JPH1018432A - Unit building and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce costs by forming a building body in which a plurality of building units are disposed adjacent to each other and the building body is placed on a foundation through base isolation devices spaced apart a span larger than the width of the unit. SOLUTION: Building units 1 each are assembled in a factory and the units 1 each provided with a frame unit 2a having a length nearly equal to the width of the unit 1 and fixed to the underside of a floor beam 13 are carried to the site. And three building units 1 with frame unit 2a are placed side by side and the frame units 2a are longitudinally connected using frame connection plates 5, bolts B, and nuts N, following which the frame units 2a are raised together with the units 1 and put on base isolation devices 3 which are set on a foundation 4 so as to be spaced apart a span larger than the width of the unit 1, on the short side thereof, to construct a unit building. Thus the number of base isolation devices can be reduced to reduce costs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a unit building having a seismic isolation structure and a method of constructing the unit building.

[0002]

2. Description of the Related Art A unit building constructed by arranging a plurality of building units on a foundation horizontally and vertically adjacent to each other is well known as described in JP-B-58-37462. . However, in this unit building, the pillars or floor beams of the building unit are directly fastened and fixed to the anchor bolts planted on the foundation, so that there is a problem that earthquakes and traffic vibrations are easily transmitted to the building unit via the foundation. Was. Therefore, in recent years, Japanese Patent Application Laid-Open
As described in Japanese Patent No. 58909, a seismic isolation device made of laminated rubber or the like is provided between a pillar of a building unit and a foundation, and a building is constructed after an earthquake or traffic vibration is attenuated by the seismic isolation device. We're trying to solve the above problem by getting it to the unit.

[0003]

However, if a seismic isolation device is provided between the column and the foundation of the building unit as in the above-described conventional case, a large number of seismic isolation devices are required, resulting in very low material costs. There was a problem that becomes high.
In addition, when fixing the seismic isolation device to the foundation, laborious work such as allocating work to determine the fixing position of the seismic isolation device and embedding anchor bolts in the foundation is required, so the construction period will be long. There was a problem. Therefore,
The present invention focuses on the above-described problems and has a first object to reduce the cost of a unit building having a seismic isolation function, and to make it possible to construct such a unit building in a short time. It has two purposes.

[0004]

Means for Solving the Problems In order to achieve the first object, in the unit building according to the first aspect, a building body in which a plurality of building units are arranged adjacent to each other is provided with a seismic isolation device. In a unit building installed on a foundation via, a frame is provided between the building main body and the seismic isolation device over substantially the entire length of the building main body, and the seismic isolation device is larger than the width of the building unit. The configuration is such that they are arranged in a long span.

In order to achieve the first object, a unit building according to a second aspect of the present invention is the unit building, wherein the gantry is constituted by gantry units fixed below each of the building units, and the building units are arranged adjacent to each other. Are connected to each other.

In order to achieve the second object,
In the construction method for a unit building according to claim 3, a plurality of building units with a gantry unit having a gantry unit having a length substantially equal to the width of the building unit fixed below a floor beam are carried to the construction site, and the gantry is provided. Connect the gantry units of the building unit with units in the longitudinal direction, lift those gantry units together with the building unit, and place them on the seismic isolation device installed on the foundation with a span longer than the width of the building unit. It was a method to put.

Further, in order to achieve the first object,
In the unit building according to claim 4, in a unit building in which a plurality of building units are arranged adjacent to each other and installed on a foundation via a seismic isolation device, between the seismic isolation devices. , A reinforcing plate is fixed over substantially the entire length between floor beams of the seam of the building unit located at.

In order to achieve the first object,
In the unit building according to claim 5, the seismic isolation device is arranged with a span longer than the width of the building unit.

[0009]

In the unit building according to the first aspect, since the seismic isolation device is arranged with a span longer than the width of the building unit, the conventional unit building where the seismic isolation device is arranged with the same span as the building unit width. Therefore, the number of seismic isolation devices can be reduced. Also, since the whole building is supported by the gantry, even if the number of seismic isolation devices is reduced,
The rigidity of the building body is not impaired.

In the unit building according to the second aspect, the gantry is composed of gantry units fixed below each building unit, and the gantry units of adjacently arranged building units are connected to each other. Then, the gantry unit can be fixed to the building unit and then transported to the construction site, and the gantry units can be connected to each other at the construction site.

In the method for constructing a unit building according to the third aspect, the seismic isolation device is installed on the foundation with a span longer than the width of the building unit. It can be completed in a shorter time than that. Moreover, since the gantry unit is fixed to the floor beam of the building unit in advance, the work of connecting the gantry unit and the building unit at the construction site can be simplified.

In the unit building according to the fourth aspect, since the reinforcing plate is fixed over substantially the entire length between the floor beams at the joints of the building units located between the seismic isolation devices, the connection between the building units is established. Be strong. That is, when the earthquake occurs, the building body moves integrally, so that it is not necessary to provide a gantry between the foundation and the seismic isolation device.

