CN114575207A - Method for treating diseases of post-cast strip of ballastless track base plate - Google Patents
Method for treating diseases of post-cast strip of ballastless track base plate Download PDFInfo
- Publication number
- CN114575207A CN114575207A CN202210254324.2A CN202210254324A CN114575207A CN 114575207 A CN114575207 A CN 114575207A CN 202210254324 A CN202210254324 A CN 202210254324A CN 114575207 A CN114575207 A CN 114575207A
- Authority
- CN
- China
- Prior art keywords
- post
- cast strip
- track
- concrete
- breaking
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 201000010099 disease Diseases 0.000 title claims abstract description 14
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 20
- 238000004873 anchoring Methods 0.000 claims abstract description 18
- 238000009418 renovation Methods 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 31
- 229910000831 Steel Inorganic materials 0.000 description 24
- 239000010959 steel Substances 0.000 description 24
- 238000005246 galvanizing Methods 0.000 description 3
- 239000011433 polymer cement mortar Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002986 polymer concrete Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- HVIBDEARFMWSND-WNKXUTMESA-N φ 27 Chemical compound C([C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H]([C@@H](C)CC)C(N)=O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCCN)NC(=O)[C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(N)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CO)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CO)NC(=O)[C@@H](NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@@H](NC(=O)CNC(=O)[C@H](CC(O)=O)NC(=O)[C@H](C)NC(=O)[C@@H](N)CC=1NC=NC=1)C(C)C)[C@@H](C)O)C1=CC=C(O)C=C1 HVIBDEARFMWSND-WNKXUTMESA-N 0.000 description 1
Images
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of ballastless track maintenance, and particularly relates to a method for remedying diseases of post-cast strip of a ballastless track base plate, which adopts a high-pressure water jet technology to clean damaged post-cast strip concrete and a mortar layer, reinject the concrete, repair the mortar layer, and finally recover the track and perform fine adjustment on the track on the principle of ensuring the operation safety of the track. In the renovation process, the existing track plate is not damaged, the influence of construction on an operation line is reduced as much as possible, flexible control can be realized according to the construction progress condition in the renovated skylight, and the driving safety of the line is ensured; the specific processing is divided into a preparation phase, an implementation phase and a recovery phase, and the processing sequence is as follows. A preparation stage: anchoring the track slab in the anchoring area by planting bars, chiseling concrete of a post-cast strip of the outer leakage base plate, and limiting the buckling upper arch of the base plate; the implementation stage is as follows: the high-pressure water jet operation mechanism is installed on site, the protection and drainage facilities are installed, the high-pressure water jet removes the damaged post-cast strip concrete and mortar layer 2, and the high-pressure gun is held by hand to assist in removal.
Description
Technical Field
The invention belongs to the technical field of ballastless track maintenance, and particularly relates to a method for remedying diseases of post-cast strip of a ballastless track base plate.
Background
The long bridge section base plate post-cast strip is a seam reserved during construction, and aims to release the shrinkage stress of concrete and backfill the main concrete with micro-expansion concrete after the main concrete is poured for a certain time. Therefore, the post-cast strip joint surface is a new and old concrete interface, and compared with a common section, the position is more prone to crack and even seriously deteriorated.
At present, a common treatment method for severe deterioration of a post-cast strip of a base plate is plate lifting chiseling repair, and the method is long in time use, high in cost, slow in effect taking and not in line with the characteristics of less time use and small disturbance in high-speed railway maintenance. And a standard disease treatment method which is small in damage and meets the time standard of high-speed railway maintenance is lacked.
Disclosure of Invention
The invention aims to provide a method for remedying the diseases of the post-cast strip of a ballastless track base plate, which overcomes the defects of the prior art, does not damage the existing track plate, reduces the influence of construction on an operation line as much as possible, can flexibly control the renovation skylight according to the construction progress condition, and ensures the driving safety of the line.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a method for remedying diseases of a post-cast strip of a ballastless track base plate comprises the following steps:
a preparation stage:
A. dividing the renovation section into an anchoring area and a replacement area according to the position of the post-damage casting strip, and planting bars on the track slab of the anchoring area for anchoring;
B. manually chiseling and cleaning the post-cast strip to expose the platform concrete, and reserving complete internal reinforcing steel bars;
the implementation stage is as follows:
A. installing high-pressure water jet breaking systems on two sides of the post-damage casting strip to complete connection installation and related inspection;
B. mounting a protective baffle, an anti-collision wall and a protective enclosure at two sides of the post-damage casting belt, placing a waterproof sandbag and blocking a water drainage hole, and respectively placing sewage suction pipes in the enclosed areas of the waterproof sandbags at two sides of the track plate;
C. breaking the damaged post-cast strip concrete by using high-pressure water jet according to the sequence of firstly the outer side of the line, then the line, firstly the upper layer and then the lower layer;
D. the damaged post-cast strip is broken by adopting a handheld high-pressure gun to assist in clearing the incompletely broken part;
and (3) a recovery stage:
A. pouring concrete again on the cast strip after the damage is removed, wherein the pouring height is flush with the upper surface of the base plate, and the base plate on the outer side of the wide track slab is provided with a drainage slope not less than 6%;
B. grouting a mortar layer again, performing U-shaped buckling on the track slab after the edge of the mortar layer is sealed, and measuring the position of the rechecked track slab again after buckling;
C. and finely adjusting the track to finish the renovation.
Furthermore, the standard of the bar planting anchoring is 8 bar planting of each track plate, 40 or 48 bar planting of a work point is total, the diameter of the bar planting drill hole is 32mm, and the drilling depth is 390 mm.
Furthermore, after the post-cast strip is chiseled and cleaned to expose the platform concrete, a lateral stop block is arranged on one side of the post-cast strip, the length of the lateral stop block is 0.8m, the upper width of the lateral stop block is 0.59m, the lower width of the lateral stop block is 0.4m, the lateral stop block is flush with the top surface of the track slab, and the top surface of the lateral stop block forms a 2% drainage slope from the upper edge of the track slab to the outer side of the line.
Further, the side direction baffle includes that limiting plate and perpendicular limiting plate are provided with two anchor connecting pieces, the limiting plate includes no muscle rubber slab and sets up corrosion resistant plate and hot-galvanize steel sheet in no muscle rubber slab both sides respectively, and the anchor connecting piece is connected with hot-galvanize steel sheet.
Further, the high-pressure water jet breaking system comprises an inner side actuating mechanism, an outer side actuating mechanism and a pneumatic control box, wherein the inner side actuating mechanism and the outer side actuating mechanism are respectively installed on two sides of the post-cast strip, and the pneumatic control box is used for controlling the inner side actuating mechanism and the outer side actuating mechanism and is respectively connected with the water supply vehicle through the high-pressure pump machine.
Further, the sequence of line outside first and line after line, upper layer first and lower layer later specifically includes:
(1) firstly, breaking the upper concrete layer of the post-cast strip by adopting an outer side actuating mechanism, wherein the breaking range is controlled within the 678mm width range of the damaged post-cast strip, and the breaking depth is 50 cm;
(2) adjusting the height of a gun rod of the outer actuating mechanism to a position between the lower-layer reinforcement cages of the post-cast strip, replacing the gun rod and the spray head, and breaking the lower-layer concrete;
(3) and respectively breaking the upper concrete layer and the lower concrete layer of the damaged post-cast strip by adopting an inner side actuating mechanism according to the steps.
Compared with the prior art, the invention has the following beneficial effects:
the method adopts the high-pressure water jet technology to clean the damaged casting belt concrete and the mortar layer on the basis of ensuring the operation safety of the line, and then re-pours the concrete, repairs the mortar layer, and finally recovers the line and carries out fine adjustment. In the renovation process, the existing track plate is not damaged, the influence of construction on an operation line is reduced as much as possible, flexible control can be carried out in the renovation skylight according to the construction progress condition, and the driving safety of the line is ensured.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a schematic view of the rail plate processing with the post-damaged strip in place in the plate.
FIG. 3 is a schematic view of the rail plate processing with the post-damaged strip at the plate end.
Fig. 4 is a track slab bar planting layout.
Fig. 5 is a detailed view of the bar planting of the track slab of the bridge section.
Fig. 6 is a mounting plan view of the lateral stopper.
Fig. 7 is a schematic structural view of the lateral stopper.
FIG. 8 is a schematic diagram of high pressure water jet break-down.
Fig. 9 is an installation schematic diagram of the pressing and limiting device.
In the figure: 1. a track plate; 2. a mortar layer; 3. a base plate; 4. drilling; 5. planting bars; 6. a lateral baffle; 61. a stainless steel plate; 62. a non-rib rubber plate; 63. hot dip galvanized steel sheet; 64. an anchor connection; 7. an outboard actuator; 8. an inboard actuator; 9. a pneumatic control box; 10. compress tightly stop device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-9, the method for treating the diseases of the post-cast strip of the ballastless track base plate comprises a preparation stage, an implementation stage and a recovery stage, wherein the treatment sequence is as follows.
A preparation stage: and (3) anchoring the anchor area track plate 1 with steel bars 5 → chiseling concrete of the post-cast strip of the outer leakage base plate 3 → limiting the buckling and upwarping of the base plate 3.
The implementation stage is as follows: the field installation of the high-pressure water jet operation mechanism → the installation of the protection and drainage facility → the removal of the damaged post-cast strip concrete and mortar layer by the high-pressure water jet 2 → the auxiliary removal by a hand-held high-pressure gun.
And (3) a recovery stage: the post-cast strip is poured again → the mortar layer 2 is poured again → the track is finely adjusted.
1. Preparation phase
(1) Anchoring area track slab 1 embedded bar 5
Distribution of planted bars 5 of track slab 1
The renovation section is divided into an anchoring area and a replacement area according to the position of the post-damage casting strip, the track slab 1 is processed as shown in figures 2-4, 58 steel bars are planted on the track slab 1, and 540 or 48 steel bars are planted on one working point.
(5) standard for planting bars on track slab 1 of bridge section
The method comprises the following steps of planting bars 5 on a track slab 1 of a bridge section, drilling holes 4 by using a drilling machine according to identification, wherein the diameter of each drilled hole 4 is 32mm, the depth of each drilled hole 4 is 390mm, and the error is +/-20 mm; the bar planting 5 adopts a phi 27 pin, the length L of the pin is 350mm (160 mm in the base and 160mm in the track plate 1), and the error is +/-5 mm. The drilling 4 should be made perpendicular to the surface of the track plate 1, with a tolerance of 1 °. The performance index of the bonded bar 5 glue needs to meet the design requirement.
(iii) attention points of the track slab 1 and the bar planting 5
Setting out size of borehole 4: the center is 205mm away from the transverse center line of the track slab 1 and 166.6mm away from the stop shoulder (determined by measuring again on site). For the section with the mortar thickness larger than 30mm, the lengths of the drill hole 4 and the anchoring steel bar are plus the thickness of the actual mortar layer 2 to be increased by 30 mm.
Should adopt 4 equipment of non-vibrations drilling and special drill bit 4 constructions of driling, should use radar or other equipment to survey the reinforcing bar arrangement condition in track board 1 and the base at 5 design positions of bar planting before drilling 4, forbid drilling disconnected track board 1 and base reinforcing bar. When drilling 4, the position of the drill hole 4 and the depth of the drill hole 4 must be strictly controlled, and impurities in the hole are removed immediately after drilling 4, so that cleanness and dryness in the hole are ensured. And after the steel bar planting 5 is finished and the steel bar planting 5 glue is completely cured, the subsequent engineering construction can be carried out. The existing embedded steel bars 5 of the track slab 1 can use the original embedded steel bars 5 completely; and (3) the existing embedded steel bars 5 of the track slab 1 fail, and repairing the embedded steel bars 5 of the track slab 1.
(2) Concrete chisel for 3-post-cast strip of outer leakage base plate
And (4) chiseling off the concrete with the exposed platform outside the post-pouring zone by adopting an electric pick in a manual mode. When the concrete is chiseled, the internal reinforcing steel bars cannot be damaged. And cleaning, packaging and transporting the on-site slag blocks to a designated storage position after the completion.
(3) Limiting of 3-buckling upper arch of base plate
After the concrete of the post-cast strip is removed, in order to prevent the front and rear base plates 3 of the post-cast strip from buckling and arching, a lateral stop block is arranged on one side of the post-cast strip to buckle and limit the base plates 3, as shown in fig. 6-7.
The length of the lateral block is 0.8m, the upper width is 0.59m, the lower width is 0.4m, the height of the lateral block is flush with the top surface of the track slab 1, and the top surface of the lateral block forms a 2% drainage slope from the upper edge of the track slab 1 to the outer side of the line. The lateral baffle 6 comprises a limiting plate and two anchor connectors 64 which are perpendicular to the limiting plate, the limiting plate comprises a non-rib rubber plate 62, and a stainless steel plate 61 and a hot galvanizing steel plate 63 which are respectively arranged on two sides of the non-rib rubber plate 62, and the anchor connectors 64 and the hot galvanizing steel plate 63 are connected, and the thickness of the hot galvanizing steel plate 63 is 5 mm; the thickness of the non-reinforced rubber plate 62 is 11mm, and the performance meets the requirement of temporary technical conditions (science and technology base [2009]135 ]) of CRTS II type slab ballastless track elastic limiting plates of passenger special line railways. The non-limiting plate area where the lateral stop blocks are connected with the track plate 1 and the base is filled with hard foam materials, and the thickness of the hard foam materials is 20mm and 10 mm.
The lateral stop blocks are cast in situ by C40 polymer concrete, the reinforcing steel bars are HRB400 and are connected with the beam surface by anchoring reinforcing steel bars, and the anchoring depth is 200 mm. The diameter of a drill hole 4 is 25mm, and the distribution of the reinforcing steel bars on the beam surface needs to be detected before the drill hole 4, so that the prestressed reinforcing steel bars are prevented from being drilled.
2. Implementation phase
(1) High-pressure water jet operation mechanism field installation
The high-pressure water jet breaking system mainly comprises a high-pressure water pump unit, an actuating mechanism, a pneumatic control box 9, a water supply vehicle, a sewage suction vehicle, a protection device and the like. Wherein the high-pressure water pump unit, the water supply vehicle and the sewage suction vehicle are arranged under the bridge during the operation, and the actuating mechanism, the pneumatic control box 9 and the protective device are arranged on the bridge.
The actuating mechanism of the device is divided into an inner actuating mechanism 8 and an outer actuating mechanism 7, and each actuating mechanism is provided with an independent high-pressure water pump unit and an independent control system, so that both sides inside and outside the post-cast strip can be simultaneously broken, independent parameter setting can be realized, and mutual interference of breaking operation is guaranteed.
And arranging the actuating mechanisms at two sides of the target post-cast strip, and adjusting the level of the mechanism bracket and the module. A cable connected with the high-pressure water pipe, the air pipe and the pneumatic control box 9, a mechanism moving left and right front and back, and a mechanism moving smoothness checking mechanism. And (4) installing a high-pressure gun rod, and adjusting the height of the gun rod to be opposite to the upper layer of the post-cast strip.
(2) Installation of protection and drainage facilities
Installing an inner/outer side post-cast strip protective baffle and clamping by using a wood wedge; installing an anti-collision wall protective baffle to prevent high-pressure water from damaging the anti-collision wall; and a protective enclosure is arranged to prevent water and slag from splashing.
And waterproof sandbags are placed between lines and on the side of the anti-collision wall, and the drainage hole is blocked by the sandbags, so that stone slag is prevented from entering. And sewage suction pipes are respectively arranged in the enclosed areas of the waterproof sandbags at the two sides of the track slab 1 and used for discharging waste water and small stone residues generated in the operation period to an underbridge sewage suction truck.
(3) Post-cast strip concrete with damaged and damaged broken by high-pressure water jet
The high-pressure water jet flow is used for breaking the damaged post-cast strip concrete in the sequence of firstly carrying out the outer side of the line, then carrying out the line, and firstly carrying out the upper layer and then carrying out the lower layer, and the concrete is as follows.
Breaking the upper concrete layer of post-cast strip outside the line
The upper concrete of the post-cast strip (namely the concrete protective layer on the upper surface of the post-cast strip steel reinforcement cage) is broken by the outer actuating mechanism 7, the breaking range is controlled within the 678mm width range of the post-cast strip, and the breaking depth is about 50 cm.
In the breaking process, the gun rod is close to the post-cast steel reinforcement cage as much as possible, the direction of the water jet is well controlled, and the high-pressure water jet is prevented from damaging the lower surface of the track slab 1.
Secondly, breaking the lower concrete of the post-cast strip at the outer side of the line
After the upper concrete of the post-cast strip is broken, a track plate 1 protective steel plate is arranged in a void area below the track plate 1/mortar layer 2, so that the track plate 1 is prevented from being damaged by high-pressure water jet when the lower concrete is broken.
And adjusting the height of the lance of the outer actuating mechanism 7 to the position between the lower steel reinforcement cage of the post-cast strip, replacing the lance and the spray head, and breaking the lower concrete (namely the concrete in the steel reinforcement cage). According to the steel reinforcement cage structure, avoid the shear force nail position, carry out the deep breaking of haplopore. After the gun rod stroke is used up, the lengthened gun rod is continuously connected until the gun rod reaches the set depth, and then the operation is stopped.
Thirdly, breaking the concrete on the upper layer of the post-cast strip at the inner side of the line
And (3) breaking the upper concrete of the post-cast strip on the inner side of the line by adopting an inner side actuating mechanism 8 according to the breaking method in the step I, and gradually lengthening the gun rod according to the requirement in the breaking process until the inner side and the outer side of the upper concrete of the post-cast strip are completely penetrated.
Breaking off concrete on lower layer of post-cast strip on inner side of line
After the upper layer of post-cast strip runs through completely, the track slab 1 protection plate is installed, the gun rod and the spray nozzle are replaced, the position of the gun rod is adjusted, the gun rod is lowered between the lower layer of reinforcement cages of the post-cast strip, lower layer concrete is broken, the position of a shear nail is avoided according to the structure of the reinforcement cages, and single-hole deep breaking is carried out. After the gun rod stroke is used up, the lengthened gun rod is continuously connected until the two sides are completely penetrated.
(4) Hand-held high pressure gun assisted purge
After the two sides are completely broken, visually checking the breaking condition of the post-cast strip, dismantling the actuating mechanism, and adopting a handheld high-pressure gun to assist in clearing the part which is not completely broken.
(5) Track plate 1 is withheld and is controlled spacing
If the time for removing the rear skylight of the rear pouring belt is not enough to finish the procedures of pouring the concrete and mortar layer 2 of the rear pouring belt and equal strength, the concrete and mortar layer can be poured into the subsequent skylight, but rotating, pressing and limiting devices are arranged on two sides of the track plate 1 to buckle and limit the track plate 1 left and right. The pressing and limiting devices 10 are symmetrically arranged in pairs.
3. Recovery phase
(1) Post-cast strip pouring
And (4) inspecting the steel bars in the damaged post-cast strip, adjusting the positions of the steel bars, and supplementing the defective steel bars, so that the reinforcing bars in the post-cast strip meet the design requirements.
And installing the template, pouring the damaged post-cast strip concrete again, wherein the pouring height is parallel and level to the upper surface of the base plate 3, and the base plate 3 outside the wide track slab 1 is provided with a drainage slope not less than 6%. The post-damage casting belt is made of polymer cement mortar, and the technical indexes of the post-damage casting belt need to meet the design requirements. The concrete pouring temperature is the locking temperature of the base plate 3 +/-5 ℃.
(2) Grouting of the mortar bed 2
The mortar layer 2 seals the edge, and the U-shaped buckling is carried out on the track plate 1, so that the track plate 1 is ensured not to float upwards in the pouring process of the mortar layer 2. And after the buckling, the position of the rechecking track plate 1 is measured again, and after the requirements are met, polymer cement mortar is poured, wherein the technical indexes of the polymer cement mortar need to meet the design requirements. The cavity of the track slab 1 is properly wetted before grouting.
(3) And (5) fine adjustment of the track.
And (4) finely adjusting the steel rail to meet the requirement of smoothness.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A method for remedying diseases of post-cast strip of ballastless track base plate is characterized by comprising the following steps: the method comprises the following steps:
a preparation stage:
A. dividing the renovation section into an anchoring area and a replacement area according to the position of the post-damage casting strip, and planting bars on the track slab of the anchoring area for anchoring;
B. manually chiseling and cleaning post-cast strip exposed platform concrete, and reserving complete internal reinforcing steel bars;
the implementation stage is as follows:
A. installing high-pressure water jet breaking systems on two sides of the post-damage casting strip to complete connection installation and related inspection;
B. mounting a protective baffle, an anti-collision wall and a protective enclosure at two sides of the post-damage pouring strip, placing a waterproof sandbag and blocking a water discharge hole, and respectively placing sewage suction pipes in the enclosed areas of the waterproof sandbag at two sides of the track slab;
C. breaking the damaged post-cast strip concrete by using high-pressure water jet according to the sequence of firstly breaking the outer side of the line and then breaking the line, and firstly breaking the upper layer and then breaking the lower layer;
D. the damaged post-cast strip is broken by adopting a handheld high-pressure gun to assist in clearing the incompletely broken part;
and (3) a recovery stage:
A. pouring concrete again on the cast strip after the damage is removed, wherein the pouring height is flush with the upper surface of the base plate, and the base plate on the outer side of the wide track slab is provided with a drainage slope not less than 6%;
B. grouting a mortar layer again, performing U-shaped buckling on the track slab after the edge of the mortar layer is sealed, and measuring the position of the rechecked track slab again after buckling;
C. and finely adjusting the track to finish the renovation.
2. The method for remedying the diseases of the post-cast strip of the ballastless track base plate according to claim 1, is characterized in that: the standard of the bar planting anchoring is 8 bar planting of each track slab, one working point is 40 or 48 bar planting, the diameter of the bar planting drill hole is 32mm, and the drilling depth is 390 mm.
3. The method for treating the diseases of the post-cast strip of the ballastless track base plate according to claim 1, characterized by comprising the following steps: after the post-cast strip is chiseled and cleaned to expose the platform concrete, a lateral stop block is arranged on one side of the post-cast strip, the length of the lateral stop block is 0.8m, the upper width of the lateral stop block is 0.59m, the lower width of the lateral stop block is 0.4m, the height of the lateral stop block is flush with the top surface of the track slab, and the top surface of the lateral stop block forms a 2% drainage slope from the upper edge of the track slab to the outer side of the line.
4. The method for remedying the diseases of the post-cast strip of the ballastless track base plate according to claim 3, wherein the method comprises the following steps: the lateral baffle comprises a limiting plate and two anchoring connecting pieces which are arranged perpendicular to the limiting plate, the limiting plate comprises a non-rib rubber plate and stainless steel plates and hot-dip galvanized steel plates which are arranged on two sides of the non-rib rubber plate respectively, and the anchoring connecting pieces are connected with the hot-dip galvanized steel plates.
5. The method for remedying the diseases of the post-cast strip of the ballastless track base plate according to claim 1, is characterized in that: the high-pressure water jet breaking system comprises an inner side actuating mechanism, an outer side actuating mechanism and a pneumatic control box for control, wherein the inner side actuating mechanism and the outer side actuating mechanism are respectively arranged on two sides of the post-cast strip, and are respectively connected with the water supply vehicle through high-pressure pumps.
6. The method for treating the diseases of the post-cast strip of the ballastless track base plate according to claim 5, characterized by comprising the following steps: the order of line outside line after line, upper strata after lower floor of elder generation specifically includes:
(1) firstly, breaking the upper concrete layer of the post-cast strip by adopting an outer side actuating mechanism, wherein the breaking range is controlled within the 678mm width range of the damaged post-cast strip, and the breaking depth is 50 cm;
(2) adjusting the height of a gun rod of the outer actuating mechanism to a position between the lower-layer reinforcement cages of the post-cast strip, replacing the gun rod and the spray head, and breaking the lower-layer concrete;
(3) and respectively breaking the upper concrete layer and the lower concrete layer of the damaged post-cast strip by adopting an inner side actuating mechanism according to the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254324.2A CN114575207A (en) | 2022-03-15 | 2022-03-15 | Method for treating diseases of post-cast strip of ballastless track base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254324.2A CN114575207A (en) | 2022-03-15 | 2022-03-15 | Method for treating diseases of post-cast strip of ballastless track base plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114575207A true CN114575207A (en) | 2022-06-03 |
Family
ID=81774568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210254324.2A Pending CN114575207A (en) | 2022-03-15 | 2022-03-15 | Method for treating diseases of post-cast strip of ballastless track base plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114575207A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203295906U (en) * | 2013-06-08 | 2013-11-20 | 中国水利水电第十三工程局有限公司 | Novel buckling and pressing device of track board |
| CN103590288A (en) * | 2013-11-25 | 2014-02-19 | 中铁第四勘察设计院集团有限公司 | Field maintenance method for CRTSII slab-track track boards |
| US20140203094A1 (en) * | 2011-08-31 | 2014-07-24 | Railway Engineering Research Institute of China Academy of Railway Sciences | Ballastless track system |
| CN103952953A (en) * | 2014-05-18 | 2014-07-30 | 中铁十九局集团第二工程有限公司 | Ballastless track construction method for turnout zone of viaduct station |
| CN108004855A (en) * | 2017-12-14 | 2018-05-08 | 沪杭铁路客运专线股份有限公司 | A kind of compression limiting device and method for platy ballastless track structure |
| CN111877061A (en) * | 2020-07-14 | 2020-11-03 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for replacing ballastless track bed hidden structure |
| CN112695577A (en) * | 2020-12-23 | 2021-04-23 | 天津大学 | Repairing method and chiseling device for wide and narrow joints of CRTSII type slab ballastless track |
| CN113529591A (en) * | 2021-07-28 | 2021-10-22 | 四川西南交大铁路发展股份有限公司 | Device, system and method for breaking two sides of post-cast strip of ballastless track base plate |
-
2022
- 2022-03-15 CN CN202210254324.2A patent/CN114575207A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140203094A1 (en) * | 2011-08-31 | 2014-07-24 | Railway Engineering Research Institute of China Academy of Railway Sciences | Ballastless track system |
| CN203295906U (en) * | 2013-06-08 | 2013-11-20 | 中国水利水电第十三工程局有限公司 | Novel buckling and pressing device of track board |
| CN103590288A (en) * | 2013-11-25 | 2014-02-19 | 中铁第四勘察设计院集团有限公司 | Field maintenance method for CRTSII slab-track track boards |
| CN103952953A (en) * | 2014-05-18 | 2014-07-30 | 中铁十九局集团第二工程有限公司 | Ballastless track construction method for turnout zone of viaduct station |
| CN108004855A (en) * | 2017-12-14 | 2018-05-08 | 沪杭铁路客运专线股份有限公司 | A kind of compression limiting device and method for platy ballastless track structure |
| CN111877061A (en) * | 2020-07-14 | 2020-11-03 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Method for replacing ballastless track bed hidden structure |
| CN112695577A (en) * | 2020-12-23 | 2021-04-23 | 天津大学 | Repairing method and chiseling device for wide and narrow joints of CRTSII type slab ballastless track |
| CN113529591A (en) * | 2021-07-28 | 2021-10-22 | 四川西南交大铁路发展股份有限公司 | Device, system and method for breaking two sides of post-cast strip of ballastless track base plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101063289B (en) | City-rail steel spring floating slab rail bed railroad switch construction method | |
| CN108385455A (en) | A kind of board-like Construction of Ballastless Track maintenance activity method of cast-in-place railway roadbed | |
| CN111663385A (en) | Construction method for completing rapid restoration of settlement of integral ballast bed in skylight period | |
| CN111733639A (en) | Method for replacing damaged sleeper of ballastless track | |
| CN109457571B (en) | Construction method for repairing ground deformation joint | |
| CN111576106A (en) | Construction method for rapidly pushing and replacing ballastless track structure of passenger special line | |
| CN117758549A (en) | Construction process of ballastless track of urban railway | |
| CN112695577B (en) | Repairing method and chiseling device for wide and narrow joints of CRTSII type slab ballastless track | |
| CN117248401B (en) | Grouting repair process for slurry-casting mud-bubbling disease of plate-type ballastless track foundation bed | |
| CN114575207A (en) | Method for treating diseases of post-cast strip of ballastless track base plate | |
| CN108385456A (en) | A kind of board-like ballastless track bed board integral replacing method of cast-in-place railway roadbed | |
| KR101014198B1 (en) | Method for mending and reinforcing concrete fabric using hybrid carbon fiber reinforced polymer and polymer mortar | |
| CN111472812A (en) | Construction method for filling and pouring concrete into inverted arch of tunnel | |
| CN110670420A (en) | Underground excavation maintenance method for ballastless track subgrade of operation railway | |
| CN108221715A (en) | A kind of renovation technique of bridge pavement | |
| CN109736152B (en) | Gap repairing structure and repairing method between ballastless track sleeper and track slab | |
| CN111733715A (en) | Construction method for slightly widening adjacent high-speed railway platform | |
| CN105780975A (en) | Control technology of partition board cracks | |
| CN110905565A (en) | Subway station support system for receiving double-line shield in advance and construction method thereof | |
| CN217174968U (en) | Structural crack repairing reinforcement for subway station | |
| CN112901222B (en) | Treatment process for concrete water seepage cracks of inverted arch of tunnel | |
| CN214695730U (en) | Underground hydraulic structure settlement joint structure | |
| CN113279814B (en) | Inverted arch dismantling and replacing construction method for bottom bulging section of high-speed rail tunnel | |
| CN212404666U (en) | Ballastless track turnout open joint treatment structure | |
| CN219410537U (en) | Quick maintenance structure of anti-collision wall of inverted T-shaped bent cap |
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 |