CN106948387A - Method and device for detecting length of operated bridge pile foundation - Google Patents
Method and device for detecting length of operated bridge pile foundation Download PDFInfo
- Publication number
- CN106948387A CN106948387A CN201710250264.6A CN201710250264A CN106948387A CN 106948387 A CN106948387 A CN 106948387A CN 201710250264 A CN201710250264 A CN 201710250264A CN 106948387 A CN106948387 A CN 106948387A
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- China
- Prior art keywords
- pile foundation
- transmitting probe
- receiving transducer
- winch
- detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 239000011435 rock Substances 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 238000007405 data analysis Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000003862 health status Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000002706 plastid Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method and a device for detecting the length of a running bridge pile foundation, wherein a detection hole is respectively drilled at two sides of the running bridge pile foundation; then, the transmitting probes are respectively placed into the two detection holes through cables, and the placing depths of the transmitting probes and the receiving probes are the same; a winch is arranged on the hole opening of each detection hole, a cable is wound on the winch, and the other end of the cable is connected with the host; the two winches synchronously operate to ensure that the transmitting probe and the receiving probe are always positioned at the same height; when the host, the transmitting probe and the receiving probe are confirmed to work normally, the transmitting probe and the receiving probe synchronously move downwards, and data acquisition and storage are carried out once each step length is moved; and analyzing the data acquired by each step length to detect the operated bridge pile foundation and bedrocks below the pile foundation. The invention provides important data for comprehensively, objectively and reliably evaluating the health condition of the operated bridge pile foundation, and ensures the safety of bridges, vehicles and personnel.
Description
Technical field
The present invention relates to a kind of method and device for having run bridge pile foundation length detection, belong to the detection skill of bridge pile foundation
Art field.
Background technology
, need to be to the Bridge Pile that has run if the data loss or with suspicion to the accuracy of raw data after bridge is built up
Base length is checked, judges stake base rock with the presence or absence of unfavorable geologic bodies such as karst, the crushed zones of influence abutment bearing capacity.Tradition inspection
Peg length and judge that the low strain dynamic method of integrality is covered by other component things by pile crown and be difficult to carry out, if enterprising in bridge floor
Row boring and coring judges, then influences the normal vehicle pass-through of bridge floor, and to bridge floor and stake have destruction.
The content of the invention
It is an object of the present invention to provide a kind of method and device for having run bridge pile foundation length detection, to ensure energy dissipating platform
Rank security and efficiency effect, while there is good economy and applicability, so as to overcome the deficiencies in the prior art.
The technical proposal of the invention is realized in this way：
A kind of method for having run bridge pile foundation length detection of the present invention is that this method is to run bridge pile foundation both sides point
Not Zuan a detection hole, the depth in detection hole is more than the depth for having run bridge pile foundation and to extend to the basement rock below pile foundation deep
Degree；Then transmitting probe is put into one of detection hole by cable, receiving transducer is put into another by cable examines
In gaging hole, transmitting probe and receiving transducer to be put into depth identical；The aperture in each detection hole is equipped with winch, and cable is wrapped in
On winch, the cable other end is connected with main frame；Two winch synchronous operations, to ensure that transmitting probe and receiving transducer are always positioned at
Sustained height；After main frame, transmitting probe and receiving transducer working properly is confirmed, make transmitting probe, receiving transducer synchronous downwards
It is mobile, often move a step-length and carry out a data acquisition and preserve；Data are carried out by the data collected to each step-length
Analysis, karst, crushed zone for influenceing abutment bearing capacity etc. are whether there is on pile foundation length and the following basement rock of pile foundation no to realize
Good geologic body.
In preceding method, the spacing between described two detection holes is 5-10 meters.
In preceding method, the length of the step-length is not more than 1 meter.
In preceding method, the main frame uses Electromagnetic CT.
In preceding method, the object of the data analysis is electromagnetic wave attenuation coefficient；When transmitting probe and receiving transducer are high
When degree is in the range of pile foundation, electromagnetic wave attenuation coefficient is between 90-130dB.
In preceding method, the object of the data analysis is electromagnetic wave attenuation coefficient；When transmitting probe and receiving transducer are high
When degree is in the range of basement rock, electromagnetic wave attenuation coefficient is between 90-60dB；According to transmitting probe and receiving transducer in basement rock scope
The difference of interior electromagnetic wave attenuation coefficient determines the integrality of basement rock.
