JP6276072B2 - Soundproof structure and temporary improved silencer for temporary enclosures for construction sites - Google Patents

Soundproof structure and temporary improved silencer for temporary enclosures for construction sites Download PDF

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JP6276072B2
JP6276072B2 JP2014043756A JP2014043756A JP6276072B2 JP 6276072 B2 JP6276072 B2 JP 6276072B2 JP 2014043756 A JP2014043756 A JP 2014043756A JP 2014043756 A JP2014043756 A JP 2014043756A JP 6276072 B2 JP6276072 B2 JP 6276072B2
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panel
temporary enclosure
temporary
silencer
soundproof structure
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JP2015168960A (en
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泰 嶋田
泰 嶋田
岩本　毅
毅 岩本
靖洋 西脇
靖洋 西脇
孝夫 松井
孝夫 松井
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Sumitomo Mitsui Construction Co Ltd
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Description

本発明は、工事現場用仮囲いの防音構造及び先端改良型消音器に関する。特に、仮囲いの頂部で回折して地上付近に広がる騒音を低減する防音構造及び工事現場用仮囲いに取り付け可能な先端改良型消音器に関する。   The present invention relates to a soundproof structure for a temporary enclosure for a construction site and a tip improved silencer. In particular, the present invention relates to a soundproof structure that reduces noise that diffracts at the top of a temporary enclosure and spreads near the ground, and a tip improved silencer that can be attached to a temporary enclosure for a construction site.

工事現場用仮囲いは、建設現場や資材置場等の工事現場の外部からの遮蔽や、部外者の工事現場への立ち入りの防止、外部への建築資材等の飛散の防止、工事現場で発生した騒音の外部への漏洩の防止等を目的として設置され、工事が終了すると撤去される。   Temporary enclosures for construction sites are shielded from outside the construction sites, such as construction sites and material storage areas, prevent outsiders from entering the construction sites, prevent building materials from scattering outside, and occur at construction sites It will be installed for the purpose of preventing the leaked noise from leaking outside and will be removed when the construction is completed.

工事現場の騒音対策としては、特許文献１に記載されているような、吸音材を備えた仮囲い板によって工事用仮囲いを形成し、仮囲いを透過する音を低減する手段が提案されている。また、特許文献２では、仮囲い材上端部を内側に傾斜させる構成が提案されている。一方、仮囲いの頂部で回折して仮囲いの外部の地上付近に広がる騒音の対策としては、仮囲い用パネル材を高くし、又はパネル材の上方に防音シートを設置するなどの手段が知られている。   As a noise countermeasure at a construction site, there has been proposed means for reducing a sound transmitted through the temporary enclosure by forming a temporary enclosure for the construction with a temporary enclosure plate provided with a sound absorbing material as described in Patent Document 1. Yes. Patent Document 2 proposes a configuration in which the upper end of the temporary enclosure member is inclined inward. On the other hand, as countermeasures against noise that diffracts at the top of the temporary enclosure and spreads near the ground outside the temporary enclosure, means such as raising the temporary enclosure panel material or installing a soundproof sheet above the panel material are known. It has been.

ところで、道路用遮音壁では、特許文献３に記載されているような、頂部を回折して漏れる騒音を減少させるための先端改良型遮音壁が知られている。道路用先端改良型遮音壁は、その頂部先端に吸音型、干渉型、共鳴型又は能動制御型等の消音器を備えることで、頂部を回折して道路敷地外に漏れる交通騒音を減少させる。   By the way, in the sound insulation wall for roads, the tip improvement type sound insulation wall for reducing the noise which leaks by diffracting the top part as described in patent document 3 is known. The road improved sound insulation wall for a road is provided with a sound absorbing type, interference type, resonance type, active control type or the like silencer at the top of the top, thereby reducing traffic noise that diffracts the top and leaks outside the road site.

特開平０６−２８８０９８号公報Japanese Patent Laid-Open No. 06-288098 登実登３００１７５９号公報Noboru No. 3001759 特開平９−１５１４２５号公報JP-A-9-151425

特許文献１に記載の手段では、仮囲い板の上端付近の吸音材が仮囲いの頂部で回折する騒音をある程度吸収することが期待できるが、さらに騒音を低減することが望ましかった。特許文献２に記載の手段では、発生騒音の上方への拡散の低減が期待できるが、仮囲いの上端で回折して地上付近に向かう騒音を十分に低減することはできなかった。また、仮囲いの高さを嵩上げしても、騒音は、嵩上げされた仮囲いの上端で回折し、地上付近に向かっていた。   With the means described in Patent Document 1, it can be expected that the sound absorbing material near the upper end of the temporary enclosure plate absorbs the noise diffracted at the top of the temporary enclosure to some extent, but it was desirable to further reduce the noise. Although the means described in Patent Document 2 can be expected to reduce the upward diffusion of the generated noise, the noise diffracted at the upper end of the temporary enclosure and traveling toward the ground cannot be sufficiently reduced. Further, even if the height of the temporary enclosure was raised, the noise was diffracted at the upper end of the raised temporary enclosure and was moving toward the ground.

また、仮囲いは、単管パイプを組み合わせた骨組と、その骨組に支持された鋼板パネルとから形成された仮設構造物であるのが一般的である。また、仮囲いは現場ごとに作成され、鋼板パネルの配置形状が同一であっても、骨組の形状は画一化されておらず現場ごとに異なる。よって、恒久的構造物である道路用遮音壁の頂部用の先端改良型消音器を仮囲いに直接取り付けることは困難である。また、仮に、道路用の先端改良型消音器を既存の取付構造を用いて仮囲いの骨組み又は鋼板パネルに固定すると、その取り付け作業が煩雑であり、騒音の漏れる隙間が生じるおそれが高く、仮囲いの解体作業も煩雑となる。   Further, the temporary enclosure is generally a temporary structure formed from a frame that combines single pipes and a steel plate panel that is supported by the frame. In addition, the temporary enclosure is created for each site, and even if the arrangement shape of the steel plate panels is the same, the shape of the frame is not uniform and varies from site to site. Therefore, it is difficult to directly attach the improved silencer for the top of the sound insulation wall for roads, which is a permanent structure, directly to the temporary enclosure. Also, if a road improved silencer for roads is fixed to a temporary enclosure frame or steel plate panel using an existing mounting structure, the mounting work is complicated, and there is a high risk of noise leaking gaps. The work of dismantling the enclosure is also complicated.

本発明は、以上の事情を鑑みてなされたものであり、頂部を乗り越える音波も含めて騒音を低減させる、工事現場用仮囲いの防音構造を提供することを目的とする。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a soundproof structure for a temporary enclosure for a construction site that can reduce noise including sound waves over the top.

本発明のある側面は、工事現場用仮囲いの防音構造（２）であって、工事現場を外部から遮蔽するべく立設されたパネル（２０）を有する仮囲い（４）と、前記パネルの上端近傍に配置される先端改良型消音器（２４）とを備え、前記先端改良型消音器はフック（４４）を有し、前記フックは前記仮囲いに係合することを特徴とする。ここで、先端改良型消音器とは、壁状の構造物の頂部を乗り越えて伝播する音の大きさを低減する装置であり、吸音型、干渉型、共鳴型及び能動制御型の消音器を含む。   One aspect of the present invention is a soundproof structure (2) for a temporary enclosure for a construction site, the temporary enclosure (4) having a panel (20) erected to shield the construction site from the outside, A tip improved silencer (24) disposed in the vicinity of the upper end, wherein the tip improved silencer has a hook (44), and the hook engages with the temporary enclosure. Here, the improved tip silencer is a device that reduces the volume of sound that travels over the top of a wall-like structure. The sound absorber, interference type, resonance type, and active control type silencer Including.

この構成によれば、工事現場用仮囲いに先端改良型消音器を容易に取り付け、取り外すことができ、仮囲いの頂部を乗り越えて広がる騒音を低減することができる。   According to this configuration, the tip-improved silencer can be easily attached to and detached from the temporary enclosure for construction sites, and noise that spreads over the top of the temporary enclosure can be reduced.

本発明の他の側面は、上記構成において、前記仮囲いは、長尺部材を組み合わせて形成されて前記パネル及び前記先端改良型消音器を支持する支持骨組材（６）をさらに有し、前記パネルと前記先端改良型消音器とは、前記支持骨組材に対して互いに相反する側に配置され、前記パネルと前記先端改良型消音器との隙間を塞ぐ遮音カバー（４６）をさらに備えることを特徴とする。   According to another aspect of the present invention, in the above configuration, the temporary enclosure further includes a support frame member (6) that is formed by combining long members and supports the panel and the tip improved silencer, The panel and the tip improved silencer are further provided with a sound insulation cover (46) that is disposed on the side opposite to the supporting frame material and closes a gap between the panel and the tip improved silencer. Features.

この構成によれば、先端改良型消音器の設置に伴って生じるパネルとの隙間から漏れる騒音を低減することができる。   According to this structure, the noise which leaks from the clearance gap between the panels which arises with installation of a tip improvement type silencer can be reduced.

本発明の他の側面は、上記構成において、前記支持骨組材は、横方向に延在する横部材（１８）を有し、前記フックは、前記横部材に係合することを特徴とする。   Another aspect of the present invention is characterized in that, in the above-described configuration, the supporting frame member has a lateral member (18) extending in a lateral direction, and the hook is engaged with the lateral member.

この構成によれば、先端改良型消音器の取付がさらに容易になるとともに、先端改良型消音器の高さの調整が容易になる。   According to this configuration, the tip improved silencer can be more easily attached and the height of the tip improved silencer can be easily adjusted.

本発明の他の側面は、上記構成において、前記先端改良型消音器は、その上端が前記パネルの上端から突出するように配置されることを特徴とする。   Another aspect of the present invention is characterized in that, in the above-described configuration, the tip improved silencer is disposed so that an upper end thereof protrudes from an upper end of the panel.

この構成によれば、先端改良型消音器が遮音壁としても機能し、仮囲いを嵩上げしたのと同様の効果を得られる。   According to this configuration, the advanced silencer functions as a sound insulation wall, and the same effect as that obtained by raising the temporary enclosure can be obtained.

本発明の他の側面は、上記構成において、前記先端改良型消音器は、上下に延在する複数の共鳴管（２８，３０）を有する共鳴器型の消音器であることを特徴とする。   Another aspect of the present invention is characterized in that, in the above configuration, the improved tip silencer is a resonator type silencer having a plurality of resonance tubes (28, 30) extending vertically.

この構成によれば、仮囲いの頂部を回折して工事敷地外の地表に向けて広がる騒音を音の共鳴を利用して低減することができる。また、運搬及び保管時にかさばらない形状の先端改良型消音器を作成することができる。   According to this configuration, it is possible to reduce noise that diffracts the top of the temporary enclosure and spreads toward the ground surface outside the construction site by using sound resonance. Further, it is possible to create a tip improved silencer having a shape that is not bulky during transportation and storage.

本発明の他の側面は、上記構成において、前記複数の共鳴管の少なくとも一部は、互いの凸部が当接するように重ね合わせられた複数の波板（３４，３８）から形成される。   According to another aspect of the present invention, in the above-described configuration, at least a part of the plurality of resonance tubes is formed by a plurality of corrugated plates (34, 38) overlapped so that the convex portions thereof are in contact with each other.

この構成によれば、共鳴管が配列された先端改良型消音器を容易かつ低コストで作成することができる。また、共鳴管の上下方向長さの調整も容易であるため、共鳴管が消音する音の周波数を容易に変更できる。   According to this configuration, it is possible to easily and cost-effectively produce a tip improved silencer in which resonance tubes are arranged. Further, since the vertical length of the resonance tube can be easily adjusted, the frequency of the sound that the resonance tube silences can be easily changed.

本発明の他の側面は、上記構成において、前記共鳴管は、第１の上下方向の長さを有する複数の第１共鳴管（３４）と、前記第１の上下方向長さよりも短い第２の上下方向長さを有する複数の第２共鳴管（３８）とを含み、前記複数の第１共鳴管は、互いに隣接するように前記パネルの横方向に沿って配列され、前記複数の第２共鳴管は、前記複数の第１共鳴管の列よりも内側において互いに隣接するように前記パネルの横方向に沿って配列されたことを特徴とする。   According to another aspect of the present invention, in the above configuration, the resonance tube includes a plurality of first resonance tubes (34) having a first vertical length and a second length shorter than the first vertical length. A plurality of second resonance tubes (38) having a length in the vertical direction, wherein the plurality of first resonance tubes are arranged along the horizontal direction of the panel so as to be adjacent to each other. The resonance tubes are arranged along the lateral direction of the panel so as to be adjacent to each other inside the row of the plurality of first resonance tubes.

この構成によれば、２種類の波長群の騒音に対して消音効果が発揮され、広範囲の波長域の騒音を低減することができる。   According to this configuration, a silencing effect is exhibited with respect to noise of two types of wavelength groups, and noise in a wide wavelength range can be reduced.

本発明の他の側面は、上記構成において、前記パネルの外面に取り付けられる補助パネル（４８）をさらに備え、前記パネルは鋼板を含み、前記補助パネルは、表面材（５２）と、振動絶縁材（５４）を介して前記表面材に取り付けられた磁石（５６）とを備え、前記補助パネルは前記磁石によって前記パネルの外側表面に取り付けられ、前記表面材と前記パネルとは離間していることを特徴とする。   According to another aspect of the present invention, in the above configuration, the panel further includes an auxiliary panel (48) attached to the outer surface of the panel, the panel including a steel plate, the auxiliary panel including a surface material (52), and a vibration insulating material A magnet (56) attached to the surface material via (54), the auxiliary panel is attached to the outer surface of the panel by the magnet, and the surface material and the panel are separated from each other. It is characterized by.

この構成によれば、パネルから固体を介して表面材へ向かう振動が絶縁ないし低減されるため、仮囲いを直線的に透過する騒音を低減することができる。また、既存の仮囲いに対する追加の騒音対策として、容易に施工することができる。   According to this configuration, since vibration from the panel toward the surface material through the solid is insulated or reduced, noise that is linearly transmitted through the temporary enclosure can be reduced. Moreover, it can construct easily as an additional noise countermeasure with respect to the existing temporary enclosure.

本発明の他の側面は、上記構成において、前記補助パネルは、前記表面材と前記パネルとの間に配置されるように前記表面材に取り付けられる吸音材（５０）をさらに有することを特徴とする。   According to another aspect of the present invention, in the above configuration, the auxiliary panel further includes a sound absorbing material (50) attached to the surface material so as to be disposed between the surface material and the panel. To do.

この構成によれば、パネルから空気を介して表面材へ向かう振動が低減されるため、仮囲いを直線的に透過する騒音をさらに低減することができる。   According to this configuration, since vibration from the panel toward the surface material via air is reduced, it is possible to further reduce noise that is linearly transmitted through the temporary enclosure.

本発明の他の側面は、上記構成において、前記振動絶縁材は、前記吸音材からなることを特徴とする。   Another aspect of the present invention is characterized in that, in the above configuration, the vibration insulating material is made of the sound absorbing material.

この構成によれば、部材点数を減らし、補助パネルの製造コストを抑制することができる。   According to this structure, the number of members can be reduced and the manufacturing cost of an auxiliary panel can be suppressed.

本発明の他の側面は、上記構成において、前記パネルは、正面視で矩形の複数の第１板材（２２）から形成され、隣接する前記第１板材は、互いの側面が当接するように配置されており、前記補助パネルの前記表面材は、前記１板材と同形の複数の第２板材（５０）から形成され、隣接する前記第２板材は、互いの側面が当接するように配置されており、隣接する前記第１板材の互いの当接面と、隣接する前記第２板材の互いの当接面とは、正面視で互いにずれていることを特徴とする。   According to another aspect of the present invention, in the above-described configuration, the panel is formed of a plurality of first plate members (22) that are rectangular in a front view, and the adjacent first plate members are disposed so that the side surfaces abut against each other. The surface material of the auxiliary panel is formed from a plurality of second plate members (50) having the same shape as the one plate member, and the adjacent second plate members are arranged so that the side surfaces thereof are in contact with each other. Further, the contact surfaces of the adjacent first plate members and the contact surfaces of the adjacent second plate members are shifted from each other in a front view.

仮囲いは、仮設構造物であるのが一般的であり、ある現場で使われた部材は、解体後、他の現場でも用いられ得る。そのため、パネルを構成する第１板材に歪みが生じ、第１板材の当接面に隙間が生じる場合がある。この構成によれば、このような隙間が生じた場合であっても、その隙間を覆うように補助パネルが存在するため、仮囲いを透過する騒音を抑制することができる。また、補助パネル全体に比べると個々の第２板材は軽いため、個々の第２板材ごとに取り付けおよび取り外しをすることにより、施工性が良くなる。   The temporary enclosure is generally a temporary structure, and a member used at one site can be used at another site after dismantling. Therefore, distortion may occur in the first plate material constituting the panel, and a gap may be generated in the contact surface of the first plate material. According to this configuration, even when such a gap is generated, the auxiliary panel is present so as to cover the gap, so that noise transmitted through the temporary enclosure can be suppressed. Moreover, since each 2nd board | plate material is light compared with the whole auxiliary | assistant panel, workability | operativity improves by attaching and removing for every 2nd board | plate material.

本発明の他の側面は、上記構成において、上端側又は下端側の一方又は双方で、前記補助パネルを前記パネルに固定する固定手段（５８）をさらに備えたことを特徴とする。   Another aspect of the present invention is characterized in that, in the above-described configuration, a fixing means (58) for fixing the auxiliary panel to the panel is further provided on one or both of the upper end side and the lower end side.

この構成によれば、補助パネルの落下や盗難を防止できる。   According to this configuration, the auxiliary panel can be prevented from falling or being stolen.

本発明のある側面は、工事現場用仮囲いに取り付けられる共鳴器型の先端改良型消音器（２４）であって、列をなし、かつ上下方向に延在する複数の共鳴管（２８，３０）が形成された本体（２６）と、前記本体の側壁の外側に固定され、かつ単管パイプに係合可能なフック（４４）とを備え、前記複数の共鳴管の少なくとも一部は、互いの凸部が当接するように重ね合わせられた複数の波板（３４，３８）から形成されることを特徴とする先端改良型消音器である。   One aspect of the present invention is a resonator-type tip improved silencer (24) attached to a temporary enclosure for a construction site, and a plurality of resonance tubes (28, 30) extending in a vertical direction in a row. ) And a hook (44) fixed to the outside of the side wall of the main body and engageable with a single pipe, at least a part of the plurality of resonance tubes are mutually connected. It is formed from a plurality of corrugated plates (34, 38) that are superposed so that their convex portions come into contact with each other.

この構成によれば、先端改良型消音器は、ハニカム構造の共鳴管を有するように容易に製造することができるとともに、工事用仮囲いへの取り付け及び取り外しが容易になる。   According to this configuration, the improved silencer can be easily manufactured to have a honeycomb-structured resonance tube, and can be easily attached to and detached from the temporary work enclosure.

本発明の実施形態に係る工事用仮囲いの防音構造の模式的側面図である。It is a typical side view of the soundproof structure of the temporary enclosure for construction which concerns on embodiment of this invention. 本発明の実施形態に係る先端改良型消音器の斜視図であるIt is a perspective view of the tip improved type silencer concerning an embodiment of the present invention. 本発明の実施形態に係る先端改良型消音器の平面図である。It is a top view of the tip improvement type silencer concerning an embodiment of the present invention. 図３におけるＩＶ−ＩＶ断面の断面図である。It is sectional drawing of the IV-IV cross section in FIG. 本発明の実施形態に係るパネル及び補助パネルの拡大平面図であり、先端改良型消音器および遮音カバーは省略している。FIG. 3 is an enlarged plan view of a panel and an auxiliary panel according to an embodiment of the present invention, in which a tip improved silencer and a sound insulation cover are omitted.

以下、図面を参照して本発明の実施形態について説明する。以下の説明において、仮囲いの設置位置に対して工事現場敷地内の方向を内側といい、工事現場敷地外の方向を外側という。図１は、本発明の実施形態に係る工事用仮囲いの防音構造２を模式的に描いた側面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the direction inside the construction site with respect to the installation position of the temporary enclosure is referred to as the inside, and the direction outside the construction site is referred to as the outside. FIG. 1 is a side view schematically showing a soundproof structure 2 of a temporary enclosure for construction according to an embodiment of the present invention.

仮囲い４は、支持骨組材６を備える。支持骨組材６は、複数の単管パイプをクランプ（図示せず）等で連結して形成される。杭単管８は、上部が地表面から突出するように地面に固定される。杭単管８は、仮囲い４の設置面に沿って２列に配置され、内側杭単管８ａと、内側杭単管８ａよりも外側に配置された外側杭単管８ｂとを含む。互いに最も近接する内側杭単管８ａと外側杭単管８ｂとは、仮囲い４の設置面に直交する方向に整合している。水平つなぎ単管１０は、地表面付近で水平に配置され、両端部において、仮囲い４の設置面に直交する方向に整合している内側杭単管８ａ及び外側杭単管８ｂに連結される内外方向水平つなぎ単管１０ａと、仮囲い４の設置面に沿って配置されるように内側杭単管８ａの各々に連結される横方向水平つなぎ単管１０ｂとを含む。複数の支柱単管１２の各々は、鉛直に配置されるように、下端側において外側杭単管８ｂに連結される。複数の布単管１４の各々は、複数の支柱単管１２の外側において支柱単管１２と交差し、水平に配置されるように支柱単管１２に連結される。支柱単管１２と布単管１４とは、組み合わさって格子状の骨組を形成している。控え単管１６は、上端側において支柱単管１２の上下方向中間位置に連結され、下端側においてその支柱単管１２に最も近接する内側杭単管８ａ近傍で内外方向水平つなぎ単管１０ａに連結され、地表面に対して傾斜している。   The temporary enclosure 4 includes a support frame material 6. The supporting frame member 6 is formed by connecting a plurality of single pipe pipes with a clamp (not shown) or the like. The pile single pipe 8 is fixed to the ground so that the upper part protrudes from the ground surface. The pile single pipe 8 is arrange | positioned in two rows along the installation surface of the temporary enclosure 4, and contains the inner pile single pipe 8a and the outer pile single pipe 8b arrange | positioned outside the inner pile single pipe 8a. The inner pile single pipe 8 a and the outer pile single pipe 8 b that are closest to each other are aligned in a direction perpendicular to the installation surface of the temporary enclosure 4. The horizontal connecting single pipe 10 is horizontally arranged near the ground surface, and is connected to both the inner pile single pipe 8a and the outer pile single pipe 8b aligned in the direction orthogonal to the installation surface of the temporary enclosure 4 at both ends. It includes an inner / outer horizontal connecting single pipe 10a and a horizontal horizontal connecting single pipe 10b connected to each of the inner pile single pipes 8a so as to be arranged along the installation surface of the temporary enclosure 4. Each of the plurality of single column pipes 12 is connected to the outer pile single tube 8b on the lower end side so as to be arranged vertically. Each of the plurality of cloth single tubes 14 crosses the column single tubes 12 outside the plurality of column single tubes 12 and is connected to the column single tubes 12 so as to be disposed horizontally. The single column 12 and the single fabric 14 are combined to form a lattice frame. The stand-up single pipe 16 is connected to the vertical intermediate position of the support single pipe 12 on the upper end side and connected to the inner and outer horizontal connection single pipe 10a in the vicinity of the inner pile single pipe 8a closest to the support single pipe 12 on the lower end side. And inclined with respect to the ground surface.

本実施形態の支持骨組材６は、支柱単管１２の上部内側でその支柱単管１２と交差し、仮囲い４に沿って水平方向に延在するように支柱単管１２に連結された横部材１８をさらに備える。本実施形態では、横部材１８は、図１に示すように上下に２列になるように配置される単管パイプであるが、１列でもよく、また３列以上になるように配置されてもよく、単管パイプ以外の長尺材、例えば型鋼材を用いてもよい。   The support frame 6 of the present embodiment crosses the single column 12 at the upper inside of the single column 12 and is connected to the single column 12 so as to extend horizontally along the temporary enclosure 4. A member 18 is further provided. In the present embodiment, the horizontal members 18 are single pipe pipes arranged in two rows up and down as shown in FIG. 1, but may be one row or arranged in three or more rows. Alternatively, a long material other than a single pipe may be used, for example, a die steel material.

なお、横方向水平つなぎ単管１０ｂ、布単管１４及び横部材１８は、仮囲い４の横方向長さにあわせて、複数の単管パイプを継ぎ合わせて形成される。また、内側杭単管８ａ、外側杭単管８ｂ及び横方向水平つなぎ単管１０ｂに代えて、Ｈ型鋼等の重量のある２つの長尺材を仮囲い４の設置面に沿って２列に並べて、支柱単管１２及び控え単管１６の下端側をこれらに固定してもよい。   The horizontal horizontal connecting single pipe 10 b, the single cloth pipe 14, and the horizontal member 18 are formed by joining a plurality of single pipes according to the horizontal length of the temporary enclosure 4. Moreover, instead of the inner pile single pipe 8a, the outer pile single pipe 8b, and the horizontal horizontal connecting single pipe 10b, two heavy materials such as H-shaped steel are arranged in two rows along the installation surface of the temporary enclosure 4. You may arrange in parallel and may fix the lower end side of the support | pillar single tube 12 and the stand-alone single tube 16 to these.

仮囲い４は、支持骨組材６の外側の面に取り付けられたパネル２０をさらに備える。パネル２０は、各々が布単管１４に取り付けられた複数の第１板材２２から形成される。第１板材２２は、鉛直方向に長辺を有する矩形の鋼板からなり、隣接する第１板材２２は、互いの側面において略隙間なく当接している（図５参照）。   The temporary enclosure 4 further includes a panel 20 attached to the outer surface of the support frame 6. The panel 20 is formed of a plurality of first plate members 22 each attached to the cloth single tube 14. The 1st board | plate material 22 consists of a rectangular steel plate which has a long side in a perpendicular direction, and the adjacent 1st board | plate material 22 is contact | abutted in the mutual side surface with substantially no clearance gap (refer FIG. 5).

仮囲い４は、建設現場や資材置場等の工事現場を取り囲むように設置され、工事現場を外部から遮蔽し、工事現場内で発生した騒音が外部に漏れることを低減する。また、仮囲い４には、図示しない出入口が設けられる。   The temporary enclosure 4 is installed so as to surround a construction site such as a construction site or a material storage area, shields the construction site from the outside, and reduces noise generated inside the construction site from leaking to the outside. In addition, the temporary enclosure 4 is provided with an entrance (not shown).

先端改良型消音器２４が、仮囲い４の上端近傍内側に配置される。図２〜図４は、本実施形態の先端改良型消音器２４の斜視図、平面図及び断面図である。図２〜図４に示すように、本実施形態の先端改良型消音器２４は、共鳴現象を利用して騒音を減少させる装置であり、箱型の本体２６内に、上下方向に延在する複数の第１共鳴管２８と複数の第２共鳴管３０とを備える。第２共鳴管３０の上下方向長さは、第１共鳴管２８の上下方向長さよりも短い。複数の第１共鳴管２８は、互いに隣接するようにパネル２０の横方向に沿って配列され、複数の第２共鳴管３０は、複数の第１共鳴管２８の列よりも内側において互いに隣接するようにパネル２０の横方向に沿って配列される。第１共鳴管２８及び第２共鳴管３０は、共に上端が開放され、下端に底を有する有底管である。   A tip improved silencer 24 is disposed inside the vicinity of the upper end of the temporary enclosure 4. 2 to 4 are a perspective view, a plan view, and a cross-sectional view of the tip improved silencer 24 of the present embodiment. As shown in FIG. 2 to FIG. 4, the tip improved silencer 24 of the present embodiment is a device that reduces noise using a resonance phenomenon, and extends vertically in a box-shaped main body 26. A plurality of first resonance tubes 28 and a plurality of second resonance tubes 30 are provided. The vertical length of the second resonance tube 30 is shorter than the vertical length of the first resonance tube 28. The plurality of first resonance tubes 28 are arranged along the lateral direction of the panel 20 so as to be adjacent to each other, and the plurality of second resonance tubes 30 are adjacent to each other inside the row of the plurality of first resonance tubes 28. As described above, they are arranged along the horizontal direction of the panel 20. The first resonance tube 28 and the second resonance tube 30 are both bottomed tubes having an open upper end and a bottom at the lower end.

本体２６の形成方法について説明する。外側から順に、第１の上下方向長さを有する第１平板３２、第１の上下方向長さを有する２枚の第１波板３４、第１の上下方向長さを有する第２平板３６、第１の上下方向長さより短い第２の上下方向長さを有する２枚の第２波板３８、第２の上下方向長さを有する第３平板４０を上端が整合するように重ね合わせて固定する。ここで、隣接する第１波板３４同士、並びに第２波板３８同士は、互いの凸部が当接するように重ね合わせられる。また、２段になった下端のそれぞれに第４平板４２を取り付けて底を形成する。なお、第４平板４２の各々の第１及び第２共鳴管２８，３０に対応する位置に、または、第１及び第２波板、並びに第１〜第３平板の下端に、雨水を排出するための小孔を設けておくことが好ましい。このようにして、図２〜図４に示すようなハニカム構造の第１共鳴管２８及び第２共鳴管３０を備えた本体２６が形成される。なお、第２平板３６の上部を省略して、第１波板３４と第２波板３８とを互いの凸部が重なるように当接させ、２段の底を有して第１共鳴管２８と第２共鳴管３０とが混合し両者の境界がない形状の共鳴管の列を設けても良い。また、第１波板３４及び第２波板３８の一方又は双方の数を増減させて、第１共鳴管２８及び第２共鳴管３０の列の数を増減させてもよい。第１及び第２波板３４，３８並びに第１〜第４平板３２，３６，４０，４２は、ポリカーボネート、繊維強化プラスチック（ＦＲＰ）、硬質塩化ビニル等の樹脂や、金属等を素材とすることができる。   A method for forming the main body 26 will be described. In order from the outside, a first flat plate 32 having a first vertical length, two first corrugated plates 34 having a first vertical length, a second flat plate 36 having a first vertical length, Two second corrugated plates 38 having a second vertical length shorter than the first vertical length and a third flat plate 40 having a second vertical length are overlapped and fixed so that their upper ends are aligned. To do. Here, the adjacent first corrugated plates 34 and the second corrugated plates 38 are overlapped with each other such that their convex portions come into contact with each other. Moreover, the 4th flat plate 42 is attached to each of the lower end which became two steps, and a bottom is formed. In addition, rainwater is discharged | emitted to the position corresponding to each 1st and 2nd resonance pipes 28 and 30 of the 4th flat plate 42, or the 1st and 2nd corrugated plate and the lower end of the 1st-3rd flat plate. It is preferable to provide a small hole for this purpose. Thus, the main body 26 including the first resonance tube 28 and the second resonance tube 30 having a honeycomb structure as shown in FIGS. 2 to 4 is formed. Note that the upper portion of the second flat plate 36 is omitted, and the first corrugated plate 34 and the second corrugated plate 38 are brought into contact with each other so that their convex portions overlap with each other, and the first resonance tube has a two-step bottom. 28 and the second resonance tube 30 may be mixed, and a row of resonance tubes having a shape with no boundary between them may be provided. Alternatively, the number of the first resonance tube 28 and the second resonance tube 30 may be increased or decreased by increasing or decreasing the number of one or both of the first wave plate 34 and the second wave plate 38. The first and second corrugated plates 34, 38 and the first to fourth flat plates 32, 36, 40, 42 are made of a resin such as polycarbonate, fiber reinforced plastic (FRP), hard vinyl chloride, or a metal. Can do.

第１共鳴管２８及び第２共鳴管３０の上下方向長さは、それぞれ、約９２５ｍｍ及び約５１０ｍｍである。２つの第１波板３４で形成された第１共鳴管２８ａ及び２つの第２波板３８で形成された第２共鳴管３０ａの内外方向の内径は約１５０ｍｍである。また、第１波板３４と第１平板３２又は第２平板３６とで形成された第１共鳴管２８ｂ、及び第２波板３８と第２平板３６又は第３平板４０とで形成された第２共鳴管３０ｂ内径は約７５ｍｍである。   The vertical lengths of the first resonance tube 28 and the second resonance tube 30 are about 925 mm and about 510 mm, respectively. The inner diameter of the first resonance tube 28a formed by the two first wave plates 34 and the second resonance tube 30a formed by the two second wave plates 38 is about 150 mm. Also, a first resonance tube 28b formed by the first corrugated plate 34 and the first flat plate 32 or the second flat plate 36, and a second resonant plate 28b formed by the second corrugated plate 38 and the second flat plate 36 or the third flat plate 40. The inner diameter of the two resonance tubes 30b is about 75 mm.

一端が開放された有底管である閉管型共鳴管は、ある音波の半波長の整数倍にその波長の４分の１を加えた長さが、共鳴管の長さに開口端補正（共鳴管の半径の約０．８倍）を加えた長さに一致する場合に、その音波と共鳴する。すなわち、０以上の整数をｎ、音波の波長をλ（ｍｍ）、共鳴管の管長をＬ（ｍｍ）、開口端補正をΔＬ（ｍｍ）とすると、
（ｎ／２＋１／４）λ＝Ｌ＋ΔＬ
が成立するとき、共鳴管と音波とは共鳴する。本実施形態では、第１共鳴管２８では、概ね２５０Ｈｚ前後（２５０Ｈｚオクターブバンド）の音波の騒音を主対象として低減させ、第２共鳴管３０では、概ね５００Ｈｚ前後（５００Ｈｚオクターブバンド）の音波の騒音を主対象として低減させるように、上下方向長さは、主対象の音波の波長の概ね３／４（上記の式でｎ＝１）になるように設定されている。なお、主対象の音波だけでなく、上記式を満たす音波も消音ないし減音される。 A closed tube type resonance tube, which is a bottomed tube with one open end, has a length that is an integral multiple of a half wavelength of a certain sound wave plus a quarter of that wavelength. Resonates with the sound wave when it matches the length of the tube plus about 0.8 times the radius of the tube. That is, if an integer of 0 or more is n, the wavelength of the sound wave is λ (mm), the length of the resonance tube is L (mm), and the opening end correction is ΔL (mm),
(N / 2 + 1/4) λ = L + ΔL
When is established, the resonance tube and the sound wave resonate. In the present embodiment, the first resonance tube 28 reduces sound noise of approximately 250 Hz (250 Hz octave band) as a main target, and the second resonance tube 30 reduces sound noise of approximately 500 Hz (500 Hz octave band). The length in the vertical direction is set to be approximately 3/4 of the wavelength of the sound wave of the main object (n = 1 in the above equation). Note that not only the main target sound wave but also the sound wave satisfying the above expression is muted or reduced.

なお、第１共鳴管２８及び第２共鳴管３０を上下の端部が開放された開管型の共鳴管としてもよい。開管型の共鳴管は、ある音波の半波長の整数倍が共鳴管の長さに両端の開口端補正を加えた長さに一致する場合に、その音波と共鳴する。したがって、開管型の共鳴管を用いる場合は、その上下方向長さが変更される。なお、騒音が第１共鳴管２８及び第２共鳴管３０の中を通って外部に漏れることを防ぐため、有底の閉管型の共鳴管を用いるほうが望ましい。   The first resonance tube 28 and the second resonance tube 30 may be open tube type resonance tubes with upper and lower ends opened. An open tube type resonance tube resonates with a sound wave when an integral multiple of a half-wavelength of a certain sound wave matches the length of the resonance tube plus opening end corrections at both ends. Therefore, when an open tube type resonance tube is used, its vertical length is changed. In order to prevent noise from leaking outside through the first resonance tube 28 and the second resonance tube 30, it is desirable to use a closed tube-type resonance tube with a bottom.

