CN105507149A - Arrangement method for cable-hanging of single parallel steel strand wires - Google Patents
Arrangement method for cable-hanging of single parallel steel strand wires Download PDFInfo
- Publication number
- CN105507149A CN105507149A CN201510830571.2A CN201510830571A CN105507149A CN 105507149 A CN105507149 A CN 105507149A CN 201510830571 A CN201510830571 A CN 201510830571A CN 105507149 A CN105507149 A CN 105507149A
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- China
- Prior art keywords
- steel strand
- draw
- cable
- pulling
- anchoring
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention provides an arrangement method for cable-hanging of single parallel steel strand wires. By adopting an enclosed signal steel strand cable-hanging circulating device and utilizing a network intelligent tension system, cable-penetrating speed and tension quality are greatly enhanced. The method comprises following steps: pulling the steel strand wire to the cable-hanging circulating device to a platform outside a tower and linking the steel strand wire with a cable-pulling device at an anchoring end and pulling the steel strand wire into an anchorage device at a tower end, installing clamp pieces and tensioning and pre-tightening; linking the other end of the steel strand wire with the cable-pulling device at the anchoring end of a beam end, pulling the steel strand wire to a beam-end anchorage device; installing clamp pieces and tensioning and pre-tightening; sequentially hanging cables of the whole steel strand wire; pulling the steel strand wire out to certain length outside the anchorage device at the tensioning and anchoring end of by a pulling rope and anchoring; continuing to pulling and fixing the pulling rope at the anchoring end till length of the steel strand wire penetrating out of the outside part of the tensioning and anchoring end of the anchorage device reaches the working length; anchoring the other end of the steel strand wire, dismantling the pulling rope and pulling the other steel strand wire; and pre-tightening and tensioning two steel strand wires.
Description
Technical field
The present invention relates to technical field of building construction, be specifically related to a kind of method for arranging of single parallel steel stranded wire hanging cable.
Background technology
Parallel steel stranded wire drag-line generally takes single hanging cable, the form of construction work of single tendon stretch, and after this terminates, the later stage need carry out single tune rope to lock body, and traditional tune Suo Fangfa manually adjusts rope for using sensor and jack, and error range is large, inefficiency.
Summary of the invention
For traditional hanging cable construction method progress slowly, the problem of stretch-draw precision controlling difference, the invention provides a kind of method for arranging of novel parallel steel stranded wire hanging cable, by adopting closed single steel strand hanging cable circulating device, utilize network-enabled intelligent tensioning system, greatly increase the speed of reeving, stretch-draw quality.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A method for arranging for single parallel steel stranded wire hanging cable, comprises hanging cable circulating device, and this hanging cable circulating device comprises draw drum, hoist engine, draw-gear, guy rope device, comprises the steps:
1) draw drum is put in beam anchorage end;
2) be connected with one end traction grooved of draw-gear the steel strand one end on draw drum, the other end traction grooved of draw-gear is connected by wire rope with described hoist engine, forms closed system of reeving;
3) steel strand are drawn to tower outer platform by hanging cable circulating device and connect with the guy rope device of anchored end, are drawn to by steel strand in tower end ground tackle, install intermediate plate, stretch-draw pretension;
4) other end of steel strand connects with the guy rope device of beam anchorage end, is drawn to by steel strand in beam-ends ground tackle, installs intermediate plate, stretch-draw pretension;
5) above-mentioned steps 2 is repeated) ~ 4) hanging cable is carried out to whole bundle steel strand;
6) hanging cable circulating device continues the drag cable of traction mooring anchor fixed end, until the length that steel strand pass ground tackle Outboard Sections in stretch-draw anchor end reaches active length;
7) anchoring is carried out to the steel strand other end, pull down drag cable, use hanging cable circulating device to draw another root steel strand;
8) pretension stretch-draw is carried out to two steel strand.
Further, described steel strand are arranged with guide cylinder, form every root steel strand independently pilot hole one to one.
Further, described clip surface carries out oozing heat treatment, and it oozes hot thickness is 0.45 ~ 0.65mm.
Preferably, the anchoring of described steel strand adopts pushing tow anchoring.
Preferably, described steel strand adopt epoxy coating strand or stranded galvanized steel.
From above technical scheme, the present invention has following beneficial effect:
One, utilize hanging cable circulating device control load to carry out stretch-draw, this system realizes prestressed stretch-draw full process automatization by computer software control, stops interference from human factor, can effectively guarantee tensioning construction quality;
Two, in conjunction with the improvement of anchor structure and stretching construction equipment, adopt closed single steel strand hanging cable circulating device, greatly increase reeve, the efficiency of construction of stretch-draw, the construction technology of improvement, compared with existing construction technology, decreases a large amount of labour intensity and construction cost.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of preferred embodiment of the present invention is described in detail.
Described hanging cable circulating device comprises draw drum, hoist engine, draw-gear, guy rope device, wherein hoist engine is arranged on beam, guy rope device is arranged on tower end, guy rope device is connected by wire rope with between hoist engine, this wire rope is turned to by two groups of directive wheels, and during use, the steel strand one end on draw drum is connected with one end traction grooved of draw-gear, the other end traction grooved of draw-gear is connected by wire rope with described hoist engine, forms closed system of reeving.Described guy rope device is used for stretch-draw pretension steel strand.
The anchoring system of described parallel steel stranded wire suspension cable adopts sealing drum to carry out the combination of alternative support tube and extending, reduce material cost and labour intensity is installed, and guide cylinder is arranged with on steel strand, form every root steel strand independently pilot hole one to one, realize steel strand single tendon stretch, single tune rope, singlely change rope, avoid the phenomenon connecting and occur in steel strand process interlocking in ground tackle, accelerate installation progress.
Described steel strand adopt epoxy coating strand or stranded galvanized steel, can be used as a kind of novel cable body materials application with excellent antiseptic property in bridges in highway engineering fields such as cable stayed bridge, low-pylon cable-stayed bridge, external prestressing, arch bridge tie-rods.And because the epoxy coating of this kind of steel strand surface attachment has certain thickness, the more general steel strand of diameter are slightly large, in order to enable intermediate plate fully be engaged anchoring with these steel strand, need tooth form and the tooth distance of new design intermediate plate.In the present invention, the surface of intermediate plate has carried out oozing heat treatment, it oozes hot thickness is 0.45 ~ 0.65mm, the inner teeth occlusion presstressed reinforcing steel of intermediate plate uniform force radially, avoid snap-in force concentrations, prevent the fracture of presstressed reinforcing steel, when being engaged presstressed reinforcing steel, sawtooth tooth can not be lost efficacy and damage, during intermediate plate follow-up distortion, entirety has certain toughness, makes clamping snap-in force be dispersed in prestressed periphery.
Due in steel strand stay cable installation process, the maximum stretching force of general single cable body is 45% to 60% of the disrumpent feelings force value of the steel strand limit, so easily there is low-stress state, retraction only by steel strand can not make intermediate plate be engaged steel strand and anchoring completely from anchor, therefore, pushing tow anchoring need be changed to the intermediate plate of parallel steel stranded wire into from anchor, make intermediate plate fully be engaged steel strand, form effective anchorage effect, decrease prestressed loss.
Shown in composition graphs 1, the method for arranging of parallel steel stranded wire hanging cable of the present invention, specifically comprises the steps:
1) draw drum is put in beam anchorage end;
2) be connected with one end traction grooved of draw-gear the steel strand one end on draw drum, the other end traction grooved of draw-gear is connected by wire rope with described hoist engine, forms closed system of reeving;
3) steel strand are drawn to tower outer platform by hanging cable circulating device and connect with the guy rope device of anchored end, are drawn to by steel strand in tower end ground tackle, install intermediate plate, stretch-draw pretension;
4) other end of steel strand connects with the guy rope device of beam anchorage end, is drawn to by steel strand in beam-ends ground tackle, installs intermediate plate, stretch-draw pretension;
5) above-mentioned steps 2 is repeated) ~ 4) hanging cable is carried out to whole bundle steel strand;
6) hanging cable circulating device continues the drag cable of traction mooring anchor fixed end, until the length that steel strand pass ground tackle Outboard Sections in stretch-draw anchor end reaches active length;
7) anchoring is carried out to the steel strand other end, pull down drag cable, use hanging cable circulating device to draw another root steel strand;
8) pretension stretch-draw is carried out to two steel strand.
By traditional the utilize method of jack and sensor adjustment Suo Li and advanced PLC control technology are combined, two jack can be controlled simultaneously and carry out synchronous tension, error range can be reduced, by the indicating value of pulling force in real-time collecting device, the load of applying can be checked and approved in time, and the elongation of jack, thus specification stretching process, reduce loss of prestress, improve pre-stress construction quality.
The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (5)
1. a method for arranging for single parallel steel stranded wire hanging cable, comprises hanging cable circulating device, and this hanging cable circulating device comprises draw drum, hoist engine, draw-gear, guy rope device, it is characterized in that, comprises the steps:
1) draw drum is put in beam anchorage end;
2) be connected with one end traction grooved of draw-gear the steel strand one end on draw drum, the other end traction grooved of draw-gear is connected by wire rope with described hoist engine, forms closed system of reeving;
3) steel strand are drawn to tower outer platform by hanging cable circulating device and connect with the guy rope device of anchored end, are drawn to by steel strand in tower end ground tackle, install intermediate plate, stretch-draw pretension;
4) other end of steel strand connects with the guy rope device of beam anchorage end, is drawn to by steel strand in beam-ends ground tackle, installs intermediate plate, stretch-draw pretension;
5) above-mentioned steps 2 is repeated) ~ 4) hanging cable is carried out to whole bundle steel strand;
6) hanging cable circulating device continues the drag cable of traction mooring anchor fixed end, until the length that steel strand pass ground tackle Outboard Sections in stretch-draw anchor end reaches active length;
7) anchoring is carried out to the steel strand other end, pull down drag cable, use hanging cable circulating device to draw another root steel strand;
8) pretension stretch-draw is carried out to two steel strand.
2. method for arranging according to claim 1, is characterized in that, described steel strand are arranged with guide cylinder, forms every root steel strand independently pilot hole one to one.
3. method for arranging according to claim 1, is characterized in that, described clip surface carries out oozing heat treatment, and it oozes hot thickness is 0.45 ~ 0.65mm.
4. method for arranging according to claim 1, is characterized in that, the anchoring of described steel strand adopts pushing tow anchoring.
5. method for arranging according to claim 1, is characterized in that, described steel strand adopt epoxy coating strand or stranded galvanized steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830571.2A CN105507149A (en) | 2015-11-25 | 2015-11-25 | Arrangement method for cable-hanging of single parallel steel strand wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830571.2A CN105507149A (en) | 2015-11-25 | 2015-11-25 | Arrangement method for cable-hanging of single parallel steel strand wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105507149A true CN105507149A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830571.2A Pending CN105507149A (en) | 2015-11-25 | 2015-11-25 | Arrangement method for cable-hanging of single parallel steel strand wires |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348034A (en) * | 2016-08-30 | 2017-01-25 | 中国能源建设集团安徽电力建设第工程有限公司 | Suspension cable steel structure large power plant coal transporting trestle stay cable construction method |
| CN108385525A (en) * | 2018-01-29 | 2018-08-10 | 中交二航局第四工程有限公司 | The method that revolution steel strand wires are unidirectionally drawn in the same direction |
| CN108385524A (en) * | 2018-01-29 | 2018-08-10 | 中交第二航务工程局有限公司 | The method of revolution steel strand wires bivector traction in the same direction |
| CN111155822A (en) * | 2018-11-20 | 2020-05-15 | 中国船舶重工集团海装风电股份有限公司 | Steel strand installation method for wind driven generator support tower frame prestressed structure |
| CN114775430A (en) * | 2022-04-13 | 2022-07-22 | 江阴法尔胜住电新材料有限公司 | Steel strand tie rod cable system with layered wire-dividing supporting structure and installation method |
Citations (3)
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| JPH0790812A (en) * | 1991-03-12 | 1995-04-04 | Freyssinet Internatl (Stup) | Technique and apparatus for making various wire constituting diagonal wire in same length |
| CN1458347A (en) * | 2002-05-15 | 2003-11-26 | 柳州市建筑机械总厂 | Single stay tensing construction method and apparatus for parallel twisted steel stay system |
| CN102852092A (en) * | 2012-10-10 | 2013-01-02 | 中铁上海工程局有限公司 | Hanging cable guiding device and method |
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2015
- 2015-11-25 CN CN201510830571.2A patent/CN105507149A/en active Pending
Patent Citations (3)
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| JPH0790812A (en) * | 1991-03-12 | 1995-04-04 | Freyssinet Internatl (Stup) | Technique and apparatus for making various wire constituting diagonal wire in same length |
| CN1458347A (en) * | 2002-05-15 | 2003-11-26 | 柳州市建筑机械总厂 | Single stay tensing construction method and apparatus for parallel twisted steel stay system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348034A (en) * | 2016-08-30 | 2017-01-25 | 中国能源建设集团安徽电力建设第工程有限公司 | Suspension cable steel structure large power plant coal transporting trestle stay cable construction method |
| CN106348034B (en) * | 2016-08-30 | 2018-08-17 | 中国能源建设集团安徽电力建设第一工程有限公司 | Suspension cable steel construction large-scale power station coal transporting trestle stayed Cable Construction method |
| CN108385525A (en) * | 2018-01-29 | 2018-08-10 | 中交二航局第四工程有限公司 | The method that revolution steel strand wires are unidirectionally drawn in the same direction |
| CN108385524A (en) * | 2018-01-29 | 2018-08-10 | 中交第二航务工程局有限公司 | The method of revolution steel strand wires bivector traction in the same direction |
| CN108385524B (en) * | 2018-01-29 | 2020-07-14 | 中交第二航务工程局有限公司 | Bidirectional traction method for equidirectional rotary steel strands |
| CN111155822A (en) * | 2018-11-20 | 2020-05-15 | 中国船舶重工集团海装风电股份有限公司 | Steel strand installation method for wind driven generator support tower frame prestressed structure |
| CN114775430A (en) * | 2022-04-13 | 2022-07-22 | 江阴法尔胜住电新材料有限公司 | Steel strand tie rod cable system with layered wire-dividing supporting structure and installation method |
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Application publication date: 20160420 |