CN112362733A - Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column - Google Patents
Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column Download PDFInfo
- Publication number
- CN112362733A CN112362733A CN202011166479.8A CN202011166479A CN112362733A CN 112362733 A CN112362733 A CN 112362733A CN 202011166479 A CN202011166479 A CN 202011166479A CN 112362733 A CN112362733 A CN 112362733A
- Authority
- CN
- China
- Prior art keywords
- signal
- sensor
- noise suppression
- detecting
- upright post
- Prior art date
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001629 suppression Effects 0.000 claims abstract description 38
- 230000005284 excitation Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- 238000009933 burial Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 4
- 229920000298 Cellophane Polymers 0.000 claims description 4
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 4
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a detection device for detecting the buried depth and damage of a highway anti-collision guardrail upright post, which comprises a detection instrument main body, a sensor for receiving a band-pass signal, a sensor fixing device, a signal excitation device and a noise suppression device, wherein the sensor is arranged on the top surface of the guardrail upright post through the sensor fixing device, the noise suppression device is arranged on one side of the sensor, the signal excitation device is used for knocking the guardrail upright post to generate a fluctuation signal, and the signal input end of the detection instrument main body is connected with the signal output end of the sensor. The invention also discloses a detection method for detecting the buried depth and the damage of the upright post of the anti-collision guardrail of the highway. The method has the advantages of obvious incident characteristic of the fluctuation signal and improved reflectivity.
Description
Technical Field
The invention relates to the field of detection, in particular to a detection device and a detection method for detecting the buried depth and damage of a road anti-collision guardrail upright post.
Background
With the development of large-scale social infrastructure construction in China, the demand for convenient and efficient traffic is gradually expanded, and the nation invests huge funds in the field of basic traffic construction, so that the national social infrastructure becomes an important infrastructure for promoting economic development and social progress due to the fact that the country has a wide region and many expressways of population undertake a large regional transportation task. The waveform guardrail upright post of the expressway is the most common and important safety protection facility. Along with the continuous expansion of traffic flow, can inevitably produce the traffic accident, the guardrail stand is to the terminal protection guarantee of traffic participant can effectual reduction vehicle impact force, can effectively avoid the vehicle to rush out the road surface, causes bigger secondary damage, therefore the buried depth and the damage condition of guardrail stand should obtain higher attention.
The prior art system generally adopts a mechanical direct-transmission shock elastic wave signal as a test medium, and generally carries out noise reduction processing through software, but when the frequency ranges of incident signals are complex and various and meet different media, effective signals are often submerged in a plurality of signals, so that the true value of a test result is difficult to solve, the effective signals are easily influenced by excitation noise and upright post embedding conditions in the test process, and the embedded depth and damage of a guardrail upright post to be tested can hardly be realized on the premise of not obtaining a high-quality original signal.
Disclosure of Invention
Aiming at the problems, the invention provides a detection device and a detection method for detecting the buried depth and the damage of the upright post of the anti-collision guardrail of the highway, which have the advantages of making the incident characteristic of a fluctuation signal obvious and improving the reflectivity.
The technical scheme of the invention is as follows:
the utility model provides a detection apparatus for be used for detecting highway anticollision barrier stand burial depth and damage, includes sensor, sensor fixing device, signal excitation device and the noise suppression device that detecting instrument main part, band-pass signal accepted, the sensor passes through the sensor fixing device to be installed the top surface of guardrail stand, the noise suppression device is located one side of sensor, signal excitation device is used for knocking the guardrail stand and produces the undulant signal, the signal input part of detecting instrument main part with the signal output part of sensor is connected.
The working principle of the technical scheme is as follows:
set up sensor and noise control device at the upper surface of guardrail stand, can make the incident characteristic of fluctuation signal obvious, improve the reflectivity, even still enable fluctuation signal and keep very high reflectivity when meetting on the less plane of reflection of impedance difference, and fluctuation signal's stability is good to can effectively restrain the interference signal behind the pulse signal, the detecting instrument main part of being convenient for detects fluctuation signal, the follow-up analysis to fluctuation signal of being convenient for simultaneously.
In a further technical scheme, the noise suppression device is a biaxially oriented polypropylene film, cellophane, polyethylene film or PET film. The purpose is that noise in the knocking process is effectively inhibited through the de-noising device, so that the characteristic recognition rate of the incident fluctuation signal is improved, the reflected signal is more easily, accurately and effectively recognized, and the subsequent analysis on the fluctuation signal is facilitated.
In a further technical scheme, the thickness of the noise suppression device is 0.05mm-0.15 mm. The purpose is that the stability of wave signal is further improved to convenient follow-up analysis of wave signal is detected to the detecting instrument main part.
In a further aspect, the noise suppression device has a tensile strength greater than 30N/cm. The aim is to optimize the reflectivity and stability of the fluctuating signal.
A detection method for detecting the burial depth of a road anti-collision guardrail upright column comprises the following steps:
s01, selecting a noise suppression device with a corresponding size according to the diameter of the guardrail upright post;
s02, adhering a noise suppression device to the end face of the top pipe wall of the guardrail upright post,
s03, adjusting a noise suppression device;
s04, mounting a sensor to the top of the upright post;
and S05, detecting the fluctuation signal of the upright post in the impact process.
The invention has the beneficial effects that:
1. the incident characteristic of the fluctuation signal is obvious, the reflectivity is improved, the fluctuation signal can still keep high reflectivity even when encountering a reflecting surface with small impedance difference, the stability of the fluctuation signal is good, an interference signal behind a pulse signal can be effectively inhibited, and the subsequent analysis of the fluctuation signal is convenient;
2. the thickness of the noise removing device is limited to 0.05mm-0.3mm, so that the reflectivity and the stability of the fluctuation signal can be optimized.
Drawings
Fig. 1 is a schematic overall structural diagram of a detection device for detecting buried depth and damage of a road crash barrier upright according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a signal flow direction structure of a detection device for detecting buried depth and damage of a road crash barrier column according to an embodiment of the invention;
FIG. 3 is a schematic diagram of the waveform of the raw data of a fractured cylinder during the detection process;
FIG. 4 is a schematic diagram of the waveform of the raw data of a square column during detection;
fig. 5 is a waveform diagram of raw data of a circular column during detection.
Description of reference numerals:
10. a guardrail column; 20. a noise suppression device; 30. a sensor; 40. detecting an instrument body; 50. a sensor fixing device; 60. a signal excitation device; A. the test point is tapped.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1-2, a detection device for detecting the buried depth and damage of a road crash barrier upright, includes a detection instrument main body 40, a band-pass signal receiving sensor 30, a sensor fixing device 50, a signal excitation device 60 and a noise suppression device 20, wherein the sensor 30 is installed on the top surface of the crash barrier upright 10 through the sensor fixing device 50, the noise suppression device 20 is installed on one side of the sensor 30, the signal excitation device 60 is used for knocking the crash barrier upright 10 to generate a fluctuation signal, and a signal input end of the detection instrument main body 40 is connected with a signal output end of the sensor 30.
The working principle of the invention is as follows:
the sensor 30 and the noise suppression device 20 are arranged on the upper surface of the guardrail upright post 10, so that the incident characteristic of a fluctuation signal is obvious, the reflectivity is improved, the fluctuation signal can still keep high reflectivity even when encountering a reflecting surface with small impedance difference, the stability of the fluctuation signal is good, an interference signal behind a pulse signal can be effectively suppressed, the detection of the fluctuation signal by the detection instrument main body 40 is facilitated, and the subsequent analysis of the fluctuation signal is facilitated, wherein the hardware of an acquisition system of the sensor 30 is provided with a band-pass filter within the range of 500 Hz-5000 Hz.
In another embodiment, the noise-abatement device 20 is a biaxially oriented polypropylene film, cellophane, polyethylene film, or PET film. The purpose is to effectively suppress the noise in the knocking process by the noise suppression device 20 to improve the characteristic recognition rate of the incident fluctuation signal, so that the reflected signal is easier to accurately and effectively recognize, and the subsequent analysis of the fluctuation signal is facilitated.
In another embodiment, the noise suppressing device 20 has a thickness of 0.05mm to 0.15 mm. The purpose is to further improve the stability of the fluctuation signal, so that the main body 40 of the detecting instrument detects the fluctuation signal to facilitate the subsequent analysis.
In another embodiment, the noise-abatement device 20 has a tensile strength greater than 30N/cm. The aim is to optimize the reflectivity and stability of the fluctuating signal.
A detection method for exciting the burial depth of a guardrail upright post 10 comprises the following steps:
s01, selecting the noise suppression device 20 with a corresponding size according to the diameter of the guardrail upright post 10, wherein the thickness of the noise suppression device 20 is 0.05mmn-0.15mm, and the noise suppression device is made of a biaxially oriented polypropylene film, cellophane, Polyethylene (PE) film or PET film, so that the reflectivity and stability of a fluctuation signal can be optimal;
s02, adhering the noise suppression device 20 to the top of the guardrail solid body, and effectively eliminating interference signals caused by external force during hammering of the signal excitation device 60 by adhering the noise suppression device 20 to the top of the guardrail upright post 10;
s03, adjusting the noise suppression device 20 to avoid the influence of bubbles between the noise suppression device 20 and the guardrail upright post 10 on use;
s04, mounting the sensor 30 with communication signal receiving function to the top of the upright post;
and S05, detecting the fluctuation signal of the upright post in the impact process.
S01, selecting the noise suppression device 20 with the corresponding size according to the diameter of the guardrail upright post 10;
s02, adhering the noise suppression device 20 to the top tube wall end face of the guardrail upright post 10,
s03, adjusting the noise suppression device 20 to make the device closely fit with the end face of the pipe wall without bubbles;
s04, mounting the sensor 30 to the top of the upright post, and adopting a fastening device of the sensor 30 to stabilize the upright post, wherein the linear distance between the sensor 30 and the center point of the noise suppression device 20 is 3-5 cm;
s05, through exciting the central point of the noise suppression device 20, the wave signal of the upright post guardrail needed in the past is new and used for analyzing the embedding depth condition and the damage condition of the upright post.
The specific detection process comprises the following steps:
performing spot inspection on a guardrail upright post 10 of a certain mark section, firstly pasting a noise suppression device 20 on the top of a solid, fixing a sensor 30 on the upright post through a sensor fixing device 50, knocking the noise suppression device 20 by using a hammer, wherein A is a knocking test point, the sensor 30 detects a fluctuation signal in the knocking process and feeds the fluctuation signal back to a detection instrument body 40, and the fluctuation signal is analyzed by the detection instrument body 40; in the detection process of the guardrail upright post 10 in the road section, an abnormal reflection signal exists in a certain guardrail upright post, as shown in fig. 3, the condition of column breakage is preliminarily determined, and the guardrail upright post is pulled out to ensure the accuracy of the detection result. And the extraction result shows that the column is broken at the position close to the bottom of the column. The test result is agreed by field personnel.
The length and buried depth of the guardrail upright post of a certain mark section are subjected to nondestructive detection, firstly, the noise suppression device 20 is pasted at the top of a solid, the sensor 30 is fixed on the upright post through the sensor fixing device 50, the noise suppression device 20 is knocked by a hammer, the sensor 30 detects a fluctuation signal in the knocking process and feeds the fluctuation signal back to the detecting instrument body 40, the detecting instrument body 40 is used for analyzing, the test result is analyzed on site, and the result shows that a square column with the length of 2.54m and a round column with the length of 1.97m are dug out and compared directly for verifying the accuracy of the result, as shown in figures 4 and 5. And pulling out the square column on site, and measuring to obtain that the actual column length of the square column is 2.55m and the difference between the actual column length and the test length is 2.54m by 1 cm. And pulling out the round column on site, and measuring to obtain that the actual column length of the round column is 1.98m and the difference between the actual column length and the test result is 1.97m and is 1 cm.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The utility model provides a detection apparatus for be used for detecting highway anticollision barrier stand burial depth and damage, a serial communication port, including sensor, sensor fixing device, signal excitation device and the noise suppression device that detecting instrument main part, band-pass signal accepted, the sensor passes through sensor fixing device and installs the top surface of guardrail stand, the noise suppression device is located one side of sensor, signal excitation device is used for knocking the guardrail stand and produces the fluctuating signal, the signal input part of detecting instrument main part with the signal output part of sensor is connected.
2. The device for detecting the burial depth and damage of the post of the highway crash barrier as recited in claim 1, wherein the noise suppression device is a biaxially oriented polypropylene film, cellophane, polyethylene film or PET film.
3. The detection device for detecting the burial depth and the damage of the post of the highway crash barrier according to claim 1 or 2, wherein the thickness of the noise suppression device is 0.05mm-0.15 mm.
4. The detection device for detecting the burial depth and damage of the post of the highway crash barrier as recited in claim 3, wherein the tensile strength of the noise suppression device is greater than 30N/cm.
5. A detection method for detecting the buried depth and damage of a road anti-collision guardrail upright post is characterized by comprising the following steps:
s01, selecting a corresponding size according to the diameter of the guardrail upright post;
s02, adhering a noise suppression device to the end face of the top pipe wall of the guardrail upright post,
s03, adjusting a noise suppression device;
s04, mounting a sensor to the top of the upright post;
and S05, detecting the fluctuation signal of the upright post in the impact process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166479.8A CN112362733A (en) | 2020-10-27 | 2020-10-27 | Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166479.8A CN112362733A (en) | 2020-10-27 | 2020-10-27 | Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112362733A true CN112362733A (en) | 2021-02-12 |
Family
ID=74510932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011166479.8A Pending CN112362733A (en) | 2020-10-27 | 2020-10-27 | Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112362733A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808060A (en) * | 2006-02-08 | 2006-07-26 | 交通部公路科学研究院 | Apparatus and method for measuring burial depth of guard rail steel pipe post by employing elastic wave |
| CN1844908A (en) * | 2006-03-20 | 2006-10-11 | 天津工业大学 | Ultrasonic wave detection method and detection apparatus therefor |
| CN207895066U (en) * | 2018-02-06 | 2018-09-21 | 山东路达试验仪器有限公司 | A kind of real-time position monitor steel guardrail column buried depth impact elasticity wave detector |
| CN208043749U (en) * | 2018-04-18 | 2018-11-02 | 石河子大学 | A kind of sensor contacts power antioverloading type bergamot pear hardness non-destructive testing device |
| CN108802183A (en) * | 2018-06-15 | 2018-11-13 | 招商局重庆交通科研设计院有限公司 | Road waved guardrail Column stability in-situ check and test method |
| CN108867359A (en) * | 2018-07-12 | 2018-11-23 | 平阳明盛建设有限公司 | Municipal bridge guardrail with denoising device |
| CN109653133A (en) * | 2018-12-17 | 2019-04-19 | 四川陆通检测科技有限公司 | A kind of fence upright with decrease of noise functions |
| CN209295931U (en) * | 2018-11-14 | 2019-08-23 | 四川升拓检测技术股份有限公司 | A kind of sensor fastening device for strut length detection |
| CN111256610A (en) * | 2020-02-27 | 2020-06-09 | 交通运输部公路科学研究所 | Device and method for measuring embedded depth of upright post of plug-in type edge-approaching guardrail |
| CN111279179A (en) * | 2017-10-27 | 2020-06-12 | 柏林洪堡大学 | Photoacoustic sensor head and photoacoustic measuring instrument with improved interference signal suppression |
-
2020
- 2020-10-27 CN CN202011166479.8A patent/CN112362733A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808060A (en) * | 2006-02-08 | 2006-07-26 | 交通部公路科学研究院 | Apparatus and method for measuring burial depth of guard rail steel pipe post by employing elastic wave |
| CN1844908A (en) * | 2006-03-20 | 2006-10-11 | 天津工业大学 | Ultrasonic wave detection method and detection apparatus therefor |
| CN111279179A (en) * | 2017-10-27 | 2020-06-12 | 柏林洪堡大学 | Photoacoustic sensor head and photoacoustic measuring instrument with improved interference signal suppression |
| CN207895066U (en) * | 2018-02-06 | 2018-09-21 | 山东路达试验仪器有限公司 | A kind of real-time position monitor steel guardrail column buried depth impact elasticity wave detector |
| CN208043749U (en) * | 2018-04-18 | 2018-11-02 | 石河子大学 | A kind of sensor contacts power antioverloading type bergamot pear hardness non-destructive testing device |
| CN108802183A (en) * | 2018-06-15 | 2018-11-13 | 招商局重庆交通科研设计院有限公司 | Road waved guardrail Column stability in-situ check and test method |
| CN108867359A (en) * | 2018-07-12 | 2018-11-23 | 平阳明盛建设有限公司 | Municipal bridge guardrail with denoising device |
| CN209295931U (en) * | 2018-11-14 | 2019-08-23 | 四川升拓检测技术股份有限公司 | A kind of sensor fastening device for strut length detection |
| CN109653133A (en) * | 2018-12-17 | 2019-04-19 | 四川陆通检测科技有限公司 | A kind of fence upright with decrease of noise functions |
| CN111256610A (en) * | 2020-02-27 | 2020-06-09 | 交通运输部公路科学研究所 | Device and method for measuring embedded depth of upright post of plug-in type edge-approaching guardrail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101560778B (en) | Geophysical prospection stress wave detection method for building foundation pile | |
| CN103344288B (en) | A kind of transit-time ultrasonic flow meter measuring method analyzed based on zero point | |
| CN102422154B (en) | System, device for structural damage detection and method for structural damage detection | |
| CN101539541B (en) | Detection method of thick beam structure damage based on guide wave | |
| CN102944608B (en) | Device and method for ultrasonic testing of corrugated pipe duck grouting compactness | |
| CN103575807B (en) | The girder construction damage detecting method of Teager energy operator-wavelet transformation camber mode | |
| CN100416269C (en) | Non destructive detection mothod used for anchor rod anchored system | |
| CN102183226B (en) | Based on the anchor rod nondestructive testing method of Multi-source Information Fusion | |
| CN104965023B (en) | Multi-modal guided wave industrial pipeline diagnostic method | |
| CN104807883A (en) | Detection method of grouting compactness entity of wall | |
| CN1696686A (en) | System for testing quality of cast in place concrete pile | |
| CN103308012A (en) | Concrete pavement thickness detection system and detection method | |
| CN206090647U (en) | Pile foundation detection equipment | |
| CN104007176A (en) | Full-wave field detection system and method of complex geotechnical engineering medium | |
| CN110455917B (en) | Concrete crack repair quality detection method | |
| CN103940911A (en) | Detection device and method for service bridge inhaul cable/suspension cable anchor system | |
| CN106950282A (en) | A kind of fiber reinforced plastics rod defect inspection method and system based on longitudinal ultrasonic guided wave | |
| CN107132274A (en) | A kind of method of testing of bridge prestress pore channel Grouted density | |
| CN110954033A (en) | Concrete crack depth detection method and system | |
| CN104594395A (en) | Operation railroad bed side drilling pile foundation detection structure and detection method | |
| CN115404920A (en) | Foundation pile detection method and system | |
| CN109469114B (en) | Low-strain existing foundation pile integrity detection method capable of eliminating upper structure influence | |
| CN109765303B (en) | Detection method for void degree behind lining structure | |
| CN112362733A (en) | Detection device and method for detecting buried depth and damage of highway anti-collision guardrail stand column | |
| CN106053602A (en) | A self-closed rock bolt nondestructive testing method based on a magnetostrictive effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |