CN205742303U - A kind of hoop tuype torsional excitation device - Google Patents
A kind of hoop tuype torsional excitation device Download PDFInfo
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- CN205742303U CN205742303U CN201620674965.3U CN201620674965U CN205742303U CN 205742303 U CN205742303 U CN 205742303U CN 201620674965 U CN201620674965 U CN 201620674965U CN 205742303 U CN205742303 U CN 205742303U
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- hoop
- interior
- pile
- pile holding
- dowel steel
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Abstract
A kind of hoop tuype torsional excitation device, including interior hoop, outer hoop, ball, ball spacer ferrule, pile holding bolt and dowel steel, ball spacer ferrule is arranged between interior hoop and outer hoop, the outside of interior hoop is provided with outer slot rolling, the inner side of outer hoop is provided with interior slot rolling, described ball is embedded between the outer slot rolling of interior hoop and the interior slot rolling of outer hoop, and is positioned by ball spacer ferrule；Uniformly offering some pile holding bolts hole on interior hoop, in each pile holding bolt hole, correspondence wears a pile holding bolt, and pile holding bolt is overall for interior hoop and pile body are fixed as one；Dowel steel is provided with two, is symmetrically welded at the outside being perpendicular to interior hoop tangent line, and on outer hoop, symmetry offers two and dowel steel level dowel steel location hole, and two dowel steels stretch out respectively from the two of outer hoop dowel steel location holes.This utility model device is decreased or even eliminated the impact on tangential linear velocity of the additional power load, and data are more accurate, are conducive to pile body performance evaluation.
Description
Technical field
This utility model relates to pile detection field, is specifically related to a kind of hoop tuype torsional excitation device.
Background technology
Pile foundation is that China uses most a kind of base forms now, has characteristics that 1. pile bearing is in hard
Or harder supporting course, there is the highest vertical bearing capacity of single pile or Bearing Capacity of Pile Groups；2. pile foundation has the biggest vertical single pile
Rigidity or group's rigidity, under deadweight or interaction of neighboring loads, do not produce excessive differential settlement；3. by huge single pile side
To rigidity or the lateral rigidity of multi-column pier foundation and overall resistance to capsizing thereof, resist due to wind and seismic horizontal loading with
Moment load；4. pile body is supported on stable firm stratum or build-in in basement rock through liquefiable soil layer, causes shallow in earthquake
In the case of portion's liquefaction of soil falls into shake, pile foundation consolidates soil layer by deep and still has enough resistance to compressions and anti-pulling capacity.With
The extensive application of pile foundation, the testing requirement for the performance each side of stake increases the most therewith.Wherein stake is swashed in torsion
The measurement of parameter under form of shaking, existing method mostly is: the most pre-buried cattle at the pile body away from pile crown certain position
Lower limb, and force cell and velocity sensor are installed on bracket, by applying one tangentially along pile body tangential direction to bracket
Exciting, measures the pile body during the size of lateral exciting and exciting and reverses tangential linear velocity, then change according to correlation formula
Calculate impedance function, obtain virtual time-domain response curve by numerical analysis method further.Excitation method in the method can
An additional horizontal loading can be applied to pile body, interfere to test result, and the method can not weaken or eliminate unidirectional
, there is open defect in the extraneous vibration that the additional power loads such as strong current, wave, tide the cause impact on test result.
Summary of the invention
The technical problems to be solved in the utility model is, for existing pile foundation test method above shortcomings, carries
For a kind of hoop tuype torsional excitation device, additional power load impact on tangential linear velocity is decreased or even eliminated so that go out
Data are more accurate, are conducive to the analysis to pile body performance.
This utility model be the technical scheme is that by the above-mentioned technical problem of solution
A kind of hoop tuype torsional excitation device, at least includes interior hoop, outer hoop, ball, ball spacer ferrule, pile holding bolt
And dowel steel, described ball spacer ferrule is arranged between interior hoop and outer hoop, and the outside of interior hoop is provided with outer slot rolling, outer shroud
The inner side of hoop is provided with interior slot rolling, and described ball is embedded between the outer slot rolling of interior hoop and the interior slot rolling of outer hoop, and by ball
Spacer ferrule positions；Uniformly offering some pile holding bolts hole on described interior hoop, in each pile holding bolt hole, correspondence wears one
Pile holding bolt, pile holding bolt is overall for interior hoop and pile body are fixed as one；Described dowel steel is provided with two, two power transmissions
Bar is symmetrically welded at the outside being perpendicular to interior hoop tangent line, on described outer hoop symmetry offer two level with dowel steel
Dowel steel location hole, two dowel steels stretch out respectively from the two of outer hoop dowel steel location holes.
By such scheme, described interior hoop by two symmetrical in half circular boop form, each in half circular boop two ends respectively
Be provided perpendicular to the interior hoop wing plate of its end, reserved on interior hoop wing plate in hoop bolt hole, in two the two of half circular boop
Hold to connect in being located in interior hoop bolt hole by assembling bolt and fix.
By such scheme, described outer hoop is made up of two symmetrical outer half circular boops, and the two ends of each outer half circular boop are respectively
It is provided perpendicular to the outer hoop wing plate of its end, reserved outer hoop bolt hole, the two of two outer half circular boops on outer hoop wing plate
Hold to connect in being located in outer hoop bolt hole by assembling bolt and fix.
By such scheme, described pile holding bolt hole is provided with 4, adjacent two pile holding bolts hole each other 90 ° be reserved in internal ring
On hoop (pile holding bolt hole can also change quantity and angle according to actual needs).
This utility model hoop tuype torsional excitation measurement device stake parameter also solves the side of respective virtual time-domain response curve
Method, comprises the following steps:
1) the hoop tuype torsional excitation device of suitable size is selected according to the shape of stake, hoop tuype torsional excitation device interior
The diameter of hoop is slightly larger than maximum diagonal length or the diameter of stake, in order to fixing of pile holding bolt；
2) the hoop tuype torsional excitation device assembled is inserted at the pile body away from pile crown correct position, tightens pile holding bolt
Interior hoop and pile body are fixed as one overall；
3) at the correct position of interior hoop, it is symmetrically installed velocity sensor, and ensures the line side of symmetrical velocity sensor
To vertical with water (flow) direction；Two dowel steels are respectively mounted a force cell；And by velocity sensor and force-measuring sensing
Device is connected to test on main frame；
4) during exciting, the dowel steel position making outer hoop rotate by the outer hoop wing plate of quick rotation and passing through on outer hoop
Dowel steel is clashed in hole, and then internally hoop applies moment of torsion and is transferred to pile body；
5) measured by force cell and velocity sensor respectively during exciting act on symmetry two power transmissions
Load on bar and two tangential linear velocities of interior hoop；
6) according to step 5) in two tangential linear velocities of interior hoop of being surveyed, if not by strong current, wave, tide
Additional power load action, a pair parameter equal, in opposite direction sized by two the tangential linear velocities now measured, fixed respectively
Justice is V and-V, takes the meansigma methods (| V |+|-V |)/2 of this pair parameter absolute value, i.e. obtains the tangential linear speed of torsion of now pile body
Degree；
7) if by strong current, wave, the additional power load action of tide, that now measures is consistent with water (flow) direction
Tangential linear velocity V1Size is that tangential linear velocity absolute value | the V | not affected by additional power load draws with by additional power load
The tangential linear velocity absolute value risen | Vf| sum, i.e. | V |+| Vf|；Tangential linear velocity V contrary with water (flow) direction2Size is not for be subject to
Tangential linear velocity absolute value | V | of additional power load impact and the tangential linear velocity absolute value caused by additional power load |
Vf| difference, i.e. | V |-| Vf|, take tangential linear velocity V1With V2The meansigma methods of absolute value (| V1|+|-V2|)/2), i.e. it is eliminated attached
Add the tangential linear velocity of torsion of pile body after dynamic load impact；
8) integrating step 5) in the load conversion measured obtain the moment of torsion that acts on pile body, and integrating step 6)～7) in
The tangential linear velocity of torsion of the pile body obtained, converses corresponding not by strong current, wave, the additional power load action of tide
With by strong current, wave, the impedance function of additional power load action of tide, and then obtained accordingly by numerical analysis method
Virtual time-domain response curve.
The beneficial effects of the utility model:
1, this utility model device can weaken or eliminate the additional power loads such as unidirectional strong current, wave, tide and causes
The extraneous vibration impact on test result, added load and after eliminating the impact of additional power load on accurately measure device
Pile body during exciting reverses tangential linear velocity；
2, this utility model device will not apply an additional horizontal loading to pile body, passes through surveyed load and converses work
The moment of torsion being used on pile body, reverses tangential linear velocity in conjunction with the moment of torsion obtained and the pile body after eliminating the effects of the act and obtains corresponding impedance
Function, and then obtain the most virtual time-domain response curve by numerical analysis method；
3, additional power load impact on tangential linear velocity is decreased or even eliminated so that the data gone out are more accurate, have
It is beneficial to the analysis to pile body performance, installs simple and convenient, easily operate, with low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model hoop tuype torsional excitation device；
Fig. 2 be Fig. 1 along A-A to structural representation；
Fig. 3 be Fig. 1 along B-B to structural representation；
Fig. 4 be Fig. 1 along C-C to structural representation；
Fig. 5 be Fig. 1 along D-D to structural representation；
In figure: hoop in 1-, the outer hoop of 2-, 3-ball, 4-ball spacer ferrule, 5-assembles bolt, and 6-pile holding bolt, in 7-
Half circular boop, hoop wing plate in 8-, hoop bolt hole in 9-, 10-outer half circular boop, the outer hoop wing plate of 11-, the outer hoop bolt hole of 12-,
The outer slot rolling of 13-, slot rolling in 14-, 15-pile holding bolt hole, 16-dowel steel, 17-dowel steel location hole.
Detailed description of the invention
Technical solutions of the utility model are described in detail by below in conjunction with the accompanying drawings with one preferred embodiment.
With reference to shown in Fig. 1～Fig. 5, hoop tuype torsional excitation device described in the utility model, at least include interior hoop 1,
Outer hoop 2, ball 3, ball spacer ferrule 4, pile holding bolt 6 and dowel steel 16, ball spacer ferrule 4 is arranged at interior hoop 1 and outer shroud
Between hoop 2, the outside of interior hoop 1 is provided with outer slot rolling 13, and the inner side of outer hoop 2 is provided with interior slot rolling 14, and ball 3 is embedded in internal ring
Between outer slot rolling 13 and the interior slot rolling 14 of outer hoop 2 of hoop 1, and positioned by ball spacer ferrule 4；Uniformly offer on interior hoop 1
Some pile holding bolts hole 15, in each pile holding bolt hole 15, correspondence wears a pile holding bolt 6, and pile holding bolt 6 is for by internal ring
It is overall that hoop 1 and pile body are fixed as one；Dowel steel 16 is provided with two, and two dowel steels 16 are symmetrically welded at and are perpendicular to interior hoop 1
The outside of tangent line, on outer hoop 2, symmetry offers two and dowel steel 16 level dowel steel location hole 17, two dowel steels
16 stretch out respectively from two dowel steel location holes 17 of outer hoop 2.
Interior hoop 1 by two symmetrical in half circular boop 7 form, each in the two ends of half circular boop 7 be respectively arranged with and be perpendicular to
The interior hoop wing plate 8 of its end, reserved interior hoop bolt hole 9 on interior hoop wing plate 8, in two, the two ends of half circular boop 7 are by dress
Join in bolt 5 is located in interior hoop bolt hole 9 to connect and fix.
Outer hoop 2 is made up of two symmetrical outer half circular boops 10, and the two ends of each outer half circular boop 10 are respectively arranged with vertically
In the outer hoop wing plate 11 of its end, reserved outer hoop bolt hole 12, the two ends of two outer half circular boops 10 on outer hoop wing plate 11
Connect fixing in being located in outer hoop bolt hole 12 by assembling bolt 5.
Pile holding bolt hole 15 is provided with 4, adjacent two pile holding bolts hole 15 each other 90 ° be reserved on interior hoop 1, pile holding spiral shell
Keyhole can also change quantity and angle according to actual needs.
This utility model hoop tuype torsional excitation measurement device stake parameter also solves the side of respective virtual time-domain response curve
Method, comprises the following steps:
1) shape according to stake selects the hoop tuype torsional excitation device of suitable size, and embodiment king-pile is circular stake or side
Shape stake, the diameter of the interior hoop 1 of hoop tuype torsional excitation device is slightly larger than diameter or the maximum diagonal of barrette of circular stake
Length, in order to fixing of pile holding bolt 6；
2) the hoop tuype torsional excitation device assembled is inserted at the pile body away from pile crown correct position, tightens pile holding bolt
6 that interior hoop 1 and pile body are fixed as one is overall；
3) at the correct position of interior hoop 1, it is symmetrically installed velocity sensor, and ensures the line of symmetrical velocity sensor
Direction is vertical with water (flow) direction；Two dowel steels 16 are respectively mounted a force cell；And by velocity sensor and dynamometry
Sensor is connected to test on main frame；
4), during exciting, make outer hoop 2 rotate by the outer hoop wing plate 11 of quick rotation and pass through the dowel steel on outer hoop 2
Location hole 17 clashes into dowel steel 16, and then internally hoop 1 applies moment of torsion and is transferred to pile body；
5) measured by force cell and velocity sensor respectively during exciting act on symmetry two power transmissions
Load on bar 16 and two tangential linear velocities of interior hoop 1；
6) according to step 5) in two tangential linear velocities of interior hoop 1 of being surveyed, if not by strong current, wave, tide
Additional power load action, a pair parameter equal, in opposite direction sized by two the tangential linear velocities now measured, respectively
It is defined as V and-V, takes the meansigma methods (| V |+|-V |)/2 of this pair parameter absolute value, i.e. obtain the tangential line of torsion of now pile body
Speed；
7) if by strong current, wave, the additional power load action of tide, that now measures is consistent with water (flow) direction
Tangential linear velocity V1Size is that tangential linear velocity absolute value | the V | not affected by additional power load draws with by additional power load
The tangential linear velocity absolute value risen | Vf| sum, i.e. | V |+| Vf|；Tangential linear velocity V contrary with water (flow) direction2Size is not for be subject to
Tangential linear velocity absolute value | V | of additional power load impact and the tangential linear velocity absolute value caused by additional power load |
Vf| difference, i.e. | V |-| Vf|, take tangential linear velocity V1With V2The meansigma methods of absolute value (| V1|+|-V2|)/2), i.e. it is eliminated attached
Add the tangential linear velocity of torsion of pile body after dynamic load impact；
8) integrating step 5) in the load conversion measured obtain the moment of torsion that acts on pile body, and integrating step 6)～7) in
The tangential linear velocity of torsion of the pile body obtained, converses corresponding not by strong current, wave, the additional power load action of tide
With by strong current, wave, the impedance function of additional power load action of tide, and then obtained accordingly by numerical analysis method
Virtual time-domain response curve.
Obviously, above-described embodiment is only for clearly demonstrating this utility model example, and is not to this reality
Restriction with novel embodiment.For those of ordinary skill in the field, drawn according to spirit of the present utility model
Within the obvious change stretched out or variation are still in protection domain of the present utility model.
Claims (4)
1. a hoop tuype torsional excitation device, it is characterised in that: at least include interior hoop (1), outer hoop (2), ball (3),
Ball spacer ferrule (4), pile holding bolt (6) and dowel steel (16), described ball spacer ferrule (4) is arranged at interior hoop (1) and outer shroud
Between hoop (2), the outside of interior hoop (1) is provided with outer slot rolling (13), and the inner side of outer hoop (2) is provided with interior slot rolling (14), institute
State ball (3) to be embedded between the outer slot rolling (13) of interior hoop (1) and the interior slot rolling (14) of outer hoop (2), and by ball spacer ferrule
(4) location；Some pile holding bolts hole (15) are uniformly offered on described interior hoop (1), corresponding in each pile holding bolt hole (15)
Wearing a pile holding bolt (6), pile holding bolt (6) is overall for interior hoop (1) and pile body are fixed as one；Described dowel steel
(16) being provided with two, two dowel steels (16) are symmetrically welded at the outside being perpendicular to interior hoop (1) tangent line, described outer hoop
(2) upper symmetry offer two with dowel steel (16) level dowel steel location hole (17), two dowel steels (16) respectively from
Two dowel steel location holes (17) of outer hoop (2) are stretched out.
Hoop tuype torsional excitation device the most according to claim 1, it is characterised in that: described interior hoop (1) is right by two
Interior half circular boop (7) composition claimed, the two ends of each interior half circular boop (7) are respectively arranged with the interior hoop wing plate being perpendicular to its end
(8), the upper reserved interior hoop bolt hole (9) of interior hoop wing plate (8), in two, the two ends of half circular boop (7) are worn by assembling bolt (5)
Connect fixing in being located at interior hoop bolt hole (9).
Hoop tuype torsional excitation device the most according to claim 1, it is characterised in that: described outer hoop (2) is right by two
Outer half circular boop (10) composition claimed, the two ends of each outer half circular boop (10) are respectively arranged with the outer hoop wing plate being perpendicular to its end
(11), the upper reserved outer hoop bolt hole (12) of outer hoop wing plate (11), the two ends of two outer half circular boops (10) are by assembling bolt
(5) connect fixing in being located in outer hoop bolt hole (12).
Hoop tuype torsional excitation device the most according to claim 1, it is characterised in that: described pile holding bolt hole (15) is provided with
4, adjacent two pile holding bolts hole (15) each other 90 ° be reserved on interior hoop (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620674965.3U CN205742303U (en) | 2016-06-29 | 2016-06-29 | A kind of hoop tuype torsional excitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620674965.3U CN205742303U (en) | 2016-06-29 | 2016-06-29 | A kind of hoop tuype torsional excitation device |
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| Publication Number | Publication Date |
|---|---|
| CN205742303U true CN205742303U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620674965.3U Withdrawn - After Issue CN205742303U (en) | 2016-06-29 | 2016-06-29 | A kind of hoop tuype torsional excitation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951898A (en) * | 2016-06-29 | 2016-09-21 | 中国地质大学（武汉） | Hoop type torsional excitation device and method for measuring pile parameters and solving corresponding virtual time-domain response curve through hoop type torsional excitation device |
| CN110774461A (en) * | 2019-09-20 | 2020-02-11 | 韩清红 | Pile head cutting device |
-
2016
- 2016-06-29 CN CN201620674965.3U patent/CN205742303U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951898A (en) * | 2016-06-29 | 2016-09-21 | 中国地质大学（武汉） | Hoop type torsional excitation device and method for measuring pile parameters and solving corresponding virtual time-domain response curve through hoop type torsional excitation device |
| CN110774461A (en) * | 2019-09-20 | 2020-02-11 | 韩清红 | Pile head cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20171024 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20171024 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |