CN108130825A - Subgrade of metro concrete replacement technique in special limiting condition - Google Patents
Subgrade of metro concrete replacement technique in special limiting condition Download PDFInfo
- Publication number
- CN108130825A CN108130825A CN201711493044.2A CN201711493044A CN108130825A CN 108130825 A CN108130825 A CN 108130825A CN 201711493044 A CN201711493044 A CN 201711493044A CN 108130825 A CN108130825 A CN 108130825A
- Authority
- CN
- China
- Prior art keywords
- concrete
- track
- railway roadbed
- sleeper
- static
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- 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
- E01B29/005—Making of concrete parts of the track in situ
-
- 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
- E01B2204/09—Ballastless systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses subgrade of metro concrete replacement techniques in a kind of special limiting condition, include the following steps：Curtain water stop is set；Safety devices are set, stay bolt is carried out to track；Even point type static(al) segmentation concrete；Static(al) dismantling concrete；Dismounting, assembling sleeper；Track supports；Artificial clear water；It mends, bar planting；Depth patching；Construction interface processing；Orbit measurement and accurate adjustment；Formwork supporting plate；Concreting；Track geometry status monitors.The method that the present invention removes railway roadbed concrete using piecemeal displacement, avoids because rail long-time large span is hanging, train is caused to derail；Concrete the old and new interface is handled using weighted cement penetrant crystalline material, effectively solves construction joint weakness；Dismantling concrete is reduced to removing the influence around region using the method that even segmentation of point type static(al), static(al) are removed, is avoided that surrounding concrete is caused to disturb, avoid damage to steel bar stress in structure.
Description
Technical field
The invention belongs to a kind of concrete replacement techniques, and in particular to subgrade of metro concrete in a kind of special limiting condition
Replacing process.
Background technology
How railway roadbed is reinforced concrete structure to the nothing that subway uses, because being become for a long time by external water erosion, alkaline matter,
The effects that rolling vibrations, the Elementary Function of concrete structure constantly decay, it may appear that concrete component gradually isolates spilling, structure
Cracking, tomography peel off, deformation collapses and phenomena such as being inclined to of disintegrating, and passage at any time, the geometric dimension of track can not protect
Hold original state, the operation security of serious threat to subway train.
When railway roadbed concrete corrupted, return and influence metro safety operation, need to railway roadbed concrete replacement reparation.It is however right
For the heavy traffic in city, subway stoppage in transit, which can bring the normal life of people, to be seriously affected, while to other traffic sides
Formula generates immense pressure.In order to ensure normal traffic, need not stop transport in subway, to railway roadbed concrete replacement
It repairs, ensure that metro operation.
However railway roadbed displacement is carried out under conditions of subway is not stopped transport and is repaired, many problems that can not go beyond are faced, such as：
（1）The country is without referential precedent, and existing city underground operator is also without identical case and feasible scheme；
（2）Associated specialist can not carry the feasible maintenance program of specification；（3）Concrete construction specification, ability after normal concrete pours 28 days
Design bearing requirements can be reached, concrete can be disintegrated during curing by external force or vibrations, be 5 hours when subway is often stopped in the daytime,
Period upkeep operation is 4 hours, concreting forming and hardening（Intensity reaches C30）Only 3.5 hours；（4）Damaged railway roadbed mixes
As soon as solidifying soil cannot time large area remove, otherwise without constraint track and the firm base of the small sleeper of fixation, subway just can not yet
Operation；（5）Removing railway roadbed concrete cannot cause to disturb to the concrete of surrounding and internal reinforcing bar, and otherwise repairing construction is exactly temporary
When, without durability；（6）Constrain after concrete removal supporting track and substitute small sleeper tool needs meet stablize,
Safety, the requirement of insulation, while to meet fountain standard；（7）It is outer that damage, which occur, in most railway roadbed concrete
The intrusion of water, water and secondary water in surrounding structure can influence young concrete hydration reaction and intensity；（8）Newly pour portion
The concrete of position both sides must not complete next day dismounting displacement pouring, and avoid newly pouring position concrete disturbance；（9）Replacement process
In every group of wheel cannot be pressed on the position of hot work in progress simultaneously；（10）Piecemeal construction of replacing will appear more construction joint, beat
The construction standards in relation to construction joint indwelling are broken；（11）Stray current collection net reinforcing bar can be damaged in railway roadbed demolishing process, is destroyed
Fountain standard.
