CN203616311U - Device for detecting compaction effect of road surface - Google Patents
Device for detecting compaction effect of road surface Download PDFInfo
- Publication number
- CN203616311U CN203616311U CN201320704912.8U CN201320704912U CN203616311U CN 203616311 U CN203616311 U CN 203616311U CN 201320704912 U CN201320704912 U CN 201320704912U CN 203616311 U CN203616311 U CN 203616311U
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- CN
- China
- Prior art keywords
- bragg grating
- road surface
- fiber bragg
- fbg
- demodulator
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Abstract
A device for detecting the compaction effect of a road surface comprises a fiber Bragg grating demodulation instrument, a pressure sensor used for measuring the pressure of the road surface and a displacement sensor used for measuring the thickness of the road surface, wherein both the pressure sensor and the displacement sensor are connected with the fiber Bragg grating demodulation instrument. The device is simple in principle, convenient to operate, accurate and fast in testing, capable of objectively and efficiently performing detection, good in detection reliability, low in manufacturing cost, low in energy consumption, wide in application range, high in practical value and convenient to use and maintain.
Description
Technical field
The utility model belongs to Road Detection and technical field of construction, is specifically related to a kind of device that detects pavement compaction effect.
Background technology
It is core boring sampling that China's compactness of pavement detects conventional method, then measures core density according to Experimental Standardization, with the ratio of mensuration density and theoretical maximum density be that compactness represents.Detect road surface thickness with core drilling method and destroyed original pavement structure, although the boring producing after core boring sampling can be filled up with compound of the same race, the road surface infringement that bore position produces remains road surface and very easily produces the weak link of disease.And it is slower to bore core detection speed, after open to traffic, easily produce danger, core boring sampling method is that one damages detection, and only after compacting completes, bore core and detect, can not in compacting process, detect in real time and carry out compacting control, length expends time in, operating process complexity, is subject to ectocine large.
Utility model content
The purpose of this utility model is to provide a kind of device that detects pavement compaction effect, can detect quickly and easily pavement compaction effect.
For achieving the above object, the utility model is achieved by the following technical solutions.
Detect a device for pavement compaction effect, comprise fiber Bragg grating (FBG) demodulator, for measuring the pressure transducer of road surface pressure and for measuring the displacement transducer of road surface thickness, described pressure transducer, displacement transducer are all connected with fiber Bragg grating (FBG) demodulator.
Between described pressure transducer and fiber Bragg grating (FBG) demodulator, be all connected by cable between displacement transducer and fiber Bragg grating (FBG) demodulator.
Described pressure transducer is disc type pressure transducer.
Described fiber Bragg grating (FBG) demodulator is with display screen, and in fiber Bragg grating (FBG) demodulator, is provided with RAM (random access memory) card.
The beneficial effect the utlity model has: the present invention measures by pressure transducer road pavement pressure is set, displacement transducer road pavement thickness is set to be measured, pressure transducer, displacement transducer are all connected with fiber Bragg grating (FBG) demodulator, realize the detection of road pavement consolidation effect, this pick-up unit principle is simple, easy to operate, test accurately, fast, can realize objective, high efficient detection; This pick-up unit cost is low, and detecting reliability is good, except the consolidation effect for detection of bituminous pavement, can apply to the detection of various types of pavement constructions, and easy to maintenance.
Further, fiber Bragg grating (FBG) demodulator is with display screen, and the data in demonstration compacting process that can be real-time, realize the monitoring and evaluation to on-the-spot consolidation effect, can also monitor out the problem existing in compacting process in time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device;
Wherein: 1 is pressure transducer; 2 is displacement transducer; 3 is cable; 4 is fiber Bragg grating (FBG) demodulator; 5 is RAM (random access memory) card.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, pavement compaction effect detection device of the present utility model, comprise pressure transducer 1 for measuring road surface pressure, for measuring displacement transducer 2 and the fiber Bragg grating (FBG) demodulator 4 of road surface thickness, described pressure transducer 1, displacement transducer 2 are all connected by cable 3 with fiber Bragg grating (FBG) demodulator 4; Wherein, the pressure transducer 1 in the utility model is disc type pressure transducer 1, its effect be draw after pavement spread completes and in compacting process and compacting complete after dynamic pressure F; The effect of cable 3 is the bridges that transmit as data between disc type pressure transducer 1, displacement transducer 2 and fiber Bragg grating (FBG) demodulator 4; The effect of displacement transducer 2 is compacted depthes of measuring after completing with compacting in compacting process, i.e. the reduction h of pavement spread thickness; The effect of RAM (random access memory) card 5 is data storages that fiber Bragg grating (FBG) demodulator 4 is transmitted, and can be connected to robot calculator and carry out data processing and analysis; The effect of fiber Bragg grating (FBG) demodulator 4 is that dynamic pressure F measured disc type pressure transducer 1 and the measured compacted depth h of displacement transducer 4 are collected and deposit in RAM (random access memory) card 5.
