CN111749337A - Large-span cable net structure supported by self-balancing arch truss - Google Patents
Large-span cable net structure supported by self-balancing arch truss Download PDFInfo
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- CN111749337A CN111749337A CN202010773686.3A CN202010773686A CN111749337A CN 111749337 A CN111749337 A CN 111749337A CN 202010773686 A CN202010773686 A CN 202010773686A CN 111749337 A CN111749337 A CN 111749337A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B1/3205—Structures with a longitudinal horizontal axis, e.g. cylindrical or prismatic structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
- E04B7/105—Grid-like structures
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Abstract
The invention relates to the technical field of large-span structures, in particular to a large-span cable net structure supported by a self-balancing arch truss. The structure utilizes a small number of transversely arranged self-balancing arch trusses and longitudinally arranged longitudinal connection trusses to form a framework, supports a cable net system between the frameworks, forms an efficient large-span structure, and greatly reduces the number of steel members and installation and construction work such as on-site welding, hoisting, sliding and the like. The structure is supported on concrete columns or steel columns, which can provide sufficient space for the operation of the equipment. The arched truss support slides along the transverse direction, the transverse deformation of the arched truss is restrained through the transverse steel cable at the support, the arched truss has the stress characteristic of an arch under the action of downward load, and the arched truss does not generate transverse horizontal thrust on the lower column.
Description
Technical Field
The invention relates to the technical field of large-span structures, in particular to a large-span cable net structure supported by a self-balancing arch truss.
Background
At present, a coal shed and a stock ground are facilities widely applied in the fields of electric power, steel and the like, and the coal shed and the stock ground mainly have the functions of shielding a coal yard and an ore stock ground and reducing environmental pollution.
In the aspect of a structural system, a large-span coal shed and a large-span stock ground mainly adopt a prestressed arch truss structure. In the structure, standard arch trusses 3 and gable arch trusses 6 are transversely arranged, the standard arch trusses can be combined with prestressed steel cables to form prestressed arch trusses, and the gable arch trusses 6 are supported by gable columns 7. The longitudinal tie girders are arranged in the longitudinal direction, and a support system is formed by the longitudinal tie girders 5 and the support members, so that the structural integrity is ensured, and longitudinal loads are transmitted (shown in fig. 1). The floor prestressed arch truss supports purlins, color steel plates or membrane structure roofs. The advantage of this design is the simplicity of design, but the following disadvantages exist: the truss interval is 12m-18m, the interval is small, the number of components is large, the types of sections are various, the number of foundations is large, the on-site welding amount is large, the installation workload is large, the installation period is long, and the construction cost is high. In addition, the ground prestressed arch truss has limited clearance height at the arch feet, and the operation of equipment (such as a portal bucket wheel machine) is influenced.
In summary, the engineering construction needs to invent a new structure system which takes the engineering cost, the construction efficiency and the equipment operation space into consideration.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a large-span cable net structure supported by a self-balancing arch truss so as to solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a large-span cable net structure supported by a self-balancing arch truss, which comprises: the self-balancing truss type steel truss structure comprises columns, self-balancing arch trusses, longitudinal connection trusses and cable nets;
the cable net is supported on the self-balancing arch truss;
the self-balancing arched truss is supported on the column through a support, a connecting member for fixing chord rods of the self-balancing arched truss is arranged on the support, the support is provided with a horizontal sliding mechanism, and the arched truss can slide relatively on the top end face of the column;
the self-balancing arch truss comprises a gable arch truss and a standard arch truss; the gable arch truss and the standard arch truss are longitudinally connected by a plurality of longitudinal connection trusses; the longitudinal connection truss connects the self-balancing arch truss into an integral structure, and longitudinal horizontal force generated on the arch truss by the cable net is balanced, so that the integral structure forms a self-balancing system along the longitudinal direction.
As a further technical solution, the mount includes: the device comprises an arch truss connecting part, a sliding mechanism and a column top connecting part;
the arch truss connecting part is connected with the chord members of the arch truss;
the column top connecting part is connected with the top of the vertical column;
the arch truss connecting part and the column top connecting part are connected through a sliding mechanism.
As a further technical scheme, a plurality of support rods are transversely connected to the self-balancing arch truss;
the plurality of support rods are connected through inhaul cables.
As a further technical solution, the end of the pulling cable is connected to the support.
As a further technical scheme, the end part of the stay cable is connected with the lower chord of the self-balancing arched truss close to the support.
As a further technical scheme, the columns are connected through cross beams among the columns;
and an inter-column support is arranged between the columns.
As a further technical solution, the column is a concrete column.
As a further technical solution, the column is a lattice steel column.
As a further technical solution, the cable net includes: bearing cables, wind resisting cables and side cables;
the bearing cable is longitudinally supported on the self-balancing arch truss;
the wind resisting cable is transversely interwoven with the bearing cable to form a net;
the wind-resistant cable is connected with the bearing cable through a cable clamp;
the side cable is connected with the wind resisting cable through a cable clamp;
the side cable is fixed on the outermost side longitudinal connection truss.
As a further technical scheme, the distance between the adjacent standard arched trusses can reach 50 m.
By adopting the technical scheme, the invention has the following beneficial effects:
1. compared with a prestressed arch truss structure, the steel structure provided by the invention has the advantages that the number of steel members is small, the high-strength characteristic of the steel cable can be fully exerted, the material utilization rate is high, and the economic performance is good.
2. The arched truss support disclosed by the invention slides along the transverse direction, the transverse deformation of the arched truss is restrained by the transverse steel cable at the support, the arched truss has the stress characteristic of an arch under the action of downward load, and the arched truss does not generate transverse horizontal thrust on the lower column.
3. The longitudinal connection truss of the invention balances the longitudinal horizontal force generated by the bearing cable, the structure forms a self-balancing system along the longitudinal direction, and a system for balancing the longitudinal horizontal force generated by the cable net does not need to be specially arranged outside the building.
4. After reasonable arrangement and design are adopted, the installation amount, the welding amount and the earth volume of a construction site are obviously reduced compared with those of the traditional structure, and the construction efficiency is obviously improved.
5. Compared with a prestressed arch truss structure, the invention has wider application range to equipment in a field.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a prior art pre-stressed arch truss structure;
FIG. 2 is an isometric view of a large-span cable-mesh structure of a self-balancing arch truss support of the present invention;
FIG. 3 is a front view of a large span cable net structure of the self-balancing arch truss support of the present invention;
FIG. 4 is a plan view of a large span cable net structure of the self-balancing arch truss support of the present invention;
FIG. 5 is a schematic view of a self-balancing arched truss of the present invention;
FIG. 6 is a schematic view of a self-balancing arched truss of a standard truss of the present invention;
FIG. 7 is a schematic view of a self-balancing arched truss for a gable roof truss according to the present invention;
FIG. 8 is a schematic cross-sectional view of a self-balancing arch truss of the present invention, wherein the truss is a four-limb arch truss;
FIG. 9 is a schematic cross-sectional view of a self-balancing arch truss of the present invention, wherein a three-leg arch truss is shown;
FIG. 10 is a schematic view of the lower column structure of the present invention;
FIG. 11 is a schematic view of a cable net structure according to the present invention;
fig. 12 is a schematic view of the connection joint of the self-balancing arch truss and the lower column.
Icon: the self-balancing truss type steel truss structure comprises a self-balancing arch truss 1, a cable net 2, a standard arch truss 3, a standard arch truss interval 4, a longitudinal connection truss 5, a gable arch truss 6, a gable post 7, a gable post 8, a stay cable 9, a stay rod 10, a post 11, a chord 12, a web member 12, an inter-post beam 13, an inter-post support 14, a concrete post 15, a lattice type steel post 16, a bearing cable 17, a wind resisting cable 18, a side cable 19 and a support 20.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 2 to 12, the present embodiment provides a self-balancing arch truss supported long-span cable net structure, which includes: the self-balancing truss type steel truss structure comprises columns 10, a self-balancing arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the self-balancing arched truss 1; according to the structure, a framework is formed by a small number of transversely arranged self-balancing arch trusses 1 and longitudinally arranged longitudinal connection trusses 5, a cable net 2 system is supported between the frameworks, an efficient large-span structure is formed, and the number of steel members and installation and construction work such as on-site welding, hoisting and sliding are greatly reduced.
The self-balancing arched truss 1 is supported on the column 10 through a support 20, the support 20 is provided with a disc base, the bottom end face of the disc base is a smooth face, the top end face of the column 10 is a smooth face, the disc base can slide relatively on the top end face of the column 10, and a welding part for fixing the end part of the self-balancing arched truss 1 is arranged on the disc base; the self-balancing arched girders are supported from the lower concrete columns 15 or steel columns by means of supports 20, the supports 20 being in the form of lateral sliding, lateral horizontal forces not being transmitted to the columns. Horizontal prestressed steel cables are transversely arranged at the arched truss support 20 to balance the transverse horizontal thrust of the arched truss.
The self-balancing arched truss 1 comprises a gable arched truss 6 and a standard arched truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected by a plurality of longitudinal connection trusses 5; the standard arched trusses 3 are supported by columns. Of course, the gable truss 6 is supported by the gable post 7. The longitudinal connection truss 5 connects the self-balancing arch truss 1 into an integral structure and balances the longitudinal horizontal force generated by the cable net 2 on the arch truss, so that the integral structure forms a self-balancing system along the longitudinal direction.
