CN113338092A - Method for repairing damage of ballastless track filling layer - Google Patents
Method for repairing damage of ballastless track filling layer Download PDFInfo
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- CN113338092A CN113338092A CN202110687595.2A CN202110687595A CN113338092A CN 113338092 A CN113338092 A CN 113338092A CN 202110687595 A CN202110687595 A CN 202110687595A CN 113338092 A CN113338092 A CN 113338092A
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- track
- filling
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- pouring
- repairing
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a method for repairing damage of a ballastless track filling layer, which comprises the following steps: s1, construction preparation: s2, adjusting the position of the track slab; s3, lifting the track slab; s4, removing the damaged filling layer mortar; s5, installing a mortar filling bag: fixing the perfusion bag on the concrete base in an adhesion manner; s6, positioning and fine adjustment of the track slab; the position of the track plate is adjusted by adjusting the fine adjustment claw, the track plate is ensured to be arranged at the target height position, and the position of the track plate is fixed by a pressing mechanism; s7, stirring and grouting the quick-hardening polymer cement mortar; s8, filling boss resin between the convex blocking platform and the track slab; and S9, ending construction. The method carries out detailed design on the damage repairing operation of the ballastless track filling layer, and has the advantages of high repairing efficiency, better repairing quality and stronger practicability.
Description
Technical Field
The invention belongs to the technical field of track filling layer repair, and particularly relates to a method for repairing damage of a ballastless track filling layer.
Background
After the ballastless track is opened for operation, diseases such as integral track bed cracks, failure of a CA mortar cushion layer, floating of double-block sleepers and slurry seepage between a concrete base and a roadbed gradually appear, along with the increase of the number of trains, particularly the increase of the diseases caused by the start of trucks and the acceleration of the spreading speed, larger potential safety hazards exist, and the defects of the double-block track slab cracks and the floating of the double-block sleepers are rectified in 2011 and 2012 by a road bureau for ensuring the safe and stable operation of the trains (particularly motor train units). However, the CA mortar cushion diseases are not treated all the time due to high requirements on construction technology, high construction difficulty and large interference on transportation, and a method special for repairing the damage of the ballastless track filling layer is designed in order to ensure the repairing efficiency and the repaired quality of the ballastless track filling layer.
Disclosure of Invention
The invention aims to provide a method for repairing the damage of a ballastless track filling layer, which is put into use and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for repairing damage of a ballastless track filling layer comprises the following steps:
s1, construction preparation:
A. embedding an anchor rod of a fastening device on a concrete base of a corresponding track slab at a part to be repaired;
B. embedding a mark nail on the boss, measuring CP III fine adjustment data of the track slab by using a TRIMBLES8 total station, and making data adjustment;
s2, adjusting the position of the track slab:
A. loosening fasteners on the track plates on two sides of the target track plate;
B. fixedly mounting the bottom of the fine adjustment claw on a concrete base of the track slab, and fixedly connecting an adjusting movable end of the fine adjustment claw with the track slab;
s3, lifting the track slab:
A. chiseling boss resin between the track slab and the concrete base;
B. putting a jack, and uniformly lifting the track slab at four corners;
s4, removing damaged filling layer mortar: rapidly chiseling the damaged mortar layer from the side through a tool;
s5, installing a mortar filling bag: fixing the perfusion bag on the concrete base in an adhesion manner;
s6, positioning and fine adjustment of the track slab; the position of the track plate is adjusted by adjusting the fine adjustment claw, the track plate is ensured to be arranged at the target height position, and the position of the track plate is fixed by a pressing mechanism;
s7, stirring and grouting of quick-hardening polymer cement mortar:
A. calculating and weighing the dosage of the rapid hardening polymer cement mortar required by the pouring, and stirring the mortar by adopting a special polymer cement mortar stirrer;
B. pouring mortar into the pouring bag preset in the step S5 until the pouring bag is full;
s8, filling boss resin between the convex blocking platform and the track slab;
s9, construction ending:
A. removing the protection and cutting off the residual edges of the redundant filling bag, and checking and accepting;
B. and (5) checking the curing condition of the polymer cement mortar 1 hour after grouting, and removing the fine adjustment claw and the pressing device of the target track slab if the curing condition is met.
Preferably, the embedding the anchor rod in the step S1 includes the following steps:
a. drilling 4 pre-buried holes on the base plate by using a drill bit of 20mm, wherein the pre-buried holes are positioned at the position of the hoisting casing pipe and the drilling depth is 18 cm;
b. after the drilling is finished, cleaning dust in the hole by using a brush and an air cylinder;
c. and (3) pouring the bar planting glue to 1/2 degrees of the depth of the hole, then inserting an anchor rod into the hole, wherein the top of the anchor rod is 10cm higher than the top surface of the track plate and at least 5cm lower than the top surface of the track plate.
Preferably, in step S5, when laying the filling bag, the filling bag is adhered to the concrete base by lightly brushing adhesive on the periphery of the concrete base.
Preferably, the compressing mechanism comprises an anchor rod vertically fixed on the concrete base relatively, an L-shaped steel frame arranged on the anchor rod in a sliding mode, a stop gasket arranged on the anchor rod in a threaded connection mode, and a wing nut in threaded connection with the anchor rod, the track plate is pressed between the anchor rod gasket and the L-shaped steel frame, and the wing nut is pressed on the surface of the L-shaped steel frame.
Preferably, the quick hardening polymer cement mortar in the step S7 is subjected to the workability test immediately after the mixing.
Preferably, the step of infusing the boss resin in the step of S8 includes the following steps;
a. after the rapid hardening polymer cement mortar is poured, cleaning the pouring part of the convex baffle table to ensure the drying of the pouring part, measuring the spacing gap between the convex baffle table and the track slab, wherein the spacing gap is not less than 30mm, and pouring can be carried out;
b. checking and placing resin infusion bags around the convex blocking platform, enabling the infusion bags to be flatly adhered to the track plate and the convex blocking platform, and installing foam side blocks and protective pads;
c. preparing filling resin;
d. c, filling the resin in the step c into a resin filling bag, wherein the filling height is equal to the rail plate, and performing resin bubble removal treatment and overflowing and leaking resin wiping treatment after filling;
e. one day after perfusion, the perfusion quality was checked.
Preferably, the components are required to be stirred for 3min respectively when the filling resin is prepared, and the filling resin must be finished by one-time pouring.
Preferably, during the resin bubble removing treatment, a tool such as a wood bar is used to penetrate into the resin, and the resin is rubbed for a plurality of times by being close to the side surface of the track plate or the convex baffle table, so that the filling bag is prevented from generating fold distortion and air retention, and the blade lightly scrapes surface bubbles.
Preferably, when the filling resin meets the bad weather, waterproof measures such as plastic covering and tarpaulin are needed to cover the filling position.
Preferably, when the track is ultrahigh, the resin cannot be poured in place at one time, and needs to be poured for the second time, which comprises the following steps;
a. when the ultrahigh inclination is large, the liquid level height is checked at any time, whether multiple times of pouring can be carried out is judged, and secondary pouring is required to be guaranteed to be carried out after primary pouring is finished and before resin is not solidified;
b. when it is necessary to perform the secondary filling after the resin is hardened, it is possible to use a screw insertion or a roughening of the surface of the resin which is filled for the first time before the filling.
The invention has the technical effects and advantages that: the method for repairing the damage of the ballastless track filling layer,
1. the method has stronger applicability to damage repair of the ballastless track filling layer, careful operation, better quality after repair and higher repair efficiency.
2. The operation method for the adaptability to various special conditions is increased, such as the operation method under the conditions that the track is ultrahigh, the resin is filled with air bubbles and the secondary filling is necessary, the stability of the product quality under various conditions is ensured, and the practicability is higher.
Drawings
FIG. 1 is a construction flow chart of the present invention;
FIG. 2 is a flow chart of the process of pouring the rapid hardening polymer cement mortar in the step S7;
FIG. 3 is a flow chart of the boss resin infusion at step S8;
fig. 4 is a schematic structural view of the pressing mechanism.
In the figure: 1. a concrete base; 2. a hold-down mechanism; 210. an anchor rod; 220. an L-shaped steel frame; 230. a stopper spacer; 240. wing nuts; 3. a track plate.
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.
The invention provides a method for repairing damage of a ballastless track filling layer, which comprises the following steps of:
s1, construction preparation:
A. drilling 4 pre-buried holes on the base plate by using a drill bit of 20mm, wherein the pre-buried holes are positioned at the position of the hoisting casing pipe and the drilling depth is 18 cm; b. after the drilling is finished, cleaning dust in the hole by using a brush and an air cylinder; pouring the bar planting glue to 1/2 degrees of the depth of the hole, then inserting an anchor rod into the hole, wherein the top of the anchor rod is 10cm higher than the top surface of the track plate and at least 5cm lower than the top surface of the track plate;
B. embedding mark nails on the boss, and directly adopting the original GRP mark nails if the boss is provided with the original GRP mark nails; if not, punching, injecting glue and embedding. The measuring group adopts a TRIMBLES8 total station to measure and set the data of the track slab, and performs adjustment and arrangement on the data to prepare for subsequent fine adjustment of the track slab;
s2, adjusting the position of the track slab: measuring the field temperature, and when the temperature is basically consistent with the temperature of the locking fastener, performing the following operations;
A. loosening fasteners on the track plates on two sides of the target track plate;
B. fixedly mounting the bottom of the fine adjustment claw on a concrete base of the track slab, and fixedly connecting an adjusting movable end of the fine adjustment claw with the track slab; the position of the track plate is adjusted through a transverse driving knob and a longitudinal driving knob which are precisely adjusted and grabbed;
s3, lifting the track slab:
A. chiseling boss resin between the track slab and the concrete base;
B. putting a jack, and uniformly lifting the track slab at four corners;
s4, removing damaged filling layer mortar: rapidly chiseling the damaged mortar layer from the side through a tool; and tools such as an electric pick, an air pick and the like are adopted to rapidly chisel the damaged mortar layer from the side surface. Cleaning the concrete base by adopting high-pressure air, a broom and the like;
s5, installing a mortar filling bag: fixing the perfusion bag on the concrete base in an adhesion manner;
s6, positioning and fine adjustment of the track slab; the position of the track plate is adjusted through the adjusting fine adjustment claw, the track plate is guaranteed to be arranged at a target height position, the position of the track plate is fixed through the pressing mechanism, the track plate is prevented from floating upwards when mortar is poured, and the pressing mechanism is detached after the mortar is poured and hardened;
s7, stirring and grouting of quick-hardening polymer cement mortar:
A. calculating and weighing the dosage of the rapid hardening polymer cement mortar required by the pouring, and stirring the mortar by adopting a special polymer cement mortar stirrer;
B. pouring mortar into the pouring bags preset in the step S5 until the pouring bags are full, and binding pouring bag openings after pouring is finished;
s8, filling boss resin between the convex blocking platform and the track slab;
s9, construction ending:
A. removing the protection and cutting off the residual edges of the redundant filling bag, and checking and accepting;
B. and (5) checking the curing condition of the polymer cement mortar 1 hour after grouting, and removing the fine adjustment claw and the pressing device of the target track slab if the curing condition is met.
And S5, when the filling bag is laid, lightly brushing adhesive glue on the periphery of the concrete base, and adhering the filling bag to the concrete base. Prevent the filling bag from being uneven to cause the incomplete filling, and enhance the stability of the filling quality.
As shown in fig. 4, the pressing mechanism 2 includes an anchor rod 210 relatively vertically fixedly disposed on the concrete foundation 1, an L-shaped steel frame 220 slidably disposed on the anchor rod 210, a stop washer 230 threadedly coupled to the anchor rod 210, and a wing nut 240 threadedly coupled to the anchor rod 210, the track plate 3 is pressed between the anchor rod 210 washer and the L-shaped steel frame 220, and the wing nut 240 is pressed on the surface of the L-shaped steel frame 220. Accurate fixing is carried out to the relative position between track board 3 and the concrete base 1 through setting up hold-down mechanism 2, avoids taking place the circumstances such as come-up or heeling at the grout in-process, guarantees the stability of processing.
And the quick-hardening polymer cement mortar in the step S7 is quickly subjected to working performance detection after being stirred. The quality of the mortar for filling is guaranteed to be qualified, and the repair quality is guaranteed.
The step of pouring the boss resin in the step of S8 comprises the following steps;
a. after the rapid hardening polymer cement mortar is poured, cleaning the pouring part of the convex baffle table to ensure the drying of the pouring part, measuring the spacing gap between the convex baffle table and the track slab, wherein the spacing gap is not less than 30mm, and pouring can be carried out;
b. checking and placing resin infusion bags around the convex blocking platform, enabling the infusion bags to be flatly adhered to the track plate and the convex blocking platform, and installing foam side blocks and protective pads;
c. preparing filling resin;
d. c, filling the resin in the step c into a resin filling bag, wherein the filling height is equal to the rail plate, and performing resin bubble removal treatment and overflowing and leaking resin wiping treatment after filling;
e. one day after perfusion, the perfusion quality was checked.
