CN101725211A - Fiber-reinforced bamboo-based engineering member - Google Patents
Fiber-reinforced bamboo-based engineering member Download PDFInfo
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- CN101725211A CN101725211A CN200910232786A CN200910232786A CN101725211A CN 101725211 A CN101725211 A CN 101725211A CN 200910232786 A CN200910232786 A CN 200910232786A CN 200910232786 A CN200910232786 A CN 200910232786A CN 101725211 A CN101725211 A CN 101725211A
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Abstract
The invention provides a fiber-reinforced bamboo-based engineering member, which is formed by pressing a bamboo (1), fiber reinforcements (2), an impregnating adhesive (31) and an interface adhesive (32). The fiber reinforcements (2) are arranged in the bamboo (1) and wrapped by the bamboo (1) and provided with a protective layer with a thickness of c; the directions of the fiber reinforcements (2) are parallel to the axial direction of the member and are intensively arranged in a tensile region or a compressive region of a section; the dipping adhesive (31) is dipped in the bamboo (1); and the interface adhesive (32) is painted on the surfaces of the fiber reinforcements (2) to form a reliable interface between the fiber reinforcements (2) and the bamboo (1). The fiber-reinforced bamboo-based engineering member overcomes the defect of known bamboo members, and can greatly improve the rigidity of the conventional bamboo member, improve adverse conditions on the rigidity control design of the conventional bamboo member and create conditions for the popularization and application of the bamboo as a main stressed member in the field of building and civil engineering structures.
Description
Technical field
The present invention relates to a kind of compound bamboo member, especially a kind of fiber-reinforced bamboo-based engineering member can be widely used in each class A of geometric unitA in civil engineering structure field.
Background technology
At present, China's building structure great majority are to adopt brick mix structure and reinforced concrete structure, use a large amount of clay-ware and cement, have both consumed a large amount of limestone resources, have damaged the good farmland, produce a large amount of carbon dioxide again, have destroyed ecological environment; Simultaneously, also there is certain deficiency brick mix structure and reinforced concrete structure in itself, the relatively poor anti-seismic performance of brick mix structure for example, the concrete structure member size is big, from great, cracking resistance is poor, poor durability, repairs or remove difficulty etc.
For keeping sustainable economic development, reduce the degree of dependence of building to cement, the land resources of saves valuable, make full use of renewable resource as constructional materials, progressively change existing architecture structure form, wooden construction and bamboo structure have obtained people's attention gradually, but the China's Forest Resources scarcity, the timber regeneration period is long, and the application of wooden construction has been subjected to serious restriction." wood substituted by bamboo ", the engineering structures of utilizing modern bamboo matter engineering material compound, that recombinant technique is made to build has the similar superior function of wooden construction, and it has outstanding advantage aspect ecological property, heat preservation energy-saving, anti-seismic performance and construction and the industrialization; But, in the application process of bamboo structure, find, have following problem: (1) modulus of elasticity is low, the design of flexural member all is rigidity control usually, cause the lower rate of utilization of strength of material (for example: the ultimate bearing capacity that the bamboo beam checks by China's " Code for design of timber structures " amount of deflection approximately be by the strength checking ultimate bearing capacity 1/5); (2) bamboo wood tensile strength is relatively low, and neutral axis is near the axis of symmetry of cross section, and high compression strength can not get sufficient embodiment; (3) mechanical property is more discrete, often destroys in advance owing to local defect; (4) failure mode is more crisp, and it is ofer short duration to destroy generating process, does not conform to the demand of structural element to ductile reinforced member.
Mechanical property how to improve and improve bamboo matter member is that it uses the difficult problem that must face in field of civil engineering, as No. " 98228210.9 ", Chinese patent, a kind of " a kind of steel bamboo composite plate " disclosed, provide by wire lath and be clipped in the middle a kind of bamboo composite plate of bamboo board, can be applied to car and boat template, construction formwork, clad plate etc., but this technology only limits to the making and the application of sheet material, there is the corrosion problem in wire lath itself, and changed the original easy processing technology of bamboo clappers, be difficult to be applied to other primary structure member of structure.
The fiber muscle is after being glued together by base material by the multiply continuous fiber, pushes and move with the hand the compound muscle of moulding through special mould again.Difference according to kinds of fibers, carbon fibre bar, basalt fibre muscle, glass fiber muscle, aramid fiber reinforced plastic bars and assorted fibre muscle etc. are arranged, profile has light circle, sandblast, indentation, screw thread etc. multi-form, general 3mm～the 40mm of diameter, good characteristics such as it has that tensile strength height, density are little, corrosion-resistant, endurance, nonmagnetic, easy processing have obtained research widely at home and abroad and have used.
Summary of the invention
The purpose of this invention is to provide a kind of compound bamboo member that can be widely used in the civil engineering structure field, especially a kind of fiber-reinforced bamboo-based engineering member, overcome the deficiency of existing bamboo matter member, be widely used in making building, the isostructural main bearing member of bridge, comprise beam, post, plate and truss etc.
For this reason, the invention provides a kind of fiber-reinforced bamboo-based engineering member, mainly, be pressed into fiber-reinforced bamboo-based engineering member jointly by bamboo wood, fiber muscle, dipping glue and interface glue four parts.
In this member, the fiber muscle places bamboo wood inside, by bamboo wood is wrapped up, and has certain thickness topping; Fiber muscle direction and members shaft line parallel, centralized configuration is born tensile stress and compressive stress respectively at the tensile region or the pressure zone in cross section, and improves the rigidity of whole member, is equivalent to the main muscle in traditional reinforced concrete member; Simultaneously, the ductility of fiber muscle guarantees the enough deformabilities of member.
Bamboo wood can be thin bamboo strips used for weaving or bamboo tow.Thin bamboo strips used for weaving thickness is 0.8mm～1.2mm, and width is 10mm～20mm, and length can change as required; The bamboo tow with bamboo wood discongest into elongated, be cross-linked with each other and keep the loose reticular fibre bundle of the original arrangement mode of fiber; The moisture content of bamboo wood should be controlled at below 15%.
The type of fiber muscle can be carbon fibre bar, basalt fibre muscle, glass fiber muscle, aramid fiber reinforced plastic bars and assorted fibre muscle etc., to flexural members such as beam, plates, the carbon fibre bar that can select high elastic modulus for use is to guarantee to provide enough rigidity, eccentric compressed member such as coupled columns, pier can select for use the bigger basalt fibre muscle of limiting strain, glass fiber muscle etc. to guarantee the higher lateral deformation ability of member.Be to guarantee the adhesive property between fiber muscle and the bamboo wood, the fiber muscle can adopt through blasting treatment or indentation and handle or coarse format surface such as threaded.
The form of reinforcement of this member can be a cross section with single reinforcement, also can be doubly reinforced section.During cross section with single reinforcement, fiber muscle centralized configuration is in the tensile region, and only the tensile region of pair cross-section strengthens; During doubly reinforced section, centralized configuration is at tensile region and pressure zone simultaneously for the fiber muscle, and the tensile region of pair cross-section and pressure zone strengthen simultaneously.
The cross-sectional configuration form of this member mainly contains: a) square-section, b) T type cross section, c) I-shaped cross-section.In the square-section, member section is a rectangle, and the fiber muscle is arranged in bottom, cross section or while and top; T type cross section is made of jointly web and top flange plate, and top flange plate is positioned at the upper portion pressurized district, and the fiber muscle is arranged in web bottom or while and top flange plate top; The I-shaped cross-section is made up of web, bottom wing listrium and top flange plate, and the fiber muscle is arranged in bottom wing listrium bottom or while and top flange plate top.
The manufacturing of the fiber-reinforced bamboo-based engineering member of square-section may further comprise the steps: at first carry out the preparation of bamboo material, subsequently, to flood glue impregnated in the bamboo wood, and carry out drying and handle, simultaneously, interface glue is evenly coated on fiber muscle surface, again according to sectional position, fiber muscle place to bamboo wood and fiber muscle assembly, at last, carry out hot pressing and post-production moulding.
