JPH10196120A - Shear reinforcement and method of connecting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve execution by providing a hook part locked to one main bar on one end of a steel rod, and detachably mounting a locking plate locked to the other main bar on the other end. SOLUTION: A shear reinforcing bar is constituted of a steel rod 110 having a hook part 111 on one end side and having a screw part 112 on the other end, a locking plate 120 and a nut 130. The rod 110 is set slightly longer than an interval between main bars c1, c2 or between distribution reinforcements, and the diameter may have a large diameter because it need not be bend at a site. At the time of execution, after the hook 111 is locked to the main bar c1, the plate 120 is fitted to the screw 112, the nut 130 is screwed on the screw 112, and the shear reinforcing bar is tightened between the main bars c1, c2. Next, a rib is provided on a side abutted on the main bar c2 of the plate 120 at need, the cross section is made U-shape and the like, and dislocation of the plate 120 is prevented. In addition, the plate 120 is exchanged to the hook 111, and screwed or fixed on the steel rod. Thereby connection strength between the main bars can be secured, execution is simplified and cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shear reinforcing bar for connecting main bars or distribution bars and a connecting method thereof.

[0002]

2. Description of the Related Art Conventionally, a reinforcing bar arranged inside a wall-like structure or the like is composed of a main bar or a distribution bar in the vertical and horizontal directions and a shear reinforcing bar connecting the main bar and the like. Then, as shown in FIG. 11, the conventional shear reinforcing bar is formed by bending a hook portion b1 at one end of a steel bar a and hooking the hook portion b on one of the main bars c1 and the like arranged in parallel. There is one that bends the end at the site to form a hook portion b2 and hooks the other main bar c2 or the like.

[0003] As shown in FIG. 12, hook-like members e1 and e2 having a threaded portion d at one end are connected to respective main bars c1 and c2.
There is a type in which these screw portions d are screwed and connected with a coupler f having a through screw hole.

[0004]

When hook portions b are formed at both ends of a steel bar a, it takes time and labor to bend a reinforcing bar on site, and the construction efficiency is poor. In addition, when a large-diameter rebar is used, bending may be difficult.

On the other hand, when two hook-like members e are connected by a coupler f, the cost increases. When the width between the main bars and the like is small, the joint length of the coupler f becomes short, so that the joint strength of the two hook-shaped members e cannot be sufficiently secured.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a shear reinforcing bar capable of improving construction efficiency and reducing costs and a method of connecting the same. Aim.

[0007]

Means for Solving the Problems As means for solving the above-mentioned problems, the present invention provides, as a first aspect, a shear reinforcing bar connecting two main bars or distribution bars arranged side by side.
A steel bar having a hook portion on one end side for hooking on one of the main bars and the like, and a hook plate detachably provided on the other end side of the steel bar for hooking on the other side of the main bars and the like, Provides shear reinforcement.

According to a second aspect of the present invention, in a shear reinforcing bar for connecting a pair of main bars or distribution bars arranged side by side in a plurality of sets, a hook for hooking to one end side of one of the main bars or the like of each set. A plurality of steel rods having a portion, and a single retaining plate detachably provided on the other end side of each of the steel rods for hanging over and hooking the other of the main bars and the like of each set, Provides shear reinforcement.

According to a third aspect of the present invention, in a shear reinforcing bar connecting two main bars or distribution bars arranged side by side, a steel bar and one end of the steel bar are provided to be hooked on one of the main bars and the like. A shear reinforcing bar is provided, comprising a hook plate A and a hook plate B detachably provided on the other end of the steel bar for hooking on the other of the main bars and the like.

According to a fourth aspect of the present invention, in a shear reinforcing bar connecting a pair of main bars or distribution bars arranged side by side in a plurality of sets, a plurality of steel bars and one end side of each steel bar are provided. One hooking plate A provided for hanging and hooking on one of the main bars and the like of each set, and on the other end side of each of the steel bars for hooking and hanging on the other of the main bars and the like of each set. Provided is a shear reinforcing bar composed of a single retaining plate B provided detachably.

According to a fifth aspect of the present invention, there is provided a shear reinforcing bar according to the third or fourth embodiment, wherein the retaining plate A is detachably provided on one end of the steel bar.

According to a sixth aspect of the present invention, in the shear reinforcement according to the third aspect, the hook plate A is detachably provided on one end side of the steel bar, and the hook plate A and the hook plate B are provided with steel bars. Nuts that are screwed into the threaded portions formed at both ends of the
Provides shear reinforcement.

According to a seventh aspect, in the shear reinforcing bar according to any one of the first to sixth aspects, each of the retaining plates includes:
Provided is a shear reinforcing bar provided with a rib protruding on a side which comes into contact with a main bar or the like.

According to an eighth aspect of the present invention, in the method in which the lattice-shaped main or group of distribution bars are opposed to each other and connected between them by a shear reinforcing bar, a steel bar is used to connect the two opposed locking plates. After connecting the connected shear reinforcing bars, and inserting them into lattice-like cells such as the above-described main bar groups and spanning between the opposing main bar groups,
A method of connecting shear reinforcing bars is provided, in which the main reinforcing bars and the like are connected to each other by rotating them so as to lock the respective locking plates outside the main bars and the like.

According to a ninth aspect of the present invention, in the method of connecting the shear reinforcing bars according to the eighth aspect, the pitch of the vertical or horizontal bars of the lattice-shaped main or group of reinforcing bars is increased, and the connecting portion of the shear reinforcing bars is increased. The present invention provides a method of connecting shear reinforcing bars, the other portions of which are formed small.

According to a tenth aspect of the present invention, in the method of connecting a shear reinforcement according to the eighth or ninth aspect, the lattice-shaped squares of the main muscle group or the distribution muscle group are formed in a rectangular shape, and the shear reinforcement is hooked. The stop plate is also formed in a rectangular shape, and the long side of the stop plate is
Formed shorter than the long side of the square and longer than the short side of the square,
A method for connecting a shear reinforcement is provided.

According to an eleventh aspect, in the shear reinforcing bar used in the method for connecting a shear reinforcing bar according to the eighth aspect, two opposed hooking plates and a steel rod connecting the hooking plates are provided. And a shear reinforcement.

[0018]

Embodiment 1 As shown in FIG. 1, a shear reinforcing bar according to Embodiment 1 includes a steel bar 110, a retaining plate 120, and a nut.
Consists of 130. The steel bar 110 has a U-shaped, V-shaped, L-shaped or the like hook portion 111 at one end, and a screw portion 11 at the other end.
With 2. The length of the steel bar 110 is formed to be slightly longer than a predetermined interval between the main bars c1 and c2, and the diameter thereof may be a large diameter since it is not necessary to bend on site. Also,
The threaded portion 112 may be formed only at the end of the steel bar 110,
A threaded steel bar having a threaded portion over its entire length may be used. In addition, there may be a distribution muscle other than the main muscle, and the same applies to the following embodiments.

The retaining plate 120 has a plate pressure enough to secure a predetermined strength as a reinforcing bar and an area large enough to be hooked to the main bar, and its shape is square, circular, elliptical or the like. Various shapes can be adopted. Further, a hole (not shown) for inserting the screw portion 112 of the steel bar 110 is provided. As the nut 130, various nuts, such as one for a screw reinforcing bar and a normal machine screw, can be used.

First, the hook 111 is attached to the main bar.
Is hooked on the main bar c1, and in this state, the hook plate 12 is
Insert 0. Then, the nut 130 is screwed to the screw portion 112 and fastened, whereby the nut 130 can be securely attached between the main bars c1 and c2.

The nut 130 is fixed in advance around the hole on the inner side or the outer side of the hooking plate 120, and
It is also possible to fasten by rotating 120 itself. When the nut 130 is fixed to the latch plate 120, forging or friction welding is performed. FIG. 1 shows one main bar c2.
In this case, the hook plate 120 is hooked on the hook plate 120, but a structure in which a plurality of main bars are hooked on the hook plate 120 may be used.

[0022]

[Embodiment 2] In Embodiment 1 described above, a case where a flat-shaped hooking plate is used, as shown in FIGS.
A rib 121 or a rib 121 is provided on the side of the retaining plate 120 that contacts the main bar c2.
In some cases, the cross section is formed in an L-shape, a U-shape, a C-shape, or the like by projecting the 122. In this case, it is possible to prevent the hook plate 120 from shifting or the like. The rib may be provided on the opposite side of the contact side or may be provided on both sides.

[0023]

[Embodiment 3] FIG. 4 shows a case of a shear reinforcing bar for connecting a pair of main bars arranged side by side in a plurality of pairs. That is, FIG. 4 shows a case where four main bars c1 to c4 are connected. The steel bar 110 has the same shape as that of the first embodiment, and is hooked on the main bars c1 and c3 by using two of them. Then, a band-shaped hooking plate 140 is hung over the main bars c2 and c4, and fastened to the threaded portion 112 of each steel bar 110 by a nut 130.

Although FIG. 4 shows a case where four main bars are connected, a case where six or more main bars are connected is shown in FIG.
This can be achieved by increasing the number of hooks and using a long locking plate 140. Further, ribs can be provided on one or both of both longitudinal edges of the hook plate 140.

[0025]

Embodiment 4 FIG. 5 shows a steel rod according to a fourth embodiment of the present invention.
210 and hook plates 220 and 230 provided on both ends thereof and nut 24
Consists of 0. Screw portions 211 and 212 are formed at both ends of the steel bar 210. A nut 221 is fixed to one surface of the retaining plate 220, and the screw portion 211 of the steel bar 210 is screwed to the nut 221 to mount the nut 221 to the steel bar 210.

The steel rod 210 may be a threaded steel rod having a screw in its entire length. Further, a hole is formed in the hooking plate 220, a nut is fixed around the outer surface of the hole (the surface opposite to the side contacting the main bar c1), and the screw portion 211 is screwed into the nut through the hole. Alternatively, the steel bar 210 may be attached. In addition, the threaded portion 21 that penetrated the hole of the retaining plate 220
Alternatively, the nut may be fastened with an unfixed nut from the outside. Further, the end surface of the steel bar 210 may be fixed to one surface of the hook plate 220 by rotary friction welding. In addition,
The mounting structure of the hook plate 230 and the steel bar 210 and other structures are the same as those in the first embodiment.

For attachment to the main bar, first, the hook plate 220 is hooked on the main bar c1, and in this state, the hook plate 230 is hooked on the screw portion 212.
Fit. Then, the nut 240 is screwed to the screw portion 212 and fastened, so that the nut 240 can be securely attached between the main bars c1 and c2.

[0028]

Fifth Embodiment FIG. 6 shows a case where four main bars c1 to c4 are connected. The steel bar 210 has the same shape as that of the above-described fourth embodiment, and has a structure in which two band-shaped hooking plates 250 and 260 are connected by using two of them. The structure of each of the other parts is based on the examples of the third and fourth embodiments.

[0029]

[Embodiment 6] FIG. 7 shows a case in which hook plates 280 at both ends of a steel bar 270 are formed to be detachable. Screw portions 271 are formed at both ends of the steel bar 270. On the other hand, the hook plate 280 has a nut portion 290 integrally provided on the surface of the main bars c1 and c2 by forging or friction welding. In the case of connection, first, a steel bar 270 is inserted between the main bars c1 and c2 and crossed over. Next, the nut portion 290 is screwed into the screw portions 271 at both ends, and the nut 290 is turned together with the retaining plate 280 to perform attachment.

By integrally providing the nut portion 290 with the latch plate 280 as described above, it is not necessary to make a hole in the latch plate 280, so that it is economical. Also, the rattling of the latch plate is less than in the case where the latch plate and the nut are separate bodies, and a strong connection structure can be obtained.

A hole is formed in the latch plate 280 and the nut 29
0 may be integrally provided on the surface of the hook plate 280 opposite to the main bars c1 and c2. Alternatively, a method in which the hook plate and the nut portion are formed separately, the steel bar 270 is inserted between the main bars c1 and c2, and then the hook plates are attached to both ends thereof, and the nuts are fastened from outside the nuts.

[0032]

Seventh Embodiment A shear reinforcing bar shown in FIG. 8 has a structure in which two opposing hooking plates 310 are connected by steel rods 320. The latch plate 310 has a shape such as a rectangle or an ellipse, and has a shape in which a long portion and a short portion are formed in a planar linear distance.

As shown in FIG. 9, two main bars c1 and c2 and two main bars c3 and c opposing the main bars c1 and c2 in the lattice-shaped main bar group composed of the vertical bars and the horizontal bars are provided by the shear reinforcing bars.
And 4. In this case, the pitch of the longitudinal or horizontal streaks of the lattice-shaped main streaks is set large at the connecting portion of the shear reinforcing bars and small at other portions. And the hook plate 310
The long side is formed shorter than the long side of the grid-like cell and longer than the short side of the cell.

The connection method is as follows: first, between the main muscles c1 and c2;
Longitudinal squares k1, k2 formed between the main bars c3, c4
Then, the hooking plate 310 is inserted in a vertically long state and passed over. Then, as shown in FIG. 10, the hanging plate 310 is rotated to be horizontally long, and each hanging plate 310 is extended so as to cross the outside of the main muscles c1 to c4. Thereby, the main muscles c1 to c4 can be connected.

[0035]

The shear reinforcement of the present invention has a simple structure of a steel rod having a hook portion and a retaining plate or a simple structure having a retaining plate at both ends of a steel rod. While ensuring sufficient connection strength between them, simplification of construction and reduction of cost can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of Embodiment 1.

FIG. 2 is an explanatory diagram of a second embodiment.

FIG. 3 is an explanatory diagram of Embodiment 2.

FIG. 4 is an explanatory diagram of a third embodiment.

FIG. 5 is an explanatory view of Embodiment 4.

FIG. 6 is an explanatory diagram of a fifth embodiment.

FIG. 7 is an explanatory view of Embodiment 6.

FIG. 8 is an explanatory diagram of a seventh embodiment.

FIG. 9 is an explanatory diagram of a method of attaching a shear reinforcing bar according to the seventh embodiment.

FIG. 10 is an explanatory view of a method of attaching a shear reinforcement according to the seventh embodiment.

FIG. 11 is an explanatory view of a conventional technique.

FIG. 12 is an explanatory diagram of a conventional technique.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayuki Moriya 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Taisei Construction Co., Ltd. Inside Taisei Construction Co., Ltd. (72) Inventor Yoshio Nishida Inside Taisei Construction Co., Ltd.

Claims (11)

[Claims] 1. A shear reinforcing bar connecting two main bars or distribution bars arranged side by side, a steel bar having a hook portion on one end side for hooking on one of the main bars and the like, and the other of the main bars and the like. A reinforcing plate, which is detachably provided on the other end of the steel bar so as to be hooked on the steel bar. 2. A shear reinforcing bar for connecting a pair of main bars or distribution bars arranged side by side in a plurality of sets, wherein one end has a hook portion for hooking to one of the main bars or the like of each set. A shear reinforcing bar comprising: a plurality of steel bars; and a single retaining plate detachably provided on the other end side of each of the steel bars so as to span and hook the other of the main bars and the like of each of the sets. . 3. A shear reinforcing bar for connecting two main bars or distribution bars arranged side by side, wherein a steel bar and a hook plate provided at one end of the steel bar for hooking on one of the main bars or the like. A and a retaining plate B detachably provided on the other end side of the steel bar to be hooked on the other of the main bars and the like. 4. A shear reinforcing bar for connecting a pair of main bars or distribution bars arranged side by side in a plurality of sets, comprising: a plurality of steel rods; A single retaining plate A provided to be hooked over one of the main bars and the like, and detachably attached to the other end of each of the steel bars to be hooked over the other of the main bars and the like of each of the sets. A shear reinforcing bar consisting of a single retaining plate B provided. 5. The shear reinforcing bar according to claim 3, wherein the retaining plate A is detachably provided on one end side of the steel bar.
Shear reinforcement. 6. The shear reinforcing bar according to claim 3, wherein a retaining plate A is detachably provided at one end of the steel bar, and the retaining plates A and B are provided at both ends of the steel bar. A shear reinforcing bar integrally provided with a nut portion to be screwed to the formed screw portion. 7. The shear reinforcing bar according to claim 1, wherein each of the retaining plates is provided with a rib protruding on a side that comes into contact with a main bar or the like. 8. A method in which a lattice-shaped main reinforcing bar group or a distribution bar group is opposed to each other and connected between them by a shear reinforcing bar, wherein a shearing bar in which two opposed hooking plates are connected by a steel rod. Reinforcing bars are inserted into the grid-like squares of each main bar group and the like and hung between the opposing main bar groups, and then rotated to lock each latch plate on the outside of each main bar group and the like. A method of connecting shear reinforcement bars that connects opposite main reinforcement groups with shear reinforcement bars. 9. The connecting method of the shear reinforcing bars according to claim 8, wherein the pitch of the longitudinal or horizontal bars of the lattice-shaped main or group of the reinforcing bars is larger at the connecting portion of the shear reinforcing bars,
Other parts are made small. 10. The method of connecting a shear reinforcement according to claim 8 or 9, wherein a lattice-like square of the main muscle group or the distribution muscle group is formed in a rectangular shape, and a retaining plate of the shear reinforcement is also provided. A method of connecting shear reinforcing bars, which is formed in a rectangular shape and a long side of a retaining plate is shorter than a long side of a square and longer than a short side of a square. 11. A shear reinforcing bar used in the method of connecting a shear reinforcing bar according to claim 8, comprising a pair of opposed hooking plates, and a steel rod connecting the hooking plates. Shear reinforcement.