CN214885910U - Stadium super large span PTFE membrane structure - Google Patents
Stadium super large span PTFE membrane structure Download PDFInfo
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- CN214885910U CN214885910U CN202022907029.1U CN202022907029U CN214885910U CN 214885910 U CN214885910 U CN 214885910U CN 202022907029 U CN202022907029 U CN 202022907029U CN 214885910 U CN214885910 U CN 214885910U
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- 239000012528 membrane Substances 0.000 title claims abstract description 75
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000010276 construction Methods 0.000 claims abstract description 33
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 8
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 4
- 101150097977 arch-1 gene Proteins 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000013519 translation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000384 rearing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a stadium super-large span PTFE membrane structure, which comprises a steel arch frame and a membrane roof, wherein the membrane roof is made of membrane units; the membrane unit is connected with an aluminum alloy casting and a U-shaped piece through a membrane structure arch arranged on the membrane unit, and is connected with the steel arch. During the installation the utility model discloses a steel bow member ground imbeds fixture mode in advance, avoids aluminum alloy fixture high altitude installation, reduces construction process, and the combination formula is hoisted, and the construction progress improves by a wide margin. The automatic cutting machine and the automatic heat sealing machine are combined for use, high-precision processing and blanking are achieved, and the integral forming quality of the film unit is guaranteed to meet the design requirements.
Description
Technical Field
The utility model relates to a field of rearing super large span PTFE membrane structure belongs to building engineering technical field.
Background
With the social progress and the continuous improvement of the living standard of people, in order to meet the increasing demands of the physical and cultural activities of people, a plurality of large-scale and large-scale public buildings with special modeling are successively built around the world, and a plurality of structural forms are derived from the roof structural engineering of the stadium. Big space public building mostly adopts curved surface rack and large-span steel structure structural style, rack surface course decoration engineering is mostly curved surface dysmorphism design, the utility model discloses a utility model patent that publication number is CN105089152A among the prior art discloses a large-scale bifurcated post and complicated curved surface rack reverse construction method installation construction method, the cross construction including the construction of a unit curved surface section and each installation district section, adopt finite element analysis software Midas to carry out overall process simulation analysis to whole work progress before the construction, optimize the construction scheme through the analysis, and strengthen or replace the great member of stress in the work progress analysis. The reverse construction method for mounting the large bifurcated column and the complex curved-surface net rack is suitable for a roof and adopts the complex curved-surface net rack, the lower part of the curved-surface net rack adopts a space steel structure of the large bifurcated column, the three-dimensional crossing of the curved-surface net rack, the bifurcated column and the temporary support is realized, and the comprehensive technology of ensuring the construction safety by combining computer simulation analysis and the field monitoring of stress and displacement in the whole construction process is combined.
In addition, a utility model patent (CN111851745A) applied by the third limited construction company of eight offices of midsummer construction discloses a construction method for installing large-span double-layer PTFE membrane roof in units, which comprises the following steps: s1, modeling the roof structure, and dividing the roof into a plurality of units; s2, packing the unit films, packing each unit film produced according to the unit shape from the center to two sides, and adding paper tubes at the bent parts; s3, carrying out on-site inspection on the unit films, checking whether the unit films are damaged or not and checking the number of the unit films; s4, installing an outer die; s5, installing a waterproof membrane; s6, mounting an inner membrane; and S7, mounting an insulating layer. The scheme utilizes the independently designed large-span hemispherical double-layer PTFE membrane structure roof sub-unit installation construction technology, ensures that the tensioning of the double-layer membrane roof membrane is in place, and has better overall construction quality.
In a large-scale cable system tensile membrane structure, because the membrane surface covers the surface of the arc-shaped framework rod piece and forms a stable organic whole with the arc-shaped framework rod piece, the unit area of the membrane body is large, and the membrane surface is difficult to unfold and stretch in place during high-altitude operation, so that high requirements are put forward on construction procedures, construction methods, technical measures, quality safety measures and the like, and an installation plan needs to be made in advance for coping.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel stadium super large span PTFE membrane structure in order to overcome the not enough of prior art existence.
