CN203334166U - Pavement subgrade rebound deflection measuring system - Google Patents
Pavement subgrade rebound deflection measuring system Download PDFInfo
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- CN203334166U CN203334166U CN2013204082798U CN201320408279U CN203334166U CN 203334166 U CN203334166 U CN 203334166U CN 2013204082798 U CN2013204082798 U CN 2013204082798U CN 201320408279 U CN201320408279 U CN 201320408279U CN 203334166 U CN203334166 U CN 203334166U
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- measuring system
- road surface
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- displacement transducer
- deflection measuring
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Abstract
The utility model provides a pavement subgrade rebound deflection measuring system which comprises a deflection inspection van and a testing beam fixed to a pavement through a supporting point, wherein the front arm of the testing arm corresponds to the deflection inspection van. The pavement subgrade rebound deflection measuring system is characterized by further comprising a displacement sensor and a controller capable of reading and storing data, wherein the rear arm of the testing beam is connected with a data acquisition end of the displacement sensor, and a signal output end of the displacement sensor is connected with the input end of the controller. By the adoption of the displacement sensor and the controller, the pavement subgrade rebound deflection measuring system has the advantages that the displacement sensor is in communication connection with the controller, and therefore the measuring system can automatically collect data, guarantee timeliness, multipoint continuity and integrality of the data, and eliminate personal errors.
Description
Technical field
The utility model relates to a kind of measuring system, especially a kind of road surface roadbed rebound deflection measuring system.
Background technology
Along with increasing considerably of transportation and communication large-tonnage, large car and the magnitude of traffic flow makes the existing highway traffic, be difficult to adapt to this present situation, highway communication could have been put in face of highway divisions at different levels for community service better as He Jianshe, maintenance so.From highway construction situation in recent years, the grade that mainly take to be widened on the basis of original route, reinforcement reconstruction and overhaul improves highway with this increases the traffic capacity.New in Strengthening Design, old pavement deflection value is strengthening course structure design and the important indicator of estimating old pavement intensity.
Deflection value is that before and after vehicular load acts on roadbed/road surface, the size of rebound deformation occurs on roadbed/road surface.Before highway rebuilding, the origin road is carried out to the flexure measurement, can understand the road conditions of the origin road, and as the data that instructs designed; During highway is built or after being completed, the flexure measurement can check the construction on roadbed/road surface whether to reach the design strength requirement.Deflection value is exactly the bulk strength that has reflected on the whole each level of road surface.If deflection value is excessive, its distortion is also just larger, and each layer of road surface also just easily cracking destruction occurs under the vehicle effect.
Deflection value not only reflects bulk strength and the rigidity of each deck of road surface and soil matrix, and has certain inner link with the use state on road surface.Therefore before completion of works, deflection value, as an important detection index, has reflected the bulk strength quality on road surface.As can be seen here, understand pavement deflection Changing Pattern, correctly test pavement deflection, correct evaluation pavement quality is had to extremely important effect.
At present, the measuring method of backman beam mensuration road surface roadbed rebound deflection mainly adopts the mechanical displacement test device method.Mechanical displacement test device is measured road surface roadbed rebound deflection value with the mechanical displacement meter of dial gage by backman beam usually, and the method is easy to install and use, and reading is directly perceived.But because the collecting method that this assay method adopts is comparatively special, after being and starting test, the flexure inspection vehicle slowly advances, and the dial gage reading continues rotation forward with the increase of road surface rebound deformation.When indicator turns to maximum value, read rapidly initial reading, automobile is still moving on, and the indicator reversed turning, after the indicator gyrostabilized platform, reads final reading again.Because the data of using the method to obtain are one point datas, and need the observation personnel manually to read rapidly at short notice indicator registration and record, the method has greatly increased the human error risk, cause institute's determination data inaccurate, simultaneously due to the desired data collection is not possessed to continuity and integrality, can not gather a plurality of measuring points simultaneously, also just can't accurately judge by the size of a single-point deflection value around it bulk strength of road surface/roadbed and the size of rigidity in scope.
Above-mentioned visible, the measuring method with existing backman beam mensuration road surface roadbed rebound deflection, can not realize can not providing complete authentic data to affecting the continuous collection of deflection value automatic synchronization of peripheral a plurality of measuring points.
In view of this, special the utility model that proposes.
The utility model content
The purpose of this utility model is to provide and a kind ofly can gathers partial datas and stop the road surface roadbed rebound deflection measuring system of human error a plurality of measuring point automatic synchronizations.
For solving the problems of the technologies described above, the utility model adopts the basic conception of technical scheme to be:
A kind of road surface roadbed rebound deflection measuring system, comprise the flexure inspection vehicle, be fixed on the test beam on road surface by a fulcrum, and the forearm of described test beam is corresponding with described flexure inspection vehicle; It is characterized in that, also comprise displacement transducer and can read and store the controller of data, the postbrachium of described test beam connects the data acquisition end of described displacement transducer, and the signal output part of described displacement transducer connects the input of described controller.
Preferably, described displacement transducer is that radio communication is connected with described controller.
Preferably, described displacement transducer is resistor type displacement sensor.
Preferably, described controller is computer.
Preferably, described displacement transducer fixes on the ground by support.
Preferably, described test beam is backman beam.
Preferably, the bogie that described flexure inspection vehicle is standard axle load.
The beneficial effects of the utility model are: measuring system of the present utility model is owing to having adopted displacement transducer and controller, communication connection between the two, therefore but its automatic data collection, guarantee real-time, multiple spot continuity and the integrality of data and the advantage of stopping human error.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of specific embodiment of the utility model.
In figure: road surface-1 flexure inspection vehicle-2 test beam-3 forearm-31 postbrachium-32 fulcrum-4 displacement transducer-5 support-6 controller-7
The specific embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
With reference to Fig. 1, the utility model is a kind of road surface roadbed rebound deflection measuring system, comprises flexure inspection vehicle 2, is fixed on the test beam 3 on road surface 1 by a fulcrum 4, and the forearm 31 of described test beam 3 is corresponding with described flexure inspection vehicle 2; Also comprise displacement transducer 5 and can read and store the controller 7 of data, the postbrachium 32 of described test beam 3 connects the data acquisition end of described displacement transducer 5, and the signal output part of described displacement transducer 5 connects the input of described controller 7.
With reference to Fig. 1, it is a kind of specific embodiment of the present utility model.Described test beam 3 is backman beam in this embodiment, and described displacement transducer 5 is connected with described controller 7 radio communications, and described controller 7 is computer, and described displacement transducer 5 fixes on the ground by support 6.
Described displacement transducer 5 is preferably percentage tabular form resistor type displacement sensor.
The bogie (standard bogie) that described flexure inspection vehicle 2 is twin shaft, rear axle bilateral four-wheel, rear axle 10t standard axle load.
The following describes said apparatus and measure the concrete steps of road surface roadbed rebound deflection measured value.
Preparation before test:
(1) check and keep flexure inspection vehicle 2(standard bogie) vehicle condition and braking ability good, pressure of tire the blowing pressure up to specification.
(2) in recessing, load, and with platform scale weigh rear axle gross mass and the one-sided load of taking turns, all satisfactory axle weight-normality is fixed, in running car and mensuration process, axle must not weigh and changed.
(3) measure tire-contact area: on smooth smooth hard surfacing with jack by flexure inspection vehicle 2(standard bogie) rear axle jack-up, a new carbon paper of paving and a section paper below tire, fall gently jack, stamp tire footprint on section paper, method measuring and calculating tire-contact area with planimeter or number grid, be accurate to 0.1cm
2.
(4) check whether displacement transducer 5, network (as checked node, the gateway of wireless network), controller 7 meet requirement to be measured.
(5) when measuring on flexible pavement, during with road table thermometer determination test, (in one day, temperature constantly changes for temperature and road table temperature, should measure at any time), and the temperature on average (average of daily maximum temperature and the lowest temperature) of 5d before understanding by meteorological station.
(6) record flexible pavement and build or reconstruct the information such as material, structure, thickness, construction and maintenance.After being ready to, according to following step, measured:
(1) arrange measuring point at test segment, its distance needs to determine according to test.Measuring point should be on the wheel path of road surface 1 driving lane, and with mark on white oil paint or drawing with coloured chalk.
(2) by the position at about 3-5cm place after flexure inspection vehicle 2 rear wheel rotation gaps aligning measuring points.
(3) will test beam 3 and insert flexure inspection vehicle 2(standard bogies) place, gap between trailing wheel, consistent with flexure inspection vehicle 2 directions, beam arm (forearm 31 and the postbrachium 32 of test beam 3) must not be encountered tire, and displacement transducer 5 is installed on point position, and displacement transducer 5 is placed on support 6.
Scheme for connecting by radio communication between displacement transducer 5 and controller 7 also comprises:
(4) displacement transducer 5 is connected by networking with controller 7, makes whole system collect data mode in opening.
(5) the blow a whistle commander's flexure inspection vehicle 2 of issuing an order of mensuration person slowly advances, and displacement transducer 5 is stored rebound deflection value real-time Transmission to the controller 7 of the road surface roadbed that detects, thereby realizes that the continuous whole of road pavement roadbed rebound deflection value detects.
The utlity model has as from the foregoing following advantage:
Measuring system of the present utility model is owing to having adopted displacement transducer and controller, and therefore communication connection between the two has the following advantages:
1) collection property automatically
But displacement transducer 5 Automatic continuous image data.
2) real-time, multiple spot continuity and integrality
Real-time complete automatic record is stored in required image data in controller 7, having made up existing backman beam measures in the measuring method of road surface roadbed rebound deflection and uses mechanical dial gage can only detect the deficiency of single-point deflection value, guaranteed the real-time of desired data, multiple spot continuity, integrality and issuable error while stopping artificial reading.
3) reliability is strong
Percentage tabular form resistor type displacement sensor, this percentage tabular form resistor type displacement sensor is at a set of electrical measurement element of mechanical dial gage interior arrangement commonly used, can fall mechanical displacement and convert electric weight output to, it can be made mechanical dial gauge and use (machine survey) like this, plays again sensing effect (electrical measurement) simultaneously.Machine is surveyed, the relatively contrast check mutually of electrical measurement data, and can apply separately, does not affect service behaviour separately.The maturation that possesses skills, the degree of accuracy is high, highly sensitive, and resolution ratio is strong, and the characteristics such as simple are installed, and meets the requirement that backman beam is measured the measuring method of road surface roadbed rebound deflection.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a road surface roadbed rebound deflection measuring system, comprise the flexure inspection vehicle, be fixed on the test beam on road surface by a fulcrum, and the forearm of described test beam is corresponding with described flexure inspection vehicle; It is characterized in that, also comprise displacement transducer and can read and store the controller of data, the postbrachium of described test beam connects the data acquisition end of described displacement transducer, and the signal output part of described displacement transducer connects the input of described controller.
2. road surface according to claim 1 roadbed rebound deflection measuring system, is characterized in that, described displacement transducer is that radio communication is connected with described controller.
3. road surface according to claim 1 roadbed rebound deflection measuring system, is characterized in that, described displacement transducer is resistor type displacement sensor.
4. road surface according to claim 1 roadbed rebound deflection measuring system, is characterized in that, described controller is computer.
5. according to the described road surface of any one roadbed rebound deflection measuring system in claim 1-4, it is characterized in that, described displacement transducer fixes on the ground by support.
6. according to the described road surface of any one roadbed rebound deflection measuring system in claim 1-4, it is characterized in that, described test beam is backman beam.
7. according to the described road surface of any one roadbed rebound deflection measuring system in claim 1-4, it is characterized in that the bogie that described flexure inspection vehicle is standard axle load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204082798U CN203334166U (en) | 2013-07-10 | 2013-07-10 | Pavement subgrade rebound deflection measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204082798U CN203334166U (en) | 2013-07-10 | 2013-07-10 | Pavement subgrade rebound deflection measuring system |
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| Publication Number | Publication Date |
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| CN203334166U true CN203334166U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013204082798U Expired - Fee Related CN203334166U (en) | 2013-07-10 | 2013-07-10 | Pavement subgrade rebound deflection measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884396A (en) * | 2014-03-21 | 2014-06-25 | 浪潮集团有限公司 | Automobile fuel consumption intelligent analysis method based on big data |
| CN105806695A (en) * | 2016-03-01 | 2016-07-27 | 中铁城市规划设计研究院有限公司 | Viscoelasticity springback deformation based pavement detection equipment |
| CN114753219A (en) * | 2022-04-08 | 2022-07-15 | 广州市市政工程设计研究总院有限公司 | Road springback and deflection detection device based on Beckman beam method and use method |
-
2013
- 2013-07-10 CN CN2013204082798U patent/CN203334166U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884396A (en) * | 2014-03-21 | 2014-06-25 | 浪潮集团有限公司 | Automobile fuel consumption intelligent analysis method based on big data |
| CN105806695A (en) * | 2016-03-01 | 2016-07-27 | 中铁城市规划设计研究院有限公司 | Viscoelasticity springback deformation based pavement detection equipment |
| CN114753219A (en) * | 2022-04-08 | 2022-07-15 | 广州市市政工程设计研究总院有限公司 | Road springback and deflection detection device based on Beckman beam method and use method |
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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: 20131211 Termination date: 20170710 |