Invention content
The present invention proposes to overcome shortcoming in the prior art, a kind of specifically limited the purpose is to provide
Subgrade of metro concrete replacement technique in condition.
The technical scheme is that：
Subgrade of metro concrete replacement technique, includes the following steps in a kind of special limiting condition：
（1）Curtain water stop is set
Three row's injected holes are made a call to plum blossom distribution at construction area both ends respectively, pitch-row 300mm, hole depth 500mm install sealing needle
Head, it is ensured that syringe needle is intact, ne-leakage, then Reperfu- sion modified epoxy sealing slurry, blocks secondary water intrusion construction part；
（2）Safety devices are set, stay bolt is carried out to track
After road heart cleaning, filling under the railway roadbed to come to nothing and small sleeper is reinforced and fixed with wood is pounded firmly, road heart both sides railway roadbed is mixed
Solidifying soil support top is reinforced；
（3）Even point type static(al) segmentation concrete
Dismounting position concrete structure will be needed to be separated with overall structure using the method for even point type machine drilling, punch depth
Depending on depth is removed, reinforcing bar in structure cannot be destroyed in drill process；
（4）Static(al) dismantling concrete
The railway roadbed concrete in the range of static(al) segmentation is removed using small-size concrete break-in tool, is picked in demolishing process using layering
The method removed is removed, and avoids damage to reinforcing bar；
（5）Dismounting, assembling sleeper
Small sleeper is dismantled, the sundries on sleeper is cleared up, and small sleeper and its accessory are checked, small sleeper and its accessory is deposited
It puts well, the part damaged is replaced in time；
（6）Track supports
During railway roadbed concrete removal, tie rod is set to each track for removing position, carries out temporary support reinforcing；
（7）Artificial clear water
The water for penetrating into construction part is cleaned out to without bright water and is remained；
（8）It mends, bar planting
Benefit muscle, bar planting are carried out to the reinforcing bar being corrupted to during concrete removal；
（9）Depth patching
The penetrating passage of the bottom of railway roadbed concrete and surrounding concrete structure weighted cement penetrant crystalline material after dismounting
It is blocked；
（10）Construction interface processing
Railway roadbed concrete and base concrete interface are cleaned out, then brushing weighted cement penetrant crystalline material is done at waterproof
It manages, secondary overlapping is carried out in work progress and is brushed；For doing dabbing processing on smooth contact surface；
（11）Orbit measurement and accurate adjustment
Before concreting, track and sleeper are accurately adjusted to former designed elevation；
（12）Formwork supporting plate：
Formwork supporting plate is installed, it is ensured that surfacing, piece are tight；
（13）Concreting：
By concrete material and water, ratio progress Site pours, and indwelling test block as required, levelling to pouring face progress, and
Do flashing slope；
（14）Track geometry status monitors
The track geometry status for completing position in work progress to construction is monitored in real time.
Described to mend, plant bar gauge higher than raw steel muscle, reinforcing bar is used and is welded to connect.
The step（13）When middle flashing slope makes, roadbed laterally sets 3% flashing slope, 3 in Curve Segment to ditch side
The lateral flashing slope for reducing stock side roadbed is not less than 1%.
The step（4）During static(al) dismantling concrete, the concrete that proxima luce (prox. luc) newly pours position both sides must not be removed.
The step（4）During static(al) dismantling concrete, interval is needed to remove again after every piece of railway roadbed concrete removal, and left
The railway roadbed of same position cannot be removed simultaneously under right track.