The method of the detection pavement compaction effect based on said apparatus, comprises the following steps:
1. with the finite element software on robot calculator (ansys software), can be before construction, set up finite element model according to the elastic modulus on road surface, Poisson ratio, length, thickness and width design parameter, calculate in the time that roadbed end face is provided with disc type pressure transducer 1, disc type pressure transducer is produced the road surface plane coverage S of pressure after having paved;
2. record the density p that paves of asphalt paving compound according to the T0705-2000 compacting asphalt mixture density experiment (surface drying method) clearly stipulating in " E06JTJ052-2000 highway engineering pitch and Asphalt Mixture Experiment rules ";
3. according to " JTGE42-2004 standard specification for construction and acceptance of highway asphalt pavement " regulation, every 1Km selects 5 measuring points, and each measuring point is laid respectively disc type pressure transducer 1 and displacement transducer 2;
4. obtain by fiber Bragg grating (FBG) demodulator 4 the road surface pressure F after pavement spread completes that disc type pressure transducer 1 records
0, according to formula
calculate paving thickness H, (wherein g is acceleration of gravity), then calculates the mean value of paving thickness H, obtains the average paving thickness on road surface
The detection data of 5. collecting the each measuring point disc type pressure transducer 1 of statistics and displacement transducer 2 by fiber Bragg grating (FBG) demodulator 4, calculate the mean value of laying measuring point actual measurement compacted depth h
and the mean value of the dynamic pressure F of multiple measuring points of surveying in each compacting process
due to the final thickness H on road surface
0after completing, design just determines, so the compacted depth h needing
0computing formula be
then by the compacted depth h of needs
0compacted depth mean value with actual measurement
contrast; Simultaneously according to the mean value of the dynamic pressure of multiple measuring points of surveying in each compacting process
the pressure f contrast of the roller needing with road surface, judges whether each compacting reaches qualified, thereby realizes the detection of road pavement consolidation effect.
Judge whether each compacting reaches qualified concrete grammar and be: by the mean value of dynamic pressure
the pressure f contrast of the roller needing with road surface: when actual measurement compacted depth mean value
be equal to, or greater than theoretical compacted depth h
094%, and the mean value of dynamic pressure
equal the pressure f of roller or the mean value of dynamic pressure
be decided to be qualifiedly in rational scope with the difference of the pressure f of roller, be specially highway and Class I highway, actual pressure value
reach 94% of roller theoretical pressure f; To other standard highways, actual pressure
reach 92% of roller theoretical pressure f, be decided to be compacting qualified; Otherwise it is defective to be decided to be compacting.
A kind of pavement compaction effect detection principle of device that the utility model provides is simple, easy and simple to handle, test accurately, fast, can realize quick, objective, accurate, high efficient detection, the detection of testing apparatus and the manufacturing expense of instrument are not high, can also be used for on-the-spot consolidation effect monitoring and evaluation simultaneously, can monitor out the problem existing in compacting process in time, and data can be preserved the foundation as theoretical research.The utility model pick-up unit use, easy to maintenance, and this device reliability is good, outside the consolidation effect to the detection method of consolidation effect for detection of bituminous pavement, can apply to the detection of various types of pavement constructions, is conducive to apply.
Claims (4)
1. one kind is detected the device of pavement compaction effect, it is characterized in that, comprise fiber Bragg grating (FBG) demodulator (4), for measuring the pressure transducer (1) of road surface pressure and for measuring the displacement transducer (2) of road surface thickness, described pressure transducer (1), displacement transducer (2) are all connected with fiber Bragg grating (FBG) demodulator (4).
2. a kind of device that detects pavement compaction effect according to claim 1, it is characterized in that, between described pressure transducer (1) and fiber Bragg grating (FBG) demodulator (4), be all connected by cable (3) between displacement transducer (2) and fiber Bragg grating (FBG) demodulator (4).
3. the device of detection pavement compaction effect according to claim 1 and 2, is characterized in that, described pressure transducer (1) is disc type pressure transducer.
4. a kind of device that detects pavement compaction effect according to claim 1, is characterized in that, described fiber Bragg grating (FBG) demodulator (4) is with display screen, and in fiber Bragg grating (FBG) demodulator (4), is provided with RAM (random access memory) card (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704912.8U CN203616311U (en) | 2013-11-07 | 2013-11-07 | Device for detecting compaction effect of road surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704912.8U CN203616311U (en) | 2013-11-07 | 2013-11-07 | Device for detecting compaction effect of road surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616311U true CN203616311U (en) | 2014-05-28 |
Family
ID=50768944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320704912.8U Expired - Fee Related CN203616311U (en) | 2013-11-07 | 2013-11-07 | Device for detecting compaction effect of road surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203616311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592428A (en) * | 2013-11-07 | 2014-02-19 | 长安大学 | Device and method for detecting road surface compaction effect |
| CN109667212A (en) * | 2017-07-06 | 2019-04-23 | 河海大学 | A kind of measurement method of bituminous pavement paving compacted thickness |
-
2013
- 2013-11-07 CN CN201320704912.8U patent/CN203616311U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592428A (en) * | 2013-11-07 | 2014-02-19 | 长安大学 | Device and method for detecting road surface compaction effect |
| CN103592428B (en) * | 2013-11-07 | 2015-08-19 | 长安大学 | A kind of apparatus and method detecting road surface compaction effect |
| CN109667212A (en) * | 2017-07-06 | 2019-04-23 | 河海大学 | A kind of measurement method of bituminous pavement paving compacted thickness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20161107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |