JP2720382B2 - Method of forming independent footing foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a foundation for a building, and more particularly to a method for forming an independent footing foundation for supporting a designated portion of a building.

[0002]

2. Description of the Related Art Conventionally, when forming an independent footing foundation of this kind, a wood panel is often used as a formwork, and the working process is performed by forming a wood panel and placing concrete into the formwork. Installation, curing, and demolding of wood panels. Also, recently, in order to improve the workability of cast-in-place, a thin plate made of concrete is prepared,
This is sometimes used as a form for concrete driving.

According to the latter construction method, a demolding step, which is indispensable in a construction method using wood panels as a formwork, can be omitted, so that work can be simplified, and labor and work time can be reduced. Can be suppressed. In particular, since this concrete thin plate is a high-strength and thin-walled panel in which reinforcing materials such as glass fiber are blended, the same type assembly work as a wood panel can be performed by combining these or connecting with bolts or the like. While it can be done, it can be formed in advance using hollow prisms, etc., so it can be simply installed at the site and simple construction can be done, and the surface is excellent because birch surface etc. does not easily occur It is used for buildings that place importance on the landscape, such as columns and beams.

[0004]

However, a thin plate made of high-strength concrete is expensive, and it is difficult to use this type of foundation buried underground where improvement in appearance is not important. Therefore, in order to form an independent footing foundation, at present, many types of wood panels are used.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide an inexpensive and easy-to-install one. The gist of the invention is that a concrete rectangular frame formed by four corner members arranged on a diagonal line and a panel member connecting adjacent corner members is disposed on concrete, and the corner member is placed on the concrete. When a height adjustment rod is inserted into a vertical hole penetrating in the vertical direction and a screw connection is performed in the vertical hole, the height is adjusted after or before concrete is poured into the rectangular frame. A method of forming an independent footing foundation, characterized in that a distance between a tip of the adjusting rod and an upper surface of the waste concrete is adjusted by rotating an adjusting rod.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 to 4. In the drawings, reference numeral 1 denotes a rectangular frame having an L-shaped cross section standing at four corners. It is mainly composed of a corner member 2 and two types of long and short panel members 3A and 3B connected to the corner member 2 at both ends, all of which are formed of concrete.

Reference numeral 4 denotes a bolt insertion horizontal hole, and both upright pieces 2A. 2A are provided at desired intervals along the vertical direction. A vertical hole 5 penetrating in the vertical direction is formed in the corner 2B of the corner member 2, and an embedded nut 6 is embedded in the bottom of the vertical hole 5. .

Reference numeral 7 denotes a long hole having a long diameter in the longitudinal direction formed at both ends of the panel members 3A, 3B. The long panel member 3A is formed at a position corresponding to the lateral hole 4 formed in the second panel member 3A.
Is provided with a through hole 8 at the center thereof.

Reference numeral 9 denotes a T-shaped height adjusting rod, which has a handle 9A at the upper end and a male screw 9B at the distal end. The height adjusting rod 9 is attached to the corner of the corner member 2. The height adjusting rod 9 is vertically inserted into the vertical hole 5 formed in the vertical hole 2B by screwing the male screw 9B at the distal end thereof and the nut 6 in the vertical hole 5 by rotating the nut. It is configured to slide vertically in the hole 5.

Reference numeral 10 denotes a fastening rod having a spiral groove 10A formed on the outer periphery thereof and having a head portion 10B at a base end thereof, which is opposed between the long and opposite panel members 3A, 3A of the frame 1. The fastening rod 10 is inserted into the through holes 8, 8 from the front end, and the front end portion penetrated from the panel member 3 </ b> A is
The two panel members 3A, 3A are fastened to each other by tightening with the nut 12 through the. In the figure, 13 is a bolt and 14 is a nut.

Next, the construction method of the present invention will be described. First, a rectangular frame 1 is assembled. In this case, as shown in FIG. 2, four corner members 2 are arranged at a predetermined interval on a diagonal line. The two long and short panel members 3A, 3 are placed between the corner members 2, 2 which are arranged and raised, respectively.
B is disposed on each of the long side and the short side.

The elongated holes 7 formed at both ends of each of the panel members 3A and 3B are aligned with the lowermost horizontal hole 4 of the corner member 2, and the bolt 13 inserted into the common holes 7 and 4 is inserted into the nut 14 In this case, as shown in FIG. 3, the panel members 3A and 3B are moved in the left-right direction along the long holes 7 to adjust the fixing positions of the corner member 2 and the panel members 3A and 3B. It is fixed to the bottom of the member 2.

