JPH0416630A - Residence base construction method - Google Patents

Abstract

PURPOSE:To shorten the construction period by erecting supporting members at the position corresponding to the columns of a house, arranging forms on both sides of the supporting members connected to each other, pouring concrete slurry in the forms, and building the house while the concrete slurry is cured. CONSTITUTION:Supporting members 9 to 11 are erected at the positions in a construction site corresponding to the positions for the columns of a house 3 to be built on a base 2 and are connected to each other by connecting members 12... and 13... made of precast concrete. Next, forms 43... are arranged on both sides of the lower sections of the supporting members 9 to 11 and connecting members 12... and 13..., and concrete slurry is poured in the forms 43.... While the concrete slurry is cured, the house 3 is built on the supporting members 9 to 11 and connecting members 12... and 13....

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of constructing concrete foundations for houses, and is applicable to foundations of unit houses and houses using conventional construction methods, including steel frames. It is available.

[Background technology]

Conventionally, for unit houses built by combining multiple housing units and houses built using conventional construction methods including steel frames, a formwork is erected on top of the abandoned concrete at the construction site, and the inside of this formwork is A foundation was created by pouring concrete slurry, and once this foundation was completed, construction work on the building that would be built on top of the foundation began.

In addition, for both the base and upright parts of the foundation, the foundation was also constructed by connecting short precast concrete pieces prefabricated at a factory in parallel at the construction site (Japanese Patent Application Laid-Open No. 1983-1999-1). 112825, Japanese Patent Publication No. 64-
83747, Japanese Unexamined Patent Publication No. 60-92517, etc.), and even with such conventional techniques, construction work for a building on the foundation was started after the foundation was completed.

That is, in the past, construction work for a building on the foundation was performed after the work to create the foundation was completed.

[Problem to be solved by the invention]

According to such conventional technology, the construction work of the building cannot be started until after the foundation is completed, so there is a problem that the construction period of the house becomes longer.

In particular, unit housing is built using the unit construction method, which uses housing units pre-produced in factories, with the main purpose of shortening the construction site work period by improving the industrialization rate and reducing the proportion of construction site work. However, construction work on the building above the foundation cannot begin until after the foundation is completed, which means that the construction period for the house at the construction site is longer due to the period of foundation construction work. This cannot be fully achieved due to foundation construction work.

In addition, in the conventional technology using precast concrete, the base of the foundation is also made of precast concrete, which requires accurate leveling of the discarded concrete, which makes workability that much worse.

The purpose of the present invention is to be able to complete the construction work of the building above the foundation seven days before the foundation is completed, thereby shortening the construction period of the house at the construction site, and eliminating the need for accurate leveling of waste concrete. The purpose is to provide a method for constructing the foundation of a home that will become a reality.

[Means to solve the problem]

The method for constructing a foundation for a house according to the present invention includes the steps of: erecting strut members at positions on a construction site corresponding to the positions of pillars of a building to be built above the foundation; connecting these strut members with connecting members made of precast concrete; , formwork is placed on both sides of the lower part of the support member and the connection member, concrete slurry is poured into the formwork, and construction work for constructing the building on the support member and the connection member is carried out using the concrete slurry. It is characterized by being carried out at the same time as the curing of the body.

The construction work for constructing the building may be started after pouring the concrete slurry into the formwork, but it may also be started after the formwork placement work and before the slurry pouring work, or even before the formwork placement work. You can start.

[Effect]

When the respective support members are connected by the connecting members, the positions of the support members are determined relative to each other and the construction work of the building can be started on these support members and the connecting members. The weight of the building during this construction work is supported by the support members.

Therefore, there is no need to wait until the concrete slurry poured into the formwork solidifies before starting the building construction work, thereby shortening the work period at the construction site.

In addition, when concrete slurry is poured into the formwork, this slurry enters the underside of the connecting member made of precast concrete, so even if the waste concrete has not been leveled, it is considered waste concrete. Connecting members can be reliably connected.

〔Example〕

An embodiment of the present invention will be described below based on the accompanying drawings.

FIG. 1 shows an overall schematic diagram of a house 1 to which this embodiment is applied, and in this figure, the foundation 2 of the house 1 is shown in the state at the start of the construction work of a building 3 to be erected on the foundation 2. ing.

In the housing l according to this embodiment, the building 3 has a plurality of housing units 4.
12 shows the frame 5 of the housing unit 4. The frame 5 is constructed by connecting the upper and lower ends of four pillars 6 at the four corners with four upper beams 7 and four lower beams 8, and the frame 4 has wall materials, ceiling materials,
Flooring materials and the like are installed in a factory, and the building 3 of the house 1 is constructed using the unit construction method by combining a plurality of housing units 4, which have been produced in advance at the factory, at the construction site as shown in FIG. 13.

The foundation 2 shown in FIG.
13. Each pillar member 9, 10.11 is arranged at a position on the construction site corresponding to the position where the pillar of the building 3, that is, the pillar 6 of the housing unit 4 in this embodiment is arranged. Among these, the first support member 9 is arranged under the part where multiple pillars 6 are not gathered together, specifically under the protruding corner part of the building 3 where there is only one pillar 6. , the second support member 10 has two pillars 6
The third pillar member 11 is arranged under a part where four pillars 6 are gathered together, specifically, under a part where two housing units 4 are adjacent to each other in the front and back or left and right. The lower part of the housing unit 4, specifically the 4 housing units
are placed below the adjacent parts front to back and left and right.

Each of the first and second connecting members 12.13 is a support member 9.10.
．． 11 to each other, and among these, the first connecting member 12 is connected to the outer wall portion 2A of the foundation 2.
The second connecting member 13 constitutes the middle wall portion 2B of the foundation 2. Further, these connecting members 12 and 13 are made of precast concrete manufactured in advance at a factory.

FIG. 2 shows the first support member 9. This support member 9 is made of a single prismatic member 14, and brackets 16 with bolt holes 15 are joined to two orthogonal sides, and base plates are attached to the upper and lower ends. 17, a top plate 18 is attached. Grout material 1 is applied to the top plate 18.
One sheath tube 20 filled with 9 and one level adjustment bolt 21 are attached.

FIG. 3 shows a second support member 10, which is made up of two prismatic members 14, and has the brackets 16 joined to three sides, a base plate 22 at the lower end and an upper end, and a top support member 10. A plate 23 is attached, and two sheath tubes 20 and two level adjustment bolts 21 are attached to the top plate 23, respectively.

FIG. 4 shows a third support member 11, which is made up of four prismatic members 14, and the brackets 16 are joined to two sides 180 degrees opposite each other.
A base plate 24 and a top plate 25 are attached to the lower and upper ends, and the sheath tube 20 and four level adjustment bolts 21 are attached to the top plate 25, respectively.

In the above description, each sheath tube 20 is supported by being mounted on a bracket 26 that is connected and arranged inside the prismatic member 14, as shown in FIG. 9 for the first support member 9.

FIG. 5 shows the first connecting member 12. Both ends of the connecting member 12 in the longitudinal direction are formed into thin-walled portions 12A by notches 27, and the tip surface of the thin-walled portions 12A is a 45-degree inclined surface 12B.
It becomes. A bolt hole 2 is provided in the side surface 27A of the notch 27.
A bracket 29 with 8 is provided and also a connecting member 12
A level adjustment bolt 30 is provided on the bottom surface. The nut 31 to which the level adjustment bolt 30 is screwed and the bracket 29 are joined to a reinforcing member 32 buried inside the connecting member 12.

The length of the first connecting member 12 is determined based on the distance between the pillars 6 of the housing unit 4, and the length of the first connecting member 12 is
When arranged in the longitudinal direction, the spacing between the pillars 6 is set to be the same as that between the pillars 6. If the distance between the pillars 6 is different in the front-rear direction and the left-right direction of the housing unit 4, two types of connecting members 1 are used.
Prepare 2.

