JP2014118735A - Soundproof frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof frame that has a soundproof function and that can utilize an upper section as a work yard and a material yard.SOLUTION: A soundproof frame 1 enables entrance/exit of a pump vehicle M1, a concrete mixer truck M2 and the like having a noise generation source. The soundproof frame includes: a skeleton body 2 that is formed of a column 21 high enough to enable storage of the noise generation source, and a girder retainer 22, ... and a bearing girder 23, ... laid across an upper part of the column; a plurality of covering plates 4, ... for covering a top surface of the skeleton body; and soundproof sheets 5A and 5B that are openably/closably suspended from a side surface of the skeleton body.

Description

  The present invention relates to a soundproofing stand for preventing noise generated from a construction site or the like.

  At construction sites adjacent to houses, it is necessary to take measures to prevent construction machinery and noise generated during work from affecting the lives of neighboring residents. Therefore, in order to suppress the diffusion of the sound generated at the construction site, noise countermeasures have been implemented by providing a soundproof house and a soundproof enclosure (see Patent Documents 1-3).

  For example, Patent Document 1 discloses a noise countermeasure for constructing a large soundproof house with a roof that has a wall height of only 6.5 m so as to cover the entire construction site. Such a soundproof house with a roof is effective because the sound is prevented from spreading upward even if the adjacent house is a high-rise apartment.

  Further, Patent Document 2 discloses a noise countermeasure for covering a vehicle with a soundproof dome formed by a rod-shaped bag body filled with air in order to prevent noise caused by a vehicle having a large generated sound such as a concrete mixer truck.

  Furthermore, Patent Document 3 discloses a movable soundproofing visor in which a soundproofing panel is attached to the peripheral surface of a support frame that is movable with casters. Since this mobile soundproof box is open at the top, it cannot prevent the sound from spreading upward.

JP 2000-257184 A JP 2008-196216 A JP 2007-284946 A

  However, in the configuration disclosed in Patent Documents 1-3, there is an effect of suppressing noise to cover a construction site or a vehicle that is a noise generation source, but no further effect can be expected.

  On the other hand, construction work in urban areas is often performed in confined spaces, and if space is used only for soundproof houses and soundproof enclosures, it will be difficult to secure sufficient material storage and work yards on the site. .

  When the material storage area and the work yard are narrowed, the process must be subdivided, the work efficiency is lowered, the construction is prolonged, and the noise generation period is prolonged.

  Accordingly, an object of the present invention is to provide a soundproofing stand that has a soundproofing function and that can be used as a work yard or a material storage place in the upper part.

  In order to achieve the above object, a soundproofing stand of the present invention is a soundproofing stand capable of allowing a vehicle having a noise generation source to enter and exit, and has a column having a height capable of accommodating the noise generation source and an upper portion thereof. It is provided with a frame formed by a horizontal member to be bridged, a plurality of lining plates that cover the upper surface of the frame, and a soundproof sheet that is hung from the side of the frame so as to be openable and closable. And

  Here, the gap between the lining plates is preferably closed with a sealing material.

  The soundproofing stand of the present invention configured as described above is covered with a soundproofing sheet in which the side surface of the frame formed at a height that can accommodate the noise generation source of the vehicle is hung so as to be openable and closable, and the upper surface is covered. Covered with engineering board.

  For this reason, the noise generated from the noise generation source housed inside the framework is prevented from diffusing outside by the soundproof sheet and the lining plate. Moreover, it can be used for a work yard or a material storage place for assembling a formwork or a reinforcing bar on the lining plate.

  Further, by closing the gap between the lining plates with a sealing material, it is possible to effectively reduce the sound that escapes upward.

It is a perspective view for demonstrating the structure of the soundproofing stand of embodiment of this invention. It is a top view for demonstrating the structure of a soundproofing stand. It is sectional drawing seen in the AA arrow direction of FIG. It is sectional drawing seen in the BB arrow direction of FIG. It is explanatory drawing which showed the state which is using the soundproof stand as a work yard and a material storage place.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-4 is explanatory drawing shown in order to demonstrate the structure of the soundproofing stand 1 of this Embodiment.

  In the present embodiment, the pump car M1 and the mixer truck M2 used when placing concrete are described as vehicles having noise generation sources. The pump vehicle M1 is used to pressure-feed ready-mixed concrete conveyed by the mixer vehicle M2 to the concrete placement site. The noise at the time of pumping exceeds 100 dB, and is classified as the loudest sound generated in the construction site.

  The soundproofing base 1 of the present embodiment includes a frame 2 formed by a plurality of columns 21,... And a horizontal member spanned over the columns 21, and a plurality of lining plates that cover the upper surface of the frame 2. 4,..., And soundproof sheets 5 </ b> A and 5 </ b> B that are hung from the side of the skeleton 2 so as to be openable and closable.

  As shown in FIGS. 3 and 4, the skeleton 2 is built between columns 21,..., And columns 21,. The girder holders 22,... As the horizontal members to be passed and the girder holders 23,... As the horizontal members passed between the girder holders 22, 22 in the direction orthogonal to the axis of the girder 22. Mainly composed.

  The base 11 is formed of an H-shaped steel material or the like. Specifically, a plurality of bases 11,... Are laid in parallel on the ground within a range in which the framework 2 is constructed, with an interval. And the column 21 formed with a square steel pipe etc. is fixed to the upper surface of the base 11 with welding, a volt | bolt, etc.

  As shown in FIG. 3, the columns 21 are installed at intervals in the axial direction of the base 11. Although not shown, a vertical brace is disposed between the columns 21 and 21 as necessary.

  The height and interval of the columns 21 are set to a height and interval at which the mixer truck M2 can travel at least inside the soundproof gantry 1. For example, the height of the column 21 is set so that the height of the inner space of the soundproof frame 1 is 4 m or more. The distance between the columns 21 and 21 is set to about 4 m to 7 m.

  Further, a girder 22 formed of an H-shaped steel material or the like is bridged between the upper ends of the columns 21. That is, the girder 22 and the base 11 are arranged in parallel. Moreover, the column 21 and the girder 22 are joined by a fixing jig, a bolt, or the like.

  On the other hand, as shown in FIG. 2, receiving girders 23,... Formed by a plurality of H-shaped steel materials or the like are bridged between girder holders 22, 22 arranged at intervals. The girder 22 and the girder 23 are joined by a fixing jig, a bolt, or the like.

  .. Are set in accordance with the length of the lining plate 4 to be placed thereon. The lining plate 4 is a panel-like member in which a steel plate or the like is stretched on the upper surface of a rectangular frame member in plan view. The lining plate 4 is supported by placing the edge in the longitudinal direction on the receiving girders 23 and 23.

  A stopper (not shown) is provided on the lower surface side of the lining plate 4, and even if a lateral force acts on the installed lining plate 4, the stopper hits the receiving girders 23, 23 and moves. Therefore, the lining plate 4 is not displaced or dropped.

  As shown in FIG. 2, the lining plate 4 is installed so that the entire top surface of the soundproofing base 1 is covered. Although not shown, when there is a gap between the adjacent lining plates 4, 4, it is preferable to close with a sealing material such as a sound insulating tape or a sealing material.

  And the side surface of the frame 2 is covered with the soundproof sheets 5A and 5B. For the soundproof sheets 5A and 5B, a sheet material based on a cloth woven by synthetic resin fibers such as high-strength polyester yarn, a sheet material of asphalt base material, a sheet material of rubber base material, and the like can be used. In particular, a daylighting soundproofing sheet is preferable because the brightness inside the soundproofing frame 1 can be secured.

  The soundproof sheets 5A and 5B can be opened and closed at least at locations where the vehicle enters and exits by winding or lateral opening. Therefore, it is good also as a structure which cannot cover the location where a vehicle does not enter / exit among the side surfaces of the frame 2 with a soundproof panel etc., and cannot open and close.

  Further, as shown in FIG. 3, the soundproof sheets 5 </ b> A and 5 </ b> B are fixed to the upper edge of the skeleton 2 so that there is no gap between the soundproof sheets 5 </ b> A and 5 </ b> B. In the plan view of FIG. 2, in order to explain the configuration of the skeleton 2 in an easy-to-understand manner, the soundproof sheets 5 </ b> A and 5 </ b> B and the lining plate 4 are illustrated with a gap between them. This gap is closed by the upper edges of the soundproof sheets 5A and 5B.

  Further, the soundproof sheets 5A and 5B are formed to have a length that can contact the ground surface, as shown in FIG. Here, the soundproof sheet 5A illustrated in FIG. 1 stops at the height of the pump car M1, but is formed to have a length in contact with the ground surface without the pump car M1.

  Next, the concrete placement work at the construction site where the soundproofing gantry 1 of the present embodiment is constructed will be described.

  On the outer periphery of the construction site, a soundproof wall 3 is installed as shown in FIG. This sound barrier 3 attenuates the sound propagated laterally from the construction site to a certain extent, but since the upper part is open, it can be said that it is a sufficient noise countermeasure when a high-rise apartment is built nearby. Absent.

  Therefore, the soundproof frame 1 is constructed at a position adjacent to the site where the reinforced concrete structure 62 inside the soundproof wall 3 is constructed. The reinforced concrete structure 62 is, for example, a caisson constructed inside a mountain retaining wall 61 excavated from the ground.

  In this construction site, a tower crane 65 is installed adjacent to the soundproof frame 1. Further, depending on the work process, a crawler crane 64 is installed between the soundproofing gantry 1 and the construction location of the reinforced concrete structure 62.

  And since the upper surface of the soundproof stand 1 is covered with the lining board 4, ..., it can be used as the work yard S2. Further, it can be used as a material storage place S1 for installing materials such as reinforcing bars and formwork, and reinforcing bar cages assembled in the work yard S2.

  For example, the materials and equipment that have been transported to the construction site can be lowered onto the soundproof frame 1 by the tower crane 65. In addition, the rebar bar assembled in the work yard S <b> 2 can be lowered from the moving scaffold 63 by the crawler crane 64 and installed at the construction site of the reinforced concrete structure 62.

  As described above, if the upper surface of the soundproofing base 1 can be used as the work yard S2 or the material storage place S1, the vacant space can be effectively used to improve work efficiency.

  For example, the formwork and the reinforcing bars are normally assembled at the construction site of the reinforced concrete structure 62, but if there is a work yard S2 in the field, the assembly work can be performed collectively there.

  That is, if the reinforcing bar rod assembled in the work yard S2 is installed, the work in a narrow place is reduced and it is efficient. Moreover, since the work in the work yard S2 can be performed in parallel with the concrete placing work or the like at the construction site of the reinforced concrete structure 62, the work period can be shortened.

  Further, if the work yard S2 and the material storage place S1 can be secured on the soundproof frame 1, the number of pump cars M1 and mixer trucks M2 can be increased accordingly, so that the amount of placing concrete once is increased. Can do.

  If the concrete placement amount can be increased, the concrete placement process can be shortened and the construction period can be shortened. If the construction period can be shortened in this way, the noise generation period can be shortened and the influence on the neighborhood can be minimized.

  Next, concrete placement work will be described with reference to FIG. In order to place concrete, first, the pump car M1 is disposed between the soundproofing gantry 1 and the construction site of the reinforced concrete structure 62 (the position where the crawler crane 64 is installed in FIG. 5).

  The pump car M1 travels on the outer periphery of the soundproofing base 1 and is disposed at a predetermined position. In addition, if the inside space of the soundproofing base 1 has a size that does not hinder the traveling of the pump car M1, the inside of the soundproofing base 1 may be allowed to travel.

  Further, the soundproof sheet 5A adjacent to the position where the pump car M1 is stopped is wound up, and the side surface of the soundproof mount 1 is opened. The pump car M1 raises the boom M12 in advance.

  Then, the pump car M <b> 1 is backed and put into the soundproofing base 1. In the pump car M1, the rear pump part M11 is the largest noise generation source, and therefore the pump car M1 is backed until the pump part M11 is accommodated in the soundproof frame 1.

  Thus, after arrange | positioning the pump vehicle M1 in a predetermined position, 5 A of sound-insulation sheets which were wound up are lowered | hung, and it is in the state as shown in FIG. That is, the pump part M11 of the pump car M1 is accommodated in a place surrounded by the soundproof sheets 5A, 5B and the lining plates 4,.

  If the pump part M11 is disposed at a place surrounded by the soundproof sheets 5A and 5B and the lining plates 4,..., Diffusion of noise to the outside can be suppressed. In particular, the lining plate 4 manufactured using a steel plate or the like has a relatively large weight and a high sound insulation performance, so that the upward sound propagation can be greatly reduced.

  The ready-mixed concrete is supplied to the pump car M1 installed in this way by a mixer car M2 that enters from the entrance of the soundproofing stand 1 (not shown).

  The mixer truck M2 travels inside the soundproof gantry 1 to reach the position of the pump car M1, and the concrete discharging work is also performed inside the soundproof cradle 1. For this reason, since the sound which uses the mixer truck M2 as a noise generation source is shielded by the soundproof sheets 5A and 5B and the lining plates 4,..., The sound propagating to the outside can be greatly reduced.

  Thus, if the upper and side of the entire noise generation source such as the pump car M1 and the mixer truck M2 are covered with the lining plates 4,... And the soundproof sheets 5A and 5B, the noise generation source is partially covered. The soundproofing effect can be obtained more than twice as compared with the case of covering with a soundproofing sheet.

  For example, when the noise source is partially covered in a form such as a mobile soundproof fence disclosed in Patent Document 3, only a reduction effect of about 10 dB can be obtained. By installing the soundproof stand 1, a reduction effect of about 20 dB can be obtained.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

  For example, in the above-described embodiment, the pump vehicle M1 and the mixer vehicle M2 have been described as examples of vehicles having noise generation sources. However, the present invention is not limited to this, and vehicles having noise generation sources such as dump trucks and bulldozers are not limited thereto. Even so, the present invention can be applied.

1 Soundproof stand 2 Frame 21 Pillar 22 Girder holder (horizontal material)
23 Girder (Horizontal material)
4 Lining plate 5A, 5B Soundproof sheet M1 Pump car (vehicle)
M11 pump section (noise source)
M2 mixer truck (vehicle)
S1 Material storage area S2 Work yard

Claims (2)

A soundproofing stand capable of entering and leaving a vehicle having a noise source,
A framework formed by a pillar having a height capable of accommodating the noise generation source and a horizontal member spanned over the pillar;
A plurality of lining plates covering the upper surface of the skeleton;
A soundproofing pedestal comprising a soundproofing sheet suspended from the side of the frame so as to be openable and closable. The soundproofing pedestal according to claim 1, wherein a gap between the lining plates is closed with a sealing material.