WO2010113807A1 - Noise insulation device for rail - Google Patents
Noise insulation device for rail Download PDFInfo
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- WO2010113807A1 WO2010113807A1 PCT/JP2010/055405 JP2010055405W WO2010113807A1 WO 2010113807 A1 WO2010113807 A1 WO 2010113807A1 JP 2010055405 W JP2010055405 W JP 2010055405W WO 2010113807 A1 WO2010113807 A1 WO 2010113807A1
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- rail
- cover
- sound insulation
- sound
- insulation cover
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
Definitions
- the present invention relates to a rail soundproofing device for preventing noise generated from railroad rails.
- the soundproofing device includes three first to third sleepers S (only the second sleeper shown in the figure) that fix the rail R, from one side in the rail length direction to the other.
- the first sound insulation cover 81 is passed to the first and second sleepers S
- the second sound insulation cover 82 is passed to the second and third sleepers S.
- the length of the first sound insulation cover 81 is formed according to the pitch of the second sleeper S
- the length of the second sound insulation cover 82 is formed according to the pitch of the second and third sleepers S.
- the first sound insulation cover 81 and the second sound insulation cover 82 are provided at the required portions of the rail surface in a state in which the butted portions 83 are formed between the opposing end surfaces of the first sound insulation cover 81 and the second sound insulation cover 82. It is what is covered.
- one type of sound insulation cover 81, 82 formed in a certain length according to a small sleeper pitch is also prepared.
- the opposing end surfaces of the first sound insulating cover 81 and the second sound insulating cover 82 do not face each other, and a gap 84 may be formed between the end surfaces. It was. If it does so, noise will leak from the clearance gap 84 and a noise prevention effect will be impaired.
- An object of the present invention is to provide a rail soundproofing device that can effectively prevent noise by using a single type of soundproofing cover having the same length, without the need to prepare many soundproofing covers having different lengths.
- three first to third sleepers fixing the rail are sequentially arranged from one side to the other side in the rail length direction, and the first and second sleepers are arranged.
- the second sound insulation cover is passed to the second and third sleepers, the length of each sound insulation cover is constant, and the pitch and second of the first and second sleepers are passed.
- the first sound insulation in a state where the opposite ends of the first sound insulation cover and the second sound insulation cover overlap each other over the required width on the second sleeper.
- the cover and the second sound insulation cover are covered with a required portion of the rail surface.
- one type of sound insulation cover having a length larger than the sleeper pitch is used, and the opposite ends of two adjacent sound insulation covers are overlapped by the length of the length. Therefore, the entire required portion of the rail surface can be covered without generating a gap between the opposing end surfaces of two adjacent sound insulation covers.
- the rail is composed of a head, an abdomen, and a bottom that are successively connected from the top to the bottom, and each sound insulation cover is attached to the inner surface of the cover body that extends from the upper end of the abdomen side to the upper end of the bottom part, and the inner surface of the cover body.
- the sound absorbing material is preferably made of foamed resin.
- the resin include polyethylene resin, EPDM, polypropylene resin, and polyvinyl chloride resin.
- the foaming ratio is 10 to 40, particularly, the foaming ratio is 15 to 30 from the viewpoint of soundproofing and workability. Further, it is preferable that the open cell ratio is 90% or more and the compressive stress (25%) is 3 to 5 kPa.
- the rail consists of a head, abdomen, and bottom that are successively connected from top to bottom. If the bottom cover is formed, a large area from the abdomen side surface to the bottom bottom surface of the rail is covered with the sound insulation cover, so that a further noise prevention effect can be expected.
- the present invention it is not necessary to prepare a large number of sound insulation covers having different lengths, and a sound insulation device for a rail that can effectively prevent noise by one type of sound insulation cover having the same length is provided.
- FIG. 2 It is a graph which shows the result of having simulated the noise reduction effect based on the data shown in the said FIG. 8 and FIG. It is a side view equivalent to FIG. 2 which shows a prior art example. It is a side view equivalent to FIG. 2 which shows another prior art example.
- the rail R is composed of a head portion Rt, an abdominal portion Rw, and a bottom portion Rb that are successively connected from top to bottom.
- a pair of left and right sound insulation covers 11 are covered from the left and right sides of the abdomen Rw to the upper surface of the bottom Rb. Both sound-insulating covers 11 have the same structure, although the left and right directions are opposite.
- Each sound insulation cover 11 includes a steel plate cover main body 11A spanned from the upper end of the side surface of the abdomen Rw to the front end of the bottom Rb, and a thin-walled vibration damping resin damping material 21 attached to the inner surface of the cover main body 11A and
- the sound absorbing material 22 is made of a thick foamed resin.
- FIG. 2 shows the installation state of the sound insulation cover 11.
- Three first to third sleepers S1 to S3 are sequentially laid from the left side to the right side, and a rail R extending in the left-right direction is supported by the three first to third sleepers S1 to S3.
- the rail R is fixed by a fastener T.
- the first sound insulation cover 31 is passed to the first and second sleepers S1, S2, and the second sound insulation cover 32 is passed to the second and third sleepers S2, S3.
- the first pitch P1 of the first and second sleepers S1, S2 and the second pitch P2 of the second and third sleepers S2, S3 are the same or larger than the former.
- the length L of the first sound insulation cover 31 and the second sound insulation cover 32 is the same. These sizes have a relationship of P1 ⁇ P2 ⁇ L.
- an overlapping portion 33 is provided so as to overlap each other over the required width B.
- the width B of the overlapping portion 33 is preferably about 20 to 80 mm, more preferably 50 mm in consideration of variations in sleeper pitch and soundproofing performance. If it is less than 20 mm, if there is a large variation in the sleeper pitch, the variation width may be larger than the overlapping portion 33 and a gap may be formed, and the sound absorbing effect is reduced. On the other hand, if it exceeds 80 mm, since the overlapping portion 33 is large, it is necessary to largely remove the sound absorbing material 22, and the sound absorbing effect is reduced.
- each sound insulation so that only the cover body (not shown) of each sound insulation cover 31 and 32 is overlapped at the right end portion of the first sound insulation cover 31 and the overlapping portion 33 of the second sound insulation cover 32.
- the damping material 21 and the sound absorbing material 22 of the covers 31 and 32 are removed.
- notches 31a and 32a for avoiding interference with the fastener T are formed in the right end portion of the first sound insulation cover 31 and the left end portion of the second sound insulation cover 32, respectively.
- FIG. 3 shows a modification of the sound insulation cover 41.
- the sound insulation cover 41 according to this modification includes a side cover 42 and a bottom cover 43 that are integrally formed as a whole.
- the side cover 42 has basically the same structure as the sound insulation cover 41 shown in FIG. 1, and is attached to the inner surface of the steel plate side cover main body 42A that extends from the upper end of the side surface of the abdomen Rw to the upper end of the bottom surface Rb.
- the vibration damping resin damping material 51 and the foamed resin sound absorbing material 52 are formed.
- the bottom cover 43 includes a bottom cover body 43A made of L-shaped steel plate having an upper end connected to the lower end of the side cover body 42A, and a damping resin damping material 53 attached to the upper surface of the horizontal portion.
- the sound absorbing material 54 is made of foamed resin.
- the measurement method is as follows. A sleeper span 600mm, 50N rail R is vibrated with pink noise output from a vibration speaker. In order to prevent the influence of the direct sound from the vibration speaker, a microphone was placed at a location 2 m away from the excitation point and 100 mm from the abdomen Rw of the rail R, and the noise level was measured.
- the soundproofing effect is obtained by subtracting the sound pressure level of the rail R with the cover from the sound pressure level of the bare rail R without the cover on the rail R.
- FIG. 5 and FIG. 6 show the measurement results.
- FIG. 5 shows the total sound pressure average value between 400 and 4 kHz
- FIG. 6 shows the sound pressure for each frequency between 400 and 4 kHz.
- a is when there is no gap between the covers shown in FIG. 7
- b is when there is a gap between the covers shown in FIG. 8
- c is the end of the cover as shown in FIG.
- d indicates a case where the bottom surface of the rail R is covered with a cover as shown in FIG. 3 in addition to the cover surface of the cover indicated by c.
- the sound pressure reduction effect is the lowest when there is a gap between the covers.
- the sound pressure reduction effect is even higher when the bottom surface of the rail R is covered with a cover.
- the cover body is not limited to a steel plate, but may be a resin.
- the cover body in the case of abutting between the covers without a gap, there is a possibility that a gap is formed due to thermal contraction of the rail, and in this case, the sound pressure reduction effect may be reduced.
- FIG. 7 shows the test conditions.
- FIG. 8 shows measurement data of the noise reduction effect in the laboratory by the resin having the conditions shown in FIG.
- FIG. 9 shows noise measurement data when an actual train passes using a resin under the same conditions.
- FIG. 10 shows the result of simulating the sound pressure lowering effect by the above-mentioned various resins from the sound pressure level when passing through the train using the data shown in FIGS. 8 and 9. 8 to 10, it is understood that the soundproofing performance of the sound absorbing material having a bubble diameter of 0.5 to 1 mm of polyethylene resin and a foaming ratio of 30 is good.
- a notch used as a relief for the fastener may be formed on the construction site by actual matching, or may be formed in advance. According to the actual matching, the sound insulation cover can be applied to the rail without being affected by the change in the pitch of the sleepers. Furthermore, since the sound insulation cover can be prepared without being caught by the notch and the sound insulation cover having a length equal to or greater than the sleeper pitch can be easily used, the workability can be improved.
- the sound insulation cover carried into the construction site is wound in a roll shape, it becomes easy to handle the roll sound insulation cover.
- urethane foam or the like may be injected into the gap between the overlapping portion 33 of the sound insulation covers 33 and the rail R (where the sound absorbing material 22 is omitted), and sound absorption is achieved by filling the gap. The effect can be increased.
- the rail soundproofing device does not require the preparation of a large number of sound insulation covers having different lengths, and is suitable for achieving effective prevention of noise by one type of sound insulation cover having the same length.
- S1-S3 sleepers 31 First sound insulation cover 32 Second sound insulation cover L Cover length P1, P2 Sleeper pitch R rail
Abstract
A noise insulation device for a rail, eliminating the need for a large number of noise insulation covers having different lengths and effectively isolating noise using one type of noise insulation covers having the same length.
Three first to third rail ties (S1-S3) to which a rail (R) is fixed are arranged in sequence from one side to the other side in the length direction of the rail. A first noise insulation cover (31) is laid across the first and second rail ties (S1, S2), and a second noise insulation cover (32) is laid across the second and third noise insulation rail ties (S2, S3). The length (L) of the noise insulation covers (31, 32) is fixed and is set to be greater than the pitch (P1) between the first and second rail ties (S1, S2) and than the pitch (P2) between second and third rail ties (S2, S3). The first noise insulation cover (31) and the second noise insulation cover (32) are, on the second rail tie (S2), placed over required portions of the surface of the rail with facing ends of the first noise insulation cover (31) and the second noise insulation cover (32) overlapped on each other over a required width.
Description
この発明は、鉄道のレールから発生する騒音を防止するレールの防音装置に関する。
The present invention relates to a rail soundproofing device for preventing noise generated from railroad rails.
に関する。
About.
この種の防音装置としては、例えば、特許文献１に記載されているものが知られている。この防音装置は、図１１に示されているように、レールRを固定している３つの第１～第３枕木S（図示は第２枕木のみ）が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木Sに第１遮音カバー81が渡されるとともに、第２および第３枕木Sに第２遮音カバー82が渡されており、第１および第２枕木Sのピッチに合わせて第１遮音カバー81の長さが形成されるとともに、第２および第３枕木Sのピッチに合わせて第２遮音カバー82の長さが形成されており、第２枕木S上において、第１遮音カバー81および第２遮音カバー82の相対する端面同士に突合せ部83を形成した状態で、第１遮音カバー81および第２遮音カバー82がレール表面の所要部分に被覆されているものである。
As this type of soundproofing device, for example, the one described in Patent Document 1 is known. As shown in FIG. 11, the soundproofing device includes three first to third sleepers S (only the second sleeper shown in the figure) that fix the rail R, from one side in the rail length direction to the other. The first sound insulation cover 81 is passed to the first and second sleepers S, and the second sound insulation cover 82 is passed to the second and third sleepers S. The length of the first sound insulation cover 81 is formed according to the pitch of the second sleeper S, and the length of the second sound insulation cover 82 is formed according to the pitch of the second and third sleepers S. On the two sleepers S, the first sound insulation cover 81 and the second sound insulation cover 82 are provided at the required portions of the rail surface in a state in which the butted portions 83 are formed between the opposing end surfaces of the first sound insulation cover 81 and the second sound insulation cover 82. It is what is covered.
この防音装置では、枕木ピッチにはバラツキがあり、そのばらつきに合わせて長さの異なる遮音カバー81、82を多数準備する必要があった。
In this soundproofing device, there is a variation in the sleeper pitch, and it is necessary to prepare a large number of sound insulation covers 81 and 82 having different lengths according to the variation.
この煩雑さを避けるために、小さめの枕木ピッチに合わせて一定の長さに形成した１種類の遮音カバー81、82を準備することも行われている。この場合、図１２に示すように、第２枕木S上において、第１遮音カバー81および第２遮音カバー82の相対する端面同士が突き合わされないで、その端面間に隙間84が生じることがあった。そうすると、その隙間84から騒音が漏れ出ることとなって、騒音防止効果が損なわれる。
In order to avoid this complexity, one type of sound insulation cover 81, 82 formed in a certain length according to a small sleeper pitch is also prepared. In this case, as shown in FIG. 12, on the second sleeper S, the opposing end surfaces of the first sound insulating cover 81 and the second sound insulating cover 82 do not face each other, and a gap 84 may be formed between the end surfaces. It was. If it does so, noise will leak from the clearance gap 84 and a noise prevention effect will be impaired.
この発明の目的は、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止できるレールの防音装置を提供することにある。
An object of the present invention is to provide a rail soundproofing device that can effectively prevent noise by using a single type of soundproofing cover having the same length, without the need to prepare many soundproofing covers having different lengths.
この発明によるレールの防音装置は、レールを固定している３つの第１～第３枕木が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木に第１遮音カバーが渡されるとともに、第２および第３枕木に第２遮音カバーが渡されており、各遮音カバーの長さが、一定でありかつ第１および第２枕木のピッチ並びに第２および第３枕木のピッチのいずれよりも大きく形成されており、第２枕木上において、第１遮音カバーおよび第２遮音カバーの相対する端部同士が所要幅にわたって重ね合わされた状態で、第１遮音カバーおよび第２遮音カバーがレール表面の所要部分に被覆されているものである。
In the rail soundproofing device according to the present invention, three first to third sleepers fixing the rail are sequentially arranged from one side to the other side in the rail length direction, and the first and second sleepers are arranged. The second sound insulation cover is passed to the second and third sleepers, the length of each sound insulation cover is constant, and the pitch and second of the first and second sleepers are passed. And the first sound insulation in a state where the opposite ends of the first sound insulation cover and the second sound insulation cover overlap each other over the required width on the second sleeper. The cover and the second sound insulation cover are covered with a required portion of the rail surface.
この発明によるレールの防音装置では、枕木ピッチよりも大きい長さをもつ１種類の遮音カバーを用いて、その長さの長い分だけ、隣り合う２つの遮音カバーの相対する端部同士を重ね合わせているため、隣り合う２つの遮音カバーの相対する端面間に隙間を生じさせることなく、レール表面の所要部分の全体を被覆することができる。
In the rail soundproofing device according to the present invention, one type of sound insulation cover having a length larger than the sleeper pitch is used, and the opposite ends of two adjacent sound insulation covers are overlapped by the length of the length. Therefore, the entire required portion of the rail surface can be covered without generating a gap between the opposing end surfaces of two adjacent sound insulation covers.
さらに、レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面上端から底部上面先端にかけて渡されているカバー本体と、カバー本体の内面に貼り付けられている吸音材とよりなり、第１遮音カバーおよび第２遮音カバーの重ね合わされた部分において、各遮音カバーのカバー本体のみが重ね合わされるように、各遮音カバーの吸音材が除去されていると、遮音カバーの重ね合わせ部において、比較的厚みのある吸音材を邪魔させることなく、比較的厚みの薄いカバー本体だけを作業性良く重ね合わせることができる。
Furthermore, the rail is composed of a head, an abdomen, and a bottom that are successively connected from the top to the bottom, and each sound insulation cover is attached to the inner surface of the cover body that extends from the upper end of the abdomen side to the upper end of the bottom part, and the inner surface of the cover body. When the sound absorbing material of each sound insulating cover is removed so that only the cover body of each sound insulating cover is overlapped in the overlapped portion of the first sound insulating cover and the second sound insulating cover, In the overlapping portion of the sound insulation cover, only a relatively thin cover body can be overlapped with good workability without interfering with a relatively thick sound absorbing material.
吸音材は、樹脂を発泡させたものであることが好ましい。樹脂としては、ポリエチレン樹脂、ＥＰＤＭ、ポリプロピレン樹脂、ポリ塩化ビニル樹脂が挙げられる。
The sound absorbing material is preferably made of foamed resin. Examples of the resin include polyethylene resin, EPDM, polypropylene resin, and polyvinyl chloride resin.
上記樹脂のうち、とくに、気泡径が１ｍｍ以下かつポリエチレン発泡体を使用すれば、列車通過時の騒音レベルを大きく左右する５００～３．１５ｋＨｚでの騒音低減効果が大である。
Of the above resins, especially when a foam is used with a bubble diameter of 1 mm or less, the noise reduction effect at 500 to 3.15 kHz, which greatly affects the noise level when passing through a train, is great.
発泡体の仕様として、防音性、施工性の観点から、発泡倍率：１０～４０、とくに、発泡倍率：１５～３０であることが好ましい。さらに、連泡率：９０％以上、圧縮応力（２５％）：３～５ｋＰａであることが好ましい。
As the specification of the foam, it is preferable that the foaming ratio is 10 to 40, particularly, the foaming ratio is 15 to 30 from the viewpoint of soundproofing and workability. Further, it is preferable that the open cell ratio is 90% or more and the compressive stress (25%) is 3 to 5 kPa.
また、レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面および底部上面に被覆されている側面カバーと、側面カバーの下端に連なってレール底面に被覆されている底面カバーとよりなると、レールの腹部側面から底部下面にかけての広い面積が遮音カバーによって被覆されるから、一層の騒音防止効果が期待できる。
The rail consists of a head, abdomen, and bottom that are successively connected from top to bottom. If the bottom cover is formed, a large area from the abdomen side surface to the bottom bottom surface of the rail is covered with the sound insulation cover, so that a further noise prevention effect can be expected.
この発明によれば、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止できるレールの防音装置が提供される。
According to the present invention, it is not necessary to prepare a large number of sound insulation covers having different lengths, and a sound insulation device for a rail that can effectively prevent noise by one type of sound insulation cover having the same length is provided.
図１を参照すると、レールRは、上から下にかけ順次連なる頭部Rt、腹部Rwおよび底部Rbよりなる。
Referring to FIG. 1, the rail R is composed of a head portion Rt, an abdominal portion Rw, and a bottom portion Rb that are successively connected from top to bottom.
腹部Rw左右両面から底部Rb上面にかけて、左右一対の遮音カバー11が被覆されている。両遮音カバー11は、左右の向きは逆であるが、同一構造のものである。
A pair of left and right sound insulation covers 11 are covered from the left and right sides of the abdomen Rw to the upper surface of the bottom Rb. Both sound-insulating covers 11 have the same structure, although the left and right directions are opposite.
各遮音カバー11は、腹部Rw側面上端から底部Rb上面先端に掛け渡されている鋼板製カバー本体11Aと、カバー本体11Aの内面に貼り付けられている薄肉状制振樹脂製制振材21および厚肉状発泡樹脂製吸音材22とよりなる。
Each sound insulation cover 11 includes a steel plate cover main body 11A spanned from the upper end of the side surface of the abdomen Rw to the front end of the bottom Rb, and a thin-walled vibration damping resin damping material 21 attached to the inner surface of the cover main body 11A and The sound absorbing material 22 is made of a thick foamed resin.
図２に、上記遮音カバー11の設置状態が示されている。３つの第１～第３枕木S1～S3が、左側から右側にかけて、順次敷設され、これに、左右方向にのびたレールRが支持されている。各枕木S1～S3上において、レールRは、締結具Tによって固定されている。
FIG. 2 shows the installation state of the sound insulation cover 11. Three first to third sleepers S1 to S3 are sequentially laid from the left side to the right side, and a rail R extending in the left-right direction is supported by the three first to third sleepers S1 to S3. On each sleeper S1 to S3, the rail R is fixed by a fastener T.
第１および第２枕木S1、S2に第１遮音カバー31が渡されるとともに、第２および第３枕木S2、S3に第２遮音カバー32が渡されている。
The first sound insulation cover 31 is passed to the first and second sleepers S1, S2, and the second sound insulation cover 32 is passed to the second and third sleepers S2, S3.
第１および第２枕木S1、S2の第１ピッチP1と、第２および第３枕木S2、S3の第２ピッチP2とは、同一または前者よりも後者が大である。第１遮音カバー31および第２遮音カバー32の長さLは、同一である。これらの大きさは、P1≦P2＜Lの関係になっている。
The first pitch P1 of the first and second sleepers S1, S2 and the second pitch P2 of the second and third sleepers S2, S3 are the same or larger than the former. The length L of the first sound insulation cover 31 and the second sound insulation cover 32 is the same. These sizes have a relationship of P1 ≦ P2 <L.
第２枕木S2上において、第１遮音カバー31の右端部および第２遮音カバー32の左端部には、互いに所要幅Bにわたって重ね合わされた重なり部33が設けられている。この重なり部33の幅Bは、枕木ピッチのバラツキ、防音性能を考慮すると、20～80mm程度であることが好ましく、より好ましくは50mmである。20mm未満であると枕木ピッチに大きなバラツキがあると、バラツキ幅が重なり部33よりも大きくなってしまい隙間があくおそれがあり、吸音効果が低下する。また、80mm超過であると、重なり部33が大きいため、吸音材22を大きく除去する必要があり、吸音効果が低下する。
On the second sleeper S2, on the right end portion of the first sound insulation cover 31 and the left end portion of the second sound insulation cover 32, an overlapping portion 33 is provided so as to overlap each other over the required width B. The width B of the overlapping portion 33 is preferably about 20 to 80 mm, more preferably 50 mm in consideration of variations in sleeper pitch and soundproofing performance. If it is less than 20 mm, if there is a large variation in the sleeper pitch, the variation width may be larger than the overlapping portion 33 and a gap may be formed, and the sound absorbing effect is reduced. On the other hand, if it exceeds 80 mm, since the overlapping portion 33 is large, it is necessary to largely remove the sound absorbing material 22, and the sound absorbing effect is reduced.
さらに、詳しく図示しないが、第１遮音カバー31の右端部および第２遮音カバー32の重なり部33において、各遮音カバー31、32のカバー本体（図示略）のみが重ね合わされるように、各遮音カバー31、32の制振材21および吸音材22が除去されている。
Further, although not shown in detail, each sound insulation so that only the cover body (not shown) of each sound insulation cover 31 and 32 is overlapped at the right end portion of the first sound insulation cover 31 and the overlapping portion 33 of the second sound insulation cover 32. The damping material 21 and the sound absorbing material 22 of the covers 31 and 32 are removed.
また、第１遮音カバー31の右端部および第２遮音カバー32の左端部には、締結具Tとの干渉を避けるための切欠31a、32aがそれぞれ形成されている。
Further, notches 31a and 32a for avoiding interference with the fastener T are formed in the right end portion of the first sound insulation cover 31 and the left end portion of the second sound insulation cover 32, respectively.
図３に、遮音カバー41の変形例が示されている。この変形例による遮音カバー41は、全体を一体的に形成されている側面カバー42および底面カバー43よりなる。
FIG. 3 shows a modification of the sound insulation cover 41. The sound insulation cover 41 according to this modification includes a side cover 42 and a bottom cover 43 that are integrally formed as a whole.
側面カバー42は、図１に示す遮音カバー41と基本的に同一構造のもので、腹部Rw側面上端から底部Rb上面先端にかけて渡されている鋼板製側面カバー本体42Aと、これの内面に貼り付けられている制振樹脂製制振材51および発泡樹脂製吸音材52とよりなる。底面カバー43は、側面カバー本体42Aの下端に上端を連らねた横断面Ｌ状鋼板製底面カバー本体43Aと、これの水平部上面に貼り付けられている制振樹脂製制振材53および発泡樹脂製吸音材54とよりなる。
The side cover 42 has basically the same structure as the sound insulation cover 41 shown in FIG. 1, and is attached to the inner surface of the steel plate side cover main body 42A that extends from the upper end of the side surface of the abdomen Rw to the upper end of the bottom surface Rb. The vibration damping resin damping material 51 and the foamed resin sound absorbing material 52 are formed. The bottom cover 43 includes a bottom cover body 43A made of L-shaped steel plate having an upper end connected to the lower end of the side cover body 42A, and a damping resin damping material 53 attached to the upper surface of the horizontal portion. The sound absorbing material 54 is made of foamed resin.
この変形例による遮音カバー41は、図４に示すように、隣り合う２つの遮音カバー41の相対する端部同士は、１つの枕木S上において、重なり部61を形成している。側面カバー42には、図２に示す切欠31a、32aと同様に、切欠71、72が形成されている。また、底面カバー43には、枕木Sとの干渉を避けるための切欠73、74が形成されている。
In the sound insulation cover 41 according to this modification, as shown in FIG. 4, opposite end portions of two adjacent sound insulation covers 41 form an overlapping portion 61 on one sleeper S. In the side cover 42, notches 71 and 72 are formed in the same manner as the notches 31a and 32a shown in FIG. Further, the bottom cover 43 is formed with notches 73 and 74 for avoiding interference with the sleepers S.
本願発明による遮音カバーの防音効果の測定結果を、上記従来技術の項で説明した遮音カバーによる防音効果と比較して、説明する。
The measurement result of the sound insulation effect of the sound insulation cover according to the present invention will be described in comparison with the sound insulation effect obtained by the sound insulation cover described in the section of the prior art.
測定方法は、以下の通りである。枕木スパン600mm、50NレールRを、振動スピーカから出力するピンクノイズで加振する。振動スピーカからの直接音の影響を防ぐため、加振点から2m離れた場所で、レールRの腹部Rwから100mmの場所にマイクロフォンを置き、騒音レベルを測定した。
The measurement method is as follows. A sleeper span 600mm, 50N rail R is vibrated with pink noise output from a vibration speaker. In order to prevent the influence of the direct sound from the vibration speaker, a microphone was placed at a location 2 m away from the excitation point and 100 mm from the abdomen Rw of the rail R, and the noise level was measured.
防音効果は、レールRにカバーを施さない裸のレールRの音圧レベルから、カバーを施したレールRの音圧レベルを差し引きしたものである。
The soundproofing effect is obtained by subtracting the sound pressure level of the rail R with the cover from the sound pressure level of the bare rail R without the cover on the rail R.
図５および図６に、測定結果が示されている。図５に、400～4kHz間でトータルした音圧平均値が、図６に、400～4kHz間の周波数毎の音圧がそれぞれ示されている。
FIG. 5 and FIG. 6 show the measurement results. FIG. 5 shows the total sound pressure average value between 400 and 4 kHz, and FIG. 6 shows the sound pressure for each frequency between 400 and 4 kHz.
図５および図６中、aは、図７に示すカバー間に隙間が無い場合、bは、図８に示すカバー間に隙間が有る場合、cは、図１に示すように、カバー端部同士を重ね合わせた場合、dは、cで示すカバーの被覆面に加えて、図３に示すように、レールR底面をカバーで被覆した場合をそれぞれ示すものである。
5 and 6, a is when there is no gap between the covers shown in FIG. 7, b is when there is a gap between the covers shown in FIG. 8, c is the end of the cover as shown in FIG. In the case where the two are overlapped with each other, d indicates a case where the bottom surface of the rail R is covered with a cover as shown in FIG. 3 in addition to the cover surface of the cover indicated by c.
bで示すように、カバー間に隙間が有る場合は、音圧低減効果は最も低い。aで示すカバー間に隙間が無い場合と、cで示すように、カバーの端部同士を重ね合わせた場合とでは、同等レベルだけ音圧低減効果が有る。さらに、カバーにより、レールR底面を被覆すると、音圧低減効果はさらに高いことは、dに示す通りである。
As shown by b, the sound pressure reduction effect is the lowest when there is a gap between the covers. When there is no gap between the covers indicated by a and when the ends of the covers are overlapped as shown by c, there is a sound pressure reduction effect by the same level. Furthermore, as shown in d, the effect of reducing the sound pressure is even higher when the bottom surface of the rail R is covered with a cover.
上記カバー本体は、鋼板製に限定することなく、樹脂製であっても良い。但し、上記aで示すように、カバー間に隙間無しで突き合わせる場合、レールの熱収縮によって隙間ができる可能性があり、この場合、音圧低減効果が低くなる恐れがある。
The cover body is not limited to a steel plate, but may be a resin. However, as shown by a above, in the case of abutting between the covers without a gap, there is a possibility that a gap is formed due to thermal contraction of the rail, and in this case, the sound pressure reduction effect may be reduced.
上記吸音材を樹脂の発泡体から形成することにより、防音効果が向上することを、以下に説明する試験により確認できた。
It has been confirmed by the tests described below that the soundproofing effect is improved by forming the sound absorbing material from a resin foam.
図７に、試験条件を示す。図７に示す条件の樹脂による、実験室での騒音低減効果の測定データが図８に示されている。図９に、同じ条件の樹脂を用いて、実際の列車通過時の騒音測定データが示されている。図１０は、図８および図９に示すデータを用いて、列車通過時の音圧レベルから、上記各種樹脂による音圧低下効果をシミュレーションした結果を示すものである。図８～図１０のいずれにおいても、ポリエチレン樹脂の気泡径０．５～１ｍｍ、発泡倍率３０の吸音材による防音性能が良好であることが理解される。
Fig. 7 shows the test conditions. FIG. 8 shows measurement data of the noise reduction effect in the laboratory by the resin having the conditions shown in FIG. FIG. 9 shows noise measurement data when an actual train passes using a resin under the same conditions. FIG. 10 shows the result of simulating the sound pressure lowering effect by the above-mentioned various resins from the sound pressure level when passing through the train using the data shown in FIGS. 8 and 9. 8 to 10, it is understood that the soundproofing performance of the sound absorbing material having a bubble diameter of 0.5 to 1 mm of polyethylene resin and a foaming ratio of 30 is good.
上記遮音カバーを現場で施工するに際し、締結具の逃げとするための切欠は、施工現場において、現物合わせによって形成しても良いし、あらかじめ形成しておいても良い。現物合わせによれば、枕木のピッチの異動に左右されることなく、レールに遮音カバーを施工することができる。さらには、切欠に捕らわれることなく、遮音カバーを準備することができ、枕木ピッチ以上の長さをもつ遮音カバーを使用し易くなるため、施工性を向上させることができる。
When the above sound insulation cover is constructed on site, a notch used as a relief for the fastener may be formed on the construction site by actual matching, or may be formed in advance. According to the actual matching, the sound insulation cover can be applied to the rail without being affected by the change in the pitch of the sleepers. Furthermore, since the sound insulation cover can be prepared without being caught by the notch and the sound insulation cover having a length equal to or greater than the sleeper pitch can be easily used, the workability can be improved.
さらに、施工現場に搬入される遮音カバーが、ロール状に巻かれていると、ロール状の遮音カバーの取り扱いが容易となる。
Furthermore, if the sound insulation cover carried into the construction site is wound in a roll shape, it becomes easy to handle the roll sound insulation cover.
なお、図示省略するが、遮音カバー同士の重なり部33とレールRとの間の空隙（吸音材22が省略された箇所）にウレタン発泡体等を注入してもよく、空隙を埋めることで吸音効果の上昇できる。
Although illustration is omitted, urethane foam or the like may be injected into the gap between the overlappingportion 33 of the sound insulation covers 33 and the rail R (where the sound absorbing material 22 is omitted), and sound absorption is achieved by filling the gap. The effect can be increased.
Although illustration is omitted, urethane foam or the like may be injected into the gap between the overlapping
この発明によるレールの防音装置は、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止することを達成するのに適している。
The rail soundproofing device according to the present invention does not require the preparation of a large number of sound insulation covers having different lengths, and is suitable for achieving effective prevention of noise by one type of sound insulation cover having the same length.
S1～S3 枕木
31 第１遮音カバー
32 第２遮音カバー
L カバー長さ
P1、P2 枕木ピッチ
R レール S1-S3 sleepers
31 First sound insulation cover
32 Second sound insulation cover
L Cover length
P1, P2 Sleeper pitch
R rail
31 第１遮音カバー
32 第２遮音カバー
L カバー長さ
P1、P2 枕木ピッチ
R レール S1-S3 sleepers
31 First sound insulation cover
32 Second sound insulation cover
L Cover length
P1, P2 Sleeper pitch
R rail
Claims (8)
- レールを固定している３つの第１～第３枕木が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木に第１遮音カバーが渡されるとともに、第２および第３枕木に第２遮音カバーが渡されており、各遮音カバーの長さが、一定でありかつ第１および第２枕木のピッチ並びに第２および第３枕木のピッチのいずれよりも大きく形成されており、第２枕木上において、第１遮音カバーおよび第２遮音カバーの相対する端部同士が所要幅にわたって重ね合わされた状態で、第１遮音カバーおよび第２遮音カバーがレール表面の所要部分に被覆されているレールの防音装置。 The three first to third sleepers fixing the rail are sequentially arranged from one side to the other side in the rail length direction, and the first sound insulation cover is passed to the first and second sleepers. The second sound insulation cover is passed to the second and third sleepers, the length of each sound insulation cover is constant, and the pitch of the first and second sleepers and the pitch of the second and third sleepers The first sound insulation cover and the second sound insulation cover are on the rail surface in a state where the opposite ends of the first sound insulation cover and the second sound insulation cover are overlapped over the required width on the second sleeper. A soundproofing device for rails that are covered on the required parts.
- レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面上端から底部上面先端にかけて渡されているカバー本体と、カバー本体の内面に貼り付けられている吸音材とよりなり、第１遮音カバーおよび第２遮音カバーの重ね合わされた部分において、各遮音カバーのカバー本体のみが重ね合わされるように、各遮音カバーの吸音材が除去されている請求項１に記載のレールの防音装置。 The rail is composed of a head, abdomen, and bottom that are connected in sequence from top to bottom, and each sound insulation cover is passed from the top of the abdomen side to the top of the top of the bottom, and the sound absorption that is affixed to the inner surface of the cover The sound absorbing material of each sound insulating cover is removed so that only the cover main body of each sound insulating cover is overlapped at a portion where the first sound insulating cover and the second sound insulating cover are overlapped with each other. Rail soundproofing device as described.
- 吸音材が、樹脂を発泡させたものである請求項２に記載のレールの防音装置。 The soundproofing device for rails according to claim 2, wherein the sound absorbing material is made of foamed resin.
- 前記樹脂が、ポリエチレンであり、気泡径が、３ｍｍ以下である請求項３に記載のレールの防音装置。 The rail soundproofing device according to claim 3, wherein the resin is polyethylene and the bubble diameter is 3 mm or less.
- レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面および底部上面に被覆されている側面カバーと、側面カバーの下端に連なってレール底面に被覆されている底面カバーとよりなる請求項１に記載のレールの防音装置。 The rail consists of a head, abdomen, and bottom that are connected sequentially from top to bottom, and each sound insulation cover is covered with the side cover that covers the side of the abdomen and the top of the bottom, and the bottom of the side cover that covers the bottom of the rail. The soundproofing device for a rail according to claim 1, further comprising a bottom cover.
- 側面カバーおよび側面カバーが、吸音材を有しており、吸音材が、樹脂を発泡させたものである請求項５に記載のレールの防音装置。 6. The rail soundproofing device according to claim 5, wherein the side cover and the side cover have a sound absorbing material, and the sound absorbing material is a foamed resin.
- 前記樹脂が、ポリエチレンであり、気泡径が、３ｍｍ以下である請求項６に記載のレールの防音装置。 The rail soundproofing device according to claim 6, wherein the resin is polyethylene and the bubble diameter is 3 mm or less.
- [規則91に基づく訂正 29.06.2010]
施工現場において、レールの所定位置に防音カバーを固定する際に、枕木にレールを締結している締結具および防音カバーの干渉を回避するための切欠を、現物合わせによって、防音カバーに形成する、請求項１～７のうちいずれか１項に記載のレールの防音装置。 [Correction 29.06.2010 under Rule 91]
At the construction site, when fixing the soundproof cover at a predetermined position of the rail, a fastener for fastening the rail to the sleeper and a notch for avoiding interference of the soundproof cover are formed in the soundproof cover by matching the actual objects. The rail soundproofing device according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010800029071A CN102187035B (en) | 2009-04-03 | 2010-03-26 | Noise insulation device for rail |
| EP10758579.6A EP2415933B1 (en) | 2009-04-03 | 2010-03-26 | Noise insulation device for rail |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-090649 | 2009-04-03 | ||
| JP2009090649A JP5185877B2 (en) | 2009-04-03 | 2009-04-03 | Rail soundproofing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010113807A1 true WO2010113807A1 (en) | 2010-10-07 |
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ID=42828098
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/055405 WO2010113807A1 (en) | 2009-04-03 | 2010-03-26 | Noise insulation device for rail |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2415933B1 (en) |
| JP (1) | JP5185877B2 (en) |
| CN (1) | CN102187035B (en) |
| WO (1) | WO2010113807A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2770107A1 (en) * | 2011-10-17 | 2014-08-27 | Sekisui Chemical Co., Ltd. | Noise insulation device for rail |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5852477B2 (en) * | 2012-03-07 | 2016-02-03 | 積水化学工業株式会社 | Rail soundproofing device |
| CN103343496B (en) * | 2013-07-10 | 2016-06-08 | 铁道第三勘察设计院集团有限公司 | A kind of track bump leveller |
| JP6475476B2 (en) * | 2014-11-18 | 2019-02-27 | 積水化学工業株式会社 | Rail soundproofing device |
| DE102016217852B4 (en) | 2016-09-19 | 2018-04-26 | Günther Veit | Sound insulation device for rails and corresponding arrangement |
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| DE4036124A1 (en) * | 1990-10-29 | 1992-04-30 | Schwartz Heinz | Railway noise redn. device - comprises detachable housed polyurethane-based profile |
| EP1186710A2 (en) * | 2000-09-11 | 2002-03-13 | Johann Resch | Rail web sound proofing |
| JP2006002442A (en) * | 2004-06-17 | 2006-01-05 | Railway Technical Res Inst | Soundproof structure of rail |
| JP2008063813A (en) * | 2006-09-07 | 2008-03-21 | Sekisui Chem Co Ltd | Sound insulating device for rail |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0593608A1 (en) * | 1991-07-11 | 1994-04-27 | Jenbacher Energiesysteme Aktiengesellschaft | Noise reduction device for railway tracks |
| CN2692194Y (en) * | 2003-12-19 | 2005-04-13 | 钱国桢 | Noise reducing bush for road rail |
| JP4921833B2 (en) * | 2005-08-30 | 2012-04-25 | 積水化学工業株式会社 | Rail soundproofing device |
| JP4695487B2 (en) * | 2005-10-25 | 2011-06-08 | 財団法人鉄道総合技術研究所 | Rail soundproof structure |
| CN1928235B (en) * | 2006-09-21 | 2011-02-09 | 尹学军 | Damper rail |
-
2009
- 2009-04-03 JP JP2009090649A patent/JP5185877B2/en active Active
-
2010
- 2010-03-26 EP EP10758579.6A patent/EP2415933B1/en active Active
- 2010-03-26 CN CN2010800029071A patent/CN102187035B/en active Active
- 2010-03-26 WO PCT/JP2010/055405 patent/WO2010113807A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4036124A1 (en) * | 1990-10-29 | 1992-04-30 | Schwartz Heinz | Railway noise redn. device - comprises detachable housed polyurethane-based profile |
| EP1186710A2 (en) * | 2000-09-11 | 2002-03-13 | Johann Resch | Rail web sound proofing |
| JP2006002442A (en) * | 2004-06-17 | 2006-01-05 | Railway Technical Res Inst | Soundproof structure of rail |
| JP2008063813A (en) * | 2006-09-07 | 2008-03-21 | Sekisui Chem Co Ltd | Sound insulating device for rail |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2770107A1 (en) * | 2011-10-17 | 2014-08-27 | Sekisui Chemical Co., Ltd. | Noise insulation device for rail |
| EP2770107A4 (en) * | 2011-10-17 | 2015-07-15 | Sekisui Chemical Co Ltd | Noise insulation device for rail |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010242337A (en) | 2010-10-28 |
| EP2415933A4 (en) | 2014-04-02 |
| EP2415933A1 (en) | 2012-02-08 |
| JP5185877B2 (en) | 2013-04-17 |
| CN102187035B (en) | 2012-12-26 |
| EP2415933B1 (en) | 2017-10-25 |
| CN102187035A (en) | 2011-09-14 |
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