JPH0797835A - Spacer block for reinforcement arrangement and reinforcement arrangement method - Google Patents

Abstract

PURPOSE:To properly hold a reinforcement at the preset position, easily fit the reinforcement to a spacer block, and prevent the spacer block from sinking into the bed thereof, even when the bed is soft. CONSTITUTION:The intersection of orthogonal reinforcements 2a and 2b is provided with clamping sections 6 to hold the reinforcements 2a and 2b along each direction, unidirectional or bidirectional reinforcement rests 8 externally extended at both inlet ends of open sections 7 formed at the upper center of the sections 6 for the reinforcements 2a and 2b, and support legs 10 to bear the sections 6. Also, a level difference approximately corresponding to the diameter of the reinforcements 2a and 2b is formed between support positions of the sections 6 for one reinforcement 2b and support sections of the sections 6 for the other reinforcement 2a. Furthermore, the open sections 7 have a gap smaller than the diameter of the reinforcements 2a and 2b, and are expanded via the insertion of the reinforcements 2a and 2b placed on the rests 8 into the sections 6, and the reinforcements 2a and 2b are thus coupled to the sections 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer block for bar arrangement and a bar arrangement method. In particular, the present invention relates to a reinforcing bar spacer block that supports a mesh reinforcing bar buried in a concrete layer by the reinforcing bar spacer block, and a reinforcing bar method.

[0002]

2. Description of the Related Art Conventionally, commercially available spacer blocks for floor reinforcement are made of steel rods as shown in FIG. 5 (floor bolster type for floors) and seated as shown in FIG. 6 (high chair type). Alternatively, there is a die made of mortar and the like, and each is appropriately used according to the convenience. Here, the floor bolster type spacer block for floor reinforcement shown in FIG. 5 is formed by joining the tops of a plurality of steel bar pieces 13 that are bent in a mountain shape at intervals at the lower end of the steel bar 12. The rebar is placed on the steel rod 12. Further, in the high chair type spacer block shown in FIG. 6, the lower end of the concave portion 14a of the inverted U-shaped rod-shaped steel rod piece 14 having the concave portion formed at the top is supported by the inverted U-shaped rod-shaped steel rod piece 15. The rebar is placed on the recess 14a. In addition, dice-shaped (not shown),
Place the rebar on a cubic spacer block.

[0003]

In each of the various spacer blocks described above, since the reinforcing bars are simply placed on the spacer blocks, the reinforcing bars have a poor anchoring property to the spacer blocks, and the reinforcing bars cannot be used as spacer blocks. There is a problem that the placed position moves. Of these spacer blocks, the floor bolster type and high chair type cause almost no problems when they are used directly in contact with a solid dam such as a plywood formwork, but recently there have been some designs. There is a problem when it is used in the rooftop floor insulation and waterproofing method, which is being incorporated into the specifications.
That is, when holding the reinforcing bar for reinforcing bars to prevent cracking of concrete that presses in the foamed resin insulation plate for external insulation (such as expanded polystyrene), the spacer block sinks because the base surface is soft, It is difficult to use more than expected. Also, the floor bolster type or high chair type is not used because it damages the heat insulating plate, but the one with a steel plate attached to the bottom of the high chair type or the mortar dice type is used, but as mentioned above. Since the reinforcing bar for reinforcement is simply placed on the spacer block, every time the worker walks on the reinforcement bar, the reinforcing bar floats up and easily disengages as a spacer block. There is a problem that the function of will not be fulfilled.

The present invention solves such a problem, the reinforcing bar for reinforcing bar can be surely held in a fixed position, the reinforcing bar for reinforcing bar is easily attached to the spacer block, and the lower ground of the spacer block is soft. Even in the case, it is an object of the present invention to provide a spacer block for bar arrangement and a bar arrangement method that do not sink into the underlying surface.

[0005]

