JP2013032673A - Form for dirt floor slit and construction method of dirt floor concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form for a dirt floor slit which does not cause constructed tiles/bricks or interlocking to sink by pressure of vehicles and the like and hardly causes constructed gravel and the like and sediment of the ground to be mixed with each other.SOLUTION: A form for a dirt floor slit is provided with a flange 11, which has anchor driving holes, on the upper part of a concrete damming part 12 of a modified U-shaped form for a dirt floor slit, and a lower damming part 13 which extends diagonally from the lower part of the concrete damming part 12 in a direction opposite to a concrete placing part.

Description

  The present invention relates to a soil slit mold and a method for constructing soil concrete.

  Conventionally, there is a method of constructing concrete in a flat shape such as a parking lot or an approach to the exterior of a building such as a house. At this time, if soil concrete is constructed in a large area, cracks may occur. Therefore, it is necessary to divide the area into a certain area and insert an expansion joint material or provide a slit. For slitting reasons, tiles, bricks, interlocking, colored gravel, lawn, flowers, etc. are used in the slits for design reasons.

  In the case of providing this slit, conventionally, two timbers having a width corresponding to the thickness of the concrete to be placed are used as a dam plate, and a dam plate is installed at a predetermined location according to the slit width, and on both outer sides of the dam plate After placing the concrete, the weir plate is removed after solidification, and tiles, bricks, interlocking, colored gravel, lawn, and flowers are installed in the secured slits. The wooden frame may be a plywood processed into a long rectangle, and a metal frame may be used for the same purpose instead of the wooden frame.

  However, the slit made of the above-mentioned wooden frame / metal frame has a flat surface on the side where the wooden frame or metal frame dams and contacts the concrete, and stands perpendicular to the ground. The width of the upper side is the same. Therefore, when tiles, bricks, and interlocking are installed, they will sink from the surrounding concrete surface due to the pressure of the car passing through the upper surface. Moreover, when colored gravel is applied, it is troubled by measures against weeds from the bottom, and if the thickness of about 30 mm to 40 mm is sufficient, expensive colored gravel must be put to the ground surface, which is uneconomical. Moreover, when wood is used as a dam plate, it cannot be used after several uses and must be made into waste material, which is uneconomical. When extending or reducing the length, cutting is necessary and wasteful.

  Accordingly, the present invention provides a method for constructing a soil slit and a soil concrete that can solve the above problems, improve work efficiency, form a clean and reliable finish, and is excellent in versatility. Objective.

  In order to solve the above-mentioned problems, the interstitial slit formwork according to claim 1 is formed by bending a thin plate-like formwork material into a deformed U-shape, and the two concave parts of the formwork are relative to each other. It is characterized in that it is temporarily fixed and concrete is cast to form a slit.

  The mold for slits according to claim 2 has a flange having an anchor insertion hole for driving an anchor for temporarily fixing the mold on the upper part, and the dirt concrete side of the anchor insertion hole is perpendicular to the flange. It is the same as the part that bends perpendicularly to the ground and bends diagonally downward in the opposite direction to the cast-in-place concrete and touches the ground. It is characterized by being parallel with an interval of.

  The interstitial slit formwork according to claim 3 is fitted with a connecting member for preventing horizontal displacement and fastening the two when the two interstitial slit formwork abuts on both ends in the longitudinal direction of the upper flange. It is characterized by having a connecting cut-in hole.

  After the concrete is solidified by constructing the slit of the interstitial concrete using the interstitial slit formwork according to claim 4, the lower part of the interstic concrete after removing the formwork projects obliquely toward the slit side Thus, tiles, bricks and interlocking to be constructed in the slit can be prevented from sinking into the ground, gravel can be prevented from mixing with the earth and sand in the ground, and weeds can be prevented from breeding. When constructing lawns and flowers, the bottom is connected to the ground, so the growth of the roots is not hindered.

  According to the soil slit form of the first aspect, when the slit is constructed, the use of a rated soil slit form can speed up the operation and stabilize the product.

  According to the form for slits between soils according to claim 2, since the side for damming the cast concrete is bent obliquely on the opposite side to the cast concrete in the lower layer portion, the concrete after solidification has the lower layer portion on the mold side. Projecting diagonally to the side, strengthening the soil concrete, leading to a great effect when creating slits. Further, when removing the interstitial slit formwork after solidifying the concrete between the soil, since the space is secured on the slit side, the interstitial slit formwork can be easily brought down to the slit side.

  4. If the area of the soil concrete is large and it is necessary to extend the rated formwork member, the displacement of the joint is a problem, but according to the soil slit formwork according to claim 3, a plurality of soil slit formwork When extending the formwork, by aligning the notch for connection at the abutting part and fitting a dedicated connecting member, it can be tightened without any 1 mm displacement, and can respond to vibration during concrete placement and sudden impact during construction. A uniform joint surface can be secured.

  5. The method for constructing interstitial concrete according to claim 4 differs from the conventional flat rectangular formwork in that the concrete is placed by placing a deformed U-shaped form for interstitial slits relative to each other with the recesses facing inward. The slit made after solidification projects the lower layer diagonally to the slit side, and in the next work, the foundation of tile, brick, interlocking to be built in the slit is supported from both sides, and after construction completion and use When gravel is applied to prevent settlement due to weight, the area in contact with the ground at the bottom decreases, so that it mixes with the earth and sand in the ground and prevents gravel from diminishing, preventing weeds from breeding. In addition, the anchor insertion holes of the opposite molds for soil slits are stacked up and down, two molds are stacked at the flange, and if both molds are temporarily fixed with one anchor, the gap on the ground surface under the slits Is the smallest and the same value as the diameter and width of the anchor. The slits of soil concrete constructed in this state are very narrow compared to the gaps on the upper surface, and the gap between the lower surface and the ground is extremely narrow, which is effective in preventing gravel loss and weed growth.

  Next, the best mode of the construction method of the slit of the soil concrete using the soil slit formwork and the soil slit formwork 10a will be described with reference to FIGS. As shown in FIG. 1, the interstitial slit mold 10a has a U-shaped cross section, and has a flange 11 having an anchor hole 14 into which an anchor for temporary fixing is inserted at the upper part and an interstitial concrete bent at a right angle downward. It consists of an upper damming portion 12 for damming and a lower damming portion 13 bent obliquely downward in the opposite direction to the soil concrete.

  The earth slit mold 10a is made of, for example, steel, and has a length of about 1000 mm to 3000 mm. The flange 11 has a width of about 50 mm to 60 mm and a total height of about 100 mm to 200 mm. In addition, the material of the mold for slits in the soil is not limited to a steel plate, and may be formed of other metal / resin as long as it is hard and thin.

  As shown in FIG. 1, the anchor driving holes 14 are provided in the flange 11 at an appropriate interval. However, as shown in FIG. 2, the soil concrete side 14 a of the anchor driving holes 14 and the tip of the lower damming portion 13 are connected to the ground B. A line connecting the contact points 13 a is parallel to the upper dam member 12.

  When constructing a slit with the soil slit formwork 10a, the concave portion is set relative to the concrete placement surface as shown in FIG. 3, but the installation width in this case is appropriately set according to the construction planned material in the slit. . The minimum width is the case where the anchor is shared by the molds facing each other as shown in FIG.

  When extending the soil slit mold 10a, the connecting metal fitting 15a shown in FIG. 6 is used for connection by using the connecting cutting hole 15 cut into the end of the flange 11 as shown in FIG. FIG. 7 is a partially enlarged view of the two slit molds 10a that are tightly extended with connecting metal fittings.

  The slits in soil concrete may intersect. In that case, a slit that intersects perpendicularly using a cross-slave mold 10b for orthogonal cross provided with 13b in which the lower damming portion 13 projects obliquely at the end relative to the mold 10a for soil slit in FIG. Install. FIG. 9 is a detailed view thereof.

  Since the soil slit mold 10a is rated, the mold may be adjusted to match the construction dimensions. FIG. 10 is a diagram in which two molds are adjusted by overlapping in the longitudinal direction.

  FIG. 11 is a detailed view of the case where the soil concrete formwork 10a after solidification is removed and bricks or interlocking is applied.

The schematic perspective view of the mold 10a for dirt slits. Sectional drawing of the perpendicular direction of the mold 10a for dirt slits. The detailed figure which shows the state which tentatively fastened the sheet | seat formwork 10a for earth | atmosphere slits relatively, formed the slit, and laid concrete. The detailed figure which shows the state which formed the slit of the minimum width | variety using 2 form 10a for soil slits, and cast concrete. The perspective view which shows the state of the cutting hole 15 for a connection of the flange 11 part. The perspective view which shows the shape of the connection metal fitting 15a. The perspective view which shows the state which connected the two form | molds 10a for slits between soils using the connection metal fitting 15a. An orthogonal soil slit mold 10b including a basic shape of the soil slit mold 10a and a damming portion 13b processed obliquely. The detailed view which shows the state orthogonally crossed to the basic | foundation form | mold for earth slit 10a using the form for earth slit 10b for orthogonal. The detailed figure which shows the state which has piled up the sheet | seat formwork 10a for dirt slits in the longitudinal direction, and is adjusting the length of the extension direction. The detailed figure which shows the state which constructed brick or interlocking.

10a Basic form of intersoil slit mold 10b Orthogonal intersoil slit form 11 Flange 12 Upper dam part 13 Lower dam part 13a Lower dam part tip 13b Lower dam part of the intersoil slit form Diagonally machined portion 14 Anchor hole 15 Connection cut hole 15a Connection metal fitting A Anchor B Ground C Dirt concrete R1 Tile / brick / interlocking R2 Tile / brick / interlocking foundation concrete R3 Tile / brick / interlocking joint material

Claims (4)

  An earth-slit mold with a cut-in hole for connection and a connecting member that can be connected in a state in which the straight-line connecting part is brought together without slipping.   A soil slit formwork having an anchor hole at a position where the concrete damming side of the anchor hole temporarily fixing the formwork member to the ground is in contact with the lowermost end portion of the deformed U-shape.   The above-mentioned slit slit form which prevents the displacement of the two formwork members and can be tightly joined together by fitting the joining member into a connection notch formed by joining the two formwork members together.   It is a construction method of the slit of the interstitial concrete using the form for earth slits of Claims 1, 2, and 3, and when arranging the formwork member, the deformation U-shaped formwork member is temporarily placed and temporarily fixed. The method for constructing soil concrete, characterized in that after completion of placing the soil concrete, the lower layer portion of the soil concrete is obliquely projecting inside the slit.

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