JPH0220248Y2 - - Google Patents
Info
- Publication number
- JPH0220248Y2 JPH0220248Y2 JP1983167994U JP16799483U JPH0220248Y2 JP H0220248 Y2 JPH0220248 Y2 JP H0220248Y2 JP 1983167994 U JP1983167994 U JP 1983167994U JP 16799483 U JP16799483 U JP 16799483U JP H0220248 Y2 JPH0220248 Y2 JP H0220248Y2
- Authority
- JP
- Japan
- Prior art keywords
- bridge girder
- low frequency
- low
- bridge
- absorbing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011358 absorbing material Substances 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
- Building Environments (AREA)
- Vibration Prevention Devices (AREA)
Description
【考案の詳細な説明】 本考案は橋の低周波公害防止装置に関する。[Detailed explanation of the idea] The present invention relates to a low frequency pollution prevention device for a bridge.
橋の上を車が通過するときに、その橋桁の振動
により低周波公害が生じることがある。この低周
波公害を解消する方法が種々提案されており、た
とえば、実開昭49−134827号公報には台脚上で杭
木を支持する取附台の表面に吸音材を貼着するも
のが提案されている。 When cars pass over a bridge, the vibrations of the bridge girder can cause low-frequency pollution. Various methods have been proposed to eliminate this low frequency pollution. For example, Japanese Utility Model Application No. 49-134827 proposes a method of pasting sound-absorbing material on the surface of the pedestal that supports the wooden pile on the pedestal. Proposed.
しかし上記従来構成では、振動する取附台に直
接吸音材を貼付けているため、低周波の吸収効率
が低く、また発生する低周波は、それぞれ橋桁の
長さや構造、材質、通過車両等により変化するた
め、その橋桁の固有の発生周波数に対応して効果
的に低周波を吸収するように設定することがむづ
かしいものであつた。 However, in the above conventional configuration, the sound absorbing material is attached directly to the vibrating mount, so the absorption efficiency of low frequencies is low, and the low frequencies generated vary depending on the length, structure, material, passing vehicles, etc. of each bridge girder. Therefore, it has been difficult to set the bridge girder to effectively absorb low frequencies in response to the unique frequency generated by the bridge girder.
そこで本考案はかかる問題点を解消した橋の低
周波公害防止装置を提供するものであつて、その
特徴とするところは、橋桁の両側面に、一端縁が
側面に貼着されるとともに残部が側面に所定〓間
をあけて鱗状に配列され側面を覆う多数の低周波
吸収材を設けたものである。 Therefore, the present invention provides a low-frequency pollution prevention device for bridges that solves these problems.The feature is that one edge is attached to both sides of the bridge girder, and the remaining part is attached to the side surface. A large number of low frequency absorbing materials are arranged on the side surface in a scale-like manner at predetermined intervals and cover the side surface.
かかる構成によれば、橋の上を車が通過するこ
とによつて橋桁が振動し、それによつて生じる低
周波は、橋桁側面と戟間空間との界面、および〓
間空間と低周波吸収材との界面を通過して減衰さ
れた後、低周波吸収材に吸収される。しかも、低
周波吸収材は形状等により、その橋桁から発生す
る固有の周波数を効果的に吸収するように設定で
きるので、きわめて効果的な低周波の吸収が可能
となり、したがつて低周波公害を解消することが
できるものである。 According to this configuration, the bridge girder vibrates when a car passes over the bridge, and the low frequency waves generated thereby are transmitted to the interface between the side surface of the bridge girder and the space between the bridges, and the
After passing through the interface between the interstitial space and the low frequency absorbing material and being attenuated, it is absorbed by the low frequency absorbing material. Moreover, the low frequency absorbing material can be set to effectively absorb the unique frequencies generated by the bridge girder depending on its shape, etc., making it possible to absorb low frequencies extremely effectively, thereby reducing low frequency pollution. It is something that can be resolved.
以下、本考案の一実施例を図に基づいて説明す
る。１は橋脚、２は橋脚１間に渡し掛けられた橋
桁、３は該橋桁２の両側面を覆う多数の低周波吸
収材であつて、その上縁は橋桁２の側壁２Ａに貼
着され、それ以外の部分は第３図に示すごとく水
平断面波形に形成され、側壁２Ａから離れて〓間
７が形成されている。またこの各吸収材３は、い
わゆる鱗状に配列されて側壁２Ａをほぼ覆つてい
る。吸収材３の材質としては、布、ゴム、合成樹
脂材などの可撓性があつて低周波を吸収すること
ができるものが考えられ、形状等を変更して任意
の低周波をより吸収しやすいように設定すること
ができる。またその断面形状は、第４図に示すご
とく発泡させたものや、第５図に示すごとく２枚
の平板４とその間の波板５とからなるものが考え
られる。 Hereinafter, one embodiment of the present invention will be described based on the drawings. 1 is a bridge pier, 2 is a bridge girder spanning between the bridge piers 1, and 3 is a large number of low frequency absorbing materials covering both sides of the bridge girder 2, the upper edge of which is affixed to the side wall 2A of the bridge girder 2, The other portions are formed in a horizontal cross-sectional waveform as shown in FIG. 3, and a gap 7 is formed apart from the side wall 2A. Further, each absorbent material 3 is arranged in a so-called scale shape and substantially covers the side wall 2A. The absorbing material 3 can be made of cloth, rubber, synthetic resin, or other flexible materials that can absorb low frequencies, and the shape can be changed to absorb more of the desired low frequencies. It can be easily configured. Further, its cross-sectional shape may be foamed as shown in FIG. 4 or made of two flat plates 4 and a corrugated plate 5 between them as shown in FIG.
上記構成において、橋桁２の上を車６が通過す
ることによつて橋桁２が振動し、それによつて生
じる低周波は、橋桁２と〓間７空間との界面およ
び〓間７空間と吸収材３との界面を通過して減衰
させられ、吸収材３に吸収される。 In the above configuration, the bridge girder 2 vibrates when the car 6 passes over the bridge girder 2, and the low frequency generated thereby is transmitted to the interface between the bridge girder 2 and the space 7, and the space between the space 7 and the absorbing material. 3, is attenuated and absorbed by the absorbent material 3.
以上述べたごとく本考案によれば、橋の上を車
が通過することによつて橋桁が振動し、それによ
つて生じる低周波は、介在された〓間空間との２
つの界面により減衰させられ、さらにその橋桁固
有の低周波を効果的に吸収するように設定された
低周波吸音材に吸収される。したがつて低周波公
害をより効果的に解消することができるものであ
る。 As described above, according to the present invention, when a car passes over the bridge, the bridge girder vibrates, and the low frequency generated thereby is caused by the vibration between the intervening space and the bridge girder.
The sound is attenuated by the two interfaces, and is further absorbed by the low-frequency sound-absorbing material designed to effectively absorb the low-frequency waves unique to the bridge girder. Therefore, low frequency pollution can be more effectively eliminated.
図は本考案の一実施例を示し、第１図は側面
図、第２図は横断面図、第３図は第２図の−
矢視図、第４図および第５図はそれぞれ低周波吸
収材の断面形状の一例を示す断面図である。
１……橋脚、２……橋桁、２Ａ……側壁、３…
…低周波吸収材、４……平板、５……波板、６…
…車、７……〓間。
The figures show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a cross-sectional view, and Fig. 3 is the same as Fig. 2.
The arrow view, FIG. 4, and FIG. 5 are cross-sectional views each showing an example of the cross-sectional shape of the low-frequency absorbing material. 1... Pier, 2... Bridge girder, 2A... Side wall, 3...
...Low frequency absorbing material, 4...Flat plate, 5...Corrugated plate, 6...
...Car, 7...〓.
Claims (1)
ともに残部が側面に所定〓間をあけて鱗状に配列
され側面を覆う多数の低周波吸収材を設けたこと
を特徴とする橋の低周波公害防止装置。 A low frequency bridge characterized in that a large number of low frequency absorbing materials are provided on both sides of a bridge girder, one edge of which is adhered to the side surface, and the remaining parts are arranged in a scale-like manner at a predetermined distance from the side surface to cover the side surface. Frequency pollution prevention device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16799483U JPS6076114U (en) | 1983-10-28 | 1983-10-28 | Bridge low frequency pollution prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16799483U JPS6076114U (en) | 1983-10-28 | 1983-10-28 | Bridge low frequency pollution prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6076114U JPS6076114U (en) | 1985-05-28 |
| JPH0220248Y2 true JPH0220248Y2 (en) | 1990-06-04 |
Family
ID=30367388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16799483U Granted JPS6076114U (en) | 1983-10-28 | 1983-10-28 | Bridge low frequency pollution prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6076114U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040017591A (en) * | 2002-08-22 | 2004-02-27 | 최영근 | Green slope Reinforcement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49134827U (en) * | 1973-03-14 | 1974-11-20 |
-
1983
- 1983-10-28 JP JP16799483U patent/JPS6076114U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6076114U (en) | 1985-05-28 |
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