JP2893548B2 - Materials for structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to the creation of a material for a structure, which is relatively lightweight, can obtain appropriate strength and straightness as a beam or a column, and has an internal structure. It is an object of the present invention to provide a structural material that is advantageous in use and easy to manufacture.

(Industrial applications) Materials for use in various above-ground or underground or underwater structures.

(Prior Art) It is well known that beams, girders or columns are required to obtain structures above ground or underground or underwater. These materials include solid bars,
A wide variety of materials such as a mold material, a pipe material, a lattice material, and a square material are used.

Examples of the material include steel, stainless steel, aluminum alloy, wood, concrete, vinyl chloride and other synthetic resin materials, and composite materials thereof.

Further, some proposals have been made for making various structures themselves such as large steel pipes or square pipes.

(Problems to be Solved by the Invention) It is indispensable to obtain a required strength in the above-mentioned conventional structural material, and in order to obtain this strength, it is necessary to increase the thickness or thickness. Requested. However, those having a large thickness or diameter inevitably require a large amount of steel and the like, and also have a large weight.

In addition, as described above, when a heavy material is used as a beam material or a girder material, the middle part is bent, so that it is necessary to arrange a column or the like in the middle. Therefore, it is necessary to use a support material or a cross member, and the structure of the structure is complicated and a large amount of material is required. Particularly, in recent large structures, even if a long material is used, the structure is complicated because of this, and it is not easy to obtain a structure having a huge space with a simple configuration.

"Structure of the Invention" (Means for Solving the Problems) The present invention has been conceived and devised in order to solve the problems in the above-described conventional devices, and is as follows.

A structural material, wherein a plate material forming a polygonal shape is disposed inside a circular outer peripheral member along the axial direction of the outer peripheral member by welding, and an opening is formed in the plate material.

(Operation) By using the circular outer peripheral member, a material having no strength or directionality in use can be obtained.

By disposing the plate material in a polygonal shape inside the circular outer peripheral member along the axial direction of the outer peripheral member, an edge portion of each plate material attached by welding or the like acts as a vertical streak, and Since the material itself also has a reinforcing effect, a preferable strength or linearity can be obtained with a relatively small amount of steel material. That is, since the material amount is small, it is lightweight, and since the linearity and strength are obtained as described above, preferable linearity is secured for a long beam material or the like.

The welding of the edges of each sheet material to the inside of the circular outer peripheral member by welding etc. can be performed accurately by an automatic welding machine etc. using the boundary ridge part between the sheet materials or the boundary part between the curved surface and the flat surface of the sheet material as a guide, large steel pipe etc. In this case, it is possible to work by appropriately entering workability and the like, and the work is generally performed easily by automatic welding. In some cases, it may be plug-welded from the outside of the circular outer peripheral member to the abutting portion of the plate material in a point-like manner.

By forming the openings in the plate material arranged as described above, the weight of the plate material itself can be reduced, and a lattice structure or the like can be formed in the remaining portion of the plate material, thereby ensuring the reinforcing effect. The opening communicates the space between the plate member and the circular outer peripheral member to the inside.

(Embodiment) A specific embodiment of the present invention as described above will be described. As shown in FIGS. 1 and 2, a circular outer peripheral member 1 is provided inside and along the axial direction of the outer peripheral body 1. The plate members 2, 2, 2,... Are arranged in a polygonal shape, and the plate members 2 or the outer peripheral body 1 and each of the plate members 2 are attached to each other by the welding portion 3 or the plug welding 3a. Those having an inner diameter of several thousand mm can be appropriately adopted.

When welding between the circular outer peripheral member 1 and the outer surface of the plate member 2 is disadvantageous in terms of man-hours or work operation as shown in FIG. 1, a groove is formed at the edge as shown in FIG. 6 (A). The plate materials 2 and 2 are set and 1
The two plate materials 2 and 2 and the outer peripheral member 1 can be joined by the third welding 3. This may be performed only once when plug welding 3a is performed as shown in FIG. 6 (B).

Each plate 2 attached as described above has 1 in FIG.
The openings 4 are formed as shown in the example, and the remaining portions 5 between the openings 4,4,4,4 are connected on both sides of the plate material 2 and the inclined portions are formed.
5a, 5a are formed symmetrically to form a lattice-like structure,
The weight of the plate material 2 itself is reduced while maintaining the supporting and reinforcing performance for the outer peripheral member 1.

The outer peripheral body 1 is generally a circular shape, but may be an elliptical shape or an elliptical shape in some cases, and the true circular shape has no directionality in strength and other characteristics. Even if they are elliptical or elliptical, those having a major axis of 1.5 times or less the minor axis have less directional characteristics. Further, as the outer peripheral body, in addition to a steel pipe of the UOE method, a pipe manufactured by an arbitrary pipe forming method such as an electric resistance welded steel pipe and a spiral steel pipe can be widely used. When the material according to the present invention is used as a column material, it is natural that a tapered tube obtained by high-frequency resistance welding may be used as the outer peripheral body 1, and in this case, each of the above-mentioned plate materials has a trapezoidal shape. Is adopted. Such a tapered tube has a small diameter at the distal end side and is light in weight, and is less likely to bend despite its length.

