CN215630620U - Large-span fish belly type inverted triangular steel truss - Google Patents
Large-span fish belly type inverted triangular steel truss Download PDFInfo
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- CN215630620U CN215630620U CN202121991023.5U CN202121991023U CN215630620U CN 215630620 U CN215630620 U CN 215630620U CN 202121991023 U CN202121991023 U CN 202121991023U CN 215630620 U CN215630620 U CN 215630620U
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Abstract
The utility model discloses a large-span fish belly type inverted triangular steel truss which comprises an upper chord member, a lower chord member, a middle chord member, a transverse horizontal web member, a vertical web member, a transverse inclined web member, a longitudinal inclined web member and a cast steel connecting member. The utility model has the beneficial effects that: the upper chord and the lower chord connected above and below the single truss are rigidly combined with the box-type steel beams on two sides, and the stability of the triangle is utilized, so that the integral torsional deformation is effectively resisted, and the overturning is prevented; the single truss is provided with various different variable cross-section shapes, and the fish-bellied-shaped appearance steel truss structure is formed by rigidly connecting the upper chord, the lower chord and the middle chord, accords with the distribution rule of bending moment, is reasonable in stress, has stronger rigidity and stability, and is suitable for large-span and large-tonnage steel structures.
Description
Technical Field
The utility model relates to a steel truss, in particular to a large-span fish-bellied inverted triangular steel truss, and belongs to the technical field of building construction and installation.
Background
With the vigorous development of the high-speed rail industry in China, the truss structure is rich in appearance, light and handy in structure, convenient to manufacture and install and good in economic effect, the large-span steel truss structure gradually becomes the main structural form of a large-scale public building and a novel roof system and is widely applied to engineering construction, the truss structure is a combined structural system, each combined truss is symmetrically distributed along the central axis, the middle of the middle roof combined truss is high, the two sides of the middle roof combined truss are upwarped, the upper parts of the roof combined trusses on the east and west sides are a plane, longitudinal and transverse single fish-bellied pipe trusses are contained in the combined trusses, and the two sides are variable-section welded box-type steel beams.
When the existing steel truss is installed and constructed, the large-span and large-tonnage roof truss cannot be installed in a limited space in a narrow space, and in the installation and construction, the number of parts needing to be welded in field construction is large, so that the construction progress is slow, the whole torsional deformation cannot be well resisted, and the overturning is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a large-span fish-bellied inverted triangular steel truss in order to solve the problem.
The utility model realizes the purpose through the following technical scheme: a large-span fish belly type inverted triangular steel truss comprises
A plurality of single row frames which are arranged in an inverted triangle shape and form the steel truss by splicing;
the upper chord members are in a circular tube shape and are positioned above the steel truss, and two ends of the adjacent upper chord members are rigidly connected through cast steel connecting pieces;
the lower chord members are in a circular tube shape and are positioned below the steel truss, and two ends of the adjacent lower chord members are rigidly connected through cast steel connecting pieces;
the middle chord members are in a circular tube shape, and two ends of the adjacent middle chord members are rigidly connected through cast steel connecting pieces;
the web member assembly is provided with a plurality of web members in a sheet shape, and the web members are rigidly connected to the cast steel connecting piece to form a single truss.
As a still further scheme of the utility model: the upper chord members are arranged on the same plane and are supported by transverse tie bars through the transverse horizontal web members of the web member assemblies.
As a still further scheme of the utility model: the lower chord is connected through cast steel connecting pieces to form an arc-shaped structure which is concave upwards, and vertical tie supporting is carried out between the lower chord and the upper chord through a vertical web member of the web member assembly.
As a still further scheme of the utility model: the middle chord is connected through cast steel connecting pieces to form an arc-shaped structure which is concave upwards, the vertical web members and the transverse inclined web members of the web member assemblies are used for pulling and supporting between the middle chord and the upper chord on the transverse surface, and the transverse inclined web members of the web member assemblies are used for pulling and supporting between the middle chord and the lower chord on the transverse surface.
As a still further scheme of the utility model: and the upper chord member, the lower chord member and the middle chord member are all tied and supported on the longitudinal surface through longitudinal inclined web members.
As a still further scheme of the utility model: the upper chord and the lower chord connected to the upper and lower sides of the single truss are rigidly combined with the box-type steel beams on two sides.
As a still further scheme of the utility model: the single truss is provided with various different variable cross-section shapes, and forms a fish belly type appearance steel truss structure through rigid connection of the upper chord, the lower chord and the middle chord.
The utility model has the beneficial effects that:
1. the upper chord and the lower chord connected above and below the single truss are rigidly combined with the box-type steel beams on two sides, and the stability of the triangle is utilized, so that the integral torsional deformation is effectively resisted, and the overturning is prevented;
2. the single truss is provided with various different variable cross-section shapes, and the fish-bellied-shaped appearance steel truss structure is formed by rigidly connecting the upper chord, the lower chord and the middle chord, accords with the distribution rule of bending moment, is reasonable in stress, has stronger rigidity and stability, and is suitable for large-span and large-tonnage steel structures.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a single row frame structure according to the present invention;
FIG. 3 is a schematic view of the longitudinal connection structure of the upper chord and the lower chord of the present invention;
FIG. 4 is a schematic view of the longitudinal connection structure of the upper chord and the middle chord of the present invention.
In the figure: 1. upper chord 2, lower chord 3, middle chord 4, horizontal web member 5, vertical web member 6, horizontal inclined web member 7, longitudinal inclined web member 8 and cast steel connecting member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-4, a large span fish belly type inverted triangle steel truss includes
A plurality of single row frames which are arranged in an inverted triangle shape and form the steel truss by splicing;
the upper chord member 1 is in a circular tube shape and is positioned above the steel truss, and two ends of the adjacent upper chord members 1 are rigidly connected through cast steel connecting pieces 8;
the lower chord 2 is in a circular tube shape and is positioned below the steel truss, and two ends of the adjacent lower chord 2 are rigidly connected through a cast steel connecting piece 8;
the middle chord 3 is in a circular tube shape, and two ends of the adjacent middle chord 3 are rigidly connected through a cast steel connecting piece 8;
and a plurality of web members which are arranged in a sheet shape and are rigidly connected to the cast steel connecting piece 8 to form a single truss.
In the embodiment of the present invention, a plurality of upper chords 1 are arranged on the same plane, and are transversely tied and supported by the transverse horizontal web members 4 of the web member assembly.
In the embodiment of the utility model, the lower chord 2 is connected through a cast steel connecting piece 8 to form an arc-shaped structure which is concave upwards, and the vertical tie support is carried out between the lower chord 2 and the upper chord 1 through the vertical web member 5 of the web member assembly.
In the embodiment of the utility model, the middle chord 3 is connected through a cast steel connecting piece 8 to form an arc-shaped structure which is concave upwards, the middle chord 3 and the upper chord 1 are supported in a pulling mode on the transverse plane through the vertical web members 5 and the transverse inclined web members 6 of the web member assembly, and the middle chord 3 and the lower chord 2 are supported in a pulling mode on the transverse plane through the transverse inclined web members 6 of the web member assembly.
In the embodiment of the utility model, the upper chord 1, the lower chord 2 and the middle chord 3 are supported in a pulling mode through longitudinal inclined web members 7 on the longitudinal surface.
Example two
Referring to fig. 1-4, a large span fish belly type inverted triangle steel truss includes
A plurality of single row frames which are arranged in an inverted triangle shape and form the steel truss by splicing;
the upper chord member 1 is in a circular tube shape and is positioned above the steel truss, and two ends of the adjacent upper chord members 1 are rigidly connected through cast steel connecting pieces 8;
the lower chord 2 is in a circular tube shape and is positioned below the steel truss, and two ends of the adjacent lower chord 2 are rigidly connected through a cast steel connecting piece 8;
the middle chord 3 is in a circular tube shape, and two ends of the adjacent middle chord 3 are rigidly connected through a cast steel connecting piece 8;
and a plurality of web members which are arranged in a sheet shape and are rigidly connected to the cast steel connecting piece 8 to form a single truss.
In the embodiment of the utility model, the upper chord 1 and the lower chord 2 connected above and below the single truss are rigidly combined with the box-type steel beams on two sides, and the triangle has stability, so that the integral torsional deformation is effectively resisted, and the overturning is prevented.
In the embodiment of the utility model, the single truss is provided with various different variable cross-section shapes, and the fish-bellied-shaped appearance steel truss structure is formed by rigidly connecting the upper chord 1, the lower chord 2 and the middle chord 3, so that the steel truss structure accords with the bending moment distribution rule, is reasonable in stress, has higher rigidity and stability, and is suitable for large-span and large-tonnage steel structures.
The working principle is as follows: the upper chord 1 is located above, the lower chord 2 is located below, the upper chord 1, the lower chord 2 and the plurality of flaky web members rigidly connected with the middle chord 3 form an integral truss, the plurality of upper chord 1, the lower chord 2, the middle chord 3 and the cast steel connecting piece 8 are assembled in situ, then the web members are assembled, and finally the fish-belly truss is formed by a plurality of flaky inverted triangles with different variable cross sections.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a large-span fish belly formula inverted triangle steel truss which characterized in that: comprises that
A plurality of single row frames which are arranged in an inverted triangle shape and form the steel truss by splicing;
the upper chord (1) is in a circular tube shape and is positioned above the steel truss, and two ends of the adjacent upper chord (1) are rigidly connected through a cast steel connecting piece (8);
the lower chord (2) is in a circular tube shape and is positioned below the steel truss, and two ends of the adjacent lower chord (2) are rigidly connected through a cast steel connecting piece (8);
the middle chord members (3) are in a circular tube shape, and two ends of the adjacent middle chord members (3) are rigidly connected through cast steel connecting pieces (8);
the web member assembly is provided with a plurality of web members in a sheet shape, and the web members are rigidly connected on the cast steel connecting piece (8) to form a single truss.
2. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: the upper chord members (1) are arranged on the same plane and are supported by transverse horizontal web members (4) of the web member assemblies in a transverse tie mode.
3. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: the lower chord (2) is connected through a cast steel connecting piece (8) to form an arc-shaped structure which is concave upwards, and vertical tie supporting is carried out between the lower chord (2) and the upper chord (1) through a vertical web member (5) of the web member assembly.
4. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: the middle chord member (3) is connected through a cast steel connecting member (8) to form an arc-shaped structure which is concave upwards, the middle chord member (3) and the upper chord member (1) are connected on a transverse surface through a vertical web member (5) and a transverse inclined web member (6) of a web member assembly to be supported in a pulling mode, and the middle chord member (3) and the lower chord member (2) are connected on the transverse surface through the transverse inclined web member (6) of the web member assembly to be supported in a pulling mode.
5. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: and the upper chord (1), the lower chord (2) and the middle chord (3) are supported on the longitudinal surface through the longitudinal inclined web members (7).
6. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: the upper chord (1) and the lower chord (2) connected to the upper and lower sides of the single truss are rigidly combined with the box-type steel beams on the two sides.
7. The large-span fish belly type inverted triangle steel truss according to claim 1, wherein: the single truss is provided with various different variable cross-section shapes, and a fish-bellied-shaped appearance steel truss structure is formed by rigidly connecting the upper chord (1), the lower chord (2) and the middle chord (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121991023.5U CN215630620U (en) | 2021-08-24 | 2021-08-24 | Large-span fish belly type inverted triangular steel truss |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121991023.5U CN215630620U (en) | 2021-08-24 | 2021-08-24 | Large-span fish belly type inverted triangular steel truss |
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| CN215630620U true CN215630620U (en) | 2022-01-25 |
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| CN202121991023.5U Active CN215630620U (en) | 2021-08-24 | 2021-08-24 | Large-span fish belly type inverted triangular steel truss |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045522A (en) * | 2022-07-29 | 2022-09-13 | 中铁建工集团有限公司 | Thermoelectric effect based cooling device and method for large-span steel structure |
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2021
- 2021-08-24 CN CN202121991023.5U patent/CN215630620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045522A (en) * | 2022-07-29 | 2022-09-13 | 中铁建工集团有限公司 | Thermoelectric effect based cooling device and method for large-span steel structure |
| CN115045522B (en) * | 2022-07-29 | 2023-12-26 | 中铁建工集团有限公司 | Cooling device and method of large-span steel structure based on thermoelectric effect |
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