CN101250902B - Off-centering hollow ball node - Google Patents
Off-centering hollow ball node Download PDFInfo
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- CN101250902B CN101250902B CN2008100525663A CN200810052566A CN101250902B CN 101250902 B CN101250902 B CN 101250902B CN 2008100525663 A CN2008100525663 A CN 2008100525663A CN 200810052566 A CN200810052566 A CN 200810052566A CN 101250902 B CN101250902 B CN 101250902B
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- hollow sphere
- node
- hollow ball
- chord member
- eccentric
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- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to an eccentric hollow sphere node, comprising a hollow sphere, chord members and web members. The hollow sphere can be formed by casting, or butt welding two hemispheres which are made by pressing sheets of steel; ribbed stiffeners can be arranged in the hollow sphere when the stress is large. The chord members are connected with the hollow sphere eccentrically, and can be formed by round steel tubes or square steel tubes. The web members are connected with the hollow sphere in centre and can be formed by round steel tubes. The chord members and the web members are directly welded with the hollow sphere or are cast together with the hollow sphere to form the eccentric hollow sphere node. The eccentric hollow sphere node has the advantages that: a great mount of intersecting line cutting work in an intersecting node structure is avoided; processing and manufacture are easy; node quality is easy to guarantee; the construction cost is low; meanwhile, the eccentric hollow sphere node has the characteristics of beautiful appearance of the intersecting node structure. The eccentric hollow sphere node is especially suitable for plane girders, three-dimensional girders and spatial mesh structures which are not provided with suspended ceilings and need good exterior appearance effect.
Description
Technical field
The present invention relates to a kind of building structure node, more particularly, relate to the node in a kind of building structure midplane truss, space truss and the spatial mesh structure.
Background technology
Node in plane frame, space truss and the spatial mesh structure is the key of total system, node commonly used has welded hollow spherical joints (centering connects, and also is that the node place has center line of the bar to intersect at the centre of sphere), bolted spherical node and pipe pipe tubular joint in the engineering.Along with in application in engineering, these several nodes also expose some self defective separately.Each center line of the bar intersects at the centre of sphere in the welded spherical node, because the chord member that general hollow ball diameter will go out structure greatly causes the soffit of structure that protrusion is arranged one times more, out-of-flatness can not be satisfied building for space requirement attractive in appearance.Bolted spherical node easy reason owing to construction precision in practice of construction forms vacation and tightens phenomenon, forms potential safety hazard to structure.And in the tubular joint, the pipe pipe directly is welded to connect, and has satisfied and has built requirement attractive in appearance, but also had following several respects weak point:
1. because chord member is generally elongated, caused the waste of material to a certain extent;
2. all web members and chord member intersect all needs to cut out the space intersection, processing and fabricating trouble, cost height;
3. the acute angle welding region welding quality of web member and chord member junction is difficult for guaranteeing;
4. many web member intersections can not guarantee the junction of rod member center, form off-centre, cause chord member to bear additional bending moment, and are stressed unfavorable to chord member.
Summary of the invention
In order to overcome deficiency of the prior art, the invention provides a kind of off-centering hollow ball node, it is connected with the off-centre of hollow ball by chord member, preferably resolves the structure soffit and protrudes the architectural not aesthetic problem that causes.Overcome in the intersection node because the waste problem of the material that chord member causes continuously by hollow ball; Because web member is directly connected on the hollow ball, only need chord member to carry out the intersection cutting, avoided a large amount of space intersection cutting work, and welding quality guarantees easily.Avoid rod member to bear eccentric bending moment simultaneously, and bear, improved the node stress performance, thereby realize making comparatively simple, easy for installation by hollow ball.
Technical scheme of the present invention is as follows:
A kind of off-centering hollow ball node comprises hollow ball, chord member and web member, and described chord member is connected with hollow ball is eccentric, and described web member is connected with hollow ball centering;
Described chord member is connected with hollow ball by welding with web member;
Described hollow ball is made or is made by the two hemispheres butt welding for casting;
Described hollow ball inside is provided with stiffening rib;
Described chord member and web member are cast formation with hollow ball;
Described chord member can be made of round steel pipe or square steel pipe, and described web member can be made of round steel pipe.
The present invention has avoided adopting a large amount of space intersection cutting work in the structure of tubular joint, and processing and fabricating is simple, and the node quality guarantees that easily cost is low, has the characteristics of tubular joint structure outward appearance grace simultaneously.Be specially adapted to not be provided with furred ceiling, need plane frame, space truss and the spatial mesh structure of better appearance effect.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the lateral view of Fig. 1;
Fig. 4 is the partial enlarged drawing of Fig. 3;
The off-centering hollow ball node that Fig. 5 forms for casting;
Fig. 6 is the inner off-centering hollow ball node that stiffening rib is set.
Among the figure, 1: hollow ball, the chord member of 2: the first intersection otch, the chord member of 3: the second intersection otch; 4: the web member of straight cut; 5: the stiffening rib in the hollow ball; O: the centre of sphere of hollow ball, a-a are the axis of the chord member 2 of first intersection otch, and b-b is the axis of the chord member 3 of the second intersection otch.
The specific embodiment
As shown in Figure 1, off-centering hollow ball node comprises the chord member 3 of chord member 2, the second intersection otch of hollow ball 1, the first intersection otch, web member 4.Hollow ball 1 is that casting or two hemispheres butt welding form.The chord member 2 of the first intersection otch, chord member 3 ends of the second intersection otch are processed as and the eccentric intersection otch that is connected of hollow ball, can adopt circle or rectangular steel pipe, the chord member 3 axis b-b of the axis a-a second intersection otch of the chord member 2 of the second intersection otch overlap in the projection of horizontal plane, as shown in Figure 2.Web member 4 can be made of round steel pipe.
The quantity of hollow ball only is provided with one at each node.The quantity of chord member is relevant with the composition of structure, can be in a direction or both direction setting, and present embodiment is provided with in one direction, as shown in Figure 2.The quantity of web member and structure are formed relevant, can be provided with a row or multi-rowly, and present embodiment is provided with two rows, as shown in Figure 3; Every row can be provided with one or many web members, and the every row of this example is provided with three web members, as shown in Figure 1, 2.
Hollow ball is connected with the off-centre of chord member, and eccentric throw is the distance of hollow ball centre of sphere O to chord member axis a-a or b-b, and its span is greater than zero, and must not be greater than (D-d)/2, and wherein D is the hollow ball diameter, and d is the chord member diameter.Under this eccentric throw, sphere protrudes trussed construction chord member following table upper thread and is of a size of (D-d)/2-e, and this value can allow size to determine according to architectural effect, can obtain eccentric throw then.
The diameter dimension of the chord member 2 of first intersection otch and the chord member 3 of second intersection otch can be identical, also certain difference can be arranged, and difference in size is determined to get final product according to the architectural appearance effect.
But off-centering hollow ball node also monoblock cast forms, and as shown in Figure 5, the chord member on the cast-in-block hollow ball node, web member etc. directly are connected with chord member, web member more then.
Unidirectional or multidirectional stiffening rib steel plate can be set in the hollow ball, reach the purpose of the strength and stiffness that hollow ball node is provided, this example is provided with unidirectional stiffening rib, as shown in Figure 6.
Claims (3)
1. off-centering hollow ball node, comprise hollow ball, chord member, web member, it is characterized in that, described hollow ball forms for casting or is made by the two hemispheres butt welding, inside is provided with the floor of putting more energy into, and described chord member and hollow ball off-centre are welded to connect, the hollow ball centre of sphere to the vertical distance of chord member axis greater than zero, be not more than hollow ball diameter and chord member diameter difference 1/2nd, described web member and hollow ball centering are welded to connect.
2. off-centering hollow ball node according to claim 1 is characterized in that chord member and web member cast formation with hollow ball.
3. off-centering hollow ball node according to claim 1 is characterized in that described chord member is made of round steel pipe or square steel pipe, and described web member is made of round steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100525663A CN101250902B (en) | 2008-03-31 | 2008-03-31 | Off-centering hollow ball node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100525663A CN101250902B (en) | 2008-03-31 | 2008-03-31 | Off-centering hollow ball node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101250902A CN101250902A (en) | 2008-08-27 |
| CN101250902B true CN101250902B (en) | 2011-05-18 |
Family
ID=39954481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100525663A Expired - Fee Related CN101250902B (en) | 2008-03-31 | 2008-03-31 | Off-centering hollow ball node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101250902B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776956B (en) * | 2012-08-03 | 2016-09-07 | 浙江精工钢结构集团有限公司 | Individual layer box-type section surface net shell node |
| CN104110072A (en) * | 2014-07-01 | 2014-10-22 | 浙江省电力设计院 | Hemispherical hollow welding sphere joint for large-span space steel structure support |
| CN105508355B (en) * | 2016-01-07 | 2018-06-19 | 上海振华重工(集团)股份有限公司 | A kind of containment type node |
| CN111809883B (en) * | 2020-07-28 | 2022-01-21 | 中国建筑第八工程局有限公司 | Prestressed chord pipe structure in large-span steel truss and construction method thereof |
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2008
- 2008-03-31 CN CN2008100525663A patent/CN101250902B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101250902A (en) | 2008-08-27 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin University Urban Planning & Design Research Institute Assignor: Tianjin University Contract record no.: 2011120000140 Denomination of invention: Off-centering hollow ball node Granted publication date: 20110518 License type: Exclusive License Open date: 20080827 Record date: 20110816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20210331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |