CN102518253B - Bamboo-like truss structure - Google Patents
Bamboo-like truss structure Download PDFInfo
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- CN102518253B CN102518253B CN 201110411153 CN201110411153A CN102518253B CN 102518253 B CN102518253 B CN 102518253B CN 201110411153 CN201110411153 CN 201110411153 CN 201110411153 A CN201110411153 A CN 201110411153A CN 102518253 B CN102518253 B CN 102518253B
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Abstract
The invention relates to a bamboo-like truss structure, which consists of pole units composed of cylindrical busbar pole units, cylindrical spiral curve pole units and spiral broken line pole units along the axial direction of the structure, and pole units formed by connecting the intersection points of the spiral curve pole units and the busbar pole units located in one cross section by straight-line segments along the radial direction of the structure. Specifically, the cylindrical busbar pole units and the spiral curve pole units together ensure a contour as a smooth cylinder; the spiral broken line pole units strengthen the axial compression resistance and the anti-torsion performance of the structure; the radial pole units improve the radial compression resistance and the bending resistance of the structure. The invention is a columnar truss structure with high specific strength and high specific stiffness, and can meet the large span and lightweight demands of the components of modern aerospace vehicles, as well as effectively solves the problems of insufficient stiffness and strength of a columnar truss structure under the condition of a great slenderness ratio.
Description
Technical field
The present invention relates to the imitative bamboo trussed construction of a kind of column, belong to the structure-design technique field.
Background technology
Imitative bamboo trussed construction is to use for reference nature bamboo gross feature, carries out a kind of column trussed construction of Bionic Design.The natural plants bamboo is a kind of ring that distributing vertically, by the radially bulkhead of ring, with thick bamboo tube, partly forms a structure of associated integral body in length and breadth.Test shows, the radially bulkhead of ring can make the radially supporting capacity of thick bamboo tube improve three times, has significantly improved rigidity and the intensity of structure.And the column trussed construction is the truss form that a kind of peripheral profile is column, because this structure has higher specific stiffness and specific strength, be widely used in aerospace field.The representational form of structure of column truss is the column cell structure, and the truss rod unit of this class formation is helical curve, along axis of no-feathering to the periphery that is distributed in structure.The characteristic distributions of this class formation truss rod unit, caused the problem of this class formation radial strength deficiency under the large span condition.
Chinese patent ZL 01814980.4 has announced a kind of column trussed construction, and this structure is comprised of the spiral folding mast unit be wound around around an axis and the straight line pole unit at syndeton two ends.Due to the outline indentation of this structure, therefore be unfavorable for bringing difficulty also to the assembling between member by glueing joint covering to form smooth surface simultaneously; The bar unit of structure trend is all axially on the other hand, radially without bar unit, supports, and affects whole bending rigidity and the intensity of structure.
Imitative bamboo trussed construction relates to a kind of column trussed construction.The ring that distributing vertically in nature bamboo macrostructure, partly form an associated integral body in length and breadth by the radially bulkhead of ring with thick bamboo tube, both kept the lightweight characteristics of trussed construction, improved again its rigidity and intensity under the large span condition.Imitative bamboo trussed construction guarantees the smooth continuous of outline by peripheral bus bar unit and helical curve bar unit on the one hand, and utilizes the anti-torsion of spiral folding mast unit strengthening structure, anti-axial compression and anti-axial tension performance; Use for reference on the other hand the affect mechanism of ring on the bamboo structure Rigidity and strength, arrange in trussed construction and make structure become connected in length and breadth integral body in the radial bars unit, strengthen the counter-bending and anti-radial compressive property of structure.Therefore, this structure had both had the lightweight characteristics of trussed construction, had improved again its Rigidity and strength under the large span condition.
Summary of the invention
For the deficiency of avoiding prior art to exist, the present invention proposes a kind of imitative bamboo trussed construction, this trussed construction guarantees the smooth continuous of outline by peripheral bus bar unit and helical curve bar unit, and utilizes the anti-torsion of spiral folding mast unit strengthening structure, anti-axial compression and anti-axial tension performance; Simultaneously, use for reference the affect mechanism of ring on the bamboo structure Rigidity and strength, the radial bars unit is set in trussed construction, make structure become connected in length and breadth integral body, strengthen bending resistance and the anti-radial compressive property of structure.
The technical solution adopted for the present invention to solve the technical problems: structure is comprised of segment of a cylinder bar unit, cylinder helical curve bar unit, spiral folding mast unit, radial bars unit four parts.Along axis of no-feathering to bar unit by segment of a cylinder bar unit, cylinder helical curve bar unit and spiral folding mast cell formation, along structure, bar unit is radially connected the helical curve bar unit that is positioned at same cross section and forms with the intersection point of bus bar unit by straightway.
Described segment of a cylinder bar unit circumferentially is evenly distributed on the face of cylinder along the face of cylinder, and segment of a cylinder bar unit hop count is made as n, n >=3.
Described cylinder helical curve bar unit is that to take the end points of segment of a cylinder bar unit be starting point, and along cylinder, clockwise and counterclockwise spiral winding forms.N section segment of a cylinder bar unit is arranged, 2n bar cylinder helical curve bar unit is arranged.Wherein, it is terminal that every helical curve bar unit be take the end points of two ends, structure left and right bus bar unit, and at least should be through two cylinder zones of being divided by the bus bar unit, and pitch should meet following formula:
L/S=m/k (k is more than or equal to 2 positive integer)
Wherein, the pitch of L-helical curve bar unit; The length of S-bus bar unit; The cylinder number of regions that m-is evenly divided by the bus bar unit, also equal bus bar unit hop count; The cylinder number of regions of being divided by the bus bar unit of every helical curve bar unit process of k-.
Described spiral folding mast unit is that to take the end points of segment of a cylinder bar unit be starting point, direction along the helical curve bar unit, intersection point by straightway connection helical curve bar unit with the bus bar unit forms, and its number equals cylinder helical curve bar unit number, is the 2n bar.
Described radial bars unit is that the straightway connection is positioned at the intersection point formation of the helical curve bar unit of same cross section with the bus bar unit, and the intersection point that is positioned at same cross section equals the hop count n of bus bar unit.There is at most n* (n-1)/2 section the radial bars unit, at least should have 1 section.
Concrete steps:
Step 1, the segment of a cylinder bar unit is arranged, n section bus bar unit is set and is distributed in cylinder, its n >=3;
(1) helical curve bar unit pitch is calculated, and every helical curve bar unit is k through the cylinder number of regions of being divided by the bus bar unit, by following formula, calculates pitch L:
L/S=m/k (k is more than or equal to 2 positive integer)
Wherein, the pitch of L-helical curve bar unit, the length of S-bus bar unit, the cylinder number of regions that m-is evenly divided by the bus bar unit, also equal bus bar unit hop count, the cylinder number of regions of being divided by the bus bar unit of every helical curve bar unit process of k-;
(2) cylinder helical curve bar unit creates, take L as pitch, and the end points of segment of a cylinder bar unit of take is starting point, and along cylinder, clockwise and counterclockwise spiral winding forms cylinder helical curve bar unit, n section segment of a cylinder bar unit is arranged, 2n bar cylinder helical curve bar unit is arranged;
Beneficial effect:
A kind of imitative bamboo trussed construction of the present invention, the characteristics of its structure are that peripheral bus bar unit and helical curve bar unit guarantee the smooth continuous of outline, and utilize the anti-torsion of spiral folding mast unit strengthening structure, anti-axial compression and anti-axial tension performance; On the other hand, use for reference the affect mechanism of ring on the bamboo structure Rigidity and strength, arrange in trussed construction and make structure become connected in length and breadth integral body in the radial bars unit, strengthen the counter-bending and anti-radial compressive property of structure.Add the radial bars unit in the column trussed construction, form the imitative bamboo trussed construction be connected in length and breadth, both kept the lightweight characteristics of trussed construction, improved again its Rigidity and strength under the large span condition.The imitative bamboo trussed construction of the present invention is the column trussed construction with high specific strength, high specific stiffness, can meet the field such as modern aerospace to the light-weighted demand of girder construction.
The accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of imitative bamboo trussed construction of the present invention is described in further detail.
Fig. 1 is imitative bamboo truss segment of a cylinder bar unit schematic diagram.
Fig. 2 is imitative bamboo truss leg surface helix curvilinear rod cell schematics.
Fig. 3 is imitative bamboo truss spiral folding mast cell schematics.
Fig. 4 is imitative bamboo truss radial bars cell schematics.
Fig. 5 is imitative bamboo trussed construction schematic diagram.
In figure:
1. segment of a cylinder bar unit 2. cylinder helical curve bar units
3. 4. radial bars unit, spiral folding mast unit
The specific embodiment
The present embodiment is a kind of imitative bamboo trussed construction, comprises that segment of a cylinder bar unit 1, cylinder helical curve bar unit 2, spiral folding mast unit 3, radial bars unit 4 form.
Imitative bamboo trussed construction bar unit vertically consists of segment of a cylinder bar unit 1, cylinder helical curve bar unit 2 and spiral folding mast unit 3, and radial bars unit 4 is connected the helical curve bar unit that is positioned at same cross section and forms with the intersection point of bus bar unit by straightway.
Segment of a cylinder bar unit 1, along circumferentially being evenly distributed on the face of cylinder of the face of cylinder, segment of a cylinder bar unit hop count is made as n, n >=3.
Cylinder helical curve bar unit 2, the end points of segment of a cylinder bar unit of take is starting point, along cylinder, clockwise and counterclockwise spiral winding forms.N section segment of a cylinder bar unit is arranged, 2n bar cylinder helical curve bar unit is arranged.Wherein, it is terminal that every helical curve bar unit be take the end points of two ends, structure left and right bus bar unit, and at least should be through two cylinder zones of being divided by the bus bar unit, and pitch should meet following formula:
L/S=m/k (k is more than or equal to 2 positive integer)
Wherein, the pitch of L-helical curve bar unit; The length of S-bus bar unit; The cylinder number of regions that m-is evenly divided by the bus bar unit, also equal bus bar unit hop count; The cylinder number of regions of being divided by the bus bar unit of every helical curve bar unit process of k-.
Spiral folding mast unit 3, the end points of segment of a cylinder bar unit of take is starting point, along the direction of helical curve bar unit, connects the helical curve bar unit by straightway and forms with the intersection point of bus bar unit, its number equals cylinder helical curve bar unit number, is the 2n bar.
To there are 8 bus bar units, be about to the cylinder zone and be divided into 8 parts, and every helical curve bar unit is described through the embodiment in 8 cylinder zones being divided by the bus bar unit on cylinder.
The first step, the segment of a cylinder bar unit is arranged, is arranged that 8 bus bar units are distributed in cylinder, referring to Fig. 1;
Second step, cylinder helical curve bar unit creates,
(1) determine helical curve bar unit pitch, every helical curve bar unit 8 cylinder zones through being divided by the bus bar unit on cylinder, k=8, by formula: L/S=m/k, calculate pitch: L=S*n/k=S, pitch equals the length of bus bar unit;
Wherein, the pitch of L-helical curve bar unit, the length of S-bus bar unit, the cylinder number of regions that m-is evenly divided by the bus bar unit, also equal bus bar unit hop count, the cylinder number of regions of being divided by the bus bar unit of every helical curve bar unit process of k-;
(2) cylinder helical curve bar unit creates, and the length of segment of a cylinder bar unit of take is pitch, and the end points of segment of a cylinder bar unit of take is starting point, and clockwise and 16 cylinder helical curve bar units of counterclockwise spiral winding formation along cylinder, referring to Fig. 2;
The 3rd step, spiral folding mast unit creates, and the end points of segment of a cylinder bar unit of take is starting point, and along the direction of helical curve bar unit, straightway connects the intersection point of helical curve bar unit with the bus bar unit, forms 16 spiral folding mast unit, referring to Fig. 3;
The 4th step, the radial bars unit creates, and is positioned at the intersection point formation radial bars unit of the helical curve bar unit of same cross section with the bus bar unit with the straightway connection.The intersection point that is positioned at same cross section equals the hop count 8 of bus bar unit, and there is at most 8* (8-1)/2=28 section the radial bars unit, at least should have 1 section, referring to Fig. 4.
Claims (2)
1. an imitative bamboo trussed construction, it is characterized in that comprising segment of a cylinder bar unit, cylinder helical curve bar unit, spiral folding mast unit, radial bars unit, wherein, the bar unit circumferential along structure be by segment of a cylinder bar unit, cylinder helical curve bar unit and spiral folding mast cell formation, and along structure, bar unit is radially connected the helical curve bar unit that is positioned at same cross section and forms with the intersection point of bus bar unit by straightway;
Described segment of a cylinder bar unit circumferentially is evenly distributed on the face of cylinder along the face of cylinder, and segment of a cylinder bar unit hop count is made as n, n >=3;
Described cylinder helical curve bar unit is that to take the end points of segment of a cylinder bar unit be starting point, and along cylinder, clockwise and counterclockwise spiral winding forms, and n section segment of a cylinder bar unit is arranged, and 2n bar cylinder helical curve bar unit is arranged;
Described spiral folding mast unit is that to take the end points of segment of a cylinder bar unit be starting point, direction along the helical curve bar unit, intersection point by straightway connection helical curve bar unit with the bus bar unit forms, and its number equals cylinder helical curve bar unit number, is the 2n bar;
Described radial bars unit is to be positioned at the intersection point formation of the helical curve bar unit of same cross section with the bus bar unit with the straightway connection, the intersection point that is positioned at same cross section equals the hop count n of bus bar unit, there is at most n* (n-1)/2 section the radial bars unit, at least should have 1 section.
2. imitative bamboo trussed construction according to claim 1, it is characterized in that: it is terminal that every cylinder helical curve bar unit be take the end points of two ends, left and right bus bar unit, and at least should be through two cylinder zones of being divided by the bus bar unit, pitch should meet following formula:
L/S=m/k （k≥2）
Wherein, the pitch of L-cylinder helical curve bar unit, the length of S-bus bar unit, the cylinder number of regions that m-is divided by the bus bar unit, the cylinder number of regions of being divided by the bus bar unit of every cylinder helical curve bar unit process of k-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110411153 CN102518253B (en) | 2011-12-10 | 2011-12-10 | Bamboo-like truss structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110411153 CN102518253B (en) | 2011-12-10 | 2011-12-10 | Bamboo-like truss structure |
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| CN102518253A CN102518253A (en) | 2012-06-27 |
| CN102518253B true CN102518253B (en) | 2013-12-25 |
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| CN 201110411153 Expired - Fee Related CN102518253B (en) | 2011-12-10 | 2011-12-10 | Bamboo-like truss structure |
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| CN104695958B (en) * | 2015-03-02 | 2017-03-15 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | A kind of erection method of ore removal stope first floor earth mat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1798064A (en) * | 1928-12-07 | 1931-03-24 | Chorlton Alan Ernest Leofric | Light-weight rigid structure |
| US3798864A (en) * | 1970-10-16 | 1974-03-26 | Georgii B | Supporting structures and methods of making them |
| US5003736A (en) * | 1987-05-15 | 1991-04-02 | Japan Aircraft Mfg. Co., Ltd. | Deployable and collapsible structure |
| JPH09124000A (en) * | 1995-10-27 | 1997-05-13 | Toshiba Corp | Pannel structure |
| CN1464934A (en) * | 2000-07-28 | 2003-12-31 | 布莱阿姆青年大学 | Iso-truss structure |
| CN202347728U (en) * | 2011-12-10 | 2012-07-25 | 西北工业大学 | Imitation bamboo truss structure |
-
2011
- 2011-12-10 CN CN 201110411153 patent/CN102518253B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1798064A (en) * | 1928-12-07 | 1931-03-24 | Chorlton Alan Ernest Leofric | Light-weight rigid structure |
| US3798864A (en) * | 1970-10-16 | 1974-03-26 | Georgii B | Supporting structures and methods of making them |
| US5003736A (en) * | 1987-05-15 | 1991-04-02 | Japan Aircraft Mfg. Co., Ltd. | Deployable and collapsible structure |
| JPH09124000A (en) * | 1995-10-27 | 1997-05-13 | Toshiba Corp | Pannel structure |
| CN1464934A (en) * | 2000-07-28 | 2003-12-31 | 布莱阿姆青年大学 | Iso-truss structure |
| CN202347728U (en) * | 2011-12-10 | 2012-07-25 | 西北工业大学 | Imitation bamboo truss structure |
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Granted publication date: 20131225 Termination date: 20161210 |