JP2006083564A - Foundation constructing method, pressurizing device for use in the constructing method, and continuous footing or mat foundation constructed by the constructing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foundation constructing method according to which leveling of a rise portion upper surface of a foundation such as a continuous footing or a mat foundation, and densification of the foundation are simultaneously implemented, construction procedures are simplified, and construction costs and the number of days necessary for the construction are drastically reduced, and to provide a pressurizing device for use in the constructing method, and the continuous footing or the mat foundation constructed by the method. <P>SOLUTION: According to the foundation constructing method, level concrete is placed on the ground surface, and base concrete is placed on an upper surface of the level concrete, followed by forming a rise portion on the base concrete. Then the concrete is pressurized until the rise portion upper surface becomes equal to a desired level, to extract water and air present in the concrete in the rise portion, and when the upper surface reaches the predetermined level, pressurizing work is terminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a foundation construction method capable of accurately leveling a fabric foundation or a solid foundation of a small-scale building, a pressure device used in the construction method, and a cloth foundation or a solid foundation manufactured by the construction method. About.

As is well known, there are cloth foundations and solid foundations for small-scale buildings including houses, and these foundations are composed of base concrete and rising concrete on the upper surface of level concrete.

And this foundation work has been made by a general construction method with a wooden formwork made by a base specialist such as a craftsman using auxiliary bars and veneers, and a forming formwork such as steel.

However, the formwork is large and very heavy, and it takes time to carry out maintenance such as repair, nailing, cleaning, and oiling after carrying in to the site and removing the mold. The current situation is that it takes a lot of labor for the technicians.

Here, the conventional foundation construction process will be explained. Land territory, how to spend, sumi-in, moat flooring, split-grinding abandoned concrete, curing, sumi-in, foundation reinforcement, base formwork, base concrete , Curing, Inking, Standing formwork, Standing concrete casting, Curing, Formwork dismantling, Rolling with backfilling soil floor, Concrete casting, Top level ink, Top edge mortar, Underfloor ventilation hole installation, Finishing makeup It requires a very large number of processes such as mortar coating, and requires many skilled workers, long days and many construction materials.

Moreover, although it is a part now, a forming mold, a driving mold, etc. are developed and researched, and it is also possible to complete in five days.

By the way, the most important qualities in such a foundation include, firstly, that the leveling of the top end face of the foundation rising portion is made accurate and the density of the whole foundation is increased.

In the first point, conventionally, as shown in Patent Document 1, for example, using a measuring instrument called a leveler, the leveler is set at a predetermined height in the formwork, and then the concrete is placed in the formwork. The current situation is that the level of the top is set by placing it inside.

JP 2003-129490 A

As for the second point, a method is adopted in which a vibrator is inserted into the placed concrete to give vibration, and excess water and air are drawn to increase the density to prevent cracking.

However, in the above-described conventional foundation construction method, as described above, the first construction work and the second construction work are performed separately, so the construction process is complicated, and each construction work In addition to the need for skilled workers, the construction days also become longer, which is a factor that increases construction costs.

  The present invention has been developed in view of the current situation, and the object of the invention is to achieve the leveling of the top edge of the foundation of a foundation such as a fabric foundation or a solid foundation and the densification of these foundations at the same time. The foundation construction method that can simplify the construction process and significantly reduce the construction cost and the number of construction days, the pressure device used in the construction method, and the fabric foundation manufactured by the construction method Or it is going to provide a solid foundation.

  In order to achieve the above object, in the foundation construction method according to claim 1, level concrete is placed on the leveled ground surface, and a base concrete formwork is used on the upper surface of the level concrete. Concrete is placed, and the base concrete is embedded with a lower portion of an anchor bolt for supporting the rising portion so that the tip portion extends vertically, and after the base concrete is hardened, the base concrete is After standing up the formwork for the rising part using the concrete surface, and then placing concrete in the above-mentioned form for the rising part up to a height above the desired top part level, the rising part The concrete in the rising part formwork is pressed from above the top end surface to extract water and air mixed in the concrete in the portion, and the top end surface is set at a predetermined level. Characterized in that to stop the pressing action industries when it reaches the.

Moreover, in invention of Claim 2, the construction method of the foundation of Claim 1 is made a technical premise, The said form part for standing | starting part is standingly arranged in the substantially center part of the base concrete, and is a cross section. A fabric base having a substantially convex shape is generated.

Furthermore, in the invention according to claim 3, based on the technical premise of the foundation construction method according to claim 1, the riser formwork is erected at one end of the base concrete. Thus, a solid foundation having a substantially L-shaped cross-section is generated.

In the invention according to claim 4, the foundation construction method according to any one of claims 1 to 3 is a technical premise, and the rising portion is formed on an inner surface of the rising portion formwork. The lowering restricting body that blocks the applied pressure from acting on the height position of the top end face is detachable.

