JPS63315754A - Rolled h-steel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a rolled H-section steel having a novel configuration.

(Conventional technology) Among the ■1 section steels that have traditionally been used in the construction field, etc., there is rolled IIH section welded IIH section steel, and the dimensions and shape of conventional rolled H section steels depend on the relationship with the rolls, etc. during production. As shown in FIG. 2, the inner dimension between the pair of flanges 2.2 of the rolled IH section steel is constant, and when the plate thickness of the flange 2 changes, the flange 2. It is manufactured so that the outer four dimensions 11 between .2 and 2 are varied.

(Problems to be solved by the invention) However, in the field of construction etc., such rolling II
When H-shaped steel is used, the effective dimension in each building part changes as the dimension 11 in iri changes due to changes in plate thickness. The design plan had to be done in advance, which resulted in the problem of waste in various parts.

That is, for example, as shown in FIG.
When a section steel is used as a beam, the effective ceiling height D is determined by the one with the largest outer four dimensions II a among the 11 rolled sections.
Although the effective ceiling height can be further ensured in the beam section having b, it is restricted by the effective ceiling height D of the section II section having the four outer dimensions 11a, so there is no waste in the ceiling beam dimensions. Moreover, in order to maintain the effective ceiling height D at a predetermined value, the floor height T must be increased, resulting in an uneconomical design.

In addition, when rolled 11 section steel 1 is used as a column as shown in Fig. 4, the effective span S between the columns is determined by the column having the maximum outer dimension II This also results in waste.

On the other hand, this problem does not occur when using - Recruitment was difficult.

The present invention aims to solve these conventional problems by providing a rolled 11 section steel having a novel configuration.

(Means for Solving the Problems) In order to achieve the above object, in the rolled 1-1 section steel according to the present invention, the outer four dimensions between the pair of flanges are kept constant, and the change in plate thickness of the flanges is The present invention is characterized in that this is handled by changing the internal dimensions between the flanges.

(Example) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows one embodiment of the present invention, and a rolled II section 10 according to the present embodiment has a pair of flanges 11 and 11.
The outer four dimensions 1 (in between) are always constant regardless of the thickness of the flange I+.

However, for changes in the thickness of the flange I+,
This is accommodated by varying the internal dimensions between the flanges 11.11.

That is, as shown in FIGS. 1(a) and 1(b), when the plate thickness of the flange 11 changes from 1 to 2, the four outer dimensions 11 remain constant, and the inner dimensions h a to hb
It was designed to change it to .

Therefore, if the rolled Il section steel 10 according to this embodiment is used, since the outer four dimensions I+ of each 11 section steel IO are always constant, there will be no waste as in the conventional example mentioned above, and construction The effective span when used for columns or the effective beam bottom dimension when used for beams becomes constant, allowing for rational and economical design.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various modifications can be made without departing from the gist of the present invention.

(Effects of the Invention) The present invention is constructed as described above, with the four outer dimensions between the flanges of a pair of rolled II section steel being constant, and the inner dimensions between the flanges changing as the plate thickness of the flanges changes. This is achieved by keeping the effective span and effective beam bottom dimension constant, which eliminates waste in architectural planning.

[Brief explanation of the drawing]

FIG. 1(a) and FIG. 1(b) show rolling II according to the present invention.
An explanatory diagram showing an example of a section steel, Fig. 2 is a conventional rolling 11
3 and 4 are explanatory diagrams showing conventional construction examples, respectively. 10...Rolled II section steel, 11...Flange, +
+...Outer 4 dimensions 5h...Inner dimensions...
Plate thickness. Figure 1 (a) (b) Figure 2

Claims (1)

[Claims] A rolled H-beam steel characterized in that the outer dimensions between a pair of flanges are constant, and changes in the plate thickness of the flanges are responded to by changing the inner dimensions between the flanges.