CN111441478A - Arch truss supporting large-span cable net structure - Google Patents
Arch truss supporting large-span cable net structure Download PDFInfo
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- CN111441478A CN111441478A CN202010347980.8A CN202010347980A CN111441478A CN 111441478 A CN111441478 A CN 111441478A CN 202010347980 A CN202010347980 A CN 202010347980A CN 111441478 A CN111441478 A CN 111441478A
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- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000010276 construction Methods 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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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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- 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
- E04B2001/3229—Arched structures; Vaulted structures; Folded structures constructed using a boom
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to the technical field of large-span structures, in particular to a large-span cable net structure supported by an arch truss. The arch truss supported large-span cable net structure comprises: the truss structure comprises an arch truss, a longitudinal connection truss and a cable net; the cable net is supported on the arch truss; the 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 arch trusses into an integral structure, and longitudinal horizontal force generated on the arch trusses by the cable nets is balanced, so that the integral structure forms a self-balancing system along the longitudinal direction.
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 an arch truss.
Background
The coal shed and the stock ground are facilities widely applied to the fields of electric power, steel and the like, and mainly play a role in 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, a standard arch truss 3 and a gable arch truss 6 are transversely arranged, the standard arch truss can be combined with prestressed cables to form a prestressed arch truss, and the gable arch truss 6 is 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 14, so that the structural integrity is ensured, and longitudinal loads are transmitted (shown in fig. 1). The 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. Therefore, from the perspective of reducing the construction cost and improving the construction efficiency, the invention of the novel structure system becomes an urgent need of engineering construction.
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 an arch truss so as to solve the 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 an arch truss, which comprises: the truss structure comprises an arch truss, a longitudinal connection truss and a cable net;
the cable net is supported on the arch truss;
the 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 arch trusses into an integral structure, and longitudinal horizontal force generated on the arch trusses by the cable nets is balanced, so that the integral structure forms a self-balancing system along the longitudinal direction.
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 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 basis of the longitudinal boundary of the large-span cable net structure.
As a further technical scheme, the distance between the adjacent arch trusses is large and can reach 50 m.
As a further technical scheme, the standard truss trusses are four-limb arch trusses.
As a further technical scheme, the standard truss is a three-leg truss.
As a further technical scheme, the standard truss is provided with a prestressed inhaul cable.
As a further technical scheme, the gable arch truss is a three-leg truss.
As a further technical scheme, the gable arch truss is a four-limb truss.
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 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.
3. 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.
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 long span cable mesh structure for an arch truss support of the present invention.
Fig. 3 is a front view of the long-span cable net structure of the arch truss support of the present invention.
Fig. 4 is a plan view of the long span cable net structure of the arch truss support of the present invention.
Fig. 5 is a schematic view of the cable net support system (i.e., arch truss) of the present invention.
Fig. 6 is a schematic view of a standard four-limb arch truss of the invention, wherein a prestressed stay cable is arranged.
Fig. 7 is a schematic view of a standard four-limb arch truss of the present invention, without prestressed guy cables.
Fig. 8 is a cross-sectional view of a standard four-limb arch truss of the invention.
Fig. 9 is a schematic view of a three-leg standard truss with prestressed guy cables.
Fig. 10 is a schematic view of a three-leg standard truss without prestressed guy cables.
Fig. 11 is a cross-sectional view of a three-leg standard truss.
Fig. 12 is a schematic view of a four-limb type gable support column of the present invention.
Fig. 13 is a schematic cross-sectional view of a four-limb type gable support column according to the present invention.
Fig. 14 is a schematic view of a three-leg type gable supporting post according to the present invention.
Fig. 15 is a schematic cross-sectional view of a three-leg type gable roof support column according to the present invention.
Fig. 16 is a schematic view of the cable net structure of the present invention.
Icon: the truss structure comprises arch trusses 1, cable nets 2, standard arch trusses 3, arch truss intervals 4, longitudinal connection trusses 5, gable arch trusses 6, gable support columns 7, prestressed stay cables 8, chord members 9, web members 10, bearing cables 11, wind resisting cables 12, side cables 13 and supporting members 14.
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.
Example one
Referring to fig. 2 to 16, the present embodiment provides an arch truss supported long-span cable net structure, which includes: the truss comprises an arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the arch truss. According to the structure, a framework is formed by a small number of transversely arranged arch trusses 1 and longitudinally arranged longitudinal connection trusses 5, a cable net system between the frameworks is supported, an efficient large-span structure is formed, and the number of steel members and installation and construction work such as on-site welding, hoisting, sliding and the like are greatly reduced.
Preferably, the arch truss 1 comprises a gable arch truss 6 and a standard arch truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected by a plurality of longitudinal connection trusses 5, and the distance between the arch trusses 1 and the number of the connection trusses 5 are determined by the load size and the structural performance target; the longitudinal connection truss 5 connects the arch trusses 1 into a whole to form a stable structural system, and longitudinal horizontal force generated on the arch trusses by the bearing cables 11 is balanced, so that the whole structure forms a self-balancing system along the longitudinal direction.
Preferably, said cord net 2 comprises: the bearing cable 11, the wind resisting cable 12 and the side cable 13; the bearing cable 11 is supported on the arch truss 1; the wind resisting cable 12 is connected with the bearing cable 11 through a cable clamp; the side cable 13 is connected with the wind resisting cable 12 through a cable clamp; the side cable 13 is fixed on the basis of the longitudinal boundary of the large-span cable net structure. 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 the present embodiment uses fewer arch trusses 1 arranged in the transverse direction as vertical supporting structures, and uses the longitudinal connection trusses 5 to connect the arch trusses 1 out of the plane into a stable whole, wherein the distance 4 between the transversely arranged arch trusses is about 50m (the truss distance of the traditional prestressed arch truss structure is between 12m and 18 m). The method is characterized in that the arch truss 1 which is transversely arranged is taken as a boundary, an orthogonal cable net 2 is arranged between the arch truss 1 and the orthogonal cable net, a bearing cable 11 of the cable net 2 is supported on the arch truss 1, a wind resisting cable 12 is connected to a side cable 13, and the side cable 13 is fixed on the basis of a longitudinal boundary. The longitudinal connection truss 5 not only connects the transversely arranged arch trusses 1 into a whole, but also can balance the longitudinal horizontal force generated by the bearing cables 11 on the transversely arranged arch trusses, so that the structure forms a self-balancing system along the longitudinal direction.
Therefore, the long-span cable net structure supported by the arch truss has the following advantages:
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 longitudinal connection truss 5 of the invention balances the longitudinal horizontal force generated by the bearing cable 11, 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.
3. 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.
Example two
Referring to fig. 6, 7 and 8, the second embodiment provides a large-span cable net structure supported by arch trusses on the basis of the first embodiment, wherein the standard truss trusses 3 are four-limb arch trusses. Of course, the technical features disclosed in the first embodiment are also applicable to the second embodiment, and the technical features disclosed in the first embodiment are not repeated, and only the differences are described below.
The second embodiment provides a long-span cable net structure supported by an arch truss, which includes: the truss comprises an arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the arch truss 1. The arch truss 1 comprises a gable arch truss 6 and a standard arch truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected through a plurality of longitudinal connection trusses 5, and the standard arch truss 3 is a typical four-limb arch truss.
In particular, for the four-limb arch truss, the section of the four-limb arch truss comprises four chords 9 and web members 10 connecting the chords 9. The standard arch truss 3 may be provided with or without the prestressed cable 8. The method can be flexibly selected according to actual needs.
EXAMPLE III
With reference to fig. 9, 10 and 11, the third embodiment provides a large-span cable net structure supported by an arch truss on the basis of the first embodiment, wherein the standard truss 3 is a three-leg arch truss. Of course, the technical features disclosed in the first embodiment are also applicable to the third embodiment, and the technical features disclosed in the first embodiment are not repeated, and only the differences are described below.
The third embodiment provides a long-span cable net structure supported by an arch truss, which includes: the truss comprises an arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the arch truss 1. The arch truss 1 comprises a gable arch truss 6 and a standard arch truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected through a plurality of longitudinal connection trusses 5, and the standard arch truss 3 is a typical three-leg arch truss.
Specifically, for a three-leg arch truss, the cross-section of the three-leg arch truss includes three chords 9 and web members 10 connecting the chords 9. The standard arch truss 3 may be provided with or without the prestressed cable 8. The method can be flexibly selected according to actual needs.
Example four
With reference to fig. 14 and 15, in a fourth embodiment, a large-span cable net structure supported by a gable truss is provided on the basis of the first embodiment, wherein a gable truss 6 is a three-leg truss. Of course, the technical features disclosed in the first embodiment are also applicable to the fourth embodiment, and the technical features disclosed in the first embodiment are not repeated, and only the differences are described below.
The fourth embodiment provides a long-span cable net structure supported by an arch truss, which includes: the truss comprises an arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the arch truss 1. The arch truss comprises a gable arch truss 6 and a standard arch truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected by a plurality of longitudinal connection trusses 5, and specifically, the gable arch truss 6 is a three-leg truss and can be supported by a gable support column 7. The section of the three-leg truss comprises three chords 9 and web members 10 connecting the chords 9.
EXAMPLE five
With reference to fig. 12 and 13, a fifth embodiment provides a large-span cable net structure supported by arch trusses, in which the gable truss 6 is a four-limb truss, on the basis of the first embodiment. Of course, the technical features disclosed in the first embodiment are also applicable to the fifth embodiment, and the technical features disclosed in the first embodiment are not repeated, and only the differences are described below.
The fifth embodiment provides a long-span cable net structure supported by an arch truss, which includes: the truss comprises an arch truss 1, a longitudinal connection truss 5 and a cable net 2; the cable net 2 is supported on the arch truss 1. The arch truss comprises a gable arch truss 6 and a standard arch truss 3; the gable arch truss 6 and the standard arch truss 3 are longitudinally connected by a plurality of longitudinal connection trusses 5, and specifically, the gable arch truss 6 is a truss with four limbs and can be supported by a gable support column 7. The section of the four-limb arch truss comprises four chords 9 and web members 10 connected with the chords 9.
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 (8)
1. An arch truss supported long span cable net structure, comprising: the truss structure comprises an arch truss, a longitudinal connection truss and a cable net;
the cable net is supported on the arch truss;
the 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 arch trusses into an integral structure, and longitudinal horizontal force generated on the arch trusses by the cable nets is balanced, so that the integral structure forms a self-balancing system along the longitudinal direction.
2. An arch truss supported long span cable net structure of claim 1, wherein said cable net comprises: bearing cables, wind resisting cables and side cables;
the bearing cable is longitudinally supported on the 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 basis of the longitudinal boundary of the large-span cable net structure.
3. An arch truss supported long span cable network structure as claimed in claim 1, wherein the spacing between adjacent arch trusses can be up to 50 m.
4. An arch-truss supported large-span cable net structure according to claim 1, wherein said standard truss trusses are four-limb arch trusses.
5. An arch-truss supported large-span cable net structure according to claim 1, wherein said standard truss is a three-leg arch truss.
6. An arch truss supported large span cable net structure according to claim 4 or 5, wherein the standard truss trusses are provided with prestressed stay cables.
7. An arch-truss supported large-span cable net structure according to claim 1, wherein the gable truss is a three-leg truss.
8. An arch-truss supported large-span cable net structure according to claim 1, wherein the gable trusses are four-limb trusses.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113323138A (en) * | 2021-06-01 | 2021-08-31 | 华电重工股份有限公司 | Truss structure |
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RU2414559C1 (en) * | 2009-11-05 | 2011-03-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" | Bridge span |
CN207419704U (en) * | 2017-09-18 | 2018-05-29 | 清华大学 | A kind of self-balancing cable net structure that can mitigate wind load |
CN110886532A (en) * | 2019-11-26 | 2020-03-17 | 北京工业大学 | Large-span bidirectional arch truss cable membrane material field closed structure system |
CN212613034U (en) * | 2020-04-28 | 2021-02-26 | 北京市建筑设计研究院有限公司 | Arch truss supporting large-span cable net structure |
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2020
- 2020-04-28 CN CN202010347980.8A patent/CN111441478A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2414559C1 (en) * | 2009-11-05 | 2011-03-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" | Bridge span |
CN207419704U (en) * | 2017-09-18 | 2018-05-29 | 清华大学 | A kind of self-balancing cable net structure that can mitigate wind load |
CN110886532A (en) * | 2019-11-26 | 2020-03-17 | 北京工业大学 | Large-span bidirectional arch truss cable membrane material field closed structure system |
CN212613034U (en) * | 2020-04-28 | 2021-02-26 | 北京市建筑设计研究院有限公司 | Arch truss supporting large-span cable net structure |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113323138A (en) * | 2021-06-01 | 2021-08-31 | 华电重工股份有限公司 | Truss structure |
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