In order to solve the above-mentioned problems, a spacer block for reinforcing bars according to the present invention has a holding portion for holding a reinforcing bar and an outer side at both ends of an opening formed in the center of the upper portion of the holding portion on the entrance side. A reinforcing bar receiver extending in one direction and a supporting leg for supporting the sandwiching portion, the opening having a spacing smaller than the diameter of the reinforcing bar, and inserting the opening by inserting the reinforcing bar placed on the reinforcing bar receiver into the sandwiching portion. It is configured by expanding and inserting the reinforcing bar into the holding portion. Here, the sandwiching part positions and supports the reinforcing bar, and it is preferable to directly contact the inside of the clamping part to grip the reinforcing bar. For example, the reinforcing bars pushed into the arc-shaped holding portion are fixedly held. However, as long as the reinforcing bars can be positioned, there is no problem even if there is a gap between the holding portion and the reinforcing bars to some extent. The inner cavity that supports the reinforcing bars of the sandwiching portion can have an arc shape, a U shape, a V shape, or the like. Further, the reinforcing bar receiver temporarily receives the reinforcing bar regardless of the length of time before the reinforcing bar is inserted into the clamping section, facilitates positioning, and guides the reinforcing bar into the clamping section. In addition, when the opening formed in the center of the upper part of the sandwiching portion is expanded for inserting the reinforcing bar, it serves to facilitate the expansion of the opening having an interval smaller than the diameter of the reinforcing bar. After the reinforcement is inserted, the widened opening is reduced to prevent the reinforcement from slipping out. The support leg that supports the holding portion may be, for example, a single cylindrical column or an individual column as long as it has a structure for fixing the sandwiching tools to each other. Further, the sandwiching tool in the reinforcing bar spacer block may not be directly supported by the supporting legs, but may be supported by the supporting legs via a substrate. Further, in the holding portion of the reinforcing bar spacer block of the present invention, the length of the diameter of the reinforcing bar is approximately between the supporting position of the holding portion of one reinforcing bar and the supporting position of the holding portion of the other reinforcing bar which are orthogonal to each other. It is preferable to provide a corresponding height difference. This is because, in the case of the mesh rebar, the orthogonal rebars are usually joined to each other vertically by welding or the like, which is suitable for supporting and arranging the mesh rebar. Also, in the case of mesh rebar, since orthogonal rebars are joined to each other, it is not possible to prevent the rebar from slipping out by providing an opening with a distance smaller than the diameter of the rebar and the diameter of the rebar and expanding / reducing the opening. ,
This may be done for one of the orthogonal reinforcing bars, but it will be more reliable if done for both.

The reinforcing bar spacer block of the present invention includes a holding portion for holding the reinforcing bar, a reinforcing bar receiver which extends inwardly from both upper sides of the holding section and has an opening at the tip, and a support for supporting the holding section. A leg and the opening has a space smaller than the diameter of the reinforcing bar, and the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver into the clamping section so that the reinforcing bar is fitted into the clamping section. It is composed of Since the reinforcing bar receiver of the reinforcing bar spacer block of the present invention extends inward from both upper sides of the holding portion, the reinforcing bar receiver can be configured to prevent the reinforcing bar from coming off. For example, as shown in FIG. 4, the inner tip of the reinforcing bar receiver is formed so as to hang down in the direction of the inner cavity of the holding portion. The lower part of the supporting leg of the spacer block for reinforcing bar of the present invention described above is configured to have a supporting plate, and it is possible to prevent the supporting leg from sinking when the lower ground of the spacer block is soft.

Further, the reinforcing bar using the spacer block for reinforcing bars of the present invention includes a pinching portion for pinching the reinforcing bars in each direction at the intersection of the orthogonal reinforcing bars, and a one-way or two-way pinching portion of the pinching portion. A reinforcing bar receiver connected to an opening in the center of the upper part, and a supporting leg for supporting the sandwiching part, and the opening places the reinforcing bar on the reinforcing bar receiver of the reinforcing bar spacer block having a spacing smaller than the reinforcing bar diameter, It is configured by inserting into the holding portion, expanding the opening, fitting the reinforcing bar into the holding portion, and supporting it. Here, the placement of the reinforcing bar on the reinforcing bar receiver does not matter whether the time is long or short.

[0008]

In the present invention, a sandwiching portion that sandwiches the reinforcing bars in each direction at the intersecting portion of the orthogonal reinforcing bars, and a reinforcing bar receiver that is connected to an opening in the upper center of the sandwiching portion in one direction or in both directions, A supporting leg for supporting the holding portion, the opening is expanded by placing the reinforcing bar on the reinforcing bar receiver of the reinforcing bar spacer block having an interval smaller than the diameter of the reinforcing bar and inserting the reinforcing bar into the holding section. The opening is opened, the reinforcing bar is fitted into the holding portion and supported, and the opening is reduced after the reinforcing bar is fitted to prevent the reinforcing bar from coming off. Further, when a supporting plate is provided below the supporting leg of the spacer block for reinforcing bar of the present invention, the load is dispersed by the supporting plate, and even when the lower ground of the spacer block is soft, Prevent subduction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where a welded wire mesh is also used as an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a spacer block 1 for arranging welded wire mesh and a welded wire mesh 2 arranged on the spacer block 1 for arranging welded wire mesh. In this example, the spacer block 1 for welding wire mesh reinforcement is installed on the foamed resin heat insulating material 3. Foam resin insulation 3
The waterproof layer 4 is provided in contact with the lower surface of the. After arranging the welding wire net 2, the pressing concrete 5 is placed.

An example of the spacer block 1 for welding wire mesh reinforcement shown in FIG. 1 will be described in detail with reference to FIG. Wire netting 2
A and 2b intersect at right angles and constitute the welded wire mesh 2. The spacer block 1 for arranging welded wire mesh has wire mesh bars 2a, 2
At the intersection A of b, the wire netting 2a in each direction,
2b, a sandwiching portion 6 for sandwiching the sandwiching portion 2b, wire mesh reinforcements 8 extending outward at both entrance sides of an opening 7 formed in the upper portion of the sandwiching portion 6, and supporting legs 10 for supporting the sandwiching portion 6. . The opening 7 is expanded by inserting the wire net reinforcements 2a and 2b into the wire mesh reinforcement receivers 8 and the wire mesh reinforcements 2a and 2b are fitted into the holding portion 6. It is possible to reliably prevent the wire netting bars 2a and 2b from coming off the holding section 6. In this example, the spacer block 1 for arranging welded wire mesh is installed on the foamed resin heat insulating material 3, so that the support plate 11 having a certain area is provided below the support leg 10. Accordingly, even if a load is applied such as when a person walks, the welded wire mesh reinforcing spacer block 1 is prevented from sinking into the foamed resin heat insulating material 3, and the waterproof layer 4 is not damaged. Does not cause cracks in the holding concrete 5. If there is no fear of sinking into the base material under the support plate 11, in that respect the support plate 11
Although it can be said that it is not necessary to provide the above, even in such a case, by providing the support plate 11, it is possible to enhance the stability in installation of the reinforcing bar spacer block. The support position of the sandwiching portion 6 of the one reinforcing bar 2a and the other reinforcing bar 2 which are orthogonal to each other.
A height difference corresponding to the length of the diameter of the reinforcing bar is provided between the gripping portion 2b and the supporting position of the sandwiching portion 2b. Unlike FIG. 2, the wire mesh reinforcement 8 is not provided on one side of the sandwiching portion, and the inside of the sandwiching portion is U-shaped.
The upper part may be opened in a V shape or a V shape. Needless to say, if openings are formed in both reinforcing bars as in this example and a wire net reinforcing bar receiver is provided, it is possible to further prevent the reinforcing bars from coming off.

Next, another embodiment will be described with reference to FIG. The wire nettings 2a and 2b intersect at right angles to form a welded wire netting 2. The spacer block 1 for arranging welded wire mesh has a sandwiching portion 6 for sandwiching the wire mesh reinforcements 2a and 2b in respective directions at an intersection A of the wire mesh reinforcements 2a and 2b, and an opening 7 formed in the upper portion of the sandwiching portion 6. A wire netting receiver 8 extending outward at both ends on the insertion side and a common substrate 9 for fixing the holding portion 6
And supporting legs 10 for supporting the substrate 9. Figure 3
Is a case where the sandwiching portion 6 is not directly supported by the supporting legs 10 but is supported through the substrate 9, and other than this is almost the same as the embodiment of FIG. 2 described above.

Next, another embodiment will be described with reference to FIG. In FIG. 4, a spacer block 1 for bar arrangement
Is a holding portion 6 that holds the reinforcing bars 2a and 2b in each direction at the intersection of the orthogonal reinforcing bars 2a and 2b.
It extends inward from both sides of the upper part of the holding part 6 of b, and has an opening 7 at the tip.
Support leg 1 that supports the reinforcing bar receiver 8 and the holding portion 6
With 0 and. The opening 7 has a gap smaller than the diameter of the reinforcing bar 2b, and the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver 8 into the clamping section 6, and the reinforcing bar 2b is fitted into the clamping section 6. The support lumen of the holding portion 6 of the reinforcing bar 2b is U-shaped. A height difference corresponding to the length of the diameter of the reinforcing bar is provided between the supporting position of the one reinforcing bar 2b in the clamping section 6 and the supporting position of the other reinforcing bar 2a in the clamping section 6 which are orthogonal to each other. Rebar 2a,
In order to maintain such a supporting state of 2b, the supporting lumen of the holding portion 6 of the reinforcing bar 2a is V-shaped, and the position and height of this V-shaped supporting slope are determined. When the V-shaped inclination and dimensions are determined so that the reinforcing bar 2a is forcedly pushed into the V-shaped supporting inner cavity of the holding portion 6, the reinforcing bar 2a works to prevent the reinforcing bar 2a from coming off due to frictional resistance. The reinforcing bar spacer block 1 of this example is provided with a support plate 11 to prevent the support legs 10 from sinking.

[0013]

The spacer block for bar arrangement of the present invention comprises:
It is easy to install the rebar, it can be securely held in place, and never comes off during work such as concrete pouring. In addition, it can be applied to all reinforcing bars regardless of the presence or absence of a soft base material such as a heat insulating material, and when used as a heat insulating plate for external heat insulation, it does not sink and does not damage the waterproof layer. Absent.

[Brief description of drawings]

FIG. 1 is a diagram showing a case where a reinforcing bar spacer block of the present invention is applied to a reinforcing bar of a roof outside heat insulating and waterproofing method.

FIG. 2 is a diagram for explaining an example of a reinforcing bar spacer block of the present invention. (A) is a plan view, (b) is a side view,
(C) is a perspective view.

FIG. 3 is a view for explaining another embodiment of the reinforcing bar spacer block of the present invention. (A) is a plan view, (B) is a side view, and (C) is a perspective view.

FIG. 4 is a diagram illustrating still another embodiment of the reinforcing bar spacer block of the present invention. (A) is a perspective view,
(B) is a side view of (A) in the X direction, and (C) is a Y side of (A).
It is a side view of a direction.

FIG. 5 is a diagram illustrating a conventional bar arrangement spacer block.

FIG. 6 is a diagram illustrating another conventional spacer block for bar arrangement.

[Explanation of symbols]

 1 Spacer Block for Bar Arrangement 2 Welded Wire Mesh 2a, 2b Wire Mesh Bar 3 Foamed Resin Insulation Material 4 Waterproof Layer 5 Pressing Concrete 6 Clamping Part 7 Opening 8 Reinforcing Bar Receiving (Wire Reinforcing Bar) 9 Substrate 10 Supporting Leg 11 Supporting Plate 12 Steel Bar 13 steel rod piece 14 inverted U-shaped rod-shaped steel rod piece 15 inverted U-shaped rod-shaped steel rod piece

Claims (6)

[Claims] 1. A holding part for holding a reinforcing bar, a reinforcing bar receiver extending outward at both entrance-side ends of an opening formed in an upper center of the holding part, and a supporting leg for supporting the holding part, The opening has a spacing smaller than the diameter of the reinforcing bar, and the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver into the clamping section, and the reinforcing bar is fitted into the clamping section. Spacer block for muscles. 2. At the intersection of orthogonal reinforcing bars, a holding portion for holding reinforcing bars in each direction and an opening formed in the center of the upper portion of the holding portion of the perpendicular reinforcing bars in one direction or in both directions. A reinforcing bar receiver that extends outward at both ends of the side, and a supporting leg that supports the sandwiching part, and between a supporting position of the sandwiching part of one reinforcing bar and a supporting position of the sandwiching part of the other reinforcing bar orthogonal to each other. A height difference approximately corresponding to the length of the diameter of the reinforcing bar, the opening has a spacing smaller than the diameter of the reinforcing bar, the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver into the sandwiching part, A reinforcing bar spacer block, characterized in that a reinforcing bar is fitted into the holding portion. 3. A sandwiching part for sandwiching the reinforcing bar, a reinforcing bar receiver extending inward from both upper sides of the sandwiching part and having an opening at its tip, and a supporting leg for supporting the sandwiching part. A bar arrangement having a spacing smaller than the diameter of the reinforcing bar, wherein the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver into the clamping section, and the reinforcing bar is fitted into the clamping section. Spacer block. 4. An intersecting portion of orthogonal reinforcing bars, a clamping portion that clamps the reinforcing bars in each direction, and an inward direction extending from both upper sides of the one-way or bidirectional clamping portion of the orthogonal reinforcing bars, A reinforcing bar receiver having an opening formed at its tip and a supporting leg for supporting the sandwiching portion are provided, and substantially between the supporting position of the sandwiching portion of one reinforcing bar and the supporting position of the sandwiching portion of the other reinforcing bar which are orthogonal to each other. Providing a height difference corresponding to the length of the diameter of the rebar,
The opening has an interval smaller than the diameter of the reinforcing bar, and the opening is expanded by inserting the reinforcing bar placed on the reinforcing bar receiver into the clamping section, and the reinforcing bar is fitted into the clamping section. Spacer block for bar arrangement. 5. The reinforcing bar spacer block according to claim 1, 2, 3 or 4, wherein the lower part of the supporting leg has a supporting plate. 6. A holding portion for holding reinforcing bars in each direction at an intersecting portion of orthogonal reinforcing bars, a reinforcing bar receiver connected to an opening at an upper center of the holding section in one direction or two directions of the holding section, and the holding means. And a supporting leg for supporting the portion, and the opening is expanded by placing the reinforcing bar on the reinforcing bar receiver of the reinforcing bar spacer block having an interval smaller than the diameter of the reinforcing bar and inserting the reinforcing bar into the holding section. , Reinforcing the rebar into the holding part,
A reinforcement method using a spacer block for reinforcement, which is characterized by supporting.