CN116180500A - Method for repairing off-joint slurry discharge of sleeper of concrete filled steel tube sleeper type ballastless track - Google Patents
Method for repairing off-joint slurry discharge of sleeper of concrete filled steel tube sleeper type ballastless track Download PDFInfo
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- CN116180500A CN116180500A CN202211573112.7A CN202211573112A CN116180500A CN 116180500 A CN116180500 A CN 116180500A CN 202211573112 A CN202211573112 A CN 202211573112A CN 116180500 A CN116180500 A CN 116180500A
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- sleeper
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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
- 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
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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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- 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
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses a method for repairing a concrete filled steel tube sleeper ballastless track sleeper by leaving a seam and grouting, which belongs to the technical field of railway tracks and comprises the following steps: detecting ballastless tracks and determining defect sleepers and overhauling areas; anchoring the track bed plate bar planting of the area where the disease sleeper is positioned; removing the concrete of the ballast bed plate in the overhaul area; grouting material into the road bed board pit; removing the fixed fasteners on the disease sleeper and installing temporary supporting fasteners between the steel rail and the embedded sleeve; the temporary support fasteners are removed and the tie is reinstalled with the retaining fasteners on the tie to position the tie. The invention provides a method for repairing the sleeper gap slurry discharge of a concrete filled steel tube sleeper type ballastless track, which can finish the rapid and accurate treatment of the sleeper gap slurry discharge when the sleeper gap slurry discharge defect occurs in a concrete filled steel tube sleeper type ballastless track bed, further solve the problem of incompact between the sleeper and a newly poured track bed, and further radically solve the sleeper gap slurry discharge defect.
Description
Technical Field
The invention belongs to the technical field of railway tracks, and particularly relates to a method for repairing off-line slurry discharge of a sleeper of a steel tube concrete sleeper type ballastless track.
Background
The concrete filled steel tube sleeper type ballastless track generally has less maintenance workload, but is exposed to the atmosphere for years, and is subjected to long-term effects of environmental factors such as air temperature, rainwater and the like, so that the defects of slurry leakage, even block dropping and the like of a gap between a sleeper and a track bed are easily caused under the action of dynamic load of a circulating train. The repeated slurry of the sleeper causes continuous precipitation of fine particles between contact surfaces of the sleeper and the ballast bed, and the formation of empty cranes between the sleeper and the ballast bed causes serious bad rail surface states, so that the line maintenance work is increased, the driving safety can be endangered when serious, and the line operation comfort and safety are influenced significantly.
The on-site investigation condition is synthesized, and the disease cause is analyzed as follows: 1. the steel pipe concrete sleeper type ballastless track is characterized in that after a precast sleeper is positioned, cast-in-place concrete forms an integral track bed around the sleeper, so that bonding between the sleeper and the newly cast concrete mainly depends on Van der Waals force and mechanical biting force maintenance, newly cast track bed slab concrete is accompanied with volume shrinkage in the hardening process, and because of the restraining effect of sleeper concrete blocks on the sleeper concrete, tensile stress is formed in the track bed slab, the sleeper blocks are easy to loosen due to easy cracking of bonding surfaces of the new and old concrete, gaps are formed, and rainwater permeates between the double-block sleeper and the track bed slab concrete through the gaps. 2. The vibration frequencies of the concrete filled steel tube sleeper and the ballast bed plate are inconsistent, and the concrete filled steel tube sleeper and the ballast bed plate have a flapping phenomenon under the action of train load. The interlayer free water generates higher instantaneous water pressure, and the fine particles on the contact surface of the track bed board and the sleeper are taken out while the rainwater is extruded at high speed, so that the periphery of the double-block sleeper generates a gap to form slurry. 3. The existence of the gap enlarges the impact action of the train, and further damages the concrete of the bed board of the double-block sleeper Zhou Biandao to form a falling block. Repeatedly, the disease is continuously serious.
At present, a method for adjusting rail surface irregularity caused by the gap empty hanging of a sleeper of a concrete filled steel tube ballastless track generally comprises the steps of adjusting a fastener, so that the rail surface elevation is adjusted, and the smoothness requirement is met, but the fastener has limited adjusting capability, if the grouting disease is not solved from a root, the rail empty hanging becomes more serious under the action of repeated train load, and the adjustment range of the fastener is exceeded; if the relevant concrete material is adopted to fill and densify the gaps, the contact between the concrete material and the steel pipe belongs to two interfaces, the wrapping property of post-cast concrete on the steel pipe is poor, in addition, the fluidity of the concrete material is poor, the limitation of vibration construction is difficult to fill in the fine gaps, and therefore, the filling is possibly not dense after the concrete material is adopted. In addition, as the maintenance skylight period of the concrete filled steel tube sleeper type ballastless track is generally shorter, the workload of treating sleeper gap slurry discharge is generally larger, and the sleeper gap slurry discharge is difficult to finish in one construction skylight period, so that the normal passing of a train is influenced.
Disclosure of Invention
Aiming at one or more of the defects or improvement demands in the prior art, the invention provides a method for repairing the off-slit slurry discharge of a sleeper of a concrete filled steel tube sleeper type ballastless track, which can finish the rapid and accurate treatment of the off-slit slurry discharge of the sleeper when the sleeper of the concrete filled steel tube sleeper type ballastless track has the defect of off-slit slurry discharge, thereby solving the problem of incompact between the sleeper and a newly poured track bed and further fundamentally solving the problem of off-slit slurry discharge of the sleeper; and the traffic safety is ensured while the traffic is not influenced in the time period except the overhaul skylight period, and more complex transitional measures are not needed.
In order to achieve the purpose, the invention provides a method for repairing the off-joint slurry discharge of a sleeper of a steel pipe concrete sleeper type ballastless track, which is used for repairing the sleeper of the steel pipe concrete sleeper type ballastless track with off-joint slurry discharge diseases, and comprises the following steps:
s1, detecting the ballastless track, and determining a defect sleeper and a maintenance area where the crack slurry-discharge defect occurs;
s2, anchoring the track bed plate bar planting of the area where the disease sleeper is located, and arranging embedded sleeves in the surrounding area of the disease sleeper;
s3, removing the track bed slab concrete in the overhaul area;
s4, grouting a grouting material into the track bed board pit;
the grouting material comprises a group A and a group B, wherein the group A comprises polyphenyl polymethylene polyisocyanate, polyether polyol, a mixed diluent and a polyurethane water scavenger; group B comprises polyether polyol, polymer polyol, mixed diluent, accelerator and coupling agent;
s5, removing the fixing fasteners on the disease sleeper, and installing temporary supporting fasteners between the steel rail and the embedded sleeve;
s6, detecting whether the curing strength of the grouting material meets the design requirement; if yes, entering a step S8; if not, entering step S7;
s7, maintaining the temporary support fastener until the next skylight overhauling period, and entering a step S6;
s8, removing the temporary support fasteners and reinstalling the fixing fasteners on the disease sleeper so as to position the sleeper.
As a further preferred aspect of the present invention, the group a comprises 40 parts of polyphenyl polymethylene polyisocyanate, 8 parts of polyether polyol, 51.5 parts of mixed diluent, and 0.5 part of polyurethane water scavenger; the group B comprises 43 parts of polyether polyol, 14.9 parts of polymer polyol, 25 parts of mixed diluent, 0.1 part of accelerator and 3 parts of coupling agent.
As a further preferred aspect of the present invention, the steps S1 and S2 are completed in the same sunroof; the S3, the S4 and the S5 are completed in the same overhaul skylight period; the step S8 is completed in the same maintenance skylight period.
In a further preferred aspect of the present invention, in S2, the reinforcement anchors are embedded in the road bed board and the base by using pins, and are fixed by using an anti-cracking anchoring adhesive.
As a further preferred aspect of the present invention, the disposing of the pre-buried sleeve in the surrounding area of the defect sleeper in S2 includes the steps of:
s21, embedding sleeve mounting positions at the marks of the areas around the disease sleeper;
s22, polishing the ballast bed plates around the embedded sleeve by adopting an angle grinder to be smooth;
s23, drilling a mounting hole at the marking position of the road bed board;
s24, filling the mounting holes with the bar planting glue, and then mounting the embedded sleeve.
As a further preferred aspect of the present invention, the removing ballast bed slab concrete in the overhaul region in S3 includes the steps of:
s31, marking corresponding positions of steel pipes on the road bed board in the overhaul region;
s32, removing the ballast bed concrete far from the position of the steel pipe by adopting an air pick or an electric pick;
s33, removing the ballast bed concrete close to the steel pipe on the premise of not damaging the steel pipe.
In a further preferred aspect of the present invention, in S33, the ballast concrete near the steel pipe is removed by high-pressure water jet.
As a further preferred aspect of the present invention, in S4, the grouting material is poured to a level with the existing track bed surface.
As a further preferable aspect of the invention, in S8, a rail lifter is used to lift the rail for removing the temporary support fastener.
As a further preferred aspect of the present invention, the temporary support fastener is a WJ-7 fastener, and the fixing fastener is a WJ-8 type fastener.
The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the beneficial effects compared with the prior art including:
(1) According to the method for repairing the gap and slurry leakage of the sleeper of the steel tube concrete sleeper type ballastless track, the whole stability of the track bed structure around the track bed with the defect is ensured by adopting the mode of anchoring the planted bars of the track bed around the track sleeper with the defect, so that the track bed plate is effectively prevented from generating large-scale structural deformation when the track bed plate concrete cleaning operation is performed, and the safe and reliable guarantee is provided for the stable passing of trains. And through being equipped with the grouting material that accords with the steel pipe structure, guaranteed grouting material and steel pipe structure's bonding strength, also can adopt the high mobility of this grouting material simultaneously, realize the accurate filling to each tiny gap of disease sleeper, and then guarantee to the complete interpolation of the off-line structure of disease sleeper, guaranteed the structural stability of dado board.
(2) According to the method for repairing the gap and the slurry of the sleeper of the steel tube concrete sleeper type ballastless track, the corresponding steps are divided into different overhaul skylight periods, so that stable support of a fixed fastener or a temporary support fastener on a steel rail in each overhaul skylight period is ensured, reasonable division of overhaul workload in each skylight period can be realized, stable passing of a train in an overhaul area and a non-overhaul skylight period can be effectively ensured, influence of overhaul operation on passing of the train is reduced as much as possible, and safe passing of the train is ensured.
(3) The method for repairing the gap and the slurry of the sleeper of the steel tube concrete sleeper type ballastless track has the advantages of simple process, high reliability and wide application, can rapidly and accurately position the overhauling area of the sleeper of the ballastless track with the gap and the slurry, and can obviously improve the connection strength between the curing part of the grouting material and the steel tube and the ballast bed plate respectively by adopting grouting materials which are suitable for the steel tube structure, thereby improving the integrity and the integral strength of the structure of the new and the old track plates and ensuring the stable support of the steel rail. Meanwhile, the temporary support fastener is adopted to stably support the steel rail in the grouting material curing process, so that the impact extrusion of train operation load to the grouting material is avoided, the curing quality of the grouting material is ensured, the accurate control of the crack grouting of the defect sleeper is further ensured, the traffic safety is ensured, the crack grouting repairing process of the steel pipe concrete sleeper type ballastless track sleeper is simplified, and the method has excellent economic benefit and popularization value.
Drawings
FIG. 1 is a flow chart of a method for repairing the off-line slurry discharge of a sleeper of a concrete filled steel tube sleeper type ballastless track;
FIG. 2 is a cross-sectional view of a concrete filled steel tube sleeper ballastless track of the present invention;
FIG. 3 is a cross-sectional view of a steel pipe concrete sleeper type ballastless track bar planting anchor in the invention;
FIG. 4 is a sectional view of the temporary support fastener installation of the sleeper-type ballastless track of the concrete filled steel tube of the invention;
FIG. 5 is a top view of the temporary support fastener for the concrete filled steel tube sleeper type ballastless track.
Like reference numerals denote like technical features throughout the drawings, in particular:
1. a steel rail; 2. WJ-8 type fastener; 3. double-block sleeper; 4. a road bed board; 5. a base; 6. planting tendon glue; 7. a pin; 8. chiseling the interface; 9. disease sleeper; 10. WJ-7 fastener.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Examples:
as shown in fig. 1 to 5, the method for repairing the off-slit slurry of the sleeper of the steel pipe concrete sleeper-type ballastless track in the preferred embodiment of the application can finish the rapid and accurate treatment of the off-slit slurry of the sleeper when the sleeper off-slit slurry defect occurs in the steel pipe concrete sleeper-type ballastless track bed, so as to solve the problem of incompact between the sleeper and a newly poured track bed, and further fundamentally solve the sleeper off-slit slurry defect; and the traffic safety is ensured while the traffic is not influenced in the time period except the overhaul skylight period, and more complex transitional measures are not needed.
Specifically, as shown in fig. 1, the method for repairing the off-line slurry discharge of the sleeper of the concrete filled steel tube sleeper type ballastless track comprises the following steps:
s1, detecting ballastless tracks, and determining a defect sleeper 9 and an overhaul area with a crack slurry-discharge defect;
s2, planting bars on the track bed plate 4 in the area where the disease sleeper 9 is located, and arranging embedded sleeves in the area around the disease sleeper 9;
s3, removing the concrete of the track bed plate 4 in the overhaul area;
s4, grouting materials are adopted to perfuse the 4 pits of the road bed board;
s5, removing the fixing fasteners on the disease sleeper 9, and installing temporary supporting fasteners between the steel rail 1 and the embedded sleeve;
s6, detecting whether the curing strength of the grouting material meets the design requirement; if yes, entering a step S8; if not, entering step S7;
s7, maintaining the temporary support fastener until the next skylight overhauling period, and entering a step S6;
s8, removing the temporary support fasteners, and reinstalling the fixing fasteners on the defect sleeper 9 to position the sleeper.
Preferably, S1, S2 are completed in the same service skylight period; at this time, the steel rail 1 is also fixed on the sleeper by adopting a fixing fastener, and the train can normally pass in the non-overhauling skylight period.
S3, S4 and S5 are completed in the same skylight overhauling period; at the moment, the steel rail 1 is fixedly supported by the temporary support fastener, and the train can normally pass in the non-overhauling skylight period.
The steel rails 1S6 and S8 are completed in the same overhaul skylight period; at the moment, the steel rail 1 is fixedly supported by the fixing fastener, and the defect sleeper 9 is overhauled, so that the train can normally pass in the non-overhauling skylight period. By adopting the division of the overhaul skylight period, the realizability of overhaul targets of each overhaul skylight period can be ensured in the actual construction process, and the work safety of overhaul personnel is ensured while the stable communication of trains in the non-overhaul skylight period is ensured.
Further, in the preferred embodiment of the present application, the reinforcement anchoring in step S2 is mainly used for enhancing the overall deformation resistance of the overhaul area, avoiding deformation of the track bed plate 4 in a larger range during the concrete removal operation of the track bed plate 4, and further effectively ensuring the structural stability of the track bed plate 4. Preferably, the reinforcement planting anchoring adopts a mode of implanting the pins 7 to realize stable connection between the road bed board 4 and the base 5 (an off-line foundation), and after the pins 7 are implanted, an anti-cracking anchoring adhesive is adopted to improve the connection stability between the pins 7 and the road bed board 4 and the base 5 respectively, so that the anchoring performance of the pins 7 is ensured, and the deformation resistance of the road bed board 4 is further ensured. Preferably, the pins 7 are uniformly arranged around the service area to ensure the deformation resistance of the track bed 4.
Further preferably, in the preferred embodiment of the present application, the disposing of the pre-buried sleeve in the area around the defect tie 9 in step S2 includes the steps of:
s21, embedding sleeve installation positions at the marks of the surrounding areas of the disease sleeper 9;
preferably, pre-buried sleeves are correspondingly arranged on two longitudinal sides of the defect sleeper 9 so as to ensure that the temporary support fasteners installed later can effectively realize stable support of the steel rail 1.
S22, polishing the ballast bed plates 4 around the embedded sleeve by adopting an angle grinder;
s23, drilling a mounting hole at the marking position of the ballast bed plate 4;
s24, filling the mounting holes with the bar planting glue 6 and then mounting the embedded sleeve.
Preferably, the mounting hole is filled with the bar planting glue 6, and then the bar planting glue 6 beyond the mounting hole is smoothed;
further preferably, the embedded sleeve is installed into the installation hole, the embedded rib glue 6 outside the installation hole is smoothed out, and then the track bed plate 4 in the embedded sleeve area can be guaranteed to be neat and smooth, and the installation stability of the temporary support fastener is guaranteed.
More specifically, in a preferred embodiment of the present application, the removal of ballast bed concrete in the service area in step S3 includes the steps of:
s31, determining a chiseling interface 8 in the overhauling area, and marking the corresponding position of the steel pipe on the track bed plate 4 of the overhauling area;
s32, removing ballast bed concrete at a position far away from the steel pipe by adopting an air pick or an electric pick;
s33, removing the track bed concrete close to the steel pipe on the premise of not damaging the steel pipe.
Preferably, in order to ensure that the steel pipe structure between the double-block sleeper 3 is not damaged, the overall performance of the ballastless track after maintenance is ensured, the high-pressure water jet is adopted to clean the ballast bed concrete close to the steel pipe in the step S33, and further the steel pipe structure is effectively prevented from being damaged in the process of cleaning the ballast bed concrete.
Further, in the preferred embodiment of the present application, when the grouting material is poured into the pit of the track bed board 4 in the step S4, the pouring height of the grouting material is flush with the surface of the existing track bed board 4, so that the structural integrity of the track bed board 4 after pouring and forming is ensured, and the structural strength of the track bed board 4 is ensured.
Further preferably, in a preferred embodiment of the present application, the grouting material comprises a group a and a group b, wherein the group a comprises polyphenyl polymethylene polyisocyanate, polyether polyol, mixed diluent, polyurethane water scavenger; group B includes polyether polyol, polymer polyol, mixed diluent, accelerator and extender. Preferably, the mixture ratio of the component A is 40 parts of polyphenyl polymethylene polyisocyanate, 8 parts of polyether polyol, 51.5 parts of mixed diluent and 0.5 part of polyurethane water scavenger; the proportion of the group B is 43 parts of polyether polyol, 14.9 parts of polymer polyol, 25 parts of mixed diluent, 0.1 part of accelerator and 3 parts of coupling agent. The grouting material with low viscosity prepared by adopting the proportion has higher strength development performance, also has stronger fluidity, after the track bed plate 4 concrete in the interface 8 is clearly chiseled off, the disease sleeper 9 is fixed on the steel rail 1 through the fixing fastener, the grouting material can quickly and accurately infiltrate into the fine gap, so that the adhesion force of old and new parts is ensured, and the grouting material has stronger binding force when being combined with the steel pipe, so that the tight combination of the grouting material and the steel pipe after the molding is effectively ensured, and the structural stability of the sleeper structure is improved. Preferably, the grouting material has the following technical indexes:
further, in the preferred embodiment of the present application, in step S4, the removal of the fixing fasteners and the installation of the temporary supporting fasteners of the disease sleeper 9 are performed only after the grouting material to be poured has a certain curing strength, so as to ensure the filling comprehensiveness of the grouting material. The removal of the fixing fastener and the installation of the temporary support fastener include:
s41, loosening two spiral spikes fixed on the fixed fastener;
s42, removing all parts of the fixing fastener;
s43, at least one temporary support fastener is installed in the corresponding embedded sleeve;
s44, assembling the temporary support fastener to buckle the steel pipe part, and finishing the track support of the steel rail 1.
The structure of the steel rail 1 is stably supported by the mode of the temporary supporting fastener, so that the grouting material curing time period is avoided, the vehicle load acts on the grouting material through the fixing fastener, the curing comprehensiveness and stability of the grouting material are further guaranteed, and the off-line grouting maintenance quality of the sleeper of the steel pipe concrete sleeper type ballastless track is guaranteed.
Further preferably, in a preferred embodiment of the present application, step S8 includes the steps of:
s81, loosening a T-shaped bolt and a nut fixed on the temporary support fastener;
s82, removing the rest temporary support fastener parts after lifting the steel rail 1 by adopting a rail lifter;
and S83, installing the fixing fastener on the repaired defect sleeper 9, and fixing the steel rail 1 on the repaired defect sleeper 9.
In more detail, in the preferred embodiment of the present application, the temporary support fastener is a WJ-7 fastener 10 and the securing fastener is a WJ-8 type fastener 2.
The method for repairing the gap and the slurry of the sleeper of the steel tube concrete sleeper type ballastless track has the advantages of simple process, high reliability and wide application, can rapidly and accurately position the overhauling area of the sleeper of the ballastless track with the gap and the slurry, and can obviously improve the connection strength between the curing part of the grouting material and the steel tube and the ballast bed plate 4 respectively by adopting grouting materials which are suitable for the steel tube structure, thereby improving the integrity and the integral strength of the structure of the new and old track plates and ensuring the stable support of the steel rail 1. Meanwhile, the temporary support fastener is adopted to stably support the steel rail 1 in the grouting material curing process, so that the impact extrusion of train operation load to the grouting material is avoided, the curing quality of the grouting material is ensured, the accurate control of the crack grouting of the defect sleeper 9 is further ensured, the traffic safety is ensured, the crack grouting repairing process of the steel pipe concrete sleeper ballastless track sleeper is simplified, and the method has excellent economic benefit and popularization value.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A method for repairing the off-joint slurry discharge of a sleeper of a steel tube concrete sleeper type ballastless track is used for repairing the sleeper of the steel tube concrete sleeper type ballastless track with off-joint slurry discharge diseases, and is characterized by comprising the following steps:
s1, detecting the ballastless track, and determining a defect sleeper and a maintenance area where the crack slurry-discharge defect occurs;
s2, anchoring the track bed plate bar planting of the area where the disease sleeper is located, and arranging embedded sleeves in the surrounding area of the disease sleeper;
s3, removing the track bed slab concrete in the overhaul area;
s4, grouting a grouting material into the track bed board pit;
the grouting material comprises a group A and a group B, wherein the group A comprises polyphenyl polymethylene polyisocyanate, polyether polyol, a mixed diluent and a polyurethane water scavenger; group B comprises polyether polyol, polymer polyol, mixed diluent, accelerator and coupling agent;
s5, removing the fixing fasteners on the disease sleeper, and installing temporary supporting fasteners between the steel rail and the embedded sleeve;
s6, detecting whether the curing strength of the grouting material meets the design requirement; if yes, entering a step S8; if not, entering step S7;
s7, maintaining the temporary support fastener until the next skylight overhauling period, and entering a step S6;
s8, removing the temporary support fasteners and reinstalling the fixing fasteners on the disease sleeper so as to position the sleeper.
2. The method for repairing the slip joint of the sleeper of the concrete filled steel tube ballastless track according to claim 1, wherein the first group comprises 40 parts of polyphenyl polymethylene polyisocyanate, 8 parts of polyether polyol, 51.5 parts of mixed diluent and 0.5 part of polyurethane water scavenger; the group B comprises 43 parts of polyether polyol, 14.9 parts of polymer polyol, 25 parts of mixed diluent, 0.1 part of accelerator and 3 parts of coupling agent.
3. The method for repairing the concrete filled steel tube sleeper gap and grouting of the ballastless track sleeper, according to claim 1, wherein the S1 and the S2 are completed in the same overhaul skylight period; the S3, the S4 and the S5 are completed in the same overhaul skylight period; the step S8 is completed in the same maintenance skylight period.
4. A method for repairing a concrete filled steel tube sleeper ballastless track sleeper gap grouting as claimed in any one of claims 1 to 3, wherein in S2, the bar planting anchoring is embedded in the track bed plate and the base by adopting pins and is fixed by adopting an anti-cracking anchoring adhesive.
5. A method for repairing a concrete filled steel tube sleeper gap and slurry discharge according to any one of claims 1 to 3, wherein the step of arranging the embedded sleeve in the surrounding area of the defective sleeper in the step S2 comprises the following steps:
s21, embedding sleeve mounting positions at the marks of the areas around the disease sleeper;
s22, polishing the ballast bed plates around the embedded sleeve by adopting an angle grinder to be smooth;
s23, drilling a mounting hole at the marking position of the road bed board;
s24, filling the mounting holes with the bar planting glue, and then mounting the embedded sleeve.
6. A method for repairing a ballast-less sleeper gap as described in any one of claims 1 to 3, wherein the step of removing the ballast slab concrete in the service area in S3 comprises the steps of:
s31, marking corresponding positions of steel pipes on the road bed board in the overhaul region;
s32, removing the ballast bed concrete far from the position of the steel pipe by adopting an air pick or an electric pick;
s33, removing the ballast bed concrete close to the steel pipe on the premise of not damaging the steel pipe.
7. A method of renovating a concrete filled steel tube sleeper ballastless track sleeper void as set forth in claim 6, wherein in said S33, high pressure water jets are used to clean said ballast concrete adjacent said steel tube.
8. A method of repairing a concrete filled steel tube sleeper ballastless track sleeper gap slurry as defined in any one of claims 1 to 3 wherein in S4 the grouting material is poured to a level with the existing ballast bed surface.
9. A method of repairing a concrete filled steel tube sleeper ballastless track sleeper gap slurry as defined in any one of claims 1 to 3 wherein in S8, a rail lifter is used to lift the rail for removal of the temporary support fastener.
10. A method of repairing a concrete filled steel tube sleeper gap grouting as claimed in any one of claims 1 to 3 wherein the temporary support fastener is a WJ-7 fastener and the fixing fastener is a WJ-8 fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211573112.7A CN116180500A (en) | 2022-12-08 | 2022-12-08 | Method for repairing off-joint slurry discharge of sleeper of concrete filled steel tube sleeper type ballastless track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211573112.7A CN116180500A (en) | 2022-12-08 | 2022-12-08 | Method for repairing off-joint slurry discharge of sleeper of concrete filled steel tube sleeper type ballastless track |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116180500A true CN116180500A (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211573112.7A Pending CN116180500A (en) | 2022-12-08 | 2022-12-08 | Method for repairing off-joint slurry discharge of sleeper of concrete filled steel tube sleeper type ballastless track |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116180500A (en) |
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- 2022-12-08 CN CN202211573112.7A patent/CN116180500A/en active Pending
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