JP3763897B2 - Assembly and installation method of beam reinforcement - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for assembling and installing a beam reinforcing bar in which a beam reinforcing bar is assembled and installed in a beam formwork at a construction site.
[0002]
[Prior art]
Conventionally, when installing beam reinforcement in building construction, etc., the beam rebar is assembled while supporting it above the target beam formwork assembled at a predetermined position at the construction site, and the appropriate number of beam reinforcements assembled. A portal-type beam rebar consisting of struts erected on both sides of the beam formwork, horizontal members erected between these struts, and a suspension mechanism attached to a substantially central portion of the horizontal members A construction method is widely known in which a beam rebar is installed at a predetermined position by lifting it using a descent device or the like and lowering it to a predetermined position in the beam formwork.
[0003]
However, in the conventional installation method related to the beam reinforcement, in addition to the gate-type beam reinforcement lowering device for lowering the assembled beam reinforcement to a predetermined position in the beam form frame, There is a need for a separate support means for supporting each member constituting the beam reinforcing bar such as the bottom bar or the stirrup.
[0004]
[Problems to be solved by the invention]
The present invention was developed in view of the above-described conventional technical circumstances, and the object of the present invention is to provide a simple beam rebar with a reduced number of support means used in the assembly work of the beam rebar. It is in providing an assembly and installation method.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, a transfer bar is supported between the slab molds on both sides of the beam frame, and the lower bar is placed on the transfer bar in a state of being inserted into the stirrup, and the lower end the upper muscle latching member and its upward musculature placed on top while inserted into the stirrup, thereafter, the latch member by the beam reinforcement lifting device provided upright so as to cross the beam formwork First, the upper end bars and stirrups are raised through, the intermediate bars are pulled out on the way, and the lower bars are further supported by the lower side of the stirrup, thereby lifting each member constituting the beam reinforcing bar. In the state, the members are arranged at predetermined positions, the upper and lower bars are bound to the stirrup, and abdominal muscles are installed as necessary to assemble the beam reinforcing bars. It is lowered by the reinforcing bar lifting device Employing the technical means that is placed at a predetermined position in the mold. Furthermore, if a swing lever type chain block is rotatably supported on a horizontal member constituting the beam reinforcing bar lifting device, and the swing lever is rotated in a direction that is easy to operate, the swing operation is performed. Effective for improving workability.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 are schematic explanatory views illustrating the procedure of the work process in the present invention. FIG. 1 shows a state before the start of the assembly of the beam reinforcement. In the figure, 1 is a beam formwork and 2 is a slab formwork. In assembling the beam reinforcing bars, first, as shown in FIG. 2, a plurality of transfer bars 3 are supported with an interval between the ends of the slab molds 2 on both sides of the beam molds 1, and they are passed. The lower end muscle 5, the hooking member 6, and the upper end muscle 7 that are stacked and placed on the stirrup 4 through the stirrup 3 are supported together with the stirrup 4. That is, the lower end reinforcement 5, the retaining member 6, and the upper end reinforcement 7 inserted in the stirrup 4 through the transfer bars 3 supported between the ends of the slab form 2 on both sides of the beam form 1 are placed in order from the bottom. Each member which comprises a beam reinforcement is supported by supporting in the state put.
[0007]
Thereafter, the process proceeds to the step shown in FIG. 3, and the support columns 8 and 9, the horizontal member 10 installed between them, and the chain block attached to the substantially central portion of the horizontal member 10 are used as shown in the figure. A beam rebar lifting / lowering device 12 composed of a hanging mechanism 11 is erected so as to straddle the beam form frame 1, and the lower end portion of the chain 13 is coupled to the hooking member 6 by appropriate connecting means to swing. The members constituting the beam reinforcing bar are lifted by hoisting the chain 13 while swinging the lever 14 up and down. In this case, the upper end muscle 7 and the star wrap 4 are raised through the hooking member 6 at the beginning, and when the lower end muscle 5 approaches the lower side of the star wrap 4, the transfer bar 3 is pulled out and further raised, as shown in FIG. Shift to the process.
[0008]
In the process shown in FIG. 4, the members such as the lower end bars 5, the hooking members 6, the upper end bars 7 and the star wrap 4 are lifted through the hooking members 6 as shown in the drawing, After the members are arranged in a predetermined position, the upper end muscle 7 and the lower end muscle 5 are bound to the stirrup 4, and further, if necessary, the abdominal muscles 15 are bound to a predetermined position using the purse string 16, thereby the beam. Reinforcing bar 17 is assembled and formed.
[0009]
When the assembly of the beam rebar 17 is completed through the above steps, the process proceeds to the step of FIG. 5, and the beam rebar 17 is lowered by the suspension mechanism 11 and installed at a predetermined position in the beam formwork 1 as illustrated. As a result, the assembly of the beam reinforcement and the installation work at the predetermined position are completed. In the figure, reference numeral 18 denotes a spacer, which may be previously attached to the lower portion of the stirrup 4 in the process of FIG.
[0010]
In the above embodiment, the suspension mechanism 11 is a swing lever type, that is, the swing lever 14 is swung up and down at the free end thereof, and the beam is being assembled through the chain 13 or after assembly. Although a chain block that raises and lowers the reinforcing bar is adopted, if this chain block is rotatably supported with respect to the horizontal member 10, a direction in which the swing lever 14 can be easily operated as necessary in the assembly and installation work described above. Since the rocking lever 14 can be swung up and down on the spot without riding out, the usability is extremely good. In addition, a base body made of L-shaped steel or the like is attached to the lower portion of the support columns 8 and 9 so that the inclination in the direction perpendicular to the paper surface is suppressed in the drawing so that the beam reinforcing bar lifting device 12 can stand on its own. ing. Further, connecting pipes 19 and 20 are provided at both ends of the horizontal member 10 and are configured to be fitted on the support columns 8 and 9 so that the height can be adjusted.
[0011]
【The invention's effect】
According to the present invention, by utilizing the internal space of the beam-type frame, on which supporting the members constituting the beam reinforcement in its internal space with the passing muscle and latch member, each of those members said The beam rebar lifting device is lifted through the latching member to complete the assembly of the beam rebar, and then the assembled beam rebar is lowered by the beam rebar lifting device and installed at a predetermined position in the beam formwork. Since the method is adopted, in addition to the beam rebar lifting and lowering device, another conventionally required support means can be omitted, and the number of use of the support means required for the assembly work of the beam rebar is reduced. It is possible to provide a method for assembling and installing a simple beam rebar. Furthermore, if a swing lever type chain block is adopted as a beam rebar suspension mechanism and is configured to be rotatably supported with respect to the horizontal member, the swing lever can be rotated in an easy-to-operate direction. The beam rebar can be lifted during or after assembly by simply swinging up and down, which is effective in improving workability.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view illustrating the procedure of a work process in the present invention.
FIG. 2 is a schematic explanatory view illustrating the procedure of the work process.
FIG. 3 is a schematic explanatory view illustrating the procedure of the work process.
FIG. 4 is a schematic explanatory view illustrating the procedure of the work process.
FIG. 5 is a schematic explanatory view illustrating the procedure of the work process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Beam formwork, 2 ... Slab formwork, 3 ... Transfer bar, 4 ... Stirrup, 5 ... Lower end bar, 6 ... Stopping member, 7 ... Upper end bar, 8, 9 ... Post, 10 ... Horizontal member, DESCRIPTION OF SYMBOLS 11 ... Suspension mechanism, 12 ... Beam rebar raising / lowering device, 13 ... Chain, 14 ... Swing lever, 15 ... Abdominal muscle, 16 ... Deck reinforcement, 17 ... Beam reinforcement, 18 ... Spacer, 19, 20 ... Connecting pipe

Claims (2)

The pass muscles supported between beam formwork sides of the slab formwork of the upper end of the lower muscle on its pass muscle with placing in a state of being inserted into the stirrup, and in its upper latch member on the lower end muscle The stirrup is inserted into the stirrup and stacked , and then the upper rebar and stirrup are first lifted through the retaining member by the beam rebar lifting device that is erected so as to straddle the beam formwork. In the state where each member constituting the beam reinforcing bar is lifted by removing the connecting bar in the middle and further raising and supporting the lower end bar at the lower side of the stirrup, these members are arranged at predetermined positions. The upper and lower bars are bound to a stirrup, and if necessary, an abdominal muscle or the like is installed to assemble a beam reinforcing bar, and then the beam reinforcing bar is lowered by the beam reinforcing bar lifting device. It must be installed at a predetermined position inside Assembly installation method of the beam rebar to be.   A rocking lever type chain block is rotatably supported on a horizontal member constituting the beam reinforcing bar lifting device, and the rocking lever is rotated in an easy-to-operate direction for rocking operation. The method for assembling and installing a beam reinforcing bar according to claim 1.

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