In the invention according to claim 5, when the foundation construction method according to any one of claims 1 to 4 is carried out, the concrete in the rising part formwork is added from above the rising part top end surface. The pressurizing device for pressing comprises a support member assembled in a gate shape, a jack device disposed at a lower part of the ceiling of the support member, and a seat body disposed on the top end surface of the rising portion. The lower end portion of the jack device extends to apply a predetermined pressing force to the seat body, so that the seat body pressurizes the concrete in the rising portion formwork and extracts water and air mixed in the concrete. It exists in the pressurization apparatus used for the construction method of the foundation characterized by this.

In the invention according to claim 6, when the foundation construction method according to any one of claims 1 to 4 is carried out, the concrete in the rising part formwork is added from above the rising part top end surface. The pressurizing device for pressing includes a support member assembled in a gate shape, weight holding means suspended from a lower part of the ceiling of the support member, weights mounted on the weight holding means so as to be movable up and down, and the weights And a pressurizing body that is in contact with a seat disposed on the top end surface of the rising portion, and the load of the weight is passed through the pressurizing body. It is in the pressurization apparatus used for the foundation construction method characterized by drawing out the water and air which are mixed in the concrete in the standing part formwork by making it act on the said seat.

In the invention described in claim 7, the pressurization device used in the foundation construction method described in claim 5 or claim 6 is a technical premise, and the seat body has an outer peripheral end portion thereof. It is characterized in that a gap is formed between the upper part and the rising part formwork.

In invention of Claim 8, the pressurization apparatus used for the construction method of the foundation in any one of Claim 5 thru | or 7 is made into a technical premise, and there are many drainage in the said seat. The hole is formed through or formed of a porous material.

The invention according to claim 9 is based on the technical premise that the pressurizing device used in the foundation construction method according to any of claims 5 to 8 is provided, and the anchor bolt It is characterized in that it is mounted on the upper end portion of the upper and lower portions so as to be movable up and down.

In the invention described in claim 10, the pressure device used in the foundation construction method described in any one of claims 5 to 9 is used. It exists in the fabric foundation characterized by having been produced | generated by the construction process of the foundation in any one.

In the invention described in claim 11, the pressurizing device used in the foundation construction method described in any of claims 5 to 9 is used. It is in the solid foundation characterized by having been produced | generated by the construction process of the foundation in any one.

In the foundation construction method according to claim 1, level concrete is placed on the leveled ground surface, concrete is placed on the upper surface of the level concrete using a base concrete formwork, Under the base concrete, the lower part of the anchor bolt for supporting the rising part is embedded so that the tip part extends in the vertical direction. After the base concrete is hardened, the base concrete surface is used to stand up. Standing up the formwork for the part, and then placing the concrete in the above-mentioned form for the rising part up to the height of the desired rising part top end level, then the rising part mold from above the rising part top end surface Pressurize the concrete in the frame to extract water and air mixed in the concrete in the section, and when the top end surface reaches a predetermined level, Since it is characterized by canceling work, it is possible to achieve the leveling of the top of the foundation and increase the density of these foundations at the same time, simplify the construction process, and reduce the construction cost and the number of construction days. It can be greatly reduced.

Moreover, in invention of Claim 2 and Claim 10, in the construction method of the foundation of Claim 1, the said standing part formwork is standingly arranged in the approximate center part of the base concrete, and is a cross section. Since it is possible to generate a fabric foundation having a substantially convex shape, it is possible to simultaneously achieve the leveling of the rising edge of the fabric foundation and the densification of these foundations, simplify the construction process, and Construction cost and construction days can be greatly reduced.

Furthermore, in invention of Claim 3 and Claim 11, in the construction method of the foundation of Claim 1, the said standing part formwork is standingly arranged in either one end part of base concrete. Since a solid foundation having a substantially L-shaped cross-section can be generated, leveling of the top of the solid foundation and densification of these foundations can be achieved simultaneously, simplifying the construction process, and The construction cost and the construction days can be greatly reduced.

In the invention according to claim 4, a lowering restricting body that blocks the applied pressure from acting on the height position of the top end surface of the rising portion can be inserted into and removed from the inner surface of the rising portion formwork. Accordingly, the level of the top end of the foundation can be leveled with high accuracy.

In the invention according to claim 5 and claim 6, when the foundation construction method according to any one of claims 1 to 4 is carried out, the inside of the rising part formwork from above the rising part top end surface. Since the pressurizing device for pressurizing the concrete is configured to be performed by a press device using a jack device or a weight, the pressurizing device structure is very simple, and assembly and disassembly work is easy, Since a desired pressure can be easily obtained, workability can be greatly simplified. As the jack device, a screw type jack device or a fluid pressure type jack device having a known configuration can be used.

In the invention according to claim 7, the seat body is formed so that a gap is formed between the outer peripheral end portion and the rising portion formwork. Excess water is drained from the gap while pushing out air, improving the density of concrete, preventing cracks after drying, and eliminating the need for repair work and maintenance costs after completion of construction. The effect is great.

In the invention according to claim 8, drainage by pressurization can be smoothly performed by forming a lot of drainage holes through the seat body or by forming it with a porous material.

In the invention according to claim 9, the seat body is configured to be mounted on the upper end portion of the anchor bolt so as to be vertically movable. By configuring the seat body descending by pressure to be regulated by the nut, the nut can act as a descending regulation body as defined in claim 4, so that the configuration can be further simplified.

Hereinafter, the present invention will be described in detail based on Example 1 shown in the accompanying drawings.

FIG. 1 is an explanatory view showing a production process of a base concrete of a foundation according to Example 1 of the present invention, FIG. 2 is an explanatory view showing a process of manufacturing a fabric foundation with the foundation according to Example 1, and FIG. FIG. 4 is an explanatory view showing an arrangement state example of the pressurizing device used in the first embodiment.

As shown in FIG. 1, in the foundation construction method according to the first embodiment, first, level concrete 2 is placed on the ground surface 1 that has been leveled, and the upper surface of the level concrete 2 is used for base concrete. Concrete is cast using a mold (not shown) to form a base concrete 3, and the level concrete 2 and the base concrete 3 support the rising portion 5 shown in FIGS. 2 and 3. The lower part of the anchor bolt 4 is buried, and the tip part 4A is erected so as to extend in the vertical direction.

After the base concrete 3 is hardened, the upper surface of the base concrete 3 is used to form the frame materials 6 and 6 for the rising portion 5 (see FIG. 4). Established).

Next, the concrete is placed in the mold materials 6 and 6 for the rising portion 5 to a height equal to or higher than a desired rising portion top end level H, and then the rising portion mold is formed from above the rising portion top end surface 5A. The concrete in the frame members 6 and 6 is pressurized to extract water and air mixed in the concrete in the part.

This pressurizing operation is stopped when the top end surface 5A reaches a predetermined level. By this work, it is possible to simultaneously achieve the leveling of the rising edge top end surface 5A of the foundation and the high density of the foundation, simplify the construction process, and greatly reduce the construction cost and the number of construction days.

In addition, when the said base concrete 3 hardens | cures, when the said standing part formwork materials 6 and 6 are erected in the approximate center part of the base concrete 3, as shown in FIG. Shaped fabric foundation can be produced.

Further, after the base concrete 3 is hardened, when the rising portion formwork materials 6 and 6 are erected at either one end portion of the base concrete 3, as shown in FIG. A substantially L-shaped solid foundation can be generated.

By the way, in the first embodiment, the lowering that blocks the applied pressure from acting on the inner side surfaces of the rising portion formwork materials 6 and 6 below the height position of the rising portion top end surface 5A. By mounting the required number of stoppers 6A, which are restrictors, so as to be insertable / removable, the leveling of the rising end top end surface 5A of the foundation can be performed with high accuracy. Of course, in the present invention, instead of the stopper 6A, a lowering restricting body can be constituted by a nut 6N screwed into an upper end portion of the anchor bolt 4 described later. In this case, the seat body 16 to be described later can be loosely fitted to the upper end portion 4A of the anchor bolt 4 so that the nut 6N can be screwed and locked at a predetermined height position of the anchor bolt 4. The lowering below the set height of the seat body 16 that is lowered by the pressure can be restricted by the nut 6N, and the configuration can be further simplified.

Further, when performing the foundation construction method according to the first embodiment, a pressurizing device that pressurizes the concrete in the rising portion frame members 6 and 6 from above the rising portion top end face 5A has a known configuration. Although a screw-type jack device and a fluid pressure-type jack device can be used, in this Example 1, the pressurizing device 10 shown in FIG. 4 was used.

That is, the pressurizing device 10 used in the first embodiment includes a support member 11 constructed in a gate shape, and a bolt rod 13 which is a weight holding means suspended from a lower portion of the ceiling portion 12 of the support member 11. A weight 15 mounted so as to be movable up and down via a nut 14 screwed onto the bolt rod 13, and a lower surface of the weight 15 mounted on the top end surface 5A of the rising portion 5. A pressure leg 17 in contact with the seat 16 and the weight 15 is caused to act on the seat 16 via the pressure leg 17 so as to rise up. Water and air mixed in the concrete in the part mold materials 6 and 6 can be forcibly extracted by the pressurizing action.

In this case, the seat body 16 is formed in a shape in which a gap S is formed between the outer peripheral end portion and the rising portion mold materials 6, 6. Excess water is drained from the gap S while pushing out air, improving the concrete density, preventing cracks after drying, and eliminating the need for repair work and maintenance costs after completion of construction. Can do.

Of course, when considering drainage performance, the seat 16 is not particularly illustrated, but can be formed by penetrating many drain holes or a porous material.

  In addition, since the process which is not demonstrated in particular in the said Example 1 is the same as the conventional cloth foundation construction or solid foundation construction, the detailed description is abbreviate | omitted here.

It is explanatory drawing which shows the production | generation process of the basic | foundation base concrete which concerns on Example 1 of this invention. It is explanatory drawing which shows the process of manufacturing a fabric foundation with the foundation which concerns on this Example 1. FIG. It is explanatory drawing which shows the process of manufacturing a solid foundation with the foundation which concerns on this Example 1. FIG. It is explanatory drawing which shows the example of an arrangement | positioning state of the pressurization apparatus used in this Example 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground surface 2 Level concrete 3 Base concrete 4 Anchor bolt 5 Rising part 5A Top end surface 6,6 Form material 6A for rising part Stopper (descent | fall restriction body)
6N nut (lowering regulator)
DESCRIPTION OF SYMBOLS 10 Pressurizer 11 Support member 12 Ceiling part 13 of support member Bolt rod (weight holding member)
14 Nut 15 Weight 16 Seat 17 Pressure leg

Claims (11)

  Level concrete is placed on the leveled ground surface, concrete is placed on the upper surface of the level concrete using a base concrete formwork, and anchor bolts for supporting the rising portion are provided on the base concrete. After the base concrete is hardened after burying the lower part and extending the tip part in the vertical direction, the formwork for the rising part is erected using the base concrete surface, and then the rising part After placing concrete up to a height above the desired riser top level in the formwork, press the concrete in the riser formwork from above the riser top face and mix it in the concrete in the part Water and air to be removed, and the pressurization operation is stopped when the top end surface reaches a predetermined level. Law.   2. The foundation construction method according to claim 1, wherein the rising portion mold is erected in a substantially central portion of the base concrete to generate a fabric foundation having a substantially convex cross-sectional shape.   2. The foundation construction method according to claim 1, wherein the rising portion formwork is erected at one end portion of the base concrete to generate a solid foundation having a substantially L-shaped cross section.   2. A lowering restricting body that blocks the applied pressure from acting on a height position of the top end surface of the rising portion can be inserted into and removed from an inner surface of the rising portion formwork. The foundation construction method according to claim 3.   When the foundation construction method according to any one of claims 1 to 4 is carried out, the pressurizing device that pressurizes the concrete in the rising portion formwork from above the rising portion top end surface is constructed in a gate shape. A support member, a jack device disposed at a lower portion of the ceiling of the support member, and a seat body disposed on a top end surface of the rising portion, and the lower end portion of the jack device is extended and seated. By applying a predetermined pressing force to the body, the seat presses the concrete in the rising part formwork and is used in a foundation construction method characterized by extracting water and air mixed in the concrete. Pressurizing device.   When the foundation construction method according to any one of claims 1 to 4 is carried out, the pressurizing device that pressurizes the concrete in the rising portion formwork from above the rising portion top end surface is constructed in a gate shape. A support member, a weight holding means suspended from the bottom of the ceiling of the support member, a weight mounted on the weight holding means so as to be movable up and down, a lower surface of the weight, and a lower end portion thereof being a rising portion A pressure member that contacts a seat disposed on the top end surface of the head, and by applying a load of the weight to the seat through the pressure member, the rising portion A pressurizing device used in a foundation construction method characterized by extracting water and air mixed in concrete in a formwork.   The said seat body is formed so that a space | gap part may be formed between the outer peripheral edge part and a standing part formwork, The foundation of any one of Claim 5 or Claim 6 characterized by the above-mentioned. Pressurizing device used in construction methods.   8. The base construction method according to any one of claims 5 to 7, wherein the seat body is formed with many drain holes penetrating or formed of a porous material. Pressurizing device.   The pressurizing device used in the foundation construction method according to any one of claims 5 to 8, wherein the seat body is attached to an upper end portion of the anchor bolt so as to be vertically movable.   It is produced | generated by the foundation construction process in any one of Claim 1, Claim 2, and Claim 4 using the pressurization apparatus used for the foundation construction method in any one of Claim 5 thru | or 9. Cloth base.   It is produced | generated by the foundation construction process in any one of Claim 1, Claim 3, and Claim 4 using the pressurization apparatus used for the foundation construction method in any one of Claim 5 thru | or 9. Solid basics.

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