JPH01244075A - Beam, column reinforcing bar assembly method and assembly device/jig - Google Patents

Abstract

PURPOSE:To improve accuracy and quality and to save energy in a field work by forming a work floor having about the same height as that of the earth, inserting vertical column reinforcing bars into pits, assembling columns, beam unit reinforcing bars to place at a construction site. CONSTITUTION:A plurality of horizontal beam reinforcing bars (S) are supported by a beam stand 2 on a work floor (F) having about the same height as that of the earth (E), and one end section thereof is supported by an end stand 1. After that, a plurality of vertical column reinforcing bars (T) are inserted into two pits for column reinforcing bars insertion, they are supported by a column stand 2, and the beam reinforcing bars (S) and column reinforcing bars (T) are assembled so as to cross in right angles. Two column reinforcing bar insertion pits formed on the work floor (F) as a device used for an assembly method and a column reinforcing bar supporting column stand 2 formed in the part thereof and projected upward from the work floor (F) are provided. The beam reinforcing supporting beam stand 3 and end stand 1 supporting a lengthwise end section are provided, and a horizontal ornamental hairpin bar 26b at right angles to each of stands 2 and 2' lengthwise is so placed that it is capable of loading and unloading, and forms a preassembly device.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a construction method and apparatus for assembling beam reinforcements and column reinforcements in a square shape on the ground when constructing a reinforced concrete building.

(Prior art) In order to improve the efficiency and accuracy of reinforcing bar assembly work, a pre-assembly method has recently been adopted in which, for example, column bars and beam bars are assembled above ground as unit bars, and the unit bars are moved to the installation site using a crane or the like. It is widely adopted.

However, when horizontal beam reinforcements and vertical column reinforcements are assembled in advance, the column reinforcements are assembled into a box-shaped unit reinforcement as if they were legs, making it difficult to set up a high work stage for workers to sit on at the assembly site. must be installed and the reinforcing material must be lifted to a high position. That is, the work of assembling the reinforcing bars is time-consuming and requires a high work stage, which is not satisfactory in terms of work efficiency and costs.

(Objective of the Invention) The object of the present invention is to enable workers to easily assemble dogleg-shaped beams and column unit reinforcements on the ground without the need for a high work stage, thereby improving accuracy and quality. It also aims to save labor in on-site work.

(Technical Means for Achieving the Object) In order to achieve the above object, the present invention supports a plurality of horizontal beam reinforcements on a work floor that is substantially flush with the ground using a beam mount, and One end is supported by an end frame, multiple vertical column reinforcements are inserted into two pits for inserting column reinforcements, these are supported by the column mount, and the beam reinforcements and column reinforcements are I am trying to assemble the molded beams and column units into reinforcements.

The equipment used in the above-mentioned pre-assembled construction method includes a work floor that is approximately at the same height as the ground, two pits for inserting column reinforcements formed on the work floor, and a pit that is formed in the pit portion and protrudes above the work floor. It is equipped with a column mount for supporting column reinforcements, a beam mount for supporting beam reinforcements formed on the work floor, and an end mount for supporting one end in the length direction of the work floor. To provide a device for assembling a cross-shaped beam and column unit on which a horizontal hairpin bar substantially orthogonal to the direction is removably mounted.

In addition, in order to improve the assembly accuracy of the column reinforcements, a column base guide frame is fixed to the bottom of the column mount, and the frame is equipped with upwardly protruding positioning pins that correspond to the arrangement of the column reinforcements. Provided is a column base ruler jig for assembling beams and column unit reinforcements, in which a cylindrical joint is fitted onto the pin in an upwardly protruding manner, and the lower end of the column reinforcement can be freely inserted into the inner periphery of the upper half of the joint. do.

Furthermore, in order to improve the assembly accuracy of the beam reinforcements, positioning holes corresponding to the arrangement of the plurality of beam reinforcements are temporarily formed in the frame, and each positioning hole portion of the frame plate is provided with a boss having approximately the same inner diameter as the positioning hole. To provide a beam end positioning ruler jig for assembling the reinforcement of a beam or column unit, characterized in that the parts are fixed.

(Example) First, the structure of the pre-assembly device and the structures of each jig etc. will be explained.
In FIG. 1 showing an overall side view of the pre-assembly device, a flat work floor F is formed of concrete, for example, approximately on the same plane as the ground E, and the work floor F has a depth of, for example, 60 cm.
A pit P of about m size is formed at two locations in the front and back at intervals in the front and rear direction.

An end mount 1 is fixed to the front end of the work floor F, and front and rear column mounts 2.2' that protrude above the work floor F are respectively fixed in the front and rear bits P. 2′
A front beam mount 3 is fixed to the work floor F in between, and a rear beam mount 3' is fixed to the work floor F behind the rear column mount 2'.

In the end frame 1, a vertical steel plate 6 is welded to the rear surface of a plurality of vertical end columns 5, and a pair of left and right hairpins extending rearward is provided at both left and right ends of the columns 5, as shown in FIG. The bar receiver 10 is welded together with the auxiliary leg portion 11 extending forward and downward. In FIG. 3 showing the rear view of the end frame 1, a horizontal hairpin bar 15 is placed on the left and right hairpin bar holders 10, and as shown in FIG. 1
The hairpin bar 15 can be locked in a predetermined position by inserting an inverted-shaped knock pin 16 that can be freely inserted into and removed from the 0 hole from above.

A plurality of reinforcing bar guide plates 17 are welded to the upper end surface of the hairpin bar 15 at predetermined intervals, and the front ends of the upper beam reinforcements (so-called upper reinforcements) S are kept at a predetermined height and at a predetermined interval between the guide plates. It is possible to hold it. Further, as shown in FIG. 5, a beam support 18 made of angle material is fixed to the lower half of the plate 6 via a bracket 19 made of angle material, and the beam support 18 is fixed at a predetermined interval to the beam support 18. Multiple semicircular notches 2
0 is formed, and the lower beam reinforcement (
The so-called lower reinforcement) S can be held at a predetermined height and at a predetermined interval.

The pillar mount 2 shown in Fig. 2 is integrally equipped with four vertical square vibe supports 23 arranged in a square shape when viewed from above, and a pair of right and left hairpin bar holders 24 extending in the front and back direction, and the hairpin bar on the left side. The receiver 24 is welded to the front and rear columns 23 on the left side, and the hairpin bar receiver 24 on the right side is welded to the front and rear columns 23 on the right side.
It is welded to 3. Hairpin bar holder 24 has 1 front and back
A pair of hairpin bars 26a, 26b is mounted.

As shown in FIG. 1, the rear hairpin bar 26b is placed horizontally directly on the hairpin bar holder 24 and is held at the same height as the hairpin bar 15 of the end frame 1, while the front hairpin bar 26a is placed on the hairpin bar 24 with a spacer. It is held horizontally above the hairpin bar holder 24 via a pin 28 at a constant distance. That is, the front hairpin bar 26a is held so as to be located above the upper beam (superior reinforcement) S.

Further, below the hairpin bar receivers 24, stirrup hairpin bar receivers 30 are welded to the pillars 23, and stirrup hairpin bar receivers 31 are attached to the left and right pairs of hairpin bar receivers 30 on the front and rear sides, respectively. are listed respectively.

FIG. 6 shows a rear view of the column mount 2, and a plurality of guide plates 35 for guiding the column reinforcements T to predetermined positions are welded to the rear surface of the front hairpin bar 26a, as shown in FIG. , and guide plates 35 to guide and support the vertical columnar reinforcements T at predetermined intervals.

Further, as shown in FIG. 8, both left and right ends of the hairpin bar 26a are positioned on the spacer 28 of the hairpin bar holder 24 by removable knock pins 33, in the same manner as in the locking method of the end frame 1 described above. Although not shown, the sixth
Similarly, a positioning guide plate as shown in FIG. 7 is welded to the front surface of the hairpin bar 26b on the rear side of the figure, and is positioned on the hairpin bar receiver 24 with a knock pin.

The beam mount 3 in FIG. 2 includes four vertical angle supports 36 arranged in a rectangular shape when viewed from above, and a pair of right and left hairpin bar receivers 37 extending in the front-rear direction. It is welded to the front and rear columns 36 on the left side, and the hairpin bar receiver 37 on the right side is welded to the front and rear columns 36 on the right side.

A hairpin bar 38 extending in the left-right direction is placed horizontally on the hairpin bar receiver 37 as shown in FIG. 9, and is held at the same height as the hairpin bar 15 of the end frame 1 shown in FIG. As shown in Figure 10, the hairpin bar 3 for the beam mount
8 is also positioned on the hairpin bar receiver 37 by means of a knock pin 39.

The column mount 2' and beam mount 3' on the rear side in FIG. 1 have the same structure as the column mount 2 and beam mount 3 on the front side described above.

A column base ruler jig 40 for positioning the lower end of the column reinforcement T and connecting the joint is fixed to the bottom surface of the pit P in each column frame 2.2'.

As shown in FIG. 12, the column base ruler jig 40 has a large number of upwardly protruding pins 42 formed on the upper surface of a rectangular frame 41 made of angle material. The pins 42 are arranged in the same manner as the column reinforcements T. Note that the ruler jig shown in Fig. 12 is provided with a sub-frame 41' at a location corresponding to the width of L2 so that it can be applied to columns with two types of widths Ll and L2.
A pin 42 is also provided above 1'.

In FIG. 11 showing a side view of the column base ruler jig 40, the heights of the pins 42 are aligned with each other on the same plane, and a cylindrical joint 44 is removably fitted therein. The lower half of the joint 44 fits into the pin 42 in a freely sliding and removable manner, and the upper half fits into the lower end of the column T.

FIG. 13 shows a front view of a positioning ruler jig 50 for positioning the rear end of the beam S. In FIG. 13, the positioning ruler jig 50 has a rectangular frame 51 made of angle material. A plurality of beam insertion holes 53 are formed on the upper and lower sides of the frame. As shown in FIG. 14, the inner diameter of the extraction hole 53 is large enough for the deformed beam S having the spiral ribs R to pass through smoothly. A boss portion 55 having a constant length in the front-rear direction and a hole having the same diameter as the hole 53 is welded to the front surface of the frame body 51. The length of the boss portion 55 in the longitudinal direction is at least as long as the rib R of the deformed beam reinforcement S.
The length is longer than one pitch.

Using such pre-assembly equipment and jigs, the square-shaped pillar-beam unit reinforcement is assembled in the following manner.

(Pre-assembly method) (1) In Figs. 15 and 16, several supports 32 are hung on top of the stirrup bar 31 of the front column mount 2, and a spiral beam bar is placed on top of it. Temporarily place the stirrup Q for use. In this case, in order to prevent the stirrup Q from falling down, it is temporarily supported by, for example, the front hairpin bar 26a, and in this figure, two bundles are placed on the front side of the front hairpin bar 26a.
Distribute four bundles and the required stirrup Q to the rear side.

(2) In FIG. 17, insert the lower beam reinforcement (lower reinforcement) S into the stirrup Q, and place it on the lower end of the stirrup Q as shown in FIG.

(3) Next, place the hairpin bars 15.26b and 38 on each of the stands 1.2.2' and 3.3' shown in FIG. 1, respectively. However, the hairpin bar 26a on the front side of the pillar frame 2' is not placed on it. Then, as shown in Fig. 19, insert the upper beam reinforcement (superior reinforcement) S into the stirrup Q, and
Then, as shown in FIG. 20, the lower beam S is suspended from the upper beam S by the S rod 57.

Further, the front edge of the beam S is brought into contact with the contact plate 6 of the end frame 1 shown in FIG. Then, place the hairpin bar 26a on the front side of the rear column mount 2'.

(4) Insert the remaining bundle of stirrups Q from the rear end as shown in FIG. 21, and place them together with the stirrups Q temporarily placed on the front column mount 2 as shown in FIG. 22.

(5) In FIG. 23, remove the S rod 57, place the upper and lower beam reinforcements S at predetermined positions, and bind them to the stirrup Q by welding. At this time, the front edge of the beam S is in contact with the abutment plate 6 of the end frame 1 shown in FIG. 3, and is also fitted into the notch 20 and between the guide plates 17 shown in FIGS. It is positioned in a predetermined position.・ (6) In Fig. 24, the lower top muscle and the middle suspension muscle S
Insert a into the stirrup Q from the front and back. The length of the suspension reinforcement Sa and the like is approximately half as short as that of the beam reinforcement S. Also, from the front, it is inserted using the window hole 12 of the end frame 1 shown in FIG.

(7) In Fig. 25, the middle suspension bar Sa etc.
0 to hang it in place. This hanging rod 60 is embedded in the main body (concrete).

(8) When the beam reinforcements S are tied together as shown in Figure 26, a flat bar (band plate) for beam joining is wrapped around the beam reinforcements S at both ends of the beam reinforcements S as shown in Figure 27. Weld 58.

In this case, in order to accurately position and fix the end of the beam S, a positioning ruler jig 50 is inserted into the end of the beam S. That is, with the positioning ruler jig 50 inserted, the flat bar 58
are welded, and after welding, the positioning ruler jig 50 is removed.

At this time, since the thick boss portion 55 is formed on the positioning ruler 50, even a deformed beam S having a spiral rib on the outer periphery can be smoothly pulled out without the rib getting caught.

(9) In Fig. 28, the column hoop muscles Ta are connected to each column frame 2.
Place the column base XI, panel zone X2, and column head hoop at X3 (2').

(10) In Fig. 29, insert the columnar muscle T from above,
The front columnar reinforcement T and the rear columnar reinforcement T are guided at predetermined positions and at predetermined intervals by the guide plate 35 of the hairpin bar 26a (26b) as shown in FIG. Furthermore, as shown in FIG.
Fit and position. The upper end of the joint 44 is welded to the columnar reinforcement T. (11) In FIG. 30, hoop muscles Ta are allocated and tied to columnar muscles T.

(12) Although not shown, there is a 27th column reinforcement at the bottom end of the beam.
Weld a strip-shaped flat bar as shown in the figure, and weld flat bars to the column base and capital of the column reinforcement.

In this way, the cross-shaped beams and column unit reinforcements as shown by the imaginary lines in FIG. 1 are assembled and moved as one piece to the installation location at the construction site using a crane or the like.

Then, use the same equipment to assemble the next unit. After assembling a predetermined number of cross-shaped beams and column unit reinforcements, each frame 1, 2, 2', 3, 3' is removed and reused at the next construction site.

(Effects of the Invention) As explained above, according to the pre-assembly method and the pre-assembly device of the first and second inventions of the present application: (1) The work floor P is formed at approximately the same height as the ground, and is located within the pit P. By inserting column reinforcement T perpendicular to the column, we are assembling a cross-shaped column/beam unit reinforcement, so we can construct a high work stage and work on it like in the past, or work on the material. No need to carry it up.

That is, the worker can work on the work floor P that is at the same height as the ground, making it easier to work, improving work efficiency, and saving labor by not having to lift the material high.

(2) Work at the construction site becomes easier because it is assembled into square-shaped unit bars on the ground, installed as one piece on the construction site, and then hardened with concrete.

In other words, there is no need to assemble reinforcing bars at the construction site.
Assembling accuracy and quality are improved, and work at construction sites becomes easier.

Further, the column base ruler jig 40 of the third invention includes upwardly protruding positioning bins 42 corresponding to the arrangement of vertical column bars, and a cylindrical joint 44 is fitted into each positioning bin 42 in an upwardly protruding manner. Since the lower end of the column reinforcement T can be freely inserted into the inner periphery of the upper half of the joint 44, the column reinforcement T can be easily and accurately positioned during assembly, and the necessary joints can be connected at the same time during erection. can.

In the beam end positioning ruler jig 50 of the fourth invention, a thick boss portion 55 having approximately the same inner diameter as the positioning hole 53 is fixed to each positioning hole 53 portion, so even if the beam reinforcement S is on the outer periphery. Even if it is a deformed rebar with spiral ribs,
High assembly accuracy can be ensured, and the ribs can be pulled out smoothly after use without getting caught.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the pre-assembly device to which the present invention is applied, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a rear view of the end mount.
Figure 4 is a rear view of the hairpin bar for the end mount, Figure 5 is an enlarged rear view of the beam support of the end mount, Figure 6 is a rear view of the column mount, and Figure 7 is a top view of the hairpin bar for the pillar mount. , 8th
The figure is a view from the ■ arrow direction (rear view) in Figure 7, Figure 9 is a rear view of the beam mount, Figure 10 is a rear view of the hairpin bar for the beam mount, and
Figure 1 is a side view of the column base ruler jig, Figure 12 is a plan view of Figure 11, Figure 13 is a front view of the beam end positioning ruler jig, and Figure 14 is a view taken from the XIV arrow in Figure 13. , 15, 17, and 19 are vertical side views of the column frame when the stirrup for the beam reinforcement is temporarily placed, the lower reinforcement of the beam reinforcement is inserted, and the upper reinforcement is inserted (
Figures 16, 18 and 20 <7) XV-
16, 18 and 20 are rear views of the column mount corresponding to the states of FIGS. 21st
Figures 22 and 22 are side views of the device showing the state when inserting the remaining stirrups and allocating the stirrups, Figure 24 is a side view of the device when inserting suspension bars, etc., and Figure 25 is a side view of the device when inserting suspension bars, etc. Figure 26 is a side view of the device after beam assembly is completed, Figure 27 is an enlarged side view of the beam end when finished, and Figure 28 is a column hoop reinforcement. Figure 29 is a rear view of the column mount when it is temporarily placed, and Figure 29 is a rear view of the column mount when the column reinforcement is inserted.
It is a rear view of the column mount after the 30th column reinforcement assembly is completed. 1...
・End frame, 2.2'... Column frame, 3.3' Beam frame, 15.26 a, 26 b, 38-=Kanzashi bar, 40... Column base ruler jig, 50... Beam End positioning jig Patent applicant: Ohsue Construction Co., Ltd. Figure 6 Figure 25 Procedural amendment (method) % formula % 2. Name of the invention Beam, column unit reinforcement construction method and ancestor device/jigs 3. Relationship with the case of the person making the amendment Patent applicant Address: 2-4-10 Shimanouchi, Minami-ku, Osaka Name: Osue Construction Co., Ltd. Representative Director and President: Kazuya Saeki 4, Agent address: Higashitenma, Kita-ku, Osaka 2-9-4 Chiyoda Building East Building 7th Floor (・530) 5. Date of amendment order (shipment date) February 23, 1988 6. Subject of amendment Statement 7. Contents of amendment To the person (1) Details 7! Add the item "3. Detailed description of the invention" between lines 11 and 12 on page 42. The above procedure amendment layer (method) 1. Indication of the case 1988 Patent Application No. 297215 2. Name of the invention Beam, Sha unit reinforcement assembly method and assembly device/jigs 3. Related Patent Applicant Address: 2-4-10 Shimanouchi, Minami-ku, Osaka Name: Osue Construction Co., Ltd. Representative Director and President: Kazuya Saeki 4 Agent address: Chiyoda, 2-9-4 Higashitenma, Kita-ku, Osaka Building East Building 711i ([Phase] 530) 5. Date of amendment order
Date of dispatch) April 2586, 1999, Subject of amendment Specification 7, Contents of amendment (1) On page 18 of the specification, on the 3rd line, after ``Side view,'' at the right end, ``Figure 23 shows the beam reinforcement in the specified position.'' Add "Rear view of the beam frame when tying." (2) Add "Figure wa" after "No. 30" on the right end of page 18, line 9. that's all

Claims (4)

[Claims] (1) Multiple horizontal beam bars are supported on a work floor that is approximately flush with the ground using a beam frame, one end of the beam bars is supported by an end frame, and two pits are placed for inserting column bars. A unit reinforcement construction method characterized by inserting a plurality of vertical column reinforcements into a column, supporting these with a column frame, and assembling the beam reinforcements and column reinforcements into a square-shaped beam and a column unit reinforcement. . (2) A work floor that is approximately at the same height as the ground, two pits for inserting column reinforcements formed on the work floor, and a column mount for supporting column reinforcements that is formed in the pit and protrudes above the work floor. , a beam frame for supporting the beam reinforcement formed on the work floor, and an end frame for supporting one end in the length direction of the work floor, and each of the above-mentioned frames has a horizontal hairpin substantially orthogonal to the length direction of the work floor. A device for assembling the reinforcement of a square-shaped beam or column unit, characterized by a removable bar. (3) A column leg guide frame is fixed to the bottom of the column mount, and the frame is equipped with upwardly protruding positioning pins corresponding to the arrangement of the column reinforcements, and each positioning pin has an upwardly protruding cylindrical joint. A column base ruler jig for a beam or column unit reinforcement assembly, characterized in that the lower end of the column reinforcement can be freely inserted into the inner periphery of the upper half of the joint. (4) Positioning holes corresponding to the arrangement of the plurality of beam reinforcements are formed in the frame plate, and a boss portion having approximately the same inner diameter as the positioning hole is fixed to each positioning hole portion of the frame plate. Beam end positioning ruler jig for beam and column unit reinforcement assembly.