CN107059620A - Prestressing force monaural drag-line and its method for stretching - Google Patents
Prestressing force monaural drag-line and its method for stretching Download PDFInfo
- Publication number
- CN107059620A CN107059620A CN201710238099.2A CN201710238099A CN107059620A CN 107059620 A CN107059620 A CN 107059620A CN 201710238099 A CN201710238099 A CN 201710238099A CN 107059620 A CN107059620 A CN 107059620A
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- China
- Prior art keywords
- steel wire
- wire rope
- cable core
- drag
- rope cable
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/32—Metal prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of prestressing force monaural drag-line, including：Cable body；Steel wire rope cable core；Liner tube layer, it is arranged on the outer layer of the steel wire rope cable core；Air drying equipment, it is connected with the air inlet；Steel wire casing layer；Anchorage, it is arranged on the two ends of the cable body；Multiple humidity sensors, it is disposed on the inwall of the liner tube layer；Controller, it is connected with air drying equipment and humidity sensor.The method for stretching of prestressing force monaural drag-line, step includes：1) steel wire rope cable core one end is fixed, the other end, which is clamped near a movable end, the steel wire cable, sets displacement transducer；2) tensioning is carried out to the steel wire rope cable core, until the length after the steel wire rope cable core tensioning that displacement transducer is sensed is identical with preset value.The present invention has saved material on the whole, reduces cost, reduces the weight of cable body, not only acts as the effect of reduction cable body windage, is improved overall security and avoids drag-line from occurring rain wind induced vibration phenomenon.
Description
Technical field
The invention belongs to prestressing technique field, particularly a kind of prestressing force monaural drag-line and its method for stretching.
Background technology
With the progress of science and technology, prestressing technique is also evolving and ripe, and its application field is increasingly extensive.It is existing
There is the prestressing technique in technology also gradually to expose many defects, such as build heaviness, installation is inconvenient, antiseptic property is poor, inspection
Difficulty etc. is surveyed, this unfavorable factor hampers the further genralrlization of prestressing technique, and then directly affects building for application field
Build quality and service life.
The anti-corrosion of traditional steel strand wires is using itself oiling and wraps up PE layers or steel strand wires external galvanized layer and realize, the former
Due to PE layers will be wrapped outside every steel strand wires, the cross-sectional area of whole cable body is caused to become big, resistance and vibration are also therewith
Become big, very big is influenceed on bridge result, be also easy to cause accident while bridge life is reduced, the latter is coated with outside steel strand wires
Zinc layers, this undoubtedly adds cost, and time length, protected from environmental, can also be got rusty after zinc layers corruption, not from essence
The problem of upper solution anti-corrosion.
The content of the invention
The problem of for being previously mentioned, the invention provides a kind of prestressing force monaural drag-line, including：
Cable body；
Steel wire rope cable core, it is arranged on the central part of the cable body；
Liner tube layer, it is arranged on the outer layer of the steel wire rope cable core, its with the steel wire rope cable core interval 0.2~
0.5cm gap, the liner tube layer constitutes confined space with the steel wire rope cable core, and the confined space is provided with air inlet
And gas outlet, the gas outlet communicates with air, set on the outer wall of the liner tube layer and along the longitudinal direction of the liner tube layer
Put a plurality of spiral lamination；
Air drying equipment, it is connected with the air inlet；
Steel wire casing layer, it is arranged on the outer layer of the liner tube layer, the steel wire casing layer and the internal lining pipe interlayer
Every the groove that multiple perforates are set on 0.8~1.2cm, the steel wire casing layer outer wall；
Anchorage, it is arranged on the two ends of the cable body, and described anchorage one end is connected with bridge tower, and the other end is connected with bridge floor；
Multiple humidity sensors, it is disposed on the inwall of the liner tube layer, for sensing the liner tube layer
Air humidity value between the steel wire rope cable core in gap；
Controller, it is connected with the air drying equipment and humidity sensor.
Preferred scheme is：The thickness of the groove is 0.2~0.4cm.
Preferred scheme is：The air drying equipment is placed in the box beam of bridge tower or bridge floor, on the air drying equipment
Provided with air inlet pipe and escape pipe, the air inlet pipe and atmosphere, the escape pipe are connected with the air inlet.
Preferred scheme is：Rain-proof dust-proof device is provided with the air inlet pipe mouth of pipe.
Preferred scheme is：The liner tube layer is 1.5~2.5mm.
A kind of method for stretching of prestressing force monaural drag-line, step includes：
1) steel wire rope cable core one end is fixed, the other end, which is clamped near a movable end, the steel wire cable, sets displacement
Sensor, institute's displacement sensors are used to sense the length value after the steel wire cable tensioning；
2) tensioning is carried out to the steel wire rope cable core, tension force is loaded into the 20% of the minimum Fracture Force of steel wire rope cable core, kept
20~30min；
3) tension force is loaded into the 65% of the minimum Fracture Force of steel wire rope cable core, keeps 30~40min；
4) tension force is loaded into the 15% of the minimum Fracture Force of steel wire rope cable core, keeps 5~9min, repeats the above steps, until
Length after the steel wire rope cable core tensioning of institute's displacement sensors sensing is identical with preset value.
The present invention sets confined space in internal lining pipe layer and the steel wire rope cable core, and the confined space is provided with air inlet
And gas outlet, the gas outlet communicated with air, and the air inlet is connected with air drying equipment, thus reaches protective effect,
Material has been saved on the whole, cost is reduced, the weight of cable body is reduced, so as to play a part of reducing cable body windage, has been made
Overall security is improved, in addition, the present invention sets a plurality of spiral lamination on internal lining pipe layer, on steel wire casing layer outer wall
The groove of multiple perforates is set, prevent rain line drag-line upper surface row into, hinder rain line drag-line surface vibration so that
Under rainy weather, the circular profile of drag-line is not changed by rain line, it is to avoid rain wind induced vibration phenomenon occurs for drag-line.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or many
The presence or addition of individual other elements or its combination.
The invention provides the invention provides a kind of prestressing force monaural drag-line, including：Cable body；Steel wire rope cable core 1, it sets
Put the central part in the cable body；Liner tube layer 2, it is arranged on the outer layer of the steel wire rope cable core 1, itself and the steel wire cable
Core 1 is spaced 0.2~0.5cm gap, and the liner tube layer 2 constitutes confined space, the confined air with the steel wire rope cable core 1
Between be provided with air inlet and gas outlet, the gas outlet is communicated with air, on the outer wall of the liner tube layer 2 and along described interior
Rain-proof dust-proof device is provided with the longitudinally disposed a plurality of spiral lamination of bushing pipe layer 2, the air inlet pipe mouth of pipe, the liner tube layer is
1.5~2.5mm；Air drying equipment, it is connected with the air inlet；Dry air degree cable body is selected to carry out anti-corrosion, this causes
For long-term cable body maintenance, maintenance need not be greatly reduced as filling grease etc. in the past, so in cable body
Time and cost.The air drying equipment is placed in the box beam of bridge tower or bridge floor, and the air drying equipment is provided with air inlet
Pipe and escape pipe, the air inlet pipe and atmosphere, the escape pipe are connected with the air inlet, the air drying equipment
Dehumidifier is provided between air inlet pipe and escape pipe, blower fan is provided between dehumidifier and escape pipe, air is by air inlet pipe through dehumidifier
Filtering, is delivered to escape pipe, escape pipe is connected provided with some branch pipes with air admission hole by blower fan.Because air is to have one all the time
Determine humidity, so air drying equipment is provided with dehumidifier between air inlet pipe and escape pipe, this is in order that into equipment
Air remains the dry air for meeting cable body requirement by the filtering of dehumidifier, i.e., the air passed through into cable body is all
Dry air, could so keep anti-corrosion.Steel wire casing layer 3, it is arranged on the outer layer of the liner tube layer 2, the steel wire
Casing layer 3 is spaced the groove that multiple perforates 5 are set on 0.8~1.2cm, 3 outer wall of the steel wire casing layer with the liner tube layer 2
4, the thickness of the groove is 0.2~0.4cm；The groove 4 of multiple perforates 5 is set so that being difficult shape on steel wire casing 3 outer wall of layer
Into rain line, and part is dropped in liner tube layer 2 by the groove 4 of perforate 5, and rainwater is through the spiral lamination in the liner tube layer 2
Outflow, so that the formation of rain line is blocked, so as to avoid occurring Rain-wind Induced Vibration of Stay Cables.Anchorage, it is arranged on the two ends of the cable body,
Described anchorage one end is connected with bridge tower, and the other end is connected with bridge floor；Multiple humidity sensors, it is disposed on the internal lining pipe
On the inwall of layer 2, for sensing the air humidity value between the liner tube layer 2 and the steel wire rope cable core 1 in gap；Control
Device, it is connected with the air drying equipment and humidity sensor, and the controller is according to the received humidity sensor
The humidity value that device is sent, unlatching/closing air drying equipment.
A kind of method for stretching of prestressing force monaural drag-line, step includes：
1) steel wire rope cable core one end is fixed, the other end, which is clamped near a movable end, the steel wire cable, sets displacement
Sensor, institute's displacement sensors are used to sense the length value after the steel wire cable tensioning；
2) tensioning is carried out to the steel wire rope cable core, tension force is loaded into the 20% of the minimum Fracture Force of steel wire rope cable core, kept
20~30min；
3) tension force is loaded into the 65% of the minimum Fracture Force of steel wire rope cable core, keeps 30~40min；
4) tension force is loaded into the 15% of the minimum Fracture Force of steel wire rope cable core, keeps 5~9min, repeats the above steps, until
Length after the steel wire rope cable core tensioning of institute's displacement sensors sensing is identical with preset value.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (6)
1. a kind of prestressing force monaural drag-line, it is characterised in that including：
Cable body；
Steel wire rope cable core, it is arranged on the central part of the cable body；
Liner tube layer, it is arranged on the outer layer of the steel wire rope cable core, and it is with 0.2~0.5cm's of the steel wire rope cable core interval
Gap, the liner tube layer constitutes confined space with the steel wire rope cable core, and the confined space is provided with air inlet and outlet
Mouthful, the gas outlet communicates with air, on the outer wall of the liner tube layer and along the longitudinally disposed a plurality of of the liner tube layer
Spiral lamination；
Air drying equipment, it is connected with the air inlet；
Steel wire casing layer, it is arranged on the outer layer of the liner tube layer, and the steel wire casing layer is with the internal lining pipe interlayer every 0.8
The groove of multiple perforates is set on~1.2cm, the steel wire casing layer outer wall；
Anchorage, it is arranged on the two ends of the cable body, and described anchorage one end is connected with bridge tower, and the other end is connected with bridge floor；
Multiple humidity sensors, it is disposed on the inwall of the liner tube layer, for sensing the liner tube layer and institute
State the air humidity value in gap between steel wire rope cable core；
Controller, it is connected with the air drying equipment and humidity sensor.
2. prestressing force monaural drag-line according to claim 1, it is characterised in that the thickness of the groove is 0.2~
0.4cm。
3. prestressing force monaural drag-line according to claim 1, it is characterised in that the air drying equipment be placed in bridge tower or
In the box beam of bridge floor, the air drying equipment is provided with air inlet pipe and escape pipe, the air inlet pipe and atmosphere, it is described go out
Tracheae is connected with the air inlet.
4. prestressing force monaural drag-line according to claim 3, it is characterised in that be provided with rain-proof at the air inlet pipe mouth of pipe
Dust guard.
5. prestressing force monaural drag-line according to claim 2, it is characterised in that the liner tube layer is 1.5~2.5mm.
6. the method for stretching of the prestressing force monaural drag-line as described in claim 1~6, it is characterised in that step includes：
1) steel wire rope cable core one end is fixed, the other end, which is clamped near a movable end, the steel wire cable, sets displacement sensing
Device, institute's displacement sensors are used to sense the length value after the steel wire cable tensioning；
2) tensioning is carried out to the steel wire rope cable core, tension force is loaded into the 20% of the minimum Fracture Force of steel wire rope cable core, keep 20~
30min；
3) tension force is loaded into the 65% of the minimum Fracture Force of steel wire rope cable core, keeps 30~40min；
4) tension force is loaded into the 15% of the minimum Fracture Force of steel wire rope cable core, keeps 5~9min, repeats the above steps, until described
Length after the steel wire rope cable core tensioning of displacement transducer sensing is identical with preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710238099.2A CN107059620A (en) | 2017-04-13 | 2017-04-13 | Prestressing force monaural drag-line and its method for stretching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710238099.2A CN107059620A (en) | 2017-04-13 | 2017-04-13 | Prestressing force monaural drag-line and its method for stretching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107059620A true CN107059620A (en) | 2017-08-18 |
Family
ID=59599400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710238099.2A Pending CN107059620A (en) | 2017-04-13 | 2017-04-13 | Prestressing force monaural drag-line and its method for stretching |
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| Country | Link |
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| CN (1) | CN107059620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910951A (en) * | 2020-08-28 | 2020-11-10 | 衡阳嵘昇生物颗粒有限公司 | Panel and timber transfer device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11350420A (en) * | 1998-06-09 | 1999-12-21 | Se:Kk | Wind-resistant vibration damping method for cable and its device |
| CN101725061A (en) * | 2009-11-14 | 2010-06-09 | 贵州钢绳股份有限公司 | Segmentation pretension method for extra-high strength large-specification wire rope |
| CN103255715A (en) * | 2013-04-24 | 2013-08-21 | 河海大学 | Stay cable dehumidification and anticorrosion system |
| CN104264585A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Stay cable with porous hollow housing for cable stayed bridge |
| CN105672138A (en) * | 2016-03-31 | 2016-06-15 | 中铁四局集团第一工程有限公司 | Through type stayed cable installation circulation system and cable threading construction method thereof |
| CN105951597A (en) * | 2016-07-22 | 2016-09-21 | 贵州钢绳股份有限公司 | Steel wire rope for suspension bridge sling and manufacturing method thereof |
| CN106284075A (en) * | 2016-09-23 | 2017-01-04 | 石家庄铁道大学 | Bifilar helix hot extruded polyethylene half parallel steel wire suspension cable and parameter determination method thereof |
-
2017
- 2017-04-13 CN CN201710238099.2A patent/CN107059620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11350420A (en) * | 1998-06-09 | 1999-12-21 | Se:Kk | Wind-resistant vibration damping method for cable and its device |
| CN101725061A (en) * | 2009-11-14 | 2010-06-09 | 贵州钢绳股份有限公司 | Segmentation pretension method for extra-high strength large-specification wire rope |
| CN103255715A (en) * | 2013-04-24 | 2013-08-21 | 河海大学 | Stay cable dehumidification and anticorrosion system |
| CN104264585A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Stay cable with porous hollow housing for cable stayed bridge |
| CN105672138A (en) * | 2016-03-31 | 2016-06-15 | 中铁四局集团第一工程有限公司 | Through type stayed cable installation circulation system and cable threading construction method thereof |
| CN105951597A (en) * | 2016-07-22 | 2016-09-21 | 贵州钢绳股份有限公司 | Steel wire rope for suspension bridge sling and manufacturing method thereof |
| CN106284075A (en) * | 2016-09-23 | 2017-01-04 | 石家庄铁道大学 | Bifilar helix hot extruded polyethylene half parallel steel wire suspension cable and parameter determination method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910951A (en) * | 2020-08-28 | 2020-11-10 | 衡阳嵘昇生物颗粒有限公司 | Panel and timber transfer device |
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Application publication date: 20170818 |