JPH04319122A - Clamp metal for concrete part - Google Patents

Abstract

PURPOSE:To exactly clamp concrete parts constituting faces to be clamped on the same planes or other than parallel planes by using metal clamps to connect laminated concrete parts. CONSTITUTION:The first long hole is formed in one of plates bent according to the angle of a face to be clamped, and the second long hole with a given inclined angle to the first long hole is formed in the other piece. In connecting concrete parts, the metal clamps can be moved in parallel. The metal clamp pieces and the surface of concrete parts can thus be clamped under a closedly contact state.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening tool for tightly bonding concrete members stacked at an angle such that their faces intersect with each other in close contact with each other.

0002

[Prior Art] A fastening fitting for bringing laminated concrete members into close contact with each other is known from Japanese Patent Application Laid-Open No. 61-106844, which was developed by the applicant and has already applied for a patent.
There is a technique disclosed in the publication No. This technology is used to bring concrete members into close contact with each other and to prevent gaps from forming between them. This technology uses a bonding plate that has holes of a predetermined shape and elongated holes with a predetermined angle of inclination. The concrete members are bound together using the concrete members. In other words, a fastening plate is attached to an insert anchor buried in a concrete member via bolts, and the fastening plate is rotated around the hole to forcibly bring the side of the elongated hole into contact with the bolt. It is constructed so that tension is applied to bring the concrete members into close contact.

0003

[Problem to be solved by the invention] In the above conventional technology,
A binding plate having holes and elongated holes is used, and the concrete members are connected to each other by rotating the binding plate around the hole. Therefore, when the surfaces of the concrete members to be bound are on the same plane or in parallel planes, it is easy to bring these concrete members into close contact with each other and to bind them. However, if the surfaces of the concrete members to be bonded are constructed so as to intersect with each other, there is a problem in that these concrete members cannot be tightly bonded. In other words, even if the binding plate is bent according to the intersecting angle of the surface of the concrete member, if the binding plate is rotated around the hole, the piece with the elongated hole will move away from the surface of the concrete member in response to this rotation. Separate. For this reason, conventional binding plates cannot bind concrete members together.

An object of the present invention is to provide a fastening tool that can easily and reliably fasten concrete members even when the surfaces of the concrete members to be fastened intersect with each other. We aim to provide the following.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, a fastening fitting for concrete members according to the present invention is provided in which an insert anchor for screwing a bolt is buried in a predetermined position in advance, and the concrete members are laminated. The fastening fitting has a plate member bent according to the angle formed by the surfaces to be fastened, and has a first elongated hole formed in one piece, and a predetermined angle with respect to the first elongated hole in the other piece. A second elongated hole is formed at an angle.

[0006]

[Operation] According to the above means, the laminated concrete members can be brought into close contact with each other and bound together, regardless of the angle of the surfaces of the stacked concrete members to be bound. That is, a plate member having a bending angle corresponding to the angle formed by the surfaces to be fastened is formed, a first elongated hole is formed in one piece of the plate member, and the first elongated hole is formed in the other piece. Since the fastening fitting is constructed by forming a second elongated hole inclined at a predetermined angle to the concrete member, the fastening fitting can be attached to the insert anchor buried in the concrete member via the bolt and moved in parallel. By,
The fastening fitting can be moved along the surface of the concrete member and the distance between the first elongated hole and the second elongated hole can be changed. Therefore, in the process of moving the fastening fitting in parallel, the first elongated hole and the second elongated hole can be brought into contact with the bolts screwed into the concrete members, respectively, and thereby the concrete members can be brought into close contact with each other. .

[0007]

[Embodiment] Hereinafter, an embodiment of a fastening fitting to which the above means is applied will be explained with reference to the drawings. Fig. 1 is an explanatory diagram of a fastening fitting bent at a right angle, Fig. 2 is an explanatory diagram of a fastening fitting bent at an obtuse angle, Fig. 3 is a cross-sectional view of a manhole constructed by laminating concrete members, and Fig. 4 is a right-angled drawing. FIG. 5 is an explanatory diagram of a fastening state using a fastening fitting bent at an obtuse angle. The fastening fittings 1 and 2 shown in FIGS. 1 and 2 are parts used to fasten concrete members 3 and 4 having inclined walls and concrete members 5 and 6 having straight walls as shown in FIG. applied to the right-angled fastening area A formed between the concrete members 3 and 5, or the obtuse-angled fastening area B formed between the concrete members 4 and 5 or the concrete members 4 and 6, respectively. The concrete members 3 to 6 are tightly connected to each other.

The fastening fitting 1 is applied to the fastening part A, and as shown in FIG. 1, elongated holes 8 and 9 are formed in pieces 7a and 7b of a plate member 7 bent at right angles, respectively. . The elongated hole 8 is formed parallel to the bent line 7c of the pieces 7a, 7b, and the elongated hole 9 is formed at a predetermined inclination angle with respect to the elongated hole 8. The positions of the elongated holes 8 and 9 are set to be equal to the positions of the insert anchors 11 buried in the concrete members 3 and 5 in advance. In this embodiment, the inclination angle of the elongated hole 9 with respect to the elongated hole 8 is set to 25 degrees. However, the angle is not limited to this, and may be within a range of about 15 degrees to 35 degrees.