The beneficial effects of the invention are as follows：
The present invention provides subgrade of metro concrete replacement techniques in a kind of special limiting condition, and special concrete material is selected to apply
Work；The method for being removed displacement using piecemeal to railway roadbed concrete, is avoided because rail long-time large span is hanging, train is caused to take off
Rail；Concrete the old and new interface is handled using weighted cement penetrant crystalline material, makes New-old concrete Connection Density, strong
Degree improves more than 9%, effectively solves construction joint weakness, ensures structural integrity index request；Dismantling concrete is using even point
The method that the segmentation of formula static(al), static(al) are removed reduces to the influence around dismounting region, avoids that surrounding concrete is caused to disturb,
Avoid damage in structure steel bar stress and be allowed to connect with concrete by reinforcing bar vibrations conduction occur hair stitch and structure from
Analysis.Influence of the secondary water to concrete pouring quality in order to prevent sets curtain around construction area with plum blossom arrangement mode
Water proof, penetrating passage in plugging structure block the entrance of secondary water, ensure in concreting process because secondary water influences engineering
Quality.In railway roadbed removes replacement process, interval is removed, it is ensured that every group wheel can only there are one pressure wheels in the road of hot work in progress
On bed concrete；The segmentation of point type static(al) is connected using small-bore and avoids damage to reinforcing bar in structure, influences structure stress and stray electrical current
Protection；If there is reinforcing bar damages, connected using high standard reinforcement welding, it is ensured that the globality of stray current collection net reinforcing bar.
Description of the drawings
Fig. 1 be in the embodiment of the present invention 1 railway roadbed concrete replacement group to position view.
Wherein：
1 track, 2 sleeper.
Specific embodiment
With reference to the accompanying drawings of the specification and embodiment is to subgrade of metro concrete replacement work in special limiting condition of the present invention
Skill is described in detail：
Embodiment 1
Subgrade of metro concrete replacement technique, includes the following steps in a kind of special limiting condition：
（1）Curtain water stop is set
Three row's injected holes are made a call to plum blossom distribution at construction area both ends respectively, pitch-row 300mm, hole depth 500mm install sealing needle
Head, it is ensured that syringe needle is intact, ne-leakage, then Reperfu- sion modified epoxy sealing slurry, blocks secondary water intrusion construction part.
（2）Safety devices are set, stay bolt and support are carried out to track
It is wooden to filling reinforcing under the railway roadbed to come to nothing and small sleeper and fixed with pounding firmly after road heart cleaning.To road heart both sides railway roadbed coagulation
Native support top is reinforced, and prevents from railway roadbed being caused to sink due to train shakes.
During railway roadbed concrete removal, setting tie rod prevents track from generating transverse shift, keeps double track horizontal distance constant.
Setting support ensures that train can be travelled steadily.To ensure concrete 2:Completion is poured before 00, thus railway roadbed remove position without
Casting concrete on the day of method to prevent track occurred level or vertical displacement, needs to face each track for removing position
When bracing reinforcement, support with stablize, insulation etc. characteristics, ensure train operation safety.
（3）Even point type static(al) segmentation concrete
Dismounting position concrete structure will be needed to be separated with overall structure using the method for even point type machine drilling, punch depth
Depending on depth is removed, reinforcing bar in structure cannot be destroyed in drill process, fountain structure is caused to destroy, prevents from mixing
Surrounding concrete structural perturbation is caused in solidifying soil demolishing process.
（4）Static(al) dismantling concrete
The railway roadbed concrete in the range of static(al) segmentation is removed using the small-size concretes such as pneumatic pick break-in tool, is used in demolishing process
The method that layering is rejected is removed, and avoids shaking excessive, and surrounding structure is caused to disturb, reinforcing bar is avoided damage in demolishing process, is caused
Stray current collection net is destroyed.
（5）Dismounting, assembling sleeper
In order to ensure to remove depth and substrate interface water-proofing treatment, need to dismantle small sleeper, clear up the sundries on sleeper, and to small
Sleeper and its accessory are checked, small sleeper and its accessory are stored, the timely replacement damaged.Small sleeper is prefabricated component,
If sleeper damage small in demolishing process must be replaced, all felt pads renew, and partial destruction parts renew, and measure and monitor and adjust
The position and direction of small sleeper, have special messenger to be assembled using professional tool.
（6）Track supports
To ensure concrete 2:Completion is poured before 30, thus railway roadbed remove position can not the same day casting concrete, to prevent track
Occurred level or vertical displacement need to carry out temporary support reinforcing to track, and track is supported using self-control support equipment
It reinforces, track is made to keep horizontal distance and vertical height constant, it is ensured that operation security.
（7）Artificial clear water
Contained external infiltration water enters construction part in structure, to ensure construction quality, water is cleaned out, it is impossible to have bright
Water remains.
（8）It mends, bar planting
As being corrupted to reinforcing bar during railway roadbed concrete removal, it is necessary to mend muscle, bar planting.It mends, plant bar gauge higher than raw steel muscle, steel
Muscle is used and is welded to connect.
（9）Depth patching
The penetrating passage of the bottom of railway roadbed concrete and surrounding concrete structure weighted cement penetrant crystalline material after dismounting
It is blocked, ensures to be invaded by secondary water in concreting process or in solidification process.
（10）Construction interface processing
There is crack, hole, and then develop into penetrating passage with base concrete interface junction in railway roadbed concrete in order to prevent,
Linkage interface must be cleaned out, then brushing weighted cement penetrant crystalline material does water-proofing treatment, has two in work progress
Secondary overlapping is brushed.For also needing to do dabbing processing on smooth contact surface.
（11）Orbit measurement and accurate adjustment
Track and sleeper are accurately adjusted to former design mark by professional orbit measurement personnel, adjustment personnel before concreting
Height makes track, sleeper restore former designed elevation.
（12）Formwork supporting plate
It is required that surfacing, piece is tight, and hygroscopicity is small, firm supporting.
（13）Concreting
By concrete material and water, ratio progress Site pours, and indwelling test block as required.It is levelling to pour face, does flashing
Slope, roadbed laterally set 3% weathering to ditch side, and 3 in Curve Segment, which is rotated when setting track superelevation, raises and reduce track
During with short sleeper, roadbed is rotated with track, and the transverse drainage slope that should ensure that reduces stock side roadbed is not less than 1%.
（14）Concrete curing
It needs to carry out water curing in the curing process, using the use environment temperature water in concrete strength C20, in maintenance processes
Water temperature is gradually decrease to 1 DEG C, so that it is guaranteed that expansion multiplying power control is 0.03% after concrete curing.
（15）Track geometry status monitors
Professional monitors the track geometry status that position is completed with construction in real time in work progress, ensures track geometry
Size does not deform, it is ensured that train operating safety.
According to the position of track 1 and its lower sleeper 2 during railway roadbed concrete replacement, need to carry out according to following principles of forming a team.
Railway roadbed concrete replacement group is to principle：
（1）Wheel centre distance is 2.2m, pours position and should meet Train Wheel and cannot be pressed in simultaneously and new remove or pour on displacement point；
（2）The new concrete for pouring position both sides must not complete next day dismounting displacement pouring；
（3）Railway roadbed concrete replacement by taking Fig. 1 as an example, group are carried out replacement sequence by table 1：
1 group of table is to replacing sequence list
Advantages of the present invention：
（1）The present invention is by a large amount of research and simulation test, it is determined that horizontal rail square stay bolt, outstanding rail stent, dot connective type static(al)
One systems such as segmentation, static(al) are removed, High-tech Material pours, construction joint infiltration connection, the displacement of curtain water proof, piecemeal, cooling maintenance
Row method is replied by the evaluation of designing institute for several times and expert, is considered a kind of effective and feasible scheme.
（2）Domestic and international associated materials are screened, select with Portland cement, quartz and quartz sand etc. for mainly into
Point, the special concrete material with high-strength, early solidifying, microdilatancy characteristic.To each material different environment, temperature,
Under the conditions of humidity etc., repetition test hardening time, mass intensity, expansion multiplying power, ratio of mud variation, final index and whole number
According to, finally have selected Germany a product.Construction simulation environment, temperature carry out up to a hundred tests to the ratio of mud of the material,
The ratio of mud is accurate within every cubic metre of 10ml.It needs to carry out water curing in the curing process, using in concrete strength C20
When use environment temperature water, water temperature is gradually decrease to 1 DEG C in maintenance processes, so that it is guaranteed that expansion multiplying power control after concrete curing
0.03%.
（3）The method for being removed displacement using piecemeal to railway roadbed concrete, is avoided because rail long-time large span is hanging, made
It derails into train.But this method has broken requirement of the construction standards about construction joint, construction joint, which increases, can influence ballast bed structure
Globality, be infiltration weak link, influence pouring quality.We are tied using a kind of weighted cement infiltration in U.S. thus
Brilliant material（Penetron Integral Capillary Concrete Waterproofing Systems）It is new to concrete
Old interface is handled, the material can simultaneously to the two-way interior penetrant crystalline of New-old concrete, make New-old concrete Connection Density,
Intensity improves more than 9%, effectively solves construction joint weakness, ensures structural integrity index request.
（4）Dismantling concrete is reduced using the method that even segmentation of point type static(al), static(al) are removed to removing the shadow around region
It rings, avoids that surrounding concrete is caused to disturb, avoid damage to steel bar stress in structure and be allowed to and mix by reinforcing bar vibrations conduction
There is hair seam and structure isolation in solidifying soil connection.
（5）In the case where subway is not stopped transport, it is 0 to allow the construction time daily：00-4：30, special concrete intensity reaches
3.5-4 hours are needed to C30, so pouring construction can not be completed on the day of concrete removal, to prevent track occurred level or hanging down
Straight displacement is supported reinforcing to each track for removing position, and support must be stable and firm, prevents train wheel from rolling generation
Vibrations, while train is avoided, which to roll, makes Rail inspection change, and jeopardizes train operation；Support will also have insulating properties,
Prevent rail from generating electrochemical corrosion because of stray electrical current.
（6）Influence of the secondary water to concrete pouring quality in order to prevent, with plum blossom arrangement mode around construction area
Curtain water proof is set, and penetrating passage in plugging structure blocks the entrance of secondary water, ensures in concreting process because of secondary water
Influence construction quality.
（7）In railway roadbed removes replacement process, it is contemplated that train minimum Wheel centre distance is 2.2 meters, and every piece of railway roadbed coagulation
Soil needs interval to remove again, and the railway roadbed of same position can not be removed simultaneously under the track of left and right after removing, it is ensured that every group of vehicle
Wheel can only there are one pressure wheels on the railway roadbed concrete of hot work in progress.
（8）The segmentation of point type static(al) is connected using small-bore and avoids damage to reinforcing bar in structure, influences structure stress and stray electrical current
Protection；If there is reinforcing bar damages, connected using high standard reinforcement welding, it is ensured that the globality of stray current collection net reinforcing bar.
Claims (5)
1. a kind of subgrade of metro concrete replacement technique in special limiting condition, it is characterised in that：Include the following steps：
（1）Curtain water stop is set
Three row's injected holes are made a call to plum blossom distribution at construction area both ends respectively, pitch-row 300mm, hole depth 500mm install sealing needle
Head, it is ensured that syringe needle is intact, ne-leakage, then Reperfu- sion modified epoxy sealing slurry, blocks secondary water intrusion construction part；
（2）Safety devices are set, stay bolt is carried out to track
After road heart cleaning, filling under the railway roadbed to come to nothing and small sleeper is reinforced and fixed with wood is pounded firmly, road heart both sides railway roadbed is mixed
Solidifying soil support top is reinforced；
（3）Even point type static(al) segmentation concrete
Dismounting position concrete structure will be needed to be separated with overall structure using the method for even point type machine drilling, punch depth
Depending on depth is removed, reinforcing bar in structure cannot be destroyed in drill process；
（4）Static(al) dismantling concrete
The railway roadbed concrete in the range of static(al) segmentation is removed using small-size concrete break-in tool, is picked in demolishing process using layering
The method removed is removed, and avoids damage to reinforcing bar；
（5）Dismounting, assembling sleeper
Small sleeper is dismantled, the sundries on sleeper is cleared up, and small sleeper and its accessory are checked, small sleeper and its accessory is deposited
It puts well, the part damaged is replaced in time；
（6）Track supports
During railway roadbed concrete removal, tie rod is set to each track for removing position, carries out temporary support reinforcing；
（7）Artificial clear water
The water for penetrating into construction part is cleaned out to without bright water and is remained；
（8）It mends, bar planting
Benefit muscle, bar planting are carried out to the reinforcing bar being corrupted to during concrete removal；
（9）Depth patching
The penetrating passage of the bottom of railway roadbed concrete and surrounding concrete structure weighted cement penetrant crystalline material after dismounting
It is blocked；
（10）Construction interface processing
Railway roadbed concrete and base concrete interface are cleaned out, then brushing weighted cement penetrant crystalline material is done at waterproof
It manages, secondary overlapping is carried out in work progress and is brushed；For doing dabbing processing on smooth contact surface；
（11）Orbit measurement and accurate adjustment
Before concreting, track and sleeper are accurately adjusted to former designed elevation；
（12）Formwork supporting plate
Formwork supporting plate is installed, it is ensured that surfacing, piece are tight；
（13）Concreting
By concrete material and water, ratio progress Site pours, and indwelling test block as required, levelling to pouring face progress, and
Do flashing slope；
（14）Track geometry status monitors
The track geometry status for completing position in work progress to construction is monitored in real time.
