JP2006241749A - Supporting structure for sound insulation wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily inspect an anchor bolt for fixing a supporting base for H-shaped steel, even after a sound insulation wall for preventing the leakage of a sound is installed on an uneven installation surface such as an upper end surface of a wall balustrade. <P>SOLUTION: This supporting structure for the sound insulation wall, which comprises the base (11) and the sound insulation frame (21), is used for the sound insulation wall (3) composed of the H-shaped steel (1) and a sound insulation plate (2). The base is installed on the installation surface (4) of the sound insulation wall by means of a fixing implement (5), and first and second supporting parts (12) and (13) are integrally provided on the top surface of the base. The H-shaped steel (1) is integrally erected on the base by inserting a web (1a) through a clearance (14) of the first supporting part, and housing a flange (1b) between a pair of screens (13a) of the second supporting part. The sound insulation frame is installed on the installation surface in such a manner that an insertion part (25), which protrudes from an end of a main body (24), is inserted between a pair of insulation plates (12a) of the first supporting part. An end of the sound insulation plate is fitted into a groove (1c) of the H-shaped steel, and a bottom plate part (2a) thereof is brought into close contact with a top plate (22) of the sound insulation frame. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a support structure for a sound insulation wall comprising a plurality of upright H steels and a sound insulation plate fixed between the H steels.

  When installing a sound insulation wall on a bridge, if a sound insulation plate for sound absorption is placed directly on the wall height of the bridge, the sound will leak due to some unevenness (unevenness) present on the top surface of the wall height. There was a problem. Therefore, conventionally, when installing a sound insulation wall on a bridge, as shown in FIG. 5, first, a panel 51 having a flat upper surface is installed on a wall rail, and a sound insulation plate 52 is installed thereon ( Non-patent document 1).

Sound insulation wall standard design drawings December 1999 Published by Japan Highway Public Corporation

  However, when the conventional panel 51 is installed on the wall rail, the base 54 for fixing the base end of the H steel 53 is hidden under the panel 51. The base 54 is fixed on the wall rail by the anchor bolt 55. If the base 54 is hidden under the panel 51, it is troublesome to remove all the sound insulating walls when checking the looseness of the anchor bolt 55. Therefore, there is a problem that the inspection cannot be easily performed.

  Therefore, the object of the present invention is to inspect anchor bolts for fixing the H steel support base even after installing a sound insulation wall that does not leak sound on the installation surface that is not flat, such as the upper end surface of the wall rail. An object of the present invention is to provide a support structure for a sound insulation wall that can be easily performed.

  The sound insulation wall support structure according to the present invention is for a sound insulation wall made of H steel and a sound insulation plate, and has a base and a sound insulation frame. The base is installed on the installation surface of the sound insulation wall by a fixture, and is integrally provided with a first support portion and a second support portion on the upper surface. The first support portion is composed of a pair of shielding plates that are parallel to each other with a gap in parallel to the sound insulation wall in the direction away from the fixing member and spaced apart from the H steel web. The second support portion extends in a direction that forms an angle with the sound insulation wall from both outer surfaces sandwiching the relief of the pair of sound insulation plates while maintaining an interval that matches the width of the flange of the H steel. It is formed with a screen. The H steel is erected integrally on the base with the web passing through the relief and the flange between the pair of partitions. The sound insulation frame includes a main body having a top plate and opposing leg pieces, and an insertion portion protruding from an end of the main body, and the insertion portion is inserted between the pair of shielding plates of the first support portion. And installed on the installation surface. The end of the sound insulating plate is fitted into the groove of the H steel, and the bottom plate is in close contact with the top plate of the sound insulating frame.

  The shielding plate may have a protruding portion protruding outward from the base, and the lower end surface thereof may be at the same level as the lower surface of the base.

  The width of the sound insulation frame may be adapted to the width of the sound insulation plate 2.

  The insertion portion of the sound insulation frame may be separate from the main body, and the end wall portion may be attached to the main body via a mounting plate and integrated with the main body.

