Metal fittings for fixing to retaining walls, and a method for fixing bracket scaffolding to a concrete structure using the same, and a method for fixing a display to a concrete structure

Abstract

To provide a metal fitting for retaining wall fixation which can simply fix a bracket scaffold and a display object to various concrete skeletons at the time of retaining wall formation without requiring an accessory component such as a stopper or a spacer, and can be easily removed from the concrete skeleton without exposing an operator to risk, after moving or removal of the scaffold and the display object, and a method for fixing the bracket scaffold to the concrete skeleton and a method for fixing the display object to the concrete skeleton using the same.SOLUTION: A metal fitting for retaining wall fixation includes: a metal fitting body having a power point portion, a fulcrum portion and an action point portion in this order along a horizontal direction; and a slenderly extending bolt hole for fixing a support member on an end having the power point portion of the metal fitting body. The slenderly extending bolt hole is arranged in the metal fitting body so as to lower toward a direction of the fulcrum portion from above the power point portion.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a retaining wall fixing metal fitting, and a method of fixing a bracket scaffolding to a concrete structure using the same, and a method of fixing a display object to a concrete structure. [Background technology]

[0002] When constructing an embankment in the vertical direction against the ground surface, for example, the reinforced earth wall method is known as one type of retaining wall that retains the earth. The reinforced earth wall method is a construction method as shown in Figure 12, for example.

[0003] First, as shown in FIG. 12(a), a plurality of concrete bodies 912 are arranged on a leveled surface 902, which serves as a base, so as to be oriented in a vertical direction, for example. On the back side of the concrete body 912, the spreading, rolling and compacting of embankment material (soil and sand) and the arrangement of reinforcing materials 914, such as horizontally extending steel strips and planar geotextiles, are alternately repeated. Next, when the spreading, rolling and compacting of embankment material is performed up to the height of the concrete body 912, another concrete body 918 is arranged on the concrete body 912, and in the same manner as above, the spreading, rolling and compacting of embankment material and the arrangement of reinforcing materials 914 are alternately repeated on the back side of the concrete body 918. After that, a bracket scaffold 916 is attached to ensure the safety and workability of workers in the construction of the topmost stage (top end) of the concrete body 918 (FIG. 12(b)). Finally, a retaining wall 920 is formed with the embankment material laid over the entire slope 904 and the concrete body laid in a substantially vertical direction, and above that, for example, a cap concrete 922 is laid (FIG. 12(c)). To construct this cap concrete 922, a formwork is set up on the outside, and ready mixed concrete is poured in place, cured, and then the form is removed. Next, soil (embankment material) is spread up to the height of the constructed cap concrete 922, and it is rolled and compacted. If there is no other structure such as an overlying embankment, the embankment work is completed.

[0004] The bracket scaffolding was fixed to the concrete structure by threaded metal fittings such as cut bolts and eye bolts that were installed in advance. After the bracket scaffolding was moved and removed, the threaded metal fittings remained protruding from the outer surface of the concrete structure, which not only reduced the appearance of the retaining wall, but also contaminated the wall surface with rust water caused by corrosion. For this reason, workers were required to remove the threaded metal fittings after removing the scaffolding in order to maintain the appearance of the retaining wall.

[0005] However, the removal work is carried out without scaffolding, which is dangerous for the workers. Furthermore, it is not realistic to set up a separate bracket scaffold for removal. For example, it is possible to remove the material using a special vehicle such as an aerial work vehicle, but depending on the construction on a slope or the condition of the structures on top of the embankment, it is often not possible for an aerial work vehicle to approach. Furthermore, such removal requires a large amount of money. Therefore, it cannot be denied that removal is actually carried out by workers performing inappropriate and dangerous work.

[0006] On the other hand, on expressways and roads in mountainous areas, signs such as destination guide boards, road signs, and advertising billboards are often attached to the concrete framework that constitutes the above-mentioned retaining walls.

[0007] However, such markers must be easy to install and must be sufficiently fixed to withstand the elements. In addition, in recent years, it has become desirable to make them easy to remove and to keep the retaining wall as clean as possible while avoiding disadvantages such as damage to the wall during removal.

[0008] In response to this, Patent Document 1 discloses a retaining wall fixing metal fitting that can be inserted and fixed between adjacent concrete bodies that make up a retaining wall, allowing bracket scaffolding and display objects to be easily fixed. However, when the size of the concrete bodies varies, such retaining wall fixing metal fittings may result in unnecessary gaps being formed between the bracket scaffolding to which it is fixed and the retaining wall or concrete body. Such gaps may cause the bracket scaffolding to wobble, exposing workers to unnecessary danger. For this reason, plate-shaped bodies called stoppers or spacers are inserted into the gaps to prevent the bracket scaffolding from wobbling.

[0009] However, in order to fill various gaps, stoppers of various thicknesses and sizes are required in addition to the retaining wall fixing metal fittings, and preparing these is a burden for workers. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] International Publication No. 2021 / 020409 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention solves the above-mentioned problems, and its object is to provide a retaining wall fixing fitting which can easily fix bracket scaffolding and signs to various concrete structures when forming a retaining wall without the need for accessory parts such as stoppers or spacers, and which can be easily removed from the concrete structure after the scaffolding or signs are moved or removed without exposing workers to danger, as well as a method of fixing a bracket scaffolding to a concrete structure using the same and a method of fixing signs to a concrete structure using the same. [Means for solving the problem]

[0012] The present invention relates to a retaining wall fixing bracket. A metal fitting body including a force point portion, a fulcrum portion, and an action point portion in this order along the horizontal direction; and a bolt hole for fixing a support member to the end of the metal fitting body having the force point portion, the force point portion of the fixture body is engageable with the concrete structure disposed below in the horizontal direction, and is provided at a position approximately equal to or higher than the height of the fulcrum portion in the horizontal direction, The load point portion of the metal fitting body is engageable with the concrete structure disposed above in the horizontal direction and is provided at a position higher than the fulcrum portion in the horizontal direction; and This is a retaining wall fixing fitting, and the elongated bolt hole is arranged in the fitting body so as to extend from above the force point portion downward toward the fulcrum portion.

[0013] In one embodiment, the retaining wall fixing hardware of the present invention is used by being inserted into gaps between a plurality of concrete bodies arranged to form a retaining wall.

[0014] In one embodiment, a bolt is provided that penetrates and fixes the support member and the metal fitting body, and the bolt is slidable within the elongated bolt hole.

[0015] In one embodiment, the elongated bolt hole is arranged in the metal fitting body so as to extend in a substantially straight line downward from above the force point portion toward the fulcrum portion.

[0016] In one embodiment, the elongated bolt hole is arranged in the metal fitting body so as to descend in a stepped manner from above the force point portion toward the fulcrum portion.

[0017] In one embodiment, the elongated bolt hole is arranged in the metal fitting body so as to curve downward from above the force point portion toward the fulcrum portion.

[0018] In one embodiment, the load point portion of the metal fitting body includes an engagement portion that engages with the concrete structure arranged above in the horizontal direction.

[0019] In one embodiment, the force point portion of the metal fitting body is provided at a position higher than the fulcrum portion in the horizontal direction.

[0020] The present invention also provides a method for fixing a bracket scaffolding to a gap between a plurality of concrete bodies arranged for forming a retaining wall, the method comprising the steps of: a step of inserting the retaining wall fixing metal fitting into the gap of the concrete structure from the end of the load point portion of the metal fitting body so that the fulcrum portion of the metal fitting body is positioned downward; a step of rotating the retaining wall fixing metal fitting around the fulcrum portion to engage the force point portion with the concrete body arranged below in the horizontal direction and to engage the action point portion with the concrete body arranged above in the horizontal direction; passing a bolt through the elongated bolt hole of the retaining wall fastener and through a support member; a step of sliding the bolt through the elongated bolt hole until the support member contacts the concrete structure, thereby fixing the support member to the metal fitting body; and Securing a bracket scaffold to the support member; The method includes:

