JP2825379B2 - Seismic isolation structure of steel frame prefabricated house - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation structure for a steel-frame prefabricated house, and more particularly to a novel improvement for obtaining a strong seismic isolation by providing a damping device between a plurality of vertical blocks. . In particular, the present invention relates to a substantially rectangular parallelepiped steel block known as a type of steel frame prefabricated house as a unit block, and stacks a large number of the unit blocks vertically in the vertical direction and also in the horizontal direction in the front-rear direction and the left-right direction. The present invention relates to a multi-story building having at least two or more layers formed by three-dimensionally arranging the corresponding sides of adjacent unit blocks, that is, columns and side beams, to each other.

[0002]

2. Description of the Related Art Conventionally, as a seismic isolation structure of a steel-frame prefabricated house, conventionally, as a passive type, there are a method of supporting with laminated rubber, a method of giving damping to braces and walls, and a method of using a dynamic vibration absorber. Are known.

As shown in FIG. 1 of the accompanying drawings, a part corresponding to each side of a rectangular parallelepiped unit block is formed as a steel frame in a part of a steel frame prefabricated house, and these are vertically, vertically and vertically. -What is constructed by combining in the left-right direction is known. FIG. 1 shows a two-story house as an example, but this house, as shown in the figure,
As a unit block, it is composed of a plurality of substantially rectangular parallelepiped steel frame blocks 1 to 8, of which unit blocks 1 and 2, unit blocks 3 and 4, unit blocks 5 and 6, Unit blocks 7 and 8
Are vertically arranged as vertical sets, respectively, and the unit blocks of each vertical set are firmly connected at side beams adjacent to each other in the vertical direction, and these vertical sets are connected in the horizontal direction. The unit blocks 1 to 8 arranged in the front-rear direction and the left-right direction so as to be directly adjacent to each other, and thus arranged in the vertical direction and the horizontal direction, have their adjacent vertical sides, That is, each of the pillars is firmly connected to each other. The steel frame prefabricated house having such a configuration has a non-seismic structure in this state.

[0004]

However, this type of steel frame prefabricated house has a low natural frequency and may have a small load depending on the seismic isolation system supported by a laminated rubber or the like, so that a sufficient seismic isolation effect is obtained. Is difficult to obtain.
In addition, this steel frame prefabricated house is out of the provisions of the Building Standards Law, and there is a problem in that the notification to the relevant government offices is complicated when constructing it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in particular, by providing a damping device between a plurality of vertical blocks to attenuate vibrations caused by an earthquake and to secure a safe steel prefabricated house. The purpose is to provide a seismic structure.

[0006]

A seismic isolation structure for a steel-frame prefabricated house according to the present invention is a steel frame constituted by arranging a plurality of substantially rectangular parallelepiped steel blocks as unit blocks in the vertical and horizontal directions. In a prefabricated house, at least one pair of the steel blocks is vertically stacked to form a plurality of vertical blocks, and at least four of the vertical blocks are orthogonal to each other.
The vertical surfaces of the pair are arranged so as to face each other with a space therebetween, and a damping device is attached between the vertical surfaces of the vertical blocks, and the longitudinal directions of the respective damping devices are two axes orthogonal to each other. It is a configuration arranged in the direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a seismic isolation structure for a steel frame prefabricated house according to the present invention will be described below with reference to the drawings. In FIG. 2, reference numerals 10 to 17 denote steel frames which are unit blocks formed of a steel frame and formed in a rectangular parallelepiped frame, and the inside of each of the steel frames 10 to 17 is used as a room of a building or the like. Each of the steel blocks 10 to 17
Are at least 1 to 10 and 11, 12 and 13, 14 and 1
5, 16 and 17 are stacked in the vertical direction,
Vertical blocks 30 to 33 are formed, and vertical blocks 30 to 3 are formed.
The steel blocks 10 to 17 in FIG. 3 are integrally connected in pairs.

As shown in FIG. 2, each of the vertical blocks 30 to 33 has a pair of vertical surfaces 30a and 30b, 31a and 31b, 32 orthogonal to each other.
a and 32b, 33a and 33b are formed, and between the vertical blocks 30 to 33, these vertical surfaces 31b and 30b, 31a and 33a, 32a and 30
Four spaces 40 to 43 are formed via a, 32b and 33b. Each of the spaces 40 to 43 is provided with a damping device 20 to 27, and each of the damping devices 20 to 27 is attached between each beam portion of each of the steel frame blocks 10 to 17, and the longitudinal directions thereof are mutually different. They are arranged along two axial directions.

Therefore, the vertical blocks 30 to 33 are arranged via the spaces 40 to 42, and the respective
Since the damping devices 20 to 27 are attached to
Even when vibration is applied from any of the X-axis and Y-axis directions, a sufficient damping action can be obtained.

In the above, a two-story building has been described as an embodiment of the present invention. However, a three-story building or more is performed in a similar manner. That is, the unit blocks are fixed in the vertical direction, and are connected to each other in the two horizontal directions by the damping device.

The present invention has the structure as described above. Next, the operation of the present invention will be described. The steel blocks 10 to 17 of the unit blocks constituting the building have different natural frequencies because they have different masses and stiffnesses. When an external force such as an earthquake or a strong wind is applied to such a building, if there is no damping device 20 to 27, each steel frame block 10 to 17 vibrates independently. , Each steel frame block 10-17,
Since the vibrations are connected by the damping devices 20 to 27, the vibrations are suppressed by the operation of the damping devices 20 to 27. Also, the lowermost steel block 10,
The construction of 12, 14, 16 is facilitated because the lower beam portion can be fixed to the foundation.

[0012]

Since the present invention has the above-described structure and operation, the structure is simple, construction is easy, and a steel frame prefabricated house which exhibits an excellent seismic isolation effect is provided. It is possible to provide a seismic isolation structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a frame of a conventional steel frame prefabricated house.

FIG. 2 is a perspective view showing one embodiment of a frame of a steel frame prefabricated house according to the present invention.

[Description of Signs] 10-17 Steel frame block 20-27 Damping device 30-33 Vertical block 30a-33b Vertical plane 40-43 Space

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Claims (1)

(57) [Claims] 1. A steel frame prefabricated house comprising a plurality of substantially rectangular parallelepiped steel blocks (10 to 17) as unit blocks arranged in a vertical direction and a horizontal direction, wherein at least one pair of the steel frame blocks is provided. (10-17) are stacked in the vertical direction to form a plurality of vertical blocks (30-33), and at least four of the vertical blocks (30-33) are orthogonal to each other of the vertical blocks (30-33). A pair of vertical surfaces (30a-33
b) are arranged so as to face each other via spaces (40 to 43), and the vertical surfaces (3 to 3) of the vertical blocks (30 to 33) are arranged.
0a to 33b), damping devices (20 to 27) are attached, and the longitudinal direction of each of the damping devices (20 to 27) is disposed in two axial directions orthogonal to each other. Seismic isolation structure of prefabricated house.