KR101011502B1 - Speedy Recovering Method for Concrete Track - Google Patents

Abstract

The present invention relates to a method for rapidly restoring the settlement amount of a new type of concrete track that can be quickly recovered by using a filler when the concrete track is submerged due to subsidence of the subgrade in a concrete track installed on a soil subgrade. .

In the present invention, the HSB layer 20 made of concrete formed on the subgrade layer 10 made of soil, and the TCL layer 30 made of concrete formed on the HSB layer 20 to support the sleepers 40 and the rails. As a method for rapidly restoring the settled amount of the concrete track consisting of the sleepers 40 installed on the TCL layer 30, a through hole 2 is formed to penetrate the TCL layer 30 and the HSB layer 20, and the injection tube is formed. Inserting into the through hole (2); Injecting a quick filling filler (3) between the subgrade layer (10) and the HSB layer (20) through the injection pipe to raise the concrete track including the HSB layer (20) by a recovery amount; Injecting a secondary filler 4 made of a flowable material into a space formed between the subgrade layer 10 and the HSB layer 20 through an injection tube; And by filling the through-hole (2), there is provided a method for rapid recovery of the settled amount of concrete tracks, characterized in that to increase the concrete track by a recovery amount corresponding to the amount of settlement of the roadbed to return from the settled state.

Recovery, settlement, track, roadbed, concrete track, rapid recovery

Description

Speedy Recovering Method for Concrete Track

The present invention relates to a method for rapidly restoring the settlement of a concrete track, specifically, in a concrete track installed on a soil subgrade of a earthworks section, when the concrete track subsides due to subsidence of the subgrade, it can be quickly restored by using a filler. The present invention relates to a method for rapid recovery of settlement of a new type of concrete track.

In laying railroad tracks, it is common to use concrete tracks in the rigid roadbed section. However, the section through which the rail line passes may include soft ground, and it was difficult to use concrete tracks on such soft ground. This is because soft ground is likely to cause subgrade subsidence, and when subgrade subsidence occurs, orbital misalignment occurs. The same situation applies to not only soft ground but also general soil and sand.

However, when laying tracks such as high-speed railway, distortion of tracks becomes a big problem, and in the case of general gravel road tracks using gravel, problems such as gravel scattering during the passage of trains have emerged. The way to use is being considered. One of the most important points in using concrete tracks in subgrade soils is to keep the subsidence within a predetermined reference value to ensure the running stability of the train vehicle and the structural stability of the tracks. Minimize.

Unlike conventional gravel tracks, the concrete track has a large decrease in the usability of the track when settling occurs, but the methods to cope with it are very limited. If settlement occurs on the track due to settlement of the roadbed, the concrete slab is raised by using a hydraulic jack, and the space between the concrete slab and the roadbed is filled with a filling material or a reinforcement is injected directly into the roadbed where the settlement has occurred. It is a method that has been conventionally proposed to prevent the occurrence.

However, in the case of using the hydraulic jack to raise the concrete slab, since the working speed is very slow, it significantly affects the running of the train, and there is a limitation that it cannot be applied when the width of the concrete slab is wide. Since the method of injecting the reinforcement into the roadbed is only to prevent additional settlement, there is a limit to returning the settlement, and there is a problem that the construction cost is not only expensive but also the high strength effect is not obvious. Therefore, in order to expand the use of concrete tracks on subgrade soils, there is an urgent need for a method that can solve the above problems.

The present invention has been developed to overcome the above problems and limitations that may occur in the use of concrete tracks proposed as a countermeasure against ground subsidence on soil soils. Specifically, an object of the present invention is to propose a new concrete track rapid recovery method that can quickly and precisely return the settlement amount so as not to interfere with the passage of the train when settlement of the roadbed occurs.

In addition, an object of the present invention is to propose a new concrete track rapid recovery method that can reduce the cost of repairing a concrete track.

It is also an object of the present invention not only to prevent additional settlement, but also to provide a concrete track rapid recovery method capable of restoring an abnormal state of a track by restoring the settlement again.

In the present invention, in order to achieve the above object, while maintaining the track structure and the roadbed structure as it is, the concrete track recovery to the core by injecting the filler at the boundary between the track and the roadbed to quickly raise the track to restore the settlement A method is provided.

Specifically, in order to achieve the above object, in order to achieve the above object, the HSB layer made of concrete formed on the subgrade layer made of earth and sand, the TCL layer made of concrete formed on the HSB layer to support the sleepers and rails, and on the TCL layer Claims [1] A method for rapidly restoring a settled amount of a concrete track made of sleepers, comprising: forming a through hole to penetrate the TCL layer and the HSB layer, and inserting an injection tube into the through hole; Injecting a quick filling filler between the subgrade layer and the HSB layer through the injection tube to increase the concrete trajectory including the HSB layer by a recovery amount; Injecting a secondary filler made of a flowable material into a space formed between the subgrade layer and the HSB layer through an injection tube; And by filling the through-holes, there is provided a method for rapid recovery of the settled amount of concrete tracks, characterized in that to increase the concrete track by the recovery amount corresponding to the amount of settlement of the roadbed to return from the settled state.

In the present invention as described above, the injection tube may be composed of a double tube having a configuration capable of injecting the two materials separately. In addition, the injection tube may be made of a single tube that can inject a single material, respectively, in this case, the through-hole for inserting the rapid injection filler injection tube, and the secondary filler injection tube during the drilling of the through hole Each of the through holes that can be inserted is to be drilled separately.

On the other hand, in the present invention as described above, in the step of raising the concrete track by the recovery amount, by using a level meter to measure the height of the rise of the concrete track, accordingly by adjusting the injection pressure of the quick-filling filler to increase the amount Quickly filling may also be injected until a predetermined amount of recovery has been reached.

In addition, in the present invention as described above, in the step of filling the through-hole, the injection tube may be drawn out and then removed to fill the through-hole by injecting a filler into the through-hole, in the state leaving the injection tube in the step of filling the through-hole The filler may be filled to fill the through hole, and then only the outer protruding portion of the injection tube may be cut.

Since the concrete track rapid recovery method according to the present invention has a simple structure, the settling amount can be restored within a short time, and therefore, such a repair operation does not interfere with the train passage.

In particular, in the rapid recovery method according to the present invention, since the concrete track is raised using the filler while the roadbed is maintained, the settlement is restored, so that damage to the roadbed or the upper concrete track can be minimized, thereby maximizing stability. There is an advantage.

In addition, since the quick-filling filler and the secondary filler used in the fast recovery method according to the present invention are all made of cement-based material, it is easy to fit the life thereof to be equal to or longer than the life of the concrete track.

In particular, when the width of the concrete track is wide, there is an advantage that the rapid recovery method of the present invention can be easily applied through a method such as increasing the number of through holes accordingly.

In addition, since the rapid recovery method of the present invention does not directly inject the chemical liquid whose effect is unclear, it has the advantage of reducing the cost of recovery compared to the prior art, the present invention is to restore the settlement It has the effect of recovering the abnormal state of the orbit normally.

In addition, since the injection pressure is adjusted by using a level meter in the process of restoring the concrete track with the filling pressure of the filling material, the filling pressure can be accurately restored according to the settlement amount.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, this is described as one embodiment, whereby the technical spirit of the present invention and its core configuration and operation are not limited.

In the concrete track rapid recovery method according to an embodiment of the present invention, by filling the filler between the roadbed layer and the roadbed reinforced layer (hereinafter referred to as "HSB layer") to raise the HSB layer by the amount of settlement It is a main feature.

FIG. 1 shows a schematic cross-sectional view from the longitudinal direction of the concrete track, and FIG. 2 shows a schematic plan view of the concrete track.

As shown in the drawing, the concrete track is formed on the HSB layer 20 made of concrete formed on the subgrade layer 10 made of soil, and formed on the HSB layer 20 to support the sleepers 40 and the rails (not shown). Consists of a concrete concrete layer 30 made of concrete (Track Concrete Layer, referred to herein as "TCL layer") and the sleeper 40 installed on the TCL layer 30. On the sleeper 40, a rail on which the train travels is installed. If the subsidence phenomenon occurs in the subgrade layer 10, the height of the sleeper 40 is lower than the normal state. In this case, the concrete track rapid recovery method according to the present invention (hereinafter, abbreviated as "rapid recovery method") is applied, as shown in FIGS. 1 and 2, through-hole (2) and drilling and injection pipe (1) Proceed with the insertion step. That is, the through hole 2 is formed to penetrate the TCL layer 30 and the HSB layer 20, and the injection tube 1 is inserted into the through hole 2. At this time, the through-hole 2 is formed so that the end of the injection tube 1 contacts at least the upper surface of the subgrade layer 10 and inserts the injection tube 1. The through hole 2 is drilled to avoid the reinforcing steel reinforcement in the TCL layer 30 and the HSB layer 20, and the through hole 2 is filled with a filling material such as a non-shrink mortar as described later. Therefore, even though the through hole 2 is drilled, it does not affect the structural function of the TCL layer 30 or the HSB layer 20.

In a state in which the injection tube 1 is inserted, the rapid filling filler 3 is injected through the injection tube 1. The injection tube 1 is not particularly limited, but as described later, the injection tube 1 may be formed of a double tube so that the secondary filler 4 may be additionally injected after the rapid filling filler 3 is injected. Do. That is, it is preferable to use a double tube having a configuration capable of separately injecting two materials as the injection tube 1 as shown in the embodiment shown in the drawing. As such a double tube, a well-known thing can be used. On the other hand, in the case of using a general single tube instead of using a double tube as the injection tube 1, an additional through hole for installing an additional injection tube capable of injecting the secondary filler 4 will be formed in advance as described below. Alternatively, an additional injection tube may be inserted into the additional through hole in advance. That is, when the through hole 2 is drilled, the through hole for inserting the injection tube for the quick filling filler 3 and the through hole for inserting the injection tube for the secondary filler 4 are separately drilled. Each injection hole can be inserted into each through hole.

FIG. 3 is a schematic longitudinal cross-sectional view of a concrete track showing the state in which the quick filling filler 3 is injected between the subgrade layer 10 and the HSB layer 20 through the injection tube 1. As shown in the drawing, when the quick filling filler 3 is injected through the injection tube 1, the quick filling filler 3 discharged from the end of the injection tube 1 is transferred between the subgrade layer 10 and the HSB layer 20. As a result of the injection, a gap is generated between the subgrade layer 10 and the HSB layer 20 due to the injection pressure, and the concrete track including the HSB layer 20 rises. At this time, by using the level measuring device (5) to measure the height of the rise of the concrete track and adjust the injection pressure of the quick filling filler (3) accordingly until the rising amount reaches a predetermined recovery amount (3) Will be injected.

  The amount of recovery is determined in advance through a known method by measuring the amount of settlement of the subgrade layer 10. The quick-filling filler 3 injected between the subgrade layer 10 and the HSB layer 20 can be used by selecting a known one arbitrarily, the property is preferably used in the form of a gel, the gel time is about 3 It is preferable to use a second or so. The quenchable filler 3 is already known, and may be a known one consisting of sodium silicate, cement, water, and a admixture for controlling the curing rate. As an example, the quick-filling filler 3 can be made from the following amounts of each material. However, this is only one example, and each material and its use amount can be changed as necessary.

-Sodium Silicate as liquid type material about 53-about 58 L

-About water 328-about 335 L

-Liquid admixture about 13-about 14 L

About 80 to about 120 kg of cement

-15 kg or less admixture for controlling the curing rate as a powder type material

(Where 1,000L = 1㎥)

When the quick-filling filler 3 is injected between the subgrade layer 10 and the HSB layer 20 as described above, when the concrete track including the HSB layer 20 rises by a desired recovery amount and the settlement is restored, the low pressure fluid material is returned. The secondary filler 4 made is injected again through the injection tube 1 to fill the empty space formed between the subgrade layer 10 and the HSB layer 20 due to the quick filling filler 3. At this time, the secondary filler 4 is pressurized and infiltrated along the boundary between the already hardened quick-filling filler 3 and the injection tube 1 and filled in the empty space. FIG. 4 is a schematic longitudinal cross-sectional view of the concrete track showing the state of filling the subgrade 4 and the HSB layer 20 by injecting the secondary filler 4 in this way. As the secondary filler 4, non-shrinkable mortar having fluidity and the like can be used. If necessary, the secondary filler 4 can be manufactured using the following materials and amounts. However, the following is an example, and various types of flowable materials may be used as the secondary filler 4, and in the following description, the material and the amount of use thereof may be different.

-About 150L of sodium silicate as liquid material

About 850 L of water

About 200 kg of cement as powder material

-About 75 kg or less of admixture as powder material

(Where 1,000L = 1㎥)

If a single pipe is used instead of a double pipe as the injection pipe 1, in the step of drilling the through hole 2 and inserting the injection pipe 1, a separate additional through hole is formed, and the additional through hole is An additional injection tube may be inserted to inject the secondary filler 4 through the additional injection tube.

As described above, when the gap between the subgrade layer 10 and the HSB layer 20 is filled through the injection of the secondary filler (4), a general filling material such as a non-shrink mortar is injected into the through hole (2) through the through hole (2). Fills in the space created by). At this time, the through-hole 2 may be filled after the injection tube 1 is removed, and the filling pipe 1 may be filled in the state in which the inlet tube 1 is left. It is also possible to cut only the protruding part. FIG. 5 is a schematic longitudinal cross-sectional view of the concrete track showing the state in which the filling of the through hole 2 is thus completed.

As described in detail above, the concrete track rapid recovery method according to the present invention comprises the step of drilling and injection tube 1 through the through hole (2) penetrating the HSB layer 20 and the TCL layer 30; Settling return of the concrete track including the HSB layer 20 through the injection of the quick filling filler 3 and the secondary filler 4; And because it has a simple structure consisting of through-hole sealing step, it is possible to return the settlement amount within a short time, and thus there is an advantage that such a return operation does not interfere with the train passage.

In particular, in the rapid recovery method according to the present invention, since the concrete track is raised using the filler while the roadbed is maintained, the settlement is restored, so that damage to the roadbed or the upper concrete track can be minimized, thereby maximizing stability. There is an advantage.

In addition, since the quick-filling filler 3 and the secondary filler 4 used in the fast recovery method according to the present invention are all made of cement-based material, it is easy to fit the life thereof to be equal to or longer than the life of the concrete track. Do.

In particular, when the width of the concrete track is wide, there is an advantage that the rapid recovery method of the present invention can be easily applied through a method such as increasing the number of through holes accordingly. In addition, since the rapid recovery method of the present invention does not directly inject the chemical liquid whose effect is unclear, it has the advantage of reducing the cost of recovery compared to the prior art, the present invention is to restore the settlement It is effective to restore the abnormal state of the track.

1 is a schematic cross-sectional view seen in the longitudinal direction of a concrete track.

2 is a schematic plan view of a concrete track.

FIG. 3 is a schematic longitudinal cross-sectional view of a concrete track showing the state in which the quick filling filler is injected between the subgrade layer and the HSB layer through an injection tube. FIG.

4 is a schematic longitudinal cross-sectional view of the concrete track showing the state filled between the subgrade layer and the HSB layer by injecting secondary filler subsequent to the state of FIG.

FIG. 5 is a schematic longitudinal cross-sectional view of the concrete track showing the state of completion of filling of the through hole subsequent to the state of FIG. 4; FIG.

<Description of the symbols for the main parts of the drawings>

1 injection tube

2 through hole

3-quick filling

4 Secondary filler

5 level meter

10 roadbed

20 HSB Layers

30 TCL layers

40 sleepers

Claims (6)

HSB layer 20 made of concrete formed on the subgrade layer 10 made of soil, TCL layer 30 made of concrete formed on the HSB layer 20 to support the sleepers 40 and the rails, and the TCL. As a method for rapidly restoring the settled amount of the concrete track consisting of sleepers 40 installed on the layer 30, Forming a through hole (2) through the TCL layer (30) and the HSB layer (20), and inserting an injection tube into the through hole (2); Injecting a quick filling filler (3) between the subgrade layer (10) and the HSB layer (20) through the injection tube to raise the concrete trajectory including the HSB layer (20) by a predetermined recovery amount; Injecting a secondary filler 4 made of a flowable material into a space formed between the subgrade layer 10 and the HSB layer 20 through an injection tube; And By filling the through-holes (2), the concrete track settlement amount rapid recovery method, characterized in that to raise the concrete track by a recovery amount corresponding to the settlement of the roadbed to return from the settled state. The method of claim 1, The injection pipe is a rapid recovery method of settling amount of concrete tracks, characterized in that composed of a double tube having a configuration capable of separately injecting two materials. The method of claim 1, The injection tube is composed of a single tube that can inject a single material, respectively When the through hole 2 is drilled, the through hole for inserting the injection tube for the quick filling filler 3 and the through hole for inserting the injection tube for the secondary filler 4 are separately drilled. Rapid recovery of settlement of concrete tracks. The method according to any one of claims 1 to 3, In the step of raising the concrete track by the recovery amount, The level measuring device 5 is used to measure the height at which the concrete track rises, and accordingly, the injection pressure of the quick-filling filler 3 is adjusted to adjust the quick-filling filler 3 until the rising amount reaches a predetermined recovery amount. Rapid settlement method of settlement of the concrete track, characterized in that the injection. The method according to any one of claims 1 to 3, In the step of filling the through-holes (2), after the extraction pipe is removed by removing the filling hole in the through-holes (2) to fill the through-holes (2), characterized in that the rapid recovery of the settled concrete track. The method according to any one of claims 1 to 3, In the step of filling the through-hole (2), after filling the through-hole (2) by filling the filling material in the state of leaving the injection pipe, and then settles the rapid recovery of the settled concrete track, characterized in that only cutting the outer protruding portion of the injection pipe Way.

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