JP5321180B2 - Soundproof wall mounting structure and mounting method - Google Patents
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Abstract
Description
本発明は、鉄道沿線や道路の高架橋等に併設される防音壁の取付構造及びその取付方法に関する。 The present invention relates to a soundproof wall mounting structure provided along a railway line, a road viaduct, and the like, and a mounting method thereof.
従来、鉄道や道路の高架橋等に設置される防音壁は、安価な場所打ちコンクリート製や金属製の防音壁が設置されてきた。しかし、場所打ち鉄筋コンクリートは、骨材である砂利や砂を均一に分散できず、強度にばらつきのある防音壁が設置されていた。場所打ち鉄筋コンクリートの中でも、骨材に海砂を使用したものは中性化が促進され、鉄筋に錆びが発生して膨張してコンクリートに亀裂が入り、近年社会問題にもなっている剥落を招くおそれがあった。 Conventionally, soundproof walls installed on railway and road viaducts have been provided with inexpensive cast-in-place concrete or metal soundproof walls. However, cast-in-place reinforced concrete cannot uniformly disperse aggregate gravel and sand, and soundproof walls with varying strength are installed. Among cast-in-place reinforced concrete, those using sea sand as aggregate are promoted to be neutralized, rust occurs in the reinforcing bars, expands, and cracks in the concrete, causing peeling that has become a social problem in recent years There was a fear.
これに対し、例えば特許文献１に示されるように、工場で均質なコンクリート製防音壁（プレキャスト防音壁）をあらかじめ製造し、施工現場に運び込んで直接設置することにより、現場での設置工事を短期間で行うことが可能となった。 On the other hand, as shown in Patent Document 1, for example, a homogenous concrete soundproof wall (precast soundproof wall) is manufactured in advance in a factory, brought into the construction site, and directly installed, so that installation work at the site can be performed in a short period of time. It became possible to do between.
しかしながら、コンクリート製や金属製の防音壁は重量物であるが故に、運搬と取付けの際には、取付場所に重機類と専用の取付機械の搬入が必須である。特に設置場所が鉄道の高架橋の場合には、線路側から防音壁設置場所に専用の取付機械を持ち込むことが困難であり、たとえ持ち込めたとしても取付作業は高架下からの高所作業等が避けられず、結果的に、コンクリート製や金属製の防音壁の設置作業は、危険を伴う困難な作業にならざるを得なかった。 However, since the sound barrier made of concrete or metal is heavy, it is essential to bring heavy machinery and a dedicated mounting machine to the mounting place when transporting and mounting. Especially when the installation location is a railway viaduct, it is difficult to bring a dedicated installation machine from the track side to the installation location of the soundproof wall. As a result, the installation work of the sound barrier made of concrete or metal had to be a difficult and dangerous work.
最近では、より軽量な素材、例えば繊維強化プラスチック（ＦＲＰ）などを用いた軽量の防音壁が採用される例が増えてきている。このような軽量の防音壁（例えば、特許文献２参照）は、軽量性故の取付工事の容易さに加え、上述の場所打ち鉄筋コンクリートのような経年劣化の問題もなく、保守の簡素化が図れるという利点もあり、今後も採用例が増加するものと思われる。 Recently, an example in which a lightweight soundproof wall using a lighter material, for example, fiber reinforced plastic (FRP) or the like, is increasing. Such a light-weight soundproof wall (see, for example, Patent Document 2) can simplify the maintenance without the problem of deterioration over time like the above-mentioned cast-in-place reinforced concrete in addition to the ease of installation work due to its light weight. There are also advantages, and it seems that the number of adoption will increase in the future.
ただし、軽量性を特徴とするＦＲＰ製防音壁を既設建築物躯体に設置しようとする際、防音壁の位置の調整と立ち面を調整する必要があった。特に、立ち面の調整では防音壁取付部と建築物躯体の隙間に配置した金属製ライナープレートの厚みを調整する必要があった。具体的には、防音壁を繰り返し吊り上げ・吊り下げながら金属製ライナープレートの厚みを増減させる作業を行っているため、取付工事を長期化させる要因にもなっていた。 However, when an FRP soundproof wall characterized by lightness was to be installed in an existing building frame, it was necessary to adjust the position of the soundproof wall and the standing surface. In particular, in the adjustment of the standing surface, it was necessary to adjust the thickness of the metal liner plate disposed in the gap between the soundproof wall mounting portion and the building frame. Specifically, the work of increasing and decreasing the thickness of the metal liner plate while repeatedly lifting and hanging the soundproof wall is a factor that prolongs the installation work.
