JP2005325666A - Ready-mixed concrete placing method for floor surface layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete placing means capable of forming an excellent smoothness, levelness and workability in the placement of ready-mixed concrete when placing the ready-mixed concrete for forming an even, level floor surface layer on the floor backing by replacing the conventional method having no stability in quality wherein the ready-mixed concrete is placed and leveled by using a plurality of working faces, rulers and levels located in advance; or in another conventional method wherein no working faces are used and a straight rail for sliding a leveling tool is held to a predetermined manner by supports usable only when they are aligned with the position of drilled holes made to the rail. <P>SOLUTION: A right-angled quadrangular frame for sliding the leveling tool is placed on the working faces and the even, level floor surface layer is formed in a wide area by contacting a horizontal ribbed flat plate attached to the frame to the working faces through a wide area, or by attaching a plate-shaped auxiliary device capable of freely changing the gripping position of the flat plate when holding the right-angled quadrangular frame for sliding the leveling tool by the supports. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a construction method for placing a ready-mixed concrete to form a floor surface layer portion on a floor base.
More specifically, ready-mixed concrete or high strength usually used for floors of buildings having a relatively large area, such as ordinary houses, small to medium-sized buildings such as condominiums, large buildings for offices, sports etc. The present invention relates to a construction method for placing a ready-mixed concrete and forming a horizontal floor surface portion with less unevenness as a whole.

  Conventionally, when forming a surface layer of concrete with reinforcing bars on the ground surface for flooring, the occurrence of partial irregularities or relatively large undulations on the finished surface of the surface layer is minimized, and the entire surface is smooth and horizontal. The emergence of techniques for forming floors is a major challenge, and various methods have been proposed.

First, typical examples of techniques currently used in the industry will be described.
Lay the reinforcing bars bound on the mesh on the floor surface of the floor, place a portion of ready-mixed concrete first, preliminarily level it, or directly on the reinforcing bars without placing them. “Rule” that sets the horizontal position of the ready-mixed concrete by placing multiple blocks called “around” with the ready-made concrete in a spherical shape, as a guide for the ready-casting height of the ready-mixed concrete. Place a ruler and spirit level combination tool across the mass, fine-tune the height of the "around", and then place the remaining ready-mixed concrete to fill the area around the "around" Means have been taken to obtain the desired height, smoothness and levelness as a whole. However, in this method, after the fine adjustment of the height of the “around”, during the work of surrounding concrete placing, leveling, etc. according to the placed ruler, There were inconveniences such as easy contact and consequently the height of the ruler changed.

  As another conventional method, a scale is set at desired positions on the ground surface on which the reinforcing bars are laid, and the position of the concrete surface to be placed is determined using a surveying instrument such as a level meter, and a water thread is stretched to strike this. There is a method of repeating smoothing and leveling leveling as a guideline for the installation reference plane, but this method is based on observation with the naked eye, even if observing to match the height of the water thread or The leveling work depends on the feeling, and it is very difficult to match the height and leveling of the ready-mixed concrete including the whole area, especially the area away from the wet thread, to the position of the wet thread. Achieving smoothing and leveling after installation, leveling was not satisfactory.

As a means to solve the problems of the latter conventional method, two rails are installed at a desired position and height using a support, and a leveling tool (many plates) is slid along this rail. A leveling technique is also disclosed which is performed by attaching a vibrator if necessary.
For example, as a representative
JP 2001-159240 A JP 2001-59343 A
However, normally, a rebar assembled in a mesh shape is laid on the ground on which the ready-mixed concrete is placed, so that it is obstructed by this rebar and the rail support columns are placed at a desired position at a desired interval. Although it is difficult to install, it is a technical idea disclosed on the assumption that these installations are always possible, and is not practical.
More specifically, it is almost impossible to install the support columns for supporting and fixing the rails at desired intervals and at desired positions without contacting or obstructing the laid reinforcing bars. This is because, even when trying to avoid contact with the reinforcing bar, it is often difficult to avoid contact with the reinforcing bar in any of a plurality of columns arranged in a straight line for fixing the rail.

On the other hand, in the industry, smooth concrete is placed and leveled, and smoothness and levelness target values are set when observing the entire surface obtained after solidification. There is an opportunity to create quality regulations for quality and levelness, and to set grades that indicate the level of quality when measured by the measurement method. Has already started moving in this direction.
(Monthly) Architectural finishing technology 29 MAR. 2004. P. 35-51
In particular, P.I. Nos. 37 to 40 show measuring methods and grades for smoothness (concave / convex) and horizontal (unland) using a straight ruler with a length of 2 m, and some are being adopted in the industry.

  The present invention discloses a method capable of forming a horizontal floor surface portion with less unevenness on a relatively wide floor base without using the conventional leveling instrument sliding rail, and It is also a disclosure relating to the results of development of technology that recognizes the quality measurement methods and grades that are in the direction of adoption in the industry and obtains such quality.

Problems to be solved by the invention

  Accordingly, the present invention provides a leveling instrument sliding rail that can satisfy the evaluation standards based on the quality measurement method regarding the smoothness and levelness of the concrete surface after placing, leveling or solidification being adopted in the industry. A floor using new means that is not a traditional method of holding in a straight line of struts along the rail, and that a ruler placed on the "around" does not sink into the periphery and prevent leveling It is an object to provide a surface layer construction method.

Means for solving the problem

As a result of intensive studies to solve the above problems, the present inventor succeeded in finding an effective solution. The gist of the present invention is as follows.
The first invention is a construction method in which a reinforcing bar is laid and a ready-mixed concrete is laid on a floor surface for flooring, and the surface is leveled to form a smooth and horizontal floor surface portion having a desired thickness.
(1) The leveling of the ready-mixed concrete surface is performed by placing a part of the ready-mixed concrete first, preliminarily leveling it, or directly on the rebar without placing these. A plurality of “arounds” of the ready-mixed concrete ingots are placed at desired intervals, and a right-sided quadrilateral frame is placed on the plurality of “arounds” via the plurality of “arounds”. Including the work of leveling the ready-mixed concrete placed in a right-angled quadrilateral frame with a leveling tool passed over one set of opposite sides,
(2) The right-angled quadrilateral frame is a frame composed of two sets of opposing high-rigidity rectangular wall surfaces, and each long side constituting each wall surface is leveled, and each wall surface is When used in a vertically standing state, each of the long horizontal surfaces on the upper side of at least one pair of facing rectangular wall surfaces of the frame body constitutes a sliding surface for sliding the leveling tool, and the rectangular shape Closed annular flat plate pieces that horizontally extend outward from the long side on the lower side of the wall surface to form the hook-shaped ribs of the right-sided quadrilateral frame body, or the lower side of at least one pair of each rectangular wall surface that faces each other A flat plate piece that horizontally extends outward from the long side of the side to form a rib of the rectangular wall surface,
(3) The leveling tool is integrally attached to the sliding rod with a structure in which a plurality of the sliding rods hang down in parallel with a gap between the sliding rod and the central portion thereof. It is composed of a flat plate group having a length that does not exceed the inter-surface distance and a width that is the same as the height of the right-sided quadrilateral frame,
(4) Place a right-sided quadrilateral frame on the “Conceal” made of ready-made concrete with the flat plate pieces in contact with each other, place ready-mixed concrete to fill the space between the “Conceal”, and level it along the sliding surface. The present invention relates to a method for constructing a surface layer portion using fresh concrete, which is a construction method including a step of sliding a stick of a jig and leveling ready-mixed concrete with a group of flat plates.
The second invention is a construction method in which a reinforcing bar is laid and a ready-mixed concrete is placed on the floor surface for flooring, and the surface is smoothed to form a smooth and horizontal floor surface layer portion having a desired thickness.
(1) The leveling work on the surface of the ready-mixed concrete includes the work of sliding the leveling tool in contact with the ready-mixed concrete along two sliding surfaces that are held at the same height.
(2) The two sliding surfaces are formed of at least one pair of rectangular wall surfaces facing each other in a right-sided quadrilateral frame body configured by horizontally arranging the long sides of the two sets of high-rigidity rectangular wall surfaces facing each other. It consists of each long horizontal plane on the upper side,
(3) The holding of the two sliding surfaces for sliding the leveling tool extends horizontally from the long side on the lower side of each rectangular wall surface constituting the right-sided quadrilateral frame body to the right side. It extends horizontally outward from the long side on the lower side of the rectangular wall surface that needs to be held by at least the pillar among the closed circular flat plate pieces that form the bowl-shaped ribs of the shape frame body or each rectangular wall surface body Including holding the flat plate pieces that form the ribs of the rectangular wall body, and holding by a column upright on the floor surface for flooring,
(4) The horizontal and equal height holding by the support is the holding by the plate-like auxiliary tool that is screwed to the support and is sandwiched between the upper and lower nuts positioned at a desired height.
(5) The plate-like auxiliary tool has a portion formed with a through hole for supporting pillars that is orthogonal to both the upper and lower outer surfaces, and an opening at the edge that is parallel to both the upper and lower outer surfaces and leaves the upper and lower walls. A flat plate-like body having a portion in which a groove having a depth into which a flat plate piece can be inserted is formed, and a screw for pressing and fixing the flat piece to be inserted on one wall surface forming the groove of the flat plate-like body Is screwed in,
(6) The upright position of the support is two or more positions along the outside of the flat plate piece that needs to be held so that the upright of the support is not disturbed by the contact between the support and the reinforcing bar,
(7) The upright of the support is an upright obtained by connecting and fixing each positioned support to a right-angled quadrilateral frame body via a plate-like auxiliary tool and a flat plate piece,
(8) The leveling tool has a sliding rod and a plurality of pieces that hang down in parallel with a gap at the center of the sliding rod, and are attached to the sliding rod integrally. A flat plate group having a length that does not exceed the height and the width of the right-angled quadrilateral frame and the same dimension,
(9) The construction method using the leveling tool is a construction method including a step of sliding the leveling tool sliding rod along the sliding surface and leveling the ready-mixed concrete with the flat plate group.
It relates to the construction method of the surface layer part using raw concrete.
3rd invention is related with the construction method of the surface layer part using ready-mixed concrete as described in said 2nd invention whose ready-mixed concrete is for high strength or ultra-high strength concrete with a low water / cement ratio.
The fourth aspect of the present invention is the use of ready-mixed concrete floor surface according to the second or third invention, wherein the leveling operation of the ready-mixed concrete surface is performed via a net having high bending resistance and laid on the ready-mixed concrete surface. It relates to the construction method of the part.
According to a fifth aspect of the present invention, the leveling work of the ready-mixed concrete surface is a raised portion of the ready-mixed concrete in which the leveling tool provided with a vibration function is placed prior to the work of sliding the leveling tool along the sliding surface. This relates to a method for constructing a fresh concrete use floor surface layer according to any one of the second to fourth aspects of the invention, which applies vibration to the ready concrete.
6th invention is related with the construction method of the floor layer part using ready-mixed concrete in any one of the said 2nd thru | or 5th invention whose high-rigidity rectangular-shaped wall body is made of steel or aluminum alloy.
According to the seventh aspect of the present invention, the upper and lower nuts of the plate-like auxiliary tool into which the support pillar is inserted and penetrated are centered on the upper surface of the lower nut screwed to the support pillar. Tubular screw formed by connecting a nut structure in which a post is screwed along the central axis and a tubular screw having a length longer than the thickness of the plate-like auxiliary tool and an outer diameter that can be inserted into the column insertion through hole of the plate-like auxiliary tool The tubular screw part of the attached lower nut is inserted into the plate-shaped auxiliary tool, and the plate-shaped auxiliary tool is clamped and clamped by the upper nut screwed to the lower nut part and the tubular screw part, and screwed to the desired position of the column. The floor surface layer portion using the ready-mixed concrete according to any one of the second to sixth aspects, wherein the lower nut with a tubular screw and the upper nut screwed to the support are clamped by tightening from the upper end of the tubular screw portion. Related to the construction method.
According to an eighth aspect of the present invention, the upright operation of the support is performed by inserting the lower end of the support into the tubular body extending vertically upward from the center of the pedestal placed on the floor base surface so as to be removable. The present invention relates to a method for constructing a surface layer portion of a ready-to-use concrete floor according to any one of the inventions.

The invention's effect

According to the method of the present invention, by adopting the above configuration, even if the area of the place for placing and leveling the ready-mixed concrete is considerably large, the leveling of the casting and leveling surface is relatively narrow. However, in the case of a construction method that uses “hit” even if the work is repeated, the wide surface of the flat plate piece abuts on the “hit” instead of the thin wall surface of the rectangular wall surface constituting the frame body. There is an effect that the body, that is, the frame body digs into the “around” and sinks, and the phenomenon that disturbs the horizontality hardly occurs. In addition, in the case of a construction method in which a flat plate provided on the entire circumference or part of a right-angled quadrilateral frame is held by a support column, keep the sliding surface for the leveling tool wide and on the same plane, and keep it horizontal. As a result, a smooth and horizontal surface layer portion can be formed over the entire processing surface.
Further, when the placing and leveling operations are repeated while translating the right-angled quadrilateral frame, the place where the work is finished and the place to be performed next are partially overlapped, that is, the former is the latter frame. By including a part in the body, the unevenness of the leveling surface is almost eliminated, and an effect that smoothing can be achieved can be obtained.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
The assembling apparatus 1 shown in FIG. 1 is a perspective view of an example of an apparatus suitable for carrying out the method for constructing a floor layer using ready-mixed concrete according to the present invention, and is partially cut away.
The rectangular quadrilateral frame 2 is composed of two pairs of opposing steel rectangular wall surfaces 21, 21 (left side and right side) and 22, 22 (back side and front side), and the lower side lengths of these rectangular wall surfaces. The case where the closed annular flat plate piece 2A that extends horizontally outward from the scale sides 21a, 21a, 22a, 22a and forms the hook-shaped ribs of the right-sided quadrilateral frame is shown.
In this case, there is a feature that the reinforcing property of the entire right-sided quadrilateral frame body by the flat plate piece is high.

  As another aspect, among the rectangular wall surfaces, at least a rectangular wall surface that needs to be held by a support column extends horizontally from the long side on the lower side to form a rib of the rectangular wall surface body. In addition to flat pieces such as 211, 211, and 221 and 221, flat plates such as 211, 211, 221, and 221 are individually formed for each wall body. Can be considered individually, and the leveling tool can be applied in any of two orthogonal directions, which is a preferred mode.

  On the other hand, the upper sides 21b, 21b and 22b, 22b of the same wall body constitute two sliding surfaces 21B, 21B and 22B, 22B, respectively, and the leveling tool 3 sliding on this surface straddles both sliding surfaces. The length (the distance between the horizontal frames in the drawing) and the wall surface between the wall bodies 21b and 21b or between the wall bodies 21b and 21b, or between 22b and 22b, that is, the distance between the sliding surfaces in the central portion excluding the sliding rod 31 and both ends thereof A flat plate group 32 composed of a plurality of parallel flat plates 32a, 32b, 32c having the same width as the height of the body 21b or 22b (vertical direction in the drawing) is integrally formed with a structure that hangs down from a sliding rod. .

  This leveling tool has a vibration function by connecting a vibrator when the ready-mixed concrete is cast in the right-angled quadrilateral frame 2 and is raised in a mountain shape, for example, in the case of high strength concrete with low fluidity. In order to prevent the fresh concrete from being degassed and tightened, repeatedly bring it into contact with the mountain-shaped portion while being lifted upward away from the sliding surface, While performing, it is preferable that the position is gradually lowered and placed on the sliding surface.

Since the construction method according to the present invention is a method in which the right-sided quadrilateral frame 2 is moved horizontally and sequentially, and only the range surrounded by the frame 2 is leveled, the leveling height of the ready-mixed concrete is Up to the positions of the lower sides 21a and 21a of the frame body, the leveling tool 3 has a width as described above (the height in the vertical direction in the drawing).
Note that the sliding force of the leveling tool 3 may be either human power or power. However, when using a low fluidity material such as the high-strength ready-mixed concrete, power is usually preferable.

Also, in leveling work with the leveling tool 3, a net with a high bending resistance is laid on the surface of the ready-mixed concrete. It is easy to improve. Further, the net can be left in the surface layer portion without being peeled off after use, and the reinforcing effect of the surface layer portion can be expected.
Reasons for improving workability when using the above nets are that the leveling tool cannot penetrate into the ready-mixed concrete, the net is highly resistant to bending deformation, and the leveling tool is slippery and easy to squeeze. It is possible that the smoothness of the leveling tool will improve due to the fact that concrete flax comes out.
The material of the net is not particularly limited as long as it has resistance to the above bending deformation, so long as it satisfies this physical property. However, resistance to the chemical properties of concrete is also necessary. Vinyl resins, polyester resins such as polyethylene terephthalate, high density polyethylene resins, alkali-resistant glass, stainless steel metals, carbon fibers, and the like can be suitably used.

Since the construction method of the floor surface layer portion according to the present invention is intended to level the wide area while moving the right-sided quadrilateral frame 2 as described above, the right-sided quadrilateral frame itself is continuously moved horizontally and horizontally. It is important to fix, and the method of supporting the frame 2 is a very important technical element.
As a support method, reinforcing bars laid on the floor foundation surface, especially reinforcing bars that are usually used in the form of meshes, even if the pillars are simply placed parallel to the rectangular wall surface on the floor surface, that is, arranged in a straight line. It is generally difficult or impossible to stand upright in a position suitable for support.

The support by the support column 5 according to the present invention solves this problem. Specifically, the support column 5 is placed as close as possible to the frame body 2 and upright as many as necessary to support the frame body 2, Plate-like auxiliary tools 4, 4... Extending toward the frame 2 are attached to the support columns and the plate-like pieces 211, 211 or 221, 221 facing the frame 2, and further if necessary. It is intended to be gripped at appropriate positions 211, 211, 221, and 221.
Here, the plate-like auxiliary tool 4 has a column insertion through-hole 411 that is perpendicular to the upper and lower outer surfaces of the plate-like body 41 (in FIG. 1, only a single plate-like auxiliary tool has a later-described nut on its upper surface. An edge 413d (shown in a cutaway view) is formed with a portion 412 formed with a through hole 411 formed in parallel, and an upper wall surface 413a and a lower wall surface 413b in parallel with both upper and lower outer surfaces. 6), and a portion formed with a groove 413c having a depth into which the flat plate piece 211 forming the rib can be inserted. In addition, it is more convenient that the upper wall surface is shorter than the lower wall surface in terms of the insertion work of placing the flat plate pieces first and then inserting them.

  .. Are inserted into the through-holes 411 for inserting the columns of the plate-like auxiliary tools 4, 4..., And are inserted into the columns 41, 41. Tightened with nuts 414, 414 .. (the nut on the lower surface side is not visible), and these columns are plate-like so as to be as close as possible to and parallel to the sliding surfaces 21B, 21B, 22B, 22B. The flat plate pieces 211, 211 or further 221, 221 of the right-sided quadrilateral frame 2 are inserted into the grooves 413c, 413c,... Provided in the auxiliary tools 4, 4,. The fixing screws 415, 415,... Provided on the wall surfaces 413a, 413a,... Are deeply screwed and the inserted flat plate pieces 211, 221, .. are pressed against the lower wall surfaces 413b, 413b,. Plate-like auxiliary attached to 5,5 ... 4,4 · perpendicular quadrilateral frame body 2 can be connected and fixed. Moreover, although the support columns 5, 5... Are not necessarily in a straight line with each other, the direction of the frame body 2 can be kept constant. Can be.

2 is a partially cutaway view of the XX cross-sectional view of FIG. 1 and is given the same reference numerals as FIG. Also shown are nuts 414, 414,... That contact the lower surfaces of the lower side wall surfaces 413b, 413b,.
A cross-sectional view of the leveling tool 3 is shown, and a flat plate group 32 consisting of three flat plates 32a, 32b, and 32c is shown, but the number is limited to three as will be understood from the function described later. It goes without saying that it is not. A detailed description of the structure and function of the leveling tool 3 will be given with reference to FIG.

3 is a partially cutaway view of the YY direction side view of FIG. 1, and the same reference numerals as those in FIG.
The flat plate pieces 211 and 211 of the right-sided quadrilateral frame 2 are inserted into the grooves 413c between the upper and lower wall surfaces 413a and 413b on the plate-like auxiliary tool 4 fastened to the support columns 5 and 5 by nuts 414 and 414 from above and below. It is fixed appropriately at 415. In this case, when the column must be installed at a position away from the frame 2, the right-sided quadrilateral frame 2 is moved to a certain position by simply shortening the insertion length of the flat plate piece. In this case, the moving direction can be kept constant, and wide area smoothing and leveling can be achieved by simply moving the frame 2 in parallel.

FIG. 4 is a side view corresponding to the cross-sectional view of the leveling tool 3 shown in FIG. 2, and the same reference numerals as those in FIGS.
The flat plates 32a and the like of the flat plate group 32 of the leveling tool 3 according to the present invention are in an upright state as a processing operation before the sliding bar 31 of the leveling tool is slid in contact with the sliding surfaces 21B and 21B. The flat plate 32a and the like are repeatedly applied to the ready-mixed ready-mixed concrete immediately after being placed, and the effect of facilitating kneading, leveling, and degassing mainly by impacting the flat plate 32a, When the thicknesses of 32b and 32c are increased, the bite into the ready-mixed concrete is deteriorated, and the above effect is hardly exhibited. Further, in the case of the flat plate group 32 in which flat plates having a small thickness are spaced apart from each other, the effect per unit area of ready-mixed concrete is not good. On the contrary, the use of ready-mixed concrete or a group of flat plates 32 that can infiltrate its components into a narrow flat plate gap also gives a shearing force to the ready-mixed concrete, thereby further improving the effect. Here, the narrow gap refers to a gap to which the ready-mixed concrete itself, fine particle components in ready-mixed concrete, liquid components such as flax and the like can enter.

  FIG. 5 is a front view of a typical leveling tool 3 used in the present invention, and the same reference numerals as those in FIG. A flat plate group 32 is integrally attached to the center portion of the sliding bar 31 in such a manner as to hang down from the sliding bar. Preferred dimensions are as described above.

FIG. 6 is a partially cutaway side view showing another embodiment when the support column 5 is screwed and fixed to the plate-like auxiliary tool 4, and the same reference numerals as those in FIG.
As shown in FIG. 1, when the plate-like auxiliary tool 4 having the support 5 inserted therein is simply sandwiched and fixed by the upper and lower nuts, the support 5 grips and fixes the right-sided quadrilateral frame body 2 and the leveling tool. However, the stress is concentrated in a short range where the plate-like auxiliary tool is fixed, which is not preferable as a support column. The countermeasure is to disperse the bending stress that the strut receives.

The new combination of the plate-like auxiliary tool, the support column, and the upper and lower nuts shown in FIG. 6 provides a means for solving the above-mentioned problems, and will be described in detail below.
The upper surface of the lower nut 414 screwed to the column 5 has a nut structure in which the central axis is the same as that of the nut 414 and the column is screwed along the central axis. The tubular screw portion of the lower nut with the tubular screw formed by connecting the tubular screw 414c having the above length and the outer diameter that can be inserted into the column insertion through hole 411 of the plate-like auxiliary tool 4 is inserted into the plate-like auxiliary tool 4. The plate-like auxiliary device 4 is screwed into the lower nut and the column with the tubular screw, and the upper nut 414a is screwed to the lower nut portion and the tubular screw portion, and is tightened to the desired position of the column 5. The upper nut 414b is clamped by tightening from the upper end of the tubular screw portion, and the bending stress received by the load of the plate-like auxiliary tool 4 or the like is also widely dispersed in the support column, and the support column 5 may be bent or deformed. Considerably improved

FIG. 7 is a cross-sectional view of a state in which the support column 5 is inserted into the temporary standing tool 6 as an example that can be conveniently used when performing the operation of attaching the plate-like auxiliary tool 4 while the support column 5 is erected. The figure is shown.
The temporary standing tool 6 is a structure in which a tubular body which can be screwed or closely inserted into a vertical plate on a surface having a desired width and can be easily separated is provided on the surface in contact with the floor base. is there.
The temporary installation tool 6 may be difficult to install after laying the reinforcing bars depending on the size of the flat table, and if large, it is necessary to install the temporary installation tool 6 before the laying. Moreover, when removing the support | pillar 5 after cast-in-place concrete placement, it will be inevitable that it will remain in the concrete.

  FIG. 8 shows another example of a temporary standing tool. A column is inserted into a temporary standing tool 7 in which a tubular body similar to the above case is erected on a three-legged base. A partially cutaway view of the state is shown. In this case, since it has three legs, it is superior to the temporary standing tool 6 in that it can be used even if there is a slight unevenness in the ground for flooring.

  The technology according to the present invention provides a construction method for constructing a new floor surface layer portion that is smooth and has a very small unevenness on a wide floor floor, and that is uniformly horizontal throughout the entire area. In addition, it can be suitably used for the construction of the floor surface layer portion related to the renovation with many unevenness.

The partial cutaway figure of the perspective view of the apparatus for floor surface layer construction using raw concrete. FIG. 2 is a partially cutaway view of the XX cut sectional view of FIG. 1. The partially cutaway view of the YY direction side view of FIG. The side view equivalent to sectional drawing of the leveling tool of FIG. Front view of leveling equipment The partially cutaway side view of the state which screwed and fixed the support | pillar to the plate-shaped auxiliary tool. FIG. 4 is a partially cutaway cross-sectional view of a state in which a support column is erected on a support column standing tool. FIG. 4 is a partially cutaway cross-sectional view of a state in which a support column is erected on a support column standing tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ..... Equipment for floor surface layer construction 2 ...... Right-sided quadrilateral frame 21, 22 ...... Rectangular wall 21a. , 22a... Long side on the lower side of the wall surface body 22b, 22b... Long side on the upper side of the wall surface body 21B, 22B... Sliding surface 2A.・ ・ ・ ・ ・ Closed annular flat plate 211, 221 Flat plate 3 ·································································・ ・ ・ ・ ・ ・ ・ ・ ・ Plate group 32a, 32b, 32c ・ Plate 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Plate-shaped auxiliary tool 41 ・ ・ ・ ・ ・ ・ Plate-like body 411 ・·························································································································· Middle, upper and lower side wall surface 4 3a: upper wall surface 413b: lower wall surface 413c: groove 413d: edge of plate 414 ... Lower nut 414a ... Upper nut 414b ... Upper nut 414c ... Tube screw 415 ... ······························ 5 ··········································································

Claims (8)

In the construction method of laying reinforcing bars and placing ready-mixed concrete on the floor surface for flooring, leveling the surface and forming a smooth and horizontal floor surface part with the desired thickness,
(1) The leveling of the ready-mixed concrete surface is performed by placing a part of the ready-mixed concrete first, preliminarily leveling it, or directly on the rebar without placing these. A plurality of “arounds” of the ready-mixed concrete ingots are placed at desired intervals, and a right-sided quadrilateral frame is placed on the plurality of “arounds” via the plurality of “arounds”. Including the work of leveling the ready-mixed concrete placed in a right-angled quadrilateral frame with a leveling tool passed over one set of opposite sides,
(2) The right-angled quadrilateral frame is a frame composed of two sets of opposing high-rigidity rectangular wall surfaces, and each long side constituting each wall surface is leveled, and each wall surface is When used in a vertically standing state, each of the long horizontal surfaces on the upper side of at least one pair of facing rectangular wall surfaces of the frame body constitutes a sliding surface for sliding the leveling tool, and the rectangular shape Closed annular flat plate pieces that horizontally extend outward from the long side on the lower side of the wall surface to form the hook-shaped ribs of the right-sided quadrilateral frame body, or the lower side of at least one pair of each rectangular wall surface that faces each other A flat plate piece that horizontally extends outward from the long side of the side to form a rib of the rectangular wall surface,
(3) The leveling tool is integrally attached to the sliding rod with a structure in which a plurality of the sliding rods hang down in parallel with a gap between the sliding rod and the central portion thereof. It consists of a flat plate group having a length that does not exceed the distance and a width that is the same as the height of the right-angled quadrilateral frame,
(4) Place the right-sided quadrilateral frame on the “concrete” made of ready-mixed concrete with its flat plate abutting, and cast ready-mixed concrete to fill the space between the “approach” and level it along the sliding surface. A construction method for the surface layer using fresh concrete, which is a construction method that includes the process of sliding the bar of the jig and leveling the ready-mixed concrete with a group of flat plates. In the construction method of laying reinforcing bars and placing ready-mixed concrete on the floor surface for flooring, leveling the surface and forming a smooth and horizontal floor surface part with the desired thickness,
(1) The leveling work on the surface of the ready-mixed concrete includes the work of sliding the leveling tool in contact with the ready-mixed concrete along two sliding surfaces that are held at the same height.
(2) The two sliding surfaces are formed of at least one pair of rectangular wall surfaces facing each other in a right-sided quadrilateral frame body configured by horizontally arranging the long sides of the two sets of high-rigidity rectangular wall surfaces facing each other. It consists of each long horizontal plane on the upper side,
(3) The holding of the two sliding surfaces for sliding the leveling tool extends horizontally from the long side on the lower side of each rectangular wall surface constituting the right-sided quadrilateral frame body to the right side. It extends horizontally outward from the long side on the lower side of the rectangular wall surface that needs to be held by at least the pillar among the closed circular flat plate pieces that form the bowl-shaped ribs of the shape frame body or each rectangular wall surface body Including holding the flat plate pieces that form the ribs of the rectangular wall body, and holding by a column upright on the floor surface for flooring,
(4) The horizontal and equal height holding by the support is the holding by the plate-like auxiliary tool that is screwed to the support and is sandwiched between the upper and lower nuts positioned at a desired height.
(5) The plate-like auxiliary tool has a portion formed with through-holes for supporting pillars that are orthogonal to both the upper and lower outer surfaces, and an opening at the end edge that is parallel to both the upper and lower outer surfaces and leaves the upper and lower walls. A flat plate-like body having a portion formed with a groove having a depth into which the flat plate piece can be inserted, and a screw for pressing and fixing the flat plate piece to be inserted into one wall surface forming the groove of the flat plate-like body Is screwed in,
(6) The upright position of the support is two or more positions along the outside of the flat plate piece that needs to be held so that the upright of the support is not disturbed by the contact between the support and the reinforcing bar,
(7) The upright of the support is an upright obtained by connecting and fixing each positioned support to a right-angled quadrilateral frame body via a plate-like auxiliary tool and a flat plate piece,
(8) The leveling tool has a sliding rod and a plurality of pieces that hang down in parallel with each other along the sliding rod at the center thereof, and are integrally attached to the sliding rod. A flat plate group having a length that does not exceed the height and the width of the right-angled quadrilateral frame and the same dimension,
(9) The construction method using the leveling tool is a construction method including a step of sliding the leveling tool sliding rod along the sliding surface and leveling the ready-mixed concrete with the flat plate group.
A construction method for the surface layer of ready-mixed concrete floors.   The method for constructing a surface layer portion using ready-mixed concrete according to claim 2, wherein the ready-mixed concrete is for high-strength or ultra-high-strength concrete having a low water / cement ratio.   The method for constructing a surface layer portion using ready-mixed concrete according to claim 2 or 3, wherein the leveling operation of the ready-mixed concrete surface is performed through a net having high bending resistance that is laid on the ready-made concrete surface.   Before the leveling work on the surface of the ready-mixed concrete, the leveling tool provided with a vibration function is applied to the raised portion of the ready-mixed concrete before the leveling tool is slid along the sliding surface. The construction method of the surface layer part using ready-mixed concrete according to any one of claims 2 to 4 which gives vibration.   The method for constructing a surface layer portion using a ready-mixed concrete according to any one of claims 2 to 5, wherein the highly rigid rectangular wall surface is made of steel or an aluminum alloy.   The upper and lower nuts of the plate-like auxiliary tool into which the support post is inserted and penetrated have the same center axis as the lower nut on the upper surface of the lower nut screwed to the support post. A nut structure in which a post is screwed, and a lower nut with a tubular screw formed by connecting a tubular screw having a length longer than the thickness of the plate-like auxiliary tool and an outer diameter that can be inserted into the post-insertion through hole of the plate-like auxiliary tool. Tubular screw part is inserted into the plate-shaped auxiliary tool, and the plate-shaped auxiliary tool is clamped between the lower nut part and the tubular screw part, and the upper nut is tightened and clamped, and the pipe is screwed to the desired position The method for constructing a floor layer using a ready-mixed concrete according to any one of claims 2 to 6, wherein clamping is performed by tightening from an upper end of a tubular screw portion by an upper nut screwed to a lower nut and a support column.   The ready-mixed concrete according to any one of claims 2 to 7, wherein the upright work of the support is performed by detachably inserting the lower end of the support into a tubular body vertically extending from the center of the pedestal placed on the floor surface for flooring. Construction method of the floor layer used.

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