CN112267617A - Easily-connected fast-growing wood-high-strength engineering bamboo column - Google Patents
Easily-connected fast-growing wood-high-strength engineering bamboo column Download PDFInfo
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- CN112267617A CN112267617A CN202010886544.8A CN202010886544A CN112267617A CN 112267617 A CN112267617 A CN 112267617A CN 202010886544 A CN202010886544 A CN 202010886544A CN 112267617 A CN112267617 A CN 112267617A
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- growing wood
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 105
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 105
- 241001330002 Bambuseae Species 0.000 title claims abstract description 105
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 105
- 239000011425 bamboo Substances 0.000 title claims abstract description 105
- 239000002023 wood Substances 0.000 claims abstract description 41
- 239000011162 core material Substances 0.000 claims abstract description 32
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 9
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000004026 adhesive bonding Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/187—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements with sliding nuts or other additional connecting members for joining profiles provided with grooves or channels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides an easy-connection fast-growing wood-high-strength engineering bamboo column which comprises a middle fast-growing wood core material, a peripheral high-strength engineering bamboo side plate and hollow cuboid connection nodes, wherein the high-strength engineering bamboo side plate is connected with the outer side of the fast-growing wood core material in a gluing mode through high-strength glue hot pressing, and node connection spaces are reserved at two ends of the column by reasonably setting the lengths of the core material and the side plate. Through inserting the hollow cuboid connected node of precoating high strength glue in one end connected space, form unsmooth block section respectively at post both ends to realize the preliminary gluey (butt) between the upper and lower post and connect and further bolted connection. The invention inherits all the advantages of the high-strength engineering bamboo hollow column, and the fast-growing wood core material is inserted in the middle, so that the effective area for connecting the engineering bamboo side plates is greatly increased, the side plates can be effectively restrained from buckling under pressure, and the design thickness of the high-strength engineering bamboo side plates is reduced; the rigidity of the joint connection is ensured by the method of adhering hollow joints in the joint area and connecting the hollow joints through bolts.
Description
Technical Field
The invention relates to the field of engineering bamboo columns, in particular to an easily-connected fast-growing wood-high-strength engineering bamboo column.
Background
At present, the civil engineering industry mainly uses high-energy-consumption building materials such as concrete, steel bars, building blocks and the like, not only consumes a large amount of energy and natural resources, but also destroys land and discharges a large amount of industrial waste gas and dust, thus causing huge pressure on the limited natural environment. The bamboo and wood material has excellent mechanical property, and is one of the materials with the highest efficiency in nature in the aspects of strength and cost: compared with wood, the tensile strength of bamboo is about 2 times, the compressive strength is about 1.5 times, and in the aspect of specific strength, the bamboo is higher than that of common steel and wood, has a plurality of excellent characteristics of hard broad-leaved wood, and is an ideal material in the building industry. The bamboo wood also has the characteristics of short production period and strong reproducibility. But the original bamboo material has larger defects, so that the randomness of the built house is larger; the raw bamboo materials are different in diameter and length and hollow, so that the application range of the raw bamboo is greatly limited; the anisotropy of the raw bamboo material causes the node structure to be relatively complex; the gaps of the original bamboo building are inevitable, and the heat insulation function is poor, so that the living use feeling is poor. With the improvement of the processing technology and the technological level of the wood structure, the problems are solved, the bamboo structure is not gradually recovered until the end of the last 90 th century, and the machine is refreshed. The developed bamboo is glued bamboo and recombined bamboo, and the production process is standardized after the research and development of 30 years. As a novel bamboo composite material, the engineering bamboo is widely applied by the excellent mechanical and fire-resistant properties. The elastic modulus of the engineering bamboo material produced in a standardized way at present can reach up to 15000MPa, and the compressive strength and the tensile strength along the fiber direction can respectively reach 60MPa and 140 MPa. When applied to vertical stressed members, in order to reduce self-weight and save manufacturing cost, the engineering bamboo columns are usually in the form of hollow columns, and the side plates are connected by high-strength gluing self-tapping screws.
However, in actual use, the post is not an axially stressed member and is often in an eccentrically stressed state. Buckling failure of the side plates in the tension zone occurs when the eccentric moment is large, and the main factor controlling the compressive bearing capacity of the side plates is the design thickness of the side plates. And when the hollow engineering bamboo column is connected with the upper-layer column and the lower-layer column, the node structure is complex and the construction is complex.
In order to solve the problems, a method for filling fast-growing wood into an engineering bamboo hollow column is provided by referring to a steel pipe concrete structure. The fast-growing wood has the advantages that (1) the fast-growing wood is wide in source and low in price, and as a core material, the application range of the fast-growing wood is expanded, and the manufacturing cost of the fast-growing wood is not obviously influenced; (2) by inserting the fast-growing wood core material in the middle, the effective area for connecting the engineering bamboo side plates is greatly increased, the side plates can be effectively restrained from being bent under pressure, the compression resistance and bending resistance of the column are enhanced, and the thickness of the high-strength engineering bamboo side plates is reduced during design; (3) the fast-growing wood core material is convenient for positioning the high-strength engineering bamboo side plate and the beam column node, and the construction process is simplified; (4) the node area realizes the bolt connection after the preliminary butt joint through the high-strength glue, on one hand, the pre-tightening force of the bolt can be used for further enhancing the glue joint, and on the other hand, the effective connection of the lengthening part is enhanced through the node of the inserted square steel pipe.
Disclosure of Invention
The purpose of the invention is as follows: in order to realize the technical scheme and fully exert the advantages of the engineering bamboo wood and the fast-growing wood, the invention provides the fast-growing wood-high-strength engineering bamboo column easy to connect.
The technical scheme is as follows: an easy-connection fast-growing wood-high-strength engineering bamboo column is characterized by comprising a middle fast-growing wood core material, peripheral high-strength engineering bamboo side plates and hollow cuboid connection nodes, the fast-growing wood core material is of a cuboid structure, the high-strength engineering bamboo side plate is connected with the outer side of the fast-growing wood core material in a gluing way through high-strength glue hot pressing, and two adjacent mutually perpendicular high-strength engineering bamboo side plates are connected by self-tapping nails at the drill tail, the length of the fast-growing wood core is less than that of the high-strength engineering bamboo side plates, node connecting spaces are formed at two ends of the fast-growing wood-high strength engineering bamboo column, hollow cuboid connecting nodes pre-coated with high strength glue are inserted into the connecting spaces at one end to form convex sections, concave sections capable of being clamped with the convex sections are formed at the other end of the fast-growing wood-high strength engineering bamboo column, thereby form unsmooth block section respectively at post both ends, realize the preliminary gluey (butt) between the upper and lower post and connect. Holes can be formed in the hollow cuboid connecting nodes according to the requirement and the hollow cuboid connecting nodes are connected through bolts.
Furthermore, the width B of the high-strength engineering bamboo side plate is equal to the design width B of the engineering bamboo column, and the thickness h of the high-strength engineering bamboo side plate is determined through stress analysis and calculation. The width b 'and the thickness h' of the fast-growing wood core material are calculated by the design size of the fast-growing wood-high-strength engineering bamboo column and the thickness of the side plate:
b’＝B-2h (1)
h’＝H-2h (2)
further, a hollow rectangular connecting node is designed in advance, and the size of the hollow rectangular connecting node is b 'multiplied by h' multiplied by le, wherein le is the length of the node. The length L of the high-strength engineering bamboo side plate is equal to the designed length L of the fast-growing wood-high-strength engineering bamboo column, and the length L' of the fast-growing wood core material is equal to the length of the side plate minus the length of the hollow cuboid connecting joint. The two are connected by high-strength glue in a hot-pressing mode, the middle points of the two are overlapped in the length direction, after the four surfaces are glued, the two ends of the fast-growing wood-high-strength engineering bamboo column are hollow, and the length of each hollow section is 1/2 le.
l’＝L-le (3)
Furthermore, a hollow cuboid connection node which is designed in advance is inserted into one end of the high-strength engineering bamboo side plate. There is 1/2le male section at that end and 1/2le female section at the other end. Thereby two fast living wood-high strength engineering bamboo post about can form the butt joint by interior concave section and convex section block to scribble the form preliminary connection of high strength glue through interior concave section and convex section node outside.
Furthermore, after the upper quick-growing wood-high strength engineering bamboo column and the lower quick-growing wood-high strength engineering bamboo column are in butt joint, effective bolt connection between the hollow cuboid connection node and the quick-growing wood-high strength engineering bamboo column can be realized through a mode of directly forming holes in the steel plates of the connection sections or externally clamping the steel plates.
Has the advantages that:
the invention inherits all the advantages of the high-strength engineering bamboo hollow column, and the rapid-growing wood core material is inserted in the middle, so that the effective area for connecting the engineering bamboo side plates is greatly increased, the side plates can be effectively restrained from being buckled under pressure, and the compression resistance and bending resistance of the column are enhanced; the fast-growing wood has wide source and low price, and can be used as a core material to expand the application range of the fast-growing wood; meanwhile, the fast-growing wood core material is convenient for positioning the high-strength engineering bamboo side plate and beam column nodes, and the construction process is simplified; the node area realizes the bolt connection after the preliminary butt joint through the high-strength glue, on one hand, the pre-tightening force of the bolt can be used for further enhancing the glue joint, and on the other hand, the effective connection of the lengthening part is enhanced through the node of the inserted square steel pipe.
