CN106320106A - Seamless track locking construction method of embedded type continuous supporting ballastless track system - Google Patents
Seamless track locking construction method of embedded type continuous supporting ballastless track system Download PDFInfo
- Publication number
- CN106320106A CN106320106A CN201610716404.XA CN201610716404A CN106320106A CN 106320106 A CN106320106 A CN 106320106A CN 201610716404 A CN201610716404 A CN 201610716404A CN 106320106 A CN106320106 A CN 106320106A
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- unit
- locking
- temperature
- unit rail
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- 238000010276 construction Methods 0.000 title claims abstract description 106
- 238000003466 welding Methods 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 7
- 241001669679 Eleotris Species 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000002372 labelling Methods 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 description 6
- 230000005070 ripening Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000003832 thermite Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229940067573 brown iron oxide Drugs 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002977 hyperthermial effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- IXHBTMCLRNMKHZ-LBPRGKRZSA-N levobunolol Chemical compound O=C1CCCC2=C1C=CC=C2OC[C@@H](O)CNC(C)(C)C IXHBTMCLRNMKHZ-LBPRGKRZSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B35/00—Applications of measuring apparatus or devices for track-building purposes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a seamless track locking construction method of an embedded type continuous supporting ballastless track system. The seamless track locking construction method comprises: laying a track, welding a unit track, releasing stress, investigating track temperature, locking the unit track, pouring high polymers, removing locking, locking and welding, and carrying out circulating treatment in sequence until one construction section is finished and seamless track locking construction of the whole embedded type continuous supporting ballastless track system is finished. By adopting the seamless track locking construction method of the embedded type continuous supporting ballastless track system, provided by the invention, the seamless track locking construction effect of the embedded type continuous supporting ballastless track system is improved, and the cost of engineering construction assistance measures is reduced; seamless track locking track temperature of the embedded type continuous supporting ballastless track system is within a designed locking track temperature range.
Description
Technical field
The present invention relates to embedded continuous support non-fragment orbit technical field, more particularly, relate to a kind of embedded company
The continuous gapless track locking construction method supporting ballastless track system.
Background technology
Embedded continuous support non-fragment orbit has good damping result, uses continuous supporting way, reduces the different of rail
Ordinary wave grinds, and extends the service life of rail, has obtained the consistent accreditation of domestic expert, has obtained the most at home sending out rapidly
Exhibition.
Rail is embedded in rail support groove by embedded tracks, cast macromolecular material ripening locking rail, Macromolecular pouring
It is accomplished to ripening locking rail, needs certain time interval.In this time interval, the rail temperature of Rail temperature must fall
In the range of design fastening-down temperature of rail, cause in one day and can shorten time of construction operation, the construction effect step-down of a day, and Rail
Temperature is at any time in change, it is difficult to ensure that the actual lock rail temperature of rail is in the range of design fastening-down temperature of rail, in order to ensure the lock of rail
Orbit determination temperature is in the range of design fastening-down temperature of rail, it is necessary to use certain engineering ancillary method, such as scaffolding cooling in summer, puts up a shed winter
Heating up, Construction Cost is big.
Comparing conventional fastener formula track, after embedded tracks rail fastening down, the later stage is difficult to again carry out destressing, therefore
Requirement to the construction of embedded tracks gapless track is particularly severe.
Summary of the invention
In order to solve problems of the prior art, it is an object of the invention to provide a kind of embedded continuous support without the tiny fragments of stone, coal, etc.
The gapless track locking construction method of rail system.
The invention provides the gapless track locking construction method of a kind of embedded continuous support ballastless track system, described
Construction method comprises the following steps:
A, lay a railway track: after embedded tracks railway roadbed and track slab construction complete, along circuit longitudinally spaced at track plates
Intermediate groove in arrange several chocks and by described chock horizontal path direction place, afterwards by short rail successively along circuit
Direction is shelved on chock；
B, unit rail are welded: use aluminum weld mode successively the short rail that some adjacent to be welded into unit rail；
C, destressing: arrange several pad rollers in the groove district of track plates spaced abovely, unit rail is placed
On pad roller, make unit rail be in free retracted position, utilize the rail-impacting block being arranged on unit rail one end that unit rail is carried out
Clash into and complete destressing when the other end of unit rail occurs vibration, subsequently unit rail being sequentially placed in rail groove also
Some root unit rails are divided into construction section；
D, rail temperature are investigated: determine the locking engineering time section of unit rail according to weather condition on the same day, lock engineering time section
Inside require unit rail rail temperature in the range of design fastening-down temperature of rail, design fastening-down temperature of rail scope by designing unit according to year of construction ground
The highest rail temperature determines with minimum rail temperature.
E, lock cell rail: in described locking engineering time section and when the rail temperature of unit rail falls in described design locking
Time in the range of rail temperature, installation unit rail locking tool lock cell rail in the range of the certain length of unit rail two ends, wherein,
The frock lock room that region is unit rail of locking tool is installed at unit rail two ends, does not installs the district of locking tool in the middle part of unit rail
Territory is the fixed area of unit rail.
F, Macromolecular pouring: the fixed area of described unit rail is carried out Macromolecular pouring；
G, dismounting locking: after the polymer surface hardness in the fixed area of described unit rail is up to standard, remove described
The locking tool of unit rail；
H, circular treatment: repeat step E to G, the unit rail being sequentially completed in independent construction section locking construction；Its
In, when i+1 the unit rail of one independent construction section being carried out locking construction, by one independent construction section
I+1 unit rail carries out aluminum weld, in i+1 unit rail with i-th unit rail in one independent construction section
Free end installs locking tool, locks i+1 unit rail, and the fixed area to i+1 unit rail carries out macromolecule and waters subsequently
Note, removes i+1 unit rail locking tool, is sequentially completed the gapless track locking construction of one independent construction section, its
In, i is the positive integer between 1 to n, and n is the unit rail quantity in one independent construction section；
I, locking welding: use aluminum weld mode that described independent construction section carries out locking weldering with adjacent construction section rail
Connect until completing the gapless track locking construction of whole embedded continuous support ballastless track system.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, in step, the spacing between described chock is 10～15m；When placing short rail, short rail is arranged as along circuit side
To two row short rails and the short rail of each column in adjacent short rail end to end, described short rail refers to that full-length is 12.5m or 25m
Rail；In stepb, described unit rail a length of 200～300m；In step C, described construction section a length of 1～
2km, when placement unit rail, is arranged as the adjacent list in the two row rails and each column rail of line direction by unit rail
Unit's rail is end to end.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, in step C, the spacing between described pad roller is 10～15m and described pad roller is across being arranged on described rail
On road groove.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, the unit rail carried out after described construction method is additionally included in step C and before step D cleaning descaling step, noise reduction block
With retainer installation steps, rail groove cleanup step, resilient sleeper-bearing or height adjusting cushion plate installation steps and unit rail fine tuning step.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, in step D, the design fastening-down temperature of rail scope of described unit rail is T ± 3～5 DEG C, and wherein, T is the year the highest rail of construction ground
The intermediate value rail temperature of Wen Yunian minimum rail temperature；When determining the locking engineering time section of unit rail, it is ensured that during described locking construction
Between temperature in section fall in the range of described design fastening-down temperature of rail.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, in step E, a length of the 40～50m of described frock lock room, the spacing between described locking tool is 3～5m, its
In, described locking tool to the side generation normal pressure of unit rail side and rail groove and forms unit rail longitudinally resistance by extruding
Power carrys out lock cell rail, and the rail longitudinal resistance that each locking tool provides is not less than 50kN and meets the locking of the rail temperature difference 40 DEG C
Requirement.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, described construction method also includes the step of acquiring unit rail actual lock rail temperature, specifically includes following sub-step:
The interim displacement observation of labelling: the same cross section place at unit rail two ends is respectively provided with about steel rail displacement and observes
Chi, wherein, described steel rail displacement left and right sight gauge is separately positioned on outside the tread of unit rail and the end face of track plates；
Measuring unit rail rail temperature: before lock cell rail, uses the mode acquiring unit rail that multi-point temperature measurement is averaged
Rail temperature and record the steel rail displacement left and right sight gauge reading at described unit rail two ends；
The actual lock rail temperature of computing unit rail: after removing locking, record the steel rail displacement at described unit rail two ends
Left and right sight gauge reading, utilizes the rail length variable quantity before and after the unit rail rail gentleness lock cell rail before lock cell rail
Calculating the actual lock rail temperature of described unit rail, wherein, the actual lock rail temperature temperature difference controlled between adjacent cells rail is not more than 5
DEG C and high rail rail temperature must not be higher than interior rail rail temperature.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, is calculated actual lock rail temperature t of described unit rail according to following formula 10:
Wherein, L is the original length of unit rail；α is the linear expansion coefficient of unit rail, takes 1.06 × 10-5/℃；t1For list
Rail temperature before unit's rail locking；L1The steel rail displacement left and right sight gauge reading at unit rail two ends before locking for unit rail；L2For list
The steel rail displacement left and right sight gauge reading at unit rail two ends after unit's rail locking.
One enforcement of the gapless track locking construction method according to the embedded continuous support ballastless track system of the present invention
Example, in steph, when the fixed area of i+1 the unit rail to one independent construction section carries out Macromolecular pouring, will
The frock lock room of i-th unit rail is incorporated to the fixed area of i+1 unit rail and carries out Macromolecular pouring together.
Compared with prior art, the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
Can, improve embedded continuous support ballastless track system gapless track construction effect, reduce engineering construction ancillary method and become
This, it is ensured that ensure that the gapless track fastening-down temperature of rail of embedded continuous support ballastless track system is in design fastening-down temperature of rail scope.
Accompanying drawing explanation
The technique that Fig. 1 shows the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
Flow chart.
Fig. 2 shows the short-and-medium rail of gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
The view shelved.
Fig. 3 shows the highest rail temperature in district, minimum rail temperature, the mid-rail gentleness maximum rail temperature difference in all parts of the country.
Fig. 4 shows in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention and locks
The structure diagram of frock.
Fig. 5 shows in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention and locks
The operation process chart of unit rail.
Fig. 6 shows high score in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
The operation process chart of son cast.
Description of reference numerals:
1-track plates, 2-rail groove, 3-chock, the short rail of 4-, 5-jack, 6-the first wedge, 7-the second wedge.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification, unless specifically stated otherwise, all can by other equivalence or there is similar purpose
Alternative features is replaced.I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics
?.
Below the gapless track locking construction method of continuous support ballastless track system embedded to the present invention is carried out in detail
Thin explanation.
The technique that Fig. 1 shows the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
Flow chart.
According to the exemplary embodiment of the present invention, the gapless track locking of described embedded continuous support ballastless track system
Construction method includes following multiple step.
Step A: lay a railway track
After embedded tracks railway roadbed and track plates 1 have been constructed, along circuit longitudinal direction compartment of terrain at track plates 1
Arrange several chocks 3 in intermediate groove and chock 3 horizontal path direction is placed, afterwards by short rail 4 successively along circuit side
To being shelved on chock 3.
Fig. 2 shows the short-and-medium rail of gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
The view shelved, the form of specifically shelving of short rail is as shown in Figure 2.Wherein, the spacing between chock be preferably 10～
15m.Further, when placing short rail, be arranged as by short rail in the two short rails of row and the short rail of each column of line direction is adjacent
Short rail is end to end.In the present invention use short rail be full-length be the rail of 12.5m or 25m.
After embedded rail site acceptance, select to determine that rail is stacked in beta site.Stacking need to be layered during rail stacking type
Neatly, bottom uses chock to support, it is desirable to terrain clearance is not less than 200mm, and every layer of chock using 100mm × 100mm separates,
The chock directly utilizing this 100mm × 100mm afterwards carries out shelving of short rail 4.
Rail uses flat car to be transported to scene, and utilizes crane to be placed to chock by rail, should use up during handling
Amount prevents rail from producing plasticity change..
Step B: unit rail is welded
Use aluminum weld mode that the short rail that some adjacent is welded into the unit rail with predetermined length successively.
It is different from the lock rail mode of fastener type track, in rail is embedded into rail groove by embedded tracks and by cast height
Molecular material ripening locking rail.Therefore, before gapless track locking construction, need to be according to the overall peace of line condition and construction
Row, rationally determines and has divided position and the length of unit rail in track site plan, and the division of unit rail need to be examined
Considering the factors such as crossing, bridge and culvert, the joint between unit rail uses cast-in-place railway roadbed.Preferably, the length of unit rail is by setting
Meter unit design determines, generally 200～300m.
Aluminum weld is to use chemical reaction heat as the welding method of thermal source.During welding, in advance the end of two workpiece to be welded
Head is fixed in casting mold, heats in then aluminium powder and brown iron oxide mixture (title thermite) being placed on crucible, is allowed to occur also
Former exothermic reaction, becomes liquid metal (ferrum) and slag (predominantly Al2O3), inject casting mold.Liquid metal flows into joint leakage shape
Become weld metal, on slag then floats on the surface.In order to adjust melt temperature and metal chemical composition, often add in thermite
Enter appropriate additive and alloy.Aluminum weld has that equipment is simple, easy to use, need not the features such as power supply, is usually used in steel
The welding of rail, reinforcing bar and other great section workpieces.The present invention is then the method for two one steel rail aluminum weld to be coupled together, from
And form gapless rail.Wherein, exothermic welding scoops out wanting of satisfied " rail welding third portion aluminum weld " (TB/T 1632.3)
Ask.
Step C: destressing
On the rail groove 2 of track plates 1, several pad roller (not shown) are arranged in compartment of terrain, unit rail are placed and are propping up
Padding on roller and make unit rail reach free retracted position, wherein, the spacing between pad roller is 10～15m and pad rolling
Wheel is across being arranged on rail groove 2.Utilize be arranged on the rail-impacting block (not shown) of unit rail one end unit rail is clashed into
Stress within releasing unit rail, and complete destressing, subsequently by unit rail when the other end of unit rail occurs vibration
It is sequentially placed in rail groove and some root unit rails are divided into the construction section with predetermined length.
Wherein, the length of construction section rationally determines according to line condition and Planning of construction periods, generally 1～2km and, putting
When putting unit rail, adjacent cells rail head and the tail unit rail being arranged as in the two row rails and each column rail of line direction
Connect to form continuous welded rail track by welding follow-up.
As it is shown in figure 1, the list carried out after the construction method of the present invention is additionally may included in step C and before step D
Unit's rail cleaning descaling step, noise reduction block and retainer installation steps, rail groove cleanup step, resilient sleeper-bearing or height adjusting cushion plate are installed
Step and unit rail fine tuning step.But it is critical only that of the inventive method locks construction part, the most not to above-mentioned conventional step
The most too much limit.
Step D: rail temperature is investigated
Determine the locking engineering time section of unit rail according to weather condition on the same day, in locking engineering time section, require unit rail
Rail temperature in the range of design fastening-down temperature of rail, design fastening-down temperature of rail scope by designing unit according to the year the highest rail temperature and of construction ground
Low rail temperature determines.
The purpose of choosing of engineering time section determined by monolock is to choose suitable fastening-down temperature of rail according to weather forecast, makes locking construct
Meet the requirement of design fastening-down temperature of rail scope.And the selection designing fastening-down temperature of rail scope is that the difference according to region is different
, specifically, design fastening-down temperature of rail scope can be come by the mid-rail temperature of the year of construction ground the highest rail gentleness year minimum rail temperature
Determine.
Specifically, the design fastening-down temperature of rail scope of unit rail can be set as T ± 3～5 DEG C, and wherein, T is the year of construction ground
The intermediate value rail temperature of the highest rail Wen Yunian minimum rail temperature.Further, when determining the locking engineering time section of unit rail, it is ensured that locking
Temperature in engineering time section falls in the range of above-mentioned design fastening-down temperature of rail.
Fig. 3 shows the highest rail temperature in district, minimum rail temperature, the mid-rail gentleness maximum rail temperature difference in all parts of the country.With Chengdu it is
Example: mid-rail temperature is 27.1 degrees Celsius, it is considered to the operability of construction, can set fastening-down temperature of rail is in the range of 27.1 ± 3 DEG C
Can.And the mid-rail temperature in Harbin is 8.9 DEG C, then the design fastening-down temperature of rail in Harbin also should be lower than Chengdu.That is, choose unit
Rail locking engineering time section be contemplated to allow construction this period of time in ambient temperature all in the range of design fastening-down temperature of rail, from
And ensure that locking construction meets the requirements.Because the mid-rail temperature of various places is different, therefore the design fastening-down temperature of rail scope chosen is the most different.
In this step, it is also possible to the geometry state of unit rail, field welding joints quality etc. are checked, really comprehensively
Recognize without hidden danger of quality.
Step E: lock cell rail
When locking in engineering time section and falling in the range of described design fastening-down temperature of rail when the rail temperature of unit rail, at list
Installation unit rail locking tool lock cell rail in the range of unit's rail two ends certain length.The purpose of locking is to ensure that macromolecule waters
Note is accomplished in the time interval of ripening locking rail, and the rail temperature of rail is in the range of design fastening-down temperature of rail.
Fig. 5 shows in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention and locks
The operation process chart of unit rail.As it is shown in figure 5, for an independent construction section, preferably by the construction party being connected into locking
Formula, the most first the 1st unit rail is locked, Macromolecular pouring, unlock, the 2nd unit rail even, then is entered by unit rail weldering
Row locking, Macromolecular pouring, unlock, unit rail weldering even, by that analogy, carry out the locking weldering between construction section the most again
Connect, be consequently formed the gapless track of entirety.
During locking, locking tool the rail that locks are installed in the range of the certain length of unit rail two ends, wherein, in unit rail
The frock lock room that region is unit rail of locking tool is installed at two ends, does not installs the region of locking tool for single in the middle part of unit rail
The fixed area of unit's rail.Wherein, the length of unit rail frock lock room is 40～50m, the spacing between locking tool be 3～
5m。
Specifically, the locking tool in the present invention produces normal pressure by extruding to the side of unit rail side and rail groove
And form unit rail longitudinal resistance and carry out lock cell rail, the rail longitudinal resistance that each locking tool provides is not less than 50kN, full
The locking requirement of the foot rail temperature difference 40 DEG C.
Fig. 4 shows in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention and locks
The structure diagram of frock, as shown in Figure 4, the locking tool of the present invention can use this structure, locking principle: jack 1 jacking
During, the first wedge is fixed, and the second wedge moves up, and is produced rail side and side, track board slot district by extruding
Raw normal pressure also forms rail longitudinal resistance, locks rail.But the locking tool of the present invention is not limited to this structure, as long as can be real
The locking of existing track.
During unit rail locking, fastening-down temperature of rail should meet design requirement, specifically can use the side that multimetering is averaged
Formula obtains fastening-down temperature of rail.When fastening-down temperature of rail is not when designing in the range of fastening-down temperature of rail, should be adjusted and relock；Further,
The poorest no more than 5 DEG C of the fastening-down temperature of rail between adjacent cells rail should be controlled, and high rail rail temperature must not be higher than interior rail.Summer surpasses
When crossing fastening-down temperature of rail, rail need to be thermally shielded cooling and process；When winter, rail temperature was too low, carry out drawing rail or hyperthermic treatment.
Step F: Macromolecular pouring
The fixed area of unit rail is carried out Macromolecular pouring.
Step G: remove locking
After the polymer surface hardness in the fixed area of described unit rail is up to standard, remove the locking work of unit rail
Dress.
Wherein, with reference to GB/T 6031, polymer surface is carried out hardness determination, when hardness reaches 50 degree, removable
Except locking tool.
Step H: circular treatment
Repeat step E to G, the unit rail being sequentially completed in independent construction section locking construction；Wherein, to described one
When i+1 the unit rail of individual independent construction section carries out locking construction, by i+1 unit rail in one independent construction section
Carrying out aluminum weld with i-th unit rail in one independent construction section, the free end in i+1 unit rail installs locking
Frock, locks i+1 unit rail, and the fixed area to i+1 unit rail carries out Macromolecular pouring subsequently, removes i+1
Unit rail locking tool, is sequentially completed the gapless track locking construction of one independent construction section, and wherein, i is between 1 to n
Positive integer, n is the unit rail quantity in one independent construction section.
Step I: locking welding
Aluminum weld mode is used described independent construction section to carry out locking welding with adjacent construction section rail until completing
The gapless track locking construction of whole embedded continuous support ballastless track system.During locking welding, Rail temperature should be in design
In the range of fastening-down temperature of rail.
Fig. 6 shows high score in the gapless track locking construction method of the embedded continuous support ballastless track system of the present invention
The operation process chart of son cast.As shown in Figure 6, the fixed area in i+1 the unit rail to an independent construction section carries out height
During molecule cast, the frock lock room of i-th unit rail is incorporated to the fixed area of i+1 unit rail and carries out macromolecule together and water
Note.
According to one embodiment of present invention, above-mentioned construction method also includes the step of acquiring unit rail actual lock rail temperature
Suddenly, can be determined that whether gapless track locking construction meets and set by actual lock rail temperature and design fastening-down temperature of rail are compared
Meter requirement.
Specifically, it includes following sub-step:
The interim displacement observation of labelling: the same cross section place at unit rail two ends is respectively provided with about steel rail displacement and observes
Chi, wherein, steel rail displacement left and right sight gauge is separately positioned on outside the tread of unit rail and the end face of track plates.Steel rail displacement is left
Right sight gauge includes left chi and right chi, such as, is fixed in unit rail by left chi, is fixed on track plates by right chi, due to rail
Guidance tape is fixing, and unit rail can occur length to change after locking construction, thus can be with the length of sensing element rail one end
Variable quantity.
Measuring unit rail rail temperature: before lock cell rail, uses the mode acquiring unit rail that multi-point temperature measurement is averaged
Rail temperature and record the steel rail displacement left and right sight gauge reading at unit rail two ends.
The actual lock rail temperature of computing unit rail: after removing locking, about the steel rail displacement at record unit rail two ends
Sight gauge reading, utilizes the rail length variable quantity before and after the unit rail rail gentleness lock cell cabinet before lock cell rail to calculate
The actual lock rail temperature of described unit rail.Wherein, the rail length variable quantity before and after lock cell cabinet is unit rail and locks it
Before the steel rail displacement left and right sight gauge reading at rear unit rail two ends and unit rail locking about the steel rail displacement at unit rail two ends
The difference of sight gauge reading.
Specifically, actual lock rail temperature t of unit rail can be calculated according to following formula 10:
Wherein, L is the original length of unit rail；α is the linear expansion coefficient of unit rail, takes 1.06 × 10-5/℃；t1For list
Rail temperature before unit's rail locking；L1The steel rail displacement left and right sight gauge total indicator reading at unit rail two ends before locking for unit rail；L2For
The steel rail displacement left and right sight gauge reading at unit rail two ends after unit rail locking.
In sum, the construction of embedded continuous support non-fragment orbit gapless track improves embedded continuous support without tiny fragments of stone, coal, etc. rail
Road system gapless track construction effect, reduces engineering construction ancillary method cost, it is ensured that embedded continuous support non-fragment orbit
The gapless track fastening-down temperature of rail of system is in the range of design fastening-down temperature of rail.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any disclose in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (9)
1. the gapless track locking construction method of an embedded continuous support ballastless track system, it is characterised in that described in execute
Work method comprises the following steps:
A, lay a railway track: after embedded tracks railway roadbed and track slab construction complete, along circuit longitudinally spaced in track plates
Between arrange several chocks in groove and described chock horizontal path direction placed, afterwards by short rail successively along line direction
It is shelved on chock；
B, unit rail are welded: use aluminum weld mode successively the short rail that some adjacent to be welded into unit rail；
C, destressing: arrange several pad rollers in the groove district of track plates spaced abovely, unit rail is placed in pad
On roller, make unit rail be in free retracted position, utilize the rail-impacting block being arranged on unit rail one end that unit rail is clashed into
And complete destressing when the other end of unit rail occurs vibration, if unit rail being sequentially placed in rail groove subsequently and inciting somebody to action
Dry root unit rail is divided into construction section；
D, rail temperature are investigated: determine the locking engineering time section of unit rail according to weather condition on the same day, want in locking engineering time section
Asking unit rail rail temperature in the range of design fastening-down temperature of rail, design fastening-down temperature of rail scope is the highest according to the year of construction ground by designing unit
Rail temperature determines with minimum rail temperature.
E, lock cell rail: in described locking engineering time section and when the rail temperature of unit rail falls at described design fastening-down temperature of rail
In the range of time, installation unit rail locking tool lock cell rail in the range of the certain length of unit rail two ends, wherein, at unit
The frock lock room that region is unit rail of locking tool is installed at rail two ends, and the region not installing locking tool in the middle part of unit rail is
The fixed area of unit rail.
F, Macromolecular pouring: the fixed area of described unit rail is carried out Macromolecular pouring；
G, dismounting locking: after the polymer surface hardness in the fixed area of described unit rail is up to standard, remove described unit
The locking tool of rail；
H, circular treatment: repeat step E to G, the unit rail being sequentially completed in independent construction section locking construction；Wherein, exist
When i+1 the unit rail of one independent construction section is carried out locking construction, by i+1 in one independent construction section
Individual unit rail carries out aluminum weld, at the free end of i+1 unit rail with i-th unit rail in one independent construction section
Installing locking tool, lock i+1 unit rail, the fixed area to i+1 unit rail carries out Macromolecular pouring subsequently, removes
I+1 unit rail locking tool, is sequentially completed the gapless track locking construction of one independent construction section, and wherein, i is 1
Positive integer between n, n is the unit rail quantity in one independent construction section；
I, locking welding: use aluminum weld mode that described independent construction section carries out locking welding with adjacent construction section rail straight
Construction is locked to the gapless track completing whole embedded continuous support ballastless track system.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Being characterised by, in step, the spacing between described chock is 10～15m；When placing short rail, short rail is arranged as along
Adjacent short rail in the two short rails of row of line direction and the short rail of each column is end to end, and described short rail refers to that full-length is
The rail of 12.5m or 25m；In stepb, described unit rail a length of 200～300m；In step C, the length of described construction section
Degree is 1～2km, when placement unit rail, unit rail is arranged as in the two row rails and each column rail of line direction
Adjacent cells rail end to end.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Being characterised by, in step C, the spacing between described pad roller is 10～15m and described pad roller is across being arranged on
On described rail groove.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
It is characterised by, the unit rail that carries out after described construction method is additionally included in step C and before step D cleaning descaling step,
Noise reduction block and retainer installation steps, rail groove cleanup step, resilient sleeper-bearing or height adjusting cushion plate installation steps and unit rail essence
Pacing is rapid.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Being characterised by, the design fastening-down temperature of rail scope of described unit rail is T ± 3～5 DEG C, wherein, T be construction ground year the highest rail temperature with
The intermediate value rail temperature of year minimum rail temperature；When determining the locking engineering time section of unit rail, it is ensured that described locking engineering time section
Interior temperature falls in the range of described design fastening-down temperature of rail.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Be characterised by, in step E, a length of the 40～50m of described frock lock room, the spacing between described locking tool be 3～
5m, wherein, described locking tool is produced normal pressure by extruding to the side of unit rail side and rail groove and forms unit rail
Longitudinal resistance carrys out lock cell rail, and the rail longitudinal resistance that each locking tool provides is not less than 50kN and meets the rail temperature difference 40 DEG C
Locking requirement.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Being characterised by, described construction method also includes the step of acquiring unit rail actual lock rail temperature, specifically includes following sub-step:
The interim displacement observation of labelling: the same cross section place at unit rail two ends is respectively provided with steel rail displacement left and right sight gauge, its
In, described steel rail displacement left and right sight gauge is separately positioned on outside the tread of unit rail and the end face of track plates；
Measuring unit rail rail temperature: before lock cell rail, the rail of the mode acquiring unit rail that employing multi-point temperature measurement is averaged
Temperature also records the steel rail displacement left and right sight gauge reading at described unit rail two ends；
The actual lock rail temperature of computing unit rail: after removing locking, record about the steel rail displacement at described unit rail two ends
Sight gauge reading, utilizes the rail length variable quantity before and after the unit rail rail gentleness lock cell rail before lock cell rail to calculate
The actual lock rail temperature of described unit rail, wherein, control the actual lock rail temperature temperature difference between adjacent cells rail be not more than 5 DEG C and
High rail rail temperature must not be higher than interior rail rail temperature.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 7, its
It is characterised by, is calculated actual lock rail temperature t of described unit rail according to following formula 10:
Wherein, L is the original length of unit rail；α is the linear expansion coefficient of unit rail, takes 1.06 × 10-5/℃；t1For unit rail
Rail temperature before locking；L1The steel rail displacement left and right sight gauge reading at unit rail two ends before locking for unit rail；L2For unit rail
The steel rail displacement left and right sight gauge reading at unit rail two ends after locking.
The gapless track locking construction method of embedded continuous support ballastless track system the most according to claim 1, its
Being characterised by, in steph, the fixed area in i+1 the unit rail to one independent construction section carries out macromolecule and waters
During note, the fixed area that the frock lock room of i-th unit rail is incorporated to i+1 unit rail carries out Macromolecular pouring together.
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| CN201610716404.XA CN106320106B (en) | 2016-08-24 | 2016-08-24 | The gapless track locking construction method of embedded continuous support ballastless track system |
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| CN201610716404.XA CN106320106B (en) | 2016-08-24 | 2016-08-24 | The gapless track locking construction method of embedded continuous support ballastless track system |
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| CN112761034A (en) * | 2020-12-24 | 2021-05-07 | 成都市新筑路桥机械股份有限公司 | Fluid material pouring trolley |
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| CN106320106B (en) | 2018-03-13 |
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