CN107142822B - A kind of roadbed cavity detection device and its detection method - Google Patents
A kind of roadbed cavity detection device and its detection method Download PDFInfo
- Publication number
- CN107142822B CN107142822B CN201710292858.3A CN201710292858A CN107142822B CN 107142822 B CN107142822 B CN 107142822B CN 201710292858 A CN201710292858 A CN 201710292858A CN 107142822 B CN107142822 B CN 107142822B
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- vibrating sensor
- roadbed
- guide rod
- detection device
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- 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 roadbed cavity detection device and its detection method, device includes: Shi Zhenqi, vibrating sensor and readout instrument；It is described apply vibration device and the vibrating sensor be individually positioned at two test points of distance to a declared goal on road surface；The readout instrument and the vibrating sensor, the speed data being connected for recording and reading the vibrating sensor, measurement；The vibration device of applying includes bottom plate, punching hammer, guide rod and top plate；The bottom plate is fixed on above a test point, and its center is located at the test point；The guide rod is welded on the center of the bottom plate vertically；The intermediate punching hammer is hollow, and is just passed through the guide rod；The top plate is fixedly mounted on the guide rod and is located at punching hammer top for controlling the hoisting depth of the punching hammer.The present invention has the advantages that structure is simple, easy to use and result is reliable.
Description
Technical field
The present invention relates to foundation construction field, in particular to it is a kind of for detect device that roadbed cavity whether there is and its
Detection method.
Background technique
The reason of municipal wastewater, storm sewer rupture are a kind of common disasters, generate rupture substantially has three: first is that with
The increase of Years Of Service, many pipelines enter ageing stage or have been more than service life, pipeline material aging and cause brokenly
It splits；Second is that a small number of pipelines are because the strength of materials is unqualified or construction method, backfilling material are improper, pipeline breaking after construction；Third is that 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,
It is constantly pulled away under sewage and rainwater effect, is that roadbed cavity occurs above pipeline.When certain scale is developed in cavity, road surface
Support is lost, road is easy to appear collapsing under Vehicle Load, and then leads to serious property loss and personal injury.By
It is located at road surface in roadbed cavity hereinafter, being difficult to look into not from the appearance.It is detected using instrument and equipment, identifies cavity ten
Divide necessity, roadbed cavity is handled in time, avoids accident.Roadbed cavity at present, generally using geological radar method and
High Density Resistivity is detected, but both methods belongs to indirect method, and there are certain False Rates, using other methods
Auxiliary detection is carried out, is mutually authenticated, it is very necessary to improve judging nicety rate.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, provides a kind of roadbed cavity detection device and its detection side
Method has the advantages that structure is simple, easy to use and result is reliable.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of roadbed cavity detection device, comprising: Shi Zhenqi, vibrating sensor and readout instrument；It is described to apply vibration device and described
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,
The speed data being connected for recording and reading the vibrating sensor, measurement；The vibration device of applying includes bottom plate, punching hammer, leads
Bar and top plate；The bottom plate is fixed on above a test point, and its center is located at the test point；The guide rod is welded on institute vertically
State the center of bottom plate；The intermediate punching hammer is hollow, and is just passed through the guide rod；The top plate is fixedly mounted on institute
It states on guide rod and is located at punching hammer top for controlling the hoisting depth of the punching hammer.
Preferably, the bottom plate is circle；The punching hammer is cylinder；The top plate is circle.
Preferably, the bottom plate, punching hammer, guide rod and top plate are steel material.
Preferably, 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
The distance of top plate lower part to plate top surface is 0.6m.
Preferably, the vibrating sensor is high sensor, for testing the speed in three directions of x, y, z, is surveyed
Amount range is 0.01cm/s~20cm/s, and resolution ratio 0.1cm/s, frequency range is 0~1000Hz.
Preferably, the vibrating sensor is bonded on road surface above a test point by the way that binder is fixed.
Preferably, the binder is quickly to solidify hydraulic binding agent.
Preferably, the distance between described two test points are 1.0m.
A kind of roadbed hole detection method, includes 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 fixation is bonded on a test point using binder, starts readout instrument, will vibrates
Sensor is set as state to be measured；
Step 3, Shi Zhenqi is placed on another test point, bottom plate center is located just on the test point, is improved
The punching for applying vibration 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 maximum speed v that readout instrument measures is readz,max；
Step 5, if vertical maximum speed 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, as follows:
Technical solution bring beneficial effect provided by the invention is
Roadbed cavity detection device of the invention, comprising: Shi Zhenqi, vibrating sensor and readout instrument；It is therein to apply vibration device
Road pavement apply vibration, manufacture vibration source, vibrating sensor be used for measure vibration vertical maximum speed, readout instrument to record with
Read the speed data of vibrating sensor measurement；The structure of apparatus of the present invention is simple, easy to use, result is reliable.
Invention is further described in detail with reference to the accompanying drawings and embodiments, but a kind of roadbed cavity inspection of the invention
It surveys device and its detection method is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Appended drawing reference: 1, bottom plate, 2, guide rod, 3, punching hammer, 4, top plate, 5, vibrating sensor, 6, readout instrument.
Specific embodiment
It is shown in Figure 1, a kind of roadbed cavity detection device, including Shi Zhenqi, 5 readout instrument 6 of vibrating sensor.Wherein,
Apply vibration device to be made 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 are welded on the center of bottom plate 1 vertically, and punching hammer 3 is cylindrical, centre be it is hollow, be just passed through guide rod 2,
It is 10kg that punching, which hammers 3 weight into shape, and 2 length of guide rod is 0.8m, and 2 diameter of guide rod is about 1.0cm, to control punching hammer 3 in vertical side
Upward freely falling body；Top plate 4 is also rounded, is fixedly mounted on guide rod 2, and the distance of 4 lower part of top plate to 1 top surface of bottom plate is
0.6m, the height that top plate 4 is promoted to control punching hammer 3.The preferred high sensor of vibrating sensor 5, can test 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.Binder is quickly to solidify hydraulic binding agent, the fixation of vibrating sensor 5 is bonded in road
On face.Speed data of the readout instrument 6 to record and read the measurement of vibrating sensor 5.
When specifically used, sequentially include the following steps:
(1) two test points are made on the suspicious road surface in cavity, distance is 1.0m；
(2) sensor fixation is bonded on a test point using binder, starts readout instrument 6, sensor is arranged
For state to be measured；
(3) Shi Zhenqi is placed on another test point, 1 center of bottom plate is located just on the test point, and vibration is applied in raising
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 maximum speed v that readout instrument 6 measures is readz,max；
(5) if vertical maximum speed 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, that is,
The following is a specific practical measuring examples: certain urban road lower part is embedded with sewage conduct, and pipeline is double-wall corrugated pvc pipe
Road, caliber 1800mm, buried depth of pipeline are 4.2m~6.3m (in terms of bottom of the tube inside wall height), due to construction wrong and are on active service year
The reasons such as remote are limited, many places rupture occurs in pipeline, causes inside earthing body flow ipe, causes roadbed empty, occurs multiple
Road surface collapses.Road surface is cement concrete material, and thickness is about 40cm, and lower part is blotter, and thickness is about 40cm.In order to examine
Roadbed cavity is surveyed, roadbed cavity is detected using above-mentioned apparatus of the 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 binder, is started readout instrument, is set state to be measured for sensor；
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 lower part；Read the vertical maximum speed v of readout instrument recordz,max=3.74m/s has been more than that the road surface is corresponding
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 is less than [vz]=2.5m/s is determined as that there is no cavities；Position is detected at third
vz,max=1.12m/s, similarly less than [vz]=2.5m/s is determined as that there is no cavities.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of roadbed cavity detection device characterized by comprising Shi Zhenqi, vibrating sensor (5) and readout instrument (6)；Institute
State apply vibration device and the vibrating sensor (5) be individually positioned at two test points of distance to a declared goal on road surface；The readout instrument
(6) speed data being connected with the vibrating sensor (5) for recording and reading the vibrating sensor (5) measurement；It is described
Applying vibration device 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
Its center is 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 is located at described wear
For controlling the hoisting depth of the punching hammer (3) above heart hammer (3)；
The vibrating sensor (5) is used to test the speed in three directions of x, y, z；Read the vertical maximum speed that readout instrument measures
vz,max；If vertical maximum speed vz,maxMore than or equal to a certain decision content [vz], then it is determined to have cavity, is otherwise determined as not having
Cavity.
2. roadbed cavity according to claim 1 detection device, which is characterized in that the bottom plate (1) is circle；It is described to wear
It is cylinder that the heart, which hammers (3) into shape,；The top plate (4) is circle.
3. roadbed cavity according to claim 1 detection device, which is characterized in that the bottom plate (1), is led at punching hammer (3)
Bar (2) and top plate (4) are steel material.
4. roadbed cavity according to claim 1 detection device, which is characterized in that the weight of punching hammer (3) is
10kg；The length of the guide rod (2) is 0.8m, and diameter is about 1.0cm；The distance of top plate (4) lower part to bottom plate (1) top surface
For 0.6m.
5. roadbed cavity according to claim 1 detection device, which is characterized in that the vibrating sensor (5) is Gao Ling
Sensitivity sensor, measurement range are 0.01cm/s~20cm/s, and resolution ratio 0.1cm/s, frequency range is 0~1000Hz.
6. roadbed cavity according to claim 1 detection device, which is characterized in that the vibrating sensor (5) passes through viscous
Knot agent is fixed to be bonded on road surface above a test point.
7. roadbed cavity according to claim 6 detection device, which is characterized in that the binder is that quickly solidification is rigid
Binder.
8. roadbed cavity according to claim 1 detection device, which is characterized in that the distance between described two test points
For 1.0m.
9. a kind of roadbed hole detection method, which comprises the steps of:
Step 1, two test points are made on the suspicious road surface in cavity, distance is 1.0m；
Step 2, vibrating sensor fixation is bonded on a test point using binder, starts readout instrument, by vibrating sensing
Device is set as state to be measured；
Step 3, Shi Zhenqi is placed on another test point, bottom plate center is located just on the test point, and vibration is applied in raising
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 maximum speed v that readout instrument measures is readz,max；
Step 5, if vertical maximum speed vz,maxMore than or equal to a certain decision content [vz], then it is determined to have cavity, otherwise determines
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107142822A CN107142822A (en) | 2017-09-08 |
| CN107142822B true CN107142822B (en) | 2019-08-06 |
Family
ID=59774052
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107142822B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109255504B (en) * | 2018-11-16 | 2021-04-27 | 福建工程学院 | Prediction method for roadbed cavity formation range induced by municipal pipeline hole breaking |
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 | Impact echo firing and collecting device |
-
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 | Impact echo firing and collecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107142822A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104631519B (en) | Pile foundation bearer properties model test apparatus and test method under complicated loads | |
| KR102051904B1 (en) | The Module Device for Sensing a Soil Settlement in Civil Engineering and Building Structures and Controlling Method for the Same | |
| CN106638719B (en) | Bored pile piling quality automatic monitoring controller and method | |
| CN105735375B (en) | Method and system for monitoring stability of loess tunnel bottom and construction method | |
| CN101581701A (en) | Method for detecting slip casting effect on ground surface | |
| CN108661091B (en) | Timely testing device and testing method for deep load test | |
| Lehtonen et al. | Full-scale embankment failure test under simulated train loading | |
| CN107142822B (en) | A kind of roadbed cavity detection device and its detection method | |
| US7832274B1 (en) | System and method for pneumatic scour detection | |
| JP2011231568A (en) | Pore water pressure measuring device, soft ground improvement method using the same, method for determining dynamic state of ground for underground installation, and method for determining dynamic state of ground for banking structure installation | |
| CN111287228A (en) | Self-balancing method for detecting vertical compression static load and negative frictional resistance of single pile | |
| CN106643649B (en) | Device and method for measuring deep settlement and pore water pressure of soil body | |
| CN108487336B (en) | Geotechnical engineering pile foundation quality detection method | |
| CN102645198B (en) | Detection method and device for dynamic consolidation foundation material displacement | |
| CN112187843A (en) | BIM-based system and method for automatically monitoring capital construction risks of deep foundation pit | |
| CN109765260A (en) | Frost heave monomer, detection device and its detection method of flexible non-contact formula detection soil | |
| Rinehart et al. | Measurement of roller compactor induced triaxial soil stresses and strains | |
| CN113720995B (en) | Centrifugal test device for reinforcing influence of side pit excavation on circumference of existing tunnel | |
| CN210604213U (en) | Railway rockfill embankment shear test device | |
| CN110306606B (en) | Pile foundation quality monitoring method and device for construction process | |
| CN110219297B (en) | Real-time measuring device for soil thickness | |
| CN108489814B (en) | Coefficient of static lateral soil pressure K 0 In-situ testing device and testing method | |
| CN1323300C (en) | Harmless measuring method and device for analyzing and determining underground pile penetration length | |
| Gunasekara Jayalath et al. | A laboratory method for accurate calibration of strain-gauge type soil pressure transducers | |
| CN111827375A (en) | Construction method for detecting foundation pile load based on self-balancing static load |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |