TWI658186B - Slab track repairing structure and embedded formwork for slab track repairing structure, and method for repairing slab track - Google Patents

Abstract

The invention provides a repair structure of a plate-type track and a method of repairing the plate-type track. When the filling layer is filled with the filling material for repair, the peeling sheet or the mold frame is not required to be removed, and it is also unnecessary to The filling material for repair is injected into the bag body and hardened, or the filling material for repair is injected again, and the repair operation can be performed efficiently.

The repair structure of the slab track is a plate track repaired by at least a filling layer sandwiched between a concrete roadbed and a track plate, and further provided with a track guide on the track plate. The plate track The repairing structure is provided with an insert mold frame in at least a part of the outer peripheral portion of the filling layer; and at least one of the insert mold frame or an area more inward than the insert mold frame contains a repair filling material. material.

Description

Slab track repair structure, embedded mold frame used for the slab track repair structure, and slab track repair method

The invention relates to a repairing structure of a slab track and a slab track repairing method. The slab track is provided by sandwiching a filling layer between a concrete roadbed and a track plate, and further provided with a track guide on the track plate Successor.

A plate-type track in which a track plate is provided on a concrete roadbed and a track guide is further fixed to the track plate is known from the past.

As shown in FIG. 1, such a slab track 10 is provided with a track plate 24 via a filling layer 22 above the concrete roadbed 20, and further, a pair of track guides 34 and 34 are arranged on the track plate 24. In addition, the track plate 24 has notches 26 and 26 at both ends, and the notches 26 and the notches 26 of the track plate 24 are aligned with the protrusions 28 and 28 provided on the concrete roadbed 20 at predetermined intervals. .

The filling layer 22 first lifts the track plate 24 to a predetermined position on the concrete roadbed 20 and passes through the gap formed in advance between the track plate 24 and the concrete roadbed 20 through the track plate 24 formed in advance. Filling holes (not shown) are filled with filling materials (such as cement-asphalt mortar: a mixture of cement and asphalt emulsion and fine aggregate (also known as CA mortar)) and hardened to form . The filling hole (not shown) is then closed by injecting a filling material or separately injecting a sealing material to the upper end. Furthermore, a filling material is also injected between the convex portion 28 and the notch portion 26.

In addition, the filling layer 22 may sometimes first lift the track plate 24 to a predetermined position on the concrete roadbed 20, and in the gap generated between the track plate 24 and the concrete roadbed 20, a CA mortar is injected in advance. A non-woven bag-like bag body is formed by curing in a gap.

However, the filling layer 22 of such a plate-type track 10 will be caused by, for example, the expansion and contraction caused by the temperature change of the track rail 34, the force exerted by a vehicle walking on the track rail 34, and the water penetrating the filling layer 22 will fill the layer 22 The elution of the alkali component gradually deteriorates the porosity (porosity) of the filling layer 22. In particular, the water infiltrated into the filling layer 22 will repeatedly freeze and dissolve, so that the deterioration of the filling layer 22 continues, and its influence is particularly significant in cold regions.

In this way, when the filling layer 22 is deteriorated, the exposed portion of the deteriorated filling layer is broken, and defects such as peeling and peeling are generated. Therefore, there is a demand for repairing the deteriorated portion as soon as possible.

In the past, a repair method (also referred to as an edge repair method) has been proposed as a repair method for such a plate-type track. The repair method is to arrange the surrounding part to be removed after removing the deteriorated part of the filling layer. A mold frame, and a repair material such as a vinyl ester resin is filled in the mold After the frame is hardened, the mold frame is removed to repair the supplementary filling layer (Patent Document 1).

In addition, a repair method (also known as a filling bag repair method) is also proposed as an additional repair method. After repairing the deteriorated part of the filling layer to form a void portion, a bag-shaped bag body is filled into the void portion. In this state, a filling material for repair is injected into the bag body to fill the gaps with the filling material for repair and repair the deteriorated part (Patent Document 2).

In addition, the bag body used for the filling bag repair method leaks the filling material for repair from the upper and lower surfaces of the bag body, whereby the bag body and the opposite upper and lower surfaces (track plate and concrete roadbed) are adhered.

[Prior technical literature] [Patent Literature]

Patent Document 1: Japanese Patent Application Laid-Open No. 2008-57318

Patent Document 2: Japanese Patent Application Publication No. 2012-180634

However, the repair method (edge repair method) disclosed in Patent Document 1 requires the installation and removal of the mold frame, which requires much time and labor in this operation, and is inefficient.

In addition, in this repair method (edge repair method), in order to prevent the repair material from adhering to the mold frame, when the mold frame is set, it is also necessary to sandwich a release sheet between the mold frame and the side surface of the track plate, so Settings, go It also takes time and cost.

In addition, the repairing method (filling bag repairing method) disclosed in Patent Document 2 must wait until the repairing filling material injected into the bag body filled into the gap portion is hardened, and then further move the bag between the bag body and the gap portion. In the remaining space, the filling material for repair is refilled and hardened, and at least two filling operations for the filling material for repair are required. The filling operation alone takes a lot of time.

Furthermore, this repair method (filling bag repair method) is that after the filling material for repair injected into the bag body leaks upward and downward, a gap is easily generated on the upper surface of the bag body, and at this time, it is necessary to perform repair again. In addition, the filling material for repair may be exposed to the outside from the gap above the bag body, and as a result, the efficiency is not good.

In addition, when there are few repair filling materials leaking from the bag body, the friction resistance between the upper surface of the bag body and the track plate, the lower surface of the bag body and the concrete roadbed will be low, and the filled bag body will not be firmly fixed to the In the void portion, there is a possibility that it may emerge from the void portion.

However, the repair work of slab tracks is usually restricted to late nights when vehicles are not in traffic. Therefore, it is expected that there can actually be a high-efficiency repair method, which can improve the conventional edge repair method or filling bag repair method. It is necessary to move the mold frame and the like to the job site within a limited operating time, and further to Poor efficiency in removal and removal, or even at least 2 filling operations.

The present invention has been developed in view of this fact, and its object is to provide a repairing structure of a plate type track and a method of repairing a plate type track. Method, when the filling layer is filled with the filling material for repair, it is not necessary to use a peeling sheet or remove the mold frame, and it is not necessary to inject the filling material for repair into the bag body and harden it, or to inject the repair material again. Filling material for efficient repair work.

The present invention was invented in order to achieve the problems and objectives of the conventional technology. The plate track repaired by the plate track repair structure of the present invention is provided at least with a filling layer sandwiched between a concrete roadbed and a track plate. Further, a track guide is provided on the track plate; the repair structure of the plate track is provided with an embedded mold frame in at least a part of the outer peripheral portion of the filling layer; and in the embedded mold frame or At least one of the areas further inside than the insert frame contains a repair filler.

In addition, the slab track repaired by the slab track repair method of the present invention is formed by setting a track plate at least on a concrete roadbed with a filling layer, and further comprising a track guide on the track plate; the plate track The repairing method includes at least: a step of forming a gap between the track plate and the concrete roadbed by removing the deteriorated portion of the filling layer from the exposed outer peripheral edge portion to a predetermined depth inside; The step of embedding the formwork in the gap formed between the track plate and the concrete roadbed; Filling for repair is performed in at least any one of the insert mold frame arranged in the gap portion or the space which is divided into the gap portion by the insert mold frame arranged in the gap portion and is more inside than the insert mold frame. A step of hardening the material; and a step of hardening the injected filling material for repairing.

In the case of such a repair structure and repair method, as long as the insert mold frame is arranged in the gap portion, the filling material for repair can be injected into at least one of the insert mold frame or a space more inward than the insert mold frame. After hardening with the filling material, it is not necessary to remove the insert mold frame, so the patch-type track repair can be performed efficiently.

In addition, in the repair structure of the plate-type track of the present invention, the insert formwork is fixed between the track plate and the concrete roadbed.

In this way, if the insert mold frame is fixed between the track plate and the concrete roadbed, it is preferable to reduce the risk of the insert mold frame falling out of the gap.

In addition, in the structure of the plate-type track of the present invention, the aforementioned insert mold frame has elasticity.

In this way, if it has elasticity, by preparing an insert mold frame that is thicker than the void portion, and arranging and inserting the insert mold frame in the void portion, the force of restoring the embedded mold frame in the void portion to the original size will be generated. Function, and the insert mold frame can be firmly fixed in the gap portion. And in this way, the gaps between the concrete subgrade, track plate and the embedded mold frame can be eliminated, and there is no leaking repair filling when filling the repair filling material. Material is better.

Further, in the repair structure of the plate-type track of the present invention, any one of the aforementioned insert mold frame type foamed molded body, a molded body formed by fixing fibers with an adhesive, a cork, and a soft plastic molded body .

If it is such a molded body, it is suitable for an insert mold frame. Moreover, these shaped bodies are easy to dispose in the gap portion, and they are also advantageous for transportation or handling due to their light weight. In addition, it is preferable that these formed bodies have stretchability.

Further, in the structure of the plate-type track of the present invention, the aforementioned foam molding system is composed of foamed polyurethane.

In particular, if it is a foamed polyurethane, it is more preferable from the viewpoint of compression disposition, processability, and economy.

Moreover, in the structure of the plate-type track of this invention, the said foaming molding system is a continuous-cell type foam.

In particular, in the case of a continuous-bubble foam, since the filling material for repair is easy to penetrate, it is easy to integrate the insert mold frame and the filling material for repair, and it is possible to more reliably repair the plate-type track.

In addition, in the structure of the plate-type track of the present invention, at least any one of the insertion mold frame, the track plate, and the insertion mold frame and the track plate has a space more inside than the insertion mold frame. Internally connected degassing holes.

As described above, if there are degassing holes, degassing in the void portion can be performed, and the filling material for repair can be filled without gaps.

Moreover, in the repair structure of the plate-type track of this invention, the said filling material for repair contains a synthetic resin.

As described above, when the filling material for repair contains a synthetic resin, it is particularly desirable from the viewpoint of filling properties and hardenability.

Moreover, in the repair structure of the plate-type track of this invention, the said filling material for repair is a multi-component type.

In this way, if the filling material for repair is a multi-component type, for example, the curing time, viscosity, and filling properties of the filling material for repair can be appropriately changed in accordance with the state of the site, and it is preferable.

In addition, in the repair structure of the plate-type track of the present invention, the filling layer is made of cement asphalt mortar.

This kind of cement asphalt mortar is the initial material for laying slab track, and it can also be applied to the case where repair is performed for the first time from this initial state.

In addition, in the repair structure of the plate-type track of the present invention, the aforementioned filling layer is composed of cement asphalt mortar and a repair material.

This type of cement asphalt mortar and repairing material is not only the first material for laying a plate-type track, but also, for example, a publicly-known person used as a repairing material when repairing has been performed, and it has been performed since the initial state. In the case of one or more repairs, the repair structure of the present invention can be suitably used.

In addition, the repair material is, for example, a filler such as a vinyl ester resin disclosed in the above-mentioned Patent Document 1, a filler material such as a polyurethane-based resin repair material, CA mortar, or the like, as disclosed in Patent Document 2. The bag body of the filler material, or the bag body in which the injected repair filler material has leaked from the surroundings, can be any repair material if the user is a known repair method. Of course, the repairing material, like the material of the original filling layer, also contains cement asphalt mortar.

Further, in the structure of the plate-type track of the present invention, the aforementioned insert mold frame has a barrier layer on an outer peripheral side surface thereof.

In this way, if the insert mold frame has a barrier layer on its outer peripheral side, it is possible to prevent the insert mold frame from being degraded by ultraviolet rays, prevent the intrusion of water and the like, and improve weather resistance. In addition, the barrier layer may be a hardened material itself which has penetrated into the embedded mold frame as a repair filling material, or may be a supplementary filler material leaked from the embedded mold frame, or a supplementary material coated on the outer surface of the embedded mold frame. It can be made of filling material, or it can be another plate-shaped barrier layer prepared in advance, and it can be adhered to the outer side surface of the embedded mold frame.

Further, in the method for repairing a plate-type track of the present invention, after the step of forming the void portion, there is a step of drying the inside of the void portion.

In this way, if the inside of the void portion is dried, the adhesive strength of the filling layer and the repair filling material from which the deteriorated portion has been removed can be improved, and the patch rail repair can be performed reliably.

In addition, in the method of the plate-type track of the present invention, in the step of injecting the filling material for repair, the filling material for repair is injected through an injection hole provided at a position selected from Between the formwork and the track plate, between the embedded formwork and the concrete subgrade, between the track plate, the concrete subgrade, between the embedded formwork and the embedded formwork, At least one of the groups formed between the mold frame and the filling layer.

With such an injection hole, the filling material for repair can be reliably injected into the insert mold frame arranged in the void portion or divided into the void portion by the insert mold frame arranged in the void portion rather than the insert mold frame. At least one of the inside spaces.

In addition, the insert mold frame of the present invention is used for the repair structure of any of the above-mentioned plate-type rails.

If it is such an insert mold frame, the gap portion can be reliably sealed and the filling material for repair can be filled. Therefore, the work efficiency is improved, and it can be suitably used in the repair structure of a plate-type track.

The repair structure and repair method of the plate-type track of the present invention only need to remove the degraded filling layer to form a void portion, and the embedding mold frame is arranged in the void portion from the outside, and then is inserted into the embedding mold frame. Or it is sufficient to inject the repairing filler material and harden the repairing filler material in at least one of the spaces inside the mold frame. Therefore, it is possible to efficiently and reliably repair the deteriorated filler material in a shorter time than the conventional technique. Floor.

In addition, it is no longer necessary to remove the mold frame required in the conventional method (edge repair method), and the efficiency of the repair operation can be improved.

In addition, the time and labor of injecting the repairing filling material into the bag body in the conventional method (filling bag repair method) can be saved, and the risk of leakage of the repairing filling material caused by the operation can be further reduced, and the Improve work efficiency.

In addition, in the repair structure of the present invention, if the embedded mold The frame is fixed between the track plate and the concrete roadbed, which can reduce the possibility of the insert formwork falling off from the gap.

Furthermore, if the insert mold frame has elasticity, it can be compressed and arranged in the void portion from the outside, and therefore, the insert mold frame can be firmly fixed in the void portion.

In addition, when any one of a foamed molded body, a molded body formed by fixing fibers with a binder, a cork, and a soft plastic molded body is used as an insert mold frame, it can be easily placed in the void portion, and can be more easily placed. Further improve operation efficiency. In addition, because of its light weight, it is also convenient for transportation or handling.

10‧‧‧ Slab track

20‧‧‧concrete roadbed

22‧‧‧ filling layer

24‧‧‧ Track plate

26‧‧‧ gap

28‧‧‧ convex

30A, 30B‧‧‧Gap section

32‧‧‧embedded mold frame

34‧‧‧rail guide

38‧‧‧Injection hole parts

40‧‧‧pressure tube

42‧‧‧ Filling material for repair

44‧‧‧ Filling device

46‧‧‧Airtight Containment Tank

48‧‧‧airtight containment tank

49‧‧‧Press-feed machine

50‧‧‧ mixer

52‧‧‧ injection tube

54‧‧‧ opening and closing means

56‧‧‧ filling hole

60‧‧‧Degassing hole

FIG. 1 is a perspective view showing the structure of a plate-type track in a partial cross section.

FIG. 2 is a plan view of a plate-type track, and from the outer peripheral edge portion to the portion indicated by the dotted line, a void portion is formed by removing a portion where the filling layer has deteriorated.

FIG. 3 is a plan view showing a void portion after the deteriorated filling layer is removed.

Fig. 4 (A) is a partial cross-sectional view showing a state where the degraded filling layer is removed, and Fig. 4 (B) is a partial cross-sectional view showing a state where an insert mold frame is arranged. Fig. 4 (C) is a A partial cross-sectional view showing a state where an injection hole is provided in the insert mold frame.

Fig. 5 (A) shows a state where a filling hole is used instead of an injection hole. FIG. 5 (B) is a partial cross-sectional view showing a state after the filling material for repair is injected, and FIG. 5 (C) is a partial cross-sectional view showing a state after the injection hole is processed.

Fig. 6 is a working step diagram of the method for repairing the plate track of the present invention.

FIG. 7 is a perspective view showing a state immediately before the insert mold frame is placed in the void portion.

FIG. 8 is an explanatory diagram showing a state in which a repair filling material is injected into a space that is partitioned between the embedding mold frame and the filling layer in a compressed configuration and is more inward than the embedding mold frame.

Fig. 9 is a partial cross-sectional view when a degassing hole is provided between the insert mold frame and the track plate.

Fig. 10 is an explanatory view showing a state where an insert mold frame having an injection hole and a degassing hole is arranged in the gap portion.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The repairing structure and the repairing method of the plate type track of the present invention are used in a plate type track formed by setting a track plate on a concrete roadbed via a filling layer and further fastening the track guide on the track plate. To repair cracks, peeling, peeling, etc. caused by the deterioration of the filling layer.

<Slab track 10>

As shown in Fig. 1, the plate type that accepts the repair structure construction of the present invention The track 10 is formed by placing a track plate 24 on a concrete roadbed 20 via a filling layer 22 and further arranging a pair of track guides 34 and 34 on the track plate 24.

Here, in the concrete subgrade 20, convex portions 28 are protruded at every predetermined interval. On the other hand, at both ends of the track plate 24, notch portions 26 and 26 are respectively provided at positions where there is only a slight gap with respect to the interval of the convex portion 28, and between the convex portion 28 and the convex portion 28, The track plates 24 are arranged so that the notch portions 26 and 26 at both ends are aligned respectively.

In addition, a pair of rail guides 34 and 34 are laid on the rail plate 24, and the rail guides 34 are respectively fixed to the rail plate 24 by a plurality of fastening members (not shown).

The filling layer 22 provided between the track plate 24 and the concrete roadbed 20 may be deteriorated due to external force caused by the expansion and contraction stress caused by the temperature change of the track guide 34, the passage of the train, the centrifugal force, etc., or the intrusion of moisture. , Over time, cracks, peeling, peeling, etc. occur from the exposed portion.

Therefore, when these symptoms occur, or when a predetermined period of time has elapsed, the filling layer 22 is repaired.

In addition, the filling layer 22 in this specification is, of course, a layer composed of only cement and asphalt mortar that was provided when the slab track 10 was first laid, but it may also be a layer formed by injecting the cement and asphalt mortar into the bag body. .

In addition, it may be a filling layer 22 which has been repaired by the plate-type track 10. That is, it may be modified as disclosed in Patent Document 1. The filling layer 22 consisting of cement asphalt mortar and repairing material for filling the gaps, or the filling of voids by injecting the repairing material into the bag body as disclosed in Patent Document 2 is made of cement asphalt and repairing materials. The filling layer 22 and the like.

Here, the repairing material is not limited to any known repairing material, and may be, for example, the same cement asphalt mortar as when the plate-type track 10 was first laid.

In other words, the material of the filling layer 22 between the concrete roadbed 20 and the track plate 24 to be repaired is not particularly limited.

The present invention has characteristics in the repair structure and repair method of the plate-type track 10, especially in the repair structure and repair method of the filling layer 22. The repair structure and repair method and the embedded mold frame used for the repair structure will be described below. 32 will be described.

<Repair Structure of Plate Rail 10>

In the repair structure of the plate-type track 10 of the present invention, at least a part of the outer peripheral portion of the filling layer 22 is removed from the exposed outer peripheral portion to a predetermined depth on the inner side, and Between the removed portion, the track plate 24, and the concrete subgrade 20, void portions 30A and 30B having a substantially U-shaped cross section are formed (for example, FIG. 4 (A)).

Further, an insert mold frame 32 (for example, FIG. 4 (B)) is provided in the void portions 30A and 30B, and the insert mold frame 32 or the void portions 30A and 30B are located inward of the insert mold frame 32. At least one of the regions is filled with a repair filler 42 (for example, FIG. 5 (C)), thereby constituting the repair structure of the plate-type track 10.

Here, it is preferable that the insert mold frame 32 has elasticity and is easily disposed in the void portions 30A and 30B formed by removing the degraded portion of the filling layer 22. For example, it is preferable that the insert frame 32 is foamed by an elastomer or the like. Either a foamed molded body such as a body or a sponge, a molded body formed by fixing fibers with an adhesive, a molded body made of cork, or a soft plastic molded body, among them, a foamed molded body is particularly preferred.

If the insert mold frame 32 is a foamed molded body, a molded body formed by fixing fibers with an adhesive, a molded body made of cork, or a soft plastic molded body, it is easy to place in the void portions 30A and 30B. Due to its light weight, it is also good for transport or handling.

In addition, specific examples of the foamed molded body are preferably, for example, foamed polyurethane, foamed silicone, and rubber sponge. Among them, from the viewpoints of handling (compression arrangement, processability), economy, and the like, In other words, foamed polyurethane is particularly preferred.

In addition, in consideration of the permeability (easy penetration) of a repair filler 42 to be described later, the foamed molding system is preferably a continuous-cell foam. By using the continuous-cell foam as the foamed molded body, the injected repair filling material 42 penetrates into the foamed molded body, and the foamed molded body and the injected repaired filling material 42 are easily made. Integration. By integration, the part of the insert mold frame 32 is strengthened, and the deterioration can be repaired more strongly.

At the same time, the repair filling material 42 which has penetrated into the inside of the foamed formed body may also seep into the rail plate 24 surface side or the concrete roadbed 20 surface side in some amount. Therefore, at this time, the foamed molded body will be filled with the repair filling material. The material 42 is hardened and is firmly fixed to the side of the surface.

In addition, even when a foamed molded body is not used as the insert mold frame 32, there may be a filling for repair through a small gap between the insert mold frame 32 and the track plate 24, or between the insert mold frame 32 and the concrete roadbed 20.材 42。 Case 42. At this time, the insert formwork frame 32 tends to be fixed to the track plate 24 or the concrete roadbed 20 and is therefore preferable.

In addition, specific examples of the soft plastic molded body include, for example, EVA (ethylene vinyl acetate copolymer) resin, low-density polyethylene (LDPE), and polypropylene (polypropylene; Polypropylene (PP) and other polyolefins, polyethylene-telephthalate (PET), nylon (nylon), polystyrene (PS), polyurethane (polyurethane), and elastomers Shaped body.

On the other hand, the repair filler 42 is not limited as long as it is a known one, but it is preferably one prepared by blending. The prepared repair filler 42 includes, for example, a multi-component repair filler 42, and is preferably a two-component repair filler 42.

In addition, the repairing filler 42 may be one that hardens after filling, but it is preferably one containing a synthetic resin from the viewpoint of filling and curing properties.

The synthetic resin is not limited to a polyurethane resin, and may be a radical polymerization resin such as a vinyl ester resin, a polyester acrylate resin, or an epoxy resin.

In addition, in order to harden the synthetic resin, Use hardener or hardening accelerator. In addition, from the viewpoints of the mechanical strength, durability, and economy of the hardened filler repair material, the repair filler is used to mix synthetic pigments (silicon dioxide, calcium carbonate, etc.) or bone in a synthetic resin. Materials (silica sand, etc.) are preferred. For example, in the filler for repair, if it is a body pigment (silicon dioxide, calcium carbonate, etc.), it may contain 10 to 60% by weight, and if it is an aggregate (silica sand, etc.), it may contain 20 to 80% by weight. proportion.

<Repairing method of plate rail 10>

The method for repairing the plate-type track 10 of the present invention will be described using the diagrams shown in FIGS. 1 to 5 and the flowchart diagrams shown in FIG. 6. In addition, although there are some parts that are not disclosed in the basic structure of the plate-type track 10 shown in FIG. 1 according to the different diagrams, they are not recorded intentionally to make the description easier to understand, rather than Especially used to limit the constructor.

[Procedure for forming a gap between the track plate 24 and the concrete subgrade 20]

First, in the method for repairing the plate-type track 10 of the present invention, as shown in FIG. 2, FIG. 4 (A), and FIG. 6, the deteriorated portion of the filling layer 22 is exposed from the exposed peripheral edge portion. The gaps 30A and 30B are formed between the track plate 24 and the concrete roadbed 20 until the inner side is removed to a predetermined depth (step S100 in FIG. 6).

Basically, the degraded portion of the filling layer 22 is completely removed, and the filling layer 22 under the track plate 24 can also be completely removed. The filling layer 22 particularly deteriorates from the exposed outer periphery, and tends to deteriorate rapidly at four corners. That is, this is the load in the up-down direction of the track plate 24 caused by the load of the guide rail applied on the track plate 24 The heavy change is particularly large in four corners.

Therefore, as shown in FIG. 2 or FIG. 3, the four corners of the filling layer 22 in this embodiment are set to a substantially triangular range, and the range is preferably cut out.

The specific cut-off amount (discarded amount) at the four corners, that is, the size of the gap portion 30A, can be appropriately set according to the deterioration condition at the time of field confirmation, but for example, as shown in Figure 3, The four corners of the layer 22 have a starting point of about 0.7 m toward the formation direction of the convex portion 28 (upward and downward directions in FIG. 3) and about 0.5 m toward the laying direction of the rail guide 34 (left and right directions in FIG. 3). A roughly right-angled triangle is preferred.

On the other hand, in addition to the four corners of the filling layer 22, as shown in FIG. 2 or FIG. 3, it is also formed on the side of the laying direction of the rail guide 34 of the filling layer 22 (the left and right directions in FIG. 3). A certain depth of the void portion 30B. Thereby, the void portions 30A and 30B are formed on the outer periphery of the filling layer 22.

In addition, after the void portions 30A and 30B are formed, the inside of the void portions 30A and 30B is preferably cleaned and dried. The drying means is not particularly limited, but if, for example, a gas burner is used for drying, it is preferable to reduce the working time (step S101 in FIG. 6).

In addition, when refilling the filling layer 22, when the filling layer 22 is composed of cement asphalt mortar and repairing material, for example, the repairing material is usually exposed to the outside. Therefore, the repairing may be performed by using appropriate tools or machinery. After the material is removed, the deteriorated cement asphalt mortar is removed in the same manner as described above.

[Procedure for arranging the insert mold frame in the gaps 30A and 30B]

After forming the void portions 30A and 30B, as shown in Figs. 4 (B) and 7, the insert mold frame 32 is arranged in the void portions 30A and 30B (Fig. 7 shows the state immediately before the placement, Eli's understanding of the relationship between the insert mold frame 32 and the void portions 30A, 30B).

When the insert mold frame 32 is arranged, the insert mold frame 32 may be directly arranged in the gap portions 30A and 30B, but it may be, for example, the entire inner surface of the gap portions 30A and 30B or only in the gap where the insert mold frame 32 is provided. The inner surfaces of the sections 30A, 30B are coated with a primer, a filling material for repair or an adhesive, and then arranged, and then the embedding frame 32 is fixed between the track plate 24 and the concrete roadbed 20.

In addition, although there is generally no void portion around the convex portion 28, when there is a void portion, the insert mold frame may be disposed there.

As shown in FIGS. 4 (B) and 7, the insert mold frame 32 is arranged along the openings of the gap portions 30A and 30B (step S102 in FIG. 6). The dimensions (thickness) in the height direction of the insert mold frame 32 are at least the same as the dimensions in the height direction of the void portions 30A and 30B, and may be sufficient to ensure the size (thickness) of the void portions 30A and 30B. For compressible placement, a size (thickness) that is slightly larger than the height direction dimensions of the void portions 30A and 30B is preferred. Thereby, it is possible to reduce the possibility that the insert mold frame 32 may fall off from the arrangement place to the outside.

In addition, the compression-molded insert mold frame 32 is divided into appropriate lengths first, and then follows the openings of the gaps 30A and 30B. Sequence link is better.

For the insert mold frame 32, for example, the insert mold frame 32 having a size of 5,000 mm (length) x 80 mm (height) x 40 mm (width) can be used. Generally, since the distance between the concrete roadbed 20 and the track plate 24 is 60 mm, if the height is 80 mm, it can be appropriately compressed and arranged. Since the front and back heights differ depending on the repairing place, it is only necessary to change the height of the insert mold frame 32 at this time.

In addition, 5,000 mm is a length in the longitudinal direction of a general rail plate 24. As for the width, if it is 15 mm or more, pressure is applied when the filling material for repair is injected, and the insert mold frame 32 is less likely to fall out from the placement place to the outside and is preferable.

The insert mold frame 32 is arranged near the outer peripheral edge portions of the void portions 30A and 30B, and the insert mold frame 32 disposed in the void portions 30A and 30B is used to divide the space in the void portions 30A and 30B. The amount of the filling material for repair in the void portions 30A and 30B is increased, which is preferable. However, even if the insert mold frame 32 is arranged so as to almost completely fill the gaps 30A and 30B, there is no technical problem, and this method may be selected as appropriate.

In any case, as long as the insert mold frame 32 is a foamed molded body, the repair filling material to be described later can be penetrated into the insert mold frame 32, so that the insert mold frame 32 and the repair filler material can be integrated.

In addition, the insert mold frame 32 may have a barrier layer (not shown) on the outer peripheral side surface. The barrier layer refers to a layer existing on at least the surface (near the surface) of the insert mold frame 32 composed of a foamed molded body or the like. When the repair filling material penetrates into the insert mold frame 32, the repair filling material Infiltration The hardened material of the mold frame 32 itself is called a barrier layer.

This type of barrier layer can be an inlay mold frame 32 formed by pasting a plate-shaped barrier layer with a filling material for repair in advance, and it is also possible to coat and repair the exposed outer surface of the arranged inlay mold frame 32 further. Formed with filling materials. In this way, the weather resistance of the insert mold frame 32 can be improved.

[Procedure for filling filling material for repair]

After arranging the insert mold frame 32 in the void portions 30A and 30B, inject at least one of the insert mold frame 32 or the space inside the void portions 30A and 30B divided by the insert mold frame 32 into the void portions 30A and 30B. Repairing filler 42 (step S106 in FIG. 6).

The repair filler 42 can be used without particular limitation, but when the prepared repair filler 42 is used, the preparation system of the repair filler 42 is, for example, a filling device as shown in FIG. 8. 44 to proceed.

The filling device 44 is provided with an airtight storage tank 46 filled with the first liquid belonging to the main agent component (step S103 in FIG. 6), and an airtight storage tank 48 filled with the second liquid belonging to the hardener component. Liquid (step S104 in FIG. 6); the pressure feeding machine 49 sends air to the airtight storage tanks 46 and 48; and a mixer 50 for mixing the airtight tanks 46 and 48 from the airtight storage tanks 46 and 48; Liquid I and Liquid II.

Here, the first liquid belonging to the main agent component and the second liquid belonging to the hardener component are sold under the trade name of the applicant "CUS-RE20 A material (polyurethane resin-based main agent), CUS-RE20 B material (hardener for polyurethane resin) "or" CUS-UB20 A material (polyurethane resin main Agent), CUS-UB B material (hardener for polyurethane resin) "is preferred.

The mixer 50 mixes (stirs) the first liquid and the second liquid sent from each of the airtight storage tanks 46 and 48, and the mixture is discharged from the injection pipe 52 (step S105 in FIG. 6). At this time, the weight ratio of the final mixture is preferably mixed so that the mixing ratio of the first liquid and the second liquid becomes about 100: 25.

In addition, the mixer 50 is equipped with a manual opening-closing means 54 for controlling the outflow of the mixed liquid to the injection pipe 52, and when the repair filling material 42 is injected into the gaps 30A and 30B from the injection pipe 52, the opening and closing operation is performed. Means 54 while opening the flow path. The pressure feeding device 49 is not particularly limited, but a pump such as a diaphragm pump is preferably used.

Next, as shown in FIG. 4 (C) and FIG. 8, the injection pipe 52 of the mixer 50 is inserted into the pressure-resistant pipe 40 and tightly coupled with it, and the repair filling material is injected into the gap portions 30A and 30B. This pressure-resistant tube 40 is attached to the insert mold frame 32 through the injection hole part 38 (step S106 in FIG. 6).

Here, the injection hole used to inject the filling material for repair into the gap portions 30A and 30B may be, for example, a hole formed by the pressure-resistant tube 40 and the injection hole part 38 as shown in the embodiment, but it may also be A hole formed in the insert mold frame 32 is simply penetrated. In addition, when an injection hole is provided in the embedding mold frame 32, a gap may be reserved between the divided plural embedding mold frames, and this gap is used as an injection hole. Furthermore, the embedding mold frame 32 and the The remaining filling layers 22 are used as injection holes.

In addition, when the insert mold frame 32 is provided in the gap portions 30A and 30B, the insert mold frame 32 may be inserted between the insert mold frame 32 and the track plate 24 or the insert mold frame. A gap is reserved between 32 and the concrete roadbed 20, and this gap is used as an injection hole.

The flow path of the opening / closing means 54 is opened by turning the opening / closing control lever of the opening / closing means 54, and the repairing filler is injected from the injection tube 52 into the pressure-resistant tube 40, and further injected into the gap portions 30A and 30B through the injection hole part 38. Here, for the injection hole part 38, it is preferable to use a resin joint (bamboo joint) for a hose, and for the pressure resistant pipe 40, it is preferable to use a Tedlon braided pipe.

Thereby, a filling material for repair is injected into at least one of the insertion mold frame 32 or the space separated by the insertion mold frame 32 in the gap portions 30A and 30B from the inside of the insertion mold frame 32.

In addition, in the above-mentioned step of forming the void portion 30A and the void portion 30B in the filling layer 22, as shown in FIG. 5 (A), when the deteriorated portion of the filling layer 22 is removed, the depth reaches the orbit. In the case of the position of the filling hole 56 in the plate 24, after the content filled in the filling hole 56 is removed, a filling material for repair is injected from the filling hole 56. That is, at this time, the filling hole 56 functions as an injection hole.

In addition, when air is left in the space partitioned by the insert mold frame 32 in the void portions 30A and 30B than the insert mold frame 32 during injection, there is a possibility that the filling material for repair cannot be filled. Therefore, at least one of the insert mold frame 32, the rail plate 24, and between the insert mold frame 32 and the rail plate 24 is communicated with a space inside the void portions 30A, 30B which is more inside than the insert mold frame 32. Degassing holes 60 are preferred.

As shown in FIGS. 9 and 10, the deaeration hole 60 is, for example, When the insert mold frame 32 is arranged in the gap portions 30A and 30B, it is preferable to be provided together with the insert mold frame 32. The deaeration hole 60 is preferably provided to discharge air from the inside of the gap portions 30A and 30B toward a higher position.

When the degassing hole 60 is provided, after confirming that the filling material for repair reaches the degassing hole 60, the injection of the filling material 42 for repair is completed. That is, the flow path is closed by the opening and closing means 54, and the pressure-resistant tube 40 is bent and clamped with a clip to block the injection tube 52. After that, the injection tube 52 is removed from the pressure-resistant tube 40 to complete the filling material for repair 42 injection (Figure 5 (B)).

In addition, after the filling material for repair is injected, it is preferable to perform post-treatment of the injection hole. In terms of post-treatment, for example, the injection hole part 38 (usually made of plastic such as PE) can be removed and removed, or the filling can be used for repair After the material 42 is hardened, the end portion is cut with a blade (Fig. 5 (C)).

[Step of Hardening Injected Repairing Filling Material] The injected repairing filling material 42 is, for example, left to harden at 23 ° C. for 20 to 30 minutes (step S107 in FIG. 6).

In addition, when the liquid level of the deaeration hole 60 is lowered as the repair filler 42 hardens, it is preferable to maintain the liquid level by separately adding a repair filler 42 from the deaeration hole 60.

Furthermore, after the repair filling material 42 is hardened, the surrounding finishing and cleaning are completed (step S108 in FIG. 6), and the repair of the filling layer 22 of the plate-type track 10 is completed.

In the case where the repairing site is divided into several parts, it is sufficient to perform the same operation as long as the insert mold frame 32 is placed in the other repairing site and the filling material 42 is injected during the step of hardening.

Although the preferred embodiments of the repair structure and repair method of the plate-type track of the present invention have been described above, the present invention is not limited to the above-mentioned form, and various changes can be made without departing from the purpose of the present invention.

Claims (16)

A repairing structure of a slab track, the slab track is formed by sandwiching a filling layer between at least a concrete roadbed and a track slab, and further comprising a track guide on the track slab; the repair of the slab track The structure is provided with an insert mold frame in at least a part of the outer peripheral portion of the filling layer, and an injection hole for injecting the filling material for repair is formed in the insert mold frame; At least one of the inner regions further contains the repair filler. The repair structure of the plate type track according to item 1 of the scope of the patent application, wherein the embedded formwork is fixed between the track plate and the concrete roadbed. The repair structure of the plate-type track according to item 1 or item 2 of the scope of the patent application, wherein the aforementioned embedded mold frame is flexible. The repair structure of the plate-type track according to item 1 of the scope of the patent application, wherein the above-mentioned insert mold frame is a foamed molded body, a molded body formed by fixing fibers with an adhesive, a cork, and a soft plastic formed body. Anybody. The repair structure of the plate-type track according to item 4 of the scope of the patent application, wherein the aforementioned foam forming system is composed of foamed polyurethane. The repair structure of the plate-type track according to item 4 or item 5 of the scope of application for a patent, wherein the aforementioned foam forming system is a continuous bubble type foam. The repair structure of the plate-type track according to item 1 of the scope of the patent application, wherein at least any one of the above-mentioned embedding frame, the above-mentioned orbit plate, and between the above-mentioned embedding frame and the orbit plate has the same embedding as that of the above-mentioned Degassing holes communicating in the inner space of the mold frame. The repair structure of the plate-type track according to item 1 of the scope of patent application, wherein the filling material for repair contains a synthetic resin. The repair structure of the plate-type track according to item 1 of the patent application scope, wherein the filling material for repair is a multi-component type. According to the repairing structure of the plate-type track described in item 1 of the scope of the patent application, wherein the aforementioned filling layer is composed of cement asphalt mortar. The repair structure of the plate-type track according to item 1 of the scope of the patent application, wherein the aforementioned filling layer is composed of cement asphalt mortar and repair material. The repair structure of the plate-type track according to item 1 of the scope of the patent application, wherein the embedded mold frame has a barrier layer on an outer peripheral side surface thereof. An embedded mold frame is used for the repair structure of the plate-type track described in item 1 of the patent application scope. The embedded mold frame forms an injection hole for injecting a filling material for repair. A method for repairing a slab track. The slab track is a system in which a track plate is provided at least on a concrete roadbed via a filling layer, and a track guide is further arranged on the track plate. The repair method of the plate track is at least The step of removing the deteriorated portion of the filling layer from the exposed outer peripheral edge portion to a predetermined depth inside, and forming a gap portion between the track plate and the concrete roadbed; and forming a gap between the track plate and the concrete roadbed A step of arranging the insert mold frame in the gap portion formed between the two; the insert mold frame disposed in the gap portion or divided into the void portion by the insert mold frame disposed in the gap portion is smaller than the insert mold; A step of injecting a filling material for repair in at least one of the spaces further inside the frame; and a step of hardening the injected filling material for repair. The method for repairing a plate-type track according to item 14 of the scope of application for a patent, further comprising a step of drying the inside of the void portion after the step of forming the void portion. The method for repairing a plate-type track according to item 14 or 15 of the scope of application for a patent, wherein, in the step of injecting the filling material for repair, the filling material for repair is injected through an injection hole, and the injection hole is provided It is selected from among the aforementioned embedded formwork, between the embedded formwork and the track plate, between the embedded formwork and the concrete roadbed, the track plate, the concrete subgrade, between the embedded formwork and the embedded formwork, and between the embedded formwork and the filling layer. At least one place in a group of rooms.