JPH0468162A - Supporting tool of concrete mold for vertical placing - Google Patents

Abstract

PURPOSE:To simply carry out operations, by setting a screw rod at the end of a separator erected on a horizontal mold, inserting the pierced hole at the horizontal arm of a supporting tools into the screw rod and fastening it with nuts, and installing a lateral steel pipe between the fitting parts of the vertical arm. CONSTITUTION:A mold 23 for vertically placing concrete is erected on a horizontal mold 20. And a plurality of separators 27 are erected by form-ties 28 along parallel lines at intervals at the lower edge of the mold 23. Next, a screw rod 29 is screwed at the end of respective separators 27. Next, the pierced hole in the horizontal arm 2 of a supporting tool A is inserted in the screw dod 29 and the horizontal arm 2 is fastened by nuts 30 set at the screw rod in the confronted condition of the vertical arm 1 against the mold 23. And further, laterally fastening steel pipes D are respectively placed between respective pipe fitting parts 8, 9 provided in the vertical arm 1 to contact the mold 23.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention provides a method for supporting the upper end side of a retaining wall, such as a handrail-like retaining wall installed on the veranda of a reinforced concrete sound-collecting house, for example. This invention relates to a support for a vertical wall casting formwork for casting a wall that does not have an i-structure.

(Prior Art) Fig. 4 shows an outline of the conventional construction method for constructing the above-mentioned handrail-like retaining wall.

Immediately, on the front edge of the horizontal formwork 52 on which the balcony floor 50 is to be cast, two vertical formworks 53 53 are erected, separated by a predetermined distance from each other using a horizontal separator 54 . In order to keep the vertical formwork properly erected, from the lower edge of the vertical formwork 53 toward the inside of the building, at a location at least 1" away from the lower edge of the vertical formwork 53, at least approximately twice the height of the vertical formwork 53, A fixing fitting 56 is attached to the horizontal formwork 52.

Then, one end of an expandable brace (bracing device) 55 that keeps the vertical formwork 53 vertically is connected to this fixing metal fitting 56,
The vertical positioning of the vertical formwork 53 was performed by fixing the other end to the upper end of the vertical formwork 53 and adjusting its length.

Alternatively, as shown by the two-dot chain line in the upper left of the figure, braces 55 were stretched between the reinforcing bars 57 that constitute the frame of the upper N floor and the upper end of the vertical formwork 53.

This brace 55 is constructed of a slidable inner and outer double pipe or two slidably superimposed strip plates, and has pin holes 58 provided at multiple locations in the longitudinal direction. The length can be changed by inserting a stop pin and rotating the threaded portion 59 of the inner and outer pipes.

(Problems to be Solved by the Invention) However, the above-mentioned brace 55 as a support for the formwork had considerable drawbacks as listed below.

a) Fixing the fixing metal fitting 56 at one end of the brace 55 to the horizontal formwork 52 in accordance with the height dimension of the vertical formwork 53, starting with the fixing positioning work, installation of the brace 55, and completion of use. It was necessary to carry out complicated work such as removing the braces 55 and repairing the rough concrete surface at the removed location, and this series of work was difficult to perform unless one was an experienced worker.

1]) Bracing 55 and its fixing fittings 56 as consumables
It was also difficult to ignore the purchase costs.

C) As mentioned above, it may be difficult or impossible to install the long braces 55 depending on the situation of the formwork installation location. often got in the way of concrete pouring work.

d> During the work of placing concrete I, spilled concrete 1~ tended to clog the pin holes 58 of the braces 55, and in that case, extra effort was required to remove them. .

e) Extra expenses were required for work management related to the use of the braces 55, including inventory management of the tube holes 55 and their fixing fittings 56, etc., which are consumables.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a support for concrete formwork for vertical pouring, which can largely eliminate the above-mentioned conventional drawbacks.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the support for the concrete formwork for vertical pouring according to the present invention provides, for example, a handrail-like retaining wall on the concrete floor surface. Vertical pouring formwork 2 for erecting etc.
3, the vertical arm part 1 of the main body 3 has a form in which a vertical arm part 1 and a horizontal arm part 2, each having a predetermined length, are connected at right angles. Steel pipe hanging parts 8.9 are provided at a plurality of locations spaced apart from each other at predetermined intervals vertically, respectively, for hanging horizontally tightened steel pipes, and a through hole 11 is provided in the vertical direction in the horizontal arm part 2, and the concrete A plurality of separators 27 are set up in an array at predetermined intervals on a horizontal formwork 20 for pouring a floor surface, and each of the threaded ends 27a of each separator 27 or the threaded end 27. The through hole 11 of the support A of the present invention is inserted into the threaded part 29 connected to the threaded part 27a.
Or each support A by screwing screws 1 to 30 onto the threaded part 29.
are fixed in an upright state on each of the separators 27, and in this state, between the steel pipe hooking portions 8.8 and 9.9 of each of the supporting devices A, on the side surface of the vertical surface casting form 23. The structure is such that the horizontally clamped steel pipes that come into contact with each other are constructed in the form of a bridge.

The vertical arm portion 1 may have a variable length.

(Function) First, the horizontal formwork 20-1 for pouring the floor surface into the concrete 1
A vertical casting form 23 is erected on the lower edge thereof, and a plurality of separators 27 are erected at a predetermined interval along lines parallel to the lower edge thereof at a predetermined interval.

Then, the bright portion 27a at the upper end of each separator 27, or
The threaded rod 29 connected to the threaded part 27a is inserted through the through hole 11 of the horizontal arm part 2 of the support A of the present invention, and with the vertical arm part 2 facing the vertical surface casting form 23, A pair of upper and lower oaks 1 to 3 in which the horizontal arm part 2 is screwed to the screw rod 29
If the tension is 0.30, the support A is fixed to each separator 27 in an upright state.

In this state, horizontally tightening steel pipes are installed between the respective steel pipe hanging parts 8 and 8 and between 9 and 9 provided on the vertical arm part 1 of each support A, and these horizontally tightening steel pipes are attached to the vertical surface. When applied to the sides of the pouring form 23, this vertical pouring form 23
Correctly vertically supported by

(Example) Hereinafter, an example in which the present invention is applied to a case where a handrail-like retaining wall is provided on the balcony of a reinforced concrete condominium building will be described with reference to FIGS. 1 to 3.

First, in Figure 3, which shows the state immediately after the veranda floor and handrail-like retaining wall have been cast together, B is the veranda floor, and C is the veranda floor that was erected at the edge. It is a handrail-like retaining wall.

Reference numeral 20 denotes a horizontal formwork for pouring the floor B, which is supported by pipe supports 27 scattered on the construction base through tII pipes 22 arranged horizontally in a grid pattern.

Reference numeral 23 denotes a vertical pouring formwork for pouring the handrail-like retaining wall C. Two formwork plates 23 and 23 are separated at a predetermined interval by using a separator 24 and fasteners 25 as supports for the formwork. It has a simple structure that is placed opposite the two sides.

A spacer 26 serves to lift and support the lower end of one formwork plate 23 by the thickness of the floor B.

27 is a separator installed vertically in the horizontal formwork 2a, which is placed at a predetermined distance on a line parallel to the lower edge of the vertical casting form 23 (extending in the front and back directions of the paper) and spaced apart by a predetermined pressure. They are placed at multiple locations spaced apart. Reference numeral 28 denotes a Baum tie for fastening and fixing the separator 27 to the horizontal formwork 20.

A screw rod 29 is connected to the upper end of each separator 27, and a female screw screwed to the terminal bright portion 27a of the separator 27 is provided at the lower end thereof.

The support A of the present invention having an abbreviated shape is obtained by inserting a screw rod 29 through a through hole 11 provided in the horizontal arm portion 2 described below, and then screwing the horizontal arm portion 2 between the upper and lower sides. By fastening with wing nuts 30.30, the upper end of the separator 27 is fixed in an upright position.

D is two horizontally tightened steel pipes interposed vertically between the vertical wall fixed formwork 23 and the support A at a predetermined interval.

Next, the support A of this embodiment having the form shown in FIG. The main body 3 is formed by welding at right angles so as to form a letter shape.

And, in order to make the length of the vertical arm part 1 expandable and retractable,
A movable vertical arm part 4 made of a square metal pipe having a predetermined length is fitted into the upper part of the vertical arm part 1 so as to be slidable up and down.

5 is a fixing means for fixing the movable vertical arm part 4 at an arbitrary height position, and includes a nut 6 concentrically welded to a punch hole provided on the upper side surface of the vertical arm part 1, and a nut 6 screwed onto this nut 6. It consists of a screw rod 7. The tip of the screw rod 1 serves as a pressing portion that comes into contact with the outer surface of the movable vertical arm 4, and the base end is bent at a right angle to form a handle.

On the outer side (left side in the figure) of the vertical arm part 1, a steel pipe hanging member 8, which is a metal plate bent into an L shape, is welded upward to the lower part to form a steel pipe hanging part. Another L-shaped steel pipe hanging member 9 is welded downward to one end.

Reference numeral 10 denotes a corner plate, which plays the role of keeping the vertical arm member 1 and the horizontal arm member 2 in correct orthogonal alignment.

Reference numeral 11 denotes an elongated through hole that vertically passes through a portion near the end of the horizontal arm portion 2, into which a screw rod 29 is inserted.

Next, the operation of the above configuration will be explained.

First, the horizontal formwork 20 for pouring the floor and the vertical formwork 23 for pouring the handrail-like retaining wall are constructed in the state shown in FIG. 3 by a well-known shoring method.

Next, a plurality of separators 2 are placed at a plurality of locations along lines parallel to each other at predetermined intervals from the bottom edge of the form plate 23.
7 are set upright using Baum ties 28 with a predetermined spacing between them. The length of each of these separators 27 is set so that when a concrete floor is cast on the horizontal formwork 20, the upper ends thereof protrude somewhat above the floor surface.

Next, a screw rod 29 is screwed onto the terminal bright part 27 of each separator 27 that is set upright, and a screw 30 is screwed into one of the butterfly nuts 1 to the screw rod 29 to obtain the desired height from the floor. Then, the through hole 1 of the horizontal arm part 2 of the support A is
1 through this threaded rod 29, and bring the vertical arm part 1 into a state where it is facing the vertical surface casting formwork 23.Finally, another wing nut 30 is screwed together to make the support tool A horizontal. If the arm portion 2 is temporarily fastened, the support A is fixed to the separator 27 in an upright state. Therefore, the vertical arm part 1 of support A
Check the vertical status using a spirit level, etc., and if it is tilted,
Correct the inclination of the separator using a work tool such as a crowbar.

In this way, after the supports A are erected on each separator 27, the steel pipe hooking members 8, 8 and 9 of each support A are
. At that time, if the vertical surface casting form 23 and the horizontal steel pipe girder are not in close contact, once the temporarily fastened upper butterfly nuts 1 to 30 are loosened, the through hole 11 is a long hole, so it can be horizontally tightened. By moving the arm portion 2 back and forth, it is possible to avoid the close contact state.

Therefore, when the wing nuts 30 are fully fastened, the vertical surface casting form 23 is correctly vertically supported by the plurality of supports A via the horizontally tightened steel pipes. In this state, concrete is poured into the upper surface of the horizontal formwork 20 and inside the vertical pouring formwork 23, respectively.
By injecting 1 to 1, the balcony floor B and the handrail-like retaining wall C are integrally formed.

In addition, in the above configuration, the vertical and horizontal arm parts 1 and 2
may be made of a metal round pipe, the material is not limited to metal, the corner plates 10 are not necessarily required, and the object of the present invention can be achieved even if the detailed structure is changed as appropriate.

[Effects of the Invention] As is clear from the above explanation, the support for concrete I/formwork for vertical surface pouring according to the present invention has various excellent effects as listed below.

a) To fix the support in place and to remove it, fasten its horizontal arm to one separator set upright on the construction floor using the oak l-, and screw it off to the oak 1. Surprise is enough.

1) Therefore, unlike the use of conventional braces 55, the work of supporting vertical surface casting formwork can be significantly simplified, and even non-skilled workers can perform the work.

C) The brace is different from the consumable brace 55, Can be used repeatedly.

d) Separators are essential materials for supporting concrete formwork, so unlike braces 55, which are required only when supporting vertically poured formwork, their purchase, storage, etc. There is no need to spend special effort and expense for this purpose.

e) The brace of the present invention, unlike the long brace 55,
Since it occupies much less space in the attached state, there is almost no need to interfere with the concrete pouring work.

[Brief explanation of drawings]

1 to 3 show an embodiment in which the present invention is applied to the case of constructing a handrail-like retaining wall for a veranda of a reinforced concrete multifamily housing complex, and FIG. 1 is a perspective view; FIG. 2 is a side view illustrating how to install and use the device, and FIG. 3 is a diagram illustrating the state in which it is used. FIG. 4 is a diagram corresponding to FIG. 3 showing a conventional example. Code Table 1 Vertical arm part 2 Horizontal arm part 3 Main body,
4 Movable vertical arm section 5 Fixing means
6 Nut 7 Screw rod 8, 9 Steel pipe ■/stop member (steel pipe hanging part) 0 Corner plate
11 Through hole 0 Horizontal formwork 27 Pipe supports 1 and 2 Crosspieces 3 Vertical surface casting formwork (formboard plate) 4 Horizontal separator 25 Fastening fittings 6 Subena 27 Separator 7a Tip threaded portion 28 Baum tie 9 Screw rod 30
eN Natsu I・(Nara I・)Δ Support B
Floor C Handrail-shaped retaining wall D Horizontal tightening steel pipe 0 Floor 51 Handrail-shaped retaining wall 2 Horizontal formwork
53 Vertical formwork 4 Separator 55 Bracing 6 Fixing metal fittings 51 Rebar 8 Bottle hole 59 Threaded part

Claims (2)

[Claims] (1) For example, vertical arms each having a predetermined length are used to correctly support vertically cast formwork 23 for erecting a handrail-like retaining wall or the like on a concrete floor. A steel pipe hanger in which horizontally clamped steel pipes D are respectively hung at a plurality of locations spaced vertically at predetermined intervals on the vertical arm part 1 of a main body 3 having a form in which a part 1 and a horizontal arm part 2 are connected at right angles. stop portions 8 and 9 are provided; a through hole 11 is provided in the vertical direction in the horizontal arm portion 2; and a plurality of separators 27 are provided at predetermined intervals in the horizontal formwork 20 for pouring the concrete floor surface. are erected, and each of the threaded ends 27a of the respective separators 27 or the threaded rods 29 connected to the threaded ends 27a are inserted into the through holes 11 of the support A of the present invention, and the threaded parts 27a are Alternatively, each brace A is fixed in an upright state on each separator 27 with a nut 30 screwed onto the screw rod 29, and in this state, between the steel pipe hooking parts 8, 8 and 9, 9 of each brace A. A support for a concrete form for vertical surface pouring, characterized in that a horizontally clamped steel pipe D is constructed in a bridge-like manner between the vertical surface pouring forms 23 and brought into contact with the side surface of the vertical surface pouring form 23. (2) The support for a concrete form for casting a vertical wall body according to claim 1, wherein the vertical arm portion 1 is configured to have a variable length.