JP2024020043A - Reinforcement frame and bar arrangement method using reinforcement frame - Google Patents

Abstract

To make it possible to provide a reinforcement frame that can hold bar arrangement positions of reinforcements during reinforcement assembly work and a bar arrangement method using the reinforcement frame.SOLUTION: The reinforcement frame 300 of the present invention is mounted at a vertical reinforcement unit having a plurality of inner vertical reinforcements 211 arranged with a prescribed interval and erected in a vertical direction and a plurality of outer vertical reinforcements 212 arranged with a prescribed interval and outside of the inner vertical reinforcements 211 and erected in a vertical direction, and comprises an inner horizontal member 310 extending along a horizontal direction and holding the intervals of the inner vertical reinforcements 211, an outer horizontal member 320 extending along a horizontal direction and holding the intervals of the outer vertical reinforcements, in and out joint members 330 connected to the inner horizontal member 310 and the outer horizontal member 320 and holding an interval between the inner vertical reinforcement 211 and the outer vertical reinforcement 212, and diagonal members mounted to the outer vertical reinforcements 212 and inclining and extending in the direction along the surface with the outer vertical reinforcements 212 disposed thereon and relative to a vertical direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a reinforcing bar frame and a reinforcing bar arrangement method using the reinforcing bar frame.

For example, a reinforced concrete building is constructed by placing reinforcing bars inside the concrete. The reinforcing bars are composed of main bars (vertical bars) that extend in the vertical direction (vertical direction) and tie bars (horizontal bars) that extend in the horizontal direction orthogonal to the main bars. However, the number of reinforcing bars used in reinforced concrete bridge piers is large, and the work requires a considerable amount of man-hours and days. In particular, for tall columns such as bridge piers, there is a limit to the amount of concrete that can be placed at one time, so pouring is required. As a result, reinforcing work at high places becomes even more labor-intensive.

Therefore, it has been conventionally proposed to use a reinforcing bar unit that is a combination of main bars and tie bars (for example, see Patent Document 1). Patent Document 1 discloses that column reinforcements (main reinforcements) to be incorporated into one or a plurality of consecutive columns and beam reinforcements (tie reinforcements) to be connected to the main reinforcements are formed into a reinforcement unit in advance with each plane as a unit, and reinforced concrete is formed. A reinforcement arrangement method has been proposed in which a reinforcing bar unit is suspended by a crane and the reinforcing bars are placed on a reinforcing bar frame at the same time as or after reinforcing the floor of a structural building.

By the way, the reinforcement arrangement method of Patent Document 1 is performed in a cycle process in which a reinforcing bar unit is formed, the reinforcing bar unit is transferred to a construction position using a crane, and the reinforcing bars are arranged on a reinforcing bar frame. With this bar arrangement method, waiting time occurs between the work in the previous process and the next work, resulting in wasted time. In the cycle process described above, after forming a reinforcing bar unit, the worker who assembled the reinforcing bar unit had to wait until forming the next reinforcing bar unit.

On the other hand, Patent Document 2 describes a temporary assembly process in which a reinforcing bar unit made of hoops is temporarily assembled on a temporary assembly jig on the ground near a construction site to form a reinforcing bar unit, and a temporary assembly process in which the temporarily assembled reinforcing bar unit is moved to a position where it will be erected. A construction method is described which includes a step of suspending and transferring the reinforcing bar unit to the vertical reinforcement installed at the erection position, and a step of joining the suspended and transferred reinforcing bar unit to the vertical reinforcement that has been erected at the erection position. Patent Document 2 describes that a series of operations of temporary assembly, remounting, lifting and transferring, and connection with vertical reinforcements in each step of reinforcing bar temporary assembly construction are repeated and successive.

Japanese Patent Application Publication No. 2012-036584 Patent No. 4150981

However, when assembling pier reinforcing bars, in the construction method of Patent Document 2, when suspending a temporarily assembled reinforcing bar unit, braces such as a single pipe are installed on the main reinforcing bars to maintain the position of the main reinforcing bars (vertical bars). had to be temporarily removed, and there was a risk that the main reinforcing bars would fall or twist, compared to the planned position of the main reinforcing bars at the time of design. In particular, when assembling reinforcing bars on high piers, it is difficult to absorb the reaction force from the surroundings, so after connecting the reinforcing bar unit consisting of stirrups to the main reinforcing bars, the main reinforcing bars must be adjusted to the planar position planned at the time of design. It was difficult to do so.

The present invention has been made in consideration of such circumstances, and provides a reinforcing bar frame and a reinforcing bar arrangement method using the reinforcing bar frame that can maintain the reinforcing bar arrangement position during reinforcing bar assembly work. The purpose is to

In order to solve the above problems, the present invention proposes the following means.
The reinforcing bar frame according to the present invention includes a plurality of inner longitudinal reinforcements arranged at predetermined intervals and erected in the vertical direction, and a plurality of outer longitudinal reinforcements arranged at predetermined intervals outside the inner longitudinal reinforcements and erected in the vertical direction. A reinforcing bar frame attached to a vertical reinforcement unit having vertical reinforcements, the inner horizontal member extending along a horizontal direction orthogonal to the vertical direction and maintaining the interval between the plurality of inner vertical reinforcements, and a horizontal an outer horizontal member that extends along the plurality of outer longitudinal reinforcements and maintains the interval between the plurality of outer longitudinal reinforcements, and is connected to the inner horizontal member and the outer horizontal member and maintains the interval between the inner longitudinal reinforcement and the outer longitudinal reinforcement. an inner and outer joint member to be held; and a diagonal member attached to the outer longitudinal reinforcement and extending in a direction along the plane on which the plurality of outer longitudinal reinforcements are arranged and in an inclined direction inclined with respect to the vertical direction; , is provided.

