JPH06346590A - Concrete wall construction method without external scaffold - Google Patents

Abstract

PURPOSE:To make it possible to construct a concrete wall without any external scaffold and accomplish all work from the interior. CONSTITUTION:An external wall finishing panel 1 also serving as an external wall formwork is erected in a specified location with a bedding material fitted to it. The external wall finishing panel 1 is fitted to a previously installed internal scaffold 10 through a wall sway brace 11 and an internal wall formwork panel 12 is connected to the external wall finishing panel 1 through a separator 4.a form tie 13. Concrete is placed between the external wall finishing panel 1 and the internal wall formwork 12 and, after completion of placing concrete, the external wall finishing panel 1 is left as it is and used as an external wall panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method capable of constructing a concrete wall in a high-rise building or the like without installing a scaffold outside.

[0002]

[Prior Art] When placing a concrete wall of a building,
Usually, a mold plywood and a single pipe flap are used for both the outer surface and the inner surface of the wall, and these are tightly connected with a round separator and a foam tie to form a mold. Moreover, in order to install and remove the formwork, internal scaffolds and external scaffolds are installed inside and outside the formwork, respectively, and using these scaffolds, the wall surface is finally finished.

[0003]

However, in the case of the conventional construction method as described above, if the work place is a high place (maximum height 80 m above the ground) or the distance between the outer wall fence and the steel frame is small, the external It was difficult to install the scaffold. In such a case, since the conventional construction method uses an external scaffold, it is necessary to adopt a construction method that enables construction without an external scaffold.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to construct a concrete wall without an external scaffold and to carry out work at a high place from the inside. To provide a method.

[0005]

A concrete wall construction method using an external scaffold according to the present invention is constructed at a predetermined position by attaching a base material to an outer wall finishing panel (for example, a folded plate type colored iron plate) that also serves as an outer wall formwork. This outer wall finishing panel is attached to the previously installed inner scaffold via wall tie material, and a separator /
The inner wall formwork is connected via a foam tie, concrete is placed between the outer wall finish panel and the inner wall formwork, and the outer wall finish panel after the concrete placement is left as it is.

[0006]

In the above-mentioned structure, the outer wall finishing panel is supported on the inner scaffold and used as a form at the time of concrete pouring, and after the concrete pouring is completed, the outer wall finishing panel is left as it is and used as the outer wall panel. Even if it is difficult to install external scaffolds due to the relatively high-rise building and space, concrete walls can be easily constructed.

Further, it is possible to eliminate the demolding of the outer wall formwork and the wall surface final finishing work in the conventional method, and it is possible to perform all the work safely and quickly from the inside.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment. FIG. 1 is a sectional view showing an embodiment of a concrete wall construction method according to the present invention, FIG. 3 is a sectional view showing an outer wall finishing panel, FIG. 4 is a front view showing a base material of the outer wall finishing panel, and FIGS. Is a cross-sectional view showing details of the outer wall finishing panel and the like, FIG. 8 is a cross-sectional view showing a splice portion, and FIG. 9 is a plan view showing a constructed concrete wall.

As shown in FIG. 3, an outer wall finishing panel 1, which also serves as an outer wall form panel, is a colored zinc iron plate (original plate obtained by hot dip galvanizing a cold-rolled steel plate) surface-finished with a polyester resin paint. And a folded plate having a thickness of less than 1 mm is used. Also, this exterior wall finishing panel 1
As shown in FIGS. 4 and 9, there are two types, a flat panel 1A and a corner panel 1B.

(A) Flat Panel This flat panel 1A has a size (for example, width 2745 × height 3400 mm) that can be moved by human power. Weight (about 130 kg / sheet). As shown in FIG. Furnishing material (lip channel steel) 2 and tie material (angle steel) 3 are attached to the base material.

As shown in FIG. 5, a nut 5 into which the tip screw of a round separator 4 is screwed into the outer surface of the furring strip 2 on the web.
Are fixed by welding at the stage of factory processing. The nut 5 is arranged so as to be located at the center of the mountain partial space of the outer wall finishing panel 1.

The furring material 2 and the tie material 3 as described above are grounded as shown in FIG. The tie members 3 are arranged at both ends of the furring strips 2 arranged in parallel at intervals so as to be orthogonal to the furring strips 2 and attached by bolts or the like. The tie material 3 is attached to the outer side of the furring strip 2, that is, the outer surface of the web, so that the tie material 3 is housed in the mountain space of the outer wall finishing panel 1.

The outer wall finishing panel 1 is attached to the grounded base material. For attachment, as shown in FIG. 5, a drill screw 6 is used, and the root portion of the outer wall finishing panel 1 is fixed to the furring strip 2 by this drill screw 6.

(B) Corner panel The corner panel 1B has different dimensions depending on the panel layout, but the standard size is 1000 × 1000 mm. As shown in FIG. 4, the furring material 2 and the connecting material 3 having the same specifications as the flat panel 1A are used as the base material, but the furring material 2 is processed into a chevron shape in a plan view at the factory. (See Figure 9).

After the furring material 2 and the tie material 3 are grounded, drainage drainers are attached to the projecting corners of the furring material 2 to fix the two outer wall finishing panels 1 to the furring material 2 with drill screws 6. A decorative parting iron plate 7 (see FIG. 9, the same specifications as the iron plate of the outer wall finishing panel 1) is attached to the protruding portion. The decorative parting iron plate 7 is doubly attached to prevent swelling due to concrete lateral pressure.

With the above-mentioned structure, the concrete wall is constructed by the external scaffold as follows.

<First panel installation> (1) Before the panel installation, as shown in FIG. 2, a fixing metal fitting (angle iron) 8 for fixing the outer wall finishing panel 1 to the feet is placed on the floor. It is fixed by the anchor 9.

(2) The outer wall finishing panel 1 to which a base material has been attached in advance is placed at a regular position, and its foot is fixed to the fixing metal fitting 8 by a drill screw 6 from the outside.

(3) As shown in FIG. 1, the outer building frame member 10a of the inner scaffold 10 previously installed inside and the furring material 2 at the head of the outer wall finishing panel 1 are connected by the wall joint material 11. To do. The wall connecting material 11 uses a turnbuckle 11a to which a clamp 11b and a sandwich metal 11c are attached respectively at both ends.

(4) As shown in FIG. 5, the longitudinal joint portions of the panels adjacent to each other in the lateral direction are bent inward at the ends, and after the panel is completely assembled, a piece of gum tape is attached to the joints to prevent leakage. Prevent.

(5) The tip of the round separator 4 is screwed into the nut 5 of the outer wall finishing panel 1 (furniture material 2), and the inner wall formwork panel 12a, the pier 12b, and the single pipe flap 12c are fixed by the foam tie 13. The inner wall formwork 12 is attached. When the round separator 4 is attached to the pillar-shaped portion or the corner portion other than the nut 5 portion (see FIG. 9), as shown in FIG. The receiver 14 is used. The receiving member 14 is inserted into the furring strip 2 in a horizontal orientation, and is vertically attached to the furring strip 2 so as not to rotate together (see FIG. 7B).

(6) Concrete is placed between the outer wall finishing panel 1 and the inner wall form panel 12a. The outer wall finishing panel 1 is left as it is.

<Second panel construction from the second time onward> (1) The prefabricated outer wall finishing panel 1 is transported to just below the attachment point and lifted by a porter crane installed on the internal scaffold 10.

(2) As shown in FIG. 8, the hoisted outer wall finishing panel 1 is mounted over the inside of the already built outer wall finishing panel 1 '. This stack length is 100m
It is about m. Further, a seal cushion material 15 is attached to the overlapping portion to prevent slag.

(3) As in the first time, the inner wall form panel 12 is attached via the round separator 4, and concrete is placed between the outer wall finishing panel 1 and the inner wall form panel 12a.

The outer wall finishing panel 1 is left as it is.

[0027]

As described above, the method for constructing a concrete wall using an external scaffold according to the present invention uses an outer wall finish panel as an outer wall formwork, and attaches this outer wall finish panel to an inner scaffold via a wall joint material. , Connect the inner wall formwork to this outer wall finishing panel via a separator,
Since the outer wall finishing panel is left as it is after the concrete is placed, the following effects are achieved.

(1) Construction can be performed without external scaffolds, and concrete walls can be easily constructed even when it is difficult to install external scaffolds.

(2) It is possible to eliminate the work of demolding the outer wall formwork and the final finishing work on the wall surface by the conventional construction method, and it is possible to perform all the work from the inside, so that the work can be made safe and speedy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an implementation state of a concrete wall construction method according to the present invention.

FIG. 2 is a cross-sectional view showing how the outer wall finishing panel in FIG. 1 is attached to the floor.

FIG. 3 is a cross-sectional view showing an outer wall finishing panel.

FIG. 4 is a front view showing a base material of an outer wall finishing panel.

FIG. 5 is a cross-sectional view showing details of an outer wall finishing panel / base material attachment state and a panel joint portion.

6 is a sectional view taken along line VI-VI in FIG.

7 (a) is a sectional view taken along line VII-VII in FIG.
(B) is a sectional view as seen from the inside of (A).

FIG. 8 is a sectional view showing a joint portion of the concrete wall of the present invention.

FIG. 9 is a plan view showing a concrete wall constructed according to the present invention.

[Explanation of symbols]

 1 Outer wall finishing panel 1A Flat panel 1B Corner panel 2 Furring material 3 Connecting material 4 Round separator 5 Nut 6 Drill screw 7 Makeup parting iron plate 8 Fixing metal fitting 9 All anchor 10 Internal scaffolding 11 Wall connecting material 12 Inner wall formwork 13 Form tie 14 Receiving Hardware 15 Seal cushion material

Claims (1)

[Claims] 1. A base material is attached to an outer wall finishing panel that also serves as an outer wall formwork and built in a predetermined position, and the outer wall finishing panel is attached to a previously installed internal scaffold through a wall joint material, and the outer wall finishing is performed. Connect the inner wall formwork to the panel via the separator foam tie, place concrete between the outer wall finishing panel and the inner wall formwork,
A concrete wall construction method using an external scaffold, characterized in that the outer wall finishing panel is left as it is after the concrete is placed.