JP2585477B2 - T-type steel pier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a T-shaped steel pier.

[0002]

2. Description of the Related Art Conventional T-shaped steel piers include those shown in FIGS. In the pier of FIG. 8, the beam tip 4 is connected on the site to the left and right of the center pillar 2. In the pier of FIG. 9, the pillar 6 is formed in a Y-shape, and the beam 8 is mounted thereon and fixed.

[0003]

However, the conventional T-shaped steel pier has the following problems. In the pier of FIG. 8, a field joint 10 must be provided, and a high-tensile bolt is usually used. However, in the case of field welding, as shown in FIG. Therefore, by performing high-tensile bolt fastening and on-site welding, the on-site work is lengthened. Further, when a steel pipe is used for the pillar, the diameter (d) of the steel pipe must be larger than the beam width (b) due to the structure, and it is not necessarily economical. In addition, manholes, handholes 14 etc. are also required for enforcement,
Neither the beam nor the column is completely closed. Therefore, interior painting is also required.

In the pier of FIG. 9, the necessity of a field joint is not recognized in some cases. Further, when a steel pipe is used for the pillar portion, there is a problem that an advanced manufacturing technique is required at the intersection of the Y-shaped portions and the stress distribution is not clear.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a T-type steel pier which eliminates the necessity of field joints for beams, simplifies the structures of beams and columns, and eliminates the need for painting inside beams and columns.

[0006]

The above object is achieved according to the present invention by providing a T-type steel pier having the following means. A T-shaped beam having a short beam portion and a pillar, and a length longer than the T-shaped beam portion mounted on the T-shaped beam portion and fastened to the T-shaped beam portion Long main beam.

[0007]

Since the T-shaped beam having a short beam portion and the main beam are manufactured separately, the necessity of a field joint is eliminated as long as each can be transported. For this reason, it is possible to have a closed structure, and it becomes unnecessary to paint the inside of the beam and the pillar.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a T-shaped steel pier according to the present invention will be described below with reference to FIGS. As shown in FIG. 1, a T-shaped steel pier 20 includes a T-shaped beam 22 and a main beam 24.
Consisting of The T-shaped beam 22 includes a beam portion 26 having a short beam length and a pillar 28. The beam 26 and the pillar 28 are orthogonal to each other, are rigidly connected to each other, and form a T-shape. The main beam 24 is longer than the beam portion 26 of the T-shaped beam 22, is mounted on the beam portion 26, and is fastened to the beam portion 26.

FIGS. 2 and 3 show a T-shaped beam 22 and a main beam 2.
4 shows a structure of a connection portion with the fourth member. The main beam 24 is composed of a beam having a rectangular cross section in which an upper plate 30 and a lower plate 32 are connected by a web 34, and the web 34 is reinforced by ribs 36. The ends of the upper plate 30 and the lower plate 32 project from the web to form a flange 38.

Similarly, the beam portion 26 of the T-shaped beam 22 is also composed of a beam having a rectangular cross section in which an upper plate 40 and a lower plate 42 are connected by a web 44, and the web 44 is reinforced by ribs 46. The ends of the upper plate 40 and the lower plate 42 protrude from the web 44 and form a flange 48.

The flange 3 of the lower plate 32 of the main beam 24
8 and the flange 48 of the upper plate 40 of the beam portion 26 of the T-shaped beam 22 are tightened by bolts 54 via two sole plates 50, 50 and a hard rubber 52 sandwiched between the sole plates 50, 50. You.

FIG. 4 and FIG. 5 show another embodiment of the present invention which is used when an upward lift acts on a support portion of a receiving beam due to an uneven loading of an upper working load. In the example of FIGS. 4 and 5, a rib is welded to a portion of the main beam 24 in the vertical direction of the web 34 to form a flange 56.
A rib is also welded to a portion of the beam portion 26 of the mold beam 22 in the vertical direction of the web 44 to form a flange 58. Then, over both flanges 56 and 58, the long PC steel rod 6
0, the pretension is introduced and both beams 22, 24
To join. Other configurations are the same as those shown in FIGS. 2 and 3, and the same members are denoted by the same reference numerals and description thereof is omitted.

FIGS. 6 and 7 show a horizontal load receiving structure which can be used in parallel with a bolt or a PC steel bar when the bolt or the PC steel bar alone cannot sufficiently resist horizontal force due to an earthquake, wind, or the like. ing. 1 is provided between the main beam 24 and the beam portion 26 of the T-shaped beam 22 in FIG.
That is, the ring 62 is welded to one of the main beam 24 and the beam portion 26 of the T-shaped beam, the boss 64 is welded to the other, and the boss 64 is fitted into the ring 62 to reduce the horizontal force. The boss 64 and the ring 62 receive the boss.

Next, the operation will be described. The T-beam 22 and main beam 24 are factory built as long as they can be transported and have no field joints. In the construction, first, the T-shaped beam 22 is erected at the site, the main beam 24 is placed on the T-shaped beam 22, and the two are fastened with the bolt 54. The fastening is performed by tightening the flanges 38 and 48 with bolts 54 in the examples of FIGS. 2 and 3, and the flanges 56 and 58 in the examples of FIGS.
By tightening with a PC steel bar 60. Since it is fastened by a flange, there is no need to provide manholes or hand holes in the beam.

[0015]

According to the present invention, the following various effects can be obtained. I. Since the beam is divided into a short T-beam and a main beam, it is possible to make a factory and eliminate the necessity of a beam joint at the site. This simplifies the structure and shortens the construction period on site. B. Due to the simplification of the structure and the flange connection, it is not necessary to provide manholes and handholes in the beam, so that the beam can be sealed. C. When a steel pipe is used for the pillar by changing the distance between the main beam and the receiving plate, it is structurally possible even if the steel pipe diameter is smaller than the main beam width. D. It is more advantageous in terms of erection than the conventional T-beam of FIG.
Rapid construction is possible. Further, as compared with the Y-shaped pillar shown in FIG. 9, it is easier to manufacture and does not require advanced manufacturing techniques. E. The rigidity is also increased at the corners due to the effect of the overlapping beams.

[Brief description of the drawings]

FIG. 1 is a front view of a T-type steel pier according to one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken along line BB of FIG. 2;

FIG. 4 is a sectional view of a T-type steel pier according to another embodiment of the present invention, corresponding to the line AA in FIG. 1;

FIG. 5 is a view taken along line CC of FIG. 4;

FIG. 6 is a plan view of a horizontal load receiving structure used for a part of FIG.

FIG. 7 is a front view of the horizontal load receiving structure of FIG. 6;

FIG. 8 is a front view of a conventional T-shaped steel pier.

FIG. 9 is a front view of another conventional T-shaped steel pier.

FIG. 10 is a front view of a conventional T-shaped steel pier when a beam is welded on site using a shoring.

[Explanation of symbols]

 Reference Signs List 20 T-shaped steel pier 22 T-shaped beam 24 Main beam 26 Beam 28 Pillar

Claims (1)

(57) [Claims] 1. A T-shaped beam having a short beam portion and a pillar, and the T-shaped beam placed on the beam portion of the T-shaped beam and fastened to the beam portion of the T-shaped beam. A pier made of T-shaped steel, comprising: a main beam having a length longer than that of the beam.