Although each plate 2 may be a cast material, it is clear that a rolling method is preferred in the present invention for the purpose of weight reduction and strength, and in any case, the plate 4 has an opening 4. 3 and 4 are used, and the shape of each opening 4 is
In addition to the right-angled triangular shape as shown in the figure, a circular shape as shown in FIG. 4 may be used, and these may be appropriately combined and employed. It is assumed that the connecting portion remains between the two side edges. The mounting relationship of each plate member 2 to the outer peripheral body 1 may be rectangular, as shown in FIG. 1, or square, triangular, pentagonal, hexagonal or octagonal as shown in FIG. In any case, the fact that the welded portion of the plate material functions as a vertical streak with respect to the circular outer peripheral member 1 is, as described above, an increase in the number of polygonal corners. I do.

Attachment of each plate member 2 to the circular outer peripheral body 1 is performed at the welded portion 3
The welding 3 is performed by setting the plate material 2 in the outer peripheral body 1 in the case of a relatively small diameter, and then making an automatic welding machine or the like enter the outer peripheral body 1 to perform a welding ridge line between the plate materials. It is possible to accurately follow the joint boundary line between the outer peripheral body 1 forming a part or a curved surface and the plate material 2 as a flat surface. However, the plug welding 3a can be formed at appropriate intervals from the outside at the butted portion of the plate member 2 and the joint portion with the outer peripheral body 1. In the case of employing a large-diameter outer peripheral body 1 having an inner diameter exceeding 2 m, the operator appropriately enters the outer peripheral body 1 and performs the operation. Since the body 1 acts as a single welding jig, the whole body can be appropriately rotated, and it can be carried out by downward welding, which is the welding position that is the easiest to work in forming any portion of the welded portion 3. Since no upward welding is required, welding can be performed easily.

As described above, the respective plate members 2 attached at the welded portions 3 have their side edges abutting at the welded portions 3 and are fixed at the welded portions 3, so that the length direction of the plate member 2 with respect to the circular outer peripheral body 1 is As described above, the outer peripheral body 1 acts on the outer peripheral body 1 in a circumferential direction when an external pressure acts on the outer peripheral body 1. Can be sufficiently reduced.
For example, when the present invention is designed as a large-diameter steel pipe having an inner diameter of 250 cm or more, and the inside is adopted as an underground structure that can be used as a warehouse or a residential area, if the steel pipe is simply adopted, the thickness is 20 mm or We need more, which adds significant weight and
Regardless of the UOE method or the spiral tube forming method, the pipe forming equipment is significantly increased in size, and the processing energy for performing the forming operation is increased. On the other hand, in the present invention, as described above, a vertical streak effect is obtained at the welded portions 3 and 3a, and deformation due to external pressure and the like is restrained, and a reinforcing effect is obtained by the respective plate members 2, 2, 2, 2. Generally 10 things
mm or less, especially 8 mm or less, which greatly simplifies and facilitates the pipe-forming equipment or the pipe-forming work and reduces the overall weight of the material, and this relationship is the same even for relatively small diameters. This leads to lower material costs. Moreover, since the plate members 2 and 2 prevent bending and other deformations, the straightness can be ensured even for a long beam or column, in combination with the above-mentioned light weight.

In the case where the plate member 2 provided with the openings is attached as described above, when it is used as a column member or the like, the inside thereof can be appropriately filled with concrete or the like, thereby improving the bonding property with the filled concrete. In addition, the filling area of concrete is partitioned by the plate material 2, and the inside is filled with various pipes,
It can be used as an insertion area for wiring and the like. When used as a relatively large diameter underground or underwater structure, the space between the plate member 2 and the outer peripheral body 1 is used as an area for inserting these pipes or wires or a storage area for tools and equipment. Between the plate members 2, 2, 2, 2 are used as living quarters and passages.

The material according to the present invention is typically a steel material, but can be embodied by a stainless material, an aluminum material, a synthetic resin material, or the like.

[Effect of the Invention] According to the present invention as described above, strength and other characteristics having no directivity can be obtained, and the material weight for forming a structure can be reduced, and the straightness can be appropriately secured. Therefore, the present invention is industrially effective because it can form various structures.

[Brief description of the drawings]

The drawings show the technical contents of the present invention. FIG. 1 is an end view of a structural material according to the present invention, FIG. 2 is a partially cutaway side view thereof, and FIG. FIG. 4 is a partial front view of another embodiment of the present invention, FIG. 5 is an end view similar to FIG. 1 showing another embodiment of the present invention, and FIG. FIG. 6 is a partial end view of a plate welding portion with respect to the circular outer peripheral member. However, in these drawings, 1 is a circular outer peripheral member, 2 is a plate material, 3 is a welded portion, 4 is an opening, 5 is a remaining portion, and 5a is an inclined portion.

Claims (1)

(57) [Claims] 1. A structure for a structure, wherein a plate material forming a polygonal shape is disposed inside a circular outer peripheral member along an axial direction of the outer peripheral member by welding and an opening is formed in the plate material. Material.