Support posts for sound barriers and method for constructing sound barriers

Abstract

To provide a support column for a soundproof wall that can improve the fatigue resistance of the joint portion with the side of the curb. [Solution] The soundproof wall support column 1 according to this embodiment is to which a soundproof panel is fixed and joined to the side surface 91 of a concrete curb 9, and comprises a U-shaped bent plate member 21, 31 having first flanges 22, 32 joined to the side surface 91 of the curb 9 by curb joining bolts 61a, 61b, a web 23, 33 formed by bending from the first flanges 22, 32, and a second flange 24, 34 formed by bending from the webs 23, 33. The web 23 of the bent plate member 21 and the web 33 of the bent plate member 31 are joined by joining bolts 51.

Description

TECHNICAL FIELD

[0001] The present invention relates to a sound insulation wall support post to which a sound insulation panel is fixed and which is joined to a side surface of a concrete ground cover, and a method for constructing a sound insulation wall. BACKGROUND ART

[0002] Conventionally, in order to reduce noise on roads, railways and the like, H-shaped steel support posts are erected at predetermined intervals along the extending direction of roads, railways and the like, and sound insulation walls with fixed sound insulation panels each incorporating a sound absorbing material such as glass wool between the respective support posts are installed. The support posts to which the sound insulation panels are fixed may be joined to ground covers provided on both sides of roads, railways and the like. As techniques for joining the support posts of a sound insulation wall to the side surface of a ground cover, for example, Patent Documents 1 and 2 are disclosed.

[0003] In the technique disclosed in Patent Document 1, members including the support post are fixed to a road railing by anchor bolts or the like. A mounting plate is joined to the support post, and anchor bolts are provided on this mounting plate. The mounting plate for providing the anchor bolts is normally joined to the support post by welding.

[0004] In the technique disclosed in Patent Document 2, a metal plate of a seat plate composed of a metal plate and a rubber plate fixed thereto is welded and fixed to the middle portion and the lower portion of the flange of the support post. The support post is fixed to the road railing wall by bolts penetrating through the road railing wall and the seat plate.

[0005] By the way, sound insulation walls for roads and railways are appropriately renewed over time, but since renewal requires significant time and effort, it is required to extend the service life of the support post members in order to reduce the renewal frequency itself. In addition, when newly constructing a sound insulation wall, it is important to consider the life cycle cost with renewal in mind.

[0006] Sound barriers are also installed on elevated bridges, where repeated loads occur, such as floor plate vibrations and wind loads generated by passing vehicles. In this regard, the technology disclosed in Patent Documents 1 and 2 involves welding mounting plates for anchor bolts to the support columns. Therefore, when repeated loads act and force is transmitted between the curb and the sound barrier panel, this transmission occurs via these mounting plates. There is concern that fatigue cracks may occur in the welded portion between the support column and the mounting plate due to repeated loads, particularly at the weld toe and weld root. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2021-25259 [Patent Document 2] Japanese Patent Application Publication No. 50-76824 [Overview of the project] [Problems that the invention aims to solve]

[0008] This invention has been made in view of the above circumstances, and its purpose is to provide a support column for a soundproof wall and a method for constructing a soundproof wall that can improve the fatigue resistance of the joint portion with the side surface of the curb. [Means for solving the problem]

[0009] The soundproof wall support column according to the present invention is a soundproof wall support column to which a soundproof panel is fixed and joined to the side surface of a concrete curb, and is characterized by comprising a bent plate member that is U-shaped in plan view, having a first flange joined to the side surface of the curb by curb joining bolts, a web formed by bending from the first flange, and a second flange formed by bending from the web.

[0010] The method for constructing a soundproof wall according to the present invention is a method for constructing a soundproof wall using a support column for a soundproof wall according to the present invention, comprising: a joining step of joining the first flange to the side surface of the curb with the curb joining bolts; and a fixing step of fixing the soundproof panel to the support column for a soundproof wall, wherein in the joining step, after joining the first flange of the first bent plate member with the curb joining bolts, the web of the second bent plate member is brought into opposition with the web of the first bent plate member, and the first flange of the second bent plate member is joined to the side surface of the curb with the curb joining bolts.

[0011] The method for constructing a soundproof wall according to the present invention is a method for constructing a soundproof wall using soundproof wall support columns according to the present invention, comprising a joining step of joining the first flange to the side surface of the curb with curb joining bolts, and a fixing step of fixing the soundproof panel to the soundproof wall support columns, wherein in the joining step, the web of the first bent plate member and the web of the second bent plate member, which are opposite to each other, are joined, and then the first flange of the first bent plate member and the first flange of the second bent plate member are joined to the side surface of the curb with curb joining bolts. [Effects of the Invention]

[0012] According to the present invention, the present invention provides a bent plate member that is U-shaped in plan view, having a first flange joined to the side surface of the curb by curb joining bolts, a web formed by bending from the first flange, and a second flange formed by bending from the web. As a result, when repeated loads are applied and force is transmitted between the support column and the curb, the force is transmitted mainly through the curb joining bolts and the bent plate member formed by bending. Since there are no welded parts in the member to which the load is mainly transmitted, the fatigue resistance of the joint portion of the soundproof wall support column joined to the side surface of the curb can be improved. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view showing a soundproof wall using soundproof wall supports according to the first embodiment. [Figure 2] Figure 2 is a front view showing a sound insulation wall using the sound insulation wall support post according to the first embodiment. [Figure 3] Figure 3 is an exploded perspective view showing the sound insulation wall support post according to the first embodiment. [Figure 4] Figure 4 is a front view showing the sound insulation wall support post according to the first embodiment. [Figure 5] Figure 5 is a cross-sectional view showing the sound insulation wall support post according to the first embodiment. [Figure 6] Figure 6 is a cross-sectional view showing the sound insulation wall support post according to the second embodiment. [Figure 7] Figure 7 is a cross-sectional view showing the sound insulation wall support post according to the third embodiment. [Figure 8] Figure 8 is an exploded perspective view showing the sound insulation wall support post according to the fourth embodiment. [Figure 9] Figure 9 is a front view showing the sound insulation wall support post according to the fourth embodiment. [Figure 10] Figure 10 is a cross-sectional view showing the sound insulation wall support post according to the fifth embodiment. [Modes for Carrying Out the Invention]

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0015] (First Embodiment) As shown in Figure 1 and Figure 2, the sound insulation wall 100 is provided on a concrete curb 9. The sound insulation wall 100 includes a sound insulation wall support post 1 joined to the side surface 91 of the curb 9, and a sound insulation panel 8 fixed to the sound insulation wall support post 1.

[0016] The sound insulation panel 8 is, for example, internally provided with a sound absorbing material to exhibit predetermined sound insulation performance. Both ends of the sound insulation panel 8 in the left-right direction are respectively fixed to the sound insulation wall support posts 1. A plurality of the sound insulation panels 8 are provided in the up-down direction between a pair of the sound insulation wall support posts 1, 1.

[0017] As shown in Figure 3, a sound insulation wall support column 1 includes a pair of bent plate members 21 and 31. The bent plate members 21 and 31 are formed in a U-shape in plan view.

[0018] The bent plate member 21 has a first flange 22 joined to the side surface 91 of the ground cover 9 by ground cover joining bolts 61, a web 23 formed by bending from the first flange 22, and a second flange 24 formed by bending from the web 23. The second flange 24 is arranged to face the first flange 22.

[0019] The bent plate member 31 has a first flange 32 joined to the side surface 91 of the ground cover 9 by ground cover joining bolts 61, a web 33 formed by bending from the first flange 32, and a second flange 34 formed by bending from the web 33. The second flange 34 is arranged to face the first flange 32.

[0020] The first flange 22 has a widened portion 221 and a narrowed portion 222 formed above the widened portion 221. The upper end 223 of the widened portion 221 is arranged above the upper surface 92 of the ground cover 9. The widened portion 221 is formed to be wider than the second flange 24. The narrowed portion 222 is formed to have the same width as the second flange 24. At the upper end 223 of the widened portion 221, an inclined portion 25 connected to the narrowed portion 222 is formed. The inclined portion 25 reduces the weight of the first flange 22 of the bent plate member 21, and improves the construction efficiency of the sound insulation wall 100.

[0021] The first flange 32 has a widened portion 321 and a narrowed portion 322 formed above the widened portion 321. The upper end 323 of the widened portion 321 is arranged above the upper surface 92 of the ground cover 9. The widened portion 321 is formed to be wider than the second flange 34. The narrowed portion 322 is formed to have the same width as the second flange 34. At the upper end 323 of the widened portion 321, an inclined portion 35 connected to the narrowed portion 322 is formed. The inclined portion 35 reduces the weight of the first flange 32 of the bent plate member 31, and improves the construction efficiency of the sound insulation wall 100.

[0022] The first flange 22 of the bent plate member 21 is positioned flush with the first flange 32 of the bent plate member 31 in the direction normal to the first flange 22.

[0023] Multiple holes 27 and 37 are formed vertically in the first flanges 22 and 32, through which anchor bolts 61 (61a and 61b) for anchor connection are passed. The holes 27 and 37 through which the anchor bolts 61 pass are elongated holes that extend horizontally. This allows the position of the anchor bolts 61 to be adjusted. Anchor bolts or the like are used for anchor connection bolts 61, and their tips are embedded in the anchor 9.

[0024] Multiple anchor bolts 61a are arranged on the first flange 22 in the height direction. The anchor bolts 61a are arranged in a single row on the first flange 22 along the vertical direction. This makes it easier to attach the first flange 22 parallel to the side surface 91.

[0025] Multiple anchor bolts 61b are arranged on the first flange 32 in the height direction. The anchor bolts 61b are arranged in a single row on the first flange 32 along the vertical direction. This makes it easier to attach the first flange 32 parallel to the side surface 91.

[0026] The first flange 22 has a projection 26 that protrudes laterally beyond the side end 24a of the second flange 24. A hole 27 is formed in the projection 26. This ensures that the extension of the axis of the curb joining bolt 61a is not obstructed by the second flange 24. This makes it easier to install the curb joining bolt 61a that joins the first flange 22 to the side surface 91 of the curb 9.

[0027] The first flange 32 has a projection 36 that protrudes laterally beyond the side end 34a of the second flange 34. A hole 37 is formed in the projection 36. This ensures that the extension of the axis of the curb joining bolt 61b is not obstructed by the second flange 34. This makes it easier to install the curb joining bolt 61b that joins the first flange 32 to the side surface 91 of the curb 9.

[0028] The webs 23 and 33 are in contact with each other and are joined by connecting bolts 51. Holes are formed in the webs 23 and 33 through which the connecting bolts 51 pass. The connecting bolts 51 allow the bent plate member 21 and the bent plate member 31 to be joined, thereby increasing the rigidity of the soundproof wall support column 1. For example, high-strength bolts are used as connecting bolts 51. Nuts are screwed onto the connecting bolts 51. In this invention, the connecting bolts 51 may be omitted.

[0029] The widths of the second flanges 24 and 34 are formed uniformly in the height direction.

[0030] As shown in Figure 5, a soundproofing panel 8 is placed between the first flange 22 and the second flange 24. The soundproofing panel 8 is fixed to the first flange 22, for example, via a fixing bracket 81.

[0031] A soundproofing panel 8 is positioned between the first flange 32 and the second flange 34. The soundproofing panel 8 is fixed to the first flange 32, for example, via a fixing bracket 81.

[0032] <Example 1 of how to construct a soundproof wall 100> Next, a first example of a method for constructing a soundproof wall 100 using the soundproof wall support column 1 in this embodiment will be described. In the first example, the bent plate member 21 and the bent plate member 31 are joined separately to the side surface 91 of the curb 9.

[0033] The construction method for the soundproof wall 100 includes a joining step of joining the first flanges 22 and 32 to the side surface 91 of the curb 9 using curb joining bolts 61a and 61b, and a fixing step of fixing the soundproof panel 8 to the soundproof wall support column 1.

[0034] In detail, first, in the joining process, the first flange 22 of the first bent plate member 21 is joined by a curb joining bolt 61a.

[0035] Subsequently, in the joining process, the web 23 of the first bent plate member 21 is brought into contact with the web 33 of the second bent plate member 31, and the first flange 32 of the second bent plate member 31 is joined to the side surface 91 of the curb 9 by curb joining bolts 61b.

[0036] Alternatively, in the joining process, after joining the first flange 22 of the first bent plate member 21 with the curb joining bolt 61a, the opposing webs 23 and web 33 may be joined together with joining bolt 51.

[0037] This allows the soundproof wall support posts 1 to be joined to the side surface 91 of the curb 9. The above joining process is repeated to join a pair of soundproof wall support posts 1, which are spaced apart laterally from each other, to the side surface 91 of the curb 9.

[0038] Subsequently, in the fixing process, the soundproofing panel 8 is fixed between the pair of soundproofing wall support columns 1, 1.

[0039] By repeatedly performing the above joining and fixing processes, a soundproof wall 100 can be constructed.

[0040] In the first example of the construction method for the soundproof wall 100, the bent plate member 21 and the bent plate member 31 were separately joined to the side surface 91 of the curb 9, and then the soundproof panel 8 was fixed. In the construction method for the soundproof wall 100, after fixing the soundproof panel 8 to the bent plate member 21, the bent plate member 31 that is in contact with the bent plate member 21 to which the soundproof panel 8 is fixed may be joined. That is, in the construction method for the soundproof wall 100, in the joining process, the bent plate member 21 of one soundproof wall support column 1 and the bent plate member 31 of the other soundproof wall support column 1 are joined to the side surface 91 of the curb 9, spaced laterally apart from each other. Then, in the fixing process, the soundproof panel 8 is fixed between the one soundproof wall support column 1 and the other soundproof wall support column 1, which are spaced laterally apart from each other. Then, after fixing the soundproofing panel 8 to the pair of soundproofing wall support posts 1, in the joining process, the bent plate member 31 may be brought into contact with the bent plate member 21 of one of the soundproofing wall support posts 1 to which the soundproofing panel 8 is fixed, and this bent plate member 31 may be joined to the side surface 91 of the curb 9.

[0041] <Second example of how to construct a soundproof wall 100> Next, a second example of a method for constructing a soundproof wall 100 using the soundproof wall support column 1 in this embodiment will be described. In the second example, the bent plate member 21 and the bent plate member 31 are joined together and then joined to the side surface 91 of the curb 9.

[0042] The construction method for the soundproof wall 100 includes a joining step of joining the first flanges 22 and 32 to the side surface 91 of the curb 9 using curb joining bolts 61a and 61b, and a fixing step of fixing the soundproof panel 8 to the soundproof wall support column 1.

[0043] In detail, first, during the joining process, the web 23 of the first bent plate member 21 and the web 33 of the second bent plate member 31, which are facing each other so as to be in contact, are joined together with joining bolts 51.

[0044] Subsequently, in the joining process, the first flange 22 of the first bent plate member 21 and the first flange 32 of the second bent plate member 31 are joined to the side surface 91 of the curb 9 using curb joining bolts 61a and 61b.

[0045] This allows the soundproof wall support posts 1 to be joined to the side surface 91 of the curb 9. The above joining process is repeated to join a pair of soundproof wall support posts 1, which are spaced apart laterally from each other, to the side surface 91 of the curb 9.

[0046] Subsequently, in the fixing process, the soundproofing panel 8 is fixed between the pair of soundproofing wall support columns 1, 1.

[0047] By repeatedly performing the above joining and fixing processes, a soundproof wall 100 can be constructed.

[0048] According to this embodiment, the soundproof wall support 1 and the soundproof wall support 21 are provided, which have a U-shaped bent plate member 21 in plan view, having a first flange 22 joined to the side surface 91 of the curb 9 by curb joining bolts 61, a web 23 formed by bending from the first flange 22, and a second flange 24 formed by bending from the web 23. As a result, when repeated loads are applied and force is transmitted between the soundproof wall support 1 and the curb 9, the force is mainly transmitted via the curb joining bolts 61 and the bent plate member 21 formed by bending. Since there are no welded parts in the member to which the load is mainly transmitted, the fatigue resistance of the joint portion of the soundproof wall support 1 joined to the side surface 91 of the curb 9 can be improved.

[0049] According to this embodiment, a pair of bent plate members 21 and 31 are provided, and the web 23 of the first bent plate member 21 and the web 33 of the second bent plate member 31 are joined by connecting bolts 51. As a result, when repeated loads are applied and force is transmitted between the sound barrier support 1 and the curb 9, that force is mainly transmitted via the connecting bolts 51. Since there are no welded parts in the members to which the load is mainly transmitted, the fatigue resistance of the joint portion of the sound barrier support 1 that is joined to the side surface 91 of the curb 9 can be improved.

[0050] In addition, this embodiment includes bent plate members 21 and 31 made by bending steel plates. This allows the bent plate members 2 to be easily manufactured on-site. Therefore, even if the anchor connecting bolts 61 embedded and fixed in the anchor 9 interfere with the reinforcing bars inside the anchor 9, it is possible to remanufacture bent plate members 21 and 31 with different hole positions for the anchor connecting bolts 61 or with different sizes on-site. Since the position of the anchor connecting bolts 61 can be easily changed, the soundproof wall support 1 can be flexibly attached to the existing anchor 9.

[0051] In addition, according to this embodiment, since the bent plate members 21 and 31 are formed in a U-shape in plan view, the rigidity of the bent plate members 21 and 31 can be increased compared to the case where they are L-shaped in plan view.

[0052] According to this embodiment, multiple anchor bolts 61a are arranged in a vertical line on the first flange 22, and multiple anchor bolts 61b are arranged in a vertical line on the first flange 32. As the first flanges 22 and 32 are strongly fixed to the anchor 9 by the anchor bolts 61a and 61b arranged in this way, the first flanges 22 and 32 become less prone to bending and are stronger against bending fatigue. In addition, since the anchor bolts 61a and 61b are each arranged in a vertical line, it becomes easier to attach the first flanges 22 and 32 parallel to the side surface 91. For this reason, axial force can be reliably introduced by the anchor bolts 61a and 61b.

[0053] According to this embodiment, the first flanges 22 and 32 have protrusions 26 and 36 that project laterally beyond the side ends 24a and 34a of the second flanges 24 and 34, and the curb connecting bolts 61a and 61b are arranged on the protrusions 26 and 36. As a result, the extension of the axes of the curb connecting bolts 61a and 61b is not obstructed by the second flanges 24 and 34, but remains open. That is, when the curb connecting bolts 61a and 61b are viewed from the direction normal to the side surface 91, they are exposed. Therefore, it becomes easier to install the curb connecting bolts 61a and 61b that connect the first flanges 22 and 32 to the side surface 91 of the curb 9.

[0054] According to this embodiment, the first flanges 22 and 32 have widened portions 221 and 321 and narrowed portions 222 and 322 formed above the widened portions 221 and 321, and the upper end 223 of the widened portion 221 and the upper end 323 of the widened portion 321 are positioned above the upper surface 92 of the curb 9. As a result, when a load in the direction normal to the side surface 91 of the curb 9 is applied, the force received from the corner between the side surface 91 and the upper surface 92 of the curb 9 can be borne by the widened portions 221 and 321. Therefore, the fatigue resistance of the joint portion of the soundproof wall support 1 joined to the side surface 91 of the curb 9 can be further improved.

[0055] According to this embodiment, in the joining process, the first flange 22 of the first bent plate member 21 is joined to the side surface 91 of the curb 9 by curb joining bolts 61a. Then, the web 33 of the second bent plate member 31 is placed opposite the web 23 of the first bent plate member 21, and the first flange 32 of the second bent plate member 31 is joined to the side surface 91 of the curb 9 by curb joining bolts 61b. Since the bent plate members 21 and 31 are joined separately to the side surface 91 of the curb 9, even if there are uneven surfaces such as steps on the side surface 91 of the curb 9, it becomes easier to attach the bent plate members 21 and 31 along the side surface 91.

[0056] According to this embodiment, in the joining process, the webs 23 of the first bent plate member 21 and the web 33 of the second bent plate member 31, which are opposite each other, are joined together. Then, the first flange 22 of the first bent plate member 21 and the first flange 32 of the second bent plate member 31 are joined to the side surface 91 of the curb 9 using curb joining bolts 61a and 61b. Since the bent plate members 21 and 31, which are joined together, are joined to the side surface 91 of the curb 9, the bent plate members 21 and 31 can be easily installed in a short amount of time when installed on site.

[0057] <Second Embodiment> Next, a second embodiment will be described. Detailed explanations of configurations similar to those described above will be omitted below.

[0058] As shown in Figure 6, a joint material 93 is provided between the adjacent curb 9-1 and curb 9-2. A step is created between the side surface 91 of curb 9-1 and the side surface 91 of curb 9-2.

[0059] The first flange 22 of the bent plate member 21 is positioned offset from the first flange 32 of the bent plate member 31 in the direction normal to the first flange 22.

[0060] The webs 23 and 33 are in contact with each other and are joined by joining bolts 51. Holes are formed in the webs 23 and 33 through which the joining bolts 51 pass. The holes through which the joining bolts 51 pass are formed as elongated holes that extend horizontally. As a result, when the webs 23 and 33 are joined by the joining bolts 51, the first flange 22 of the bent plate member 21 can be positioned offset from the first flange 32 of the bent plate member 31.

[0061] According to this embodiment, the first flange 22 of the bent plate member 21 is positioned offset from the first flange 32 of the bent plate member 31. This makes it easier to join the bent plate members 21 and 31 to the side surfaces 91, even if there is a step between the side surface 91 of the curb 9-1 and the side surface 91 of the curb 9-2.

[0062] <Third Embodiment> Next, a third embodiment will be described.

[0063] As shown in Figure 7, the soundproofing panel 8 may be fixed to the second flanges 24 and 34 via fixing brackets 82 consisting of bolts and nuts.

[0064] <Fourth Embodiment> Next, a fourth embodiment will be described.

[0065] As shown in Figures 8 and 9, the width of the first flanges 22 and 32 is formed uniformly in the height direction.

[0066] The second flange 24 has a narrowed portion 241 and a widened portion 242 formed above the narrowed portion 241. The upper end 243 of the narrowed portion 241 is positioned below the upper surface 92 of the curb 9. The narrowed portion 241 is formed to be narrower than the first flange 22. The widened portion 242 is formed to be the same width as the first flange 22. An inclined portion 25 is formed at the upper end 243 of the narrowed portion 241, which is connected to the widened portion 242. The inclined portion 25 reduces the weight of the second flange 24 of the bent plate member 21, improving the construction efficiency of the soundproof wall 100.

[0067] The second flange 34 has a narrowed portion 341 and a widened portion 342 formed above the narrowed portion 341. The upper end 343 of the narrowed portion 341 is positioned below the upper surface 92 of the curb 9. The narrowed portion 341 is formed to the same width as the first flange 32. The widened portion 342 is formed to be narrower than the first flange 32. An inclined portion 35 is formed at the upper end 343 of the narrowed portion 341, which is connected to the widened portion 342. The inclined portion 35 reduces the weight of the second flange 34 of the bent plate member 31, improving the construction efficiency of the soundproof wall 100.

[0068] The first flange 22 has a projection 26 that protrudes laterally beyond the side end 24a of the second flange 24. A hole 27 is formed in the projection 26 for passing the curb connecting bolt 61a through. This ensures that the extension of the axis of the curb connecting bolt 61a is not obstructed by the second flange 24. This makes it easier to install the curb connecting bolt 61a that connects the first flange 22 to the side surface 91 of the curb 9.

[0069] The first flange 32 has a projection 36 that protrudes laterally beyond the side end 34a of the second flange 34. A hole 37 is formed in the projection 36 for passing the curb connecting bolt 61b through. This ensures that the extension of the axis of the curb connecting bolt 61b is not obstructed by the second flange 34. This makes it easier to install the curb connecting bolt 61b that connects the first flange 32 to the side surface 91 of the curb 9.

[0070] According to this embodiment, the first flanges 22 and 32 have protrusions 26 and 36 that project laterally beyond the side ends 24a and 34a of the second flange, and the curb connecting bolts 61a and 61b are arranged on the protrusions 26 and 36. As a result, the extension of the axes of the curb connecting bolts 61a and 61b is not obstructed by the second flanges 24 and 34, leaving it open. That is, when the curb connecting bolts 61a and 61b are viewed from the direction normal to the side surface 91, they are exposed. Therefore, it becomes easier to install the curb connecting bolts 61a and 61b that connect the first flanges 22 and 32 to the side surface 91 of the curb 9.

[0071] According to this embodiment, the second flanges 24 and 34 have narrowed portions 241 and 341 and widened portions 242 and 342 formed above the narrowed portions 241 and 341, with the upper end 243 of the narrowed portion 241 and the upper end 343 of the narrowed portion 341 positioned below the upper surface 92 of the curb 9. In the cross section passing through the upper surface 92 of the curb 9, the widened portions 242 and 342 are formed on the second flanges 24 and 34. This increases the rigidity of the bent plate members 21 and 31 in the cross section passing through the upper surface 92 of the curb 9. Therefore, when a load perpendicular to the side surface 91 of the curb 9 is applied, the bent plate members 21 and 31 can more easily resist the force received from the corner between the side surface 91 and the upper surface 92 of the curb 9. As a result, the fatigue resistance of the joint portion of the soundproof wall support 1 joined to the side surface 91 of the curb 9 can be further improved.

[0072] <Fifth Embodiment> Next, a fifth embodiment will be described.

[0073] As shown in Figure 10, the bent plate members 21 and 31 are formed in an L-shape in plan view, and the second flanges 24 and 34 are omitted. The bent plate members 21 and 31 have first flanges 22 and 32 and webs 23 and 33.

[0074] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the present invention. Furthermore, these embodiments can be combined as appropriate. In addition, the present invention can be implemented in various novel forms other than those described above. Therefore, the above embodiments can be omitted, replaced, or modified in various ways without departing from the spirit of the invention. Such novel forms and modifications are included in the scope and spirit of this invention, as well as in the claims and equivalents of the claims. [Explanation of Symbols]

[0075] 1: Support posts for soundproof walls 2: Bent plate member 21: First bent plate member 22: First flange 221: Widening section 222: Reduced width part 223:Top edge 23: Web 24: Second flange 24a: Side end 241: Reduced width part 242: Widening section 243 :Top edge 25: Inclined part 26:Protrusion 27 :hole 31: Second bent plate member 32: First flange 321: Widening section 322: Reduced width part 323:Top edge 33: Web 34: Second flange 34a: Side end 341: Reduced width part 342: Widening section 343 :Top edge 35: Inclined part 36:Protrusion 37: Hole 51: Bolts for joining 61: Bolts for connecting to the ground cover 61a: Bolts for securing the ground cover 61b: Bolts for securing the ground cover 8: Soundproofing panels 81: Fixing hardware 82: Fixing hardware 9: Earth cover 91: Side view 92:Top surface 93: Joint material 100: Soundproof wall

Claims

1. A support column for a soundproof wall, to which a soundproof panel is fixed and joined to the side of a concrete curb, A first flange is joined to the side surface of the aforementioned curb by curb joining bolts, A web formed by bending from the first flange, The system comprises a bent plate member that is U-shaped in plan view, having a second flange formed by bending from the web. A support column for soundproof walls featuring the following characteristics.

2. A pair of the aforementioned bent plate members are provided, The web of the first bent plate member and the web of the second bent plate member are joined by joining bolts. A support column for a soundproof wall according to claim 1, characterized by the above.

3. The aforementioned anchor bolts are arranged in a single row vertically on the first flange. A support column for a soundproof wall according to claim 1, characterized by the above.

4. The first flange has a projection that protrudes laterally from the side end of the second flange, The bolts for connecting to the ground cover are arranged on the aforementioned protruding portion. A support column for a soundproof wall according to claim 1, characterized by the above.

5. The first flange has a widened portion and a narrowed portion formed above the widened portion. The upper end of the widened section is positioned above the upper surface of the curb. A support column for a soundproof wall according to claim 1, characterized by the above.

6. A method for constructing a soundproof wall using the soundproof wall support column described in claim 2, A joining step of joining the first flange to the side surface of the curb using the curb joining bolts, The process includes a fixing step of fixing the soundproof panel to the support column for the soundproof wall, In the aforementioned joining process, After joining the first flange of the first bent plate member to the side surface of the curb with the curb joining bolts, The web of the second bent plate member is placed opposite the web of the first bent plate member, and the first flange of the second bent plate member is joined to the side surface of the curb by the curb joining bolts. A method for constructing soundproof walls characterized by the following.

7. A method for constructing a soundproof wall using the soundproof wall support column described in claim 2, A joining step of joining the first flange to the side surface of the curb using the curb joining bolts, The process includes a fixing step of fixing the soundproof panel to the support column for the soundproof wall, In the aforementioned joining process, After joining the webs of the first and second bent plate members, which are facing each other, The first flange of the first bent plate member and the first flange of the second bent plate member are joined to the side surface of the curb using the curb joining bolts. A method for constructing soundproof walls characterized by the following.

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