[0021] The present invention also provides a method for fixing a display object to a gap between a plurality of concrete bodies arranged to form a retaining wall, comprising the steps of: a step of inserting the retaining wall fixing metal fitting into the gap of the concrete structure from the end of the load point portion of the metal fitting body so that the fulcrum portion of the metal fitting body is positioned downward; a step of rotating the retaining wall fixing metal fitting around the fulcrum portion to engage the force point portion with the concrete body arranged below in the horizontal direction and to engage the action point portion with the concrete body arranged above in the horizontal direction; passing a bolt through the elongated bolt hole of the retaining wall fastener and through the indicia; and a step of sliding the bolt through the elongated bolt hole until the indicia contacts the concrete structure, thereby fixing the indicia to the metal fitting body; The method includes:

[0022] In one embodiment, the display is a sign or banner. Effect of the Invention

[0023] According to the present invention, a support member for mounting a bracket scaffold or a display can be easily fixed to a concrete structure without any gaps. Furthermore, the bracket scaffold or the display can be easily attached and detached to the support member. Furthermore, the metal fitting of the present invention itself can be easily attached and detached from the concrete structure. This eliminates the need to place accessories such as stoppers and spacers between the concrete structure and the support member, allowing the formation of a retaining wall with a good appearance and reducing the possibility of exposing workers to danger when forming the retaining wall. [Brief description of the drawings]

[0024] [Figure 1] FIG. 2 is a perspective view showing an example of the retaining wall fixing metal fitting of the present invention. [Diagram 2] 2 is a schematic diagram for explaining an example of a manner in which a support member is fixed to the retaining-wall fixing fitting shown in FIG. 1. FIG. [Diagram 3] FIG. 2 is a schematic diagram for explaining an example of a manner in which the retaining wall fixing metal fitting shown in FIG. 1 is fixed to a concrete skeleton. [Figure 4] 2 is a partially cutaway cross-sectional view illustrating the state in which the retaining wall fixing metal fitting shown in FIG. 1 is placed within a concrete skeleton. FIG. [Diagram 5] 2 is a partially cutaway cross-sectional view illustrating the state in which the retaining wall fixing fitting shown in FIG. 1 is placed within a concrete skeleton and a support member is temporarily fixed to the top of the elongated bolt hole with a hexagonal bolt. [Figure 6]This is a partially cutaway cross-sectional view to explain the state in which the retaining wall fixing bracket shown in Figure 1 is placed inside the concrete body and a hexagonal bolt is slid into the elongated bolt hole so that the support member is fixed in contact with the concrete body. [Figure 7] 2 is a schematic diagram for explaining the state in which the retaining-wall fixing metal fitting shown in FIG. 1 is placed within a concrete skeleton and a support member is fixed to the metal fitting. FIG. [Figure 8] 2 is a schematic diagram for explaining the state in which the retaining wall fixing metal fitting shown in FIG. 1 is placed within a concrete skeleton and a support member and a bracket scaffolding are fixed to the metal fitting. FIG. [Figure 9] These are figures to explain examples of the shapes of the elongated bolt holes provided in the retaining wall fixing hardware of the present invention, where (a) is a figure showing a state in which the bolt holes are arranged in the hardware body so as to descend in an approximately straight line, (b) is a figure showing a state in which the bolt holes are arranged in the hardware body so as to descend in a stepped manner, and (c) is a figure showing a state in which the bolt holes are arranged in the hardware body so as to descend in a curved manner. [Figure 10] FIG. 4 is a side view showing another example of the retaining wall fixing fitting of the present invention. [Figure 11] This is a diagram for explaining an example of the procedure for attaching a display object to the retaining wall fixing bracket shown in Figure 1, where (a) is a schematic diagram explaining the state in which the retaining wall fixing bracket of the present invention is arranged between the concrete structure that constitutes the retaining wall, and (b) is a schematic diagram explaining the state in which a traffic sign is attached to the retaining wall fixing bracket arranged in (a). [Figure 12] FIG. 1 is a schematic diagram illustrating a procedure for forming a retaining wall using a conventional reinforced earth wall construction method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The present invention will now be described with reference to the accompanying drawings, in which like reference numbers are used throughout the drawings to designate similar features as shown in the other drawings.

[0026] (Retaining wall fixing bracket) FIG. 1 is a perspective view of a retaining wall fastening bracket 100 of the present invention.

[0027] The retaining wall fixing metal fitting 100 of the present invention is composed of, for example, one metal fitting body 110. The metal fitting body 110 is preferably made of a hard material (for example, steel plate, stainless steel, aluminum, or other lightweight alloys). As described below, bracket scaffolding and signs (for example, traffic signs, signboards, banners) (hereinafter, these may be collectively referred to as "supported objects") are fixed through the fixing of support members, and in order to have sufficient strength to withstand the weight of multiple workers working on the structure, for example, a medium or thick steel plate (preferably a steel plate having a thickness of 3 mm or more, more preferably 6 mm or more, and even more preferably 9 mm or more) may be used.

[0028] The metal fitting body 110 is provided with a force point portion 112, a fulcrum portion 114, and an action point portion 116 in this order along the horizontal direction.

[0029] The force point portion 112 of the metal fitting body 110 is a portion where the load from the supported object attached to the support member 160 described later is directly applied to the concrete structure placed below. Here, in the retaining wall fixing metal fitting 100 shown in FIG. 1, the force point portion 112 of the metal fitting body 110 is provided at a position higher than the fulcrum portion 114 in the horizontal direction, but the present invention is not limited to such a configuration. For example, the force point portion may be provided at a position approximately the same height as the fulcrum portion in the metal fitting body. The force point portion 112 can engage with the concrete structure placed below in the horizontal direction. Specifically, in FIG. 1, a substantially flat bottom surface 118 is formed in a portion of the lower part of the metal fitting body 110 from the fulcrum portion 114 to the force point portion 112. The supported object attached to the support member 160 can be held in a predetermined position on the concrete structure by contacting and engaging all or a part of this bottom surface 118 with the upper surface of the concrete structure placed below.

[0030] The fulcrum portion 114 of the metal fitting body 110 allows the metal fitting 100 to be attached to and detached from gaps in a concrete structure by rotating the metal fitting body 110 (or the metal fitting 100 for fixing to a retaining wall) about the fulcrum portion 114. Although the fulcrum portion 114 is shown in Fig. 1 as having an obtuse angle, in the present invention, the fulcrum portion 114 is not necessarily limited to this shape. For example, the corner that constitutes this obtuse angle may be replaced by a chamfer (e.g., a C-surface finish or an R-surface finish).

[0031] 1, the load point portion 116 of the metal fitting body 110 is provided at a position higher in the horizontal direction than the fulcrum portion 114. By providing the load point portion 116 at such a position, when the load point portion 116 is inserted into a gap in a concrete body and an object to be supported is fixed to the support member 160 (i.e., the force point portion 112 side), the load point portion 116 can horizontally engage with the concrete body that is located above in the horizontal direction.

[0032] 1, the metal fitting body 110 has a somewhat wider shape, for example in the height direction, on the left side of the figure about the fulcrum part 114 (i.e., from the force point part 112 to the fulcrum part 114) in order to provide the metal fitting body 110 with sufficient rigidity, and on the right side of the figure about the fulcrum part 114 (i.e., from the fulcrum part 114 to the application point part 116) in order to prevent the side from the fulcrum part 114 to the application point part 116 from coming into contact with the concrete body arranged below when the force point part 112 side of the retaining wall fixing metal fitting 100 is lifted upward about the fulcrum part 114 in order to remove it from the concrete body, thereby preventing the removal of the retaining wall fixing metal fitting 100. These widths can be selected arbitrarily by those skilled in the art, taking into consideration the shape of the concrete body itself to be fixed and the strength of the metal fitting body 110, etc.

[0033] FIG. 2 is a schematic diagram for explaining an example of a manner in which a support member is fixed to the retaining-wall fixing metal fitting shown in FIG.

[0034] 2, an elongated bolt hole 128 is provided at the end of the bracket body 110 of the retaining wall fixing bracket 100, which has the force point portion 112. This bolt hole 128 is disposed in the bracket body 110 so as to extend downward from above the force point portion 112 toward the fulcrum portion 114, and a support member 160 is fixed to the bolt hole 128 by, for example, a hexagonal bolt 124 and a nut 126.

[0035] The support member 160 is preferably configured as a single square timber, square pipe, C-shaped timber, or L-shaped angle made of a hard material (e.g., steel plate, stainless steel, aluminum, or other lightweight alloy). The upper and lower ends of the support member 160 may be longer than the width in the height direction of the metal fitting body 110, and the lower end may be oriented, for example, in a substantially vertical direction. The support member 160 may also be provided with another screw hole 129 for attaching the supported object. Alternatively, the screw hole for attaching the supported object may be provided (not shown) in the vicinity of the force point portion 112 of the metal fitting body 110 (for example, around the elongated bolt hole 128) instead of or in addition to the above.

[0036] FIG. 3 is a schematic diagram for explaining an example of a manner in which the retaining wall fixing metal fitting shown in FIG. 1 is fixed to a concrete skeleton.

[0037] The retaining wall fixing metal fitting 100 of the present invention is inserted into the gap 890 between the concrete bodies 804, 806 that have been piled up to construct a retaining wall, starting from the application point portion 116. At this stage, no embankment material (soil and sand) has been spread onto the backside of the piled up concrete bodies 804, 806.

[0038] FIG. 4 is a partially cutaway cross-sectional view illustrating the state in which the retaining-wall fixing metal fitting shown in FIG. 1 is placed within a concrete skeleton.

[0039] 4, in the retaining-wall fixing metal fitting 100 of the present invention, all or part of bottom surface 118 extending substantially horizontally at force point portion 112 of the lower part of metal fitting body 110 contacts and engages with the upper surface of concrete structure 804. All or part of engagement surface 122 extending horizontally at force point portion 116 of metal fitting body 110 contacts and engages with bottom surface 812 of a lateral protrusion of concrete structure 806. In FIG. 4, a predetermined gap 119 is provided between the lower part of metal fitting body 110 and the upper surface of concrete structure 804.

[0040] In this state, the retaining wall fixing metal fitting 100 of the present invention cannot be moved in the vertical direction in FIG. 4 (particularly downward (white arrow 135)) and is firmly fixed in the gap between the concrete bodies 804, 806.

[0041] When removing the retaining wall fixing metal fitting 100 of the present invention from the state shown in Fig. 4, first remove the supported object, such as a fixed bracket scaffolding, from the retaining wall fixing metal fitting 100, and then, for example, by hooking a hook (not shown) from above into the elongated bolt hole 128 of the metal fitting body 110 and pulling it upward, the fulcrum part 114 is moved slightly downward using the gap 119, and the force point part 112 side is rotated upward around the fulcrum part 114, thereby releasing the engagement of the action point part 116 (i.e., the engagement between the engagement surface 122 and the bottom surface 812 of the lateral protrusion of the concrete body 806). In this state, the retaining wall fixing metal fitting 100 can be pulled out as is from the gap in the concrete body.

[0042] As shown in Fig. 5, for example, the support member 160 is lightly fixed (temporarily fixed) to the top of the elongated bolt hole 128 of the metal fitting body 110 using a hexagonal bolt 124 and a nut 126 without being completely tightened, but just enough to prevent it from falling off. In the state shown in Fig. 5, a predetermined gap t1 is formed between the support member 160 and the concrete bodies 804, 806. If the hexagonal bolt 124 and the nut 126 are tightly tightened in this state, the support member 160 is fixed to the retaining wall fixing metal fitting 100 in a state where it is separated from the concrete bodies 804, 806 by a length equivalent to the gap t1, so that if a bracket scaffolding is temporarily attached to the support member 160, it will become unstable, and there is a risk of exposing workers to danger.

[0043] Therefore, in the above-mentioned provisionally fixed state, the hexagonal bolt 124 and the nut 126 are slid in the elongated bolt hole 128 until the support member 160 is almost or completely in contact with the concrete skeletons 804, 806 (FIG. 6). As a result, the gap t2 between the support member 160 and the concrete skeletons 804, 806 is completely or almost completely lost, and the support member 160 is placed in a state supported by the concrete skeletons 804, 806. Thereafter, the hexagonal bolt 124 and the nut 126 are firmly tightened, so that the support member 160 is firmly fixed by the retaining wall fixing metal fitting 100 and the concrete skeletons 804, 806 (FIG. 7). In this state, when the bracket scaffolding 170 is attached to the support member 160 as shown in FIG. 8, rattling of the support member 160 is suppressed, and the worker standing on the bracket scaffolding can work on the retaining wall construction in a safer state.

[0044] Furthermore, referring back to FIG. 6, the support member 160 can be easily removed by loosening the hexagonal bolt 124 and the nut 126, and as described above, the retaining wall fixing bracket 100 itself can also be easily removed from the concrete bodies 804, 806.

[0045] FIG. 9 is a diagram illustrating an example of the shape of an elongated bolt hole provided in the metal fitting for fastening to a retaining wall of the present invention.

[0046] As shown in FIG. 9(a), the bolt hole 128 that can be provided in the retaining wall fixing metal fitting 100 may be arranged in the metal fitting body 110 so as to descend in a substantially straight line from above the force point portion 112 toward the fulcrum portion 114. In FIG. 9(a), the angle θ1 at which the bolt hole 128 can be provided is not necessarily limited, but is preferably 0° to 80°, more preferably 40° to 50°, based on the horizontal direction. If the angle θ1 is less than 30°, the hexagonal bolt that passes through the bolt hole 128 may not slide smoothly due to the weight of the support member when it comes into contact with the concrete structure after the support member is temporarily fixed to the bolt hole 128. If the angle θ1 is more than 60°, when the support member is temporarily fixed to the bolt hole 128, the support member may naturally slide without staying at the upper end of the bolt hole 128 due to its own weight, and the support member may inadvertently damage the concrete structure.

[0047] Furthermore, in the retaining wall fixing bracket 100 shown in Figure 9 (a), the length L1 of the bolt hole 128 is not necessarily limited, but can be set, for example, to a value larger than the bolt hole diameter used and within the range of 500 mm or less, such as within the range of 10 mm to 150 mm.

[0048] Alternatively, as shown in Figure 9(b), the retaining wall fixing hardware 100 of the present invention may be arranged in the hardware body 110 so that the elongated bolt hole 128' descends in a stepped manner (i.e., by combining a plurality of steps) from above the force point portion 112 toward the fulcrum portion 114. The embodiment shown in Figure 9(b) is useful in that even if a horizontal stress acts on a bolt (not shown) passing through the bolt hole 128', the bolt only moves horizontally for a certain distance and vertical movement is restricted during that time.

[0049] Alternatively, as shown in Figure 9(c) , the retaining wall fixing hardware 100 of the present invention may be arranged in the hardware body 110 so that the elongated bolt hole 128" curves down from above the force point portion 112 toward the fulcrum portion 114. The embodiment shown in Figure 9(c) is useful in that it can be expected to have the advantages of both Figures 9(a) and 9(b) above. Note that Figure 9(c) describes an example in which the bolt hole 128" curves down from above the force point portion 112 toward the fulcrum portion 114 in a curve similar to a concave parabola, but the curve is not necessarily limited to this form. The bolt hole provided in the hardware body 110 may have a form that curves down, for example, in a curve similar to a convex parabola.

[0050] Furthermore, although an example has been described in FIGS. 9(a) to (c) in which a single elongated bolt hole 128, 128', 128" is provided in a single metal fitting body 110, the present invention is not limited to this form. For example, a single metal fitting body may have a plurality of elongated bolt holes as illustrated in FIGS. 9(a) to (c) arranged side by side in the vertical and / or horizontal directions of the metal fitting body.

[0051] The concrete framework used in the reinforced earth wall method does not all have a uniform shape, but rather comes in a variety of shapes. Furthermore, the dimensional accuracy of the joints of each concrete framework is not completely controlled, and there may be variation between the concrete frameworks.

[0052] For this reason, the retaining wall fixing fittings of the present invention may not only have the form shown in Figure 1, but may also have a form different from that shown in Figure 1 so as to be compatible with concrete structures of various shapes.

[0053] FIG. 10 is a side view of another example of the metal fitting for fastening to a retaining wall of the present invention.

[0054] In the retaining-wall fixing hardware 200 shown in Figure 10, the width W of the protruding part near the application point 116 of the hardware body 210 is designed to be somewhat smaller than that shown in Figure 1. The retaining-wall fixing hardware 200 shown in Figure 10 is useful, for example, when the gap between concrete bodies is narrow and the space into which the protruding part of the retaining-wall fixing hardware can be inserted is limited.

[0055] Furthermore, a hook hole 229 is provided on the side of the bolt hole 128 of the metal fitting body 210 (the end side of the metal fitting body 210). The hook hole 229 is configured as a long and narrow hole extending in the vertical direction. When removing the retaining wall fitting 200 attached to a concrete body, the hook hole 229 can be hooked onto a hook lowered from above, making it even easier to remove the retaining wall fixing fitting 200 from the concrete body.

[0056] (Method of fixing a support object to a gap between multiple concrete structures) Using the retaining wall fixing metal fitting of the present invention, an object to be supported is fixed in the gaps between a plurality of concrete frameworks, for example, as follows.

[0057] First, the retaining wall fixing metal fitting is inserted into a gap in a concrete structure from the end of the application point of the metal fitting body so that the fulcrum of the metal fitting body is positioned downward. Next, the retaining wall fixing metal fitting is rotated, for example downward, around the fulcrum to engage the force point with the concrete structure positioned horizontally downward, and the application point with the concrete structure positioned horizontally upward.

[0058] Next, a bolt is passed through the elongated bolt hole of the retaining wall fixing bracket and the object to be supported. The bolt is then slid (i.e., slid down) through the elongated bolt hole until the object to be supported comes into contact with the concrete frame, and the object to be supported is fixed to the bracket body.

[0059] Specifically, in the case of fixing a display object such as a traffic sign as a supported object, as shown in Fig. 11(a), a plurality of retaining wall fixing brackets 100 are attached to the gaps between a plurality of concrete bodies 936 constituting a retaining wall 934. Then, a supported object such as a traffic sign 900 is fixed to each of the attached retaining wall fixing brackets 100 using, for example, bolts, strings, ropes, cable ties, etc. (Fig. 11(b)). Examples of supported objects that can be fixed in the present invention include support members for fixing bracket scaffolding; displays such as traffic signs, traffic signs, traffic banners, advertising billboards, and advertising banners; etc.

[0060] In addition, when fixing a bracket scaffolding, after the support member is fixed as described above, the bracket scaffolding is fixed to the support member by a method known to those skilled in the art.

[0061] In this way, the retaining wall fixing metal fittings of the present invention are useful at work sites where retaining walls are constructed using the reinforced earth wall construction method. In addition, after the retaining wall is constructed, it is also useful in that it can be used to temporarily or long-term display items bearing various information by utilizing the vast area of ​​the retaining wall.

