CN203904842U - Prestress tension automatic control system for cable-stayed bridge - Google Patents
Prestress tension automatic control system for cable-stayed bridge Download PDFInfo
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- CN203904842U CN203904842U CN201420272486.XU CN201420272486U CN203904842U CN 203904842 U CN203904842 U CN 203904842U CN 201420272486 U CN201420272486 U CN 201420272486U CN 203904842 U CN203904842 U CN 203904842U
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- control system
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- prestress
- power unit
- automatic control
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Abstract
The utility model discloses a prestress tension automatic control system for a cable-stayed bridge. The prestress tension automatic control system comprises a steel stranded wire and is provided with a hydraulic power unit. A digital intelligent control system is mounted on and connected with the hydraulic power unit. The hydraulic power unit is connected to an intelligent tension jack through an oil inlet pipeline and an oil outlet pipeline. The steel stranded wire penetrates the intelligent tension jack. A displacement sensor is further mounted in the intelligent tension jack. Ejector pins for preventing prestress loss are connected to the rear end of the intelligent tension jack. A first pressure sensor is mounted at the rear end of the intelligent tension jack. A working clamp piece is connected to the rear end of each ejector pin. A working anchor plate is disposed at the rear ends of the working clamp pieces. A standing-preventing rack is further mounted on the working anchor plate. A single-hole tool anchor and a single-hole clamp piece which are matched with a second pressure sensor are further disposed outside the intelligent tension jack. The prestress tension automatic control system has the advantages that two penetrating force sensors are matched with the digital intelligent control system to control hydraulic force, tensioning of different steel stranded wire harnesses are completed through the intelligent tension jack and the single-hole tool anchor respectively, consistent prestress of each harness is guaranteed, and manual error and modification are avoided.
Description
technical field:
The utility model relates to equipment for bridge construction field, relates in particular to a kind of cable stayed bridge prestressed stretch-draw automatic control system.
background technology:
Along with scientific and technical development, epoxy coating strand is just being widely applied to the bridges in highway engineering fields such as cable stayed bridge, low-pylon cable-stayed bridge, external prestressing, arch bridge tie-rod as a kind of novel cable body material with excellent antiseptic property.In inclined guy cable stretching construction, extensive use in the construction of large bridge at home and abroad of the construction technology of single hanging cable, single tendon stretch, especially have easy construction, large lifting equipment less investment, the anticorrosion successful of Cheng Qiaohou and bridge keep changing under operational regime drag-line for convenience of etc. feature.And engineering all needs many steel strand of tractive conventionally, if pulling force difference is excessive, can cause prestress change, bring various problems; Therefore in cable tension process, consistent in order to ensure the force retaining of every steel strand tractive, need a kind of special control system.
utility model content:
The purpose of this utility model is just to provide a kind of cable stayed bridge prestressed stretch-draw automatic control system, and solving common engineering all needs many steel strand of tractive, if pulling force difference is excessive, can cause prestress change, brings various problems; Therefore in cable tension process, consistent in order to ensure the force retaining of every steel strand tractive, the problem of a kind of special control system of needs.
The technical solution adopted in the utility model is:
A kind of cable stayed bridge prestressed stretch-draw automatic control system, comprise steel strand: there is hydraulic power unit, digital intelligent control system is installed on hydraulic power unit and is attached thereto, hydraulic power unit is connected to intelligent tensioning jack by in-line and fuel-displaced pipeline, in intelligent tensioning jack, steel strand are penetrated, displacement transducer is also installed in intelligent tensioning jack, intelligent tensioning jack rear end is connected with anti-loss of prestress push rod, and the first pressure sensor is installed, anti-loss of prestress push rod rear end is connected with work clip sheet, work clip sheet rear end is work anchor slab, on work anchor slab, anti-stand is also installed, outside intelligent tensioning jack, is separately provided with single hole moveable anchor and single hole intermediate plate and coordinates the second pressure sensor to use.
On described work anchor slab, have some steel strand anchor points, intelligent tensioning jack and single hole moveable anchor are worked respectively, guarantee that the prestressing force of each steel strand anchor point is consistent.
Compared with prior art, the beneficial effects of the utility model are:
The utility model uses two vertically-displacable power sensors, one is positioned over the 3rd rope or the 5th rope, monitoring rope is pulled bearing capacity change, monitor in real time stretching rope for one and pull tension force, pull with monitoring rope that bearing capacity change sensor is positioned over the 3rd rope or the 5th rope is described stretching force desired value, coordinate digital intelligent control system control hydraulic coupling, complete respectively the stretch-draw of different steel wire bundles with intelligent tensioning jack and single hole moveable anchor.Guarantee that every a branch of prestressing force is consistent, stops mistake and amendment.
brief description of the drawings:
Accompanying drawing 1 is the utility model structural representation.
detailed description of the invention:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
A kind of cable stayed bridge prestressed stretch-draw automatic control system, comprise steel strand: there is hydraulic power unit 1, digital intelligent control system 2 is installed on hydraulic power unit 1 and is attached thereto, hydraulic power unit 1 is connected to intelligent tensioning jack 3 by in-line and fuel-displaced pipeline 12, steel strand 11 in intelligent tensioning jack 3, are penetrated, displacement transducer 10 is also installed in intelligent tensioning jack 3, intelligent tensioning jack 3 rear ends are connected with anti-loss of prestress push rod 4, and the first pressure sensor 7 is installed, anti-loss of prestress push rod 4 rear ends are connected with work clip sheet 6, work clip sheet 6 rear ends are work anchor slab 5, on work anchor slab 5, anti-stand 13 is also installed, outside intelligent tensioning jack, is separately provided with single hole moveable anchor 8 and single hole intermediate plate 9 and coordinates the second pressure sensor 14 to use, on work anchor slab 5, have some steel strand anchor points, intelligent tensioning jack and single hole moveable anchor are worked respectively, guarantee that the prestressing force of each steel strand anchor point is consistent.
When the utility model work:
First determine tensioning process parameter: cable stretching power theory target value, stretch-draw theoretical elongation.Same hole number, every rope uses identical theoretical stretch-draw desired value, theoretical elongation desired value.Same bridge, hole number can not be repeated, data storage taking hole number, rope number is inquiry outline.
Secondly stretching force desired value is used:
Tension force control is used two vertically-displacable power sensors.One is positioned over the 3rd rope or the 5th rope, and monitoring rope is pulled bearing capacity change, monitors in real time stretching rope for one and pulls tension force.Pull with monitoring rope that bearing capacity change sensor is positioned over the 3rd rope or the 5th rope is described stretching force desired value.The each unit of check system normal operation, in digital intelligent control system (2), set on request stretch-draw parameter, start hydraulic power unit (1), by intelligent tensioning jack (3), tension steel strand (11) is put after setting value, work clip sheet (6) clamping steel strand in work anchor slab (5), complete the first bundle stretch-draw from anchor.The second bundle is identical with the first bundle operating principle.When three beams stretch-draw, do not fill work clip sheet (6), in anti-stand (13), the second sensor (14) is installed, special single hole moveable anchor (8) and intermediate plate (9) are installed again, stretching process is with the first bundle, force value and shift value are got setting value, the 4th bundle stretch-draw is carried out stretch-draw by the value of digital intelligent control system (2) automatic acquisition the second sensor (14) and displacement transducer (10) as setting value, principle is the same, complete by that analogy the stretch-draw of all bundles, the first bundle and the second bundle are mended to stretch-draw again, guarantee that every a branch of prestressing force is consistent, stop mistake and amendment.
Above-described embodiment is only preferably embodiment of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, do not departing under the prerequisite of the utility model design, within any apparent improvement and modification all should fall into protection domain of the present utility model.
Claims (2)
1. a cable stayed bridge prestressed stretch-draw automatic control system, comprise steel strand, it is characterized in that: there is hydraulic power unit, digital intelligent control system is installed on hydraulic power unit and is attached thereto, hydraulic power unit is connected to intelligent tensioning jack by in-line and fuel-displaced pipeline, in intelligent tensioning jack, steel strand are penetrated, displacement transducer is also installed in intelligent tensioning jack, intelligent tensioning jack rear end is connected with anti-loss of prestress push rod, and the first pressure sensor is installed, anti-loss of prestress push rod rear end is connected with work clip sheet, work clip sheet rear end is work anchor slab, on work anchor slab, anti-stand is also installed, outside intelligent tensioning jack, is separately provided with single hole moveable anchor and single hole intermediate plate and coordinates the second pressure sensor to use.
2. cable stayed bridge prestressed stretch-draw automatic control system according to claim 1, it is characterized in that: on described work anchor slab, there are some steel strand anchor points, intelligent tensioning jack and single hole moveable anchor are worked respectively, guarantee that the prestressing force of each steel strand anchor point is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272486.XU CN203904842U (en) | 2014-05-23 | 2014-05-23 | Prestress tension automatic control system for cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272486.XU CN203904842U (en) | 2014-05-23 | 2014-05-23 | Prestress tension automatic control system for cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203904842U true CN203904842U (en) | 2014-10-29 |
Family
ID=51779132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272486.XU Expired - Fee Related CN203904842U (en) | 2014-05-23 | 2014-05-23 | Prestress tension automatic control system for cable-stayed bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN203904842U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762884A (en) * | 2015-04-30 | 2015-07-08 | 湖南联智桥隧技术有限公司 | Control method of multi-point synchronous intelligent tensioning system |
| CN107313354A (en) * | 2017-08-17 | 2017-11-03 | 上海浦东新区公路建设发展有限公司 | A kind of Arch Bridge Construction tie-rod regulating system |
| CN107764456A (en) * | 2017-11-15 | 2018-03-06 | 北京华横新技术开发公司 | Measuring system, tensioning system and measuring method |
-
2014
- 2014-05-23 CN CN201420272486.XU patent/CN203904842U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762884A (en) * | 2015-04-30 | 2015-07-08 | 湖南联智桥隧技术有限公司 | Control method of multi-point synchronous intelligent tensioning system |
| CN104762884B (en) * | 2015-04-30 | 2017-04-05 | 湖南联智桥隧技术有限公司 | The control method of Multipoint synchronous intelligent tensioning system |
| CN107313354A (en) * | 2017-08-17 | 2017-11-03 | 上海浦东新区公路建设发展有限公司 | A kind of Arch Bridge Construction tie-rod regulating system |
| CN107764456A (en) * | 2017-11-15 | 2018-03-06 | 北京华横新技术开发公司 | Measuring system, tensioning system and measuring method |
| CN107764456B (en) * | 2017-11-15 | 2024-04-09 | 北京华横科技有限公司 | Measurement system, tensioning system and measurement method |
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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: 20141029 Termination date: 20180523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |