Support post connecting fittings and sound barrier

Abstract

The present invention provides a support column connecting fitting that can improve the fatigue resistance of the joint portion of the support column that is joined to the side surface of the curb. [Solution] The post joining fitting 1 according to the embodiment is a post joining fitting 1 for joining a post 71 having a post web 72 and a post flange 71 to the side surface 91 of a concrete curb 9, and comprises a main plate member 2 which is joined to the post web 72 of the post 7 by post joining bolts 51. The main plate member 2 has a pair of mounting webs 23, 25 arranged on both sides of the post web 72, and a pair of mounting flanges 24, 26 which are joined to the side surface 91 of the curb 9 by curb joining bolts 61. The mounting flange 23 and the mounting web 24 are integrally molded by bending, and the mounting flange 25 and the mounting web 26 are integrally molded by bending.

Description

Technical Field

[0001] The present invention relates to a post joining fitting for joining a post having a post web and a post flange to a side surface of a concrete ground cover, and a sound insulation wall.

Background Art

[0002] Conventionally, in order to reduce noise on roads, railways, etc., H-section steel posts are erected at predetermined intervals along the extending direction of roads, railways, etc., and sound insulation walls are installed in which sound insulation panels with built-in sound absorbing materials such as glass wool are fixed between the respective posts. The posts to which the sound insulation panels are fixed may be joined to ground covers provided on both sides of roads, railways, etc. As techniques for joining the 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, the member including the post is fixed to a railing by anchor bolts or the like. A mounting plate is joined to the post, and the anchor bolts are provided on this mounting plate. The mounting plate for providing the anchor bolts is normally joined to the post by welding.

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

[0005] Sound insulation walls for roads and railways are appropriately renewed over time, but since renewal requires time and cost, it is required to extend the service life of post members in order to reduce the renewal frequency itself. In addition, when newly installing 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 joint fitting and a soundproof wall that can improve the fatigue resistance of the joint portion of a support column joined to the side surface of a curb. [Means for solving the problem]

[0009] The post joining fitting according to the present invention is a post joining fitting for joining a post having a post web and a post flange to the side surface of a concrete curb, comprising a main plate member joined to the post by post joining bolts, the main plate member having a pair of mounting webs arranged on both sides of the post web and a pair of mounting flanges joined to the side surface of the curb by curb joining bolts, and characterized in that the mounting webs and mounting flanges are integrally molded. [Effects of the Invention]

[0010] According to the present invention, a main plate member is provided which is joined to the support column by bolts for joining the support column. The main plate member has a pair of mounting webs arranged on both sides of the support column web and a pair of mounting flanges which are joined to the side surface of the curb by bolts for joining the curb, and the mounting webs and mounting flanges are integrally molded. As a result, when repeated loads are applied and force is transmitted between the support column and the curb, the force is mainly transmitted through the integrally molded mounting webs and mounting flanges. 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 support column that is joined to the side surface of the curb can be improved. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view showing a soundproof wall using a support column connecting fitting according to the first embodiment. [Figure 2] Figure 2 is a perspective view showing the support column connecting fitting and support column disassembled according to the first embodiment. [Figure 3] Figure 3 is a plan view showing the joint between the curb and the support column, which is joined by the support column joining fitting according to the first embodiment. [Figure 4] Figure 4 is a front view showing the joint between the base plate and the support column, which is joined by the support column joining fitting according to the first embodiment. [Figure 5] Figure 5 is a side view showing the joint between the curb and the support column, which is joined by the support column joining fitting according to the first embodiment. [Figure 6] Figure 6 is a plan view showing the joint between the curb and the support column, which is joined by the support column joining fitting according to the second embodiment. [Figure 7] Figure 7 is a plan view showing the joint between the base plate and the support column, which is joined by the support column joining fitting according to the third embodiment. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of this invention will be described with reference to the drawings.

[0013] (First Embodiment) As shown in Figure 1, the sound insulation wall 100 is provided on the concrete ground cover 9. The sound insulation wall 100 includes a support post 7 joined to the side surface 91 of the ground cover 9 by a support post joint fitting 1, and a sound insulation panel 8 fixed to the support post 7.

[0014] The sound insulation panel 8 is, for example, internally provided with a sound absorbing material, and exhibits predetermined sound insulation performance. Both ends of the sound insulation panel 8 in the left-right direction are respectively fixed to the support posts 7 via well-known fixing fittings or bolts. A plurality of the sound insulation panels 8 are provided in the vertical direction between the pair of support posts 7, 7.

[0015] The support post 7 is made of H-section steel and extends in the vertical direction. The upper end of the support post 7 is arranged above the upper surface 92 of the ground cover 9. The support post joint fitting 1 is provided on the lower end side of the support post 7.

[0016] As shown in Figure 2 and Figure 3, the support post 7 has a pair of support post flanges 71, 73, and a support post web 72 connecting the pair of support post flanges 71, 73. Note that the support post 7 may be made of T-section steel having a T-shaped cross section with the support post flange 73 omitted.

[0017] The support post joint fitting 1 includes a main body plate member 2 joined to the support post web 72 of the support post 7 by a support post joining bolt 51. The main body plate member 2 is configured by bending a steel plate, for example. The support post joint fitting 1 may include the main body plate member 2 and a gap plate member 4. Note that the main body plate member 2 may be extrusion-molded or molded by casting.

[0018] The main body plate member 2 has a first L-shaped member 21, and a second L-shaped member 22 that is a separate body from the first L-shaped member 21.

[0019] The first L-shaped member 21 is formed in an L shape in plan view, and has a mounting web 23 and a mounting flange 24 that stands perpendicularly to the mounting web 23. The mounting web 23 and the mounting flange 24 are integrally molded by bending. Note that the mounting web 23 and the mounting flange 24 may be integrally molded by extrusion molding. Note that the mounting web 23 and the mounting flange 24 may be integrally molded by casting.

[0020] The second L-shaped member 22 is formed in an L-shape in plan view, and includes a mounting web 25 and a mounting flange 26 that stands perpendicularly to the mounting web 25. The mounting web 25 and the mounting flange 26 are integrally molded by bending. Note that the mounting web 25 and the mounting flange 26 may be integrally molded by extrusion molding. Note that the mounting web 25 and the mounting flange 26 may be integrally molded by casting.

[0021] A plurality of holes through which the post joining bolts 51 pass are formed in the mounting webs 23 and 25 in the vertical direction.

[0022] As shown in Figure 4, a plurality of holes through which the curb joining bolts 61 (61a, 61b) pass are formed in the mounting flanges 24 and 26 in the vertical direction. The holes through which the curb joining bolts 61 pass are horizontally extending long holes. Thereby, the positions of the curb joining bolts 61 can be adjusted. Anchor bolts or the like are used as the curb joining bolts 61, and the tips thereof are embedded in the curb 9.

[0023] A plurality of the curb joining bolts 61a are arranged on the mounting flange 24 in the height direction. The curb joining bolts 61a are arranged in a single row on the mounting flange 24 along the vertical direction. This makes it easy to mount the mounting flange 24 parallel to the side surface 91.

[0024] A plurality of the curb joining bolts 61b are arranged on the mounting flange 26 in the height direction. The curb joining bolts 61b are arranged in a single row on the mounting flange 26 along the vertical direction. This makes it easy to mount the mounting flange 26 parallel to the side surface 91.

[0025] The upper ends of the mounting flanges 24 and 26 are arranged to protrude upward beyond the upper surface 92 of the curb 9.

[0026] The mounting flanges 24 and 26 have inclined portions 27 and 28 formed by notching their upper ends. The inclined portions 27 and 28 reduce the weight of the mounting flanges 24 and 26 of the main body plate member 2, and improve construction efficiency.

[0027] As shown in Figures 2 and 3, the main plate member 2 is welded to a reinforcing rib 31 that connects the mounting web 23 and the mounting flange 24. Similarly, as shown in Figures 2, 3 and 5, the main plate member 2 is welded to a reinforcing rib 31 that connects the mounting web 25 and the mounting flange 26.

[0028] The presence of reinforcing ribs 31 increases the rigidity of the main plate member 2. Therefore, the thickness of the mounting webs 23, 25 and mounting flanges 24, 26 can be reduced compared to the case without reinforcing ribs 31. The reinforcing ribs 31 are made of steel plate and are arranged in multiples in the vertical direction. Note that in this invention, the reinforcing ribs 31 can be omitted.

[0029] One mounting web 23 and the other mounting web 25 are joined to the column web 72 by column joining bolts 51. For example, high-strength bolts are used for the column joining bolts 51. Nuts are screwed onto the column joining bolts 51.

[0030] The gap plate member 4 is made of steel plate and has holes through which the anchor bolts 61 pass. The holes in the gap plate member 4 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. The gap plate member 4 may also be made of resin plate material.

[0031] The gap plate member 4 is inserted between the mounting flange 24 and the side surface 91 of the curb 9, and between the mounting flange 26 and the side surface 91 of the curb 9. The gap plate member 4 adjusts for unevenness that occurs on the side surface 91 of the curb 9.

[0032] The thickness of the gap plate member 4 is greater than the thickness of the support flange 71. However, in this invention, the thickness of the gap plate member 4 may be the same as the thickness of the support flange 71. In other words, in this invention, the thickness of the gap plate member 4 only needs to be greater than or equal to the thickness of the support flange 71.

[0033] Multiple gap plate members 4 may be provided between the mounting flanges 24, 26 and the side surface 91 of the curb 9. The thickness and number of gap plate members 4 can be adjusted according to the size of the gap formed between the mounting flanges 24, 26 and the side surface 91 of the curb 9. This makes it easier to attach the support flange 71 parallel to the side surface 91.

[0034] According to this embodiment, the support column 7 is joined to a main plate member 2 by a support column joining bolt 51. The main plate member 2 has a pair of mounting webs 23 and 25 arranged on both sides of the support column web 72, and a pair of mounting flanges 24 and 26 joined to the side surface 91 of the curb 9 by a curb joining bolt 61. The mounting webs 23 and 25 and the mounting flanges 24 and 26 are integrally formed by bending. As a result, when repeated loads are applied and force is transmitted between the support column 7 and the curb 9, the force is mainly transmitted through the mounting webs 23 and mounting flanges 24 which are integrally formed by bending. Similarly, the force is mainly transmitted through the mounting webs 25 and mounting flanges 26 which are integrally formed by bending. 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 support column 7 joined to the side surface 91 of the curb 9 can be improved.

[0035] In addition, this embodiment includes a main plate member 2 made by bending a steel plate. This allows the main plate member 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 a main plate member 2 with a different position of the hole through which the anchor connecting bolts 61 pass, or a main plate member 2 of a different size, on-site. Since the position of the anchor connecting bolts 61 can be easily changed, the support column 7 can be flexibly attached to the existing anchor 9 using the support column connecting fitting 1.

[0036] According to this embodiment, multiple anchor bolts 61a are arranged in a vertical line on one mounting flange 24, and multiple anchor bolts 61b are arranged in a vertical line on the other mounting flange 26. As an example, the anchor bolts 61a and 61b arranged in this way strongly fix the mounting flanges 24 and 26 to the anchor 9, making the mounting flanges 24 and 26 less likely to bend and 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 mounting flanges 24 and 26 parallel to the side surface 91. Therefore, axial force can be reliably introduced by the anchor bolts 61a and 61b.

[0037] According to this embodiment, the bolt 51 for connecting the support column is a high-strength bolt. This makes it highly resistant to loosening and allows for numerical control using torque and rotation angle.

[0038] According to this embodiment, a gap plate member 4 is provided to be inserted between the mounting flanges 24 and 26 and the side surface 91 of the curb 9, and the thickness of the gap plate member 4 is greater than or equal to the thickness of the support flange 71. This makes it easier to mount the mounting flanges 24 and 26 parallel to the side surface 91 even if unevenness occurs on the side surface 91. In addition, deformation of the mounting flanges 24 and 26 caused by the corners of the left and right ends of the support flange 71 contacting the mounting flanges 24 and 26 can be suppressed. For these reasons, the axial force of the curb connecting bolts 61 provided on the mounting flanges 24 and 26 can be more reliably introduced. As a result, even when repeated loads are applied, the gap between the mounting flanges 24 and 26 and the gap plate member 4 does not open, and fatigue failure of the curb connecting bolts 61 can be suppressed.

[0039] According to this embodiment, the main plate member 2 has a first L-shaped member 21 in which one mounting web 23 and one mounting flange 24 are integrally formed by bending, and a second L-shaped member 22 in which the other mounting web 25 and the other mounting flange 26 are integrally formed by bending. The one mounting web 23 and the other mounting web 25 are joined to the support web 72 by support joint bolts 51. This makes the support web 72 less susceptible to deformation when bent. In addition, since the mounting webs 23 and 25 fit within the width of the support flange 73, the main plate member 2 can be made smaller.

[0040] According to this embodiment, one mounting web 23 and the other mounting web 25 are joined to the support web 72 by a support bolt 51. This allows the head of the support bolt 51 and the nut screwed onto the support bolt 51 to be visually inspected. Therefore, the head of the support bolt 51 and the nut screwed onto the support bolt 51 can be inspected for loosening, corrosion, etc. In addition, since they are joined by the support bolt 51, the main plate member 2 can be replaced by loosening the support bolt 51. If a construction defect occurs in the curb 9, it is possible to address the issue by replacing only the main plate member 2.

[0041] According to this embodiment, the upper ends of the mounting flanges 24 and 26 are positioned above the upper surface 92 of the curb 9. This allows the mounting flanges 24 and 26 to also bear the force that the support column 7 receives from the corner between the side surface 91 and the upper surface 92 of the curb 9 when a load in the direction normal to the side surface 91 of the curb 9 acts on the support column 7. Therefore, the fatigue resistance of the joint portion of the support column 7 joined to the side surface 91 of the curb 9 can be further improved.

[0042] According to this embodiment, the soundproof wall 100 comprises a support column 7 joined to the side surface 91 of the curb 9 by a support column joining fitting 1, and a soundproof panel 8 fixed to the support column 7. This makes it possible to construct a soundproof wall 100 that can improve the fatigue resistance of the joint portion of the support column 7 joined to the side surface 91 of the curb 9.

[0043] According to this embodiment, the main plate member 2 is welded and fixed with reinforcing ribs 31 that connect the mounting webs 23, 25 and the mounting flanges 24, 26. This increases the rigidity of the main plate member 2. As a result, the thickness of the mounting webs 23, 25 and the mounting flanges 24, 26 can be reduced.

[0044] <Second Embodiment> Next, a second embodiment will be described. Detailed explanations of configurations similar to those described above will be omitted below.

[0045] 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.

[0046] In the support column joint fitting 1, a gap plate member 4 is inserted between the mounting flange 24 and the side surface 91 of the curb 9-1. In the support column joint fitting 1, a gap plate member 4(43) is inserted between the mounting flange 26 and the side surface 91 of the curb 9-2. The thickness of the gap plate members 4(41, 42) and the thickness of the gap plate member 4(43) are different.

[0047] Multiple gap plate members 4 are provided, which are inserted between the mounting flange 24 and the side surface 91 of the curb 9-1. These gap plate members include a first gap plate member 41 and a second gap plate member 42. The first gap plate member 41 and the second gap plate member 42 have different thicknesses. However, the first gap plate member 41 and the second gap plate member 42 may have the same thickness.

[0048] Multiple gap plate members 4 are provided, which are inserted between the mounting flange 26 and the side surface 91 of the curb 9-2, and each member has a third gap plate member 43.

[0049] According to this embodiment, in the support column joint fitting 1, the thickness of the gap plate member 4 (41, 42) inserted between the mounting flange 24 and the side surface 91 of the curb 9-1 is different from the thickness of the gap plate member 4 (43) inserted between the mounting flange 26 and the side surface 91 of the curb 9-2. This makes it easier to attach the support column flange 71 parallel to the side surface 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.

[0050] <Third Embodiment> Next, a third embodiment will be described.

[0051] As shown in Figure 7, the main plate member 2 is integrally formed by bending a single steel plate. In the support column connecting fitting 1, the main plate member 2 further has a connecting flange 29 that is integrally formed by bending one mounting web 23 and the other mounting web 25. The connecting flange 29 is joined to the support column flange 73 by a support column connecting bolt 51.

[0052] According to this embodiment, the support column 7 is joined to a main plate member 2 by a support column joining bolt 51. The main plate member 2 has a pair of mounting webs 23 and 25 arranged on both sides of the support column web 72, and a pair of mounting flanges 24 and 26 joined to the side surface 91 of the curb 9 by a curb joining bolt 61. The mounting webs 23 and 25 and the mounting flanges 24 and 26 are integrally formed by bending. As a result, when repeated loads are applied and force is transmitted between the support column 7 and the curb 9, the force is mainly transmitted through the mounting webs 23 and mounting flanges 24 which are integrally formed by bending. Similarly, the force is mainly transmitted through the mounting webs 25 and mounting flanges 26 which are integrally formed by bending. 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 support column 7 joined to the side surface 91 of the curb 9 can be improved.

[0053] According to this embodiment, the main plate member 2 further has a connecting flange 29 that is integrally formed by bending one mounting web 23 and the other mounting web 25, and the connecting flange 29 is joined to the support column flange 73 by a support column joining bolt 51. As a result, when repeated loads are applied and force is transmitted between the support column 7 and the curb 9, the force is mainly transmitted through the connecting flange 29, mounting webs 23 and 25, and mounting flanges 24 and 26, which are integrally formed by bending. 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 support column 7 that is joined to the side surface 91 of the curb 9 can be improved.

[0054] While embodiments of these inventions have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Furthermore, these embodiments can be combined as appropriate. Moreover, these inventions can be implemented in various novel forms in addition to the embodiments described above. Therefore, the above embodiments can be omitted, replaced, or modified in various ways without departing from the spirit of these inventions. 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]

[0055] 1: Support post connecting fitting 2: Main body plate component 21: First L-shaped member 22: 2nd L-shaped member 23: Installation Web 24: Mounting flange 25: Installation Web 26: Mounting flange 27: Inclined part 28: Inclined part 29: Connecting flange 31: Reinforcement Ribs 4: Gap plate member 41: First gap plate member 42: Second gap plate member 43: Third gap plate member 51: Bolt for connecting support posts 61: Bolts for connecting to the ground cover 61a: Bolts for securing the ground cover 61b: Bolts for securing the ground cover 7: Strut 71: Support flange 72: Support web 73: Support flange 8: Soundproofing panels 9: Earth cover 91: Side view 92:Top surface 93: Joint material 100: Soundproof wall

Claims

1. A support post connecting fitting for joining a support post having a support post web and a support post flange to the side surface of a concrete curb, The main plate member is attached to the aforementioned support column by a bolt for connecting the support column, The main plate member is, A pair of mounting webs are arranged on both sides of the aforementioned support web, The curb has a pair of mounting flanges that are joined to the side surface of the curb by curb joining bolts, The mounting web and the mounting flange are integrally molded. A support post connecting fitting characterized by the following.

2. The aforementioned bolts for connecting to the ground curb are, Multiple units are arranged in a single row vertically on one of the mounting flanges. Multiple units are arranged in a single line vertically on the other mounting flange. A support post connecting fitting according to claim 1, characterized by the above.

3. The bolts used to connect the support columns are high-strength bolts. A support post connecting fitting according to claim 1, characterized by the above.

4. The mounting flange and the side surface of the curb are provided with a gap plate member, The thickness of the gap plate member is equal to or greater than the thickness of the support flange. A support post connecting fitting according to claim 1, characterized by the above.

5. The main plate member is, A first L-shaped member in which one mounting web and one mounting flange are integrally molded by bending, The other mounting web and the other mounting flange are integrally formed by bending a second L-shaped member, One mounting web and the other mounting web are joined to the support web by the support connecting bolts. A support post connecting fitting according to claim 1, characterized by the above.

6. The main plate member is, It further comprises a connecting flange which is integrally formed by bending one mounting web and the other mounting web, The connecting flange is joined to the column flange by the column joining bolts. A support post connecting fitting according to claim 1, characterized by the above.

7. The upper surface of the mounting flange is positioned above the upper surface of the curb. A support post connecting fitting according to claim 1, characterized by the above.

8. The support column is joined to the side surface of the curb by the support column joining fitting described in claim 1, The system includes a soundproof panel fixed to the aforementioned support column. A soundproof wall characterized by the following features.

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