboo veneer is arranged on the outer side of the basalt fiber cloth 4.

[0065] From an aesthetic point of view, the surface glued bamboo veneer maintains the natural appearance of bamboo, showing the unique texture and color of bamboo, giving people a fresh and natural beauty. Whether in building structures or other engineering applications, it can better integrate into the surrounding environment and enhance the overall visual effect. Compared with traditional building materials, the appearance of bamboo is more distinctive and artistic, providing designers with more creative space.

[0066] In terms of function, the surface laminated bamboo veneer protects the internal basalt fiber cloth 4 and the core laminated bamboo 2. It can prevent external environmental factors such as ultraviolet rays, rain, dust, etc. from eroding the internal structure and extend the service life of the component. At the same time, the veneer can also enhance the overall stability of the component to a certain extent and reduce deformation caused by external impact or temperature change.

[0067] In addition, the presence of the surface glued bamboo veneer also facilitates subsequent maintenance and upkeep. If there is slight damage or stain on the surface of the component, it can be repaired and cleaned more easily to maintain the good appearance and performance of the component. It also provides a better foundation for the painting and waterproofing of the component, further improving the durability and applicability of the component.

[0068] Embodiment 2:

[0069] like Figures 1 to 6As shown, a method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component comprises the following steps:

[0070] Step 1: Prepare the core area glued bamboo 2;

[0071] Step 2: After gluing the basalt fiber cloth 4, the basalt fiber cloth 4 is wound around the core area glued bamboo 2;

[0072] Step 3: tensioning the basalt fiber cloth 4, wherein the initial prestressing level of the tensioning is set to 30%, and the prestressing level is the ratio of the tensioning force to the ultimate tensile stress;

[0073] Step 4: hot pressing the core-area glued bamboo 2 wrapped by the basalt fiber cloth 4, with the hot pressing conditions set to 130°C and 1.2MPa, to achieve connection between the basalt fiber and the core-area glued bamboo 2.

[0074] The specific operation process of step 1 includes: drying the bamboo strips to a moisture content of 8%-12%, planing the surface, applying 250g / m2 glue on both sides 2 , side pressing and assembling are performed, and side pressing veneers are formed under hot pressing at a temperature of 130°C and a pressure of 1.2MPa. The side pressing veneers are glued and assembled, and hot pressed again to form the core area glued bamboo 2.

[0075] Furthermore, the specific operation process of step 1 is as follows: select bamboo strips with a bamboo age of 3-5 years and a density of 0.6-0.7g / cm3 and dry them to a moisture content of 8%-12%, slice the surface to a cross-sectional size of 20mm×6mm, and apply phenolic resin glue 250g / m3 on both sides. 2 , side pressing assembly is carried out, and the side pressed veneer is formed under hot pressing at a temperature of 130°C and a pressure of 1.2MPa for 100s. The side pressed veneer is glued and assembled, and the glue here is epoxy resin adhesive, and then hot pressed again to form the core area glued bamboo.

[0076] The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component of the present embodiment further comprises the steps of: chamfering the edges and corners of the glued bamboo 2 in the core area to facilitate the tight winding of the basalt fiber cloth 4 .

[0077] The step 2 specifically includes: cutting the basalt fiber cloth 4 according to the circumference of the core area glued bamboo 2, boiling it in a 20g / kg washing powder boiling water solution for 3 hours, and soaking it in a 1.5% concentration silane coupling agent KH550 solution for 15 minutes after drying, so as to increase the roughness of the basalt fiber surface and improve its interface bonding performance, and drying it again, and then applying glue (phenolic resin adhesive, 250g / m2) to the basalt fiber cloth 4, and then winding the basalt fiber cloth 4 on the core area glued bamboo 2. The 1.5% concentration coupling agent treatment can best improve the roughness of the basalt fiber surface, increase the surface area of ​​the fiber, and is conducive to the mechanical interlocking effect of the resin in the surface micropores of the glass fiber, thereby enhancing the integrity of the glued bamboo.

[0078] In the preparation method of a basalt fiber reinforced high-strength fire-resistant glued bamboo component of this embodiment, the operation process of step 1 also includes: drying the bamboo strips to a moisture content of 8%-12%, and after the surface is sliced, applying 250g / m2 of glue on both sides. 2 , and side pressing and flat pressing are respectively performed to form side pressed veneers and flat pressed veneers under hot pressing at a temperature of 130°C and a pressure of 1.2MPa; and also includes step five: applying glue on the outside of the basalt fiber reinforced glued bamboo, and using the side pressed veneer and flat pressed veneer for surface covering, forming a basalt fiber reinforced glued bamboo component product by hot pressing, and covering the surface to cover the basalt fiber cloth 4 to retain the original appearance and texture of the glued bamboo.

[0079] The specific operation process of step 1 is as follows: select bamboo strips with a bamboo age of 3-5 years and a density of 0.6-0.7g / cm3, dry them to a moisture content of 8%-12%, slice the surface to a cross-sectional size of 20mm×6mm, and apply phenolic resin glue 250g / m3 on both sides. 2 , side pressing assembly and flat pressing assembly are performed respectively, under hot pressing at a temperature of 130°C and a pressure of 1.2MPa for 100s to form side pressing veneers and flat pressing veneers respectively.

[0080] In the step 3, the basalt fiber cloth 4 is tensioned using a tensioning device, which includes two tensioning components 5, and the tensioning components 5 include an upper clamping plate 5-1, a lower clamping plate 5-2, a rotating shaft 5-4, a locking bolt 5-6, a locking nut 5-7, a tensioning anchor 5-8, a self-tapping screw 6, a tensioning bolt 7 and a tensioning nut 8. One end of the upper clamping plate 5-1 and the lower clamping plate 5-2 are rotatably connected through the rotating shaft 5-4, and the other end of the upper clamping plate 5-1 and the lower clamping plate 5-2 are respectively provided with a locking hole 5-5, and the locking bolt 5-6 passes through the locking hole 5-5 and cooperates with the locking nut 5-7. There is an anchor hole 5-3, the tension anchor 5-8 is arranged on the upper clamp plate 5-1, the tension bolt 7 passes through the tension anchor 5-8 of the two tension members 5, and cooperates with the tension nut 8; when tensioning, one tension member 5 clamps one side edge of the basalt fiber cloth 4, and the other tension member 5 clamps the other side edge of the basalt fiber cloth 4, the self-tapping screw 6 passes through the anchor hole 5-3 of one tension member 5 and is inserted into the core area glued bamboo 2, and then tensioning is performed by rotating the tension bolt 7. In this embodiment, the ratio of the telescopic length s of the tension bolt 7 to the circumference c of the core area glued bamboo 2 is adjusted to 0.3.

[0081] In the above structural setting, one end of the upper clamping plate 5-1 and the lower clamping plate 5-2 of the two tensioning members 5 are rotatably connected by the rotating shaft 5-4 to facilitate the opening and closing operation. The other end is clamped by the locking bolt 5-6 and the locking nut 5-7. The anchor hole 5-3 on the lower clamping plate 5-2 is used to insert the self-tapping screw 6 to fix a tensioning member 5 on the core area glued bamboo 2. The tensioning bolt 7 passes through the tensioning anchors 5-8 of the two tensioning members 5, and the tensioning bolt 7 is extended by rotating the tensioning nut 8, thereby tensioning the basalt fiber cloth 4 clamped between the two tensioning members 5. By adjusting the ratio of the telescopic length s of the tensioning bolt 7 to the circumference c of the core area glued bamboo 2 to 0.3, it is ensured that the required 30% initial prestress level is achieved.

[0082] The advantages of this arrangement are: first, the device can accurately control the tensioning degree of the basalt fiber cloth 4, ensure the accuracy and stability of the prestress level, and thus improve the mechanical properties of the component. Secondly, the operation is relatively simple, and the effective tensioning of the fiber cloth is achieved through a simple mechanical structure, which reduces the difficulty of construction. Furthermore, it can be reused, which improves the utilization rate of the equipment and reduces costs. Finally, the clamping and anchoring structure of the device can ensure that the fiber cloth will not slip during the tensioning process, ensuring construction safety and quality.

[0083] The tensioning device also includes a positioning component, which includes a plurality of positioning members 9 and positioning members. The positioning member 9 includes an adhesion seat, a first rotating wheel 9-4, a second rotating wheel 9-5 and an indicating wheel 9-6. The adhesion seat includes an adhesion plate 9-1 and a support plate 9-2. The support plate 9-2 is arranged on the adhesion plate 9-1. A shielding portion 9-3 is provided on the support plate 9-2. The first rotating wheel 9-4, the second rotating wheel 9-5 and the indicating wheel 9-6 are arranged on the shielding portion 9-3. The circumferences of the first rotating wheel 9-4 and the second rotating wheel 9-5 fit each other and rotate together. The radius of the second rotating wheel 9-5 is 2-4 times the radius of the first rotating wheel 9-4. The first rotating wheel 9-4 and the indicating wheel 9-6 are coaxially arranged. An indicating mark 9-7 is provided on the indicating wheel 9-6. When the indicating wheel 9-6 rotates, the indicating mark 9-7 has a 9-3 is in the state of shielding or non-shielding, the positioning component includes a first positioning pin 10, a second positioning pin 11 and an elastic pull wire 12, and the two ends of the elastic pull wire 12 are respectively connected to the first positioning pin 10 and the second positioning pin 11; when tensioning, the positioning component 9 is provided on at least one side of the basalt fiber cloth 4, the first positioning pin 10 and the second positioning pin 11 are provided on both sides of the side of the basalt fiber cloth 4, and a plurality of the positioning components 9 are evenly distributed between the first positioning pin 10 and the second positioning pin 11, the adhesion plate 9-1 is adhered to the surface of the basalt fiber cloth 4, and the circumference of the second rotating wheel 9-5 contacts the elastic pull wire 12. When the second rotating wheel 9-5 and the elastic pull wire 12 move relative to each other, the second rotating wheel 9-5 rotates. When the indicator mark 9-7 is blocked by the shielding portion 9-3, it indicates that the tensioning process of the basalt fiber cloth 4 is uneven.

[0084] The positioning component can accurately detect whether the tension deformation at each position is uniform during the tensioning process of the basalt fiber cloth 4. If unevenness occurs during the tensioning process, it means that there may be a jam, which will lead to unequal stress at various locations of the basalt fiber cloth 4 after tensioning, seriously affecting the mechanical properties and stability of the glued bamboo component. The positioning component can detect this uneven deformation in time, providing a basis for construction personnel to make adjustments, avoiding material waste and rework costs caused by quality problems.

[0085] This component enables convenient identification of the uniformity of the basalt fiber cloth 4 tensioning deformation. No complicated equipment and operation are required, and it can be judged by observing the status of the indicator mark 9-7, which greatly improves the construction efficiency and reduces the difficulty and time cost of manual inspection. At the same time, it can also play an early warning role in the tensioning process. Once the indicator mark 9-7 is blocked, the construction personnel can immediately stop the tensioning operation and check the problem, effectively avoiding more serious quality problems caused by continued tensioning.

[0086] In addition, multiple positioning components 9 are evenly distributed between the first positioning pin 10 and the second positioning pin 11, which can comprehensively monitor different positions of the fiber cloth, improve the precision and accuracy of the detection, and ensure the quality consistency of the glued bamboo components. Moreover, the positioning components are highly applicable and suitable for the tensioning process detection of basalt fiber cloth 4 of different sizes and shapes. They can be flexibly arranged according to actual needs to achieve effective monitoring of the tensioning process. Most importantly, by ensuring the uniformity of tensioning, the safety of the glued bamboo components is improved, potential safety hazards are reduced, and the safe operation of the project is guaranteed.

[0087] The positioning assembly is mainly composed of a plurality of positioning components 9 and positioning components. The adhesive seat in the positioning component 9 includes an adhesive plate 9-1 and a support plate 9-2. The adhesive plate 9-1 can be firmly adhered to the surface of the basalt fiber cloth 4 to ensure that the positioning component 9 maintains a relatively stable position with the fiber cloth during the tensioning process. The shielding portion 9-3 on the support plate 9-2 is used to determine the state of the indicator mark 9-7 on the indicator wheel 9-6.

[0088] The circumferences of the first rotating wheel 9-4 and the second rotating wheel 9-5 fit each other and rotate together. The radius of the second rotating wheel 9-5 is 2-4 times the radius of the first rotating wheel 9-4. This design enables the rotation of the second rotating wheel 9-5 to drive the first rotating wheel 9-4 to rotate through the transmission ratio. The first rotating wheel 9-4 is coaxially arranged with the indicating wheel 9-6. When the second rotating wheel 9-5 rotates due to relative motion with the elastic pull line 12, it will drive the first rotating wheel 9-4 and the indicating wheel 9-6 to rotate in turn. During the rotation process, the indicating mark 9-7 on the indicating wheel 9-6 determines whether the tensioning process of the basalt fiber cloth 4 is uniform according to whether it is blocked by the blocking part 9-3.

[0089] The positioning components include a first positioning pin 10, a second positioning pin 11 and an elastic pull wire 12. During tensioning, the first positioning pin 10 and the second positioning pin 11 are arranged on both sides of the side of the basalt fiber cloth 4, and a plurality of positioning components 9 are evenly distributed therebetween. The two ends of the elastic pull wire 12 are respectively connected to the first positioning pin 10 and the second positioning pin 11. Under normal tensioning conditions, the deformation of the basalt fiber cloth 4 should be uniform at all locations, and at this time, there will be no relative movement between the elastic pull wire 12 and the second rotating wheel 9-5. However, when the basalt fiber cloth 4 undergoes uneven deformation, due to the different tensioning degrees at different positions, the moving speed of the fiber cloth at some locations will be inconsistent with the stretching or contraction speed of the elastic pull wire 12, thereby causing relative movement between the elastic pull wire 12 and the second rotating wheel 9-5. This relative movement causes the second rotating wheel 9-5 to rotate, which in turn drives the first rotating wheel 9-4 and the indicating wheel 9-6 to rotate, causing the state of the indicating mark 9-7 to change. When the indicating mark 9-7 is blocked by the blocking portion 9-3, it indicates that the tensioning process of the basalt fiber cloth 4 is uneven.

[0090] In order to effectively ensure that the elastic pull wire 12 can cooperate with the second rotating wheel 9-5, the circumference of the second rotating wheel 9-5 can be connected to the elastic pull wire 12 by an elastic material. Both the elastic pull wire 12 and the elastic material can be made of silicone.

[0091] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0092] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A basalt fiber reinforced high-strength fire-resistant glued bamboo component, characterized in that: The invention comprises a core-area glued bamboo and a basalt fiber cloth, wherein the basalt fiber cloth is wound around and constrains the core-area glued bamboo, and the basalt fiber cloth is applied with prestress.

2. The basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 1, characterized in that: When the basalt fiber cloth is wound and restrained on the core-area glued bamboo, the initial prestress level applied is 30%, and the prestress level is the ratio of the tension force to the ultimate tensile stress.

3. The basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 1, characterized in that: It also includes a surface glued bamboo veneer, and the surface glued bamboo veneer is arranged on the outer side of the basalt fiber cloth.

4. A method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component, characterized in that: The steps include: Step 1: Prepare the core area glued bamboo; Step 2: After gluing the basalt fiber cloth, wrap the basalt fiber cloth around the glued bamboo in the core area; Step 3: tensioning the basalt fiber cloth, the initial prestressing level of the tensioning is set to 30%, and the prestressing level is the ratio of the tensioning force to the ultimate tensile stress; Step 4: hot-press the core-area glued bamboo wrapped with basalt fiber cloth to achieve the connection between the basalt fiber and the core-area glued bamboo.

5. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 4, characterized in that: The specific operation process of step 1 includes: drying the bamboo strips to a moisture content of 8%-12%, planing the surface, applying 250g / m2 glue on both sides 2 , side pressing is carried out to assemble the blanks, and side pressing veneer is formed under hot pressing at a temperature of 130°C and a pressure of 1.2MPa. The side pressing veneer is glued and assembled, and hot pressed again to form the core area glued bamboo.

6. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 5, characterized in that: The method also includes the step of chamfering the edges and corners of the glued bamboo in the core area.

7. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 4, characterized in that: The step 2 specifically includes: cutting the basalt fiber cloth according to the circumference of the core area glued bamboo, boiling it in a 20g / kg washing powder boiling water solution for 3 hours, and soaking it in a 1.5% concentration silane coupling agent KH550 solution for 15 minutes after drying, and drying it again, and then applying glue to the basalt fiber cloth, and then winding the basalt fiber cloth on the core area glued bamboo.

8. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 5, characterized in that: The operation process of step 1 also includes: drying the bamboo strips to a moisture content of 8%-12%, planing the surface, applying 250g / m2 glue on both sides 2 , and side pressing and flat pressing are respectively performed to form side pressed veneers and flat pressed veneers under hot pressing at a temperature of 130°C and a pressure of 1.2MPa; it also includes step five: applying glue on the outside of the basalt fiber reinforced glued bamboo, and using the side pressed veneer and flat pressed veneer for surface covering, and forming a finished basalt fiber reinforced glued bamboo component by hot pressing.

9. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 4, characterized in that: In the step 3, the basalt fiber cloth is tensioned using a tensioning device, which includes two tensioning components, and the tensioning components include an upper clamping plate, a lower clamping plate, a rotating shaft, a locking bolt, a locking nut, a tensioning anchor, a self-tapping screw, a tensioning bolt and a tensioning nut. One end of the upper clamping plate and the lower clamping plate are rotatably connected through the rotating shaft, and the other end of the upper clamping plate and the lower clamping plate are respectively provided with a locking hole, the locking bolt passes through the locking hole and cooperates with the locking nut, the lower clamping plate is provided with an anchor hole, and the tensioning anchor is provided on the upper clamping plate, and the tensioning bolt passes through the tensioning anchors of the two tensioning components and cooperates with the tensioning nut; when tensioning, one of the tensioning components clamps one side edge of the basalt fiber cloth, and the other tensioning component clamps the other side edge of the basalt fiber cloth, the self-tapping screw passes through the anchor hole of one of the tensioning components and is inserted into the core area glued bamboo, and then tensioning is performed by rotating the tensioning bolt.

10. The method for preparing a basalt fiber reinforced high-strength fire-resistant glued bamboo component according to claim 9, characterized in that: The tensioning device also includes a positioning assembly, the positioning assembly includes a plurality of positioning components and a positioning component, the positioning component includes an adhesion seat, a first rotating wheel, a second rotating wheel and an indicating wheel, the adhesion seat includes an adhesion plate and a support plate, the support plate is arranged on the adhesion plate, a shielding portion is provided on the support plate, the first rotating wheel, the second rotating wheel and the indicating wheel are arranged on the shielding portion, the circumferences of the first rotating wheel and the second rotating wheel fit each other and rotate together, the radius of the second rotating wheel is 2-4 times the radius of the first rotating wheel, the first rotating wheel and the indicating wheel are coaxially arranged, an indicating mark is provided on the indicating wheel, and during the rotation of the indicating wheel, the indicating mark has a state of being blocked or not blocked by the shielding portion, The positioning component includes a first positioning pin, a second positioning pin and an elastic pull wire, and the two ends of the elastic pull wire are respectively connected to the first positioning pin and the second positioning pin; when tensioning is performed, the positioning component is provided on at least one side of the basalt fiber cloth, the first positioning pin and the second positioning pin are provided on both sides of the side of the basalt fiber cloth, and a plurality of the positioning components are evenly distributed between the first positioning pin and the second positioning pin, the adhesion plate is adhered to the surface of the basalt fiber cloth, and the circumference of the second rotating wheel contacts the elastic pull wire, when the second rotating wheel and the elastic pull wire move relative to each other, the second rotating wheel rotates, and when the indicator mark is blocked by the shielding portion, it indicates that the tensioning process of the basalt fiber cloth is uneven.

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