JPH08189122A - Adjusting method of floor level of steel frame building - Google Patents

Abstract

PURPOSE: To reduce the construction cost, by welding a reverse U-shaped steel plate provided with X-shaped slits to the upper face of a H-steel frame beam and laying a corrugated steel plate between reverse U-shaped steel plates and placing floor slab concrete. CONSTITUTION: Both side legs of a reverse U-shaped steel plate 1 provided with a plurality of X-shaped slits at the upper face are welded with the upper face of a H-steel frame beam 2. A corrugated steel plate 3 is laid between the H-steel frame beams 2. The X-shaped slits of the upper face of the reverse U-shaped steel plate 1 are pulled up and reinforcements for the floor slab are arranged on the corrugated steel plate 3 to place floor slab concrete 4. The floor slab concrete 4 passes through the holes of the X-shaped slits 6B pulled up and flows in the inside of the reverse U-shaped steel plate 1 to fill it. Accordingly, the labors for welding are minimized and materials used are lessened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor level adjusting method when a step is provided in the floor level between spans in a steel structure.

[0002]

2. Description of the Related Art In a steel-framed building, when steps are provided at the floor level between spans, it is common to construct an H-shaped steel beam so as to have steps corresponding to the steps. However, this method requires too much welding work to manufacture the joint fittings. Therefore, as an alternative method, the H-type steel beam is installed at the same level, and in the span where the floor level is increased, the H-type steel beam and the floor are used. A method of interposing a steel material with the slab concrete is adopted. As shown in FIG. 2, the method is to weld T-shaped steel 8 using rib steel plate 9 as a stiffening material to the upper surface of H-shaped steel beam 2, and then weld headed stud bolt 10 to the upper surface of T-shaped steel 8. , A method for constructing a floor slab by laying a corrugated steel plate 3 above the T-shaped steel 8, arranging floor slab reinforcement, and placing a floor slab concrete 4.

[0003]

In the conventional floor level adjusting method, not only a great amount of labor is required for welding each member, but also a heavy material such as T-shaped steel is required, so that the construction cost is increased. The result is connected to.

[0004]

The present invention follows the conventional method in that the steel material is interposed between the H-shaped steel beam and the floor slab concrete, but the type and shape of the steel material to be used are used. The purpose of this is to reduce the labor of welding as much as possible, to reduce the weight of the material used, and consequently to reduce the construction cost.

That is, according to the present invention, the legs on both sides of an inverted U-shaped bent steel sheet having a plurality of X-shaped slits formed on the upper surface are welded to the upper surface of the H-shaped steel beam, and corrugated steel sheets are provided between the inverted U-shaped bent steel sheets. Laying
A steel-framed building characterized by forming an X-shaped slit on the upper surface of the inverted U-shaped bent steel plate to form a triangular projection, and then arranging floor slabs above it and placing floor slab concrete This is the floor level adjustment method.

The point of the present invention is to use an inverted U-shaped bent steel plate having a plurality of X-shaped slits on the upper surface as a steel material to be interposed between the H-shaped steel beam and the floor slab concrete.

The use of this inverted U-shaped bent steel plate improves the following points of the conventional method.

(1) Since the floor slab concrete is filled inside the reverse U-shaped bent steel plate, the reverse U-shaped bent steel plate should have strength and rigidity sufficient to withstand the pouring pressure of concrete, The thickness can be reduced, and the weight is much lighter than the use of T-section steel.

(2) Since the triangular projection that causes the X-shaped slit on the upper surface of the inverted U-shaped bent steel plate has the same function as the headed stud bolt, the trouble of causing the X-shaped slit is newly generated. However, there is no need to weld the headed stud bolt. (The work that causes the newly generated X-shaped slit can be easily performed within a short time by using a dedicated jig.) (3) The welding points are the legs on both sides of the inverted U-shaped bent steel plate and the upper surface of the H-shaped steel beam. Since it is only the contact portion, welding time is greatly reduced compared to welding of T-shaped steel to H-shaped steel beam and rib steel plate to T-shaped steel and H-shaped steel beam.

As a result of synthesizing these improvements, the labor for construction is reduced, the material used is lighter, and the construction cost is reduced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the construction procedure with reference to the drawings showing the embodiments of the present invention.

FIG. 1 (a) is a longitudinal sectional view of a floor constructed by adopting the present invention, FIG. 1 (b) is a view taken in the direction of arrow B of FIG. 1 (a), and FIG.
FIG. 1C is a view taken in the direction of arrow C in FIG. 1B, and FIG. 1D is a perspective view of an inverted U-shaped bent steel plate used in the present invention.

Description will be given according to the construction procedure.

(1) First, an inverted U-shaped bent steel plate 1 having a predetermined size and having a plurality of X-shaped slits provided on the upper surface thereof is prepared. (Fig. 1 (d)) X-shaped slit is not caused at this point 6A
It is a state of.

The legs on both sides of the inverted U-shaped bent steel plate 1 in this state are welded to the upper surface of the H-shaped steel beam 2. (FIG. 1 (d)) (2) Using the H-shaped steel beam 2 to which the reverse U-shaped bent steel plate 1 is welded, a steel-framed frame is assembled with other H-shaped steel beams and steel columns.

[0016] The welding of the inverted U-shaped bent steel plate 1 to the H-shaped steel beam 2 is usually performed as a factory work or a ground work before assembling the skeleton as described above. It may be done as work.

(3) A corrugated steel plate 3 is laid between the H-shaped steel frame beams 2. (FIGS. 1 (a) to 1 (c)) (4) An X-shaped slit is formed on the upper surface of the inverted U-shaped bent steel plate 1 to change the state from 6A to 6B. (Fig. 1 (b)
(D)) (5) Floor slab reinforcement is arranged on the corrugated steel plate 3 and the floor slab concrete 4 is poured. (Figs. 1 (a), (b)) The cast floor slab concrete 4 was raised X
It flows into the inside of the inverted U-shaped bent steel plate 1 through the hole of the character slit 6B to fill the inside.

Incidentally, in FIG. 1 (a), in order to clarify the difference in floor level from the adjacent span, the adjacent span to which the present invention is not applied is also shown.

[0019]

Since the present invention is configured as described above, it has the following effects.

(1) Since the floor slab concrete is filled inside the reverse U-shaped bent steel plate, the reverse U-shaped bent steel plate should have strength and rigidity sufficient to withstand the pouring pressure of concrete, The thickness can be reduced, and the weight is much lighter than the use of T-section steel.

(2) Since the triangular projection that causes the X-shaped slit on the upper surface of the inverted U-shaped bent steel plate has the same function as that of the headed stud bolt, the trouble of causing the X-shaped slit is newly generated. However, there is no need to weld the headed stud bolt. (The work that causes the newly generated X-shaped slit can be easily performed within a short time by using a dedicated jig.) (3) The welding points are the legs on both sides of the inverted U-shaped bent steel plate and the upper surface of the H-shaped steel beam. Since it is only the contact portion, welding time is greatly reduced as compared with welding of T-shaped steel to H-shaped steel beam and rib steel plate to T-shaped steel and H-shaped steel beam.

As a result of synthesizing these improvements, the labor for construction is reduced, the material used is lightweight, and the construction cost is reduced.

[Brief description of drawings]

1A is a vertical cross-sectional view of a floor constructed by adopting the present invention, FIG. 1B is a view taken along arrow B of FIG. 1A, FIG. 1C is a view taken along arrow C of FIG. [Fig. 4] is a perspective view of an inverted U-shaped bent steel plate used in the present invention.

2A and 2B show a floor constructed by a conventional floor level adjusting method, in which FIG. 2A is a vertical sectional view and FIG.

[Explanation of symbols]

1- ・ Reverse U-shaped bent steel plate 2 ・ ・ H-shaped steel beam 3 ・ ・ Corrugated steel plate 4 ・ ・ Floor slab concrete 5 ・ ・ Molding fittings,
6A ・ ・ X-shaped slit which is not raised, 6B ・ ・ X-shaped slit which is raised, 7A ・ ・ Upper pillar, 7B ・ ・
Lower floor pillar, 8 ・ ・ T type steel, 9 ・ ・ rib steel plate, 10 ・ ・ Headed stud bolt.

Claims (1)

[Claims] 1. Legs on both sides of an inverted U-shaped bent steel plate having a plurality of X-shaped slits formed on the upper surface are welded to the upper surface of an H-shaped steel beam, and corrugated steel plates are laid between the inverted U-shaped bent steel plates. A steel-framed building characterized by forming an X-shaped slit on the upper surface of the inverted U-shaped bent steel plate to form a triangular projection, and then arranging floor slabs above it and placing floor slab concrete Floor level adjustment method.