JP2018096140A - Sleeper repair method and sleeper repair structure - Google Patents

Sleeper repair method and sleeper repair structure Download PDF

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JP2018096140A
JP2018096140A JP2016242440A JP2016242440A JP2018096140A JP 2018096140 A JP2018096140 A JP 2018096140A JP 2016242440 A JP2016242440 A JP 2016242440A JP 2016242440 A JP2016242440 A JP 2016242440A JP 2018096140 A JP2018096140 A JP 2018096140A
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sleeper
core material
filling
recessed portion
curing agent
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今村　昌信
Masanobu Imamura
昌信 今村
足立　剛一
Koichi Adachi
剛一 足立
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a sleeper repair method capable of increasing the strength of a repaired concave portion on a sleeper.SOLUTION: In a sleeper repair method for repairing a concave portion 52 which occurs on the bottom of a tie plate located on an existing sleeper 51, a core material 11 comprised of an expanding material having a cell number of 13/25 mm or less as stipulated in JIS K 6400-1 is arranged in the concave portion of the sleeper. A filling hardening agent 21A is then poured into the concave portion. An abrasion resisting plate 16 is then fitted into the opening 52a of the concave portion and the filling hardening agent is hardened.SELECTED DRAWING: Figure 6

Description

本発明は、まくら木の補修方法及びまくら木の補修構造に関する。   The present invention relates to a sleeper tree repair method and a sleeper tree repair structure.

従来、既設のまくら木におけるタイプレートの下方に生じた凹み部分を補修するまくら木の補修方法（以下、単に補修方法とも略称する）が知られている（例えば、特許文献１及び２参照）。   2. Description of the Related Art Conventionally, a sleeper tree repair method for repairing a recessed portion generated below a tie plate in an existing sleeper tree (hereinafter simply referred to as a repair method) is known (see, for example, Patent Documents 1 and 2).

この補修方法では、作業者は、まくら木の凹み部分内に芯材を配置するとともに、まくら木の凹み部分に、充填硬化剤を流し込む。凹み部分の開口部に耐摩耗板を嵌まり込ませて、充填硬化剤を硬化させる。   In this repairing method, the operator places the core material in the recessed portion of the sleeper tree and pours the filling curing agent into the recessed portion of the sleeper tree. A wear-resistant plate is fitted into the opening of the recessed portion to cure the filling curing agent.

特開２００２−４２０５号公報Japanese Patent Laid-Open No. 2002-4205 特許第３９０３０１７号公報Japanese Patent No. 3903017

しかしながら、従来の補修方法では、まくら木における補修された凹み部分の強度が足りないという問題がある。   However, the conventional repair method has a problem that the strength of the repaired dent portion in the sleeper is insufficient.

本発明は、このような問題点に鑑みてなされたものであって、まくら木における補修された凹み部分の強度を高めることができるまくら木の補修方法及びまくら木の補修構造を提供することを目的とする。   This invention is made in view of such a problem, Comprising: It aims at providing the repair method and the repair structure of the sleeper tree which can raise the intensity | strength of the dent part repaired in the sleeper tree. .

上記課題を解決するために、この発明は以下の手段を提案している。
本発明のまくら木の補修方法は、既設のまくら木におけるタイプレートの下方に生じた凹み部分を補修するまくら木の補修方法であって、前記まくら木の前記凹み部分内に、ＪＩＳ Ｋ ６４００−１の規定によるセル数が１３個／２５ｍｍ以下である発泡体で形成された芯材を配置し、前記凹み部分内に充填硬化剤を流し込み、前記凹み部分の開口部に耐摩耗板を嵌まり込ませて前記充填硬化剤を硬化させることを特徴としている。
また、本発明のまくら木の補修構造は、既設のまくら木におけるタイプレートの下方に生じた凹み部分を補修するまくら木の補修構造であって、ＪＩＳ Ｋ ６４００−１の規定によるセル数が１３個／２５ｍｍ以下である発泡体で形成され、前記凹み部分内に配置された芯材と、前記凹み部分の開口部に嵌まり込むように配置された耐摩耗板と、前記凹み部分内に収容された充填硬化部と、を備えることを特徴としている。 In order to solve the above problems, the present invention proposes the following means.
The sleeper tree repair method of the present invention is a sleeper tree repairing method for repairing a recessed part generated below a tie plate in an existing sleeper tree, and is provided in the recessed part of the sleeper tree according to the provisions of JIS K 6400-1. A core material made of a foam having a number of cells of 13 cells / 25 mm or less is arranged, a filling hardener is poured into the recessed portion, and an abrasion-resistant plate is fitted into the opening of the recessed portion. It is characterized by curing the filling curing agent.
Moreover, the sleeper repair structure of the present invention is a sleeper repair structure for repairing a dent portion formed below a tie plate in an existing sleeper, and the number of cells according to JIS K 6400-1 is 13/25 mm. A core material that is formed of a foam that is the following and is disposed in the recessed portion, a wear-resistant plate that is disposed so as to be fitted into the opening of the recessed portion, and a filling that is accommodated in the recessed portion. And a curing part.