本発明は、上記のような問題点に鑑み、防音壁の位置調整と立ち面調整を容易にし、防音壁の取付作業時間を短縮させることができる防音壁の取付構造および取付方法を提供するものである。 In view of the above problems, the present invention provides a soundproof wall mounting structure and a mounting method that facilitate the position adjustment and the standing surface adjustment of the soundproof wall and can shorten the time required for mounting the soundproof wall. It is.
上記課題を解決するための本発明は、以下の構成を採用する。すなわち、
（１）防音パネル部と建築物躯体に取付可能な取付部とから構成された防音壁を前記建築物躯体に取り付ける防音壁の取付構造であって、弾性枠体が前記取付部の下面の外縁に沿って前記建築物躯体との間に挟持されてなるとともに、前記取付部と前記建築物躯体との間に転動弾性体を挟持させて前記防音壁を固定してなることを特徴とする防音壁の取付構造。
（２）前記転動弾性体の形状が球状、円筒状、楕円球状のいずれかであることを特徴とする（１）に記載の防音壁の取付構造。
（３）前記転動弾性体の直径もしくは短径が１〜５０ｍｍであることを特徴とする（１）または（２）に記載の防音壁の取付構造。
（４）前記転動弾性体は、前記取付部の下面に接するように挟持されてなることを特徴とする（１）〜（３）のいずれかに記載の防音壁の取付構造。
（５）前記転動弾性体は、前記取付部と前記建築物躯体の間の少なくとも３箇所以上に挟持されてなるとともに、隣接する転動弾性体の少なくとも１つの転動弾性体と離間して配置されてなることを特徴とする（１）〜（４）のいずれかに記載の防音壁の取付構造。
（６）前記弾性枠体は、前記取付部の下面の外縁に沿った略矩形であり、かつ各辺の厚みが１０〜２０ｍｍであることを特徴とする（１）〜（５）のいずれかに記載の防音壁の取付構造。
（７）前記弾性枠体は、前記転動弾性体の弾性率と比較して、同等もしくはそれ以下の弾性率を有することを特徴とする（１）〜（６）のいずれかに記載の防音壁の取付構造。
（８）建築物躯体への防音壁の取付方法であって、前記防音壁の取付部と前記建築物躯体の間に転動弾性体と弾性枠体を設置する工程、前記建築物躯体に埋設されたアンカーボルトに前記取付部の貫通孔を挿通し前後左右方向の位置を調整する工程、前記アンカーボルトを締結しながら前記防音壁の高さ方向を調整する工程、前記取付部と前記建築物躯体の隙間に充填材を充填する工程、充填材の固着後にナットを締め込む工程、からなることを特徴とする防音壁の取付方法。
The present invention for solving the above problems employs the following configuration. That is,
(1) A soundproof wall mounting structure for mounting a soundproof wall composed of a soundproof panel portion and a mounting portion attachable to a building housing to the building housing, wherein the elastic frame is an outer edge of the lower surface of the mounting portion And the soundproof wall is fixed by sandwiching a rolling elastic body between the mounting portion and the building housing. Soundproof wall mounting structure.
(2) The soundproof wall mounting structure according to (1), wherein the rolling elastic body has a spherical shape, a cylindrical shape, or an elliptical spherical shape.
(3) The soundproof wall mounting structure according to (1) or (2), wherein the rolling elastic body has a diameter or minor axis of 1 to 50 mm.
( 4 ) The soundproof wall mounting structure according to any one of (1) to ( 3 ), wherein the rolling elastic body is sandwiched so as to be in contact with a lower surface of the mounting portion.
( 5 ) The rolling elastic body is sandwiched between at least three locations between the attachment portion and the building frame, and is separated from at least one rolling elastic body of the adjacent rolling elastic bodies. The soundproof wall mounting structure according to any one of (1) to ( 4 ), which is arranged.
( 6 ) Any one of ( 1 ) to ( 5 ), wherein the elastic frame is substantially rectangular along the outer edge of the lower surface of the mounting portion , and each side has a thickness of 10 to 20 mm. The soundproof wall mounting structure described in 1.
( 7 ) The soundproofing according to any one of ( 1 ) to ( 6 ), wherein the elastic frame body has an elastic modulus equal to or lower than that of the rolling elastic body. Wall mounting structure.
( 8 ) A method of attaching a soundproof wall to a building frame, the step of installing a rolling elastic body and an elastic frame body between the soundproof wall mounting part and the building frame, embedded in the building frame Inserting the through hole of the attachment portion into the anchor bolt made to adjust the position in the front-rear and left-right directions, adjusting the height direction of the soundproof wall while fastening the anchor bolt, the attachment portion and the building filling a filler into a gap skeleton, as engineering tightening the nut after fixation of the filler, the mounting method of the sound barrier, characterized in that it consists of.
本発明によれば、防音壁の位置調整と立ち面調整を容易にし、防音壁の取付作業時間を短縮させることができる防音壁の取付構造および取付方法を提供することができる。 According to the present invention, it is possible to provide a soundproof wall mounting structure and a mounting method capable of facilitating the position adjustment and standing surface adjustment of the soundproof wall and shortening the soundproof wall mounting work time.
具体的には、防音壁の取付部と建築物躯体との間に、取付部の下面、または弾性枠体を挟持している取付部の下面と取付部に設けた貫通孔を除く下面に、少なくとも３箇所以上に転動弾性体を挟持させると、防音壁の前後左右の位置調整、高さ方向の立ち面調整が容易になるため、施工期間を短縮することができる。 Specifically, between the mounting portion of the soundproof wall and the building housing, the lower surface of the mounting portion, or the lower surface of the mounting portion holding the elastic frame and the lower surface except for the through holes provided in the mounting portion, When the rolling elastic body is sandwiched between at least three locations, the front / rear / right / left position adjustment of the soundproof wall and the height adjustment in the height direction are facilitated, so that the construction period can be shortened.
この発明の望ましい実施形態について、図面を参照しながら説明する。 Preferred embodiments of the present invention will be described with reference to the drawings.
図１は、本発明の一実施形態に関わる防音壁１を示している。防音壁１は、少なくとも防音パネル部１ａと取付部１ｂとから構成され、取付部１ｂは貫通孔１ｃを有している。 FIG. 1 shows a sound barrier 1 according to an embodiment of the present invention. The soundproof wall 1 includes at least a soundproof panel portion 1a and a mounting portion 1b, and the mounting portion 1b has a through hole 1c.
防音壁１の材質は特に限定しないが、軽量性を達成するには、例えばＦＲＰ製防音壁であることが好ましい。具体的には、ガラス繊維、炭素繊維、アラミド繊維等が用いられるが、この中で軽量化と高強度を同時に達成できる炭素繊維を用いることが好ましい。軽量化の点では炭素繊維に劣るものの、価格面からガラス繊維を選択することも好ましい。 The material of the soundproof wall 1 is not particularly limited, but, for example, an FRP soundproof wall is preferable in order to achieve light weight. Specifically, glass fiber, carbon fiber, aramid fiber, or the like is used. Among these, it is preferable to use carbon fiber that can simultaneously achieve weight reduction and high strength. Although it is inferior to carbon fiber in terms of weight reduction, it is also preferable to select glass fiber from the viewpoint of price.
これらの強化繊維を織物やクロス等にした強化繊維基材に樹脂を含浸させてＦＲＰを製造することができる。強化繊維基材は、目的とする強度、剛性、弾性に応じて適宜繊維配向や目付量を選ぶことができる。また、樹脂も特に限定されるものではないが、屋外に長期間設置しても環境変化に対して安定した樹脂を選択することが好ましく、例えばエポキシ系樹脂などが好適に用いられる。また、特に限定するものではないが、作業の効率面から防音壁１の重量は１ｍ幅当たり１００ｋｇ以下とすることが好ましい。 An FRP can be produced by impregnating a reinforcing fiber base made of a woven fabric, cloth, or the like with these reinforcing fibers. The fiber orientation and basis weight of the reinforcing fiber substrate can be appropriately selected according to the intended strength, rigidity, and elasticity. Also, the resin is not particularly limited, but it is preferable to select a resin that is stable against environmental changes even if it is installed outdoors for a long period of time. For example, an epoxy resin is preferably used. Although not particularly limited, the weight of the soundproof wall 1 is preferably 100 kg or less per 1 m width from the viewpoint of work efficiency.
図２（ａ）は、本発明の一実施形態に関わる転動弾性体３を挟持させた防音壁１の取付状態を示しており、図２（ｂ）は取付部分の拡大断面図である。図２（ａ）および図２（ｂ）に示すように、防音壁１の取付部１ｂと建築物躯体２との間に転動弾性体３を挟持させ、かつ弾性枠体４を取付部１ｂの下面の外縁全周に沿って挟持させ、座金５を介して建築物躯体２に埋設された複数のアンカーボルト７と取付用ナット６ａ〜６ｆで防音壁１を固定し、取付部１ｂと建築物躯体２との間に充填材８が充填されている。弾性枠体４は、充填材８の漏れを防止するためのもので、前記取付部１ｂの下面の外縁に沿った略矩形からなる枠体であり、各辺の厚みが１０〜２０ｍｍであることが好ましい。また、後述するように、取付部１ｂの下面と建築物躯体２との間隙１３の高さは、１〜５０ｍｍ、さらに好ましくは５〜２０ｍｍとなるように、防音壁１の重量を考慮して転動弾性体３と弾性枠体４の圧縮硬さ、厚み、高さを選ぶことができる。間隙１３の高さが１ｍｍ未満になると、充填材８が均一に充填されなくなり、防音壁１と建築物躯体２とを強固に固定することができなくなる恐れがある。また、間隙１３の高さが５０ｍｍを越えると、充填材８の使用量が増加し、充填材８が固着されるまでに多大な時間を要して施工期間が長期化することが考えられ、現実的ではない。 Fig.2 (a) has shown the attachment state of the soundproof wall 1 which clamped the rolling elastic body 3 concerning one Embodiment of this invention, FIG.2 (b) is an expanded sectional view of an attachment part. As shown in FIGS. 2A and 2B, the rolling elastic body 3 is sandwiched between the mounting portion 1b of the soundproof wall 1 and the building housing 2, and the elastic frame 4 is attached to the mounting portion 1b. The soundproof wall 1 is fixed with a plurality of anchor bolts 7 and mounting nuts 6a to 6f embedded in the building housing 2 through washers 5 so as to be clamped along the entire outer edge of the lower surface of the bottom of the housing, and the mounting portion 1b and the building. A filler 8 is filled between the housing 2. The elastic frame 4 is for preventing the filler 8 from leaking, and is a frame made of a substantially rectangular shape along the outer edge of the lower surface of the mounting portion 1b . Each side has a thickness of 10 to 20 mm. Is preferred. In addition, as will be described later, the weight of the soundproof wall 1 is considered so that the height of the gap 13 between the lower surface of the mounting portion 1b and the building housing 2 is 1 to 50 mm, more preferably 5 to 20 mm. The compression hardness, thickness, and height of the rolling elastic body 3 and the elastic frame body 4 can be selected. If the height of the gap 13 is less than 1 mm, the filler 8 may not be uniformly filled, and the soundproof wall 1 and the building housing 2 may not be firmly fixed. Further, if the height of the gap 13 exceeds 50 mm, the amount of the filler 8 used increases, and it takes a long time until the filler 8 is fixed. Not realistic.
転動弾性体３は、防音壁１の重量、重心位置に応じて材質および配置を選定する必要がある。一例として、図３（ａ）に示すように、取付部１ｂの下面に沿ってポリエチレンまたはウレタンなどの転動弾性体３を挟持させる場合、直径を１〜５０ｍｍとすれば、転動弾性体３から適正な反発力を得て取付部１ｂと建築物躯体２との間隙１３を１〜５０ｍｍに保持することができ、充填材８の乾燥時間や乾燥後の固定強度を得ることが可能である。なお、充填材８の使用量や設置後のひび割れ等を考慮すると５〜２０ｍｍであることがより好ましい。また、転動弾性体３の形状は球状のみに限らず、円筒状、楕円形状のもの等、転動弾性体３の一部が曲面形状を備え、この曲面形状に取付部１ｂの下面と接するような形状であってもよい。 The material and arrangement of the rolling elastic body 3 need to be selected according to the weight of the soundproof wall 1 and the position of the center of gravity. As an example, as shown in FIG. 3 (a), when the rolling elastic body 3 such as polyethylene or urethane is sandwiched along the lower surface of the mounting portion 1b, the rolling elastic body 3 is set to a diameter of 1 to 50 mm. Therefore, it is possible to obtain an appropriate repulsive force to hold the gap 13 between the mounting portion 1b and the building housing 2 at 1 to 50 mm, and to obtain the drying time of the filler 8 and the fixing strength after drying. . In addition, it is more preferable that it is 5-20 mm when the usage-amount of the filler 8, the crack after installation, etc. are considered. In addition, the shape of the rolling elastic body 3 is not limited to a spherical shape, but a part of the rolling elastic body 3 such as a cylindrical shape or an elliptical shape has a curved surface shape, and this curved surface shape is in contact with the lower surface of the mounting portion 1b. Such a shape may be used.
また、転動弾性体３は、図３（ａ）に示すように、少なくとも３箇所以上に転動弾性体３を挟持させることが好ましい。この場合も、転動弾性体３の直径もしくは短径は１〜５０ｍｍであることが好ましい。転動弾性体３を取付部１ｂの下面に設置する位置は、後述する防音壁１の設置位置（前後方向）９と設置位置（左右方向）１０の調整を安定して行うことが可能となるように、取付部１ｂの下面の向かい合う２辺のうち、一方の１辺の中央部に１箇所、他方の１辺の両端部に１箇所ずつ配置することが好ましい。 Further, as shown in FIG. 3A, the rolling elastic body 3 is preferably sandwiched between at least three locations. Also in this case, it is preferable that the rolling elastic body 3 has a diameter or a short axis of 1 to 50 mm. As for the position where the rolling elastic body 3 is installed on the lower surface of the mounting portion 1b, it is possible to stably adjust the installation position (front-rear direction) 9 and the installation position (left-right direction) 10 of the soundproof wall 1 described later. As described above, it is preferable that one of the two sides facing the lower surface of the mounting portion 1b is arranged at one center of one side and one at both ends of the other side.
さらに、転動弾性体３は、図３（ｂ）に示すように、弾性枠体４を挟持させた取付部１ｂの下面の外縁全周と取付部１ｂに穿設した貫通孔１ｃを除く取付部１ｂの下面に接し、かつ他の転動弾性体と接触しないように転動弾性体３を挟持させてもよい。この場合、後述する防音壁１の立ち面調整（前後方向）１１と立ち面調整（左右方向）１２が可能となるよう考慮し、取付部１ｂと建築物躯体２との間隙１３が１ｍｍ以上となるよう、防音壁１の重量を考慮して転動弾性体３の圧縮硬さ、厚み、高さを選ぶことができる。 Further, as shown in FIG. 3 (b), the rolling elastic body 3 is mounted except for the entire outer edge of the lower surface of the mounting portion 1b holding the elastic frame 4 and the through hole 1c formed in the mounting portion 1b. The rolling elastic body 3 may be sandwiched so as to be in contact with the lower surface of the portion 1b and not to contact other rolling elastic bodies. In this case, considering that the standing wall adjustment (front-rear direction) 11 and the standing surface adjustment (left-right direction) 12 of the soundproof wall 1 described later are possible, the gap 13 between the mounting portion 1b and the building frame 2 is 1 mm or more. Thus, the compression hardness, thickness, and height of the rolling elastic body 3 can be selected in consideration of the weight of the soundproof wall 1.
また、弾性枠体４は転動弾性体３の弾性率よりも低弾性率であることが好ましい。これは、後述するように防音壁１を設置する際、防音壁１の重量によって、弾性枠体４の変形が転動弾性体３よりも大きく、かつ、建築物躯体２の表面形状になじむことで、充填材８の漏れを防止する効果がある。ここで、弾性枠体４は枠形状のものでも、断面が四角である棒状のものを枠形状に組み合わせたものでもよい。また、転動弾性体３の弾性率を弾性枠体４よりも高くすることより、防音壁１の重量による転動弾性体３の変形を小さくすることができ、後述する設置位置（前後方向）９と設置位置（左右方向）１０の微調整を容易に行うことが可能となる。 The elastic frame body 4 preferably has a lower elastic modulus than that of the rolling elastic body 3. This is because, as will be described later, when the soundproof wall 1 is installed, the deformation of the elastic frame body 4 is larger than that of the rolling elastic body 3 and adapts to the surface shape of the building housing 2 due to the weight of the soundproof wall 1. Thus, there is an effect of preventing the filler 8 from leaking. Here, the elastic frame body 4 may be a frame shape or may be a combination of a rod shape having a square cross section in a frame shape. Further, by making the elastic modulus of the rolling elastic body 3 higher than that of the elastic frame body 4, deformation of the rolling elastic body 3 due to the weight of the soundproof wall 1 can be reduced, and an installation position (front-rear direction) described later. 9 and the installation position (left-right direction) 10 can be easily finely adjusted.
さらに、弾性枠体４の高さは転動弾性体３の直径と比較して、同等もしくはそれ以上であることが好ましい。弾性枠体４の高さが転動弾性体３の直径より小さい場合、立ち面調整（前後方向）１１と立ち面調製（左右方向）１２を行った際に、建築物躯体２と弾性枠体４の間に隙間ができ、充填材８が漏れ、防音壁１と建築物躯体２とを強固に固定することができなくなる恐れがある。 Furthermore, the height of the elastic frame 4 is preferably equal to or greater than the diameter of the rolling elastic body 3. When the height of the elastic frame 4 is smaller than the diameter of the rolling elastic body 3, when the standing surface adjustment (front-rear direction) 11 and the standing surface preparation (left-right direction) 12 are performed, the building housing 2 and the elastic frame body There is a possibility that a gap is formed between the four, the filler 8 leaks, and the soundproof wall 1 and the building frame 2 cannot be firmly fixed.
なお、転動弾性体３と弾性枠体４は特に材料を限定しないが、ポリエチレン、ウレタン、ゴム等の弾性体が挙げられ、材料コストや取付方法などを考慮するとポリエチレン、ウレタンまたはゴムが好ましく、さらには発泡性ポリエチレンまたは発泡性ウレタンまたは発泡性ゴムなどを使用することが好ましい。また、弾性枠体４にゴムを使用する場合、耐候性などを考慮してＥＰＤＭを選定することがより好ましい。 The rolling elastic body 3 and the elastic frame 4 are not particularly limited in material, but examples include elastic bodies such as polyethylene, urethane, and rubber, and polyethylene, urethane, or rubber is preferable in consideration of material costs and mounting methods. Furthermore, it is preferable to use foaming polyethylene, foaming urethane, foaming rubber or the like. Further, when rubber is used for the elastic frame 4, it is more preferable to select EPDM in consideration of weather resistance and the like.
座金５やナット６ａ〜６ｆは、アンカーボルト７に対応した規定の大きさを備えたものを使用することができる。材質については特に限定しないが、屋外で長期間使用しても安定して使用できる点において、ステンレス製や溶融亜鉛メッキ処理した鉄等であることが好ましい。また、ナット６ａ〜６ｆは緩み止めナットであることが好ましい。 As the washer 5 and the nuts 6a to 6f, those having a prescribed size corresponding to the anchor bolt 7 can be used. Although it does not specifically limit about a material, In the point which can be used stably even if it uses it outdoors for a long period of time, it is preferable that it is the product made from stainless steel, hot-dip galvanized iron, etc. The nuts 6a to 6f are preferably locking nuts.
充填材８は、セメントやモルタルなどに骨材を混入させたものが用いられる。取付部１ｂの下面と建築物躯体２との隙間などに容易に流れ込む流動性をもち、速乾性を備え、取り扱いの容易さ等の面から、モルタルを用いることが好ましい。 As the filler 8, a cement or mortar mixed with aggregate is used. It is preferable to use mortar from the viewpoints of fluidity that easily flows into the gap between the lower surface of the mounting portion 1b and the building housing 2, etc., quick drying, and ease of handling.
次に、上記の転動弾性体３を狭持する本発明の防音壁１の設置方法について、図面を参照しながら説明する。 Next, the installation method of the soundproof wall 1 of the present invention that holds the rolling elastic body 3 will be described with reference to the drawings.
あらかじめ建築物躯体２に、図３（ａ）、（ｂ）に示すように転動弾性体３を所望の位置に設置する。また、弾性枠体４を取付部１ｂの下面の外縁全周に接着剤や両面テープなどで貼設する。そして、弾性枠体４を貼設した防音壁１を吊り上げ、あらかじめ建築物躯体２に埋設された複数のアンカーボルト７を取付部１ｂに設けた貫通孔１ｃに挿通し、取付部１ｂの下面と転動弾性体３が接触し、かつ弾性枠体４がほぼ鉛直に圧縮された状態となるように静置する。なお、防音壁１の吊り上げには、吊り具としてパネルクランプなどを使用する。 As shown in FIGS. 3A and 3B, the rolling elastic body 3 is installed in a desired position on the building housing 2 in advance. Further, the elastic frame body 4 is attached to the entire outer edge of the lower surface of the mounting portion 1b with an adhesive or a double-sided tape. Then, the soundproof wall 1 with the elastic frame 4 attached is lifted, and a plurality of anchor bolts 7 embedded in the building housing 2 in advance are inserted into the through holes 1c provided in the attachment portion 1b, and the lower surface of the attachment portion 1b The rolling elastic body 3 is brought into contact with the elastic frame body 4 so that the elastic frame body 4 is compressed almost vertically. For lifting the soundproof wall 1, a panel clamp or the like is used as a lifting tool.
まず、図２（ａ）に示すように静置した防音壁１の設置位置（前後方向）９と設置位置（左右方向）１０の微調整を行う。位置の微調整後、静置した防音壁１の取付部１ｂに挿通したアンカーボルト７に座金５を介在させ、ナット６ａ〜６ｆを締め込むことで防音壁１の仮固定を行う。仮固定後、吊り具は防音壁１から取り外してもよい。 First, as shown in FIG. 2 (a), fine adjustment of the installation position (front-rear direction) 9 and installation position (left-right direction) 10 of the soundproof wall 1 placed still is performed. After the fine adjustment of the position, the soundproof wall 1 is temporarily fixed by interposing the washer 5 on the anchor bolt 7 inserted through the mounting portion 1b of the soundproof wall 1 that has been stationary and tightening the nuts 6a to 6f. After temporary fixing, the hanger may be removed from the soundproof wall 1.
次に、隣り合う防音壁との相対位置を合わせるため、図２（ａ）に示すとおり、立ち面調整（前後方向）１１と立ち面調整（左右方向）１２を行って微調整を行う。 Next, in order to adjust the relative position between the adjacent sound barriers, as shown in FIG. 2A, fine adjustment is performed by performing the standing surface adjustment (front-rear direction) 11 and the standing surface adjustment (left-right direction) 12.
立ち面調整（前後方向）１１を行う場合、立ち面調整（前方向）１１ａはナット６ａおよび６ｃを締め込み、逆側の立ち面調整（後方向）１１ｂはナット６ｄおよび６ｆを締め込むことで調整する。また、立ち面調製（左右方向）１２を行う場合、立ち面調整（左方向）１２ａはナット６ａおよびナット６ｄを締め込み、逆側の立ち面調整（右方向）１２ｂはナット６ｃおよび６ｆを締め込むことで調整する。また、前述のように、取付部１ｂの下面と建築物躯体２との間隙１３の高さが１〜５０ｍｍとなるようにナット６ａ、６ｃおよび６ｄおよび６ｆの締め込み量で調整する。 When the standing surface adjustment (front-rear direction) 11 is performed, the standing surface adjustment (front direction) 11a tightens the nuts 6a and 6c, and the opposite-side standing surface adjustment (rear direction) 11b tightens the nuts 6d and 6f. adjust. When the standing surface preparation (left-right direction) 12 is performed, the standing surface adjustment (left direction) 12a tightens the nut 6a and the nut 6d, and the opposite-side standing surface adjustment (right direction) 12b tightens the nuts 6c and 6f. To adjust. Further, as described above, the nuts 6a, 6c, 6d, and 6f are adjusted by tightening amounts so that the height of the gap 13 between the lower surface of the mounting portion 1b and the building housing 2 is 1 to 50 mm.
防音壁１の配置および微調整が完了した後、取付部１ｂと建築物躯体２との間に生じた空間、およびアンカーボルト７と貫通孔１ｃとの間に生じた空間には、取付部１ｂとアンカーボルト７の相対位置がずれないように、防音壁１と建築物躯体２とを固定する充填材８を充填する。 After the arrangement and fine adjustment of the soundproof wall 1 is completed, the space formed between the mounting portion 1b and the building housing 2 and the space generated between the anchor bolt 7 and the through hole 1c are attached to the mounting portion 1b. In order to prevent the relative position of the anchor bolt 7 from shifting, a filler 8 for fixing the soundproof wall 1 and the building housing 2 is filled.
充填した充填材８が固着した後、所望の締め付けトルクでナット６ａ〜６ｆを締め込むと、防音壁１の設置作業が完了する。 When the nuts 6a to 6f are tightened with a desired tightening torque after the filled filler 8 is fixed, the installation work of the soundproof wall 1 is completed.
上記のような本発明に係る防音壁の施工方法によれば、転動弾性体３を取付部１ｂと建築物躯体２との間に狭持させることにより、容易に防音壁１の設置位置（前後方向）９と設置位置（左右方向）１０の微調整が容易となり、また、防音壁１を吊り上げることなく、作業者がナットの締め込みを行うだけで、締め込み量に応じて立ち面調整（前後方向）１１および立ち面調整（左右方向）１２が容易に可能となる。高架橋に専用の取付機械を持ち込んで立ち面調整を行う従来の調整方法に比べ、防音壁の設置時間が２倍以上早くなり、工期短縮を可能にした。 According to the construction method of the soundproof wall according to the present invention as described above, the installation position of the soundproof wall 1 can be easily achieved by sandwiching the rolling elastic body 3 between the mounting portion 1b and the building housing 2 (see FIG. It is easy to make fine adjustments between the front / rear direction (9) and the installation position (left / right direction) 10, and the operator can just tighten the nut without lifting the soundproof wall 1 and adjust the surface according to the tightening amount. (Front-back direction) 11 and standing surface adjustment (left-right direction) 12 can be easily performed. The installation time of the soundproof wall is more than twice as fast as the conventional adjustment method in which the installation surface is adjusted by bringing a dedicated mounting machine to the viaduct, and the construction period can be shortened.
１：防音壁
１ａ：防音パネル部
１ｂ：取付部
１ｃ：貫通孔
２：建築物躯体
３：転動弾性体
４：弾性枠体
５：座金
６ａ：前側左ナット
６ｂ：前側中ナット
６ｃ：前側右ナット
６ｄ：後側左ナット
６ｅ：後側中ナット
６ｆ：後側右ナット
７：アンカーボルト
８：充填材
９：設置位置（前後方向）
１０：設置位置（左右方向）
１１：立ち面調整（前後方向）
１１ａ：立ち面調整（前方向）
１１ｂ：立ち面調整（後方向）
１２：立ち面調整（左右方向）
１２ａ：立ち面調整（左方向）
１２ｂ：立ち面調整（右方向）
１３：間隙
1: Soundproof wall 1a: Soundproof panel portion 1b: Mounting portion 1c: Through hole 2: Building housing 3: Rolling elastic body 4: Elastic frame 5: Washer 6a: Front left nut 6b: Front middle nut 6c: Front right Nut 6d: Rear left nut 6e: Rear middle nut 6f: Rear right nut 7: Anchor bolt 8: Filler 9: Installation position (front-rear direction)
10: Installation position (left-right direction)
11: Standing surface adjustment (front-back direction)
11a: Standing surface adjustment (forward direction)
11b: Standing surface adjustment (backward)
12: Standing surface adjustment (left-right direction)
12a: Standing surface adjustment (left direction)
12b: Standing surface adjustment (right direction)
13: Gap
Claims (8)
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| JPH09143935A (en) * | 1995-11-21 | 1997-06-03 | Ishikawajima Constr Materials Co Ltd | Wall balustrade |
| JP3472725B2 (en) * | 1999-08-04 | 2003-12-02 | マテラス株式会社 | Precast concrete sound barrier and its construction method |
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