JPS5931845Y2 - pipe column - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pipe column used for bridge piers, earth retaining piles, steel pipe trusses, etc.

Conventionally, as a column with a large bending strength in a certain direction,
An assembled column in which two steel pipes 1, 1 are connected by many steel pipes 2 as shown in Fig. 1, or two steel pipes 3, 3 as shown in Fig. 2.
It was very troublesome to assemble the assembly column, etc., which were connected by a single steel plate 4.

Furthermore, in the case of a column using conventional steel pipes 5 as shown in Fig. 3, in order to connect the first pipe 5 and the beams 6, 6, the ends of the beams 6°6 must be processed into arcuate surfaces. However, this processing was very troublesome, and it was not easy to weld the steel pipe 5 and the beam 6.6.

Furthermore, it was necessary to provide a reinforcing plate 7 at the joint between the steel pipe 5 and the beams 6, 6 in order to prevent a decrease in strength due to the deformation of the man-horse portion.

In addition, in the steel pipe truss using the conventional steel pipe 8 as the main pipe as shown in Fig. 4, in order to connect the steel pipe 8 and the branch pipes 9, 9, 9, 9, The part must be machined into an arc shape, and this process is very troublesome.
Further, welding between the steel pipe 8 and the branch pipes 9, 9°9.9 could not be easily performed.

In view of the above points, the present invention has a large bending strength in a certain direction, and can easily connect other members such as beams to the outer surface.
Therefore, it is an object of the present invention to provide a tube column that can be effectively used for multiple purposes, and one embodiment thereof will be described below with reference to the drawings.

In FIG. 5, reference numeral 10 denotes a tube, and the inner surface of the tube 10 is formed into a circular arc surface 11, and the outer surface has circular arc surfaces 12 concentric with the inner surface formed at two locations in the diametrical direction.
．． 13, flat surfaces 14.15 formed at two locations in the diametrical direction orthogonal to the diametrical direction; Two pairs of planes 16a, 16b and 17a are formed so as to gradually widen as they approach each other.

17b.

Further, this tubular body 10 has a diameter of the inner surface d, a distance between the tops of the circumferential arc surfaces 12 and 13 Dx, and a circumferential plane 14.
The distance between the planes 14.15 and 15 is Dy, the width of the plane 14.15 is t, the inner thickness of the arcuate surface 12.13 is tx, and the #-marked plane 14.
If the minimum thickness of the 15th part is ty, then t=0.5D x
It is formed by centrifugal casting so that the following relationship holds: ~0.8D x Dy=Dx ~1.3Dx tX<ty.

Since the wall thickness of the planes 14 and 15 is thick as described above, it has a large bending strength in the direction orthogonal to the planes 14 and 15, and therefore, this tube body 10 can be used in place of the assembly column.

By using the tubular body 10 having the above configuration as an assembly column, troublesome processing and assembly can be omitted, and therefore manufacturing costs can be reduced.

FIG. 6 shows an example in which the tubular body 10 is used as a pillar, and the ends of the beams 18.18 are connected to the plane 14.15, so that
The ends of the beams 18, 18 need only be processed into flat surfaces, so processing is extremely easy, and the tube body 10 and the beam 1
Since welding to the beam 18.18 can be easily performed, the time required for joining the pipe body 10 and the beam 18.18 can be significantly shortened.

Further, since the tube body 10 has a large bending strength in the direction perpendicular to the plane 14.degree.
The time required for the joining operation with 8 can be further shortened.

FIG. 7 shows an example in which the pipe body 10 is used as the main pipe of a steel pipe truss.
Since the ends of 9 and 19, 19 are connected, the branch pipe 19,
The ends of the tubes 19, 19, 19 can be simply machined into flat shapes, and therefore are extremely easy to process.
Since the welding between the pipe body 10 and the branch pipes 19, 19, 19, 19 can be easily performed, the time required for joining the pipe body 10 and the branch pipes 19, 19, 19, 19 can be significantly shortened.

Further, since the tube body 10 has a large bending strength in a direction perpendicular to the planes 14 and 15, the strength of the entire truss is increased.

In the above embodiment, the diameter direction 2 of the outer surface of the tube body 10 is
Although an example has been described in which the flat surface 14.15 is formed at one location in the diametrical direction, for example, the flat surface 25 is formed at one location in the diametrical direction on the outer surface of the main pipe body 24 of a steel pipe truss from which a branch pipe extends from one location in the diametrical direction.
Branch pipes 26, 26 may be connected to this plane 25.

As explained above, according to the tube column according to the present invention, the outer surface of the tube whose inner surface is formed into a cylindrical surface has an arcuate surface concentric with the inner surface and a radius of the arcuate surface over the entire length in the tube axis direction. at least one plane located at a distance equal to or greater than the distance from the tube axis, and a pair extending from both ends of the plane and connected to the arcuate surface and gradually expanding from each other as the arcuate surface approaches the arcuate surface. Since it consists of a plane of (equivalent to tx in Fig. 5) and has a cross-sectional shape in which these planes and the circular arc surface are connected by a pair of planes, so that a beam, filler, lattice material, etc. can be attached to the plane at least in one place. The bending strength can be significantly increased against the forces acting under the condition, and therefore a significant improvement in strength can be achieved.

Furthermore, beams, filling materials, lattice materials, etc. can be easily attached to any position in the axial direction of the pipe, dramatically increasing the flexibility of assembly when used as columns, etc., and thus making it versatile. can be used effectively.

[Brief explanation of drawings]

Figure 1A is a front view showing an example of a conventional assembly column, Figure B is a cross-sectional view of the same, Figure 2A is a front view showing another example of a conventional assembly column, and Figure B is a cross-section of the same. Figure 3A is a front view showing the joint between a conventional column and beam, Figure B is a plan view of the same, and Figure 4A is a front view showing the joint between the main pipe and branch pipe of a conventional steel pipe truss. Figures 5 to 8 show embodiments of the present invention, Figure 5 is a cross-sectional view thereof, and Figure 6 A shows the pipe column according to the present invention as a column. Front view showing an example of use, Figure B
is a plan view of the same, FIG. 7A is a front view showing an example in which the pipe column according to the present invention is used as the main pipe of a steel pipe truss, FIG. 7B is a longitudinal side view of the same, and FIG. 8A is another modification of the pipe column. A front view showing an example, and Figure B is a longitudinal side view of the same. 10.24... Tube body, 11... Cylindrical surface, 12° 13... Arc surface, 14, 15, 25.
...plane, 16 a, 16 b, 17
a, 17 b=−・−・Pair of planes.

Claims (1)

[Scope of utility model registration request] The outer surface of the tube whose inner surface is formed into a cylindrical surface is located over the entire length in the tube axis direction from an arcuate surface concentric with the inner surface at a distance equal to or greater than the radius of the arcuate surface from the tube axis. A pipe column comprising at least one flat surface and a pair of flat surfaces that extend from both ends of the flat surface, connect to the arcuate surface, and gradually widen from each other as they approach the arcuate surface.