JP2023060617A - U-shaped permanent form of rising foundation of building - Google Patents

Abstract

To solve the problem that formation of a housing foundation requires a skilled workman, a certain period until concrete becomes hard is necessary, working efficiency is poor, scheduling is troublesome, and cost increases.SOLUTION: In a form of a rising foundation of a building foundation, the form is a U-shaped form that is integrated with placed concrete after the form has been used in a construction, the bottom of the U-shape is placed in a mesh state, concrete is placed on both of side walls, the U-shaped form is arranged on a base foundation in a construction site, the concrete is placed, concrete flows in from frames of a reinforcement mesh material of the bottom of the U-shaped form and is directly bonded to the base foundation and cured, and the placed concrete and the U-shaped form are formed into a permanent form that is bonded to each other and cured.SELECTED DRAWING: Figure 1

Description

The present invention relates to a U-shaped throwaway formwork for rising foundations of buildings.

An example of a construction method for constructing a concrete foundation at the time of construction of a conventional general house will be described. First, a skilled craftsman digs a concave position for building the base foundation within the site, lays gravel or crushed stone on the bottom of the excavation, applies top pressure, casts concrete on top, and embeds it inside the concrete foundation to form the foundation. To strengthen the rebar unit assembly work, put a water thread on the rising rebar, put the top of the base out of the water thread, and stick a tape to mark the height of the base, or Shortly cut rebar bars called mekugi were driven into the width of the base to increase the height of the base.
In addition, bars with dimensions that match the width of the base are made, and the base frame is fixed to the outside of the rebar units assembled to match the bars using rebar bars, wooden stakes, or nails, and the assembled base frame is poured into concrete. A large amount of soil was backfilled to reinforce it so that it would not yield to the pressure during construction.

After that, the concrete base is placed in the base frame, and after the concrete base is completed, the face plate of the riser form is coated with release agent oil, and the riser form is placed on the base using the top and bottom fasteners. When assembling, since the release agent oil is applied to the face plate of the frame, the release agent may drip onto the concrete base under the frame from the time the rising formwork is assembled until the ready-mixed concrete is placed. Many, and the base frame was removed, but it was difficult to remove, and the one with a broken or cracked frame plate was thrown away.
Such a process requires a skilled craftsman and requires a certain amount of time for the concrete to harden, resulting in poor work efficiency and troublesome scheduling, which leads to an increase in housing construction costs.

On the other hand, we are also working on streamlining this construction method, and an integrated formwork construction method that integrates the base foundation and the rising foundation, which completes the concrete placement in the base foundation frame and the rising foundation on the upper part at once, has been proposed. there is

Utility Model No. Showa 55-140548 Public Relations Japanese Unexamined Patent Publication No. 11-148137

According to the above integrated formwork method, the work process seems to be simpler than the conventional method. The work of pouring waste concrete on top of it and leveling it is the same as before. In addition, in the subsequent work, the integrated formwork for the base and riser will be installed, but the formwork is divided into several parts and must be assembled and arranged with accurate dimensional accuracy, which requires time and effort. are doing.

The present invention has been made in view of the above problems, and includes the first step of laying the gravel or crushed stone, applying pressure to the top, placing waste concrete on top of it and leveling it, and the second step. By integrating the construction of the base foundation in (1) and reviewing the formwork in the construction of the rising foundation (3), we are further simplifying the conventional construction method and shortening the work period by doing it efficiently.

In order to achieve the above object, the U-shaped discarded formwork for rising foundations for buildings according to the first aspect of the present invention is a formwork for rising foundations of building foundations. A U-shaped form that is integrated with the concrete that has been cast, the bottom of the U-shaped is placed in a mesh state, and both side walls are filled with concrete,
At the construction site, the U-shaped formwork is placed on the base foundation and concrete is poured. It is characterized by being a discard formwork that hardens and that the placed concrete and the U-shaped formwork are bound and hardened.

The U-shaped discarded formwork for the rising foundation of the building of the present invention is a left and right pair of integral formwork itself, and does not require on-site assembly. It is possible even if it is not expensive.
In any of the prior art documents, the left and right sides are not integrated, and after the bottom surface is flattened by a waste concrete or the like, a base is provided to hold the width of the base and support the rising portion.

In addition, in the present invention, even if the concrete of the base foundation is not completely hardened, the bottom surface of the U-shaped discarded form has a bearing capacity, so that the U-shaped discarded form can be set in a short period of time, shortening the construction period. It makes scheduling easier.
Furthermore, the U-shaped abandoned formwork for the rising foundation is produced at a factory, which enables high precision and high productivity and reduces the price. By not removing the , post-processing becomes unnecessary. In addition, the left and right formwork itself is integrally molded at the factory, so there is no need to finish the outer surface and top surface of the rising foundation with mortar or the like to make the surface smooth, which reduces costs and shortens the construction period.

(1) is a front view of the formwork for manufacturing the U-shaped discarded formwork for the rising foundation (2) is a perspective view of the mesh material bent into a U shape (3) is the formwork for the U-shaped discarded formwork for the rising foundation The front view (4) with the U-shaped mesh material incorporated in the above is the front view (5) where concrete is poured into the formwork of the U-shaped discarded formwork. U-shaped discard formwork (1) is a diagram of the stirrups erected on the base foundation at the construction site (2) is a U-shaped discarded formwork (3) for the riser foundation brought to the construction site and placed on the riser foundation. Figure (4) with the U-shaped abandoned formwork installed shows the main reinforcement (horizontal), anchor bolts, etc. assembled in the U-shaped abandoned formwork (5) shows ready-mixed concrete placed in the U-shaped abandoned formwork for the rising foundation figure with the is an example of conventional concrete cloth foundation construction

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments shown below are examples of U-shaped discarded formwork for the rising foundation of a building for embodying the technical idea of the present invention, and are not intended to limit the present invention to these. It is equally applicable to other embodiments within the scope of the claims.

Fig. 3 shows an example of conventional concrete foundation construction. After filling the gap with gravel and tamping it, the surface is flattened by laying waste concrete, a temporary frame is installed on the gravel with a predetermined base width, and concrete is poured to form the base part of the continuous foundation. , A temporary frame for the rising part of the concrete cloth foundation is assembled in the middle part of the upper surface of the base part, concrete is poured into it to form the rising part of the concrete cloth foundation, and the temporary frame for the base part and the rising part is removed and placed in the groove. The soil is backfilled, and mortar is applied to the outer surface, top surface, and top surface of the part that rises above the ground to finish the surface smooth.

In this construction method, the concrete for the base foundation and the standing foundation is poured three times separately, and it is necessary to wait for the concrete to harden, etc., so the formwork is removed, transferred, and removed. A lot of labor and time was spent on cleaning the ducts, etc., and the construction period was long and the cost was high.
Therefore, as a method for solving the above-mentioned drawbacks, a method has been proposed in which the temporary frames for the base foundation and the standing foundation are integrated and the concrete is cast.
For example, a pair of side plates are manufactured separately, each lower end is fixed to both ends of a concrete base width holder on site (the pedestal has that function), and the pair of side plates are arranged symmetrically. , both ends of the top edge width holder of the concrete foundation are fixed to the top plate of each of the side plates to form a temporary formwork for the concrete foundation, and this formwork is placed in the ground groove to form the mold. Concrete is poured into the frame, and the concrete for the base part of the continuous foundation and the concrete for the raised part are molded in one shot (this function is also provided to the pedestal), and the formwork is not removed, and the concrete is placed underground as it is. A proposal has been made to construct a concrete cloth foundation using the side plates as the outer walls.
However, although the base and rising formwork are integrated, the members disassembled into several parts must be assembled and arranged on site with accurate dimensional accuracy, and the assembly work requires time and effort. It is intended to improve the shortcomings.

FIG. 1 describes the manufacturing process of a U-shaped discard form 20 for a rising foundation at a factory. However, in the present invention, a major difference is that concrete is not placed in the portion corresponding to the bottom of the U shape.
In the first process, when the U-shaped waste formwork 20 for the rising foundation for building is manufactured in a factory, the mesh material 11 is folded in a predetermined size into a U-shape for reinforcement of the formwork to manufacture the U-shaped formwork. Then, concrete 60 or the like is placed on the side walls, and the mesh material 11 remains on the bottom.

Figure 2 describes the work procedure at a construction site. The first one shows an example of conventional concrete foundation construction. A split stone 40 is set up on the bottom of the formed groove, gravel is filled in the gap, and the surface is flattened by laying a waste concrete 41 on top of it. A frame 31 is installed and concrete 60 is placed to form a continuous base foundation 30. - 特許庁
In addition, when inserting reinforcing bars into the rising foundation 00 as necessary, the stirrups 22 (vertical bars, through the gaps of the mesh material 11 of the U-shaped discarding form 20) are erected, and the U-shaped discarding form 20 of the rising foundation 00 is erected. are arranged, the horizontal reinforcement 23 (the reinforcement unit 24 may be used) and the anchor bolt 25 are assembled.
As another method, a short-sized stirrup 22 is erected, and after the U-shaped discard formwork 20 is arranged, the stirrup 22 and the reinforcing bar unit 24 are connected.
Also, on the base foundation 30, the U-shaped throw away formwork 20 for the rising foundation for the building is arranged. It is easy to obtain dimensional accuracy and does not require much expertise.

Next, concrete 60 is poured into the U-shaped discarded formwork 20 for the rising foundation, flowed into the base foundation 30 from the mesh material 11, and directly bonded and hardened to the base foundation 30. The base foundation 30 and the rising. This is a construction method in which the foundation 00 is integrated.
Since the U-shaped throwaway formwork 20 is not removed, no post-treatment is required, and since the formwork is formed at the factory, there is no need to finish the outer surface and top end surface of the rising foundation 00 with mortar or the like to make the surface smooth. It shortens the construction period and reduces costs.

Concrete foundations have straight sections, right-angled corner sections, T sections, cross sections, etc.
In the straight part, the U-shaped waste formwork 20 is connected horizontally and extended.In that case, a gap of about 3 to 5 mm is provided at the connection part of the side plate and an adhesive tape such as asphalt adhesive tape is applied inside. There is a method of gluing and stuffing joint material from the outside, but it is also good to work on other members as appropriate.

00 Rise foundation 10 Formwork for U-shaped discard formwork for riser foundation 11 Mesh material 20 U-shaped discard formwork for riser foundation 22 Stirrups
23 Main bars (horizontal)
24 reinforcing bar unit 25 anchor bolt 26 width stopper
30 Base foundation 31 Temporary frame 40 Split stone 41 Scrap concrete
60 Concrete

Figure 1 describes the manufacturing process of U-shaped waste formwork at the factory in (1) to (5), (1) is a front view of the formwork for manufacturing the U-shaped waste formwork for the rising foundation , (2) is the mesh (3) is a front view in which the U-shaped mesh material is incorporated into the formwork of the U-shaped discard formwork for the rising foundation , (4 ) is the form of the U-shaped discard formwork Front view of pouring concrete into the frame . Figure 2 describes the process of installing a U-shaped discarded formwork at the construction site in (1) to (5) . ) is the U-shaped discarded formwork for the rising foundation brought to the construction site , (3) is a drawing of the U-shaped discarded formwork placed on the rising foundation , (4) is the inside of the U-shaped discarded formwork. , Main bars (horizontal), anchor bolts, etc. are assembled . (5) is a drawing of ready-mixed concrete poured into the U-shaped discarded formwork for the rising foundation . Figure 3 shows an example of conventional concrete cloth foundation construction.

FIG. 1 describes the manufacturing process of a U-shaped discard form 20 for a rising foundation at a factory. However, in the present invention, a major difference is that concrete is not placed in the portion corresponding to the bottom of the U shape.
In the first process, when manufacturing a U-shaped discard formwork 20 for a rising foundation for a building in a factory, FIG. 1(1) is a formwork 10 for producing a U-shaped formwork. In FIG. 1(2), the mesh material 11 is bent into a U shape with a predetermined size to reinforce the formwork, and in FIG. 1 (4), concrete 60 or the like is placed on the side wall, the bottom is in the state of mesh material 11, and after the concrete hardens, FIG. 1 (5) shows a U-shaped This is a U-shaped discarding mold 20 obtained by punching the discarding mold 20 from a mold.

Figure 2 describes the work procedure at a construction site. The first one shows an example of conventional concrete foundation construction. A split stone 40 is placed on the bottom of the groove formed according to the width and depth, and the gap is filled with gravel and tamped. A temporary frame 31 is installed on a determined base width, and concrete 60 is placed to form a base foundation 30 of continuous foundation.
Next, in FIG. 2(3), the U-shaped discarding formwork 20 manufactured at the factory in FIG .
At this time, when reinforcing bars are incorporated into the rising foundation 00 as necessary, the stirrups 22 are erected, and after disposing the U-shaped discarded formwork 20 of the rising foundation 00, the horizontal reinforcement 23 (reinforcement unit) shown in FIG. 24) and anchor bolts 25 are assembled.
The factory-manufactured U-shaped discarded formwork 20 is solid and strong, and does not require on-site assembly. can be set .

Next, as shown in FIG. 2(5), concrete 60 is poured into the U-shaped discarded formwork 20 for the rising foundation, poured into the base foundation 30 from the mesh material 11, and directly bonded to the base foundation 30. This is a construction method in which the base foundation 30 to be hardened and the standing foundation 00 are integrated.
Since the U-shaped throwaway formwork 20 is not removed, no post-treatment is required, and since the formwork is formed at the factory, there is no need to finish the outer surface and top end surface of the rising foundation 00 with mortar or the like to make the surface smooth. It shortens the construction period and reduces costs.

In order to achieve the above object, the U-shaped discarded formwork for rising foundations for buildings according to the first aspect of the present invention is a formwork for rising foundations of building foundations. A U-shaped formwork that integrates with the concrete that has been
The bottom of the U-shaped formwork is placed in a mesh state, and both side walls are an integral mold for pouring concrete,
At the construction site, the U-shaped formwork is arranged on the base foundation through the ribs erected on the base foundation in the mesh-like gaps of the formwork, concrete is poured, and the bottom of the U-shaped formwork is placed. Concrete flows in from the frame of the reinforcing mesh material and directly bonds and hardens with the base foundation, and the cast concrete and the U-shaped formwork bond and harden. and

Claims (1)

In the formwork for the rising foundation of the building foundation, the formwork is a U-shaped formwork that integrates with the poured concrete after being used in construction, the bottom of the U-shape is placed in a mesh state, and both side walls are made of concrete. and
At the construction site, the U-shaped formwork is placed on the base foundation and concrete is poured. A U-shaped discarded formwork for a rising foundation of a building is characterized by being a discarded formwork in which cast concrete and said U-shaped formwork are hardened and hardened.

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