CN106836170B - A method of it is damaged using acoustic emission detection roadbase - Google Patents
A method of it is damaged using acoustic emission detection roadbase Download PDFInfo
- Publication number
- CN106836170B CN106836170B CN201710201359.9A CN201710201359A CN106836170B CN 106836170 B CN106836170 B CN 106836170B CN 201710201359 A CN201710201359 A CN 201710201359A CN 106836170 B CN106836170 B CN 106836170B
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- CN
- China
- Prior art keywords
- roadbase
- acoustic emission
- waveguide rod
- detection
- borehole plug
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of method using acoustic emission detection roadbase damage, it includes road deck, roadbase and roadbase damage that road, which is constituted,；Detection device includes acoustic emission sensor, sound emission acquisition device, borehole plug and waveguide rod；The sound emission acquisition device and acoustic emission sensor are connected with shielding line, acoustic emission sensor is coupled in the boss surface of waveguide rod, waveguide rod is filled in the inner hole of borehole plug, borehole plug is filled in the hole on lane line, hole on the lane line is to drill to obtain by drilling machine, is only existed on road deck.Acoustic emission detection is applied in Road Detection by the present invention, is compensated for Ground Penetrating Radar and is detected the tiny biggish defect of Defect inspection difficulty.
Description
Technical field
The invention belongs to road disease detection fields, and in particular to a kind of to be damaged using acoustic emission detection roadbase
Method, be mainly used in the advanced prediction to road disease, be a kind of lossless detection method.
Background technique
Semi-rigid type base has the advantages that good integrity, intensity is high, low cost, and the overwhelming majority is high in China super highway
Grade Asphalt Pavement Road all uses semi-rigid type base.As road comes into operation, the disease for influencing normal operation is continuously emerged in road
Evil, such as crack are aqueous etc..In order to forecast road disease in advance, road maintenance expense is reduced, guarantees road normal operation, road
Non-destructive testing is just particularly important.The lossless detection method of road disease is mainly Ground Penetrating Radar, Ground Penetrating Radar detection at present
It often applies and is detecting the large range of diseases such as roadbed is empty, comes to nothing, Defect inspection difficulty tiny for the cracking of base etc.
It is larger.And Acoustic radiating instrument can monitor damage development of the structure under load action, can determine sound emission by signal analysis
The position in source, determines the stress history of material and the degree of material damage, therefore acoustic emission detection at the property for analyzing acoustic emission source
It is one of good nondestructiving detecting means.It can be carried out in view of acoustic emission testing technology needs load action, and on road
The vehicle of traveling, especially heavy-duty vehicle are loaded to road just, are made full use of this feature just and be can be carried out sound emission inspection
It surveys.
Summary of the invention
It can not be carried out using acoustic emission present invention aims at being laid below road deck for roadbase
The problem of directly detecting provides a kind of based on acoustic emission, the method for utilizing waveguide rod detection roadbase to damage.
It is of the invention the specific scheme is that a kind of method using acoustic emission detection roadbase damage,
Road composition includes: road deck, roadbase and roadbase damage；
Detection device includes: acoustic emission sensor, sound emission acquisition device, borehole plug and waveguide rod；The sound emission
Acquisition device and acoustic emission sensor are connected with shielding line, and acoustic emission sensor is coupled in the boss surface of waveguide rod, waveguide rod
It fills in the inner hole of borehole plug, borehole plug is filled in the hole on lane line, and the hole on the lane line is by drilling machine
Drilling obtains, and only exists on road deck.
Preferably, the roadbase is semi-rigid type base.
Preferably, the material of the waveguide rod is mild steel, and diameter d is 16mm, the thickness L phase of length and road deck
Deng, and the upper end has cone boss；Cone boss height the h < 1/5*L, boss upper surface diameter D of the waveguide rod >=
1.5*h+d。
Preferably, the borehole plug is open circles tubulose, and 4/5 of height H less than waveguide pole length L is greater than waveguide rod
The 2/3 of length L, the hole size of borehole plug are less than the diameter d of waveguide rod, and outer diameter is determined according to the hole diameter on lane line,
Generally 100mm；The material of borehole plug is the strong elasticities materials such as rubber.
Preferably, the waveguide rod is tightly filled in borehole plug, the hole bottom on borehole plug fortress to lane line.
Preferably, for the waveguide rod under the action of borehole plug, lower end surface firmly withstands on roadbase upper surface.
The beneficial effect comprise that:
1, acoustic emission detection is applied in Road Detection, it is larger compensates for the tiny Defect inspection difficulty of Ground Penetrating Radar detection
Defect；
2, acoustic emission signal when roadbase being cracked using waveguide rod is drawn out to ground, realizes the sound hair of roadbase
Penetrate detection；
3, squeeze waveguide rod using borehole plug realizes so that waveguide rod is firmly coupled to roadbase upper surface
The fixation of waveguide rod on roadbase.
Detailed description of the invention
Fig. 1 is acoustic emission detection sectional view of the invention；
Fig. 2 is acoustic emission detection plan view of the invention；
Fig. 3 is borehole plug and waveguide rod detail drawing of the invention；
Fig. 4 is A-A cross-section diagram in Fig. 3；
Fig. 5 is waveguide rod scheme of installation of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the present invention need the entire road that detects constitute include road deck a, roadbase b and
Roadbase damage 5；Detection device used in the present invention includes acoustic emission sensor 1, sound emission acquisition device 2, borehole plug 3
With waveguide rod 4.The present invention need to bore a hole with drilling machine on the lane line of road deck a, and general bore diameter is for 100mm
Can, drilling depth is preferably equal to road deck thickness.
As shown in Figure 3 and Figure 4, for the material of waveguide rod 4 used in the present invention for mild steel, diameter d is 16mm, length and
The thickness L of road deck a is equal, and the upper end has cone boss；The cone boss height h < 1/5*L of waveguide rod 4, boss
Upper surface diameter D >=1.5*h+d.Waveguide rod 4 should be filled in borehole plug 3, and must pass completely through borehole plug 3 and expose waveguide rod
4 lower end；Borehole plug 3 is open circles tubulose, and 4/5 of height H less than 4 length L of waveguide rod is greater than the 2/3 of waveguide pole length L,
The hole size of borehole plug 3 is less than the diameter d of waveguide rod 4, and outer diameter is determined according to the hole diameter on lane line, generally
100mm；The material of borehole plug 3 is the strong elasticities materials such as rubber.As seen from Figure 4, since the diameter of waveguide rod 4 is greater than drilling
The internal orifice dimension of plug 3, after waveguide rod 4 is fully inserted into borehole plug 3, the outer diameter of borehole plug 3 can slightly increase, that is, it is straight to be greater than hole
Diameter.The borehole plug 3 of holding waveguide rod 4 is filled in the aperture on road deck a lane line at this time, borehole plug 3 must be filled in completely
To hole bottom to guarantee that 4 lower end surface of waveguide rod firmly withstands on the upper surface roadbase b.Then, the coupling on the boss of waveguide rod 4
Chorus emission sensor 1, as shown in figure 5, acoustic emission sensor 1 is finally connected to sound emission acquisition device 2 by shielding line
On, wait vehicle 6 to arrive.
It can be seen from Fig. 1 and Fig. 2 when vehicle 6 drives to detection section, load due to vehicle weight to road,
Damage can be generated inside roadbase b, along with generation acoustic emission phenomenon.Sound emission is propagated in roadbase b internal communication
It can be passed in acoustic emission sensor 1 along waveguide rod 4 when at waveguide rod 4, and then complete the sound emission acquisition of roadbase b；
Borehole plug 3 is the strong elasticities materials such as rubber, has " sound insulation " effect, therefore waveguide rod 4 will not receive the sound emission letter of road deck a
Number, i.e., the acoustic emission signal of acoustic emission sensor 1 collection roadbase b ensure that the unicity in acoustic emission signal source.It is logical
It crosses sound emission acquisition device 2 and analyzes acoustic emission signal, complete the acoustic emission detection of roadbase b.
Claims (6)
1. a kind of method using acoustic emission detection roadbase damage, it is characterised in that:
Road composition includes: road deck, roadbase and roadbase damage；
Detection device includes: acoustic emission sensor, sound emission acquisition device, borehole plug and waveguide rod；
The sound emission acquisition device and acoustic emission sensor are connected with shielding line, and acoustic emission sensor is coupled in waveguide rod
Boss surface, waveguide rod are filled in the inner hole of borehole plug, and borehole plug is filled in the hole on lane line, on the lane line
Hole is to drill to obtain by drilling machine, is only existed on road deck.
2. a kind of method using acoustic emission detection roadbase damage according to claim 1, it is characterised in that:
The roadbase is semi-rigid type base.
3. a kind of method using acoustic emission detection roadbase damage according to claim 1, it is characterised in that:
The material of the waveguide rod is mild steel, and diameter d is 16mm, and length is equal with the thickness L of road deck, and the upper end has
Cone boss；Cone boss height the h < 1/5*L, boss upper surface diameter D >=1.5*h+d of the waveguide rod.
4. a kind of method using acoustic emission detection roadbase damage according to claim 1, it is characterised in that:
The borehole plug is open circles tubulose, and 4/5 of height H less than waveguide pole length L is greater than the 2/3 of waveguide pole length L, drilling
The hole size of plug is less than the diameter d of waveguide rod, and outer diameter is determined according to the hole diameter on lane line, generally 100mm；Drilling
The material of plug is strong elasticity material.
5. a kind of method using acoustic emission detection roadbase damage according to claim 1, it is characterised in that:
The waveguide rod is tightly filled in borehole plug, the hole bottom on borehole plug fortress to lane line.
6. a kind of method using acoustic emission detection roadbase damage according to claim 1, it is characterised in that:
For the waveguide rod under the action of borehole plug, lower end surface firmly withstands on roadbase upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201359.9A CN106836170B (en) | 2017-03-30 | 2017-03-30 | A method of it is damaged using acoustic emission detection roadbase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201359.9A CN106836170B (en) | 2017-03-30 | 2017-03-30 | A method of it is damaged using acoustic emission detection roadbase |
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| Publication Number | Publication Date |
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| CN106836170A CN106836170A (en) | 2017-06-13 |
| CN106836170B true CN106836170B (en) | 2019-01-22 |
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| CN201710201359.9A Expired - Fee Related CN106836170B (en) | 2017-03-30 | 2017-03-30 | A method of it is damaged using acoustic emission detection roadbase |
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Families Citing this family (1)
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| CN107748392B (en) * | 2017-10-11 | 2020-08-28 | 中铁八局集团建筑工程有限公司 | Railway roadbed geological radar defect map analysis method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000258404A (en) * | 1999-03-08 | 2000-09-22 | Taiheiyo Cement Corp | Evaluation method for crack in material or in structure |
| JP2005181302A (en) * | 2003-11-25 | 2005-07-07 | Tokyo Electric Power Co Inc:The | Breakage detection method and detector for reinforcement in concrete structure |
| CN101975833B (en) * | 2010-05-25 | 2013-04-17 | 江西中烟工业有限责任公司 | Method for measuring main active ingredient paeonol of traditional Chinese medicinal additive in cigarettes |
| CN202083674U (en) * | 2011-04-14 | 2011-12-21 | 洛阳中创重型机械有限公司 | Large-scale thermal state casting and forging piece thermal treatment crack on-line detector |
| CN103323537B (en) * | 2013-06-01 | 2015-04-08 | 中国科学院武汉岩土力学研究所 | Coupling device for realizing acquisition of acoustic emission signals in triaxial pressure cell |
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