JPS6312966B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waste form panel construction method that improves the workability of waterproofing.

Recently, with the significant rise in land prices, there has been an increasing need for buildings with rooms that are underground or semi-underground in order to make more effective use of land.

Generally, at building construction sites, on-site work is easily affected by natural conditions such as weather, so it is extremely important to reduce the number of on-site man-hours as much as possible, shorten the construction period, and improve work efficiency.

However, in the conventional method of constructing reinforced concrete side walls, the roots of the site are cut, crushed stones are laid down, concrete is poured, and then the wall reinforcement is assembled using the standing reinforcements. , place formwork panels on both sides, tie them with separators to determine the wall thickness, joint the separators with form ties, assemble the vertical pipes and horizontal pipes in a crossbeam and fix them with form ties, and then connect the formwork panels between the formwork panels. Because the concrete is placed in the concrete, it takes a lot of man-hours and time to prepare for the concrete pouring, and it also takes a lot of time to dismantle the formwork and clean up after the concrete is poured. The disadvantage is that it is difficult to reduce costs.

Another drawback is that the quality of the reinforced concrete is likely to be affected due to uneven spacing between the wall reinforcement and the formwork panels.

In particular, if the wall is the side wall of a basement or semi-basement, it is necessary to apply sufficient external waterproofing treatment, but in conventional construction methods, after dismantling the formwork, a mortar base is applied to the concrete side wall, and this is applied. After curing, waterproofing must be applied, which increases the number of man-hours required and the construction period, resulting in a further increase in costs.

The present invention has been made in view of the above circumstances, and provides a waste form panel construction method that improves on-site workability, shortens the construction period, and allows construction of concrete walls with excellent waterproof performance at low cost. The purpose is to

That is, in the waste form panel construction method of the present invention, when a waste form panel consisting of an outer waste form panel and an inner waste form panel is attached to a temporary material, and concrete is poured between the inner and outer waste form panels, A waterproof sheet with a width wider than the width is affixed to the surface of the outer waste form panel in advance, and the waterproof sheets of adjacent outer waste form panels are connected on the side or back side of the outer waste form panel. It is characterized by

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

In the construction of the present invention, as shown in Fig. 1, after cutting the roots of the site and disposing of the remaining soil, crushed stones 2 are laid out on the root cutting bottom 1, tamped with a rammer, and dumped on top. Place concrete 3 and mark out the foundation surface.

The floor formwork 4 is arranged along the outer circumferential surface of the side wall position using this marking line, and these are fixed onto the waste concrete 3 with concrete nails. Next, the floor waterproof sheet 5 is laid on the waste concrete 3, and the two are bonded together, and the edge 5a of the floor waterproof sheet 5 is raised along the inner surface of the floor form 4, and the space between both 5a and 4 is raised. Glue. Subsequently, a floor reinforcement panel (not shown), which has been assembled in advance at a factory, is set on the floor waterproof sheet 5, and floor concrete 6 is poured so as to embed it.

After the floor concrete 6 is cured for a predetermined period of time, a plurality of temporary materials 7 are placed along the inner side near its periphery, and its base 7a is fixed onto the floor concrete 6 using hole-in anchor anchor bolts (not shown). do. A receiving metal fitting 8 is stretched across and fixed between the upper ends of adjacent temporary materials 7, and a waste form panel 9 is attached to this.
hang.

As shown in FIG.
0a and the horizontal reinforcements 10b are combined into a grid to form a wall reinforcement panel 10, connecting members 11 are welded to this at appropriate intervals, and small panels are hung from claws formed at both ends of each connecting member to form an outer waste form frame. Panel 9a and inner waste formwork panel 9b, outer waste formwork panel 9
A wall waterproof sheet 12 is pasted in advance from slightly above the center to the bottom end. The wall waterproof sheet 12 and the floor waterproof sheet 5 are made of synthetic rubber, soft vinyl chloride, etc. and have waterproof properties.

As is clear from FIGS. 2 and 3, this wall waterproof sheet 12 is wider than the width of the outer formwork panel 9a, and therefore both sides thereof protrude to both sides of the outer formwork panel. Tongue pieces 12a, 12b
Also, near the lower end, a tongue piece 12c is formed which protrudes from the outer mold frame panel 9a.

As shown in FIG. 1, the waste form panel 9 having such a configuration is attached to the temporary material 7 by hooking and fixing the hanging metal fittings 13 screwed to the uppermost connecting member 11 onto the receiving metal fittings 8. Hanged. In this state, if necessary, join the floor rising reinforcements (not shown) protruding from the floor concrete 6 and the vertical reinforcements 10a of the wall reinforcement panel to connect the inner surface of the rising part 5a of the floor waterproof sheet and the lower end of the wall waterproof sheet 12. The vicinity and between the tongue pieces 12c are bonded using double-sided adhesive tape, adhesive, or the like.

In addition, the tongue pieces 12a and 12b of the wall waterproof sheet 12
As shown in FIG. 3, the tongue pieces 12a and 12b are drawn into the back side of the outer panel 9a, and the tongue pieces 12a and 12b are bonded together using double-sided adhesive tape or an adhesive 13. Next, after fixing the lower end of the waste formwork panel 9 on the floor formwork 4 or the floor concrete 6, the inner and outer waste formwork panels 9a, 9b are
Wall concrete 1 by pouring concrete in between
4.

After curing the wall concrete 14, the hanging fittings 13,
By removing the receiving fittings 8, the temporary material 7, and the floor formwork 4, a reinforced wall concrete whose inner and outer surfaces are reinforced with waste formwork panels 9 and which has been sufficiently waterproofed is obtained.

In the above explanation, the adjacent outer formwork panel 9
Although an example has been described in which the tongue pieces 12a and 12b that protrude to the side of a are directly bonded with the adhesive 13, the present invention is not limited to this, and FIGS.
As shown in the figure, the tongue pieces 12a, 1 of the wall waterproof sheet
2b may be housed in gaskets 14a and 14b fitted to the side surfaces of the outer waste formwork panel 9a, respectively, and a waterproof connection may be made between these gaskets using caulking material 15 or adhesive tape 16.

Note that in FIGS. 2 to 5, the gaps between adjacent waste form panels 9 are shown enlarged for convenience of explanation, but it is easy to understand that in reality, these gaps can be made extremely narrow. Good morning.

As mentioned above, in the waste form panel construction method of the present invention, a wide waterproof sheet is pre-glued to the outer surface of the outer waste form panel and is attached to the temporary material, and adjacent waterproof sheets are connected between their tongues. Therefore, even if there is some gap between the outer waste formwork panels, the poured concrete will not flow out from there, and after the wall is constructed, moisture from the outside can be prevented from entering the wall. Therefore, it is useful for side walls of basements and semi-basements where moisture infiltration is averse.

In addition, dismantling the formwork and curing the mortar base can be omitted.
Wall concrete that has been externally waterproofed can be constructed with good workability in a short construction period, making it possible to significantly reduce costs. Moreover, by using hanging type waste formwork panels, the on-site installation of the waste formwork panels is easier, and a high quality concrete wall can be obtained.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view showing an example of application of the construction method of the present invention;
Figure 2 is an enlarged front view, and Figure 3 is the − of Figure 2.
A cross-sectional view taken along the line, and FIGS. 4 and 5 are vertical cross-sectional views showing modified examples of the construction method of the present invention, respectively. 4... Floor formwork, 5... Floor waterproof sheet, 6... Floor concrete, 7... Temporary construction material, 8... Receiving metal fittings,
9...Discarded formwork panel, 10...Wall reinforcement panel, 1
1... Connecting material, 12... Wall waterproof sheet, 13...
Adhesive, 14...Wall concrete, 15...Caulking material, 16...Adhesive tape.

Claims (1)

[Scope of Claims] 1. When attaching a waste formwork panel consisting of an outer waste formwork panel and an inner waste formwork panel to a temporary material and pouring concrete between the inner and outer waste formwork panels, the outer waste formwork A waterproof sheet with a width wider than the width is pasted on the surface of the panel in advance, and the waterproof sheets of adjacent outer waste form panels are connected on the side or back side of the outer waste form panel. Discarded form panel construction method. 2. The waste form panel construction method according to claim 1, wherein the tongues of the waterproof sheets of adjacent outer waste form panels are connected to each other by adhesive on the side or back surface of the outer waste form panel. 3. According to claim 1, the tongue piece of the waterproof sheet of the outer waste form panel is housed in a gasket fitted to the side surface of the outer waste form panel, and adjacent gaskets are connected by caulking or adhesive. This is the waste formwork panel construction method.