CN102561706B - Internal threading method for spatial large-span prestressed steel structure steel strand - Google Patents
Internal threading method for spatial large-span prestressed steel structure steel strand Download PDFInfo
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- CN102561706B CN102561706B CN201210071965.0A CN201210071965A CN102561706B CN 102561706 B CN102561706 B CN 102561706B CN 201210071965 A CN201210071965 A CN 201210071965A CN 102561706 B CN102561706 B CN 102561706B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 99
- 239000010959 steel Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011173 large scale experimental method Methods 0.000 description 2
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Abstract
A spatial large-span prestressed steel structure steel strand internal threading method comprises the following steps: 1. respectively placing a main winch and a traction winch on two sides of a main truss, wherein stress folding points of the main winch and the traction winch are connected by pulley blocks; the steel wire rope of the traction winch is threaded into the steel strand threading sleeve section by section; 2. integrally hoisting the sleeve through which the traction steel wire rope passes in place, and connecting the steel wire rope of the main winch with the traction steel wire rope after the sleeve is welded with the main truss; 3. binding the steel strands in batches, and connecting the first batch of steel strands with a steel wire rope of a main winch so as to complete the threading work of the first batch of steel strands; 4. and after the first batch of steel strands are in place, pulling the main hoisting steel wire rope to the threading side of the sleeve by using a traction hoisting machine, and repeating the steps to finish the threading work of all the steel strands. The invention leads the threading work in the space large-span prestressed steel structure steel strand body to be more convenient, efficient and rapid, shortens the construction period and greatly reduces the construction cost.
Description
Technical field:
The invention belongs to a kind of construction techniques, particularly to threading method in a kind of large-span space prestressed steel structure steel strand wires body.
Background technology:
Domestic at present belonging to external stretch-draw suspended-cable structure in spatial steel structure prestress wire use major part, in large-span space body, stretch-draw prestressing force steel strand wires beam-string structure, is also rarely employed at home.Only internal threading technology is after steel strand wires sleeve pipe integral hoisting, steel strand wires sleeve pipe is manually passed through with single finer wire, again with manually hoisting rope being pulled to steel strand wires side, complete the threading work of steel strand wires again, this method efficiency of construction is low, time-consuming, effort, cost of labor increase, and construction period is longer.
Summary of the invention:
It is an object of the invention to provide threading method in a kind of large-span space prestressed steel structure steel strand wires body, this method solve the problem that in large-span space prestressed steel structure steel strand wires body, threading is difficult, make this work convenient, efficient, quick, shorten construction period and greatly reduce construction cost.
As above conceive, the technical scheme is that threading method in a kind of large-span space prestressed steel structure steel strand wires body, it is characterised in that: comprise the steps:
(1) main winch and a rack winch being individually positioned in main couple both sides, their stress break adopts assembly pulley to connect；When at the scene steel strand wires threading casing section being assembled, the traction hoisting rope of rack winch is through in steel strand wires threading sleeve pipe piecemeal；
(2) the steel strand wires threading sleeve pipe integral hoisting putting on traction hoisting rope is put in place, after welding with main couple, main winch steel wire rope is connected with traction hoisting rope, to complete main winch steel wire rope passing through steel strand wires threading sleeve pipe；
(3) steel strand wires colligation in batches guarantee are passed through the concentricity of rear steel strand wires, then first steel strand wires are connected with main winch steel wire rope, complete the threading work of first steel strand wires；
(4) after first steel strand wires are in place, with rack winch, main winch steel wire rope is pulled to the threading side of steel strand wires threading sleeve pipe, repeats above step and complete the threading work of all steel strand wires；
(5) the anchoring work of steel strand wires is completed.
The invention solves the problem that in large-span space prestressed steel structure steel strand wires body, threading is difficult, make this work convenient, efficient, quick, shorten construction period and greatly reduce construction cost.
Accompanying drawing illustrates:
Fig. 1 is main winch and rack winch layout schematic diagram；
Fig. 2 is rack winch traction hoisting rope threading schematic diagram；
Fig. 3 is steel strand wires threading sleeve pipe schematic diagram 1.；
Fig. 4 is that steel strand wires pass through schematic diagram.
Wherein: 1-main winch；2-rack winch；3-pulley；4-operating board and pulley fixed frame；5-draws hoisting rope；6-trocar sheath；Assure in 7-；8-steel strand wires；9-steel strand wires threading sleeve pipe.
Detailed description of the invention:
Threading method in a kind of large-span space prestressed steel structure steel strand wires body, comprises the steps:
1, adopting a main winch 1 and a rack winch 2 to split main couple both sides, the stress break of steel wire rope of windlass adopts the connected mode (as shown in Figure 1) of assembly pulley 3.Owing to steel strand wires threading sleeve pipe span is big, therefore when at the scene casing section being assembled, traction hoisting rope is through at piecemeal in steel strand wires threading sleeve pipe 9 (as shown in Figure 2).
2, the steel strand wires threading sleeve pipe integral hoisting putting on haulage cable is put in place, after welding with main couple, main winch steel wire rope is connected with traction hoisting rope, to complete main winch steel wire rope passing through steel strand wires threading sleeve pipe.
