JP2019078103A - Sound barrier, undermost layer sound insulation panel, and base plate - Google Patents

Abstract

To provide a structure which enables the maintenance inspection of an anchor bolt from the road side to the private land side while suppressing the deterioration in sound insulation property.SOLUTION: A base plate 14 has a plurality of longitudinal rib plates 24A, 24B erected thereon along the road extending direction of a road. Each of the longitudinal rib plates 24A, 24B is arranged on the side closer to the private land than any of the anchor bolts 28A to 28H inserted into a plurality of bolt holes of the base plate 14. Above the base plate 14, a cutout part, which is cut in the longitudinal and height directions, is formed to penetrate an undermost layer sound insulation panel arranged in the undermost layer among a plurality of sound insulation panels in the thickness direction. The undermost layer sound insulation panel is provided with cover members 35A, 35B which come around the private land side compared to any of the anchor bolts 28A to 28H and also close the opening due to the cutout part.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a sound insulation wall, a lowermost layer sound insulation panel which is a member of the sound insulation wall, and a base plate for supporting an H-shaped support.

  Conventionally, a noise barrier is provided as a side wall of these roads in order to prevent noise associated with vehicle travel on expressways and general roads.

  As illustrated in FIG. 10, the sound insulation wall 100 is formed on a concrete wall column 102 provided at the side of the road. The sound insulation wall 100 is, for example, a plurality of H-shaped columns 104 (H steel) erected at intervals in the longitudinal direction on the wall column 102 and a plurality of columns dropped with the flanges of adjacent H-type columns 104 and 104 as guides. And the sound insulation panel 106 of FIG.

  The H-shaped support column 104 is fixed to the wall column 102. The base plate 108 and the anchor bolt 112 are used as the fixing mechanism. The base plate 108 is a flat plate member joined to the lower end of the erected H-shaped support column 104, and is installed on the top end surface of the wall 102. The base plate 108 is rectangular in plan view, the H-shaped support column 104 is disposed at the center thereof, and bolt holes are penetrated in the thickness direction at the four corners. The bolt holes at the four corners are inserted and screwed into anchor bolts that have been aligned and embedded in the wall box, as shown in FIG.

  Further, a rib is formed on the base plate 108 as a reinforcing member. Specifically, a longitudinal rib plate 114 extending in the longitudinal direction (FIG. 11 Y axis direction) of the sound insulation wall and a thickness direction rib plate 116 extending in the thickness direction (FIG. 11 X axis direction) of the sound insulation wall Provided. According to the conventional structure, the longitudinal rib plate 114 is provided near the X-axis center of the base plate 108, traverses between the anchor bolts 112A and 112B and the anchor bolts 112C and 112D, and also with the anchor bolts 112E and 112F. It crosses between the anchor bolts 112G and 112H.

  Here, for example, in Patent Document 1, the anchor bolts 112C, 112D, 112G, and 112H provided on the road side of the longitudinal rib plate 114 among the anchor bolts 112A to 112H screwed into the base plate 108 are exposed. And maintenance work such as loose inspection and retightening of these bolts is possible.

JP, 2006-241749, A

  By the way, in the conventional sound insulation wall, although it is possible to inspect the anchor bolt provided on the road side from the longitudinal rib plate, it is difficult to inspect the anchor bolt on the private side from the longitudinal rib plate on the opposite side. It may be That is, since the sound insulation panel is laminated on the longitudinal rib plate, the line of sight from the road side is blocked by these members. Therefore, in the conventional sound insulation wall, it becomes difficult to visually inspect from the road side the anchor bolt provided on the private land side from the longitudinal rib plate and to insert a tool.

  On the other hand, it is also conceivable to access the anchor bolt on the private land side from the back side of the sound insulation wall, but for example, when the road is a viaduct, use an overhead work vehicle from the ground or a bridge inspection car from the road side It will be necessary to bring about land lease talks and road traffic restrictions each time.

