CN202430752U - Cast-in-place pile steel bar cage length detection device based on electromagnetic field intensity test - Google Patents
Cast-in-place pile steel bar cage length detection device based on electromagnetic field intensity test Download PDFInfo
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- CN202430752U CN202430752U CN2011204583896U CN201120458389U CN202430752U CN 202430752 U CN202430752 U CN 202430752U CN 2011204583896 U CN2011204583896 U CN 2011204583896U CN 201120458389 U CN201120458389 U CN 201120458389U CN 202430752 U CN202430752 U CN 202430752U
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- electromagnetic field
- field intensity
- inverter circuit
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- bar cage
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- 230000005672 electromagnetic field Effects 0.000 title claims abstract description 78
- 238000001514 detection method Methods 0.000 title abstract description 7
- 229910000831 Steel Inorganic materials 0.000 title abstract 7
- 239000010959 steel Substances 0.000 title abstract 7
- 239000000523 sample Substances 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 230000001939 inductive effect Effects 0.000 claims description 15
- 230000002787 reinforcement Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model relates to a cast-in-place pile steel bar cage length detection device based on an electromagnetic field intensity test. The cast-in-place pile steel bar cage length detection device comprises a direct current power supply, an inverter circuit, a moving electrode, an electromagnetic field intensity analysis instrument and an electromagnetic field intensity sensing probe, wherein the inverter circuit is used for converting low-voltage direct current into high-voltage high-frequency alternating current, the moving electrode is connected with one output end of the inverter circuit through a conducting wire, the electromagnetic field intensity analysis instrument is used for analyzing the electromagnetic field intensity, the electromagnetic field intensity sensing probe is used for sensing the electromagnetic field intensity and is connected with the electromagnetic field intensity analysis instrument through a signal wire, the other output end of the inverter circuit is connected with the outward exposed part of a steel bar cage to be detected exposed on the ground, an electromagnetic field is formed between the steel bar cage and the moving electrode, and the electromagnetic field intensity sensing probe is arranged in the electromagnetic field. The cast-in-place pile steel bar cage length detection device has the advantages that the length of the cast-in-place pile steel bar cage can be simply and reliably measured, the operation is simple, and the detection cost is low.
Description
Technical field
The utility model relates to the building foundation checkout gear, particularly a kind of filling pile cage of reinforcement device for detecting length based on the electromagnetic field intensity test.
Background technology
Castinplace pile has advantages such as bearing capacity height, construction technology are simple, is widely used in the basis of industry and civil building.Because concealed work under the castinplace pile possession, unit in charge of construction's phenomenon of using inferior materials and turning out substandard goods happens occasionally, and particularly the length of reinforcing cage situation that can not meet design requirement frequently takes place especially, and this has constituted the hidden danger of building.
Up to now, also there are the part experts and scholars to attempt studying, explore the method that detects length of reinforcing cage both at home and abroad, comprise: magnetic gradient method, boring electromagnetic wave method, stress pulse ripple method and electric potential gradient method etc.But owing to receive the restriction of method and technology and instrument itself, existing method can't solve the detection problem of length of reinforcing cage at present well, in engineering, does not gain universal acceptance as yet and extensive use.
The utility model content
For overcoming the shortcoming that prior art can't detect length of reinforcing cage, the utility model provides a kind of checkout gear of measurement filling pile cage of reinforcement length of simple possible.
Filling pile cage of reinforcement device for detecting length based on the electromagnetic field intensity test; It is characterized in that: comprise dc source; Low-voltage DC is changed into the inverter circuit of high voltagehigh frequency alternating current; The traveling electrode that is connected with one of them output of inverter circuit through lead and the electromagnetic field intensity analyzer of analysis of Electromagnetic intensity, and the electromagnetic field intensity inductive probe of responding to residing electromagnetic field intensity; The electromagnetic field intensity inductive probe is connected with the electromagnetic field intensity analyzer through holding wire;
Another output of inverter circuit is connected with the portion of exposing that is exposed to ground of reinforcing cage to be measured, forms electromagnetic field between reinforcing cage and the traveling electrode, and the electromagnetic field intensity inductive probe places this electromagnetic field.
Further, connect inverter circuit and be wrapped in the same screen layer with the holding wire that is connected electromagnetic field intensity analyzer and electromagnetic field intensity probe with the lead of traveling electrode, lead, holding wire and screen layer form a shielding line.
Further, described traveling electrode and electromagnetic field intensity inductive probe place an insulated enclosure waterproof case, and described shielding line penetrates in this insulated enclosure waterproof case.
The technical conceive of the utility model is: convert low-voltage DC into the high voltagehigh frequency alternating current through inverter circuit, and this high voltagehigh frequency alternating current is loaded on traveling electrode and the reinforcing cage, make between traveling electrode and the reinforcing cage and form electromagnetic field.Again traveling electrode and electromagnetic field intensity probe are integrated.