Further, by repeating the same operation as described above, the panel members 3A, 3A,
3B are mounted on the long side and the short side, respectively, to form a rectangular frame 1 as shown in FIG. In this case, when the panel members 3A and 3B are formed of relatively thin ordinary concrete, the panel members 3A and 3B may be deformed or damaged due to the horizontal load due to the concrete K to be described later. At least the long side panel members 3A, 3A, which are weak in strength, are fastened to each other by the fastening rod 10 by the above-described means.

After the assembly of the frame 1 is completed as described above and formed into the state shown in FIG. 1, the frame 1 is placed on a discarded concrete G previously laid at a position where a footing foundation is to be formed. I do. Next, concrete K is poured into the frame 1 so that the upper surface D of the placed concrete K is flush with the upper end surfaces of the panel members 3A and 3B located at the uppermost level. The surface is leveled by, for example, forming a horizontal surface.

In this case, the work of leveling the surface of the cast concrete K is performed by the panel members 3A and 3B located at the uppermost level.
The frame 1 may not be set horizontally on the discarded concrete G because the upper end surface of the frame 1 is used as a guide standard. In this case, there is a possibility that the upper surface D of the completed footing foundation may not be a horizontal surface, and therefore, before or after the concrete K is cast and before the cast concrete K is solidified, the frame Adjust to make 1 horizontal.

That is, as shown in FIG. 4, a height adjusting rod 9 is inserted from above into the vertical hole 5 of the corner member 2 from above, and the handle 9A is turned to rotate the handle 9A. When the male screw 9B of the portion is screwed with the nut 6 in the vertical hole 5, the tip of the height adjusting rod 9 is made to protrude from the bottom surface of the vertical hole 5. As a result, the tip of the height adjusting rod 9 collides with the upper surface G1 of the discarded concrete G, and the reaction force causes the frame 1
Can be lifted upward, so that this
The frame 1 is set in a horizontal state by using the corner members 2 at several places.

After the concrete K has hardened,
By rotating the height adjusting rod 9 in the opposite direction to the above, the screw between the male screw 9B at the tip and the nut 6 in the vertical hole 5 is released, and the height adjusting rod 9 is removed from the inside of the vertical hole 5. Pull out. As a result, the side wall surface is surrounded by the concrete frame 1 and an independent footing foundation integrally formed with the frame 1 is constructed. Note that the fastening rod 10 is connected between the panel members 3A.
In this case, the fastening rod 10 serves as a reinforcing bar, and the structural strength of the footing foundation is improved.

[0018]

According to the method of forming an independent footing foundation according to the present invention, as described above, concrete formed by four corner members arranged diagonally and panel members connecting adjacent corner members together. A rectangular frame made of stainless steel is placed on concrete, and a height adjustment rod is inserted into a vertical hole penetrating in a vertical direction of the corner member, and screw connection is performed in the vertical hole. After or before the concrete is poured into the rectangular frame, the height adjusting rod is rotated to adjust the distance between the tip and the upper surface of the discarded concrete, so that there is no demolding work. Therefore, the operation can be simplified, and the frame can be adjusted horizontally by a simple operation, so that a high-precision footing base surface can be formed. Further, by forming a structure in which the opposed panel members are fastened with a fastening rod at the center thereof, a panel member formed of a thin plate made of ordinary concrete that can be manufactured at low cost can be used, and the construction cost can be reduced. There are various effects that can be done.

[Brief description of the drawings]

FIG. 1 is a perspective view of a frame used in the present invention.

FIG. 2 is a perspective view showing a frame assembly process.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 2 Corner member 2A Standing piece 3A Panel member 3B Panel member 4 Side hole 5 Vertical hole 6 Embedded nut 7 Long hole 8 Through hole 9 Height adjustment rod 9A Handle 9B Male screw 10 Fastening rod 10A Helical groove 10B Head 11 Plate 12 Nut 13 Bolt 14 Nut K Cast concrete D Same as above G Discarded concrete G1 Same as above

Claims (2)

(57) [Claims] 1. A concrete rectangular frame formed by four corner members arranged on a diagonal line and a panel member connecting adjacent corner members to each other, the concrete rectangular frame body is disposed on concrete, and the corner is placed on the concrete. When a height adjustment rod is inserted into a vertical hole penetrating in the vertical direction of the member and a screw connection is performed in the vertical hole, after or before concrete is poured into the rectangular frame, A method for forming an independent footing foundation, comprising rotating a height adjusting rod to adjust a distance between a tip end thereof and an upper surface of the waste concrete. 2. The method for forming an independent footing base according to claim 1, wherein the opposed panel members are fastened by a fastening rod at a central portion thereof.