In this embodiment, as a further technical solution, the support includes: the device comprises an arch truss connecting part, a sliding mechanism and a column top connecting part; the arched truss chord members are connected to the arched truss connecting parts; the column top connecting part is connected to the vertical column top; the arch truss can slide relative to the vertical column. Of course, the specific form of the support is not limited.
For example: the support may employ a disc base, wherein the disc base includes: an upper circular portion, a lower circular portion and a plurality of rib members; the upper circular ring part is connected with the lower circular ring part through a plurality of rib components; a ball head welding part is arranged on the upper circular part; the bottom end face of the lower circular ring part is a smooth face. Of course, other forms for the support are possible, which are not listed here.
In this embodiment, as a further technical solution, the self-balancing arched truss 1 is transversely connected with a plurality of struts 9; the plurality of stay bars 9 are connected through inhaul cables 8. The end of the pull cable 8 is connected to the support 20. Of course, the end of the pulling cable 8 can also be connected to the lower chord of the self-balancing arched truss 1 close to the support 20, if conditions do not allow this.
In this embodiment, as a further technical solution, the columns 10 are connected to the columns 10 through inter-column beams 13; an inter-column support 14 is provided between the columns 10 and 10.
In this embodiment, as a further technical solution, the column is a concrete column 15.
In this embodiment, as a further technical solution, the column is a lattice type steel column 16.
In this embodiment, as a further technical solution, the cable net 2 includes: a bearing cable 17, an anti-wind cable 18 and a side cable 19; the bearing cable 17 is supported on the self-balancing arched truss 1 along the longitudinal direction; the wind resisting cables 18 are transversely interwoven with the bearing cables 17 to form a net shape; the wind resisting cable 18 is connected with the bearing cable 17 through a cable clamp; the side cable 19 is connected with the wind resisting cable 18 through a cable clamp; the edge cables 19 are fixed to the outermost longitudinal contact girders 5. The cable net 2 is prestressed to provide rigidity and load-bearing capacity to the structure, the level of prestressing being determined by the load to which the structure is subjected and the performance target of the structure. It can be seen that in the present embodiment, a few arch trusses are arranged in the transverse direction as vertical supporting structures, and the arch trusses are connected outside the plane by using longitudinal connection trusses 5 to form a stable whole, wherein the distance between the transversely arranged arch trusses (3-4 between the standard arch trusses) is about 50m (the distance between the trusses of the traditional prestressed arch truss structure is 12-18 m).
In this embodiment, the self-balancing arch truss 1 includes a gable arch truss 6 and a standard arch truss 3, wherein the self-balancing arch truss 1 may be a three-leg arch truss or a four-leg arch truss. That is, according to the specific conditions of span, load, etc., the self-balancing arched truss can adopt a three-limb arched truss or a four-limb arched truss, and the column can adopt a concrete column or a steel column. And pull rods or cross beams can be additionally arranged among the columns according to performance requirements. This patent is at vertical both sides for gable arch truss, can adopt solid web steel column or lattice steel column supporting gable arch truss, reduces gable arch truss's span, reduces gable arch truss and uses the steel volume. And determining the prestress level of the cable net according to the structural rigidity performance requirement.
Wherein, the section of the four-limb arch truss comprises four chords 11 and web members 12 connected with the chords 11.
Wherein, the section of the three-limb arch truss comprises three chords 11 and web members 12 connected with the chords 11.
In summary, by adopting the technical scheme, the invention has the following beneficial effects:
1. compared with a prestressed arch truss structure, the steel structure provided by the invention has the advantages that the number of steel members is small, the high-strength characteristic of the steel cable can be fully exerted, the material utilization rate is high, and the economic performance is good.
2. The arched truss support 20 slides along the transverse direction, the transverse deformation of the arched truss is restrained by the transverse steel cable at the support 20, the arched truss has the stress characteristic of an arch under the action of downward load, and the arched truss does not generate transverse horizontal counter force on a lower column.
3. The longitudinal connection truss 5 of the invention balances the longitudinal horizontal force generated by the bearing cable 17, the structure forms a self-balancing system along the longitudinal direction, and a system for balancing the longitudinal horizontal force generated by the cable net 2 is not required to be specially arranged outside the building.
4. After reasonable arrangement and design are adopted, the installation amount, the welding amount and the earth volume of a construction site are obviously reduced compared with those of the traditional structure, and the construction efficiency is obviously improved.
