CN204154684U - Bridge prestress pipeline compactness of grouting detector - Google Patents
Bridge prestress pipeline compactness of grouting detector Download PDFInfo
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- CN204154684U CN204154684U CN201420606525.5U CN201420606525U CN204154684U CN 204154684 U CN204154684 U CN 204154684U CN 201420606525 U CN201420606525 U CN 201420606525U CN 204154684 U CN204154684 U CN 204154684U
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Abstract
The utility model discloses a kind of bridge prestress pipeline compactness of grouting detector, comprise main frame, vibrator and receiver, vibrator is electrically connected with main frame, receiver comprise individually with vibrator with the use of the first receiver and the second receiver; During cross-hole sonic logging, first receiver is electrically connected with main frame, vibrator and the first receiver are separately positioned on bridge prestress pipeline two opposed end, and vibrator produces acoustic signals and runs through prestressed pore passage, and the first receiver receives transmission signal and transfers to main frame and carries out defect analysis; During the ultra sonic scanner of side, second receiver is electrically connected with main frame, vibrator and the second receiver scan in the same side of prestressed pore passage, and vibrator sends acoustic signals and detects defective locations, and the second receiver receives sweep signal and transfers to main frame and carries out defective locations analysis.Compared with prior art, this detector can detect slip casting defect and locate, and error is little, and accurately and reliably, application prospect is very wide for positioning result.
Description
Technical field
The utility model relates to a kind of detector, specifically, relates to a kind of bridge prestress pipeline compactness of grouting detector, belongs to detecting instrument technical field.
Background technology
At present, Prestressed Concrete Bridges is occupied an leading position in Bridges in Our Country construction, is widely used on the important construction projects such as Transbay Bridge, Qingdao, Construction of Hangzhou Bay Cross-sea Bridge, Su-Tong Brideg.For Prestressed Concrete Bridges, presstressed reinforcing steel location will definitely not cause loss of prestress, in construction process, even cause beam body to burst apart, therefore prestress wire will guarantee long-term role in bridge use procedure, reach designing requirement, the grouting quality of prestress pipe is one of its important influence factor.
The object of bridge prestress pipeline slip casting is to protect presstressed reinforcing steel not to be corroded; prestress can play the effect that it increases beam body load-bearing capacity and structure durability for a long time; mainly rely on the ground tackle of component ends that the prestressing force of steel strand wires is passed to concrete; it is made to produce compressive pre-stress; in duct, be pressed into grout again, make prestress wire and concrete component form entirety.If prestress pipe slip casting leakiness, metal material corrosion rate under high-stress state is very fast, steel strand wires material in duct easily corrodes, thus affect permanance and the security of bridge, and when there is squeezing quality defect under presstressed reinforcing steel, there will be concrete stress and concentrate and cause destruction, pass in time, also can cause loss of prestress phenomenon, cause the design stress of beam body to change, thus affect the serviceable life of bridge.
In bridge construction, the uncompacted problem of prestress slip casting was just subject to extensive concern both domestic and external before the more than ten years.Be built in the Britain Ynys-Gwas bridge of nineteen fifty-three, collapsed suddenly in 1985, study through the transport of Britain and road research laboratory (TRRL) and find that this bridge collapse is that the deformed bar corrosion caused due to slip casting leakiness caused.In addition, being built in the Bissell bridge of the Connecticut, USA of nineteen fifty-seven, is equally also because the bridge safty that the presstressed reinforcing steel corrosion that slip casting leakiness causes causes reduces, and also has to rebuild in demolition in 1992 after employing 35 years.By analyzing above-mentioned two accidents, the main cause of steel strand wires corrosion is caused to be exactly prestressed pore passage slip casting leakiness.Therefore, the quality of grouting quality directly has influence on the Corrosion Protection of presstressed reinforcing steel, the security performance of Prestressed Concrete Bridges and endurance quality.
Advanced Dynamic Non-Destruction Measurement is adopted to detect the overall grouting quality of the pipeline of prestressed structure, significant to the quality condition of objective evaluation structure., in succession have carried out some research both at home and abroad for this reason, propose many detection methods.The methods such as such as Impact echo, ultrasonography, surface wave spectral imaging method, ground penetrating radar method, electromagnetic wave (radar), X-ray, gamma-rays method, energy attenuation method and the ultrasonic phase tactical deployment of troops.From transmit a little with the position relationship of trusted point, said method can be divided into transmission beam method and reflectometry; From the test media adopted, these methods can be divided into two large classes again, based on the method beyond the method for elastic wave (comprising ultrasound wave) and elastic wave.Though these methods have obtained certain progress, also has certain gap apart from Practical: as x-ray detection device exists equipment complexity, cost intensive and safety problem; Radar scanning pick-up unit is only applicable to the detection of plastic film capicitor, and for metallic bellows because electromagnetic wave cannot penetrate, radar cannot detect internal defects, and applicable surface is narrower, and radar scanning be subject to outside reinforcing bar interference, stability and reliability poor; Impact echo pick-up unit time-domain representation used can only represent not the size of energy in the same time, Fourier analysis is the analysis for steady-state process, can only disclose the energy distribution that different frequency is corresponding, cannot know the time that these frequency contents occur, accuracy of detection is poor.
Consider that above-mentioned detection device all exists defect more or less, in prior art, many employing development are very fast, technology is more ripe, the good ultrasonic detection device of versatility, this device is two opposite faces two probes being placed in respectively test specimen, a probe is launched, another reception of popping one's head in, penetrate the time after test specimen according to ultrasound wave, energy variation situation judges test specimen internal soundness, if zero defect in detected object, it is little that sound wave penetrates rear decay, corresponding Received signal strength is stronger, otherwise the signal that receiving transducer receives is more weak.The advantage of this kind of pick-up unit there is not blind area in testing process, and detect wide, detection efficiency is high.But, the ultrasonic detection device adopted in prior art can only carry out cross-hole sonic logging to determine whether there is slip casting defect to pre-stressed bridge separately mostly, and the particular location of slip casting defect cannot be detected, be unfavorable for that testing staff and construction technical staff are to the accurate assurance of slip casting defective locations, and then affect reparation progress, incur loss through delay the overall duration; Although some ultrasonic detection device possesses slip casting defect location function, add detection and localization equipment accordingly, make whole pick-up unit volume huge, complex structure, cost is higher, uneconomical, does not possess good promotion and application and is worth.In addition, exciting hammer (power hammer) that this kind of traditional many employing of ultrasonic detection device vary in size provides the hammer vibration energy varied in size, owing to being manual hand manipulation, therefore the hammer vibration energy poor stability that hammering produces, easy stability and the accuracy affecting probe received signal, and then affect the reliability of testing result, be unfavorable for quality control.
Therefore, a kind of structure is simple, hammer vibration energy is stablized, have the novel detection device of detection and positioning function concurrently urgently releases.
Utility model content
For the problems referred to above that prior art exists, the purpose of this utility model is to provide a kind of bridge prestress pipeline compactness of grouting detector, this pick-up unit can detect slip casting defect and to slip casting defect location, whole apparatus structure is simple, convenient to operation, detection and positioning error is little, and result accurately and reliably.
For realizing above-mentioned utility model object, the technical solution adopted in the utility model is as follows:
Bridge prestress pipeline compactness of grouting detector, comprise main frame, vibrator and receiver, vibrator is electrically connected with main frame, for generation of acoustic signals; Receiver comprises the first receiver and the second receiver, the first receiver and the second receiver individually with vibrator with the use of; When cross-hole sonic logging, first receiver is electrically connected with main frame, vibrator and the first receiver are separately positioned on bridge prestress pipeline two opposed end, vibrator exciting produces elastic sound waves signal to be run through prestressed pore passage and detects, and the first receiver receives detection signal that transmission comes and transfers to main frame and carries out defect analysis; When side ultra sonic scanner, the second receiver is electrically connected with main frame, vibrator and the second receiver scan in the same side of prestressed pore passage, vibrator exciting sends elastic sound waves input defective locations, and the second receiver receives detection signal that bounce-back returns and transfers to main frame and carry out defective locations analysis.
Preferably, vibrator and receiver are electrically connected with the output terminal of main frame and input end respectively, main frame controls the automatic exciting of vibrator by its output terminal, produces elastic sound waves signal, and acoustic signals is also transferred to main frame by input end by the acoustic signals that receiver reception vibrator sends.
More preferably, when cross-hole sonic logging, vibrator is arranged on the end of bridge prestress pipeline, one end of first receiver is electrically connected with the input end of main frame, the other end is arranged on another opposed end of bridge prestress pipeline, and the first receiver receives slip casting flaw indication and signal is transferred to main frame by input end.
Further preferably, vibrator and the first receiver are arranged on the steel strand wires of bridge prestress pipe ends respectively.
More preferably, when side ultra sonic scanner, vibrator is arranged on a side of bridge beam slab, one end of second receiver is electrically connected with the input end of main frame, the other end is placed in the same side of bridge beam slab, and the position signalling of the slip casting defect received in the ultra sonic scanner process of side can be transferred to main frame by input end by the second receiver.
Further preferably, vibrator and the second receiver are arranged on the check point place of bridge beam slab same side.
Preferably, receiver adopts cost not high, simple for production and maneuverable transducer.
More preferably, receiver adopt in transducer use the most extensively, the piezoelectric transducer of the most mature and reliable of technology.
More preferably, the low frequency in the first receiver employing piezoelectric transducer or ultralow frequency piezoelectric accelerometer, the impact piezoelectric accelerometer in the second receiver employing piezoelectric transducer or common piezoelectric accelerometer.
Further preferably, the frequency range of the low frequency that the first receiver adopts or ultralow frequency piezoelectric accelerometer is 0.2 ~ 1KHz, and precision is 3000pC/g.
Further preferably, the second receiver adopts and impacts piezoelectric accelerometer, and the frequency range of this impact piezoelectric accelerometer is 1 ~ 10K Hz, and precision is 20pC/g.
Further preferably, the second receiver adopts common piezoelectric accelerometer, and the frequency range of this common piezoelectric accelerometer is 0.5 ~ 8K Hz, and precision is 50pC/g.
Preferably, in order to simplify detector structure, reduce the volume of detector, main frame is integrated machine, and main frame is provided with power supply, display screen and processor, and power supply is electrically connected with display screen and processor respectively, with thinking that display screen and processor are powered, data cube computation between display screen and processor, display screen is in order to show slip casting defect information, and processor is in order to realize the functions such as detection, control, treatment and analysis.
More preferably, in order to simplify detector structure further, display screen adopts liquid crystal touch display screen, and operator directly can input instruction on screen, convenient and swift.
More preferably, processor comprise detection control analysis software and with detection control analysis software data cube computation receive and dispatch control module, parameter setting module, data analysis module and data memory module.
Further preferably, detection control analysis software comprises cross-hole sonic logging program and side ultra sonic scanner program further, in cross-hole sonic logging process, the data that first receiver imports into carry out divisional processing to draw slip casting defects detection result by cross-hole sonic logging program, in the ultra sonic scanner process of side, the data that the second receiver imports into carry out analyzing and processing to draw slip casting defect particular location by side ultra sonic scanner program.
Another object of the utility model is to provide a kind of bridge prestress pipeline compactness of grouting detector, for making the receiver Received signal strength in detector reliable and stable, the accuracy of further guarantee testing result, inventor has made improvement to the vibrator in detector, enable the accumulation signal that this vibrator produce power is stable, the signal stabilization that receiver receives is reliable, ensures the accuracy of testing result.
In the bridge prestress pipeline compactness of grouting detector of above-mentioned arbitrary structure, vibrator adopts Re Super Magnetostrictive Transducer, this Re Super Magnetostrictive Transducer can cyclic extension and shortening under action of alternating magnetic field, thus produce vibration or sound wave, its Magnetostriction not time to time change, without problems such as fatigue, overheating failures, therefore the energy stability produced is good, and reliability is high.
Preferably, Re Super Magnetostrictive Transducer is cylindric, specifically comprise housing and to be arranged in housing and end to end output guide block, super bar magnet, lower guide block, lower magnetic conduction iron, permanent magnet, upper magnetic conduction iron and the coil that is arranged between super bar magnet and permanent magnet in turn, coil is electrically connected with the output terminal of main frame.
Compared with prior art, the beneficial effects of the utility model are: detector structure is simple, and overall volume is less, has portability; The method of side scanning is adopted to position slip casting defect, convenient to operation, and degree of accuracy is high, error is little, and positioning result is accurately and reliably; Adopt Re Super Magnetostrictive Transducer as vibrator, energy conversion efficiency is high, response time is short, frequency characteristic is good, can work at low frequencies, working band is wide, and the Magnetostriction of Re Super Magnetostrictive Transducer not time to time change, without problems such as fatigue, overheating failures, the energy stabilization of generation is reliable; Therefore, good application prospect and promotional value is possessed.