Drawings
FIG. 1 is a diagram of fast-growing wood-high strength engineering bamboo column;
FIG. 2 is a cross-sectional view of a fast-growing wood-high strength engineering bamboo column;
FIG. 3 is a general view of a fast-growing wood-high strength engineering bamboo column and a connection method thereof;
list of reference numerals:
1-fast growing wood core material, 2-high-strength engineering bamboo side plate, 3-hollow cuboid connecting node and 4-self-tapping screw with drill tail.
Detailed Description
The technical solution of the present invention will be further described with reference to the following detailed description and accompanying drawings.
As shown in figure 1, the easy-connection fast-growing wood-high-strength engineering bamboo column comprises a middle fast-growing wood core material 1, peripheral high-strength engineering bamboo side plates 2 and hollow cuboid connection nodes 3, the fast-growing wood core material is of a cuboid structure, the high-strength engineering bamboo side plate is connected with the outer side of the fast-growing wood core material in a gluing way through high-strength glue hot pressing, and two adjacent high-strength engineering bamboo side plates which are vertical to each other are connected through a self-tapping screw 4, the length of the fast-growing wood core is less than that of the high-strength engineering bamboo side plates, node connecting spaces are formed at two ends of the fast-growing wood-high strength engineering bamboo column, hollow cuboid connecting nodes pre-coated with high strength glue are inserted into the connecting spaces at one end to form convex sections, concave sections capable of being clamped with the convex sections are formed at the other end of the fast-growing wood-high strength engineering bamboo column, concave-convex clamping sections are formed at two ends of the columns respectively, so that preliminary glue (butt) connection between the upper column and the lower column is realized. Holes can be formed in the hollow cuboid connecting nodes according to the requirement and the hollow cuboid connecting nodes are connected through bolts. When the method is implemented, firstly, according to the design size B (width) multiplied by H (height) multiplied by L (length) of the fast-growing wood-high-strength engineering bamboo column, the thickness H of the side plate obtained through stress analysis and theoretical calculation and the design length le of the connecting node, the thickness of the high-strength engineering bamboo side plate and the width and thickness of the fast-growing wood core are obtained, and the following formula is shown:
b’＝B-2h (1)
h’＝H-2h (2)
l’＝L-le (3)
l＝L (4)
wherein b ', h ' and l ' are respectively the width, height and length of the core material, and l is the length of the side plate. And the width of the high-strength engineering bamboo side plate can be adjusted according to the splicing mode of the high-strength engineering bamboo side plate.
According to the formula (2), the length of the high-strength engineering bamboo side plate is larger than that of the core material, the difference between the length of the high-strength engineering bamboo side plate and the length of the core material is the length of the connecting node, after the four-side high-strength engineering bamboo side plate and the fast-growing wood core material are connected through the length center high-strength glue in a hot-pressing mode, the two ends of the fast-growing wood-high-strength engineering bamboo column are hollow, and the length of the hollow sections at the. One end of the high-strength engineering bamboo side plate is inserted with a pre-designed hollow cuboid connection node. Then there is 1/2le male section at that end and 1/2le female section at the other end, as shown in the cross-sectional view of fig. 2. The upper and lower quick-growing wood-high-strength engineering bamboo columns can be clamped by the inner concave sections and the outer convex sections to form butt joint. And the joint is primarily connected by smearing high-strength glue on the outer sides of the joints of the concave section and the convex section.
The upper and lower columns are spliced through the inner concave section and the outer convex section, and effective bolted connection between the hollow cuboid connection node and the fast-growing wood-high-strength engineering bamboo column can be realized through direct bolted connection through the steel plate holes of the connection section or by adopting a form of externally clamping a steel plate, as shown in fig. 3.
Claims (6)
1. The utility model provides an easy fast raw wood-high strength engineering bamboo post of connecting which characterized in that, includes middle part fast raw wood core, peripheral high strength engineering bamboo curb plate and hollow cuboid connected node, fast raw wood core is the cuboid structure, and the high strength engineering bamboo curb plate passes through high strength glue hot pressing and is connected with fast raw wood core outside veneer, and connects through boring tail self tapping nail between the adjacent two mutually perpendicular high strength engineering bamboo curb plates, fast raw wood core length is less than high strength engineering bamboo curb plate length, forms node connected space at fast raw wood-high strength engineering bamboo post both ends after the veneer connection to insert the hollow cuboid connected node that precoats high strength glue in one end connected space, form the evagination section, fast raw wood-high strength engineering bamboo post another end forms the interior concave section that can block with the evagination section.
2. The easy-to-connect fast-growing wood-high-strength engineering bamboo column as claimed in claim 1, wherein: the width B of the high-strength engineering bamboo side plate is equal to the design width B of the engineering bamboo column, and the thickness h of the high-strength engineering bamboo side plate is determined through stress analysis and calculation; the width b 'and the thickness h' of the fast-growing wood core material are calculated by the design size of the fast-growing wood-high-strength engineering bamboo column and the thickness of the side plate:
b’＝B-2h (1)
h’＝H-2h (2)
3. the easy-to-connect fast-growing wood-high-strength engineering bamboo column as claimed in claim 1, wherein: the size of the hollow cuboid connecting node is b 'x h' x le, wherein le is the length of the node; the length L of the high-strength engineering bamboo side plate is equal to the length L of the fast-growing wood-high-strength engineering bamboo column, and the length L' of the fast-growing wood core material is equal to the length of the side plate minus the length of the hollow cuboid connecting joint; the fast-growing wood-high-strength engineering bamboo column is connected with the fast-growing wood-high-strength engineering bamboo column through high-strength glue in a hot-pressing mode, the middle points of the fast-growing wood-high-strength engineering bamboo column are overlapped in the length direction, after the four sides of the fast-growing wood-high-strength engineering bamboo column are glued, the two ends of the;
l’＝L-le (3)
4. the easy-to-connect fast-growing wood-high-strength engineering bamboo column as claimed in claim 3, wherein: a hollow cuboid connecting node is inserted into one end of the high-strength engineering bamboo side plate, an 1/2le convex section exists at the end, and a 1/2le concave section exists at the other end.
5. The easy-to-connect fast-growing wood-high-strength engineering bamboo column as claimed in claim 1, wherein: the concave sections and the convex sections of the upper and lower quick-growing wood-high-strength engineering bamboo columns are primarily connected by smearing high-strength glue.
6. The easy-to-connect fast-growing wood-high-strength engineering bamboo column as claimed in claim 5, wherein: after the upper quick-growing wood-high-strength engineering bamboo column and the lower quick-growing wood-high-strength engineering bamboo column are in butt joint, the bolt connection between the hollow cuboid connection node and the quick-growing wood-high-strength engineering bamboo column is realized by directly forming holes in the connection section steel plates or externally clamping the steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886544.8A CN112267617A (en) | 2020-08-28 | 2020-08-28 | Easily-connected fast-growing wood-high-strength engineering bamboo column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010886544.8A CN112267617A (en) | 2020-08-28 | 2020-08-28 | Easily-connected fast-growing wood-high-strength engineering bamboo column |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207585A (en) * | 2000-01-25 | 2001-08-03 | Koken Kk | Building material |
| CN105666627A (en) * | 2016-02-25 | 2016-06-15 | 南京林业大学 | High-strength glue-laminated bamboo hollow column and preparation method thereof |
| CN208363269U (en) * | 2018-06-26 | 2019-01-11 | 青岛理工大学 | A kind of steel column and column assembled grafting node |
| CN111300578A (en) * | 2020-04-08 | 2020-06-19 | 湘潭市建筑设计院 | Preparation method of side-pressure integrated bamboo-sandwiched fast-growing wood combined column |
| CN211228887U (en) * | 2019-10-23 | 2020-08-11 | 上海隽执建筑科技有限公司 | Bracing column base node is used in timber structure building decoration |
-
2020
- 2020-08-28 CN CN202010886544.8A patent/CN112267617A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207585A (en) * | 2000-01-25 | 2001-08-03 | Koken Kk | Building material |
| CN105666627A (en) * | 2016-02-25 | 2016-06-15 | 南京林业大学 | High-strength glue-laminated bamboo hollow column and preparation method thereof |
| CN208363269U (en) * | 2018-06-26 | 2019-01-11 | 青岛理工大学 | A kind of steel column and column assembled grafting node |
| CN211228887U (en) * | 2019-10-23 | 2020-08-11 | 上海隽执建筑科技有限公司 | Bracing column base node is used in timber structure building decoration |
| CN111300578A (en) * | 2020-04-08 | 2020-06-19 | 湘潭市建筑设计院 | Preparation method of side-pressure integrated bamboo-sandwiched fast-growing wood combined column |
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Application publication date: 20210126 |