5. Compared with a prestressed arch truss structure, the invention has wider application range to equipment in a field.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A self-balancing arch truss supported long span cable net structure, comprising: the self-balancing truss type steel truss structure comprises columns, self-balancing arch trusses, longitudinal connection trusses and cable nets;
the cable net is supported on the self-balancing arch truss;
the self-balancing arched truss is supported on the column through a support, the support is provided with a mechanism which horizontally slides along the span direction, and the support can enable the self-balancing arched truss to relatively slide on the top end face of the column;
the self-balancing arch truss comprises a gable arch truss and a standard arch truss; the gable arch truss and the standard arch truss are longitudinally connected by a plurality of longitudinal connection trusses; the longitudinal connection truss connects the self-balancing arch truss into an integral structure, and longitudinal horizontal force generated on the arch truss by the cable net is balanced, so that the integral structure forms a self-balancing system along the longitudinal direction.
2. The self-balancing arch truss supported long-span cable network structure of claim 1, wherein said support comprises: an arch truss connection part, a sliding mechanism and a column top connection part;
the arch truss connecting part is connected with the arch truss chord member;
the column top connecting part is connected with the top end of the column;
the sliding mechanism is positioned between the arch truss connecting part and the column top connecting part and provides a horizontal sliding function.
3. The self-balancing arch truss supported long-span cable net structure of claim 1, wherein the self-balancing arch truss is transversely connected with a plurality of support rods;
the plurality of support rods are connected through inhaul cables.
4. The self-balancing arch truss supported long span cable net structure of claim 3, wherein the ends of said cables are connected to said support.
5. The self-balancing arched truss supported long-span cable net structure of claim 3, wherein the ends of the cables are connected to the lower chord of the self-balancing arched truss near the support.
6. The self-balancing arch truss supported long-span cable network structure of claim 1, wherein the columns are connected by inter-column beams;
and an inter-column support is arranged between the columns.
7. The self-balancing arch truss supported long span cable network structure of claim 1, wherein the column is a concrete column.
8. The self-balancing arch truss supported long span cable network structure of claim 1, wherein the columns are lattice steel columns.
9. The self-balancing arch truss supported long span cable net structure of claim 1, wherein the cable net comprises: bearing cables, wind resisting cables and side cables;
the bearing cable is longitudinally supported on the self-balancing arch truss;
the wind resisting cable is transversely interwoven with the bearing cable to form a net;
the wind-resistant cable is connected with the bearing cable through a cable clamp;
the side cable is connected with the wind resisting cable through a cable clamp;
the side cable is fixed on the outermost side longitudinal connection truss.
10. The self-balancing arch truss-supported large-span cable net structure of claim 1, wherein the distance between adjacent standard arch trusses can reach 50 m.
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| CN202010773686.3A CN111749337A (en) | 2020-08-04 | 2020-08-04 | Large-span cable net structure supported by self-balancing arch truss |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010773686.3A CN111749337A (en) | 2020-08-04 | 2020-08-04 | Large-span cable net structure supported by self-balancing arch truss |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431194A (en) * | 2021-06-09 | 2021-09-24 | 中交第四公路工程局有限公司 | Large-span inclined leg steel pipe truss structure and construction method thereof |
| CN114673354A (en) * | 2022-04-19 | 2022-06-28 | 中建八局总承包建设有限公司 | Construction method of complex curved surface concrete thin shell structure adopting cable mesh fabric template |
| CN115059179A (en) * | 2022-06-30 | 2022-09-16 | 中国能源建设集团湖南省电力设计院有限公司 | Large-span column/cable truss net structure |
| CN115324360A (en) * | 2022-07-27 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Construction method of large-span suspended truss |
| CN115419289A (en) * | 2022-08-30 | 2022-12-02 | 华光环保能源(西安)设计研究院有限公司 | Roof transformation steel column multipoint supporting structure and roof transformation method |
| CN115929075A (en) * | 2023-01-06 | 2023-04-07 | 中建八局第二建设有限公司 | Upper bearing type steel net rack reinforcing system |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431194A (en) * | 2021-06-09 | 2021-09-24 | 中交第四公路工程局有限公司 | Large-span inclined leg steel pipe truss structure and construction method thereof |
| CN114673354A (en) * | 2022-04-19 | 2022-06-28 | 中建八局总承包建设有限公司 | Construction method of complex curved surface concrete thin shell structure adopting cable mesh fabric template |
| CN115059179A (en) * | 2022-06-30 | 2022-09-16 | 中国能源建设集团湖南省电力设计院有限公司 | Large-span column/cable truss net structure |
| CN115059179B (en) * | 2022-06-30 | 2023-11-24 | 中国能源建设集团湖南省电力设计院有限公司 | Large-span column/cable truss structure |
| CN115324360A (en) * | 2022-07-27 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Construction method of large-span suspended truss |
| CN115419289A (en) * | 2022-08-30 | 2022-12-02 | 华光环保能源(西安)设计研究院有限公司 | Roof transformation steel column multipoint supporting structure and roof transformation method |
| CN115929075A (en) * | 2023-01-06 | 2023-04-07 | 中建八局第二建设有限公司 | Upper bearing type steel net rack reinforcing system |
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