JPH0754351Y2 - Abandoned formwork used in the temporary construction method - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is an H-shaped steel for supporting a temporary above-ground floor for performing construction of this basement from the ground during the construction of a concrete building having a basement, for example. It is a formwork used in the temporary construction method such as when constructing a concrete part typified by concrete slabs around temporary members typified by temporary piles, etc. Alternatively, the present invention relates to a waste frame that can achieve space saving in transportation and can be easily handled.

[0002]

2. Description of the Related Art Conventionally, for example, a basement floor construction work of a concrete building having a basement floor is performed as follows. First, as shown in FIG. 1, a sheet pile 1 is driven around the planned construction site to construct an earth retaining wall 2. Next, from the ground, the temporary piles 3 made of, for example, H-shaped steel are driven at a required interval. Then, the temporary ground floor 4 is provided on the ground while being held by the temporary pile 3. After this, the excavator 5 such as a backhoe placed on the temporary ground floor 4 is used to excavate to a required depth. Next, concrete slab 6
To build. When this series of construction work is completed, the temporary pile 3 is pulled out and removed. Then, the through holes or recesses of the removal marks of the temporary piles 3 formed on the concrete slab 6 are backfilled with concrete.

In the construction work of such a basement floor, in order to remove the temporary pile 3 after the completion of a series of works,
For example, in Japanese Patent Laid-Open No. 59-8838, a pair of halves is formed from a foamed synthetic resin body or rubber as shown in FIG. 20 on the outside of a through portion or an embedded portion corresponding to the concrete slab 6 of the temporary pile 3. It is disclosed that the release member 8 divided into the constituent parts 7, 7 is arranged.

[0004]

However, even though the release member 8 is divided into the pair of component parts 8 and 8, the external shape and the cross section of the temporary anti-resistance member 3 are almost the same. Since they have the same shape and are arranged on the outer side, they are bulky and require a lot of space for storage or transportation. Moreover, since the shape is complicated, it is difficult to handle. Further, since the release member 8 is formed of a material that is easily deformed, when the heavy cutting machine 5 such as a backpo moves vertically and horizontally on the temporary ground floor 4 during the construction period,
The temporary resistance 3 bends within the required range of the thickness of the release member 8,
The temporary ground floor 4 held by this swings vertically and horizontally,
This may hinder work on the ground. For this reason, normally, after pouring concrete, a required portion of the release member 8 is scraped from above, and by using this scraped portion, wedges are driven from above between the temporary resistance 3 and the poured concrete. There is a need. Further, when the temporary anti-removal 3 penetrates through the concrete slab 6 of multiple layers, it is necessary to remove the release member 8 prior to this removal. Furthermore, the generation of waste materials is also a problem. Then, the concrete slab 6 has a temporary anti-3
At the place where is erected up and down,
After the temporary anti-removal 3 is removed, when the through hole formed in the removed trace is backfilled with concrete, it is necessary to dispose the formwork through the support below the through hole of the concrete slab 6. .

In view of the above conventional problems, a scrap frame used in the temporary construction method according to the present invention was devised. For example, in the construction work of a concrete building having a basement, Used in the temporary construction method when constructing a concrete part represented by a concrete slab around a temporary member represented by a temporary pile such as an H-shaped steel that supports a temporary ground floor for performing construction from the ground during the period. It is a scrap frame that is formed by integrally molding the whole in a plate shape.
The objective is to save space for storage or transportation and to facilitate handling.

[0006]

In order to achieve such an object, according to claim 1 of the present invention, the outer shape and the cross section of the temporary member have a size such that there is a space between the outer surface of the temporary member. In order to have a cylindrical shape of almost the same shape, a bent portion at the connecting angle is provided transversely in the width direction, and the anchor portion is provided on the surface corresponding to the outer surface and the bent portion is provided on the surface corresponding to the inner surface. By constructing the locking portions respectively, a waste form frame used in the temporary construction method was constructed in which the core material was mainly composed of cement and the core material was embedded in the length direction and integrally molded into a plate shape. Further, in the second aspect, the core material is positioned inside the bent portion so as to be placed inside the bent portion, and both side edges on the inner side of the bent portion of the bent portion are provided with notched edge portions that are diagonally cut and face each other. In addition, according to claim 3, a concrete holding member for backfilling is provided so that it can be folded back from the portion corresponding to the lower portion of the inner side surface to the portion corresponding to the upper portion thereof. Each is illustrated. Furthermore, in claim 4, in claim 3, the holding member is formed of a wire mesh.

[0007]

The construction of the concrete portion around the temporary member using such a scrap frame is as follows. First, for example, a slab formwork such as a plywood panel is arranged via a support immediately below a through-hole or an embedding part corresponding to a horizontally oriented concrete part of a temporary member provided in the vertical direction. After this, a temporary frame is placed outside the temporary member with a space provided between the temporary member and the bending frame so as to surround the outer surface of the temporary member, and the waste frame is assembled in a three-dimensional shape to prevent the temporary member from bending. A space holding member is dropped from above between the outer side surface and the inner side surface of the scrap frame to be locked to the locking portion of the scrap frame. In this state, concrete is cast around the outer surface of the scrap frame. By doing so, even when a large moving load is applied to the temporary ground floor held by the temporary member, the bending of the temporary member is regulated, and the work on the ground is less likely to be hindered. . Then, when the temporary member is to be removed after the concrete has hardened, the spacing member is first removed, and then this is pulled out. After this, at the place where the temporary member is erected in a state of penetrating the concrete part, after removing the temporary member,
When backfilling the through hole formed in the scrap frame of this removal trace with concrete, fold back the holding member provided on the inner surface of the scrap frame in the direction to close the through hole, Work from. In addition, the recess formed in the scrap frame is also worked from above when backfilling with concrete. In addition, a part of various structural members may be penetrated or embedded in the through hole or the recess of the concrete portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the scrap frame used in the temporary construction method according to the present invention will be further described with reference to the accompanying drawings.

Here, an explanation will be given by exemplifying the case where it is used in the case of constructing a concrete slab having a basement floor as shown in FIG. 1, for example, in a basement floor construction work of a concrete building.

The scrap frame 10 is constructed by integrally assembling two plate-like ones into a three-dimensional shape to form a pair of divided parts 13 and 13, which are combined. Occasionally, the temporary pile 3 is formed into a cylindrical shape having an H-shape having a cross-section that is substantially the same as the outer shape of the cross section of the temporary pile 3. In addition, the outer surface has an anchor portion 11, and the inner surface has a locking portion 12 of the spacing member. The anchor portion 11 on the outer side surface and the locking portion 12 on the inner side surface are preliminarily formed to have substantially the same thickness as shown in FIGS. 2, 3, 4, and 5, and are assembled into a three-dimensional shape. Component 1
When 3 and 13 are formed, both the outer side surface and the inner side surface are provided so as to be tapered surfaces with the lower surface side narrowed from the upper surface side. Further, the three recesses provided in the upper and lower horizontal directions of the surface corresponding to the outer side surface are for forming the auxiliary anchor portion 14. Further, as described above, the scrap frame 10 has the constituent parts 13 which are divided into two pairs as shown in FIG.
As shown in FIG. 7 and FIG. 8, it is formed into a plate shape at the time of molding, but it is bent at a bending portion 15 which forms a connecting angle portion provided transversely in the width direction, The shapes are shown in FIGS. 4 and 5. In order to enable such bending, both sides of the component 13 are left in the entire length direction thereof, and the core material 16 formed of the wire mesh is bent outside at the bending portion 15 as shown in FIG. Notches 17 are provided on both sides of the bent portion 15 on the inner side of the bent portion so as to face each other and are obliquely cut.
By providing the cut-out edge portion 17, a ridge is formed on the molding die, whereby the core material 16 is located outside the bent portion in this portion. In the figure, 18 is a portion corresponding to the lower part of the inner side surface of the constituent parts 13, 13 between the bent parts 15, 15.
As shown in 10, it is a holding member for concrete to be backfilled, which will be described later, which is extended from the edge of the core material 16 to the outside and is provided on all of the surfaces corresponding to the seven inner surfaces. In addition, in the figure, 19 is one end separate from the core material 16 and is incorporated in the constituent portion 13,
It is a concrete auxiliary holding member for backfilling, which has the other end extended to the outside and is provided only on the surfaces corresponding to the two inner surfaces. Then, the holding member 18 and the auxiliary holding member 19
After removing the temporary anti-removal 3, until the through-hole formed in the scrap frame 10 of the removal trace is backfilled with concrete, as shown in FIG. 9 and FIG. It is desired that the inner side surface be provided along the inner side surface from the portion corresponding to the lower side to the portion corresponding to the upper side so that this does not hinder a series of operations. Further, the holding member 18 and the auxiliary holding member 19 are folded back in the direction of closing the through hole of the removal trace of the temporary anti-resistance 3. At this time, at least those on the adjacent surfaces or the surfaces facing each other are at least the same. It is considered to form the length relationship such that the tip sides overlap each other.

The wire mesh of the core material 16, the holding member 18, and the auxiliary holding member 19 has a wire diameter of 0.7 to 1.5 m.
m, preferably 0.9 to 1.1 mm, and the distance between the materials is 1
Those in the range of 10 to 10 mm, preferably 3 to 7 mm are suitable.

Further, the scrap frame 10 is made mainly of cement because it is necessary to leave it in the cast concrete. Among the materials mainly composed of cement, it is preferable to use a material impregnated with a polymer because the thickness can be molded to, for example, about 1 cm and the shape can be freely set. Further, it is preferable that the fluidity is good before curing and the rigidity becomes large after curing.

By the way, using the scrap frame according to the present invention,
Even when the concrete slab 6 is provided around the temporary building 3, after constructing the earth retaining wall 2 by driving the sheet pile 1 around the planned construction site, the temporary piles 3 made of H-shaped steel are provided at the required intervals from the ground. Open and drive in, and temporarily stake 3 on the ground
The temporary ground floor 4 is provided in a state of being held at, and the process of excavating to a required depth using the excavator 5 such as a backhoe placed on the temporary ground floor 4 is the same as the conventional process.

Next, a slab formwork 20 such as a plywood panel is arranged directly below the penetrating or embedding part of the temporary pile 3 corresponding to the concrete slab 6 via a support (not shown).
After this, as shown in FIG. 11, a scrap frame composed of a pair of constituent parts 13 and 13 assembled at a three-dimensional shape by folding the temporary pile 3 at a space outside the temporary pile 3 at a bending portion 15 from its side. Then, the seal member 21 is attached to the upper surface of the scrap frame 10 as shown in FIG. Furthermore, in order to prevent the bending of the temporary pile 3,
As shown by 3 and 14, a wedge-shaped spacing member 22 formed between the outer side surface and the inner side surface of the temporary protection 3 is dropped from above and locked to the locking portion 12 of the scrap frame 10. And
In this state, as shown in FIG. 15, concrete is cast around the outer surface of the scrap frame 10 such that the upper surface is substantially flush with the upper surface of the seal member 21. By doing so, the bending of the temporary anti-restriction 3 is regulated, and the work on the ground is less likely to be hindered. Next, as shown in Figure 16, slab formwork
Remove 20. And after the concrete hardens,
When removing the temporary anti-removal member 3, first, the spacing member 22 is removed, and then this is pulled out and removed. Since the temporary formwork 3 and the concrete slab 6 face each other with a scrap frame 10 interposed therebetween, the concrete slab 6 is removed when the temporary formwork 3 is removed.
It reduces the risk of damage to. After this, at the location where the temporary proof 3 is erected in the concrete slab 6 in a penetrating state, after removing the temporary proof 3, the through hole formed in the scrap frame 10 of the removal trace is filled with concrete. When performing the returning process, the holding member 18 provided on the scrap frame 10, the auxiliary holding member 19 (not shown) are folded back in the direction of closing the through-hole as shown in FIGS. Do the work. When this holding member 18 is folded back, if there is a portion where at least the tip ends do not overlap with each other between those on the adjacent surface or the facing surface, or the holding member
When the material forming the member 18 has low rigidity, it is considered to drop the closing member formed of the wire mesh from above.
Then, the sealing member 21 attached to the upper surface of the scrap frame 10 is removed, and the upper surface of the scrap frame 10 is also backfilled with concrete so as to be flush with the surroundings. Below the holding member 18 of the scrap frame 10, concrete or mortar may be appropriately backfilled. In this way, concrete slab 6
If the through hole formed in the removal mark of the temporary anti-removal 3 is backfilled with concrete, the work of disposing the formwork below the through hole via the support becomes unnecessary. Further, regarding the recess formed in the scrap frame 10, when the backfilling process with concrete is performed, the scrap frame 10 is provided with a holding member 18 and an auxiliary holding member.
Even if 19 is provided, work is performed from above without folding back this in the direction of closing the recess.

In the scrap frame 10, the core material 16 and the holding member
As the auxiliary holding member 19, a net-like material other than a wire net, various punching sheets, various woven fabrics, knitted fabrics, non-woven fabrics and the like can be used. Further, the core material 16 can also be provided by arranging strips of wire or the like in parallel with each other in parallel with the length direction thereof. Further, if the bending portion 15 is bendable, various forms can be used.

Further, the holding member 18 and the auxiliary holding member 19 provided on the scrap frame 10 are not limited to the arrangements shown in the drawings, and it may be considered to utilize them for the rebar work.
However, the scrap frame 10 does not necessarily need to be provided with the holding member 18 and the auxiliary holding member 19, and those without them can be used.

Further, the anchor portion 11 provided on the outer side surface and the locking portion 12 provided on the inner side surface, in addition to the illustrated embodiment,
It is appropriately considered to form the protrusions or provide the protrusions in a scattered manner.

Further, the discarding frame 10 may be divided into other two or more parts without being formed into the component parts 13 and 13 which are divided into two parts.

Further, it is also possible to form such a scrap frame 10 so that when it is bent at the bending portion 15 and assembled into a three-dimensional shape, it becomes one complete product.

Regardless of the illustrated embodiment, the temporary members represented by the temporary pile 3 include H-shaped steel, L-shaped steel, and C-shaped steel.
Shaped steel, hollow round steel, hollow square steel, and various solid steel bars can be used.

In the illustrated embodiment, the scrap frame according to the present invention is used in the case of constructing a concrete slab for a basement floor construction work of a concrete building having a basement floor. Also, in addition to this, it should be used when forming a through hole or a recess to support various structural members such as pipes in a concrete part such as a floor or a wall in a state of being penetrated or a part of which is embedded. Is also possible. It can also be used when forming a recess for supporting a handrail support on a veranda, a median strip of a road, a support such as a card rail, in a state where its lower end is embedded.

[0022]

[Effects of the Invention] The scrap frame used in the temporary construction method according to the present invention as described above is integrally molded into a plate shape, so that space saving for storage or transportation can be achieved and the handling is easy. It can be done. Further, after arranging on the outer side of the temporary member, it is possible to accurately position the outer surface of the temporary member and the space holding member between the outer member and the space holding member, for example, from above, and to restrict the bending of the temporary member. it can. Furthermore,
When a concrete holding member is provided on the inner surface, at the place where the temporary member is erected vertically in the concrete part, after removing the temporary member, the through hole formed in the removal trace When the backfilling process is performed by, the holding member is simply folded back in the direction of closing the through hole, and the work can be performed without disposing the formwork below the through hole through the support. Further, since this remains in the concrete portion after the concrete is placed, the generation of waste materials is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory vertical sectional view showing an outline of a basement floor construction work of a concrete building having a basement floor, for example.

FIG. 2 is a perspective view showing an assembled state of constituent parts of a pair of scrap frames according to the present invention divided into two parts.

FIG. 3 is a front view showing an outer side surface in an assembled state.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view showing an inner surface of the same.

FIG. 6 is a front view showing an outer side surface in a deployed state.

FIG. 7 is a plan view of the same.

FIG. 8 is a front view showing the inner surface of the same.

9 is an enlarged end view taken along the line AA in FIG.

FIG. 10 is an enlarged end view of BB in FIG.

FIG. 11 is a vertical cross-sectional explanatory view showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 12 is a vertical cross-sectional explanatory view showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 13 is a vertical cross-sectional explanatory view showing the construction process sequence of a concrete building using a scrap frame according to the present invention.

FIG. 14 is an explanatory cross-sectional view showing the order of steps for constructing a concrete building using the scrap frame according to the present invention.

FIG. 15 is a vertical cross-sectional explanatory view showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 16 is a vertical cross-sectional explanatory diagram showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 17 is a vertical cross-sectional explanatory diagram showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 18 is an explanatory vertical cross-sectional view showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 19 is a vertical cross-sectional explanatory view showing the construction process sequence of the concrete building using the scrap frame according to the present invention.

FIG. 20 is a perspective view showing a conventional release member.

[Explanation of symbols]

 1 Sheet pile 2 Earth retaining wall 3 Temporary pile 4 Temporary ground floor 5 Excavator 6 Concrete slab 7 Constituent part 8 Releasing member 10 Waste form frame 11 Anchor part 12 Locking part 13 Constituent part 14 Auxiliary anchor part 15 Bending part 16 Core material 17 Notched edge 18 Holding member 19 Auxiliary holding member 20 Slab formwork 21 Sealing member 22 Interval holding member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Kuwahara, Shita, Kawashima-cho, Asa-gun, Tokushima Prefecture, Nitta, Mitsushima, No. 179, No. 1 Nippon Funen Co., Ltd. No. 179 No. 1 Inside Nippon Funen Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A bent portion having a size such that there is a gap between the outer surface of the temporary member and the connecting angle of the temporary member so that the outer shape of the cross section of the temporary member is substantially the same as the cross section. Are provided transversely in the width direction, the anchor part is formed on the surface corresponding to the outer surface, and the locking part is formed on the surface corresponding to the inner surface. A scrap frame used in the temporary construction method in which a core material is internally installed in the vertical direction and integrally molded into a plate shape. 2. The core member is positioned inside the bent portion at the outside of the bent portion to be internally mounted, and both side edges on the inside of the bent portion of the bent portion are provided with notched edge portions which are diagonally cut to face each other. Claim 1
A scrap frame used in the described temporary construction method. 3. The concrete holding member according to claim 1 or 2, wherein a concrete holding member is provided along the portion corresponding to the upper portion of the inner side surface to the portion corresponding to the upper portion, and the portion corresponding to the lower portion is backfilled so that it can be folded back. A formwork used in the temporary construction method of. 4. The scrap frame used in the temporary construction method according to claim 3, wherein the holding member is formed of wire mesh.