JPH0567749U - Concrete formwork - Google Patents

Abstract

(57) [Summary] [Purpose] There are many types of concrete formwork, as they are of a fixed size according to the dimensions of the cloth foundation. Also, the leveler that sets the level of the cloth foundation is not accurate and weak, and the work of using the mortar and level is time consuming. [Structure] It is divided into a cloth stone part form 12 and a footing part form 13, and the former is divided into upper and lower side plates 14 and 15 in the vertical direction and fastened by side plate fastening means 16 so that the upper and lower side footing frames 22 can be adjusted. , 23 are vertically adjustable by a footing frame fastening means 24, and the lower side plate 15 and the flange portions 15b, 22a of the upper footing frame 22 are horizontally adjustable by a gemstone footing frame fastening means 26. did.
The level plate 21 is provided on the through bolt 18, the upper edge of which serves as the upper surface of the cloth foundation, and this is slid along the upper edge.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a concrete formwork used for a cloth foundation which is a foundation of a house.

[0002]

[Prior art]

 FIG. 6 shows a cross section orthogonal to the longitudinal direction of the cloth foundation. The ground 1 is cut off to form a groove 2, and the bottom of the groove 2 is tamped and crushed, and the shattering stone 3 or a crushed stone of concrete of similar size is lined up, and further pressed from above. Then, the discarded concrete 4 is poured, and after solidification thereof, a concrete form (not shown) is added on the discarded concrete 4, and the concrete is cast to form the cloth foundation 5. The cloth foundation 5 includes a stone portion 6 and a footing portion 7. Usually, the width W of the stone portion 6 is larger than the width of the base 8 placed thereon.

[0003]

[Problems to be solved by the device]

 The size of the cloth foundation 5 is designed according to the load of the building on it, but the width dimension of the base 8 does not change much in the case of a wooden house, but when the load increases, the height H of the cloth foundation 5 increases, and The width F of the footing portion 7 is increased to reduce the ground load. When the width F of the footing portion is increased, the height FH of the footing portion 7 is shown, and the foot of the shear line 9 descends outward at the shear angle θ from the root of the stone portion 6 and the upper surface corner of the footing portion 7. It is desirable from the standpoint of strength that the point is aligned with the side edge of the footing portion 7 or is outside thereof. Therefore, the dimensions of concrete cloth foundation change depending on the applied load. The concrete formwork for molding the concrete cloth foundation is a fixed frame, which is constant and fixed for one cloth foundation. Only the height of is adjusted. In general, the footing part 7 is usually placed first, and the stone part 6 is next placed. However, since concrete placing is performed twice and the curing period enters between the steps, it is necessary to finish. take time. And it means that it is necessary to prepare several types of concrete formwork according to the type of cloth foundation. Therefore, as can be seen from the combination of the dimensions H, FH, and F of the cloth foundation 5, the number of types of concrete formwork increases, and it is difficult to manage due to cost and management.

In addition, in order to make the upper surface of the cloth foundation 5 horizontal when using a conventional concrete formwork, a fluid containing a so-called leveler, which has a large fluidity, is mixed with concrete after pouring the concrete. The liquid is poured to make it horizontal, and after solidification of the fluid, the base 8 is set up, or the concrete cloth foundation 5 is made horizontal using a ruler such as a spirit level, and mortar is applied. However, in the case of using a leveler, when the fluidity is poor, the horizontal plane accuracy is not good, and when the fluidity is good, the strength after solidification is small and it is easily broken and solidified. Also, when mortar is used and the level is leveled, it naturally requires a lot of man-hours. In order to provide the foundation bolts 11, conventionally, after the cloth foundation 5 is completed, the cloth foundation 5 is dug with a concrete chisel and the foundation bolts 11 are embedded with mortar, but this also takes a lot of time for the chipping work. It is conceivable to use a diamond auger bit to form a cylindrical hole instead of digging a cloth foundation with a chisel, but the cost of the consumable tool is high. It is also possible to pre-clamp the foundation bolts with a concrete formwork, but the mounting members for attaching the foundation bolts to the concrete formwork are complicated, and it is difficult to improve dimensional accuracy.

An object of the present invention is to provide a concrete formwork that is flexible to changes in various parts of the cloth foundation.

Further, the present invention aims to provide a concrete formwork capable of easily ensuring the horizontalness of the upper surface of the cloth foundation, and at the same time, to provide a concrete formwork in which the foundation bolts can be buried during concrete pouring. The purpose is to

[0007]

[Means for Solving the Problems]

 A first aspect of the present invention is a concrete formwork used for forming a concrete foundation with a footing having an inverted T-shaped cross section, the concrete formwork having different thicknesses and heights of stone blocks and heights and widths of footing portions, respectively. It is a concrete formwork that is adjustable according to the foundation.

A second aspect of the present invention is a concrete formwork used for forming a concrete foundation with footing having an inverted T-shaped cross section, wherein the formwork has a cloth stone part form and a footing part form, The frame is an upper side plate, a lower side plate that contacts the outer surface of the upper side plate, side plate fastening means that can adjust the vertical position of the upper side plate and the lower side plate, and the distance between the upper side plates on both sides can be adjusted, and the space between the upper side plates on both sides can be adjusted. And a fastening means for the upper side plates on both sides, the lower side plate has a flange portion that bends outward at the lower end thereof, and the footing portion formwork contacts the upper surface of the flange portion of the lower side plate. An upper footing frame having a hanging part that hangs from the outside of the flange part integrally with the flange part, and a vertical plate part that hangs in contact with the outer surface of the hanging part of the upper footing frame and is outward at the lower end of the vertical plate part. What It has a lower footing frame with a bent mounting seat and fastening means that can adjust the vertical position of the upper footing frame and the lower footing frame. And a footstone part-fusestone footing frame fastening means capable of contacting the flange part of the upper footing frame of the footing part formwork and adjusting the position in the horizontal direction orthogonal to the longitudinal direction of the cloth foundation. It is a concrete formwork.

A third aspect of the present invention is a concrete formwork, which is used for forming a concrete cloth foundation and has fastening means for fastening the formwork on both sides across the upper side plates on both sides. A concrete formwork, which is supported by a member spanned between side plates, has an upper surface in a horizontal position corresponding to the upper surface of the stone, and has a hanging plate-shaped level member.

A fourth invention of the present invention is the concrete formwork according to the third invention, characterized in that the level member is provided with a mounting portion for a foundation bolt.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

Example 1 FIG. 1 shows an assembled state, and FIG. 2 is an exploded perspective view. The concrete formwork has a cloth stone part formwork 12 and a footing part formwork 13. The stone part form 12 has an upper side plate 14, a lower side plate 15 in contact with the outer surface of the upper side plate 14, and side plate fastening means 16 capable of adjusting the vertical position of the side plates 14 and 15 and the distance between the upper side plates 14 on both sides. It is provided with fastening means 17 for the upper side plates 14 on both sides which are passed between the upper side plates.

The side plate fastening means 16 is provided with a vertically elongated hole 15a in the lower side plate 15, the plant bolt 14a having the root welded therein is inserted in the upper side plate 14, and the nut 14b is screwed into the plant bolt 14a. Has been. The fastening means 17 of the upper side plate 14 is a through bolt 18 having threaded portions 18b on both sides of a large-diameter body portion 18a having a length equal to a fixed width W of the stone portion 6 of the cloth foundation 5, and a through bolt 18. The upper side plate 14 is provided with holes 14a into which the threaded portions 18b at both ends of the bolt 18 are fitted, a nut 19 is screwed into the threaded portion 18b, and the upper side plate 14 is passed through the large-diameter body portion 18a and the threaded portion 18b of the bolt 18. It is designed so that it can be fixed by pressing it on the stepped part of. A concave groove 18c is provided in the circumferential direction in the middle of the large-diameter body portion 18a of the through bolt 18, and a hole provided in a level plate 21 in which the plate surface is vertical and which is provided as a horizontal member in the concave groove 18c 21a is fitted. The large-diameter body portion 18a of the through bolt 18 is axially movable in the hole 21a of the level plate 21. However, the level plate 21 and the through bolt 18 may be fixed by welding or the like. The level plate 21 is provided with a large-diameter hole 21a. In the above, in the stepped portion of the large-diameter body portion 18a and the threaded portion 18b of the through bolt 18, the threaded portion 18b is provided with a notch groove in the circumferential direction, and the nut 19 is screwed into the threaded portion 18b. When the outer periphery of the nut 19 is tapped, it is sheared from the cut groove portion.

The lower side plate 15 is provided at its lower end with a flange portion 15b that is bent outward.

The footing part formwork 13 has an upper footing frame 22 and an upper footing frame 22 that integrally has a flange part 22a that contacts the upper surface of the flange part 15b of the lower side plate and that has a hanging part 22b that hangs from the outside of the flange part 22a. A lower footing frame 23 having a vertical plate portion 23a in contact with the outer surface of the hanging portion 22b of the frame 22 and a horizontal mounting seat portion 23b bent outward at the lower end of the vertical plate portion 23a, and an upper footing. A footing frame fastening means 24 is provided for fixing the frame 22 and the lower footing frame 23 so that their vertical positions can be adjusted. The footing frame fastening means 24 has an elongated hole 23c vertically provided in a vertical plate portion 23a of the lower footing frame 23, and its root is fixed to a hanging portion 22b of the upper footing frame 22 by welding or the like. The nut 25 is screwed into the planting bolt 22d which is inserted through the long hole 23c of the footing frame 23.

The flange portion 15b of the lower side plate 15 of the cloth stone part mold 12 and the flange portion 22a of the upper footing frame 22 of the footing part mold 13 are in contact with each other and are directly positioned in the longitudinal direction of the cloth foundation 5 and positioned horizontally. There is provided a burial part-fabric footing frame fastening means 26 capable of adjusting. The burial part-fabric footing frame fastening means 26 has a long hole 22c which is orthogonal to the longitudinal direction in the flange part 22a of the upper footing frame 22, and is welded to the flange part 15b of the lower side plate 15 of the burial part form frame 12. A planting bolt 15d that is planted by means such as the above is inserted through the elongated hole 22c, and a nut 27 is screwed into the planting bolt 15d. A mounting hole 23d is provided in the mounting seat portion 23b of the lower footing frame 23.

FIG. 1 shows an assembled state. The length of the large-diameter body portion 18a of the through bolt 18 of the fastening means 17 of the upper side plate is set so as to correspond to the width W of the stone portion 6 of the cloth foundation, and this portion is rarely changed. As shown in FIG. 1, the through bolt 18 is inserted through the hole 21a of the level plate 21 to be assembled. The footing width F is adjusted by the cloth stone portion-cloth stone footing frame fastening means 26. That is, when the nut 27 is loosened, the flange portion 15b of the lower side plate 15 and the flange portion 22a of the upper footing frame 22 are slidable. Therefore, when these members are displaced in the direction orthogonal to the longitudinal direction, the inside of the long hole 22c is moved. The planting bolt 15d moves and guides, and the space between the hanging parts 22b on both sides for obtaining the required footing width F is obtained. When the space corresponding to the footing width F is obtained, the nuts 27 of the cloth stone footing fastening means 26 of the upper footing frame 22 and the lower side plate 15 of the cloth stone part form 12 are strongly tightened.

Next, the nut 25 of the footing frame fastening means 24 that fastens the upper footing frame 22 and the lower footing frame 23 is loosened, and the hanging portion 22b of the upper footing frame 22 and the lower footing frame 23 are loosened. When the vertical plate portion 23a is slid up and down relatively, the planting bolt 22d moves in the long hole 23c. Then, the height FH of the footing portion 7 is adjusted to the required height, and the nut 25 for fastening the upper and lower footing frames 22 and 23 is tightened. Similarly, when the nut 14b of the fastening means 16 for the upper side plate 14 and the lower side plate 15 is loosened to move the upper side plate 14 up and down, the planting bolt 14a moves up and down in the elongated hole 15a. The upper edge of the upper side plate 14 is higher than the upper edge of the level plate 21 by a certain height. Therefore, the height of the concrete formwork is adjusted to a value H + α obtained by adding the height difference H between the upper side plate 14 and the level plate 21 to the height H of the cloth foundation 5, and then the nut of the side plate fastening means 16 is adjusted. Tighten 14b. The surface of the concrete 4 to be discarded at the time of construction is approximately horizontal. Therefore, the concrete formwork whose dimensions have been adjusted as described above is disposed on the concrete 4 to be discarded, aligned to correct the longitudinal bending, and inserted into the mounting hole 23d of the mounting seat portion 23b after the desired arrangement is obtained, and a nail (not shown) is provided. ) Is thrown away and thrown into concrete 4. This nail has a notch at the base of the head, and the height of the head is high. A cut groove is provided immediately below the head (so-called under the neck) so that the head can be separated by hitting it from the side. Thus, an approximate level can be obtained. Next, loosen the nut 14b of the side plate fastening means 16 that fastens the upper side plate 14 and the lower side plate 15 to such an extent that the upper side plate 14 can be held, and see the upper edge of the level plate 21 with a leveler, an autocollimator, etc. The nuts 14b arranged on both sides of the upper side plate 14 are hit so that the upper edge of the plate 21 is horizontal, and the upper side plate 14 is moved up and down. When the upper surface of the level plate 21 is horizontal, the nut 14b is tightened.

Concrete pouring is performed from the opening between the upper side plates 14. The upper surface of the cloth foundation 5 is finished by sliding the cast concrete upper surface with a cement trowel along the upper surface of the level plate 21.

After curing, loosen and remove the nuts 14b, 25, 27 of the fastening means 16, 24, 26 and tap around the nut 19 of the fastening means 17 on the upper side plate to attach the through bolt 18 to the screw portion 18b. After breaking from the notch groove on the root side and hitting the head of the nail driven into the mounting hole 23d of the mounting seat portion 23b of the lower footing frame 23 from the side to break the head, lower footing The frame 23, the upper footing frame 22, the lower side plate 15, and the upper side plate 14 are removed in this order.

The level plate 21 passes through the cloth stone portion 6 and the large-diameter body portion 18 a of the bolt 18 remains. The through bolt 18 serves as a substitute for the reinforcing bars orthogonal to the longitudinal direction, and the concrete substance is connected to both sides of the level plate 21 by the large-diameter continuous holes 21a. The level plate 21 serves as a reinforcing bar that resists bending. Becomes

[Embodiment 2] This embodiment is an example in which the fastening means of each divided form in the previous embodiment is not a screw fastening but a wedge. As shown in FIGS. 3, 4, and 5, the elongated holes 15a, 22c, and 23c provided in the lower side plate 15, the upper footing frame 22, and the lower footing frame 23 are slightly longer than those in the first embodiment. Then, elongated holes 15a, 22c, and 23c are respectively inserted into the outer side surface of the upper side plate 14, the upper surface of the flange portion 15b of the lower side plate 15, and the outer side surface of the hanging portion 22b of the upper footing frame 22 to project outward. The base of the bracket 31 is fixed by welding. A long hole 32 is provided in the bracket 31 in a protruding direction from the root, and a wedge 33 is driven into the long hole 32. The concrete formwork can be disassembled by tapping the large end of the wedge 33 during assembly to be fastened, and by knocking out the small end of the wedge 33 when disassembling.

In this example, the ribs 34 are provided on each of the divided molds to reinforce, but it goes without saying that the reinforcing ribs 34 may be provided in the previous embodiment.

[Third Embodiment] FIGS. 7 and 8 show that the foundation bolts 11 are attached to the level plate 21 before the concrete is placed, and the foundation bolts 11 are embedded at the same time as the concrete is placed. This is an example that does not require a belt mounting step. Near the upper and lower edges of the level plate 21 in the longitudinal direction, a plurality of U-bolt 28 mounting holes are provided in a row along the upper and lower edges, respectively. The U-bolt 28 is held in the U-bolt 28 and the nut 29 is screwed into the U-bolt 28. At this time, the height of the foundation bolt 11 protruding above the level plate 21 is set as the required height for fastening the base 8. As a result, when concrete is placed after assembling the concrete formwork as in the previous embodiments and the upper surface of the stone portion 6 is leveled along the upper surface of the level plate 21 with the cement iron, the foundation bolt 11 is removed from the cloth foundation 5. It projects upward for a predetermined length. Therefore, the installation work of the foundation bolts 11 is simplified, and the installation work of the foundation bolts 11 is completed at the same time as the concrete placing for the cloth foundation 5 is completed and no post-work is required, so the process is reduced and the management labor is reduced. Is omitted.

Regarding the level plate 21 at the portion where the spacing between the foundation bolts 11 provided on the cloth foundation 5 is determined by the column spacing, the foundation bolts 11 may be welded to the level plate 21. ..

