JP2013170420A - Foundation forming method of architectural structure and foundation of architectural structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation forming method of an architectural structure, by which cost and labor can be reduced and the horizontality of a top face of the foundation can be measured before the completion of the foundation, and by which even an unskilled person can make the top face horizontal.SOLUTION: In an adjustment step, top faces of H-shaped steels 25, 27 are adjusted to be horizontal by turning a handle 17 of a jack 11 to lift and lower a flat plate 19. In a jack embedding step, concrete 37 is poured into a recess 3 after the adjustment step to make a state that the concrete covers the lower end parts of the H-shaped steels 25, 27. Namely, the jack 11 and the lower end parts of the H-shaped steels 25, 27 are in a state of being embedded in the concrete 37. Thus, the jack 11 is embedded in the concrete 37 to be a component of the foundation 1, and therefore it is unnecessary to remove the jack 11 and cost and labor can be significantly reduced.

Description

  The present invention relates to a building foundation forming method and a building foundation, and more particularly to a building foundation forming method and a building foundation capable of easily and reliably performing horizontal adjustment of the upper surface of the foundation.

As described in Patent Document 1, when building the foundation of a building, a recess is formed by digging a hole in the ground, a crushed stone is laid on the bottom surface of the recess, and discarded concrete is laid on this, Next, the formwork is assembled and the concrete is poured after the reinforcing bars are placed in the formwork.
Since the upper surface of the foundation of the building is required to be horizontal, the formwork needs to be manufactured with considerably high accuracy.

JP 2011-214290 A

However, there is a problem that it takes cost and labor to construct a formwork.
Moreover, it is difficult to reliably measure whether the upper surface of the foundation is horizontal unless the poured concrete is solidified. For this reason, after the foundation is manufactured, it turns out that the upper surface is not horizontal, and the manufactured foundation is sometimes broken and remade.
Furthermore, in recent years, there is also a problem that the number of mold carpenters with skilled techniques has decreased.
The present invention has been made by paying attention to the above-mentioned conventional problems, can greatly reduce the cost and labor, can measure whether the upper surface is horizontal before completion of the foundation, and is skilled. The purpose is to provide a building foundation forming method and a building foundation capable of ensuring that the upper surface is level evenly.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 includes a recess forming step of digging the ground to form a recess in the ground, and a discarded concrete forming a discarded concrete portion on the bottom of the recess. Part forming step, jack installing step of installing a plurality of jacks on the abandoned concrete part, base installing step of installing and connecting a base to the lifting part of the jack, and lifting and lowering part by operating the jack And adjusting the base so that the upper surface of the foundation is horizontal, and a jack embedding process in which concrete is poured into the recess after the adjustment process is finished and the jack is embedded in the concrete. It is a method for building foundations.

  The invention of claim 2 is a building foundation forming method according to claim 1, characterized in that it is embedded in concrete including the lower end of the base during the jack burying process. is there.

  The invention according to claim 3 is the building foundation forming method according to claim 1 or 2, wherein after the jack burying process is finished, a reinforcing bar is disposed in a region surrounded by a foundation, and the reinforcing bar is made into concrete. It is the foundation formation method of the building characterized by including the reinforcing bar embedding process to embed.

  The invention of claim 4 is the foundation of a building formed by the building foundation forming method according to any one of claims 1 to 3, wherein the foundation is a steel frame. is there.

  The invention of claim 5 is the foundation of a building according to claim 4, wherein the steel frame is H-shaped steel.

According to the building foundation forming method and building foundation of the present invention, costs and labor can be greatly reduced.
Further, the level of the upper surface can be measured before the foundation is completed, and even if it is not a skilled person, the upper surface can be surely leveled.

It is a perspective view for demonstrating the recessed part formation process of the foundation formation method of the building which concerns on embodiment of this invention. It is sectional drawing for demonstrating the recessed part formation process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the discarded concrete part formation process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the jack installation process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the foundation installation process of the foundation formation method of the building of FIG. It is a perspective view for demonstrating the foundation installation process of the foundation formation method of the building of FIG. It is a figure for demonstrating the connection structure of H-shaped steel as a foundation in the foundation formation method of the building of FIG. It is a perspective view for demonstrating the connection structure of the H-shaped steel as a base in the building foundation formation method of FIG. 1, and the raising / lowering part of a jack. It is sectional drawing for demonstrating the adjustment process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the jack embedding process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the bar arrangement process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the reinforcement embedding process of the foundation formation method of the building of FIG. It is sectional drawing for demonstrating the process of mounting and fixing the box part which comprises a garage on the foundation of the building manufactured by the foundation formation method of the building of FIG. It is a figure for demonstrating the process of mounting and fixing a roof member on the box part which comprises a garage on the foundation of the building manufactured by the building foundation formation method of FIG. It is a figure for demonstrating the process of mounting and fixing a roof member on the box part which comprises a garage on the foundation of the building manufactured by the building foundation formation method of FIG. It is a perspective view of the garage provided with the foundation of the building manufactured by the foundation formation method of the building of FIG. It is a figure for demonstrating the connection structure of H-shaped steel in case the foundation of this invention becomes a length more than fixed.

A building foundation forming method according to an embodiment of the present invention and a building foundation 1 constructed by this method will be described with reference to the drawings. In the present embodiment, the building is a garage 2.
(Recess formation process)
As shown in FIGS. 1 and 2, a rectangular recess 4 is formed by digging the ground G, and a frame-shaped recess 3 is formed by deeply digging the outer periphery of the recess 4, and is surrounded by the recess 3 in the recess 4. A rectangular convex portion 5 is formed in the region. The convex portion 5 is one step lower than the ground G.

(Discarding concrete part formation process)
As shown in FIG. 3, the concrete is poured after the crushed stone 7 is laid in the concave portion 3, and the upper surface of the concrete is finished as flat as possible. Then, the concrete is solidified by leaving it for a predetermined time to form a discarded concrete portion 9.

(Jack installation process)
As shown in FIG. 4, the four jacks 11 are discarded and installed on the concrete portion 9. One jack 11 is arranged at each of the four corners of the recess 3. The jack 11 is a commercially available so-called screw jack, and is fixed to a base portion 13, a female screw portion 15 to the base portion 13, a male screw portion 16 to be screwed to the female screw portion 15, and an upper end portion of the male screw portion 16. And a flat plate 19 as an elevating part fixed to the upper end of the male screw part 16. Bolt insertion holes 23 are formed at the four corners of the flat plate 19. The jack 11 is made of steel and is subjected to rust prevention treatment.

(Base installation process)
As shown in FIGS. 5, 6, and 7, H-shaped steels 25 and 27 that are steel frames are used as the foundation. A total of four long dimension H-shaped steels 25 and two short dimension H-shaped steels 27 are used. The H-shaped steel 25 is composed of a connecting plate 25a and a pair of both side plates 25b connected via the connecting plate 25a, and the H-shaped steel 27 is a pair of both sides connected via the connecting plate 27a and the connecting plate 27a. It is comprised by the board 27b. Further, reinforcing ribs 25c are formed at both ends of the H-shaped steel 25, and the reinforcing ribs 25c are provided on both the outer surface side and the inner surface side of the connecting plate 25a.
A plurality of bolt insertion holes 29 are formed at both ends of the side plates 25b and 27b. A plurality of support bars 28 are provided on one side surface of the H-shaped steel 25.

A connection structure of the H-shaped steel 25 and the H-shaped steel 27 is shown in FIGS.
The end surface of the H-shaped steel 27 and the end of the inner surface of the H-shaped steel 25 are joined, and the coupling plate 32 is provided across the connecting plate 27 a of the H-shaped steel 27 and the reinforcing rib 25 c of the H-shaped steel 25. Bolt insertion holes (not shown) are formed in the coupling plate 32. Bolts are inserted into the bolt insertion holes, the bolt insertion holes of the connecting plate 27a, and the bolt insertion holes of the reinforcing rib 25c, and the nuts screwed into the bolts. Are tightened to connect the H-shaped steel 25 and the H-shaped steel 27. In this way, the end face of the H-shaped steel 27 and the H-shaped steel 25 are connected to form a rectangular frame.

Both ends of the H-shaped steel 25 are installed on the flat plate 19 of the jack 11 so that the H-shaped steels 25 and 27 assembled in a frame shape are supported by the jack 11.
Then, the bolt 30 is passed through the bolt insertion hole 23 of the flat plate 19 and the bolt insertion holes 29 at both ends of the both side plates 25 b of the H-shaped steel 25, and a nut 33 is screwed into the projecting portion of the bolt 30 and tightened.

(Adjustment process)
As shown in FIG. 9, the level 35 is placed on the upper surfaces of the H-shaped steels 25 and 27, and the flat plate 19 is moved up and down by turning the handle 17 of the jack 11 while looking at the level 35, so that the upper surfaces of the H-shaped steels 25 and 27 are horizontal. Adjust so that At this time, the position of the level 35 placed on the H-shaped steels 25 and 27 is appropriately changed, and adjustment is performed so that the entire upper surfaces of the H-shaped steels 25 and 27 are horizontal.
In this manner, the handle 17 of the jack 11 is operated, the flat plate 19 is moved up and down, and the level of the upper surfaces of the H-shaped steels 25 and 27 can be measured and adjusted before the foundation 1 is completed. In addition, since the jack 11 is only operated while checking the level 35, the upper surfaces of the H-shaped steels 25 and 27 can be surely leveled even by an unskilled person.

(Jack embedding process)
After the adjustment step, the concrete 37 is poured into the recess 3 as shown in FIG. 10 so that the concrete 37 covers the lower ends of the H-shaped steels 25 and 27. That is, the jack 11 and the lower ends of the H-shaped steels 25 and 27 are embedded in the concrete 37.
Thus, since the jack 11 is embed | buried in the concrete 37 and it is set as the structural member of the foundation 1, it is not necessary to remove the jack 11, and cost and labor can be reduced significantly.

(Bar arrangement process)
After completion of the jack burying process, the rebar 39 is supported by the support bar 28 as shown in FIG.
(Reinforcing bar embedding process)
After completion of the bar arrangement process, concrete is poured into the recess 4 as shown in FIG. The top concrete portion 41 is finished so that the top surface is flat. In addition, about half of the height directions of the H-shaped steels 25 and 27 are embedded in the upper surface concrete portion 41.

13-15, the code | symbol 43 shows a box part, and this box part 43 has the lower surface open | released and has the opening part 43a in the front surface. The box part 43 is comprised with the corrugated steel plate etc., and conveys what was assembled in the factory to a construction site.
After the upper surface concrete portion 41 is solidified as shown in FIGS. 13 and 14, the lower end portion of the box portion 43 is placed on the side plates 25 b and 27 b on the upper side of the H-shaped steels 25 and 27. Then, the upper side plates 25b, 27b on the upper side of the H-shaped steels 25, 27 and the lower end of the box part 43 are connected and fixed by bolts and nuts (not shown).

Next, as shown in FIGS. 14 and 15, the roof member 47 is attached to the top plate 45 of the box portion 43 to complete the garage 2. The opening 43a serves as an entrance / exit of the automobile.
As described above, according to the building foundation forming method and building foundation 1 of the present invention, the foundation cost and labor can be greatly reduced, the level of the upper surface can be measured before the foundation is completed, and it is skilled. Even if it is not a person, it becomes possible to make the upper surface level horizontally.

As shown in FIG. 17, when the foundation has a certain length or longer (for example, 12 m), the H-shaped steels 25 (27) are connected to each other via the coupling plate 40.
That is, the coupling plate 40 is provided over the connecting plate 25a (27a) of the H-shaped steel 25 (27), and the bolt 30 is inserted into the bolt insertion hole of the connecting plate 40 and the connecting plate 25a (27a). The screwed nuts are tightened, and the H-shaped steels 25 (27) are connected to each other through the coupling plate 40.
Further, the jack 11 is provided below the both side plates 25b (27b), and the flat plate 19 of the jack 11 is attached to the side plates 25b (27b) of the H-shaped steel 25 (27) to be connected.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the said embodiment, although the garage was shown as a building, this invention is not limited to this, You may apply to a house etc. as a building.

In the above embodiment, two jacks are used for one H-shaped steel. However, the present invention is not limited to this, and a jack is disposed in the middle of the H-shaped steel to form one H-shaped steel. However, more than two jacks may be used.
In the said embodiment, although H-shaped steel as a steel frame material was shown as a foundation, this invention is not limited to this, You may use steel frame materials, such as prismatic materials other than H-shaped steel, and other than a steel frame material Wood or the like may be used.

  The building foundation forming method of the present invention, the building foundation has the potential to be in the construction industry.

DESCRIPTION OF SYMBOLS 1 ... Foundation of building 2 ... Garage 3 ... Frame-shaped recessed part 4 ... Rectangular recessed part 5 ... Convex part 7 ... Crushed stone 9 ... Discarded concrete part 11 ... Jack 13 ... Base part 15 ... Female thread part 16 ... Male thread part 17 ... Handle 19 ... Flat plate 23 ... Bolt insertion hole 25, 27 ... H-shaped steel 25a, 27a ... Connecting plate 25b, 27b ... Both side plates 25c ... Reinforcement rib 28 ... Support rod 29 ... Bolt insertion hole 32, 40 ... Connecting plate 30 ... Bolt 33 ... Nut 35 ... Level 37 ... Concrete 39 ... Reinforcing bar 41 ... Top concrete part 43 ... Box part 43a ... Opening 45 ... Top plate 47 ... Roof member G ... Ground

Claims (5)

  A step of forming a recess in the ground by digging the ground; a step of forming a discarded concrete portion forming a discarded concrete portion on the bottom surface of the recess; a step of installing a jack for installing a plurality of jacks on the discarded concrete portion; A base installation step in which a base is installed and connected to the lifting / lowering portion of the jack, an adjustment step in which the lifting / lowering portion is operated by operating the jack to adjust the upper surface of the base to be horizontal, and after the adjustment step is completed A method for forming a foundation of a building, comprising: a step of burying concrete into the concave portion and a step of burying the jack in the concrete.   The building foundation forming method according to claim 1, wherein the building is embedded in concrete including a lower end portion of a base during a jack burying step.   The building foundation forming method according to claim 1 or 2, wherein after the jack burying process, a reinforcing bar is disposed in a region surrounded by a foundation, and a reinforcing bar is embedded in the concrete. A building foundation forming method characterized by comprising.   A building foundation formed by the building foundation forming method according to any one of claims 1 to 3, wherein the foundation is a steel frame.   5. A building foundation according to claim 4, wherein the steel frame is H-shaped steel.

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