JP6893799B2 - Beam flint connection structure and beam flint connection piece - Google Patents

Description

The present invention relates to an end beam in which the end of a column (square steel pipe) beam is joined to the flint beam via a beam flint connection piece, and a beam flint connection structure and a girder in which the end is connected to the flint beam. Regarding the flint connection piece, the end of the column (square steel pipe) girder can be easily and firmly joined to the end girder and the flint beam via the girder flint connection piece. Is.

H-shaped steel is mainly used for the retaining material such as abdominal raising and cutting beams used in the retaining work, and column (square steel pipe) cutting beams are also used depending on the situation.

H-section steel has a strong axis and a weak axis for bending, and the bending strength differs depending on the bending direction. Therefore, flint beams, shelf piles, and horizontal connecting materials are also used as reinforcing materials, and are usually used. , As shown in FIG. 4, flint beams 22 and 22 are installed at the joint between the flint 20 supporting the retaining wall and the girder 21, and both ends of each flint 22 and 22 are erected with the girder 21 20. Each is bolted to.

Further, as shown in FIG. 5, a plurality of girders 21 are installed at intervals in the direction of the material axis of the abdominal 20, and the girders 21 and 21 are connected by a connecting beam 23, and each girder is connected. It is also possible to install flint beams 22, 22 on the outside of the flint beam, respectively. By erection in this way, it is possible to raise the belly and increase the flint span L of 20 to support the retaining wall in a more stable state.

On the other hand, column (square steel pipe) beams are not reinforced with reinforcing materials such as flint beams because there is no concept of strong shafts and weak shafts. As illustrated in the above, the flint piece 24 is formed in a triangular shape when viewed in a plane, and the abdomen is raised and joined to the 20.

Japanese Patent Application Laid-Open No. 04-068116 JP-A-2002-081084 JP-A-2015-175226

However, H-section steel has a strong axis and a weak axis with respect to bending, and the bending strength differs depending on the bending direction. Therefore, it is necessary to pay attention to the direction when installing. Further, since many joining bolts are required for joining the members, there is a problem that a great deal of labor is required for tightening the bolts.

On the other hand, since the column beam cannot sufficiently secure the flint span L, there is a problem that the advantages of the column beam cannot be fully utilized. In addition, reinforcement with flint beams is also performed if necessary, but it is not often implemented because joint bolts cannot be used freely unlike H-section steel.

The present invention has been made in order to solve the above problems, and is connected to an end beam and a flint beam by raising the ends of a column (square steel pipe) girder through a girder flint connection piece. It is an object of the present invention to provide a beam flint connection structure and a beam flint connection piece which can be easily and firmly joined.

The present invention is an invention of a girder flint connection structure in which an end portion of a column girder is connected to a flint beam and an end girder joined by raising the abdomen via a girder flint connection piece. The flint connection piece is provided at the girder flint connection piece main body installed between the end girder and the column girder, and at the end of the girder flint connection piece main body on the end girder side and the column girder side, respectively. The end beam connecting joint and the column cutting beam connecting joint and the flint connecting joints provided on both sides of the flint connecting piece main body are provided, and the flint connecting piece main body has a box-shaped cross section. The girder connection joint and the column girder connection joint are formed in a flange shape on the outer periphery of the end portion of the girder flint connection piece main body, and the flint connection joint is provided on the side portion of the girder flint connection piece main body. It is characterized in that it is provided in the shape of a beam protruding to the side of the main body of the girder flint connection piece.

The girder flint connection piece body can be formed of a square steel pipe having the same diameter and shape as the end girder and the column girder, and also formed of a square steel pipe having a diameter larger than that of the column girder and the end girder. By doing so, the strength can be increased.

The end girder connection joint and the column girder connection joint shall be provided by a method such as attaching a plate to the end of the girder flint connection piece body by projecting a plate in a brim shape in the direction perpendicular to the axis of the girder flint connection piece body. If necessary, the beam may be continuously provided in the circumferential direction of the beam flint connection piece main body.

In the flint connection joint, a strip-shaped plate (long pullet) is projected on the upper and lower ends of the beam flint connection piece body at the edge of the strip-shaped plate in a flange shape in the direction perpendicular to the axis from the side surface of the beam flint connection piece body. It can be provided by a method such as attaching it in a closed state, and by continuously providing it in the axial direction of the girder flint connection piece body, the size of the flint beam (flint connection piece) can be freely accommodated. .. Bolt holes are provided in advance in each connection joint.

In the present invention, a column beam connection joint and an end beam connection joint are provided on the column beam side and the end of the end beam of the connection piece main body of the beam flint connection piece, respectively, and these connection joints are provided. Projects in a beam shape in the direction perpendicular to the axis of the connecting piece main body, and is continuously provided in the circumferential direction of the connecting piece main body.

Further, at the ends of the column girder and the end girder, connecting joints are provided in a brim shape in the direction perpendicular to the axis of the column girder and the end girder, respectively, and continuously provided in the circumferential direction of each girder. Has been done.

Further, flint connection joints are provided on both sides of the girder flint connection piece main body, and the flint connection joint is formed on the side portion of the connection piece main body in a brim shape protruding to the side of the connection piece main body.

With the above configuration, according to the present invention, the end portion of the column (square steel pipe) cutting beam is easily and firmly joined to the end cutting beam and the flint beam via the cutting beam flint connection piece. Can be joined.

That is, since the connection piece main body, the end beam, and the connection joints provided on the column beam of the beam flint connection piece are provided as described above, the joint plate is omitted and a plurality of joint bolts are omitted. It can be easily and firmly joined to the end beam and the flint beam, which are joined by raising the end of the column (square steel pipe) girder, via the girder flint connection piece, and the number of joining bolts. Can be reduced.

The girder flint connection piece and the column girder, end girder and flint beam joined via the girder flint connection piece are shown, FIG. 1 (a) is a plan view, and FIG. 1 (b) is FIG. It is a view of the line arrow. It is a perspective view of the girder flint connection piece. Another embodiment of the present invention is illustrated, and FIG. 3A is a plan view of the girder flint connection piece and the column girder, end girder and flint beam joined by the girder flint connection piece. , FIG. 3 (b) is a view taken along the line in FIG. 3 (a). It is a top view which shows the conventional installation method of a cutting beam and a flint beam. It is a top view which shows the conventional installation method of a cutting beam and a flint beam. It is a top view which shows the conventional installation method of a column beam.

1 (a), (b) and 2 are diagrams of an embodiment of the present invention. In the drawings, the end beam 2 and the left and right flint beams 3 and 3 are attached to the end of the column beam 1. Is bolted together by a plurality of joining bolts 5 via the beam flint connection piece 4. The ends of the end cutting beam 2 and the left and right flint beams 3 and 3 on the abdominal 6 side are formed by a plurality of joint bolts 5 via a length adjusting material 7 and a flint receiving piece 8 on the side of the abdomen 6, respectively. It is bolted.

The column cutting beam 1 is formed of a square steel pipe, and a connecting joint 1a is continuously formed in a brim shape in the circumferential direction of the column cutting beam 1 on the outer periphery of the end portion of the column cutting beam 1.

The end girder 2 is formed of a square steel pipe having the same diameter and the same cross-sectional shape as the column girder 1, and a connecting joint 2a is attached to the end of the end girder 2 on the girder flint connection piece 4 side. It is formed continuously in a beam shape in the circumferential direction of 2. Further, the flint beam 3 is formed of H-shaped steel, and the end portion of the flint beam 3 on the column cutting beam 1 side is interposed at the side portion of the cutting beam flint connecting piece 4 via the flint connecting piece 9, and is formed by a plurality of joining bolts 5. It is bolted.

The girder flint connection piece 4 is a column of a connection piece main body (hereinafter referred to as “connection piece main body”) 4a and a column of the connection piece main body 4a, which are made of a square steel pipe having the same diameter and the same cross-sectional shape as the column girder 1 and the end girder 2. It is provided with a column beam connecting joint 4b and an end beam connecting joint 4c formed at the end on the girder 1 side and the end on the end girder 2 side, respectively. Further, flint connection joints 4d and 4d are provided on both sides facing the flint connection piece 9.

The column beam connection joint 4b and the end beam connection joint 4c are continuously formed at the end of the connection piece main body 4a in a brim shape in the circumferential direction of the connection piece main body 4a.

Further, the flint connection joints 4d and 4d are formed on both upper and lower ends of the connection piece main body 4a so as to project substantially horizontally in the direction perpendicular to the axis of the connection piece main body 4a and continuously in the axial direction of the connection piece main body 4a. ing.

The flint connection joints 4d and 4d are welded and fixed with a strip-shaped plate on the upper and lower ends of the connection piece main body 4a with the edge of the strip-shaped plate protruding to the side of the connection piece main body 4a for a predetermined length. It is formed by the method (see FIG. 2).

Then, the column girder connection joint 4b and the column girder 1 connection joint 1a, the end girder connection joint 4b and the end girder 2 connection joint 2a are butted against each other, and bolted by a plurality of joint bolts 5. By doing so, the column cutting beam 1 and the end cutting beam 2 are joined to each other via the column cutting beam connecting piece 4.

Further, the ends of the left and right flint connection pieces 9 and 9 are inserted between the upper and lower flint connection joints 4d and 4d, respectively, and the upper and lower flint connection joints 4d and 4d and the flint connection piece 9 are bolted by a plurality of joint bolts 5. By doing so, the left and right flint beams 3 and 3 are joined to each other via the girder flint connection piece 4, and the left and right flint beams 3 and 3 and the column girder 1 and the end girder 2 are joined to each other via the girder flint connection piece 4. It is bolted.

When erection of these retaining members, first, the end cutting beam 2, the left and right flint beams 3, 3 and the cutting beam flint connection piece 4 are grounded on the ground. Next, the ground-assembled end beam 2, the left and right flint beams 3, 3 and the flint connection piece 4 are lifted by a heavy machine. Next, the end cutting beam 2 and the left and right flint beams 3 and 3 are erected on the 6th side and bolted to the side of 5 via the length adjusting member 7 and the flint receiving piece 8, respectively. Then, the end portion of the column beam 1 is joined to the beam flint connection piece 4.

By erection in this way, it is easy to raise the end of the column (square steel pipe) cutting beam 1 and join it to the end cutting beam 2 and the flint beam 3 and 3 via the cutting beam flint connection piece 4. Can be joined firmly and firmly.

3 (a) and 3 (b) are other embodiments of the present invention, wherein a beam flint joint structure configured so that the abdominal ridge 6 supporting the retaining wall can be supported by a longer flint span L. It is illustrated.

Explaining, at the end of each of the girders 1 and 1 erected at intervals in the material axis direction of the abdomen 6, the end girder 2 and the flint beam 3 are passed through the girder flint connection piece 4, respectively. It is bolted by a plurality of joining bolts 5.

The flint beam 3 is erected on the outside of each end cutting beam 2. Further, a connecting plate 10 is installed between the adjacent cutting beam flint connection pieces 4 and 4, and the adjacent column cutting beams 1 and 1 are bolted to each other via the connecting plate 10.

Further, the connecting plates 10 are installed in two upper and lower stages between the girder flint connection pieces 4 and 4, and both ends of each connecting plate 10 are connected to the flint connection joints 4d and 4d of the girder flint connection piece 4 with a plurality of joining bolts. It is bolted by 5. Other configurations are substantially the same as the configurations described in the embodiments of FIGS. 1 and 2.

According to this embodiment, the flint span L can be made longer than that of the embodiment of FIG. 1, and the abdominal ridge 6 that supports the retaining wall can be supported in a more stable state. Further, the flint span L can be further lengthened by increasing the number of column cutting beams 1 to 3 or more.

The present invention is to easily and firmly join each end of a column (square steel pipe) beam to each end of the end beam and the flint beam, which are joined by raising the ends of the column (square steel pipe) girder, via a girder flint connection piece. Can be done.

1 Column girder 2 End girder 3 Flint beam 4 Giraffe flint connection piece
4a Connection piece body (Beam flint connection piece body)
4b End beam connection joint
4c Column beam connection joint
4d flint connection joint 5 joint bolt 6 raised abdomen 7 length adjusting material 8 flint receiving piece 9 flint connection piece
10 Connecting plate

Claims (4)

The column girder, the end girder joined to the abdomen, and the ends of the flint beam arranged on the side of the end girder and joined to the abdomen are connected to each other by the girder flint connection. In the girder flint connection structure connected via the pieces, the girder flint connection piece is a girder flint connection piece body arranged between the end girder and the column girder and the girder flint connection. The end girder connection joint and the column girder connection joint provided at the end girder side and the column girder side end of the piece body, respectively, and the girder flint connection piece main body side portion provided. The beam flint connection piece main body is formed in a box-shaped cross section having the same diameter and the same cross section as the end beam and the column beam. The column girder connection joint is provided in a flange shape on the outer periphery of the end portion of the girder flint connection piece main body, and the flint connection joint is attached to the edge end portion of the girder flint connection piece main body. It is continuously provided in a strip shape in the axial direction and is provided so as to project substantially horizontally in the direction perpendicular to the axis of the beam flint connection piece body, and is connected to the end of the flint beam at a portion of the flint connection joint that projects substantially horizontally. A beam flint connection structure characterized in that the ends of the flint connection pieces are overlapped and joined by a plurality of joining bolts. In the girder flint connection structure according to claim 1, the girder flint connection piece main body is formed of a square steel pipe having the same diameter and the same cross section as the end girder and the column girder. Beam flint connection structure. In the girder flint connection structure according to claim 1 or 2, the column girder and the end girder are arranged at intervals in the material axis direction of the abdomen, respectively, and the girder flint connection piece is provided. A beam flint connection structure characterized by being connected by a beam and having a connecting plate arranged between the beam flint connection pieces. A column beam, an end beam joined to the abdomen, and a girder flint that joins the ends of the flint beam arranged on the side of the end girder and joined to the abdomen. A connecting piece, which is a girder flint connection piece main body installed between the end girder and the column girder, and the end girder side and the column girder side end of the girder flint connection piece main body. The beam flint connection piece main body is provided with an end girder connection joint and a column girder connection joint provided in each portion and a flint connection joint provided on a side portion of the girder flint connection piece main body. The end beam and the column beam are formed in a box-shaped cross section having the same diameter and the same cross section as the column beam, and the end beam connection joint and the column beam connection joint are end portions of the beam flint connection piece main body. The flint connection joint is provided on the outer periphery in a flange shape, and the flint connection joint is continuously connected to the edge of the flint connection piece body in a strip shape in the axial direction of the flint connection piece body, and the flint connection piece body is connected. A bolt hole of a joining bolt that is provided so as to project substantially horizontally in the direction perpendicular to the axis of the flint beam and joins the end portion of the flint connection piece connected to the end portion of the flint beam to the portion of the flint connection joint that projects substantially horizontally. However, a plurality of beam flint connection pieces are provided at intervals in the axial direction of the beam flint connection piece main body .

Images