CN210032329U - Special-shaped steel truss node structure - Google Patents
Special-shaped steel truss node structure Download PDFInfo
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- CN210032329U CN210032329U CN201920628273.9U CN201920628273U CN210032329U CN 210032329 U CN210032329 U CN 210032329U CN 201920628273 U CN201920628273 U CN 201920628273U CN 210032329 U CN210032329 U CN 210032329U
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Abstract
The utility model relates to a steel truss technical field, concretely relates to dysmorphism steel truss node structure. The method comprises the following steps: the top connecting node is provided with two chord end and three web rod end, the bottom connecting node is provided with an arc lower chord end, a linear lower chord end and a web rod end, the top connecting node, the arc lower chord and the bottom connecting node jointly form an arc-shaped structure, the web rod end connection part of the bottom connecting node is provided with an arc chamfering plate, and the web rod end connection part of the top connecting node is also provided with an arc chamfering plate. The utility model discloses a top connected node, arc chord member and bottom connected node form convex structure jointly, can satisfy the net height requirement of vestibule below, and the ventral rod end and the chord member end junction through top connected node and bottom connected node set up the arc scute, reduce the stress concentration condition because of web member and chord member contained angle undersize lead to.
Description
Technical Field
The utility model relates to a steel truss technical field, concretely relates to dysmorphism steel truss node structure.
Background
At present, corridor buildings are increasingly arranged in public buildings and ultralimit high-rise buildings, and a steel truss structure system is often adopted in a large-span corridor. For individual modeling special buildings, the traditional rectangular truss structure cannot meet the building requirements due to limitation of floor height and requirements on net height below a corridor, so that a firm and reliable special-shaped steel truss node structure which can meet the requirements on net height needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and defect of prior art, providing one kind and can satisfying the net height requirement to firm reliable special-shaped steel truss node structure.
The purpose of the utility model is realized through the following technical scheme:
a profiled steel truss node structure comprising: the top connecting node is provided with two chord ends and three web rod ends, the bottom connecting node is provided with an arc lower chord end, a linear lower chord end and a web rod end, the chord rod end of the top connecting node is fixedly connected with one end of the arc lower chord, the three web rod ends of the top connecting node are fixedly connected with the web rod, the other end of the arc lower chord is fixedly connected with the arc lower chord end of the bottom connecting node, the linear lower chord end of the bottom connecting node is fixedly connected with the linear lower chord, the web rod end of the bottom connecting node is fixedly connected with the web rod, the top connecting node, the arc lower chord and the bottom connecting node form an arc-shaped structure together, and arc chamfering plates are arranged at the joints of the web rod end of the bottom connecting node, the arc lower chord end and the linear lower chord end, and an arc-shaped chamfering plate is also arranged at the joint of the web rod end and the chord rod end of the top connecting node.
Specifically, the fixed connection is a full penetration welding mode fixed connection.
Specifically, top connected node's web member is equipped with strength muscle with chord member end junction, strength muscle extending direction is the same with the web member direction of top connected node web member end, bottom connected node's web member end and arc chord member end down, straight line shape chord member end junction also is equipped with strength muscle, strength muscle extending direction is the same with the web member direction of bottom connected node web member end.
Specifically, the chamfer radius of the arc chamfer plate is not less than 400mm, and the thickness of the arc chamfer plate is not less than the thickness of the top connecting node and the bottom connecting node.
Specifically, the arc-shaped lower chord and the linear lower chord are box-shaped structures in cross section.
Specifically, one web rod end in the top connecting node is perpendicular to a tangent line of the circular arc-shaped structure, and the other two web rod ends are symmetrically arranged at the web rod end perpendicular to the tangent line.
Specifically, a ventral rod end on the bottom connecting node is perpendicular to a linear lower chord rod end on the bottom connecting node, and the linear lower chord rod end on the bottom connecting node is horizontally arranged.
Compared with the prior art, the utility model following advantage and beneficial effect are included:
the utility model discloses a top connected node, arc lower chord member and bottom connected node form convex structure jointly, can satisfy the net height requirement of vestibule below, the ventral rod end and the chord member end junction through top connected node and bottom connected node set up the arc chamfer board, the chamfer radius is not less than 400mm, thereby the handing-over area of web member and chord member has been increased, reduce the stress concentration condition that leads to because of web member and chord member contained angle undersize, can effectual promotion dysmorphism steel truss node structural strength, satisfy special-shaped steel truss node structural strength requirement.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
The utility model discloses a concrete implementation process as follows:
as shown in fig. 1, a node structure of a deformed steel truss includes: the top connection node 1 is provided with two chord ends and three web rod ends, the bottom connection node 2 is provided with an arc lower chord end, a linear lower chord end and web rod ends, the chord end of the top connection node 1 is fixedly connected with one end of the arc lower chord 3, the three web rod ends of the top connection node 1 are fixedly connected with the web rod 5, the other end of the arc lower chord 3 is fixedly connected with the arc lower chord end of the bottom connection node 2, the linear lower chord end of the bottom connection node 2 is fixedly connected with the linear lower chord 4, the web rod end of the bottom connection node 2 is fixedly connected with the web rod 5, the arc lower chord 3 and the top connection node 1 are bent and arched, and the top connection node 1, the arc lower chord 3 and the bottom connection node 2 form an arc-shaped structure together, can increase the regional net height in shape steel truss node structure below, 2 web rod ends of bottom connected node all are equipped with the arc chamfer board with arc lower chord end, straight line shape lower chord end junction, the web rod end of top connected node 1 also is equipped with arc chamfer board 6 with chord end junction, the chamfer radius of arc chamfer board 6 is not less than 400mm, through addding arc chamfer board 6, has increased the handing-over area of web member 5 with the chord, reduces the stress concentration condition that leads to because of web member 5 and chord contained angle undersize, can effectual promotion special-shaped steel truss node structural strength, satisfies special-shaped steel truss node structural strength requirement.
Specifically, fixed connection is full penetration welding mode fixed connection, when adopting full penetration welding process welding, needs to carry out two-layer welding, and welding current, welding voltage and welding speed are effectively controlled respectively to twice welding process, make welding quality guarantee, through full penetration welding mode positive and negative weld forming, can effectively improve the atress characteristic of dysmorphism steel truss node structure.
Specifically, top connected node 1's web member 5 is equipped with powerful muscle 7 with chord member end junction, 7 extending direction of powerful muscle is the same with 5 directions of web member of 1 web member end of top connected node, bottom connected node 2's web member end and arc lower chord member end, straight line shape lower chord member end junction also are equipped with powerful muscle 7, 7 extending direction of powerful muscle is the same with 5 directions of web member of 2 web member ends of bottom connected node, and through setting up powerful muscle 7, the stress that web member 5 produced can effectually be decomposed, can effectively reduce the stress concentration problem of web member 5 and chord member end, further promote whole dysmorphism steel truss node structural strength.
Furthermore, the thickness of the arc-shaped angle chamfering plate 6 is not less than the thickness of the top connecting node 1 and the bottom connecting node 2, so that the strength of the arc-shaped angle chamfering plate 6 can be effectively increased.
Further, arc lower chord 3 and straight line shape lower chord 4 are the box structure for the cross-section, and the box structure is comparatively firm on the whole to stress concentration degree is also less.
Furthermore, one web rod end in the top connecting node 1 is perpendicular to the tangent line of the circular arc-shaped structure, and the other two web rod ends are symmetrically arranged at the web rod end perpendicular to the tangent line, so that the stress distribution of the top connecting node 1 is uniform, and the service life of the special-shaped steel truss node structure can be effectively prolonged.
Further, the web rod end on the bottom connected node 2 is mutually perpendicular with the straight line shape lower chord rod end on the bottom connected node 2, the straight line shape lower chord rod end level on the bottom connected node 2 sets up, and straight line shape lower chord 4 is used for transmitting the produced stress of arc lower chord 3, because arc lower chord 3 has certain angle with straight line shape lower chord 4, the bottom connected node 2 can produce certain deformation when transmitting power, can prevent bottom connected node 2 through web member 5 and web member fixed connection and warp.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A deformed steel truss node structure, comprising: the top connecting node is provided with two chord ends and three web rod ends, the bottom connecting node is provided with an arc lower chord end, a linear lower chord end and a web rod end, the chord rod end of the top connecting node is fixedly connected with one end of the arc lower chord, the three web rod ends of the top connecting node are fixedly connected with the web rod, the other end of the arc lower chord is fixedly connected with the arc lower chord end of the bottom connecting node, the linear lower chord end of the bottom connecting node is fixedly connected with the linear lower chord, the web rod end of the bottom connecting node is fixedly connected with the web rod, the top connecting node, the arc lower chord and the bottom connecting node form an arc-shaped structure together, and arc chamfering plates are arranged at the joints of the web rod end of the bottom connecting node, the arc lower chord end and the linear lower chord end, and an arc-shaped chamfering plate is also arranged at the joint of the web rod end and the chord rod end of the top connecting node.
2. The deformed steel truss node structure of claim 1, wherein the fixed connection is a full penetration welded fixed connection.
3. The special-shaped steel truss joint structure as claimed in claim 1, wherein a rib is arranged at the joint of the web member and the chord member end of the top connecting joint, the extending direction of the rib is the same as the web member direction of the web member end of the top connecting joint, the joints of the web member end of the bottom connecting joint, the arc-shaped lower chord member end and the straight-line-shaped lower chord member end are also provided with ribs, and the extending direction of the rib is the same as the web member direction of the web member end of the bottom connecting joint.
4. The deformed steel truss node structure of claim 1, wherein the chamfer radius of the curved chamfer is not less than 400mm, and the thickness of the curved chamfer is not less than the thickness of the top and bottom connection nodes.
5. The deformed steel truss node structure of claim 1, wherein the curved lower chords and the straight lower chords are box-shaped in cross section.
6. A profiled steel truss node structure as claimed in claim 1 wherein one web end of the top connecting node is perpendicular to the tangent of the circular arc shaped structure and the other two web ends are symmetrically arranged with the web end perpendicular to the tangent.
7. The profiled steel truss node structure of claim 1 wherein the web rod end on the bottom connecting node is perpendicular to the linear lower chord end on the bottom connecting node, the linear lower chord end on the bottom connecting node being horizontally disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920628273.9U CN210032329U (en) | 2019-05-05 | 2019-05-05 | Special-shaped steel truss node structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920628273.9U CN210032329U (en) | 2019-05-05 | 2019-05-05 | Special-shaped steel truss node structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210032329U true CN210032329U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920628273.9U Active CN210032329U (en) | 2019-05-05 | 2019-05-05 | Special-shaped steel truss node structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210032329U (en) |
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2019
- 2019-05-05 CN CN201920628273.9U patent/CN210032329U/en active Active
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