JPH1037313A - Base isolated unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move a column while a spherical body is rotated, even when a foundation is vibrated by an earthquake, to extinguish the vibration of a building by interposing the spherical body between the lower end of a first floor column and the upper surface of the foundation having an inclined surface the higher inside. SOLUTION: A spherical surface plate 3 dented upward is provided on the lower end surface of the column 21 of a first floor building unit, a number of small balls 32 are rotatably mounted on the lower surface thereto, and a spherical body 4 is rotatably fitted under the small balls. The upper surface of a foundation 5 in the position for installing the column 21 is made into an inclined surface 41 with the higher inside, and a steel plate 52 is mounted thereon. The spherical body 4 fitted to the lower end of the column is placed on the inclined surface 51 of the foundation 5 to construct a building unit 1. The force of four columns 21 sliding to the outside and trying to extend is canceled by the linkage with a floor beam 22 and a ceiling beam 23. Even if the foundation 5 is vibrated by an earthquake, the column 21 is moved while spherical body 4 is rolled to extinguish the vibration of the unit building 1. Even when earth and sand is fallen on the inclined surface 51, it is slid on the outside and never accumulated, so that the rotation of the spherical body 4 is never obstructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a seismic isolation unit building.

[0002]

2. Description of the Related Art A unit building is disclosed in Japanese Patent Publication No. 62-6222.
As described in Japanese Patent Publication No. 4 (1994), a box-shaped, internally and externally finished building unit of a certain size that can be transported is produced in a factory in advance, and a plurality of the units are transported to a construction site. , Assembled at the construction site. This unit building is widely adopted because it has a feature that it is a standardized building having a short construction period and high dimensional accuracy.

[0003] On the other hand, a building is shaken in the event of an earthquake, and the building is broken or a closet or the like in the building falls, causing damage. Therefore, seismically isolated buildings that are hard to shake are studied and put into practical use. As a seismic isolation unit building in which the unit building has a seismic isolation structure, as described in JP-A-6-58011, a rubber sheath tube is buried in a concrete foundation and provided on a pillar of the building unit. There is known a structure in which a fixed anchor is inserted into the sheath tube and installed.
Further, as a seismic isolation structure, as described in JP-A-1-315536 and JP-A-2-19260, a seismic isolation target having a rolling-supported spherical body and an inner peripheral surface are formed on a slope. There is known a structure in which a spherical body is placed on the concave portion.

[0004]

However, in the seismic isolation unit building described in the above-mentioned publication, since the building unit is heavy and the sheath tube is small, the anchors provided on all the pillars of the building unit must be installed inside the sheath tube. It is difficult to install a building unit while inserting it into a building. Also, the seismic isolation device consisting of the spherical body and the concave part is applied to a unit building, a concave part is provided on the upper surface of the foundation, and a spherical body is rotatably provided on the lower surface of the pillar. However, there is a problem that dust or dirt carried by wind or the like accumulates in the concave portion because the upper surface of the foundation of the building is outside, and the spherical body hardly rolls in the concave portion during an earthquake. Therefore, an object of the present invention is to easily install a building unit, and
An object of the present invention is to provide a seismic isolation unit building in which a spherical body attached to a lower surface of a pillar does not become difficult to roll.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is to connect a floor beam connecting a lower end of a column and an upper end of a column. A seismic isolation unit building in which a plurality of building units each having a skeleton assembled in a box shape with a ceiling beam are assembled on a foundation, wherein the foundation has an inclined surface having an upper end surface raised inside, and a first floor. In this building unit, a spherical body is rotatably provided on the lower end surface of a pillar, and the spherical body is mounted on an inclined surface of a foundation.

According to a second aspect of the present invention, a plurality of building units each having a frame-like structure assembled in a box shape by a floor beam connecting a lower end of a column and a ceiling beam connecting an upper end of a column are provided on a foundation. A seismically isolated unit building, wherein the foundation has an inclined surface having an upper end surface raised outside, and a spherical unit is rotatably provided on a lower end surface of a pillar in the building unit on the first floor; The body rests on the inclined surface of the foundation.

In the present invention, the spherical body is rotatably provided on the lower end face of the pillar of the building unit on the first floor. However, the structure in which the spherical body is rotatably provided on the lower end face of the pillar may be appropriate. . For example, the lower end surface of the pillar may be formed into a spherical shape that is depressed upward, and a spherical body may be rotatably inserted therein. Further, a small spherical surface may be inserted between the spherical shape of the lower end surface of the pillar and the spherical body. A spherical body may be inserted to make the spherical body roll easily. Alternatively, a rotating shaft may be provided on the lower surface of the pillar, a concave portion or a through hole may be provided in the spherical body, and the rotating shaft may be inserted into the concave portion or the through hole of the spherical body so that the spherical body is rotatably mounted on the lower end surface of the pillar. Alternatively, conversely, a concave portion or a through hole may be provided in the spherical body, and a rotary shaft attached to a pillar may be passed through the concave portion or the through hole.

(Action) The seismic isolation unit building of the present invention is a building in which a plurality of building units are assembled on a foundation. According to the first aspect of the present invention, the foundation has an inclined surface with the inside of the upper end surface raised, and a spherical body is rotatably provided on the lower end surface of the pillar in the building unit on the first floor. Is placed on the inclined surface of the first floor, a force is exerted on the lower end surface of the pillar of the building unit on the first floor to slide outward along the inclined surface of the foundation. As a result, the pillars of the building units on the first floor are about to expand outward, but the pillars of the building units on the first floor extend outward because the pillars of this building unit are connected by floor beams and ceiling beams. As a result, the sliding forces of each column cancel out, and eventually the columns of the building unit are installed non-slip and immobile in place.

[0009] When the land shakes due to the earthquake,
The foundation vibrates, but the spherical body at the lower end face of the pillar of the building unit on the first floor rotates while the pillar moves on the slope of the foundation, and
Less vibration of building units on floor. Thus, the vibration of the building unit on the first floor is small, so that the vibration of the entire unit building is small.

According to the second aspect of the present invention, the foundation is provided with an inclined surface having an upper end surface raised outside, and a spherical body is rotatably provided on the lower end surface of the pillar in the building unit on the first floor. Is mounted on an inclined surface of the foundation, so that
Contrary to the described invention, the only difference is that each pillar tries to slide inward, and the forces that try to slide inward of the pillars are offset and installed so that they do not move to that location,
Similarly to the first aspect of the present invention, even if the foundation vibrates due to an earthquake, the spherical body moves on the inclined surface while rotating, and the vibration of the unit building is small. In the present invention, since the upper end surface of the foundation is a sloping surface whose inside is raised or its outside is raised, even if earth or sand falls on this, it slides on this sloping surface and accumulates. Therefore, the spherical body at the lower end face of the pillar of the building unit does not easily roll on the inclined surface of the foundation.

[0011]

Next, embodiments of the present invention will be described. 1 to 3 show an embodiment of the seismic isolation unit building of the present invention. FIG. 1 (a) is an explanatory diagram showing the relationship between the skeleton and the foundation of the first floor building unit, and (b) is (a). 2) is a cross-sectional view taken along line AA, FIG. 2 is an explanatory view showing a skeleton of the building unit, FIG. 3 (a) is an explanatory view showing a state in which the building unit is assembled, and (b) is a completed unit building. FIG.

1 to 3, reference numeral 1 denotes a unit building. The unit building 1 is composed of nineteen building units 2 on the first floor and four on the second floor, and a roofing material 6 is mounted thereon. It is a thing. The skeleton of the building unit 2 is shown in FIG.
As shown in the figure, four rectangular cylindrical steel columns 21, 21, 2, which are arranged at four corners of a rectangle having a short side and a long side.
1, 21 and four steel ceiling beams 23, 2 having a U-shaped cross section connecting the upper portions of the four pillars 21 along the short side and the long side.
3, 23, 23, and four steel floor beams 22, 2 having a U-shaped cross section connecting the lower portions of the four columns 21 along the short side and the long side.
2, 22, and 22.

[0013] Steel floor beams 25 are extended across the opposite long side floor beams 22 of the skeleton of the building unit 2, and a wooden floor joist 26 is mounted on the floor beams 25.
A floor material is attached on the floor joist 26 to form a floor. Further, a wooden ceiling beam 27 is extended over the ceiling beam 23 on the long side facing the ceiling beam, and a ceiling material is attached to the lower surface of the ceiling beam 27 to form a ceiling. Further, at the place where the outer wall is provided, a stud 29 is attached between the floor beam 22 and the ceiling beam 23, and an outer wall material and an inner wall material are attached to the outdoor side and the indoor side of the stud 29, respectively. A heat insulating material made of rock wool is attached between the inner wall material and the outer wall.

FIG. 1 shows a pillar 21 of the building unit 2 on the first floor.
As shown in the figure, a spherical plate 3 recessed upward is provided on the lower end surface, and a number of small balls 32 are provided on the lower surface of the spherical plate 3.
Is mounted rotatably, and the spherical body 4 is rotatably fitted below the small ball 32. Reference numeral 5 denotes a foundation, and an upper surface of a place where the column 21 of the foundation 5 is installed is an inclined surface 51 with an inner side raised, and a steel plate 52 is attached to the inclined surface 51.

Next, the construction method and operation of the unit building 1 will be described. At a factory, four pillars 21 are arranged at four corners of a rectangle consisting of a short side and a long side.
1 are connected by four steel ceiling beams 23, 23, 23, 23 having a U-shaped cross section along the short side and the long side, and four pillars 2
The lower part of 1 is connected with four steel floor beams 22, 22, 22, 22 having a U-shaped cross section along the short side and the long side to manufacture the skeleton of the building unit 2.

A steel floor beam 25 is inserted between floor beams 22 on opposite long sides of the skeleton of the building unit 2, and a wooden floor joist 26 is mounted on the floor beam 25. The flooring is mounted on 26 to form the floor. or,
A wooden ceiling small beam 27 is inserted between the opposite long side ceiling beams 23, and a ceiling material is attached to the lower surface of the ceiling small beam 27 to form a ceiling. Further, at the place where the outer wall is provided, a stud 29 is bridged and mounted between the floor beam 22 and the ceiling beam 23, and an outer wall material and an inner wall material are attached to the outdoor side and the indoor side of the stud 29, respectively. A heat insulating material made of rock wool is attached between the inner wall material and the outer wall material.

Further, the building unit 2 is completed by installing furniture such as a bathtub or a closet in the building unit 2 or performing interior decoration or exterior decoration. In addition, building unit 2 on the first floor
At the lower end surface of the pillar 21 used for the
A large number of small balls 32 are rotatably mounted on the lower surface of the plate body 3, and the spherical body 4 is rotatably fitted in the spherical plate body 3.

The building unit 2 thus manufactured is transported to the construction site. At the construction site, a foundation 5 is provided in advance. The foundation 5 is provided with an inclined surface 51 with an inner side raised at the upper end surface of the place where the column 21 is installed, and a steel plate 52 is attached to this inclined surface. 1 on this foundation 5
The building unit 2 on the floor is installed such that the spherical body 4 provided on the lower end surface of the pillar 21 is placed on the inclined surface 51. As described above, since the inclined surface 51 of the foundation 5 is wide, it is easy to install the building unit 2 on the first floor on the inclined surface 51.

Next, two buildings are placed on the building unit 2 on the first floor.
The building unit 2 on the floor is installed, and the roofing material 6 is mounted on the building unit 1 on the top floor. After that, the connection between the building units 2 is finished, and water and the like are connected to complete the unit building 1. Thus, Basic 5
Is an inclined surface 51 whose inside is raised.
The spherical body 4 is provided on the lower end surface of the pillar 21 of the building unit 2 on the first floor.
Are provided rotatably. Since the spherical body 4 rests on the inclined surface 51 of the foundation 5, a force that causes the lower end surface of the column 21 of the building unit 2 on the first floor to slide outward along the inclined surface 51 of the foundation 5 is generated. work. As a result, the lower side of the pillar of the building unit 21 on the first floor tends to expand, but the four pillars of this building unit 21 are connected by the floor beam 22 and the ceiling beam 23, so that the building on the first floor is The pillars 21 of the unit 2 cannot extend outward, and the slipping forces of the respective columns 21 are offset, and eventually the pillars 21 of the building unit 2
Without slipping, the building unit 2 is installed in a state where it does not move there.

And when the land vibrates due to the earthquake,
Although the foundation 5 vibrates, the pillar 21 moves on the inclined surface 51 of the foundation 5 while the spherical body 4 on the lower surface of the column 21 of the building unit 2 on the first floor rotates, and the vibration of the building unit 2 on the first floor is small. . As described above, since the vibration of the building unit 2 on the first floor is small, the vibration of the entire unit building 1 is small, so that it is safe. In addition, since the upper end surface of the foundation 5 is an inclined surface 51 whose inside is raised or whose outside is raised, even if earth and sand fall on this, it may slip on the inclined surface 51 and accumulate. The pillar 2 of the building unit 2
The spherical body 4 at the lower end surface of the first roller 1 does not easily roll.

[0021]

According to the first aspect of the present invention, the foundation has an inclined surface with the inside of the upper end raised, and a spherical body is rotatably provided on the lower end of the pillar in the building unit on the first floor. Since the body rests on the slope of the foundation, each pillar will try to slide inward, but the entire building unit will be mounted so that it does not move there. When the land vibrates due to the earthquake, the foundation vibrates. However, the sphere on the lower end face of the pillar of the building unit on the first floor rotates, and the pillar moves on the inclined surface of the foundation, causing the vibration of the building unit on the first floor. Less is. Thus, since the vibration of the building unit on the first floor is small, the whole unit building is hard to vibrate, so that it is safe.

According to the second aspect of the present invention, the foundation is provided with an inclined surface with the upper end surface raised outside, and a spherical body is rotatably provided on the lower end surface of the pillar in the building unit on the first floor. Is mounted on an inclined surface of the foundation, so that
Similarly to the described invention, even if the foundation vibrates due to an earthquake, the spherical body moves on the inclined surface while rotating, and the vibration of the unit building is small. According to the first and second aspects of the present invention, since the upper end surface of the foundation is an inclined surface whose inside or outside is raised, even if earth and sand fall on the inclined surface, the foundation slides on the inclined surface. And the spherical body on the lower end face of the pillar of the building unit does not easily roll on the inclined surface of the foundation. Further, since the inclined surface can be widened, there is no difficulty in mounting the building unit on the inclined surface.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a seismic isolation unit building according to the present invention, wherein (a) is an explanatory diagram showing the relationship between the skeleton and the foundation of the building unit on the first floor, and (b) is A- It is sectional drawing in the A line.

FIG. 2 is an explanatory diagram showing a skeleton of a building unit.

FIG. 3A is an explanatory view showing a state in which a building unit is assembled, and FIG. 3B is an explanatory view showing a completed unit building.

[Explanation of symbols]

 Reference Signs List 1 unit building 2 building unit 21 pillar 22 floor beam 23 ceiling beam 4 spherical body 5 foundation 51 slope

Claims (2)

[Claims] 1. A plurality of building units having a skeleton assembled in a box shape by a pillar, a floor beam connecting a lower end of the pillar, and a ceiling beam connecting an upper end of the pillar are assembled on a foundation. A seismic isolation unit building, wherein the foundation has an inclined surface with the inside of the upper end surface raised, and the building unit on the first floor is provided with a spherical body at the lower end surface of a pillar so as to be rotatable, and this spherical body is A seismic isolation unit building that is mounted on a slope. 2. A plurality of building units having a skeleton assembled in a box shape by a pillar, a floor beam connecting a lower end of the pillar, and a ceiling beam connecting an upper end of the pillar are assembled on a foundation. A seismic isolation unit building, wherein the foundation has an inclined surface with the outside of the upper end surface raised, and a spherical unit is rotatably provided on the lower end surface of the pillar in the building unit on the first floor. A seismic isolation unit building that is mounted on a slope.