CN107142822A - A kind of empty detection means of roadbed and its detection method - Google Patents
A kind of empty detection means of roadbed and its detection method Download PDFInfo
- Publication number
- CN107142822A CN107142822A CN201710292858.3A CN201710292858A CN107142822A CN 107142822 A CN107142822 A CN 107142822A CN 201710292858 A CN201710292858 A CN 201710292858A CN 107142822 A CN107142822 A CN 107142822A
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- China
- Prior art keywords
- bottom plate
- vibrating sensor
- detection means
- guide rod
- roadbed
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
-
- 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
- E02D1/08—Investigation of foundation soil in situ after finishing the foundation structure
-
- 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)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Paleontology (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of empty detection means of roadbed and its detection method, device includes：Apply the device that shakes, vibrating sensor and readout instrument；Described apply shakes device and the vibrating sensor is individually positioned at two test points of distance to a declared goal on road surface；The readout instrument and the vibrating sensor, be connected for record and read the vibrating sensor, measurement speed data；The device that shakes of applying includes bottom plate, punching hammer, guide rod and top plate；The bottom plate is fixed on above a test point, and it is centrally located at the test point；The guide rod is welded on the center of the bottom plate vertically；It is hollow in the middle of the punching hammer, and is just passed through the guide rod；The top plate is fixedly mounted on the guide rod and hammers the hoisting depth that top is used to control the punching hammer into shape positioned at the punching.The present invention has the advantages that simple in construction, easy to use and reliable results.
Description
Technical field
The present invention relates to foundation construction field, specifically refer to it is a kind of be used to detecting device that roadbed cavity whether there is and its
Detection method.
Background technology
Municipal wastewater, storm sewer rupture are a kind of common disasters, and the reason for producing rupture substantially has three：One be with
The increase of Years Of Service, many pipelines enter the aging stage or have exceeded service life, pipeline material aging and cause brokenly
Split；Two be a small number of pipelines because the strength of materials is unqualified, or construction method, backfilling material are improper, pipeline breaking after construction；Three are ground
Base Non-uniform Settlement, causes pipeline drawing crack to destroy.After pipeline breaking, the backfill soil body and subgrade soil of top enter pipeline,
Constantly it is pulled away under sewage and rainwater effect, pipeline top is that roadbed cavity occurs.When certain scale is developed into cavity, road surface
Support is lost, road easily caves under Vehicle Load, and then cause serious property loss and personal injury.By
It is located in roadbed cavity below road surface, from being difficult to look into appearance not.It is detected using instrument and equipment, cavity ten is identified
Divide necessity, roadbed cavity is handled in time, it is to avoid accident occurs.Current roadbed cavity, it is general using geological radar method and
High Density Resistivity is detected, but both approaches belong to indirect method, there is certain False Rate, using other methods
Auxiliary detection is carried out, is mutually authenticated, judging nicety rate is improved very necessary.
The content of the invention
It is an object of the invention to the deficiency for overcoming prior art, there is provided a kind of empty detection means of roadbed and its detection side
Method, has the advantages that simple in construction, easy to use and reliable results.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of empty detection means of roadbed, including：Apply the device that shakes, vibrating sensor and readout instrument；It is described to apply the device and described of shaking
Vibrating sensor is individually positioned at two test points of distance to a declared goal on road surface；The readout instrument and the vibrating sensor,
It is connected for the speed data for recording and reading the vibrating sensor, measure；The device that shakes of applying is hammered into shape including bottom plate, punching, led
Bar and top plate；The bottom plate is fixed on above a test point, and it is centrally located at the test point；The guide rod is welded on institute vertically
State the center of bottom plate；It is hollow in the middle of the punching hammer, and is just passed through the guide rod；The top plate is fixedly mounted on institute
State on guide rod and hammer the hoisting depth that top is used to control the punching hammer into shape positioned at the punching.
It is preferred that, the bottom plate is circle；The punching hammer is cylinder；The top plate is circle.
