CN107130475A - Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method - Google Patents
Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method Download PDFInfo
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- CN107130475A CN107130475A CN201710502316.4A CN201710502316A CN107130475A CN 107130475 A CN107130475 A CN 107130475A CN 201710502316 A CN201710502316 A CN 201710502316A CN 107130475 A CN107130475 A CN 107130475A
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- rotary churning
- churning pile
- aqueduct
- fragment orbit
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- 239000011347 resin Substances 0.000 claims abstract description 17
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- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000011049 filling Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 238000007569 slipcasting Methods 0.000 claims description 28
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
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- 240000004160 Capsicum annuum Species 0.000 description 1
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- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011400 blast furnace cement Substances 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
-
- 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
- E01B37/00—Making, maintaining, renewing, or taking-up the ballastway or the track, not provided for in a single one of groups E01B27/00 - E01B35/00
Abstract
The invention discloses ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method.Its process is：Rotary churning pile of being constructed respectively in the embankment both sides of non-fragment orbit and aqueduct intersection forms cement wall curtain, then carries out injecting treatment formation second on the outside of the rotary churning pile below non-fragment orbit embankment and between adjacent rotary churning pile respectively successively and reinforces section and the first reinforcing section；The track plates of last lifting non-fragment orbit, track plates surrounding is sealed, and fills prefabricated resin mortar block between track plates and screed, and by reserved injected hole to liquid resin is injected under track plates, until filling under track plates untill all spaces.The present invention can effectively improve foundation bearing capacity and improve the compactness of roadbed bottom ground, reduce sedimentation and deformation caused by new construction of structures undercrossing tunnel, and railroad track is repaired, it is ensured that railway operation safety and running stability, construction machinery is simply, conveniently.
Description
Technical field
The invention belongs to Geotechnical Engineering field, and in particular to ballastless track roadbed deformation control is worn under a kind of aqueduct
System is with repairing structure and method.
Background technology
With the fast development of railway construction in China, the railway network has basically formed scale.Due to urban development, subway, city
The engineering projects such as city's underground pipe gallery, the training of channel are speeded up the construction, and certainly will be produced and be intersected with rail track, or undercrossing tunnel, or on
Across railway.During for wearing railway in operation under new construction of structures, more to be worn under the pattern of tunnel or culvert pipe, inevitably cause fortune
Consolidation settlement caused by the loss of the certain soil body in battalion's railway lower section and WATER LEVEL CHANGES, so as to cause railway in operation to settle and rail
Road is deformed.There is clear and definite regulation in China to railroad bed settlement requirement, and settlement request is stricter, particularly《High-speed railway
Design specification》(TB10621-2014) provided in：Ballastless track of high-speed railway post-construction settlement of subgrade is no more than 15mm, changeover portion work
After settle and not should be greater than 5mm.In consideration of it, when wearing railway in operation under new construction of structures, it is necessary to take effective subgrade deformation to control
Measure, it is ensured that railroad bed settlement meets code requirement.Meanwhile, subgrade settlement causes track deformation, influences track structure stress,
The larger loss of track structure, and influence train security and traveling comfort are likely to result in when serious.At present, for subway
Rail track and the deformation rule of earth's surface during existing railway are worn under shield tunnel, domestic and foreign scholars have carried out more research,
When being soft foundation for railway bottom, more using pile foundation joist or the treatment measures of slip casting, rock around subway tunnel is reinforced
The soil body.In addition, also comparing many for the research in terms of simple non-fragment orbit reparation, such as by adjusting non-fragment orbit fastener system
Design altitude is reached to recover track vertical section, or by placing mortar bag after jacking track plate, then will hard mortar injection soon
Restorative procedure in mortar bag.Either using pile foundation joist or the processing of slip casting, or by adjusting non-fragment orbit fastener system
System, structure is more complicated, constructional difficulties, and cost is high, but also can produce influence to railway in operation.
The content of the invention
The purpose of the present invention be exactly in order to solve that above-mentioned background technology is present it is not enough there is provided one kind construction it is simple and convenient,
Cost is low, do not influence to wear ballastless track roadbed Deformation control under the aqueduct of traffic safety with repairing structure and method.
The technical solution adopted by the present invention is：Ballastless track roadbed Deformation control is worn under a kind of aqueduct to tie with repairing
Structure, it is characterised in that：Rotary churning pile including being arranged at non-fragment orbit embankment both sides, the rotary churning pile is longitudinal along non-fragment orbit circuit
Arrangement, spaced apart between rotary churning pile and non-fragment orbit embankment, the rotary churning pile bottom extends to aqueduct lower boundary
Hereinafter, rotary churning pile extends to aqueduct both sides along circuit longitudinal length；First is set to reinforce section, churning between adjacent rotary churning pile
Stake outside sets second to reinforce section, and the first reinforcing section and the second reinforcing Duan Jun are arranged in below non-fragment orbit embankment, described
The longitudinal length of first reinforcing section and the second reinforcing section along circuit is identical with churning pile length, and first, which reinforces section and second, reinforces section
Bottom is extended to below aqueduct lower boundary；Prefabricated resin mortar is filled between the track plates and screed of non-fragment orbit
Block.
Further, the rotary churning pile includes two campshed bodies, and two campshed bodies are longitudinally arranged along non-fragment orbit circuit, pile body it
Between be mutually twisted, pile body stake footpath be 0.5-0.7m；The distance between the rotary churning pile and non-fragment orbit embankment are 4-6m；The rotation
It is 2-5m to spray the distance between stake bottom and aqueduct lower boundary；End and aqueduct of the rotary churning pile along circuit longitudinal direction
The distance between external boundary is 8-12m.
Further, the first reinforcing section and the second reinforcing section are grouting and reinforcing body, and first, which reinforces section and second, adds
Gu the distance between at the top of section and aqueduct coboundary is 4-6m, the first reinforcing section and the second reinforcing section bottom level are high
In rotary churning pile bottom level.
Further, in addition to for monitoring the sedimentation and deformation of track and roadbed and the observation stake of horizontal displacement, being used for
The deviational survey hole of roadbed deeply mixing cement-soil pile and the peephole for monitoring SEA LEVEL VARIATION in ground are monitored, the observation stake is arranged at
On the outside of non-fragment orbit curb, non-fragment orbit embankment toe and rotary churning pile；The deviational survey hole is arranged at non-fragment orbit embankment and rotation
Spray between stake, deviational survey hole bottom level is less than rotary churning pile bottom level；The peephole is arranged at rotary churning pile both sides, peephole bottom
Portion extends to aqueduct coboundary.
Ballastless track roadbed Deformation control and restorative procedure are worn under a kind of aqueduct, its process is：Non-fragment orbit with
The embankment both sides of aqueduct intersection construct respectively rotary churning pile formation cement wall curtain, then successively under non-fragment orbit embankment
Injecting treatment formation second is carried out on the outside of the rotary churning pile of side and between adjacent rotary churning pile respectively and reinforces section and the first reinforcing section；Most
The track plates of lifting non-fragment orbit, track plates surrounding is sealed afterwards, and prefabricated resin mortar is filled between track plates and screed
Block, and by reserved injected hole to liquid resin is injected under track plates, until filling under track plates untill all spaces.
Further, the rotary churning pile is longitudinally arranged along non-fragment orbit circuit, between rotary churning pile and non-fragment orbit embankment between
At a certain distance, the rotary churning pile bottom is extended to below aqueduct lower boundary, and rotary churning pile is extended to along circuit longitudinal length
Aqueduct both sides；The longitudinal length of the first reinforcing section and the second reinforcing section along circuit is identical with churning pile length, and first
Reinforce section and the second reinforcing section bottom is extended to below aqueduct lower boundary.
Further, the rotary churning pile includes two campshed bodies, and two campshed bodies are longitudinally arranged along non-fragment orbit circuit, pile body it
Between be mutually twisted, pile body stake footpath be 0.5-0.7m；The distance between the rotary churning pile and non-fragment orbit embankment are 4-6m, the rotation
It is 2-5m, end and aqueduct of the rotary churning pile along circuit longitudinal direction to spray the distance between stake bottom and aqueduct lower boundary
The distance between external boundary is 8-12m.