3, by steel strand wires colligation in batches, in often a collection of, each steel strand wires two is carried out labelling and carries out overall constraint work, to ensure to pass through the concentricity of rear steel strand wires, then first steel strand wires are connected with main winch steel wire rope, complete the threading work (as shown in Figure 4) of first steel strand wires.
4, after first steel strand wires are in place, with rack winch, main winch steel wire rope is pulled to the threading side of steel strand wires threading sleeve pipe, repeats above step and complete the threading work of all steel strand wires.
5, the anchoring work of steel strand wires is completed.
The present invention once tested at certain large span large-scale experiment room Factory Building, this Factory Building adopts stretch-draw prestressing force steel strand wires beam-string structure in large-span space body, span 100m, agent structure form is the prestress wire of space truss+strut+outside steel pipe, steel strand wires quantity is 37, the steel strand wires sleeve pipe (as shown in Figure 3) of internal stretch-draw.The construction of certain large span large-scale experiment room Factory Building 24 Pin prestressing force main couple is completed by the application of this technology, well solve the problem that in large-span space steel construction prestress wire body, threading is difficult, and convenient and swift efficiently, simultaneously also short construction period, greatly reduces construction cost.
Claims (1)
1. threading method in a large-span space prestressed steel structure steel strand wires body, it is characterised in that: comprise the steps:
(1) main winch and a rack winch being individually positioned in main couple both sides, their stress break adopts assembly pulley to connect；When at the scene steel strand wires threading casing section being assembled, the traction hoisting rope of rack winch is through in steel strand wires threading sleeve pipe piecemeal；
(2) the steel strand wires threading sleeve pipe integral hoisting putting on traction hoisting rope is put in place, after welding with main couple, main winch steel wire rope is connected with traction hoisting rope, to complete main winch steel wire rope passing through steel strand wires threading sleeve pipe；
(3) steel strand wires colligation in batches guarantee are passed through the concentricity of rear steel strand wires, then first steel strand wires are connected with main winch steel wire rope, complete the threading work of first steel strand wires；
(4) after first steel strand wires are in place, with rack winch, main winch steel wire rope is pulled to the threading side of steel strand wires threading sleeve pipe, repeats above step and complete the threading work of all steel strand wires；
(5) the anchoring work of steel strand wires is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210071965.0A CN102561706B (en) | 2012-03-19 | 2012-03-19 | Internal threading method for spatial large-span prestressed steel structure steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210071965.0A CN102561706B (en) | 2012-03-19 | 2012-03-19 | Internal threading method for spatial large-span prestressed steel structure steel strand |
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| Publication Number | Publication Date |
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| CN102561706A CN102561706A (en) | 2012-07-11 |
| CN102561706B true CN102561706B (en) | 2016-07-06 |
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| CN201210071965.0A Active CN102561706B (en) | 2012-03-19 | 2012-03-19 | Internal threading method for spatial large-span prestressed steel structure steel strand |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995564A (en) * | 2012-12-12 | 2013-03-27 | 中铁上海工程局有限公司 | Method and device for drawing steel strand in prestressing duct |
| CN105350782B (en) * | 2015-10-22 | 2017-12-05 | 中国十七冶集团有限公司 | A kind of semi-mechanization steel strand wires laying method for round silo |
| CN106049881B (en) * | 2016-06-30 | 2018-09-25 | 中冶建工集团有限公司 | A kind of prestress anchorage cable ultra long haul is reeved method |
| CN107386655B (en) * | 2017-08-09 | 2019-06-04 | 浙江中南建设集团钢结构有限公司 | Prestressed cable laying method in steel tube body |
| CN112096088B (en) * | 2020-08-21 | 2021-11-09 | 中国建筑第八工程局有限公司 | Steel pipe prestressed steel strand high-altitude pipe penetration construction method |
| CN112282376A (en) * | 2020-10-20 | 2021-01-29 | 中国建筑第八工程局有限公司 | Ground pipe penetrating system for steel strand in large-span steel truss and pipe penetrating construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3810323C1 (en) * | 1988-03-26 | 1989-04-20 | Dyckerhoff & Widmann Ag, 8000 Muenchen, De | Process for mounting a tension member which runs in a freely stressed manner between its anchorage points, in particular a stay cable for a cable-stayed bridge |
| CN101571007A (en) * | 2009-05-26 | 2009-11-04 | 上海建科结构新技术工程有限公司 | Prestressed reinforcing steel post penetrating method for ultralong prestressed duct |
-
2012
- 2012-03-19 CN CN201210071965.0A patent/CN102561706B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3810323C1 (en) * | 1988-03-26 | 1989-04-20 | Dyckerhoff & Widmann Ag, 8000 Muenchen, De | Process for mounting a tension member which runs in a freely stressed manner between its anchorage points, in particular a stay cable for a cable-stayed bridge |
| CN101571007A (en) * | 2009-05-26 | 2009-11-04 | 上海建科结构新技术工程有限公司 | Prestressed reinforcing steel post penetrating method for ultralong prestressed duct |
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| CN102561706A (en) | 2012-07-11 |
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