これらの発明によれば、芯材のセル数が１３個／２５ｍｍ以下であるため、芯材の各オープンセルの大きさが大きくなり、充填硬化部が硬化する前の充填硬化剤を芯材が十分に吸収する。したがって、芯材内で充填硬化剤が硬化して充填硬化部になったときに芯材が硬くなり、まくら木における補修された凹み部分の強度を高めることができる。   According to these inventions, since the number of cells of the core material is 13/25 mm or less, the size of each open cell of the core material is increased, and the core material is used as the filling curing agent before the filling and curing portion is cured. Absorb sufficiently. Therefore, the core material is hardened when the filling and curing agent is cured in the core material to form the filled and hardened portion, and the strength of the repaired dent portion in the sleeper can be increased.

また、上記のまくら木の補修方法において、前記芯材の前記セル数が８個／２５ｍｍ以上であってもよい。
この発明によれば、芯材の各オープンセルの大きさが大きくなり過ぎて、芯材に吸収させた充填硬化剤が芯材から流れ出てしまうのを抑えることができる。
また、上記のまくら木の補修方法において、前記充填硬化剤の粘度が０．５Ｐａ・ｓ以下であってもよい。
この発明によれば、充填硬化剤の流動性が高まり、芯材が充填硬化剤を十分に吸収する。これにより、芯材内で充填硬化剤が硬化して充填硬化部になったときに芯材が硬くなり、まくら木における補修された凹み部分の強度を高めることができる。 Further, in the sleeper repairing method, the number of cells of the core material may be 8 pieces / 25 mm or more.
According to this invention, it can suppress that the magnitude | size of each open cell of a core material becomes large too much, and the filling hardening | curing agent absorbed by the core material flows out from a core material.
In the above sleeper repair method, the viscosity of the filling curing agent may be 0.5 Pa · s or less.
According to this invention, the fluidity of the filling curing agent is increased, and the core material sufficiently absorbs the filling curing agent. Thereby, when a filling hardening agent hardens | cures in a core material and it becomes a filling hardening part, a core material becomes hard and the intensity | strength of the repaired dent part in a sleeper can be raised.

また、上記のまくら木の補修方法において、前記充填硬化剤の粘度が０．１Ｐａ・ｓ以上であってもよい。
この発明によれば、例えば長手方向に傾斜するようにまくら木を配置したときに、充填硬化剤が芯材から流れ出てしまうのを抑えることができる。 In the above sleeper repair method, the filling hardener may have a viscosity of 0.1 Pa · s or more.
According to this invention, for example, when the sleeper is arranged so as to be inclined in the longitudinal direction, it is possible to prevent the filling curing agent from flowing out of the core material.

本発明のまくら木の補修方法及びまくら木の補修構造によれば、まくら木における補修された凹み部分の強度を高めることができる。   According to the sleeper tree repair method and the sleeper tree repair structure of the present invention, the strength of the repaired dent portion in the sleeper tree can be increased.

本発明の一実施形態のまくら木の補修構造が用いられるまくら木の側面の断面図である。It is sectional drawing of the side surface of the sleeper tree in which the repair structure of the sleeper tree of one Embodiment of this invention is used. 同まくら木の要部の平面図である。It is a top view of the principal part of the pillow. 同まくら木の補修構造を示す側面の断面図である。It is sectional drawing of the side surface which shows the repair structure of the pillow. 本発明の一実施形態のまくら木の補修方法を説明するまくら木の側面の断面図である。It is sectional drawing of the side surface of the sleeper tree explaining the repair method of the sleeper tree of one Embodiment of this invention. 本発明の一実施形態のまくら木の補修方法を説明する押さえ板及びまくら木の一部を破断した平面図である。It is the top view which fractured | ruptured the press plate explaining the sleeper tree repair method of one Embodiment of this invention, and a part of sleeper tree. 本発明の一実施形態のまくら木の補修方法を説明するまくら木の側面の断面図である。It is sectional drawing of the side surface of the sleeper tree explaining the repair method of the sleeper tree of one Embodiment of this invention.

