WO2021020409A1 - Matériel de fixation d'une paroi de retenue, procédé de fixation d'échafaudage de support à une ossature en béton en utilisant ledit matériel, et procédé de fixation d'un objet d'affichage sur une ossature en béton - Google Patents

Matériel de fixation d'une paroi de retenue, procédé de fixation d'échafaudage de support à une ossature en béton en utilisant ledit matériel, et procédé de fixation d'un objet d'affichage sur une ossature en béton Download PDF

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Publication number
WO2021020409A1
WO2021020409A1 PCT/JP2020/028949 JP2020028949W WO2021020409A1 WO 2021020409 A1 WO2021020409 A1 WO 2021020409A1 JP 2020028949 W JP2020028949 W JP 2020028949W WO 2021020409 A1 WO2021020409 A1 WO 2021020409A1
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WO
WIPO (PCT)
Prior art keywords
metal fitting
retaining wall
concrete skeleton
wall fixing
horizontal direction
Prior art date
Application number
PCT/JP2020/028949
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English (en)
Japanese (ja)
Inventor
柴田　篤志
孝計 米谷
容平 西川
Original Assignee
三共スチール株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三共スチール株式会社 filed Critical 三共スチール株式会社
Priority to JP2021535368A priority Critical patent/JP7171979B2/ja
Publication of WO2021020409A1 publication Critical patent/WO2021020409A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions

Definitions

  • the present invention relates to a retaining wall fixing metal fitting, a method of fixing a bracket scaffold to a concrete skeleton using the same, and a method of fixing a display object to the concrete skeleton.
  • Reinforced soil wall construction method is known as one of the retaining walls for retaining soil when, for example, embankment is created in the vertical direction with respect to the ground surface.
  • the reinforced soil wall method is, for example, a method as shown in FIG.
  • a plurality of concrete skeletons 912 are arranged, for example, in the vertical direction with respect to the foundation leveling ground 902. .
  • the embankment material (earth and sand) is sprinkled, compacted and compacted, and the arrangement of the reinforcing material 914 such as the steel strip extending in the horizontal direction and the planar geotextile is alternately repeated.
  • a retaining wall 920 in which the embankment material is arranged on the entire slope 904 and the concrete skeleton is arranged in a substantially vertical direction is formed, and for example, a cap concrete 922 is arranged above ((c) in FIG. 17).
  • a formwork is installed on the outside, and on-site cast concrete is cast, cured, and demolded.
  • earth and sand embankment material
  • the bracket scaffolding is fixed to the concrete skeleton, for example, through screwing metal fittings such as threaded rods and eye bolts installed in advance, so that the screwing metal fittings 924 protrude between the concrete skeleton 912 as shown in FIG. Is placed.
  • these screw-in brackets 924 remain protruding to the outer surface of the concrete skeleton, degrading the appearance of the retaining wall 934.
  • the screw-in metal fitting 924 may be corroded by wind and rain for many years and contaminate the holding wall surface with rust water or the like. Therefore, in order to maintain the appearance of the retaining wall 934, the operator must remove the screw metal fitting 924 with the scaffolding removed.
  • display objects such as destination information boards, road signs, and advertising signs may be attached to the concrete skeleton that constitutes the retaining wall as described above.
  • the present invention solves the above problems.
  • the purpose is to easily fix the bracket scaffolding and display to the concrete skeleton when forming the retaining wall, and to endanger the operator after moving or removing the scaffolding and display. It is an object of the present invention to provide a retaining wall fixing bracket and a method for fixing a bracket scaffold to the concrete skeleton and a method for fixing a display object to the concrete skeleton, which can be easily removed from the concrete skeleton without any need.
  • the present invention is a retaining wall fixing metal fitting inserted into a gap between a plurality of concrete skeletons arranged for forming a retaining wall, and includes a force point portion, a fulcrum portion, and an action point portion in this order along the horizontal direction. It is provided with a metal fitting body and a support member fixed to the end portion of the metal fitting body having the fulcrum portion and extending along the vertical direction of the metal fitting body.
  • the point of effort portion of the metal fitting body is engageable with the concrete skeleton arranged below the horizontal direction, and is at or below a position substantially the same height as the fulcrum portion in the horizontal direction.
  • the point of action portion in the metal fitting body is engageable with the concrete skeleton arranged above the horizontal direction, and is higher than the fulcrum portion in the horizontal direction. It is a metal fitting for fixing the retaining wall, which is provided at a high position.
  • the force point portion in the metal fitting body is provided at a position substantially the same height as the fulcrum portion in the horizontal direction.
  • the point of action portion of the metal fitting body includes an engaging portion that engages with the concrete skeleton arranged above in the vertical direction.
  • the end portion of the engaging portion includes a receiving portion for accommodating a connecting bar arranged over the plurality of concrete skeletons.
  • the force point portion in the metal fitting body is provided at a position higher than the fulcrum portion in the horizontal direction.
  • the point of action portion of the metal fitting body includes an engaging portion that engages the concrete skeleton arranged above in the horizontal direction.
  • the present invention is also a method for fixing a bracket scaffold in a gap between a plurality of concrete skeletons arranged for retaining wall formation.
  • the force point portion is engaged with the concrete skeleton arranged downward in the horizontal direction, and the action point portion is engaged with the concrete skeleton.
  • a step of engaging with the concrete skeleton arranged above in the horizontal direction, and a step of fixing the bracket scaffolding to the support member of the retaining wall fixing bracket. Is a method that includes.
  • the present invention is also a method for fixing an object in a gap between a plurality of concrete skeletons arranged for forming a retaining wall.
  • the force point portion is engaged with the concrete skeleton arranged downward in the horizontal direction, and the action point portion is engaged with the concrete skeleton.
  • a step of engaging with the concrete skeleton arranged above in the horizontal direction, and a step of fixing the display object to the support member of the retaining wall fixing bracket. Is a method that includes.
  • the display is a sign or banner.
  • bracket scaffolding and display objects can be easily attached to and removed from the concrete skeleton. Further, the metal fitting itself of the present invention can be easily attached to and detached from the concrete skeleton. As a result, a retaining wall having a good appearance can be formed, and the possibility of endangering the operator in forming the retaining wall can be reduced.
  • FIG. 1 It is a perspective view of the metal fitting which shows an example of the metal fitting for fixing a retaining wall of this invention.
  • FIG. 1 It is a schematic diagram for demonstrating an example of the style of fixing the retaining wall fixing metal fitting shown in FIG. 1 to a concrete skeleton.
  • FIG. 2 It is a partial cut-out sectional view for demonstrating the state in which the retaining wall fixing metal fitting shown in FIG. 2 is arranged in a concrete skeleton.
  • FIG. 2 shows another example of the retaining wall fixing metal fitting of this invention, and is the schematic cross-sectional view for demonstrating the state which the metal fitting is arranged in the concrete skeleton.
  • FIG. 1 It is a schematic diagram for demonstrating an example of the style of fixing the retaining wall fixing metal fitting shown in FIG. 1 to a concrete skeleton.
  • FIG. 2 It is a partial cut-out sectional view for demonstrating the state in which the retaining wall fixing metal fitting shown in FIG. 2 is arranged in a concrete skeleton.
  • FIG. 4 It is a figure seen from the back side of the concrete skeleton when the retaining wall fixing metal fitting shown in FIG. 4 is attached to the concrete skeleton. It is a perspective view of the metal fitting which shows still another example of the retaining wall fixing metal fitting of this invention. It is a perspective view of the metal fitting which shows still another example of the retaining wall fixing metal fitting of this invention. It is an exploded perspective view of the metal fitting which shows still another example of the retaining wall fixing metal fitting of this invention. It is a schematic diagram for demonstrating the style of fixing the retaining wall fixing metal fitting shown in FIG. 9 to a concrete skeleton. It is a partial cut-out sectional view for demonstrating the state in which the retaining wall fixing metal fitting shown in FIG.
  • FIG. 12 It is a perspective view of the metal fitting which shows still another example of the retaining wall fixing metal fitting of this invention. It is a schematic diagram for demonstrating the style of fixing the retaining wall fixing metal fitting shown in FIG. 12 to a concrete skeleton. It is a perspective view of the metal fitting which shows still another example of the retaining wall fixing metal fitting of this invention. It is a schematic diagram for demonstrating the style of fixing the retaining wall fixing metal fitting shown in FIG. 14 to a concrete skeleton. It is a figure for demonstrating an example of the procedure of attaching a display object to the retaining wall fixing metal fitting of this invention, (a) arranges the retaining wall fixing metal fitting of this invention between concrete skeletons constituting a retaining wall.
  • FIG. 1 is a perspective view of the retaining wall fixing metal fitting 100 of the present invention.
  • the retaining wall fixing metal fitting 100 of the present invention includes a metal fitting body 110 and a support member 160.
  • the metal fitting body 110 is preferably composed of a single plate made of a hard material (for example, steel plate, stainless steel, aluminum, or other lightweight alloy).
  • a hard material for example, steel plate, stainless steel, aluminum, or other lightweight alloy.
  • bracket scaffolding and display objects for example, traffic signs, signboards, banners
  • supported objects are fixed, and the weight when multiple workers work.
  • a medium plate or a thick steel plate preferably a steel plate having a thickness of 3 mm or more, more preferably 6 mm or more, still more preferably 9 mm or more
  • a medium plate or a thick steel plate preferably a steel plate having a thickness of 3 mm or more, more preferably 6 mm or more, still more preferably 9 mm or more
  • the metal fitting body 110 includes a force point portion 112, a fulcrum portion 114, and an action point portion 116 in this order along the horizontal direction.
  • the emphasis point portion 112 in the metal fitting body 110 is a portion in which the load from the support object attached to the support member 160, which will be described later, is directly applied to the concrete skeleton arranged below.
  • the force point portion 112 in the metal fitting main body 110 is provided at a position substantially the same height as the fulcrum portion 114 in the horizontal direction.
  • the point of effort 112 is engageable with a concrete skeleton located below the horizontal direction.
  • a substantially flat bottom surface 118 is formed from the fulcrum portion 114 to the force point portion 112 below the metal fitting main body 110.
  • the fulcrum portion 114 of the metal fitting body 110 attaches / detaches the retaining wall fixing metal fitting 100 to / from the gap of the concrete skeleton by rotating the metal fitting main body 110 (or the retaining wall fixing metal fitting 100) around the fulcrum portion 114. It can be performed.
  • the fulcrum portion 114 is described as having an obtuse angle in FIG. 1, the fulcrum portion 114 is not necessarily limited to this shape in the present invention. For example, chamfering (for example, C surface processing or R surface processing) may be performed instead of the angle forming the obtuse angle.
  • the action point portion 116 of the metal fitting body 110 is provided at a position higher than the fulcrum portion 114 in the horizontal direction. Since the action point portion 116 is provided at such a position, the action point portion 116 is inserted into the gap of the concrete skeleton and the support object is fixed to the support member 160 (that is, the force point portion 112 side). At that time, it can contact and engage with the concrete skeleton arranged above in the horizontal direction.
  • an engaging portion 120 projecting upward is provided at an end portion (opposite side of the force point portion 112) of the metal fitting main body 110.
  • the engaging portion 120 has an engaging surface 122 that can be vertically engaged with the concrete skeleton arranged above the retaining wall fixing metal fitting 100 of the present invention, and all or a part of the engaging surface 122. Can function as the point of action portion 116.
  • the metal fitting body 110 maintains a substantially parallel width on the left side of the drawing (that is, from the force point portion 112 to the fulcrum portion 114) about the fulcrum portion 114.
  • the force point portion of the retaining wall fixing bracket 100 centering on the fulcrum portion 114.
  • the metal fitting body 110 has a shape whose width is gradually narrowed toward the right side of the figure.
  • a shape of the metal fitting body 110 is not necessarily limited.
  • this gradually narrowed shape may be rounded.
  • Any shape can be selected by those skilled in the art in consideration of the shape of the concrete skeleton itself to be fixed, the strength of the metal fitting body 110, and the like.
  • the support member 160 is preferably composed of a single square timber, a square pipe, a C-shaped member, or an L-shaped angle made of a hard material (for example, steel plate, stainless steel, aluminum, or other lightweight alloy).
  • the upper end of the support member 160 is attached to the metal fitting body 110, and the lower end thereof points in a substantially vertical direction.
  • the support member 160 is attached to the metal fitting 110 by a hexagon bolt 124 and a nut 126. Instead of such hexagon bolts 124 and nuts 126, the support member 160 may be welded and integrated with the metal body 110.
