CN107024308A - A kind of method of testing of intermediate plate anchorage snap-in force - Google Patents
A kind of method of testing of intermediate plate anchorage snap-in force Download PDFInfo
- Publication number
- CN107024308A CN107024308A CN201610976658.5A CN201610976658A CN107024308A CN 107024308 A CN107024308 A CN 107024308A CN 201610976658 A CN201610976658 A CN 201610976658A CN 107024308 A CN107024308 A CN 107024308A
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- China
- Prior art keywords
- anchorage
- intermediate plate
- pressure
- pressure sensor
- steel strand
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of method of testing of intermediate plate anchorage snap-in force, belong to prestressed stretch-draw test correlative technology field.Its key step includes：Anchorage, intermediate plate, limiting plate, first cushion block, pressure sensor, second cushion block and jack are installed successively from right to left on steel strand wires, pressure then is applied to cushion block, intermediate plate and anchorage is engaged and closely measures setting value F0；Then will left side each several part remove after anchorage, intermediate plate, limiting plate, first cushion block, pressure sensor, second cushion block and jack are installed successively on the right side of anchorage, pressure then is applied to cushion block, pressure value F, as anchorage and intermediate plate snap-in force F when measuring intermediate plate and anchorage separation.
Description
Technical field
Correlative technology field is tested the present invention relates to prestressed stretch-draw, is to be related to a kind of intermediate plate anchorage occlusion specifically
The method of testing of power.
Background technology
Prestress anchoraging is a kind of active anchorage technology, and its key is the size of working stress under anchor, loss of prestress
It is to cause the key factor that working stress changes under anchor.Therefore, it is accomplished by a kind of accurately detection for prestressed anchor fixing structure
Technology judges the size of anchor lower prestress.
At present, domestic existing more use reverse drawing method or Pulling escape detection anchor lower prestress.And the drawbacks of existing detection mode
It is to pull out judgement stretching force using the flex point of theory analysis stretching force-elongation relation curve appearance and by anchor clipper
Size, but have ignored influence of the snap-in force to detection stretching force between anchorage and intermediate plate, cause tensioning force value under detection anchor bigger than normal,
Potential safety hazard is caused to engineering structure.
So, the size of snap-in force is particularly important to stretching force under accurate detection anchor between correct test anchorage and intermediate plate.
The content of the invention
The purpose of the present invention is that there is provided a kind of test side of intermediate plate anchorage snap-in force to overcome above-mentioned the deficiencies in the prior art
Method.
In order to reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of method of testing of intermediate plate anchorage snap-in force, comprises the following steps：
(1) assembling of anchorage, intermediate plate and steel strand wires is integrated, limiting plate is installed in the left side of steel strand wires, and the steel strand wires have
Left end and right-hand member；
(2) installed on the steel strand wires on the left of limiting plate and pressure is set on the steel strand wires between two cushion blocks, two cushion blocks
Sensor；
(3) left end of steel strand wires is run through fixed after jack；
(4) the one of cushion block of jack pair applies pressure, is engaged intermediate plate and anchorage close, and pass through pressure sensor
Pressure value feedback make jack apply pressure reach setting value F0, then dismantle jack, cushion block and pressure sensor；
(5) in right side repeat step (1)-(3) of anchorage, and the pressure sensor in step (2) is changed to high frequency
The pressure sensor of acquisition function；
(6) reading of pressure sensor in step (5) is reset, and pressure value is applied to intermediate plate by jack pair cushion block
Depart from from anchorage, obtain the snap-in force F of anchorage and intermediate plate, and obtain steel strand wires displacement elongation；
In above-mentioned method, it is preferred that step (2) described pressure sensor is vibrating wire pressure sensor.
In above-mentioned method, it is preferred that the pressure sensor replaced in step (5) is strain pressure transducer.
In above-mentioned method, it is preferred that in step (7), steel strand wires elongation, and elongation are detected by displacement meter
It is transferred to computer.
In above-mentioned method, it is preferred that obtain pressure value by comprehensive tester.
In above-mentioned method, it is preferred that the cushion block is cylinder or rectangular parallelepiped structure.
The beneficial effects of the invention are as follows：
The snap-in force of anchorage and intermediate plate is tested out by way of experiment, provided when being calculated for follow-up tensioning value according to
According to, to reduction engineering structure present in potential safety hazard be significant.
Brief description of the drawings
Fig. 1 is anchorage and intermediate plate scheme of installation in the present invention；
Fig. 2 is tensile state structural representation in the present invention；
Fig. 3 is reverse drawing status architecture schematic diagram in the present invention；
In figure：
1st, anchorage；2nd, intermediate plate；3rd, steel strand wires；4th, anchor cup；5th, anchor cup osculum side；6th, anchor cup great Kou sides；7th, limiting plate；
8th, cushion block；9th, vibrating wire pressure sensor；10th, strain pressure transducer；11st, jack；12nd, oil pump；13rd, high precision displacement
Meter；14th, comprehensive tester；15th, computer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment：A kind of method of testing of intermediate plate anchorage snap-in force, including positive drawing and reverse drawing two parts.When being tested,
Just drawn first, the state just drawn as depicted in figs. 1 and 2, is specially：
By intermediate plate 2 and anchorage 1, (4) anchorage 1 is arranged in steel strand wires 3 with the rim of a cup passed through for steel strand wires 3, i.e. anchor cup
Between position；
(Fig. 1 shows left side) installs successively on the steel strand wires 3 of anchor cup osculum side 5：Limiting plate 7, first cushion block 8, shake
String formula pressure sensor 9, second cushion block 8, single hole jack 11 and oil pump 12, and vibrating wire pressure sensor 9 is connected comprehensive
Close tester 14；
Need to ensure that the center line of each component is overlapped with the axis of steel strand wires in installation process, it is impossible to off normal situation occur,
Cause structure stress in stretching process uneven, can be read by comprehensive tester 14 and apply stressed size.
Jack 11 is made to pressurize, to be added to predetermined pull value F0, exist between anchorage 1 and intermediate plate 2 after snap-in force, stop adding
Pressure.To ensure the security of experimentation, predetermined pull value F is being reached0Afterwards, slow removal oil pressure is needed, instrument is dismantled.
Tensioning measures the snap-in force between anchorage and intermediate plate using reverse drawing method after finishing.
As shown in figure 3, being installed successively in anchor cup great Kou sides 6 (Fig. 1 shows right side)：Limiting plate 7, first cushion block 8, strain
Formula pressure sensor 10, second cushion block 8, jack 11 and oil pump 12.
Meanwhile, the colligation high precision displacement meter 13 on jack 11, for measuring steel strand wires elongation；By strain-type pressure
Sensor 10 and high precision displacement meter 13 are connected with computer 15.
The reading of strain pressure transducer 10 and high precision displacement meter 13 is reset by computer, then, passes through oil pump
The piston rod of 12 driving jack 11 pressurizes to cushion block 8, untill intermediate plate 2 departs from anchorage 1.
When intermediate plate 2 departs from anchorage 1, the flex point pressure value F of stress-elongation spirogram is obtained.
Intermediate plate 2 departs from after anchorage 1, stops pressurization.
The flex point pressure value F of stress-elongation spirogram is read by computer, then the snap-in force of anchorage 1 and intermediate plate 2 is F.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to embodiment will be apparent for those skilled in the art, as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention, is not described in detail
The part presented with partial enlargement, is prior art, herein without repeating.Therefore, the present invention is not intended to be limited to herein
These shown embodiments, and it is to fit to the most wide scope consistent with feature with principles disclosed herein.