  The leg pieces of the sound insulation frame may have a full length that does not interfere with the base in a state where the insertion portion is fitted between the pair of shielding plates and installed on the installation surface.

  The insertion portion may include a close-up portion that matches the thickness of the base on the lower surface of the outer end portion.

  The insertion portion includes a top plate portion and a pair of leg pieces, the width of which corresponds to the interval between the pair of shielding plates, and one end portion enters the main body, the leg pieces and the main body. The leg pieces may be closed by the end wall portion.

  The top plate and the top plate portion may be inclined surfaces that match the inclined surface of the bottom plate portion of the sound insulating plate.

  The leg piece on the inclined upper end side of the top plate of the sound insulation frame may be provided with a groove that accommodates a sound insulation droop along the sound absorption side lower edge of the sound insulation plate along the upper edge.

  The leg pieces of the sound insulation frame may be provided with packing along the lower edge.

  The packing may be provided on an inner collar formed on the lower edge of the leg piece.

  In the sound insulation wall support structure according to the present invention, the base is integrally provided with a first support portion and a second support portion on the upper surface, and the first support portion is spaced apart from the fixing device in the direction of the sound insulation wall. A pair of shield plates parallel to each other and having a relief of the H steel web, the second support portion being spaced apart to fit the width of the flange of the H steel and the relief of the pair of shield plates The H steel is formed by a pair of partitions extending from both outer surfaces sandwiching the sound insulation wall in a direction that forms an angle with the sound insulation wall. Since the base plate is installed on the installation surface, the H steel is stably installed on the installation surface, and the sound insulation frame includes the top plate and the opposing leg pieces. And the insertion portion protruding from the end of the main body, the insertion portion is the pair of shielding plates. If the leg piece is installed on the installation surface, the leg piece exposes the fixture at the end, and the insertion portion is in close contact with the pair of shielding plates, and the lower end edge is in close contact with the installation surface. The sound insulation frame can not only prevent the original sound leakage but also expose the fixture. The sound insulation plate is fitted with the end of the H steel groove and the bottom plate portion of the sound insulation frame. Since it is in close contact with the top plate, it is possible to prevent sound leakage from both.

  According to claim 2, the shielding plate has a protruding portion protruding outward from the base, and the lower end surface thereof is at the same level as the bottom surface of the base. Even if the main body end face of the frame is not in close contact, sound leakage from the gap can be prevented.

  According to claim 3, since the width of the sound insulation frame conforms to the width of the sound insulation plate, even when the sound insulation frame and the sound insulation plate are integrated in advance in a factory or the like, the handling property at the time of transportation and installation work is improved. By not doing this, the installation of the sound insulation frame and the installation of the sound insulation plate can be performed at one time, thereby shortening the construction period.

  According to claim 4, the insertion portion of the sound insulation frame is separate from the main body, and the end wall portion is attached to the main body via a mounting plate and is integrated with the main body. Is easily formed, and sound leakage is prevented by the end wall portion.

  According to claim 5, the leg piece of the sound insulation frame has a total length that does not interfere with the base in a state where the insertion portion is fitted between the pair of shielding plates and installed on the installation surface. As a result, the fixture is reliably exposed.

  According to the sixth aspect, since the insertion portion is provided with a close-up portion adapted to the thickness of the base on the lower surface of the outer end portion, the insertion portion is not supported even if the insertion portion is fitted between the pair of shielding plates. There is no risk of creating a gap between the lower edge of the leg piece and the installation surface.

  According to claim 7, the insertion portion includes a top plate portion and a pair of leg pieces, the width of which corresponds to the interval between the pair of shielding plates, and one end portion enters the main body, Between the leg pieces and the leg pieces of the main body are closed by the end wall portion, the outer surface of the pair of leg pieces is in close contact with the inner surfaces of the pair of shielding plates, and the sound insulation effect is improved. A gap between the insertion portion and the main body is also shielded, and a sound insulation effect is achieved.

  According to claim 8, the top plate and the top plate portion are inclined surfaces that match the inclined surface of the bottom plate portion of the sound insulation plate, so that the sound insulation plate and the sound insulation frame can be brought into close contact with each other, The sound insulation effect is improved.

  According to claim 9, the leg piece on the inclined upper end side of the top plate of the sound insulation frame is provided with a concave line that accommodates a sound insulation droop along the sound absorption side lower edge of the sound insulation plate along the upper edge. Therefore, the sound insulation effect is further improved.

  According to the tenth aspect, since the leg pieces of the sound insulation frame are provided with packing along the lower edge, the clearance between the sound insulation frame and the installation surface is eliminated, and the sound insulation effect can be enhanced.

  According to the eleventh aspect, since the packing is provided on the inner flange formed at the lower edge of the leg piece, the packing is easily and reliably arranged.

  1-4, the specific example of the support structure of the sound insulation wall concerning this invention is shown. FIG. 1 is a perspective view showing an overview of the support structure, and FIG. 2 is a front view thereof. FIG. 3 is a perspective view showing only the insertion part, a part of the main part, and a part of the first support part, and FIG. 4 is a perspective view showing a part integrated with the base.

The support structure shown in the figure is for a sound insulation wall 3 made of H steel 1 and a sound insulation plate 2 and has a base 11 and a sound insulation frame 21.
The base 11 is installed on the installation surface 4 of the sound insulation wall 3 by the fixture 5, and is integrally provided with a first support portion 12 and a second support portion 13 on the upper surface. For this integration, an appropriate method such as welding or brazing is adopted. The first support portion 12 is composed of a pair of shielding plates 12a that are parallel to each other with a predetermined interval w inside the fixing member 5 in the direction of the sound insulation wall 3 and that have a relief 14 of the web 1a of the H steel 1. The The second support portion 13 extends in a direction that forms an angle with the sound insulation wall 3 from both outer surfaces sandwiching the relief 14 of the pair of shielding plates 12a while maintaining an interval suitable for the width s of the flange 1b of the H steel 1. It is formed by a pair of partitions 13a.

The H steel 1 is erected integrally on the base plate 11 with the web 1a passing through the relief 14 and the flange 1b between the pair of partitions 13a. Also in this case, an appropriate method such as welding or brazing is adopted for integration.
The sound insulation frame 21 includes a main body 24 having a top plate 22 and opposing leg pieces 23, and an insertion portion 25 protruding from an end portion of the main body 24. The sound insulation frame 21 is installed on the installation surface 4 by inserting the insertion portion 25 between the pair of shielding plates 12 a of the first support portion 12.

The sound insulating plate 2 has its end fitted into the groove 1c of the H steel 1 and its bottom plate 2a is in close contact with the top plate 22 of the sound insulating frame 21. Although not shown, a spring for suppressing rattling is interposed between the back surface of the sound insulating plate 2 and the inner surface of the flange 1b at the rear portion of the H steel.
In FIG. 1, the H steel 1, the sound insulation plate 2, and the sound insulation frame 21 are partially displayed, but for convenience of illustration, the fractured portion is indicated by a straight line. The same applies to the H steel in FIG.

  In this support structure, the H steel 1, the first support portion 12, and the second support portion 13 are integrated with the base 11, so that the H steel 1 can be supported more firmly. Further, even if the installation surface 4 of the sound insulation wall 3 is uneven, the sound insulation frame 21 is interposed there, so that the flat upper surface of the top plate portion 22 of the sound insulation frame 21 can be used as the installation surface of the sound insulation plate 2. This improves sound insulation. Furthermore, in the sound insulation frame 21, the portion inserted between the pair of shielding plates 12a on the base 11 is the insertion portion 25 protruding from the main body 24, so that the insertion work is facilitated and the leg piece 23 is The fixing tool 5 is not covered up. Therefore, the state of the fixture 5 can be inspected from the outside without removing the sound insulating plate 2 and the sound insulating frame 21 from the H steel.

The shielding plate 13 a has a protruding portion 13 b that protrudes outward from the base 11, and its lower end surface is at the same level as the lower surface of the base 11.
In this way, even if the side surface of the base 11 and the end surface of the main body 24 of the sound insulation frame 21 are not in close contact, sound leakage from the gap can be prevented.

The width of the sound insulation frame 21 is adapted to the width of the sound insulation plate 2.
If it carries out like this, even when the panel main part 25 and the sound-insulating board 2 are united, the handleability at the time of transport and attachment work is not reduced. Therefore, by integrating the panel main part 25 and the sound insulation board 2 in advance in a factory or the like, the panel main part 25 and the sound insulation board 2 can be installed at a time, and the construction period can be shortened.

The insertion portion 25 of the sound insulation frame 21 is separate from the main body 24, and its end wall portion 26 is attached to the main body 24 via an attachment plate 27 and is integrated with the main body 24.
If it carries out like this, formation of the insertion part 25 is easy and sound leakage is prevented by the end wall part 26. FIG.

The leg piece 23 of the sound insulation frame 21 has a full length that does not interfere with the base 11 in a state where the insertion portion 25 is fitted between the pair of shielding plates 12 a and installed on the installation surface 4.
This ensures that the fixture 5 is exposed.

The insertion portion 25 includes a close-up portion 28 that matches the thickness t of the base 11 on the lower surface of the outer end portion.
If it carries out like this, even if the insertion part 25 is fitted between a pair of shielding board 12a, there is no possibility that a clearance gap may be produced between the lower end edge of the leg piece 23 and the installation surface 4. FIG.

The insertion portion 25 includes a top plate portion 25a and a pair of leg pieces 25b, the width of which fits the interval w between the pair of shielding plates 12a, and one end portion is inserted into the main body 22, and the leg piece portion 25b. And the leg piece 23 of the main body 24 are closed by an end wall portion 26.
In this way, the outer surfaces of the pair of leg pieces 25b are in close contact with the inner surfaces of the pair of shielding plates 12a, so that the sound insulation effect is improved, and the gap between the insertion portion 25 and the main body 24 is also shielded, thereby achieving the sound insulation effect.

The top plate 22 and the top plate portion 25 a are inclined surfaces that match the inclined surface of the bottom plate portion 2 a of the sound insulating plate 2.
If it carries out like this, the sound insulation board 2 and the sound insulation frame 21 can be closely_contact | adhered, and the sound insulation effect will improve.

The leg piece 23 on the inclined upper end side of the top plate 22 of the sound insulation frame 21 is provided with a recess 29 that accommodates the sound insulation droop 2b along the sound absorption side lower edge of the sound insulation plate 2 along the upper edge.
This further improves the sound insulation effect.

The leg piece 23 of the sound insulation frame 21 is provided with a packing 30 along the lower edge.
This eliminates the gap between the sound insulation frame 21 and the installation surface 4 and enhances the sound insulation effect.

The packing 30 is provided on an inner collar 31 formed on the lower edge of the leg piece 23.
If it carries out like this, deployment of packing 30 will be easy and reliable.

It is a perspective view showing the outline of the example of the support structure of the sound insulation wall concerning the present invention. It is the same front view. It is a perspective view which extracts and shows only a part of insertion part, a part of main part, and a 1st support part. It is a perspective view which shows the part integrated with a base | substrate. It is a perspective view which shows the conventional support structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 H steel 1a Web 1b Flange 2 Sound insulation board 2a Bottom board part 2b Sound insulation dripping 3 Sound insulation wall 4 Installation surface 5 Fixing tool 11 Base 12 First support part 12a Shielding board 12b Protrusion part
13 2nd support part 13a Screen w Space | interval s Width 14 Escape 21 Sound insulation frame 22 Top plate 23 Leg piece 24 Main body 25 Insertion part 25a Top plate part 25b Leg piece part t Thickness 26 End wall part 27 Mounting plate 28 Close-up part 29 Concave Article 30 packing 31 inner casing

Claims (11)

For sound insulation wall (3) with H steel (1) and sound insulation board (2), with base (11) and sound insulation frame (21),
The base (11) is installed on the installation surface (4) of the sound insulation wall (3) by a fixture (5), and is integrally provided with a first support part (12) and a second support part (13) on the upper surface. ,
The first support part (12) is parallel to the web (1a) of the H steel (1) in parallel to the sound insulation wall (3) while maintaining a gap (w) inside the fixing member (5). Consists of a pair of shielding plates (12a) having a relief (14),
The second support portion (13) sandwiches the relief (14) of the pair of shielding plates (12a) at a distance that matches the width (s) of the flange (1b) of the H steel (1). Formed from a pair of partitions (13a) extending from the outer surfaces on both sides in a direction that forms an angle with the sound insulation wall (3),
The H steel (1) is erected integrally on the base (11) by passing the web (1a) through the relief (14) and placing the flange (1b) between the pair of partitions (13a). And
The sound insulation frame (21) includes a main body (24) having a top plate (22) and opposing leg pieces (23), and an insertion portion (25) protruding from an end of the main body (24), Inserting the insertion part (25) between the pair of shielding plates (12a) of the first support part (12), installed on the installation surface (4),
The sound insulating plate (2) has its end fitted into the groove (1c) of the H steel (1) and its bottom plate (2a) is in close contact with the top plate (22) of the sound insulating frame (21). A sound insulation wall support structure characterized by that.   The said shielding board (12a) has the protrusion part (12b) protruded to the outward of this base | substrate (11), The lower end surface is the same level as the lower surface of this base | substrate (11). The support structure of the sound insulation wall as described in 2.   The support structure for a sound insulation wall according to claim 1 or 2, wherein the width of the sound insulation frame (21) is adapted to the width of the sound insulation plate (2).   The insertion portion (25) of the sound insulation frame (21) is separate from the main body (24), and the end wall portion (26) is attached to the main body (24) via a mounting plate (27). The structure for supporting a sound insulation wall according to claim 1, 2 or 3, which is integrated with (24).   The leg piece (23) of the sound insulation frame (21) is in a state where the insertion portion (25) is fitted between the pair of shielding plates (12a) and installed on the installation surface (4), The sound insulation wall support structure according to claim 1, 2, 3, or 4, wherein the sound insulation wall has a full length that does not interfere with the base (11).   The sound insulation wall according to claim 1, 2, 3, 4, or 5, wherein the insertion portion (25) has a close-up portion (28) adapted to the thickness (t) of the base (11) on the lower surface of the outer end portion. Support structure.   The insertion portion (25) includes a top plate portion (25a) and a pair of leg pieces (25b), the width of which corresponds to the interval (w) between the pair of shielding plates (12a), and one end portion is 7. The body (22) enters the body, and the leg piece (25b) and the leg piece (23) of the body (24) are closed by the end wall (26). The structure for supporting a sound insulation wall according to one of the items.   The sound insulating wall support according to claim 7, wherein the top plate (22) and the top plate portion (25a) are inclined surfaces adapted to the inclined surface of the bottom plate portion (2a) of the sound insulating plate (2). Construction.   The leg piece (23) on the inclined upper end side of the top plate (22) of the sound insulation frame (21) is along the upper edge, and the sound insulation droop (2b) along the sound absorption side lower edge of the sound insulation plate (2). The support structure for the sound insulation wall according to claim 1, further comprising a recess (29) for accommodating the sound insulation wall.   The sound insulation wall support structure according to claim 1 or 9, wherein the leg piece (23) of the sound insulation frame (21) is provided with a packing (30) along a lower edge. The sound insulating wall support structure according to claim 10, wherein the packing (30) is provided on an inner flange (31) formed on a lower edge of the leg piece (23).

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