In the embodiment, the flange portion 22a of the upper footing frame 22 is superposed on the flange portion 15b of the lower side plate 15, but it may be turned upside down. In this way, the footing part 7 may be first cast into concrete, and the stone part mold 12 may be fixed to the footing part mold 13 without waiting for curing of the footing part. Next, you may place concrete on the stone block. The fastening means 26 is provided with a planting bolt or bracket 31 (not shown) which inserts a long hole in the flange portion 15b and a long hole in the flange portion 22a.

[0027]

[Effect of the device]

 In the present invention, since the thickness and height of the cloth foundation of the concrete formwork and the height and width of the footing part can be adjusted, it is not necessary to prepare many types of concrete formwork of the fixed formwork.

In the present invention, the concrete formwork is divided into a cloth stone formwork and a footing part formwork and connected by fastening means capable of adjusting the width direction. Since the members are divided so that they can be displaced and joined by fastening means that can adjust the vertical position, one concrete formwork can be used for various concrete foundations, resulting in cost reduction and maintenance. Easy to manage.

When the level member is provided in the present invention, the level of the upper surface of the cloth foundation is accurately formed at the time of placing the concrete, the number of man-hours for this is small, and the process is short, and the level member is made of concrete. It will reinforce the foundation.

When the foundation bolt is attached to the level member, the foundation bolt attachment is completed at the same time as the concrete is placed, and the process is omitted.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a perspective view of another embodiment.

FIG. 4 is a detailed perspective view of portions A, B and C of FIG.

5 is a plan view parallel to the plane of the wedge of A, B, and C parts in FIG.

FIG. 6 is a vertical cross-sectional view perpendicular to the longitudinal direction of the cloth foundation.

FIG. 7 is a vertical sectional view showing a mounting portion of a foundation bolt.

8 is a cross-sectional view taken along the line EE of FIG.

[Explanation of symbols]

 12 Flush stone formwork 13 Footing part formwork 14 Upper side plate 15 Lower side plate 16 Side plate fastening means 17 Upper side plate fastening means 21 Level plate 22 Upper footing frame 23 Lower footing frame 24 Footing frame fastening means 26 Floating footing Frame fastening means

Claims (4)

[Scope of utility model registration request] 1. A concrete formwork for use in forming a concrete foundation with an inverted T-shaped cross section having footing, the formwork being compatible with concrete foundations in which the thickness and height of the stone portion and the height and width of the footing portion are different from each other. Concrete formwork characterized by being adjustable. 2. A concrete formwork used for forming a concrete foundation with footing having an inverted T-shaped cross section, wherein the formwork has a gemstone part formwork and a footing part formwork, and the gemstone part formwork includes an upper side plate. A lower side plate that contacts the outer surface of the upper side plate,
The side plate fastening means capable of adjusting the vertical positions of the upper side plate and the lower side plate, and the fastening means for the upper side plates on both sides, which is adjustable between the upper side plates on both sides and is adjustable between the upper side plates on both sides. The side plate has a flange portion that bends outward at the lower end thereof, and the footing part formwork has an upper foot that has a hanging part that hangs integrally with the flange part that contacts the upper surface of the flange part of the lower side plate. A lower footing frame having a vertical frame part that hangs in contact with the outer surface of the hanging part of the upper footing frame, and a mounting seat part that is bent outward at the lower end of the vertical plate part, and an upper part It has a fastening means that can adjust the vertical position of the footing frame and the lower footing frame, and connects the flange part of the lower side plate of the cloth stone part form and the flange part of the upper footing frame of the footing part form. Cloth Adjustable stepping stone part located in the horizontal direction perpendicular to the longitudinal direction of the foundation - concrete form, characterized in that it comprises a stepping stone footings frame fastening means. 3. Used for molding concrete cloth foundation,
In a concrete formwork equipped with fastening means for fastening the formwork on both sides across the upper side plates on both sides, the concrete formwork is supported by a member spanned between the upper side plates on both sides, and the upper surface has a horizontal position corresponding to the upper surface of the stone. , A concrete formwork having a hanging plate-shaped level member. 4. The concrete formwork according to claim 3, wherein the level member is provided with a mounting portion of a foundation bolt.