JPH0119497B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention involves suspending waste formwork panels from a temporary unit, transporting them from a factory to a construction site, setting them at the construction site, and pouring concrete.
This invention relates to a waste form panel construction method that shortens construction period, saves labor, reduces costs, and improves quality by recovering temporary units.

When constructing reinforced concrete side walls, the construction methods shown in FIGS. 1 and 2 have been generally employed.

That is, after laying crushed stone on the ground and pouring concrete on top of it, pour concrete floor 1 as shown in Figure 1, draw ground markings 2 on its surface to indicate the side wall position, and then Protruding vertical stripes 3
The wall reinforcements 5 are arranged by connecting the horizontal reinforcements 4 and necessary vertical reinforcements.

Next, formwork panels 6 are arranged on both sides of the wall reinforcement 5 using the ground markings 2 as landmarks, and the formwork panels on both sides are tightly connected with separators 7 (Fig. 2) to determine the wall thickness. A weir plate 8 is installed between the ends of the panel, and a concrete nail 9 is attached to the lower wood 6a on the back of the panel.
Fix it to the floor concrete 1 using.

Next, form ties 10 are attached to both ends of the separator 7.
are jointed and used to fix the pipe crosspieces 11a, vertical pipes 11b, and horizontal pipes 12 arranged on the back of the panel, thereby firmly connecting the connected formwork pipes.

After constructing the formwork through the above steps, concrete is poured into it to form the side walls 13.

However, with the above-mentioned conventional method, it takes a lot of man-hours to prepare for pouring side wall concrete on-site, and it also takes time to dismantle and transport the formwork for concrete pouring, which increases man-hours and costs. It has the disadvantage of rising.

Furthermore, the wall reinforcements 5 move due to pressure during concrete pouring, which tends to cause variations in the positional relationship between the wall reinforcements 5 and the form panel 6, which poses a problem in the quality of the obtained side walls.

In addition, especially recently, there has been an increasing need for rooms with semi-underground or underground structures in order to make effective use of land, but when trying to construct side walls suitable for this using conventional construction methods, it is difficult to assemble and remove formwork panels. In order to gain more space, the underground excavation area has increased,
There is a disadvantage that the amount of backfilling work also increases.

The present invention has been made in view of the above circumstances, and provides a waste form panel construction method that shortens on-site construction time, reduces man-hours, lowers construction costs, and improves the quality of concrete walls. do.

That is, in the waste form panel construction method of the present invention, a temporary unit having a box-shaped frame with a waste form panel hung on the side is carried to a construction site and set on the foundation surface, and the waste form panel is The temporary unit is characterized in that concrete is placed inside the temporary unit and then the temporary unit is recovered.

The details of the present invention will be explained below with reference to the drawings showing one embodiment thereof.

When constructing the present invention, as shown in Fig. 3, after cutting the roots of the site with the remains and disposing of the remaining soil, crushed stones 21 are laid out on the root cutting bottom 20, compacted with a rammer, and dumped on top. Con22 is poured and the foundation surface is marked out.

On the other hand, in a factory, as shown in FIG. 4A, a temporary unit 30 is formed by assembling molded steel etc. into a box-shaped frame, and a waste form panel 4 is installed around it as shown in FIG. 4B.
0 etc. are carried to the construction site by a unit carrier 50 etc. as shown in Figure C, and set in a predetermined position on the disposal concrete (foundation surface) 22 by a crane 60 as shown in Figure D. .

Depending on the building area, the temporary unit 30 may be used alone or in combination as shown in FIG. 4D.

As shown in FIG. 3, the temporary unit 30 includes a level adjustment fitting 32 at the bottom of a column member 31, and a column member 31 that protrudes downward from a lower beam 33.
A collar 34 made of expanded polystyrene is removably attached to the circumferential surface of the collar 34 to facilitate its removal.

In this temporary unit 30, a floor truss 41 is bolted to the lower part of the lower beam 33, a floor reinforcement panel 42 is attached to this, and an angle member 36 fixed to the upper beam 35 is attached to a suspended mold via a hanging metal fitting 37. A frame panel 40 is attached.

As schematically shown in FIG. 3, the waste form panel 40 includes a reinforcing panel 45 in which vertical reinforcements 43 and horizontal reinforcements 44 are combined in a parallel grid, and a connecting member 46 fixed to the reinforcement panel 45.
and an outer waste frame panel 48 formed by suspending a plurality of small panels 47 from claws protruding from both ends thereof.
a and an inner waste form panel 48b, the vicinity of the lower end of the inner waste form panel 48b is fixed to the column member 31 via a fixing fitting 49, and the lower end of the vertical reinforcement 43 of the reinforcement panel 45 is fixed in advance. It is jointed to the floor reinforcement panel 41.

After the temporary panel 30 with the waste form panel 40 etc. attached as described above is set on the foundation surface, it is leveled using the level adjustment fittings 32 so that the top surface of the waste form panel matches the reference line. fine-tuned.

Next, floor concrete 70 is placed so as to embed the floor truss 41 and floor reinforcement panel 42, and then wall concrete 71 is placed between the inner and outer cast form panels 48a and 48b.

After the floor concrete 70 and wall concrete 71 cast in this way are cured for a predetermined period of time, the hanging fittings 37 and fixing fittings 49 are removed from the temporary unit 30, and the bolts that fasten the floor truss to the temporary unit are removed, and the temporary Only the unit 30 is lifted up by the crane 60 as shown in FIG. 4E. As shown in FIG. 4F, this temporary unit 30 is again loaded onto the unit transport vehicle 50 and returned to the factory.

As mentioned above, in the waste form panel construction method of the present invention, the temporary unit with the waste form panel removably attached is transported to the construction site using a unit transport vehicle, etc., and set on the foundation surface. After adjusting the level accordingly and pouring the wall concrete inside the waste form panel, the temporary unit is collected, so the construction accuracy is good.
The number of man-hours is reduced, the construction period can be shortened and labor can be saved, and high-quality reinforced concrete walls can be constructed.

Moreover, since the temporary unit can be recovered to the factory using the return vehicle of the ground unit transport vehicle, the transportation efficiency is good, and together with the above-mentioned reasons, the total cost can be significantly reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view illustrating the conventional construction method, Fig. 2 is a plan view thereof, Fig. 3 is a vertical cross-sectional view in the gutter direction showing an embodiment of the construction method of the present invention, and Fig. 4 is a perspective view illustrating the construction method of the present invention. Figure A is a perspective view of the temporary unit, Figure B is a perspective view of the temporary unit with waste form panels etc. attached, Figure C is a perspective view of the temporary unit being transported, and Figure C is a perspective view of the temporary unit. Figure D is a perspective view showing the process of setting the unit with the temporary formwork panels etc. attached on the foundation surface, Figure E is a perspective view showing the process of removing the temporary unit after pouring concrete,
Figure F is a perspective view showing the fixing of the temporary unit for transportation to the factory. 5... Wall reinforcement, 6... Formwork panel, 7... Separator,
10... Form tie, 30... Temporary unit, 31
...Column member, 32...Level adjustment fitting, 33...Lower beam,
34...Collar, 35...Upper beam, 36...Angle member, 37...Hanging fittings, 40...Discarded form panel, 41
...Floor truss, 42...Floor reinforcement panel, 45...Reinforcement panel, 46...Connecting material, 48a...Outer waste form panel, 48b...Inner waste form panel, 49...Fixing metal fittings, 50...Unit carrier, 60 ...Crane, 7
0...floor concrete, 71...wall concrete.

Claims (1)

[Scope of Claims] 1. A temporary unit having a box-shaped frame with a waste form panel suspended on the side is carried to a construction site, set on the foundation surface, and concrete is poured into the waste form panel. A waste form panel construction method characterized in that the temporary unit is poured and then the temporary unit is recovered. 2. A waste formwork panel according to claim 1, wherein a level adjustment tool is provided at the lower end of the column member of the temporary unit, and the height of the temporary unit waste form panel is adjusted by adjusting this level adjustment tool. Construction method. 3. The waste form panel according to claim 1 or 2, comprising a reinforcing panel, a connecting member, and an outer waste form panel and an inner waste form panel suspended from the connecting member. Formwork panel construction method. 4. Scope of Claims in which the vicinity of the upper end of the waste form panel is suspended from a temporary unit via a hanging fitting, and the vicinity of the lower end of the waste form panel is removably fixed to the temporary unit by a fixing fitting before being transported to a construction site. The waste form panel construction method according to any one of paragraphs 1 to 3. 5. The waste form panel construction method according to any one of claims 1 to 4, wherein a collar is removably attached to the part of the column member of the temporary unit that is embedded in the floor concrete.