JPH0676735B2 - Block for leveling concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a leveling method used when pouring concrete onto a formwork to obtain a reinforced concrete disk-like body in order to build a roof or floor of a building. For blocks.

[Conventional technology]

Conventionally, as a leveling block as described above, as shown in Japanese Patent Laid-Open No. 61-98867, it is formed in a shape in which the horizontal cross-sectional area of the upper and lower portions is smaller than the horizontal cross-sectional area of the vertical middle portion. However, there is one in which the intermediate portion is formed to have a height equivalent to the thickness of the concrete to be cast, and to have a size that fits into the mutual spacing of the parallel reinforcing bars of the reinforcing bar assembly.

The leveling blocks are installed in appropriate places on the concrete formwork, with the middle part fitted between the reinforcing bar assembly bar arrangements, and a number of them are installed, and the concrete is poured onto the formwork, and Embedded with rebar assembly,
It is used for the purpose of the thickness of poured concrete, and is used to easily equalize the thickness of each part of concrete.

[Problems to be Solved by the Invention]

Since the conventional concrete leveling block configured as described above is an integrally molded product of concrete, it is heavy and difficult to handle, and in addition,
There was a problem that the degree of freedom for the horizontal, upper, and lower bar arrangements was small.

The present invention solves the above-mentioned problems to reduce the weight,
Workability such as transportation and mounting is improved, and workability at the time of mounting is improved by dividing into multiple members,
Also, the degree of freedom for the reinforcing bar assembly can be increased,
Another object is to provide a concrete leveling block that can be surely embedded and fixed in concrete.

[Means for Solving the Problems]

The concrete leveling block according to the present invention is
With a lower rebar holding part for holding a lower rebar embedded in concrete to be cast on a concrete formwork, a lower base fixed on the concrete formwork, and an upper rebar holding part for holding an upper rebar embedded in the concrete, And a block main body integrally formed with a plurality of legs that protrude below the holding portion and are fixed to the lower base. The main body and the lower base are each formed of a synthetic resin molded product, and the main body and The height at which the lower stand is fixed is almost the same as the thickness of the concrete to be poured.

[Action]

The leveling block of the present invention has a lower stand and a block body, and after constructing a concrete formwork, nails the lower stand having lower rebars held in lower rebar holding portions at appropriate places on this formwork and adheres them. Then, the reinforcing bar assembly is provided on the formwork by arranging the reinforcing bars vertically, horizontally, and above and below, and further, the block main body is fixed on the lower stand so that the upper reinforcing bars are attached to these holding portions. By holding the block body holding it or holding the upper rebar on the lower stand, and pouring concrete onto the formwork to almost the same height as the upper surface of the main body in this state, it is easy to use the upper surface of the main body as a mark. The thickness of concrete can be made uniform in each part. And, in the present invention, since the lower table and the block body are made of a synthetic resin molded product, the weight is lighter than that of the conventional concrete leveling block, and after the lower table is fixed on the formwork,
By fixing the main body to these, even if there is a slight error in the position of the reinforcing bar assembly, the legs of the main body are bent, or if there are many legs, some of the legs The main body can be easily fixed on the lower table by cutting off, and therefore the workability at the time of transportation and assembly is good, and the degree of freedom for the bar arrangement is large. And since the lower table is fixed to the formwork when pouring concrete, it does not move unintentionally, and since the lower table, the lower and upper reinforcing bars held by the main body are embedded in the concrete,
The lower stand and main body will not come off when the concrete form is removed after solidification of concrete. Moreover, the lower stand and the lower and upper rebars held by the main body can be used for attaching members such as roof boards and ceilings.

〔Example〕

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

In FIGS. 1 to 4, (1) is a lower table, (2) is a block body, and (3) is a lid, which are integrally formed by synthetic resin such as polypropylene or polyethylene.

The lower base (1) is shown in FIGS. 1, 2 and 4 to 7.
As shown in the figure, a lower reinforcing bar holding portion (4) is formed in a central portion in a substantially inverted box shape, and a pair of notches (4b) opening to the lower surface are formed in the central portion of a long side wall (4a) of the holding portion (4). ) Are formed to face each other. From the side wall of the lower reinforcing bar holding part (4) to the outer peripheral side,
Six support parts (5) centering on the center of the lower reinforcing bar holding part (4) are radially projected at equal angular intervals to form a support part (5).
Fitting portions (6) are provided at the respective tips of the. The fitting portions (6) are connected in threes by connecting portions (7) in an arc shape centered on the center of the lower reinforcing bar holding portion (4), and the connecting portions (7) are located at positions corresponding to the notches (4b). It is divided into two by the interval arranged at. The fitting part (6) is formed with a fitting convex part (6b) protruding upward through the step (6a).

As shown in FIGS. 1 to 3 and FIGS. 8 to 10, the block body (2) has a box-shaped upper reinforcing bar holding portion (8) formed in a central portion thereof. A pair of notches (8b) opening in the upper surface are formed facing each other in the central portion of the short side wall (8a) of 8). An arcuate connecting portion (10) centered on the center of the upper reinforcing bar holding portion (8) is provided on the outer peripheral side of the side wall of the upper reinforcing bar holding portion (8) via a support portion (9). The connecting portion (10) is divided into two parts by an interval arranged at a position corresponding to the notch (8b), and has an outer diameter equal to the outer diameter of the connecting portion (7) of the lower table (1). There is. Six legs (11) extending from the connecting portion (10) of the main body (2) to the fitting portion (6) of the lower base (1) at equal intervals in the circumferential direction are equal in length to each other. Is projected. Legs (11) that come into contact with the step (6a) of the fitting part (6)
The fitting recess (11b) is formed upward from the lower end (11a) of the fitting, and the fitting projection (6b) between the fitting recess (11b) and the fitting part (6).
Are fitted and the main body (2) is fixed on the step (6a) of the lower table (1).

As shown in FIGS. 1 to 3, the lid body (3) is provided with an upper reinforcing bar on the lower surface of a flat rectangular cover plate (3a) covering the upper opening of the upper reinforcing bar holding portion (8) of the main body (2). A fitting frame (3b) that fits on the inner circumference of the side wall of the holding portion (8) is formed. Incidentally, the lid body (3) is destroyed by being hit from above while being attached to the upper reinforcing bar holding portion (8).

11a and 11b show the lower rebar. In the lower rebar (12), the upright portions (12b) are bent from both ends of the intermediate portion (12a), and both end portions of the same length from the lower end of the upstanding portion (12b) are parallel to the intermediate portion (12a) ( 12c) is bent.

12 a, b, 13 a, b and 14 a, b show different upper reinforcing bars, respectively. Upper bar (1
3), the downward portions (13b) are bent from opposite ends of the intermediate portion (13a) in opposite directions to hang down, and the downward portions (13b)
Both ends (13c) shorter than this are bent in parallel with the middle part (13a) from the lower end of the. The upper reinforcing bar (13) shown in FIGS. 13 (a) and 13 (b) has downward portions (13b) of different lengths hung from both ends of the intermediate portion (13a).
4 The upper rebar (13) shown in Figs. A and b has a downward facing portion (13) that is inclined so that the lower ends of the intermediate portion (13a) come close to each other.
b) is bent. In addition, in Fig. 13 a, b,
14 Shapes of the upper rebar (13) shown in Figs.
It is similar to that shown in FIG. 12 a, b, and FIG. 13 a, b,
The same reference numerals as those in FIGS. 12A and 12B in FIGS. 14A and 14B indicate corresponding portions.

Next, the use of the level setting block of the embodiment including the above-mentioned respective parts will be described.

As shown in FIG. 17, a large number of temporary columns (14) are erected,
A frame plate (15) of a temporary concrete formwork made of plywood or the like is fixed on these columns (14) by inclining vertically. After that, the middle portion (12a) of the lower reinforcing bar (12) is press-fitted into the notch (4b) provided in the long side wall (4a) of the lower reinforcing bar holding portion (4) of the lower table (1), and the lower reinforcing bar ( 12) lower stand (1)
And the upright part (12b) of the lower rebar (12).
And both ends (12c) are projected to the outside of the lower reinforcing bar holding part (4) and arranged at the interval of the connecting part (7) (see FIGS. 2 and 4). In this state, the connecting portion (7) is supported on the frame plate (15) and fixed to the frame plate (15) by nailing or the like. Next, as shown in Figs. 17 and 18, vertical and horizontal bar arrangements (16
A) and (16b) are made orthogonal to each other and are arranged in a plurality of upper and lower stages to form a reinforcing bar assembly (16) on a frame plate (15). In this case, the lower stand (1) has a large number of vertical and horizontal bars (16a), (1
6b) shall be placed at an appropriate interval inside. further,
The fitting recesses (11b) provided on the leg parts (11) of the block body (2) are fitted from above into the fitting projections (6b) provided on the fitting part (6) of the lower table (1), respectively. By supporting the lower end portion (11a) of the leg portion (11) on the step (6a) of the fitting portion (6), the main body (2) is fixed on the lower table (1). Then, the intermediate portion (13a) of the upper reinforcing bar (13) shown in FIGS.
The upper rebar (13) is held in the main body (2) by press-fitting into the notches (8b) provided in both side walls (8a) of the upper rebar holding portion (8) of the main body (2), and the upper rebar is also held. The downward portion (13b) and both end portions (13c) of the (13) are projected outside the upper reinforcing bar holding portion (8) and are arranged in the space of the connecting portion (10) (second).
As shown in FIGS. 3A and 3B), the leveling block (17) is assembled on the form (15). In this case, the upper rebar (13) is located directly above the middle part (12a) of the lower rebar (12).
It is preferable that the intermediate portions (13a) of the above are arranged in parallel.
Both ends (12c) and (13c) of the lower and upper reinforcing bars (12) and (13) are supported above and below any of the vertical and horizontal reinforcing bars (16a) and (16b), and these reinforcing bars ( 16a) and (16b) are positioned,
The bar arrangements (16a) and (16b) and the lower and upper reinforcing bars (12) and (13) may be fixed to both ends (12c) and (13c) by appropriate means. Further, as shown in FIG. 15 and FIG. 16, the fitting frame (3b) of the lid body (3) is fitted onto the side surface of the upper reinforcing bar holding portion (8) of the main body (2) from above to cover the lid body (3). The cover plate (3a) covers the upper opening of the upper reinforcing bar holding portion (8). In this case, it is preferable that the upper surfaces of the cover plate (3a) and the main body (2) are located on the same plane.

In addition, in FIG. 17 and FIG. 18, the upper reinforcing bar (1
The case of using 3) was explained, but the rebar assembly (16)
Depending on the construction of the above, the upper reinforcing bar (13) shown in FIGS. 13a and 13b or 14a and 14b is used. Alternatively, the upper reinforcing bar (13) may be fitted in the upper reinforcing bar holding portion (8) in advance and then the block body (2) may be fitted in the lower stand (1). Furthermore, when there is a slight error in the positions of the reinforcing bars (16a) and (16b) of the reinforcing bar assembly (16), when the legs (11) of the block body (2) interfere with the reinforcing bars, As long as the number of interfering legs (11) is a small number such as one or two, they may be bent slightly or cut by an appropriate means, and the position of the block body (2) with respect to the lower table (1) may be set to these positions. Rotate around the axis of, that is, lower rebar (1
The upper reinforcing bar (13) may be angled so that it crosses the upper reinforcing bar (13) instead of being parallel to it so as to avoid interference with the leg (11).

As for the leveling blocks (17) assembled on the frame plate (15) of the concrete formwork as described above, a large number of blocks are arranged vertically and horizontally with mutual intervals. After that, by pouring concrete (18) onto the frame plate (15), the lower stand (1) and the main body (2) of the block (17), the lower and upper reinforcing bar holding portions (4), (8) thereof. The lower and upper rebars (12) and (13) that are held by the above, the parts projecting from the holding parts (4) and (8), and the rebar assembly (16) are embedded in the poured concrete (18) to make concrete. Is placed in a board shape. In this case, the concrete (18) has a thickness equal to or slightly smaller than the height of the blocks (17) with the upper surface of the block (17) as a mark. The frame plate (1
A temporary weir board is raised around the area 5) to prevent the concrete (18) from flowing out of the frame board (15). Further, when the concrete (18) is placed, its upper surface is positioned slightly below the upper surface of the main body (2) so that the concrete (18) does not flow into the upper reinforcing bar holding portion (8). (3) may be omitted, and by further attaching a sheet or the like in place of the lid body (3) to the upper surface of the block body (2) in advance, the concrete (18) is fixed to the upper reinforcing bar holding portion (8). You may not let it flow in.

The concrete (18) immediately after being placed on the frame plate (15) has fluidity, but the lower base (1) of the block (17) is fixed to the frame plate (15) and the main body (2) is also fixed. Since the lower and upper reinforcing bars (12) and (13) are supported by the reinforcing bars (16a) and (16b) of the reinforcing bar assembly (16), the block (17) tries to flow down the concrete (18). Almost no displacement even under load. And block (1
7) gives resistance to the flow of concrete (18),
Helps prevent thickening of the sloping bottom concrete (18).

When the concrete formwork including the frame plate (15) is removed after the concrete (18) is hardened and the upper reinforcing bar holding portion (8) of the main body (2) is covered with the lid body (3) or sheet. Then, the lid (3) is struck to break it or peel off the sheet to remove them. By doing so, the middle portion (13a) of the upper rebar (13) is provided in the upper rebar holding portion (8) having a substantially box shape.
Since the part protruding from the upper reinforcing bar holding part (8) of the upper reinforcing bar (13) is embedded in the concrete (18),
Anchor (not shown) on the middle part (13a) of the upper rebar (13)
A support member (19) such as a metal rafter supported on the concrete (18) is fixed via the support member (1).
The roof (20) can be mushroomed on 9). In addition, there is an intermediate part (12a) of the lower reinforcing bar (12) in the lower reinforcing bar holding part (4) having an almost inverted box shape, and a portion protruding from the lower reinforcing bar holding part (4) of the lower reinforcing bar (12) is made of concrete ( Since it is embedded in 18), the ceiling can be attached to the middle part (12a) of the lower rebar (12) via a suspender or the like.

In the above embodiment, the fitting protrusion (6b) is provided on the lower table (1), and the fitting recess (11) is formed on the leg (11) of the block body (2).
Although b) is provided and these are fitted, the present invention provides a fitting concave portion on the lower base and a fitting convex portion on the leg portion of the block main body, and by fitting these, the block main body is fitted. The lower base and the lower base may be positioned and fixed in the height direction, and the number of legs of the block body can be appropriately increased or decreased.

Further, in the above-mentioned embodiment, the case where the leveling block is used for the roof is described, but the leveling block according to the present invention is not limited to the one having the slope, and can be applied to a horizontal roof or floor.

〔The invention's effect〕

As described above, according to the present invention, since the lower base having the lower rebar holding portion, the upper rebar holding portion, and the block main body in which the leg portions project below the holding portion, are made of concrete. Reinforcing bar assembly by nailing the lower base holding the lower rebars in the lower rebar holding parts in appropriate places on the formwork, fixing them by gluing, and then arranging vertically, horizontally and above and below the formwork Furthermore, the block main body is fixed on the lower table so that the upper reinforcing bars are held by these holding portions, or the block main body holding the upper reinforcing bars is fixed on the lower table, and in this state, concrete is placed on the formwork. By pouring to the same height as the upper surface of the main body, the thickness of the concrete can be easily made uniform in each part by using the upper surface of the main body as a mark. Further, according to the present invention, since the lower table and the block body are made of a molded product of synthetic resin, the weight is lighter than that of the conventional concrete leveling block, and after the lower table is fixed on the formwork, ， By fixing the main body to these, even if there is a slight error in the position of the reinforcing bar assembly bar, if the legs of the main body are bent or if there are many legs, some legs By cutting off the portion, it can be easily fixed to the main body on the lower table, and therefore workability during transportation and assembly is good, and the degree of freedom for the bar arrangement is large. And since the lower table is fixed to the formwork when pouring concrete, it does not move unintentionally, further,
Since the lower stand, the lower and upper rebars held by the main body are embedded in the concrete, the lower stand and the main body do not come off when the concrete formwork is removed after the solidification of the concrete. Moreover, the lower base and the lower and upper reinforcing bars held by the main body can be used for attaching members such as a roof plate and a ceiling.

[Brief description of drawings]

1 is an exploded front view showing a concrete leveling block according to an embodiment of the present invention, FIG. 2 is a front view of the same assembled state, FIGS. 3 and 4 are the same plan view and bottom view, FIG. FIG. 5 is a plan view of the lower base, and FIGS. 6 and 7 are fifth views.
Sectional drawing which follows the VI-VI line and VII-VII line of the figure, FIG. 8 is a top view of a block main body, FIG. 9 and FIG. 10 are FIG.
Upper sectional view taken along line IX-IX and line XX, FIG. 11 a, b
Is a front view of the lower rebar, a plan view, FIG. 12 a, b, FIG. 13 a, b,
14 a and b are front and plan views showing different upper reinforcing bars, respectively, and FIGS. 15 and 16 are sectional views corresponding to FIGS. 9 and 10 for explaining the attachment state of the lid. , First
FIG. 17 is a vertical cross-sectional view of the upper part of the building using the concrete leveling block according to the present invention, and FIG. 18 is a partial plan view of the concrete leveling block with the leveling block fixed. (1) …… Lower stand, (2) …… Block body, (3) …… Lid body, (4) …… Lower rebar holding part, (4a) …… Sidewall, (4b) …… Notch, (5) …… Supporting part, (6) …… Mating part, (6a) …… Step, (6b) …… Mating convex part, (7) …… Connecting part, (8) …… Upper rebar holding part, ( 8a) …… side wall, (8b) …… notch, (9) …… supporting part, (10) …… connecting part, (11) …… leg part, (11a) …… bottom part, (11b) …… Mating recess, (12) …… Lower rebar, (12a) …… Middle part, (12b) …… Upright part, (12c) …… End part, (13) …… Upper bar, (13a) …… Middle Part, (13b) ... downward part, (13c) ... end part, (14) ... prop, (15) ... frame plate of concrete formwork, (16) ... rebar assembly, (16a), (16b) …… Vertical and horizontal bars, (17) …… Leveling block, (18) …… Concrete.

Claims (3)

[Claims] 1. A lower rebar holding portion for holding a lower rebar embedded in concrete to be cast on a concrete form, holding a lower stand fixed on the concrete form and an upper rebar embedded in the concrete. An upper rebar holding portion, and a block main body integrally formed with a plurality of leg portions protruding below the holding portion and fixed to the lower base,
The main body and the lower base are each formed of a synthetic resin molded product, and the height at which the main body and the lower base are fixed is made substantially equal to the thickness of the concrete to be placed. For blocks. 2. A lower base is formed with a lower rebar holding portion in a substantially inverted box shape, and a middle portion of the lower rebar is held on a side wall of the holding portion.
Formed by facing a pair of notches, the fitting portion is provided at the tip of the supporting portion radially projected on the outer periphery of the lower reinforcing bar holding portion, and these fitting portions are appropriately connected by a connecting portion, The block body forms a substantially box-shaped upper rebar holding portion, and a pair of notches for holding an intermediate portion of the upper rebar are formed on the side wall of the holding portion so as to face each other. A plurality of legs are arranged to face the fitting portion of the lower table via a connecting portion, and fitting portions are provided at the lower ends of these legs so as to fit into the fitting portions of the lower table. The leveling block for concrete according to claim 1. 3. The concrete leveling block according to claim 2, further comprising a removable lid body which is fixed to the main body of the block body and covers the upper reinforcing bar holding portion of the block body.