According to the above method constitute it is of the invention it is a kind of run bridge pile foundation length detection device be, the device bag
Include positioned at two detection holes for having run bridge pile foundation both sides, the depth in detection hole is more than the depth for having run bridge pile foundation and prolonged
Extend the basement rock depth below pile foundation；Transmitting probe is provided with one of detection hole, is provided with to receive in another detection hole and visits
Head, transmitting probe and receiving transducer are located at identical height；Winch is respectively equipped with the aperture in two detection holes, transmitting probe and is connect
Receive probe to be connected with cable one end respectively, cable is wrapped in the other end on winch and is connected with main frame.
In aforementioned means, the winch at the aperture in two detection holes is the synchronous winch of linkage.
By adopting the above-described technical solution, the present invention is compared with prior art, the present invention comments to be comprehensive, objective, reliable
The health status that valency has run bridge pile foundation provides important data, it is ensured that bridge, vehicle and the safety of personnel, with very strong
Economic worth and social value.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Marked in figure：1- transmitting probes, 2- receiving transducers, 3- detections hole, 4- basement rock, 5- have run bridge pile foundation, 6-
Winch, 7- cables, 8- main frames.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but not as to any of the present invention
Limitation.
A kind of method for having run bridge pile foundation length detection of the present invention, as shown in figure 1, this method is to run bridge
A detection hole is bored in pile foundation both sides respectively, and the depth in detection hole is more than the depth for having run bridge pile foundation and extended to below pile foundation
Basement rock depth；Then transmitting probe is put into one of detection hole by cable, be put into receiving transducer by cable
In another detection hole, transmitting probe and receiving transducer to be put into depth identical；The aperture in each detection hole is equipped with winch, electricity
Cable is wrapped on winch, and the cable other end is connected with main frame；Two winch synchronous operations, to ensure transmitting probe and receiving transducer
It is always positioned at sustained height；When confirming main frame, transmitting probe and after receiving transducer working properly, transmitting probe, receiving transducer are allowed
Synchronously move down, often move a step-length and carry out a data acquisition and preserve；Pass through the data collected to each step-length
Data analysis is carried out, to realize the karst, broken on pile foundation length and the following basement rock of pile foundation with the presence or absence of influence abutment bearing capacity
The unfavorable geologic bodies such as broken band；Spacing between two detection holes is 5-10 meters；The length of step-length is not more than 1 meter；Main frame is using electricity
Magnetic wave CT；The object of data analysis is electromagnetic wave attenuation coefficient；When transmitting probe and receiving transducer height are in the range of pile foundation,
Electromagnetic wave attenuation coefficient is between 90-130dB；The object of data analysis is electromagnetic wave attenuation coefficient；When transmitting probe and reception
When probe height is in the range of basement rock, electromagnetic wave attenuation coefficient is between 90-60dB；According to transmitting probe and receiving transducer in base
The difference of electromagnetic wave attenuation coefficient determines the integrality of basement rock in the range of rock.
A kind of device for having run bridge pile foundation length detection of the invention constituted according to the above method, as shown in figure 1,
The device includes being located at two detection holes 3 for having run the both sides of bridge pile foundation 5, and the depth in detection hole 3, which is more than, has run Bridge Pile
The depth of base 5 and the depth of basement rock 4 extended to below pile foundation；Transmitting probe 1 is provided with one of detection hole 3, another inspection
Receiving transducer 2 is provided with gaging hole 3, transmitting probe 1 and receiving transducer 2 are located at identical height；Distinguish at the aperture in two detection holes 3
Provided with winch 6, transmitting probe 1 and receiving transducer 2 are connected with the one end of cable 7 respectively, cable 7 be wrapped on winch 6 other end with
Main frame 8 is connected；Winch 6 at the aperture in two detection holes 3 is the synchronous winch of linkage.
Embodiment
This example is as shown in Figure 1.Specific implementation step is as follows：
1）, in the 2 detection drillings 3 of detected two sidetracking of bridge pile foundation, it is ensured that the lines of 2 drilling pass through pile foundation, 2 exploration holes
Spacing is preferably 5-10m or so；
2）, the transmitting probe 1 and receiving transducer 2 of Electromagnetic CT are individually placed to two 3 apertures of detection drilling, transmitting probe 2
Line is connected with winch, and receiving transducer 3 connects with winch, main frame；
3）, main frame and after checking that main frame, transmitting probe 2, receiving transducer 3 are normal, make transmitting probe 2, receiving transducer 3 synchronous past
Lower movement, often moves a step-length（Such as 0.2m, 0.5m or 1.0m）A data acquisition is carried out, and is preserved；
4）, influenceed by reinforcing bar in pile body or shallow earth's surface soil, in abutment pile body length range, what receiving transducer 3 was received
Electromagnetic wave attenuation coefficient is high level（Typically between 90-130dB）；
5）, when transmitting probe 2, receiving transducer 3 enter basement rock after, the electromagnetic wave attenuation coefficient that its receiving transducer 3 is received is firm
It is obviously reduced（Typically between 30-60dB）；
6）If, probe enter complete basement rock after, the electromagnetic wave attenuation coefficient value that receiving transducer 3 is received is basically unchanged or changed not
Greatly, then illustrate that stake bed rock body is complete, if local value is uprised, illustrate that stake bottom bottom rock mass has karst or rock crushing etc. poorly
Development of plastid.
The present invention is can finding so far, unique, reliable to having run bridge pile foundation length is detected one
Plant method and apparatus；The present invention is also can finding so far, unique, reliable to having run the following rock mass in bridge pile foundation bottom
A kind of method and apparatus that integrality is detected；It is that comprehensive, objective, reliable evaluate has been run by the detection of above-mentioned two
The health status of bridge pile foundation provides important data, it is ensured that bridge, vehicle and the safety of personnel, with very strong economic valency
Value and social value.
The operation principle of the present invention
The present invention has very strong attenuation using the reinforcing bar in bridge pile foundation to electromagnetic wave, meanwhile, the steel in bridge pile foundation
The length of muscle is consistent typically with bridge pile foundation depth, therefore judges accurate to the reinforcing bar length in bridge pile foundation, is also corresponded to
The length of bridge pile foundation also accuracy of judgement.The present invention is detected also with karst to bridge pile foundation bottom Rock Mass Integrality, broken
The unfavorable geologic bodies such as broken band are different to electromagnetic wave attenuation coefficient from complete basement rock, when not running into the unfavorable geologies such as karst, crushed zone
During body, the electromagnetic wave signal received by receiving transducer 3 is relatively strong and uniform, if running into the unfavorable geologic bodies such as karst, crushed zone
When, then the weaker and adjacent point of the electromagnetic wave signal received by receiving transducer 3 is changed greatly.
Claims (8)
1. a kind of method for having run bridge pile foundation length detection, it is characterised in that：This method is to run bridge pile foundation two
A detection hole is bored in side respectively, and the depth in detection hole is more than the basement rock for having run the depth of bridge pile foundation and having extended to below pile foundation
Depth；Then transmitting probe is put into one of detection hole by cable, receiving transducer is put into by another by cable
Detect in hole, transmitting probe and receiving transducer to be put into depth identical；The aperture in each detection hole is equipped with winch, cable winding
On winch, the cable other end is connected with main frame；Two winch synchronous operations, to ensure transmitting probe and receiving transducer position all the time
In sustained height；When confirming main frame, transmitting probe and after receiving transducer working properly, make transmitting probe, receiving transducer synchronous to
Lower movement, often moves a step-length and carries out a data acquisition and preserve；By entering line number to the data that each step-length is collected
According to analysis, to realize on pile foundation length and the following basement rock of pile foundation with the presence or absence of karst, crushed zone of influence abutment bearing capacity etc.
Unfavorable geologic body.
2. method according to claim 1, it is characterised in that：Spacing between described two detection holes is 5-10 meters.
3. method according to claim 1, it is characterised in that：The length of the step-length is not more than 1 meter.
4. method according to claim 1, it is characterised in that：The main frame uses Electromagnetic CT.
5. method according to claim 1, it is characterised in that：The object of the data analysis is electromagnetic wave attenuation coefficient；When
When transmitting probe and receiving transducer height are in the range of pile foundation, electromagnetic wave attenuation coefficient is between 90-130dB.
6. method according to claim 1, it is characterised in that：The object of the data analysis is electromagnetic wave attenuation coefficient；When
When transmitting probe and receiving transducer height are in the range of basement rock, electromagnetic wave attenuation coefficient is between 90-60dB；According to transmitting probe
The difference of electromagnetic wave attenuation coefficient determines the integrality of basement rock in the range of basement rock with receiving transducer.
7. a kind of dress for having run bridge pile foundation length detection constituted according to claim 1-6 any claims methods described
Put, it is characterised in that：Including positioned at having run bridge pile foundation（5）Two detection holes of both sides（3）, detect hole（3）Depth it is big
In having run bridge pile foundation（5）Depth and the basement rock that extends to below pile foundation（4）Depth；One of detection hole（3）Inside set
There is transmitting probe（1）, another detection hole（3）It is interior to be provided with receiving transducer（2）, transmitting probe（1）And receiving transducer（2）Positioned at phase
With height；Two detection holes（3）Aperture at be respectively equipped with winch（6）, transmitting probe（1）And receiving transducer（2）Respectively with electricity
Cable（7）One end is connected, cable（7）It is wrapped in winch（6）The upper other end and main frame（8）Connection.
8. device according to claim 7, it is characterised in that：Described two detection holes（3）Aperture at winch（6）For connection
Dynamic synchronization winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250264.6A CN106948387A (en) | 2017-04-17 | 2017-04-17 | Method and device for detecting length of operated bridge pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250264.6A CN106948387A (en) | 2017-04-17 | 2017-04-17 | Method and device for detecting length of operated bridge pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106948387A true CN106948387A (en) | 2017-07-14 |
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ID=59476152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710250264.6A Pending CN106948387A (en) | 2017-04-17 | 2017-04-17 | Method and device for detecting length of operated bridge pile foundation |
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| Country | Link |
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| CN (1) | CN106948387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459403A (en) * | 2022-02-09 | 2022-05-10 | 广东国鸿氢能科技有限公司 | Rapid detection tool and detection method for fuel cell stack |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696686A (en) * | 2005-05-15 | 2005-11-16 | 山东科技大学 | System for testing quality of cast in place concrete pile |
| CN101614022A (en) * | 2009-07-14 | 2009-12-30 | 邓业灿 | Tomography-based method for detecting foundation piles of building by elastics waves |
| CN101614518A (en) * | 2009-06-30 | 2009-12-30 | 江苏方建工程质量鉴定检测有限公司 | Method for measuring length of reinforcing cage of concrete poured pile by potentials |
| CN105089082A (en) * | 2014-05-15 | 2015-11-25 | 交通运输部公路科学研究所 | Single-hole radar in-service bridge pile foundation quality detection method |
| CN105672381A (en) * | 2016-04-12 | 2016-06-15 | 西南石油大学 | Ultrasonic pile bottom sediment thickness detection device and detection method |
| CN206693283U (en) * | 2017-04-17 | 2017-12-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Device for detecting length of operated bridge pile foundation |
-
2017
- 2017-04-17 CN CN201710250264.6A patent/CN106948387A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696686A (en) * | 2005-05-15 | 2005-11-16 | 山东科技大学 | System for testing quality of cast in place concrete pile |
| CN101614518A (en) * | 2009-06-30 | 2009-12-30 | 江苏方建工程质量鉴定检测有限公司 | Method for measuring length of reinforcing cage of concrete poured pile by potentials |
| CN101614022A (en) * | 2009-07-14 | 2009-12-30 | 邓业灿 | Tomography-based method for detecting foundation piles of building by elastics waves |
| CN105089082A (en) * | 2014-05-15 | 2015-11-25 | 交通运输部公路科学研究所 | Single-hole radar in-service bridge pile foundation quality detection method |
| CN105672381A (en) * | 2016-04-12 | 2016-06-15 | 西南石油大学 | Ultrasonic pile bottom sediment thickness detection device and detection method |
| CN206693283U (en) * | 2017-04-17 | 2017-12-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Device for detecting length of operated bridge pile foundation |
Non-Patent Citations (1)
| Title |
|---|
| 中国水利工程协会: "《岩土工程类 地基与基础》", 31 December 2008, 黄河水利出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459403A (en) * | 2022-02-09 | 2022-05-10 | 广东国鸿氢能科技有限公司 | Rapid detection tool and detection method for fuel cell stack |
| CN114459403B (en) * | 2022-02-09 | 2023-10-20 | 国鸿氢能科技(嘉兴)股份有限公司 | Rapid detection tool and detection method for fuel cell stack |
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Application publication date: 20170714 |
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