JPH102016A - Base isolated unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolated unit building with excellent base isolation effect even when a base isolation device is not fitted to every column of a building unit. SOLUTION: A plurality of building units 2 are assembled in the vertical direction and the right-to-left direction, a roof truss 31 is fitted on a plurality of building units 2 on a highest floor, the building unit 2 immediately below the roof truss is connected to the roof truss 31, the upper building unit 2 and the lower building unit 2 are connected, a column 21 on each side to support the roof truss 31 among a plurality of building units 2 group of the lowest floor is fitted to a foundation 9 through a base isolation device 5, and the other columns 21 are not fitted to the foundation 9. The load of the unit building 1 is applied to the column 21 on each side to support the roof truss 31 through the roof truss 31. Thus, a large load is applied to the base isolation device 5, the base isolation device can sufficiently demonstrate its performance, and it is safe that the unit building 1 is difficult to oscillate by an earthquake. The number of the base isolation devices is small and the base isolated unit building is inexpensive.

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. On the other hand, because the building shakes during an earthquake, the building breaks, or the closet inside the building falls, causing damage,
Seismic isolation buildings that have been made harder to shake have been 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 pipe is buried in a concrete foundation, and the A structure in which an anchor provided is inserted into the sheath tube and installed is known.

[0004]

However, in the seismic isolation unit building described in the above publication, since the seismic isolation devices are attached to all the columns of the building unit, the number of seismic isolation devices increases, which is extremely complicated and expensive. . Further, when this seismic isolation device is attached to all the columns of the building unit, there is a problem that the load applied to one seismic isolation device is small and the seismic isolation effect is reduced. Therefore, an object of the present invention is to provide a seismic isolation unit building having a large seismic isolation effect without attaching the seismic isolation device to all columns of the building unit.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a plurality of building units are assembled vertically and horizontally, and a roof is placed on a plurality of building units on the top floor. A seismic isolation unit building to which a truss is attached, wherein a building unit immediately below the roof truss is connected, a building unit on an upper floor is connected to a building unit on a lower floor, and a plurality of building units on the lowest floor are connected. Pillars on both sides supporting the roof truss in the group are attached to the foundation via seismic isolation devices, and the other pillars are not attached to the foundation. In the present invention, the roof truss may be assembled at the construction site. However, a roof unit having a roof truss is manufactured in advance at a factory or the like, transported to the construction site, and the roof unit is assembled on the building unit. It is preferable to use a building to which is attached because it is simpler. In the present invention, the pillars on both sides supporting the roof truss in the plurality of building unit groups on the lowest floor are attached to the foundation via the seismic isolation device, and the meaning is as follows. . In other words, when there are many roof trusses of a unit building, the columns on both sides supporting all the roof trusses may be attached to the foundation via seismic isolation devices. The pillars on both sides supporting the main roof truss may be attached to the foundation via seismic isolation devices. In particular, the roof trusses provided at both ends of the unit building are important, so at least
The pillars on both sides supporting the roof truss at both ends, ie, the pillars at the four corners of the unit building, are preferably attached to the foundation via seismic isolation devices.

(Operation) In the unit building of the present invention, the building unit immediately below the roof truss is connected to the building unit on the upper floor, the building unit on the lower floor is connected, and a plurality of building unit groups on the lowest floor. Since the two pillars supporting the roof truss in the building are attached to the foundation and the other pillars are not attached to the foundation, the load of all building units of this unit building is applied to both pillars through the roof truss. Moreover, since the pillars on both sides supporting the roof truss are attached to the foundation via seismic isolation devices, a large load is applied to this seismic isolation device, and the seismic isolation device can fully demonstrate its performance. It is difficult for this unit building to vibrate due to an earthquake or the like. As described above, since the seismic isolation device is attached only to the pillars on both sides supporting the roof unit, the number of seismic isolation devices is small, and the building is an inexpensive seismic isolation unit building.

[0007]

Next, embodiments of the present invention will be described. 1 to 5 show an embodiment of the seismic isolation unit building of the present invention. FIG. 1 (a) is a front view showing only the framework of the seismic isolation unit building, and (b) is a front view of the seismic isolation unit building. FIG. 2 is a plan view showing only a skeleton, FIG. 2 is an explanatory diagram showing a skeleton of a building unit, FIG.
(B) is a partially cutaway perspective view showing a roof portion, FIG. 4 is a perspective view showing a seismic isolation device, and FIG. 5 is an explanatory diagram showing a connection state between a pillar and a foundation.