[0062] Furthermore, according to the present invention, the use of special heavy machinery such as aerial work vehicles is eliminated when removing metal fittings from a retaining wall. This eliminates the need for special vehicles and qualified workers for the removal work, as well as the costs associated with such deployment, making the method simpler and safer than current removal methods and reducing the economic burden. [Explanation of symbols]

[0063] 100,200 Retaining wall fixing bracket 110,210 Metal fittings 112 Point of force 114 Fulcrum part 116 Point of action 118 Bottom 122 Engagement surface 124 Hexagonal bolt 126 Nut 128,128',128” bolt holes 129 screw hole 160 Support member 170 Bracket scaffolding 229 Hook hole 804,806,936 Concrete structure 934 Retaining wall

Claims

1. A retaining wall fixing bracket that is inserted into the gaps between multiple concrete bodies arranged to form a retaining wall. A metal fitting body including a force point portion, a fulcrum portion, and an action point portion in this order along the horizontal direction; and a bolt hole for fixing a support member to the end of the metal fitting body having the force point portion, the force point portion of the fixture body is engageable with the concrete structure disposed below in the horizontal direction, and is provided at a position approximately at the same height as the fulcrum portion or at a position higher than that in the horizontal direction, The load point portion of the metal fitting body is engageable with the concrete structure disposed above in the horizontal direction and is provided at a position higher than the fulcrum portion in the horizontal direction; and The retaining wall fixing fitting, wherein the elongated bolt hole is arranged in the fitting body so as to extend from above the force point portion downward toward the fulcrum portion.

2. 2. The retaining wall fixing hardware according to claim 1, which is used by being inserted into gaps between a plurality of concrete bodies arranged to form a retaining wall.

3. 3. A retaining wall fixing fixture as described in claim 1 or 2, further comprising a bolt that penetrates through and fixes the support member and the fixture body, the bolt being slidable within the elongated bolt hole.

4. A retaining wall fixing hardware as described in any one of claims 1 to 3, wherein the elongated bolt hole is arranged in the hardware body so as to descend in an approximately straight line from above the force point portion toward the fulcrum portion.

5. A retaining wall fixing hardware as described in any one of claims 1 to 3, wherein the elongated bolt holes are arranged in the hardware body so as to descend in a stepped manner from above the force point portion toward the fulcrum portion.

6. A retaining wall fixing hardware as described in any one of claims 1 to 3, wherein the elongated bolt hole is arranged in the hardware body so as to curve downward from above the force point portion toward the fulcrum portion.

7. A retaining wall fixing hardware according to any one of claims 1 to 6, wherein the load point portion of the hardware body has an engagement portion that engages with the concrete structure arranged above in the horizontal direction.

8. 8. A retaining wall fixing metal fitting according to claim 1, wherein the force point portion of the metal fitting body is provided at a position higher than the fulcrum portion in the horizontal direction.

9. A method for fixing a bracket scaffold to a gap between a plurality of concrete bodies arranged to form a retaining wall, comprising the steps of: a step of inserting the retaining wall fixing metal fitting according to any one of claims 1 to 8 into the gap of the concrete structure from the end of the load point portion of the metal fitting body so that the fulcrum portion of the metal fitting body is positioned downward; a step of rotating the retaining wall fixing metal fitting around the fulcrum portion to engage the force point portion with the concrete body arranged below in the horizontal direction and to engage the action point portion with the concrete body arranged above in the horizontal direction; passing a bolt through the elongated bolt hole of the retaining wall fastener and through a support member; a step of sliding the bolt through the elongated bolt hole until the support member contacts the concrete structure, thereby fixing the support member to the metal fitting body; and Securing a bracket scaffold to the support member; The method includes:

10. A method for fixing a display object to a gap between a plurality of concrete bodies arranged to form a retaining wall, comprising the steps of: a step of inserting the retaining wall fixing metal fitting according to any one of claims 1 to 8 into the gap of the concrete structure from the end of the load point portion of the metal fitting body so that the fulcrum portion of the metal fitting body is positioned downward; a step of rotating the retaining wall fixing metal fitting around the fulcrum portion to engage the force point portion with the concrete body arranged below in the horizontal direction and to engage the action point portion with the concrete body arranged above in the horizontal direction; passing a bolt through the elongated bolt hole of the retaining wall fastener and through the indicia; and a step of sliding the bolt through the elongated bolt hole until the indicia contacts the concrete structure, thereby fixing the indicia to the metal fitting body; The method includes:

11. The method of claim 10 , wherein the display is a sign or banner.

Images