JPS6340058A - Method of formwork construction for concrete capable of being fixed from inside and formwork thereof - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field This invention is applicable to construction and construction from the inside of a structure to be constructed.
This article relates to concrete formwork construction methods designed to allow for fixation, and the formwork materials used therein.

Conventional technology As shown in Drawing 1, the conventional method of fixing concrete formwork is to arrange wooden or other panel materials on both sides of the concrete wall to be constructed, and to maintain the wall thickness with bottles called separators. Later, materials such as wooden crosspieces, foam ties, and steel pipes were used to tighten, tie, and secure the structure from both sides in an attempt to withstand the lateral pressure of the concrete.

However, with this construction method, if you want to build a structure that fills the entire site, you must either leave enough open space outside the formwork for workers to work on it (see Drawing 2), or reinforce it with steel pipes etc. from the beginning. The panels were either erected from the inside and left in place after construction was completed. (
Refer to Drawing 3. However, even in this case, an open space of about 20 cm from the outside wall is required due to the frame materials and reinforcing materials, etc., and because it cannot be dismantled and removed, costs increase, rot from abandoned formwork, and termites. There were problems such as the occurrence of ) Problems that the invention aims to solve However, the desire to utilize expensive land 100% effectively is not only the desire of all building owners, but also a very useful research topic for Japan, a country with a small land area. Met.

Means for Solving the Problem The present invention has succeeded in realizing the problem in a simple manner. To explain it now based on the drawings, (a) Fix the panel support frame (5) and adjust the alignment and horizontal level of the foot of the panel.

(b) Insert the formwork panel (1) cut to the required height at the factory into the panel receiving frame (5).

(c) Attach the panel support frame (5') for the head coverlet to the formwork panel (
Insert it into the top of 1).

(d) Attach the horizontal rim (2) to the formwork panel (1) to allow passage through it and to integrate the structure of the formwork panel.

(E) Use the separator (3) and its mounting bracket (4) to maintain the wall thickness and connect it tightly with the inner general panel (6).

(f) After tightening and fixing the inner general panel with steel pipes or other materials, use supports, braces, etc. to adjust and maintain the structure and street.

Example In addition, the following things can be considered in implementation.

(a) Use commercially available products such as keystone plates and deck plates as panel formwork.

(b) Manufacture specially shaped formwork panels to provide greater strength and rigidity.

(c) Consider the rust prevention treatment, surface finish, frame material used, etc. to create a decorative panel.

Effects of the Invention Therefore, if this construction method is utilized, (a) 100% of the site can be utilized effectively even in commercial areas and other legally permissible areas, even in densely populated areas.

(b) Since construction can be carried out only from the inside, it is possible to omit part of the temporary scaffolding, which conventionally accounted for a large proportion of construction costs.

(c) Since general circulation type steel plates can be used as formwork panel materials, costs can be reduced.

(d) Since no special tools or techniques are required, the construction work can be carried out within the scope of work of conventional formwork carpenters.

(E) Even if the interior is exposed, the position of the separator holes can be set freely in terms of design.

(f) By taking anti-corrosion treatment and the materials used, the form panel itself can be used as a beautiful ribbed decorative exterior wall material.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional formwork fixing method. Figure 2 is the same as above (a cross-sectional view when a person works outside the building. Figure 3 is a cross-sectional view when a person works outside the building). Figure 4 is a cross-sectional view when a person works without going outside. A perspective view of the formwork fixing method. Figure 5 is a sectional view of the same as above. ) is the panel support frame (5'), and (6) is the general formwork panel patent applicant Tsutomu Togo.

Claims (2)

[Claims] (1) Formwork panels (1) and their accessories (2) to (5') that have been bent or otherwise processed to stand on their own and withstand the lateral pressure of concrete, and general formwork (6). When used in conjunction with this method, concrete formwork can be fixed and completed by working only from the inside. (2) In the concrete formwork construction method that can be fixed from the inside, the formwork panel (1) is bent or otherwise processed to stand on its own and withstand the lateral pressure of the concrete.
Flange angle (2), separator (3) and mounting bracket (
4) - (5') are set so that the formwork material can be tightly connected to the general formwork inside.