CN206095494U - Control of tension power testing system under prestressed concrete bridge roof beam anchor - Google Patents
Control of tension power testing system under prestressed concrete bridge roof beam anchor Download PDFInfo
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- CN206095494U CN206095494U CN201621120197.3U CN201621120197U CN206095494U CN 206095494 U CN206095494 U CN 206095494U CN 201621120197 U CN201621120197 U CN 201621120197U CN 206095494 U CN206095494 U CN 206095494U
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- anchorage
- prestressed concrete
- provisional
- steel strand
- anchor
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Abstract
The utility model belongs to the technical field of the bridge structures engineering, particularly, involve a control of tension power testing system under prestressed concrete bridge roof beam anchor. Permanent ground tackle, provisional ground tackle I, proving ring, provisional ground tackle II, stressing jack, displacement meter, magnetism gauge stand and data acquisition instrument that testing system all concatenated with steel strand wires including the center. Compared with the prior art, prestressed concrete bridge girder iron stranded conductor anchor under part in the control of tension power testing system mostly be building -site equipment commonly used, the combination is simple, convenient operation, analysis results accuracy reliably, easily mastered by engineer, total stretching force of beam forming steel strand wires also can be tested to both control of tension power under the anchor of single testable steel strand wires, is applicable to under the steel strand wires anchor of prestressed concrete beam bridge cross -section the control of tension level detection evaluation of doing all can.
Description
Technical field
The utility model belongs to bridge structure field of engineering technology, it particularly relates to arrive a kind of prestressed concrete bridge
Stretching control force detection pilot system under beam anchor.
Background technology
The pre-applied force of Prestressed Concrete Bridges is typically set by unit in charge of construction personnel using the hydraulic jack tensioning of oneself
The third party supervision management mode of standby, supervisor side station observation, due to the tensioning equipment of unit in charge of construction demarcate not in time, construction
Troop's level is uneven, adds and lacks a sense of responsibility, and causes Partial Bridges stretching force not enough, or even not being open to traffic just occurred and erect
Bridge to crack is of common occurrence, and to bridge structure operation security and durability great potential safety hazard is buried, and seriously threatens bridge
The service life of beam.But cause this phenomenon core reasons be exactly after steel strand wires stretch-draw anchor, it is also not any
Can check the method and instrument and equipment of stretching control force under its anchor, therefore the how actual anchors of effective detection tension steel strand
Lower stretching control force, becomes the focal issue of vast bridge worker common concern.
At present the conventional existing stress mornitoring method of section steel strand wires mainly has galvanomagnetic-effect detection method, gray theory, general
Rate analysis model, dynamic test method, and various methods such as horizontal of steel beam.Wherein galvanomagnetic-effect detection method is generally required in girder
Detecting instrument is installed, rear several method is due to the complexity of xoncrete structure stress system itself, and surveys before concreting
The limitation of test instrument and research technique so that deposit about the method for testing of the existing stress level of steel strand wires in document at present
In larger error, partial test result distortion.Successively occurred in recent years some about under steel strand wires anchor stretching control force it is special
Sharp technology and product design, but because most products are required to the special equipment of professional production manufacturer production, general construction
It is difficult to manufacture and grasps with detection unit.Therefore, how with reference to the most frequently used construction equipment of job site, exploitation can meet inspection
Stretching control force under the Prestressed Concrete Bridges anchor that survey technology is required and can skillfully grasped by vast line engineers and technicians
Practicality detection pilot system become science of bridge building circle in the urgent need to.
The content of the invention
To solve above-mentioned technical problem, the utility model provides stretching control force under a kind of Prestressed Concrete Bridges anchor
Detection pilot system.
Stretching control force detection pilot system, the examination under a kind of Prestressed Concrete Bridges anchor described in the utility model
Check system includes permanent anchorage 1, provisional anchorage I2, proving ring 4, the provisional anchor that center is connected in series with steel strand wires 3
Tool II5, stretch-draw jack 6, displacement meter 7, Magnetic gauge stand 8 and data collecting instrument 9；The left side duct set of the provisional anchorage I2
It is connected on permanent anchorage 1, its right side duct is socketed on proving ring 4；Also adsorb the table that is magnetic on the provisional anchorage I2
Seat 8；The Magnetic gauge stand 8 is provided with displacement meter 7；The left side duct of the provisional anchorage II5 is socketed in the right side of proving ring 4,
Its right side connection stretch-draw jack 6；The data collecting instrument 9 connects proving ring 4 and displacement meter 7.
Stretching control force detection pilot system, described to face under a kind of Prestressed Concrete Bridges anchor described in the utility model
When property anchorage I2 channel diameters are more than or equal to permanent anchorage 1.
Stretching control force detection pilot system, described to face under a kind of Prestressed Concrete Bridges anchor described in the utility model
When property anchorage II5 should be identical with provisional anchorage I1 specifications.
Stretching control force detection pilot system, institute's rheme under a kind of Prestressed Concrete Bridges anchor described in the utility model
The direction for moving 7 pull bars of meter is parallel with the direction of steel strand wires 3, and the pull bar props up provisional anchorage II5.
When in use, can carry out in accordance with the following steps：1), select and the permanent anchorage duct of girder anchored end first
Steel wire bundle to be measured is pierced in order provisional anchorage I and is fixed by match somebody with somebody, diameter not less than the provisional anchorage I of the anchorage；
2), select diameter to be not more than the proving ring of the suitable range of provisional anchorage I, all steel strand wires are passed through from proving ring inside；
3) the provisional anchorage II with provisional anchorage I same sizes, is selected, all steel strand wires is passed through in order provisional anchorage
II；4), a certain steel strand wires to be measured are selected, and the root steel strand wires end is through stretch-draw jack and fixed；5), by displacement meter
It is installed on Magnetic gauge stand, then Magnetic gauge stand is adsorbed the pull bar direction and steel strand that displacement meter is adjusted on provisional anchorage I
Line direction is parallel, and displacement meter pull bar is propped up into provisional anchorage II；6), displacement meter and proving ring are accessed into data collecting instrument
On, first carry out no less than 3 pre- tensioning, prestressing force is not more than 10KN, and debug good all testers and equipment direction,
Contact condition and service behaviour；7), adjust instrument and equipment and enter working condition, and record initial reading F0, then start to open
Jack is drawn, while using sample frequency proving ring and displacement are counted no less than 200HZ continuous samplings pattern synchronizing
Real-time Collection, when displacement meter and proving ring stretching force sampling time-history curves stop tensioning when there is more apparent Jumping platform；8)、
Displacement --- force curve is drawn according to sampling real time data, the minimum of a value near the maximum flex point of curve second level jump is found out
F1, stretching force is controlled under the anchor of tested steel strand wires for F=F1-F0。
Compared with prior art, stretching control force inspection under Prestressed Concrete Bridges steel strand wires anchor described in the utility model
Part in test check system mostly is building-site common equipment, combination is simple and convenient to operate, measurement result accurately and reliably, easily
In being grasped by engineers and technicians, stretching control force under the anchor of single steel strand can be both tested, can also test bunchy steel strand wires
Total stretching force, it is adaptable to cable tensios control level of force detection evaluation under the steel strand wires anchor of prestressed concrete beam bridge section.
Description of the drawings
Fig. 1：Detection pilot system schematic diagram described in the utility model；The permanent anchorages of 1-, 2- provisional anchorage I, 3- are treated
Survey steel strand wires, 4- proving rings, provisional anchorage II, 6- stretch-draw jacks of 5-, 7- displacement meters, 8- Magnetic gauge stands, 9- data acquisitions
Instrument.
Specific embodiment
With reference to specific embodiment to stretching control force detection test system under Prestressed Concrete Bridges steel strand wires anchor
System is described further, but protection domain of the present utility model is not limited to this.
Embodiment 1
A kind of stretching control force detection pilot system under Prestressed Concrete Bridges anchor, the pilot system includes that center is equal
Permanent anchorage 1, provisional anchorage I2, proving ring 4, provisional anchorage II5, the stretch-draw jack be connected in series with steel strand wires 3
6th, displacement meter 7, Magnetic gauge stand 8 and data collecting instrument 9；The left side duct of the provisional anchorage I2 is socketed on permanent anchorage 1,
Its right side duct is socketed on proving ring 4；Also set on the provisional anchorage I2 and be adsorbed with Magnetic gauge stand 8；The Magnetic gauge stand 8
It is provided with displacement meter 7；The left side duct of the provisional anchorage II5 is socketed in the right side of proving ring 4, and its right side connection tensioning is very heavy
Top 6；The data collecting instrument 9 connects proving ring 4 and displacement meter 7.The provisional anchorage I2 channel diameters are more than or equal to permanent
Property anchorage 1.The provisional anchorage II5 should be identical with provisional anchorage I1 specifications.The direction of the pull bar of the displacement meter 7 twists with steel
The direction of line 3 is parallel, and the pull bar props up provisional anchorage II5.
When in use, can carry out in accordance with the following steps：1), select and the permanent anchorage duct of girder anchored end first
Steel wire bundle to be measured is pierced in order provisional anchorage I and is fixed by match somebody with somebody, diameter not less than the provisional anchorage I of the anchorage；
2), select diameter to be not more than the proving ring of the suitable range of provisional anchorage I, all steel strand wires are passed through from proving ring inside；
3) the provisional anchorage II with provisional anchorage I same sizes, is selected, all steel strand wires is passed through in order provisional anchorage
II；4), a certain steel strand wires to be measured are selected, and the root steel strand wires end is through stretch-draw jack and fixed；5), by displacement meter
It is installed on Magnetic gauge stand, then Magnetic gauge stand is adsorbed the pull bar direction and steel strand that displacement meter is adjusted on provisional anchorage I
Line direction is parallel, and displacement meter pull bar is propped up into provisional anchorage II；6), displacement meter and proving ring are accessed into data collecting instrument
On, first carry out no less than 3 pre- tensioning, prestressing force is not more than 10KN, and debug good all testers and equipment direction,
Contact condition and service behaviour；7), adjust instrument and equipment and enter working condition, and record initial reading F0, then start to open
Jack is drawn, while using sample frequency proving ring and displacement are counted no less than 200HZ continuous samplings pattern synchronizing
Real-time Collection, when displacement meter and proving ring stretching force sampling time-history curves stop tensioning when there is more apparent Jumping platform；8)、
Displacement --- force curve is drawn according to sampling real time data, the minimum of a value near the maximum flex point of curve second level jump is found out
F1, stretching force is controlled under the anchor of tested steel strand wires for F=F1-F0.Result of the test is shown in Table 1 on static load anchoring test machine.
Table 1：Stretching control force detection result of the test under steel strand wires anchor
Compared with prior art, stretching control force inspection under Prestressed Concrete Bridges steel strand wires anchor described in the utility model
Part in test check system mostly is building-site common equipment, combination is simple and convenient to operate, measurement result accurately and reliably, easily
In being grasped by engineers and technicians, stretching control force under the anchor of single steel strand can be both tested, can also test bunchy steel strand wires
Total stretching force, it is adaptable to cable tensios control level of force detection evaluation under the steel strand wires anchor of prestressed concrete beam bridge section.
Claims (4)
1. stretching control force detects pilot system under a kind of Prestressed Concrete Bridges anchor, it is characterised in that the pilot system
It is the permanent anchorage (1) that is connected in series with steel strand wires (3) including center, provisional anchorage I (2), proving ring (4), provisional
Anchorage II (5), stretch-draw jack (6), displacement meter (7), Magnetic gauge stand (8) and data collecting instrument (9)；The provisional anchorage I
(2) left side duct is socketed on permanent anchorage (1), and its right side duct is socketed on proving ring (4)；The provisional anchorage
Magnetic gauge stand (8) is also adsorbed with I (2)；The Magnetic gauge stand (8) is provided with displacement meter (7)；The provisional anchorage II (5)
Left side duct be socketed in proving ring (4) right side, its right side connection stretch-draw jack (6)；Data collecting instrument (9) connection is surveyed
Power ring (4) and displacement meter (7).
2. stretching control force detects pilot system under a kind of Prestressed Concrete Bridges anchor according to claim 1, and it is special
Levy and be, provisional anchorage I (2) channel diameter is more than or equal to permanent anchorage (1).
3. stretching control force detects pilot system under a kind of Prestressed Concrete Bridges anchor according to claim 1, and it is special
Levy and be, the provisional anchorage II (5) should be identical with provisional anchorage I (1) specification.
4. stretching control force detects pilot system under a kind of Prestressed Concrete Bridges anchor according to claim 1, and it is special
Levy and be, the direction of displacement meter (7) pull bar is parallel with steel strand wires (3) direction, and the pull bar props up provisional anchorage II (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120197.3U CN206095494U (en) | 2016-10-13 | 2016-10-13 | Control of tension power testing system under prestressed concrete bridge roof beam anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120197.3U CN206095494U (en) | 2016-10-13 | 2016-10-13 | Control of tension power testing system under prestressed concrete bridge roof beam anchor |
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| CN206095494U true CN206095494U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621120197.3U Expired - Fee Related CN206095494U (en) | 2016-10-13 | 2016-10-13 | Control of tension power testing system under prestressed concrete bridge roof beam anchor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817170A (en) * | 2017-12-04 | 2018-03-20 | 柳州欧维姆机械股份有限公司 | A kind of drag-line fire prevention anchoring property experimental rig and its test method |
| CN114323389A (en) * | 2022-03-14 | 2022-04-12 | 四川交达预应力工程检测科技有限公司 | Prestress detection method, non-grading rapid continuous tensioning method and system |
| CN116907691A (en) * | 2023-07-17 | 2023-10-20 | 中冶检测认证有限公司 | Force transducer system for nuclear power station containment pre-stressing system |
-
2016
- 2016-10-13 CN CN201621120197.3U patent/CN206095494U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817170A (en) * | 2017-12-04 | 2018-03-20 | 柳州欧维姆机械股份有限公司 | A kind of drag-line fire prevention anchoring property experimental rig and its test method |
| CN107817170B (en) * | 2017-12-04 | 2024-03-19 | 柳州欧维姆机械股份有限公司 | Cable fireproof anchoring performance test device and test method thereof |
| CN114323389A (en) * | 2022-03-14 | 2022-04-12 | 四川交达预应力工程检测科技有限公司 | Prestress detection method, non-grading rapid continuous tensioning method and system |
| CN116907691A (en) * | 2023-07-17 | 2023-10-20 | 中冶检测认证有限公司 | Force transducer system for nuclear power station containment pre-stressing system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20181013 |