JPH08260478A - Steel foundation for building - Google Patents

Abstract

PURPOSE: To reduce the amount of work in a construction site while preventing wastes from being produced in execution of work. CONSTITUTION: A foundation 1 is composed of a steel base 2 extending horizontally, a framework body 3 made of steel frames, and a steel building frame support structure 4 supporting a column 10 of a building frame 5. The steel base 2 is a belt-like structure that is made up by laying steel base units 2a, each of which is made up by joining an upward-looking channel steel to the underside of an H-steel. The steel framework body 3 is constructed by arranging steel frames 8, 9 such as H-steels in parallel crosses. The building frame support stand 4 is composed of an H-steel that is placed between the steel frames 9 and 9 of the steel framework body 3 and joined at its both ends to the steel frames 9 and 9. The above-mentioned members are all joined respectively with high strength bolts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel foundation for buildings such as offices, meeting places, warehouses, buildings and houses.

[0002]

2. Description of the Related Art Generally, the foundation of a steel building is a reinforced concrete foundation 50, on which a column base 51 is fixed by anchor bolts 52, as shown in FIG.

[0003]

However, when constructing, basic reinforcement, formwork construction, concrete placement, curing, etc. are required, which takes time and effort on site. When dismantled, concrete waste is generated.

The object of the present invention is to reduce on-site work,
The goal is to provide a steel foundation for the building that does not generate waste during demolition.

[0005]

A steel foundation for a building according to the present invention comprises a steel base that spreads in a plane, a steel frame structure provided on the steel base, and a steel frame structure that is joined to the steel frame structure. It is provided with a steel frame installation base on which the building frame is placed.
In the above basic configuration, the steel base may be one in which a strip-shaped unit steel base made by joining upward light channel steel to the lower surface of the shaped steel is spread. In that case, a plurality of parallel steel frames constituting the steel frame structure are provided orthogonal to the unit steel base, and the shaped steel of each unit steel base is joined to the steel frame. Also, in the basic configuration or the configuration using the strip-shaped unit steel base, the steel frame assembly is an H-shaped steel assembled in a cross beam shape, and the skeleton installation base is a pair of the steel frame assembly. It may be made of H-shaped steel joined between parallel steel frames. The column base of the building frame is joined to this H-shaped steel frame installation base. Further, the steel base may be a road surface lining plate such as a deck plate, and a plurality of parallel sleepers may be provided instead of the steel base.

[0006]

According to this structure, the column axial force of the building frame is sequentially dispersed and transmitted to the ground through the frame installation base, the steel frame assembly, and the steel base. In the case where the steel base is a unit steel base in which a lightweight channel steel is joined to the lower surface of the shaped steel, the weight of the steel material can be reduced and the area of the steel base can be reduced. When the steel frame assembly is made of H-shaped steel in a cross beam shape, it can be made to have a simple structure and be solid, and the load such as column axial force is well dispersed and transmitted to the steel base. If the steel base is a road surface lining plate such as a deck plate, the weight can be further reduced and the assembling can be simplified. When sleepers are used instead of the steel base, high rigidity can be achieved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. The steel base 1 of this building has a steel base 2 that spreads in a plane, a steel frame 3 provided on the steel base 2, and a steel frame 3 that is provided inside the steel frame 3 to form a building frame 5. It is composed of a steel frame installation base 4 to be placed.

The steel base 2 is formed by laying strip-shaped unit steel bases 2a formed by joining upward light channel steels 7 on the lower surface of an H-shaped steel 6 in parallel. The steel frame structure 3 includes two steel frames 8 and 8 (FIG. 2) such as an H-shaped steel extending in a direction orthogonal to the unit steel base 2a and two steel frames 8 and 8 having both ends joined to each other. It is assembled like a cross with steel frames 9 and 9. The steel frame 8 in the orthogonal direction is provided over the entire width of the steel base 2. The frame installation base 4 is made of H-shaped steel with both ends joined between the two steel frames 9 of the steel frame structure 3, and the column base 10a of the steel column 10 of the building frame 5 is installed in the center thereof. .

As shown in the enlarged view of FIG. 1B, the H-section steel 6 of each unit steel base 2a is joined to the lower flange of the steel frame 8 of the steel frame assembly 3 with bolts 11 such as high strength bolts. There is.
Between the upper and lower flanges of the steel frame 8, H of each unit steel base 2a
A reinforcing member 12 made of an iron plate is joined to the portion of the shaped steel 6 where the web portion is located by welding or the like. Steel frame assembly 3
The steel frame 9 in the parallel direction is an H-shaped steel having a larger vertical width than the steel frame 8 in the orthogonal direction, and is joined to the steel frame 8 in the orthogonal direction via a joint member 13 as shown in the side view of FIG. The joining member 13 is formed of a joining plate such as an iron plate, and a part of the joining plate is welded in the steel frame 8 in the orthogonal direction over the upper and lower flanges. It is joined with a bolt 14. A reinforcing member 15 made of an iron plate or the like is provided by welding or the like at a portion of the steel frame 8 where the joining member 13 is welded and a portion opposite to the web. In addition, the lower surface of the steel frame 9 has a steel base 2
It is slightly raised from the top of the.

The skeleton installation base 4 is made of H-shaped steel having a larger vertical width than the steel frame 8 in the parallel direction.
Similar to the joining structure between the joining members, as shown in FIG.
It is joined to the steel frame 9 via 6. The joining member 16 is made of a joining plate such as an iron plate, a part of which is welded in the steel frame 9 between the upper and lower flanges, and the portion protruding from the steel frame 9 is overlapped with the web surface of the frame installation table 4 and bolted with a high-strength bolt or the like. It is joined. Reference numeral 17 denotes a bolt insertion hole of the joining member 16. A reinforcing member 18 made of an iron plate or the like is provided by welding or the like at a portion of the steel frame 9 where the joining member 16 is welded and a portion opposite to the web. Also the lower surface of the frame installation base 4,
It is slightly raised from the upper surface of the steel base 2. Body installation stand 4
A reinforcing member 19 is provided at a position directly below both flanges of the steel frame column 10 in a column mounting portion at the center of. The reinforcing member 19 is made of an iron plate or the like, and is welded between the upper and lower flanges on both sides of the web of the frame installation base 4 made of H-shaped steel.

The building skeleton 5 is a skeleton of a steel frame building, and the steel frame column 10 is made of H-shaped steel, and the base plate 20 welded to the lower end thereof is joined to the upper surface of the skeleton installation base 4 with bolts 21. Further, the angle members 22 and 23 overlapping the base plate 20 are provided on the outer surface of the flange and the web surface of the steel frame column 10, and the base plate 20 and the frame installation table 4
The angle members 22 and 23 are bolted to the flange and the web while being bolted to the upper flange. Beams 24 and 25 made of H-shaped steel, which are floor beams and the like, are joined to the steel column 10 with bolts via split tees, end plates, and the like.

An example of dimensions of each member will be described. Body installation stand 4
Is H-shaped steel of 390 × 300 × 10 × 16, steel frame 9 is 3
40 × 250 × 9 × 14 H-section steel, steel frame 8 is 244 × 1
75 × 7 × 11 H-section steel, unit steel base 2a H-section steel 6
Is 200 × 100 × 5.5 × 8, and the lightweight channel steel 7 has dimensions of 300 × 50 × 4.5. Further, the steel column 10 is made of H-shaped steel of 340 × 250 × 9 × 14.
All units are millimeters. In this way, for each steel material constituting the steel foundation 1, those having a larger cross section are used in order of load transmission in the order of load transmission.

According to the foundation 1 having this structure, the axial force of the steel column 10 is transmitted to the ground through the unit steel substrate 2a continuously laid. In this case, the column axial force is passed through the base plate 20, from the skeleton installation base 4, through the parallel-direction steel frames 8 and the orthogonal-direction steel frames 9 of the steel frame assembly 3 assembled in a cross beam shape, in each unit. It flows to the steel base 2a. In this way, the column axial force is distributed and transmitted from the narrow column cross section to the steel base 2 having a large area. Since the unit steel base 2a uses an assembly member in which the lightweight channel steel 7 is welded to the lower surface of the H-shaped steel 6, the weight of the steel material is reduced and the area of the entire base can be reduced. In addition, since the steel foundation 1 is bolt-bonded to each member, it can be easily assembled on site and disassembled easily. In the case of the building frame 5 shown,
The beams 24 and 25 of the first floor are provided, the column axial force is supported by this steel foundation 1, and the bending moment of the column base 10a is the beams 24 and 25 of the first floor.
It is designed to be supported by 25.

