JPH10216878A - Build up method, build up device and build up jig for reinforcing cage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a build up method, build up device and build up jig for a reinforcing cage which can improve the efficiency of build up work of the reinforcing cage, reduce the cost and restrain the build up site to the min. limit. SOLUTION: Posts 1 projecting arms 12 at plural steps preliminarily putting horizontal reinforcement 21 in the reinforcing cage, are stood on the peripheral surface of a tubular body so as to be rotatable while centering the axial line, and arranged at two lines along both surfaces of the outer shape of constructing scheduled reinforcing cage. The horizontal reinforcement 21 group is preliminarily put to each arm in the condition of mutually facing each arm 12 of the faced parts interposing the reinforcing cage. Reinforcement to shearing and vertical reinforcement groups are connected with the horizontal reinforcement group, and after manufacturing the reinforcing cage, the posts 1 are rotated to swingly shift the arms 12 to the outside of the reinforcing cage and the engagement of the reinforcing cage with the arms is released, and the reinforcing cage is hung upward with a hanging device. Further, the build up jig for the reinforcing cage is composed of a crossing clamp for holding the crossing part between the horizontal reinforcement and the vertical reinforcement in the reinforcing cage and a space holding clamp for holding both of the vertical reinforcements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling a reinforced cage and an assembling jig.

[0002]

In the construction of a concrete structure, a concrete is generally cast after assembling a reinforcing bar inside a formwork. However, in the case of a side wall of an underground tank or the like, if the wall thickness of the side wall is thin, it is extremely difficult to assemble the reinforcing bar inside the form frame, and the danger is large. Therefore, there has been proposed a method of assembling a reinforced cage at another place, and then transporting and installing the reinforced basket to a construction location of a concrete structure.

[0003] One of the methods is a method of assembling a reinforced cage in a state of being laid on a gantry, suspending the reinforced cage with a crane or the like, and transporting the reinforced cage to a predetermined place. However, in the case of this method, since the reinforcing bar cage is deformed when it is raised, it is necessary to firmly manufacture the frame of the reinforcing bar cage, and there is a problem in terms of labor and cost.

[0004] As another method, there is a method of assembling a reinforcing bar cage in a state of being laid on a gantry as described above, and then raising the reinforcing bar cage together with the gantry. However, in the case of this method, a device for raising the reinforcing bar together with the frame becomes large-scale, which causes problems such as cost and failure.

Furthermore, in the case of the above two prior arts, since the assembling work is performed with the reinforcing bar laid down, a large assembling place is required, and there is a difficulty in securing land.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can improve the efficiency of assembling reinforced cages, reduce costs, and minimize the number of sites for assembly. An object of the present invention is to provide an assembling method, an assembling apparatus, and an assembling jig for a reinforced cage.

[0007]

According to the present invention, as a means for solving the above-mentioned problem, a plurality of arms for temporarily placing transverse bars of a reinforcing bar cage are provided on a peripheral surface of a pipe body. The columns are erected so as to be rotatable about the axis, and are arranged in two rows along both sides of the outer shape of the reinforcing bar to be constructed, and face each arm of the supporting column that sandwiches the reinforcing bar. In a state where the horizontal streak group is temporarily placed on each arm in the aligned state, and a shear reinforcing bar and a vertical streak group are connected to the horizontal streak group to produce a reinforcing bar cage, the reinforcing bar cage is slightly lifted by a lifting device. Then, the column is rotated to move the arm to the outside of the reinforcing bar cage, the engagement between the reinforcing bar cage and the arm is released, and the reinforcing bar is suspended upward from between the columns by the lifting device. Provided is a method of assembling a reinforced cage, which is characterized by raising.

According to a second aspect of the present invention, there is provided a support having a plurality of arms provided on a peripheral surface of a tubular body for temporarily placing a horizontal bar of a reinforcing bar cage.
The rebar cage is installed so as to be rotatable about an axis and is arranged in two rows along both sides of the outer shape of the rebar cage to be constructed, and a device for raising and lowering the columns is installed at the lower end of each column. With each arm of the supporting column facing each other with the
After temporarily placing the horizontal reinforcing bar group in the system, connecting the shear reinforcing bars and the vertical reinforcing bar group to these horizontal reinforcing bar groups to produce a reinforcing bar cage, while the reinforcing bar cage is suspended by the lifting device, the column is supported by the lifting device. The arm is pivoted to the outside of the rebar cage by rotating the column, and then the arm is disengaged from the rebar cage, and the rebar cage is lifted up from between the columns by the lifting device. The present invention provides a method for assembling a reinforcing cage, characterized by being lifted.

According to a third aspect of the present invention, in the assembling apparatus used in the method of assembling a reinforced cage according to the first or second aspect, the arm for temporarily placing the horizontal reinforcing bars of the reinforced cage on the peripheral surface of the pipe body is provided in a plurality of stages. The protruding strut is erected rotatably around the axis,
Further, the present invention provides an assembling apparatus for a reinforcing bar, wherein the reinforcing bar is arranged in two rows along both sides of the outer shape of the reinforcing bar to be constructed.

According to a fourth aspect of the present invention, there is provided an apparatus for assembling a rebar cage according to the third aspect, wherein a device for elevating and lowering the column is installed at a lower end portion of the column. An assembly device is provided.

According to a fifth aspect of the present invention, in the apparatus for assembling a reinforced cage according to the third or fourth aspect, a scaffold is erected between the columns opposed to each other with the reinforced cage interposed therebetween. A rebar basket assembling device, characterized in that a scaffold receiving arm is provided which pivots around an axis of a column independently of an arm for temporarily placing a horizontal line.

According to a sixth aspect of the present invention, an orthogonal clamp for holding a proper position of an intersection of a horizontal bar and a vertical bar of a reinforcing bar to prevent a displacement of an intersection of a horizontal bar and a vertical bar, and holding the vertical bars. Accordingly, the present invention provides an assembly jig for a reinforcing bar cage, which comprises an interval holding clamp for securing a predetermined interval between vertical streaks.

According to a seventh aspect of the present invention, in the jig for reinforcing a reinforced cage according to the sixth aspect, a suspending device for lifting the reinforced cage is connected to a portion of the spacing holding clamp located between the vertical bars. Provided is a jig for assembling a reinforced cage, characterized in that a hole is formed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. <A> Structure of Reinforcing Bar Support As shown in FIG. 3, the reinforcing bar supporting column 1 is provided with a plurality of reinforcing bar receiving arms 12 for temporarily placing a horizontal bar 21 of a reinforcing bar cage on the peripheral surface of a tube 11. And configure.

That is, the required number of the reinforcing bar receiving arms 12 are provided in a direction perpendicular to the axis of the column 1 and at predetermined intervals in the axial direction. In addition, arm 1
The upper surface of 2 has a concave portion 13 for mounting the horizontal streak 21. The concave portions 13 are provided as appropriate according to the number of horizontal bars 21 arranged in the horizontal direction.

Further, the reinforcing bar receiving column 1 is erected rotatably about its axis. For example, a structure in which the upper and lower ends of the reinforcing bar receiving column 1 are rotatably supported by the connecting member 3 as shown in FIG. 3 is conceivable. The connecting member 3 is provided with small-diameter shaft tubes 32 and 33 on both upper and lower end surfaces of a large-diameter cylindrical support portion 31.
Is projected.

As shown in FIG. 1, the support portion 31 is provided with a support 4 standing upright outside the reinforcing bar support 1 via a support member 34.
Etc. are supported. The ends of the rebar supporting posts 1 are fitted to the shaft pipes 32 and 33 in a loosely fitted state so as to be rotatable about the axis. Then, by rotating the reinforcing bar receiving column 1, the reinforcing bar receiving arm 12 is connected to the reinforcing bar receiving column 1.
Turn around. In addition, the reinforcing rod receiving column 1 is a connecting member 3.
And a required number of splicers are added vertically in the vertical direction, so that a reinforcing bar cage having a predetermined height can be assembled.

Further, as shown in FIG. 1, the inner scaffold 41 is erected between the reinforcing bar receiving columns 1 opposed to each other with the reinforcing bar cage interposed therebetween. Therefore, as shown in FIG. A scaffold receiving arm 5 which turns independently of the arm 12 is protruded. The swiveling structure of the scaffold receiving arm 5 is such that, for example, a scaffold receiving member is provided on the peripheral surface of the short tube 51, which is loosely fitted to the shaft tube 32 or 33 of the connecting member 3, in a direction perpendicular to the axis of the short tube 51. A structure in which the arm 5 is protruded may be considered.

Further, as shown in FIG. 1, a lifting device such as a jack 6 for raising and lowering the reinforcing bar support column 1 in the axial direction is installed at the lower end of the reinforcing bar receiving column 1.

<B> Installation of Reinforcing Bar Supporting Column The reinforcing bar receiving column 1 configured as described above is, as shown in FIG.
Are arranged in two rows along both sides of the outer shape of the reinforcing bar to be constructed. In addition, a frame scaffold 42 around the support 4,
An outer scaffold 43 is assembled between the support 4 and the reinforcing bar support 1.

<C> Arrangement of horizontal streaks As shown in FIG. 1, first, the opposing reinforcing bar receiving posts 1, 1 positioned at the lowermost stage are rotated so that the reinforcing bar receiving arms 12 face each other. Reinforcing bar arm 12 with horizontal bar 2
Place 1 temporarily. In this case, an operator rides on the fixed scaffolding 44 installed on the substrate to perform the bar arrangement work.

Next, the scaffold receiving arms 5 face each other, and the inner scaffold 41 is erected between them. Then, the horizontal bars 2 are placed on the rebar receiving arms 12 facing each other by rotating the reinforcing bars 1 and 1 of the next stage from above the inner scaffold 41.
Perform the temporary placement work of 1. Similarly, the horizontal bar 21 is arranged up to the space between the uppermost reinforcing bar receiving posts 1 and 1.

<D> Installation of a jig for assembling the reinforcing bar As shown in FIG. 2, the reinforcing bar 22 was manufactured by joining the shear reinforcing bars 22 in the transverse direction of the horizontal bars 21 and further connecting the vertical bars 23. Thereafter, before lifting the reinforcing bar 2, an assembling jig including an orthogonal clamp 7, an interval holding clamp 8, and a hanging piece clamp 9 is attached to an appropriate position of the reinforcing bar 2 as shown in FIG. 7.

As shown in FIGS. 4 and 5, the orthogonal clamp 7 is provided on two plate bodies 71a and 71b, respectively.
The U-shaped holding portions 72a and 72b for holding the vertical
It protrudes from the place. And both plate bodies 71a, 7
1b is attached to the intersection of the horizontal streak 21 and the vertical streak 23, and is fastened with a bolt and stuck together.

The interval holding clamp 8 includes two plate members 81.
U-shaped holding portions 82a and 82b for holding the vertical stripes 23 are respectively provided at two locations a and 81b. Then, the two plate bodies 81a and 81b are attached between the adjacent vertical stripes 23, and are fastened with bolts and stuck together.

As shown in FIG. 6, the suspension piece / clamp 9 has the same shape as the gap holding clamp 8 and has a plate material 91.
Is formed in a portion of the plate material 91 located between the vertical stripes 23, and a hole 92 for a shackle for hooking a crane is formed. And as shown in FIG. 7, it is attached near the upper end of the reinforcing bar 2.

<E> Lifting of Reinforced Basket After attaching each clamp to the reinforced basket 2 as described above, a head reinforcing frame 24 is attached to the upper end of the reinforced basket 2 as shown in FIG. -Hang the hanging jig 45 such as
Hook 9 in the shackle hole 92 of the dual-purpose clamp 9.

The scaffold receiving arm 5 is swiveled to move the inner scaffold 4
Remove all 1s. Next, while the rebar basket 2 is hung by a crane or the like, the jack 6 is contracted to lower the rebar receiving column 1. Then, the reinforcing bar receiving column 1 is rotated to move the reinforcing bar receiving arm 12 to the outside of the reinforcing bar cage 2, and the engagement between the reinforcing bar cage 2 and the reinforcing bar receiving arm 12 is released. These operations are performed from the outer scaffold 43. In this way, the reinforcing cage 2 can be lifted upward from one row of the reinforcing bar receiving columns by a crane or the like.

It is to be noted that, without using the lifting device such as the jack 6, the reinforcing rod support 2 is rotated by rotating the reinforcing rod supporting column 1 while the reinforcing cage 2 is slightly lifted up with a crane or the like. The engagement with the system 12 can also be released.

[0030]

Since the present invention has been described above,
The following effects can be obtained. <A> Since the rebar basket can be assembled in an upright state without being laid down, the conventional lifting work is unnecessary. Further, since a deformation at the time of lifting can be prevented, a strong reinforcing frame is not required. Therefore, the working efficiency can be improved and the cost can be reduced, and the site for assembly can be minimized.

<B> By using an assembling jig composed of various clamps, the reinforcing cage can be assembled firmly without breaking the shape.

<C> The use of the clamp for both the lifting piece and the lifting piece makes it possible to carry out the lifting work of the reinforced cage easily and reliably.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a process of temporarily placing a horizontal streak.

FIG. 2 is an explanatory view of a rebar cage lifting process.

FIG. 3 is an explanatory view of a reinforcing bar support column.

FIG. 4 is an explanatory view of an orthogonal clamp and an interval holding clamp.

FIG. 5 is an explanatory view of an orthogonal clamp and an interval holding clamp.

FIG. 6 is an explanatory view of an orthogonal clamp and a clamp used as a suspension piece.

FIG. 7 is an explanatory view of a mounting state of each clamp.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Munenori Tonami 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Taisei Construction Co., Ltd. (72) Inventor Hideyuki Okuda 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo No. Taisei Construction Co., Ltd. (72) Inventor Sadato Takagi 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. (72) Inventor Toru Komatsuhara 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas (72) Inventor Yoichi Tsutsumi 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd.

Claims (7)

[Claims] An arm for temporarily placing a horizontal bar of a reinforcing cage on a peripheral surface of a tubular body is provided with a plurality of protruding arms, which are rotatable around an axis, and the outer shape of the reinforcing cage to be constructed. Are arranged in two rows along both sides of each of the above, and the transverse muscle groups are temporarily placed on each arm in a state where the arms of the supporting columns facing each other with the reinforcing cage therebetween face each other, and are sheared to these transverse muscle groups. After connecting the reinforcing bars and the vertical bars to form a reinforcing bar, while the reinforcing bar is slightly lifted by a lifting device, the support is rotated to move the arm to the outside of the reinforcing bar, A method for assembling a reinforcing bar, comprising releasing the engagement between the reinforcing bar and the arm, and lifting the reinforcing bar upward from between the columns by the lifting device. 2. An outer shape of a rebar basket to be constructed, in which a column having a plurality of arms provided thereon for temporarily placing transverse bars of the rebar cage on the peripheral surface of the tubular body is rotatably mounted around an axis. A device for raising and lowering the column is installed at the lower end of each column, and each arm of the column facing each other with the rebar cage interposed is faced with each arm. -After temporarily arranging the horizontal reinforcing bar group on the ground, connecting the shear reinforcing bars and the vertical reinforcing bar group to the horizontal reinforcing bar group to produce a reinforcing bar cage, while the reinforcing bar cage is suspended by the lifting device, the column is supported by the lifting device. The arm is then pivoted to the outside of the reinforced cage to release the engagement between the reinforced cage and the arm, and the lifting device is used to move the reinforced cage from between the columns. A method of assembling a reinforced cage, characterized by being lifted upward. 3. The assembling apparatus used in the method for assembling a reinforcing cage according to claim 1 or 2, wherein a column having a plurality of arms for temporarily placing transverse bars of the reinforcing cage on a peripheral surface of the tube is provided. An assembling apparatus for a reinforcing steel cage, wherein the reinforcing steel basket is installed so as to be rotatable about an axis and arranged in two rows along both sides of the outer shape of the reinforcing steel cage to be constructed. 4. An apparatus for assembling a reinforced cage according to claim 3, wherein a device for raising and lowering the column is installed at a lower end portion of the column. 5. An apparatus for assembling a reinforcing bar cage according to claim 3, wherein a scaffold is installed between the struts facing each other with the reinforcing bar basket interposed therebetween, so that the temporary reinforcing bar is provided halfway along each strut. A scaffolding arm which pivots around the axis of the column independently of the arm; 6. An orthogonal clamp for holding a cross section of a horizontal bar and a vertical bar of a reinforcing bar to prevent a displacement of an intersection of a horizontal bar and a vertical bar. A jig for assembling a reinforced cage, comprising: a spacing holding clamp for securing a predetermined spacing to the cage. 7. A jig for assembling a reinforcing cage according to claim 6, wherein a hole for connecting a suspending device for lifting the reinforcing cage is formed in a portion located between the vertical bars of the spacing holding clamp. A jig for assembling a reinforced cage.