CN108776066A - A kind of anchor head pull force tester and anchor head pull test method - Google Patents
A kind of anchor head pull force tester and anchor head pull test method Download PDFInfo
- Publication number
- CN108776066A CN108776066A CN201810358272.7A CN201810358272A CN108776066A CN 108776066 A CN108776066 A CN 108776066A CN 201810358272 A CN201810358272 A CN 201810358272A CN 108776066 A CN108776066 A CN 108776066A
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- CN
- China
- Prior art keywords
- anchor head
- pull
- jack
- tester
- force tester
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
Abstract
A kind of anchor head pull force tester of present invention offer and anchor head pull test method, wherein, anchor head pull force tester, including pull rod, pressure ring sensor, anchor head, steel wire rope and jack are not poured, steel wire rope one end is fixed therein on an anchor head, and the other end passes through and do not pour anchor head and be fixed on another anchor head；Four pull rods are uniformly arranged on anchor head, and are fixed by nut and anchor head, and pull rod passes through and do not pour anchor head and fixed with nut at pull rod both ends, and pressure ring sensor is equipped between one of anchor head and nut.A kind of anchor head pull force tester of the present invention, steel wire rope can be stretched by applying pressure to jack, it is transferred on four pressure ring sensors via the anchor head poured using the pulling force of steel wire rope, it is measured by comprehensive tester to obtain the frequency of every string in pressure ring sensor, steel wire rope stress value after jack pressurization is calculated by data processing, to obtain the casting quality and bearing capacity of anchor head.
Description
Technical field
The present invention relates to bridge test technical fields, are drawn more particularly, to a kind of anchor head pull force tester and anchor head
Power test method.
Background technology
The bridge floor of suspension bridge is suspended in by the different hoist cable of length on main rope, and bridge floor is made to have certain glacing flatness.It is outstanding
The main rope of cable bridge is generally supported on two king-posts, and tower top is equipped with saddle bracket, and the end of main rope is fixed on ground by anchor ingot
In base.As described above, the main load-bearing construction of suspension bridge is therefore main rope, tower and anchor ingot are anchored at anchor as by main rope
The casting construction technology of important component in ingot, anchor head is particularly significant.
Through investigation, the current country there is no test mechanism to have the ability to evaluate anchor head casting process.To ensure engineering matter
Amount is badly in need of inventing a set of anchor head pull test method, be identified the casting process of anchor head, it is ensured that the technique meet design and
Code requirement.
Invention content
The present invention provide it is a kind of it is simple in structure, installation convenient test anchor head pull force tester and anchor head pull test side
Method, to reach the technology gap for filling up and there is no test and assess to similar anchor head casting process currently on the market.
According to an aspect of the present invention, a kind of anchor head pull force tester is provided, for the anchor to being cast on bridge
Head carries out tensile test, the anchor head pull force tester includes pull rod, pressure ring sensor, do not pour anchor head, steel wire rope and
Jack, described steel wire rope one end are fixed therein on an anchor head, and the other end does not pour anchor head described in and fixes
On another described anchor head；Four pull rods are uniformly arranged on the anchor head, and are fixed by nut and the anchor head,
And the pull rod pass through it is described do not pour anchor head and fixed with nut at the pull rod both ends, one of them described anchor head with it is described
The pressure ring sensor is equipped between nut, another described anchor head and described do not pour are equipped with jack between anchor head.
On the basis of said program preferably, the anchor head that do not pour includes pouring end and fixing end, described to pour end and institute
It states fixing end and forms step surface, and be equipped with four equally distributed tension holes for steady brace in the fixing end, and
The anchor head is equipped with tapered pouring hole.
On the basis of said program preferably, the rod outer sleeve is equipped with a steel pipe.
On the basis of said program preferably, the anchor head is the anchor that alloy is poured in the pouring hole for not pouring anchor head
Head.
The present invention also provides a kind of anchor head pull test methods, use a kind of anchor head pull force tester as described above
It is detected the anchor head placing intensity.
