JP6511270B2 - Supporting member of scaffolding plate and supporting method of scaffolding plate at the time of foundation concrete placing using the same - Google Patents

Description

  The present invention relates to a support member of a scaffolding board and a supporting method of the scaffolding board at the time of foundation concrete placement using the same.

  In general, when building a building or the like, foundation concrete is first placed, and then the foundation concrete is placed in a stand-up portion after hardening of the foundation concrete.

  And, it takes about 1 day to harden the foundation concrete, and because the workers can not walk on it unless it hardens to a certain extent, it is necessary to leave the inside of the concrete in the rising part if it is not open for 1 day. I can not do the placement.

  Then, since the foundation concrete is hardened in this way and concrete in the rising portion is casted, the degree of hardening differs between the base concrete and the concrete in the rising portion. For this reason, the two are not completely integrated systematically. And again, a gap will be created at the boundary between the two. In addition, it is because the surface (upper surface) of the base concrete is not a perfect smooth surface but a slight uneven surface. And, when a gap is formed between the two, the water which has entered from the gap causes the reinforcing steel in the inside to rust, which causes a problem of shortening the life of the reinforcing steel.

  In addition, since it is not possible to completely integrate the foundation concrete with the concrete at the rising portion, there is a problem that the boundary between the two is fragile in strength.

  In addition, since it is necessary to interrupt the work from the completion of the foundation concrete placement to the placement of the concrete at the rising part, it takes a lot of wasted time, and during this time, the lease fee of heavy machinery (such as pump delivery pump) In addition, labor costs etc. are also required, and the cost will increase accordingly.

In addition, after placing foundation concrete, there are cases where workers want to walk on the surface (upper surface) while they are unhardened, but it has not been possible in the past. .

  The present invention has been made in view of the above points, and by putting the foundation concrete on the foundation reinforcing bar before placing the foundation concrete, after placing the foundation concrete, it is in an unhardened state, The scaffolding board enables workers to walk on the upper side of the scaffolding board, so that foundation concrete is unhardened and the concrete of the rising part is casted, so that both are completely integrated And the strength of the boundary can be increased, and furthermore, the time required for placing concrete can be greatly reduced and the cost is significantly increased. Support member of the scaffolding board which can be reduced to the surface, and in addition, the surface concrete (upper surface) can be smoothed while the base concrete is uncured It is intended to provide a method for supporting scaffolding plate in foundation concrete after casting.

And Thus, the present invention is bridged by intersecting between foundation rebar, and the horizontal bar opposite ends for fixing a needle gold to the underlying reinforcing bar and allowed positioned so as to sandwich the iron bar from above and below, a bolt insertion hole in the center The bolt insertion holes of the pair of metal holding plates formed and the metal holding plates of the lower side of the pair of metal holding plates are inserted from the lower surface side, and the upper end portions are bolt insertion holes of the upper metal holding plate The support bolt made to project from the above, two nuts screwed into the part of the metal clamping plate on the upper side of the support bolt that protrudes from the bolt insertion hole, and the lower side is tapered without reducing the diameter toward the lower end And the lower end portion is formed with a screw hole screwed to the upper portion of the two nuts in the support bolt, and a connection support portion in which a scaffold plate bearing portion is formed at the top portion on the upper side Scaffolding characterized by The support member is intended to be subject matter.

  Further, according to the present invention, using the supporting member of the scaffolding plate, the iron rod is first crossed and fixed to the base rebar, and then the lower surface of the bolt inserting hole of the lower metal holding plate in the pair of metal holding plates The support bolt is inserted from the side, and the upper side of the support bolt is inserted into the bolt insertion hole of the upper metal holding plate, and the upper and lower metal holding plates sandwich the iron rod from above and below, Next, the two nuts are screwed into a portion of the upper side of the support bolt that protrudes from the bolt insertion hole of the metal holding plate, and then the lower nuts of the two nuts are twisted in the tightening direction. The opposing gap of the pair of upper and lower metal clamping plates is narrowed to hold the iron rod, and then screw holes connected to the lower end of the connection support are screwed into the upper end of the support bolt and connected. Together with the scaffold plate bearing Adjust the upper nut by twisting to adjust the position orthogonal to the axis of the scaffolding board, then attach the scaffolding board supporting member to the foundation rebar at a predetermined distance in the same procedure as above, and finally, both feet When the foundation concrete placed and placed on the scaffold plate support portion of the support member of the field plate straddling the scaffold plate is hardened enough for the worker to walk, the scaffold plate is removed and the connection support portion is supported by the support bolt The gist of the present invention is a method of supporting a scaffolding board at the time of foundation concrete placement using a supporting member of the scaffolding board, which is characterized in that it is removed from the above.

  Since the supporting member of the scaffolding plate according to the present invention and the method of holding the scaffolding plate at the time of foundation concrete placing using the same are as described above, they should be assembled to foundation rebar before placing foundation concrete. Thus, after placing the foundation concrete, it is possible for the worker to work while walking on the upper side using the scaffolding board while it is in a non-hardened state. Therefore, it is possible to cast the concrete of the rising portion while the base concrete is not hardened, and complete integration of the base concrete and the concrete of the rising portion can be achieved. And thereby, generation | occurrence | production of the clearance gap of both the boundary part in the past can be eliminated, and the intensity | strength of a boundary part can be increased. In addition, the time required for placing concrete can be significantly reduced and the cost can be significantly reduced, and in addition, the surface (upper surface) of the foundation concrete can be smoothed before being hardened It is

It is a perspective view of each member which constitutes a support member of a scaffold board concerning an embodiment of the present invention. It is an expansion perspective view of the lower end part of the connection support part. It is a perspective view of the state assembled | attached to the foundation rebar. It shows a procedure of how to assemble the same, shows a state in which an iron rod is fixed to a foundation rebar, and a support bolt is inserted into a pair of upper and lower metal holding plates. It shows a procedure of how to assemble the same, and shows a state in which two nuts are screwed to the upper end portion of the support bolt. It shows a procedure of how to assemble the same, and shows a state in which the lower end portion of the connection support portion is screwed to the upper end portion of the support bolt. It shows a procedure of how to assemble the same, and shows a state of twisting the upper nut. It is a sectional view showing a procedure of how to assemble the same, in which a connection support portion is connected to an upper end portion of a support bolt. It is a perspective view in the state where it was attached to the foundation rebar and the scaffolding board was mounted. It is sectional drawing of the state which removed the connection support part from the support bolt, when it becomes a required hardening state after casting of the foundation concrete.

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

First, the support member of the scaffold plate will be described.
In the figure, 1 is a support member of the scaffold board which assembles | attaches a predetermined | prescribed distance to a foundation rebar. Further, the support member 1 of the scaffold plate is made of the following members such as an iron rod, a pair of metal holding plates, and a support bolt.

  2 and 2 are iron rods, and scraps of rebars as waste material may be used, which makes it possible to reduce costs. The iron rods 2, 2 are bridged between the foundation reinforcing bars T, T, and fixed at both ends to the foundation reinforcing bars T, T with wires 3, 3 or the like.

  Numerals 4 and 5 are a pair of metal holding plates positioned so as to sandwich the iron rods 2, 2 from above and below, and bolt insertion holes 4a, 5a are bored in the central portions respectively.

  Reference numeral 6 denotes a support bolt, which is inserted from the lower surface side into the bolt insertion hole 5a of the lower metal holding plate 5 in the pair of metal holding plates 4 and 5 and the upper end is a bolt of the upper metal holding plate 4 It is made to project from the penetration hole 4a.

  Numerals 7 and 8 denote two nuts which are screwed to a portion of the metal holding plate 4 on the upper side of the support bolt 6 which protrudes from the bolt insertion hole 4a. Further, the lower one of the two nuts 7 and 8 is twisted in the tightening direction to narrow the opposing gap between the pair of metal holding plates 4 and 5 to hold the iron rods 2. The upper nut 7 is twisted and moved in the direction opposite to that of the nut 8 when connecting the later-described connection support to the upper end of the support bolt 6. The scaffolding plate support in the case is for fixing at a position perpendicular to the axis of the scaffolding plate it supports.

  Reference numeral 9 denotes a connection support portion which is connected to the upper end portion of the support bolt 6 and on which a scaffolding plate is placed. Further, the connection support portion 9 has a tapered shape in which the diameter decreases on the lower side 9A toward the lower end, and a screw hole is screwed to the upper end of the two nuts 7 and 8 in the support bolt 6 at the lower end. 9a is engraved, and a scaffold plate bearing 9B is formed at the top on the upper side to extend perpendicularly to the left and right.

The reference numeral 10 denotes a scaffolding board to be placed on the scaffolding board supporting part 9B in the connection support part 9. In addition, in the figure, 11 is a formwork for placing concrete in the rising portion, 12 is a rising reinforcing bar, and 13 is a foundation concrete placed.

Next, a method of supporting the scaffolding board at the time of foundation concrete placement using the supporting member 1 of the scaffolding board will be described.

First, as shown in FIG. 4, the iron rods 2, 2 are fixed to the foundation reinforcing bars T, T by using the wire 3. Next, the support bolt 6 is inserted from the lower surface side into the bolt insertion hole 5a of the lower metal holding plate 5 of the pair of metal holding plates 4 and 5 and the upper side of the support bolt 6 is made of the upper metal holding The steel rods 2, 2 are inserted from above and below by the pair of upper and lower metal holding plates 4, 5 by inserting them into the bolt insertion holes 4a of the plate 4.

First, as shown in FIG. 5, two nuts 7 and 8 are screwed into a portion of the metal holding plate 4 on the upper side of the support bolt 6 which protrudes from the bolt insertion hole 4a. Next, the lower nut 8 is twisted in the tightening direction to narrow the opposing gap between the pair of upper and lower metal holding plates 4 and 5 to hold the iron rods 2 and 2 therebetween. As a result, the support bolt 6 is fixed vertically to the foundation reinforcing bars T, T.

First, as shown in FIG. 6, screw holes 9a engraved on the lower end portion of the connection support portion 9 are screwed into the upper end portion of the support bolt 6 and connected, and as shown in FIG. Adjust the upper nut 7 so that it is at a position perpendicular to the axis of the scaffolding plate 10 it supports. The twisting of the nut 7 is performed using a tool such as a spanner, and the nut 7 is twisted in the direction opposite to the tightening direction of the nut 8 to securely fix the connection support 9 at a predetermined angle. .

Thus, the assembly of the first set of scaffolding board supporting members 1 is completed. Next, in the same procedure, at a predetermined distance, another set of supporting members 1 of the scaffold plate is assembled to the foundation reinforcing bars T, T. This state is as shown in FIG. And after that, the scaffold board 10 is mounted so as to straddle the scaffold board supports 9B and 9B in the support members 1 and 1 of both scaffold boards. FIG. 9 shows this state. And after that, the foundation concrete 13 is cast in this state.

According to such a method, after the foundation concrete 13 has been set, while it is in an unhardened state, it is possible for a worker to work while walking on the upper side using the scaffolding plate 10. Therefore, it becomes possible to cast the concrete (not shown) of the rising portion while the base concrete 13 is not hardened, and the structural concrete 13 and the concrete of the rising portion are structurally completely integrated. It can be done. And thereby, generation | occurrence | production of the clearance gap of both the boundary part in the past can be eliminated, and the intensity | strength of a boundary part can be increased. In addition, the time required for placing concrete can be significantly reduced and the cost can be significantly reduced. In addition, the surface (upper surface) of the foundation concrete 13 can be smoothed while it is not hardened. It is something like

Further, when the cast foundation concrete 13 is hardened to the extent that the worker can walk, the scaffold plate 10 is removed and the connection support 9 is removed from the support bolt 6. Further, at this time, since the lower side of the connection support 9 is tapered, it can be easily pulled upward after being twisted. And the removed connection support part 9 is reused in another place.

1 Scaffolding board support member 2, 2 Iron rod
4, 5 pairs of metal clamping plates 4a bolt insertion holes,
5a Bolt insertion hole 6 Support bolt 7, 8 Nut 9 Connection support part 9A Lower side 9a of connection support part Screw hole 10 Scaffolding plate

Claims (2)

Spanned by intersecting between foundation rebar, and the horizontal bar opposite ends for fixing a needle gold to the underlying reinforcing bar and allowed positioned so as to sandwich the iron bar from above and below, a pair of metallic clamping bored bolt insertion hole in the center A support bolt which is inserted from the lower surface side into the bolt insertion hole of the lower metal holding plate of the pair of metal holding plates and whose upper end portion protrudes from the bolt insertion hole of the upper metal holding plate; The two support nuts screwed to the part of the upper side of the metal holding plate projecting from the bolt insertion hole of the support bolt, and the lower end does not have a tapered shape whose diameter decreases toward the lower end. Screw holes screwed into the upper part of the two nuts in the above, and comprising a connection support part having a scaffold plate support part formed at the top on the upper side, projecting orthogonally to the left and right Scaffolding board support member. Using the support member of the scaffold plate according to claim 1, first, the iron rod is made to cross and fix to the base rebar, and then the bolt insertion hole of the lower metal holding plate in the pair of metal holding plates is the lower surface side The support bolt is inserted from above, and the upper side of the support bolt is further inserted into the bolt insertion hole of the upper metal holding plate, and the upper and lower metal holding plates sandwich the iron rod from above and below. The two nuts are screwed into the part of the upper side of the metal holding plate of the support bolt that protrudes from the bolt insertion hole, and then the lower nuts of the two nuts are screwed in the tightening direction, The opposing gap between the upper and lower pair of metal clamping plates is narrowed to hold the iron rod, and then screw holes are screwed into the upper end portion of the support bolt and connected to the lower end portion of the connection support portion. , Footplate bearing, the foot it supports Adjust the upper nut by twisting to adjust the position perpendicular to the axis of the plate, then attach the scaffold plate support member to the foundation rebar at a predetermined distance in the same procedure as above, and finally, both scaffolds When the foundation concrete placed and placed on the scaffold plate support portion of the plate support member straddling the scaffold plate support is hardened enough for workers to walk, the scaffold plate is removed and the connection support portion is removed from the support bolt A supporting method of a scaffolding board at the time of foundation concrete placing using a supporting member of a scaffolding board characterized by having been removed.

Images