CN203285070U - Asymmetrical spoke type beam string tensioning tool - Google Patents
Asymmetrical spoke type beam string tensioning tool Download PDFInfo
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- CN203285070U CN203285070U CN2013203288914U CN201320328891U CN203285070U CN 203285070 U CN203285070 U CN 203285070U CN 2013203288914 U CN2013203288914 U CN 2013203288914U CN 201320328891 U CN201320328891 U CN 201320328891U CN 203285070 U CN203285070 U CN 203285070U
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Abstract
The utility model relates to a tensioning tool for buildings, in particular to a cable dome inhaul cable tensioning device. An asymmetrical spoke type beam string tensioning tool comprises radial steel beams and annular steel beams, wherein the number of the radial steel beams is 20-40, the radial steel beams are in symmetrical radial shapes, the fixed ends of the radial steel beams are connected to one point, each free end of the radial steel beams is provided with two inhaul cable nodes which are provided with inhaul cable systems, and with the fixed end of the radial steel beams as a circle center, the annular steel beams are arranged on the radial steel beams with the same distance from the fixed end of the radial steel beams, and the number of the annular steel beams is 7. The radial steel beams of the tensioning tool are in the symmetrical radial shapes, the number of tensioning points is few, and tensioning stress is symmetrical; the inhaul cable systems and cable heads are connected through change-over nuts in a tensioning barrel, assembly and disassembly are convenient, and circulating is convenient; a jack is provided with a tension display screen to achieve the purpose of controllable tension. By means of the asymmetrical spoke type beam string tensioning tool, project period is shortened, tensioning quality is ensured, and stress requirements are met.
Description
Technical field
The utility model relates to tension tool for building, especially for rope dome cable pull device.
Background technology
The prestressed large-span spatial steel structure is modern prestressing technique to be applied to class longspan structures such as tension structure that rack, net shell Iso-lattice truss, rope, bar form, space truss structure, thereby forms the novel prestressed large-span spatial steel structure system of a class.This class formation reasonable stress, rigidity is large, lightweight, fabrication and installation are also more convenient, and the structure visual field is penetrating, and daylighting is effective.Be widely used and develop in nearly more than ten years.
A common string beam dome structure mostly is regular shape, and rope is parallel or is arranged symmetrically with, the stretch-draw point be uniformly distributed and tension stress roughly the same, stretching process need not classification.Along with constantly bringing forth new ideas of era development and engineering, people start traditional rule symmetric configuration structure generation aestheticly tired, and the unsymmetric structure form is looked at the parent that its novel outward appearance is subject to more and more people.This engineering comprehensive shop dome is circular, and 32 stretching ropes are connected by center rigid pressure ring, form whole stress system.The characteristics of this engineering are that pressure rings is positioned at inclined to one side home position, and it is radial that the distribution of rope system is asymmetric spoke, and rope is long all different, and tension stress is also different.
Existing tensioning equipment is usually set and is fixedly connected with stretch-draw by drag-line, and dismounting is inconvenient, application underaction, and the stretch-draw pulling force controls inaccuracy, and stretch-draw point quantity is many, the classification of stretch-draw branch, tension stress is asymmetric, the problem such as moulding bed difficulty dismounting after stretch-draw.
Summary of the invention
For addressing the above problem, the utility model provides a kind of asymmetric radial to open string girder tensioning frock, stretch-draw point quantity is few, tension stress is symmetrical, and after stretch-draw, moulding bed is easily removed, tension tool and drag-line convenient disassembly, reached turnover convenient, the purposes such as stretch-draw is controlled, shortened the duration of a project, guaranteed stretch-draw quality and stress requirement.
For achieving the above object, the utility model provides a kind of asymmetric radial to open string girder tensioning frock, it comprises radially girder steel and hoop girder steel, and radially girder steel has 20-40 to follow, and radially girder steel is symmetrical radial, fixed end connects a bit, each free end is provided with two drag-line nodes, and drag-line node installation cable systems, take girder steel fixed end radially as the center of circle, radially erection loop is to girder steel on the equidistant radially girder steel of girder steel fixed end for distance, and described hoop girder steel has the 5-10 road.
Described cable systems comprises stretch-draw cylinder, jack, tensioning screw rod, drag-line node end is provided with the rope head, in the stretch-draw cylinder, rope head and steelframe are fixed by the rope head nut, the rope head is connected the switching nut and connects with tensioning screw rod, stretch-draw cylinder end is fixedly connected with jack, jack overcoat tensioning screw rod, tensioning screw rod is fixed in jack by nut.
Described jack is with the pulling force display screen.
Use the utility model successful: radially girder steel is symmetrical radial, and stretch-draw point quantity is few, and tension stress is symmetrical; Cable systems connects by the switching nut in the stretch-draw cylinder with the rope head, convenient disassembly, and turnover is convenient; Jack, with the pulling force display screen, realizes that stretch-draw is controlled.The utility model has shortened the duration of a project, has guaranteed stretch-draw quality and stress requirement.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model first order drag-line first step pulling force schematic diagram.
Fig. 3 is the utility model first order drag-line second step pulling force schematic diagram.
Fig. 4 is the 3rd step of the utility model first order drag-line pulling force schematic diagram.
Fig. 5 is the 4th step of the utility model first order drag-line pulling force schematic diagram.
Fig. 6 is the utility model cable systems sectional view.
The radially peripheral steel structure system of girder steel, 2-hoop girder steel, 3-, 4-support tower, 5-stretch-draw cylinder, 6-jack, 7-tensioning screw rod, 8-rope head, 9-steelframe, 10-rope head nut, 11-switching nut, 12-nut of 1-in figure.
The specific embodiment
The utility model is take the specific embodiment as example, but is not limited to this specific embodiment, and the expansion take the utility model as basis all belongs to the utility model protection domain.
Wherein asymmetric radial is opened string girder tensioning frock and is comprised radially girder steel 1 and hoop girder steel 2, radially girder steel 1 has 20-40 to follow, radially girder steel 1 is symmetrical radial, fixed end connects a bit, each free end is provided with two drag-line nodes, and drag-line node installation cable systems, take girder steel 1 fixed end radially as the center of circle, radially erection loop is to girder steel 2 on the equidistant radially girder steel 1 of girder steel 1 fixed end for distance, and described hoop girder steel 2 has the 5-10 root.
Use asymmetric radial to open string girder tensioning frock, at first will complete preparation.The first step, install peripheral steel structure system 3; Second step, set up temporary supporting pylon 4, and support tower 4 is positioned at needs the dome of installing inner, and two circles are installed altogether; The 3rd step, asymmetric radial is installed is opened string girder tensioning frock, comprise radially girder steel 1 and hoop girder steel 2 two parts; In the 4th step, cable systems is installed and drag-line is carried out pretension; In the 5th step, the hoop drag-line is carried out pretension; In the 6th step, by 64 of classification symmetry principle stretch-draw outer rings radial cable, stretch-draw divides three grades, and first order stretch-draw is to 60% of proof stress, and second level stretch-draw is to 90% of proof stress, and third level stretch-draw is to 100% of proof stress.After first and second grade stretch-draw was completed, most of layer Steel Structure broke away from bottom temporary supporting pylon 4,, with all strong point unloadings that does not break away from support tower 4, then carried out third level stretch-draw.
Every one-level stretch-draw divided for 4 steps, and as Figure 2-Figure 5, in figure, radially girder steel 1 and 64 stretch-draw nodes are as example take 32 for the first order and third level order, and second level tension sequence is opposite with the first order.Each node divides three grades of stretch-draw.So require the necessary easy accessibility of frock, while weight is difficult for excessive, for turnover brings difficulty.In this stretching construction, simplified the frock composition, by jack 6, stretch-draw cylinder 5 and rear end moveable anchor, formed tensioning system, with common tensioning tooling, compared, volume is little, and weight alleviates greatly, handled easily.
After adopting the utility model, better grasp the process control of three grades of stretch-draw, reduced tension error, before stretch-draw, support jig is carried out accurate Calculation, after stretch-draw, the whole dome structure approximately 2cm that rises, really realized self-unloading, not only guaranteed engineering safety but also facilitated construction.
As shown in Figure 6, the utility model cable systems used comprises stretch-draw cylinder 5, jack 6, tensioning screw rod 7, drag-line node end is provided with rope head 8, the interior rope head 8 of stretch-draw cylinder 5 and steelframe 9 are fixing by rope head nut 10, rope head 8 is connected with tensioning screw rod by 11 connections of switching nut, stretch-draw cylinder 5 ends are fixedly connected with jack 6, jack 6 overcoat tensioning screw rods 7, and tensioning screw rod 7 is fixed in jack 6 by nut 12.Jack 6 is with the pulling force display screen.
In use procedure, stretch-draw cylinder 5 ends fasten rope head 8, and rope head 8 is connected with tensioning screw rod by 11 connections of switching nut, unlatching jack 6, and jack 6 tension drag-lines, the drag-line of pulling out is fixed by nut 12 and 10 rotations of rope head nut, prevents the drag-line retraction.Wherein drag-line power and drag-line speed show by the stress value on the pulling force display screen.
As Fig. 2-shown in Figure 6, in the present embodiment, each stretching rope length is different, and the process control of tension stress is complicated.The stress value that shows screen display by the pulling force that is connected with jack 6, control tensioning speed, and pass through fixedly stretch-draw position of rope head nut 10.This frock is compared with conventional frock, has discharged narrow and small operating space, high-altitude, has indirectly improved adjusting rope head nut 10 required times, has increased the construction flexibility, has reduced the working time that non-stretch-draw operation takies.
Claims (4)
1. an asymmetric radial is opened string girder tensioning frock, it is characterized in that: asymmetric radial is opened string girder tensioning frock and is comprised radially girder steel and hoop girder steel, radially girder steel has 20-40 to follow, radially girder steel is symmetrical radial, and fixed end connects a bit, and each free end is provided with two drag-line nodes, drag-line node installation cable systems, take girder steel fixed end radially as the center of circle, radially erection loop is to girder steel on the equidistant radially girder steel of girder steel fixed end for distance, and described hoop girder steel has the 5-10 road.
2. a kind of asymmetric radial according to claim 1 is opened string girder tensioning frock, it is characterized in that: described asymmetric radial is opened peripheral peripheral steel structure system, the below installation support tower of installing of string girder tensioning frock.
3. a kind of asymmetric radial according to claim 1 is opened string girder tensioning frock, it is characterized in that: described cable systems comprises stretch-draw cylinder, jack, tensioning screw rod, drag-line node end is provided with the rope head, in the stretch-draw cylinder, rope head and steelframe are fixed by the rope head nut, the rope head is connected the switching nut and connects with tensioning screw rod, stretch-draw cylinder end is fixedly connected with jack, jack overcoat tensioning screw rod, and tensioning screw rod is fixed in jack by nut.
4. a kind of asymmetric radial according to claim 3 is opened string girder tensioning frock, and it is characterized in that: described jack is with the pulling force display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203288914U CN203285070U (en) | 2013-06-08 | 2013-06-08 | Asymmetrical spoke type beam string tensioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203288914U CN203285070U (en) | 2013-06-08 | 2013-06-08 | Asymmetrical spoke type beam string tensioning tool |
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| CN203285070U true CN203285070U (en) | 2013-11-13 |
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| CN2013203288914U Expired - Fee Related CN203285070U (en) | 2013-06-08 | 2013-06-08 | Asymmetrical spoke type beam string tensioning tool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110086A (en) * | 2014-05-23 | 2014-10-22 | 浙江东南网架股份有限公司 | Suspended dome and plane prestress combined structure, tensioning tool and construction method |
| CN104234433A (en) * | 2014-08-22 | 2014-12-24 | 北京市建筑工程研究院有限责任公司 | Tensioning and forming method and tensioning device of spoke type annular cantilever cable support grid structure |
| CN111305465A (en) * | 2019-11-12 | 2020-06-19 | 成都容正软件有限公司 | Hoisting construction method for spoke type beam string structure |
| CN111424989A (en) * | 2020-03-13 | 2020-07-17 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
| CN114704100A (en) * | 2022-03-24 | 2022-07-05 | 中建八局第一建设有限公司 | High-strength pull rod tensioning tool and using method |
-
2013
- 2013-06-08 CN CN2013203288914U patent/CN203285070U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110086A (en) * | 2014-05-23 | 2014-10-22 | 浙江东南网架股份有限公司 | Suspended dome and plane prestress combined structure, tensioning tool and construction method |
| CN104234433A (en) * | 2014-08-22 | 2014-12-24 | 北京市建筑工程研究院有限责任公司 | Tensioning and forming method and tensioning device of spoke type annular cantilever cable support grid structure |
| CN111305465A (en) * | 2019-11-12 | 2020-06-19 | 成都容正软件有限公司 | Hoisting construction method for spoke type beam string structure |
| CN111424989A (en) * | 2020-03-13 | 2020-07-17 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
| CN111424989B (en) * | 2020-03-13 | 2021-09-14 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
| CN114704100A (en) * | 2022-03-24 | 2022-07-05 | 中建八局第一建设有限公司 | High-strength pull rod tensioning tool and using method |
| CN114704100B (en) * | 2022-03-24 | 2023-06-20 | 中建八局第一建设有限公司 | High Jiang Lagan tensioning tool and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20190608 |
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| CF01 | Termination of patent right due to non-payment of annual fee |