On the basis of said program, anchor head pull test method of the invention includes the following steps,
S1. anchor head pull force tester as described in claim 1 is built, by pressure ring sensor and comprehensive tester electricity
Even；
S2. the jack position is adjusted, middle position up and down is at, to the company of the anchor head pull force tester
Socket part reads the initial value on the comprehensive tester into fastening；
S3. start jack to pressurize simultaneously, obtain the elongation of jack, read the number on the comprehensive tester,
Obtain pulling force suffered by anchor head；
S4. step S3 is repeated, until the value of thrust is equal to or more than design value.
A kind of anchor head pull force tester of the present invention can stretch steel wire rope by applying pressure to jack, utilize steel
The pulling force of cord is transferred to via the anchor head poured on four pressure ring sensors, is measured by comprehensive tester to obtain pressure
The frequency of every string in power ring sensor calculates steel wire rope stress value after jack pressurization, to obtain by data processing
The casting quality and bearing capacity of anchor head, ensure the safety of bridge.
Description of the drawings
Fig. 1 is the structure chart of the anchor head pull force tester of the present invention；
Fig. 2 is the sectional view for not pouring anchor head of the present invention；
Fig. 3 is the vertical view of Fig. 2 of the present invention；
Fig. 4 is the flow chart of the anchor head pull test method of the present invention.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Referring to Fig. 1, and combine shown in Fig. 2 and Fig. 3, the present invention provides a kind of anchor head pull force tester, for pair
It is cast in anchor head 43 on bridge and carries out tensile test, anchor head pull force tester includes pull rod 10, pressure ring sensor 20, not
Pour anchor head 30, steel wire rope 40 and jack 41.
Wherein, for steel wire rope 40 for transmitting pulling force, which is fixed therein an anchor head cast
On 43, the other end of steel wire rope 40, which passes through, not to be poured anchor head 30 and is fixed on another anchor head 43；Four pull rods 10 are uniformly arranged
On anchor head 43,10 one end of pull rod is fixed on an anchor head cast 43, and the other end is after not pouring anchor head 30 and another
On one anchor head 43 cast, pull rod 10 is fixed by nut 42 and the anchor head 43 cast, and pull rod 10 and not
Pour the both ends fixation of use nut 42 respectively of anchor head 30.
In order to obtain the pressure value on each pull rod 10, the present invention is in pull rod 10 and one of them anchor head 43 poured
Upper installing pressure ring sensor 20 does not pour in another anchor head poured 43 and and is equipped with jack 41 between anchor head 30,
Apply pressure by jack 41, reads the pressure value on each pull rod 10 using pressure ring sensor 20 and be transferred to comprehensive survey
Instrument is tried, to obtain pouring suffered pulling force on anchor head 43,
Further, as shown in Figures 2 and 3, the anchor head 30 that do not pour of the invention includes pouring end 31 and fixing end 32, is poured
It builds end 31 and the fixing end 32 forms step surface 33, and be equipped in fixing end 32 and uniformly divide for four of steady brace 10
The tension hole 34 of cloth, and anchor head 43 is equipped with tapered pouring hole 35, four pull rods 10 are each passed through tension hole 34 and pass through spiral shell
Bolt is fixed.In order to enhance the stability of nut 42 and pressure ring sensor 20, the accuracy of guarantee test, the present invention is in nut 42
With gasket 51 is had additional at pressure ring sensor 20 respectively, to adjust its being completely embedded property.
The excessive screw thread stripped thread caused between nut 42 and pull rod 10 of top lift that jack 41 applies in order to prevent, pull rod 10
It is set with a steel pipe 36 outside.
It is worth noting that anchor head 43 of the invention is the anchor head for pouring alloy in the pouring hole 35 for not pouring anchor head 30
43。
Shown in Fig. 4, the present invention also provides a kind of 43 pull test methods of anchor head, use one kind as above
Anchor head pull force tester is detected 43 placing intensity of anchor head.
The 43 pull test method of anchor head of the present invention, includes the following steps,
S1. anchor head pull force tester as above is built, pressure ring sensor 20 is electrically connected with comprehensive tester, and is testing
Farm Planning tests material requested and instrument well, according to 43 casting process of anchor head casting anchor head 43；
S2. 41 position of the jack is adjusted, middle position up and down is at, to the anchor head pull force tester
For interconnecting piece into fastening, reading ensures anchor head 43 and nut 42, nut 42 and washer, washer and pressure ring sensor 20 and pressure rings
Contact between sensor 20 and anchor head 43 must be closely knit to prevent bias-pressure phenomenon guarantee test accuracy；In experimental provision
After installation is complete, before the pressurization of jack 41, the initial value on the comprehensive tester is read；
S3. start two jack 41 to pressurize simultaneously, in pressure process, stretching for jack 41 need to be measured with the tape measure moment
Long amount prevents bias condition from occurring, reduces test error, obtain jack to ensure the synchronous same amount of two pressurizations of jack 41
41 elongation；Suspend pressurization when being pressurized to a certain amount of, read the number on comprehensive tester, by data processing, obtains
Pulling force suffered by anchor head 43；
If S4. pulling force is not up to design value at this time, continue to pressurize；If pulling force has reached or has been more than design value, stop
Only pressurize, 41 pressure of slow release jack, off-test.
It is worth noting that data processing method of the invention is as follows：In stretching process, pulling force that anchor head 43 is subject to：
F=n × N
In formula：The pulling force that certain moment anchor head 43 of F-is subject to；
Certain moment of N-acts on pressure (drawing) power on pressure ring sensor 20；
The quantity of n-pressure ring sensor 20.
According to pressure sensor operation instructions：
N=a+b × Δ ε
In formula：A-correction factor can report to obtain according to the manufacture calibration that instrument producer provides；
B-calibration coefficient can report to obtain according to the manufacture calibration that instrument producer provides；
Δ ε-strain differential, that is, strain value subtracts initial strain value in testing.
Strain value ε is calculated according to the frequency that instrument side obtains, i.e.,：
ε=K × f2
In formula：The coefficient of string wire in K-pressure ring sensor 20, wherein
K (trichord)=0.0005383, K (four, six strings)=0.00084107；
The frequency of the every string of pressure ring sensor 20 is measured in f-experiment.
In experimentation, (1) anchor head 43 when the value of thrust that anchor head 43 is subject to is less than design value is destroyed, then this anchor head 43
Casting quality does not meet design requirement；(2) when the value of thrust that anchor head 43 is subject to is greater than or equal to design value, anchor head 43 is not broken
Bad, then this anchor head 43 casting quality meets design requirement.
A kind of anchor head pull force tester of the present invention can stretch steel wire rope 40, profit by applying pressure to jack 41
Be transferred on four pressure ring sensors 20 via the anchor head 43 poured with the pulling force of steel wire rope 40, by comprehensive tester with
The frequency for obtaining every string in pressure ring sensor 20 is measured, calculate steel wire rope 40 by data processing pressurizes in jack 41
Stress value afterwards ensures the safety of bridge to obtain the casting quality and bearing capacity of anchor head 43.
The test data that the test method of the present invention obtains can intuitively reflect the value of thrust in anchor head 43, to judge anchor
First 43 casting quality and bearing capacity eliminates the quality and security risk of 43 casting process of anchor head in formal construction, improves
Production efficiency.The blank of domestic bridge construction industry in this regard is filled up simultaneously, to occur in bridge construction in the future
Similar problems provide advantageous experience.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (6)
1. a kind of anchor head pull force tester, for carrying out tensile test to the anchor head being cast on bridge, which is characterized in that institute
It states anchor head pull force tester to include pull rod, pressure ring sensor, do not pour anchor head, steel wire rope and jack, the steel wire rope
One end is fixed therein on an anchor head, and the other end does not pour anchor head described in and is fixed on another anchor head
On；Four pull rods are uniformly arranged on the anchor head, and are fixed by nut and the anchor head, and the pull rod passes through institute
It states and does not pour anchor head and fixed with nut at the pull rod both ends, be equipped between one of them described anchor head and the nut described
Pressure ring sensor, another described anchor head and described do not pour are equipped with jack between anchor head.
