JPH0376932A - Construction of housing foundation formed in different level - Google Patents

Abstract

PURPOSE:To make difference in level for the upper and the lower parts of a foundation by one-time placement of concrete that is made indifferent levels on both sides of a boundary made by a damming member that is installed upright in a foundation- constructing form. CONSTITUTION:A damming member 14 is made up with bend members 14a and 14b, stretching along the longitudinal direction of a form 8 and bent toward a high-position- side of a step 7, provided thereto. Then a top board member 11 in breadth larger than the form 8 is provided, and the upper end of the damming member 14 is welded to the underside thereof. Nuts 16 are provided and fixed to the member 11 and level- adjusting bolts 15 are screwed down thereto, and sheaths 4 through which anchor bolts on a housing unit side are screwed in are also attached to the member 11 through extended parts 12 and 13. Then the member 11 is placed on an A section of the form 8 and members similar to the member 11 for placing to T-shaped section of the form 8 are placed on B sections. After placing concrete to a low-position-side S2 up to a specified height, the concrete is further placed to the high-position-side S1. Thereby only one concrete placement is sufficient, and construction costs and term of works can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming stepped foundations for residential buildings.

[Background technology]

In industrialized housing, which is built by combining multiple housing units pre-produced at a factory on a construction site, for example, in order to raise the ceiling height of the living room relative to the entrance, each housing unit on the negative floor is raised to a higher height. While aligning them, it may be necessary to lower the lower end of the living room housing unit than the lower end of the entrance housing unit, and to do this, it is necessary to make the foundation of the house have a step between the top and bottom.

Also, as shown in Japanese Patent Application Laid-Open No. 55-30084,
In order to set the height of the entrance frame to the required height, it is necessary to make the foundation of the house have a step at the top and bottom.

(Problem to be Solved by the Invention) As a method of making a stepped foundation as described above, concrete slurry is poured into a formwork for forming the foundation to a low height level, and after solidification of this slurry, it is poured into a predetermined location. Furthermore, it is possible to create a foundation with upper and lower steps by pouring concrete slurry, but this would require pouring concrete slurry twice, which would increase the work period. Another problem is that the cost is high.

An object of the present invention is to provide a method for forming a stepped foundation for a house, which makes it possible to create a foundation with an upper and lower step by a single concrete slurry pouring operation.

[Means to solve the problem]

The method for forming a stepped foundation for a house according to the present invention is characterized in that a weir member is placed within a foundation forming form. Specifically, the weir member is placed vertically within a foundation forming form. Concrete slurry is poured, this concrete slurry is partitioned by a weir member, the height of the top surface of the slurry is made to vary across the weir member, and after the concrete slurry has solidified, the weir member is removed.

[Effect]

The inside of the formwork is divided by the partitioning action of the weir members, and the weir members prevent the flow of concrete slurry poured into the formwork, so a foundation with upper and lower steps can be created in one concrete slurry pouring operation. is completed.

(Example) An example of the present invention will be described below based on the accompanying drawings.

The house l shown in Fig. 1 is an industrialized house built by assembling a plurality of box-shaped housing units 2 pre-produced in a factory at a construction site, horizontally, front and back, and up and down. An anchor port 6 fixed to a sheath pipe 4 buried in the foundation 3 with a grout material 5 is provided to protrude downward.

Housing unit 2B of housing unit 2 on the first floor.

2C has long vertical dimensions in order to have a higher ceiling height than the housing unit 2A, and for this reason, the base v13 is provided with a vertical step 7.

FIG. 2 shows the overall shape of the base g13, in which steps 7 are provided in the straight section A and T-shaped section B of the base 3, and the sheath tube 4 is buried in the upper and lower parts of these steps 7. ing.

FIGS. 3 and 4 show a sheath tube setting jig 10 that is applied to the straight section A when making the foundation 3. Two extension parts 12 and 13 that extend vertically downward from 11 and have different extension lengths, and these extension parts 12.13
A weir member 14 is vertically attached to the lower surface side of the top member 11 between the two.

The top member 1X has a width dimension larger than the interval between the base forming forms 80, and has a nut 16 fixedly installed on its upper surface, as shown in FIG. 4, into which a level adjustment bolt 15 is screwed. Further, as shown in FIG. 3, a pair of openings 17 are formed in the top member [1], and the extending portions 12.13 are provided in alignment with the positions of these openings 17. These extensions 12.1
3 is formed by bending a sheet metal into a U-shape, and has flange portions L2A, 12B, and 13A at both upper ends.

13B is welded to the lower surface of the top member 11, so that the extension portion 12.13 is attached to the top member 11.

As shown in FIG. 4, the downward extension length of the extension part 12 is
3, and on the lower surfaces 12C and 13C of the extension part 12.13 to which the sheath tube 4 is attached, there are small reinforcing pieces 18.
will be permanently installed. A hole 19 is provided in the lower surface 12C13C and the small piece 18 as shown in FIG.

The weir member 14 has a length extending in the longitudinal direction of the formwork 8 as shown in FIG. It will be done. The weir member 14 has an extension portion 13 side at both ends in the length direction,
That is, the bent portion 14A bent toward the higher side of the step 7;
14B, and when the sheath tube setting jig 10 is placed in the mold 8, these bent portions 14A and 14B come into contact with the inner surface of the mold 8. Further, reinforcing ribs 14C are provided on both ends of the lower surface of the weir member 14 in the longitudinal direction.

5 and 6 show a sheath tube setting jig 2o applied to the T-shaped portion B of the foundation 3 shown in FIG. 2, and the basic structure of this sheath tube setting jig 20 is as follows: It is the same as the jig 10. That is, the sheath tube setting jig 2
0 has a horizontal top member 21 with a nut 26 on the top surface into which a level adjustment bolt 25 is screwed and inserted, and two extensions 22.2 extending downward from the top member 21 at different extension lengths.
3 and a weir member 24 provided between these extensions 22 and 23. The extension parts 22 and 23 are both formed by bending sheet metal, and the flange part 22A at one end of the extension part 22 is attached to the lower surface of the top member 21, and the other end 22B is attached to the lower surface of the weir member 24. The flange portion 23 at one end of the extension portion 23 is joined by welding.
A is a flange portion 23 at the other end on the bottom surface of the top member 21.
B are welded to the side surfaces of the weir member 24, respectively.

As shown in FIG. 5, a small piece 28 is provided on the lower surfaces 22C, 23C of the extension part 22.23 in alignment with the position of the opening 27 formed in the top member 21. A hole 29 is provided. The weir member 24 has bent portions 24A and 24B at both ends, and these bent portions 24A,
Similarly to the case of the sheath tube setting jig 1O, the bending direction of 24B is the direction of the extension portion 23 having a short downward extension length.

Next, base 1i with step 7! ! I will explain the work method for making 3.

The formwork 8 for the base W acid type is assembled by combining a large number of panels, and a concrete slurry pouring space is provided inside the formwork 8. Each sheath tube setting jig 1
0,20 extension part 12,13.22.23(7) Lower surface 1
2c, 13C, 22C.

Attach the sheath tube 4 to 23C. This sheath tube installation work involves connecting the upper end opening of the sheath tube 4 to the lower surfaces 12C and 13.
C, 22C, and 23C, and screw the long bolt 30 inserted into the hole 19.29 from above into the nut 31 fixed on the lower surface of the sheath tube 4, and screw the long sleeve bolt 30 into the upper end. This is done by tightening by rotating the part 3°A.

Next, the respective sheath tube setting jigs 1o and 20 are placed at predetermined positions in the formwork 8, and the sheath tube setting jigs 10 and 20 are
Place the top member 11.21 on the top surface of the formwork 8. As a result, the extensions 12, 13, 22° 24 and the weir members 14, 24 are inserted into the formwork 8, and the sheath tube 4 is placed in the formwork 8 in a suspended state.

By rotating the level adjustment bolt 15.25 and adjusting the amount of protrusion from the top member 11.21, the sheath tube setting jig 10, 20 is moved up and down as a whole, and the sheath tube 4 is placed in the formwork. 8 at a predetermined height position. Further, the sheath tube setting jigs 10 and 20 are positioned and locked to the formwork 8 by locking means (not shown). At this time,
Bent parts 14A, 14 at both lengthwise ends of weir member 14.24
B, 24A, and 24B are in contact with the inner surface of the formwork 8.

After that, concrete slurry is poured into the formwork 8, and the top surface of the slurry is raised. After the top surface of the slurry reaches the bottom surfaces 12C and 22C of the long downward extensions 12.22, concrete slurry pouring work is carried out as shown in Fig. 3.
This is carried out only for the predetermined location S+ shown in FIG. 5, that is, the location where the height of the foundation 3 is to be increased.

The concrete slurry poured at location SI is weir member 1.
4.24 prevents the flow to the opposite point s2, and the weir member 14.24 has bent parts 14A, 14B at both ends.
24A and 24B are provided, the weir member 14.2
The concrete slurry does not go around in the length direction of 4 and flow to the location s2.

In addition, on the lower surface side of the weir member 14.24, points S and S
t is in a communicating state, but since the concrete slurry has high viscosity, the concrete slurry does not flow to the location S by passing through the lower surface side of the weir member 14.24.

In the work of pouring concrete slurry to location S1, the upper surface of the slurry is the lower surface 13c of the extension portion 13.23.

Continue until reaching 23C.

The concrete slurry poured into the formwork 8 as described above is partitioned by the weir members 14 and 24, and the parts S1 and S,
The height of the top surface of the concrete slurry differs between the weir members 14 and 24.

After the concrete slurry has solidified to some extent, the long shaft bolt 30 is rotated by operating the screw-like operation part 30A and extracted from the sheath pipe 4, thereby separating the sheath pipe 4 and the sheath pipe setting jig 10, 20, Further, the sheath tube setting jigs 10 and 20 are taken out from the mold 8, and the extending portions 12, 13, 22, 23, and weir members 14, 24 are removed from the mold 8.

When the concrete slurry is completely solidified, '6I!' is shown in Figure 2! 3 is completed, a step 7 is formed by the weir members 14 and 24, and the sheath tube 4 is embedded in the upper and lower parts of the step 7.

According to the present embodiment described above, it is possible to create the foundation 3 with the step 7 by a single concrete slurry pouring operation, and the sheath pipe set jigs 10 and 20 equipped with the weir members 14 and 24 are used. The sheath tube 4 can be embedded in predetermined locations above and below the step 7.

In addition, in the above, the bent part 24B of the weir member 24 of the sheath pipe cent jig 20 is not necessarily necessary, and even if the bent part 24B is not provided, the location S of the concrete slurry
, to S, and, if necessary, both lengthwise ends of the weir member should be in contact with the inner surface of the formwork.

Further, in the above embodiment, since the sheath pipe 4 is embedded in the foundation 3, the weir member 1424 is attached to the sheath pipe setting jig 10. ．． 20, but if it is not necessary to embed the sheath pipe 4 in the foundation 3, make a jig with only the weir member attached to the top member, or make a device with only the weir member, and install this jig. Alternatively, the appliances may be arranged in a formwork.Also, although the above embodiment was a case of an industrialized house built by combining a plurality of housing units 2, the method according to the present invention can be applied to other ordinary houses. It can also be applied when building a stepped foundation.

〔Effect of the invention〕

According to the present invention, it is now possible to create a stepped foundation with a single concrete slurry pouring operation,
It is possible to shorten the work period and reduce costs.

\ No. Figure 1

[Brief explanation of drawings]

Fig. 1 is a partial sectional view showing a house built on a foundation, Fig. 2 is a perspective view showing the foundation, Fig. 3 is a plan view showing a sheath pipe setting jig, Fig. 4 is a front view of the same, FIG. 5 is a plan view showing another sheath tube centering jig, and FIG. 6 is a front view thereof. 1... House, 2... Housing unit, 3... Foundation,
4... Sheath pipe, 6... Anchor bolt, 7...
Step, 8... Formwork, 10.20... Sheath pipe centering jig, 11°21... Top member, 12.13, 22.2
3...Extending part. 14.24...Weir member. 1...House 2...Housing unit 3...Foundation 4...Sheath pipe 6...Anchor bolt 7...Step 8...Formwork 10.20...Sheath pipe cent jig II, 21...Top member 12.13.22.23...Extending portion 14.24...Weir member No. 4 Fig. 5 Fig. 0

Claims (1)

[Claims] (1) A vertical weir member is placed within the formwork for foundation forming, concrete slurry is poured into the formwork, and the height of the upper surface of this concrete slurry partitioned by the weir member is set to the weir member. A method for forming a stepped foundation for a house, comprising: removing the weir member after solidifying the concrete slurry to form a foundation for the house.