Claims (6)
1. a kind of method of testing of intermediate plate anchorage snap-in force, it is characterised in that comprise the following steps：
(1) assembling of anchorage, intermediate plate and steel strand wires is integrated, limiting plate is installed in the left side of steel strand wires, and the steel strand wires have left end
And right-hand member；
(2) installed on the steel strand wires on the left of limiting plate and pressure sensing is set on the steel strand wires between two cushion blocks, two cushion blocks
Device；
(3) left end of steel strand wires is run through fixed after jack；
(4) the one of cushion block of jack pair applies pressure, is engaged intermediate plate and anchorage close, and the pressure for passing through pressure sensor
The pressure that force value feedback makes jack apply reaches setting value F0, then dismantle jack, cushion block and pressure sensor；
(5) in right side repeat step (1)-(3) of anchorage, and the pressure sensor in step (2) is changed to high frequency collection
The pressure sensor of function；
(6) reading of pressure sensor in step (5) is reset, and pressure value is applied to intermediate plate from anchor by jack pair cushion block
Depart from tool, obtain the snap-in force F of anchorage and intermediate plate, and obtain steel strand wires displacement elongation.
2. method of testing according to claim 1, it is characterised in that step (2) described pressure sensor is type vibration wire pressure
Force snesor.
3. method of testing according to claim 1, it is characterised in that the pressure sensor replaced in step (5) is strain
Formula pressure sensor.
4. method of testing according to claim 1, it is characterised in that in step (6), is detected by displacement meter and extended
Amount, and elongation is transferred to computer.
5. method of testing according to claim 1, it is characterised in that pressure value is obtained by comprehensive tester.
6. method of testing according to claim 1, it is characterised in that the cushion block is cylinder or rectangular parallelepiped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976658.5A CN107024308A (en) | 2016-10-28 | 2016-10-28 | A kind of method of testing of intermediate plate anchorage snap-in force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976658.5A CN107024308A (en) | 2016-10-28 | 2016-10-28 | A kind of method of testing of intermediate plate anchorage snap-in force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107024308A true CN107024308A (en) | 2017-08-08 |
Family
ID=59525254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976658.5A Pending CN107024308A (en) | 2016-10-28 | 2016-10-28 | A kind of method of testing of intermediate plate anchorage snap-in force |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283049A (en) * | 2018-07-16 | 2019-01-29 | 山东大学 | A kind of method of discrimination of Pulling escape testing result |
| CN110132349A (en) * | 2019-05-06 | 2019-08-16 | 山东大学 | The system and method for prestressed concrete beam temperature gradient identification effective prestress |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5248789B2 (en) * | 2006-09-13 | 2013-07-31 | 曙ブレーキ工業株式会社 | Calibration method for tension detector |
| CN204269480U (en) * | 2014-11-18 | 2015-04-15 | 河北高达电子科技有限公司 | With the prestressed stretch-draw testing table of force snesor |
| CN105784235A (en) * | 2016-04-13 | 2016-07-20 | 王继成 | Prestress detection system under anchor |
| CN105865690A (en) * | 2016-05-20 | 2016-08-17 | 四川升拓检测技术股份有限公司 | Steel strand prestress detection device and measuring method based on reverse pull method |
-
2016
- 2016-10-28 CN CN201610976658.5A patent/CN107024308A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5248789B2 (en) * | 2006-09-13 | 2013-07-31 | 曙ブレーキ工業株式会社 | Calibration method for tension detector |
| CN204269480U (en) * | 2014-11-18 | 2015-04-15 | 河北高达电子科技有限公司 | With the prestressed stretch-draw testing table of force snesor |
| CN105784235A (en) * | 2016-04-13 | 2016-07-20 | 王继成 | Prestress detection system under anchor |
| CN105865690A (en) * | 2016-05-20 | 2016-08-17 | 四川升拓检测技术股份有限公司 | Steel strand prestress detection device and measuring method based on reverse pull method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283049A (en) * | 2018-07-16 | 2019-01-29 | 山东大学 | A kind of method of discrimination of Pulling escape testing result |
| CN110132349A (en) * | 2019-05-06 | 2019-08-16 | 山东大学 | The system and method for prestressed concrete beam temperature gradient identification effective prestress |
| CN110132349B (en) * | 2019-05-06 | 2021-11-23 | 山东大学 | System and method for identifying effective prestress of prestressed concrete beam through temperature gradient |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170808 |
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| RJ01 | Rejection of invention patent application after publication |