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JP-2026074754-A - Soundproofing structure and installation method of suspended soundproofing device

JP2026074754AJP 2026074754 AJP2026074754 AJP 2026074754AJP-2026074754-A

Abstract

[Problem] To provide a soundproof structure and installation method that reduce the number of outdoor and high-altitude work steps, prevent the progress of installation work from being affected by weather conditions, and offer superior safety during installation. [Solution] A soundproofing structure to be installed in the opening of the deck slab of an elevated structure, comprising a suspended soundproofing device having a plurality of support columns and a plurality of sound-absorbing panels, wherein the support columns are fixed to female screw members embedded in the side surface of the deck slab opening, and the plurality of sound-absorbing panels constitute an internal space that penetrates in the vertical direction. [Selection Diagram] Figure 2

Inventors

  • 岡本 直

Assignees

  • ＪＦＥ建材株式会社

Dates

Publication Date
20260507
Application Date
20241021

Claims (7)

  1. A soundproofing structure installed in the opening of the deck slab of an elevated structure, It is equipped with a suspended soundproofing device having multiple support columns and multiple sound-absorbing panels, The support column is fixed to a female screw member embedded in the side surface of the floor slab opening. A soundproofing structure characterized in that multiple sound-absorbing panels constitute an internal space that penetrates in the vertical direction.
  2. In the soundproofing structure described in claim 1, The sound-absorbing panel has a surface plate on the side facing the internal space, The aforementioned surface plate is a thin plate with multiple holes and is characterized by its ability to hold sound-absorbing material.
  3. In the soundproofing structure described in claim 1, A U-shaped crossbeam is attached to the upper end of the sound-absorbing panel. The aforementioned crossbeam connects the support column and the sound-absorbing panel, A soundproofing structure characterized in that drainage holes are formed at the connection point between the crossbeam and the support column.
  4. In the soundproofing structure described in claim 3, The soundproofing structure is characterized in that the crossbeam is provided with a sealing member that closes the gap between the crossbeam and the side surface of the floor slab opening.
  5. A method for installing a suspended soundproofing device to be installed in the opening of the deck slab of an elevated structure, A process for manufacturing an opening, which involves arranging a female threaded member for attaching the suspended soundproofing device on the side surface of the floor slab opening, The process of assembling the aforementioned suspended soundproofing device, A method for installing a suspended soundproofing device, characterized by comprising a soundproofing device installation step of attaching the completed suspended soundproofing device to the floor slab opening.
  6. In the method for installing a suspended soundproofing device as described in claim 5, A method for installing a suspended soundproofing device, characterized in that the suspended soundproofing device is assembled in a workshop located at a different location from the installation site of the elevated structure.
  7. In the method for installing a suspended soundproofing device as described in claim 5, The aforementioned suspended soundproofing device comprises multiple support columns and multiple sound-absorbing panels. A method for installing a suspended soundproofing device, characterized in that the support columns are temporarily fixed to a jig placed on the ground, and the method includes a column arrangement step of determining the distance between adjacent support columns.

Description

This invention relates to a soundproofing structure for installation in elevated structures, comprising a suspended soundproofing device for reducing noise radiated from openings provided for purposes such as snow removal, and a method for installing the same. Conventionally, in snowy regions, measures have been taken to prevent snow damage on elevated railway bridges, for example, and open-deck elevated bridges with openings to prevent snow accumulation on the deck are known. Furthermore, various structures are known for suspended soundproofing devices to reduce noise radiated downwards from such openings. For example, Patent Document 1 describes the structure of a suspended noise reduction device that includes a noise passage section of a predetermined length through which noise passes from an opening in the bridge deck toward the space below. Patent No. 6975104 A cross-sectional view showing an example of the installation state of the suspended soundproofing device of this embodiment.A flowchart showing an example of the installation process for the suspended soundproofing device of this embodiment.A perspective view showing an example of the opening of this embodiment.Figure 3 shows a cross-sectional view along the line X-X.A support column of this embodiment, where (a) is a perspective view showing a corner support column, and (b) is a perspective view showing an intermediate support column.A plan view showing the support column of this embodiment.A support column with a cover plate attached according to this embodiment, where (a) is a perspective view showing a corner support column and (b) is a perspective view showing an intermediate support column.This is a perspective view showing the support columns of this embodiment temporarily fixed to a grid-shaped jig.A perspective view showing the sound-absorbing panel of this embodiment.Figure 9 shows a cross-sectional view along the Y-Y line.A cross-sectional view showing a sealing member that closes the gap between the crossbeam and the opening in this embodiment.A perspective view showing an example of the process of attaching the sound-absorbing panel of this embodiment to the support column.A perspective view showing an example of the process of installing the completed hanging soundproofing device of this embodiment into an opening.A perspective view showing an example of the process of attaching the support column of this embodiment to the opening.A cross-sectional view showing the mounting state of the support column in this embodiment to the opening.A cross-sectional view showing an example of a support column in this embodiment.A flowchart illustrating an example of the installation process for a conventional suspended soundproofing device.A perspective view showing an example of a conventional opening.Figure 18 shows a Z-Z cross-sectional view.A perspective view showing an example of the process of attaching a conventional support column to an opening.A perspective view showing an example of the process of attaching a conventional crossbeam to a support column.A perspective view showing an example of the process of attaching conventional sound-absorbing panels to support columns.A perspective view showing an example of the process of attaching a conventional cover plate to a support column. The following describes preferred embodiments for carrying out the present invention with reference to the drawings. Note that the following embodiments are not intended to limit the invention as defined in each claim, and not all combinations of features described in the embodiments are necessarily essential for solving the problem of the invention. Figure 1 is a cross-sectional view showing an example of the installation state of the suspended soundproofing device according to this embodiment. The elevated bridge 1 shown in Figure 1 is an elevated bridge equipped with a suspended soundproofing device 9 according to this embodiment, and is, for example, an elevated bridge on which railway tracks are laid. The elevated bridge 1 is made of reinforced concrete and has a deck slab 3a on top of a plurality of bridge piers 2. A track slab 3b, for example, made of a rectangular concrete slab, is placed on the upper surface of the deck slab 3a, and a pair of left and right rails 3c are laid on the upper surface of the track slab 3b, extending in the depth direction of the paper in Figure 1. Note that the elevated bridge 1 shown in Figure 1 represents a double-track railway. Openings 4 are formed on both the left and right sides of the deck slab 3a, and between the track slabs 3b of the double track, penetrating the deck slab 3a vertically. These openings 4 are through-holes designed to prevent snow accumulation on the deck slab 3a and to allow surrounding snow to be discharged downwards. The openings 4 are roughly rectangular in shape, with the extension direction of the rails 3c as the longitudinal side, and multiple openings are formed at intervals along the exten