JP2014077315A - Temporary scaffold with sound insulating material - Google Patents

Abstract

[PROBLEMS] To provide a temporary scaffold with a soundproof panel capable of sufficiently preventing noise leakage and effectively preventing dust from being scattered.
SOLUTION: In a temporary scaffold with a sound insulating material in which a sound insulating material is attached to the temporary scaffold, the sound insulating material attached to the temporary scaffold via a vibration isolating material is any one of a soundproof plate, a soundproof sheet, and a universal steel plate. Or a sound insulation material comprising a combination thereof, which is double-attached to the outer surface and the inner surface of the temporary scaffold, and the sound insulation material attached to the inner surface is formed with an openable / closable doorway communicating with the building A temporary scaffold was attached. It is also possible to attach a sound absorbing material to each back surface of the inner and outer double sound insulating materials and to the upper surface of the scaffold plate located at the upper end of the scaffold.
[Selection] Figure 2

Description

  The present invention relates to a temporary scaffold with a sound insulating material that suppresses leakage of noise generated with various building construction or dismantling construction in an urban area.

  Conventionally, for example, in a construction site in an urban area, as shown in FIG. 6, the noise of ground excavation work, the noise accompanying the construction or dismantling of buildings, etc., do not leak directly into the surroundings and become noise pollution. One in which a soundproof panel 102 is mounted on the outer periphery of the temporary scaffold 101 is known.

Since this soundproof panel 102 prevents noise pollution, it covers the entire outer periphery of the temporary scaffold. For example, in the case of a typhoon, strong wind pressure is applied to the soundproof panel by the strong wind, and the scaffold 101 is destroyed. May suffer damage.
For this reason, in order to avoid the influence of the wind, the soundproof panel 102 attached to the outer periphery of the temporary scaffold 101 is tilted substantially horizontally outward with the one end of the panel 102 as an axis. An opening / closing device 105 that is attached to the temporary scaffold 101 so as to be openable and closable and that opens and closes the soundproof panel 102 is connected to the soundproof panel 102 from the uppermost soundproof panel 102 in the vertical direction attached to the temporary scaffold 101. An improved temporary scaffold 100 with a soundproof panel shown in FIG. 7, which is composed of 103 and a hoisting device 104 for winding up the rope, has been proposed. (See Patent Document 1.)

  According to this, the temporary scaffold with a soundproof panel can be freely opened and closed to the pipe of the temporary scaffold so that the soundproof panel attached to the outer peripheral portion of the temporary scaffold tilts substantially horizontally with one end of the panel as an axis. Therefore, when the wind is strong, it is possible to expect an effect that the influence of the wind pressure can be eliminated by winding the rope with a hoisting device and making the soundproof panel substantially horizontal.

However, both of the conventional temporary scaffolds with soundproof panels shown in FIG. 6 and FIG. 7 are such that the soundproof panels are only mounted on the outer periphery of the temporary scaffolds, so that the soundproof performance is not sufficient, especially in buildings. In densely populated urban areas, there is a problem that noise leakage becomes serious.
In particular, the latter temporary scaffold with a soundproof panel employs a complicated configuration in which the soundproof panel can be freely opened and closed, so that the degree of sealing between the soundproof panels is reduced and noise leakage cannot be sufficiently prevented.

  Furthermore, if the building or dismantling object is a high-rise building, the dust scattering range will be wide, and the dust scattering countermeasure will be required more strictly.

JP 2004-197441 A

  The present invention was created to solve the various problems described above, and provides a temporary scaffold with a sound insulating material that can sufficiently prevent leakage of noise and also effectively prevent dust scattering. It is an object.

  The invention according to claim 1 is the temporary scaffold with a sound insulation material in which a sound insulation material is attached to the temporary scaffold, wherein the sound insulation material is a sound insulation plate material, a sound insulation sheet, a universal steel plate, or a combination thereof, It was set as the structure attached twice to the outer peripheral surface and inner peripheral surface of a temporary scaffold.

  The invention according to claim 2 is characterized in that the sound insulating material attached to the inner peripheral surface of the temporary scaffold is formed with an openable / closable doorway communicating with the building.

  The invention according to claim 3 is characterized in that the sound insulating material is attached to the temporary scaffold via a vibration isolating material.

  The invention according to claim 4 is characterized in that a sound absorbing material made of glass wool, rock wool, or the like is attached to each back surface of the double sound insulating material and an upper surface of the scaffold plate located at the upper end of the scaffold.

    In the invention according to claim 5, at least one intake blower is disposed on the top of the temporary scaffold with the sound insulating material, and a dust removing filter is attached to the sound insulating material located on the inner peripheral surface. A vent opening is formed.

  According to the first aspect of the present invention, since the sound insulation material has a double structure in which the inner and outer peripheral surfaces of the temporary scaffold are attached, the sound insulation performance is improved with a very simple configuration while suppressing the deterioration of the function of the temporary scaffold as much as possible. It is possible to sufficiently prevent noise leakage due to construction work or dismantling work.

  According to the invention which concerns on Claim 2, since the doorway which can be opened and closed which communicates with a building is formed in the sound insulating material, it can freely go and go between the inside of the building and the temporary scaffold without deteriorating the sound insulating performance. As a result, work efficiency can be improved.

  According to the third aspect of the invention, since the sound insulating material is attached to the temporary scaffold via the vibration isolating material, it is difficult to transmit the vibration of the sound insulating material to the temporary scaffold and to reduce noise propagation to the outside. In addition, it is possible to prevent the temporary scaffold from resonating at a frequency in a specific band, thereby ensuring stable independence of the temporary scaffold.

  According to the invention which concerns on Claim 4, by attaching a sound-absorbing material to the back surface of a sound-insulating material, the sound which permeate | transmitted from the inner peripheral side sound-insulating material to the air layer is absorbed by a sound-absorbing material, and sound insulation performance is improved more. be able to. Further, since the sound absorbing material is attached to the upper surface of the upper end of the scaffold, it is possible to absorb the diffracted sound from the upper end and effectively reduce noise propagation to the outside.

  According to the invention which concerns on Claim 5, while the leakage of the noise accompanying construction, such as construction, is fully prevented, the scattering of the dust which generate | occur | produces simultaneously can also be prevented effectively.

It is a side view which shows the Example of the temporary scaffold with a sound-insulating material of this invention. It is a side view which shows the other Example of the temporary scaffold with a sound-insulating material of this invention. It is a front view of the normal sound insulation material of this invention. The drawing showing the sound insulating material in plan view is added to the upper side, and the drawing showing the sound insulating material in side view is added to the right. It is a front view of the sound insulation material which comprises the doorway which can be opened and closed of this invention. The drawing showing the sound insulating material in plan view is added to the upper side, and the drawing showing the sound insulating material in side view is added to the right. It is a figure which shows the measurement result of the sound transmission loss in a laboratory at the time of installing a sound insulating material on both surfaces and one side of a temporary scaffold. It is a side view which shows the temporary scaffold with a sound insulating material of conventional invention. It is a side view which shows the temporary scaffold with a sound insulating material of the improved conventional invention.

In this embodiment, a sound insulating material is attached to both the inner peripheral surface and the outer peripheral surface of the temporary scaffold.
With reference to FIG. 1, the structural example of the temporary scaffold with a sound insulating material is demonstrated.
This scaffold forms a temporary scaffold 1 by assembling a plurality of frame scaffolds 11.11.
The temporary scaffold 1 is usually assembled so as to surround the entire construction site, for example, the periphery of a building to be constructed or demolished.

Therefore, although the temporary scaffold 1 is assembled and covers the whole periphery of the building, an opening for carrying in and out materials and dismantled materials is provided, so that a part where no temporary scaffold is constructed may be provided. is there.
In the temporary scaffold 1 with a sound insulating material of the present invention, a sound insulating material 2 is attached by support members 3 to both the inner surface and the outer surface of the constructed temporary scaffold.
Reference numeral 12 denotes a scaffold board. As can be seen from FIG. 1, since a large gap is formed between the long edge of the scaffolding plate 12 and the sound insulation material 2, in order to prevent leakage of noise from the upper end of the temporary scaffold with sound insulation material, It is preferable to provide a gap closing member for closing the gap.

  The sound insulation material is composed of only one of aluminum resin laminated composite material, soundproof plate material such as polycarbonate, polyester fiber / polyolefin soundproof sheet, and universal steel plate to unify the construction work of temporary scaffolding However, it is preferable to improve the efficiency, but it may be constructed by selecting a type according to the characteristics of the installation place and combining several types.

  As shown in FIG. 3, the sound insulating material 2 includes a soundproofing plate material, a soundproofing sheet, or a universal steel plate 21 and a frame member 22 that is attached so as to surround these four circumferences. The sound insulating material 2 is attached not only to the outer peripheral surface of the temporary scaffold 1 but also to the inner peripheral surface using a support member 3 such as a curing clamp.

This embodiment is characterized in that the sound insulating material 2 is double attached to the outer surface and the inner surface of the temporary scaffold 1.
This brings about a result that it is impossible to communicate with the building surrounded by the temporary scaffold 1 with the inner and outer sound insulation materials, and the function as the scaffold is almost lost.

In order to avoid this, in this embodiment, as shown in FIG. 4, the sound insulating material 2 disposed on the inner surface of the scaffold is formed with an openable / closable entrance 5 that communicates with the building.
A sliding door type door 51 is fitted in the doorway 5 so as to be freely opened and closed with the frame member 52 as an opening frame. The left door 51 is inserted and killed, the right door 51 is slidable, and a handle 53 is attached to the inner and outer surfaces.
The opening frame is hermetically sealed with packing or the like so as to be in close contact with the opening frame when the door 51 is closed.

In attaching the sound insulating material 2 to the temporary scaffold 1, the vibration of the sound insulating material attached to the inner peripheral surface of the temporary scaffold is propagated to the temporary scaffold with a vibration isolating material (not shown) interposed therebetween. In addition, it is effective to suppress the propagation of noise to the outside by reducing the propagation of the vibration of the temporary scaffold to the sound insulating material attached to the outer peripheral surface as much as possible.
As an anti-vibration material, for example, an elastic body such as an anti-vibration rubber may be sandwiched between the curing clamp and the temporary scaffolding pipe, or between the curing clamp and the sound insulation material.

In FIG. 5, the sound transmission loss according to frequency at the time of installing a sound-insulating material on both surfaces and one surface of a scaffold is shown.
As is apparent from this figure, at all frequencies in the range of about 100 to 2500 Hz, the sound transmission loss when installed on both sides of the scaffold represents a magnitude about twice that when installed on one side. Yes.
On the other hand, considering from the mass rule regarding sound insulation, even if the thickness of the face material of the sound insulation material is doubled, that is, the mass is doubled, the sound transmission loss is only increased by 6 dB.
These indicate the high sound insulation performance of the present invention, and it can be said that the technical significance of installing the sound insulation material on the inner and outer peripheral surfaces of the temporary scaffold is great.
In addition, this experiment was performed about what simply installed the sound-insulating material on both surfaces and one side, and was not performed about what comprised the above-mentioned entrance / exit and the structure of a vibration isolator.

In the above embodiment, the temporary scaffold is constructed by assembling the frame scaffold, but a single pipe may be assembled with hook bolts.
Since the temporary scaffold with a sound insulating material having this configuration does not have a member protruding inward from the temporary scaffold as shown in FIG. 1, a wide passage can be secured.

This embodiment is characterized in that a dust removing mechanism is further added to the configuration of the first embodiment described above.
Thus, it is possible to provide a temporary scaffold with a soundproof panel that not only sufficiently prevents leakage of noise generated at a construction site, but also effectively prevents dust scattering.

At least one, preferably a plurality of intake blowers (not shown) are arranged at appropriate intervals in the horizontal direction on the scaffold plate 11 provided at the upper end of the temporary scaffold 1 with sound insulating material.
And the inner peripheral side sound-insulating material 2 is formed with a large number of through holes at appropriate intervals in the vertical direction and the horizontal direction, and a filter detachable from the scaffold side is attached to the through holes.

During the construction, this air intake blower is always operated, and the dust-mixed air on the building side of the temporary scaffolding 1 with the sound insulation material is sucked to remove the dust with the filter, and then surrounded by the sound insulation material 2 inside and outside. The flat space is used as an air duct, and clean air is discharged from the blower.
The filter should be periodically cleaned at an appropriate frequency for use so as not to be clogged, and replaced when the replacement time is reached.

In this embodiment, as shown in FIG. 2, a sound absorbing material 4 is attached to the back surface of the double inner and outer sound insulating materials and the upper surface of the scaffold plate located at the upper end of the scaffold.
As the sound absorbing material 4, a material having sound absorbing properties such as glass wool and rock wool is preferable.
By attaching the sound absorbing material, the sound absorbing performance can be further improved by absorbing the sound transmitted from the inner peripheral sound insulating material to the air layer with the sound absorbing material. Further, since the sound absorbing material is attached to the upper surface of the upper end of the scaffold, it is possible to absorb the diffracted sound from the upper end and effectively reduce noise propagation to the outside.

  Naturally, this embodiment can be applied to the temporary scaffold with a sound insulating material of Example 1 or Example 2 described above.

Claims (5)

In temporary scaffolding with sound insulation, where sound insulation is attached to the temporary scaffold,
The sound insulating material is made of any one of a soundproofing plate material, a soundproofing sheet, a universal steel plate, or a combination thereof, and is temporarily attached to the outer surface and the inner surface of the temporary scaffolding. .   The temporary scaffold with a sound insulating material according to claim 1, wherein the sound insulating material attached to the inner surface of the temporary scaffold is formed with an openable / closable doorway that communicates with a building.   The said sound-insulating material is attached to the said temporary scaffold via the vibration isolator, The temporary scaffold with a sound-insulating material described in any one of Claim 1 thru | or 2 characterized by the above-mentioned.   4. A sound absorbing material made of glass wool, rock wool, or the like is attached to each back surface of the double sound insulating material and an upper surface of the scaffold plate located at the upper end of the scaffold. Temporary scaffolding with sound insulating material described in 1.   At least one intake blower is disposed at the upper end of the temporary scaffold with the sound insulating material, and the sound insulating material located on the inner surface has a ventilation opening to which a dust removing filter is attached. The temporary scaffold with a sound insulating material according to any one of claims 1 to 4, wherein the temporary scaffold is provided.