JP3343311B2 - Joint of earth retaining shoring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting for earth retaining shoring (cutting beams, bulging, burning).

[0002]

2. Description of the Related Art The joining of earth retaining supports is performed for cutting beams and flaring.

[0003] In the case of cut beams, the steel plates welded to the end faces of the cut beams (H-section steel) are tightened with bolts and nuts.
Furthermore, the cover plate is put on the flange surface of the H-section steel and tightened with bolts and nuts. If you are upset,
Same as above. In the case of a girder and battering, tighten with bolts and nuts through a brace piece.
In the case of a girder and a bulge, hook a metal fitting on the flange of the bulge, temporarily place the girder there, and tighten the bulge and the girder with bolts and nuts. In the case of fire and prostration, the same as above.

[0004]

In any of the above cases, since a large number of bolts and nuts are used, a great deal of labor is required. Welding of H-shaped steel end face plate, bolt hole drilling, etc. are necessary, and the processing cost is high.

[0005]

As shown in FIG. 1 and FIG. 3 (corresponding to claim 1), a joining fitting 20 (or 2) is provided.
2) a fitting body 26 (or 28) in which two or more sockets 32 described below are integrally connected to each other, and a wedge 42
And The above two or more sockets 3
2 projects straight (see FIG. 1) or diagonally (see FIG. 3).
The tip of the shoring (10) that has been joined is for receiving the following
In a state of being housed in the space 34 , they are integrally connected to each other. Each socket 32 is provided with a space 34 for receiving an earth retaining support having a bottom surface 36 and left and right side surfaces 38, and a wedge groove 40 is provided at a position opposite to the left and right side surfaces 38 of the space 34. The left and right side edges of the wedge 42 fit into the wedge grooves 40 of the socket 32.

Alternatively, as illustrated in FIG. 4 and FIG. 5 (corresponding to claim 2), a joining metal fitting 24 (or 25) is provided.
Is constituted by the metal fitting body 28 (or 30) in which the following clamp 54 is integrally connected to the socket 32, the wedge 42, and the clamp wedge 64 described below. The socket 32 is located on the back of the clamp 54.
The bottom surface 36 has a groove 54 for the H-section steel of the clamp 54.
6 and connected together at right angles to the bottom surface 58
To do. The clamp 54 is provided with an H-shaped steel groove 56 in which the plate 12 of the H-shaped steel 10 is slidably fitted, and wedge grooves 6 are formed on both side surfaces 60 of the H-shaped steel groove 56.
2 is provided. The clamping wedge 64 has a U-shaped base 66 that can slide while being fitted onto the plate 12 of the H-shaped steel 10, and a tapered portion 68 protruding from one side of the base 66. , So as to fit into the wedge groove 62 of the clamp 54.

[0007]

[Operation] In the case of the joint fitting 20 shown in FIGS. 1 and 2, the tip of the H-shaped steel 10 is housed in the space 34 of the socket 32 and the groove 4 is formed.
When the wedge 42 is inserted and pushed into the 0, the H-shaped steel 10 is strongly pressed and fixed to the bottom surface 36 of the space by the wedge action. When the bottom of the wedge 42 is flat, FIG.
As described above, the height h1 from the bottom surface 36 of the space 34 to the lower side 400 of the wedge groove 40 needs to be slightly lower than the height h2 of the H-section steel 10. However, when a convex portion is formed on the bottom of the wedge 42, this is not necessary. Accordingly, for example, if two sockets 32 are connected back to back and used, two earth retaining supports can be joined in a straight line. Further, if the socket 32 is connected at an angle and used, it can be used for joining a cutting beam and a fire.

In the case of the joint fittings 24 and 25 shown in FIGS. 4 and 5, the plate 12 of the H-section steel 10 and the H-shaped steel groove 56 of the clamp 54 of the joint fitting 24 are provided at predetermined positions of the H-shaped steel 10. (FIG. 5 (c))
When the taper portion 68 is pushed into the wedge groove 62 while the base 66 of the clamping wedge 64 is fitted to the plate 12 of the H-section steel 10, the clamp 54 (that is, the fitting body 28 of the joining fitting 24) is It is firmly fixed at 10 predetermined positions. When the bottom of the tapered portion 68 is flat, FIG.
As shown in (b), the distance d1 between the side 620 and the bottom surface 58 is
It is necessary to keep the thickness d2 of the plate 12 of the H-section steel 10 smaller than d2. However, if a convex portion is formed at the bottom of the tapered portion 68, this is not necessary. Therefore, using the joint fitting 24 or the joint fitting 25, it is possible to join the belly and the cut beam or the belly and the fire.

[0009]

[Embodiment 1] As shown in FIGS. 1 and 2, this embodiment is used for straight connection between earth retaining supports. Reference numeral 10 denotes an H-shaped steel. Hereinafter, the case where the H-section steel is used for the earth retaining support will be described. Reference numeral 20 denotes the entirety of the joint (FIG. 1)
(A)). The joining fitting 20 is composed of a fitting main body 26 and a wedge 42, and the fitting main body 26 is formed by connecting two sockets 32 (to be described later) back to back to be integrated.

Each socket 32 has a square space 34 for receiving the end of the H-section 10. 36 is space 3
Reference numeral 4 denotes a bottom surface, and 38 denotes a side surface. Both sides 38 are provided with wedge grooves 40. The lower side 400 of the wedge groove 40 is parallel to the bottom surface 36, while the upper side 402 is inclined forward and downward. Reference numeral 41 denotes a partition provided at a connection portion between the two sockets 32.

The wedge 42 is composed of a tapered portion 44 and a base portion 46, cuts 48 are provided on both sides of the base portion 46, and has wedge retaining bolts 50.

FIG. 2 shows a method of joining the H-section steel 10 by the above-mentioned joining fitting 20. FIG. 3A shows the bracket main body 2.
6 is a side view of FIG.
A part of the cross section is shown. In addition, only the metal fitting body 26 on one side is shown in a joint state with the H-section steel 10. FIG.
The height h1 from the bottom surface 36 of the space 34 of the socket 32 to the lower side 400 of the wedge groove 40 is equal to
Slightly lower than the height h2.

The H-section steels 10 are almost butted against each other in a straight line (a gap is formed only in the partition wall 41). The joining metal fitting 20 is applied from below, the tip of the H-shaped steel 10 is placed in the space 34, and the plate 12 and the bottom surface 36 are brought into close contact with each other (FIG. 3C). The two side edges of the tapered portion 44 of the wedge 42 are fitted into the wedge grooves 40 and pushed in (FIG. 4D), and the bolt 5
0 (omitted in FIG. 2). As a result, the H-shaped steel 10 and the joint fitting 20 are fixed, and the H-shaped steel 10 is linearly joined via the joint fitting 20. FIG. 1 (b) shows the cut beams,
The state of joints between the prongs and the fires with the joint fitting 20 is shown.

[0014]

Embodiment 2 This is an example of a case where the present invention is used for joining a cutting beam and a fire (FIG. 3). As shown in FIG. 3A, the joining fitting 22 in this case includes a fitting main body 28 and a wedge 42 (only one is shown, but actually four). The metal fitting body 28 is formed by connecting two sockets 32 back to back, and connecting the sockets 32 diagonally on both sides thereof to be integrated.

FIG. 1B shows a state in which the cutting beam and the fire are joined by using the joining fitting 22. Each socket 32
The method of joining the steel to the H-section steel 10 is the same as in the first embodiment. Incidentally, reference numeral 52 denotes a length adjusting hardware, which is not directly related to this application, and therefore the description is omitted.

[0016]

[Embodiment 3] This is an example of the case of using for the joint of the belly and the cut beam, or the joint of the belly and the fire (FIGS. 4 and 5). FIG. 4 shows two joining fittings 24 and 25. The joining fitting 24 is for joining the protruding portion and the cut beam, and the joining fitting 25 is for joining the protruding portion and the fire. Since these have almost the same structure, the joining fitting 24 will be mainly described below.

The joining fitting 24 comprises a fitting main body 30, one wedge 42, and four clamping wedges 64. The metal fitting body 30 is formed by connecting the above-described socket 32 and a clamp 54 described later to be integrated. Clamp 54
Is a shallow channel type having an H-shaped steel groove 56, and a bottom surface 58 thereof is perpendicular to the bottom surface 36 of the socket 32 (FIG. 5A). The width w1 of the H-section groove 56 is substantially equal to the width w2 of the H-section steel 10 (FIG. 5).
(A)). Wedge grooves 62 are provided on the upper and lower side surfaces 60 of the H-shaped steel groove 56. Side 6 on the bottom surface 58 side of the wedge groove 62
20 is parallel to the bottom surface 58, but the opposite side 62.
2 is tapered to the center and widens from there. The distance d1 between the side 620 and the bottom surface 58 is smaller than the thickness d2 of the plate 12 of the H-section steel 10 (FIG. 5B).

The base 66 of the clamping wedge 64 is formed by bending a strip-shaped sheet metal into a U-shape. The distance d3 between both sides (FIG. 5A) is the thickness d2 of the plate 12 of the H-shaped steel 10.
It is slightly larger and can be slid while being fitted onto the plate 12. A tapered portion 68 protrudes from the base 66 and has a wedge retaining bolt 70.

The socket 32 of the joint fitting 24 and the H-section steel 10
Is the same as in the first and second embodiments. Therefore, a method of fixing the clamp 54 to the H-section steel 10 will be described. FIG. 5 (b) and subsequent figures show a state in which (a) is cut at B and viewed from above (the plate 12 is shown in cross section because the H-section steel 10 is below the web 14; Only the other side is omitted).

At a predetermined position of the protruding H-section steel 10,
Plate 12 of H-section steel 10 and clamp 5 of fitting body 30
4 and the bottom surface 58 of the H-shaped steel groove 56 (FIG. 5).
(C)). The base 66 of the clamping wedge 64 is H
While being fitted to the plate 12 of the section steel 10, the tapered portion 68 is pushed into the wedge groove 62, and the bolt 70 is tightened (FIG. 5).
(D), the bolt 70 is not shown). Similarly, the clamping wedge 64 is pushed in from above the web 14 of the H-section steel 10 and the bolt 70 is tightened. Thereby, the metal fitting body 30 including the clamp 54 is fixed to the H-shaped steel 10 with the bulge. When the cut beam H-shaped steel 10 is joined to the socket 32 of the fitting main body 30, the cut beam and the belly are joined via the joining fitting 24.

[0021]

According to the first aspect of the present invention, a large number of bolts and nuts need not be tightened at the time of joining a girder or a barb, or joining a girder with a fire.
Assembly work is simplified. Eliminating the welding of the H-shaped steel end face plate and the drilling of bolts become unnecessary, and the processing cost is reduced.

According to the second aspect of the present invention, a large number of bolts and nuts are not required to be tightened at the time of jointing the belly and the cut beam or the belly and the fire.
Assembly work is simplified. Eliminating the welding of the H-shaped steel end face plate and the drilling of bolts become unnecessary, and the processing cost is reduced.

[Brief description of the drawings]

FIGS. 1A and 1B relate to a first embodiment of the present invention, in which FIG. 1A is an explanatory view of a joint 20 and FIG. 1B is an explanatory view showing a specification state of the joint 20. FIG.

FIG. 2 is an explanatory view of a joining method of the H-shaped steel 10 of the joining fitting 20 in the first embodiment of the present invention.

FIGS. 3A and 3B relate to a second embodiment of the present invention, in which FIG. 3A is an explanatory view of a joint fitting 22, and FIG.

FIG. 4 is an explanatory diagram of joining metal fittings 24 and 25 according to a third embodiment of the present invention.

FIG. 5 is an explanatory view of a method of fixing the clamp 54 of the joint fitting 24 to the H-section steel 10 in Embodiment 3 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 H-section steel 12 H-section steel plate 14 H-section steel web 20, 22, 24, 25 Joint fittings 26, 28, 30 Hardware main body 32 Socket 34 Space 36 Bottom surface 38 Side surface 40 Wedge groove 400 Lower groove 402 groove Upper side 41 Partition wall 42 Wedge 44 Wedge taper part 46 Wedge base 48 Cut 50 Wedge retaining bolt 52 Length adjustment fitting 54 Clamp 56 H-shaped steel groove 58 Groove bottom surface 60 Groove side surface 62 Wedge groove 620 , 622 Wedge groove side 64 Clamping wedge 66 Wedge base 68 Wedge taper 70 Wedge retaining bolt

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 17/04 E02D 17/08

Claims (2)

(57) [Claims] 1. Each of two or more sockets
Post straight or diagonally into the support receiving space
In the state where the tips of the combined shoring are respectively housed , the shoring is constituted by a fitting body integrally connected to each other and a wedge, and the socket has a space for receiving a retaining shoring having a bottom surface and left and right side surfaces. And a wedge groove is provided at a position opposite to the left and right side surfaces of the space, wherein the wedge has a left-right edge that fits into the wedge groove of the socket. Metal fittings. 2. A socket is mounted on the back of the clamp.
The bottom of the support receiving space of the
At right angles to the bottom of the H-shaped steel groove
And a wedge and a wedge for clamping , which are integrally connected to each other. The socket has a space for receiving an earth retaining support having a bottom surface and left and right side surfaces. A wedge groove is provided at a position opposite to the side surface, wherein the clamp has an H-shaped steel groove into which an H-shaped steel plate is slidably fitted, and on both sides of the H-shaped steel groove. The clamp wedge has a U-shaped base slidable while being fitted onto the H-shaped steel plate, and a tapered portion protruding from one side of the base. An earth retaining support fitting, wherein a tapered portion fits into a wedge groove of the clamp.