The technical scheme of the utility model as follows:
firstly, the utility model adopts the stadium super-large span PTFE film structure, which comprises a steel arch frame and a film roof, wherein the film roof is made of film units; the membrane unit is connected with an aluminum alloy casting and a U-shaped piece through a membrane structure arch arranged on the membrane unit, and is connected with the steel arch.
The channel distributed along the steel structure external pressure ring beam comprises small short columns welded on the steel structure external pressure ring beam, and safety ropes are arranged between the small short columns in a pulling mode. Radial cable department walking passageway includes the steel ladder platform that sets up under radial, and this platform will be processed in the factory workshop, adopts nylon hoist and mount area to bind the steel ladder on radial cable, and the tiling spot welding corrugated sheet makes it form the walking passageway plane on the steel ladder. Four steel wire rope nets are arranged under the steel arch in the walking channel at the steel arch, the distance between the ropes is 1-2 m, and dense safety nets are arranged on the steel wire rope nets and the radial ropes and serve as a construction platform of the film at the steel arch.
The installation method of the stadium super-large span PTFE membrane structure comprises membrane unit manufacturing, membrane unit packaging, membrane unit transportation, membrane unit self-checking, safe channel establishment, membrane unit hoisting, membrane unit unfolding installation, membrane unit translation, steel arch membrane boundary installation, complete membrane unfolding and peripheral membrane boundary installation. During installation, aluminum alloy castings are inserted into the ground in advance, and only the film penetrating edge is sleeved on the U-shaped part at high altitude.
The utility model discloses a steel bow member ground imbeds fixture mode in advance, avoids aluminum alloy fixture high altitude installation, reduces construction process, and the combination formula is hoisted, and the construction progress improves by a wide margin. The automatic cutting machine and the automatic heat sealing machine are combined for use, high-precision processing and blanking are carried out, and the integral forming quality of the film unit is ensured to meet the design requirement; in the construction process, the membrane tensioning sequence is crucial for the membrane units with four sides tensioned and the middle connected with the steel arch, and various problems can be caused by improper tensioning sequence, such as the membrane boundary is not tensioned in place, the local folds of the membrane surface are loosened, and the like. The stretching method is carried out by adopting the principle of symmetrically stretching the middle part, the short edge, the long edge and the back long edge. The steel arch membrane connection is synchronously carried out in the transverse translation process, the structural deformation of the membrane is effectively reduced, and the molding quality of the membrane structure is ensured. And a totally-enclosed safe walking channel is arranged under the construction area of the membrane unit, so that the safety and reliability of installation operation are greatly improved. The film unit is integrally lifted to the annular cable net by a 70-ton crane, and the film is stretched by traction, so that the method is simple and easy to implement, and the construction period can be greatly shortened; the tensioning is realized by adopting a tool machine, a crane is not used, the number of operators is small, and the time is short; the membrane structure integrally promotes the construction, and is economical and reasonable.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model is generated by reasonably planning and summarizing on the basis of prior engineering practice experience, abandons some unreasonable and uneconomical operation steps, can greatly shorten the construction period, improve the engineering quality, and obtain immeasurable benefits in the aspects of engineering quality, construction period, cost and the like;
2. aluminum alloy castings are inserted into the ground in advance, the inserting speed is high, potential safety hazards do not exist, only the film penetrating edge is sleeved on the U-shaped part at high altitude, the construction efficiency is improved, meanwhile, the engineering quality can be improved, and the installation cost can be roughly estimated and saved by 50 ten thousand yuan;
3. a dense mesh safety net is erected for film spreading and a self-made steel ladder is used for film loading, a traditional scaffold platform is omitted, the film spreading mode is advanced and reasonable, the construction quality is guaranteed, and the management and installation cost can be saved by 300 ten thousand yuan;
4. for the same or similar types of membrane structure engineering projects, construction can be carried out by using the construction method for reference, so that the working efficiency is improved, the engineering building quality is improved, and the installation cost is greatly saved.
Drawings
FIG. 1 is a schematic diagram of channels arranged along an outer pressure ring beam of a steel structure;
FIG. 2 is a front elevation of a walking channel at a radial cable;
FIG. 3 is a side elevation of the walking tunnel at the radial cable;
FIG. 4 is a schematic view of a walking channel (initial membrane-spreading unit) at a steel arch;
FIG. 5 is a schematic diagram of the division of 36 membrane units;
FIG. 6 is a schematic diagram of the membrane unit hoisting;
FIG. 7 is a schematic view of a translational membrane unit;
FIG. 8 is a schematic view of a mounting steel arch boundary;
FIG. 9 is a schematic view of a fully expanded membrane;
FIG. 10 is a schematic view of the peripheral membrane boundary installation.
Description of reference numerals: 1-steel arch, 2-radial cable, 3-aluminum alloy casting, 4-U-shaped part, 5-dense mesh safety net, 6-steel ladder, 7-steel structure external compression ring beam, 8-small short column, 9-safety rope, 10-membrane unit, 11-wire tightener, 12-temporary windproof reverse rope net, 13-nylon hoisting belt, 14-steel wire rope net, 15-stadium central point, 16-truck crane and 17-membrane structure arch.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The utility model discloses during the concrete implementation, including following step:
1. the film unit 10 is manufactured, and when a film material is manufactured, a film surface preshrinking cutting method is adopted in a film surface cutting process so as to meet the requirement of design on the tension of the film material.
2. And establishing a walking safety channel, and adopting a walking channel which has small influence on other specialties, low cost, high efficiency and safety, such as a channel arranged along the steel structure outer pressure ring beam 7, a walking channel at the radial cable 2 and a walking channel at the steel arch frame 1, by combining field conditions.
1) And (3) laying channels along the steel structure external pressure ring beam 7:
as shown in figure 1, small short columns 8 are welded on an outer pressure ring beam 7 of a steel structure, and a safety rope 9 with the size of phi 10 is arranged between the small short columns 8 in a pulling mode to serve as a life line.
2) Radial cable 2 walking channel:
as shown in figures 2 and 3, a self-made steel ladder 6 platform is arranged under a radial cable 2, the platform is processed and checked to be qualified in a factory workshop, the length of the platform is 4-6 meters, 1-2 tons of nylon lifting belts 13 are used for binding the steel ladder 6 on the radial cable 2, the height of the platform is about 1.2 meters, the distance between radial points is about 2-3 meters, and the overlapping length of the steel ladder 6 is about 0.5 meter. The lap joint of the steel ladder 6 at the crossing part of the sling needs to be separately processed. The spot welding corrugated plate is paved on the steel ladder 6 to form a walking channel plane, and constructors should wear the double-hook safety belt to hang on the upper radial cable 2 when walking and operating along the ladder.
3) The walking channel at the steel arch frame 1:
as shown in fig. 4, four phi 6 steel wire rope nets 14 are pulled under the steel arch 1, the distance between the ropes is 1-2 meters, and dense safety nets 5 are arranged on the steel wire rope nets 14 and the radial ropes 2 to serve as construction platforms of the membrane unit 10 at the steel arch 1.
3. The membrane roof comprises 36 membrane units 10, as shown in figure 5, with a maximum membrane unit 10 area of 1256 square metres, a weight of about 1.8 tonnes and a span of about 27 metres.
4. As shown in fig. 6, the membrane unit 10 is hoisted, and according to actual conditions on site, a 70-ton truck crane 16 is selected for hoisting. The combined weight of the membrane unit 10 and the spreader is at most about 2.6 tonnes and the maximum height of the spreader is 52 metres, which is sufficient for lifting the membrane unit 10 over the installation area.
5. Translation film unit 10: as shown in fig. 4 and 7, the arrow direction in the figure is the film unit unfolding direction, after the film unit 10 is unfolded in the long direction, the temporary tooling is installed on the radial cable 2 at the other end, and after the temporary tooling is completely installed every 3 meters by using the chain-reversing drawknot, the film unit 10 is transversely pulled and moved to the installation design position.
6. As shown in fig. 8, the film boundary of the steel arch 1 is installed, and the film surface at the position where the steel arch 1 is installed is synchronously started in the film translation process. Aluminum alloy castings 3 are inserted into the ground in advance, only the film penetrating edge is sleeved on the U-shaped part 4 at high altitude, and the process that the film unit 10 is unfolded along the short direction is the process that the film cable sleeve is connected with the clamping apparatus because the U-shaped clamping apparatus 4 and the aluminum alloy castings 3 are inserted into the film penetrating edge in advance.
7. As shown in fig. 9, after the film is completely spread and the entire film surface is spread, four sides are temporarily tied using the turnbuckles 11, and the temporary windproof reversed rope net 12 is fixed to the film surface.
8. Installing the peripheral membrane boundary:
the installation requirement is as follows: preparing tools according to the respective division positions, entering an installation working face, aligning the positioning points of the membrane units 10 with the boundaries of the ropes by an installer at the respective positions, and performing initial pre-tensioning on the membrane units 10 by using a tensioning machine, as shown in fig. 10.
The installation sequence is as follows: first, the middle part, then the short side, and then the long side are symmetrically stretched. Firstly, the front end side cable and the rear compression ring beam are stretched in place, and the U-shaped clamp 4 and the bolt are installed. And simultaneously tensioning the boundaries of the radial cables 2 at the two ends in place, and sequentially installing membrane accessories and bolts from the middle part to the two sides.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a stadium super large span PTFE membrane structure which characterized in that: comprises a steel arch frame (1) and a membrane roof, wherein the membrane roof is made of membrane units (10); the steel structure external pressure ring beam-type membrane unit comprises a membrane roof walking channel, wherein the walking channel comprises a channel distributed along a steel structure external pressure ring beam (7), a radial cable (2) walking channel and a steel arch frame (1) walking channel, and the membrane unit (10) is connected with an aluminum alloy casting (3) and a U-shaped piece (4) through a membrane structure arch (17) arranged on the membrane unit, so that the connection with the steel arch frame (1) is realized.
2. The stadium extra-large span PTFE membrane structure of claim 1, wherein: the channel laid along the steel structure external pressure ring beam (7) comprises small short columns (8) welded on the steel structure external pressure ring beam (7), and safety ropes (9) are arranged between the small short columns (8) in a pulling mode.
3. The stadium extra-large span PTFE membrane structure of claim 1, wherein: radial cable (2) department walking passageway includes steel ladder (6) platform that sets up under radial cable (2), and this platform will be processed in the factory workshop and accomplish, adopts nylon hoist and mount area (13) to bind steel ladder (6) on radial cable (2), and the tiling spot welding corrugated sheet makes it form walking passageway plane on steel ladder (6).
4. The stadium extra-large span PTFE membrane structure of claim 1, wherein: the walking channel at the steel arch (1) is that four steel wire rope nets (14) are arranged under the steel arch (1) in a pulling mode, the distance between the ropes is 1-2 m, dense mesh safety nets (5) are arranged on the steel wire rope nets (14) and the radial ropes (2) and serve as a construction platform of a film at the steel arch (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022907029.1U CN214885910U (en) | 2020-12-07 | 2020-12-07 | Stadium super large span PTFE membrane structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022907029.1U CN214885910U (en) | 2020-12-07 | 2020-12-07 | Stadium super large span PTFE membrane structure |
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| Publication Number | Publication Date |
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| CN214885910U true CN214885910U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022907029.1U Expired - Fee Related CN214885910U (en) | 2020-12-07 | 2020-12-07 | Stadium super large span PTFE membrane structure |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776027A (en) * | 2022-02-11 | 2022-07-22 | 中建二局第三建筑工程有限公司 | Construction method of tropical rainforest greenhouse steel structure |
| CN115288296A (en) * | 2022-09-15 | 2022-11-04 | 北京新智唯弓式建筑有限公司 | Flexible covering system of arch structure and construction method |
-
2020
- 2020-12-07 CN CN202022907029.1U patent/CN214885910U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776027A (en) * | 2022-02-11 | 2022-07-22 | 中建二局第三建筑工程有限公司 | Construction method of tropical rainforest greenhouse steel structure |
| CN114776027B (en) * | 2022-02-11 | 2023-02-03 | 中建二局第三建筑工程有限公司 | Construction method of tropical rainforest greenhouse steel structure |
| CN115288296A (en) * | 2022-09-15 | 2022-11-04 | 北京新智唯弓式建筑有限公司 | Flexible covering system of arch structure and construction method |
| CN115288296B (en) * | 2022-09-15 | 2023-03-10 | 北京新智唯弓式建筑有限公司 | Flexible covering system of bow-type structure and construction method |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |