JP2002356845A - Method for assembling cage for use in cast-in-place concrete pile, in weldless manner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rigidly assemble a cage for use in a cast-in-place concrete pile, in a weldless manner. SOLUTION: There is provided a method for assembling the cage for use in the cast-in-place concrete pile, in a weldless manner, according to which an intersection (X1) between a main reinforcement (1) and a hoop (2) is bound by a first fastener (F1) formed of a single metallic spring wire, and an intersection (X2) between the main reinforcement (1) and an auxiliary ring (3) is bound by another second fastener (F2) formed of a single metallic spring wire, for each of unit cages (C1), (C2), (C3). Further, a joint portion (H) between the adjacent main reinforcements (1) in each of the unit cages (C1) to (C3) is bound by a further different third fastener (F3) formed of a single metallic spring wire. In this manner, the cage (C) having an entire length (L) corresponding to the length of the desired cast-in-place concrete pile is constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a steel cage in a cast-in-place concrete pile without welding.

[0002]

2. Description of the Related Art In general, cast-in-place concrete piles (underground piles), which serve as seismic foundations of buildings, are inserted into a pile hole of a certain depth (for example, about 30 to 40 m) excavated in the ground, into a cylindrical shape (for example, about 1 to 40 m). It is constructed by inserting a concrete cage with a diameter of ３3 m) and then pouring concrete.

[0003] The above-mentioned rebar cage has a plurality of main bars (longitudinal bars), a plurality of hoop bars circumscribing the main bars at a relatively fine pitch, and a crossing state at a relatively coarse pitch to the main bars. And a plurality of reinforcing rings (flat bars) inscribed therein.
-51921, JP-A-5-192731, JP-A-6-19231
JP-A-167019, JP-A-6-210386, JP-A-7-62650 and JP-A-10-280402 have been proposed.

[0004]

However, in each of the above-mentioned known inventions, the intersection between the main reinforcement and the hoop reinforcement and the intersection between the main reinforcement and the reinforcing ring are also welded. Even if the work can be performed efficiently, it requires extremely troublesome and labor-intensive welding work, and this can be said in the same manner even with the use of welding metal fittings described in JP-A-7-62650. Also, it is not possible to eliminate variations in the welding state.

[0005] In this regard, even if the welding apparatus described in JP-A-6-170535 is used to automate the welding, a welding machine, a welding rod, a generator and the like are indispensable. In addition, there is a fatal problem that the inherent strength of the base material (rebar) is reduced afterwards due to the high heat generated during welding, so that it tends to be avoided.

Also, a predetermined unit length (for example, about 8 to 12
m) A joint method of adding adjacent main reinforcing bars of the unit reinforced cage in order to complete it as a reinforced cage of the entire length corresponding to the target cast-in-place concrete pile from the plurality of unit reinforced cages assembled in m) Is disclosed in JP-A-6-158.
No. 653 has been proposed, but even in this case, the welded part is to be arc-welded at the construction site.
Again, there is the problem described above, and there is also a problem that the work period is lengthened because welding work cannot be performed in rainy weather.

Japanese Patent Application Laid-Open No. 6-158655 also discloses that the main muscles are tied together with a thick binding wire. In the case of such a binding wire made of an iron wire having no spring property (a so-called number wire). Insufficient binding strength makes it easy for the reinforcing bars to be deformed due to the relative vertical movement and run-out of the main bars, and the thicker the bars, the harder it is to tie them up, which necessitates heavy labor and improves work efficiency. I can't let it.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to drastically solve the above-mentioned problems. For this purpose, a plurality of main reinforcements arranged in parallel along the direction of the cylinder core are provided. A plurality of unit rebar cages, each consisting of a plurality of hoop bars circumscribing in a crossing state and a plurality of auxiliary rings also inscribed in a crossing state with the main bar, are connected to the adjacent main bars by connecting and joining the desired cast-in-place concrete piles. In assembling as a reinforced cage of the entire length corresponding to

[0009] The intersection of the main bar and the hoop bar in each unit rebar cage is bound by a first fastener made of one spring metal wire, and the intersection of the main bar and the auxiliary ring is also connected by one spring. While binding with another second fastener made of metal wire,

[0010] In the above-mentioned unit reinforcing bar cage, an extension portion of adjacent main bars is bound by another third fastener also made of one spring metal wire.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 shows an overall length (L) (for example, about 26 to 36 m) and a thickness (for example, corresponding to a target cast-in-place concrete pile). The present invention relates to a cylindrical reinforcing reinforcing cage (C) having a diameter of about 1 to 3 m), which comprises a plurality of unit reinforcing cages (C1) (C1).
2) As will be described later from (C3), they are added and connected at the construction site. Each unit reinforced basket (C1) (C2)
The length (L1) of (C3) is, for example, about 8.5 to 12 m.

In FIGS. 2 and 3 in which each unit rebar basket (C1) (C2) (C3) is extracted and shown, (1) is a plurality of main bars (longitudinal bars) arranged in parallel along the cylinder core direction. ), For example, consisting of a deformed bar with a thickness (diameter) of about 25 to 32 mm.

[0013] (2) is a plurality of hoop bars circumscribed in a crossed state that keeps a relatively fine pitch to the main bar (1), and has a diameter of, for example, about 13 mm, and is a deformed steel bar thinner than the main bar (1). Consists of (3) is a plurality of reinforcing rings which are also inscribed in a crossing state with the main reinforcing bar (1) as the pitch of the hoop (2) is coarser than the pitch of the hoop (2). B) and about 6
It consists of a flat bar (steel plate) having a thickness (T) of ９9 mm.

FIGS. 4 to 11 show each unit of reinforcing bar cage (C1).
(C2) The main reinforcement receiving stand (4) and the main reinforcement receiving arch frame (5) to be used for the assembly and reinforcement work of (C3) are shown. (6) is an arc-shaped concave surface of the main bar receiving stand (4), from which a plurality of main bar receiving claws (7) are protruded inward at a constant pitch.

Reference numeral (8) denotes an arc-shaped convex surface of the main reinforcement receiving arch frame (5), from which a plurality of main reinforcement receiving claws (9) are protruded outward while also maintaining a constant pitch. A plurality of main bars (1) are placed on a pair of upper and lower portions of the arc-shaped convex surface (8) of the main bar-receiving arch frame (5) and the arc-shaped concave surface (6) of the main bar-receiving stand (4). For example, a plurality of main bars (1) forming the unit rebar baskets (C1) (C2) (C3) keep themselves in a parallel state at a constant pitch.

Therefore, each unit rebar basket (C1) (C2)
In assembling (C3), a plurality of the main reinforcement receiving stands (4) are installed in parallel at the construction site as shown in FIGS. 4 and 5, and first, the main reinforcement receiving claws (7) of the concave concave curved surface (6) are formed.
The main bar (1) is locked from above as shown in FIGS.
They are arranged in a plurality of parallel states. In this case, a pair of main bars (1) facing each other at least in the upper position, which is easy for the operator to see, is provided with an index indicating a constant pitch between the hoops (2) and the auxiliary ring (flat bar) (3) to be crossed subsequently. (Not shown).

Next, as shown in FIGS. 8 and 9, a plurality of auxiliary rings (flat bars) (3) which have been wound and formed into a perfect circular shape in advance are placed on the main parallel bars (1). Then, the auxiliary ring (3) is inscribed in a crossing state with the main muscle (1).

After that, the main reinforcement receiving arch frame (5) is fixed to the main reinforcement receiving stand (4) in a state where the main reinforcement receiving arch frame (5) is covered from above as shown in FIG. The main bar (1) is also locked from above from the main bar receiving claws (9) on the curved surface (8), and the main bar (1) is arranged in a plurality of parallel states.

Finally, a plurality of the hoop muscles (2) are circumscribed in a crossed state to the plurality of main muscles (1) in the parallel state.
A pair of locking hooks (10a) and (10b) of which both ends are separated from each other as a pair of locking hooks (10a) and (10b) are used. The hooks (10a) (10a) (10a) (10a) (10a) (10a)
b) is undetachably locked to the main muscle (1). (Z) shows the parallel overlapping portion of the hoop streaks (2) which are wound and overlapped.

In this case, the parallel overlapping portions (Z) of the hoops (2) are alternately displaced in the circumferential direction on the main bend (1), as suggested by FIGS. It is preferable that the overlapping portion (Z) is kept in a state where the phase changes between adjacent ones of the hoop streaks (2). However, the locking hooks (10a) (10
It is possible to lock b) to the same main bar (1) redundantly and wind it around the hoop bar (2) with almost no overlap between the hoop bars (2).

Such a unit reinforced cage (C1) (C2)
The reinforcing tools to be used for the assembling of (C3) and the order of the assembling work at the construction site are not limited to those described above with reference to FIGS. 1), the first fastener (F1) for binding the intersection of the main bar (1) and the hoop bar (2) prepared in advance without performing any welding to the hoop bar (2) and the auxiliary ring (3); Similarly, a second fastener (F2) for binding a crossing portion between the main bar (1) and the auxiliary ring (3), a third fastener (F3) for binding a parallel overlapping portion between the hoop bars (2) and / or the main bar (11). ), And each unit is fixed by hand at the construction site.

Hereinafter, first to third fasteners (F1) (F1)
2) The specific configuration of (F3) will be described sequentially. First, the first fastener (F1) for binding the intersection (X1) of the main muscle (1) and the hoop muscle (2) is a single piano. 13 to 17 from wires and other metal wires exhibiting spring properties.
It is bent as shown in FIG.

That is, in FIGS. 13 to 17 showing the first fastener (F1), (11) is a first winding arm around a hoop streak (2) forming one end of a cut off of a spring metal wire, As a hook type capable of fitting to the arc surface of the hoop muscle (2) crossing the state of overlap with the main muscle (1), the overlap margin (W) between the hoop muscle (2) and the main muscle (1) is formed.
It is bent in the shape of an arc having a working length (L2) slightly longer than 1), and is wrapped around the hoop streak (2) from the outside as apparent from FIGS.

(12) The first winding arm (1)
A direction traversing the inside of the main bar (1) continuously from the bending root of 1) (a direction substantially parallel to the hoop bar (2)).
The main bar (1) once bent about 90 degrees (α)
And is bent in a substantially U-shape in a flat / bottom view, which can fit the arc surface of the main bar (1).

The winding arch (12) is wrapped around the main bar (1) from the inside, as is apparent from FIGS. 15 to 17, so that the main bar (1) is held. (L3) indicates the bending diameter of the winding arch (12), and has a size substantially corresponding to the thickness of the main reinforcement (1).

Further, (13) is continuous from the bent end of the winding arch (12), in the same direction parallel to the first winding arm (11) at one end of the cut-off end, and once more about 90 degrees. (B) a second wrap arm around the hoop streak (2), which is considerably longer than the first wrap arm (11). (L4) indicates a constant working length of the second winding arm (13), preferably about 2.5 times the working length (L2) of the first winding arm (11).
At 3.5 times, the arc-shaped base portion (13a) corresponding to the first wrapping arm (11) is wrapped around the arc surface of the hoop streak (2) from the outside.

That is, a short first wrapping arm (11) and a long second wrapping arm (13), which face each other and are parallel to each other, via a wrapping arch (12) substantially corresponding to the thickness of the main bar (1). The pair of left and right sides of the main bar (1) are wound around the hoop bar (2) intersecting the main bar (1) in a superimposed manner from the outside in a constrained state. ) And the hoop muscle (2) are locked and maintained in a firm anti-sway state.

In this case, when viewed from the lateral direction as shown in FIG. 17, the first winding arm (11) having an arc shape is provided;
Similarly, the root portion (13a) of the second winding arm (13)
And a radius (R) at which the turning position of the winding arch (12) with respect to the main bar (1) can be used as a fulcrum (P1).
1) is the overlap margin (W) between the main muscle (1) and the hoop muscle (2).
It is slightly longer than 1) and its main reinforcement (1)
Can be wound from the outside without hindrance to the hoop muscle (2) intersecting with.

In this regard, in the illustrated embodiment, the first winding arm (1) in the second winding arm (13) is used.
The intermediate part (13b) corresponding to the tip part of 1) is once bent into a stepped form as a smooth obtuse angle (γ) in a side view, but the intermediate part (13b) transitions to an unknown linear form. It can be continued.

(14) is further continued from the extension end of the second winding arm (13), and
Approximately the same as 2), it is a hook hooked around the main bar (1) bent by about 90 degrees (δ) in a direction crossing the inside of the main bar (1), and fits into the arc surface of the main bar (1). It is bent in a substantially U-shape, V-shape or L-shape when viewed from the flat / bottom view. The hook (1)
4) is the other end of the spring metal wire cut off, and the second working arm (13) has a constant working length (L).
The upper and lower pair of the winding arch (12), which keeps 3) apart, holds the arc surface of the main bar (1) in an overlapping manner from the inside.

Using such a first fastener (F1), an intersection (X1) between the main muscle (1) and the hoop muscle (2) is used.
18 and 19, a first wrapping arm (11) forming one end of the spring metal wire and a second wrapping arm (13) facing the first winding arm, as shown in FIGS. Is wound around the hoop muscle (2) from the outside in a temporarily stopped state, and the winding arch (12) interposed between the left and right sides is traversed so as to be held inside the main muscle (1).

In the state where the first fastener (F1) is temporarily fixed to the intersection (X1) of the main reinforcement (1) and the hoop reinforcement (2), the long second winding arm (13) is used.
While extending substantially parallel to the main bar (1), the hook (1) forming the other end of the detachable springy metal wire.
4) is still in a free state floating outward from the main muscle (1).

Then, the second winding arm (1)
20 and 21, while forcibly pushing down the inside of the main muscle (1) while grasping the operation lever 3) as an operation lever, the winding hook (1) at the extension end thereof is used.
4) is temporarily pushed and opened in the lateral direction to escape from the main bar (1), whereby the winding hook (14) is moved to the position shown in FIG.
As shown by the dashed line, cross the inside of the main bar (1),
Release the operating hand.

Then, as shown in FIGS. 15 to 17, the left and right pair of the first and second winding arms (11) and (13) are connected to the circular arc surface (knot) of the hoop muscle (2) from the outside and the winding is performed. The hanging arch (12) completely bites the arc surface (knot) of the main bar (1) from the inside, and the intersection (X1) of the main bar (1) and the hoop bar (2) is tightly bound. On the other hand, the winding hook (14) located at the extension end of the second winding arm (13) bites the arc-shaped surface (knot) of the main bar (1) from the inside in a resilient holding state. Result.

In the binding operation, the long second winding arm (13) is connected to the base (13) with respect to the hoop muscle (2).
The bending position of the main reinforcing bar (1) is deformed so that the hooking position (a) of the main bar (1) is bent against the fulcrum (P1) of the main bar (1) against the spring force of the metal wire. Since it will repress the surface (knot) from the inside resiliently, the intersection (X) of the main bar (1) and the hoop bar (2)
1) can be bound in a stable and strong binding state, and even if it receives external force such as vibration or impact, there is no danger that the first fastener (F1) will fall off. There is no possibility that the rebar cage (C) may be distorted or twisted due to relative swing motion with (2), or other irregular deformation may occur.

Next, a second portion for binding an intersection (X2) between the main reinforcement (1) and the auxiliary ring (flat bar) (3).
The fastener (F2) is also formed by bending a single piano wire or other metal wire having spring properties as shown in FIGS.

That is, in FIGS. 22 to 31 showing the second fastener (F2), (15) is a first latching arm to an auxiliary ring (3) which forms one end of a spring metal wire. It extends in the vertical direction substantially parallel to the main bar (1), but its working length (L5) is
Is smaller than the band width (B) of the auxiliary ring (3), and the plate surface (3) of the auxiliary ring (3)
A holding claw (16) that can make point contact with a) from inside is protruded in a mountain shape.

(17) is the first latch arm (1)
5) A continuation arch from the root portion (lower end portion in the drawing) of the main bar (1) once bent by about 90 degrees (ε) in a direction crossing the outside of the main bar (1); It is bent in a substantially U-shape viewed from a flat surface and a bottom surface, which can be fitted to the arc surface of the main reinforcement (1).

The winding arch (17) receives the lower cutting edge (3b) of the auxiliary ring (3) and is wound around the arc of the main bar (1) from outside. . (L6) is the bending diameter of the wrapping arch (17) substantially corresponding to the thickness of the main bar (1),
(L7) is the bending action length of the winding arch (17), which is slightly longer than the overlap margin (W2) of the main bar (1) and the auxiliary ring (3).

Further, (18) continues from the substantially U-shaped bent front end of the winding arch (17), and then in the same direction (upper side in the drawing) facing and parallel to the first latch arm (15). A second latch arm to the auxiliary ring (3) once bent by about 90 degrees (ζ), which extends considerably longer than the band width (B) of the auxiliary ring (3). (L8) indicates the constant working length of the second latch arm (18), preferably about 2.5 to 2.5 mm of the band width (B) in the auxiliary ring (3).
It is dimensioned 3.5 times.

Moreover, the second latch arm (18)
From the vicinity of the base (lower end in the drawing) facing the plate surface (3a) of the auxiliary ring (3), the holding claw (19) arranged in parallel with the holding claw (16) of the first latch arm (15)
However, it also protrudes as a mountain shape that can make point contact with the plate surface (3a) of the auxiliary ring (3) from the inside.

That is, the short first latch arms (1) facing each other and arranged side by side via the winding arch (17) having a bending diameter (L6) substantially corresponding to the thickness of the main bar (1).
5) and a pair of left and right second latching arms (18) are superimposed on the plate surface (3a) of the auxiliary ring (3) from the inside in a constrained state with the main bar (1) interposed therebetween. In particular, the first and second latching arms (15) and (18) of the first and second latching arms (15) and (18) can be stopped.
Combined with the pressing force, the main bar (1) and the auxiliary ring (3) are locked and maintained in a firm anti-sway state.

(20) is further continued from the extended end (upper end shown in the figure) of the second latch arm (18), and crosses the outside of the main bar (1) almost in the same manner as the above-mentioned winding arch (17). A hook that is wound around the main bar (1) bent by about 90 degrees (η) in the direction in which the main bar (1) is bent, and can be fitted to the arc surface of the main bar (1). Or, it is bent in an L shape.

The hook (2) wound around the main bar (1)
0) is the other end of the spring metal wire cut off, and the constant working length (L) of this and the second latch arm (18).
8) The upper and lower pair of the winding arch (17) that keeps and separates from each other holds the arc surface of the main bar (1) in an overlapping manner from the outside.

Using such a second fastener (F2), an intersection (X2) between the main reinforcement (1) and the auxiliary ring (3) is formed.
In the binding operation, first, the short first latch arm (1
A pair of left and right pairs of 5) and a long second latch arm (18) facing and parallel to this are temporarily latched from the inside to the auxiliary ring (3) as shown in FIG. Winding arch (17), main bar (1)
Is wrapped around the circular arc surface from the outside in a wrapped state, and the lower kerf surface (3b) of the auxiliary ring (3) is received by the wrapped arch (17).

Such a main bar (1) and an auxiliary ring (3)
In the temporary fastening state of the second fastener (F2) with respect to the crossing portion (X2) with the long second latch arm (1).
8) extends substantially parallel to the main bar (1) and upwards in the figure, but the hook (20) forming the other end of the spring metal wire is still floating inward from the main bar (1). In free state.

Therefore, the second latch arm (1)
While grasping the operation lever 8) as an operation lever, as indicated by the chain line in FIG. 32 and FIG. ) Is once pushed in the lateral direction to escape from the main bar (1) to open the hook (20).
Is crossed to the outside of the main muscle (1), and then the operating hand is released.

Then, as shown in FIGS. 27 to 31, the left and right pair of the first and second latching arms (15) and (18) are combined with the plate surface (3a) of the auxiliary ring (3) from the inside. The winding arch (17) is the arc surface (knot) of the main reinforcement (1)
And the intersection (X2) between the main bar (1) and the auxiliary ring (3) is locked in a firmly bound state, while the second latch arm (18) is extended. As a result, the winding hook (20) located at the distal end bites the arc surface (knot) of the main bar (1) from outside in a resilient holding state.

In the binding operation, the long second latch arm (1) is forcibly pushed down to the outside of the main bar (1).
8) The middle part is the plate surface (3) of the auxiliary ring (3).
a) and the upper edge (3c) of the front end (3c), which is hung from the inside by itself, flexed and deformed so as to move in a pivoting manner with the hung position as a fulcrum (P2), and at the same time, A winding hook (20), which is an extended end of the second latch arm (18), is latched against an arc surface (knot) of the main reinforcing bar (1) from an outside opposite to a spring force. become.

The auxiliary ring (3) is connected to the support point (P2) of the second latch arm (18) and the fixing point (19) of the second latch arm (18). (P3) and the first and second latch arms (15) and (18) at a total of three points: the fixing point (P4) that comes into contact with the holding claws (16) of the first latch arm (15).
As a result, the pressing is fixed.

For this reason, the auxiliary ring (3) and the main reinforcement (1) are connected to the lower ring edge (3b) of the auxiliary ring (3), which is received by the winding arch (17). Can be bound in a stable and strong binding state, and there is no danger that the second fastener (F2) will fall off even if it receives an external force such as vibration or impact. ) And the auxiliary ring (3), there is no possibility that the rebar cage (C) may be distorted, twisted, or otherwise deformed due to relative swinging motion.

In particular, since the auxiliary ring (3) is pressed by the first and second latching arms (15) and (18) at the above three points (P2), (P3) and (P4) in total. The second fastener (F2) can be used for various auxiliary rings (3) whose band width (B) varies widely and without hindrance, and the thickness (T) of the auxiliary ring (3) can be used. Also, the bending diameter (L6) of the winding arch (17) can be easily changed according to the thickness of the main bar (1).

Further, the third fastener (F3) for binding the hoop muscles (2) parallel overlapping portions (Z) between the main bars (1) and the parallel overlapping portions (Y) between the main bars (1) is As shown in FIGS. 34 to 40, a single piano wire or another metal wire exhibiting spring properties is bent.

That is, the structure of the third fastener (F3) will be described with reference to FIGS. 34 to 40, with the main reinforcement (1) and the hoop reinforcement (2) being collectively referred to as a common reinforcement. As a first winding hook that forms one end of the cut-off metal wire, it is bent into an arch shape that can fit on the arc surface of one of the reinforcing bars (1f) and (2f) in the superposed state.

(22) is the first hook (2)
1) An inner regulation bar that extends linearly in a direction obliquely crossing the inside of both rebars (1f), (1r), (2f), and (2r) in a superposed state, continuously from the bent root portion; From the tip of the extension, the first winding hook (2
To the same outside as 1), the other reinforcing bar (1r) (2
r) a linear hook bar (23) hooked on the arc surface,
Once bent about 90 degrees (θ). (L9)
Indicates the constant acting length of the inner regulating bar (22), and the overlap margin (W3) (W4) of the overlapped portion (Z) (Y) in both rebars (1f) (1r) (2f) (2r). Dimensioned slightly longer than

That is, the first winding hook (21)
The inner regulating bar (22) and the retaining bar (23) are on the same first holding plane indicated by the reference numeral (S1) in FIG. 36 as a whole. In addition, when viewed from the front as shown in FIG. 37, the first holding plane (S1) has both rebars (1f) (1f).
r) (2f) (2r) is in an inclined posture state intersecting the longitudinal center line at a right angle (ι).

During use in such an inclined posture, the first winding hook (21) and the hook bar (2) are used.
According to 3), both rebars (1f) and (1r) in a polymerized state are obtained.
As shown in FIG. 38, (2f) and (2r) are pinched and adhered, and at the same time, both rebars (1f) (1r) (2f) (2f)
The inside of r) is held in a holding state restrained by the inside regulating bar (22).

Further, (24) continuously intersects with the inner regulating bar (22) by about 90 degrees (κ) from the tip of the hooking bar (23) once bent outward as described above. The two rebars (1f), (1r), (2) in a superposed state are bent and extended in the direction (obliquely upward in the drawing).
f) A linear outer restricting bar obliquely crossing the outside of (2r), and together with the inner restricting bar (22) shown in FIG.
Both rebars (1f) (1r) (2f) (2
r).

In this case, the constant working length (L10) of the outer regulating bar (24) is longer than the working length (L9) of the inner regulating bar (22), and preferably the inner regulating bar (22) has a longer working length (L9). About 1.5 to 2.0 of working length (L9)
It is doubled in size.

(25) is about 90 degrees (λ) inward of one of the rebars (1f) and (2f) from the extension end of the outer regulating bar (24) in a direction opposite to the first winding hook (21). ) Is a second winding hook continuously bent only, and is bent into an arch shape, a V-shape, or an L-shape which can fit to the arc surface of one of the reinforcing bars (1f) (1r).

That is, the second winding hook (25)
36, the outer regulating bar (24) and the latch bar (23) are on the same second holding plane indicated by another reference numeral (S2) in FIG. 36, and the second holding plane (S2 )
Is substantially perpendicular to the first holding plane (S1) when viewed from the front, as is apparent from the intersection of about 90 degrees (κ) between the inner regulating bar (22) and the outer regulating bar (24). . Therefore, the second holding plane (S2) also has an inclined posture state that intersects with the longitudinal center lines of the rebars (1f), (1r), (2f), and (2r) at a right angle (μ), as is apparent from FIG. Becomes

During use in such an inclined posture state, the second winding hook (25) and the hook bar (2) are used.
According to 3), both rebars (1f) and (1r) in a polymerized state are obtained.
(2f) and (2r) are also pinched and adhered as shown in FIG. 38, and at the same time, the both reinforcing bars (1f), (1r), and (2f).
The outside of (2r) is held in a holding state restrained by the outside regulating bar (24). Needless to say, the second winding hook (25) for the one reinforcing bar (1f) (2f) forms the other end of the spring metal wire.

As described above, the third fastener (F3) is made of a single springy metal wire, and the first and second holding planes (S1) and (S2) are configured such that the first and second holding planes (S1) and (S2) are about 90 degrees (κ) to each other. Are orthogonal. Moreover, the first holding plane (S1) intersects with the longitudinal center line of both rebars (1f) (1r) (2f) (2r) at a non-perpendicular angle (ι), and is on the first holding plane (S1). The inside regulation bar (22) of both is rebar (1f) (1r) (2f)
While obliquely crossing the inside of (2r), the second holding plane (S2) also intersects the longitudinal center line of both rebars (1f) (1r) (2f) (2r) at a right angle (μ). The outer regulating bar (24) on the second holding plane (S2) is
f) (1r), (2f), and (2r) also cross obliquely outside.

Furthermore, a short constant working length (L9)
Inner regulating bar (22) and long constant working length (L10)
When viewed from the front as shown in FIG. 37, the outer regulating bar (24) has a position (fulcrum) (P5) of the engaging bar (23) of about 90 at the other reinforcing bar (1r) (2r).
Two sides of a so-called right-angled triangle (almost L
A first winding hook (21) located at the tip (one end of the metal wire) of the inner regulating bar (22), and the tip (also a metal wire) of the outer regulating bar (24). And the second winding hook (25) positioned at the other end of the rebar (see FIG. 2), and one of the reinforcing bars (1f) (2f).
It is designed to bite from opposite directions.

That is, the inner regulating bar (22) on the first holding plane (S1) is connected to both rebars (1f) (1r) (2f) (2
r) polymerization allowance (W3) (W
4) The inner regulating bar (22) having a certain working length (L9) slightly longer than that of (4), and the outer regulating bar (24) on the second holding plane (S2) longer than this are perpendicular to the right angle. It has an L-shape corresponding to two sides of a triangle.

Then, the first winding hook (21) located at the tip of the inner regulating bar (22) is used as a fulcrum for the hooking position of the hooking bar (23) with respect to the other reinforcing bars (1r) (2r). (P5), and is in a relational state in which the inner working bar (22) can rotate as a constant working length (L9), that is, a radius (R2).

Therefore, such a third fastener (F)
In the operation of bundling the hoop muscles (2) parallel overlapped portions (Z) between the hoop muscles (2) and / or the main muscles (1) parallel overlapped portions (Y) between the hoop muscles, first, the first holding member is used. As shown in FIGS. 41 and 42, the inner regulating bar (22) on the holding plane (S1) can be traversed in a posture substantially orthogonal to the longitudinal center lines of both reinforcing bars (1f) (1r) (2f) (2r). For example, the working length (L9) of the inner regulation bar (22) is
f) Polymerized part (Z) in (1r) (2f) (2r)
The first winding bent at the root of the inner regulating bar (22) as a result of being slightly longer than the polymerization allowance (W3) (W4) of (Y) and generating an extra gap (O). The hook (21) can be hooked to one of the rebars (1f) and (2f), and the hook bar (23) can be hooked to the other bar (1r) (2r) without difficulty. )
(1r), (2f), and (2r) can be kept in a temporary holding state from the inside.

The two reinforcing bars (1f) (1r) (2
f) In a state where the third fastener (F3) is temporarily hooked to (2r), when viewed from the front as shown in FIG. 41, the third fastener (F3) intersects with the inner regulating bar (22) by about 90 degrees (κ). The outer regulating bar (24) and the second winding hook (25) at the extension end thereof are still both rebars (1f) (1r).
(2f) In a free state floating outward from (2r).

Then, the outer regulating bar (24) on the second holding plane (S2) is changed from the solid line state in FIG. 41 to the two reinforcing bars (1) as shown by the chain lines in FIGS.
f) Forcibly push down in an obliquely horizontal direction that restricts the entire outside of (1r), (2f), and (2r).

Then, the first and second holding planes (S1) and (S2) which are orthogonal to each other at about 90 degrees (κ) are:
The hook bar (2) for the other reinforcing bar (1r) (2r)
The first and second holding planes (S1) and (S2) of the rebars (1f), (1r), (2f) and (2r) are rotated by themselves with the hooking position of (3) as a fulcrum (P5). The inclined posture crosses the longitudinal center line at a non-perpendicular angle (ι) (μ), and the first winding hook (2) on the first holding plane (S1).
1) precedes and resiliently bites the circumferential surface (joint) of one of the rebars (1f) (2f) from the direction of the arrow (A1) in FIG.

Therefore, the second regulating hook (24) of the extension end portion which bends and deforms around the fulcrum (P5) by forcibly pushing down the outer regulating bar (24) on the second holding plane (S2) and continuing to bend. (25) is hooked on one of the reinforcing bars (1f) and (2f) as shown in FIG.
The operator releases the operation hand, and the second winding hook (25) is resiliently pressed from the direction of the arrow (A2) in FIG. 37 to the circumferential surface (knot) of one of the reinforcing bars (1f) and (2f). The result is a bite.

In this case, the inner regulating bar (22) on the first holding plane (S1) is moved from the inside by about 90 degrees (κ).
The outer restricting bar (24) on the second holding plane (S2) that intersects only the outer reinforcing bar (24) from the outside.
(2f) (2r) is held so as to be sandwiched between the two rebars (1f), (1r), (2f) and (2r) together with the resilient pressure of one springy metal wire. The overlapped portions (Z) and (Y) can be bound in a stable and strong binding state, and there is no fear that the third fastener (F3) may fall off even when subjected to external force such as vibration or impact. , Both rebars (1f) (1r) (2f) (2
r) Reinforced basket by relative swinging movement and vertical movement (C)
There is no risk of unauthorized deformation.

FIGS. 43 to 45 show the second fastener (F
FIG. 4 shows a fourth fastener (F4) that can be used to bind the intersection (X2) between the main bar (1) and the auxiliary ring (flat bar) (3), which is replaced with 2). 43 and 44 from a single steel plate having a band width (E1) or other rigid metal plate material.

That is, in FIGS. 43 to 45, (2)
Reference numeral 6) denotes a holding band hung from the outside to the main muscle (1), and has a U-shape viewed from the flat / bottom view. (27) is a bolt receiving hole formed in the arc surface (26a) of the holding band (26), and (28) is a circular arc surface (26a) of the holding band (26) in a state of communicating with the bolt receiving hole. Fixed nut welded from outside to the outside,
Reference numeral (29) denotes a main-bar holding bolt which is screwed and fastened to the fixing nut (28) so as to be able to move forward and backward.

Reference numeral (30) denotes a pair of left and right locking concave grooves which are cut out on the flat surface (26b) facing the holding band (26) so as to open downward.
The auxiliary ring (3) inscribed therein is locked in a dropped state. In such a case, the notch depth (D) of the locking groove (30) should be as small as the auxiliary ring (3).
The width (B) of the auxiliary ring (3) is preferably set equal to the width (B) of the auxiliary ring (3). .

Using such a fourth fastener (F4), an intersection (X) between the main reinforcement (1) and the auxiliary ring (3) is formed.
In binding work 2), the holding band (2)
6) is inserted into the main bar (1) so as to hold it from outside, and a pair of left and right flat surfaces (26) facing each other.
The locking groove (30) cut out in (b) is dropped into the auxiliary ring (3) from above and locked.

Then, the holding bolt (29) is screwed into the fixing nut (28), and the tip of the holding bolt (29) is moved to the main bar (1).
Of the auxiliary ring (3) against the main reinforcing bar (1).
a) will be tightly integrated in the drawn state. Therefore, even if it receives an external force such as vibration or impact, there is no possibility that the fourth fastener (F4) will fall off.

The use of the first fastener (F1) for binding the intersection (X1) of the main muscle (1) and the hoop muscle (2), and the operation of the second fastener (F2) or the fourth fastener (F4). Work to bind the intersection (X2) of the main bar (1) and the auxiliary ring (flat bar) (3) by use;
By using the third fastener (F3), the operation of binding the hoop streaks (2) parallel overlapping portions (Z) between the members and / or the main bars (1) parallel overlapping portions (Y) between the members is laid on the construction site. (C1) (C2) (C)
3) is performed.

The unit rebar cage (C1) assembled and integrated into a fixed length (L1) and thickness (diameter) by the above-mentioned binding operation.
(C2) and (C3) are then suspended in the air by a crane or other appropriate construction machine (not shown), and set in a vertically upright posture state, and the pile hole (3) excavated in the ground (G).
It will be inserted into 1).

Then, in the process of insertion into the pile hole (31), the preceding unit reinforced cage (C1) (C2)
The main reinforcing bar (1) in the unit rebar cage (C1) (C2) (C3) to be followed thereafter, with the end of the main reinforcing bar (1) in which (C3) is still exposed from the pile hole (31) as an overlapping joint.
The main reinforcing bar (1) is connected to the tip of the main reinforcing bar (1).
From (C2) and (C3), the steel cage (C) having the overall length (L) corresponding to the target cast-in-place concrete pile is finished.

The adjacent unit rebar baskets (C1) and (C2)
In the present invention, the main fastener (1) between the upper and lower parts of (C3) is also provided with the third fastener (F3).
Is used to tie as shown in FIGS. For the binding work method at the construction site,
1) This is the same as that described with reference to FIGS. 4 to 12 except that (C2) and (C3) are performed in a vertically upright posture.

Further, when the above-mentioned reinforced cage (C) is erected and inserted into the pile hole (31), the liner pipe (32) previously buried in the pile hole (31) and the reinforced cage (C) are connected. It is necessary to ensure a constant concrete cover allowance (N) between each other. The concrete cover allowance (N) is set to, for example, about 80 to 150 mm.

As shown in FIGS. 48 to 57, a reinforcing steel spacer (S) for keeping the concrete cover allowance (N) constant is a single steel plate having a constant band width (E2) or other rigid metal. It is provided with a spacer body (33) bent from a plate material in a trapezoidal shape, preferably, in a substantially trapezoidal shape, to be attached to the main bar (1) of the reinforcing bar (C).

Further, a pair of upper and lower inclined legs (33a) (33b) forming a trapezoid of the spacer body (33).
However, in a state where the spacer (S) is attached to the main reinforcing bar (1) of the reinforcing bar (C) as shown in FIGS.
The longitudinal axis of the main bar (1) is maintained at an acute constant intersection angle (ν) (ξ), and the trapezoidal upper bottom surface (33c) is also erected substantially parallel to the vertical line of the main bar (1). , And can act as a ground to the liner pipe (32) of the pile hole (31). In other words, the spacer body (33) is formed in a substantially trapezoidal shape with the main reinforcement (1) of the reinforcing bar cage (C) as the lower bottom surface.

One of the two inclined legs (33a) (33b) forming the spacer body (33) has a cut-off end substantially parallel to the grounding upper bottom surface (33c). The bolt supporting flange (34) is continuously bent outwardly from the inclined leg surface (33a), and thus is also substantially parallel to the longitudinal axis of the main bar (1).

(35) is the bolt supporting flange (3)
4) a bolt receiving hole which is formed substantially at the center,
Reference numeral (36) denotes a fixed nut which communicates with the bolt, and is welded and integrated to the bolt support flange (34) from the outside where the grounding upper bottom surface (33c) exists.

(37) is a grounding upper bottom surface (33c).
The main bolt is screwed and fastened to the fixing nut (36) from the outside where it can move forward and backward, and its tip is pressed against the circumferential surface of the main bar (1). The head of the holding bolt (37) is not limited to the illustrated large hexagonal shape as long as a turning operation tool (not shown) can be locked here.

Similarly, of the two inclined legs (33a) and (33b) forming the spacer body (33), the cut-off end of the other inclined leg (33b) serves as a locking claw (38) to the main bar (1). It has been processed. Its inclined legs (3
The end of 3b) is preferably cut out in a U-shaped, V-shaped or arcuate shape that is widened in a flat / bottom view, so that a locking claw (38) that bites into the circumferential surface of the main bar (1). It is shaped as.

According to this, even if the thickness of the main bar (1) changes, the locking claw (38) of the spacer body (33) can always be stably fitted to the circumferential surface thereof, and swings. This has the effect of maintaining a firm biting engagement state without fear.

Further, (39) is the spacer body (3)
A locking hook made of a steel plate or another rigid metal plate material separate from 3), and is formed in a substantially L-shape or J-shape viewed from a flat / bottom view, and has a base end having the bolt supporting flange. One of the inclined legs (33) bent out of (34)
a) is welded and integrated in an attached state in which it comes into surface contact from the inside.

Further, the locking hook (39) extends from the one inclined leg surface (33a) by a certain working length (L11) in a state of intersecting with the main muscle (1), and has a hook-like shape. The tip is hung and locked on the circumferential surface of the main bar (1).

Here, since the locking hook (39) is integrally extended from one of the inclined legs (33a), the angle at which it intersects with the main bar (1) is determined by the angle of the inclined legs (33a). ) And the main bar (1) at the above-mentioned intersection angle (ν)
Needless to say, this is the same as

In short, in the spacer (S), one inclined leg surface (33) that forms the spacer body (33) is used.
From a), when the locking hook (39) which is integrally extended from the main bar (1) in an extended state crossing the main bar (1) is hung from the inside to the circumferential surface (knot) of the main bar (1) and locked. At the same time, the remaining other inclined leg surface (33b), which also forms the spacer body (33), is bitten from the opposite outer side to the circumferential surface (knot) of the main bar (1) by the locking claw (38) at its cutoff end. It is designed to lock.

The bolt supporting flange is held under the condition that the locking hook (39) and the locking claw (38) which are spaced apart from each other in the vertical position are sandwiched between the main muscles (1) from opposite inside and outside directions. By screwing one holding bolt (37) erected in (34), the tip is pressed and fixed to the circumferential surface (knot) of the main bar (1) from outside. -ing

As a result, in the state where the spacer (S) is attached to the main reinforcing bar (1) of the reinforcing bar (C) as shown in FIGS. 56 and 57, the reinforcing bar (C) is then moved to the pile hole (3) in the ground (G).
In the process of being inserted and inserted into 1), the spacer body (33) is slid into the liner tube (32) of the pile hole (31) and hits, or is continuously driven into the pile hole (31). The spacer body (33) itself is not likely to be displaced or fall off along the main bar (1) even if it is subjected to the compressive force of the concrete. There is no danger of swinging. Thereby, the concrete cover allowance (N) between the main reinforcing bar (1) of the reinforcing bar (C) and the liner pipe (32) of the pile hole (31) is constantly and stably ensured, and the cast-in-place concrete Thus, it is possible to obtain a state in which the reinforcing rod cage (C) is aligned with the pile hole (31).

In this regard, FIGS. 56 and 57 show a state in which the holding bolt (37) and the locking hook (39) are on the upper side, and the locking claw (38) is on the lower side. To the main muscle (1) as an upside down state,
It is of course possible to attach and use a spacer (S), and the above-mentioned effects can be achieved in any case.

In particular, as is evident from FIGS. 56 and 57, the upper and lower positions of the holding bolt (37) and the locking claw (38) that bite and lock the circumferential surface of the main bar (1) from the outside. And a locking hook (39) for hugging and locking from the inner side opposite to the circumferential surface of the main bar (1), and furthermore, a hook-like tip of the locking hook (39) and a holding bolt (39). 37)
Are disposed in a relationship of facing each other at a position very close to each other, so that the holding bolt (37)
Can be easily and correctly screwed toward the longitudinal axis of the main bar (1), and the mounting state of the spacer (S) with respect to the main bar (1) can be more and more stably and firmly maintained.

If the holding bolt (37) is unscrewed, the spacer (S) can of course be removed from the main reinforcing bar (1), and the spacer (S) of the reinforcing bar cage (C) with respect to the main reinforcing bar (1) can be removed. ) Can be freely changed.
It can be adjusted, and it is possible to cope with a change in the thickness of the main bar (1) without any trouble.

[0099]

In summary, the present invention provides a method for assembling a steel cage (C) for cast-in-place concrete piles without welding.
Plural main bars (1) arranged in parallel along the tube core direction
And a plurality of hoop bars (2) circumscribing the main bar (1) in a crossed state and a plurality of auxiliary rings (3) also inscribed in a crossed state with the main bar (1).
In assembling a plurality of (C2) and (C3) as reinforcing bars (C) of the overall length (L) corresponding to the target cast-in-place concrete piles by adding and connecting the adjacent main bars (1) with each other,

In each unit rebar basket (C1) (C2) (C3), the intersection (X) between the main bar (1) and the hoop bar (2)
1) is bound by a first fastener (F1) made of a single springy metal wire, and an intersection (X2) between the main bar (1) and the auxiliary ring (3) is also made of one springy metal wire. While binding by another second fastener (F2)

The unit rebar baskets (C1) (C2) (C3)
In the above-described prior art, the main reinforcements (1) adjacent to each other are joined together by a third fastener (F3), which is also made of a spring metal wire, and the extension (H) of the comrades is joined together. Can solve all the problems associated with welding, and have the effect of improving work efficiency and making assembly quality uniform.

If the method of claim 2 is adopted, the main reinforcing bar (1) of each unit reinforcing bar cage (C1) (C2) (C3).
The assembling work of the hoop bars (2) for the steel bar can be performed more efficiently at the construction site, and the parallel overlapping portions (Z) of the hoop bars (2) are bound together, so that the reinforcing bar cage ( C) has the effect of being able to finish.

Further, if the method of claim 3 is adopted,
Concrete cover cost of cast-in-place concrete pile (N)
The spacers (S) for reinforcing bars for ensuring a constant height can be stably and firmly attached to the main reinforcing bars (1) of the unit reinforcing bar cages (C1) (C2) (C3) without welding. It will improve more and more.

[Brief description of the drawings]

FIG. 1 is an overall schematic front view of a steel cage for cast-in-place concrete piles according to the present invention.

FIG. 2 is an enlarged front view showing a unit rebar basket extracted from FIG. 1;

FIG. 3 is an enlarged perspective view showing a part of FIG. 2;

FIG. 4 is a perspective view of a main reinforcement receiving stand used for the reinforcement arrangement work of the present invention.

FIG. 5 is a front view of FIG. 4;

6 is a perspective view showing an arrangement state of main bars with respect to the main bar receiving stand of FIG. 4;

FIG. 7 is a front view of FIG. 6;

8 is a perspective view showing an inscribed state of the auxiliary ring with respect to the main muscle of FIG. 6;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a front view showing a state where the main reinforcement receiving arch frame is assembled and fixed to the main reinforcement receiving stand of FIG. 9;

11 is a front view showing a circumscribed state of the hoop muscle with respect to the main muscle of FIG.

FIG. 12 is a front view showing an assembled state as a unit rebar basket following FIG. 11;

FIG. 13 is a front view showing a first fastener for binding a crossing portion between a main muscle and a hoop muscle.

FIG. 14 is a perspective view of FIG.

FIG. 15 is a front view showing a binding state between the main muscle and the hoop muscle by using the first fastener.

16 is a sectional view taken along line 16-16 of FIG.

FIG. 17 is a sectional view taken along line 17-17 of FIG. 15;

FIG. 18 is a perspective view showing a binding operation process using the first fastener.

FIG. 19 is a side view of FIG. 18;

20 is a perspective view showing the binding operation process following FIG. 18;

FIG. 21 is a front view of FIG. 20;

FIG. 22 is a perspective view showing a second fastener for binding a crossing portion between a main bar and an auxiliary ring.

FIG. 23 is a front view of FIG. 22;

FIG. 24 is a side view of FIG. 23.

FIG. 25 is a plan view of FIG. 23;

26 is a sectional view taken along line 26-26 of FIG.

FIG. 27 is a perspective view showing a binding state between a main bar and an auxiliary ring by using a second fastener.

FIG. 28 is a front view of FIG. 27;

FIG. 29 is a rear view of FIG. 28.

FIG. 30 is a side view of FIG. 28.

FIG. 31 is an enlarged sectional view taken along line 31-31 of FIG. 28;

FIG. 32 is a side view showing a binding operation process using a second fastener.

FIG. 33 is a front view showing the binding operation process following FIG. 32;

FIG. 34 is a front view showing a third fastener for binding the overlapping portion of the hoop muscles or the main muscles.

FIG. 35 is a perspective view of FIG. 34.

FIG. 36 is a perspective view showing a substantially orthogonal relationship between the first and second holding planes.

FIG. 37 is a front view showing a binding state between hoop muscles or main muscles by using a third fastener.

FIG. 38 is a sectional view taken along line 38-38 of FIG. 37;

FIG. 39 is a left side view of FIG. 37.

FIG. 40 is a right side view of FIG. 37.

FIG. 41 is a perspective view showing a binding operation process using a third fastener.

FIG. 42 is a front view of FIG. 41.

FIG. 43 is a perspective view showing a fourth fastener for binding a crossing portion between a main muscle and an auxiliary ring.

FIG. 44 is a plan view showing a binding state between a main bar and an auxiliary ring by using a fourth fastener.

FIG. 45 is a sectional view taken along line 45-45 of FIG. 44;

FIG. 46 is a front view showing a state in which a reinforcing cage is inserted into a pile hole in the ground.

FIG. 47 is an enlarged sectional view taken along the line 47-47 in FIG. 46;

FIG. 48 is a perspective view of a reinforcing-bar spacer.

FIG. 49 is a front view of FIG. 48.

FIG. 50 is a rear view of FIG. 49.

FIG. 51 is a plan view of FIG. 49.

FIG. 52 is a bottom view of FIG. 49.

FIG. 53 is a side view of FIG. 49.

FIG. 54 is a cross-sectional view of FIG. 50 taken along the line 54-54.

FIG. 55 is a sectional view taken along line 55-55 of FIG. 50;

FIG. 56 is a side sectional view showing a state where a spacer is attached to a main bar.

FIG. 57 is a sectional view taken along line 57-57 of FIG. 56;

[Explanation of symbols]

 (1) ・ Main bar (2) ・ Hoop bar (3) ・ Auxiliary ring (flat bar) (4) ・ Main bar receiving stand (5) ・ Main bar receiving arch frame (6) ・ Concave concave curved surface (7) ・ Main bar receiving claw (8) ・ Arc convex curved surface (9) ・ Main bar receiving claw (10a) (10b) ・ Hook (11) ・ First wrapping arm (12) ・ Wrapping arch (13) ・ Second wrapping arm ( 14) Hook hook (15) First latch arm (16) Holding claw (17) Arch hook (18) Second hook arm (19) Holding claw (20) Hook hook (21) First hook hook (22) Inner regulating bar (23) Lock bar (24) Outer regulating bar (25) Second hook (26) Nipping band (27) Bolt Receiving hole (28), fixing nut ( 29) ・ Holding bolt (30) ・ Recessed groove (31) ・ Pile hole (G) ・ Soil (H) ・ Reinforcement part (S) ・ Reinforcing bar spacer (33) ・ Spacer body (34) ・ Bolt support flange (35) · Bolt receiving hole (36) · Fixing nut (37) · Holding bolt (38) · Locking claw (39) · Locking hook (L) · Overall length of reinforcing bar cage (L1) · Unit reinforcing bar cage Length (N) ・ Concrete cover allowance (X1) ・ Intersection between main bar and hoop bar (X2) ・ Intersection between main bar and auxiliary ring (Y) ・ Overlap between main bars (Z) ・ Hoop bar Overlapping part (F1), first fastener (F2), second fastener (F3), third fastener (F4), fourth fastener

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 22, 2001 (2001.8.2
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0069

[Correction method] Change

[Correction contents]

Then, the outer regulating bar (24) on the second holding plane (S2) is then moved from the solid state shown in FIGS. 41 and 42 to the two reinforcing bars (1f) as shown by the chain line in FIGS. ) (1r), (2f), and (2r) are forcibly pushed down in an obliquely horizontal direction that restricts the entire outside.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0071

[Correction method] Change

[Correction contents]

Accordingly, the outer regulating bar (24) on the second holding plane (S2) is forcibly pushed down to continue to bend and deform around the fulcrum (P5). As shown in FIG. 37, (25) is hooked on one of the rebars (1f) and (2f) from the chain lines in FIGS. 41 and 42, and then the operating hand is released. (25) results in resiliently biting the circumferential surface (joint) of one of the rebars (1f) and (2f) from the arrow direction (A2) in FIG.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0079

[Correction method] Change

[Correction contents]

The unit rebar cage (C1) assembled and integrated into a fixed length (L1) and thickness (diameter) by the above-mentioned binding operation.
(C2) (C3) is then suspended by a crane or other suitable construction machine (not shown), vertically standing electromotive
As the posture state, the pile hole (3) excavated in the ground (G)
It will be inserted into 1).

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0081

[Correction method] Change

[Correction contents]

The adjacent unit rebar baskets (C1) and (C2)
In the present invention, the main fastener (1) between the upper and lower parts of (C3) is also provided with the third fastener (F3).
Is used to tie as shown in FIGS. For the binding work method at the construction site,
1) (C2) (C3), except that is performed under a raised posture state upright, is the same as that explained based on previous figures 34-42.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Explanation of symbols] (1) ・ Main bar (2) ・ Hoop bar (3) ・ Auxiliary ring (flat bar) (4) ・ Main bar receiving stand (5) ・ Main bar receiving arch frame (6) ・ Curved concave surface (7) ) ・ Main bar receiving claw (8) ・ Arc convex curved surface (9) ・ Main bar receiving claw (10a) (10b) ・ Locking hook (11) ・ First wrapping arm (12) ・ Wrapping arch (13) ・ No. 2 Rolling arm (14), Rolling hook (15), First latching arm (16), Clamping claw (17), Rolling arch (18), Second latching arm (19), Clamping claw (20) ) ・ Wrapping hook (21) ・ First wrapping hook (22) ・ Inner regulation bar (23) ・ Lock bar (24) ・ Outer regulation bar (25) ・ Second wrapping hook (26) (27) ・ Bolt receiving hole (28)・ Fixing nut (29) ・ Holding bolt (30) ・ Recessed groove (31) ・ Pile hole (G) ・ Soil (H) ・ Addition part (S) ・ Reinforcing bar spacer (33) ・ Spacer body (34) -Bolt support flange (35)-Bolt receiving hole (36)-Fixing nut (37)-Holding bolt (38)-Locking claw (39)-Locking hook (L)-Overall length of reinforced cage (L1)・ The length of the unit reinforcing cage (N) ・ Concrete cover allowance (X1) ・ The intersection between the main bar and the hoop bar (X2) ・ The intersection between the main bar and the auxiliary ring (Y) ・ The overlap between the main bars (Z)・ Overlapping part of hoop muscles (F1) ・ First fastener (F2) ・ Second fastener (F3) ・ Third fastener (F4) ・ Fourth fastener

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

Claims (3)

[Claims] 1. A plurality of main bars (1) arranged in parallel along the cylinder core direction, a plurality of hoop bars (2) circumscribing the main bars (1) in a crossing state, and also to the main bars (1). A plurality of unit reinforced cages (C1) (C2) (C3) each including a plurality of auxiliary rings (3) inscribed in a crossed state are connected to the adjacent main bars (1) by adding and connecting the same, thereby achieving a desired cast-in-place concrete pile. In assembling as a reinforced cage (C) of the entire length (L) corresponding to the above, at the intersection of the main reinforcement (1) and the hoop reinforcement (2) in each unit reinforced cage (C1) (C2) (C3) X1) is bound by a first fastener (F1) made of one springy metal wire, and an intersection (X2) between the main bar (1) and the auxiliary ring (3) is also made of one springy metal wire. One united by another second fastener (F2) On the other hand, adjacent main reinforcing bars (1) in the unit reinforcing bar cages (C1), (C2) and (C3) are connected to each other by a third fastener (F) which is also formed of one spring metal wire.
(3) A method for assembling a steel cage for a cast-in-place concrete pile without welding, characterized by binding. 2. A pair of locking hooks (10) bent inward from both ends of the cut-off bars (2) of each unit rebar cage (C1) (C2) (C3) as arc-shaped products.
a) The (10b) is locked to the main bar (1) in an overlapping state where the hoop bars (2) and the hoop bars (2) overlap, and the parallel overlapping portion (Z) of the hoop bars (2) is connected to one main bar (1). The method of claim 1, wherein the binding is performed by a third fastener (F3) made of a spring metal wire. 3. A spacer (S) bent from a single metal plate material into a substantially trapezoidal shape is attached to each unit reinforcing cage (C1) (C).
2) The cast-in-place casting method according to claim 1, wherein a concrete cover allowance (N) of the cast-in-place concrete pile is secured to be fixed to the main reinforcing bar (1) of (C3) with a holding bolt (37). Non-weld assembly method of steel cage for concrete piles.