The fastening metal fitting 2 is applied to the fastening part B, and as shown in FIG. , 9 are formed. The bending angle of the plate member 10 is equal to the angle formed by the surfaces of the concrete members 5, 4 or the concrete members 4, 6 to be bonded.

The above-mentioned fastening members 1 and 2 may have elongated holes 8 and 9 formed in plate members 7 and 10 bent at a predetermined angle in advance, or elongated holes 8 and 9 may be formed in advance in a flat plate. The plate may then be bent at a desired angle. The dimensions of the elongated holes 8 and 9 are not particularly limited, and may be set as appropriate depending on the bolt size and fastening site to which they are applied. Moreover, the elongated hole 8 is connected to the plate members 7 and 10.
It does not necessarily have to be formed parallel to the bending line of
The elongated holes 8 and 9 may be formed in a "V" shape.

The procedure for binding the concrete members 3 to 6 using the binding fittings 1 and 2 constructed as described above will be explained. First, the case where the upper surface of the concrete member 3 and the side surface of the concrete member 5 are tightly connected will be described using FIG. 4. As shown in FIG. 4(A), the fastening portions A in the concrete members 3 and 5 are formed in a right-angled shape. Insert anchors 11 each having a female thread are embedded in predetermined positions on the upper surface 3a of the concrete member 3 and the side surface 5a of the concrete member 5, respectively. The fastening fitting 1 is fastened by screwing the bolt 12 into the insert anchor 11. At this time, the piece 7a of the plate member 7 is brought into close contact with the upper surface 3a, and the piece 7b is brought into close contact with the side surface 5a, and the fastening fitting 1 is fastened to such an extent that it can move laterally. Thereafter, a striking force is applied to the fastening fitting 1 with a hammer or the like to move it in parallel in the direction of the arrow shown in FIG. The concrete members 3 and 5 and the fastening fitting 1 are firmly fastened. When a striking force is applied to the fastening fitting 1, the fastening fitting 1 moves in parallel along the elongated holes 8 and 9 in the direction in which the striking force is applied. Therefore, the pieces 7b move along the side surface 5a of the concrete member 5, making it possible to securely fasten them without creating any gaps between them.

Next, the case where the side surfaces of the concrete members 5 and 4 or the concrete members 4 and 6 are tied together will be explained with reference to FIG. concrete member 5, 4 or 4,
The side surface of 6 is formed into an obtuse angle as shown in FIG. At predetermined positions on the sides of these concrete members 4 to 6,
An insert anchor is buried in advance. For example, when the concrete members 5 and 4 are to be fastened together, the bolts 12 are screwed into insert anchors embedded in the sides of these members 5 and 4, and the fastening fittings 2 are fastened to such an extent that they can be moved laterally. Then, an impact force is applied to the fastening fitting 2 in the direction of the arrow shown in FIG. The lower surface of the bolt 12 screwed into the slot 8 is brought into contact with the lower surface of the elongated hole 8, and then the bolt 1
2 firmly fastens the fastening fitting 2 to the concrete members 5 and 4.

By bringing the bolt 12 into contact with the side surface of the elongated hole 9 as described above, the bolt 1 absorbs forces such as its own weight acting on the underlying concrete member or frictional force with the ground.
It is possible to support the bolt 12 by applying shear stress to the bolt 12 in addition to the frictional force between the bolt 12 and the fastening fittings 1 and 2. Therefore, no gaps are created between the concrete members.

[0014]

As described in detail above, according to the fastening fitting according to the present invention, the fastening fitting is formed into a plate member having a bending angle corresponding to the angle formed by the surfaces to be fastened, and One piece has a first elongated hole and the other piece has a second elongated hole inclined at a predetermined angle with respect to the first elongated hole. When the fitting is attached to the concrete member to be fastened, it can be moved in parallel. Therefore, no matter what angle the surfaces of the laminated concrete members to be fastened are configured, by moving the fastening fitting in parallel, a gap will be created between the piece of the fastening fitting and the surface of the concrete member. It has the characteristics that these concrete members can be brought into close contact with each other and bonded together.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a fastening fitting bent at right angles.

FIG. 2 is an explanatory diagram of a fastening fitting bent at an obtuse angle.

FIG. 3 is a sectional view of a manhole constructed by laminating concrete members.

FIG. 4 is an explanatory diagram of a fastened state using a fastening fitting bent at right angles.

FIG. 5 is an explanatory diagram of a fastened state using a fastening fitting bent at an obtuse angle.

[Explanation of symbols]

1 and 2 are fastening fittings, 3 to 6 are concrete members, 7 and 1
0 is a plate member, 8 and 9 are elongated holes, 11 is an insert anchor, and 12 is a bolt.

Claims (1)

[Claims] Claim 1: A fastening fitting for laminated concrete members in which insert anchors for screwing bolts are embedded in advance at predetermined positions, the plate member being bent according to the angle formed by the surfaces to be fastened. A fastening fixture for a concrete member, characterized in that a first elongated hole is formed in one piece, and a second elongated hole is formed in the other piece, the second elongated hole being inclined at a predetermined angle with respect to the first elongated hole. .