It is preferred that, the bottom plate, punching hammer, guide rod and top plate are steel material.
It is preferred that, the weight of the punching hammer is 10kg；The length of the guide rod is 0.8m, and diameter is about 1.0cm；It is described
Top plate bottom to the distance of plate top surface is 0.6m.
It is preferred that, the vibrating sensor is high sensor, and the speed for testing three directions of x, y, z is surveyed
Amount scope is 0.01cm/s~20cm/s, and resolution ratio is 0.1cm/s, and frequency range is 0~1000Hz.
It is preferred that, the vibrating sensor is fixed by binding agent to be bonded on road surface above a test point.
It is preferred that, the binding agent is rapid solidification hydraulic binding agent.
It is preferred that, the distance between described two test points are 1.0m.
A kind of roadbed hole detection method, comprises the following steps：
Step 1, two test points are made on the suspicious road surface in cavity, distance is 1.0m；
Step 2, vibrating sensor is fixed using binding agent and be bonded on a test point, started readout instrument, will vibrate
Sensor is set to state to be measured；
Step 3, Shi Zhenqi is placed on another test point, its bottom plate center is located just on the test point, improved
The punching for applying the device that shakes is hammered into shape to maximum height, and letting go makes its freely falling body, hammers bottom plate, and road pavement applies vibration, manufactures vibration source；
Step 4, the vertical maximal rate v that readout instrument is measured is readz,max；
Step 5, if vertical maximal rate vz,maxMore than or equal to a certain decision content [vz], then it is determined to have cavity, otherwise
It is determined as without cavity, it is as follows：
The beneficial effect that the technical scheme that the present invention is provided is brought is
The empty detection means of the roadbed of the present invention, including：Apply the device that shakes, vibrating sensor and readout instrument；It is therein to apply the device that shakes
Road pavement applies vibration, manufactures vibration source, and vibrating sensor is used for the vertical maximal rate for measuring vibration, readout instrument recording and
Read the speed data of vibrating sensor measurement；The simple in construction, easy to use of apparatus of the present invention, reliable results.
The present invention is described in further detail below in conjunction with drawings and Examples, but a kind of roadbed cavity inspection of the present invention
Survey device and its detection method is not limited to embodiment.
Brief description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Reference：1st, bottom plate, 2, guide rod, 3, punching hammer, 4, top plate, 5, vibrating sensor, 6, readout instrument.
Embodiment
It is shown in Figure 1, a kind of empty detection means of roadbed, including Shi Zhenqi, the readout instrument 6 of vibrating sensor 5.Wherein,
Apply the device that shakes to be made up of steel, including bottom plate 1, punching hammer 3, guide rod 2 and top plate 4, bottom plate 1 is circle, with certain thickness and
Rigidity, guide rod 2 is welded on the center of bottom plate 1 vertically, and punching hammer 3 is hollow in cylinder, centre, is just passed through guide rod 2,
It is 10kg that punching, which hammers 3 weight into shape, and the length of guide rod 2 is 0.8m, and the diameter of guide rod 2 is about 1.0cm, to control punching to hammer 3 into shape in vertical side
Upward freely falling body；Top plate 4 is also rounded, is fixedly mounted on guide rod 2, and the bottom of top plate 4 to the distance of the top surface of bottom plate 1 is
0.6m, top plate 4 is to control punching to hammer the height of 3 liftings into shape.The preferred high sensor of vibrating sensor 5, can be tested out
The speed in three directions of x, y, z, measurement range can reach 0.01cm/s~20cm/s, and resolution ratio reaches 0.1cm/s, frequency model
0~1000Hz can be reached by enclosing.Binding agent is rapid solidification hydraulic binding agent, and road is bonded in vibrating sensor 5 to be fixed
On face.Speed data of the readout instrument 6 to record and read the measurement of vibrating sensor 5.
When specifically used, carry out according to the following steps：
(1) two test points are made on the suspicious road surface in cavity, distance is 1.0m；
(2) sensor is fixed using binding agent and be bonded on a test point, started readout instrument 6, sensor is set
For state to be measured；
(3) Shi Zhenqi is placed on another test point, the center of bottom plate 1 is located just on the test point, raising, which is applied, shakes
At punching hammer 3 to the maximum height of device, letting go makes its freely falling body, hammers bottom plate 1, and road pavement applies vibration, manufactures vibration source；
(4) the vertical maximal rate v that readout instrument 6 is measured is readz,max；
(5) if vertical maximal rate is more than or equal to a certain decision content [vz], then it is determined to have cavity, is otherwise determined as not having
There is cavity, i.e.
It the following is a specific practical measuring examples：Certain urban road bottom is embedded with sewage conduct, and pipeline is double-wall corrugated pvc pipe
Road, caliber is 1800mm, and buried depth of pipeline is 4.2m~6.3m (in terms of bottom of the tube inside wall height), due to construction wrong and military service year
The reason such as remote is limited, pipeline many places rupture occurs, caused inside overlying soil body flow ipe, cause roadbed cavity, occurred multiple
Road surface is collapsed.Road surface is cement concrete material, and thickness is about 40cm, and bottom is blotter, and thickness is about 40cm.In order to examine
Roadbed cavity is surveyed, roadbed cavity is detected using the said apparatus of the present invention.
Two test points are made on road surface first, test point distance is 1.0m, is made a mark with red paint；Then will
Vibrating sensor is fixed at a test point on road surface with binding agent, starts readout instrument, sensor is set into state to be measured；
Shi Zhenqi is placed on another test point, punching is improved and hammers into shape to maximum height, is let go so that punching hammers freely falling body, hammer into shape
Hit bottom plate and the road surface of bottom；Read the vertical maximal rate v of readout instrument recordz,max=3.74m/s, has exceeded road surface correspondence
Decision content [vz]=2.5m/s, therefore, it is determined that there is cavity under the road surface.Another place is carried out using the device and this method
Measurement, measures vz,max=1.04m/s, less than [vz]=2.5m/s, is judged to that cavity is not present；Test position at 3rd
vz,max=1.12m/s, is similarly less than [vz]=2.5m/s, is judged to that cavity is not present.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. a kind of empty detection means of roadbed, it is characterised in that including：Apply the device that shakes, vibrating sensor (5) and readout instrument (6)；Institute
State to apply and shake device and the vibrating sensor (5) is individually positioned at two test points of distance to a declared goal on road surface；The readout instrument
(6) it is connected with the vibrating sensor (5) for the speed data for recording and reading the vibrating sensor (5) measurement；It is described
Applying the device that shakes includes bottom plate (1), punching hammer (3), guide rod (2) and top plate (4)；The bottom plate (1) is fixed on above a test point, and
It is centrally located at the test point；The guide rod (2) is welded on the center of the bottom plate (1) vertically；In the punching hammer (3)
Between be hollow, and be just passed through the guide rod (2)；The top plate (4) is fixedly mounted on the guide rod (2) and worn positioned at described
It is used for the hoisting depth for controlling the punching hammer (3) above heart hammer (3).
2. the empty detection means of roadbed according to claim 1, it is characterised in that the bottom plate (1) is circle；It is described to wear
Heart hammer (3) is cylinder；The top plate (4) is circle.
3. the empty detection means of roadbed according to claim 1, it is characterised in that the bottom plate (1), punching are hammered (3) into shape, led
Bar (2) and top plate (4) are steel material.
4. the empty detection means of roadbed according to claim 1, it is characterised in that the weight of the punching hammer (3) is
10kg；The length of the guide rod (2) is 0.8m, and diameter is about 1.0cm；Top plate (4) bottom to bottom plate (1) top surface distance
For 0.6m.
5. the empty detection means of roadbed according to claim 1, it is characterised in that the vibrating sensor (5) is Gao Ling
Sensitivity sensor, the speed for testing three directions of x, y, z, measurement range is 0.01cm/s~20cm/s, and resolution ratio is
0.1cm/s, frequency range is 0~1000Hz.
6. the empty detection means of roadbed according to claim 1, it is characterised in that the vibrating sensor (5) passes through viscous
Knot agent, which is fixed, to be bonded on road surface above a test point.
7. the empty detection means of roadbed according to claim 6, it is characterised in that the binding agent is rapid solidification hardness
Binding agent.
8. the empty detection means of roadbed according to claim 1, it is characterised in that the distance between described two test points
For 1.0m.
9. a kind of roadbed hole detection method, it is characterised in that comprise the following steps：
Step 1, two test points are made on the suspicious road surface in cavity, distance is 1.0m；
Step 2, vibrating sensor is fixed using binding agent and be bonded on a test point, start readout instrument, by vibrating sensing
Device is set to state to be measured；
Step 3, Shi Zhenqi is placed on another test point, its bottom plate center is located just on the test point, raising, which is applied, shakes
The punching of device is hammered into shape to maximum height, and letting go makes its freely falling body, hammers bottom plate, and road pavement applies vibration, manufactures vibration source；
Step 4, the vertical maximal rate v that readout instrument is measured is readz,max；
Step 5, if vertical maximal rate vz,maxMore than or equal to a certain decision content [vz], then it is determined to have cavity, otherwise judges
It is as follows for no cavity：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292858.3A CN107142822B (en) | 2017-04-28 | 2017-04-28 | A kind of roadbed cavity detection device and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292858.3A CN107142822B (en) | 2017-04-28 | 2017-04-28 | A kind of roadbed cavity detection device and its detection method |
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| Publication Number | Publication Date |
|---|---|
| CN107142822A true CN107142822A (en) | 2017-09-08 |
| CN107142822B CN107142822B (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710292858.3A Active CN107142822B (en) | 2017-04-28 | 2017-04-28 | A kind of roadbed cavity detection device and its detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255504A (en) * | 2018-11-16 | 2019-01-22 | 福建工程学院 | Municipal pipeline broken hole induces the prediction technique that roadbed cavity forms range |
| CN109271752A (en) * | 2018-11-16 | 2019-01-25 | 福建工程学院 | Municipal pipeline breakage induces the prediction technique that roadbed cavity forms the time |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953313A (en) * | 2012-10-26 | 2013-03-06 | 中国水电建设集团路桥工程有限公司 | Method for monitoring graded broken stone segregation |
| CN203606327U (en) * | 2013-11-30 | 2014-05-21 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Combined vibration exciter for testing by impact echoes |
| CN204439598U (en) * | 2015-03-24 | 2015-07-01 | 南京工业大学 | A kind of impact echo percussion and harvester |
-
2017
- 2017-04-28 CN CN201710292858.3A patent/CN107142822B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953313A (en) * | 2012-10-26 | 2013-03-06 | 中国水电建设集团路桥工程有限公司 | Method for monitoring graded broken stone segregation |
| CN203606327U (en) * | 2013-11-30 | 2014-05-21 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Combined vibration exciter for testing by impact echoes |
| CN204439598U (en) * | 2015-03-24 | 2015-07-01 | 南京工业大学 | A kind of impact echo percussion and harvester |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255504A (en) * | 2018-11-16 | 2019-01-22 | 福建工程学院 | Municipal pipeline broken hole induces the prediction technique that roadbed cavity forms range |
| CN109271752A (en) * | 2018-11-16 | 2019-01-25 | 福建工程学院 | Municipal pipeline breakage induces the prediction technique that roadbed cavity forms the time |
| CN109271752B (en) * | 2018-11-16 | 2022-06-21 | 福建工程学院 | Prediction method for municipal pipeline damage-induced roadbed cavity formation time |
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| Publication number | Publication date |
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| CN107142822B (en) | 2019-08-06 |
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