In the steel foundation 1 of the above embodiment,
Instead of the steel base 2, a plurality of concrete sleepers 26 may be laid in parallel as shown in FIG. 4, and as shown in FIG. 5, a road surface lining plate such as a deck plate called a metro deck is made of steel. It may be used as the base 2. These sleepers 26
If a road surface lining plate is used, the rigidity is increased and the structure is simplified.

Although the steel frame pillar 10 of the building frame 5 is H-shaped steel in the above embodiment, the steel frame pillar 10 may be a square steel pipe or a round steel pipe column, and a beam is attached to the steel foundation 1. You may install it directly.

[0016]

The steel foundation of the building of the present invention has a steel base that spreads in a plane, a steel frame structure provided on the steel base, and a building frame mounted on the steel frame structure. Since it is equipped with a steel frame installation base, on-site work can be reduced, and no waste is generated during dismantling. In the case of the invention of claim 2, the steel base is formed by laying a strip-shaped unit steel base formed by joining the upward light weight grooved steel to the lower surface of the shaped steel, and constitutes the steel frame assembly. Since a plurality of parallel steel frames are provided orthogonal to the unit steel base and the shaped steel of each unit steel base is joined to the steel frame, the weight of the steel material can be reduced and the area of the entire base can be reduced. In the case of the invention of claim 3, the steel frame assembly is an H-shaped steel assembled in a cross beam shape, and the frame installation base is joined between a pair of parallel steel frames of the steel frame assembly. Since the column base of the building frame is joined to this H-shaped steel frame installation base, the column axial force and the like are well dispersed and transmitted to the steel base, and the structure is simple and robust. In the case of the invention of claim 4, since the steel base is the road surface lining board, the weight is further reduced and the structure is simplified. In the case of the invention of claim 5, since a plurality of parallel sleepers are provided instead of the steel base, the rigidity is increased.

[Brief description of drawings]

FIG. 1A is a cutaway front view of a steel foundation according to the present invention, and FIG. 1B is a partially enlarged view thereof.

FIG. 2 is a plan view of a steel foundation.

FIG. 3 is a cutaway side view of a steel foundation.

FIG. 4 is a cutaway front view of another embodiment of the present invention.

FIG. 5 is a cutaway front view of still another embodiment of the present invention.

FIG. 6 is a sectional view of a conventional example.

[Explanation of symbols]

1 ... Steel base, 2 ... Steel base, 2a ... Unit steel base, 3
… Steel frame structure, 4… Frame installation stand, 5… Building frame, 6… H
Shaped steel, 7 ... Lightweight channel steel, 8, 9 ... Steel frame, 10a ... Column base

Claims (5)

[Claims] 1. A steel base that spreads in a plane, a steel frame structure provided on the steel base, and a steel frame installation table that is joined to the steel frame and on which a building frame is mounted. Steel foundation of the building. 2. The steel base is formed by laying a strip-shaped unit steel base made by joining an upwardly facing lightweight channel steel on the lower surface of a shaped steel, and comprising a plurality of steel frames constituting the steel frame assembly. The steel foundation for a building according to claim 1, wherein parallel steel frames are provided orthogonal to the unit steel base, and the shaped steel of each unit steel base is joined to the steel frame. 3. The steel frame assembly is H-shaped steel assembled in a cross beam shape, and the skeleton installation base is made of H-shaped steel joined between a pair of parallel steel frames of the steel frame assembly. , This H
The steel foundation for a building according to claim 1 or 2, wherein a column base of the building frame is joined to a frame-shaped installation base made of shaped steel. 4. The steel foundation for a building according to claim 1, 2 or 3, wherein the steel foundation is a road lining plate. 5. The steel foundation for a building according to claim 1, wherein a plurality of parallel sleepers are provided instead of the steel foundation.