JPS625460Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a prefabricated reinforcing bar assembly structure for the purpose of shear reinforcement of the portion where hoop reinforcement is not wound during the erection of prefabricated reinforcing bars.

The present invention is a frame structure consisting of columns and beams that is assembled and erected using a reinforcing steel member (hereinafter referred to as a prefabricated reinforcing bar) in which hoop reinforcement is wrapped in advance around the main axis reinforcing bar of the column or beam. (hereinafter referred to as construction joints), or as a construction material in place of hoop reinforcements in relatively short spans, or as construction material used in combination with hoop reinforcements.

Conventionally, reinforcement of construction joints is done by manually wrapping hoop reinforcements on site, but this has led to efforts to rationalize construction methods and save labor in terms of work efficiency, uniformity of quality, and reliability. Furthermore, it is said that it is most desirable that the hoop reinforcement be arranged in a manner that restrains the four corner main axis reinforcing bars, but it has been insufficient in this respect as well. Furthermore, for prefabricated reinforcing bars for beams in shorter spans, excluding the erection joints on both sides,
The amount of mechanically wrapped hoop reinforcement was relatively small (inevitably, the proportion of manual work increased), creating a problem with construction efficiency.

However, in the present invention, a U-shaped assembly metal fitting or a U-shaped reinforcing bar mat is attached to the outside of the main shaft reinforcing material as a shear reinforcing material, and the opposing parts are fastened and connected by a connecting rod, thereby minimizing manual work. This not only streamlines construction and saves labor, but also ensures the reinforcement of construction joints and increases their reliability.For relatively short spans, it can be used in place of mechanically wrapped hoop reinforcements, and can be used as needed. By using it in combination with hoop muscles according to the situation, all of the above-mentioned conventional problems have been improved.

Next, embodiments of the present invention will be described.

Main shaft reinforcing bars 1, 1a, 1 of prefabricated reinforced beam member A
Mount the U-shaped iron plates 2, 2a facing each other on the outer side of the joint ends of the U-shaped iron plates 2, 2a, and coupler reinforcing bars 3, 3a and high tension bolts 4,
4a, and by connecting the ends of each of the steel plates 2, 2a with steel bolts 5, 5a and nuts 6, 6a, the steel plates 2, 2a are firmly attached to the main shaft reinforcing bars 1, 1a, 1b, 1c. , and are integrally attached. Further, one end of the connecting bolts 8, 8a is fixed to the connecting hardware 7, 7a fixed to the prefabricated reinforcing bar column member B with nuts 9, 9a, and the other end of the bolt 8, 8a and the main axis reinforcing bar 1 of the prefabricated reinforcing bar beam member A, 1
a, 1b, and 1c are connected by couplers 10 and 10a. A U-shaped iron plate 11 for shear reinforcement is also mounted on the joining side of the connecting bolts 8, 8a facing each other, and this is attached to the reinforcing bar with coupler and the high tension bolts 4, 4.
a and steel bolts 5, 5a and nuts 6, 6a.

In the above, the U-shaped iron plates 2 and 2a are shear reinforcing materials, and the reinforcing bars with couplers and steel bolts are connecting steel materials, but the fixing structure of the connecting steel materials and the shear reinforcing materials is a nut or high tension material as in the above embodiment. Connection using bolts and couplers is the simplest and easiest. As shown in FIG. 3, the coupler-equipped reinforcing bars include those in which a large-diameter coupler 13 is welded or forged to the end of the reinforcing bar 12, and a high-tension bolt 4 is screwed into the screw hole 13a, or a fifth As shown in the figure, there is one in which a screw hole 14a is provided at one end of a reinforcing bar 14, this portion is heat treated, and a high tension bolt 4 is screwed into the screw hole 14a. In addition to the above, a high tension bolt 16 is connected to one end of the reinforcing bar 15, and a nut 17 is connected to this.
There is one that is screwed together.

Next, in the reinforcing bar mat 20 of this invention, the small diameter reinforcing bars 18, 19 are arranged vertically and horizontally, and their intersection points are welded to form a mat, and some of the reinforcing bars 21, 21a are
are fixed by welding, and a high tension bolt can be inserted through the through holes 22, 22a (Fig. 6). In addition, FIG. 7 shows that the reinforcing bar mat 20 and the U-shaped iron plates 23, 23a are attached, and the coupler reinforcing bars 3, 3a and the high tension bolt 4,
4a and a connection bolt 8 is shown. Further, FIG. 8 shows an example in which the present invention is applied to a prefabricated reinforcing beam member with a short span. That is, instead of hoop reinforcements, U-shaped iron plates 25, 25a and reinforcing bar mats 20 are attached to the main shaft reinforcing bars 24, 24a of a prefabricated reinforced beam member, and high tension bolts 4, 4a and connecting bolts are attached as in FIG. 8, it was tightened.

That is, according to the present invention, the shear reinforcing material is attached to the outside of the main shaft reinforcing bar, and the opposing parts of the shear reinforcing material are connected by the connecting steel material, so that the construction joint can be easily reinforced, and Good workability,
This has a significant effect on labor saving.

That is, since the shear reinforcing material is U-shaped, even after the main shaft reinforcing bars are joined, the shear reinforcing material is fixed to the main shaft reinforcing bars by attaching it from the outside and then tightening it with the connecting rod. Further, since the opposing shear reinforcing members are connected by a connecting rod such as a bolt, no welding is necessary.

In addition, the shear reinforcing materials were made into a U-shape and were fitted from the outside of the main shaft reinforcing bars, facing each other, and the opposing shear reinforcing materials were connected by vertical and horizontal connecting rods, so that the U-shaped shear reinforcing materials were attached to the connecting rods. As a result, the ends are connected and become like an annular reinforcing member, thereby significantly reinforcing the strength of the part.

In addition, if the present invention is applied to short-span prefabricated reinforcing beam members, it is possible to expect strength greater than that achieved by installing hoop reinforcements without installing hoop reinforcements, and the construction is simple and easy. This has the effect of maintaining homogeneous strength.

[Brief explanation of the drawing]

Figure 1 is a front view of an embodiment of the present invention, Figure 2 is a vertical side view, Figures 3 to 5 are cross-sectional views showing examples of fixation between reinforcing bars and shear reinforcement, and Figure 3 is a coupler. Figure 4 is a partial sectional view of reinforcing bars, Figure 4 is a diagram showing bolts connected to reinforcing bars, Figure 5 is a partial sectional view of reinforcing bars with screw holes, Figure 6 is an enlarged perspective view of reinforcing bar mats, and Figure 7 is a diagram showing bolts connected to reinforcing bars. FIG. 8, which is a sectional view of a reinforcing bar mat in use, is a diagram in which the present invention is applied to a prefabricated reinforcing beam member with a short span. 1, 1a, 1b, 1c...main shaft reinforcing bar, 2, 2a
...Iron plate, 3,3a...Coupler reinforcing bar, 4,4a
...High tension bolt, 5,5a...Steel bolt, 7,7a...Connection hardware, 8,8a...Connection bolt, 9,9a...Nut, 10,10a...Coupler, 11...C-shaped iron plate , 12, 14, 15...
...Reinforcing bar, 13...Coupler, 16...High tension bolt, 17...Natsuto.

Claims (1)

[Claims for Utility Model Registration] 1. Shear reinforcing members made of a U-shaped assembly hardware and a U-shaped reinforcing bar mat, singly or in combination, are installed facing each other on the outside of the main shaft reinforcing bars, and each of the above-mentioned shear reinforcing members The prefabricated reinforcing bar assembly structure has ends thereof connected by a connecting rod, and intermediate portions of the opposing shear reinforcing members are tightly connected by the connecting rod. 2. The prefabricated reinforcing steel assembly frame according to claim 1, in which the connecting rods are made of reinforcing bars with couplers and high tension bolts. 3. The prefabricated reinforcing bar assembly structure according to claim 1, in which the connecting rods are steel bolts and nuts. 4. The prefabricated reinforcing steel assembly frame according to claim 1, wherein the reinforcing bar mat is constructed of small-diameter reinforcing bars whose vertical and horizontal intersection points are welded, and a fixing plate is fixed to a part of the reinforcing bars. 5. The shear reinforcing material is the prefabricated reinforcing steel assembly frame according to claim 1 of the utility model registration claim, in which the shear reinforcing material is composed of a U-shaped reinforcing bar mat attached to the main shaft reinforcing bar, and a U-shaped assembly hardware attached to the outside thereof. .