  Also, in order to enable access from the road side to the private land side, for example, a portion of the lower panel 117 shown in FIG. 10 is cut away in the thickness direction to allow visual inspection of the private land side from the road side. If so, road noise may leak from the notched part to the private land and the sound insulation may be reduced.

  Therefore, an object of the present invention is to provide a sound insulation wall, a lowermost sound insulation panel, and a base plate, which can easily perform maintenance inspection of anchor bolts on a private land side from the road side while suppressing a decrease in sound insulation. .

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a noise barrier extending along a road. The sound insulation wall is provided at a lower end of the H-shaped support, a plurality of H-shaped support erected along the road extending direction, a plurality of sound-insulated panels guided and stacked by the flanges of the adjacent H-shaped support, A base plate for supporting the H-shaped support, and anchor bolts inserted into a plurality of bolt holes provided in the base plate. A plurality of longitudinal rib plates are erected on the base plate along the direction of extension of the road, and all of the longitudinal rib plates are located on the road side of any anchor bolt inserted in the plurality of bolt holes of the base plate. It is located on the opposite side of the land. Among the plurality of sound insulation panels, the lowermost sound insulation panel disposed in the lowermost layer is formed with a cutout cut in the longitudinal direction and the height direction penetrating in the thickness direction above the base plate. The lowermost-layer sound insulation panel includes a cover member that wraps closer to the private land than any of the anchor bolts and blocks the opening of the notch.

  In the above invention, the lowermost sound insulation panel may include a sound absorbing material and a casing for housing the sound absorbing material. In this case, the casing may include a front plate disposed on the road side and a back plate disposed on the private land side. Furthermore, the cover member may include a connection portion connected to the front plate.

  In the above invention, the longitudinal width of the connecting portion of the cover member may be shorter than the longitudinal width of the notch.

  In the above invention, the lowermost-layer sound insulation panel may be provided with a light transmission plate and a support frame for holding the periphery of the light transmission plate in the thickness direction. In this case, the cover member may include a connecting portion connected to the road side wall plate exposed on the road side of the support frame.

  The present invention also relates to the lowermost sound insulation panel disposed in the lowermost layer of the sound insulation panels stacked and installed on the sound insulation wall extended along the road. Here, a plurality of sound insulation walls are erected along the road extending direction, and the flanges guide the sound insulation panels with the flanges thereof, and the base plate for providing the lower ends of the H columns and supporting the H columns. And anchor bolts inserted into a plurality of bolt holes provided in the base plate. In the lowermost sound insulation panel, a notch cut in the longitudinal direction and the height direction is formed in the thickness direction above the base plate. In addition, a cover member is provided which is closer to the private land than any of the anchor bolts and closes the opening of the notch.

  In the present invention, a plurality of sound insulation walls extending along the road are provided at the lower end of an H-shaped support pillar erected along the road extending direction and the flanges guide the sound insulation panel, and the H-shaped support is supported. Related to the base plate. The base plate includes a plurality of bolt holes into which a plurality of anchor bolts are inserted, and a plurality of longitudinal rib plates erected along the extending direction of the road. Any of the longitudinal rib plates is disposed closer to the roadside and on the side of the private land than any anchor bolt inserted into the plurality of bolt holes of the base plate.

  ADVANTAGE OF THE INVENTION According to this invention, maintenance inspection of the anchor bolt of a private land side is attained from the road side, suppressing the fall of a sound insulation.

It is a perspective view which illustrates the sound insulation wall concerning this embodiment. It is a perspective view explaining the structure of a base plate. It is a perspective view which illustrates a lowermost-layer sound insulation panel. It is an exploded perspective view which illustrates each composition of the lowest layer sound insulation panel. It is a plane view sectional view explaining a dimensional relation to a H-shaped support pillar of a lowermost layer panel. It is a figure explaining an assembly process (1/2) of a noise insulation wall concerning this embodiment. It is a figure explaining the assembly process (2/2) of the noise insulation wall which concerns on this embodiment. It is a perspective view which illustrates another embodiment of the lowest sound insulation panel. It is a plane view sectional view explaining a dimensional relation to a H-shaped support pillar of a lowermost layer panel. It is a perspective view which illustrates the sound insulation wall concerning a prior art. It is a perspective view which illustrates the base plate concerning a prior art.

  Among the sound insulation walls according to the present embodiment, in particular, the lower structure is illustrated in FIG. In FIGS. 1 to 11, the height direction axis (vertical direction axis) of the sound insulation wall is the Z axis, the longitudinal direction axis (extension direction axis) of the sound insulation wall is the Y axis, and the thickness direction axis of the sound insulation wall is the X axis I assume. The X axis, the Y axis, and the Z axis are orthogonal to one another.

  The sound insulation wall extends to the side of the road and blocks the propagation of road noise to private areas outside the road. For example, the sound insulation wall is provided on the side of a general road or an expressway along the extending direction of the road. Further, the sound insulation wall is erected on a wall column 18 erected at the side of the road.

  In the following, regarding the sound insulation wall and other components, the side relatively closer to the road will be referred to as the road side, and the opposite side facing it will be referred to as the private land side as appropriate.

  The sound insulation wall includes a sound insulation panel 10, an H-shaped support 12, a base plate 14, and a lower panel 16. The H-shaped support 12 is a so-called H steel, and is provided with a web 20 and flanges 22A and 22B as shown by a broken line in FIG. The web 20 is disposed perpendicularly (parallel to the X-axis direction) to the extending direction of the sound insulation wall. Further, at the lower end of the web 20, a wire hole 21 may be provided through which a reinforcing wire (not shown) extending in the longitudinal direction is passed. The flanges 22A and 22B face each other with the web 20 interposed therebetween, and are disposed along the extension direction of the sound insulation wall (parallel to the Y-axis direction).

  A plurality of H-shaped columns 12 are erected at intervals along the extension direction of the sound insulation wall. The standing interval is determined in accordance with the width (length in the Y-axis direction) of the sound insulation panel 10. For example, when the sound insulation panel 10 having a width of 1960 mm is used, the distance between the H-shaped columns 12 and 12 is 2000 mm.

  A base plate 14 supporting the H-shaped support 12 is provided at the lower end (the end in the negative direction of the Z-axis) of the H-shaped support 12. The base plate 14 is a flat plate parallel to the X-Y plane, and is disposed on the top end face of the wall box 18. The base plate 14 is joined to the lower end of the H-shaped support 12. For example, both are welded. In addition, the H-shaped support 12 is disposed at the center of the base plate 14 in plan view (with a line of sight parallel to the Z-axis direction) at the bonding position.

  A perspective view of the base plate 14 is illustrated in FIG. The H-shaped support 12 is indicated by a broken line. The base plate 14 includes a plurality of bolt holes (not shown), a longitudinal rib plate 24 and a thickness rib plate 26.

  The plurality of bolt holes are penetrated in the thickness direction (Z axis direction) of the base plate 14. Each bolt hole is aligned with the fixing hole in the wall box 18, and the anchor bolt 28 is inserted (screwed) into each bolt hole and the fixing hole. Reflecting tolerances, the bolt holes may be long holes in the longitudinal direction (Y-axis direction), for example.

  Bolt holes are provided at the four corners of the base plate 14 as understood from the arrangement of the anchor bolts 28 in FIG. For example, two bolt holes are provided on one end side in the longitudinal direction of the base plate 14 and on the side of the common ground, and the anchor bolts 28A and 28B are inserted into these. Further, two bolt holes are provided on one end side in the longitudinal direction of the base plate 14 and on the road side, and the anchor bolts 28C and 28D are inserted into these. Furthermore, two bolt holes are provided on the other end side in the longitudinal direction of the base plate 14 and on the side of the common ground, and the anchor bolts 28E and 28F are inserted into these. Further, two bolt holes are provided at the other end side in the longitudinal direction of the base plate 14 and on the road side, and the anchor bolts 28G and 28H are inserted into these.

  On the base plate 14, a plurality of longitudinal rib plates 24A and 24B and thickness rib plates 26A to 26D are erected. These rib plates function as reinforcements for the base plate 14.

  The thickness direction rib plates 26A to 26D suppress the deformation of the base plate 14 against the load in the thickness direction (X-axis direction). The thickness direction rib plates 26A to 26D are provided at intervals along the longitudinal direction (Y-axis direction) of the sound insulation wall, and extend in parallel to the thickness direction (X-axis direction) of the sound insulation wall. The thickness direction rib plates 26A to 26D are disposed so as to be accommodated in the base plate 14 in a plan view, in other words, extended in a range not exceeding the X axis direction end of the base plate 14.

  In addition, wire holes 30A to 30D may be formed in the thickness direction rib plates 26A to 26D for passing reinforcing wires (not shown) extending in the longitudinal direction.

  Also as shown, anchor bolts 28A-28H are provided between the thickness direction rib plates 26A-26D. According to such a structure, when the sound insulation wall is viewed in front from the road side (as viewed in a line of sight parallel to the X-axis direction), thickness direction rib plates 26A to 26D extend in parallel to the front view direction. Are arranged so as not to block the anchor bolts 28A to 28H.

  Further, the Y-axis direction intervals (pitches) of the adjacent thickness direction rib plates 26A to 26D may be intervals at which the fastening jig can be inserted into the anchor bolts 28B, 28D, 28E, 28G disposed therebetween. It is suitable. For example, the Y-axis direction interval (pitch) of 26A to 26D is 100 mm.

  The longitudinal rib plates 24A and 24B suppress the deformation of the base plate 14 against the load in the longitudinal direction (Y-axis direction). The longitudinal rib plates 24A and 24B extend parallel to the longitudinal direction (Y-axis direction) of the sound insulation wall. The longitudinal rib plates 24A, 24B are arranged to be accommodated in the base plate 14 in a plan view. In other words, the longitudinal rib plates 24A and 24B extend so as not to exceed the Y-axis direction end of the base plate 14.

  The longitudinal rib plates 24A and 24B according to the present embodiment are both disposed closer to the private land than any of the anchor bolts 28A to 28H. When the sound insulation wall is viewed in front from the road side, the longitudinal rib plates 24A and 24B are arranged so as to block the rear side (private land side) from themselves in the extending direction. So, in this embodiment, all longitudinal direction rib plates 24A and 24B are arrange | positioned on the private land side rather than any anchor bolt 28A-28H, and it is set as the arrangement | positioning which does not disturb visual recognition of anchor bolts 28A-28H.

  The lowermost-layer sound insulation panel 32 according to the present embodiment is illustrated in FIG. A plurality of sound insulation panels 10 are stacked by being guided by the flanges 22A and 22B of the adjacent H-shaped columns 12 and 12, respectively. Among these, the lowest sound insulation panel 32 is disposed in the lowest layer. The lowermost sound insulation panel 32 is different in structure from the upper sound insulation panel 10, and notches 34A and 34B are formed at both lower ends.

  If the height direction rib plates 26A to 26D of the base plate 14 are sufficiently high and the worker can easily access the anchor bolts 28A, 28B, 28E, 28F on the private land side, the lowest sound insulation panel 32 is essential Instead, the normal sound insulation panel 10 may be disposed in the lowermost layer. On the other hand, when the height direction of the rib plates 26A to 26D is not sufficient, for example, when the operator's hand is narrow enough to reach the anchor bolts 28A, 28B, 28E, 28F on the private land side, the private land side The lowermost sound insulation panel 32 is used to secure visibility and work space for the anchor bolts 28A, 28B, 28E, 28F.

  In addition, when the longitudinal rib plates 24A and 24B of the base plate 14 are disposed on the road side relative to a part of the anchor bolts as in the prior art, the anchors on the civilian side than the longitudinal rib plates 24A and 24B The lowermost sound insulation panel 32 is used to secure the visibility of the bolt and the work space.