先端改良型消音器２４は、本体２６の外側外壁を構成する第１平板３２に固定されたフック４４をさらに備える。フック４４は、上下２列の横部材１８に上方から係合するように、下方が開放されたＵ字状を呈し、上下２段に配列される。各列には、２個以上のフック４４が設けられる。横部材１８の列を１列又は３列以上に変更した場合は、フック４４もそれに合わせて１段又は３段以上に配列される。   The improved tip silencer 24 further includes a hook 44 fixed to the first flat plate 32 constituting the outer outer wall of the main body 26. The hooks 44 have a U-shape with the lower part opened so as to be engaged with the two horizontal members 18 in the upper and lower rows, and are arranged in two upper and lower stages. Each row is provided with two or more hooks 44. When the row of the horizontal members 18 is changed to one row or three or more rows, the hooks 44 are also arranged in one row or three or more rows in accordance therewith.

図１に示すように、フック４４を支持骨組材６の内側において横部材１８に上方から係合させることによって、先端改良型消音器２４は、支持骨組材６に取り付けられる。このとき、先端改良型消音器２４の上端は、パネル２０の上端よりも高い位置に配置される。これにより、共鳴による防音効果だけでなく、高さの嵩上げによる防音効果を得ることができる。なお、先端改良型消音器２４の上端を、パネル２０の上端と同じ高さに配置してもよく、この場合でも共鳴による防音効果を得られる。   As shown in FIG. 1, the front end improved silencer 24 is attached to the support frame 6 by engaging the hook 44 with the cross member 18 from above inside the support frame 6. At this time, the upper end of the improved tip silencer 24 is arranged at a position higher than the upper end of the panel 20. Thereby, not only the soundproofing effect by resonance but also the soundproofing effect by raising the height can be obtained. Note that the upper end of the improved silencer 24 may be arranged at the same height as the upper end of the panel 20, and in this case, a soundproofing effect due to resonance can be obtained.

図１に示すように、本実施形態に係る防音構造２は、パネル２０と先端改良型消音器２４との隙間を塞ぐ遮音カバー４６をさらに備える。遮音カバー４６は、樹脂や金属等を素材として平板状を呈する素材の他、防音シート等の遮音性のある素材から形成される。遮音カバー４６は、外側端部がパネル２０の上端に当接し、内側端部が先端改良型消音器２４の外側外壁をなす第１平板３２に当接している。遮音カバー４６は、クリップ、ねじ、粘着テープ、面ファスナー及びフック等によりパネル２０及び先端改良型消音器２４に固定される。パネル２０及び先端改良型消音器２４の外側外壁をなす第１平板３２の一方又は双方が鋼材を素材とする場合には、鋼材に対して磁石で固定してもよい。遮音カバー４６は、略水平に配置されるか、又は雨水を排出しやすいように内側又は外側に向かうにつれて下方に向かうように傾斜させて配置される。工事敷地外に雨水が流れるのを防止するために遮音カバー４６を内側に傾斜させる場合、遮音カバー４６の内側側縁近傍に排水孔（図示せず）を設けるなどの排水対策を行ってもよい。また、遮音カバー４６は、パネル２０及び先端改良型消音器２４を支持骨組材６に取り付けた後に両者に取り付けてもよく、また、あらかじめ先端改良型消音器２４に固定しておき、先端改良型消音器２４を支持骨組材６に取り付けることによって、パネル２０の上端に当接するようにしてもよい。   As shown in FIG. 1, the soundproof structure 2 according to the present embodiment further includes a sound insulation cover 46 that closes a gap between the panel 20 and the improved tip silencer 24. The sound insulation cover 46 is formed from a material having a sound insulation property such as a soundproof sheet in addition to a flat plate material made of resin, metal, or the like. The sound insulation cover 46 has an outer end in contact with the upper end of the panel 20, and an inner end in contact with the first flat plate 32 that forms the outer outer wall of the tip improved silencer 24. The sound insulation cover 46 is fixed to the panel 20 and the improved tip silencer 24 by clips, screws, adhesive tape, hook-and-loop fasteners, hooks, and the like. When one or both of the panel 20 and the first flat plate 32 forming the outer outer wall of the tip improved silencer 24 are made of steel, they may be fixed to the steel with magnets. The sound insulation cover 46 is disposed substantially horizontally, or is inclined so as to be directed downward toward the inner side or the outer side so as to easily discharge rainwater. When the sound insulating cover 46 is inclined inward to prevent rainwater from flowing outside the construction site, drainage measures such as providing a drain hole (not shown) near the inner side edge of the sound insulating cover 46 may be taken. . The sound insulation cover 46 may be attached to the support frame 6 after the panel 20 and the improved tip silencer 24 are attached to the support frame 6, or fixed to the improved tip silencer 24 in advance. You may make it contact | abut on the upper end of the panel 20 by attaching the silencer 24 to the support frame material 6. FIG.

このように、先端改良型消音器２４を、仮囲い４の上部に設置することによって、仮囲い４を乗り越えて工事現場の外部の地表面に向かう騒音を低減できる。さらに、遮音カバー４６を設けることにより、パネル２０と先端改良型消音器２４との隙間から騒音が漏れることを防止できる。   In this way, by installing the improved tip silencer 24 on the upper portion of the temporary enclosure 4, it is possible to reduce noise traveling over the temporary enclosure 4 toward the ground surface outside the construction site. Furthermore, by providing the sound insulation cover 46, it is possible to prevent noise from leaking through the gap between the panel 20 and the tip improved silencer 24.

図５は、先端改良型消音器２４及び遮音カバー４６を省略した平面図であり、パネル２０及び補助パネル４８の構成を示す。図１及び図５に示すように、本実施形態に係る防音構造２は、パネル２０の外面に取り付けられる補助パネル４８をさらに備える。補助パネル４８は、複数の第２板材５０から形成される表面材５２を含む。第２板材５０は、補助パネル４８の鉛直方向に長辺を有する矩形の鋼板からなり、その形状はパネル２０の第１板材２２と略同一である。第２板材５０の内側の全面には吸音材５４が取り付けられている。吸音材５４には、繊維やウレタン樹脂、その他のそれ自体は公知の吸音素材を用いることができる。第２板材５０の内側の４隅近傍には、吸音材５４を介して４つの磁石５６が取り付けられる。この場合、吸音材５４は、振動の伝達を絶縁ないし低減する振動絶縁材としても機能する。磁石５６は、吸音材５４に代えて、他の振動絶縁効果のある部材、例えばゴム材を介して第２板材５０に取り付けてもよい。   FIG. 5 is a plan view in which the improved end silencer 24 and the sound insulation cover 46 are omitted, and shows the configuration of the panel 20 and the auxiliary panel 48. As shown in FIGS. 1 and 5, the soundproof structure 2 according to the present embodiment further includes an auxiliary panel 48 attached to the outer surface of the panel 20. The auxiliary panel 48 includes a surface material 52 formed from a plurality of second plate members 50. The second plate member 50 is made of a rectangular steel plate having a long side in the vertical direction of the auxiliary panel 48, and the shape thereof is substantially the same as the first plate member 22 of the panel 20. A sound absorbing material 54 is attached to the entire inner surface of the second plate member 50. As the sound absorbing material 54, a fiber, urethane resin, or other known sound absorbing material can be used. Four magnets 56 are attached in the vicinity of the four corners inside the second plate member 50 via a sound absorbing material 54. In this case, the sound absorbing material 54 also functions as a vibration insulating material that insulates or reduces vibration transmission. The magnet 56 may be attached to the second plate member 50 via another member having a vibration insulating effect, for example, a rubber material, instead of the sound absorbing material 54.

第２板材５０は、磁石５６によって鋼材からなる第１板材２２に固定される。このとき、隣接する第２板材５０は、互いの側面において略隙間なく当接しており、その当接面は、内外方向から見て、すなわち正面視で、第１板材２２同士の当接面と互い違いになるようにずれている。そのため、第１板材２２同士の当接面の隙間を第２板材５０が覆い、その隙間から漏れ出る騒音を抑制することができる。補助パネル４８は、パネル２０の外側の面全体を覆っている。さらに、パネル２０と補助パネル４８との上端及び下端の一方又は双方をクランプ等の追加の固定手段５８で固定し、補助パネル４８の落下や盗難を防止してもよい。追加の固定手段５８は、その追加の固定手段５８を介してパネル２０から表面材５２に振動が伝わらないように設けられた振動絶縁材を含むことが好ましい。   The second plate member 50 is fixed to the first plate member 22 made of steel by a magnet 56. At this time, the adjacent second plate members 50 are in contact with each other without any gap between the side surfaces, and the contact surfaces are in contact with the contact surfaces of the first plate members 22 when viewed from the inside and outside directions, that is, in front view. They are staggered to stagger. Therefore, the 2nd board | plate material 50 covers the clearance gap between the contact surfaces of 1st board | plate materials 22, and the noise which leaks from the clearance gap can be suppressed. The auxiliary panel 48 covers the entire outer surface of the panel 20. Furthermore, one or both of the upper end and the lower end of the panel 20 and the auxiliary panel 48 may be fixed by additional fixing means 58 such as a clamp to prevent the auxiliary panel 48 from falling or being stolen. The additional fixing means 58 preferably includes a vibration insulating material provided so that vibration is not transmitted from the panel 20 to the surface material 52 via the additional fixing means 58.

パネル２０と表面材５２とは、吸音材５４を介した２重構造になっている。さらに、磁石５６と第２板材５０との間は、吸音材５４または振動絶縁材によって振動の伝達が抑制される。そのため、工事現場で発生した騒音が、パネル２０を振動させても、その振動は固体を通しては表面材５２に伝わらず、又は低減されて伝わる。また、パネル２０と表面材５２との間の空気を通して伝わる振動も吸音材５４で低減される。そのため、工事現場内の騒音によって生じる表面材５２の振動は小さく、表面材５２が空気を振動させて騒音を外部に伝達することを低減できる。すなわち、補助パネル４８によって、仮囲い４を直線的に透過する騒音を低減できる。また、補助パネル４８は、既存の仮囲い４に対する追加の騒音対策として、後から追加することも容易である。また、補助パネル４８は、全体として重量があるが、その重さは、個々の第２板材５０に分割される。補助パネル４８の取り付け及び取り外しは、個々の第２板材５０ごとに行われるため、施工性がよい。   The panel 20 and the surface material 52 have a double structure with a sound absorbing material 54 interposed therebetween. Further, vibration transmission is suppressed between the magnet 56 and the second plate member 50 by the sound absorbing material 54 or the vibration insulating material. Therefore, even if the noise generated at the construction site vibrates the panel 20, the vibration is not transmitted to the surface material 52 through the solid or is transmitted while being reduced. Further, the vibration transmitted through the air between the panel 20 and the surface material 52 is also reduced by the sound absorbing material 54. Therefore, the vibration of the surface material 52 caused by the noise in the construction site is small, and the transmission of the noise to the outside by the surface material 52 vibrating the air can be reduced. That is, the auxiliary panel 48 can reduce noise that passes through the temporary enclosure 4 linearly. The auxiliary panel 48 can be easily added later as an additional noise countermeasure for the existing temporary enclosure 4. Moreover, although the auxiliary panel 48 has a weight as a whole, the weight is divided | segmented into each 2nd board | plate material 50. FIG. Since attachment and removal of the auxiliary panel 48 are performed for each second plate member 50, workability is good.

工事現場で発生する騒音は、仮囲い４の上端での音波の回折によって生じる仮囲い４の上端を乗り越える経路と、仮囲い４を直線的に透過する経路とによって外部の地表付近に伝達される。本実施形態では、前者の経路を先端改良型消音器２４及び遮音カバー４６で低減させ、後者の経路を補助パネル４８によって低減させている。そのため、全体的に工事現場で発生する騒音を低減することができる。   Noise generated at the construction site is transmitted to the vicinity of the outside surface by a route over the upper end of the temporary enclosure 4 caused by diffraction of sound waves at the upper end of the temporary enclosure 4 and a route that passes through the temporary enclosure 4 linearly. . In the present embodiment, the former path is reduced by the tip improved silencer 24 and the sound insulation cover 46, and the latter path is reduced by the auxiliary panel 48. Therefore, the noise generated at the construction site as a whole can be reduced.

また、先端改良型消音器２４は、フック４４によって支持骨組材６に取り付けられ、補助パネル４８は、磁石５６によってパネル２０に取り付けられる。フック４４又は磁石５６による取付構造は、取付作業及び取外作業を容易かつ迅速に行えるため、設置及び解体を繰り返して複数の現場での使用が繰り返される仮設構造物である仮囲い４に適している。   Further, the improved tip silencer 24 is attached to the support frame 6 by a hook 44, and the auxiliary panel 48 is attached to the panel 20 by a magnet 56. The attachment structure using the hooks 44 or the magnets 56 can be easily and quickly attached and detached, and is therefore suitable for the temporary enclosure 4 that is a temporary structure that is repeatedly used at multiple sites by repeated installation and disassembly. Yes.

以上で具体的実施形態の説明を終えるが、本発明は上記実施形態に限定されることなく幅広く変形実施することができる。上記実施形態では、長さの異なる２つの共鳴管を用いたが、これを１つにし、または、３つ以上にして、仮囲い４に沿って並べてもよい。また、横部材１８を設置せずに、フック４４を布単管１４に係合させてもよい。また、補助パネル４８では、吸音材５４を省略してもよい。   Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. In the above embodiment, two resonance tubes having different lengths are used. However, the resonance tubes may be one or three or more and may be arranged along the temporary enclosure 4. Further, the hook 44 may be engaged with the single cloth tube 14 without installing the transverse member 18. In the auxiliary panel 48, the sound absorbing material 54 may be omitted.

２...防音構造、４...仮囲い、６...支持骨組材、１８...横部材、２０...パネル、２２...第１板材、２４...先端改良型消音器、２６...本体、２８...第１共鳴管、３０...第２共鳴管、３４...第１波板、３８...第２波板、４４...フック、４６...遮音カバー、４８...補助パネル、５０...第２板材、５２...表面材、５４...吸音材、５６...磁石、５８...追加の固定手段 2 ... Soundproof structure, 4 ... Temporary enclosure, 6 ... Support frame, 18 ... Cross member, 20 ... Panel, 22 ... First plate, 24 ... Improved tip Muffler, 26 ... main body, 28 ... first resonance tube, 30 ... second resonance tube, 34 ... first wave plate, 38 ... second wave plate, 44 ... hook 46 ... Sound insulation cover, 48 ... Auxiliary panel, 50 ... Second plate, 52 ... Surface material, 54 ... Sound absorbing material, 56 ... Magnet, 58 ... Additional fixing means

Claims (12)

長尺部材を組み合わせて形成された支持骨組材、及び工事現場を外部から遮蔽するべく前記支持骨組材に支持されたパネルを有する仮囲いと、
前記支持骨組材に支持され、前記支持骨組材に対して前記パネルの反対側、かつ前記パネルの上端近傍に配置される先端改良型消音器と、
前記パネルと前記先端改良型消音器との隙間を塞ぐ遮音カバーとを備え、
前記先端改良型消音器はフックを有し、前記フックは前記仮囲いに係合することを特徴とする工事現場用仮囲いの防音構造。 A support frame formed by combining long members, and a temporary enclosure having a panel supported by the support frame to shield the construction site from the outside;
A tip improved silencer that is supported by the support frame, and is disposed on the opposite side of the panel with respect to the support frame and in the vicinity of the upper end of the panel ;
A sound insulation cover that closes a gap between the panel and the tip improved silencer ;
The soundproof structure for a temporary enclosure for construction sites, wherein the improved silencer has a hook, and the hook engages with the temporary enclosure. 前記支持骨組材は、横方向に延在する横部材を有し、
前記フックは、前記横部材に係合することを特徴とする請求項１に記載の工事現場用仮囲いの防音構造。 The support frame has a transverse member extending in the transverse direction;
The soundproof structure for a temporary fence for a construction site according to claim 1 , wherein the hook is engaged with the lateral member. 前記先端改良型消音器は、その上端が前記パネルの上端から突出するように配置されることを特徴とする請求項１又は請求項２に記載の工事現場用仮囲いの防音構造。 The soundproof structure for a temporary enclosure for a construction site according to claim 1 or 2 , wherein the tip improved type silencer is arranged so that an upper end thereof protrudes from an upper end of the panel. 前記先端改良型消音器は、上下に延在する複数の共鳴管を有する共鳴器型の消音器であることを特徴とする請求項１〜請求項３のいずれか一項に記載の工事現場用仮囲いの防音構造。 The tip improved silencer for construction site according to any one of claims 1 to 3, characterized in that the resonator type silencer having a plurality of resonance pipes extending in the vertical Temporary enclosure soundproof structure. 前記複数の共鳴管の少なくとも一部は、互いの凸部が当接するように重ね合わせられた複数の波板から形成されることを特徴とする請求項４に記載の工事現場用仮囲いの防音構造。 5. The soundproofing of the temporary enclosure for construction sites according to claim 4 , wherein at least a part of the plurality of resonance tubes is formed of a plurality of corrugated plates that are superposed so that their convex portions abut each other. Construction. 前記共鳴管は、第１の上下方向長さを有する複数の第１共鳴管と、前記第１の上下方向長さよりも短い第２の上下方向長さを有する複数の第２共鳴管とを含み、
前記複数の第１共鳴管は、互いに隣接するように前記パネルの横方向に沿って配列され、前記複数の第２共鳴管は、前記複数の第１共鳴管の列よりも内側において互いに隣接するように前記パネルの横方向に沿って配列されたことを特徴とする請求項４又は請求項５に記載の工事現場用仮囲いの防音構造。 The resonance tube includes a plurality of first resonance tubes having a first vertical length, and a plurality of second resonance tubes having a second vertical length shorter than the first vertical length. ,
The plurality of first resonance tubes are arranged along the lateral direction of the panel so as to be adjacent to each other, and the plurality of second resonance tubes are adjacent to each other inside the row of the plurality of first resonance tubes. The soundproof structure for a temporary enclosure for a construction site according to claim 4 or 5 , wherein the soundproof structure is arranged along a horizontal direction of the panel. 前記パネルの外面に取り付けられる補助パネルをさらに備え、
前記パネルは鋼板を含み、
前記補助パネルは、表面材と、振動絶縁材を介して前記表面材に取り付けられた磁石とを備え、
前記補助パネルは前記磁石によって前記パネルの外側表面に取り付けられ、前記表面材と前記パネルとは離間していることを特徴とする請求項１〜請求項６のいずれか一項に記載の工事現場用仮囲いの防音構造。 An auxiliary panel attached to the outer surface of the panel;
The panel includes a steel plate;
The auxiliary panel includes a surface material and a magnet attached to the surface material via a vibration insulating material,
The construction site according to any one of claims 1 to 6 , wherein the auxiliary panel is attached to an outer surface of the panel by the magnet, and the surface material and the panel are separated from each other. Soundproof structure for temporary enclosures. 前記補助パネルは、前記表面材と前記パネルとの間に配置されるように前記表面材に取り付けられる吸音材をさらに有することを特徴とする請求項７に記載の工事現場用仮囲いの防音構造。 The soundproof structure for a temporary enclosure for a construction site according to claim 7 , wherein the auxiliary panel further includes a sound absorbing material attached to the surface material so as to be disposed between the surface material and the panel. . 前記振動絶縁材は、前記吸音材からなることを特徴とする請求項８に記載の工事現場用仮囲いの防音構造。 9. The soundproof structure for a temporary enclosure for a construction site according to claim 8 , wherein the vibration insulating material is made of the sound absorbing material. 前記パネルは、正面視で矩形の複数の第１板材から形成され、隣接する前記第１板材は、互いの側面が当接するように配置されており、
前記補助パネルの前記表面材は、前記第１板材と同形の複数の第２板材から形成され、隣接する前記第２板材は、互いの側面が当接するように配置されており、
隣接する前記第１板材の互いの当接面と、隣接する前記第２板材の互いの当接面とは、正面視で互いにずれていることを特徴とする請求項７〜請求項９のいずれか一項に記載の工事現場用仮囲いの防音構造。 The panel is formed from a plurality of first plate members that are rectangular in a front view, and the adjacent first plate members are arranged so that the side surfaces thereof are in contact with each other,
The surface material of the auxiliary panel is formed from a plurality of second plate materials having the same shape as the first plate material, and the adjacent second plate materials are arranged such that the side surfaces thereof are in contact with each other,
A contact surface of another adjacent the first plate member, and the abutment surface of another of said second plate member adjacent one of claims 7 to claim 9, characterized in that are offset from each other in front view The soundproof structure of the temporary enclosure for construction sites described in 1. 上端側又は下端側の一方又は双方で、前記補助パネルを前記パネルに固定する固定手段をさらに備えたことを特徴とする請求項７〜請求項１０のいずれか一項に記載の工事現場用仮囲いの防音構造。 The temporary construction site according to any one of claims 7 to 10 , further comprising fixing means for fixing the auxiliary panel to the panel on one or both of the upper end side and the lower end side. Soundproof structure of the enclosure. 工事現場用仮囲いに取り付けられる共鳴器型の先端改良型消音器であって、
列をなし、かつ上下方向に延在する複数の共鳴管が形成された本体と、
前記本体の側壁の外側に固定され、かつ単管パイプに係合可能なフックとを備え、
前記複数の共鳴管の少なくとも一部は、互いの凸部が当接するように重ね合わせられた複数の波板から形成されることを特徴とする先端改良型消音器。 Resonator-type improved tip silencer attached to a temporary enclosure for construction sites,
A main body formed with a plurality of resonance tubes in a row and extending in the vertical direction;
A hook fixed to the outside of the side wall of the main body and engageable with a single pipe;
At least a part of the plurality of resonance tubes is formed of a plurality of corrugated plates that are superposed so that their convex portions are in contact with each other.
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