When measuring; Outside reinforcing cage to be measured, play a boring that is parallel to reinforcing cage to be measured; Again traveling electrode that integrates and electromagnetic field intensity probe are put into boring to let live the mode of transferring by fixed range at the uniform velocity down; Record the electromagnetic field intensity value through the electromagnetic field intensity inductive probe, and with handling in this electromagnetic field intensity value input electromagnetic field analysis appearance, thereby electromagnetic field intensity change curve obtained along the drilling depth direction.
When traveling electrode is crossed interface, reinforcing cage ground; Magnetic field intensity between traveling electrode and the reinforcing cage will produce sudden change; This sudden change shows and occurs curve upward peak or flex point in the electromagnetic field intensity change curve; Even the pairing degree of depth in interface, degree of depth reinforcing cage ground that this curve upward peak or flex point are corresponding, this depth value is the length of reinforcing cage.
The utility model detects length of reinforcing cage through test charging reinforcing cage formed electromagnetic field intensity around castinplace pile, and clear principle is reliable.This method adopts comparatively simple tester just can realize, so be convenient to promote the use of.Simultaneously, only need to drill through a hole at stake Zhou Tuzhong, it is low to detect cost.Need not loaded down with trivial details data, method is intuitively simple.
The utlity model has can be simple and reliable measurement filling pile cage of reinforcement length, simple to operate, detect the low advantage of cost.
Description of drawings
Fig. 1 is the sketch map of the utility model.
The specific embodiment
With reference to accompanying drawing, further specify the utility model:
Filling pile cage of reinforcement device for detecting length based on the electromagnetic field intensity test; Comprise dc source 1; Low-voltage DC is changed into the inverter circuit 2 of high voltagehigh frequency alternating current; The traveling electrode 8 that is connected with one of them output of inverter circuit 2 through lead 13 and the electromagnetic field intensity analyzer 6 of analysis of Electromagnetic intensity, and the electromagnetic field intensity inductive probe 7 of responding to residing electromagnetic field intensity; Electromagnetic field intensity inductive probe 7 is connected with electromagnetic field intensity analyzer 6 through holding wire 11;
Another output of inverter circuit 2 is connected with the portion of exposing that is exposed to ground of reinforcing cage 5 to be measured, forms electromagnetic field between reinforcing cage 5 and the traveling electrode 8, and electromagnetic field intensity inductive probe 7 places this electromagnetic field.
Connect inverter circuit 2 and be wrapped in the same screen layer with the holding wire 11 that is connected electromagnetic field intensity analyzer 6 and electromagnetic field intensity probe 7 with the lead 13 of traveling electrode 8, lead 13, holding wire 11 and screen layer form a shielding line 12.
Described traveling electrode 8 places an insulated enclosure waterproof case 9 with electromagnetic field intensity inductive probe 7, and described shielding line 12 penetrates in this insulated enclosure waterproof case 9.
The technical conceive of present embodiment is: convert low-voltage DC into the high voltagehigh frequency alternating current through inverter circuit 2, and this high voltagehigh frequency alternating current is loaded on traveling electrode 8 and the reinforcing cage 5, make between traveling electrode 8 and the reinforcing cage 5 and form electromagnetic field.As shown in Figure 1; The positive pole of dc source 1 is connected with you the electrode input end A on power transformation road; The negative pole of dc source 1 is connected with you the negative input B on power transformation road, and the output C of inverter circuit is connected with reinforcing cage 5, and the output D of inverter circuit is connected with traveling electrode 8.
Again traveling electrode 8 and electromagnetic field intensity probe 7 are integrated.
When measuring; Outside reinforcing cage 5 to be measured, play a boring 3 that is parallel to reinforcing cage to be measured; Again traveling electrode that integrates 8 and electromagnetic field intensity probe 7 are put into boring 3 to let live the mode of transferring by unit distance at the uniform velocity down; Record the electromagnetic field intensity value through electromagnetic field intensity inductive probe 7, and with handling in this electromagnetic field intensity value input electromagnetic field analysis appearance 6, thereby electromagnetic field intensity change curve obtained along the drilling depth direction.
If adopt the mode of at the uniform velocity transferring, as long as control lowering velocity well, just can obtain the electromagnetic field intensity change curve easily; If adopt the mode of transferring by fixed range; Just can only obtain (1 ... N) the electromagnetic field intensity value (N is for transferring number of times) of the pairing N of * unit distance discrete depth location; Also need the electromagnetic field analysis appearance that the electromagnetic field intensity value of these depth locations is carried out match, could obtain the electromagnetic field intensity change curve.
When traveling electrode 8 is crossed interface, reinforcing cage ground; Magnetic field intensity between traveling electrode 8 and the reinforcing cage 5 will produce sudden change; This sudden change shows and occurs curve upward peak or flex point in the electromagnetic field intensity change curve; Even the pairing degree of depth in interface, degree of depth reinforcing cage ground that this curve upward peak or flex point are corresponding, this depth value is the length of reinforcing cage 5.
The battery of 12V is adopted in suggestion in the present embodiment, after the inverter circuit effect, can be changed into the high voltagehigh frequency alternating current.During detection; The limit, the village of hole spacing castinplace pile generally is not more than 1 meter; Long 3 ~ 5 meters of the hole depth rate design length of reinforcing cage of boring; The bore diameter suggestion is 100mm, and in boring, puts down a guard tube that the bore of coming on stage is adaptive, and is impaired to prevent insulated enclosure waterproof case, traveling electrode and electromagnetic field intensity inductive probe.
Present embodiment detects length of reinforcing cage through test charging reinforcing cage formed electromagnetic field intensity around castinplace pile, and clear principle is reliable.This method adopts comparatively simple tester just can realize, so be convenient to promote the use of.Simultaneously, only need to drill through a hole at stake Zhou Tuzhong, it is low to detect cost.Need not loaded down with trivial details data, method is intuitively simple.
The utlity model has can be simple and reliable measurement filling pile cage of reinforcement length, simple to operate, detect the low advantage of cost.
The described content of this manual embodiment only is enumerating the way of realization of utility model design; The protection domain of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (3)
1. the filling pile cage of reinforcement device for detecting length of testing based on electromagnetic field intensity; It is characterized in that: comprise dc source; Low-voltage DC is changed into the inverter circuit of high voltagehigh frequency alternating current; The traveling electrode that is connected with one of them output of inverter circuit through lead and the electromagnetic field intensity analyzer of analysis of Electromagnetic intensity, and the electromagnetic field intensity inductive probe of responding to residing electromagnetic field intensity; The electromagnetic field intensity inductive probe is connected with the electromagnetic field intensity analyzer through holding wire;
Another output of inverter circuit is connected with the portion of exposing that is exposed to ground of reinforcing cage to be measured, forms electromagnetic field between reinforcing cage and the traveling electrode, and the electromagnetic field intensity inductive probe places this electromagnetic field.
2. the filling pile cage of reinforcement device for detecting length based on the electromagnetic field intensity test as claimed in claim 1; It is characterized in that: connect inverter circuit and be wrapped in the same screen layer with the holding wire that is connected electromagnetic field intensity analyzer and electromagnetic field intensity probe with the lead of traveling electrode, lead, holding wire and screen layer form a shielding line.
3. the filling pile cage of reinforcement device for detecting length based on the electromagnetic field intensity test as claimed in claim 2; It is characterized in that: described traveling electrode and electromagnetic field intensity inductive probe place an insulated enclosure waterproof case, and described shielding line penetrates in this insulated enclosure waterproof case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204583896U CN202430752U (en) | 2011-11-17 | 2011-11-17 | Cast-in-place pile steel bar cage length detection device based on electromagnetic field intensity test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204583896U CN202430752U (en) | 2011-11-17 | 2011-11-17 | Cast-in-place pile steel bar cage length detection device based on electromagnetic field intensity test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202430752U true CN202430752U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204583896U Expired - Fee Related CN202430752U (en) | 2011-11-17 | 2011-11-17 | Cast-in-place pile steel bar cage length detection device based on electromagnetic field intensity test |
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| Country | Link |
|---|---|
| CN (1) | CN202430752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193136A (en) * | 2016-07-25 | 2016-12-07 | 上海宝冶集团有限公司 | Detection method based on electromagnetic field intensity test site filling pile cage of reinforcement length |
| CN111021435A (en) * | 2019-12-23 | 2020-04-17 | 江苏亚道建设工程检测有限公司 | Method for detecting length of reinforcement cage in concrete cast-in-place pile by using magnetic logging method |
-
2011
- 2011-11-17 CN CN2011204583896U patent/CN202430752U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193136A (en) * | 2016-07-25 | 2016-12-07 | 上海宝冶集团有限公司 | Detection method based on electromagnetic field intensity test site filling pile cage of reinforcement length |
| CN111021435A (en) * | 2019-12-23 | 2020-04-17 | 江苏亚道建设工程检测有限公司 | Method for detecting length of reinforcement cage in concrete cast-in-place pile by using magnetic logging method |
| CN111021435B (en) * | 2019-12-23 | 2021-03-26 | 江苏亚道建设工程检测有限公司 | Method for detecting length of reinforcement cage in concrete cast-in-place pile by using magnetic logging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20131117 |