CN105040818A - Bar unit for large-span lattice grid structure - Google Patents
Bar unit for large-span lattice grid structure Download PDFInfo
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- CN105040818A CN105040818A CN201510400507.0A CN201510400507A CN105040818A CN 105040818 A CN105040818 A CN 105040818A CN 201510400507 A CN201510400507 A CN 201510400507A CN 105040818 A CN105040818 A CN 105040818A
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Abstract
The invention discloses a bar unit for a large-span lattice grid structure. The bar unit for the large-span lattice grid structure relates to a lattice grid structure bar unit, and solves the problem that existing large-span lattice grid structures are high in cost and low in whole structure safety. The bar unit for the large-span lattice grid structure comprises two metal welding balls, six or eight branch bars and a grid bar piece, and further comprises two change-over bars, wherein each metal welding ball and one end of one change-over bar are welded to be an integrated body, each end of the grid bar piece is welded with one end of three of four branch bars, the other end of three or four branch rods are uniformly distributed and welded on corresponding change-over bars along the peripheral direction of the change-over bars, and the three or four branch bars on each end are distributed in an umbrella shape. The bar unit for the large-span lattice grid structure is used for the large-span lattice grid structure.
Description
Technical field
The present invention relates to a kind of lattice Lattice Structure Members unit for large span.
Background technology
Large span network is since last century, the eighties was introduced from Germany, be widely used in long span building engineering, as airport building, stadiums, the engineerings such as museum, the network extensively adopted at present is rack (net shell) structure, its Types of nodes is bar-ball-bar connected mode, namely each root bar is connected with ball, each root rod member is not spatially all at same position, a ball is connected with several bar, composition space is interconnected the tension and compression rod member spherical structure that is mutually related, this structure space good integrity, be applicable to very much crossing over spatial extent to have certain requirements structure.But the span of this network also has a definite limitation, for bolt-ball net frame (net shell), because the rod member of existing bolt-ball net frame, what adopt is that each root rod member is connected with bolt sphere by a bolt, for every root rod member, the pulling force of a rod member all passes to bolt sphere by a bolt, and along with rack (net shell) span increases, the power of bearing also increases by bolt.Because bolt is high-strength material, manufacturing process determines the diameter of bolt and is generally less than 64mm, if the diameter of bolt is greater than 64mm, manufacturing process is difficult to the quality ensureing bolt, thus the span of restrained force bolt-ball net frame.If every root member design is greater than a bolt in bolt sphere, the diameter of bolt sphere will increase considerably, and bolt sphere is medicine ball, and bolt sphere weight is the cubic relationship of diameter, and bolt-ball net frame weight significantly increases, cost increase.
Solder sphere rack (net shell) overcomes the shortcoming of bolt-ball net frame, and span can design larger than bolt-ball net frame (net shell), but along with the increase of span, the quantity of material exponentially of structure increases, and structure is uneconomical.For Space Trusses In Plan, general span is below 60 meters, for housing space truss structure, span is also limited to less than 120 meters, be greater than this span, due to the relation exponent function relation of structure between metal material doses and span, cause metal material doses to be increased with the increase exponentially of span, structural cost significantly promotes, and infrastructure cost is high.
Publication date is on December 9th, 2009, publication number is the cylindrical surface compound rods giant grid structure that the utility model patent of CN201358513 discloses a kind of super-span, the agent structure of this utility model is a kind of macrolattice structure be made up of latticed members, its size of mesh opening is 10 ~ 30m, the rod member of traditional welding ball and bolt-ball net frame (net shell) replaces with welding latticed pole by this utility model, effectively can overcome the problem of strut buckling, integral rigidity and the stability of structure can be increased substantially, avoid strut buckling, like this can cross-domain larger span, save steel using amount, reduce construction costs, be applicable to the super-span space net shell roof structure of more than 200m.The conehead of latticed pole is connected respectively at solder sphere by each point of strut piece by this utility model, because each point of strut piece has certain thickness respectively, if do not pass through connection mutually between each point of strut piece, namely each point of strut piece keeps the section area of former each point of strut piece constant without any cutting, namely each point of strut piece is connected with solder sphere respectively, 200 meters with upper span time, the size of solder sphere reaches more than 1200mm, most of solder sphere diameter reaches 1500mm, and other bulb diameter individual reaches more than 2000mm.So far, the specification of more than solder sphere 900mm lacks bearing capacity experimental data, and solder sphere large so is also difficult to make, and so large solder sphere also considerably increases the weight of solder sphere, causes total very uneconomical.The utility model is connected with solder sphere after each point of strut piece is passed through connection mutually, be connected with solder sphere after cutting a part by each branch bar cross section, Ze Ge branch cross-sectional strength can not be guaranteed, total degree of safety is caused to reduce, through a large amount of calculating simulation, this utility model only can be used in span and be greater than in the shell structures such as the structure cylinder of 200 meters, material is saved than solder sphere or bolt-ball net frame (net shell), be difficult to be applied in the most frequently used dull and stereotyped network, reason is that the solder sphere diameter that slabbed construction calculates is larger.
To sum up, the safety that is high and total of the lattice network cost of existing large span is low.
Summary of the invention
The present invention is that the lattice network solving existing large span exists the low problem of cost safety that is high and total, and then provides a kind of lattice Lattice Structure Members unit for large span.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
Lattice Lattice Structure Members unit for large span of the present invention comprises two metal solder spheroids, six or eight pieces points of poles and grid rod member, described Lattice Structure Members unit also comprises two selector bars, one end of each metal solder spheroid and a selector bar is welded as a whole, every one end of grid rod member is all welded with one end of three or four pieces points of poles, three or the other end of four pieces points of poles be welded on corresponding selector bar along the circumferencial direction of selector bar is uniform, three or four pieces points of poles of every one end are umbrella branch.
The present invention has following beneficial effect:
Lattice Lattice Structure Members unit for large span of the present invention is connected with a point pole by selector bar, namely by selector bar connection metal welding spheroid and multiple points of poles, ball node adopts welded spherical node, compared with the lattice network of existing large span, lattice grid rod member of the present invention is not directly be connected with welding spheroid by point pole, and be through after selector bar welds with solder sphere, be connected with a point pole by bridgeware, effectively reduce the diameter of metal solder spheroid, thus greatly reduce metal material consumption, metal material consumption decreases more than 30%,
The present invention's each point of pole is welded with selector bar and is cut without cross section, thus improves the safety of total;
The present invention be applicable to span be greater than 60 meters dull and stereotyped network, cylinder grid, Grid, shape of a saddle grid and other typical surface meshes, and atypia surface mesh structure, namely save material than common solder sphere or bolt-ball net frame (net shell).
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the lattice Lattice Structure Members unit for large span of the present invention, and Fig. 2 is the schematic front view of the lattice Lattice Structure Members unit for large span of the present invention.
Detailed description of the invention
Detailed description of the invention one: as shown in Fig. 1 ~ 2, the lattice Lattice Structure Members unit for large span of present embodiment comprises two metal solder spheroids 1, six or eight pieces points of poles 2 and grid rod member 3, described Lattice Structure Members unit also comprises two selector bars 4, one end of each metal solder spheroid 1 and a selector bar 4 is welded as a whole, every one end of grid rod member 3 is all welded with one end of three or four pieces points of poles 2, three or the other end of four pieces points of poles 2 be welded on corresponding selector bar 4 along the circumferencial direction of selector bar 4 is uniform, three or four pieces points of poles 2 of every one end are in umbrella branch.
Connected by the lattice Lattice Structure Members unit for large span of the present invention and can form dull and stereotyped network, cylinder grid, Grid, shape of a saddle grid and other typical surface meshes, and atypia surface mesh structure.
Detailed description of the invention two: as shown in Fig. 1 ~ 2, present embodiment grid rod member 3 comprises three or four grid mobile jib 3-1 and network 3-2, the quantity of grid mobile jib 3-1 is consistent with the quantity of point pole 2 to be arranged, every root grid mobile jib 3-1 and a corresponding point of pole 2 affixed, two adjacent grid mobile jib 3-1 are provided with network 3-2.Other composition and annexation identical with detailed description of the invention one.
Detailed description of the invention three: as shown in Fig. 1 ~ 2, present embodiment selector bar 4 is welding square steel pipe, round steel pipe or seamless steel pipe.Design like this, can alleviate the weight of structural member while the intensity ensureing lattice Lattice Structure Members unit.Other composition and annexation identical with detailed description of the invention one or two.
Detailed description of the invention four: as shown in Figure 2, the selector bar 4 of present embodiment is casting hollow pipe or not cast hollow section.Design like this, can alleviate the weight of structural member while the intensity ensureing lattice Lattice Structure Members unit.Other composition and annexation identical with detailed description of the invention one or two.
Detailed description of the invention five: the size of mesh opening of the network 3-2 of present embodiment is 8 ~ 30m.The cross section of network 3-2 also can be more than five steel pipes or sub-circular polygonal steel pipe.Design like this, reduces the calculated length of every root rod member, owing to having given full play to the intensity of Lattice Structure Members unit, the weight that can alleviate structural member.Other composition and annexation identical with detailed description of the invention two.
Claims (5)
1. the lattice Lattice Structure Members unit for large span, it is characterized in that: described Lattice Structure Members unit comprises two metal solder spheroids (1), six or eight pieces points of poles (2) and grid rod member (3), described Lattice Structure Members unit also comprises two selector bars (4), each metal solder spheroid (1) is welded as a whole with one end of a selector bar (4), every one end of grid rod member (3) is all welded with one end of three or four pieces points of poles (2), three or the other end of four pieces points of poles (2) be welded on corresponding selector bar (4) along the circumferencial direction of selector bar (4) is uniform, three or four pieces points of poles (2) of every one end are in umbrella branch.
2. the lattice Lattice Structure Members unit for large span according to claim 1, it is characterized in that: grid rod member (3) comprises three or four grid mobile jibs (3-1) and network (3-2), the quantity of grid mobile jib (3-1) is consistent with the quantity of point pole (2) to be arranged, every root grid mobile jib (3-1) is affixed with a corresponding point of pole (2), and two adjacent grid mobile jibs (3-1) are provided with network (3-2).
3. the lattice Lattice Structure Members unit for large span according to claim 1 and 2, is characterized in that: selector bar (4) is welding square steel pipe, round steel pipe or seamless steel pipe.
4. the lattice Lattice Structure Members unit for large span according to claim 1 and 2, is characterized in that: selector bar (4) is casting hollow pipe or not cast hollow section.
5. the lattice Lattice Structure Members unit for large span according to claim 2, is characterized in that: the size of mesh opening of network (3-2) is 8 ~ 30m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510400507.0A CN105040818A (en) | 2015-07-09 | 2015-07-09 | Bar unit for large-span lattice grid structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510400507.0A CN105040818A (en) | 2015-07-09 | 2015-07-09 | Bar unit for large-span lattice grid structure |
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| CN105040818A true CN105040818A (en) | 2015-11-11 |
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| CN201510400507.0A Pending CN105040818A (en) | 2015-07-09 | 2015-07-09 | Bar unit for large-span lattice grid structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133732A (en) * | 2015-07-24 | 2015-12-09 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Assembling rod member unit for large-span latticed grid structure |
| CN105484532A (en) * | 2016-01-26 | 2016-04-13 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Large-grid steel structure cooling tower |
| CN106013600A (en) * | 2016-06-27 | 2016-10-12 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Assembly type grid structure member bar unit |
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| WO2001014655A1 (en) * | 1999-08-23 | 2001-03-01 | Neosys Technology Co., Ltd. | Subsidiary materials for truss structure |
| CN201245922Y (en) * | 2008-08-11 | 2009-05-27 | 河北建工集团有限责任公司 | Buckling reinforcement of bending rod in network frame structure |
| CN201358513Y (en) * | 2009-01-15 | 2009-12-09 | 湖南大学 | Giant lattice structure for super-span cylindrical surface combined rod system |
| CN201554124U (en) * | 2009-11-24 | 2010-08-18 | 湖南大学 | Cylindrical surface large net shell structure |
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2015
- 2015-07-09 CN CN201510400507.0A patent/CN105040818A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014655A1 (en) * | 1999-08-23 | 2001-03-01 | Neosys Technology Co., Ltd. | Subsidiary materials for truss structure |
| CN201245922Y (en) * | 2008-08-11 | 2009-05-27 | 河北建工集团有限责任公司 | Buckling reinforcement of bending rod in network frame structure |
| CN201358513Y (en) * | 2009-01-15 | 2009-12-09 | 湖南大学 | Giant lattice structure for super-span cylindrical surface combined rod system |
| CN201554124U (en) * | 2009-11-24 | 2010-08-18 | 湖南大学 | Cylindrical surface large net shell structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133732A (en) * | 2015-07-24 | 2015-12-09 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Assembling rod member unit for large-span latticed grid structure |
| CN105484532A (en) * | 2016-01-26 | 2016-04-13 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Large-grid steel structure cooling tower |
| CN106013600A (en) * | 2016-06-27 | 2016-10-12 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Assembly type grid structure member bar unit |
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