During compacting, should be according to the total consumption of neutralizing target density calculation bamboo wood, the vertical position of fiber muscle is controlled by the upper and lower bamboo wood consumption of fiber muscle, and fiber muscle horizontal level takes the thin bamboo strips used for weaving of the perpendicular setting of colligation at a certain distance to position, and neutralizing target density is got 1.0～1.1g/cm
3, press temperature is got 135～150 ℃, and pressure is got 5.5～6.0N/mm
2, carry out sawing machine-shaping according to design after compacting is finished.
For T section, I-shaped cross-section, combine by two and above simple rectangular section, during combination, the bonding interface of seam should guarantee the requirement of clean and driving fit, carry out superimposed pressurization, adopt following seam construction to increase the bonding interface surface area: (1) concavo-convex stairstepping seam to strengthen respectively forming the connection in cross section; (2) zigzag seam; (3) waveform seam.Seam construction is provided with along the breadth of section direction.
The present invention has overcome the defective of known bamboo member, has following distinguishing feature: (1) has improved the rigidity of original bamboo member significantly, improves the unfavorable situation of its rigidity control design; (2) the fiber muscle is configured in inside, cross section, and especially fiber muscle advantages of higher tensile strength and bamboo wood high compression strength can be given full play in the tensile region, and the two mechanical property complementation improves the bamboo bearing of component greatly, and the theory of computation is simply clear and definite; (3) configuration of fiber muscle improves the discrete failure mode that reaches fragility of former bamboo member mechanical property largely, and need not the production technology of the former bamboo member of bigger change; (4) member of the present invention does not change the original associated advantages of bamboo member, as: ecological property, easily process, be easy to suitability for industrialized production etc.; (5) the bamboo power of regeneration is strong, and growth cycle is short, and environmental protection and energy saving meet China's STRATEGIES OF SUSTAINABLE DEVELOPMENT policy.The present invention is that bamboo wood is as apply the created condition of main bearing member in the civil engineering structure field.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.
Fig. 1 is the cross section that utilizes the single reinforcement rectangular beam member that the fiber muscle strengthens;
Fig. 2 is the cross section that utilizes two muscle rectangular beam members that the fiber muscle strengthens;
Fig. 3 is the cross section that utilizes the single reinforcement tee girder member that the fiber muscle strengthens;
Fig. 4 is the cross section that utilizes two muscle tee girder members that the fiber muscle strengthens;
Fig. 5 is the cross section that utilizes the single reinforcement i-shaped roof beam member that the fiber muscle strengthens;
Fig. 6 is the cross section that utilizes two muscle i-shaped roof beam members that the fiber muscle strengthens;
Fig. 7 is the cross section that utilizes the rectangular column member that the fiber muscle strengthens;
Fig. 8 is the cross section that utilizes the I-shaped post member that the fiber muscle strengthens;
Fig. 9 is that seam construction is the single reinforcement tee girder member of concavo-convex stairstepping seam;
Figure 10 is that seam construction is the single reinforcement tee girder member of zigzag seam;
Figure 11 is that seam construction is the single reinforcement tee girder member of waveform seam.
In the accompanying drawings, 1 is bamboo wood, and 2 is the fiber muscle, and 31 are dipping glue, and 32 is interface glue, and 41 is web, and 42 is top flange plate, and 43 is the bottom wing listrium, and 5 is seam.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.To shown in Figure 11, the invention provides a kind of fiber-reinforced bamboo-based engineering member as Fig. 1,, be pressed into fiber-reinforced bamboo-based engineering member jointly by bamboo wood 1, fiber muscle 2, dipping glue 31 and interface glue 32 4 parts.In this member, fiber muscle 2 places bamboo wood 1 inside, by bamboo wood 1 is wrapped up, and has the topping of thickness c; The direction of fiber muscle 2 is parallel with the member axis direction, and centralized configuration is born tensile stress and compressive stress respectively at the tensile region or the pressure zone in cross section, and improves the rigidity of whole member, is equivalent to the main muscle in traditional reinforced concrete member; Dipping glue 31 is pre-soaked in bamboo wood 1, plays glued effect in pressing process; Interface glue 32 is painted on fiber muscle 2 surfaces, to guarantee the adhesion stress of fiber muscle 2 and bamboo wood 1.
Fig. 1 is the cross section that utilizes the single reinforcement rectangular beam member that fiber muscle 2 strengthens, fiber muscle 2 is arranged in the bottom, cross section, mainly the tensile region is strengthened, utilize the higher intensity of fiber muscle to improve bearing of component, utilize fiber muscle higher modulus of elasticity to improve the rigidity in cross section.
Fig. 2 is the cross section that utilizes two muscle rectangular beam members that fiber muscle 2 strengthens, and fiber muscle 2 is arranged in bottom, cross section and top simultaneously, and pair cross-section tensile region and pressure zone strengthen simultaneously.
Fig. 3 is the cross section that utilizes the single reinforcement tee girder member that fiber muscle 2 strengthens, and the cross section is made of jointly web 41 and top flange plate 42, and top flange plate 42 is positioned at the upper portion pressurized district, and fiber muscle 2 is arranged in the bottom of web 41, and the tensile region of pair cross-section strengthens.
Fig. 4 is the cross section that utilizes two muscle tee girder members that fiber muscle 2 strengthens, the cross section is made of jointly web 41 and top flange plate 42, top flange plate 42 is positioned at the upper portion pressurized district, fiber muscle 2 is arranged in the bottom of web 41 and the top of top flange plate 42 simultaneously, and pair cross-section tensile region and pressure zone strengthen simultaneously.
Fig. 5 is the cross section that utilizes the single reinforcement i-shaped roof beam member that the fiber muscle strengthens, the cross section is made of jointly web 41, top flange plate 42 and bottom wing listrium 43, top flange plate 42 is positioned at the upper portion pressurized district, bottom wing listrium 43 is positioned at the tensile region, bottom, fiber muscle 2 is arranged in the bottom of bottom wing listrium 43, and the pair cross-section tensile region strengthens.
Fig. 6 is the cross section that utilizes two muscle i-shaped roof beam members that the fiber muscle strengthens, the cross section is made of jointly web 41, top flange plate 42 and bottom wing listrium 43, top flange plate 42 is positioned at the upper portion pressurized district, bottom wing listrium 43 is positioned at the tensile region, bottom, fiber muscle 2 is arranged in the bottom of bottom wing listrium 43 and the top of top flange plate 42 simultaneously, and pair cross-section tensile region and pressure zone strengthen simultaneously.
Fig. 7 is the cross section that utilizes the rectangular column member that fiber muscle 2 strengthens, fiber muscle 2 centralized arrangement are in the bottom and the top of depth of section direction, fiber muscle 2 can play humidification when post is subjected to the different directions load, and the tensile region and the pressure zone of pair cross-section strengthen simultaneously.
Fig. 8 is the cross section that utilizes the I-shaped post member that fiber muscle 2 strengthens, the cross section is made of jointly web 41, top flange plate 42 and bottom wing listrium 43, fiber muscle 2 is arranged in the top of top flange plate 42 and the bottom of bottom wing listrium 43 simultaneously, and pair cross-section tensile region and pressure zone strengthen simultaneously.
In aforesaid a kind of fiber-reinforced bamboo-based engineering member, bamboo wood 1 can be thin bamboo strips used for weaving or bamboo tow.Thin bamboo strips used for weaving thickness is 0.8mm～1.2mm, and width is 10mm～20mm, and length can change as required; The bamboo tow with bamboo wood discongest into elongated, be cross-linked with each other and keep the loose reticular fibre bundle of the original arrangement mode of fiber, the moisture content of bamboo wood should be controlled at below 15%; Dipping glue 3 can adopt phenolic resins, and interface glue 4 can adopt epoxide-resin glue.
The type of fiber muscle 2 can be carbon fibre bar, basalt fibre muscle, glass fiber muscle, aramid fiber reinforced plastic bars and assorted fibre muscle etc., to flexural members such as beam, plates, the carbon fibre bar that can select high elastic modulus for use is to guarantee to provide enough rigidity, eccentric compressed member such as coupled columns, pier can select for use the bigger basalt fibre muscle of limiting strain, glass fiber muscle etc. to guarantee the higher lateral deformation ability of member.Be to guarantee the adhesive property between fiber muscle and the bamboo wood, the fiber muscle can adopt through blasting treatment or indentation and handle or coarse format surface such as threaded.
For the square-section member, during compacting, should be according to the total consumption of neutralizing target density calculation bamboo wood, the vertical position of fiber muscle is controlled by the upper and lower bamboo wood consumption of fiber muscle, fiber muscle horizontal level takes the thin bamboo strips used for weaving of the perpendicular setting of colligation at a certain distance to position, and neutralizing target density is got 1.0～1.1g/cm
3, press temperature is got 135～150 ℃, and pressure is got 5.5～6.0N/mm
2, carry out sawing machine-shaping according to design after compacting is finished.
For T section or I-shaped cross-section, combine by two or more simple rectangular section, during combination, the bonding interface of seam 5 should guarantee the requirement of clean and driving fit, carry out superimposed pressurization, adopt following seam construction to increase the bonding interface surface area: (1) concavo-convex stairstepping seam to strengthen respectively forming the connection in cross section; (2) zigzag seam; (3) waveform seam.Interface structure is provided with along the breadth of section direction, and Fig. 9～Figure 11 has provided the diagram that single reinforcement tee girder member is made up by the interface form of different seam constructions:
Fig. 9 is that seam construction is the single reinforcement tee girder member of concavo-convex stairstepping seam;
Figure 10 is that seam construction is the single reinforcement tee girder member of zigzag seam;
Figure 11 is that seam construction is the single reinforcement tee girder member of waveform seam.
Claims (7)
1. the invention provides a kind of fiber-reinforced bamboo-based engineering member,, be pressed into fiber-reinforced bamboo-based engineering member jointly by bamboo wood (1), fiber muscle (2), dipping glue (31) and interface glue (32) four parts; Wherein, fiber muscle (2) places bamboo wood (1) inside; by bamboo wood (1) is wrapped up; and has the topping of thickness c; the direction of fiber muscle (2) is parallel with the member axis direction, and centralized configuration is at the tensile region or the pressure zone in cross section, and dipping glue (31) impregnated in the bamboo wood (1); interface glue (32) is painted on fiber muscle (2) surface, forms the reliable interface of fiber muscle (2) and bamboo wood (1).
2. a kind of fiber-reinforced bamboo-based engineering member according to claim 1, it is characterized in that this member is single reinforcement rectangular beam or two muscle rectangular beam member, when being single reinforcement rectangular beam member, fiber muscle (2) is arranged in the bottom, cross section, when being two muscle rectangular beam member, fiber muscle (2) is arranged in bottom, cross section and top simultaneously.
3. a kind of fiber-reinforced bamboo-based engineering member according to claim 1, it is characterized in that this member is single reinforcement tee girder or two muscle tee girder member, the cross section is made of jointly web (41) and top flange plate (42), top flange plate (42) is positioned at the upper portion pressurized district, when being single reinforcement tee girder member, fiber muscle (2) is arranged in the bottom of web (41), and when being two muscle tee girder member, fiber muscle (2) is arranged in the bottom of web (41) and the top of top flange plate (42) simultaneously.
4. a kind of fiber-reinforced bamboo-based engineering member according to claim 1, it is characterized in that this member is single reinforcement i-shaped roof beam or two muscle i-shaped roof beam member, the cross section is made of jointly web (41), top flange plate (42) and bottom wing listrium (43), when being single reinforcement i-shaped roof beam member, fiber muscle (2) is arranged in the bottom of bottom wing listrium (43), when being two muscle i-shaped roof beam member, fiber muscle (2) is arranged in the bottom of bottom wing listrium (43) and the top of top flange plate (42) simultaneously.
5. a kind of fiber-reinforced bamboo-based engineering member according to claim 1, it is characterized in that this member is rectangle or I-shaped post member, when being the rectangular column member, fiber muscle (2) centralized arrangement is in the bottom and the top of depth of section direction, when being I-shaped post member, the cross section is made of jointly web (41), top flange plate (42) and bottom wing listrium (43), and fiber muscle (2) is arranged in the top of top flange plate (42) and the bottom of bottom wing listrium (43) simultaneously.
6. according to claim 1 or 3 or 4 or 5 described a kind of fiber-reinforced bamboo-based engineering members, it is characterized in that when member is T section or I-shaped cross-section, combine by two or more simple rectangular section, during combination, the bonding interface of seam (5) should guarantee the requirement of clean and driving fit, adopts following seam construction to increase the bonding interface surface area to strengthen respectively forming the connection in cross section: (1) concavo-convex stairstepping seam; (2) zigzag seam; (3) waveform seam.The interface structure is provided with along the breadth of section direction.
7. according to each described a kind of fiber-reinforced bamboo-based engineering member of claim 1 to 6, it is characterized in that bamboo wood (1) can be thin bamboo strips used for weaving or bamboo tow, the moisture content of bamboo wood should be controlled at below 15%; Dipping glue (3) can adopt phenolic resins, and interface glue (4) can adopt epoxide-resin glue; The type of fiber muscle (2) can be carbon fibre bar, basalt fibre muscle, glass fiber muscle, aramid fiber reinforced plastic bars and assorted fibre muscle, and the fiber muscle can adopt through blasting treatment or indentation and handle or coarse format surface such as threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232786A CN101725211A (en) | 2009-12-01 | 2009-12-01 | Fiber-reinforced bamboo-based engineering member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232786A CN101725211A (en) | 2009-12-01 | 2009-12-01 | Fiber-reinforced bamboo-based engineering member |
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| CN101725211A true CN101725211A (en) | 2010-06-09 |
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| CN200910232786A Pending CN101725211A (en) | 2009-12-01 | 2009-12-01 | Fiber-reinforced bamboo-based engineering member |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589428A (en) * | 2014-09-16 | 2015-05-06 | 诸暨市光裕竹业有限公司 | High-strength bamboo bundle board using green-removed or yellow-removed bamboo bundle curtains as raw materials and manufacturing method thereof |
| CN105058518A (en) * | 2015-07-27 | 2015-11-18 | 嘉善汇佳乐装饰材料有限公司 | Bamboo-wood composite modified material |
| CN106193458A (en) * | 2016-08-31 | 2016-12-07 | 济南市人防建筑设计研究院有限责任公司 | The groove type plate of skeleton made by a kind of shaped steel |
| CN114059720A (en) * | 2021-11-30 | 2022-02-18 | 东北大学 | Preparation method of basalt fiber toughened bamboo reinforcement |
-
2009
- 2009-12-01 CN CN200910232786A patent/CN101725211A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589428A (en) * | 2014-09-16 | 2015-05-06 | 诸暨市光裕竹业有限公司 | High-strength bamboo bundle board using green-removed or yellow-removed bamboo bundle curtains as raw materials and manufacturing method thereof |
| CN105058518A (en) * | 2015-07-27 | 2015-11-18 | 嘉善汇佳乐装饰材料有限公司 | Bamboo-wood composite modified material |
| CN106193458A (en) * | 2016-08-31 | 2016-12-07 | 济南市人防建筑设计研究院有限责任公司 | The groove type plate of skeleton made by a kind of shaped steel |
| CN114059720A (en) * | 2021-11-30 | 2022-02-18 | 东北大学 | Preparation method of basalt fiber toughened bamboo reinforcement |
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Open date: 20100609 |