2. subgrade of metro concrete replacement technique in a kind of special limiting condition according to claim 1, it is characterised in that：
Described to mend, plant bar gauge higher than raw steel muscle, reinforcing bar is used and is welded to connect.
3. subgrade of metro concrete replacement technique in a kind of special limiting condition according to claim 1, it is characterised in that：
The step（13）When middle flashing slope makes, roadbed laterally sets 3% flashing slope to ditch side, and 3 in Curve Segment reduces stock one
The lateral flashing slope of side roadbed is not less than 1%.
4. subgrade of metro concrete replacement technique in a kind of special limiting condition according to claim 1, it is characterised in that：
The step（4）During static(al) dismantling concrete, the concrete that proxima luce (prox. luc) newly pours position both sides must not be removed.
5. subgrade of metro concrete replacement technique in a kind of special limiting condition according to claim 1, it is characterised in that：
The step（4）During static(al) dismantling concrete, interval is needed to remove again, and under the track of left and right after every piece of railway roadbed concrete removal
The railway roadbed of same position cannot be removed simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711493044.2A CN108130825B (en) | 2017-12-31 | 2017-12-31 | Subgrade of metro concrete replacement technique in special limiting condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711493044.2A CN108130825B (en) | 2017-12-31 | 2017-12-31 | Subgrade of metro concrete replacement technique in special limiting condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108130825A true CN108130825A (en) | 2018-06-08 |
| CN108130825B CN108130825B (en) | 2019-03-19 |
Family
ID=62394196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711493044.2A Active CN108130825B (en) | 2017-12-31 | 2017-12-31 | Subgrade of metro concrete replacement technique in special limiting condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108130825B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846951A (en) * | 2019-10-14 | 2020-02-28 | 中铁第四勘察设计院集团有限公司 | Integral replacement method for ballastless track bed of subway under uninterrupted operation condition |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037737A (en) * | 2014-08-06 | 2016-03-22 | 東日本旅客鉄道株式会社 | Horizontal movement prevention structure for sleeper |
| CN105672693A (en) * | 2016-01-22 | 2016-06-15 | 陕西省建筑科学研究院 | Supporting method for high-rise building shear wall concrete replacement |
| CN106639349A (en) * | 2016-12-14 | 2017-05-10 | 广西建工集团第建筑工程有限责任公司 | Construction method for partial replacement of concrete column |
| CN106760615A (en) * | 2016-12-30 | 2017-05-31 | 武汉大学 | A kind of ruggedized construction and its construction method for shear wall concrete replacement |
| CN106988169A (en) * | 2017-05-16 | 2017-07-28 | 中国铁道科学研究院铁道建筑研究所 | A kind of transverse direction pulls out the system and method that track plates replacing is carried out after rail |
-
2017
- 2017-12-31 CN CN201711493044.2A patent/CN108130825B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037737A (en) * | 2014-08-06 | 2016-03-22 | 東日本旅客鉄道株式会社 | Horizontal movement prevention structure for sleeper |
| CN105672693A (en) * | 2016-01-22 | 2016-06-15 | 陕西省建筑科学研究院 | Supporting method for high-rise building shear wall concrete replacement |
| CN106639349A (en) * | 2016-12-14 | 2017-05-10 | 广西建工集团第建筑工程有限责任公司 | Construction method for partial replacement of concrete column |
| CN106760615A (en) * | 2016-12-30 | 2017-05-31 | 武汉大学 | A kind of ruggedized construction and its construction method for shear wall concrete replacement |
| CN106988169A (en) * | 2017-05-16 | 2017-07-28 | 中国铁道科学研究院铁道建筑研究所 | A kind of transverse direction pulls out the system and method that track plates replacing is carried out after rail |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846951A (en) * | 2019-10-14 | 2020-02-28 | 中铁第四勘察设计院集团有限公司 | Integral replacement method for ballastless track bed of subway under uninterrupted operation condition |
| CN110846951B (en) * | 2019-10-14 | 2021-04-06 | 中铁第四勘察设计院集团有限公司 | Integral replacement method for ballastless track bed of subway under uninterrupted operation condition |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108130825B (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106868959B (en) | A kind of method that high ferro non-fragment orbit circuit is quickly repaired | |
| CN103410063B (en) | A kind of slip-casting lifting fast repairing method for sedimentation non-fragment orbit | |
| CN108385455A (en) | A kind of board-like Construction of Ballastless Track maintenance activity method of cast-in-place railway roadbed | |
| CN111676819A (en) | Jacking construction method for combined type temporary beam continuous reinforced line large-span frame structure bridge | |
| CN104153259A (en) | Rapid repairing method for sunken ballastless track through grouting lifting | |
| JP3234188U (en) | High-strength curve Formwork connection structure on ultra-flat ground | |
| CN104131498A (en) | Lifting repair method for ballastless track with settled curved section | |
| CN205662837U (en) | Overhead bridge transformation structure | |
| CN105421254B (en) | In-situ repairing method of upper pinner of rail transit bridge support and pinner formwork | |
| CN107083730A (en) | A kind of prefabricated PC construction refuse regenerated aggregate road and its construction method | |
| CN207267954U (en) | A kind of prefabricated PC construction refuse regenerated aggregate road | |
| CN106436492A (en) | Maintaining method of base plates of CRTS II-shaped plate type ballastless tracks | |
| CN107476205A (en) | A kind of modulus type expansion joint rapid-maintenance changes construction method | |
| CN113089394A (en) | Mechanical lifting and grouting reinforcement rapid repairing method for supporting layer of double-block ballastless track | |
| CN105926470A (en) | Transformation method of elevated bridge | |
| CN111576106A (en) | Construction method for rapidly pushing and replacing ballastless track structure of passenger special line | |
| CN108130825B (en) | Subgrade of metro concrete replacement technique in special limiting condition | |
| CN106906704B (en) | High-speed rail non-fragment orbit repairs roadbed physical isolation method | |
| CN108385456A (en) | A kind of board-like ballastless track bed board integral replacing method of cast-in-place railway roadbed | |
| CN108755394A (en) | A kind of method of presstressed reinforcing steel reinforcement bridge abnormity pier stud | |
| CN103276645A (en) | Precast pile, beam and slab renovation technology for diseases of existing line tunnel base | |
| CN113669083B (en) | Tunnel repairing structure based on load conversion and cap type and construction method thereof | |
| CN115404731A (en) | Construction method for rapidly replacing double-block sleeper in skylight period | |
| CN111321636A (en) | Beam structure and method for rapidly and in-situ treating railway tunnel bottom plate diseases | |
| CN108385454A (en) | A kind of railway plate-type ballastless track working drawing review operational method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 300000 room 1-1-2401-a, liboran, heiniucheng Road, Hexi District, Tianjin Patentee after: Tianjin City Jin Rongtong Nuclear Engineering Co. Ltd. repair Address before: 300000 1-1-2401-A room, black bull City Road, Tianjin, Xiqing. Patentee before: Tianjin City Jin Rongtong Nuclear Engineering Co. Ltd. repair |