JP6978782B2 - Translucent sound insulation panel - Google Patents

Description

The present invention relates to a translucent sound insulating panel.

Conventionally, in order to prevent vehicle noise on expressways and general roads from being diffused to surrounding private land, a sound insulation wall is provided as a side wall of the road.

A wall balustrade is erected on the side of the road (side edge of the road). Furthermore, a sound insulation wall is erected on the wall balustrade. For example, on the wall balustrade, a plurality of H-shaped columns are erected at intervals along the longitudinal direction thereof. Further, a plurality of sound insulation panels are laminated (vertically stacked) using the flanges of adjacent H-shaped columns as guides.

As a sound insulating panel, as in Patent Documents 1 and 2, a sound absorbing type sound insulating panel in which a sound absorbing material is housed in a metallic casing is known. As another sound insulation panel, a translucent sound insulation panel in which a translucent plate made of polycarbonate or the like is supported by a metal frame is known.

Japanese Unexamined Patent Publication No. 2016-94706 Japanese Unexamined Patent Publication No. 9-268525

By the way, when a vehicle fire or the like occurs in the vicinity of the translucent sound insulation panel, the heat may cause the translucent plate to soften and liquefy, and the softened portion and droplets may drip (melt down). If these softened parts and droplets melt down into the private land outside the road, there is a risk of damaging the structures of the private land.

The present invention relates to a translucent sound insulating panel. The panel includes a light-transmitting plate and a frame member that supports the edge of the light-transmitting plate, and is erected as a part of a sound insulation wall installed on the side of the road. It is possible to see the scenery on the private land side outside the road. The frame member includes a road surface that faces the road side and faces a vertical surface when erected as a part of a sound insulation wall. The translucent plate is supported by the frame member in a forward tilted state in which the upper side projects toward the road side rather than the lower side relative to the road surface of the frame member when erected.

According to the above configuration, the translucent plate is supported by the frame member so as to be tilted forward toward the road side, so that the softened portion and the droplets of the translucent plate are easily melted down to the road side in the event of a fire. Will be.

Further, in the above invention, the frame member may include a lower frame member that supports the lower edge of the light transmitting plate when it is erected as a part of the sound insulation wall. In this case, the upper surface of the lower frame member is formed in a downward slope from the private ground facing the road surface toward the road surface.

According to the above configuration, the droplets melted down on the upper surface of the lower frame member are discharged to the road side along the downward slope of the upper surface.

Further, in the above invention, the frame member may include an upper frame member that supports the upper edge of the light transmitting plate when it is erected as a part of the sound insulation wall. In this case, the lower frame member is projected toward the private ground side as compared with the upper frame member.

According to the above configuration, by adjusting the overhang of the lower frame member toward the private land side, the forward tilt angle of the translucent plate can be adjusted while the road surfaces of the upper frame member and the lower frame member are aligned. ..

Further, in the above invention, the lower frame member may be provided with a liquid retaining wall extending upward from the private ground.

According to the above configuration, even if the softened portion or the droplet is melted down from the translucent plate to the private land side from the translucent plate, the softened portion or the droplet is received by the liquid reservoir wall. The outflow to the private land side is suppressed.

According to the present invention, when a vehicle fire or the like occurs, it is possible to suppress the softened portion or droplets melted from the translucent plate from reaching the private land.

It is a perspective view which illustrates the sound insulation wall which concerns on this embodiment. It is a perspective view which illustrates the translucent sound insulation panel which concerns on this embodiment. FIG. 2 is an end view of the AA cut portion of FIG. FIG. 2 is an end view of the BB cut portion of FIG. It is sectional drawing which illustrates the positional relationship between a lower frame member and a wall balustrade. It is a figure which shows the example which provided the liquid holding wall in the lower frame member. It is a figure which illustrates the state at the time of carrying out the flame resistance test method (burner method) of a sound insulation wall. FIG. 3 is an end view of an AA cut portion showing another example of the translucent sound insulation panel according to the present embodiment.

FIG. 1 illustrates the sound insulation wall 200. In FIGS. 1 to 7, the height direction axis (vertical direction axis) of the sound insulation wall is the Z axis, the longitudinal direction axis of the sound insulation wall (road extension direction axis) is the Y axis, and the thickness direction axis of the sound insulation wall 200. Let (the width direction axis of the road) be the X axis. The X-axis, Y-axis, and Z-axis are orthogonal to each other.

The sound insulation wall 200 is installed on the side (both sides) of the road 130 to block the propagation of road noise to the private land outside the road. For example, the sound insulation wall 200 is provided on the side of a general road or a highway along the extension (extension) direction (Y-axis direction) of the road. Further, the sound insulation wall 200 is erected on the wall balustrade 120 erected on the side of the road 130.

