JPH04347263A - Erection of building by use of beam erection bar - Google Patents

Abstract

PURPOSE:To reduce construction period and realize energy conservation on erecting a high RC building, by increasing the allowable errors for the hanging position of beam erection bars against column main reinforcements on assembling the rods in the reinforcements by facilitating the assembling of both members at site after they are separately fabricated. CONSTITUTION:A cap 24 of a guide member 10 is fitted in advance at the upper edge of column main reinforcements 12 to be detachable. Long size guide bars 26 protruding from the upper edge of the cap 24 are inserted in a specified position of beam erection bars 14. Thereafter, the assembling of column main reinforcements 12 and beam erection bars 14 are automatically completed by lowering the steel rods 14.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a building using beam-assembling reinforcing bars, in which the beam-assembling reinforcing bars are suspended and incorporated into the upper ends of previously constructed column reinforcing bars.

0002

[Prior Art] In reinforcing steel work when constructing high-rise RC buildings, after the on-site installation work of column reinforcing bars is completed, beam reinforcing bars (beam assembly reinforcing bars) that have been pre-assembled in a cage shape are attached to the upper ends of the column reinforcing bars. There is a method of assembling.In this case, the beam assembly reinforcing bars are suspended and lowered while the column reinforcing bars are inserted between the beam assembly reinforcing bars.

However, in high-rise RC buildings, it is necessary to increase the number of reinforcing bars in column reinforcing bars and beam assembly reinforcing bars for strength reasons. This makes it extremely difficult to pass the column reinforcing bars between the beam assembly reinforcing bars that are also densely arranged.

[0004] Therefore, as shown in FIG. 8, the main column reinforcement 1 was attached to the tip of the main column reinforcement 1 constituting the column reinforcement, so that the main reinforcement 1 could be easily passed between the beam assembly reinforcement bars (not shown). A guide member 2 is conventionally used.

[0005]

[Problems to be Solved by the Invention] However, such a conventional guide member 2 is simply formed as a conical rigid body, and since this guide member 2 itself cannot be bent, it is difficult to assemble the beam to the main column reinforcement 1. The dimensional tolerance for the rebar hanging position is small. Therefore, even when the guide member 2 is used in this way, the accuracy with respect to the column main reinforcement when suspending the beam assembly reinforcing bars, that is, the horizontal precision when suspending the beam assembly reinforcing bars, must be high. , Difficulties are involved in assembling reinforcing bars for beam assembly.

[0006]Also, there is a method in which column reinforcing bars and beam assembly reinforcing bars are pre-assembled in a factory or on-site, and this integrated product is erected on-site, but in this case, the entire reinforcing bar structure is Not only did the construction become extremely large, making it difficult to transport, but the construction work was also extensive, necessitating a longer construction period and an increase in labor.

In view of such conventional problems, the present invention significantly facilitates the insertion of the beam assembly reinforcing bars into the column main reinforcement in a suspended state, thereby allowing the column reinforcing bars and the beam assembly reinforcing bars to be separated from each other. to make each installation work easier,
The purpose is to provide a construction method for buildings using beam assembly reinforcing bars.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention manufactures column reinforcing bars and beam assembly reinforcing bars separately, and suspends the beam assembly reinforcing bars above the previously installed column reinforcing bars. , while lowering the beam assembly reinforcing bars, a guide rod is inserted between the column reinforcing bars and the beam assembly reinforcing bars at a predetermined position of the beam assembly reinforcing bars, and a guide rod is provided at the lower end of the guide rod and the tip of the column reinforcing bars The present invention is characterized in that a guide member having a cap that is detachably attached to the section is interposed, and the beam assembly reinforcing bars descending through the guide member are guided and incorporated into the column reinforcing bars.

[0009] Also, the guide member is previously attached to the column reinforcing bar via a cap, and the guide rod is inserted into a predetermined position of the beam assembling reinforcing bar by approaching the descending beam assembling reinforcing bar.

0010

[Operation] According to the present invention having the above configuration, before assembling the beam assembly reinforcing bars to the column reinforcing bars, the guide rod of the guide member is inserted into a predetermined position of the beam assembly reinforcing bars, and the cap of this guide rod is removed. Since it is attached to the tip of the column reinforcing bar, the guide rod guides the beam assembly reinforcing bar appropriately as the beam assembly reinforcing bar descends, and the beam assembly reinforcing bar can be moved as a whole. You can easily adjust the position of reinforcing bars. In addition, since the guide rod is long, the amount of bending deformation of the guide rod can be increased when the guide member is interposed between the column reinforcing bars and the beam assembly reinforcing bars, thereby reducing the hanging position tolerance of the beam assembly reinforcing bars. It is possible to easily incorporate column reinforcing bars and beam assembly reinforcing bars that are significantly increased and separated from each other. Furthermore, after the column reinforcing bars and beam assembly reinforcing bars are assembled, the guide member is removed, the outside of the beam assembly reinforcing bars is covered with a formwork, and concrete is poured into it. An integrated beam can be constructed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 6 show an example of a method for constructing a building using the beam assembly reinforcing bars according to the present invention, and FIGS. 1 to 4 each schematically show the step-by-step process of assembling the beam assembly reinforcing bars. 5 are partially cutaway side views of the guide member used in this embodiment, and FIG. 6 is a perspective view showing the state in which the guide member is attached when the beam assembly reinforcing bars are assembled into the column reinforcing bars.

As shown in FIG. 6, the beam assembly reinforcing bars 14 include a plurality of beam main reinforcements 16 arranged horizontally, and the beam main reinforcements 16.
It is constructed by combining a large number of stirrups 18 that circumferentially surround the space defined by the beam main reinforcement 16 from the outside in a cage shape. In addition, the beam assembly reinforcing bars 14 have the stirrups 18 removed from the portions where the main column reinforcing bars 12 constituting the column reinforcing bars pass through, and the space defined by the main column reinforcing bars 12 can be accessed from the outside of the column main reinforcing bars 12 in the circumferential direction. A hoop muscle 20 is attached to surround the frame.

A plurality of column main reinforcements 12 are provided to protrude vertically upward from the upper end of the column 22 in which concrete is cast. When the beam assembly reinforcing bars 14 are assembled into the column main reinforcements 12, the column main reinforcements 12 are inserted into the hoop reinforcements 20 of the beam assembly reinforcing bars 14.

The guide member 10 is used when assembling the beam assembly reinforcing bars 14 into the column main reinforcing bars 12, and is attached to the tip (upper end) of the column main reinforcing bars 12. As shown in FIG. 5, the guide member 10 includes a cap 24 and a long guide rod 26 that integrally projects from the upper end of the cap 24.

The cap 24 has the column main reinforcement 12 at the center of the lower end.
It has a fitting part 28 with a recess for fitting into the guide rod 26, and a tapered part 30 whose outer diameter gradually decreases from the fitting part 28 side to the guide rod 26 side. The overall shape is approximately bell-shaped. The inner diameter of the fitting portion 28 is larger than the outer diameter of the column main reinforcement 12, and as shown in FIG. 6, the fitting portion 28 is removably fitted to the column main reinforcement 12.

Next, the work of assembling the beam assembly reinforcing bars 14 and the main column reinforcing bars 12 using the guide member 10 is shown in FIGS. 1 to 4.
The steps are shown step by step. First, as shown in FIG. 1, the beam assembly reinforcing bars 14 assembled at a factory or on site are suspended by a crane or the like and positioned above the columns 22. At this time, the guide member 10 is attached to the tip of the column main reinforcement 12 protruding from the upper end of the column 22.

Then, the beam assembly reinforcing bar 14 is gradually lowered, and when the beam assembly reinforcing bar 14 comes close to the guide bar 26 of the guide member 10, the tip of the guide bar 26 is appropriately bent and deformed to lower the beam assembly reinforcing bar 14. 14 predetermined positions (hoop muscle 2
(inside 0). After aligning the tips of the guide rods 26 in this manner, the beam assembly reinforcing bars 14 are further lowered, as shown in FIG. In addition, when aligning the tip of the guide rod 26 with the predetermined position of the beam assembly reinforcing bar 14, since the inner diameter of the fitting part 28 of the cap 24 is formed to be larger than the outer diameter of the column main reinforcement 12, the guide rod Since the tip of the guide bar 26 can be rotated around the fitting part 28 with respect to the column main reinforcement 12, positioning can be performed extremely easily together with the bending deformation of the guide bar 26.

As the beam assembly reinforcing bars 14 continue to be lowered, the column main reinforcements 12 are guided by the guide rods 26 and inserted into predetermined positions of the beam assembly reinforcing bars 14, as shown in FIG. As shown in FIG. 4, by removing the guide member 10 from the column main reinforcement 12, the assembly of the beam assembly reinforcing bars 14 and the column main reinforcement 12 is completed. After the assembly is completed in this way, the outside of the beam assembly reinforcing bars 14 is covered with a formwork (not shown), and a floor slab form is assembled above the beam assembly reinforcing bars 14 to provide floor reinforcement. By pouring concrete into these and hardening the concrete, it is possible to construct a beam and a floor that are integrated with the columns 22.

As described above, in the method of constructing a building using the beam assembly reinforcing bars of this embodiment, the guide member 10 is used to assemble the beam assembly reinforcing bars 14 to the column main reinforcement 12, and the guide member 10 A cap 24 is attached in advance to the tip of the column main reinforcement 12, and a long guide rod 26 protruding from the upper end of the cap 24 is connected to the column main reinforcement 12.
2, the beam assembly reinforcing bars 14 are inserted into the predetermined position, so all that is left to do is to lower the beam assembly reinforcing bars 14, and the guide rod 26 guides the beam assembly reinforcing bars 14 appropriately, and the beam assembly reinforcing bars 14
4 can be moved as a whole with respect to the column main reinforcement 12 to automatically adjust the position.

Furthermore, since the guide rod 26 is long, the amount of bending deformation can be increased, and the tolerance for the hanging position of the beam assembly reinforcing bars 14 can be greatly increased, and the guide member 10 can be Insertion into the reinforcing bar 14 can be made significantly easier. After the guide rod 26 is inserted into the beam assembly reinforcing bar 14, the beam assembly reinforcing bar 14 can be simply lowered to complete the assembly with the column main reinforcement 12.

Furthermore, the cap 2 of the guide member 10
4 has a fitting part 28 in which a recess for fitting into the column main reinforcement 12 is bored in the center of the lower end, and the outer diameter thereof increases from the fitting part 28 side to the guide rod 26 side. is formed with a tapered portion 30 whose diameter gradually decreases, and the entire structure is substantially bell-shaped, so that when the beam assembly reinforcing bar 14 descends while being guided by the guide rod 26 and passes through the cap 24, The beam assembly reinforcing bars 14 can be smoothly guided downward along the outer surface of the cap 24. In addition, guide member 1
0 to the column main reinforcement 12, the above-mentioned fitting part 28
It is only necessary to fit the column main reinforcement 12 into the tip of the column main reinforcement 12, and its attachment and detachment are extremely easy.

In addition, by using the guide member 10 to facilitate the assembly of the main column reinforcement 12 and the beam assembly reinforcing bars 14, it is possible to increase the size of the block of the column assembly reinforcement 14 and assemble it into multiple columns 22 at once. It becomes possible to attach. In this embodiment, the length of the beam assembly reinforcing bars 14 is set to three parts of the column 22.

As described above, by using the guide member 10 of this embodiment, it becomes easy to fabricate the beam assembly reinforcing bars 14 and the column main reinforcing bars 12, that is, the column reinforcing bars separately, and then assemble them on site. When constructing a building, it is possible to shorten the construction period and save labor.

Next, another embodiment is shown in FIG.
Components that are the same as those in the embodiment will be described with the same reference numerals and redundant explanations will be omitted. That is, in this second embodiment, the guide rod 26 of the guide member 10 is inserted in advance into a predetermined position of the beam assembly reinforcing bar 14, and then is locked to the mounting plate 32 placed on the upper surface of the beam assembly reinforcing bar 14. On the other hand, the cap 24 provided at the lower end of the guide rod 26 is kept in a state of protruding downward from the lower end of the beam assembly reinforcing bar 14, and when the beam assembly reinforcing bar 14 approaches the column main reinforcement 12, the cap 24
is attached to the column main reinforcement 12. After the cap 24 is attached to the column main reinforcement 12 in this manner, the beam assembly reinforcing bars 14 can be assembled by lowering them as in the first embodiment.

[0025]

[Effects of the Invention] As explained above, according to the construction method of a building using beam assembly reinforcing bars according to the present invention, when incorporating beam assembly reinforcing bars into column reinforcing bars, these column reinforcing bars and beam assembly reinforcing bars are A guide member comprising a guide rod inserted into a predetermined position of the beam assembly reinforcing bars and a cap provided at the lower end of the guide rod and detachably attached to the tip of the column reinforcing bars is interposed between the two. Since the beam assembly reinforcing bars descending through the guide member are guided and incorporated into the column reinforcing bars, as the beam assembly reinforcing bars descend, the guide rods guide the beam assembly reinforcing bars as appropriate, and the beam assembly reinforcing bars are assembled as a whole. It can be moved to easily adjust the position of the beam assembly reinforcing bars relative to the column reinforcing bars. In addition, since the guide rod is long, the amount of bending deformation of the guide rod can be increased when the guide member is interposed between the column reinforcing bars and the beam assembly reinforcing bars, thereby reducing the hanging position tolerance of the beam assembly reinforcing bars. This greatly increases the number of column reinforcing bars and beam assembly reinforcing bars that are separated from each other and can be easily incorporated. In this way, the beam assembly reinforcing bars and the column reinforcing bars can be fabricated separately and then easily assembled on-site, resulting in various advantages such as shortening the construction period and saving labor when constructing high-rise RC buildings. It has a great effect.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing an initial state of work for assembling beam assembly reinforcing bars into column main reinforcements in a construction method according to the present invention.

FIG. 2 is an explanatory diagram schematically showing a state in which a guide bar of a guide member is inserted into a beam assembly reinforcing bar prior to a column main reinforcing bar in the construction method according to the present invention.

FIG. 3 is an explanatory diagram schematically showing a state in which column main reinforcements are inserted into beam assembly reinforcing bars in the construction method according to the present invention.

FIG. 4 is an explanatory diagram schematically showing a state in which the guide member is removed from the column main reinforcement and the installation of beam assembly reinforcing bars is completed in the construction method according to the present invention.

FIG. 5 is a partially cutaway side view of a guide member used in the construction method according to the present invention.

FIG. 6 is a perspective view showing how the guide member used in the construction method according to the present invention is attached.

FIG. 7 is a perspective view corresponding to FIG. 6 showing another embodiment of the present invention.

FIG. 8 is a side view showing a guide member used in a conventional construction method.

[Explanation of symbols]

10 Guide member 12
Column main reinforcement (column reinforcement) 14 Beam assembly reinforcement
16 Beam main reinforcement 22 Column
24 Cap 26 Guide rod

Claims (2)

[Claims] Claim 1: Column reinforcing bars and beam assembly reinforcing bars are manufactured separately, the beam assembly reinforcing bars are suspended above the previously installed column reinforcing bars, and the beam assembly reinforcing bars are lowered, and the column reinforcing bars and the beam assembling reinforcing bars are lowered. A guide member is provided between the assembled reinforcing bars and includes a guide rod that is inserted into a predetermined position of the beam assembled reinforcing bars, and a cap that is provided at the lower end of the guide rod and is detachably attached to the tip of the column reinforcing bars. A method of constructing a building using beam assembly reinforcing bars, which comprises interposing and guiding the beam assembly reinforcing bars descending through the guide member and incorporating them into column reinforcing bars. 2. The guide member is attached in advance to a column reinforcing bar via a cap, and the guide rod is inserted into a predetermined position of the beam assembly reinforcing bar as the beam assembly reinforcing bar approaches the descending beam assembly reinforcing bar. A construction method for a building using beam assembly reinforcing bars described in .