CN106012697B - Ballastless track roadbed high polymer grouting lifting method - Google Patents
Ballastless track roadbed high polymer grouting lifting method Download PDFInfo
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- CN106012697B CN106012697B CN201610370638.3A CN201610370638A CN106012697B CN 106012697 B CN106012697 B CN 106012697B CN 201610370638 A CN201610370638 A CN 201610370638A CN 106012697 B CN106012697 B CN 106012697B
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- grouting
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- 229920000642 polymer Polymers 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000007569 slipcasting Methods 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 64
- 239000004575 stone Substances 0.000 claims abstract description 40
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 238000013459 approach Methods 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000010339 dilation Effects 0.000 claims description 2
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- 239000003292 glue Substances 0.000 claims description 2
- 239000002775 capsule Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 239000012634 fragment Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
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- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- 239000011440 grout Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 241001669679 Eleotris Species 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
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- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 210000002726 cyst fluid Anatomy 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 239000012535 impurity Substances 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
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- 230000002787 reinforcement Effects 0.000 description 1
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
Abstract
The present invention proposes that a kind of ballastless track roadbed high polymer grouting lifting method, the roadbed include at least graded broken stone layer, support plate and road bed board from bottom to up, and this approach includes the following steps：S1：Determine slip casting region and Uplifting amount；S2：Identify slip casting hole site, drilling is to certain depth in graded broken stone layer to form injected hole, wherein when being lifted to the non-curved section of roadbed, injected hole among roadbed vertically pierces to be formed from railway roadbed plate surface, and the injected hole of roadbed both sides to be formed from support plate towards oblique pierce in roadbed centre；S3：Grouting Pipe is inserted into injected hole, until the bottom of injected hole；S4：High polymer grouting material is injected into graded broken stone layer by the Grouting Pipe using high-pressure slip-casting equipment, to realize the lifting of roadbed.The present invention effectively solves the problems, such as to be based on ballastless track structure Track regularity caused by subgrade settlement.
Description
Technical field
The present invention relates to high-speed railway fields, more particularly to be a kind of ballastless track roadbed high polymer grouting lifting side
Method, suitable for II plate-type non-fragment orbits of CRTS, double-block type ballastless track structure, the structure of double-block type ballastless track containing end carriage and
The lifting of a variety of ballastless track structures such as switch area long sleeper buried-type ballastless track structure.
Background technology
Shanghai-Hangzhou visitor specially all uses II plate-type ballastless track structures of CRTS (plate-type ballastless track) in process of construction.
For Ballast track structure, the globality of II plate-type ballastless track structures of CRTS makes it in stability, road-ability
Etc. have the advantages that notable, still, the circuit that globality also limits II plate-type ballastless track structures of CRTS simultaneously is flat
It is pliable can repair ability.For II plate-type ballastless track structures of CRTS, adjustable extent can only be allowed in fastener system
The interior injustice to circuit is pliable to repair, when guideway irregularity is more than the adjustable range of fastener system, II templates of CRTS
The Track regularity of formula ballastless track structure will be faced with the problem of unrepairable, brings and seriously affects to circuit normal operation.
In consideration of it, Shanghai-Hangzhou visitor specially in process of construction, has carried out stringent control, to control circuit to the construction quality of ground, roadbed
Settlement amount after construction, ensure the ride comfort of ballastless track structure.However, due to the particularity of geological conditions, Shanghai-Hangzhou visitor specially puts into
After operation, uncontrollable settlement after construction and thus caused guideway irregularity problem becomes Shanghai-Hangzhou visitor specially fortune that ground, roadbed generate
The main problem faced in the process is sought, Local topography settling amount has had exceeded the adjustment amount of fastener permission, to Shanghai-Hangzhou visitor specially driving
Comfort, overall trip speed, operation security etc. bring adverse effect.In addition, non-fragment orbit circuit ground, road to having opened operation
The settlement after construction of base control effectively, and is controlled especially for the ground of soft soil zone, the settlement after construction of roadbed, is still
The problem in face of scientific worker at home and abroad is put, does not have effective solution method still, therefore, for lasting generation can not
For the circuit for controlling settlement after construction location, settling amount is a matter of time beyond the adjustable amount of fastener system.
Currently, the II plate-type ballastless track structures of CRTS brought beyond the adjustable amount of fastener system for settlement amount after construction
Guideway irregularity problem, the mode that China takes the adjustable amount of increase fastener system are handled, this to a certain extent can
Enough restore the ride comfort of track structure.But after increasing the adjustable amount of fastener system, the cushion block of fastener system need to use whole pad
Block safeguards the stability of track structure, since the settling amount of different location is different, the whole pad used in each fastener system
The thickness of block is different, in this way, different entirety cushion blocks are both needed to individually mold and make, it is with high costs, in addition, fastener system is adjustable
It is limited that amount, which increases amplitude, for the track structure persistently to sink with the extension of service time, this processing mode
With limitation.Slurry injection technique is taken to be lifted track structure, restoring circuit elevation and fastener system Uplifting amount becomes dimension
Protect the inevitable choice of non-fragment orbit normal operation.
Invention content
Technical problem to be solved by the invention is to provide a kind of ballastless track roadbed high polymer grouting lifting methods, effectively
It solves the problems, such as to be based on ballastless track structure Track regularity caused by subgrade settlement.
To solve the above problems, the present invention proposes a kind of ballastless track roadbed high polymer grouting lifting method, the roadbed
Graded broken stone layer, support plate and road bed board are included at least from bottom to up, and this approach includes the following steps：
S1：Determine slip casting region and Uplifting amount；
S2：Slip casting hole site is identified, drilling is to certain depth in graded broken stone layer to form injected hole, wherein to roadbed
Non- curved section when being lifted, the injected hole among roadbed vertically pierces to be formed from railway roadbed plate surface, the slip casting of roadbed both sides
Hole to be formed from support plate towards oblique pierce in roadbed centre；
S3：Grouting Pipe is inserted into injected hole, until the bottom of injected hole；
S4：High polymer grouting material is injected into graded broken stone layer by the Grouting Pipe using high-pressure slip-casting equipment,
To realize the lifting of roadbed.
According to one embodiment of present invention, in the step S4, the Uplifting amount of single slip casting is no more than 2cm, works as lift
When rising amount is more than, it is performed in multiple times lifting.
According to one embodiment of present invention, in the step S4, the Grouting Pipe is passed through using high-pressure slip-casting equipment
High polymer grouting material is injected into graded broken stone layer and is divided into filling compacted stage and lifting filling stage；
In the filling compacted stage, high polymer grouting material is after the outflow of slip casting nozzle, under grouting pressure effect,
It spreading and infiltrates into the internal voids of graded broken stone layer, filling level matches the internal voids of metalling and consolidation forms structure,
Become a compressible but impermeable entirety by the graded broken stone layer in range of scatter is compacted, near slip casting nozzle
Confined space is formed between graded broken stone layer and support plate；
In the lifting filling stage, high polymer grouting material is flowed out from slip casting nozzle, into the confined space shape
At cyst fluid, under the hydraulic drive effect effect of grouting pressure, lifting force is formed so that roadbed is lifted.
According to one embodiment of present invention, adjacent support rails platform is arranged on road bed board in the position of the injected hole among roadbed
The center of symmetrical central axes, the spacing of injected hole are the spacing of two neighboring track unit or are its positive integer times.
According to one embodiment of present invention, the injected hole in slip casting region is arranged in the form of quincuncial pile, each injected hole
Shape is in quincunx.
According to one embodiment of present invention, the dilation angle of high polymer grouting material is between 0.65m~1.62m.
According to one embodiment of present invention, when being lifted to the curved section of roadbed, the injected hole of roadbed downside compares road
Base high side injected hole is deeper into graded broken stone layer.
According to one embodiment of present invention, when the ranging from 5s~15s, surface drying of the rise time of high polymer grouting material
Between ranging from 10s~35s.
According to one embodiment of present invention, filling injected hole carries out slip casting by hole mode is jumped, and grouting sequence is to one group
The inclined hole of middle roadbed both sides is first filled, and is then filled to the injected hole among roadbed, then again to adjacent another
The inclined hole of the roadbed both sides of group is filled, and so on.
According to one embodiment of present invention, further include step S5 after the step S4, it is complete in the slip casting of slip casting region
Cheng Hou removes Grouting Pipe, and the rapid-hardening microdilatancy mortar using strength grade not less than C30 blocks injected hole.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art：
Description of the drawings
Fig. 1 is the flow diagram of the ballastless track roadbed high polymer grouting lifting method of the embodiment of the present invention；
Fig. 2 a, 2b are that the ballastless track roadbed of the embodiment of the present invention carries out the front and back structural representation of high polymer grouting lifting
Figure；
Structural representation when Fig. 3 is the curved section progress high polymer grouting lifting of the ballastless track roadbed of the embodiment of the present invention
Figure.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
Many details are elaborated in the following description in order to fully understand the present invention.But the present invention can be with
Much implement different from other manner described here, those skilled in the art can be without prejudice to intension of the present invention the case where
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
Ballastless track roadbed high polymer grouting lifting method is suitable for II plate-type non-fragment orbits of CRTS, double block type ballastless
A variety of non-fragment orbits such as track structure, the structure of double-block type ballastless track containing end carriage and switch area long sleeper buried-type ballastless track structure
The lifting of structure.For switch area ballastless track structure, slip-casting lifting technique further includes that confining bed cuts and cuts, to realize
It is identical as other aforementioned track structure forms.
In a broad sense, it when one (or more) kinds of liquid or many kinds of solids mixture, can be formed under certain condition (new)
Solid, this substance are known as injecting paste material.The injecting paste material for being presently used for maintenance of works mainly has cement mortar, clay cement
Slurry, cement-waterglass slurries, waterglass, high polymer grouting material etc..
The present invention is using high polymer grouting material.High polymer grouting technical principle is according to a certain ratio, to ground
Multigroup part of high polymer material of middle injection rapid spatial expansion and forms foaming solid after material reacts, and reaches reinforcing ground
The purpose that base, filling are come to nothing.The major advantage of high polymer grouting technology includes：The solid material density formed after polymer reaction
It is low, 1/10th of density of material less than materials such as cement of good mixing；The elative free swelling ratio of high polymer material can reach 20:
1, the crack in roadbed can be filled, while surrounding medium can be squeezed, reach compact medium effect；High polymer material solidification speed
Degree is fast, can reach the 90% of its final solidification intensity in 15 minutes after the reaction.Material has good elasticity, and with higher
Tensile strength；Using mobile operational process mode, work progress is quick, need not the health as cement grouting, can greatly contract
The short construction time；Slip casting pore size is small, about 16mm, to structure substantially without damage；Material has good water resistance after solidification,
Environmentally safe, materials ' durability was up to 20 years or more.High polymer grouting material is preferably that bi-component non-aqueous reaction class hard is poly-
Urethane foamed material.
Referring to Fig. 1, the ballastless track roadbed high polymer grouting lifting method of the present embodiment includes the following steps：
S1：Determine slip casting region and Uplifting amount；
S2：Slip casting hole site is identified, drilling is to certain depth in graded broken stone layer to form injected hole, wherein to roadbed
Non- curved section when being lifted, the injected hole among roadbed vertically pierces to be formed from railway roadbed plate surface, the slip casting of roadbed both sides
Hole to be formed from support plate towards oblique pierce in roadbed centre；
S3：Grouting Pipe is inserted into injected hole, until the bottom of injected hole；
S4：High polymer grouting material is injected into graded broken stone layer by the Grouting Pipe using high-pressure slip-casting equipment,
To realize the lifting of roadbed.
Below in conjunction with the accompanying drawings, detailed retouch is carried out to the concrete mode of ballastless track roadbed high polymer grouting lifting method
It states.
In step S1, before mortar depositing construction, accurate measurement net is established on whole circuit ballastless track roadbed, using electronic leveler
Instrument and total powerstation are acquired track plan and altitude data, determine each track in slip casting region and slip casting region just
Beginning elevation and orbit plane position, so that it is determined that the Uplifting amount of corresponding position.
Referring to Fig. 2 a, ballastless track roadbed includes at least graded broken stone layer 1, support plate successively from bottom to up before slip casting
2 and road bed board 3.It is ground below graded broken stone layer 1.Can also have other layers on road bed board 3.In step S2, in determination
On the basis of slip casting section, injected hole layout design, mark slip casting hole site are carried out.Using electric hammer drill according to the injected hole of mark
It drills.To the non-curved section (straight line path of roadbed (present invention meaning roadbed refers to the track bed for including track structure)
Section) when being lifted, the injected hole (centre bore) among roadbed vertically pierces to be formed from 3 surface of road bed board, the note of roadbed both sides
Slurry hole (inclined hole) to be formed from support plate 2 towards oblique pierce in roadbed centre.
Referring to Fig. 3, in one embodiment, when being lifted to the curved section of track bed, the injected hole of roadbed downside
Than roadbed high side injected hole deeper into graded broken stone layer 1.When carrying out slip casting to curved section using the deep hole, deviation grouting process,
Gravity can be overcome, effectively solves the problems, such as the midline shift after curved section track structure is lifted, extreme enrichment slip-casting lifting
The application range of technology.
When injected hole layout design, preferably row's injected hole is respectively set up in the heart and circuit both sides in the line, and should fully consider
The reinforcement location of the track structures such as track plates, base board, in order to avoid reinforcing bar is damaged when drilling, in the precracking of track plates, track, button
The facilities such as part, track, transponder, track circuit occupy and do not lay injected hole as possible, and should reduce to the greatest extent in track plates
Etc. drilling hole amount on the track structure for having deformed bar.
It when drilling, is first drilled with compared with stub drill, then is drilled with compared with long drill bit, go deep into graded broken stone until being drilled into
1 certain depth of layer.It after the completion of drilling, should clear up in time, collect the dust drilled out, prevent pollution site environment, and glass should be used
Glass glue or stopper carry out temporary enclosed to injected hole, prevent rainwater and impurity from entering.
With continued reference to Fig. 2 a, in step s3, before slip casting, Grouting Pipe 100 is inserted into injected hole, until injected hole
Bottom, to which 100 nozzle of Grouting Pipe arrives in graded broken stone layer at certain depth, wherein for straightway injected hole,
Grouting Pipe 100 generally gos deep into graded broken stone 3cm~7cm or so, and for curved section downside injected hole, Grouting Pipe 100 is general
Go deep into graded broken stone 20cm or more.
When needing mortar depositing construction, first the glass cement for closing injected hole or stopper are cleaned out, Grouting Pipe 100 is inserted into and is noted
It starches in hole, the outer tube of Grouting Pipe 100 is clamped with locking pliers, the nut on 100 top of Grouting Pipe is then twisted with spanner, outer tube is made to squeeze
Rubber tube make rubber tube generate expansion, to block the gap between Grouting Pipe 100 and injected hole, prevent slurries along Grouting Pipe outside
It is emitted on wall.The Grouting Pipe 100 of inclined hole can immediately be installed after drilling, and the Grouting Pipe 100 of centre bore need to be in mortar depositing construction
The same day installed, in order to avoid influence traffic safety.
In step s 4, when carrying out slip-casting lifting to track structure, using high-pressure slip-casting equipment by high polymer grouting material
Material is injected by the Grouting Pipe 100 for being deep into certain depth in graded broken stone layer 1 of pre-plugged, in grouting pressure and injection slurry
Under the expansion of body, the lifting to track bed is realized.Referring to Fig. 2 b gap is filled after the injection of high polymer grouting material
Graded broken stone layer 1 ' is formed, and forms high polymer grouting material layer 4 between graded broken stone layer 1 ' and support plate 2.High polymer is noted
Pulp material is a kind of two-component chemical slip casting material, occur rapidly after mixing, between the A that is in a liquid state under room temperature, B two-component blistering,
Gel chemistries react, and form solid foams and release a large amount of heat, therefore, rail are being carried out using high polymer grouting material
When road structure lifting, the high polymer grouting material of injection can occur to be changed into from the smaller liquid of viscosity in a relatively short period of time viscous
Larger plasticity viscoelastic body is spent, then is changed into the solid with certain mechanical strength.
High polymer grouting lifting technique be successfully realized in Window time to II plate-type non-fragment orbits of CRTS, double-block type without
The accurate lift of tiny fragments of stone, coal, etc. track structure, the structure of double-block type ballastless track containing end carriage and switch area long sleeper buried-type ballastless track structure etc.
It rises, during lifting, upper and lower line alignment control is good, is satisfied by same day train and opens condition.The high polymer grouting is lifted work
The lifting that skill is suitable for above-mentioned a variety of ballastless track structures is constructed, and the lifting construction of sedimentation non-fragment orbit is can be widely applied to.
After the completion of each slip casting point slip casting, unclamps fastening nut in Grouting Pipe 100 rapidly using speeder wrench, make Grouting Pipe
100 rubber tube freely stretches, and then clamps Grouting Pipe with two locking pliers and firmly extracts.Grouting Pipe should be noted in each slip casting position
It is extracted as early as possible after the completion of slurry, the solidification of overlong time injecting paste material is avoided to cause Grouting Pipe 100 is bad to pull out the anchoring of Grouting Pipe 100
Go out.It cannot extract, can extract Grouting Pipe 100 by special pipe extractor in time if any individual Grouting Pipes 100.
In one embodiment, further include step S5 after step s4, in slip casting region after the completion of slip casting, remove slip casting
Pipe 100, and the rapid-hardening microdilatancy mortar using strength grade not less than C30 blocks injected hole.It is lifted paragraph circuit
After repetition measurement is met the requirements, injected hole should be blocked.On road bed board 3 when the closure of injected hole, a small amount of ungauged regions of Ying Xianyong
Mortar is filled injected hole, is then blocked using anchoring adhesive, and anchoring adhesive sealed depth is not preferably less than 15cm.
During progress ballastless track structure is each lifted the lifting of unit, single rising height is bigger, construction efficiency
It is higher, but be not that the single rising height the big better.Due in slip-casting lifting work progress, track plates (or road bed board
3) it, will produce stress inside base board (or support plate 2), the size of stress is related with primary maximum Uplifting amount, to avoid lifting
Damage is generated to structures such as track plates, seat concretes during rising, needs to carry out carrying out inspection calculation to primary maximum Uplifting amount, prevent
Only track plates quilt or support plate are by drawing crack.For this purpose, in step s 4, single slip-casting lifting amount is preferably 5~10mm, single slip casting
Uplifting amount is performed in multiple times lifting no more than 2cm when Uplifting amount is more than.
To ensure that high polymer grouting material is ground in the full property of 2 bottom of support plate for the property of high polymer grouting material
Study carefully rheological behaviour and uplifting mechanism of the high polymer grouting material during lifting, forms the shape of structure according to injecting paste material
Looks and grouting process is executed with the change of the bonding state of graded broken stone.
Preferably, in step s 4, high polymer grouting material is injected into grade by Grouting Pipe using high-pressure slip-casting equipment
Compacted stage and lifting filling stage are filled in metalling 1, being further divided into.It fills the compacted stage and the lifting filling stage is equal
It may include multiple slip casting cycle.Multiple slip casting cycle, which ensures to realize, fills compacted stage and lifting filling stage, high polymer grouting
The change that material occurs with graded broken stone layer 1, to slowly be lifted track bed.
In filling the compacted stage, high polymer grouting material is after the outflow of slip casting nozzle, under grouting pressure effect, diffusion
And infiltrate into a kind of internal voids (graded broken stone is bulk solid structure, and internal there are larger gaps) of graded broken stone layer 1,
Internal voids of the filling level with metalling 1 and consolidation forms structure 1, become the graded broken stone layer 1 ' in range of scatter is compacted
One compressible but impermeable entirety, it is close to be formed between the graded broken stone layer 1 ' near slip casting nozzle and support plate 2
Close space.It fills the compacted stage, grouting pressure is cut down rapidly in outlet spout, and enough lifting force pair can not be formed between injection slurry
Upper track structure is lifted.The slurry of injection rapidly a certain range of grade near grout outlet under grouting pressure effect
With being spread in rubble gap, rapidly solidified formation structure simultaneously generates expansion, the graded broken stone of range of scatter is compacted and formed
One compressible but impermeable entirety together forms a confined air in grout outlet a certain range and upper track structure
Between.
In being lifted the filling stage, high polymer grouting material is flowed out from slip casting nozzle, and cyst fluid 4 is formed into confined space,
Under the hydraulic drive effect effect of grouting pressure, lifting force is formed so that roadbed is lifted.For each slip casting cycle,
Inject slurry grouting pressure effect under, quickly extended to the outside centered on grout outlet, filling track structure lifting after with grading
The gap formed between metalling 1, and rapidly be thickened, expand, solidification, next slip casting be recycled to come before, grout outlet again
Form new confined space.Repeatedly, track structure is able to be continuously obtained lifting in the slip casting stage that each slip casting recycles.And
In the stop phase of each slip casting cycle, injection slurry generates volume expansion during forming structure, in upper track
Under the constraint of structure, certain expansive force is formed, track structure is enable to be lifted.
Injected hole avoid the reinforcing bar on road bed board 3 when arranging, in order to avoid damage influence is brought to track structure.According to
The design feature of II plate-type non-fragment orbits of CRTS, symmetrical track central axes center and road bed board on road bed board 3
3 precracking positions, steel bar arrangement is less, and hurt reinforcing bar can be avoided as far as possible in drilling.And 3 two neighboring support rail of road bed board
The spacing of platform unit is 0.65m, and therefore, the position of the injected hole among roadbed is preferably provided at adjacent support rails platform on road bed board 3
The center of symmetrical central axes, the spacing of injected hole are the spacing of two neighboring track unit or are two neighboring support rail
The positive integer times of the spacing of platform unit.
According to the approximate circle expanded configuration of slurries, injected hole line-spacing preferably should carry out arrangement by quincuncial pile form and set, respectively
The shape of injected hole is preferably in quincunx, to obtain using minimum injecting paste material in the best of fragment-free track slab lower support layer
Filling effect.
The track plates width of II plate-type non-fragment orbits of CRTS is 2.55m, and concrete bed or support plate width are 3.25m.
Extension of the injecting paste material in concrete bed or supporting course lower part is substantially rounded.Therefore, the minimal expansion radius of injecting paste material
It should be the integral multiple of 0.37m or 0.37m.The extension radius of injecting paste material is smaller, and the workload carried out needed for scene is also bigger,
Constructing, the time also consumed is longer, and construction efficiency will also have a greatly reduced quality；Conversely, injecting paste material extension radius is bigger, construction effect
Rate is higher.But be not injecting paste material extension radius it is more big good, when the extension radius of injecting paste material is more than supporting course
When one half width, injecting paste material is easy for leaking out from the supporting course of ballastless track structure lower part, can cause between line or outside line
The arch camber of track structure.Therefore, the extension radius of injecting paste material should be less than 1.62m.Therefore, the diffusion of high polymer grouting material half
Diameter is preferably between 0.65m~1.62m.
Preferably, the ranging from 10s of the ranging from 5s~15s, surface drying time of the rise time of high polymer grouting material~
35s.The working performance of high polymer grouting material is generally characterized with rise time, wire drawing time and surface drying time.Wherein, it rises
Time, which refers to, occurs that foamable reaction generates volume expansion and viscosity starts the increased time between high polymer grouting material bi-component；Wire drawing
Time refer to material generate gelling, surface can wire drawing time；Surface drying time refers to that mixed serum generates maximum volume expansion, is become
The time that solid loses flowability completely and surface is tack-free.Between rise time and surface drying time reflection injecting paste material bi-component
Chemical reaction rate, the two is directly related with the working performance of high polymer grouting material, rise time and the too fast meeting of surface drying time
Cause filling radius smaller, influences filling effect；Rise time and surface drying time can cause injecting paste material that can trickle everywhere slowly excessively,
The problem of being overflowed from base board bottom, therefore, suitable rise time and surface drying time are high polymer grouting material works fines
The important embodiment of energy.
When slip casting, slip-casting lifting is carried out from intermediate injected hole first, it is symmetrical to carry out other notes then centered on it
The slip casting for starching hole, then carries out secondary injected hole slip casting, to realize the lifting of track structure；When track structure reaches target elevation
Afterwards, to realize the turgor of high polymer grouting material, the filling of injected hole should be carried out, filling injected hole is carried out by hole mode is jumped
Slip casting, grouting sequence are first to be filled to the inclined hole of roadbed both sides in one group, are then filled out to the injected hole among roadbed
It fills, then the inclined hole of another group adjacent of roadbed both sides is filled again, and so on.Each injected hole slip casting process
In, the different measuring points Uplifting amount of track plates center line before and after slip casting and left and right sides track is monitored using electronic level,
After this track structure elevation reaches requirement, stop slip casting.
With following technical characterstic：
(1) it is suitable for carrying out lifting reparation to sedimentation non-fragment orbit in Window time, it can timely open to traffic.
(2) track structure stress is not influenced, and very little is damaged to ballastless track structure.
(3) lifting control accuracy be -3mm~1mm, slip-casting lifting construction period Rail inspection be no more than II grade and with
The upper deviation.
(4) injecting paste material working performance is superior, mechanical property is suitable, endurance quality is good；Grouting equipment small volume and less weight, height
Effect is quick；Grouting process is simple and practical, operability is strong.
(5) be suitable for the decanting zones such as I, II, III plate-types of CRTS and double-block type ballastless track structure (containing end carriage), track switch without
The whole lifting of tiny fragments of stone, coal, etc. track is repaired.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting claim, any this field
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore the present invention
Protection domain should be subject to the range that the claims in the present invention are defined.
Claims (8)
1. a kind of ballastless track roadbed high polymer grouting lifting method, the roadbed include at least from bottom to up graded broken stone layer,
Support plate and road bed board, which is characterized in that this approach includes the following steps：
S1：Determine slip casting region and Uplifting amount；
S2：Slip casting hole site is identified, drilling is to certain depth in graded broken stone layer to form injected hole, wherein to the non-of roadbed
When curved section is lifted, the injected hole among roadbed vertically pierces to be formed from railway roadbed plate surface, the injected holes of roadbed both sides from
Support plate to be formed towards oblique pierce among roadbed；It when drilling, is first drilled with compared with stub drill, then is bored with compared with long drill bit
Graded broken stone layer certain depth is goed deep into hole until being drilled into；After the completion of drilling, the dust that drills out is collected in cleaning, using glass cement or
Stopper carries out temporary enclosed to injected hole；
S3：Grouting Pipe is inserted into injected hole, until the bottom of injected hole；When mortar depositing construction, the glass of injected hole will be first closed
Glass glue or stopper are cleaned out, and Grouting Pipe is inserted into injected hole, the outer tube of Grouting Pipe is clamped with locking pliers, are then twisted with spanner
The nut on Grouting Pipe top, so that outer tube is squeezed rubber tube makes rubber tube generate expansion, to block between Grouting Pipe and injected hole
Gap prevents slurries from being emitted in slip casting pipe outer wall；
S4：High polymer grouting material is injected into graded broken stone layer by the Grouting Pipe using high-pressure slip-casting equipment, with reality
The lifting of existing roadbed；
The injected hole in slip casting region is arranged in the form of quincuncial pile, and the shape of each injected hole is in quincunx；High polymer grouting material
Dilation angle between 0.65m~1.62m.
2. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that in the step S4
In, the Uplifting amount of single slip casting is performed in multiple times lifting no more than 2cm when Uplifting amount is more than.
3. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that in the step S4
In, high polymer grouting material is injected into graded broken stone layer to be divided into filling by the Grouting Pipe using high-pressure slip-casting equipment and is squeezed
Close stage and lifting filling stage；
In the filling compacted stage, high polymer grouting material is after the outflow of slip casting nozzle, under grouting pressure effect, diffusion
And infiltrate into the internal voids of graded broken stone layer, filling level matches the internal voids of metalling and consolidation forms structure, will expand
Dissipate that the graded broken stone layer in range is compacted to become a compressible but impermeable entirety, to grading near slip casting nozzle
Confined space is formed between metalling and support plate；
In the lifting filling stage, high polymer grouting material is flowed out from slip casting nozzle, and capsule is formed into the confined space
Liquid forms lifting force so that roadbed is lifted under the hydraulic drive effect effect of grouting pressure.
4. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that the note among roadbed
The center of the symmetrical central axes of adjacent support rails platform is arranged on road bed board in the position in slurry hole, and the spacing of injected hole is adjacent two
The spacing of a track unit is its positive integer times.
5. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that the curve of roadbed
When Duan Jinhang is lifted, the injected hole of roadbed downside is than roadbed high side injected hole deeper into graded broken stone layer.
6. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that high polymer grouting material
Ranging from 5s~15s of the rise time of material, ranging from 10s~35s of surface drying time.
7. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that filling injected hole is pressed
Jump hole mode and carry out slip casting, grouting sequence is first to be filled to the inclined hole of roadbed both sides in one group, then to roadbed among
Injected hole is filled, and is then filled again to the inclined hole of another group adjacent of roadbed both sides, and so on.
8. ballastless track roadbed high polymer grouting lifting method as described in claim 1, which is characterized in that in the step S4
Further include step S5 later, in slip casting region after the completion of slip casting, removes Grouting Pipe, and be not less than the speed of C30 using strength grade
Solidifying type microdilatancy mortar blocks injected hole.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702834A (en) * | 2016-12-28 | 2017-05-24 | 中国铁道科学研究院铁道建筑研究所 | Midline deviation rectifying method for sedimentary offset ballastless track |
| CN106702835B (en) * | 2016-12-29 | 2018-07-03 | 中铁四院集团岩土工程有限责任公司 | A kind of restorative procedure for being used to settle non-fragment orbit |
| CN107059496B (en) * | 2017-01-09 | 2019-10-01 | 北京瑞威铁科高铁工程有限公司 | A kind of track road-bridge transition section slip casting correction lifting method |
| CN106758591B (en) * | 2017-01-09 | 2019-07-26 | 北京瑞威铁科高铁工程有限公司 | A kind of non-fragment orbit slip-casting lifting and lifting method for correcting error |
| CN107165035A (en) * | 2017-06-30 | 2017-09-15 | 郑州陆得新基础工程有限公司 | Airfield pavement plat-bottom escape Treatment Methods |
| CN109778619A (en) * | 2019-01-25 | 2019-05-21 | 北京瑞威世纪铁道工程有限公司 | Empty construction method is hung between processing concrete bottom seat board and bedding graded broken stone surface layer |
| CN111749198B (en) * | 2020-05-30 | 2022-11-25 | 郑州安源工程技术有限公司 | Channel slab underwater grouting stabilizing and lifting method |
| CN113802424B (en) * | 2021-09-22 | 2022-04-01 | 西南交通大学 | Sedimentation bag type grouting lifting repair method for ballastless track of high-speed railway |
| CN114541191A (en) * | 2022-03-22 | 2022-05-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for accurately lifting ballastless single turnout during high-speed rail settlement |
| CN114575204A (en) * | 2022-03-22 | 2022-06-03 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Accurate lifting method for turnout of ballastless crossover line for settlement of operating high-speed rail |
| CN114808576B (en) * | 2022-05-06 | 2023-10-03 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Lifting method for ballastless track structure of end beam under operation high-speed rail |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131498A (en) * | 2014-08-12 | 2014-11-05 | 中国铁道科学研究院铁道建筑研究所 | Lifting repair method for ballastless track with settled curved section |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074828B (en) * | 2013-01-24 | 2014-11-05 | 北京安通伟业铁路工务技术有限公司 | System and method for lifting sunken railway ballastless track bed by utilizing injection method |
| CN203034319U (en) * | 2013-01-24 | 2013-07-03 | 北京安通伟业铁路工务技术有限公司 | System for lifting railway ballastless track by applying injection method in the case of track bed subsidence |
| US9045865B2 (en) * | 2013-04-19 | 2015-06-02 | SAFEKEY Engineering Technology(Zhengzhou), Ltd. | Polymer grouting method for uplifting ballastless track of high-speed rail |
| CN103410063B (en) * | 2013-08-29 | 2015-09-16 | 中国铁道科学研究院铁道建筑研究所 | A kind of slip-casting lifting fast repairing method for sedimentation non-fragment orbit |
| CN104131499B (en) * | 2014-08-12 | 2016-02-24 | 中国铁道科学研究院铁道建筑研究所 | A kind of for sedimentation non-fragment orbit midline shift method for correcting error |
| CN104153259A (en) * | 2014-08-20 | 2014-11-19 | 中国铁道科学研究院铁道建筑研究所 | Rapid repairing method for sunken ballastless track through grouting lifting |
| CN104452484A (en) * | 2014-11-10 | 2015-03-25 | 中国铁道科学研究院铁道建筑研究所 | Repair method for ballastless track foundation settlement |
| CN104404844A (en) * | 2014-11-18 | 2015-03-11 | 中国铁道科学研究院铁道建筑研究所 | Method for repairing and reinforcing open joint of filling layer of slab ballastless track |
| CN105484110B (en) * | 2015-11-24 | 2020-06-19 | 北京瑞威铁科高铁工程有限公司 | Method for treating slurry leakage of gap between base plate of CRTSI type plate ballastless track of high-speed railway and surface layer of roadbed |
-
2016
- 2016-05-30 CN CN201610370638.3A patent/CN106012697B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131498A (en) * | 2014-08-12 | 2014-11-05 | 中国铁道科学研究院铁道建筑研究所 | Lifting repair method for ballastless track with settled curved section |
Non-Patent Citations (3)
| Title |
|---|
| 遂渝铁路无砟轨道病害原因分析及治理措施;王士杰;《路基工程》;20151220(第183期);第219-220页"4.1 无砟轨道结构注浆方法"部分，图8 * |
| 高聚物注浆抬升技术在无砟轨道沉降整治中的应用;马斌;《上海铁道科技》;20150625(第2期);第59页"3 高聚物注浆抬升施工技术"部分 * |
| 高速铁路无砟轨道整体抬升技术探析;张国全;《山西建筑》;20160220;第42卷(第6期);第140页第2栏 * |
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