CN203113306U - Quality monitoring and controlling system of railroad bed continuous compaction - Google Patents
Quality monitoring and controlling system of railroad bed continuous compaction Download PDFInfo
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- CN203113306U CN203113306U CN 201320069567 CN201320069567U CN203113306U CN 203113306 U CN203113306 U CN 203113306U CN 201320069567 CN201320069567 CN 201320069567 CN 201320069567 U CN201320069567 U CN 201320069567U CN 203113306 U CN203113306 U CN 203113306U
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Abstract
The utility model discloses a quality monitoring and controlling system of railroad bed continuous compaction. At present, a conventional 'point type' sampling monitoring method is adopted to monitor and control the railroad bed continuous compaction, and therefore real-time control over the overall process of roller compaction cannot be achieved. The quality monitoring and controlling system of the railroad bed continuous compaction comprises a single chip microcomputer (1), wherein the single chip microcomputer is respectively connected with a ferroelectric memory (2), an A/D converter (3), a color liquid crystal display circuit (4), a GPS module (5), a GPRS module (6), a clock chip (7), an electrically-erasable programmable read only memory (8), an SD card (9), a USB interface circuit (10), a keyboard circuit (11) and a square wave switching circuit (12). The A/D converter is connected with a voltage switching circuit (13) and a signal processing circuit (14). The square wave switching circuit is connected with the signal processing circuit. The quality monitoring and controlling system of the railroad bed continuous compaction is used for quality monitoring and controlling of the railroad bed continuous compaction.
Description
Technical field:
The utility model relates to a kind of railway bed Continuous compacting quality monitoring and control system.
Background technology:
Roadbed is the basis of railway, is related to safe, the efficient operation of railway.Roadbed is the basis of track structure, along with the raising of train running speed, requires road structure to provide more smooth-going and stable supporting for superstructure.The compaction quality of roadbed filling engineering is determine its structural performance quality basic, and Subgrade Compaction Quality comprises the content of the three aspects :s such as compaction, compacting uniformity and stabilization by compaction.At present, for the Detection & Controling of roadbed filling engineering compaction quality, adopt conventional " point type " sampling Detection method, every layer complete and roll after, random selecting point, sampling Detection.The main deficiency of " point type " sampling Detection method:
(1) in theory, " point type " sampling Detection method, implicit precondition is roughly Normal Distribution rule of roadbed performance parameter, under such condition, adopt sampling method to be detected, its result can represent the performance condition of sampling highway section roadbed under certain fraction condition.In fact, because can causing that the variation, the random fluctuation of vibratory roller exciting force of road structure performance change, the variation of filler own causes the inhomogeneous a variety of causes such as variation that cause the roadbed performance of substratum rigidity in the inhomogeneous and measured depth scope of compaction effort, be difficult to guarantee roadbed performance parameter Normal Distribution rule, the testing result of so conventional " point type " sampling method is not necessarily representative.
(2) testing result of " point type " sampling Detection method only reflects near the mass property of the part that the road bed test point is, can't react near the mass property of the integral body in addition of road bed test point, and roadbed is along the vertical whole mass property (as the rigidity uniformity) of circuit, to track, the ride comfort when runing has a great impact.
(3) " point type " sampling Detection method is carried out completing after rolling, and is to detect after work, can't realize the real-time control in the process of rolling.Simultaneously, pointwise detects wastes time and energy, and to work progress, brings obvious interference, and efficient construction equipment can't be played a role effectively, has a strong impact on construction speed, is difficult to adapt to the mechanization construction requirement.
(4) " point type " sampling Detection method, do not meet code requirement if the section of rolling is found the testing result of indivedual test points, is difficult to define the scope again rolled.If all roll, likely cause " overvoltage " phenomenon in other qualified zone;
(5) conventional roadbed quality detecting index coefficient of subgrade reaction according to the rules,
k 30and modulus of deformation
e v2the packing material size detected should be not more than 7.5cm.And standard is that bedding partly is 10cm to the maximum to the dimensional requirement of roadbed filling, the following part of bedding is 15cm to the maximum.How to check and control but for the filling compaction that surpasses 7.5cm and do not explicitly call for;
Deficiency based on conventional " point type " sampling Detection method, relevant departments propose roadbed Continuous compacting quality monitoring and control method, employing can be in real time rolls to whole the Continuous compacting control technology that the face compaction quality carries out comprehensive monitoring and control, to guarantee the construction quality of roadbed filling engineering.
The utility model content:
The purpose of this utility model be to provide a kind of be applicable to adopt the Continuous compacting control technology carry out the monitoring of railway bed reclamation work construction quality with control fast, the railway bed Continuous compacting quality monitoring and control system that stable, precision is high, function is strong, to realize monitoring and the control to railway bed reclamation work Continuous compacting quality, improve construction quality and operating efficiency.
Above-mentioned purpose realizes by following technical scheme:
A kind of railway bed Continuous compacting quality monitoring and control system, its composition comprises: single-chip microcomputer, described single-chip microcomputer is connected with ferroelectric memory, A/D converter, Color Liquid Crystal Display circuit, GPS module, GPRS module, clock chip, EEPROM, SD card, usb circuit, keyboard circuit, square wave conversion circuit respectively, described A/D converter is connected with signal conditioning circuit with voltage conversion circuit, and described square wave conversion circuit is connected with described signal conditioning circuit.
Described railway bed Continuous compacting quality monitoring and control system, the model that the model that the model that the model that the model that the model that the model STM32F103VET6 of described single-chip microcomputer, the model of described ferroelectric memory are FM22L16, described A/D converter is ADS8364, described colorized lcd display model is DMT64480S057_03WNZ, described GPS module is Jupiter30, described GPRS module is MC55, described clock chip is DS1302, described EEPROM is AT24C64A.
Beneficial effect:
1. the utility model is by characterizing the conventional index coefficient of subgrade reaction of Subgrade Compaction Quality
k 30, coefficient of deformation
e v2and dynamic deformation module
e vdwith the road structure resistance
fthere is positive correlation, that is:
k 30∝
f,
e v2∝
f,
e vd∝
f, and the vertical motion signal obtained by the acceleration transducer be installed on the vibratory roller vibrating wheels
xthrough arranging conversion, then the vibratory compaction value obtained according to vibratory roller coupled vibration compaction process calculation of parameter
vCVcan correctly react the size of road structure resistance, and also there is positive correlation, that is:
vCV∝ F.Therefore, can be by the vibratory compaction value
vCVcharacterize conventional index.Based on above-mentioned conclusion, take the vibratory roller vibrating wheels as research object, railway bed Continuous compacting quality monitoring and control device is by being installed on the vertical motion signal of the acceleration transducer continuous acquisition vibrating wheels on the vibratory roller vibrating wheels
x, to vibration signal
xarranged, then according to vibratory roller coupled vibration compaction process calculation of parameter vibratory compaction value
vCV, and be presented in real time on color/graphics, operating personnel are as the corresponding vibratory compaction value of " controller " basis
vCV, Real-Time Monitoring construction quality, and the enforcement FEEDBACK CONTROL that takes appropriate measures, to guarantee Subgrade Construction Quality;
The utility model Subgrade Compaction Quality by conventional " point type " sampling work after Detection & Controling change into and cover whole comprehensive Real-Time Monitoring and the control that rolls face, visualization of presence shows compaction state, can take in time corresponding measure, guarantees construction quality;
3. the utility model combines with conventional " point type " sampling Detection method, can make the STOCHASTIC CONTROL of conventional detection become the point control of key (weakness) Regional Gravity And, a large amount of quantity that reduces conventional detection, increase work efficiency, and can determine that conventional detection does not conform to the residing scope of lattice point, improve accuracy of detection;
4. the utility model has been realized monitoring and the control of whole work progress, with construction, synchronize, efficiency is high, do not disturb construction, and can construct by guide field, " under-voltage " highway section is supplemented and rolls in time, simultaneously, can avoid " overvoltage ", guarantee the uniformity of compaction quality, optimize number of rolling simultaneously;
5. the utility model railway bed Continuous compacting quality monitoring and control system can be carried out quality monitoring and control to the large particle size filler roadbed, and conventional " point type " sampling Detection method is difficult to carry out;
The utility model railway bed Continuous compacting quality monitoring and control system intelligent degree high, simple to operate, be arranged in driver's cabin and show in real time compaction state, convenient operation is used;
7. the utility model adopts large capacity SD card storage to characterize the vibratory compaction value of Subgrade Compaction Quality
vCV, can avoid conventional " point type " sampling Detection method paper record to exist easily along bad, the deficiency such as lose.
8. the utility model can will characterize the vibratory compaction value of Subgrade Compaction Quality by USB interface
vCVform with file is sent to PC, realizes gathering of subgrade compaction status data, and can utilize PC to be further analyzed processing to related data.
9. the utility model, by GPS and GPRS module, can be realized the monitoring to job site, improves the managerial skills of administrative department to job site.
The utility model railway bed Continuous compacting quality monitoring and control system have that certainty of measurement is high, good stability, characteristics that antijamming capability is strong.
The accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is circuit theory diagrams of the utility model single-chip microcomputer.
Accompanying drawing 3 is circuit theory diagrams of the utility model power unit.
Accompanying drawing 4 is circuit theory diagrams of the utility model clock chip.
Accompanying drawing 5 is circuit theory diagrams of the utility model SD card.
Accompanying drawing 6 is circuit theory diagrams of the utility model Color Liquid Crystal Display circuit.
Accompanying drawing 7 is circuit theory diagrams of the utility model usb circuit.
Accompanying drawing 8 is circuit theory diagrams of the utility model EEPROM.
Accompanying drawing 9 is circuit theory diagrams of the utility model keyboard circuit.
Accompanying drawing 10 is circuit theory diagrams of the utility model ferroelectric memory.
Accompanying drawing 11 is circuit theory diagrams of the utility model GPS module.
Accompanying drawing 12 is circuit theory diagrams of the utility model GPRS module.
Accompanying drawing 14 is circuit theory diagrams of the utility model A/D converter.
In figure: between the same-sign circuit, there is annexation.
The specific embodiment:
Embodiment 1:
A kind of railway bed Continuous compacting quality monitoring and control system, its composition comprises: single-chip microcomputer 1, described single-chip microcomputer is connected with ferroelectric memory 2, A/D converter 3, Color Liquid Crystal Display circuit 4, GPS module 5, GPRS module 6, clock chip 7, EEPROM 8, SD card 9, usb circuit 10, keyboard circuit 11, square wave conversion circuit 12 respectively, described A/D converter is connected with voltage conversion circuit 13, signal conditioning circuit 14, and described square wave conversion circuit is connected with described signal conditioning circuit.
Described railway bed Continuous compacting quality monitoring and control system, its composition comprises: RAM series monolithic (STM32F103VET6), single-chip microcomputer by data/address bus and address bus and control bus form respectively with ferroelectric RAM memory (FM22L16), A/D converter (ADS8364), colorized lcd display model (DMT64480S057_03WNZ), GPS module (Jupiter30), GPRS module (MC55), clock (DS1302), EEPROM(AT24C64A), SD card (Kingston 8G), USB interface and keyboard etc. be connected.
Described railway bed Continuous compacting quality monitoring and control system, working power is DC12V, power consumption is less than 10W.
Described railway bed Continuous compacting quality monitoring and control system, vibration response signal
xthe ac voltage signal of acceleration transducer output is taken from input, and the signal amplitude scope is ± 2.5V, vibration response signal
xcertainty of measurement reaches 0.01m/s
2, vibration response signal
xthe fundamental wave frequency measurement precision reaches 0.02Hz.
Embodiment 2:
According to the described railway bed Continuous compacting of embodiment 1 quality monitoring and control system, signal conditioning circuit as shown in Figure 1 carries out filtering to remove interference to the acceleration signal of input, carry out again linear transformation to meet the requirement of A/D conversion to the input signal amplitude range, signal conditioning circuit, A/D converter are under the control of CPU, gather acceleration signal, according to vibratory roller coupled vibration compaction process parameter, calculate the vibratory compaction value
vCV, recycling vibratory compaction value
vCVthe monitoring of Subgrade Compaction implementation Process and control.The voltage conversion circuit part is carried out linear transformation to meet the requirement of A/D conversion to the input signal amplitude range to the device operating voltage, voltage conversion circuit part, A/D converter are under the control of CPU, the operating voltage of real-time monitoring system, during lower than certain value, provide alarm prompt when voltage.The signal of signal conditioning circuit output, through the square wave change-over circuit, convert vibration signal to square-wave signal, and square-wave signal, under the control of CPU, according to the fundamental frequency of the computation of Period vibration signal of square wave, is monitored the operating mode of vibratory roller.Ferroelectric memory is under the control of CPU, and storage rolls the vibratory compaction value of calculating through acceleration signal in process
vCV.EEPROM under CPU controls, the information such as sensitivity of storage vibratory roller relevant parameter, roadbed highway section relevant information, job information and acceleration transducer.The GPRS module under CPU controls, the vibratory compaction value that the vibration signal according to gathering and vibratory roller coupled vibration compaction process calculation of parameter can be obtained
vCV, radio to relevant departments.SD is stuck under the control of CPU, the vibratory compaction value that current Activity Calculation is obtained
vCVform with file is stored in the SD card, also can be by the vibratory compaction value of SD card storage
vCVrecall demonstration.The GPS module, under CPU controls, records the roadbed highway section, the address information of current operation.USB interface, under CPU controls, can will be stored in the vibratory compaction value of storing in the SD card
vCVbe transferred to PC.Clock, under CPU controls, records the temporal information of current operation.Keyboard and colorized lcd display model, under CPU controls, are realized man-machine interaction.
Embodiment 3:
According to the described railway bed Continuous compacting of embodiment 1 quality monitoring and control system, accompanying drawing 2 CPU(single-chip microcomputers) partial circuit figure.CPU is partly the core of described railway bed Continuous compacting quality monitoring and control system.Fig. 2 U1 51 ~ 54,63 ~ 66, pin is connected with the 1-8 pin of the J-KEY1LAMP of Fig. 9 respectively.Fig. 2 U1 23,24, the 33-36 pin is connected with the 1-6 pin of the J-KEY2 of Fig. 9 respectively.Fig. 2 U1 61,62,81,82, the 38-41 pin respectively with the 2-9 pin of Figure 10 U5, the 48-41 pin of the 7-10 of U7,13-16 pin and Figure 14 U8 is connected.
The 42-46 of Fig. 2 U1,55-57 pin respectively with the 2-9 pin of the U6 of Figure 10, the 40-33 pin of the 29-32 of U7,35-38 pin and Figure 14 U8 is connected.The 58-60 of Fig. 2 U1,85,86 pins are connected with 19,18,6,41,17 pins of U7 with Figure 10 respectively.93 pins of Fig. 2 U1 are connected with 1 pin of Figure 10 G3.72,96,2,80,85 pins of Fig. 2 U1 are connected with 51,58,31,27,29 pins of the U8 of Figure 14 respectively.3,4 pins of Fig. 2 U1 are connected with 5,6 pins of the U3 of Fig. 8 respectively.90,91,92 pins of Fig. 2 U1 are connected with 5,6,7 pins of the U2 of Fig. 4 respectively.The 29-32 pin of Fig. 2 U1 is connected with R14, R16, R17, the R15 of the SD_CARD of Fig. 5 respectively.70,71 pins of Fig. 2 U1 are connected with U3R19, the R18 of Fig. 7 respectively.47,48 pins of Fig. 2 U1 are connected with 10,9 pins of the U4 of Fig. 6 respectively.25,26 pins of Fig. 2 U1 are connected with 15,17 pins of the P2 of Figure 12 respectively.68 pins of Fig. 2 U1 are connected with 4 pins of Figure 11 P2.69 pins of Fig. 2 U1 are connected with the R108 of Figure 11.15,16 pins of Fig. 2 U1 are connected with 41,32 pins of Figure 12 P2 respectively.Fig. 2 UV-LIGHT, R-LIGHT, P-LIGHT are connected with 16,14,12 pins of the J-KEY1LAMP of Fig. 9 respectively.89 pins of Fig. 2 U1 are connected with the G1 of Figure 13.Realize the control of CPU to the various pieces such as A/D converter, ferroelectric memory, eeprom memory, SD card, clock, GPS module, GPRS module, USB interface, button and colorized lcd display model in Fig. 1 by above-mentioned connection.
Accompanying drawing 3 power unit circuit diagrams.Fig. 3 J-Power connects outside DC12V power supply, through E1, E2, E3 conversion obtain 3.3V, 5V, ± voltage of the different brackets such as 5V, for the relevant components and parts of Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13 and Figure 14 provide operating voltage.
Accompanying drawing 4 is that clock chip DS1302 is connected with CPU with the spi bus form.
Accompanying drawing 5 is that the SD card is connected with CPU with the spi bus form.
Accompanying drawing 6 is that colorized lcd display model is connected with CPU serial ports 3 through MAX232, and MAX232 realizes the conversion of TTL and RS232 level.
Accompanying drawing 7 is that USB interface is connected with CPU with the iic bus form, and is connected with external equipment by J-UP.
Accompanying drawing 8 EEPROM EEPROM are connected with CPU with the iic bus form.
Accompanying drawing 9 is that keyboard is connected with key panel with J_KEY2 by J_KEY1LAMP.
Accompanying drawing 10, by two 74HC573 extended address buses, is controlled ferroelectric memory.
Accompanying drawing 11 is that GPS directly is connected with the serial ports 1 of CPU.
Accompanying drawing 12 is that GPRS directly is connected with the serial ports 2 of CPU.
Accompanying drawing 13 signal conditioning circuit figure.By U9, U10 and relevant Resistor-Capacitor Unit, acceleration signal is carried out to filtering and disturb to remove, then carry out linear transformation to meet the requirement of A/D conversion to the input signal amplitude range.7 pins of Figure 13 U10 are connected with the R72 of Figure 14, and the acceleration signal after conditioning is input to A/D converter.Acceleration signal through conditioning converts square-wave signal to by U12, TP1, G1 and relevant Resistor-Capacitor Unit, utilizes the fundamental frequency of square-wave signal sense acceleration signal.Figure 13 U11 and related elements carry out linear transformation to supply voltage, and 7 pins by U11 are connected with the R70 of Figure 14, and power supply is monitored.
Accompanying drawing 14 is A/D conversion portion circuit diagrams.The requirement of consideration to the acceleration signal certainty of measurement, adopt 16 parallel-by-bit A/D conversion chips.
Embodiment 4:
A kind of method of work of railway bed Continuous compacting quality monitoring and control system, relevant verification: carry out the conventional index coefficient of subgrade reaction in test section
k 30value and vibratory compaction value
vCVcorrelation test, determine the conventional index coefficient of subgrade reaction
k 30value and vibratory compaction value
vCVindex of correlation, regression model and utilize regression model to calculate conventional index
k 30the vibratory compaction value that acceptance value is corresponding
vCV, i.e. target vibratory compaction value [
vCV]; Process control: at filler on consistent construction section, identical loading equipemtn while using relevant verification, utilize target vibratory compaction value [
vCV] roadbed Continuous compacting quality is carried out to monitoring and the control of overall process; Quality examination: at filler on consistent construction section, identical vibratory roller while using relevant verification, utilize the vibratory compaction value
vCVdistribution situation, choose weakness zone, choose weak spot at weakness zone and carry out routine " point type " sampling Detection; Attention: wherein, the filler of the construction section of process control and quality examination, water content and lift thickness etc. should be identical with the test section of relevant verification; Vibratory roller and vibratory compaction technological parameter thereof are also identical.
Described railway bed Continuous compacting quality monitoring and control system, utilization is installed on the vertical motion response signal X of the acceleration transducer collection of vibratory roller vibrating wheels, according to coupled vibration compaction process parameter and the mechanics principle of vibratory roller, calculates the vibratory compaction value that characterizes the Subgrade Compaction Quality state
vCV, recycling vibratory compaction value
vCVmonitoring and the control of realization to roadbed Continuous compacting quality.
Embodiment 5:
Method of work according to the described railway bed Continuous compacting of embodiment 4 quality monitoring and control system, described loading equipemtn adopts the vertical motion road roller, the vibratory compaction technological parameter of vibratory roller should keep stable, the fluctuation range of vibratory roller vibration frequency do not answer overrate ± 0.5Hz; Vibratory roller should remain a constant speed and travel, and travel speed should adopt 3km/h, should not surpass 4 km/h at most; Acceleration transducer is vertically mounted on the interior side frame of vibratory roller vibrating wheels with answering close and firm.
Embodiment 6:
According to the method for work of the described railway bed Continuous compacting of embodiment 4 quality monitoring and control system, the purpose one of described relevant verification is to judge the applicability of index, works as conventional index
k 30with the vibratory compaction value
vCVdegree of correlation while reaching certain value, index is only applicable, otherwise, answer improved packing or adjust the vibratory roller relevant parameter, until degree of correlation reaches certain value; The 2nd, work as conventional index
k 30value and vibratory compaction value
vCVdegree of correlation while reaching certain value, determine conventional index
k 30with the vibratory compaction value
vCVindex of correlation, regression model and and conventional index
k 30target vibratory compaction value corresponding to acceptance value [
vCV], described relevant verification comprises the steps:
(1) utilize vibratory roller to carry out rolling continuously of system-wide section to test section, the vibratory compaction value of each detecting unit of record storage simultaneously
vCV, the vibratory compaction value of recycling system-wide section
vCV, and Elastic Vibration compacting value
vCVscope choose corresponding test point and do routine " point type " sampling Detection, described detection is counted and is greater than 18 points;
(2) determine conventional index
k 30value and corresponding vibratory compaction value
vCVbetween index of correlation
, that is:
In formula,
,
,
for conventional detection is counted; Work as conventional index
k 30value and corresponding vibratory compaction value
vCVbetween index of correlation
the time, the compaction quality of postorder construction section can adopt Continuous compacting quality-monitoring and control technology;
(3) determine conventional index
k 30value and corresponding vibratory compaction value
vCVbetween regression model, that is:
In formula,
a,
bfor regression coefficient;
(4), according to regression model, determine conventional index
k 30acceptance value
corresponding target compaction vibration values [
vCV], calculating formula is:
Embodiment 7:
Method of work according to the described railway bed Continuous compacting of embodiment 4 quality monitoring and control system, described process control is the compacting process quality control, described compacting process quality control is the key link of roadbed filling engineering compaction quality Whole Process Control, is the assurance of construction quality; Described compacting process quality control mainly comprises three aspects: (1) compaction: whether control the degree that the filling body physical and mechanical property reaches setting, solving filling body has enough strength and stiffness supporting superstructures; (2) compacting uniformity: control the degree that is uniformly distributed of filling body physical and mechanical property, can solution evenly support superstructure; (3) stabilization by compaction: control the degree of stability of filling body physical and mechanical property, solve filling body under the train Repeated Loading and can for a long time, effectively support the fatigue problem of superstructure; The quality control of roadbed filling engineering compacting process is with each detecting unit vibratory compaction value of recording occurring continuously
vCVfor foundation, carry out real-time compaction quality according to the relevant control criterion of compaction, compacting uniformity and stabilization by compaction and control.
Embodiment 8:
According to the method for work of the described railway bed Continuous compacting of embodiment 4 quality monitoring and control system, judgement and the control of described compacting process in work progress should meet the following requirements:
(1) detecting unit compaction is according to the vibratory compaction value
vCVwith target vibratory compaction value [
vCV] relatively judged, for
ithe vibratory compaction value that individual detecting unit is corresponding
, when meeting
the time,
iindividual detecting unit compaction passes through, otherwise, do not pass through;
(2) percent of pass that rolls face compaction is according to by area and the ratio calculation that rolls the ratio of face area or detecting unit sum that detection is passed through and detecting unit and count sum, percent of pass should be controlled by being not less than 95%, and the detecting unit wherein do not passed through should be the dispersion distribution.
Embodiment 9:
According to the method for work of the described railway bed Continuous compacting of embodiment 4 quality monitoring and control system, described compacting uniformity compacting uniformity in work progress is judged and is controlled and should meet the following requirements:
(1) compacting uniformity can be by rolling vibratory compaction curve on wheelmark the fluctuation intensity of variation and roll surface vibration compacting value
vCVdistribution characteristics judged;
(2) compacting uniformity should be pressed the vibratory compaction value
vCVbe not less than 80% of its average,
, wherein,
for relevant road segments vibratory compaction value
vCVaverage.
Embodiment 10:
According to the method for work of the described railway bed Continuous compacting of embodiment 7 quality monitoring and control system, described stabilization by compaction stabilization by compaction sex determination in work progress should meet the following requirements with controlling:
(1) stabilization by compaction evaluation and control should adopt the vibratory compaction value of the same travel direction of vibratory roller
vCVcarry out;
(2) stabilization by compaction should according to same roll wheelmark go forward after twice vibratory compaction value
vCVdifference judged;
(3) stability should by same roll wheelmark go forward after twice vibratory compaction value
vCVrate of change is not more than
controlled,
get 3%.
Embodiment 11:
According to the method for work of the described railway bed Continuous compacting of embodiment 7 quality monitoring and control system, described quality control is to utilize construction section to roll whole vibratory compaction values of face
vCVdescribe to roll face compaction state distribution map, the weak spot of choosing in weakness zone is carried out routine " point type " sampling Detection, and described construction section rolls the whole vibratory compaction values of face
vCVshould meet the following requirements:
(1) construction section should be divided into a plurality of Analysis Blocks by 100 meters length and carries out, and the construction section that less than is 100 meters can be got separately and do one section;
(2) Analysis Block of every 100 meters length should be added up whole compacting vibration values
vCVmaximum value, minimum value, average, extreme difference, standard deviation, the coefficient of variation and distribution histogram etc.
Embodiment 12:
According to the method for work of the described railway bed Continuous compacting of embodiment 7 quality monitoring and control system, the formation method that described construction section rolls face compaction state distribution map comprises the steps:
(1) construction section rolls the whole vibratory compaction values of face
vCVaccording to being arranged to the order of high value from low value, meet
,
,
sum for whole vibratory compaction values;
(2) the whole vibratory compaction values after the sequence
vCVsequence should be divided into groups with certain interval, the
the group data are determined by following formula:
In formula,
for packet spacing;
for whole vibratory compaction values
vCVminimum value;
(3) grouped data, according to being illustrated to the order of high value and corresponding position by low value, forms and rolls face compaction state distribution map, and wherein each grouping represents a kind of compaction state.
Embodiment 13:
Operating principle: regard the vibroroller cmpacting process of vibratory roller as a kind of dynamic testing process (vibratory compaction test), vibratory roller is dynamic load equipment, in the process of rolling, vibrating wheels is subject to resistance (counter-force) effect from exciting force and the road structure of vibratory roller self simultaneously, and the acting in conjunction of the two causes the vibratory response of vibratory roller vibrating wheels.If take vibrating wheels as research object, roadbed always can characterize by its resistance the effect of vibrating wheels, under vibrating wheels parameter and the known condition of exciting force, the vibratory response packets of information of actual measurement has contained the relevant information of road structure resistance, the resistance of the vibratory response identification road structure based on vibrating wheels, and then the index of computational representation roadbed performance, realize monitoring and the control of Subgrade Compaction quality.
Condition of work:
(1) loading equipemtn should adopt the vertical motion road roller, and the vibratory compaction technological parameter of vibratory roller should keep stable, the fluctuation range of vibratory roller vibration frequency do not answer overrate ± 0.5Hz; Vibratory roller should remain a constant speed and travel, and travel speed should adopt 3km/h, should not surpass 4 km/h at most.
(2) acceleration transducer is vertically mounted on the interior side frame of vibratory roller vibrating wheels with answering close and firm.
The course of work:
Railway bed Continuous compacting quality monitoring and control system work process comprises three parts: relevant verification---carry out the conventional index coefficient of subgrade reaction in test section
k 30value and vibratory compaction value
vCVcorrelation test, determine the conventional index coefficient of subgrade reaction
k 30value and vibratory compaction value
vCVindex of correlation, regression model and utilize regression model to calculate conventional index
k 30the vibratory compaction value that acceptance value is corresponding
vCV, i.e. target vibratory compaction value [
vCV]; Process control---at filler on consistent construction section, identical vibratory roller while using relevant verification, utilize target vibratory compaction value [
vCV] roadbed Continuous compacting quality is carried out to monitoring and the control of overall process; Quality examination---at filler on consistent construction section, identical vibratory roller while using relevant verification, utilize the vibratory compaction value
vCVdistribution situation, choose weakness zone, choose weak spot at weakness zone and carry out routine " point type " sampling Detection.Below the detailed process of above-mentioned three aspects is illustrated:
1, relevant verification
The purpose one of relevant verification is to judge the applicability of index, works as conventional index
k 30with the vibratory compaction value
vCVdegree of correlation while reaching certain value, index is only applicable, otherwise, answer improved packing or adjust the vibratory roller relevant parameter, until degree of correlation reaches certain value; The 2nd, work as conventional index
k 30value and vibratory compaction value
vCVdegree of correlation while reaching certain value, determine conventional index
k 30with the vibratory compaction value
vCVindex of correlation, regression model and and conventional index
k 30target vibratory compaction value corresponding to acceptance value [
vCV].
Concrete steps:
(1) utilize vibratory roller to carry out rolling continuously of system-wide section to test section, the vibratory compaction value of each detecting unit of record storage simultaneously
vCV, the vibratory compaction value of recycling system-wide section
vCV, and Elastic Vibration compacting value
vCVscope choose corresponding test point and do routine " point type " sampling Detection (detection is counted and usually is greater than 18 points);
(2) determine conventional index
k 30value and corresponding vibratory compaction value
vCVbetween index of correlation
, that is:
In formula,
,
,
for conventional detection is counted.Work as conventional index
k 30value and corresponding vibratory compaction value
vCVbetween index of correlation
the time, the compaction quality of postorder construction section can adopt Continuous compacting quality-monitoring and control technology.
(3) determine conventional index
k 30value and corresponding vibratory compaction value
vCVbetween regression model, that is:
In formula,
a,
bfor regression coefficient.
(4), according to regression model, determine conventional index
k 30acceptance value
corresponding target compaction vibration values [
vCV], calculating formula is:
2, process control
The compacting process quality control is the key link of roadbed filling engineering compaction quality Whole Process Control, is the assurance of construction quality.The compacting process quality control mainly comprises three aspects: compaction---whether control the degree that the filling body physical and mechanical property reaches setting, solving filling body has enough strength and stiffness supporting superstructures; The compacting uniformity---control the degree that is uniformly distributed of filling body physical and mechanical property, can solution evenly support superstructure; Stabilization by compaction---control the degree of stability of filling body physical and mechanical property, solve filling body under the train Repeated Loading and can for a long time, effectively support superstructure (fatigue problem).The quality control of roadbed filling engineering compacting process is with each detecting unit vibratory compaction value of recording occurring continuously
vCVfor foundation, carry out real-time compaction quality according to the relevant control criterion of compaction, compacting uniformity and stabilization by compaction and control.
(1) in work progress, the judgement of compaction and control should meet the following requirements
1. detecting unit compaction is according to the vibratory compaction value
vCVwith target vibratory compaction value [
vCV] relatively judged, for
ithe vibratory compaction value that individual detecting unit is corresponding
, when meeting
the time,
iindividual detecting unit compaction passes through, otherwise, do not pass through;
2. roll the percent of pass of face compaction according to by area (the detecting unit sum that detection is passed through), accounting for how many calculating that roll face area (detecting unit is counted sum).Percent of pass should be controlled by being not less than 95%, and the detecting unit wherein do not passed through should be the dispersion distribution.
(2) in work progress, the compacting uniformity is judged and is controlled and should meet the following requirements
1. compacting uniformity can be by rolling vibratory compaction curve on wheelmark the fluctuation intensity of variation and roll surface vibration compacting value
vCVdistribution characteristics judged;
2. compacting uniformity should be pressed the vibratory compaction value
vCVbe not less than 80% of its average,
, wherein,
for relevant road segments vibratory compaction value
vCVaverage.
(3) in work progress, stabilization by compaction sex determination and control should meet the following requirements
1. stabilization by compaction evaluation and control should adopt the vibratory compaction value of the same travel direction of vibratory roller
vCVcarry out;
2. stabilization by compaction should according to same roll wheelmark go forward after twice vibratory compaction value
vCVdifference judged;
3. stability should by same roll wheelmark go forward after twice vibratory compaction value
vCVrate of change is not more than
controlled,
usually get 3%.
3, quality control
Utilize construction section to roll whole vibratory compaction values of face
vCVdescribe to roll face compaction state distribution situation, the weak spot of choosing in weakness zone is carried out routine " point type " sampling Detection.
(1) construction section rolls the whole vibratory compaction values of face
vCVshould meet the following requirements
1. construction section should be divided into a plurality of Analysis Blocks by 100 meters length and carries out, and the construction section that less than is 100 meters can be got separately and do one section;
2. the Analysis Block of every 100 meters length should be added up whole compacting vibration values
vCVmaximum value, minimum value, average, extreme difference, standard deviation, the coefficient of variation and distribution histogram etc.
(2) construction section rolls the formation method of face compaction state distribution map
1. construction section rolls the whole vibratory compaction values of face
vCVaccording to being arranged to the order of high value from low value, meet
,
,
sum for whole vibratory compaction values;
2. the whole vibratory compaction values after sorting
vCVsequence should be divided into groups with certain interval, the
the group data are determined by following formula:
In formula,
for packet spacing;
for whole vibratory compaction values
vCVminimum value.
3. grouped data, according to being illustrated to the order of high value and corresponding position by low value, forms and rolls face compaction state distribution map, and wherein each grouping represents a kind of compaction state.
Utilize construction section to roll face compaction state distribution map, choose the weak spot of weakness zone and carry out routine " point type " sampling Detection, reduced to detect and counted, improved operating efficiency, also guarantee the validity detected.
Attention: the filler of the construction section of process control and quality examination, water content and lift thickness etc. should be identical with the test section of relevant verification; Vibratory roller and vibratory compaction technological parameter thereof are also identical.
Claims (1)
1. a railway bed Continuous compacting quality monitoring and control system, its composition comprises: single-chip microcomputer, it is characterized in that: described single-chip microcomputer is connected with ferroelectric memory, A/D converter, Color Liquid Crystal Display circuit, GPS module, GPRS module, clock chip, EEPROM, SD card, usb circuit, keyboard circuit, square wave conversion circuit respectively, described A/D converter is connected with signal conditioning circuit with voltage conversion circuit, and described square wave conversion circuit is connected with described signal conditioning circuit.
2. railway bed Continuous compacting quality monitoring and control system according to claim 1, it is characterized in that: the model STM32F103VET6 of described single-chip microcomputer, the model of described ferroelectric memory is FM22L16, the model of described A/D converter is ADS8364, the model of described colorized lcd display model is DMT64480S057_03WNZ, the model of described GPS module is Jupiter30, the model of described GPRS module is MC55, the model of described clock chip is DS1302, the model of described EEPROM is AT24C64A.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061236A (en) * | 2013-02-06 | 2013-04-24 | 黑龙江工程学院 | Continuous railroad bed compaction quality monitoring and controlling system and working method |
| CN104652180A (en) * | 2015-02-11 | 2015-05-27 | 中国水利水电第四工程局有限公司 | Roadbed filling construction method |
| CN110761262A (en) * | 2019-10-14 | 2020-02-07 | 浙江大学 | Self-powered high-speed railway foundation monitoring system and monitoring method |
| CN113250042A (en) * | 2021-05-06 | 2021-08-13 | 黑龙江工程学院 | Detection method for rolling quality of high-speed railway roadbed |
-
2013
- 2013-02-06 CN CN 201320069567 patent/CN203113306U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061236A (en) * | 2013-02-06 | 2013-04-24 | 黑龙江工程学院 | Continuous railroad bed compaction quality monitoring and controlling system and working method |
| CN104652180A (en) * | 2015-02-11 | 2015-05-27 | 中国水利水电第四工程局有限公司 | Roadbed filling construction method |
| CN104652180B (en) * | 2015-02-11 | 2016-03-16 | 中国水利水电第四工程局有限公司 | A kind of roadbed filling construction method |
| CN110761262A (en) * | 2019-10-14 | 2020-02-07 | 浙江大学 | Self-powered high-speed railway foundation monitoring system and monitoring method |
| CN113250042A (en) * | 2021-05-06 | 2021-08-13 | 黑龙江工程学院 | Detection method for rolling quality of high-speed railway roadbed |
| CN113250042B (en) * | 2021-05-06 | 2023-02-17 | 黑龙江工程学院 | Detection method for rolling quality of high-speed railway roadbed |
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