JP2017125317A - Noise reduction type pile and method of installing noise reduction material in plie - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise reduction type pile allowing for effective reduction of radiation sound caused by vibration of a pile itself upon driving of the pile and echo sound in the pile, a method of installing a noise reduction material in the pile.SOLUTION: The method of installing a noise reduction material in a pile is provided in which a noise reduction material 16 comprised of: damping material for reducing radiation sound generated caused by vibration of a cylindrical pile body 12 itself; and sound absorbing material for reducing echo sound in the pile body 12 is installed inside the cylindrical pile body 12. In the method of installing the noise reduction material in the pile, sheet-shaped material 20 comprising the noise reduction material 16 is wound around the outside of a stick-shaped air bag 18 to form an insertion body 22, the formed insertion body 22 is inserted into the inside of the pile body 12, then the air bag 18 is charged with air to inflate the air bag 18, so that the noise reduction material 16 is attached onto inner surface 12a of the pile body 12.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a noise reduction type pile that can reduce noise generated when a pile such as a steel pipe pile is placed, and a method of installing a noise reducing material on the pile.

  Conventionally, when placing steel pipe piles, it is known that three types of noise are generated: hammering sound hitting the steel pipe pile and the contact sound between the steel pipe piles, radiated sound caused by vibration of the steel pipe pile itself, and echo sound inside the steel pipe pile. ing. Among these, about the contact sound of a hammer and a steel pipe pile, soundproofing measures, such as installing the cover for soundproofing in the upper-end outer periphery of the steel pipe pile which a hammer hits, are implemented (for example, refer patent documents 1-6).

  On the other hand, as a measure against the radiated sound accompanying vibration of the steel pipe pile itself and the echo sound inside the steel pipe pile, for example, a method of arranging a cylindrical block loaded with sound absorbing means at the open end and the middle part of the steel pipe pile, (Refer to Patent Document 7), a method of mounting a soundproof device comprising a ring-shaped mass body and a viscoelastic body on the outside or inside of a pile at a predetermined interval in the longitudinal direction of the pile (see Patent Document 8) Etc. are known. However, since radiated sound and reverberant sound are generated over the entire length of the steel pipe pile, it is difficult to effectively reduce radiated sound and reverberant sound even by such a method.

JP2013-87525A JP 2010-180689 A JP 2002-54138 A Utility Model Registration No. 3028534 JP 58-106016 A Japanese Utility Model Publication No. 3-40331 JP 2012-197612 A JP-A-1-142123

  For this reason, development of the technique which can reduce effectively the radiated sound accompanying the vibration of the pile itself at the time of placement and the echo sound inside a pile was calculated | required.

  The present invention has been made in view of the above, and is directed to a noise reduction type pile and a pile that can effectively reduce the radiated sound accompanying the vibration of the pile itself at the time of placing and the echo sound inside the pile. It aims at providing the installation method of a noise reduction material.

  In order to solve the above-described problems and achieve the object, the noise reduction type pile according to the present invention is provided in close contact with the cylindrical pile body and the inner surface of the pile body, and the vibration of the pile body itself is provided. It is provided with the damping material for reducing the radiated sound which generate | occur | produces with it, and the sound-absorbing material for reducing the echo sound inside the said pile.

  Another noise-reducing pile according to the present invention is characterized in that, in the above-described invention, at least one of the damping material and the sound absorbing material is made of a biodegradable material.

  Another noise-reducing pile according to the present invention is characterized in that, in the above-described invention, the biodegradable material is cardboard.

  Further, the method of installing the noise reducing material on the pile according to the present invention includes a damping material for reducing a radiated sound generated along with vibration of the pile body itself inside the cylindrical pile body, and A method of installing a noise reducing material on a pile for installing a noise reducing material comprising a sound absorbing material for reducing an echo sound inside the pile body, wherein the noise reducing material is provided outside a rod-shaped air bag. An insert is formed by winding a sheet-like material, and after inserting the formed insert into the pile body, the air bag is inflated by inflating the air bag by introducing air into the air bag. It is made to stick to the inner surface of a pile body.

  In addition, in the above-described invention, the method of installing the noise reducing material on another pile according to the present invention is to form an insert by wrapping the sheet-like material having the noise reducing material around the outside of the rod-shaped air bag. The adhesive is applied to the outer surface of the sheet-like material, and the inserted body is inserted into the pile body, and then the air bag is inflated by introducing air into the air bag. A noise reducing material is brought into close contact with the inner surface of the pile body through the adhesive, and then the air bag is removed from the inside of the pile body.

  Moreover, the installation method of the noise reduction material to the other pile according to the present invention is characterized in that, in the above-described invention, at least one of the vibration damping material and the sound absorbing material is made of a biodegradable material.

  Moreover, the installation method of the noise reduction material to the other pile according to the present invention is characterized in that, in the above-described invention, the biodegradable material is cardboard.

  According to the noise-reducing pile according to the present invention, a cylindrical pile body is provided in close contact with the inner surface of the pile body, and the control for reducing the radiated sound generated due to the vibration of the pile body itself. Since it includes a vibration member and a sound absorbing material for reducing the echo sound inside the pile body, it is possible to effectively reduce the radiated sound accompanying the vibration of the pile itself during placement and the echo sound inside the pile body. There is an effect that can be done.

  Further, according to another noise reduction type pile according to the present invention, since at least one of the damping material and the sound absorbing material is made of a biodegradable material, the load on the surrounding environment is small and the pile body is removed. Even in this case, there is an effect that waste can be reduced.

  Further, according to another noise-reducing pile according to the present invention, the biodegradable material is corrugated cardboard, so that the noise-reducing pile can be obtained at a low cost.

  Moreover, according to the installation method of the noise reduction material to the pile which concerns on this invention, the damping material for reducing the radiated sound generated with the vibration of the said pile body itself in the inside of a cylindrical pile body, A noise reducing material is installed on a pile by installing a noise reducing material comprising a sound absorbing material for reducing an echo sound inside the pile body, and the noise reducing material is disposed outside a rod-shaped air bag. An insert is formed by wrapping a sheet-like material having a shape, and after inserting the formed insert into the pile body, the air bag is inflated by inflating the air bag to inflate the noise bag. Is closely attached to the inner surface of the pile body, so that it is possible to provide a noise reduction type pile that can effectively reduce the radiated sound accompanying the vibration of the pile itself at the time of placing and the echo sound inside the pile. Moreover, since a rod-shaped air bag is used, the effect that it can apply also to a pile with a small pile diameter and difficult work inside is produced.

  In addition, according to the method of installing the noise reducing material on the other pile according to the present invention, the sheet-like material having the noise reducing material is wound around the outside of the rod-shaped air bag to form the insert, while the sheet The noise reducing material is obtained by applying an adhesive to the outer surface of the sheet-like material, inserting the formed insert into the pile body, and then inflating the air bag by introducing air into the air bag. Is closely attached to the inner surface of the pile body through the adhesive, and then the air bag is removed from the inside of the pile body. Therefore, even after the air bag is removed, the noise reduction is made to adhere to the inner surface of the pile body. There is an effect that the shape of the material can be maintained.

  Further, according to the method of installing the noise reducing material on the other pile according to the present invention, since at least one of the vibration damping material and the sound absorbing material is made of a biodegradable material, there is little load on the surrounding environment, Even when the pile body is removed, the waste can be reduced.

  Further, according to the method for installing a noise reducing material on another pile according to the present invention, the biodegradable material is corrugated cardboard, so that corrugated board processing corresponding to the length of the pile can be easily performed on site. There is an effect that can be.

FIG. 1 is a view showing an embodiment of a noise reduction type pile according to the present invention, (1) is a schematic perspective view, (2) is a side sectional view, and (3) is a line AA in (2). FIG. FIG. 2 is a diagram comparing the effect of the noise reduction type pile according to the present invention with that of the prior art. (1) is a case of the present invention, and (2) is a diagram of a conventional case. FIG. 3: is the figure of the process 1 which shows embodiment of the installation method of the noise reduction material to the pile based on this invention, (1) is sectional side view, (2) is the BB line of (1). FIG. FIG. 4: is the figure of the process 2 which shows embodiment of the installation method of the noise reduction material to the pile based on this invention. FIG. 5: is the figure of the process 3 which shows embodiment of the installation method of the noise reduction material to the pile based on this invention. FIG. 6: is the figure of the process 4 which shows embodiment of the installation method of the noise reduction material to the pile based on this invention, (1) is a schematic perspective view, (2) is side sectional drawing, (3) is It is sectional drawing along CC line of (2).

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a noise reduction type pile and a method for installing a noise reduction material on a pile according to the present invention will be described in detail based on the drawings. Note that the present invention is not limited to the embodiments.

[Noise reduction type pile]
First, an embodiment of a noise reduction type pile according to the present invention will be described.

  As shown in FIG. 1, a noise reduction type pile 10 according to the present invention is provided in close contact with a steel pipe pile 14 made of a cylindrical pile body 12 and an inner surface 12a of the pile body 12 that does not affect the supporting force of the pile. Noise reduction material 16. The noise reducing material 16 includes a vibration damping material 16A and a sound absorbing material 16B. As will be described later, the noise reduction type pile 10 can be manufactured by the method of installing the noise reduction material on the pile of the present invention.

  The damping material 16A is for reducing the radiated sound generated with the vibration of the pile body 12 itself. As the damping material 16A, for example, resin such as metal, wood, rubber, plastic, paper, cardboard, or a hybrid material thereof can be used. The damping material 16A is not limited to these materials, and any material may be used as long as it has a damping action for absorbing vibration energy.

  The sound absorbing material 16 </ b> B is for reducing the reverberant sound inside the pile body 12. As the sound absorbing material 16B, for example, glass wool, rock wool, urethane, non-woven fabric, cardboard, or a hybrid material thereof can be used. Note that the sound absorbing material 16B is not limited to these materials, and any material may be used as long as it has a sound absorbing action for reducing the reverberant sound.

  Furthermore, if the damping material 16A and the sound absorbing material 16B are made of a material having biodegradability such as cardboard, the load on the surrounding environment is small, and waste can be reduced even when the pile body 12 is removed. it can.

  The noise reducing material 16 may be composed of a material obtained by mixing the vibration damping material 16A and the sound absorbing material 16B, or may be configured by bonding the vibration damping material 16A and the sound absorbing material 16B in a sheet shape. Good. The noise reducing material 16 is installed in close contact with the inner surface 12a of the pile body 12 via an adhesive or the like. The installation range of the noise reducing material 16 is preferably set to the entire inner peripheral surface (inner surface 12a) over the entire length of the pile body 12 without any gaps, but only a predetermined length in the longitudinal direction of the pile body 12 is installed. There may be places that are not installed. However, the noise reduction effect in the case where there is a portion that is not partially installed is slightly lower than the case where it is installed entirely.

The operation and action of the above configuration will be described.
Conventionally, as shown in FIG. 2 (2), the radiated sound accompanying the vibration of the pile body 12 itself at the time of placing is emitted to the outside and becomes noise. Moreover, the reverberant sound which propagates the inside of the pile body 12 was large, and became a noise source.

  On the other hand, according to the present embodiment, as shown in FIG. 2 (1), the damping material 16A of the noise reduction material 16 provided in close contact with the inner surface 12a of the pile body 12 is the pile body at the time of placing. By suppressing the vibration of 12 itself, the radiated sound accompanying this vibration is reduced. On the other hand, the sound absorbing material 12B of the noise reducing material 16 provided in close contact with the inner surface 12a of the pile body 12 absorbs the reflected sound of the inner surface 12a, thereby reducing the reverberant sound inside the pile body 12. Thereby, the radiation sound accompanying the vibration of the pile body 12 itself at the time of placing and the echo sound inside the pile body 12 can be effectively reduced.

  In the above-described embodiment, at least one of the vibration damping material 16A and the sound absorbing material 16B of the noise reduction material 16 may be formed of cardboard. Corrugated cardboard has a structure in which corrugated paper is sandwiched between front and back paper and bonded to give strength, and is an inexpensive material with excellent workability. By appropriately adjusting the corrugated size, shape, combination, number of layers, etc. of the corrugated cardboard, for example, corrugated cardboard processing corresponding to the length of the pile body 12 can be easily performed on site, Easy installation. Further, the noise reduction performance can be adjusted, and the noise reduction type pile 10 having the expected noise reduction performance can be obtained at a low cost.

  Moreover, in said embodiment, although the pile body 12 of the steel pipe pile 14 demonstrated the case where it was a cylindrical shape, ie, the steel pipe pile of a circular section, it is also possible to apply to the steel pipe pile of a square section, and in this case Can also achieve the same effects as described above.

[Installation method of noise reduction material on pile]
Next, an embodiment of a method for installing a noise reducing material on a pile according to the present invention will be described.

  The installation method of the noise reduction material to the pile according to the present invention corresponds to the method of manufacturing the noise reduction type pile 10 according to the present invention, and as shown in FIG. A noise reducing material 16 comprising a vibration damping material 16A for reducing the radiated sound generated along with the vibration of the pile body 12 itself and a sound absorbing material 16B for reducing an echo sound inside the pile body 12 is installed. Is the method. Since the noise reducing material 16, the vibration damping material 16 </ b> A, and the sound absorbing material 16 </ b> B are the same as those described in the embodiment of the noise reducing pile 10, detailed description thereof is omitted.

  As shown in FIG. 3, in the method of installing the noise reducing material on the pile according to the present invention, first, a sheet in which the noise reducing material 16 is stuck on the outer surface or the entire inner surface on the outside of the long rod-shaped air bag 18. The material 20 is wound coaxially to form an insert 22 composed of the air bag 18 and the sheet material 20. A tube 24 with a valve for filling air is connected to the end of the air bag 18. Note that the air bag 18 at this stage is in a deflated form, but when air is introduced from the tube 24 with a valve, the air bag 18 expands in the diameter increasing direction and deforms into a cylindrical shape. In this Embodiment, the length of the elongate direction of the air bag 18 and the sheet-like material 20 is made the same as the length of the pile body 12 for noise reduction.

  The sheet-like material 20 is set to a size that can be inserted into the inside of the pile body 12 in a state of being wound around the air bag 18 that is deflated. Further, the sheet-like material 20 is dimensioned so that it can be closely arranged in the circumferential direction of the inner surface 12a of the pile body 12 by being pushed by the inflation pressure of the air bag 18 when the air bag 18 is inflated in a subsequent process.

  Next, as shown in FIG. 4, the insertion body 22 is inserted into the inside through the opening 26 of the pile body 12. As a result, as shown in FIG. 5, the insert 22 is coaxially disposed inside the pile body 12. Both ends of the insertion body 22 are arranged so as to be substantially aligned with both ends of the pile body 12.

  Next, as shown in FIG. 6, the noise reducing material 16 attached to the sheet-like material 20 by introducing air into the air bag 18 of the insert 22 through the tube 24 with a valve and inflating the air bag 18. Is closely attached to the inner surface 12 a of the pile body 12. Finally, the air in the air bag 18 is extracted and deflated, and the deflated air bag 18 is pulled out from the insert 22 and removed (removed).

  By doing in this way, the noise reduction type pile 10 (refer FIG. 1) which reduces effectively the radiated sound accompanying the vibration of the pile body 12 itself at the time of placement and the echo sound inside the pile body 12 can be obtained. it can. Moreover, since the rod-shaped air bag 18 is used, it can be applied to a pile having a small pile diameter and difficult to work inside.

  In the above embodiment, the insert 22 is formed by wrapping the sheet-like material 20 with the noise reducing material 16 pasted on the inner surface around the outside of the rod-shaped air bag 18, while being bonded to the outer surface of the sheet-like material 20. A material may be applied. And after inserting the formed insertion body 22 in the inside of the pile body 12, air is put into the air bag 18 and the air bag 18 is expanded, and thereby the sheet-like material 20 is piled through the adhesive on the outer surface. Then, the air bag 18 may be removed from the inside of the pile body 12. Even if it does in this way, even after removing the air bag 18, the shape of the noise reduction material 16 stuck on the sheet-like material 20 adhere | attached on the inner surface 12a of the pile body 12 can be hold | maintained. Instead of doing this, the noise reducing material 16 is affixed to the outer surface of the sheet-like material 20, and the outer surface of the noise reducing material 16 is applied to the air bag 18 and wound around the insert 22. In any case, the same effects as described above can be obtained.

  In the above embodiment, the case where the insert 22 is formed by winding the sheet-like material 20 with the noise reducing material 16 pasted on the outer surface or the inner surface around the air bag 18 is described as an example. However, the present invention is not limited to this, and the noise reduction material 16 itself formed into a sheet shape may be used as the sheet material 20.

  In the above-described embodiment, at least one of the vibration damping material 16A and the sound absorbing material 16B of the noise reduction material 16 may be made of a biodegradable material such as cardboard. Corrugated cardboard has a structure in which corrugated paper is sandwiched between front and back paper and bonded to give strength, and is an inexpensive material with excellent workability. By appropriately adjusting the corrugated size, shape, combination, number of layers, etc. of the corrugated cardboard, for example, corrugated cardboard processing corresponding to the length of the pile body 12 can be easily performed on site, Easy installation. Further, the noise reduction performance can be adjusted, and the noise reduction type pile 10 having the expected noise reduction performance can be obtained at a low cost.

  Moreover, the installation method of the noise reduction material to the pile which concerns on this invention is the simple and cheap method of inflating the air bag 18 after inserting the insertion body 22 provided with the noise reduction material 16 into the inside of the pile body 12. FIG. Therefore, it is considered that the cost-effectiveness for reducing the noise is relatively high because both the radiated sound and the reverberant sound can be taken.

  As described above, according to the noise-reducing pile according to the present invention, a radiated sound that is provided in close contact with the cylindrical pile body and the inner surface of the pile body, and is generated along with the vibration of the pile body itself. The vibration damping material for reducing the sound and the sound absorbing material for reducing the echo sound inside the pile body are provided, so that the radiated sound accompanying the vibration of the pile itself at the time of placing and the echo sound inside the pile body are reduced. It can be effectively reduced.

  Further, according to another noise reduction type pile according to the present invention, since at least one of the damping material and the sound absorbing material is made of a biodegradable material, the load on the surrounding environment is small and the pile body is removed. In some cases, waste can be reduced.

  Further, according to another noise-reducing pile according to the present invention, the biodegradable material is corrugated cardboard, so that the noise-reducing pile can be obtained at a low cost.

  Moreover, according to the installation method of the noise reduction material to the pile which concerns on this invention, the damping material for reducing the radiated sound generated with the vibration of the said pile body itself in the inside of a cylindrical pile body, A noise reducing material is installed on a pile by installing a noise reducing material comprising a sound absorbing material for reducing an echo sound inside the pile body, and the noise reducing material is disposed outside a rod-shaped air bag. An insert is formed by wrapping a sheet-like material having a shape, and after inserting the formed insert into the pile body, the air bag is inflated by inflating the air bag to inflate the noise bag. Is closely attached to the inner surface of the pile body, so that it is possible to provide a noise reduction type pile that effectively reduces the radiated sound accompanying the vibration of the pile itself at the time of placing and the echo sound inside the pile. Moreover, since a rod-shaped air bag is used, it can be applied to a pile having a small pile diameter and difficult to work inside.

  In addition, according to the method of installing the noise reducing material on the other pile according to the present invention, the sheet-like material having the noise reducing material is wound around the outside of the rod-shaped air bag to form the insert, while the sheet The noise reducing material is obtained by applying an adhesive to the outer surface of the sheet-like material, inserting the formed insert into the pile body, and then inflating the air bag by introducing air into the air bag. Is closely attached to the inner surface of the pile body through the adhesive, and then the air bag is removed from the inside of the pile body. Therefore, even after the air bag is removed, the noise reduction is made to adhere to the inner surface of the pile body. The shape of the material can be maintained.

  Further, according to the method of installing the noise reducing material on the other pile according to the present invention, since at least one of the vibration damping material and the sound absorbing material is made of a biodegradable material, there is little load on the surrounding environment, Waste reduction can also be achieved when removing piles.

  Further, according to the method for installing a noise reducing material on another pile according to the present invention, the biodegradable material is corrugated cardboard, so that corrugated board processing corresponding to the length of the pile can be easily performed on site. Can do.

  As described above, the noise reduction type pile according to the present invention and the method of installing the noise reduction material on the pile are useful for reducing noise generated when a pile such as a steel pipe pile is placed, and in particular, the placement It is suitable for effectively reducing the radiated sound accompanying the vibration of the pile itself and the echo sound inside the pile.

DESCRIPTION OF SYMBOLS 10 Noise reduction type pile 12 Pile body 12a Inner surface 14 Steel pipe pile 16 Noise reduction material 16A Damping material 16B Sound absorption material 18 Air bag 20 Sheet-like material 22 Insert 24 Valve-equipped tube 26 Opening

Claims (7)

  A cylindrical pile body, a vibration damping material that is provided in intimate contact with the inner surface of the pile body, and that reduces the radiated sound that accompanies the vibration of the pile body itself, and an echo sound inside the pile body A noise reduction type pile comprising a sound absorbing material for reducing noise.   The noise-reducing pile according to claim 1, wherein at least one of the damping material and the sound absorbing material is made of a biodegradable material.   The noise-reducing pile according to claim 2, wherein the biodegradable material is cardboard. The cylindrical pile body includes a vibration damping material for reducing radiated sound generated along with the vibration of the pile body itself, and a sound absorbing material for reducing echo sound inside the pile body. A method of installing noise reducing material on a pile on which noise reducing material is installed,
A sheet-like material having the noise reducing material is wrapped around the outside of the rod-shaped air bag to form an insert,
After the formed insert is inserted into the pile body, the noise reducing material is brought into close contact with the inner surface of the pile body by inflating the air bag by introducing air into the air bag. How to install noise reduction material on piles. The sheet-shaped material having the noise reducing material is wound around the outside of the rod-shaped air bag to form an insert, while an adhesive is applied to the outer surface of the sheet-shaped material,
After the formed insert is inserted into the pile body, the noise reducing material is brought into close contact with the inner surface of the pile body through the adhesive by inflating the air bag by introducing air into the air bag. Let
Then, the said air bag is removed from the inside of the said pile body, The installation method of the noise reduction material to the pile of Claim 4 characterized by the above-mentioned.   The method for installing a noise reducing material on a pile according to claim 4 or 5, wherein at least one of the vibration damping material and the sound absorbing material is made of a biodegradable material.   The said biodegradable material is a corrugated cardboard, The installation method of the noise reduction material to a pile of Claim 6 characterized by the above-mentioned.

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