CN104032631A - Method for maintaining and handling railway ballastless track with frost heaving - Google Patents
Method for maintaining and handling railway ballastless track with frost heaving Download PDFInfo
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- CN104032631A CN104032631A CN201410309370.3A CN201410309370A CN104032631A CN 104032631 A CN104032631 A CN 104032631A CN 201410309370 A CN201410309370 A CN 201410309370A CN 104032631 A CN104032631 A CN 104032631A
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Abstract
The invention provides a method for maintaining and handling a railway ballastless track with frost heaving. The method includes the steps that geometric dimensions and linear position parameters of the railway ballastless track are obtained; the railway ballastless track is divided into frost heaving convex parts and frost heaving non-convex parts according to the geometric dimensions and linear position parameters of the railway ballastless track, the frost heaving convex parts are parts where protrusions are generated by the railway ballastless track in a frost heaving season, and the frost heaving non-convex parts are parts where protrusions are not generated by the railway ballastless track in the frost heaving season. According to the method, track elevations of the frost heaving non-convex parts are lifted or track elevations of the frost heaving convex parts are lowered before a roadbed frost heaving season, part of the track elevations of the frost heaving convex parts is preferably selected to be lowered in the roadbed frost heaving season, the elevation of the railway ballastless track can be adjusted accurately, the situation that the railway ballastless track unevenly deforms and the geometric dimensions and the parameters exceed specified values caused by the fact that a roadbed and a bridge and culvert foundation suffer from frost heaving is avoided, ride comfort of the railway ballastless track is improved, and comfort, stability and security are guaranteed when a train runs.
Description
Technical field
The present invention relates to railroad track construction and maintenance technology field, refer to that especially a kind of railway ballastless track of problem of frost heave that exists safeguards processing method.
Background technology
Roadbed and bridges and culverts basis problem of frost heave have generality in seasonal frozen soil region, the whole world, inhomogeneous frost heave and thaw collapse affect railway, especially the riding quality of high-speed railway, if serious differential frost heave or thaw collapse can not get timely processing, will cause track generation moderate finite deformation, jeopardize railway operation safety.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of railway ballastless track of problem of frost heave that exists and safeguards processing method, avoid non-fragment orbit because of the larger inhomogeneous deformation of frost heave generation, improved the ride comfort of track, comfortableness, stability and the safety of train driving are guaranteed.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of railway ballastless track of problem of frost heave that exists to safeguard processing method, as long as the depth displacement of frost heave boss and the non-boss of frost heave within the specific limits and position relative fixing, use this method one-stop operation can forever solve the non-fragment orbit inhomogeneous deformation problem of roadbed and the frost heave initiation of bridges and culverts basis, described method comprises:
Obtain described non-fragment orbit then and track geometry dimensional parameters over the years and line position parameter;
According to described track geometry size and line position parameter, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, to be non-fragment orbit produce protruding position season in frost heave to frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave.
At raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
Preferably, describedly at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season, comprising:
Obtain the first depth displacement and the second depth displacement that roadbed and bridges and culverts basis frost heave cause track, described the first depth displacement is frost heave track in season elevation and default track elevation difference, and described the second depth displacement is the track depth displacement of frost heave boss and the non-boss of frost heave;
According to described the first depth displacement and the second depth displacement, at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
Preferably, described according to described the first depth displacement and the second depth displacement at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season and comprise:
Obtain depth displacement and the backing plate quantity of frost heave boss and the non-boss of frost heave;
According to the depth displacement of described frost heave boss and the non-boss of frost heave, prescribed threshold, backing plate height and service condition, obtain backing plate quantity N, wherein N is more than or equal to 0 integer;
Frost heave reduces N piece backing plate below increasing N piece backing plate or frost heave boss rail before season below the non-boss rail of frost heave; .
In frost heave, below frost heave boss rail, reduce N piece backing plate season.
Preferably, described method also comprises:
Utilize described track geometry dimensional parameters partly to reduce boss track elevation season in frost heave, guarantee track geometry dimensional parameters be no matter frost heave season or in thaw collapse season all the time in < < standard > > allowed band.
Preferably, described method also comprises:
Utilize described track geometry dimensional parameters and line position parameter at the frost heave non-boss track elevation that raises season.
When (as corresponding 120 meters of speed 350km/h, corresponding 70 meters of speed 250km/h) frost heave track in the season elevation in certain limit and default track depth displacement value difference surpass prescribed threshold, determine the non-boss of frost heave boss and frost heave; By frost heave track in the season elevation in non-fragment orbit certain limit and default track depth displacement value difference surpass defined threshold and difference larger position be defined as frost heave boss;
By the frost heave season in non-fragment orbit certain limit historical track elevation be no more than defined threshold with default track depth displacement value difference or difference is poor over threshold values but the less position of difference is defined as the non-boss of frost heave; Preferably, utilize described historical track geometry size and line position parameter before season, to reduce the track elevation of frost heave boss or the track elevation of the non-boss of rising frost heave in frost heave, comprising:
Utilize the frost heave of described historical track geometry size and line position parameter acquiring frost heave boss to change elevation;
According to described frost heave, change elevation and in frost heave, before season, reduce the track elevation of the track elevation of frost heave boss or the non-boss of frost heave of rising frost heave boss both sides.
Preferably, according to described frost heave, change elevation and in frost heave, before season, reduce the track elevation of the track elevation of frost heave boss or the non-boss of frost heave of rising frost heave boss both sides, guarantee before frost heave and frost heave after track geometry size do not transfinite, comprising:
Obtain frost heave boss and frost heave non-boss depth displacement difference and backing plate quantity;
According to frost heave boss and the non-boss depth displacement of frost heave difference, prescribed threshold, plate thickness specification and service condition, determine backing plate quantity N, wherein N is more than or equal to 0 integer;
Frost heave reduced N piece backing plate or below the non-boss of frost heave, increased N piece backing plate before season below frost heave boss.
Preferably, described method also comprises:
Obtain frost heave current track geometry size and the line position parameter in season of described non-fragment orbit;
According to described current track geometry size and line position parameter, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, to be non-fragment orbit produce protruding position season in frost heave to described frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave;
Utilize described current track geometry size and line position parameter to reduce the track elevation of frost heave boss or the track elevation of the non-boss of rising frost heave season in frost heave.
Preferably, according to described track geometry dimensional parameters, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, comprises:
The track elevation in non-fragment orbit frost heave season and default track elevation are compared, form relatively difference, i.e. the first depth displacement.
When (as corresponding 120 meters of speed 350km/h, corresponding 70 meters of speed 250km/h) the poor value difference in certain limit surpasses prescribed threshold, determine the non-boss of frost heave boss and frost heave; By frost heave track in the season elevation in non-fragment orbit certain limit and default track depth displacement value difference surpass defined threshold and difference larger position be defined as frost heave boss;
Frost heave track in season elevation in non-fragment orbit certain limit and default track depth displacement value difference are no more than to defined threshold or difference is poor surpasses threshold values but the less position of difference is defined as the non-boss of frost heave;
Preferably, utilize described track geometry size and line position parameter partly to reduce the track elevation of frost heave boss season or the track elevation of the non-boss of frost heave that partly raises in frost heave, guarantee that frost heave and thaw collapse track geometry in season size all do not transfinite, and comprising:
Obtain the non-boss depth displacement of frost heave boss and frost heave difference (the second depth displacement) and backing plate quantity;
According to frost heave boss and the non-boss depth displacement of frost heave difference, prescribed threshold, plate thickness and service condition, determine backing plate quantity N, wherein N is more than or equal to 0 integer;
Frost heave reduces N piece backing plate or below the non-boss of frost heave, increases N piece backing plate season below frost heave boss.
In the present embodiment, by utilizing described orbit parameter at raise before season non-frost heave boss elevation or reduce frost heave boss elevation of frost heave; In frost heave preferred part in season, reduce frost heave boss track elevation; Can to the elevation of track, adjust exactly, reduce track because of the inhomogeneous deformation that frost heave causes, improve the stationarity of track, comfortableness, stability and the safety of train driving are guaranteed.
Accompanying drawing explanation
Fig. 1 is that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded process flow figure;
Fig. 2 is that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method frost heave boss and the non-boss structural representation of frost heave;
Fig. 3 is the orbital position schematic diagram that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method;
Fig. 4-a and 4-b are the orbital position schematic diagram that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method;
Fig. 5 is the orbital position schematic diagram that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method;
Fig. 6 is the orbital position schematic diagram that the railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method.
The specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, a kind of railway ballastless track of problem of frost heave that exists of embodiments of the invention is safeguarded processing method, as long as the depth displacement of frost heave boss and the non-boss of frost heave within the specific limits and position relative fixing, use this method one-stop operation can forever solve the non-fragment orbit inhomogeneous deformation problem of roadbed and the frost heave initiation of bridges and culverts basis, described method comprises:
Step 101: obtain described non-fragment orbit then and track geometry dimensional parameters and line position parameter over the years.
Wherein, track geometry dimensional parameters over the years and parameter railway line position, line position parameter can comprise non-fragment orbit then and roadbed frost heave data over the years, comprehensive detection train detection of dynamic data, (the linear variation of static measurement data, track geometry sized data), amount of precipitation and temperature condition, rail height, level, distortion, rail to wait in track irregularity parameter at least one, track geometry dimensional parameters over the years and line position parameter can obtain by measuring in advance or transferring, track geometry dimensional parameters over the years and line position parameter can be average or the maximum value of orbit parameter recent years.Track geometry dimensional parameters over the years and line position parameter can also comprise: the region dividing data of frost heave boss and the non-boss of frost heave, frost heave boss frost heave change at least one in the orbital datas such as altitude data, gauge, superelevation, center line, elevation.Utilize track geometry dimensional parameters and line position parameter can obtain the first depth displacement and the second depth displacement that roadbed and bridges and culverts basis frost heave causes track, described the first depth displacement is frost heave track in season elevation and default track elevation difference, and described the second depth displacement is the track depth displacement of frost heave boss and the non-boss of frost heave;
Step 102: non-fragment orbit is divided into frost heave boss and the non-boss of frost heave according to described track geometry size and line position parameter, to be non-fragment orbit produce protruding position season in frost heave to frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave.
Wherein, obtain the first depth displacement and the second depth displacement that roadbed and bridges and culverts basis frost heave cause track, described the first depth displacement is frost heave track in season elevation and default track elevation difference, and described the second depth displacement is the track depth displacement of frost heave boss and the non-boss of frost heave; According to described the first depth displacement and the second depth displacement, at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
Can be according to described track geometry dimensional parameters and line position parameter acquiring non-fragment orbit frost heave track in season elevation; Non-fragment orbit frost heave track in season elevation and default track elevation are compared, form the first depth displacement; Frost heave boss and non-boss the first depth displacement of frost heave are compared to formation the second depth displacement.
When (as corresponding 120 meters of speed 350km/h, corresponding 70 meters of speed 250km/h) second depth displacement in certain limit surpasses prescribed threshold, determine the non-boss of frost heave boss and frost heave; By frost heave track in the season elevation in non-fragment orbit certain limit and default track depth displacement value difference surpass defined threshold and difference larger position be defined as frost heave boss.
Frost heave track in season elevation in non-fragment orbit certain limit and default track depth displacement value difference are no more than to defined threshold or difference is poor surpasses threshold values but the less position of difference is defined as the non-boss of frost heave.
Step 103: at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, reduce frost heave boss track elevation season in frost heave.
Wherein, can utilize the frost heave of described track geometry dimensional parameters and line position parameter acquiring frost heave boss to change elevation, according to described frost heave, change elevation and in frost heave, before season, reduce the track elevation of the track elevation of frost heave boss or the non-boss of frost heave of rising frost heave boss both sides, carry out along slope operation according to being not less than 1:3000 ratio the non-boss of frost heave rising place both sides, guarantees that frost heave front and back track geometry size does not all transfinite.
Concrete, obtain depth displacement and the backing plate quantity of frost heave boss and the non-boss of frost heave; According to depth displacement, prescribed threshold, plate thickness and the service condition of described frost heave boss and the non-boss of frost heave, obtain backing plate quantity N, wherein N is more than or equal to 0 integer; Frost heave reduces N piece backing plate below increasing N piece backing plate or frost heave boss rail before season below the non-boss rail of frost heave.
Preferably, according to the depth displacement of described frost heave boss and the non-boss of frost heave, relevant regulations threshold values, plate thickness and service condition, obtain backing plate quantity N.
As long as the depth displacement of frost heave boss and the non-boss of frost heave within the specific limits and position relative fixing, use method one-stop operation of the present invention can forever solve the non-fragment orbit inhomogeneous deformation problem of roadbed and the frost heave initiation of bridges and culverts basis, frost heave non-boss track elevation or reduce in advance frost heave boss track elevation in advance raise before season in frost heave, guarantee that physical dimension does not transfinite the whole year, and steadily tide over frost heave and thaw collapse season; To the place of transfiniting of de novo frost heave then, in frost heave, in season, take to reduce the method for frost heave boss track elevation, guaranteeing does not all transfinite in frost heave and thaw collapse physical dimension in season, in the corresponding certain limit of described frost heave boss, roadbed and the basic frost heave of bridges and culverts cause the larger region of rail surface rising, and in the corresponding certain limit of the non-boss of described frost heave, roadbed and bridges and culverts basis frost heave cause the less region of rail surface rising.
Preferably, described method also comprises:
Utilize described track geometry dimensional parameters partly to reduce boss track elevation season in frost heave, guarantee track geometry dimensional parameters be no matter frost heave season or in thaw collapse season all the time in < < standard > > allowed band.
Utilize described track geometry dimensional parameters and line position parameter at the frost heave non-boss track elevation that raises season.
The railway ballastless track that has problem of frost heave that is the embodiment of the present invention referring to Fig. 2 is safeguarded processing method frost heave boss and the non-boss structural representation of frost heave, in Fig. 2, comprise track elevation (2) after default track elevation (1), frost heave, frost heave boss (3), the non-boss of frost heave (4).
Can obtain track geometry dimensional parameters and the line position parameter in frost heave season of described non-fragment orbit;
According to described track geometry dimensional parameters and line position parameter, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, to be non-fragment orbit produce protruding position season in frost heave to described frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave;
Utilize described track geometry size and line position parameter to reduce the track elevation of frost heave boss or the track elevation of the non-boss of rising frost heave season in frost heave.
Preferably, describedly according to described track geometry dimensional parameters, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, comprises:
The track elevation in non-fragment orbit frost heave season and default track elevation are compared, form relatively difference.
When (as corresponding 120 meters of speed 350km/h, corresponding 70 meters of speed 250km/h) frost heave track in the season elevation in certain limit and default track depth displacement value difference surpass prescribed threshold, determine the non-boss of frost heave boss and frost heave; By frost heave track in the season elevation in non-fragment orbit certain limit and default track depth displacement value difference surpass defined threshold and difference larger position be defined as frost heave boss;
Frost heave track in season elevation in non-fragment orbit certain limit and default track depth displacement value difference are no more than to defined threshold or difference is poor surpasses threshold values but the less position of difference is defined as the non-boss of frost heave;
Preferably, described described track geometry size and the line position parameter utilized partly reduces the track elevation of frost heave boss season or the track elevation of the non-boss of frost heave that partly raises in frost heave, guarantee that frost heave and thaw collapse track geometry in season size all do not transfinite, and comprising:
Obtain frost heave boss and frost heave non-boss depth displacement difference and backing plate quantity;
According to frost heave boss and the non-boss depth displacement of frost heave difference, prescribed threshold, plate thickness and service condition, determine backing plate quantity N, wherein N is more than or equal to 0 integer;
Frost heave reduces N piece backing plate or below the non-boss of frost heave, increases N piece backing plate season below frost heave boss.
Historical orbit parameter and the current orbit parameter of the embodiment of the present invention obtain by following equipment, and described equipment comprises:
Comprehensive detection train: the EMUs of rail detection system are housed, and are the capital equipments that track detects always.For adapting to the development of Line for Passenger Transportation and high-speed railway, need to carry out comprehensive detection to infrastructure such as track, contact net, communication, signals, the professional checkout equipments such as track, contact net, communication, signal are installed on same car, are exclusively used in the comprehensive detection of infrastructure.Such EMUs are called comprehensive detection train.
Electronic level: set up the instrument that horizontal line of sight is measured the ground point-to-point transmission discrepancy in elevation, to take automatic compensated level as basis, in telescope light path, increase spectroscope and reader, and adopted bar code scaleplate and image to process the integrated high-tech product of ray machine electrical measurement that electronic system two forms.
Track geometry status measuring instrument: be a kind of portable tool that detects static track irregularity, can detect height, level, distortion, rail to etc. track irregularity parameter, can realize the absolute fix of plan-position and elevation and measure, guarantee the high ride of track circuit and the safety of train and comfortable simultaneously.
Rail checking instrument: be a kind of track geometry dimensional gaughing instrument based on optical fibre gyro precision angle trajectory measurement principle.There is the function that online data analysis and waveform show in real time, realize gauge, superelevation, rail to the detection with the track geometry size such as height.
Track accurate measurement net (CPIII): control one of net foundation pile control net for three grades, be mainly laying non-fragment orbit and operation maintenance control benchmark is provided.Along the three dimensional control network of circuit laying, rise to close in basic plane and control net (CPI) or circuit control net (CPII), testing after general online lower engineering construction completes, is the benchmark of non-fragment orbit laying and operation maintenance.By circuit control net (CPII) or (CPI), draw, be finally closed into CPII or CPI point.Apart from wire center at 3～4 meters.CPIII control point is generally by laying for 60m pair of right and left, and should not be greater than 80m, point position arranges elevation and is not less than orbital plane 0.3m, and be arranged on place firm, reliable, survivable and that be convenient to measure, and antifreeze, anti-settling and anti-movement, control point sign is clear, complete, be convenient to accurately identification and use.
High-speed railway disaster prevention safety monitoring system: being one of important infrastructure guaranteeing the safe operation of high-speed railway special line, is security information collection, the monitoring system of framework on telecommunication transmission system, for train operation and management provides data and foundation.Disaster prevention safety monitoring system comprises wind speed and direction monitoring, rainfall monitoring, snow depth monitoring, earthquake monitoring and foreign body limit-intruding monitoring system.
Roadbed frost heave automatic monitoring system: partly formed by instruction control unit, data acquisition module, wireless communication module, power supply etc.It take microprocessor as core, by analog-and digital-input, output signal, be connected with control appliance with on-the-spot instrument, gather needed each technological parameter, as pressure, displacement etc., utilize programming technique to realize on the spot and control, relevant data is arranged simultaneously, by various communication interfaces, utilize different host-host protocols to pass to central station, roadbed is carried out to system and comprehensively monitor, for the analysis of roadbed frost-heaving deformation provides basic data, for high-speed railway maintenance provides foundation.
Can also comprise that track geometry status measuring instrument detects, its using method is:
1. track geometry status measuring instrument self check
Before each use track geometry status measuring instrument, all need to carry out a self check, operate very simple, only track geometry status measuring instrument same position in orbit need be rotated to exchange, for detection of the precision of how much state measurement instrument of instrument trajectory itself, whether reach requirement.
2. prism is installed
On the CP III point of track geometry state measurement instrument fore-and-aft direction both sides, each installs at least 4 prisms, and prism direction is consistent with track geometry status measuring instrument direction of advance.
3. the use of total powerstation
Total powerstation is propped up at other wire center of same a line apart from track geometry status measuring instrument direction of advance 60～70m, the distance of a pair of adjacent C P III point namely, and by total powerstation centering, leveling.Manually sight furthermost a pair of CP III point, instrument just can be sighted remaining 6 CP III points automatically, because 8 CP III points are all known point, the program that total powerstation carries can be carried out error analysis by 8 CP III points just now sighting, 6 CP III points getting wherein carry out compensating computation, finally determine the position of oneself, the namely coordinate of total powerstation.Total powerstation is just established station and has been completed like this.
4. track geometry status gage data gathers
The collection of track geometry status gage data is a process relatively easily, the mode that can gather according to on-the-spot demand arranging data, generally Cha Qu and 3 in Curve Segment can adopt all modes of data acquisition of every track, and straight line location can gather three points (in two and plate of plate) by a plate.
Track geometry status measuring instrument track geometry status measuring instrument is shifted onto behind place, unclamping rim brake track geometry status measuring instrument is just fixed up, operation track geometry status measuring instrument computer carries out data acquisition, total powerstation can be sighted track geometry state measurement instrument prism automatically, and the data that gather are also stored to computer by RTTY.
5. turn station
When track geometry status measuring instrument, shift onto while approaching total powerstation, turn station.First the prism at the rear of track geometry status measuring instrument is moved on to forefront, then by total powerstation reach 60-70m, centering, leveling, continued the operation of above-mentioned 3,4 steps.
In actual test result, in the swollen regulation process of differential frost heave winter in 2012 to 2013, to find, the serious section in-situ processing of roadbed frost heave workload is very big.In order to ensure 2014 differential frost heave renovating effects, comprehensively analyze 240 place's differential frost heave occurrence positions in 2013 and freeze height (the depth displacement maximum value of frost heave boss and the non-boss of frost heave in 10 meters) situation, before 2013 enter the winter, 37 places are frozen above high culvert more than 4.5mm, and 15 place's differential frost heave concentrate, the larger section of peak value, utilize and exist the railway ballastless track of problem of frost heave to safeguard that processing method carries out pre-backing plate processing.
From differential frost heave in 2014, a situation arises, and in the 30 pre-backing plate sections in culvert top, place, 16 places do not produce I level and the disease that transfinites above, account for 53%, and other pre-backing plate place does not produce
the level disease that transfinites, the visible pre-backing plate of science has played useful effect for regulation differential frost heave.Take downlink 148.022～148.073km as example: on November 22nd, 2013 this place has been carried out to pre-backing plate and processed, pre-mat thickness 5mm, length 76m, by 1/3000, along slope, there is not so far I level and report to the police above in both sides.Application this method, frost heave in 2014 and spring melt and while falling after rise, reduce 100%, 2014 year spring of workload and melt and save 14.16 ten thousand yuan of expensess of labour, within 2015-2016, estimate to save 240,000 yuan of expensess of labour.With the differential frost heave of processing by this method transfinite place, again subjob.
For entering the differential frost heave producing during frost heave after the winter, preferentially adopted and partly removed soleplate method, winter, transfinite place processing operation workload of differential frost heave reduced 50%, spring next year melts falling work for the treatment of amount and reduces 100%,-2014 Spring Festival holidays in 2013 are economized 31.27 ten thousand yuan of expensess of labour, estimate winter in-2015 in 2014 and save 62.38 ten thousand yuan of expensess of labour, with the differential frost heave of processing by this method place subjob again of transfiniting.
The beneficial effect of the embodiment of the present invention is as follows:
One, improve rail smooth, guarantee traffic safety.
According to technical solution of the present invention, solved track inhomogeneous deformation that roadbed and bridges and culverts basis frost heave the causes problem that transfinites, can realize throughout the year, comprise that frost heave and thaw collapse track geometry in season size all do not transfinite, improved the ride comfort of track, train operation comfort level and safety are guaranteed, have guaranteed passenger's safety of life and property.
Two, realize one-stop operation, put things right once and for all.
As long as the depth displacement of frost heave boss and the non-boss of frost heave within the specific limits and position relative fixing, according to technical solution of the present invention, can forever solve the non-fragment orbit inhomogeneous deformation problem of roadbed and the frost heave initiation of bridges and culverts basis, realize one-stop operation, put things right once and for all.
Three, reduce labour intensity, reduce maintenance workload.
Use prior art to need frequent operation, construction repeatedly, especially huge in frost heave and thaw collapse traffic safety in season hidden danger and maintenance workload, operating condition is extremely arduous, sometimes operating environment temperature approaches subzero 40 ℃, uses technical solution of the present invention to overcome above drawback, operation when temperature is comfortable, reduce the workload under severe cold condition, greatly reduced worker's labour intensity and the productive expenditure.
Four, method is easy-to-understand, is beneficial to and popularizes.
Technical solution of the present invention is completely according to existing detection means and equipment, especially at ballastless track of high-speed railway, the basic condition that desired data obtains possesses completely, therefore in worldwide, all can use this method to process track inhomogeneous deformation that roadbed and bridges and culverts basis frost heave the cause problem that transfinites, method of operating is easily understood, feasibility is strong, is easy to promote.
The railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method, and its non-fragment orbit position view as shown in Figure 3, in Fig. 3, comprising: orbital base (1), detection of dynamic positive peak I level transfinite (2), detection of dynamic positive peak
level transfinite (3), detection of dynamic positive peak
level transfinites (4), detection of dynamic negative peak I level transfinites (5), detection of dynamic negative peak I level transfinites (6), detection of dynamic negative peak I level transfinites (7), removes in advance rail top face elevation (9) after rail top face elevation (8) after plate, frost heave.The present invention reduced frost heave boss track elevation in advance according to historical track geometry size and line position parameter before season in frost heave, after winter, circuit froze, reducing the track projection amount of track elevation section will cancel out each other with reducing amount in advance, and realizing dynamic and static detection data does not transfinite.
Concrete operations are: according to historical orbit parameter, in frost heave, before season, reduce in advance frost heave boss track elevation, reducing in advance orbital base elevation of top surface reaches and removes in advance rail top face elevation (8) position after plate, reduce in advance section both sides and carry out along slope operation according to being not less than 1:3000 ratio, guarantee frost heave before season track geometry size do not transfinite.After winter, circuit froze, reduce track elevation section track projection amount and will cancel out each other with reducing amount in advance, rail top face elevation (9) after effectively reducing frost heave and occurring, guarantees that dynamic and static detection data still do not transfinite.After spring thaw collapse, fall after rise to removing in advance rail top face elevation (8) after plate height above rail surface, even if next year, this section frost heave occurred again, still can realize dynamic and static detection physical dimension does not transfinite.
The railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method, its non-fragment orbit position view is as shown in Fig. 4-a and Fig. 4-b, in Fig. 4-a, comprising: orbital base (1), detection of dynamic positive peak I level transfinite (2), detection of dynamic positive peak
level transfinite (3), detection of dynamic positive peak
level transfinites (4), detection of dynamic negative peak I level transfinites (5), detection of dynamic negative peak I level transfinites (6), detection of dynamic negative peak I level transfinites (7), rail top face elevation (9) transversary thing-bridge (10) after rail top face elevation (8), frost heave after pre-backing plate, roadbed (11).
Embodiment of the present invention transition section was raise before season in advance in the frost heave bridge end face track elevation of the non-boss of frost heave, rising bridge beam end orbital base elevation of top surface, after circuit generation in winter frost heave, track depth displacement after the pre-pad of transition section roadbed track frost heave bossing track elevation and beam-ends effectively reduces, and realizing dynamic and static detection physical dimension does not transfinite.
Concrete operations are: the bridge end face to the non-boss of transition frost heave section frost heave carries out pre-backing plate operation, rising bridge beam end orbital base elevation of top surface, reach rail top face elevation (8) position after pre-backing plate, carry out along slope operation according to being not less than 1:3000 ratio pre-pad section both sides, guarantee frost heave before season track geometry size do not transfinite.After winter, circuit froze, the poor effectively reduction of rail top face elevation (8) after transition section roadbed frost heave after the pre-pad of height above rail surface (9) and beam-ends, realizing dynamic and static detection physical dimension does not still transfinite.After spring thaw collapse, fall after rise to entering state before the winter height above rail surface, even if next year, this section frost heave occurred again, still can realize dynamic and static detection physical dimension does not transfinite.
In with reference to Fig. 4-b, comprising: orbital base (1), detection of dynamic positive peak I level transfinite (2), detection of dynamic positive peak
level transfinite (3), detection of dynamic positive peak
level transfinites (4), detection of dynamic negative peak I level transfinites (5), detection of dynamic negative peak I level transfinites (6), detection of dynamic negative peak I level transfinites (7), rail top face elevation (8), transversary thing-culvert (9), roadbed (10) after pre-backing plate.The present invention satisfies the need and contains the pre-backing plate operation of culvert jacking row of the non-boss of transition frost heave, raise in advance and contain top track baseline elevation of top surface (8), carry out along slope operation according to being not less than 1:3000 ratio pre-pad section both sides, guarantee frost heave before season track geometry size do not transfinite.After culvert in winter both sides roadbed section track has frozen, rail top face elevation (11) pushes up the poor effectively reduction of rail top face elevation (8) after pre-pad with culvert, and realizing dynamic and static detection physical dimension does not transfinite.
Concrete operations are: satisfy the need and contain the pre-backing plate operation of culvert jacking row of the non-boss of transition frost heave, raise in advance and contain top track baseline (1) to elevation of top surface (8), carry out along slope operation according to being not less than 1:3000 ratio pre-pad section both sides, guarantee frost heave before season track geometry size do not transfinite.After culvert in winter both sides roadbed section track has frozen, rail top face elevation (11) pushes up the poor effectively reduction of rail top face elevation (8) after pre-pad with culvert, and realizing dynamic and static detection physical dimension does not still transfinite.After spring thaw collapse, fall after rise to entering state before the winter height above rail surface, even if next year, this section frost heave occurred again, still can realize dynamic and static detection physical dimension does not transfinite.
The railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method, and its non-fragment orbit position view as shown in Figure 5, in Fig. 5, comprising: orbital base (1), detection of dynamic positive peak I level transfinite (2), detection of dynamic positive peak
level transfinite (3), detection of dynamic positive peak
level transfinites (4), detection of dynamic negative peak I level transfinites (5), detection of dynamic negative peak I level transfinites (6), detection of dynamic negative peak I level transfinites (7), rail top face elevation (8) after pre-backing plate, frozen rail top face elevation (9) afterwards.The present invention carries out pre-backing plate operation to the non-boss of roadbed continuous and uneven frost heave section frost heave before entering the winter, the non-boss track of the frost heave that raises in advance elevation, after there is frost heave projection in both sides, Yu Dian in winter district, boss rail top face elevation effectively reduces with the rail top face depth displacement of pre-pad section, and realizing dynamic and static detection physical dimension does not transfinite.
Concrete operations are: the non-boss of roadbed continuous and uneven frost heave section frost heave is carried out to pre-backing plate operation, raise orbital base (1) in advance to elevation of top surface (8) position, carry out along slope operation according to being not less than 1:3000 ratio pre-pad section both sides, guarantee frost heave before season track geometry size do not transfinite.After Yu Dian in winter district two siding track generation frost heave projections, rail top face elevation (8) difference after frost heave after rail top face elevation (9) and pre-pad will effectively reduce, and realizing dynamic and static detection physical dimension does not still transfinite.After spring thaw collapse, fall after rise to entering state before the winter height above rail surface, even if next year, this section frost heave occurred again, still can realize dynamic and static detection physical dimension does not transfinite.
The railway ballastless track that has problem of frost heave of the embodiment of the present invention is safeguarded processing method, its non-fragment orbit position view as shown in Figure 6, in Fig. 6, comprising: orbital base (1), detection of dynamic height positive peak I level transfinite (2), detection of dynamic height positive peak
level transfinites (3), detection of dynamic height positive peak
rail top face elevation (8) after level transfinites (4), detection of dynamic height negative peak I level transfinites (5), detection of dynamic height negative peak I level transfinites (6), detection of dynamic height negative peak I level transfinites (7), frost heave, remove rail top face elevation (9) after plate, fall after rise after rail top face elevation (10).
Differential frost heave of the present invention is withdrawn from after occurring and when part backing plate principle transfinites for the disease of processing dynamic and static detection and finding, is removed plate operation, remove plate amount and be half left and right of value of transfiniting, after frost heave and thaw collapse are stable, the dynamic and static detection physical dimension of this frost heave section does not transfinite.Even if next year, this section frost heave occurred again, still can realize dynamic and static detection physical dimension does not transfinite.
Concrete operations are: rail top face elevation (8) after frost heave is carried out to part and remove plate operation, after removing plate, part reaches rail top face elevation (9) position, guarantee that frost heave track geometry in season size does not transfinite, after thaw collapse is stable, rail top face elevation (9) position will become falls rear rail top face elevation (10) after rise, and dynamic and static detection physical dimension does not still transfinite.Even if next year, this section frost heave occurred again, height above rail surface reaches rail top face elevation (8) after frost heave, and detecting data physical dimension does not still transfinite.
Exist the railway ballastless track of problem of frost heave to safeguard a treating apparatus, described device comprises:
Road surface parameter acquiring device, for obtaining described non-fragment orbit then and track geometry dimensional parameters and line position parameter over the years;
Division of period orbit device, for non-fragment orbit being divided into frost heave boss and the non-boss of frost heave according to described track geometry size over the years and line position parameter, to be non-fragment orbit produce protruding position season in frost heave to frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave;
The first track regulator, for raise frost heave non-boss track elevation or reduce frost heave boss track elevation before season in frost heave, reduces frost heave boss track elevation season in frost heave.
Preferably, described the first track regulator comprises:
Depth displacement getter, for obtaining roadbed and bridges and culverts basis frost heave, cause the first depth displacement and second depth displacement of track, described the first depth displacement is frost heave track in season elevation and default track elevation difference, and described the second depth displacement is the track depth displacement of frost heave boss and the non-boss of frost heave;
The second track regulator, for according to described the first depth displacement and the second depth displacement at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
Preferably, described the second track regulator comprises:
Cushion block quantity getter, for obtaining backing plate quantity N according to the depth displacement of described frost heave boss and the non-boss of frost heave, prescribed threshold, backing plate height and service condition, wherein N is more than or equal to 0 integer;
The 3rd track regulator reduces N piece backing plate below increasing N piece backing plate or frost heave boss rail before frost heave season below the non-boss rail of frost heave;
The 4th track regulator, for reducing N piece backing plate season below frost heave boss rail in frost heave.
Preferably, described device also comprises:
Standard adjuster, be used for utilizing described track geometry dimensional parameters partly to reduce boss track elevation season in frost heave, guarantee track geometry dimensional parameters after thaw collapse still in < < standard > > allowed band.
Preferably, described device also comprises:
Described device also comprises:
The 5th track regulator, for utilizing described track geometry dimensional parameters and line position parameter at the frost heave non-boss track elevation that raises season.
Claims (7)
1. one kind exists the railway ballastless track of problem of frost heave to safeguard processing method, it is characterized in that, as long as the depth displacement of frost heave boss and the non-boss of frost heave within the specific limits and position relative fixing, use this method one-stop operation can forever solve the non-fragment orbit inhomogeneous deformation problem of roadbed and the frost heave initiation of bridges and culverts basis, described method comprises:
Obtain described non-fragment orbit then and track geometry dimensional parameters over the years and line position parameter;
According to described track geometry size and line position parameter, non-fragment orbit is divided into frost heave boss and the non-boss of frost heave, to be non-fragment orbit produce protruding position season in frost heave to frost heave boss, and to be non-fragment orbit do not produce protruding position season in frost heave to the non-boss of described frost heave.
2. at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
3. the railway ballastless track of problem of frost heave that exists as claimed in claim 1 is safeguarded processing method, it is characterized in that, described at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season, comprising:
Obtain the first depth displacement and the second depth displacement that roadbed and bridges and culverts basis frost heave cause track, described the first depth displacement is frost heave track in season elevation and default track elevation difference, and described the second depth displacement is the track depth displacement of frost heave boss and the non-boss of frost heave;
According to described the first depth displacement and the second depth displacement, at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season.
4. the railway ballastless track of problem of frost heave that exists as claimed in claim 2 is safeguarded processing method, it is characterized in that, described according to described the first depth displacement and the second depth displacement at raise before season frost heave non-boss track elevation or reduce frost heave boss track elevation of frost heave, in frost heave, reduce frost heave boss track elevation season, comprising:
Obtain depth displacement and the backing plate quantity of frost heave boss and the non-boss of frost heave;
According to the depth displacement of described frost heave boss and the non-boss of frost heave, prescribed threshold, backing plate height and service condition, obtain backing plate quantity N, wherein N is more than or equal to 0 integer;
Frost heave reduces N piece backing plate below increasing N piece backing plate or frost heave boss rail before season below the non-boss rail of frost heave.
5. in frost heave, below frost heave boss rail, reduce N piece backing plate season.
6. the railway ballastless track of problem of frost heave that exists as claimed in claim 1 is safeguarded processing method, it is characterized in that, described method also comprises:
Utilize described track geometry dimensional parameters partly to reduce boss track elevation season in frost heave, guarantee track geometry dimensional parameters be no matter frost heave season or in thaw collapse season all the time in < < standard > > allowed band.
7. the railway ballastless track of roadbed and bridges and culverts basis problem of frost heave that exists as claimed in claim 1 is safeguarded processing method, it is characterized in that, described method also comprises:
Utilize described track geometry dimensional parameters and line position parameter at the frost heave non-boss track elevation that raises season.
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| CN109297398A (en) * | 2018-11-14 | 2019-02-01 | 中国铁路沈阳局集团有限公司科学技术研究所 | A kind of monitoring of railway bed frost heave and analysis system based on Beidou location technology |
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| CN104032631B (en) | 2016-08-17 |
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