以下、本発明に係るまくら木の補修構造の一実施形態を、図１から図６を参照しながら説明する。なお、以下の全ての図面においては、図面を見やすくするため、各構成要素の厚さや寸法の比率を調整している。
本実施形態のまくら木の補修構造１は、図１及び図２に示す既設のまくら木５１におけるタイプレート５６の下方に生じた凹み部分５２を補修するものである。なお、図２ではまくら木５１のみを示す。凹み部分５２は、例えばタイプレート５６の端部の形状に対応して、平面視で矩形状に形成される。
まくら木５１は、例えば、エスロン ネオラバーＦＦＵ（登録商標、積水化学工業株式会社製）で形成することが好ましい。エスロン ネオラバーＦＦＵは、ガラス長繊維を所定の方向（例えばまくら木５１の長手方向）に引き揃えて熱硬化性樹脂中に埋設した熱硬化性樹脂発泡体である。なお、まくら木を木等で形成してもよい。
図示はしないが、まくら木５１は後述する軌条６１の長手方向に複数配置されている。 Hereinafter, an embodiment of a sleeper repair structure according to the present invention will be described with reference to FIGS. 1 to 6. In all the drawings below, the thicknesses and dimensions of the components are adjusted to make the drawings easy to see.
The sleeper tree repair structure 1 of the present embodiment repairs a recessed portion 52 generated below a tie plate 56 in the existing sleeper tree 51 shown in FIGS. 1 and 2. In FIG. 2, only the sleeper 51 is shown. The recessed portion 52 is formed in a rectangular shape in plan view corresponding to the shape of the end portion of the tie plate 56, for example.
The sleeper tree 51 is preferably formed of, for example, ESLON Neo Rubber FFU (registered trademark, manufactured by Sekisui Chemical Co., Ltd.). Eslon Neo Rubber FFU is a thermosetting resin foam in which long glass fibers are aligned in a predetermined direction (for example, the longitudinal direction of the sleeper 51) and embedded in the thermosetting resin. The sleeper tree may be formed of wood or the like.
Although not shown, a plurality of sleepers 51 are arranged in the longitudinal direction of the rail 61 described later.

まくら木５１の上面には、タイプレート５６が配置されている。タイプレート５６の上面には、軌条（レール）６１が配置されている。軌条６１は、タイプレート５６の貫通孔５６ａに挿入された一対の犬釘６２によりまくら木５１に固定されている。まくら木５１には、一対の犬釘６２により固定孔５３、５４が形成されている。一対の固定孔５３、５４のうち固定孔５３は、凹み部分５２の底面に形成されている。   A tie plate 56 is disposed on the upper surface of the sleeper tree 51. A rail (rail) 61 is disposed on the upper surface of the tie plate 56. The rail 61 is fixed to the sleeper 51 by a pair of dog nails 62 inserted into the through holes 56 a of the tie plate 56. Fixing holes 53 and 54 are formed in the sleeper tree 51 by a pair of dog nails 62. Of the pair of fixing holes 53, 54, the fixing hole 53 is formed on the bottom surface of the recessed portion 52.

図３に示すように、まくら木の補修構造１は、芯材１１と、耐摩耗板１６と、充填硬化部２１と、を備える。なお、図３における符号３４は、後述する埋栓３４に孔を明けたものである。
芯材１１は、日本工業規格、ＪＩＳ Ｋ ６４００−１：２００４の規定によるセル数が１３個／２５ｍｍ以下である発泡体（フォーム材料）で形成されている。また、芯材１１の前記規定によるセル数は８個／２５ｍｍ以上であることが好ましい。芯材１１は、ウレタンフォーム、ナイロンフォーム、メラミンフォーム等のオープンセル（連続孔）を有する樹脂系の発泡体で形成されている。発泡体は、連続気泡型であることが好ましい。切断加工のし易さ、取り扱いの容易さ、コスト等から、芯材１１はウレタンフォームで形成されることが好ましい。
芯材１１は、まくら木５１の凹み部分５２よりも小さい外形に形成され、凹み部分５２内に配置される。 As shown in FIG. 3, the sleeper repair structure 1 includes a core material 11, a wear-resistant plate 16, and a filling and hardening part 21. In addition, the code | symbol 34 in FIG. 3 has made the hole in the embedding plug 34 mentioned later.
The core material 11 is formed of a foam (foam material) having a number of cells of 13 cells / 25 mm or less as defined in Japanese Industrial Standard, JIS K 6400-1: 2004. Moreover, it is preferable that the cell number by the said prescription | regulation of the core material 11 is 8 pieces / 25mm or more. The core material 11 is formed of a resin-based foam having open cells (continuous pores) such as urethane foam, nylon foam, and melamine foam. The foam is preferably an open-cell type. The core material 11 is preferably formed of urethane foam from the viewpoint of ease of cutting processing, ease of handling, cost, and the like.
The core material 11 is formed in an outer shape smaller than the recessed portion 52 of the sleeper 51 and is disposed in the recessed portion 52.

耐摩耗板１６は、例えばガラスマットにポリエステル樹脂を含浸したＦＲＰ（Fiber Reinforced Plastics）で形成される。耐摩耗板１６は、厚さが１ｍｍ程度のものが好適に用いられる。耐摩耗板１６は、凹み部分５２の開口部５２ａに嵌まり込むように形成され、開口部５２ａに配置されている。
なお、耐摩耗板を鉄板で形成すると、後述するように樹脂で形成された充填硬化部２１と耐摩耗板との接着性が悪くなる。このため、施工（補修）後に充填硬化部２１から耐摩耗板が脱落する可能性がある。耐摩耗板が一対の軌条６１に接触すると、一対の軌条６１間が短絡する問題がある。耐摩耗板を一般的なゴム板で形成すると、ゴム板は柔らかいため、施工後に耐摩耗板の上面に凹凸が生じる可能性がある。この場合、タイプレート５６をまくら木５１に再度固定する際に、タイプレート５６とまくら木５１との間にがたつきが生じる可能性がある。このため、耐摩耗板１６はＦＲＰで形成されることが好ましい。 The wear-resistant plate 16 is made of, for example, FRP (Fiber Reinforced Plastics) in which a glass mat is impregnated with a polyester resin. The wear-resistant plate 16 having a thickness of about 1 mm is preferably used. The wear-resistant plate 16 is formed so as to fit into the opening 52a of the recessed portion 52, and is disposed in the opening 52a.
In addition, when an abrasion-resistant board is formed with an iron plate, the adhesiveness of the filling hardening part 21 formed with resin and an abrasion-resistant board will worsen so that it may mention later. For this reason, there is a possibility that the wear-resistant plate falls off from the filled and hardened portion 21 after construction (repair). When the wear-resistant plate contacts the pair of rails 61, there is a problem that the pair of rails 61 are short-circuited. When the wear-resistant plate is formed of a general rubber plate, the rubber plate is soft, so that the upper surface of the wear-resistant plate may be uneven after construction. In this case, rattling between the tie plate 56 and the sleeper tree 51 may occur when the tie plate 56 is fixed to the sleeper tree 51 again. For this reason, it is preferable that the abrasion resistant plate 16 is formed of FRP.

充填硬化部２１は、ポリエステル樹脂、ウレタン樹脂、エポキシ樹脂等で形成されている。充填硬化部２１は、硬化する前は充填硬化剤である。充填硬化剤は、主剤と硬化剤とを混ぜ合わせたものである。充填硬化部２１は、凹み部分５２内に収容され、凹み部分５２に芯材１１及び耐摩耗板１６を接着している。充填硬化剤が芯材１１のオープンセル内に吸収されて硬化することで、充填硬化部２１は、芯材１１のオープンセル内にも形成されている。   The filling / curing portion 21 is formed of a polyester resin, a urethane resin, an epoxy resin, or the like. The filling and curing unit 21 is a filling and curing agent before curing. The filling curing agent is a mixture of the main agent and the curing agent. The filling and hardening portion 21 is accommodated in the recessed portion 52, and the core material 11 and the wear resistant plate 16 are bonded to the recessed portion 52. The filling and curing part 21 is also formed in the open cell of the core material 11 by the filling and curing agent being absorbed and cured in the open cell of the core material 11.

充填硬化剤の粘度は特に限定されず、施工時の気温や作業時間、補修後の強度を考慮して適宜選択すればよい。ただし、芯材１１をウレタンフォームで形成した場合には、芯材１１への充填硬化剤の吸収性や流動性、及び作業時間等を考慮して、充填硬化剤の粘度が０．１Ｐａ・ｓ（パスカル秒）以上０．５Ｐａ・ｓ以下程度であることが好ましい。充填硬化部２１として、不飽和ポリエステル樹脂を用いることが好ましい。   The viscosity of the filling curing agent is not particularly limited, and may be appropriately selected in consideration of the temperature during construction, the working time, and the strength after repair. However, when the core material 11 is formed of urethane foam, the viscosity of the filling hardener is 0.1 Pa · s in consideration of the absorbability and fluidity of the filling hardener to the core material 11 and the working time. It is preferably about (Pascal second) or more and about 0.5 Pa · s or less. It is preferable to use an unsaturated polyester resin as the filling and curing part 21.

次に、既設のまくら木５１の凹み部分５２を補修する本実施形態のまくら木の補修方法について説明する。
作業者は、予め、図５に示すように凹み部分５２の開口部５２ａよりも大きい押さえ板３１を用意する。押さえ板３１の外面に、全面にわたりガムテープ３２を貼り付ける。このとき、押さえ板３１にガムテープ３２を重ね貼りしないようにする。ガムテープ３２を重ね貼りすると、押さえ板３１に貼るガムテープ３２の厚さが、押さえ板３１の外面の場所により厚くなったり薄くなったりして、ガムテープ３２が耐摩耗板１６に密着しないためである。 Next, the sleeper repair method of this embodiment for repairing the recessed portion 52 of the existing sleeper 51 will be described.
The operator prepares in advance a pressing plate 31 that is larger than the opening 52a of the recessed portion 52 as shown in FIG. A gum tape 32 is attached to the entire outer surface of the pressing plate 31. At this time, the gum tape 32 is not overlapped on the pressing plate 31. This is because when the gum tape 32 is overlaid, the thickness of the gum tape 32 to be affixed to the pressing plate 31 becomes thicker or thinner depending on the location of the outer surface of the pressing plate 31, and the gum tape 32 does not adhere to the wear resistant plate 16.

まくら木５１から犬釘６２を引き抜く。図示しない油圧ジャッキ等により、軌条６１を、例えば４０ｍｍ程度タイプレート５６から持ち上げた状態で保持する。タイプレート５６を軌条６１の長手方向に移動させ、タイプレート５６を軌条６１の長手方向に隣り合う一対のまくら木５１間に移動する。
まくら木５１の凹み部分５２内を、ウエス等で掃除する。固定孔５３の上端部に突起等がある場合には、この突起等をノミ等の切削工具を用いて適宜切削除去し、固定孔５３の上端部に図４に示す拡径部５３ａを形成する。ＦＲＰ等により、埋栓３４を形成する。拡径部５３ａの内周面に速硬性の接着剤を塗布し、接着剤が硬化する前に拡径部５３ａに埋栓３４を打ち込む。
なお、凹み部分５２内に固定孔５３が形成されていない場合には、埋栓３４を打ち込む工程は行わない。 Pull out the dog nail 62 from the pillow 51. The rail 61 is held in a state where it is lifted from the tie plate 56 by, for example, about 40 mm, by a hydraulic jack (not shown). The tie plate 56 is moved in the longitudinal direction of the rail 61, and the tie plate 56 is moved between a pair of sleepers 51 adjacent in the longitudinal direction of the rail 61.
The inside of the recessed portion 52 of the sleeper tree 51 is cleaned with a waste cloth or the like. If there is a protrusion or the like at the upper end of the fixing hole 53, the protrusion or the like is appropriately cut and removed by using a cutting tool such as a chisel to form the enlarged diameter portion 53a shown in FIG. . The embedding plug 34 is formed by FRP or the like. A fast-curing adhesive is applied to the inner peripheral surface of the enlarged diameter portion 53a, and the plug 34 is driven into the enlarged diameter portion 53a before the adhesive is cured.
If the fixing hole 53 is not formed in the recessed portion 52, the step of driving the plug 34 is not performed.

補修現場において、芯材１１を、芯材１１の原材料であるウレタンフォームから、凹み部分５２の形状に合わせて切り出す。耐摩耗板１６を、耐摩耗板１６の原材料であるＦＲＰの板から、凹み部分５２の開口部５２ａの形状に合わせて切り出す。   At the repair site, the core material 11 is cut out from the urethane foam which is the raw material of the core material 11 in accordance with the shape of the recessed portion 52. The wear-resistant plate 16 is cut out from the FRP plate, which is a raw material of the wear-resistant plate 16, according to the shape of the opening 52 a of the recessed portion 52.

次に、まくら木５１の凹み部分５２内に芯材１１を配置する（芯材配置工程）。ポリエステル樹脂に硬化剤を入れた充填硬化剤を攪拌する。
続いて、凹み部分５２内に充填硬化剤２１Ａを流し込む（硬化剤供給工程）。このとき、例えば芯材１１の上面まで充填硬化剤２１Ａを流し込む。凹み部分５２内の芯材１１をスクレーパ等で何度も押しつぶし、芯材１１に充填硬化剤２１Ａを吸収させる。
なお、硬化剤供給工程を行った後で芯材配置工程を行ってもよいし、芯材配置工程を行う前と芯材配置工程を行った後の両方で硬化剤供給工程を行ってもよい。 Next, the core material 11 is arrange | positioned in the recessed part 52 of the sleeper tree 51 (core material arrangement | positioning process). Stir the filled hardener with the hardener in the polyester resin.
Subsequently, the filling curing agent 21A is poured into the recessed portion 52 (curing agent supplying step). At this time, for example, the filling curing agent 21 </ b> A is poured into the upper surface of the core material 11. The core material 11 in the recessed portion 52 is crushed many times by a scraper or the like to cause the core material 11 to absorb the filling curing agent 21A.
In addition, after performing a hardening agent supply process, you may perform a core material arrangement | positioning process, and you may perform a hardening agent supply process both after performing a core material arrangement process and after performing a core material arrangement process. .

図５及び図６に示すように、凹み部分５２の開口部５２ａに耐摩耗板１６を嵌まり込ませる（耐摩耗板配置工程）。なお、図５には後述する保持機構３６は示していない。
次に、耐摩耗板１６上に押さえ板３１を載せる。万力等の保持機構３６により、押さえ板３１とまくら木５１とを上下方向に挟んだ状態で固定する。この状態で、例えば１０分以上養生し、充填硬化剤２１Ａを硬化させて充填硬化部２１にする（硬化工程）。 As shown in FIGS. 5 and 6, the wear resistant plate 16 is fitted into the opening 52 a of the recessed portion 52 (wear resistant plate arranging step). Note that FIG. 5 does not show a holding mechanism 36 described later.
Next, the pressing plate 31 is placed on the wear resistant plate 16. A holding mechanism 36 such as a vise fixes the pressing plate 31 and the sleeper 51 in a state of being sandwiched in the vertical direction. In this state, for example, curing is performed for 10 minutes or more, and the filling curing agent 21A is cured to form the filling and curing unit 21 (curing step).

押さえ板３１及びまくら木５１から、保持機構３６を取外す。耐摩耗板１６から押さえ板３１を取外す。このとき、耐摩耗板１６と押さえ板３１との間にスクレーパ等を差し込み、耐摩耗板１６から押さえ板３１をはがしてもよい。
タイプレート５６を、まくら木５１上の元の位置に戻す。タイプレート５６上に軌条６１を降ろす。埋栓３４に犬釘６２を打込むための下穴を形成する。一対の犬釘６２を打込んで、まくら木５１に軌条６１を固定する。
以上の工程で、まくら木の補修方法の全工程が終了する。
なお、犬釘６２に代えて、ネジ釘を用いてもよい。 The holding mechanism 36 is removed from the pressing plate 31 and the sleeper 51. The presser plate 31 is removed from the wear resistant plate 16. At this time, a scraper or the like may be inserted between the wear resistant plate 16 and the pressing plate 31 and the pressing plate 31 may be peeled off from the wear resistant plate 16.
The tie plate 56 is returned to the original position on the sleeper tree 51. Lower the rail 61 on the tie plate 56. A pilot hole for driving the dog nail 62 into the embedding plug 34 is formed. A pair of dog nails 62 is driven to fix the rail 61 to the sleeper 51.
With the above steps, all steps of the sleeper repair method are completed.
A screw nail may be used instead of the dog nail 62.

以上説明したように、本実施形態のまくら木の補修方法及びまくら木の補修構造１によれば、芯材１１のセル数が１３個／２５ｍｍ以下であるため、芯材の各オープンセルの大きさが大きくなり、充填硬化剤２１Ａを芯材１１が十分に吸収する。したがって、芯材１１が押さえ板３１に触れる面積は小さくなり、接着面積は大きくなる。さらに、芯材１１内で充填硬化剤２１Ａが硬化して充填硬化部２１になったときに芯材１１が硬くなり、まくら木５１における補修された凹み部分５２の強度を高めることができる。
芯材１１のセル数が８個／２５ｍｍ以上であることで、たとえ、まくら木５１がまくら木５１の長手方向に傾斜するように敷設されていても、芯材１１の各オープンセルの大きさが大きくなり過ぎて、芯材１１に吸収させた充填硬化剤２１Ａが芯材１１から流れ出てしまうのを抑えることができる。 As described above, according to the sleeper tree repair method and sleeper tree repair structure 1 of the present embodiment, the number of cells of the core material 11 is 13 pieces / 25 mm or less. The core material 11 sufficiently absorbs the filling curing agent 21A. Therefore, the area where the core material 11 touches the holding plate 31 is reduced, and the adhesion area is increased. Furthermore, the core material 11 becomes hard when the filling and curing agent 21 </ b> A is cured in the core material 11 to become the filled and cured portion 21, and the strength of the repaired recessed portion 52 in the sleeper 51 can be increased.
Since the number of cells of the core material 11 is 8 pieces / 25 mm or more, even if the sleeper tree 51 is laid so as to be inclined in the longitudinal direction of the sleeper tree 51, the size of each open cell of the core material 11 is large. Therefore, it is possible to prevent the filling curing agent 21 </ b> A absorbed in the core material 11 from flowing out of the core material 11.

充填硬化剤２１Ａの粘度が０．５Ｐａ・ｓ以下であるため、充填硬化剤２１Ａの流動性が高まり、芯材１１が充填硬化剤２１Ａを十分に吸収する。これにより、芯材１１内で充填硬化剤２１Ａが硬化して充填硬化部２１になったときに芯材１１が硬くなり、まくら木５１における補修された凹み部分５２の強度を高めることができる。
充填硬化剤２１Ａの粘度が０．１Ｐａ・ｓ以上であるため、例えば長手方向に傾斜するようにまくら木５１を配置したときに、充填硬化剤２１Ａが芯材１１から流れ出てしまうのを抑えることができる。これにより、充填硬化剤２１Ａが無駄になるのを抑制するとともに、補修の作業効率を向上させることができる。 Since the viscosity of the filling curing agent 21A is 0.5 Pa · s or less, the fluidity of the filling curing agent 21A is enhanced, and the core material 11 sufficiently absorbs the filling curing agent 21A. Thereby, the core material 11 becomes hard when the filling and curing agent 21 </ b> A is cured in the core material 11 to become the filled and hardened portion 21, and the strength of the repaired recessed portion 52 in the sleeper 51 can be increased.
Since the viscosity of the filling curing agent 21A is 0.1 Pa · s or more, for example, when the sleeper 51 is disposed so as to be inclined in the longitudinal direction, it is possible to suppress the filling curing agent 21A from flowing out of the core material 11. it can. As a result, it is possible to suppress the filling curing agent 21A from being wasted and improve the work efficiency of repair.

芯材１１に充填硬化剤２１Ａを吸収させることで、前述の特許文献２のように充填硬化剤２１Ａが凹み部分５２から流れ出ないようにするための枠材を用いる必要がない。凹み部分５２の開口部５２ａに耐摩耗板１６を嵌まり込ませた状態で充填硬化剤２１Ａを硬化させるため、充填硬化剤２１Ａが硬化した後で、サンディングにより不要な充填硬化部２１を除去する必要がない。
サンディングが不要なことで、軌条６１を大きく上げ下げする必要がなくなり、補修作業が容易になる。 By making the core material 11 absorb the filling curing agent 21A, it is not necessary to use a frame material for preventing the filling curing agent 21A from flowing out of the recessed portion 52 as in Patent Document 2 described above. In order to cure the filling curing agent 21A in a state where the wear-resistant plate 16 is fitted in the opening 52a of the recessed portion 52, the unnecessary filling curing portion 21 is removed by sanding after the filling curing agent 21A is cured. There is no need.
By eliminating the need for sanding, it is not necessary to raise and lower the rail 61 greatly, and repair work is facilitated.

芯材１１として凹凸に追従できる軟質な素材を用いるため、凹み部分５２内に凹凸があってもその形状に合わせて芯材１１が変形し、本実施形態のまくら木の補修方法を容易に行うことができる。
芯材１１は容易に切断できるため、予め凹み部分５２の形状を測って芯材を加工しておく必要がなく、補修現場で芯材１１の切断を行うことができる。したがって、まくら木の補修方法を行うのに要する作業日数を短縮することができる。 Since a soft material that can follow the unevenness is used as the core material 11, the core material 11 is deformed according to the shape even if there is an unevenness in the recessed portion 52, and the sleeper repair method of this embodiment is easily performed. Can do.
Since the core material 11 can be easily cut, it is not necessary to measure the shape of the recessed portion 52 in advance to process the core material, and the core material 11 can be cut at the repair site. Therefore, the number of work days required for performing the sleeper repair method can be shortened.

以上、本発明の一実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の構成の変更、組み合わせ、削除等も含まれる。
例えば、前記実施形態では、芯材１１のセル数は８／２５ｍｍ以上でなくてもよい。
充填硬化剤２１Ａの粘度は、０．５Ｐａ・ｓよりも大きくてもよいし、０．１Ｐａ・ｓよりも小さくてもよい。 As mentioned above, although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and modifications, combinations, and deletions within a scope that does not depart from the gist of the present invention. Etc. are also included.
For example, in the said embodiment, the number of cells of the core material 11 may not be 8/25 mm or more.
The viscosity of the filling curing agent 21A may be larger than 0.5 Pa · s or smaller than 0.1 Pa · s.

１ まくら木の補修構造
１１ 芯材
１６ 耐摩耗板
２１ 充填硬化部
２１Ａ 充填硬化剤
５１ まくら木
５２ 凹み部分
５２ａ 開口部
５６ タイプレート DESCRIPTION OF SYMBOLS 1 Repair structure of sleeper 11 Core material 16 Wear-resistant board 21 Filling hardening part 21A Filling hardening agent 51 Sleeper 52 Recessed part 52a Opening part 56 Tie plate

Claims (5)

既設のまくら木におけるタイプレートの下方に生じた凹み部分を補修するまくら木の補修方法であって、
前記まくら木の前記凹み部分内に、ＪＩＳ Ｋ ６４００−１の規定によるセル数が１３個／２５ｍｍ以下である発泡体で形成された芯材を配置し、
前記凹み部分内に充填硬化剤を流し込み、
前記凹み部分の開口部に耐摩耗板を嵌まり込ませて前記充填硬化剤を硬化させることを特徴とするまくら木の補修方法。 A method of repairing a sleeper tree that repairs a dent portion formed below a tie plate in an existing sleeper tree,
A core material made of a foam having a cell number of 13/25 mm or less according to JIS K 6400-1 is disposed in the recessed portion of the sleeper tree,
Pour the filling hardener into the recessed portion,
A sleeper repairing method, wherein a wear-resistant plate is fitted into the opening of the recessed portion to cure the filling curing agent. 前記芯材の前記セル数が８個／２５ｍｍ以上であることを特徴とする請求項１に記載のまくら木の補修方法。   The sleeper repair method according to claim 1, wherein the number of cells of the core material is 8 pieces / 25 mm or more. 前記充填硬化剤の粘度が０．５Ｐａ・ｓ以下であることを特徴とする請求項１又は２に記載のまくら木の補修方法。   3. The sleeper repair method according to claim 1, wherein the viscosity of the filling curing agent is 0.5 Pa · s or less. 前記充填硬化剤の粘度が０．１Ｐａ・ｓ以上であることを特徴とする請求項１から３のいずれか一項に記載のまくら木の補修方法。   The sleeper repair method according to any one of claims 1 to 3, wherein the viscosity of the filling curing agent is 0.1 Pa · s or more. 既設のまくら木におけるタイプレートの下方に生じた凹み部分を補修するまくら木の補修構造であって、
ＪＩＳ Ｋ ６４００−１の規定によるセル数が１３個／２５ｍｍ以下である発泡体で形成され、前記凹み部分内に配置された芯材と、
前記凹み部分の開口部に嵌まり込むように配置された耐摩耗板と、
前記凹み部分内に収容された充填硬化部と、
を備えることを特徴とするまくら木の補修構造。 A repair structure for a sleeper tree that repairs a dent generated below a tie plate in an existing sleeper tree,
A core material formed of a foam having a cell number of 13/25 mm or less according to the provisions of JIS K 6400-1, and disposed in the recessed portion;
A wear-resistant plate arranged to fit into the opening of the recessed portion;
A filled and hardened portion housed in the recessed portion;
A sleeper repair structure characterized by comprising:
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JP2000038705A (en) * 1998-07-23 2000-02-08 Sekisui Chem Co Ltd Repairing method of jointing part of tie
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