[0013] In the unit building according to the fifth aspect, since the seismic isolation device is arranged at a span longer than the width of the building unit, the conventional unit building where the seismic isolation device is arranged at the same span as the building unit width. Therefore, the number of seismic isolation devices can be reduced. In addition, since the reinforcing plate is fixed over almost the entire length between the floor beams at the seams of the building units located between the seismic isolation devices, the rigidity of the building body is reduced even if the number of seismic isolation devices is reduced. It will not be compromised.

[0014]

Embodiments 1 and 2 will be described below in detail with reference to the drawings. First Embodiment First, a unit building according to a first embodiment corresponding to the inventions described in claims 1 and 2 will be described in detail. FIG. 1 is a front view of a unit building according to the first embodiment, and FIG. 2 is a plan view of the unit building according to the first embodiment. This unit building H1 has a total of six building units 1 in two rows of three in the girder direction. The building body is constituted by arranging in
It is installed on a foundation 4 via four bases 2 and eight seismic isolation devices 3.

As shown in FIG. 3, the building unit 1 is provided with pillars 11 at four corners, and the upper ends of the pillars 11 are connected by ceiling beams 12 and the lower ends of the pillars 11 are connected by floor beams 13. Thereby, the frame is formed in a box shape.

As shown in FIG. 2, four mounts 2 are provided in parallel with each other over substantially the entire length of the building body in the girder direction, and are provided between the building body and the seismic isolation device 3. As shown in FIG. 1, the gantry 2 is configured by connecting three gantry units 2a in the longitudinal direction with a gantry connection plate 5 and bolts B and nuts N, and each gantry unit 2a The bolts B and the nuts N fasten the floor unit 13 below the floor beam 13 in a direction (direction a in FIG. 3) orthogonal to the longitudinal direction of the building unit 1. As shown in FIG. 4, each gantry unit 2a is formed of an H-section steel having a length substantially equal to the width W1 of the short side of the building unit 1. As shown in the figure, the slit 51 fitted to the gantry unit 2a
And holes 52 for bolt insertion.

As shown in FIG. 2, the seismic isolation device 3 is arranged in the girder direction at a span of about three times the width W1 of the short side of the building unit 1, and in the wife direction, the length of the building unit 1 is reduced. They are arranged with a span approximately equal to the side width W2, and are fixed to the foundation 4 with anchor bolts A and nuts N, respectively. These seismic isolation devices 3 are, as shown in FIG.
A laminated rubber 32 is provided between two steel plates 31.

As described above, in the unit building H1 of the first embodiment, the seismic isolation devices 3 are arranged in the girder direction at a span approximately three times the width W1 of the short side of the building unit 1.
The number of seismic isolation devices 3 can be reduced as compared with a conventional unit building in which the seismic isolation devices 3 are installed at the same span as the width of the building unit 1, thereby reducing costs. In addition, since the entire building body is supported by the four frames 2, even if the number of seismic isolation devices 3 is reduced,
The rigidity of the building body is not impaired.

In this case, the two gantry 2 located at the joint of the building unit 1 are connected to separate seismic isolation devices 3 respectively.
Although the example in which the two bases 2 are mounted on the common seismic isolation device 3 is shown, it is possible to further reduce the number of the seismic isolation devices 3 to two.

Next, a method of constructing the unit building H1 according to the first embodiment corresponding to the invention described in claim 3 will be described. Each building unit 1 is previously assembled in a factory as usual, and at this time, the gantry unit 2
a is fixed to the floor beam 13 of each building unit 1. Also, the gantry connecting plate 5 is appropriately fixed to the gantry unit 2a by welding or the like (see FIGS. 6 to 8).

Then, six building units 1 with the gantry units 2a to which the gantry units 2a are fixed are carried to the construction site, and these three building units 1 with the gantry units 2a are arranged side by side, and these gantry units 2a are connected to each other. The gantry connection plate 5 is connected to the longitudinal direction using bolts B and nuts N. Thus, the six gantry units 2
The building units 1 with a are grouped into three units.

On the other hand, eight seismic isolation devices 3 are fixed on the upper surface of the foundation 4. The seismic isolation device 3 is allocated so that the span in the girder direction is about three times the width W1 on the short side of the building unit 1 and the width W on the long side of the building unit 1 in the wife direction.
Make the span approximately equal to 2.

Then, the gantry unit 2 and the building unit 1 which have been massed together are lifted together by a crane or the like and mounted on the four seismic isolation devices 3. In the same manner, another lump of the gantry unit 2 and the building unit 1 are lifted and placed on the remaining four seismic isolation devices 3.

That is, in this construction method, since the seismic isolation device 3 is arranged in the girder direction at a span approximately three times the width W1 of the short side of the building unit 1, the seismic isolation device 3 is placed on the foundation 4. The installation work can be completed in a shorter time than before. Moreover, since the gantry unit 2a is fixed to the floor beam 13 of the building unit 1 in the factory, the work of connecting the gantry unit 2a and the building unit 1 at the construction site can be simplified. That is, the unit building H having the seismic isolation function
1 can be built in a short time.