1 to 5, reference numeral 1 denotes a unit building. The unit building 1 includes eight building units 2 as one unit.
Four units are assembled on the second floor and four units are assembled on the second floor, and the roof unit 3 is assembled thereon. The skeleton of the building unit 2 is
As shown in FIG. 2, four rectangular tubular steel columns 21, 2 arranged at four corners of a rectangle having short sides and long sides.
1, 21, 21 and four steel ceiling beams 2 each having a U-shaped cross section for connecting the upper portions of the four pillars 21 along the short side and the long side.
3, 23, 23, 23 and four steel floor beams 2 each having a U-shaped cross section for connecting the lower portions of the four columns 21 along the short side and the long side.
2, 22, 22, and 22.

[0009] 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.

As shown in FIG. 5, the column 21 is provided with a plate 211 on the lower end surface thereof and is closed. And the plate 2
At approximately the center of 11, a through hole 212 is provided. Reference numeral 3 denotes a roof unit. As shown in FIG. 3, the roof unit 3 has two roof trusses 31 erected substantially in parallel, and the roof truss 31 is connected by a main house 32 or a beam 33. A rafter 34 is mounted on the purlin 32 or the beam 33, and a field board 35 is mounted thereon. A plurality of the roof units 3 which are firmly connected to each other in an upright shape are arranged. A waterproof sheet 36 is laid thereon, and a roof material 37 is laid to form a roof.

The roof truss 31 has a bundle 312 erected substantially vertically on a land beam 311, reinforced with a brace 313, and a gasket 3
14 is attached obliquely and assembled into a substantially right triangle. The width of the roof unit 3 is substantially the same as the width of the building unit 2. When the roof unit 3 is mounted on the building unit 2, the roof truss 31 of the roof unit 3 and the ceiling beam 23 of the building unit 2 are separated. It is designed to polymerize.

Reference numeral 5 denotes a seismic isolation device.
As shown in FIG. 4, a laminated rubber 52 is provided between the metal plates 51 on both sides, and a through hole 53 is provided substantially at the center. 9 is a foundation, 91 is an anchor bolt buried in the foundation 9, and 92 is a nut screwed into the anchor bolt.

Next, the construction method and operation of this building will be described. In a factory, a column 21 is manufactured by providing a plate body 211 having a through-hole 212 on the lower end surface of a steel rectangular cross section. Four pillars 21 are arranged at four corners of a rectangle consisting of a short side and a long side, and an upper part of the four pillars 21 is formed of four steel ceiling beams having a U-shaped cross section along the short side and the long side. 23, 23, 23,
23, and the lower portions of the four pillars 21 are made of four steel U-shaped floor beams 22, 22, 22, 22, along the short side and the long side.
2 to manufacture the skeleton of the building unit 2.

A steel floor beam 25 is inserted between the 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. Furthermore, the building unit 2 is completed by attaching furniture such as a bathtub and a closet, or performing interior and exterior decoration.

On the other hand, a bundle 312 is erected substantially vertically on the land beam 311, and a joint 314 is attached diagonally on the bundle 312 to assemble into a substantially right-angled triangle.
1 is manufactured. As shown in FIG. 3, two roof trusses 31 are erected almost in parallel, and the roof truss 31 is connected by a purlin 32 or a beam 33 to manufacture a framework of the roof unit 3. A rafter 34 is mounted on the skeleton purlin 32 or the beam 33, and a field board 35 is mounted thereon to manufacture the roof unit 3.

The building unit 2 and the roof unit 3 manufactured as described above are transported to a construction site. At the construction site,
The foundation 9 is provided in advance. In addition, FIG.
(B) Anchor bolts 91 are buried in the four corners (positions where the pillars at both ends supporting the roof truss 31 at both ends of the unit building 1 are attached) indicated by the triangles of (b). And
The seismic isolation device 5 is attached to the anchor bolt 91 on the foundation 9 through the through hole 53 of the seismic isolation device 5.

A jack is attached to a place where the pillar 21 of the other building unit 1 is attached. Thereafter, the building unit 2 is installed on the foundation 9 and the jack. That is, in the place where the seismic isolation device 5 is located, the pillar 21 is installed on the seismic isolation device 5 by passing the anchor bolt 91 through the through hole 212 provided in the column 21 of the building unit 1, and the nut 92 is screwed into the anchor bolt 91. Enter 9
And the column 21 are firmly connected. In a place where the seismic isolation device 5 is not provided, the pillar 21 is installed on the jack.

In this way, the building unit 2 on the first floor is installed, and the floor beam 22 and the ceiling beam 23 of the adjacent building unit 2 are connected. Next, the building unit 2 on the first floor is installed on the building unit 2 on the first floor, and the ceiling beam 23 of the building unit 2 on the first floor and the floor beam 22 of the building unit 2 on the second floor are firmly connected. Furthermore, the floor beam 22 of the building unit 2 on the second floor and the floor beam 22 of the adjacent building unit, and the ceiling beam 23 and the adjacent ceiling beam 23 are firmly connected.

Next, a roof unit 3 is installed on the second-floor building unit 2 in a bundle of right-angled triangles.
The bundles are firmly connected to each other,
The ceiling beams 23 of the first and second floor building units 2 are firmly connected. Thereafter, the unit building 1 is removed by removing the jacks, laying the waterproof sheet 36 on the roof board of the roof unit 3 and covering the roofing material 37 thereon, or finishing the connection between the building units 2. Finalize.

The unit building 1 thus constructed is
Since the roof truss 31 is mounted on the plurality of building units 1 on the second floor, the building unit 2 on the second floor is connected to the roof truss 31, and the building unit 2 on the first floor is connected thereunder. . That is, all the building units 2 are connected to the roof truss 31, and the plurality of building units 2 on the first floor are connected.
Since the pillars 21 (four corner pillars 21) on both sides supporting the roof truss 31 in the group are attached to the foundation 9, and the other pillars 21 are not attached to the foundation 9, the load of the unit building 1 is Through the pillars 21 at the four corners.

As described above, since the pillars 21 on both sides supporting the roof truss 31 are attached to the foundation 9 via the seismic isolation device 5, a large load is applied to the seismic isolation device 5, and the seismic isolation device 5 Can fully demonstrate its performance,
This unit building 1 is safe because it does not easily vibrate due to an earthquake. Further, since the seismic isolation device 5 is attached to only the pillars 21 on both sides, the number of the seismic isolation devices 5 is small, and the insulated unit building 1 is inexpensive.

[0022]

As can be seen from the above description, in the unit building of the present invention, the building unit immediately below the roof truss is connected, the building unit on the upper floor and the building unit on the lower floor are connected, and Since the pillars on both sides supporting the roof unit in the group of building units are attached to the foundation and the other pillars are not attached to the foundation, the load of this unit building is applied to both pillars through the roof truss. I have. Moreover, since the pillars on both sides are attached to the foundation via the seismic isolation device, a large load is applied to the seismic isolation device, and the seismic isolation device can sufficiently exhibit its performance. It is safe because it does not easily vibrate due to an earthquake. As described above, the seismic isolation device is attached only to the pillars on both sides supporting the roof unit, so that the number of the seismic isolation devices is small and the building is an inexpensive seismic isolation unit building.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a seismic isolation unit building according to the present invention, wherein (a) is a front view showing only the framework of the seismic isolation unit building, and (b) is a plane of (a).

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

FIG. 3A is an explanatory view showing a skeleton of a roof unit, and FIG. 3B is a partially cutaway perspective view showing a roof portion.

FIG. 4 is a perspective view showing the seismic isolation device.

FIG. 5 is an explanatory view showing a connecting portion between a pillar and a foundation.

[Explanation of symbols]

 Reference Signs List 1 unit building 2 building unit 21 pillar 22 floor beam 23 ceiling beam 3 roof unit 31 roof truss 5 seismic isolation device 9 foundation

Claims (1)

[Claims] 1. A seismic isolation unit building in which a plurality of building units are assembled vertically and horizontally and a roof truss is mounted on a plurality of building units on the top floor, wherein the building is directly below the roof truss. The units are connected, the building units on the upper floor and the building units on the lower floor are connected, and the columns on both sides supporting the roof truss in the group of building units on the lowest floor are connected to the foundation via seismic isolation devices. Attached
A seismic isolation unit building characterized in that the other pillars are not attached to the foundation.