Further, described first section is reinforced using split the law slip casting, the first injected hole for reinforcing section includes inclined hole and straight
Hole, 1.5m, 3m, 4.5m are arranged the slip casting point of inclined hole outside non-fragment orbit embankment toe respectively, the folder between inclined hole and vertical line
Angle is 20 ° -70 °, along the longitudinally spaced arrangement in railway direction；The slip casting point of straight hole respectively apart from non-fragment orbit embankment toe 0m,
1.5m, 3m arrange that straight hole is perpendicular to ground, along the longitudinally spaced arrangement in railway direction.
Further, described second section is reinforced using densification method slip casting, the second injected hole for reinforcing section is straight hole, from churning
Stake external boundary arranges multiple rows of injected hole with 1.5m spacing, and injected hole is along the longitudinally spaced arrangement in railway direction.
Further, before the track plates of lifting non-fragment orbit, the sedimentation for monitoring track and roadbed is first arranged
Deformation becomes with the observation stake of horizontal displacement, the deviational survey hole for monitoring roadbed deeply mixing cement-soil pile and for monitoring water level in ground
The peephole of change, the observation stake is arranged on the outside of non-fragment orbit curb, non-fragment orbit embankment toe and rotary churning pile, described to survey
Inclined hole is arranged between non-fragment orbit embankment and rotary churning pile, and the peephole is arranged at rotary churning pile both sides.
The present invention uses high-pressure rotary jet grouting pile combination mini-valve tube technique grouting and reinforcing measure, and high-speed railway soft foundation is entered
Row is reinforced, sedimentation and deformation caused by control aqueduct undercrossing tunnel.It is both, according to Monitoring Result, dynamically to instruct rotary churning pile and note
Slurry work progress and the validity for verifying foundation stabilization measure.In addition, for ballastless track because the uneven of ground is sunk
The deformation produced is dropped, non-fragment orbit is repaired using lifting track plates filling prefabricated resin mortar block recovery technique, it is ensured that
Track and subgrade settlement meet code requirement.Whole work progress of the invention can be completed in skylight point, not influence driving to pacify
Entirely, after the completion of aqueduct construction, the travel safety and orbital forcing of ballastless track roadbed are protected.This patent has
The characteristics of having economic, safe, simple and practical.
The present invention can effectively improve foundation bearing capacity and improve the compactness of roadbed bottom ground, reduce newly-built construct
Sedimentation and deformation caused by thing undercrossing tunnel, and railroad track is repaired, it is ensured that railway operation safety and running stability.
Whole work progress can be completed in skylight point, not influence traffic safety.With safe, economic, practical, construct simple and convenient
The characteristics of, beneficial to popularization, it can be widely applied in terms of aqueduct boring across underneath high-speed railway is reinforced with reparation and high-speed railway disease
In terms of regulation.
Brief description of the drawings
Fig. 1 is floor map of the invention.
Fig. 2 is schematic cross-sectional view of the invention.
Fig. 3 is the arrangement schematic diagram of monitoring device of the present invention.
Fig. 4 is the reparation schematic diagram of track plates of the present invention.
Fig. 5 is the schematic diagram of rotary churning pile of the present invention.
In figure：1- rotary churning piles；1.1 end；1.2 bottom；1.3 pile body；2- first reinforces section；3- second reinforces section；4- is oblique
Hole；5- straight holes；6- non-fragment orbit embankments；6.1 curb；6.2 toe；6.3 leg wire of slope；6.4 shoulder line；6.5 railway axis；7- is defeated
Waterpipe；7.1 coboundary；7.2 lower boundary；7.3 external boundary；8- observes stake；9- deviational surveys hole；10- peepholes；11- track plates；
12- screeds；13- bedplates；14- prefabricated resin mortar blocks.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to that this hair is well understood
It is bright, but they do not constitute restriction to the present invention.
As Figure 1-5, the present invention includes being arranged at the rotary churning pile 1 of the both sides of non-fragment orbit embankment 6, the edge of rotary churning pile 1
Non-fragment orbit circuit is longitudinally arranged, spaced apart between rotary churning pile 1 and non-fragment orbit embankment 6, and the bottom of rotary churning pile 1 is prolonged
The lower boundary of aqueduct 7 is extended below 7.2, rotary churning pile 1 extends to the both sides of aqueduct 7 along circuit longitudinal length；Adjacent churning
First is set to reinforce section 2 between stake 1, the outside of rotary churning pile 1 sets second to reinforce section 3, and described first, which reinforces section 2 and second, reinforces section
3 are arranged in the lower section of non-fragment orbit embankment 6, and described first, which reinforces section 2 and second, reinforces longitudinal length and churning of the section 3 along circuit
1 length of stake is identical, and the first reinforcing section 2 and second reinforces the bottom of section 3 and extends to the lower boundary of aqueduct 7 below 7.2；Without tiny fragments of stone, coal, etc. rail
Filling prefabricated resin mortar block 14 between the track plates 11 and screed 12 at the top of road embankment 6.
In such scheme, rotary churning pile 1 includes two campshed bodies 1.3, and two campshed bodies 1.3 are longitudinally arranged along non-fragment orbit circuit,
It is mutually twisted between pile body 1.3, pile body stake footpath is 0.5-0.7m；The distance between the rotary churning pile 1 and non-fragment orbit embankment 6 are
4-6m；The distance between the bottom 1.2 of rotary churning pile 1 and the lower boundary 7.2 of aqueduct 7 are 2-5m；The rotary churning pile 1 is along circuit
The distance between the end 1.1 of longitudinal direction and the external boundary 7.3 of aqueduct 7 are 8-12m.
In such scheme, it is grouting and reinforcing body that the first reinforcing section 2 and second, which reinforces section 3, and first, which reinforces section 2 and second, adds
Gu the top and bottom of section 3 are flushed, second reinforces the distance between the top of section 3 3.1 and the coboundary 7.1 of aqueduct 7 for 4-6m,
Second reinforces the height of 3 bottom of section 3.2 higher than the height of 1 bottom of rotary churning pile 1.2.
In such scheme, in addition to for monitoring the sedimentation and deformation of track and roadbed and the observation stake 8 of horizontal displacement, being used for
The deviational survey hole 9 of roadbed deeply mixing cement-soil pile and the peephole 10 for monitoring SEA LEVEL VARIATION in ground are monitored, the observation stake 8 is set
It is placed in non-fragment orbit curb 6.1, non-fragment orbit embankment toe 6.2 and the outside of rotary churning pile 1；The deviational survey hole 9 is arranged at no tiny fragments of stone, coal, etc.
Between track embankment 6 and rotary churning pile 1, the height of 9 bottom of deviational survey hole 9.1 is less than the height of 1 bottom of rotary churning pile 1.2；The peephole 10
The both sides of rotary churning pile 1 are arranged at, the bottom of peephole 10 extends to aqueduct coboundary top.
When wearing non-fragment orbit high-speed railway under aqueduct, railway ground is mollisol, using rotary churning pile and mini-valve tube
Slip casting is combined carry out basement process, reaches that subgrade deformation controls purpose, reduces the influence that aqueduct is constructed to railway in operation,
Ensure that railroad track and subgrade settlement meet code requirement；Meanwhile, non-fragment orbit differential settlement is filled using lifting track plates
Fill out prefabricated resin mortar block recovery technique to repair non-fragment orbit, Specific construction process is as follows：
(1) in the outer rotary churning pile 1 of the construction respectively formation water of aqueduct and the embankment both sides toe 6.2 of non-fragment orbit intersection
Mud wall curtain, the distance between rotary churning pile 1 and non-fragment orbit embankment 6 are 4-6m, preferably 5m, and rotary churning pile 1 is along circuit longitudinal direction
The distance between end 1.1 and the external boundary 7.3 of aqueduct 7 are that 8-12m, preferably 10m, i.e. rotary churning pile scope are aqueduct
Each 10m of both sides external boundary.Rotary churning pile 1 includes two campshed bodies 1.3, and two campshed bodies are longitudinally arranged along non-fragment orbit circuit, pile body it
Between be mutually twisted 0.1m, the overall square arrangement of rotary churning pile, pile body stake footpath is 0.5-0.7m, preferably 0.6m, pile body center
Spacing is 0.5m；Churning pile length wears more than aqueduct lower boundary 2m, i.e. rotary churning pile bottom under exceeding and aqueduct is following
The distance between boundary is preferably 2-5m, and rotary churning pile total length is not more than 25m.The working procedure of rotary churning pile is：Equipment is in place, injection
Playpipe, jet groutinl, tube drawing and flushing.Using double tube method, cement uses strength grade for the general of Po42.5 grades and the above
Logical portland cement or blast furnace cement, the ratio of mud of cement grout is 0.8：1~1：1.It can add as needed appropriate additional
Agent (CaCl2), incorporation should be determined by testing.Cement mortar pressure is according to the determination of field test situation, guiding test pile parameter：
Hydraulic pressure >=20MPa；Starch pressure >=0.6MPa.60~70L/min of emitted dose, 15~20cm/min of lifting speed.Subsurface 0~10
Rice, grouting pressure is 12~15MPa.10~30m grouting pressures, 15~20m.Rotary churning pile first applies a campshed nearest from railway, then
Apply the row of outermost one.
(2) injecting treatment is carried out to the main stress surface soil layer in ballastless track roadbed bottom, below rotation non-fragment orbit embankment
The outer both sides 5.0m of spray stake curtain in the range of set slip casting and form second and reinforce section 3, slip casting forms first between adjacent rotary churning pile
Reinforce section 2.After curtain with rotary jet grouting piles has been constructed, section 2 is reinforced in the second reinforcing section 3 of first constructing, then slip casting first of constructing.Range of grouting edge
Railway direction is identical with the reinforcing scope of rotary churning pile 1, i.e., first, which reinforces section 2 and second, reinforces longitudinal length and rotation of the section 3 along circuit
Spray the length of stake 1 identical.Injected hole is along railway longitudinal pitch 1.50m, and grouting and reinforcing wears structures coboundary 5m, lower boundary under
1m。
(3) slip casting uses sleeve valve barrel grouting technique, and first, which reinforces section 2, uses split the law slip casting, and second reinforces section 3 using pressure
Close method slip casting.All slip casting hole lengths, which are divided into, draws hole length and slip casting length.Mortar depositing construction requires that roadbed both sides are simultaneously symmetrical real
Apply.
(4) second injected holes for reinforcing section are straight hole 5, and 3 row's injected holes are implemented from rotary churning pile external boundary with 1.5m spacing,
Injected hole is arranged along the longitudinally spaced 1.5m in railway direction.First injected hole for reinforcing section includes inclined hole 4 and straight hole 5, the note of inclined hole 4
1.5m, 3m, 4.5m are arranged slurry point outside non-fragment orbit embankment toe respectively, and each slip casting point sets 1 respectively, 3,2 mini-valve tubes
Injected hole, inclined hole and vertical line angle are 20 ° -70 °, along railway longitudinal direction spacing 1.5m；The slip casting point distance of straight hole is without tiny fragments of stone, coal, etc. rail
Road levee slope pin 0m, 1.5m, 3m, injected hole is perpendicular to ground, longitudinal pitch 1.5m.
(5) sleeve valve barrel grouting construction draws hole using machinery, and projected depth is squeezed into by predetermined angular, carries out from bottom to top piecewise
Slip casting.Slip casting single hole technological process：Drilling → installation mini-valve tube → perfusion sleeve shell material → borehole cleaning → sealing → carry out slip casting is waited to coagulate
Sealing of hole after knot.Rig drilling diameter is not less than 100mm.Mini-valve tube is using external diameter 70mm polypropylene (PP-R) plastic pipe manufacture
Into tubing nominal pressure is not less than 1.5MPa.Slip casting section processes symmetrical 4 6~8mm of diameter extravasating hole per 0.5m, and overflow slurry
Circumferentially car goes out wide 3cm, depth 1.0mm groove at hole, and to be nested with rubber valve pocket, and electricity consumption adhesive plaster is fastened, bottom envelope
Close.Injecting paste material:Main material is the Portland cement of PO42.5 grades and the above；Auxiliary material is bentonite, water reducer
And accelerator (CaCl2).Mortar mix proportion (weight ratio) is preferably：Water：Cement=0.8~1:1.Grouting pressure：Open loop pressure 0.3
~0.4MPa, it is ensured that open loop pressure can break through sleeve shell material.0.2~0.4MPa of normal grouting pressure.Slip casting in the range of aqueduct
0.3~0.4MPa of pressure, 0.2~0.3MPa of above grouting pressure.Should be according to track deformation situation and grout absorption during slip casting
Situation adjusts grouting pressure in time.
(6) monitoring arrangement：1. each road rail top and sleeper arrange sight every 10 meters with chilli oil Wealthy in the range of basement process
Side point, one row of each setting observes stake 8 at 10m outside non-fragment orbit both sides curb, toe and toe, and longitudinal pitch 10m monitors rail
The sedimentation and deformation and horizontal displacement of road and roadbed.2. deviational survey hole 9 be set outside the toe of roadbed both sides at 1m, each 2 hole in roadbed both sides,
Totally 4 hole, hole depth exceedes the long 2m of rotary churning pile, is averagely arranged in basement process area, monitors roadbed deeply mixing cement-soil pile.3. respectively in rotation
Spray and water-level observation hole 10 is laid at each 2 meters of stake both sides, to monitor the situation of change of water level in ground.Rig pore-forming, lays 4 altogether
Hole.
(7) in the longitudinal both sides of the track plates 11 hanging bolt hole of non-fragment orbit, lifting apparatus is arranged in vertical direction, is used
The synchronous lifting track plates of four jack are to designing height above rail surface.
(8) to uniform pack prefabricated resin mortar block 14 between track plates 11 and screed 12, screed is in bedplate 13
On, mortar block thickness is determined according to design Uplifting amount, to be advisable less than design 5~10mm of Uplifting amount.Then foamed glue is used
Bar closed orbit guidance tape surrounding, it is ensured that surrounding is sealed, and reserved injected hole.
(9) slip casting machine is used, by reserved injected hole to injecting liquid resin under track plates, track plates are lower has time for filling
Untill gap.Liquid resin is bonded as one after condensing with track plates, the basic soap-free emulsion polymeization between existing mortar bag.
(10) prefabricated resin mortar block and existing screed Performance Match, modulus of elasticity are basically identical.Liquid resin requirement
It can be solidified in 30min, compression strength combines together with prefabricated mortar block, is not less than with track adhesion strength up to 30MPa
3MPa, modulus of elasticity and existing screed are basically identical.
Obviously, those skilled in the art can carry out various changes and the essence deformed without departing from this patent to the present invention
God and scope.So, if these modification and variation of this patent belong to the scope of patent claims and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and deformation.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure, it is characterised in that：Including being arranged at nothing
The rotary churning pile (1) of tiny fragments of stone, coal, etc. track embankment both sides, the rotary churning pile (1) is longitudinally arranged along non-fragment orbit circuit, rotary churning pile (1) with without the tiny fragments of stone, coal, etc.
Spaced apart between track embankment (6), rotary churning pile (1) bottom is extended to below aqueduct (7) lower boundary, churning
Stake (1) extends to aqueduct both sides along circuit longitudinal length；First is set to reinforce section (2), churning between adjacent rotary churning pile (1)
Second is set to reinforce section (3) on the outside of stake (1), the first reinforcing section (2) and the second reinforcing section (3) are arranged in non-fragment orbit road
Below dike (6), the first reinforcing section (2) and longitudinal length of the second reinforcing section (3) along circuit are identical with churning pile length, the
One reinforcing section (2) and second reinforcing section (3) bottom are extended to below aqueduct lower boundary；In the track plates (11) of non-fragment orbit
Prefabricated resin mortar block (14) is filled between screed (12).
Exist 2. wearing ballastless track roadbed Deformation control under aqueduct according to claim 1 with repairing structure, its feature
In：The rotary churning pile (1) includes two campshed bodies (1.3), and two campshed bodies are longitudinally arranged along non-fragment orbit circuit, between pile body mutually
Occlusion, pile body stake footpath is 0.5-0.7m；The distance between the rotary churning pile (1) and non-fragment orbit embankment (6) are 4-6m；The rotation
It is 2-5m to spray the distance between stake (1) bottom and aqueduct (7) lower boundary；The rotary churning pile along circuit longitudinal direction end with it is defeated
The distance between waterpipe external boundary is 8-12m.
Exist 3. wearing ballastless track roadbed Deformation control under aqueduct according to claim 1 with repairing structure, its feature
In：The first reinforcing section (2) and the second reinforcing section (3) are grouting and reinforcing body, and first, which reinforces section (2) and second, reinforces section
(3) the distance between top and aqueduct (7) coboundary are 4-6m, and described first, which reinforces section (2) and second, reinforces section (3) bottom
Portion is highly higher than rotary churning pile (1) bottom level.
Exist 4. wearing ballastless track roadbed Deformation control under aqueduct according to claim 1 with repairing structure, its feature
In：Also include the sedimentation and deformation for monitoring track and roadbed and the observation stake (8) of horizontal displacement, for monitoring roadbed deep water
The deviational survey hole (9) that prosposition is moved and the peephole (10) for monitoring SEA LEVEL VARIATION in ground, the observation stake are arranged at no tiny fragments of stone, coal, etc. rail
On the outside of road curb, non-fragment orbit embankment toe and rotary churning pile；The deviational survey hole be arranged at non-fragment orbit embankment and rotary churning pile it
Between, deviational survey hole bottom level is less than rotary churning pile bottom level；The peephole is arranged at rotary churning pile both sides, the extension of peephole bottom
To aqueduct coboundary.
5. ballastless track roadbed Deformation control and restorative procedure are worn under a kind of aqueduct, it is characterised in that：Non-fragment orbit with
The embankment both sides of aqueduct intersection construct respectively rotary churning pile (1) formation cement wall curtain, then successively on non-fragment orbit road
Carried out respectively on the outside of rotary churning pile (1) below dike and between adjacent rotary churning pile (1) injecting treatment formation second reinforce section (3) and
First reinforces section (2)；The track plates (11) of last lifting non-fragment orbit, track plates surrounding are sealed, in track plates (11) and sand
Fill prefabricated resin mortar block (14) between pulp layer (12), and by reserved injected hole to injecting liquid resin under track plates,
Untill all spaces under filling track plates.
6. method according to claim 5, it is characterised in that：The rotary churning pile is longitudinally arranged along non-fragment orbit circuit, rotation
Spray spaced apart between stake (1) and non-fragment orbit embankment (6), rotary churning pile (1) bottom is extended under aqueduct (7)
Below border, rotary churning pile extends to aqueduct both sides along circuit longitudinal length；Described first, which reinforces section (2) and second, reinforces section
(3) identical with rotary churning pile (1) length along the longitudinal length of circuit, the first reinforcing section (2) and second reinforcing section (3) bottom are extended to
Below aqueduct (1) lower boundary.
7. method according to claim 5, it is characterised in that：The rotary churning pile (1) includes two campshed bodies (1.3), two rows
Pile body is longitudinally arranged along non-fragment orbit circuit, and pile body is mutually twisted between (1.3), and pile body stake footpath is 0.5-0.7m；The churning
The distance between stake (1) and non-fragment orbit embankment (6) are 4-6m, rotary churning pile (1) bottom and aqueduct (7) lower boundary it
Between distance be 2-5m, the rotary churning pile (1) is 8- along the distance between end and aqueduct (7) external boundary of circuit longitudinal direction
12m。
8. method according to claim 5, it is characterised in that：Described first, which reinforces section (2), uses split the law slip casting, first
Reinforcing the injected hole of section includes inclined hole and straight hole, the slip casting point of inclined hole respectively outside non-fragment orbit embankment toe 1.5m, 3m,
4.5m arranges that the angle between inclined hole and vertical line is 20 ° -70 °, along the longitudinally spaced arrangement in railway direction；The slip casting point minute of straight hole
Not apart from non-fragment orbit embankment toe 0m, 1.5m, 3m arrangement, straight hole is perpendicular to ground, along the longitudinally spaced arrangement in railway direction.
9. method according to claim 5, it is characterised in that：Described second, which reinforces section (3), uses densification method slip casting, second
The injected hole for reinforcing section is straight hole, and multiple rows of injected hole is arranged from rotary churning pile external boundary with 1.5m spacing, and injected hole is along railway side
To longitudinally spaced arrangement.
10. method according to claim 5, it is characterised in that：Before the track plates of lifting non-fragment orbit, first arrangement is used
In observation stake (8), the survey for monitoring roadbed deeply mixing cement-soil pile of the sedimentation and deformation and horizontal displacement of monitoring track and roadbed
Inclined hole (9) and the peephole (10) for monitoring SEA LEVEL VARIATION in ground, the observation stake are arranged at non-fragment orbit curb, without the tiny fragments of stone, coal, etc.
On the outside of track embankment toe and rotary churning pile, the deviational survey hole is arranged between non-fragment orbit embankment and rotary churning pile, the observation
Hole is arranged at rotary churning pile both sides.
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| CN201710502316.4A CN107130475A (en) | 2017-06-27 | 2017-06-27 | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502316.4A CN107130475A (en) | 2017-06-27 | 2017-06-27 | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method |
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| CN110359329A (en) * | 2019-08-16 | 2019-10-22 | 成都交大铁发轨道交通材料有限公司 | Abolish device, breaking system and restructuring bankrupt in unballasted track bed plate post-cast strip |
| CN111501424A (en) * | 2020-05-08 | 2020-08-07 | 中铁二院工程集团有限责任公司 | Comprehensive treatment method for subgrade karst collapse |
| CN111677521A (en) * | 2020-06-30 | 2020-09-18 | 中国水利水电第五工程局有限公司 | High-pressure gas pipe settlement control method for subway interval tunnel construction |
| CN112176781A (en) * | 2019-07-05 | 2021-01-05 | 北京华铁时代建设发展有限公司 | Method for controlling subgrade settlement of high-speed rail operation |
| CN112228081A (en) * | 2020-10-24 | 2021-01-15 | 中铁一局集团有限公司 | Method for reinforcing pile foundation of shield tunnel side-through high-speed rail viaduct |
| CN114232649A (en) * | 2022-01-31 | 2022-03-25 | 中铁六局集团广州工程有限公司 | Construction method for filling earthwork of ballastless track roadbed |
| CN114607391A (en) * | 2022-04-08 | 2022-06-10 | 中南大学 | Pre-reinforcing construction method for unconsolidated strata of subway tunnel |
| GB2614319A (en) * | 2021-12-29 | 2023-07-05 | Geobear Int Oy | Railway Track Bed Strengthening |
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| CN112176781A (en) * | 2019-07-05 | 2021-01-05 | 北京华铁时代建设发展有限公司 | Method for controlling subgrade settlement of high-speed rail operation |
| CN110359329A (en) * | 2019-08-16 | 2019-10-22 | 成都交大铁发轨道交通材料有限公司 | Abolish device, breaking system and restructuring bankrupt in unballasted track bed plate post-cast strip |
| CN110359329B (en) * | 2019-08-16 | 2024-04-09 | 成都交大铁发轨道交通材料有限公司 | Unballasted track base plate post-cast strip breaking device, breaking system and breaking method |
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| GB2614319A (en) * | 2021-12-29 | 2023-07-05 | Geobear Int Oy | Railway Track Bed Strengthening |
| CN114232649A (en) * | 2022-01-31 | 2022-03-25 | 中铁六局集团广州工程有限公司 | Construction method for filling earthwork of ballastless track roadbed |
| CN114232649B (en) * | 2022-01-31 | 2022-08-09 | 中铁六局集团广州工程有限公司 | Construction method for filling earthwork of ballastless track roadbed |
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Application publication date: 20170905 |