The components are required to be respectively stirred for 3min when the filling resin is prepared, and the filling resin is required to be filled at one time.
The use instrument such as stick is deepened inside the resin during resin debubbling is handled, presses close to track board or convex fender platform side friction many times, prevents to fill the bag and produce fold distortion and air entrapment to the blade scrapes the surface bubble gently. Will slowly, inject into in succession during pouring into, fill highly should with the track board parallel and level, fill the back that finishes, use tools such as wooden stick to go deep into inside the resin, press close to track board or convex fender platform side friction several times down, prevent to fill the bag and produce fold distortion and air detention to scrape through the surface bubble gently with the blade. And after the pouring is finished, immediately erasing the resin overflowing and leaking during pouring, checking the height and the apparent mass of the pouring liquid level, and pouring a detection sample. During the resin material injecting process, the overflowed and leaked resin is immediately erased without residual dirt.
When the filling resin meets severe weather, waterproof measures such as plastic covering and tarpaulin are needed to be carried out on the filling position. Since the resin cannot obtain a predetermined cured product performance when water is mixed in during the kneading operation, the operation can be performed only after the water is removed from the container or the machine used therefor. After the construction is finished, if severe weather is met, protection measures are taken for the resin part, and rainwater or large impurities are prevented from falling into the resin.
When the track is ultrahigh, the resin cannot be poured in place for the first time, and needs to be poured for the second time, which comprises the following steps;
a. when the ultrahigh inclination is large, the liquid level height is checked at any time, whether multiple times of pouring can be carried out is judged, and secondary pouring is required to be guaranteed to be carried out after primary pouring is finished and before resin is not solidified;
b. when it is necessary to perform the secondary filling after the resin is hardened, it is possible to use a screw insertion or a roughening of the surface of the resin which is filled for the first time before the filling. When the secondary pouring is carried out, the connection strength can be increased by adopting a method of inserting screws (with the length of 40mm) before pouring, the screws are preferably uniformly arranged at intervals of 10cm, the inserting depth of the screws is controlled to be more than 25mm, or the adhesive force is increased by adopting a method of roughening the surface of the resin.
Claims (10)
1. A method for repairing damage of a ballastless track filling layer is characterized by comprising the following steps: the method comprises the following steps:
s1, construction preparation:
A. embedding an anchor rod of a fastening device on a concrete base of a corresponding track slab at a part to be repaired;
B. embedding a mark nail on the boss, measuring CP III fine adjustment data of the track slab by using a TRIMBLES8 total station, and making data adjustment;
s2, adjusting the position of the track slab:
A. loosening fasteners on the track plates on two sides of the target track plate;
B. fixedly mounting the bottom of the fine adjustment claw on a concrete base of the track slab, and fixedly connecting an adjusting movable end of the fine adjustment claw with the track slab;
s3, lifting the track slab:
A. chiseling boss resin between the track slab and the concrete base;
B. putting a jack, and uniformly lifting the track slab at four corners;
s4, removing damaged filling layer mortar: rapidly chiseling the damaged mortar layer from the side through a tool;
s5, installing a mortar filling bag: fixing the perfusion bag on the concrete base in an adhesion manner;
s6, positioning and fine adjustment of the track slab; the position of the track plate is adjusted by adjusting the fine adjustment claw, the track plate is ensured to be arranged at the target height position, and the position of the track plate is fixed by a pressing mechanism;
s7, stirring and grouting of quick-hardening polymer cement mortar:
A. calculating and weighing the dosage of the rapid hardening polymer cement mortar required by the pouring, and stirring the mortar by adopting a special polymer cement mortar stirrer;
B. pouring mortar into the pouring bag preset in the step S5 until the pouring bag is full;
s8, filling boss resin between the convex blocking platform and the track slab;
s9, construction ending:
A. removing the protection and cutting off the residual edges of the redundant filling bag, and checking and accepting;
B. and (5) checking the curing condition of the polymer cement mortar 1 hour after grouting, and removing the fine adjustment claw and the pressing device of the target track slab if the curing condition is met.
2. The method for repairing the damage of the ballastless track filling layer according to claim 1, wherein the method comprises the following steps: the step of pre-embedding the anchor rod in the step of S1 comprises the following steps:
a. drilling 4 pre-buried holes on the base plate by using a drill bit of 20mm, wherein the pre-buried holes are positioned at the position of the hoisting casing pipe and the drilling depth is 18 cm;
b. after the drilling is finished, cleaning dust in the hole by using a brush and an air cylinder;
c. and (3) pouring the bar planting glue to 1/2 degrees of the depth of the hole, then inserting an anchor rod into the hole, wherein the top of the anchor rod is 10cm higher than the top surface of the track plate and at least 5cm lower than the top surface of the track plate.
3. The method for repairing the damage of the ballastless track filling layer according to claim 1, wherein the method comprises the following steps: and S5, when the filling bag is laid, lightly brushing adhesive glue on the periphery of the concrete base, and adhering the filling bag to the concrete base.
4. The method for repairing the damage of the ballastless track filling layer according to claim 1, wherein the method comprises the following steps: the pressing mechanism (2) comprises an anchor rod (210) which is vertically and fixedly arranged on the concrete base (1) relatively, an L-shaped steel frame (220) which is arranged on the anchor rod (210) in a sliding mode, a stop gasket (230) which is arranged on the anchor rod (210) in a threaded connection mode, and a wing nut (240) which is in threaded connection with the anchor rod (210), the track plate (3) is pressed between the anchor rod (210) gasket and the L-shaped steel frame (220), and the wing nut (240) is pressed on the surface of the L-shaped steel frame (220).
5. The method for repairing the damage of the ballastless track filling layer according to claim 3, wherein the method comprises the following steps: and the quick-hardening polymer cement mortar in the step S7 is quickly subjected to working performance detection after being stirred.
6. The method for repairing the damage of the ballastless track filling layer according to claim 1, wherein the method comprises the following steps: the step of pouring the boss resin in the step of S8 comprises the following steps;
a. after the rapid hardening polymer cement mortar is poured, cleaning the pouring part of the convex baffle table to ensure the drying of the pouring part, measuring the spacing gap between the convex baffle table and the track slab, wherein the spacing gap is not less than 30mm, and pouring can be carried out;
b. checking and placing resin infusion bags around the convex blocking platform, enabling the infusion bags to be flatly adhered to the track plate and the convex blocking platform, and installing foam side blocks and protective pads;
c. preparing filling resin;
d. c, filling the resin in the step c into a resin filling bag, wherein the filling height is equal to the rail plate, and performing resin bubble removal treatment and overflowing and leaking resin wiping treatment after filling;
e. one day after perfusion, the perfusion quality was checked.
7. The method for repairing the damage of the ballastless track filling layer according to claim 6, wherein the method comprises the following steps: the components are required to be respectively stirred for 3min when the filling resin is prepared, and the filling resin is required to be filled at one time.
8. The method for repairing the damage of the ballastless track filling layer according to claim 6, wherein the method comprises the following steps: the use instrument such as stick is deepened inside the resin during resin debubbling is handled, presses close to track board or convex fender platform side friction many times, prevents to fill the bag and produce fold distortion and air entrapment to the blade scrapes the surface bubble gently.
9. The method for repairing the damage of the ballastless track filling layer according to claim 6, wherein the method comprises the following steps: when the filling resin meets severe weather, waterproof measures such as plastic covering and tarpaulin are needed to be carried out on the filling position.
10. The method for repairing the damage of the ballastless track filling layer according to claim 6, wherein the method comprises the following steps: when the track is ultrahigh, the resin cannot be poured in place for the first time, and needs to be poured for the second time, which comprises the following steps;
a. when the ultrahigh inclination is large, the liquid level height is checked at any time, whether multiple times of pouring can be carried out is judged, and secondary pouring is required to be guaranteed to be carried out after primary pouring is finished and before resin is not solidified;
b. when it is necessary to perform the secondary filling after the resin is hardened, it is possible to use a screw insertion or a roughening of the surface of the resin which is filled for the first time before the filling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110687595.2A CN113338092A (en) | 2021-06-21 | 2021-06-21 | Method for repairing damage of ballastless track filling layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110687595.2A CN113338092A (en) | 2021-06-21 | 2021-06-21 | Method for repairing damage of ballastless track filling layer |
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2021
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Application publication date: 20210903 |