In the present invention, by attaching the reinforcing bar frame to the vertical bar unit, the vertical bar unit can be held at the position planned at the time of design without the reinforcing bars falling down or shifting. Further, since the reinforcing bar frame can maintain the planned position of the vertical bar unit, the accuracy of reinforcing bar assembly in the reinforcing bar arrangement work is improved, and the cover dimension can be ensured.

Further, in the reinforcing bar frame according to the present invention, the outer horizontal member includes a first outer horizontal member that extends at least along the horizontal direction and maintains an interval between the plurality of outer vertical reinforcements, and a first outer horizontal member that extends at least along the horizontal direction. a second outer horizontal member that is provided vertically lower than the second outer horizontal member, extends along the horizontal direction, and maintains intervals between the plurality of outer vertical bars, and the diagonal member has a second outer horizontal member that is provided in the vertical direction. The upper and lower connecting diagonal members may be provided, which extend from one side to the other and have at least one end connected to the first outer horizontal member and the other end connected to the second outer horizontal member.

In this case, the reinforcing bar frame can further improve the holding power of the longitudinal bar unit in the planned position.

Further, the reinforcing bar frame according to the present invention may include a plurality of the above-mentioned upper and lower connecting diagonal members, and at least two may intersect with each other.

In this case, the reinforcing bar frame can further maintain the parallelism and verticality of the planned position of the longitudinal bar unit.

Further, in the reinforcing bar frame according to the present invention, the inner horizontal member has an inner notch portion cut out in accordance with the interval between the plurality of inner vertical reinforcements, and the outer horizontal member has an inner notch portion cut out according to the interval between the plurality of outer vertical reinforcements. It may have outer notches cut out to match the spacing between the striations.

In this case, by providing each of the inner horizontal member and the outer horizontal member with a notch, the interval between the inner longitudinal reinforcement and the outer longitudinal reinforcement of the longitudinal reinforcement unit can be maintained accurately when attached to the longitudinal reinforcement unit. I can do it.

Further, in the reinforcing bar frame according to the present invention, the inner horizontal member, the outer horizontal member, the inner and outer joint members, and the diagonal member are vertical reinforcements between the inner longitudinal reinforcement and the outer longitudinal reinforcement. It may be arranged in space.

In this case, when the horizontal reinforcing bar units are arranged so as to be inserted into the vertical reinforcing units from above to below, the reinforcing bars can be arranged without interfering with the reinforcing bar frame.

Further, the reinforcement arrangement method using the reinforcing bar frame according to the present invention includes a plurality of inner longitudinal reinforcements arranged at predetermined intervals and erected vertically, and a plurality of inner longitudinal reinforcements arranged at predetermined intervals outside the inner longitudinal reinforcements and vertically erected. A reinforcement arrangement method using a reinforcing bar frame attached to a vertical reinforcement unit having a plurality of outer vertical reinforcements erected in the direction, the reinforcing bars extending along a horizontal direction orthogonal to the vertical direction, an inner horizontal member that maintains the spacing between the vertical bars, an outer horizontal member that extends along the horizontal direction and maintains the spacing between the plurality of outer vertical bars, and is connected to the inner horizontal member and the outer horizontal member. , an inner and outer joint material that maintains the interval between the inner longitudinal reinforcement and the outer longitudinal reinforcement, and a direction along the plane on which the plurality of outer longitudinal reinforcements are arranged and which is attached to the outer longitudinal reinforcement, and in a vertical direction. a diagonal member extending in an inclined direction that is inclined with respect to , a positioning step of aligning the vertical reinforcement unit using the reinforcing bar frame, and arranging a horizontal reinforcement unit arranged in a space excluding the vertical reinforcement space and extending in the horizontal direction to the vertical reinforcement unit. The method includes a step of arranging reinforcement, and a removal step of removing the reinforcing bar frame from the vertical reinforcement unit.

In this case, the reinforcing bar frame can hold the vertical bar unit in the position planned at the time of design, and furthermore, when the horizontal bar unit is arranged so that it is inserted into the vertical bar unit from above to below. , work can be done efficiently by arranging reinforcement without interfering with the reinforcing bar frame.

According to the reinforcing bar frame and the reinforcing bar arrangement method using the reinforcing bar frame according to the present invention, there is provided a reinforcing bar frame and a reinforcing bar arrangement method using the reinforcing bar frame that can maintain the reinforcing bar arrangement position during reinforcing bar assembly work. can do.

FIG. 2 is an overall view illustrating a reinforcing bar complex constructed above a reinforcing bar foundation by reinforcing work using a reinforcing bar frame according to an embodiment of the present invention. FIG. 2 is a view from above of the longitudinal reinforcement unit of the reinforcing bar complex taken along the AA cross section in FIG. 1. FIG. 3 is a plan view showing a horizontal reinforcing bar unit of the reinforcing bar complex suspended by a crane. FIG. 3 is a plan view of the reinforcing bar frame seen from above. It is a side view of the reinforcing bar frame seen from the back side (or inside). It is a perspective view of the reinforcing bar frame seen from the back side (or inside). It is a diagram showing a state in which the outer horizontal member of the reinforcing bar frame is attached to the vertical bar unit of the same reinforcing bar complex, and the reinforcing bar at the center of the vertical bar unit is adjusted to the planned position. It is a diagram showing a state in which all of the reinforcing bar frames are attached to the vertical bar unit of the reinforcing bar complex and the entire longitudinal bar unit is adjusted to the planned position. It is a figure which shows the state in which the longitudinal reinforcement unit of the same reinforcing steel complex was adjusted to the planned position. It is a diagram showing a state in which the braces attached to the vertical reinforcement units of the reinforcing bar composite are removed. It is a diagram showing a state in which horizontal reinforcing bar units are arranged on vertical reinforcing bar units constructed above the same reinforcing bar foundation. It is a diagram showing a state in which horizontal reinforcing bar units are arranged on vertical reinforcing bar units constructed above the same reinforcing bar foundation. It is a figure which shows the state where the same reinforcing bar frame was removed from the vertical reinforcement unit of a reinforcing bar complex.

One embodiment of the present invention will be described with reference to FIGS. 1 to 13. The dimensions, materials, and other specific numerical values shown in the embodiments of the present invention are merely illustrative to facilitate understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and the drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to omit redundant explanation, and elements not directly related to the present invention are omitted from illustration. do.

In the present embodiment, the vertical direction is the Z direction, the ground G side is the lower side (lower side) Z2, and the upper side opposite to the ground G side is the upper side (upper side) Z1. Further, the horizontal direction perpendicular to the Z direction is the X direction, one side is the left side X1, and the other side is the right side X2. Further, the horizontal direction perpendicular to the Z direction and the X direction is the Y direction, the front side is the front side Y1, and the back side is the back side Y2. Further, the plane defined by the X direction and the Y direction is defined as a horizontal plane.

FIG. 1 is an overall view illustrating a reinforcing bar complex 200 constructed above Z1 of a reinforcing bar base 100 by a reinforcing operation using a reinforcing bar mount 300 (see FIG. 4) according to an embodiment of the present invention. Here, the reinforcing bar base 100 and the reinforcing bar composite 200 in FIG. 1 are illustrated in cross-sectional states as viewed from the front side Y1 in the Y direction. The reinforcing bar frame 300 maintains the position of the reinforcing bar complex 200 planned at the time of design without the reinforcing bars falling or shifting during reinforcement work for the reinforcing bar complex 200 constructed above Z1 of the reinforcing bar foundation 100. do.

First, the reinforcing bar foundation 100 will be explained.
As shown in FIG. 1, the reinforcing bar foundation 100 is a foundation concrete that fixes and supports the vertical bar unit 210. The reinforcing steel foundation 100 is constructed as a foundation for a structure such as a smoke tower, a steel tower, a high-rise building, a bridge, or a power transmission line tower, for example. The reinforcing bar base 100 may be a previously constructed concrete column or the like.

The shape of the reinforcing bar foundation 100 is set appropriately according to the shape of the structure to be constructed. The reinforcing bar base 100 is formed into a substantially bottomed cylindrical shape with a substantially rectangular upper surface 100a located above Z1 and having a pair of opposing sides across the center O1 of the reinforcing bar base 100 in each of the X direction and the Y direction. There is. As shown in FIG. 2, the reinforcing bar base 100 is formed by hollowing out a substantially square central portion where a vertical reinforcing bar unit 210, which will be described later, is not erected. Note that the shape of the reinforcing bar base 100 is not particularly limited, and may be, for example, a quadrangular prism, a cylinder, a polygon, or a column.

A reinforcing bar composite 200, which will be described later, is provided on the upper surface 100a of the reinforcing bar foundation 100. The reinforcing bar foundation 100 may further include columns, beams, braces, ladders for workers to climb up and down, and the like. Furthermore, a work scaffold 101 is constructed around the reinforcing bar base 100 to a predetermined height.

Next, the reinforcing bar composite 200 constructed on the reinforcing bar foundation 100 will be explained.

FIG. 2 is a diagram of the reinforcing bar composite 200 taken along the AA cross section in FIG. 1, viewed from above Z1. FIG. 3 is a diagram showing the horizontal reinforcing bar unit 220 of the reinforcing bar complex 200 suspended by a crane C. The reinforcing bar composite 200 is provided to strengthen the bending rigidity and shear rigidity of the structure. The reinforcing bar complex 200 includes a vertical reinforcing bar unit 210 and a horizontal reinforcing bar unit 220. Note that the two-dot chain line shown in FIG. 2 indicates the horizontal reinforcing bar unit 220. Further, although FIG. 2 shows the reinforcing bar frame 300 connected to the vertical bar unit 210, a detailed explanation will be given later.

As shown in FIG. 1, the vertical reinforcement unit 210 is a plurality of reinforcing bars that stand up from the reinforcing bar base 100 in the Z direction. The longitudinal strip unit 210 includes an inner longitudinal strip 211 and an outer longitudinal strip 212.

The inner longitudinal reinforcement 211 is erected from the reinforcing bar foundation 100 toward the upper direction Z1 in the Z direction (vertical direction). As shown in FIG. 2, a plurality of inner longitudinal reinforcements 211 are arranged in a substantially rectangular shape at predetermined intervals along the shape of the upper surface 100a of the reinforcing bar base 100, and are perpendicular to the horizontal plane, and relative to each other in the X direction. A total of four inner vertical striped side surfaces are formed, including two surfaces facing each other in the Y direction and two surfaces facing each other in the Y direction. The plurality of inner vertical reinforcements 211 are arranged so that their centers overlap with the center O1 of the reinforcing bar base 100 when viewed from above Z1.

Here, as shown in FIG. 2, the direction facing the center O1 of the reinforcing bar base 100 with respect to the reinforcing bar complex 200 is defined as the inner side P1, and the direction opposite to the inner P1 with respect to the reinforcing bar complex 200 is the direction of the reinforcing bar base 100. The direction away from the center O1 is defined as the outer side P2.

The outer longitudinal reinforcement 212, like the inner longitudinal reinforcement 211, is erected from the reinforcing bar foundation 100 toward the upper Z1 in the Z direction (vertical direction). A plurality of outer vertical bars 212 are arranged in a substantially rectangular shape at predetermined intervals along the shape of the upper surface 100a of the reinforcing bar base 100, and are perpendicular to a horizontal plane, and have two opposing faces in the X direction and two faces in the Y direction. A total of four outer longitudinal strip sides are formed with two opposing sides. Moreover, the outer longitudinal stripe 212 is formed on the outer side P2 than the inner longitudinal stripe 211. Like the inner longitudinal reinforcement 211, the outer longitudinal reinforcement 212 is arranged so that its center overlaps the center O1 of the reinforcing bar base 100 when viewed from above Z1.

Although the outer diameter and length of the inner longitudinal reinforcement 211 and the outer longitudinal reinforcement 212 are not particularly limited, in this embodiment, both have substantially the same outer diameter and length. Note that the reinforcing bar base 100 may be provided with an insert bar (not shown) or the like so as to protrude upward Z1. In this case, the positions of the inner longitudinal reinforcement 211 and the outer longitudinal reinforcement 212 can be adjusted by binding the lower ends of each to the insert reinforcement. Thereafter, the inner longitudinal reinforcements 211 and the outer longitudinal reinforcements 212 are arranged at predetermined intervals and fixed to the upper surface 100a of the reinforcing bar base 100.

Further, in this embodiment, a predetermined space is formed between the inner longitudinal reinforcement 211 and the outer longitudinal reinforcement 212. The space between the inner longitudinal reinforcement 211 and the outer longitudinal reinforcement 212 is defined as a longitudinal reinforcement space A1.

Next, the horizontal reinforcing bar unit 220 of the reinforcing bar complex 200 will be explained.

As shown in FIG. 1, the horizontal reinforcing bar unit 220 is suspended by a crane C, and is arranged so as to be inserted into the vertical reinforcing bar unit 210 from an upper direction Z1 to a lower direction Z2. As shown in FIG. 3, the horizontal reinforcing bar unit 220 is a composite of reinforcing bars formed by stacking a plurality of reinforcing bars. In this embodiment, the plurality of reinforcing bars are provided with semicircular hooks designed to have a predetermined length and angle by bending both ends to improve fixation (fixation) properties. Note that the reinforcing bars do not need to be provided with semicircular hooks. Further, the reinforcing bars may have both ends bent to form right-angled hooks or acute-angled hooks.

The horizontal reinforcing bar unit 220 has an internal reinforcing bar 221 formed in a substantially rectangular shape along the shape of the upper surface 100a of the reinforcing bar base 100 at an inner side P1 of the inner longitudinal reinforcing bar 211, and an inner band reinforcing bar 221 formed in a substantially rectangular shape along the shape of the upper surface 100a of the reinforcing bar base 100, and an outer side P2 of the inner band reinforcing bar 221. Furthermore, an outer band reinforcement 222 is provided which is formed in a substantially rectangular shape along the shape of the upper surface 100a of the reinforcing bar base 100 on the outer side P2 of the outer longitudinal reinforcement 212. The internal band muscles 221 and the external band muscles 222 extend in the X direction (horizontal direction) and Y direction, which form a horizontal plane. Here, a predetermined space is formed between the inner band muscle 221 and the outer band muscle 222. The space between the internal reinforcing bars 221 and the external reinforcing bars 222 is defined as a horizontal reinforcing bar space A2.

The internal band muscle 221 is arranged on the inner side P1 of the inner longitudinal muscle 211. The external band muscle 222 is arranged on the outer side P2 of the outer longitudinal muscle 212. Therefore, the horizontal reinforcement space A2 is larger than the vertical reinforcement space A1. The horizontal reinforcement unit 220 can be arranged without interfering with the vertical reinforcement unit 210 when the reinforcement is arranged so as to be inserted into the vertical reinforcement unit 210 from the upper Z1 to the lower Z2.

In the reinforcement work, first, a bar-shaped brace (single pipe) 400 (see FIG. 7) connected to the vertical reinforcement unit 210 provided on the upper surface 100a of the reinforcing bar base 100 and the work scaffold 101 is placed in the vertical reinforcement unit. 210 is fixed at the planned position set at the time of planning. Thereafter, the above-described horizontal reinforcing bar unit 220 is formed on the ground G near the reinforcement work site. The horizontal reinforcing bar unit 220 is formed by a conventionally known construction method and is suspended by a crane C. Next, the reinforcing bar frame 300 is attached to the vertical bar unit 210, and the brace 400 is removed from the longitudinal bar unit 210 and the work scaffold 101. Thereafter, the horizontal reinforcing bar units 220, which were simultaneously transferred in five stages by the crane C, are joined to the vertical reinforcing bar units 210 to construct the reinforcing bar complex 200. The vertical reinforcement unit 210 and the horizontal reinforcement unit 220 are bound and joined. After the reinforcement work is performed, a formwork is formed around the reinforcing bar composite 200, and concrete is poured.

Next, the reinforcing bar frame (reinforcing bar holder) 300 used for reinforcement work will be explained.

FIG. 4 is a plan view of the reinforcing bar frame 300 viewed from above Z1. FIG. 5 is a side view of the reinforcing bar frame 300 viewed from the back side Y2 (or inside P1). FIG. 6 is a perspective view of the reinforcing bar frame 300 viewed from the back side Y2 (or inside P1). The reinforcing bar frame 300 is attached to the vertical bar unit 210. The reinforcing bar frame 300 is a member that holds the planned position of the reinforcing bar complex 200 during reinforcement work. The reinforcing bar frame 300 includes an inner horizontal member 310, an outer horizontal member 320, an inner and outer joint member 330, and a diagonal member 340. Note that the vertical reinforcement unit 210 of the reinforcing bar composite 200 shown in FIG. 4 is shown in a cross-sectional state. Further, in FIG. 5, the inner horizontal member 310 of the reinforcing bar frame 300 is not shown.

Hereinafter, in the description of the reinforcing bar mount 300, only the reinforcing bar mount 300 attached to the longitudinal bar unit 210 of the reinforcing bar complex 200 provided on the front side Y1 of the reinforcing bar base 100 in the Y direction will be explained, and the reinforcing bar mount 300 will be explained on the back side in the Y direction The reinforcing bar frames 300 provided on both sides in the Y2 and X directions have the same configuration, and illustration and description thereof will be omitted. Further, the reinforcing bar frame 300 may be attached to the longitudinal bar unit 210 of the reinforcing bar complex 200 in all directions of the X direction and the Y direction, or may be attached only in any one direction.

As shown in FIGS. 4 and 6, the inner horizontal member 310 extends along the X direction (horizontal direction). The inner horizontal member 310 is attached to a plurality of inner vertical bars 211 arranged in the X direction. Specifically, the inner horizontal member 310 is formed on a plane formed by a first inner plate member 310a that is formed on a horizontal plane and extends along the X direction, and the Z direction and the X direction, and extends in the X direction. It is an angle steel such as an L-shaped angle connected to the second inner plate member 310b extending along the second inner plate member 310b. The second inner plate member 310b is connected to one end of the outer side P2 of the first inner plate member 310a, and is formed below Z2. The inner horizontal member 310 has an inner notch portion 311 cut out from the inner side P1 in accordance with the interval between the inner vertical stripes 211 in the first inner plate member 310a. The inner horizontal member 310 is attached from the outside P2 so that the inner longitudinal reinforcements 211 are fitted into the inner notch portion 311, thereby maintaining the intervals between the plurality of inner longitudinal reinforcements 211. Furthermore, a U-shaped metal fitting 312 is attached to the second inner plate member 310b from the inner side P1 with bolts or the like via the inner vertical reinforcement 211. The inner vertical reinforcement 211 is fixed to the inner horizontal member 310 by a U-shaped metal fitting 312. The number of inner horizontal members 310 is not particularly limited as long as it is provided at least one or more.

The outer horizontal member 320 extends along the X direction (horizontal direction) and is attached to a plurality of outer longitudinal stripes 212 arranged on the outer side P2 than the inner longitudinal strips 211. Specifically, the outer horizontal member 320 is formed on a surface formed by a first outer plate member 320a that is formed on a horizontal plane and extends along the X direction, and the Z direction and the X direction, and extends in the X direction. It is an angle steel such as an L-shaped angle connected to the second outer plate member 320b extending along the second outer plate member 320b. The second outer plate member 320b is connected to one end of the inner side P1 of the first outer plate member 320a, and is formed below Z2. The outer horizontal member 320 has an outer notch portion 321 cut out from the outer side P2 in accordance with the interval between the outer longitudinal stripes 212 in the first outer plate member 320a. The outer horizontal member 320 is attached from the inner side P1 so that the outer longitudinal reinforcements 212 are fitted into the outer notch portion 321, thereby maintaining the intervals between the plurality of outer longitudinal reinforcements 212. Further, a U-shaped metal fitting 322 is attached to the second outer plate member 320b from the outer side P2 with bolts or the like via the outer vertical reinforcement 212. The outer vertical reinforcement 212 is fixed to the outer horizontal member 320 by a U-shaped metal fitting 322.

Note that the lengths of the inner horizontal member 310 and the outer horizontal member 320 are preferably designed in accordance with the structure of the reinforcing bar composite 200. For example, the inner horizontal member 310 is designed to have a length that does not interfere with the semicircular hooks provided on both sides of the inner reinforcing bar 221 of the horizontal reinforcing bar unit 220, and the outer horizontal member 320 is designed to have a length that does not interfere with the semicircular hooks provided on both sides of the inner reinforcing bar 221 of the horizontal reinforcing bar unit 220. The length is designed so as not to interfere with the semicircular hooks provided on both sides of the muscle 222. In this embodiment, the length of the outer horizontal member 320 in the X direction is longer than the length of the inner horizontal member 310. However, the lengths of the inner horizontal member 310 and the outer horizontal member 320 are not particularly limited.

As shown in FIG. 5, in this embodiment, the outer horizontal member 320 is a first outer horizontal member 320c that extends along the X direction and is attached at approximately the same height as the inner horizontal member 310 in the Z direction. , a second outer horizontal member 320d extending along the X direction and provided below (lower side) Z2 than the first outer horizontal member 320c. The first outer horizontal member 320c and the second outer horizontal member 320d are arranged at a predetermined interval in the Z direction. Further, the first outer horizontal member 320c and the second outer horizontal member 320d both have an outer notch portion 321 cut out in accordance with the interval between the outer vertical stripes 212. Note that at least one outer horizontal member 320 may be provided, and the number is not particularly limited. Further, the inner horizontal member 310 may be attached to the inner vertical strip 211 at substantially the same height as the second outer horizontal member 320d.

As shown in FIGS. 4 to 6, the inner and outer joint members 330 are formed on a plane formed by a first inner and outer board member 330a that is formed on a horizontal plane and extends along the Y direction, and the Z direction and the Y direction. The second inner and outer plate members 330b extending along the Y direction are connected to each other by an angle steel such as an L-shaped angle. The second inner and outer plate member 330b is connected to one end of the first inner and outer plate member 330a in the X direction, and is formed above Z1. The inner and outer joint members 330 are connected to the inner horizontal members 310 and the outer horizontal members 320 at both ends of the first inner and outer board members 330a in the Y direction, and maintain the distance between the inner longitudinal reinforcements 211 and the outer longitudinal reinforcements 212. Further, the second inner and outer plate members 330b of the inner and outer joint members 330 may be arranged so as to come into contact with the inner longitudinal reinforcements 211 and the outer longitudinal reinforcements 212 when connected to the inner horizontal members 310 and the outer horizontal members 320. good. With this configuration, the inclination of the inner and outer joint members 330 with respect to the inner horizontal members 310 and the outer horizontal members 320 can be confirmed, and the positions of the inner longitudinal reinforcements 211 and the outer longitudinal reinforcements 212 may be tilted or misaligned with respect to the planned positions. You can check whether it has been done or not. In addition, in this embodiment, as shown in FIG. 5, the inner and outer joint members 330 are attached at approximately the same height as the first outer horizontal member 320c in the Z direction, and are provided at a predetermined interval in the X direction. The second outer horizontal member 320d has two rods attached at substantially the same height as the second outer horizontal member 320d in the Z direction, and two rods provided at a predetermined interval in the X direction. However, the number of inner and outer joint members 330 is not particularly limited, and may be provided with only one, or three or more.