  The notches 34A and 34B are both formed to be located above the base plate 14 at the time of construction of the sound insulation wall. The notches 34A and 34B are notched in the longitudinal direction (Y-axis direction) and the height direction (Z-axis direction), and are configured to penetrate in the thickness direction (X-axis direction). From the above configuration, when the lowermost sound insulation panel 32 is viewed from the road side, it is visually recognized that the openings are formed by the notches 34A and 34B. This opening is closed (covered) by the cover members 35A and 35B.

  An exploded perspective view illustrating components of the lowermost sound insulation panel 32 is shown in FIG. The lowest sound insulation panel 32 includes a sound absorbing material 36, a casing 38, and a cover member 35. The sound absorbing material 36 is made of, for example, a glass wool sound absorbing board or polyester. Further, the lower sides of the sound absorbing material 36 are notched and constitute a part of the notches 34A and 34B.

  The casing 38 includes a front plate 38A, a back plate 38B, and side plates 38C and 38D. The front plate 38A is disposed on the road side at the time of construction of the sound insulation wall. The front plate 38A has an open window, also called a grille or gully, cut therein to guide the road noise to the inside and absorb it to the sound absorbing material 36. Further, the lower sides of the front plate 38A are notched and constitute a part of the notches 34A and 34B. The notch width W0 (length in the Y direction) of the front plate 38A is formed longer than the flange length W2 (see FIG. 4) of the side plate 38C.

Furthermore, a flat plate region in which the grille is not formed is formed between the notches on the lower sides of the front plate 38A and the upper grille. As will be described later, this flat area becomes a bonding surface 39 to be bonded to the cover member 35.

  A top plate 38AA is connected to the front plate 38A. The top panel 38AA is inclined downward (in the negative Z-axis direction) from the front plate 38A to the back plate 38B along the thickness direction (X-axis direction) of the lowermost-layer sound insulation panel 32. Further, at the connection portion between the front plate 38A and the top plate 38AA, a step recessed inward of the casing 38 is formed across the width direction. Such a top surface shape corresponds to the bottom surface shape of the sound insulation panel 10 in the upper layer.

  Further, on both side ends of the top plate 38AA, wire notches 40 for passing a wire (not shown) extending in the vertical direction (Z-axis direction) are provided.

  The back plate 38B is disposed on the private land side at the time of construction of the sound insulation wall. At the center in the height direction (Z-axis direction) of the back plate 38B, a recess for supporting the sound absorbing material 36 inside is provided. Further, lower sides of the back plate 38B are notched, and constitute a part of the notches 34A and 34B.

  The top plate 38BA is connected to the upper side of the back plate 38B, and the bottom plate 38BB is connected to the lower side. The top plate 38BA has a shape corresponding to the top plate 38AA of the front plate 38A. That is, top board 38BA is formed in the upslope shape which inclines upwards from the private land side toward front board 38A. The bottom plate 38BB is formed to be parallel to the top plate 38BA, and can be stacked in the vertical direction.

  The side plates 38C and 38D are provided between the front plate 38A and the back plate 38B. The side plates 38C and 38D are formed with flanges extending in the longitudinal direction (Y-axis direction) at the front and back (X-axis direction) and the upper part, and the side plates 38C, the front plate 38A, and the back plate 38B are joined by the flanges. Ru. Bonding is performed, for example, by rivets.

  The lower sides of the side plates 38C and 38D are cut at lengths corresponding to the notches on the lower sides of the front plate 38A and the back plate 38B.

  The cover members 35A and 35B are substantially three-sided panels including a top panel 42, a side panel 44, and a back panel 48, respectively. The top panel 42 has a rear end (an end in the positive direction of the X-axis) connected to the upper end of the back panel 48 and a front end provided with a joint flange 50 rising in the Z-axis direction.

  The joint flange 50 is joined to the joint surface 39 of the front plate 38A. In this respect, the upper surface panel 42 serves as a connecting portion connecting the back panel 48 closing the opening of the notches 34A and 34B and the front plate 38A.

  The joining is performed, for example, by riveting. By providing the front plate 38A with a joint surface with the cover members 35A and 35B, the joint portion is exposed on the road side. Therefore, the joining state of the cover members 35A and 35B can be managed visually from the road side.

  The width W3 of the top panel 42 is formed to be shorter than the notch width W0 on the lower sides of the front plate 38A. Further, the top panel 42 is disposed near the center of the front plate 38A.

  An AA sectional view of FIG. 3 is shown in FIG. In addition, the cross-sectional view of the H-shaped support | pillar 12 is also described for contrast of size. As shown in this figure, the cover members 35A and 35B move closer to the private land than the H-shaped support 12. On the other hand, the lowermost sound insulation panel 32 needs to be guided between the flanges 22A and 22B of the H-shaped column. Therefore, in the present embodiment, the width W3 of the upper surface panel 42 is made shorter than the notch width W0 of the front plate 38A, and the cover members 35A and 35B are disposed (retracted) on the center side of the lowermost sound insulation panel 32. This structure enables the H-shaped support 12 to guide the lowermost sound insulation panel 32 without interference with the cover members 35A and 35B.

  Further, as shown in FIG. 5, the length in the thickness direction (X-axis direction) of the upper surface panel 42 is set such that the rear panel 48 provided at the end does not interfere with the H-shaped support 12. It will be determined. Specifically, even if the lowermost sound insulation panel 32 is disposed closest to the road, that is, even if the front plate 38A is in contact with the inner surface of the road side flange 22A of the H-shaped column 12, the back panel 48 is the H-shaped column 12 The length (the length in the X-axis direction) of the upper surface panel 42 is determined so as to be disposed closer to the private land side than the private land side flange 22B without being in contact with the private land side flange 22B.

  For example, the distance L1 from the road side exposed surface of the front plate 38A to the road side of the back panel 48 is longer than the distance L2 from the inner surface of the road side flange 22A of the H-shaped column 12 to the outer surface As such, the length of the top panel 42 is determined.

  Returning to FIG. 4, the side panel 44 is extended downward from the Y-axis positive direction end of the top panel 42. The extension height H2 is formed to be higher (longer) than the notch height H1 on the lower side of the front plate 38A. Specifically, the sum of the height in the Z-axis direction of the lower panel 16 (see FIG. 6) provided below the lowermost sound insulation panel 32 and the notch height H1 on both sides below the front plate 38A is an extension of the upper panel 42. The installation height is H2. Further, at the lower end of the side panel 44, a wire hole 30E for inserting a wire (not shown) is formed.

  The back panel 48 closes (covers) the opening by the notches 34A and 34B. The extension height of the back panel 48 is equal to that of the side panel 44 and is H2. Further, as shown in FIG. 5, the back panel 48 turns to the private land side (rear side) from the H-shaped support 12. Since the back panel 48 has a role of closing the opening by the notches 34A and 34B, it is preferable that the extension width W1 thereof is equal to or exceeds the notch width W0 on the lower side of the front plate 38A.

  The construction process of the sound insulation wall concerning this embodiment is illustrated by FIG. In order to clarify the illustration, only a part of the H-shaped support 12 is shown. A base plate 14 is provided at the lower end of the H-shaped column 12, and anchor bolts 28A to 28H are inserted (screwed) into the bolt holes. As described above, since the longitudinal rib plates 24A and 24B are disposed closer to the private land than any of the anchor bolts 28A to 28H, visual recognition of the anchor bolts 28A to 28H from the road side without interference with the plates And inspection becomes possible.

  A lower panel 16 is installed on the top end face of the wall column 18 adjacent to the base plate 14. The longitudinal width W4 of the lower panel 16 is equal to the width W5 of the lowermost end of the lowermost sound insulation panel 32. In addition, the lower panel 16 and the base plate 14 may be provided with a predetermined clearance.

  The side of the lowermost sound insulation panel 32 is inserted between the flanges 22A and 22B of the H-shaped column 12 and lowered downward. At this time, the side panels 44 of the cover members 35A and 35B are inserted into the clearance between the lower panel 16 and the base plate 14.

  FIG. 7 illustrates the arrangement of the base plate 14, the H-shaped columns 12, and the cover members 35A and 35B when the lowermost sound insulation panel 32 is installed on both sides of the H-shaped columns 12. As shown in this figure, each of the anchor bolts 28A to 28H is disposed closer to the road than the longitudinal rib plates 24A and 24B, so that visual recognition from the road side becomes possible. Furthermore, the upper part is covered by cover members 35A and 35B, and the work space for the ceiling height is secured.

  In addition, since the openings of the lowermost sound insulation panel 32 due to the notches 34A and 34B are closed (covered) by the back panel 48 of the cover members 35A and 35B in particular, the propagation of road noise to the private land is a cover member 35A, Suppressed by 35B. That is, the decrease in the sound insulation is suppressed. Further, as illustrated, since the back panel 48 of the cover members 35A and 35B is disposed closer to the private land than any of the anchor bolts 28A to 28H, the cover members 35A and 35B can visually recognize the anchor bolts 28A to 28H. Obscuring is avoided.

<Other Embodiments>
In the above-mentioned embodiment, although the sound insulation panel of the sound absorption material type in which the sound absorption material 36 is accommodated was illustrated as the sound insulation panel 10 and the lowest sound insulation panel 32, it does not restrict to this form. For example, as illustrated in FIG. 8, a translucent sound insulation panel and a lowermost sound insulation panel 70 may be used. Also in this case, the lowermost-layer sound insulation panel 70 is formed above the base plate 14 with the notches 34A and 34B cut in the longitudinal direction and the height direction penetrating in the thickness direction. In addition, the lowermost-layer sound insulation panel 70 includes cover members 35A and 35B which are closer to the private land than any of the anchor bolts 28A to 28H and close the openings of the notches 34A and 34B.

  As shown in the figure, the light transmission type lowermost layer sound insulation panel 70 includes a light transmission plate 72 and a support frame 74. The light transmitting plate 72 is a plate member having a downwardly convex shape, and is made of, for example, a resin material such as acryl or the like, glass, or a plate member obtained by bonding them.

  The support frame 74 supports the light transmitting plate 72 by sandwiching the periphery of the light transmitting plate 72 in the thickness direction. The support frame 74 is a downwardly convex member similar to the light transmission plate 72, and includes vertical frames 76 A and 76 B extending in the height direction of the light transmission plate 72 and a longitudinal direction of the light transmission plate 72. It includes horizontal frames 78A and 78B extending. The vertical frames 76A and 76B and the horizontal frames 78A and 78B are coupled in a substantially frame shape by a coupling member (not shown).

  At the time of connection, the respective frames are connected such that the support grooves 79 formed on the inner surfaces of the horizontal frames 78A and 78B and the vertical frames 76A and 76B are respectively aligned. By inserting the light transmitting plate 72 into the support groove 79, the light transmitting plate 72 is supported. In addition, you may provide the pressing frame member which biases the light transmission board 72 to thickness direction in horizontal frame 78A, 78B or vertical frame 76A, 76B. Of the horizontal frames 78A and 78B, the horizontal frame 78B provided on the lower side is formed in a downward convex shape so as to correspond to the cutouts 34A and 34B.

  Further, in the same manner as in FIG. 4, the cover members 35A and 35B are substantially three-sided panels provided with the top panel 42, the side panel 44, and the back panel 48, respectively. The upper surface panel 42 (connection part) is extended from the private land side of the horizontal frame 78B to the road side. The front end of the top panel 42 is provided with a bonding flange 50 which rises in the Z-axis direction. The joint flange 50 is joined to the road side wall board 80 exposed to the road side among the wall boards which comprise the horizontal frame 78B. By providing the road side wall plate 80 with the joint surface with the cover members 35A and 35B, the joint portion is exposed to the road side. Therefore, the joining state of the cover members 35A and 35B can be managed visually from the road side.

  Further, similarly to FIG. 5, as illustrated in FIG. 9, the width W3 of the top panel 42 of the cover members 35A and 35B is made shorter than the notch width W0 by the vertical frames 76A and 76B and the horizontal frames 78A and 78B. In addition, the cover members 35A and 35B are disposed (retracted) on the center side of the lowermost sound insulation panel 70. This structure enables the H-shaped support 12 to guide the lowermost sound insulation panel 70 without interference with the cover members 35A and 35B.

10, 70 sound insulation panel, 12 H-shaped column, 14 base plate, 16 lower panel, 18 wall column, 24A, 24B longitudinal rib plate, 26A-26D thickness direction rib plate, 28A-28H anchor bolt, 32 lowermost sound insulation panel , 34A, 34B cutouts, 35A, 35B cover members, 38 casings, 38A front plates, 38B rear plates, 38C, 38D side plates, 39 joint surfaces, 42 top panels, 44 side panels, 48 rear panels, 50 joint flanges.

Claims (7)

It is a sound insulation wall extended to the side of the road,
H-shaped columns erected in a plurality along the extending direction of the road;
A plurality of sound insulation panels guided and stacked on the flanges of the adjacent H-shaped columns;
A base plate provided at a lower end of the H-shaped support and supporting the H-shaped support;
Anchor bolts inserted into a plurality of bolt holes provided in the base plate;
Equipped with
A plurality of longitudinal rib plates are erected on the base plate along the extending direction of the road, and any of the longitudinal rib plates is any of the anchor bolts inserted into the plurality of bolt holes of the base plate Rather, it is located on the side of the private land facing the road side,
Among the plurality of sound insulation panels, the lowermost sound insulation panel disposed in the lowermost layer is formed with a notch cut in the longitudinal direction and height direction above the base plate, penetrating in the thickness direction ,
The noise insulation wall, wherein the lowermost sound insulation panel includes a cover member that extends closer to the private land than any of the anchor bolts and closes the opening of the notch. The noise insulation wall according to claim 1, wherein
The lowermost sound insulation panel comprises a sound absorbing material and a casing for containing the sound absorbing material,
The casing includes a front plate disposed on the road side and a back plate disposed on the private land side.
The noise insulation wall, wherein the cover member includes a connection portion connected to the front plate. The noise insulation wall according to claim 2, wherein
The noise insulation wall whose longitudinal direction width of the said connection part of the said cover member is shorter than the longitudinal direction width | variety of the said notch part. The noise insulation wall according to claim 1, wherein
The lowermost-layer sound insulation panel includes a light transmission plate, and a support frame for holding the periphery of the light transmission plate in the thickness direction.
The noise insulation wall, wherein the cover member includes a connection portion connected to a road side wall plate exposed to the road side of the support frame. The noise insulation wall according to claim 4, wherein
The noise insulation wall whose longitudinal direction width of the said connection part of the said cover member is shorter than the longitudinal direction width | variety of the said notch part. A lowermost sound insulation panel disposed in the lowermost layer of the sound insulation panels stacked on the sound insulation wall extended along the road, wherein the sound insulation walls are erected in a plurality along the extending direction of the road An H-shaped column for guiding and laminating the sound insulation panel, a base plate provided at the lower end of the H-shaped column and supporting the H-shaped column, and anchor bolts inserted into a plurality of bolt holes provided in the base plate And
A notch cut in the longitudinal direction and the height direction is formed in the thickness direction above the base plate,
The lowest layer sound insulation panel provided with the cover member which closes on the private land side rather than any said anchor bolt, and closes the opening by the said notch part. It is a base plate which is provided at the lower end of an H-shaped support pillar which is installed along the extension direction of the road and which guides the sound insulation panel with a plurality of flanges extending along the extending direction of the road. ,
Multiple bolt holes into which multiple anchor bolts are inserted, and
A plurality of longitudinal rib plates erected along the extending direction of the road;
Equipped with
A base plate, wherein any one of the longitudinal rib plates is disposed closer to the roadside than any of the anchor bolts inserted into the plurality of bolt holes of the base plate.