CN109129801B - Manufacturing method of annular continuous bamboo stirrups - Google Patents
Manufacturing method of annular continuous bamboo stirrups Download PDFInfo
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- CN109129801B CN109129801B CN201811194892.8A CN201811194892A CN109129801B CN 109129801 B CN109129801 B CN 109129801B CN 201811194892 A CN201811194892 A CN 201811194892A CN 109129801 B CN109129801 B CN 109129801B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 139
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 139
- 241001330002 Bambuseae Species 0.000 title claims abstract description 139
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 139
- 239000011425 bamboo Substances 0.000 title claims abstract description 139
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
A method for making annular continuous bamboo stirrups includes such steps as continuously winding bamboo sheets layer by layer to become bamboo tubes, cutting to obtain bamboo stirrups with predefined width, die making, immersing in adhesive, winding bamboo sheets, curing, demoulding, protecting and cutting. The manufacturing method is simple and convenient, fully utilizes the advantages of good toughness and high grain-following tensile strength of the bamboo, and the whole bamboo stirrups are formed in a ring shape continuously, can adapt to components with different shapes and sizes, has the advantages of strong operability in the processing process and high manufacturing efficiency, simultaneously utilizes rich bamboo resources in China, enriches bamboo products, is green and environment-friendly, saves energy and reduces emission, has obvious economic benefit, and accords with the guidelines of sustainable development in China.
Description
Technical Field
The invention relates to a manufacturing method of stirrups, in particular to a manufacturing method of annular continuous bamboo stirrups, and belongs to the field of civil engineering.
Background
The stirrup is used for fixing the position of the main steel bar so that various steel bars in the beam column member form a steel bar framework, and the stirrup is connected with the stressed main steel bar and the concrete in the pressed area in parallel so as to work together. The stirrups in the beam are used for connecting the stressed main reinforcements and the frame force reinforcements to form a reinforcement framework, the reinforcement framework mainly bears shearing force and torque, the beam is subjected to the combined action of the shearing force and the bending moment in a bending shear area, the main tensile stress trace in the shearing span section is oblique, oblique cracks are generated, and the stirrups are vertical and intersect with the oblique cracks, so that the generation and the development of the oblique cracks can be prevented or limited. The stirrups in the column are used for fixing the stressed longitudinal steel bars, so that the longitudinal steel bars are prevented from being stressed to be buckled, and the ductility of the component is improved. When the spiral stirrup is adopted, the concrete can be restrained, so that the concrete is in a three-way compression state, and the compressive strength of the concrete is improved. Therefore, stirrups are widely applied to concrete members, consume a large amount of materials for replacing stirrups made of steel bars, and become the necessity of reducing engineering cost and developing low-carbon buildings.
The bamboo material is considered as one of the materials with highest efficiency in nature by virtue of excellent mechanical properties, the tensile strength and the compressive strength of the bamboo material are far higher than those of common wood, the strength-weight ratio of the bamboo material is also higher than that of common steel, and the bamboo stirrup is an ideal method for preparing stirrups by replacing reinforcing steel bars with bamboo stirrups. However, so far, practical application of bamboo mainly remains in indoor decoration and building template layers, and no excellent method is available for producing stirrups by using bamboo and playing the constraint effect. At present, the bamboo stirrup is manufactured, a plurality of bamboo strips are adopted for binding and splicing, the reliability of binding and splicing is difficult to ensure, the annular continuous forming of the whole bamboo is difficult, and the lap joint is difficult to effectively connect. The manufacturing process is discontinuous, the stirrup has poor overall performance and insufficient constraint effect, is difficult to adapt to components with different shapes and sizes, has poor universal applicability, and has a plurality of defects.
Disclosure of Invention
The invention aims to provide a manufacturing method of annular continuous bamboo stirrups, which is characterized in that an economic and durable bamboo stirrup is obtained, the application range and the field of bamboo products are expanded, the characteristics of good toughness and high grain-oriented tensile strength of bamboo are fully utilized, the manufactured bamboo stirrups are low-carbon, environment-friendly and renewable, and accord with the guidelines of sustainable development in China, and the manufacturing method is characterized in that bamboo stirrups with preset width are cut as required by a cutting method by continuously and uniformly winding bamboo sheets layer by layer into bamboo tubes, and the manufacturing steps are as follows:
1) Manufacturing a pipe die: according to the size and shape of the required bamboo stirrups, manufacturing a corresponding pipe die, and wrapping a layer of isolating film on the outer surface of the pipe die, so that later demolding is facilitated;
2) Dipping bamboo wood: selecting a bamboo sheet with the thickness of 0.1-1 mm, and completely soaking the bamboo sheet with resin glue;
3) Winding bamboo sheets: continuously and uniformly winding the impregnated bamboo sheets layer by layer on the outer surface of a pipe die in the circumferential direction, rolling the pipe die to enable the bamboo sheets to be tightly wound, and uniformly distributing resin glue to form a winding formed bamboo pipe;
4) Curing: curing the wound bamboo tube under indoor conditions for at least 24 hours, or curing at an accelerated speed in an oven or a curing chamber, wherein the temperature is set at 50-150 ℃ for 4-12 hours;
5) Demolding: after the resin glue is solidified, separating the bamboo tube from the tube mold;
6) Protection: surface protection treatment is carried out on the inner side and the outer side of the demoulded bamboo tube, and the isolation layer 5 is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved;
7) Cutting: cutting the bamboo tube into bamboo stirrups with preset widths by a cutting method.
The bamboo sheets are wound in the following grain direction, the winding angle is 0 degrees with the transverse direction of the pipe die, and the number of winding layers is not limited.
The cross section of the bamboo tube is one of a circle, an ellipse, a rectangle, a round end and a regular polygon with the edge number more than 4.
The impregnated resin adhesive is one of epoxy resin, vinyl resin and polyurethane resin, and the mixing ratio of the impregnated resin adhesive and the curing agent is controlled to be 1:1-2:1.
The coating material adopted by the isolation layer is one of vegetable oil, resin, cement-based composite material or asphalt-based composite material.
The invention has the following beneficial effects:
(1) The application range and the application field of bamboo products are expanded, the bamboo stirrups are used for replacing or matching with the traditional reinforcing steel stirrups, the steel amount for the building can be reduced, the building energy consumption is saved, and the engineering cost is saved.
(2) The operation is simple and convenient, the characteristics of good toughness and high grain-oriented tensile strength of the bamboo are fully utilized, good constraint effect can be obtained, and the normal use requirement of the structure is met.
(3) The bamboo stirrups are formed by cutting bamboo tubes continuously wound by bamboo sheets at one time, and the whole bamboo stirrups are continuously formed in a ring shape and can adapt to components with different shapes and sizes, and the bamboo stirrups have the advantages of strong operability in the processing process and high manufacturing efficiency.
(4) The bamboo stirrups are low-carbon, environment-friendly and renewable, and accord with the environment-friendly development mode pursued in China.
(5) The bamboo stirrups prevent the members from being influenced by the external environment, so that the durability of the members under the severe working environment can be enhanced, and the surface attractiveness of the members can be enhanced.
Drawings
FIG. 1 is a schematic diagram of a process flow for manufacturing annular continuous bamboo stirrups;
FIG. 2 is a schematic structural view of an integral bamboo tube cut into bamboo stirrups;
FIG. 3 is a schematic view of a circular cross section of an annular continuous bamboo stirrup;
FIG. 4 is a schematic structural view of a circular continuous bamboo stirrup with a rounded rectangle cross section;
FIG. 5 is a schematic view of a circular end cross section of an annular continuous bamboo stirrup;
In the attached drawings, 1 is bamboo stirrup; 2 is a bamboo tube; 3 is a pipe die; 4 is a separation film; 5 is an isolation layer; and 6 is a bamboo sheet.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings. The invention provides a manufacturing method of annular continuous bamboo stirrups, which is characterized in that bamboo sheets 6 are continuously and uniformly wound into a bamboo tube 2 layer by layer, and then cut into bamboo stirrups 1 with preset widths according to requirements by a cutting method, and the manufacturing steps are as follows:
1) Manufacturing a pipe die: according to the size and shape of the required bamboo stirrups 1, manufacturing a corresponding pipe die 3, and wrapping a layer of isolating film 4 on the outer surface of the pipe die 3, so that later demolding is facilitated;
2) Dipping bamboo wood: selecting a bamboo sheet 6 with the thickness of 0.1-1 mm, and completely soaking the bamboo sheet 6 with resin glue;
3) Winding bamboo sheets: continuously and uniformly winding the impregnated bamboo sheets 6 layer by layer along the circumferential direction on the outer surface of the pipe die 3, rolling the pipe die 3 to enable the bamboo sheets 6 to be tightly wound, and uniformly distributing resin glue to form a winding formed bamboo pipe 2;
4) Curing: curing the wound bamboo tube 2 under indoor conditions for at least 24 hours, or curing at an accelerated speed in an oven or a curing chamber, wherein the temperature is set at 50-150 ℃ for 4-12 hours;
5) Demolding: after the resin glue is solidified, separating the bamboo tube 2 from the tube mould 3;
6) Protection: surface protection treatment is carried out on the inner side and the outer side of the demoulded bamboo tube 2, and the isolation layer 5 is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved;
7) Cutting: the bamboo tube 2 is cut into bamboo stirrups 1 of a predetermined width by a cutting method.
The bamboo sheet 6 is wound in the following grain direction, the winding angle is 0 degrees with the transverse direction of the pipe die 3, and the winding layer number is not limited.
The cross section of the bamboo tube 2 is one of a circle, an ellipse, a rectangle, a round end and a regular polygon with the edge number more than 4.
The impregnated resin adhesive is one of epoxy resin, vinyl resin and polyurethane resin, and the mixing ratio of the impregnated resin adhesive and the curing agent is controlled to be 1:1-2:1.
The coating material adopted by the isolation layer 5 is one of vegetable oil, resin, cement-based composite material or asphalt-based composite material.
Example 1:
A manufacturing method of bamboo stirrups with circular cross sections comprises the following manufacturing steps: selecting a circular pipe die 3, and wrapping a layer of isolating film 4 on the outer surface of the circular pipe die 3, so that later demolding is facilitated; then the bamboo sheet 6 is completely impregnated by resin glue, continuously and uniformly wound on a pipe die layer by layer, and then rolled to enable the bamboo sheet 6 to be tightly wound, and the resin glue is uniformly distributed to form the winding formed bamboo pipe 2; curing the wound bamboo tube 2 under indoor conditions or accelerating curing in an oven or a curing room; after the resin glue is solidified, separating the bamboo tube 2 from the circular tube die 3; surface protection treatment is carried out on the inner side and the outer side of the demoulded bamboo tube 2, and the isolation layer 5 is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved; finally, the bamboo tube 2 is cut into bamboo stirrups 1 with preset widths by a cutting machine according to the requirement. The bamboo stirrups 1 with circular cross sections are arranged at equal intervals along the longitudinal direction of the member, and are matched with the longitudinal ribs to form a reinforcement framework of the concrete member.
Example 2:
A method for manufacturing bamboo stirrups with rounded corners and rectangular cross sections comprises the following steps: selecting a round-corner rectangular pipe die 3, and wrapping a layer of isolation film 4 on the outer surface of the round-corner rectangular pipe die 3, so that later demolding is facilitated; then the bamboo sheet 6 is completely impregnated by resin glue, continuously and uniformly wound on a pipe die layer by layer, and then rolled to enable the bamboo sheet 6 to be tightly wound, and the resin glue is uniformly distributed to form the winding formed bamboo pipe 2; curing the wound bamboo tube 2 under indoor conditions or accelerating curing in an oven or a curing room; after the resin glue is solidified, separating the bamboo tube 2 from the circular tube die 3; surface protection treatment is carried out on the inner side and the outer side of the demoulded bamboo tube 2, and the isolation layer 5 is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved; finally, the bamboo tube 2 is cut into bamboo stirrups 1 with preset widths by a cutting machine according to the requirement. The bamboo stirrups 1 with the rounded rectangular cross sections are arranged at equal intervals along the longitudinal direction of the member, and are matched with the longitudinal ribs to form a reinforcement framework of the concrete member.
Example 3:
A manufacturing method of round-end bamboo stirrups comprises the following manufacturing steps: selecting a round-end pipe die 3, and wrapping a layer of isolating film 4 on the outer surface of the round-end pipe die 3, so that later demolding is facilitated; then the bamboo sheet 6 is completely impregnated by resin glue, continuously and uniformly wound on a pipe die layer by layer, and then rolled to enable the bamboo sheet 6 to be tightly wound, and the resin glue is uniformly distributed to form the winding formed bamboo pipe 2; curing the wound bamboo tube 2 under indoor conditions or accelerating curing in an oven or a curing room; after the resin glue is solidified, separating the bamboo tube 2 from the circular tube die 3; surface protection treatment is carried out on the inner side and the outer side of the demoulded bamboo tube 2, and the isolation layer 5 is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved; finally, the bamboo tube 2 is cut into bamboo stirrups 1 with preset widths by a cutting machine according to the requirement. The manufactured round-end bamboo stirrups 1 are arranged at equal intervals along the longitudinal direction of the member, and are matched with the longitudinal ribs to form a reinforcement framework of the concrete member.
Example 4:
the bamboo stirrups 1 can be combined on the same section of the concrete member to facilitate the manufacture of large-size concrete members. On the same cross section, the bamboo stirrups 1 with round corners and rectangular cross sections can be combined with the bamboo stirrups 1 with round cross sections in the inner sleeve, or on the same cross section, the bamboo stirrups with round ends with different sizes are combined with each other, the inner and outer arrangement forms a composite constraint, and then the bamboo stirrups are matched with longitudinal ribs to form a reinforcement framework of a large-size concrete member, so that the manufacturing cost of the concrete member is reduced. The two combination forms are examples of composite use of bamboo stirrups, but are not limited to the two forms, and the bamboo stirrups 1 can be reasonably combined according to the needs in the actual use process.
Claims (3)
1. A manufacturing method of annular continuous bamboo stirrups is characterized in that bamboo sheets (6) are continuously and uniformly wound into bamboo tubes (2) layer by layer, and then the bamboo stirrups (1) with preset widths are cut according to the requirement by a cutting method, and the manufacturing steps are as follows:
1) Manufacturing a pipe die: according to the size and shape of the required bamboo stirrups (1), manufacturing a regular polygon pipe die (3) with a round, elliptic, rectangular, round end or edge number more than 4, and wrapping an isolating film (4) on the outer surface of the pipe die (3) so as to facilitate later demoulding;
2) Dipping bamboo wood: selecting a bamboo sheet (6) with the thickness of 0.1-1 mm, and completely soaking the bamboo sheet (6) with resin glue;
3) Winding bamboo sheets: continuously and uniformly winding the impregnated bamboo sheet (6) on the outer surface of the pipe die (3) layer by layer along the circumferential direction in the following grain direction, wherein the winding angle is 0 degrees with the circumferential direction of the pipe die (3), rolling the pipe die (3) to enable the bamboo sheet (6) to be tightly wound, and uniformly distributing resin glue to form a winding formed bamboo pipe (2);
4) Curing: curing the wound bamboo tube (2) under indoor conditions, wherein the curing time is at least 24 hours, or curing at an accelerated speed in an oven or a curing chamber, and the temperature is set at 50-150 ℃ for 4-12 hours;
5) Demolding: after the resin glue is solidified, separating the bamboo tube (2) from the tube mould (3);
6) Protection: the inner side and the outer side of the demoulded bamboo tube (2) are subjected to surface protection treatment, and the isolation layer (5) is manually brushed, dip-coated or sprayed by a spray gun, so that the durability of the material is improved;
7) Cutting: cutting the bamboo tube (2) into bamboo stirrups (1) with preset widths by a cutting method.
2. The method for manufacturing annular continuous bamboo stirrups according to claim 1, wherein the impregnated resin glue is one of epoxy resin, vinyl resin and polyurethane resin, and the mixing ratio of the impregnated resin glue and the curing agent is controlled to be 1:1-2:1.
3. The method for manufacturing the annular continuous bamboo stirrup according to claim 1, wherein the brushing material adopted by the isolation layer (5) is one of vegetable oil, resin, cement-based composite material or asphalt-based composite material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811194892.8A CN109129801B (en) | 2018-10-10 | 2018-10-10 | Manufacturing method of annular continuous bamboo stirrups |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811194892.8A CN109129801B (en) | 2018-10-10 | 2018-10-10 | Manufacturing method of annular continuous bamboo stirrups |
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| CN109129801A CN109129801A (en) | 2019-01-04 |
| CN109129801B true CN109129801B (en) | 2024-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760216A (en) * | 2017-01-17 | 2017-05-31 | 南京林业大学 | A kind of bamboo wood multiple tube constrains steel reinforced concrete combining structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3351775B2 (en) * | 2000-03-06 | 2002-12-03 | 光正 森 | Bamboo plate processing by lamination bonding |
| DE102008063188A1 (en) * | 2008-12-29 | 2010-07-01 | Deym, Gräfin, Marion, Dr. | Stirrup element for inserting in pillowcase, has hollow space clamped with pillowcase after inserting in relation to stirrup element, where hollow space is sufficiently large to hold upper part of head of sleeping person |
| SG11201506646QA (en) * | 2013-03-06 | 2015-09-29 | Eidgenoess Tech Hochschule | Bamboo composite material for structural applications and method of fabricating the same |
| CN104456411B (en) * | 2014-12-05 | 2016-01-06 | 湖南城市学院 | A kind of bamboo matter lampshade and production method thereof |
| CN104631701B (en) * | 2014-12-30 | 2016-08-03 | 南京林业大学 | The preparation method of ring-type compound bamboo cylinder biomass component |
| CN105715881B (en) * | 2016-04-13 | 2019-04-05 | 浙江鑫宙竹基复合材料科技有限公司 | A kind of super-large diameter bamboo winding composite pipe and its manufacturing method |
| CN105715882B (en) * | 2016-04-15 | 2019-12-03 | 浙江鑫宙竹基复合材料科技有限公司 | A kind of small-diameter bamboo winding composite pipe and its manufacturing method |
| CN106113176A (en) * | 2016-06-27 | 2016-11-16 | 上海理工大学 | A kind of bamboo wood concrete column and preparation method thereof |
| CN106042129B (en) * | 2016-07-07 | 2019-03-22 | 国际竹藤中心安徽太平试验中心 | A kind of bamboo and wood composite high-strength pressure resistance column and its manufacturing method |
| CN107672194A (en) * | 2017-09-08 | 2018-02-09 | 哈尔滨工程大学 | A kind of FRP stirrups with ribbing and preparation method |
| CN207419847U (en) * | 2017-10-23 | 2018-05-29 | 南京林业大学 | A kind of bamboo wood armored concrete structure |
| CN108374519A (en) * | 2018-04-07 | 2018-08-07 | 南京林业大学 | A kind of bamboo wood constraint cluster type raw bamboo structure |
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| CN106760216A (en) * | 2017-01-17 | 2017-05-31 | 南京林业大学 | A kind of bamboo wood multiple tube constrains steel reinforced concrete combining structure |
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