(Embodiment 2) Next, a unit building according to Embodiment 2 corresponding to the invention described in claims 4 and 5 will be described in detail. In describing the unit building of the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

FIG. 9 is a front view showing a unit building according to the second embodiment, FIG. 10 is a plan view of the unit building showing the first embodiment, and FIG. 11 is a sectional view taken along line XI-XI of FIG. The building body is constituted by arranging a total of four building units 1 in one row, and this building body is installed on a foundation 4 via six seismic isolation devices 3.

The seismic isolation device 3 is arranged at a span approximately twice as long as the width W1 on the short side of the building unit 1 in the wife direction, and substantially equal to the width W2 on the long side of the building unit 1 in the girder direction. They are arranged at equal spans and are fixed to the foundation 4 with anchor bolts A and nuts N, respectively.

Further, between the floor beams 13 of the seam of the building unit 1 located between the seismic isolation devices 3, an iron reinforcing plate 6 is fixed substantially over the entire length thereof. The reinforcing plate 6 is fastened and fixed to the floor beams 13 on both sides with bolts B and nuts N as shown in FIG.

As described above, in the unit building H2 of the second embodiment, since the seismic isolation device 3 is arranged in a span approximately twice as large as the width W1 on the short side of the building unit 1, the seismic isolation device 3 is provided. The number of the seismic isolation devices 3 can be reduced as compared with the conventional unit building in which the is installed at the same span as the width of the building unit 1, whereby the cost can be reduced. Further, since the reinforcing plate 6 is fixed over substantially the entire length between the floor beams 13 of the seam of the building unit 1 located between the seismic isolation devices 3, even if the number of the seismic isolation devices 3 is reduced. ,
The rigidity of the building body is not impaired.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example,
The arrangement and number of building units can be freely set, for example, two or more building units are stacked up and down to form a unit building of two stories or more.

[0031]

As described above, in the unit building according to the first aspect, since the seismic isolation device is arranged at a span longer than the width of the building unit, the seismic isolation device is set to the width of the building unit. The number of seismic isolation devices can be reduced as compared with the conventional unit buildings arranged in the same span, and the effect of reducing costs can be obtained.

In the unit building according to the second aspect,
Since the gantry unit can be fixed to the building unit in the factory and then transported to the construction site, and the gantry unit can be connected at the construction site, the construction procedure can be performed. Can be

According to the construction method of the unit building of the third aspect, the work of installing the seismic isolation device on the foundation can be completed in a shorter time than before, and the mounting of the gantry unit and the building unit can be completed. Since there is no need to perform the joining work at the construction site, an effect is obtained that a low-cost unit building having a seismic isolation function can be constructed in a short period of time.

In the unit building according to the fourth aspect, it is not necessary to provide a frame between the foundation and the seismic isolation device, so that an effect of reducing costs can be obtained.

In the unit building according to the fifth aspect,
Because the seismic isolation devices are arranged in a span longer than the width of the building unit, the number of seismic isolation devices can be reduced compared to conventional unit buildings where the seismic isolation devices are arranged in the same span as the building unit width. Since no frame is required, the cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a unit building according to a first embodiment.

FIG. 2 is a plan view showing a unit building according to the first embodiment.

FIG. 3 is a perspective view showing a building unit.

FIG. 4 is a perspective view showing a gantry.

FIG. 5 is a perspective view showing a connection plate.

FIG. 6 is a perspective view showing a coupling structure between a building unit and a gantry unit.

FIG. 7 is a front view showing a coupling structure between a building unit and a gantry unit.

FIG. 8 is a side view showing a connection structure between a building unit and a gantry unit.

FIG. 9 is a front view showing a unit building according to the second embodiment.

FIG. 10 is a plan view showing a unit building according to the second embodiment.

FIG. 11 is a sectional view taken along line XI-XI of FIG. 10;

[Description of Signs] 1 building unit 2 gantry 2a gantry unit 3 seismic isolation device 4 foundation 5 connecting plate 6 reinforcing plate

Claims (5)

[Claims] 1. A unit building in which a plurality of building units are arranged adjacent to each other and installed on a foundation via a seismic isolation device, wherein the building main body and the seismic isolation device are connected to each other. A unit building, wherein a gantry is provided over substantially the entire length of the building body, and the seismic isolation device is arranged with a span longer than the width of the building unit. 2. The gantry unit according to claim 1, wherein the gantry unit is constituted by gantry units fixed below each of the building units, and the gantry units of adjacently arranged building units are connected to each other. Unit building. 3. A gantry unit having a gantry unit having a length substantially equal to the width of the building unit and carrying a plurality of building units with a gantry unit fixed below a floor beam to a construction site. A unit characterized in that they are connected to each other in the longitudinal direction, the gantry units are lifted together with the building units, and placed on a seismic isolation device installed on a foundation with a span longer than the width of the building units. Building construction method. 4. A unit building in which a plurality of building units are arranged adjacent to each other and which is installed on a foundation via a seismic isolation device, wherein the building is located between the seismic isolation devices. A unit building, wherein a reinforcing plate is fixed between the floor beams of the unit over substantially the entire length thereof. 5. The unit building according to claim 4, wherein the seismic isolation device is arranged at a span longer than the width of the building unit.