Annex explanation
The structural representation of the preferred embodiment of the bridge prestress pipeline compactness of grouting detector that Fig. 1 provides for the utility model;
The theory of constitution block diagram of the processor of the preferred embodiment of the bridge prestress pipeline compactness of grouting detector that Fig. 2 provides for the utility model;
The cross-hole sonic logging schematic diagram of the preferred embodiment of the bridge prestress pipeline compactness of grouting detector that Fig. 3 provides for the utility model;
The side ultra sonic scanner schematic diagram of the preferred embodiment of the bridge prestress pipeline compactness of grouting detector that Fig. 4 provides for the utility model;
The structural representation of the Re Super Magnetostrictive Transducer of the preferred embodiment of the bridge prestress pipeline compactness of grouting detector that Fig. 5 provides for the utility model.
Embodiment
Do to illustrate in detail, intactly further to the utility model below in conjunction with embodiment and accompanying drawing.
The preferred embodiment schematic diagram of the bridge prestress pipeline compactness of grouting detector that Fig. 1 to Fig. 5 provides for the utility model.As shown in Figure 1 and Figure 5, this bridge prestress pipeline compactness of grouting detector comprises main frame 1, Re Super Magnetostrictive Transducer 2 and piezo receiver 3, Re Super Magnetostrictive Transducer 2 is in cylindric, specifically comprise housing 201 and to be arranged in housing 201 and end to end output guide block 202 in turn, super bar magnet 203, lower guide block 204, lower magnetic conduction iron 205, permanent magnet 206, upper magnetic conduction iron 207 and the coil 208 be arranged between super bar magnet 203 and permanent magnet 206, coil 208 is electrically connected with the output terminal of main frame 1, main frame 1 controls Re Super Magnetostrictive Transducer 2 exciting automatically by its output terminal, to produce elastic sound waves detection signal, receiver 3 comprises the first receiver 301 and the second receiver 302, first receiver 301 adopts low frequency piezoelectric accelerometer, its frequency range is 0.2 ~ 1KHz, precision is 3000pC/g, second receiver 302 adopts and impacts piezoelectric accelerometer, the frequency range of this impact piezoelectric accelerometer is 1 ~ 10K Hz, and precision is about 20pC/g, first receiver 301 and the second receiver 302 individually with Re Super Magnetostrictive Transducer 2 with the use of, when carrying out cross-hole sonic logging, Re Super Magnetostrictive Transducer 2 one end is electrically connected with main frame 1 respectively with first receiver 301 one end, Re Super Magnetostrictive Transducer 2 other end and first receiver 301 other end are separately positioned on bridge prestress pipeline two opposed end, Re Super Magnetostrictive Transducer 2 exciting produces elastic sound waves signal to be run through prestressed pore passage and detects, and the first receiver 301 receives transmission and drags the detection signal that comes and transfer to main frame 1 and carry out defect analysis, when carrying out side ultra sonic scanner, Re Super Magnetostrictive Transducer 2 one end is electrically connected with main frame 1 respectively with second receiver 302 one end, Re Super Magnetostrictive Transducer 2 other end and second receiver 302 other end are arranged on the same side of prestressed pore passage simultaneously, and be scanned up to the other end along prestressed pore passage one end, scanning process middle rare earth giant magnetostrictive transducer 2 exciting sends elastic sound waves input defective locations, and the second receiver 302 receives detection signal that bounce-back returns and transfers to main frame 1 and carry out defect location.
As depicted in figs. 1 and 2, in order to simplify detector structure, reduce the volume of detector, main frame 1 adopts all-in-one form, main frame 1 is provided with power supply (not shown), display screen 101 and processor 102, and power supply is electrically connected with display screen 101 and processor 102 respectively, with thinking that display screen 101 and processor 102 are powered, display screen 101 is in order to show slip casting defect information, and processor 102 is in order to realize the functions such as detection, control, treatment and analysis; In order to simplify detector structure further, display screen 101 adopts liquid crystal touch display screen, and operator directly can input instruction on screen, convenient and swift.Processor 102 specifically comprise detection control analysis software 1021 and with detection control analysis software 1021 data cube computation receive and dispatch the hardware modules 1022 such as control module 10221, parameter setting module 10222, data analysis module 10223 and data memory module 10224.In addition, detection control analysis software 1021 comprises cross-hole sonic logging program 10211 and side ultra sonic scanner program 10212 further, respectively in order to detect slip casting defect and to position slip casting defect.
As shown in Figure 3 and Figure 4, the course of work of this detector successively comprises cross-hole sonic logging process and side ultra sonic scanner process, respectively in order to detect slip casting defect and to position slip casting defect.Wherein, the concrete operation method of cross-hole sonic logging process is: first by Re Super Magnetostrictive Transducer 2 and the output terminal and the input end that adopt first receiver 301 one end of low frequency piezoelectric accelerometer to be connected to main frame 1, the other end of Re Super Magnetostrictive Transducer 2 and the first receiver 301 is vertically mounted on the steel strand wires cross section at prestressed pore passage two ends respectively, again the liquid crystal touch display screen 101 of detector main frame 1 enterprising enter sound wave transmission method operation and control interface go forward side by side line parameter arrange and upgrade, start to start cross-hole sonic logging after optimum configurations is good, signals collecting is carried out after the signal determining to receive is normal, preserve respectively after gathering three groups of data, the data analysis process of finally will preserve, draw slip casting defects detection result.The concrete operation method of side ultra sonic scanner process is: second receiver 302 one end first Re Super Magnetostrictive Transducer 2 and employing being impacted piezoelectric accelerometer is connected to output terminal and the input end of main frame 1, again the other end of Re Super Magnetostrictive Transducer 2 and the second receiver 302 is all placed in the check point place of bridge beam slab side, distance between Re Super Magnetostrictive Transducer 2 and the second receiver 302 is 5cm, enter on the liquid crystal touch display screen 101 of detector main frame 1 again side ultra sonic scanner method operation and control interface go forward side by side line parameter arrange and upgrade, start after optimum configurations is good to start scanning, measuring point Re Super Magnetostrictive Transducer 2 and the second receiver 302 marked from edge, beam slab one end after the signal determining to receive is normal carries out data acquisition successively to the other end and preserves, the data analysis process of finally will preserve, draw the positioning result of slip casting defect.
Finally be necessary described herein: above embodiment is only for being described in more detail the technical solution of the utility model; can not be interpreted as the restriction to the utility model protection domain, some nonessential improvement that those skilled in the art makes according to foregoing of the present utility model and adjustment all belong to protection domain of the present utility model.
Claims (12)
1. bridge prestress pipeline compactness of grouting detector, it is characterized in that: comprise main frame, vibrator and receiver, vibrator is electrically connected with main frame, and receiver comprises the first receiver and the second receiver, the first receiver and the second receiver individually with vibrator with the use of; When cross-hole sonic logging, first receiver is electrically connected with main frame, vibrator and the first receiver are separately positioned on bridge prestress pipeline two opposed end, vibrator exciting produces elastic sound waves signal to be run through prestressed pore passage and detects, and the first receiver receives detection signal that transmission comes and transfers to main frame and carries out defect analysis; When side ultra sonic scanner, the second receiver is electrically connected with main frame, vibrator and the second receiver scan in the same side of prestressed pore passage, vibrator exciting sends elastic sound waves input defective locations, and the second receiver receives detection signal that bounce-back returns and transfers to main frame and carry out defective locations analysis.
2. bridge prestress pipeline compactness of grouting detector according to claim 1, it is characterized in that: vibrator and receiver are electrically connected with the output terminal of main frame and input end respectively, the automatic exciting of host computer control vibrator produces elastic sound waves signal, and receiver receives the acoustic signals of vibrator generation and the acoustic signals of reception is transferred to main frame by input end.
3. bridge prestress pipeline compactness of grouting detector according to claim 1, is characterized in that: receiver is transducer.
4. bridge prestress pipeline compactness of grouting detector according to claim 1, is characterized in that: receiver is piezoelectric transducer.
5. bridge prestress pipeline compactness of grouting detector according to claim 4, it is characterized in that: the first receiver is low frequency in piezoelectric transducer or ultralow frequency piezoelectric accelerometer, the second receiver is impact piezoelectric accelerometer in piezoelectric transducer or common piezoelectric accelerometer.
6. bridge prestress pipeline compactness of grouting detector according to claim 5, is characterized in that: the frequency range of low frequency or ultralow frequency piezoelectric accelerometer is 0.2 ~ 1KHz, and precision is 3000pC/g.
7. bridge prestress pipeline compactness of grouting detector according to claim 5, is characterized in that: the second receiver is for impacting piezoelectric accelerometer, and frequency range is 1 ~ 10K Hz, and precision is 20pC/g.
8. bridge prestress pipeline compactness of grouting detector according to claim 5, it is characterized in that: the second receiver is common piezoelectric accelerometer, frequency range is 0.5 ~ 8K Hz, and precision is 50pC/g.
9. bridge prestress pipeline compactness of grouting detector according to claim 1, it is characterized in that: main frame is integrated machine, main frame is provided with power supply, display screen and processor, and power supply is electrically connected with display screen and processor respectively, data cube computation between display screen and processor.
10. bridge prestress pipeline compactness of grouting detector according to claim 9, is characterized in that: display screen is liquid crystal touch display screen.
11., according to the arbitrary described bridge prestress pipeline compactness of grouting detector of claim 1-10, is characterized in that: vibrator adopts Re Super Magnetostrictive Transducer.
12. bridge prestress pipeline compactness of grouting detectors according to claim 11, it is characterized in that: Re Super Magnetostrictive Transducer comprises housing and to be arranged in housing and end to end output guide block, super bar magnet, lower guide block, lower magnetic conduction iron, permanent magnet, upper magnetic conduction iron and the coil that is arranged between super bar magnet and permanent magnet in turn, is electrically connected between coil and the output terminal of main frame.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784754A (en) * | 2016-02-25 | 2016-07-20 | 山西省交通科学研究院 | System and method for detecting compactness of prestressed pore channel of prestressed concrete structure |
| CN106153727A (en) * | 2016-08-19 | 2016-11-23 | 中建七局(上海)有限公司 | A kind of building grouting plumpness detection device and detection method |
| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN106770663A (en) * | 2017-03-07 | 2017-05-31 | 无锡飞述科技有限公司 | Building concrete damage detection device |
| CN110044561A (en) * | 2019-05-07 | 2019-07-23 | 宋鹏威 | A kind of bridge security detection device |
| CN110319978A (en) * | 2018-03-29 | 2019-10-11 | 深圳市水务(集团)有限公司 | Valve airtightness detection method, device, terminal device and storage medium |
| CN111413739A (en) * | 2020-04-16 | 2020-07-14 | 成都农业科技职业学院 | Method for detecting grouting defect of bridge stress pipeline based on ground penetrating radar method |
| CN111426749A (en) * | 2019-09-05 | 2020-07-17 | 湖南工业大学 | Anchor hole grouting quality detection device capable of being quickly installed and positioned |
| CN113984889A (en) * | 2021-10-27 | 2022-01-28 | 郑州大学 | Corrugated pipe grouting compactness detection method |
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2014
- 2014-10-20 CN CN201420606525.5U patent/CN204154684U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN105784754A (en) * | 2016-02-25 | 2016-07-20 | 山西省交通科学研究院 | System and method for detecting compactness of prestressed pore channel of prestressed concrete structure |
| CN106153727A (en) * | 2016-08-19 | 2016-11-23 | 中建七局(上海)有限公司 | A kind of building grouting plumpness detection device and detection method |
| CN106770663A (en) * | 2017-03-07 | 2017-05-31 | 无锡飞述科技有限公司 | Building concrete damage detection device |
| CN110319978A (en) * | 2018-03-29 | 2019-10-11 | 深圳市水务(集团)有限公司 | Valve airtightness detection method, device, terminal device and storage medium |
| CN110044561A (en) * | 2019-05-07 | 2019-07-23 | 宋鹏威 | A kind of bridge security detection device |
| CN110044561B (en) * | 2019-05-07 | 2020-09-15 | 王敏帆 | Bridge safety inspection equipment |
| CN111426749A (en) * | 2019-09-05 | 2020-07-17 | 湖南工业大学 | Anchor hole grouting quality detection device capable of being quickly installed and positioned |
| CN111413739A (en) * | 2020-04-16 | 2020-07-14 | 成都农业科技职业学院 | Method for detecting grouting defect of bridge stress pipeline based on ground penetrating radar method |
| CN113984889A (en) * | 2021-10-27 | 2022-01-28 | 郑州大学 | Corrugated pipe grouting compactness detection method |
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