2. a kind of anchor head pull force tester as described in claim 1, spy are characterized in that, the anchor head that do not pour includes pouring
End and fixing end are built, the end that pours forms step surface with the fixing end, and is equipped in the fixing end and is drawn for fixed
Four equally distributed tension holes of bar, and the anchor head is equipped with tapered pouring hole.
3. a kind of anchor head pull force tester as described in claim 1, spy are characterized in that the rod outer sleeve is equipped with a steel
Pipe.
4. a kind of anchor head pull force tester as described in claim 1, spy are characterized in that, the anchor head is not poured described
Build the anchor head that alloy is poured in the pouring hole of anchor head.
5. a kind of anchor head pull test method, spy are characterized in that, a kind of anchor head pull test as described in claim 1 is used
Device is detected the anchor head placing intensity.
6. a kind of anchor head pull test method as claimed in claim 5, spy is characterized in that, includes the following steps,
S1. anchor head pull force tester as described in claim 1 is built, pressure ring sensor is electrically connected with comprehensive tester；
S2. the jack position is adjusted, middle position up and down is at, to the interconnecting piece of the anchor head pull force tester
Into fastening, the initial value on the comprehensive tester is read；
S3. start jack to pressurize simultaneously, obtain the elongation of jack, read the number on the comprehensive tester, obtain
Pulling force suffered by anchor head；
S4. step S3 is repeated, until the value of thrust of the anchor head is equal to or more than design value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358272.7A CN108776066B (en) | 2018-04-20 | 2018-04-20 | Anchor head tension test device and anchor head tension test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358272.7A CN108776066B (en) | 2018-04-20 | 2018-04-20 | Anchor head tension test device and anchor head tension test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108776066A true CN108776066A (en) | 2018-11-09 |
| CN108776066B CN108776066B (en) | 2020-07-10 |
Family
ID=64026474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810358272.7A Active CN108776066B (en) | 2018-04-20 | 2018-04-20 | Anchor head tension test device and anchor head tension test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108776066B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490078A (en) * | 2018-12-24 | 2019-03-19 | 中铁九桥工程有限公司 | A kind of work shape and work become the tooling and method of box anchor pole tension test |
| CN109975110A (en) * | 2019-04-29 | 2019-07-05 | 中交二公局第五工程有限公司 | A kind of socket bearing capacity test method and device |
| CN111089168A (en) * | 2019-12-19 | 2020-05-01 | 西北核技术研究院 | Anti-drop tensile end structure of glass fiber reinforced plastic pull rod |
| CN111855400A (en) * | 2020-06-12 | 2020-10-30 | 中交二公局第二工程有限公司 | Suspension bridge AS method main cable strand boot steel wire test system and test method thereof |
| CN109975110B (en) * | 2019-04-29 | 2024-05-03 | 中交二公局第五工程有限公司 | Method and device for detecting bearing capacity of cable joint |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490078A (en) * | 2018-12-24 | 2019-03-19 | 中铁九桥工程有限公司 | A kind of work shape and work become the tooling and method of box anchor pole tension test |
| CN109975110A (en) * | 2019-04-29 | 2019-07-05 | 中交二公局第五工程有限公司 | A kind of socket bearing capacity test method and device |
| CN109975110B (en) * | 2019-04-29 | 2024-05-03 | 中交二公局第五工程有限公司 | Method and device for detecting bearing capacity of cable joint |
| CN111089168A (en) * | 2019-12-19 | 2020-05-01 | 西北核技术研究院 | Anti-drop tensile end structure of glass fiber reinforced plastic pull rod |
| CN111089168B (en) * | 2019-12-19 | 2022-04-01 | 西北核技术研究院 | Anti-drop tensile end structure of glass fiber reinforced plastic pull rod |
| CN111855400A (en) * | 2020-06-12 | 2020-10-30 | 中交二公局第二工程有限公司 | Suspension bridge AS method main cable strand boot steel wire test system and test method thereof |
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|---|---|
| CN108776066B (en) | 2020-07-10 |
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