In the following, regarding the sound insulation wall 200, the sound insulation panel 10, and other configurations, the side relatively close to the road will be described as the road side, and the opposite side will be appropriately described as the private land side.

The sound insulation wall 200 includes a sound insulation panel 10, a standard sound insulation panel 100, and an H-shaped column 110. The H-shaped column 110 is so-called H-steel, and includes a pair of flanges 110A and 110A and a web 110B connecting them.

The web 110B is extended perpendicularly (in the X-axis direction) to the extending direction (Y-axis direction) of the sound insulation wall 200. The flanges 110A and 110A face each other with the web 110B interposed therebetween, and extend along the extension direction of the sound insulation wall 200 (in the Y-axis direction).

A plurality of H-shaped columns 110 are erected at intervals along the extending direction of the sound insulation wall 200. The standing interval is determined according to the width (length in the Y-axis direction) of the sound insulation panel 10 and the standard sound insulation panel 100.

The sound insulation panel 10 and the standard sound insulation panel 100 are erected (vertically stacked) using the flange 110A of the H-shaped column 110 as a guide. For example, the sound insulation panel 10 is installed as the bottom panel. Further, a standard sound insulation panel 100 is erected (vertically stacked) on the upper stage.

In FIG. 1, the sound insulation panel 10 according to the present embodiment is erected only in the lowermost stage, but the present invention is not limited to this form. For example, the sound insulation panel 10 may be laminated over all the steps of the sound insulation wall 200.

The standard sound insulation panel 100 may be, for example, a translucent plate specified in the sound insulation wall standard design drawing collection issued by NEXCO. In the standard sound insulation panel 100, unlike the sound insulation panel 10 according to the present embodiment, a translucent plate is vertically supported by the frame body.

FIG. 2 illustrates the translucent sound insulation panel 10 according to the present embodiment. The sound insulation panel 10 is erected as a part of the sound insulation wall 200 (see FIG. 1). The sound insulation panel 10 includes a light transmitting plate 20 and a frame member 30. The translucent plate 20 is, for example, a rectangular plate material, and is made of a translucent material such as polycarbonate, acrylic, bioengineering plastic, and glass. The thickness of the light transmitting plate 20 may be, for example, 5 mm. This conforms to the thickness of polycarbonate specified in the "Guidelines for Designing and Construction of Affiliated Facilities" of the Metropolitan Expressway Co., Ltd.

In the translucent plate 20, other members are not arranged (interfered) on the road side and the private land side facing the road side except for the edge portion supported by the frame member 30. In other words, the translucent plate 20 functions as a window of the sound insulation wall 200. The occupants of the vehicle traveling on the road 130 can see the scenery on the private land side outside the road from the road side through the translucent plate 20.

Along with a vehicle fire on the road 130, a part of the translucent plate 20 made of the above material is softened and liquefied and melted down from the sound insulating panel 10. In order to prevent the softened portion and droplets that melt down from reaching the private land, the translucent plate 20 is relatively upward (Z-axis positive direction side) from the lower side (Z-axis negative direction side) in the upright state. Is also supported by the frame member 30 in a forward leaning state overhanging to the road side.

In the following, the standing state of the sound insulation panel 10 refers to the state when the sound insulation panel 10 is installed as a part of the sound insulation wall 200, and more specifically, it faces the road 130 side of the frame member 30. It refers to a state in which the road surfaces 40A, 50A, 60A, and 70A are arranged vertically. In such an upright state of the sound insulating panel 10, the translucent plate 20 is supported by the frame member 30 in a state of being tilted forward toward the road side with respect to the road surfaces 40A, 50A, 60A, 70A of the frame member 30. ..

Specifically, the translucent plate 20 is tilted forward and supported at an inclination angle θ1 shown in FIG. 4 with respect to the horizontal plane. The inclination angle θ1 is the rising angle of the translucent plate 20 from the horizontal plane, and the range of 0 ° <θ1 <90 ° is the angle range in which the translucent plate 20 is in a forward leaning posture with respect to the road. The inclination angle θ1 of the light transmitting plate 20 may be, for example, 85 ° or more and less than 90 °. Alternatively, the inclination angle θ1 may be, for example, 87 °.

In this way, by installing the translucent plate 20 on the road side in a forward tilted state (forward leaning state), the softened portions and droplets melted down from the translucent plate 20 are exclusively melted down on the road side. Therefore, the melting into the private land is suppressed.

With reference to FIG. 2, the frame member 30 supports the edge of the translucent plate 20. The frame member 30 supports the light transmitting plate 20 toward the road side in a forward tilted state when the sound insulating panel 10 is in an upright state. The frame member 30 includes an upper frame member 40, a lower frame member 50, and vertical frame members 60 and 70. The edges (four sides) of the translucent plate 20 are supported by the upper frame member 40, the lower frame member 50, and the vertical frame members 60, 70.

FIG. 3 illustrates an end view of the AA cut portion of FIG. As shown, the translucent plate 20 is supported on both sides (both ends in the Y-axis direction) by the vertical frame members 60 and 70.

Although the structure of the vertical frame member 60 will be described below, the vertical frame member 70 has the same structure because of the symmetry of the structure. Specifically, if the tens digit of the code relating to the vertical frame member 60 is changed from 6 to 7, the structure of the vertical frame member 70 will be explained.

The vertical frame member 60 includes a vertical frame wall 62, a flange 64, a vertical ridge 66, and a vertical receiving edge 68. The vertical frame wall 62 is a main body portion of the vertical frame member 60, and extends in the height direction (Z-axis direction) from the upper end to the lower end of the side end of the translucent plate 20.

The flange 64 is connected to the front end (road side end portion) of the vertical frame member 60 and projects in the width direction (Y-axis direction) of the sound insulation panel 10.

As will be described later, in the sound insulation panel 10 according to the present embodiment, the thickness L2 (length in the X-axis direction) of the lower frame member 50 (see FIG. 4) is set in order to bring the light transmitting plate 20 into the forward tilted state. It is formed so as to exceed the pitch P1 between the flanges 110A and 110A of the H-shaped column 110 (see FIG. 1) (L2> P1). According to the above structure, the frame member 30 cannot be dropped between the flanges 110A and 110A.

Therefore, in the sound insulation panel 10 according to the present embodiment, the sound insulation panel 10 is supported by the H-shaped column 110 by fixing the flanges 64 and 74 of the vertical frame members 60 and 70 to the flange 110A of the H-shaped column 110.

Specifically, the flanges 64 and 74 of the vertical frame members 60 and 70 are overlapped so as to be located on the road side of the flange 110A of the H-shaped column 110. In this state, the flange 110A of the H-shaped column 110 and the flanges 64, 74 of the vertical frame members 60, 70 are fixed by bolt / nut fastening or the like.

A convex portion 65 that further laterally projects from the vertical frame members 60 and 70, for example, as illustrated in FIG. 8, so that the sound insulation panel 10 can be dropped between the flanges 110A and 110A of the H-shaped column 110. , 75 may be provided. The width in the thickness direction (length in the X-axis direction) of the protrusions 65 and 75 shall be less than the distance P1 between the flanges 110A and 110A of the H-shaped column 110. The sound insulation panel 10 is fixed to the H-shaped column 110 by inserting the wedge-shaped fixing member 140 between the private ground of the convex portion 65 and the flange 110A of the H-shaped column.

Hereinafter, as described above, the description of the vertical frame member 70 will be omitted as appropriate for the sake of symmetry. The road side exposed surface of the flange 64 is the road surface 60A. Since the flange 64 is fixed to the H-shaped column 110, the road surface 60A of the flange 64 is arranged vertically.

Here, the term "vertical" is given in addition to the geometric vertical (90 °), in a substantially vertical state, for example, when the H-shaped column 110 is erected or the road surface 40A, 50A, 60A, 70A of the frame member 30 is processed. The tolerance range to be (eg ± 1 °) is included.

The vertical ridge 66 and the vertical receiving edge 68 hold the side end of the translucent plate 20. Both the vertical ridge 66 and the vertical receiving edge 68 are fixed to the vertical frame wall 62 by fastening bolts and nuts. In narrowing the light-transmitting plate 20, for example, the vertical receiving edge 68 is first fixed to the vertical frame wall 62. Next, the side end of the translucent plate 20 is aligned on the road side surface of the vertical receiving edge 68. After that, the vertical ridge 66 is fixed to the vertical frame wall 62. As a result, the translucent plate 20 is sandwiched between the vertical push edge 66 and the vertical receiving edge 68.

The vertical ridge 66 and the vertical receiving edge 68 are extended so as to be inclined with respect to the horizontal plane. Specifically, the vertical ridge 66 and the vertical receiving edge 68 are extended in the height direction at the inclination angle θ1 shown in FIG.

FIG. 4 illustrates an end view of the BB cut portion of FIG. The upper frame member 40 supports the upper edge of the light transmitting plate 20 when the sound insulating panel 10 is erected as a part of the sound insulating wall 200. The upper frame member 40 includes an upper frame main body 42, an upper receiving edge portion 44, and an upper pushing edge 46.

As described above, in the sound insulation panel 10 according to the present embodiment, the lower frame member 50 does not fit between the flanges 110A and 110A of the H-shaped column 110 (see FIG. 1). In order to enable installation (erection) between the H-shaped columns 110 and 110 of the sound insulation panel 10, the length W1 of the upper frame member 40 and the lower frame member 50 in the longitudinal direction (Y-axis direction) (see FIG. 2). ) Is formed so that the distance between the flanges 110A and 110A between the adjacent H-shaped columns 110 and 110 shown in FIG. 1 is less than L1 (W1 <L1).

With reference to FIG. 4, the upper surface 40C of the upper frame member 40 is a mounting surface on which sound insulation panels (sound insulation panel 10 or standard sound insulation panel 100) are laminated. The upper frame main body 42 is a member provided on the road side, and the upper ridge 46 is fixed below the member. Further, an upper receiving edge portion 44 is provided on the private land side of the upper frame main body 42. The upper end edge of the translucent plate 20 is sandwiched between the upper receiving edge portion 44 and the upper pressing edge 46. At this time, the light transmitting plate 20 is sandwiched between the upper receiving edge portion 44 and the upper pushing edge 46 so as to have an inclination angle θ1.

The road side surface of the upper frame main body 42 is the road surface 40A. Further, the surface of the upper receiving edge portion 44 on the private land side is the private ground 40B. The road surface 40A is aligned with the road surface 50A of the lower frame member 50 in the thickness direction (X-axis direction) as shown by the vertically lowered alternate long and short dash line.

The lower frame member 50 supports the lower edge of the light transmitting plate 20 when the sound insulating panel 10 is erected as a part of the sound insulating wall 200. The lower frame member 50 includes a lower frame main body 52, a lower receiving edge portion 54, an extension portion 56, and a lower push edge 58. The lower frame member 50 may be, for example, a standard sound insulation panel 100 having an extension portion 56 added to the road side of the lower frame member. A lower push edge 58 is fixed to the upper surface of the lower frame main body 52. Further, a lower receiving edge portion 54 is provided on the private land side of the lower frame main body 52.

The lower end edge of the translucent plate 20 is sandwiched between the lower receiving edge portion 54 and the lower pressing edge 58. At this time, the light transmitting plate 20 is sandwiched between the lower receiving edge portion 54 and the lower pushing edge 58 so as to have an inclination angle θ1.

An extension 56 is provided on the road side of the lower frame main body 52. The upper surfaces of the lower frame main body 52 and the extension portion 56 are aligned with each other, thereby forming the upper surface 50C of the lower frame member 50.

As illustrated in FIG. 4, the upper surface 50C is formed in a downward slope from the private ground 50B side toward the road surface 50A facing the private ground 50B side. For example, the upper surface 50C is raised by the inclination angle θ2 with respect to the horizontal plane. The inclination angle θ2 may be, for example, 90 ° −θ1 and may be, for example, 3 °.

With such a configuration, the droplets of the translucent plate that have melted down on the upper surface 50C are discharged to the road side along the upper surface 50C in the event of a vehicle fire.

The road side surface of the extension portion 56 is the road surface 50A. Further, the surface of the lower receiving edge portion 54 on the private land side is the private ground 50B. The road surface 50A is aligned with the road surface 40A of the upper frame member 40 in the thickness direction (X-axis direction).

On the other hand, the private ground 50B of the lower frame member 50 projects toward the private ground side as compared with the private ground 40B of the upper frame member 40. Due to such a deviation in the thickness direction (X-axis direction), the translucent plate 20 can be arranged in an inclined state.

Further, by adjusting the overhanging width of the lower frame member 50 toward the private land side, the position of the road surface 40A of the upper frame member 40 and the road surface 50A of the lower frame member 50 in the thickness direction (X-axis direction) can be determined. The inclination angle θ1 of the translucent plate 20 can be adjusted while making the same.

Further, as illustrated in FIG. 5, the private ground 50B is projected toward the private land side while maintaining the thickness direction (X-axis direction) position of the road surface 50A of the lower frame member 50 with respect to the wall railing column 120. This makes it possible to adjust the inclination angle θ1 of the translucent plate 20.

As illustrated in FIG. 6, the liquid retaining wall 80 may be extended above the private ground 50B of the lower frame member 50. The liquid retaining wall 80 may project above the upper surface of the lower receiving edge portion 54.

By providing such a configuration, even if the softened portion or the droplet of the translucent plate is melted down to the private land side, that is, the upper surface of the lower receiving edge portion 54 when the vehicle has a fire, the liquid retaining wall 80 provides the liquid retaining wall 80. , Further inflow to the private land side is prevented.

FIG. 7 illustrates a state of a test for confirming the flame resistance of the sound insulation panel 10 assuming a vehicle fire on the road 130. This test is, for example, a burn-through test using (compliant with) "Vol. 9 Environment-related test method" defined by the NEXCO test method.

In this burn-through test, the flame of the burner 210 is applied for a predetermined time from the road side of the translucent plate 20. As a result, the translucent plate 20 is heated and melted so that the flame can escape to the private land side. After that, the amount of the fallen substance from the sound insulation panel 10 to be tested, typically the substance melted down from the translucent plate 20, is measured.

Table 1 below shows the results of a burn-through test after variously changing the inclination angle of the translucent plate 20. No. The sample labeled with 1 is a test result when the light transmitting plate 20 is installed vertically (θ1 = 90 °) like the standard sound insulation panel 100. No. The sample labeled with 2 is a test result when the light transmitting plate 20 is installed on the road side in a forward tilted state (θ1 = 87 °) as in the sound insulation panel 10 of the present embodiment. In addition, No. The sample labeled with 3 is a test result when the translucent plate 20 is installed in a backward tilted state (θ1 = 93 °) with respect to the road.

In each test, the material of the translucent plate 20 was polycarbonate. In each test, the thickness of the translucent plate 20 was set to 5 mm in accordance with the above-mentioned "Guidelines for Designing and Construction of Attached Facilities" of Metropolitan Expressway Co., Ltd.

Further, upon heating by the burner, the translucent plate 20 was heated until the flame escaped from the heating surface (road surface) of the translucent plate 20 to the opposite surface (private ground), and burnout occurred. Specifically, first, the translucent plate 20 is heated for 60 seconds, and the presence or absence of burnout is determined. If no burnout is confirmed, heating is performed for an additional 30 seconds.

No. 1-No. For No. 3, after the burnout determination, the amount of falling objects was compared between the road side and the private land side. The ratio [%] described in the column of "burner burning time" indicates the volume ratio of the falling object on the road side and the falling object on the private land side.

As shown in Table 1, No. In 1, burnout was confirmed in the first 60 seconds. The remaining No. 2. No. In No. 3, burning through was confirmed in the following 30 seconds.

As shown in Table 1, No. It is understood that in the sound insulation panel 10 according to the present embodiment shown in 2, the proportion of melted down (falling objects) to the private land side is smaller than that of the other test results (No. 1 and No. 3). Will be done.

10 Sound insulation panel, 20 translucent plate, 30 frame member, 40 upper frame member, 40A upper frame member road surface, 40B upper frame member private ground, 42 upper frame body, 44 upper receiving edge, 46 upper ridge, 50 Lower frame member, 50A lower frame member road surface, 50B lower frame member private ground, 50C lower frame member upper surface, 52 lower frame body, 54 lower receiving edge, 56 extension, 58 lower ridge, 60, 70 vertical Frame member, 60A, 70A Road surface of vertical frame member, 62,72 vertical frame wall, 64,74 flange, 65,75 convex part, 66,76 vertical ridge, 68,78 vertical receiving edge, 80 liquid retaining wall, 110 H-shaped columns, 120 wall balustrades, 130 roads, 140 fixing members, 200 sound insulation walls.

Claims (4)

A rectangular translucent plate and
A frame member that supports the edge of the translucent plate and
The provided as part of a sound insulation wall installed on a roadside, Ru erected supported on posts, a light-transmissive sound insulating panel,
The frame member comprises a pair of vertical frame members that support the side edges of the translucent plate.
The pair of vertical frame members are formed with contact surfaces that come into contact with the columns.
The transparent plate is relatively upper side in anteversion state than the lower side is extended to the inclined with respect to the abutting surfaces to be close the contact surface of the vertical frame members, the longitudinal Supported by the frame member,
Translucent sound insulation panel. The translucent sound insulation panel according to claim 1.
The frame member includes a lower frame member which supports the lower edge of the transparent plate,
The upper surface of the lower frame member is formed in a downward slope from the private land side toward the road side.
Translucent sound insulation panel. The translucent sound insulation panel according to claim 2.
The frame member includes an upper frame member supporting the upper edge of the transparent plate,
The lower frame member projects toward the private land side as compared with the upper frame member.
Translucent sound insulation panel. The translucent sound insulation panel according to claim 2 or 3.
The lower frame member includes a liquid retaining wall extending upward on the private land side.
Translucent sound insulation panel.

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