As shown in FIG. 5, the diagonal member 340 is attached to the inner side P1 of the outer longitudinal reinforcement 212 using, for example, a U-shaped metal fitting 342 or the like. Further, the diagonal member 340 is connected at both ends to the outer horizontal member 320 by bolts or the like. In this embodiment, the diagonal member 340 is made of, for example, an angle steel such as an L-shaped angle so that it can be easily fixed with bolts. However, the shape and material of the diagonal member 340 are not particularly limited, and for example, steel bars such as round bars, square bars, hexagonal bars, octagonal bars, flat steel bars, and deformed steel bars may be used.

The diagonal member 340 includes an upper and lower connecting diagonal member 341 whose one end is connected to the first outer horizontal member 320c and the other end is connected to the second outer horizontal member 320d. The vertical connecting diagonal member 341 includes a first vertical connecting diagonal member 341a and a second vertical connecting diagonal member 341b. Further, the diagonal member 340 includes a third diagonal member 340c whose one end is connected to the second outer horizontal member 320d. Although a plurality of diagonal members 340 are provided in this embodiment, the number is not particularly limited, and it is sufficient that at least one diagonal member 340 is provided.

The first vertical connection diagonal member 341a is a diagonal member 341a that is inclined with respect to the Z direction (vertical direction) in a direction along the side surface of the outer longitudinal strip formed by the plurality of outer longitudinal strips 212 arranged on the front side Y1 in the Y direction. It extends in the first inclination direction K1. The first vertical connection diagonal member 341a has at least one end connected to the first outer horizontal member 320c, and the other end connected to the second outer horizontal member 320d.

The second vertical connection diagonal member 341b extends in a direction along the side surface of the outer longitudinal reinforcement and in a second inclination direction K2 inclined with respect to the Z direction (vertical direction) and the first inclination direction K1. There is. The second vertical connecting diagonal member 341b has at least one end connected to the first outer horizontal member 320c, and the other end connected to the second outer horizontal member 320d. The two vertical connecting diagonal members, the first vertical connecting diagonal member 341a and the second vertical connecting diagonal member 341b, intersect.

The reinforcing bar frame 300 includes an inner horizontal member 310, an outer horizontal member 320, an inner and outer joint member 330, and a diagonal member 340. As shown in FIGS. 4 to 6, the reinforcing bar frame 300 has joints fixed with bolts or the like, and is arranged in a vertical reinforcing bar space A1 that is smaller than a horizontal reinforcing bar space A2.

(effect)
Next, the operation of the reinforcing bar frame 300 according to this embodiment will be explained with reference to FIGS. 7 to 13.

FIG. 7 is a diagram showing a state in which the outer horizontal member 320 of the reinforcing bar frame 300 is attached to the longitudinal bar unit 210 of the reinforcing bar composite 200 and adjusted to the planned position. FIG. 8 is a diagram showing a state in which all of the reinforcing bar frames 300 are attached to the longitudinal bar unit 210 of the reinforcing bar complex 200, and the entire longitudinal bar unit 210 is adjusted to the planned position. FIG. 9 is a diagram showing a state in which the longitudinal reinforcement unit 210 of the reinforcing bar composite 200 is adjusted to the planned position. FIG. 10 is a diagram showing a state in which the brace 400 attached to the vertical reinforcement unit 210 of the reinforcing bar composite 200 has been removed. Further, FIGS. 11 and 12 are diagrams showing a state in which a horizontal reinforcing bar unit 220 is arranged in a vertical reinforcing bar unit 210 constructed above Z1 of the reinforcing bar foundation 100. Further, FIG. 13 is a diagram showing a state in which the reinforcing bar frame 300 is removed from the longitudinal bar unit 210 of the reinforcing bar composite 200. In addition, in the following operations of the reinforcing bar frame 300, for convenience of explanation, only the reinforcement method (step) using the reinforcing bar frame 300 on the front side Y1 of the reinforcing bar base 100 in the Y direction will be explained, and the reinforcement method (step) using the reinforcing bar frame 300 on the rear side Y2 in the Y direction will be explained. As for both sides in the X direction, illustration and explanation will be omitted since they have the same configuration.

(Installation step)
First, in the installation step, the vertical reinforcement unit 210 of the reinforcing bar composite 200 is constructed on the reinforcing bar base 100. A working scaffold 101 is constructed around the reinforcing bar foundation 100 to a predetermined height. In order to fix the vertical reinforcement unit 210, a plurality of rod-shaped braces (single pipes) 400 connected to the vertical reinforcement unit 210 and the work scaffold 101 are provided. As shown in FIG. 7, in this state, the vertical reinforcement unit 210 placed on the front side Y1 of the reinforcing bar base 100 is slightly on the right side X2 in the X direction from the center position O2 of each reinforcing bar when viewed from the front side Y1. It's out of place.

Next, the outer horizontal member 320 of the reinforcing bar frame 300 is attached to the center of the outer vertical reinforcement 212 of the vertical reinforcement unit 210. A chain or the like (not shown) is attached to each reinforcing bar of the vertical bar unit 210. A worker (not shown) pulls this chain to the left side X1 in the X direction using a chain block to which one end is fixed, thereby shifting the position of each reinforcing bar placed in the center where the outer horizontal member 320 is attached. Correct. The center position O2 of each reinforcing bar is arranged to match the originally planned planned position O3 of each reinforcing bar.

Next, as shown in FIG. 8, all members of the reinforcing bar frame 300 are attached to the vertical bar unit 210. Specifically, an inner horizontal member 310 that extends along the X direction and maintains the intervals between the plurality of inner vertical bars 211 is attached. Furthermore, an outer horizontal member 320 is attached that extends along the X direction and maintains the intervals between the plurality of outer vertical bars 212. In addition, an inner and outer joint member 330 is attached that is connected to the inner horizontal member 310 and the outer horizontal member 320 and maintains the distance between the inner longitudinal reinforcement 211 and the outer longitudinal reinforcement 212. Further, the diagonal member 340 including the first vertically connecting diagonal member 341a, the second vertically connecting diagonal member 341b, and the third diagonal member 340c is connected to the plurality of outer vertical bars 212 disposed on the front side Y1 in the Y direction. It is attached to the outer longitudinal reinforcement 212 in the direction along the side surface of the outer longitudinal reinforcement formed by the outer longitudinal reinforcement. The reinforcing bar frame 300 attached to the vertical bar unit 210 in this manner is arranged in the vertical bar space A1.

(alignment step)
Next, as shown in FIGS. 8 and 9, in the positioning step, the worker uses the reinforcing bar frame 300 to move the part to which the outer horizontal member 320 whose position has been corrected is attached using a chain block. Correct all rebar misalignment according to the rebar. In this way, the operator uses the reinforcing bar frame 300 to align the vertical bar unit 210.

(Suppress material removal step)
Next, as shown in FIG. 10, in the step of removing the brace, the worker removes the brace 400 that connected the vertical reinforcement unit 210 and the work scaffold 101. In this state, the reinforcing bar frame 300 maintains the planned position of the longitudinal bar unit 210 while being connected to the longitudinal bar unit 210.

(Reinforcement step)
As shown in FIG. 11, in the reinforcement step, the horizontal reinforcement unit 220 is suspended by a crane C, and is reinforced so as to be inserted into the vertical reinforcement unit 210 from the upper Z1 to the lower Z2. At this time, the horizontal reinforcement space A2 between the internal reinforcement 221 and the external reinforcement 222 of the horizontal reinforcement unit 220 is larger than the vertical reinforcement space A1. That is, the horizontal reinforcement unit 220 is arranged in a space that does not interfere with the vertical reinforcement unit 210, excluding the vertical reinforcement space A1. In this way, as shown in FIG. 12, a reinforcing bar complex 200 is constructed by the horizontal reinforcing bar unit 220 transported by the crane C and the vertical reinforcing bar unit 210 arranged on the reinforcing bar foundation 100.

(Removal step)
Thereafter, as shown in FIG. 13, in a removal step, a plurality of braces 400 are again provided on the reinforcing bar composite 200. Then, the reinforcing bar frame 300 is removed from the reinforcing bar composite 200. Reinforcement arrangement work is performed through the above steps.

In this embodiment, by providing the reinforcing bar mount 300 on the longitudinal bar unit 210 of the reinforcing bar complex 200, the reinforcing bar mount 300 can maintain the reinforcing bar complex 200 as planned at the time of design without the reinforcing bars falling or shifting. Can hold position. Further, since the reinforcing bar frame 300 can always maintain the planned position of the reinforcing bar complex 200, the accuracy of reinforcing bar assembly during reinforcing work is improved, and the cover size can be ensured.

Moreover, in this embodiment, the outer horizontal member 320 includes a first outer horizontal member 320c and a second outer horizontal member 320d provided below (lower side) Z2 than the first outer horizontal member 320c. Therefore, the reinforcing bar frame 300 can further improve the holding power of the vertical bar unit 210 of the reinforcing bar complex 200 in the planned position.

Further, in this embodiment, the diagonal member 340 includes an upper and lower connecting diagonal member 341 whose one end is connected to the first outer horizontal member 320c and the other end is connected to the second outer horizontal member 320d. The first vertical connecting diagonal member 341a and the second vertical connecting diagonal member 341b of the upper and lower connecting diagonal member extend in a direction along the side surface of the outer longitudinal strip in a crossed state. Therefore, the diagonal member 340 can further maintain the parallelism and verticality of the planned position of the vertical reinforcement unit 210.

Further, in this embodiment, the inner horizontal member 310 has an inner notch portion 311. Further, the outer horizontal member 320 has an outer notch portion 321. By attaching these inner horizontal members 310 and outer horizontal members 320 to the vertical reinforcement unit 210, the inner horizontal members 310 and the outer horizontal members 320 can accurately adjust the interval between the inner vertical reinforcements 211 and the outer vertical reinforcements 212 of the vertical reinforcement unit 210. can be held.

Further, in this embodiment, the reinforcing bar frame 300 is arranged in the vertical bar space A1. Therefore, in the reinforcing step, when the horizontal reinforcement unit 220 is inserted into the vertical reinforcement unit 210 from the upper Z1 to the lower Z2, the reinforcement can be arranged without interfering with the reinforcing bar frame 300.

Furthermore, in this embodiment, the reinforcing bar frame 300 is fixed at its joints with bolts or the like, and can be manufactured, attached, and removed easily and in a short time without the need for welding. Further, the reinforcing bar frame 300 only needs to be installed in a portion of the central portion of the vertical bar unit 210, and the manufacturing cost is low. Furthermore, since the reinforcing bar frame 300 can be removed and repurposed, the more times it is constructed, the more economical it becomes.

Further, in this embodiment, the reinforcing bar frame 300 can be repurposed and effectively utilized in reinforcing work for other buildings.

Note that the present invention is not limited to the above embodiment. Further, the components in one embodiment include those that can be easily imagined by those skilled in the art, those that are substantially the same, and those that are in the so-called equivalent range. Furthermore, the components disclosed in one embodiment can be combined as appropriate.

For example, the chain block used for position adjustment in this embodiment may be adjusted by using a jack or the like instead. In the reinforcement arrangement method according to the present invention, the method for adjusting the position of the vertical reinforcement unit is not particularly limited to this embodiment.

Further, the shape and size of the reinforcing bar composite of the present invention are not particularly limited. For example, the reinforcing bar composites may be formed in a circular arrangement on a reinforcing bar base so as to have a cylindrical shape. The reinforcing bar frame of the present invention can be applied with the shape, dimensions, etc. set appropriately according to the shape and size of the reinforcing bar composite.

Further, the positioning step of the present invention may be performed each time the members of the reinforcing bar frame 300 are attached to the vertical bar unit 210 one by one in the attaching step.

Moreover, the configuration of the members of the reinforcing bar frame 300, such as the shape, length, and dimensions, can be appropriately set in consideration of the reinforcement work to be applied. Further, the components in the above-described embodiments can be appropriately replaced with well-known components without departing from the spirit of the present invention.

100 Rebar foundation 101 Work scaffolding 200 Reinforcement complex 210 Vertical bar unit 211 Inner longitudinal bar 212 Outer longitudinal bar 220 Horizontal reinforcing bar unit 221 Inner tie bar 222 Outer tie bar 300 Reinforcement frame 310 Inner horizontal member 311 Inner notch 320 Outer horizontal Material 321 Outer notch 320c First outer horizontal member 320d Second outer horizontal member 330 Inner and outer joint members 340 Diagonal member 341a First upper and lower connecting diagonal member 341b Second upper and lower connecting diagonal member 340c Third diagonal member 400 Brace member A1 Vertical reinforcement Space A2 Horizontal reinforcement space C Crane K1 First inclination direction K2 Second inclination direction P1 Inside P2 Outside

Claims (6)

A longitudinal reinforcement having a plurality of inner longitudinal reinforcements arranged at predetermined intervals and erected in the vertical direction, and a plurality of outer longitudinal reinforcements arranged at predetermined intervals outside the inner longitudinal reinforcements and erected in the vertical direction. A steel frame that is attached to the unit,
an inner horizontal member that extends along a horizontal direction perpendicular to the vertical direction and maintains intervals between the plurality of inner vertical bars;
an outer horizontal member extending along the horizontal direction and maintaining intervals between the plurality of outer vertical bars;
an inner and outer joint member that is connected to the inner horizontal member and the outer horizontal member and maintains a distance between the inner longitudinal reinforcement and the outer longitudinal reinforcement;
a diagonal member attached to the outer longitudinal reinforcement and extending in a direction along a plane on which the plurality of outer longitudinal reinforcements are arranged and in an inclined direction inclined with respect to the vertical direction;
Reinforced frame with. The outer horizontal member extends at least along the horizontal direction and is provided below the first outer horizontal member in the vertical direction than the first outer horizontal member that maintains the interval between the plurality of outer vertical bars. , a second outer horizontal member extending along the horizontal direction and maintaining the spacing between the plurality of outer vertical bars;
The diagonal member includes an upper and lower connecting diagonal member extending in the inclination direction and having at least one end connected to the first outer horizontal member and the other end connected to the second outer horizontal member. Reinforced frame as described in . The reinforcing bar frame according to claim 2, wherein a plurality of said upper and lower connection diagonal members are provided, and at least two of them intersect. The inner horizontal member has an inner notch cut out according to the interval between the plurality of inner vertical bars,
The reinforcing bar pedestal according to any one of claims 1 to 3, wherein the outer horizontal member has an outer notch portion cut out according to an interval between the plurality of outer vertical reinforcements. The inner horizontal member, the outer horizontal member, the inner and outer joint members, and the diagonal member are arranged in a vertical reinforcement space between the inner longitudinal reinforcement and the outer longitudinal reinforcement. The reinforcing bar frame according to any one of Item 3. A longitudinal reinforcement having a plurality of inner longitudinal reinforcements arranged at predetermined intervals and erected in the vertical direction, and a plurality of outer longitudinal reinforcements arranged at predetermined intervals outside the inner longitudinal reinforcements and erected in the vertical direction. A reinforcement arrangement method using a reinforcing bar frame attached to a unit,
an inner horizontal member that extends along a horizontal direction perpendicular to the vertical direction and maintains the spacing between the plurality of inner longitudinal reinforcements; and an inner horizontal member that extends along the horizontal direction and maintains the spacing between the plurality of outer longitudinal reinforcements. an outer horizontal member, an inner and outer joint member that is connected to the inner horizontal member and the outer horizontal member and maintains a distance between the inner longitudinal reinforcement and the outer longitudinal reinforcement, and an inner and outer joint member that is attached to the outer longitudinal reinforcement and that A reinforcing bar frame including a diagonal member extending in a direction along the surface on which the outer longitudinal reinforcement is arranged and in an inclined direction inclined with respect to the vertical direction, is provided between the inner longitudinal reinforcement and the outer longitudinal reinforcement. an installation step for placing the vertical reinforcement in the vertical reinforcement space between the two and attaching the vertical reinforcement unit to the vertical reinforcement unit;
an alignment step of aligning the vertical reinforcement unit using the reinforcing bar frame;
a reinforcing step of arranging a horizontal reinforcing bar unit that is arranged in a space other than the vertical reinforcing space and extending along the horizontal direction to the vertical reinforcing bar unit;
a removal step of removing the reinforcing bar frame from the vertical bar unit;
A reinforcement arrangement method using a reinforcing bar frame equipped with.

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