  • the support member 160 is also provided with a plurality of screw holes 128 so as to be substantially parallel to the axial direction (horizontal direction) of the metal fitting body 110. Then, a bolt (not shown) for attaching a support object is arranged in the screw hole 128.
  • FIG. 2 is a schematic view for explaining an example of a method of fixing the retaining wall fixing metal fitting shown in FIG. 1 to a concrete skeleton.
  • the retaining wall fixing metal fitting 100 of the present invention is inserted from the point of action 116 into the gap 790 of the concrete skeletons 782,784,786 stacked to form the retaining wall.
  • the embankment material (earth and sand) has not been sprinkled on the back surface of the stacked concrete skeletons 782,784,786.
  • the metal fitting body 110 of the retaining wall fixing metal fitting 100 includes, for example, a C-shaped or U-shaped notch 136 or 138 in a part of the constituent surface 2 It is fixed by the stoppers 132 and 134.
  • the metal fitting body 110 of the retaining wall fixing metal fitting 100 is sandwiched between the cutout portions 136 and 138 provided in the stoppers 132 and 134, respectively.
  • FIG. 3 is a partially cutaway cross-sectional view for explaining a state in which the retaining wall fixing metal fitting shown in FIG. 2 is arranged inside the concrete skeleton.
  • the bottom surface 118 extending from the fulcrum portion 114 to the power point portion 112 below the metal fitting main body 110 is in contact with the upper surface of the concrete skeleton 782 and is engaged.
  • the engaging surface 122 of the protruding engaging portion 120 is engaged with the vertical surface of the concrete skeleton 786 via the stopper 134.
  • the concrete skeleton 786 and the engaging surface 112 of the engaging portion 120 are fixed without a gap by the stopper 134.
  • the support member 160 attached to the metal fitting body 110 and the concrete skeleton 782,786 are fixed by a stopper 132 without a gap.
  • the retaining wall fixing metal fitting 100 of the present invention cannot be moved to either the upper side or the lower side of FIG. 3, and is firmly fixed to the gap of the concrete skeleton. Then, a support object such as a bracket scaffold 170 is firmly fixed to the support member 160 by bolts 172 and nuts 174 provided separately.
  • the supporting object such as the bracket scaffold 170 is removed from the retaining wall fixing bracket 100, and then the stopper 132 is removed. After that, by rotating the force point portion 112 side upward about the fulcrum portion 114, the engagement of the action point portion 116 (that is, with the concrete skeleton 706 via the engagement surface 122 of the engagement portion 120 and the stopper 134). Engagement) is released. In that state, the retaining wall fixing metal fitting 100 can be pulled out as it is from the gap of the concrete skeleton.
  • FIG. 4 is a view showing another example of the retaining wall fixing metal fitting of the present invention, and is a schematic cross-sectional view for explaining a state in which the metal fitting is arranged in a concrete skeleton.
  • the retaining wall fixing metal fitting 200 of the present invention is a connecting bar arranged between adjacent concrete skeletons instead of an engaging surface on an engaging portion 220 provided at an action point portion 216 of the metal fitting main body 210. It is similar to that shown in FIG. 1, except that it has a receiving part 222 for accommodating 240.
  • FIG. 5 is a partially enlarged view of the schematic cross-sectional view shown in FIG.
  • the engaging portion 220 is provided with a receiving portion 222 in advance so as to accommodate the outer shape of the connecting bar 240.
  • the connecting bar 240 is arranged in a recess 794 provided in a part of the concrete skeleton 788.
  • the working point portion 216 and the engaging portion 220 of the retaining wall fixing metal fitting 200 of the present invention protrude from the back surface of the concrete skeleton 788 as shown in FIG. It is possible to form a substantially flat back surface as a whole.
  • the connecting bars 240 are arranged over the recesses 794,794'of the adjacent concrete skeletons 788 and 789, which are arranged on the concrete skeleton 782 as shown in FIG. Therefore, the retaining wall fixing metal fitting 200 of the present invention that accommodates the connecting bar 240 at the receiving portion 222 is connected to the back side of the concrete skeleton 788,789 (via the connecting bar 240) in the gap between the concrete skeletons 788 and 789. Can be indirectly engaged.
  • the bottom surface 218 extending from the fulcrum portion 214 to the power point portion 212 is engaged with the upper surface of the concrete skeleton 782 in contact with the lower surface of the metal fitting main body 210. ing.
  • the point of action portion 216 of the metal fitting body 210 is indirectly engaged (via the connecting bar 240) with the back surface side of the concrete skeleton 782 as described above.
  • the support member 160 attached to the metal fitting body 210 and the concrete skeleton 782 are fixed without a gap by the stopper 132.
  • the retaining wall fixing metal fitting 200 of the present invention cannot be moved to either the upper side or the lower side of FIG. 4, and is firmly fixed to the gap of the concrete skeleton. Then, a support object such as a bracket scaffold 170 is firmly fixed to the support member 160 by bolts 172 and nuts 174 provided separately.
  • the supporting object such as the bracket scaffold 170 is removed from the retaining wall fixing bracket 200, and then the stopper 132 is removed. After that, by rotating the force point portion 212 side upward about the fulcrum portion 214, the engagement of the action point portion 216 (that is, with the concrete skeleton 782 via the receiving portion 222 of the engaging portion 220 and the connecting bar 240). Engagement) is released. In that state, the retaining wall fixing metal fitting 200 can be pulled out as it is from the gap of the concrete skeleton.
  • FIG. 7 is a perspective view of the metal fitting for fixing the retaining wall of the present invention, showing still another example.
  • the retaining wall fixing metal fitting 300 of the present invention has a pair of L-shapes on the side opposite to the action point portion 316 (that is, the force point portion (not shown)) with respect to the fulcrum portion 314 of the metal fitting body 310.
  • the support member 360 is attached to a pair of L-shaped members 352 and 354 in the metal fitting 310 by hexagon bolts 324 and nuts 326.
  • the support member 360 is also provided with a plurality of screw holes 328 so as to be substantially parallel to the metal fitting body 310, similarly to the support member 160 shown in FIG. Then, a bolt (not shown) for attaching a support object is arranged in the screw hole 328.
  • FIG. 8 is a perspective view of the metal fitting for fixing the retaining wall of the present invention, showing still another example.
  • the support member 460 is welded and fixed to the fulcrum portion 414 of the metal fitting body 410 on the side opposite to the action point portion 416 (that is, the force point portion 412). ing.
  • the support member 460 is provided with a bar screw 456 on the side opposite to the side where the metal fitting body 410 is welded, substantially parallel to the axial direction of the metal fitting body 410.
  • the supporting object can be attached to the retaining wall fixing metal fitting 400 by passing the bar screw 456 provided on the supporting member 460 through a hole such as a screw hole provided in the supporting object.
  • the retaining wall fixing metal fitting of the present invention may be as follows, instead of the one shown above.
  • FIG. 9 is an exploded perspective view of the metal fitting for fixing the retaining wall of the present invention, showing still another example of the metal fitting.
  • the retaining wall fixing metal fitting 500 of the present invention includes a metal fitting body 510 and a support member 560.
  • the metal fitting body 510 is composed of one plate made of the same material as the metal fitting body 110 shown in FIG.
  • the metal fitting body 510 includes a force point portion 512, a fulcrum portion 514, and an action point portion 516 in this order along the horizontal direction.
  • the emphasis point portion 512 in the metal fitting body 510 is a portion where the load from the support object attached to the support member 560 is directly applied to the concrete skeleton provided below.
  • the force point portion 512 in the metal fitting main body 510 is provided at a position higher than the fulcrum portion 514 in the horizontal direction.
  • the point of effort 512 is engageable with a concrete skeleton located below the horizontal direction.
  • a substantially flat bottom surface 518 that is substantially parallel to the horizontal direction is formed in a part of the lower portion of the metal fitting body 510 from the fulcrum portion 514 to the force point portion 512.
  • the hexagon bolt 524 which will be described later, penetrates the power point portion 512 of the metal fitting body 510, so that the bolt hole 513, the hook hole 515 provided above the bolt hole 513, and the hook Shaft holes 517 provided on the fulcrum portion 517 side of the hole 515 may be provided respectively.
  • the metal fitting body 510 includes a support plate portion 521 extending below the bolt hole 513 on the side of the force point portion 512 and further downward from the force point portion 512.
  • the support plate portion 521 contacts the side surface of the support member 560 to support the support member 560, and can suppress rattling when the support object is attached to the retaining wall fixing metal fitting 500 of the present invention.
  • the support plate portion 521 itself can also serve as a "support member" without the support member 560 being particularly provided. That is, the support object may be directly fixed to the support plate portion 521 without providing the support member 560.
  • the fulcrum portion 514 of the metal fitting body 510 is a retaining wall fixing metal fitting with respect to the gap of the concrete skeleton by rotating the metal fitting body 510 (or the retaining wall fixing metal fitting 500) upward around the fulcrum part 514. 500 can be attached and detached.
  • the fulcrum portion 514 is described as having an obtuse angle, but the fulcrum portion 514 is not necessarily limited to this shape in the present invention.
  • chamfering for example, C surface processing or R surface processing
  • the action point portion 516 of the metal fitting body 510 is provided at a position higher than the fulcrum portion 514 in the horizontal direction. Since the action point portion 516 is provided at such a position, the action point portion 516 is inserted into the gap of the concrete skeleton, and the support object is attached to the support member 560 (that is, the force point portion 512 side). At that time, it can be engaged with the concrete skeleton arranged above in the horizontal direction.
  • an engaging surface 522 extending substantially flat in the horizontal direction is provided above the end portion (opposite side of the force point portion 512) of the metal fitting main body 510. All or part of the engaging surface 522 can be horizontally engaged with the concrete skeleton arranged above the retaining wall fixing metal fitting 500 of the present invention, and the engaging surface 522 functions as an action point portion 516. Can be done.
  • the metal fitting body 510 is centered on the fulcrum portion 514 and on the left side of the drawing (that is, from the force point portion 512 to the fulcrum portion 514), in order to provide sufficient rigidity to the metal fitting body 510, for example, in the height direction. It has a somewhat wide shape, and on the right side of the figure centered on the fulcrum part 514 (that is, the side from the fulcrum part 514 to the action point part 516), it is held around the fulcrum part 514 when it is removed from the concrete skeleton.
  • the side from the fulcrum portion 514 to the action point portion 516 comes into contact with the concrete skeleton arranged downward and interferes with the removal of the retaining wall fixing bracket 500.
  • It has a shape that is gradually narrowed in width (particularly a shape that is rounded at the bottom) so that it does not occur. Any shape can be selected by those skilled in the art in consideration of the shape of the concrete skeleton itself to be fixed, the strength of the metal fitting body 510, and the like.
  • the support member 560 is composed of a single square timber, a square pipe, a C-shaped member, or an L-shaped angle made of the same material as the metal fitting body 110 shown in FIG.
  • the upper end of the support member 560 is attached to the metal fitting body 510, and the lower end thereof points in a substantially vertical direction.
  • the support member 560 is attached to the metal fitting 510 by hexagon bolts 524 and nuts 526. Instead of such hexagon bolts 524 and nuts 526, the support member 560 may be welded and integrated with the metal body 510 (eg, support plate portion 521).
  • the support member 560 is also provided with a plurality of screw holes 528 so as to be substantially parallel to the axial direction (horizontal direction) of the metal fitting body 510. Then, bolts, strings, ropes, binding bands and the like (none of which are shown) for fixing the support object are arranged in the screw holes 528.
  • FIG. 10 is a schematic view for explaining a method of fixing the retaining wall fixing metal fitting shown in FIG. 9 to the concrete skeleton.
  • the retaining wall fixing bracket 500 of the present invention is inserted from the point of action portion 516 into the gap 890 of the concrete skeletons 804 and 806 stacked to form the retaining wall.
  • the embankment material (earth and sand) is not sprinkled on the back surface of the stacked concrete skeletons 804 and 806.
  • the metal fitting body 510 of the retaining wall fixing metal fitting 500 is fixed by a stopper 532 having, for example, a part of the constituent surface having a C-shaped or U-shaped notch 536.
  • the metal fitting body 110 of the retaining wall fixing metal fitting 500 is sandwiched by the notch portion 536 provided in the stopper 532.
  • the stopper 532 is provided with a shaft hole 533 in the thickness direction.
  • a shaft hole 533 of the stopper 532 and a shaft hole 517 of the metal fitting body 510 of the retaining wall fixing metal fitting 500 are penetrated by one shaft 555 to fix the retaining wall to the concrete skeleton 804,806.
  • the metal fitting 500 and the stopper 532 can be firmly fixed.
  • FIG. 11 is a partially cutaway cross-sectional view for explaining a state in which the retaining wall fixing metal fitting shown in FIG. 9 is arranged inside the concrete skeleton.
  • the retaining wall fixing bracket 500 of the present invention cannot be moved either above or below FIG. 11, and is firmly fixed in the gap between the concrete skeletons 804 and 806. Then, a support object such as a bracket scaffold 170 is firmly fixed to the support member 560 by bolts 172 and nuts 174 provided separately.
  • the supporting object such as the bracket scaffold 170 is removed from the retaining wall fixing bracket 500, and then the stopper 532 is removed.
  • the fulcrum portion 514 is slightly moved downward by using the gap 519, and the fulcrum portion 514 is moved downward.
  • the engagement of the action point portion 516 that is, the engagement between the engagement surface 522 and the bottom surface 812 of the lateral protrusion of the concrete skeleton 806) is released.
  • the retaining wall fixing metal fitting 500 can be pulled out as it is from the gap of the concrete skeleton.
  • FIG. 12 is a perspective view of the metal fitting for fixing the retaining wall of the present invention, showing still another example.
  • the retaining wall fixing metal fitting 600 of the present invention includes a metal fitting body 610 and a support member 660.
  • the metal fitting body 610 and the support member 660 are formed by bending one plate made of the same material as the metal fitting body 110 shown in FIG.
  • the metal fitting body 610 includes a force point portion 612, a fulcrum portion 614, and an action point portion 616 in this order along the horizontal direction.
  • the emphasis point portion 612 of the metal fitting body 610 is a portion where the load from the support object attached to the support member 660 is directly applied to the concrete skeleton provided below.
  • the force point portion 612 in the metal fitting main body 610 is provided at a position higher than the fulcrum portion 614 in the horizontal direction.
  • the point of effort portion 612 is engageable with a concrete skeleton located below the horizontal direction.
  • a substantially flat bottom surface 618 that is substantially parallel to the horizontal direction is partially formed from the fulcrum portion 614 to the force point portion 612 below the metal fitting body 610.
  • the fulcrum portion 614 of the metal fitting body 610 is a retaining wall fixing metal fitting with respect to the gap of the concrete skeleton by rotating the metal fitting body 610 (or the retaining wall fixing metal fitting 600) upward around the fulcrum part 614. 600 can be attached and detached.
  • the fulcrum portion 614 is described as having an obtuse angle, but the fulcrum portion 614 is not necessarily limited to this shape in the present invention. For example, chamfering (for example, C surface processing or R surface processing) may be performed instead of the angle forming the obtuse angle.
  • the action point portion 616 of the metal fitting body 610 is provided at a position higher than the fulcrum portion 614 in the horizontal direction. Since the action point portion 616 is provided at such a position, the action point portion 616 is inserted into the gap of the concrete skeleton, and the support object is attached to the support member 660 (that is, the force point portion 612 side). At that time, it can be engaged with the concrete skeleton arranged above in the horizontal direction.
  • an engaging surface 622 extending substantially flat in the horizontal direction is provided above the end portion (opposite side of the force point portion 612) of the metal fitting body 610. All or part of the engaging surface 622 can be horizontally engaged with the concrete skeleton arranged above the retaining wall fixing metal fitting 600 of the present invention, and the engaging surface 622 functions as an action point portion 616. Can be done.
  • the metal fitting body 610 is provided on the left side of the drawing (that is, from the force point portion 612 to the fulcrum portion 614) with the fulcrum portion 614 as the center, in order to provide sufficient rigidity to the metal fitting body 610, for example, in the width direction. It has a wide shape. Any length in the width direction can be selected by those skilled in the art in consideration of the shape of the concrete skeleton itself to be fixed, the strength of the metal fitting body 610, and the like.
  • the support member 660 is integrated with the metal fitting main body 610, and has a bent portion 662 in which a part of the plate-shaped portion extending downward is arranged so as to project in the front direction.
  • the support member 660 directs in a substantially vertical direction from the upper end to the lower end.
  • the support member 660 is provided with at least one screw hole 628. Bolts, strings, ropes, binding bands and the like (none of which are shown) for fixing the object to be supported are arranged in the screw holes 628.
  • FIG. 13 is a schematic view for explaining a method of fixing the retaining wall fixing metal fitting shown in FIG. 12 to the concrete skeleton.
  • the retaining wall fixing bracket 600 of the present invention is inserted from the point of action portion 616 into the gap 892 of the concrete skeletons 854 and 856 stacked to form the retaining wall.
  • the embankment material (earth and sand) may not be sprinkled on the back surface of the stacked concrete skeletons 854 and 856.
  • the retaining wall fixing metal fitting 600 of the present invention can be placed on either the upper side or the lower side of FIG. It cannot be moved and is firmly fixed in the gap between the concrete skeletons 854 and 856. Then, a support object (not shown) such as a bracket scaffold is firmly fixed to the screw hole 628 of the bent portion 662 provided in the support member 660 by means such as a screw.
  • FIG. 14 is a perspective view of the metal fitting for fixing the retaining wall of the present invention, showing still another example.
  • the retaining wall fixing metal fitting 700 of the present invention includes a metal fitting body 710 and a support member 760.
  • the metal fitting body 710 and the support member 760 are made of the same material as the metal fitting body 110 shown in FIG. 1, for example, one plate.
  • the metal fitting body 710 includes a force point portion 712, a fulcrum portion 714, and an action point portion 716 in this order along the horizontal direction.
  • the emphasis point portion 712 in the metal fitting body 710 is a portion where the load from the support object attached to the support member 760 is directly applied to the concrete skeleton provided below.
  • the force point portion 712 in the metal fitting main body 710 is provided at a position substantially the same height as the fulcrum portion 714 in the horizontal direction.
  • the point of effort portion 712 can engage with a concrete skeleton arranged below in the horizontal direction.
  • a substantially flat bottom surface 718 extending in the horizontal direction is formed from the fulcrum portion 714 to the force point portion 712 below the metal fitting main body 710.
  • the fulcrum portion 714 of the metal fitting body 710 can attach / detach the retaining wall fixing metal fitting 700 to / from the gap of the concrete skeleton by rotating the metal fitting body 710 (or the retaining wall fixing metal fitting 700) upward. ..
  • the action point portion 716 of the metal fitting body 710 is provided at a position higher than the fulcrum portion 714 in the horizontal direction.
  • the tip of the point of action portion 716 has a hook shape and can be engaged with a connecting bar arranged between concrete skeletons as described later. Since the action point portion 716 has the hook shape at such a position, the action point portion 716 is inserted into the gap of the concrete skeleton and the support object is attached to the support member 760 (that is, the force point portion 712 side). When hooked, it can engage with the connecting bar of the concrete skeleton located above the horizontal direction.
  • the support member 760 is integrated with the metal fitting body 710, and at least one screw hole 728 is provided in a part of the plate-shaped portion extending downward.
  • Bolts, strings, ropes, binding bands, etc. (none of which are shown) for fixing the object to be supported are arranged in the screw holes 728.
  • FIG. 15 is a schematic view for explaining a method of fixing the retaining wall fixing metal fitting shown in FIG. 14 to the concrete skeleton.
  • the retaining wall fixing metal fitting 700 of the present invention is inserted from the point of action portion 716 into the gap 896 of the concrete skeletons 862, 864 arranged horizontally side by side on the concrete skeleton 860 stacked for producing the retaining wall. Will be done.
  • the embankment material (earth and sand) may not be sprinkled on the back surface of the stacked concrete skeletons 860, 862, 864.
  • all or part of the bottom surface 718 extending in the substantially horizontal direction from the emphasis point portion 712 to the branch portion 714 is the upper surface of the concrete skeleton 860, which is below the metal fitting main body 710. They are in contact and engaged.
  • the working point portion 716 of the metal fitting body 710 is in contact with and engaged with the connecting bar 888 existing between the concrete skeletons 862 and 864 arranged side by side in the horizontal direction.
  • the retaining wall fixing bracket 700 of the present invention can be moved to either the upper side or the lower side of FIG. 15 when a load is applied downward through the screw hole 728 provided in the support member 760. Instead, it is firmly fixed in the gap between the concrete skeletons 860, 862, 864. Then, a support object (not shown) such as a bracket scaffold is firmly fixed to the screw hole 728 provided in the support member 760 by means such as a screw.
  • the supporting object is removed from the retaining wall fixing bracket 700, and then, for example, a hook is hooked from above into the screw hole 728, and this is slightly hooked.
  • a hook is hooked from above into the screw hole 728, and this is slightly hooked.
  • the engagement of the action point portion 716 with the connecting bar 888 by the hook is released.
  • the retaining wall fixing metal fitting 700 can be pulled out as it is from the gap of the concrete skeleton.
  • the retaining wall fixing metal fitting is inserted into the gap of the concrete skeleton from the end of the working point portion of the metal fitting body so that the fulcrum portion of the metal fitting body is located below.
  • the force point portion is engaged with the concrete skeleton arranged downward in the horizontal direction, and the action point portion is engaged. It is engaged with the concrete skeleton arranged above in the horizontal direction.
  • the object to be supported is fixed to the support member of the retaining wall fixing metal fitting.
  • a plurality of retaining wall fixing metal fittings 100 are attached between the concrete skeletons constituting the retaining wall 934.
  • a supporting object such as a traffic sign 900 is fixed to each of the attached retaining wall fixing metal fittings 100 by using, for example, bolts, strings, ropes, binding bands, or the like.
  • supported objects that can be fixed in the present invention include bracket scaffolding; display objects such as traffic signs, traffic signs, traffic banners, advertising signs, advertising banners; and the like.
  • the retaining wall fixing metal fitting of the present invention is useful at the work site where the retaining wall is formed by using the reinforced soil wall method.
  • a display object on which various information is described can be displayed, for example, provisionally or for a long period of time by utilizing the vast area of the retaining wall.
  • the use of special heavy machinery such as aerial work platforms is released. This eliminates the need for the placement of special vehicles and qualified work personnel for removal and the cost required for the placement, is simpler and safer than the current removal method, and can reduce the economic burden.
  • Retaining wall fixing bracket 110 100,200,300,400,500,600,700 Retaining wall fixing bracket 110, 210, 310, 410, 510, 610, 710
  • Support member 222 Receiving part 240 Connecting bar 352,354 L-shaped member 456 Bar screw 513 Bolt hole 515 Hook hole 517 Shaft hole 555 Shaft

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Fencing (AREA)

Abstract

La présente invention concerne un matériel conçu pour fixer une paroi de retenue et comprenant : un corps matériel comprenant, le long de la direction horizontale, une section point de force, une section point d'appui et une section point d'application, dans cet ordre ; et un élément de support qui est fixé à une partie extrémité, qui comprend la section point de force, du corps matériel, et qui s'étend le long de la direction verticale du corps matériel. La section point de force du corps matériel est apte à venir en prise avec une ossature en béton placée sous celle-ci par rapport à la direction horizontale, et est placée dans une position de hauteur sensiblement supérieure ou égale à la section point d'appui par rapport à la direction horizontale. La section point d'application du corps matériel est apte à venir en prise avec l'ossature en béton placée au-dessus de celle-ci par rapport à la direction horizontale, et est placée dans une position plus haute dans la direction horizontale que la section point d'appui.
PCT/JP2020/028949 2019-07-30 2020-07-28 Matériel de fixation d'une paroi de retenue, procédé de fixation d'échafaudage de support à une ossature en béton en utilisant ledit matériel, et procédé de fixation d'un objet d'affichage sur une ossature en béton WO2021020409A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021535368A JP7171979B2 (ja) 2019-07-30 2020-07-28 擁壁固定用金具ならびにそれを用いたコンクリート躯体へのブラケット足場の固定方法およびコンクリート躯体への表示物の固定方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-140343 2019-07-30
JP2019140343 2019-07-30

Publications (1)

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WO2021020409A1 true WO2021020409A1 (fr) 2021-02-04

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PCT/JP2020/028949 WO2021020409A1 (fr) 2019-07-30 2020-07-28 Matériel de fixation d'une paroi de retenue, procédé de fixation d'échafaudage de support à une ossature en béton en utilisant ledit matériel, et procédé de fixation d'un objet d'affichage sur une ossature en béton

Country Status (2)

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JP (1) JP7171979B2 (fr)
WO (1) WO2021020409A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968809U (fr) * 1972-09-26 1974-06-15
US7024833B1 (en) * 1998-10-19 2006-04-11 International Steel Corporation Bracket for concrete forms
JP2009144341A (ja) * 2007-12-11 2009-07-02 Masahiro Aono ブロック塀の補強支持具

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3115520U (ja) 2005-07-16 2005-11-10 雅秋 中村 案内標識器具

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968809U (fr) * 1972-09-26 1974-06-15
US7024833B1 (en) * 1998-10-19 2006-04-11 International Steel Corporation Bracket for concrete forms
JP2009144341A (ja) * 2007-12-11 2009-07-02 Masahiro Aono ブロック塀の補強支持具

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JPWO2021020409A1 (fr) 2021-02-04
JP7171979B2 (ja) 2022-11-16

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