FIG. 6 shows the second connecting member 13. A vertical groove 33 is formed at both longitudinal ends of the connecting member 13.
Bolt holes 3 are provided at both ends of the connecting member 13 so as to penetrate through the
4 is provided. Further, the level adjustment hole 30 is provided on the lower surface of the connecting member 13, and the nut 31 into which the level adjusting hole 30 is screwed is joined to the reinforcing material 35 buried inside the connecting member 13. There is.

The length of this second connecting member 13 is also determined based on the mutual spacing between the columns 6 of the housing unit 4, and is set so that when the plurality of connecting members 13 are lined up in the longitudinal direction, the distance is the same as the mutual spacing between the columns 6. .

Next, the construction work for foundation 2 will be explained.

A sacrificial concrete 36 (see Fig. 9) is placed at the bottom of the root cut at the construction site, and the first, second, and third support members 9, 10, and 11 are placed at predetermined positions on this sacrificial concrete 36, respectively. stand on After this, as shown in FIG.
, and the brackets 16 of these support members 9 and 10 and the bracket 29 of the connecting member 12 are connected with bolts 37 and nuts 38, as shown in FIG.
Further, the brackets 29 of adjacent connecting members 12 are connected to each other by a connect plate 39, bolts 37, and nuts 38.

As a result, the outer wall portion 2A is completed, and the connecting member 12
The thin wall portion 12A hides the support members 9 and 10 on the rear side.
are provided, the support members 9.12 are not exposed to the outside, and the outer wall portion 2A appears to consist of only the connecting member 12 made of precast concrete. In addition, the connecting member 1
Since the 45 degree inclined surfaces 12B are provided on both end surfaces of 2, the two connecting members 12 can be arranged at right angles without any gaps in the protruding corner portion where the first support member 9 is arranged, and
A plurality of connecting members 12 can also be arranged linearly in the longitudinal direction without gaps, so that the connecting members 12 can be used in common for the right-angled portion and the straight portion of the foundation 2.

As shown in FIG. 1, the second connecting member 13 constituting the middle wall portion 2B of the foundation 2 is placed between the second support member 10 and the third support member 11, with the height level being adjusted by the level adjustment bolt 30. be done. This arrangement work is performed from above, and as a result, as shown in FIG.
, the support members 10 and 11 and the connecting member 13 are connected by a nut 41. Adjacent connecting members 13 are connected to each other by connecting plates 42 and bolts 40 inserted into these vertical grooves 33.
, Nut41.

As a result of the above, all the strut members 9, 10.11 are connected to each other via the connecting members 12.13, and therefore the strut members 9. 1'0. 11 will maintain an upright state and will not fall over.

After the above work, as shown in FIG.
Formwork 43 is placed on both sides of the lower part of 1 and the connecting member 12.13. Then, the connecting material 4 is welded to the formwork 43 on both sides.
Connect with 4. In this embodiment, the formwork 43 is made of an angle material as shown in Fig. 8, and its height dimension is small, and as shown in Figs.
It encloses only the lower part of 2.13.

A slurry pouring space 45 is formed by these formworks 43, and a concrete slurry 46 is poured into this space 45 as shown in FIG.

Immediately after the pouring of the concrete slurry 46 is completed, that is, without waiting for the concrete slurry 46 to solidify, the construction work of the building 3 above the foundation 2 is started. Even if construction work on the building 3 is started before the concrete slurry 46 solidifies, the building will not collapse because all the support members 9, 10 and 11 are connected by the connecting members 12 and 13 as mentioned above. The construction work of the building 3 can be carried out while the weight of the building 3 is surely supported by the support members 9, 10, 11.

The construction work of building 3 will first begin with the construction of the housing unit 4 for the first floor.
The housing unit 4 is then gradually lowered, and the housing unit 4 is lifted up by a crane as shown in Figure 9.
While inserting the anchor member 47 projecting downward from the pillar 6 into the sheath pipe 20 filled with the grout material 19 of the pillar member 9, 10.11, the lower end of the pillar 6 is inserted into the level adjustment bolt 21. bring it into contact with. Perform this work for all first floor housing units 4, and then
is rotated to bring these housing units 4 to a predetermined height position. After this, work was carried out to connect the first-floor housing units 4 to each other, and to stack the second-floor housing units 4 on top of the first-floor housing units 4 using a crane. Perform finishing work, etc. By solidifying the grout material 19, the strut members 9, 10, 11 and the first floor housing unit 4 are connected.

By the time the construction work of the building 3 is completed, the concrete slurry 46 has solidified and the foundation 2 has been completed. After the foundation 2 is completed, as shown in FIG. 11, the outer part of the foundation 2 is covered with soil 48 generated from the root cutting work at the construction site.

As described above, according to this embodiment, the slurry pouring space 45
The construction work of the building 3 above the foundation 2 is started before the concrete slurry 46 cast in the concrete slurry 46 solidifies, and the construction work of the building 3 is carried out at the same time as the curing of the concrete slurry 46. The construction site work period can be shortened by the curing period. This makes it possible to reduce the construction cost of a house, and this effect is particularly significant in the case of unit houses whose main purpose is to shorten the construction site work period.

Further, when the concrete slurry 46 cast in the slurry casting space 45 solidifies, the waste concrete 36
and the connecting members 12.13 are connected by this concrete, and this concrete becomes the base part of the foundation 2, so there is no need to level the top surface when pouring the sacrificial concrete 36. In other words, the sacrificial concrete 36 There may be irregularities on the upper surface of the concrete 36, which improves the workability of the concrete 36.

The present invention is applicable not only to unit houses but also to houses built using conventional construction methods, including steel frames. When applied to a house using conventional construction methods, an upwardly protruding anchor member may be provided on the support member, and this anchor member may be used to connect the base plate of the iron column or the wooden foundation.

Furthermore, in the embodiment described above, the construction work of the building 3 above the foundation 2 was started after the concrete slurry 46 casting work was completed, but the construction work of this building 3 was carried out by arranging the formwork 3 and filling the slurry casting space 45. It may be started after forming the concrete slurry and before the concrete slurry pouring work.
10.11 may be started before the formwork 43 is placed, as long as it is after the connecting members 12.13 are connected.

〔Effect of the invention〕

According to the present invention, the construction work of the building above the foundation can be started before the concrete slurry solidifies, that is, before the foundation is completed, and the construction work of the building can be carried out during the foundation construction work. It will be possible to shorten the construction period for housing on site.

Further, since the work of leveling the waste concrete is not required, the workability of the waste concrete becomes better.

[Brief explanation of drawings]

Figure 1 is an overall schematic diagram of the house showing the foundation before pouring concrete slurry, and Figures 2, 3, and 4 show the first, second, and third support members shown in Figure 1. Perspective view, Figure 5,
Fig. 6 is a perspective view showing the first and second connecting members shown in Fig. 1, Fig. 7 is an enlarged plan view of the main part of the foundation, Fig. 8 is an enlarged perspective view of the same, Figs. The figure is the IX-IX line in Figure 1, x
- An X-ray sectional view, Figure 11 is a view similar to Figure 10 showing the state after concrete slurry pouring, Figure 12 is a perspective view of the frame of the housing unit that constitutes the building above the foundation, Figure 13 is a schematic overall view of a building constructed by combining the housing units shown in FIG. 12.

Claims (1)

[Claims] (1) Erect strut members at positions on the construction site that correspond to the positions of the pillars of the building to be built above the foundation, connect these strut members with precast concrete connecting members, and connect the aforementioned strut members and this connecting member. A formwork is placed on both sides of the lower part of the building, a concrete slurry is poured into the formwork, and the construction work of constructing the building on the support member and the connecting member is performed simultaneously with the curing of the concrete slurry. A housing foundation construction method characterized by: