JP2001317146A - Frame for base isolation building, its assembling method, and base isolation building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame for a base isolation building requiring no space for assembling it and requiring no heavy machine such as a large crane for hoisting the assembled frame and to provide its assembling method and the base isolation building arranged with pipes on the frame. SOLUTION: This frame 10 for the base isolation building provided between base isolation devices 3 and 4 fixed on a foundation 2 and an upper structural body 5 located on the base isolation devices 3 and 4 comprises a plurality of members 11. The members 11 are connected together in sequence in a mounted state on the base isolation devices 3 and 4, and the frame 10 is integrated on the base isolation devices 3 and 4. The frame 10 is formed with an H-steel, and pipes 20, 21, 22 are provided between flanges 10a and 10b and a web 10c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base for a base-isolated building, a method of assembling the base, and a base-isolated building, and more particularly, to a base located between a base-isolated device fixed on a foundation and a superstructure. The present invention relates to a method for efficiently assembling a steel gantry and a seismic isolation building having a steel gantry.

[0002]

2. Description of the Related Art Conventionally, as a stand for such a seismic isolation building, there is a base structure of a detached house disclosed in Japanese Patent Application Laid-Open No. 10-227038. In the technology described in this publication, a seismic isolation member is installed on the upper surface of the foundation, and a steel structure base that is integrated on the seismic isolation member is installed to integrate the entire structure, Furthermore, a base is installed on this steel structure base, on which a single-family house is constructed. In a detached house having the above-mentioned seismic isolation member, a system having a gantry between the seismic isolation member and the upper structure is used. Not limited to this example, seismically isolated houses currently on the market have a rigid first floor, so such a steel frame is generally present between the seismic isolation member and the upper structure. .

[0003]

A steel structural base for a base-isolated house having the above structure is usually assembled and integrated at a site, and the integrated base is lifted by a crane and installed on a base-isolated member. are doing. For this reason, there is a problem that a large space for assembling the gantry is required next to the building space. Further, there is a problem that a heavy machine such as a crane for lifting the assembled base is required. On the other hand, in a base-isolated house provided with the above-mentioned steel structure base, water supply, gas pipes, pipes such as sewers are connected to the base, and the support tends to be complicated, and it is difficult to take up space for the pipes. There was a problem that the appearance was bad.

The present invention has been made in view of such a problem, and an object thereof is to provide a seismic isolation device which does not require a space for assembling a gantry next to a building space and does not require heavy equipment. An object of the present invention is to provide a building gantry and a method of assembling the same. Another object of the present invention is to provide a seismic isolated building having a stand, which can easily support pipes, does not require extra piping space, and has a good appearance.

[0005]

In order to achieve the above object,
A base for a base-isolated building according to the invention of claim 1 is a base for a base-isolated building interposed between a base-isolated device fixed on a foundation and an upper structure located on the base-isolated device. A gantry, wherein the gantry is composed of a plurality of members, and the members are provided with connecting portions that are connected to each other while being mounted on the seismic isolation device.

According to this configuration, a plurality of members constituting the gantry are placed on the seismic isolation device fixed on the foundation, and the connecting portions of the members are interconnected to be integrated on the seismic isolation device. So there is no need for assembly space next to the building space,
Also, no heavy equipment such as a large crane is required, and the gantry can be easily assembled only with a simple crane or jack that mounts a plurality of members on the seismic isolation device.

According to a second aspect of the present invention, there is provided a method for assembling a base for a base-isolated building, comprising the steps of:
A method for assembling a gantry for a seismic isolation building interposed between an upper structure located on the seismic isolation device, wherein a plurality of members constituting the gantry are sequentially placed on the seismic isolation device. The plurality of members are sequentially connected to each other, and the gantry is integrated on the seismic isolation device.

According to this structure, the plurality of members constituting the gantry are sequentially placed on the seismic isolation device fixed on the foundation, and the plurality of members are connected to be integrated on the seismic isolation device. ,
There is no need for assembly space next to the building space, and no heavy equipment such as large cranes is required, and the gantry can be easily assembled with only a simple crane or jack that places multiple members on the seismic isolation device. it can. If individual members that make up the gantry placed on the seismic isolation device are supported by temporary support means such as jacks so that they can be stably supported by the seismic isolation device, The device may be prevented from being damaged, and the members may be easily connected to each other.

The seismic isolation building according to the invention of claim 3 is:
A seismic isolation building having a gantry interposed between a seismic isolation device fixed on a foundation and an upper structure located on the seismic isolation device, wherein the gantry has an upper and lower flange and a web. A pipe is provided in a space surrounded by the upper and lower flanges and the web. According to this configuration, since the pipe is provided in the space of the H-section steel, the support of the pipe is easy, and the space for the pipe can be reduced.

The seismic isolation building according to the invention of claim 4 is:
In claim 3, the gantry is provided with a decorative plate covering a space between the upper flange and the lower flange on the outer wall side. According to this configuration, the piping in the space of the H-shaped steel can be covered, and the appearance of the building can be improved.

A seismic isolation building according to the invention of claim 5 is:
5. The pipe structure according to claim 4, wherein the upper structure includes a pipe space protruding from an outer wall surface and extending in a vertical direction, connecting a pipe in the pipe space and a pipe in the space of the H-shaped steel, and opening the pipe space. A pipe cover is provided to cover the opening and the opening of the decorative board. According to this configuration, the pipe that extends up and down the outer wall surface of the upper structure can be covered by the pipe space, and the connecting portion between the pipe in the pipe space and the pipe located in the space of the H-section steel is covered with the pipe cover. Thereby, the appearance of the building can be improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a base-isolated building having a base for a base-isolated building according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of a seismic isolation building according to the present embodiment, in which a part (a superstructure part and the like) is omitted, and FIG.
3 is a plan view of a state where the gantry of FIG. 1 is disassembled, and FIG. 4 is an enlarged view of a connecting portion of the gantry. In FIGS. 1 and 2, a base-isolated house 1 includes a base 2, base-isolation devices 3 and 4 installed on the base 2, an upper structure 5, and base-isolation devices 3 and 4.
And a frame 10 such as a steel frame interposed between the upper structure 5 and the upper structure 5.

The foundation 2 is made of reinforced concrete or the like, and may be of an appropriate form such as a cloth foundation or an independent footing foundation. In this embodiment, two types of seismic isolation devices 3 installed on the foundation 2 are used. One seismic isolation device 3 is formed of a cross linear bearing, and does not transmit the energy of the earthquake to the upper structure 5 due to the relative movement between the upper structure 5 and the foundation 2 during an earthquake. The cross linear bearing seismic isolation device 3 prepares two linear guides that allow the block body to slide with extremely low resistance to the linear rail, and turns the linear guide located above upside down so that the rails are orthogonal to each other. The blocks are connected to each other as described above. The seismic isolation device 3 is set to be movable about 30 cm left and right with respect to the center, depending on the magnitude of the earthquake.

The other seismic isolation device 4 uses a laminated rubber in which rubber and steel plate are laminated, and is deformed during an earthquake to attenuate seismic energy. A lead plug is provided at the center of the rubber and steel plate. It is also possible to use a built-in one having an improved damping performance. The seismic isolation house 1 of the present embodiment uses a cross linear bearing seismic isolation device 3 and a laminated rubber seismic isolation device 4 together.

As the upper structure 5, an appropriate structure such as a wooden structure, a steel frame structure, a steel frame unit or the like is employed.
The steel gantry 10 is configured by connecting a plurality of members 11 to 14 formed by welding H-shaped steel, and each of the members is provided with a connecting portion connected to each other at an end portion. Is formed by connecting ten members 11 to 14. The steel gantry 10 supports the upper structure 5 against the ground that moves during an earthquake, and the entire load of the upper structure 5, furniture,
It has a predetermined strength to support the entire load of a resident person or the like. In the present embodiment, members formed by welding H-shaped steel pieces each having a 250 mm square, a flange thickness of 14 mm, and a web thickness of about 9 mm are connected.

The four members 11 located at the corners of the steel frame base 10 have a shape in which a fire beam is provided on an L-shaped member. 3, two members 12 for connecting the corner members 11 in the vertical direction in FIG. 3 are composed of two equal-length parallel pieces and orthogonal sides welded to the parallel pieces. Two members 13 for connecting the corner member 11 in the left-right direction of FIG.
Has a substantially T-shape with a long right side. The two members 14 located at the center have a long cross shape on the right side.

The end of each of the members 11 to 14 is provided with a connecting portion provided with a hole penetrating a bolt and nut for connecting the members. As shown in detail in FIG. 4, these ten members 11 to 14 are connected to the connecting plate 1 for connecting the flanges.
5 and a connecting plate 16 for connecting the web, the bolt and the nut 17 are connected and fixed, and one steel frame
Is formed as The steel frame base 10 of the present embodiment is shown in FIG.
In FIG. 5, there is provided a steel member 18 for connecting the H-shaped steel in the left-right direction.
~ 14 H-shaped steels.

On the steel frame base 10 thus formed,
For example, a plurality of building units 6 having a steel frame structure are assembled to form the upper structure 5. The steel gantry 10 is given strength to support the entire load of the upper structure 5. This steel frame base 10 is supported by twelve cross linear bearing seismic isolation devices 3 installed on the foundation 2 and eight seismic isolation devices 4. In this example, at least one seismic isolation device 3 corresponds to one member. Further, the seismic isolation device 4 composed of two columnar laminated rubber pieces is used for the steel frame base 10.
Eight are interposed between the base 2 and the base 2 so as to attenuate relative movement during an earthquake or the like. Therefore, even if the ground and the foundation 2 move relative to the upper structure 5 during an earthquake, the seismic isolation device 3 does not transmit the relative movement to the upper structure 5, and the seismic isolation device 4 attenuates the relative movement. Let it absorb seismic energy. The steel gantry 10 supports the upper structure 5 and follows the relative movement to prevent the upper structure 5 from being destroyed by the vibration of the earthquake.

A method of assembling the steel gantry 10 for a base-isolated building according to this embodiment having the above-described configuration will be described below. The steel gantry 10 is divided into ten members 11 to 14 and carried into a construction site. The foundation 2 is completed on the construction space at the construction site, and the seismic isolation devices 3 and 4
Is fixedly installed. Members 11 to 11 constituting the gantry 10
14 are mounted on the seismic isolation device 3 one by one. That is,
One member 11 is, as shown in FIG.
It is placed on top and supported horizontally by jacks 7 and the like. A plurality of jacks 7 are prepared as needed, and support the member 11 in a stable state. For this reason, breakage of the seismic isolation devices 3 and 4 due to work failure can be prevented. Jack 7
Is appropriately used such as a mechanical type or a hydraulic type.

Then, the next member 12 is placed on the adjacent seismic isolation device 3 and similarly supported by the jack 7 in a horizontal state. Thereafter, the connecting portion between the ends of the two members 11 and 12 is connected to the bolt nut 1 using the connecting plates 15 and 16.
7 to connect the two members 11 and 12 together. In this way, the operation of placing the adjacent members on the seismic isolation device 3 and connecting them is repeated, and the steel frame base 10 is completed. Since the steel frame base 10 is divided into a size and a shape that can be easily carried in and is assembled on the seismic isolation device 3, a large assembly space adjacent to the building space is unnecessary, and heavy machinery such as a large-scale crane is not required.

Next, the seismic isolation house 1 using the above-mentioned steel frame 10, particularly the piping structure of the seismic isolation house 1, is shown in FIG.
This will be described in detail with reference to FIG. FIG. 7 is an exploded perspective view showing a structural part of the base-isolated house and a piping structure, and FIG. 8 is an exploded perspective view showing a partially assembled state in an assembled state. 7 and 8 do not show the base part of the base-isolated house 1. Seismically isolated house 1
As described above, the seismic isolation devices 3 and 4 fixed on the foundation 2
And an upper structure 5 located on the seismic isolation device 1 with a steel frame 10 interposed therebetween. In other words, the seismic isolation devices 3 and 4 are fixed on the foundation 2,
A steel frame 10 is located on the upper side, and an upper structure 5 composed of a building unit 6 is installed on the steel frame 10. The building unit 6 includes columns 6a, beams 6b, and the like.

The steel frame base 10 is made of an H-shaped steel as described above, and the H-shaped steel is composed of an upper flange 10a and a lower flange 1a.
0b and a central web 10c, and a space is provided between the upper flange 10a and the lower flange 10b.
And the water supply pipe 20 connected to the water supply in this space,
Pipes such as a drain pipe 21 and a gas pipe 22 are provided, and are fixed by fittings 25 and the like. The mounting bracket 25 is made of a metal plate material. A plurality of holding holes 26 a through which pipes pass are formed in the center pipe holding section 26, and a fixing section 27 for fixing to an H-shaped steel web is provided on the back side of the pipe holding section 26. It is formed by bending, and a decorative plate 3 described later is provided on the near side of the pipe holding portion 26.
A mounting portion 28 to which the “0” is attached is formed by bending the fixing portion 27 on the opposite side.

For example, in the case of the water supply pipe 20 for water supply, the pipe is arranged horizontally along the outside of the H-section steel web 10c, is piped into the room through a through hole (not shown) of the web, and is piped to the tap of the water supply. . The gas pipe 22 is also provided in the same manner as the water supply pipe 20. The drainage pipe 21 is provided with the water supply pipe 20.
The outer diameter becomes larger as compared with, for example, pipes are vertically arranged from the second floor to the first floor along the outer wall of the building, and the metal fitting 21 is attached to the outer wall.
The pipe is horizontally fixed to the space of the H-shaped steel using the elbow joint 21b. When connecting the water distribution pipe to the underground, the pipe is again vertically laid using the elbow joint 21b, and connected to the underground pipe via a flexible joint (not shown).

The piping fixed to the space of the H-shaped steel of the steel frame base 10 is covered with a decorative plate 30. The decorative plate 30 is formed by bending the upper and lower ends of a metal plate material, extruding plastic or aluminum, or the like, and has an outer surface with good appearance. The decorative plate 30 is fixed to the mounting portion 28 of the mounting bracket 25 of the pipe with screws or the like, and covers the internal pipe. The elbow joint 21b of the drainage pipe 21 projects from the opening 30a of the decorative plate 30.

The vertical portion of the drainage pipe 21 from the first floor to the second floor is fixed to the outer wall 6c of the building by a metal fitting 21a or the like.
A pipe space 31 made of a metal plate or the like is formed outside the outer wall 6c to cover the pipe 21, and the pipe space 31 protrudes from the surface of the outer wall 6c and extends vertically. The pipe space 31 is open at upper and lower portions, and a pipe cover 32 is fixed so as to cover the opening 31 a and the opening 30 a between the decorative board 30. Although the pipe cover 32 is illustrated as being fixed below the pipe space 31, a similar pipe cover is fixed upside down also above.

The pipe cover 32 is formed of, for example, a sheet metal or is formed by injection molding from plastic, and the opening at the upper end is fitted to the lower end of the pipe space 31.
The side opening of the pipe cover 32 has a shape that closes the opening 30 a from which the pipe projects from the decorative plate 30. As described above, the pipe cover 32 connects the decorative board 30 and the pipe space 31 to cover the drainage pipe 21 and the like, but may also cover the water supply pipe 20 and the gas pipe 22 and the like.

The mounting of the pipes 20, 21, 22 is not limited to the mounting bracket 25 described above, but may be performed by using a U-shaped bracket 35 having a U-shape and having threads formed at both ends as shown in FIG. Pipe 2 into the mounting hole formed in the H-section steel web 10c.
1 may be attached. Further, the example in which the gantry 10 is made of a steel frame has been described, but a wooden frame may be used as long as it can support the upper structure 5. Furthermore, although the example of the base-isolated house was shown as the base-isolated building, the present invention is not limited to the house, but the present invention can be applied to a building such as a warehouse.

[0028]

As can be understood from the above description, according to the gantry for a base-isolated building according to the first aspect of the present invention, the gantry can be divided into a plurality of members and carried to the site, so that the base can be mounted on the base. In order to place multiple members in sequence and connect the connecting parts at the ends of the members and integrate them on the seismic isolation device, there is no need for assembly space next to the building space, and after integrating, the seismic isolation device Since the system is not installed on the top, the gantry can be assembled without requiring a large heavy machine such as a large crane.

According to the method for assembling a base for a base-isolated building according to the second aspect of the present invention, the base can be divided into a plurality of members and carried to the site, and the plurality of members are sequentially placed on the base-isolation device. However, since a plurality of members are connected and integrated on the seismic isolation device, no assembly space is required next to the building space. Further, the gantry can be assembled without requiring a large heavy machine such as a large crane. When individual members are placed on the seismic isolation device and supported by jacks or the like, breakage of the seismic isolation device due to work failure can be prevented, and the members can be easily connected to each other.

According to the seismic isolation building of the third aspect of the present invention, the gantry is made of H-shaped steel having upper and lower flanges and a web, and piping is arranged in a space surrounded by the upper and lower flanges of the H-shaped steel and the web. Because of this, the piping space can be reduced and the space can be effectively used, and the support is easy because there is a base near the piping.

According to the seismic isolation building of the fourth aspect of the present invention, the space between the upper flange and the lower flange on the outer wall side of the H-shaped steel is covered with the decorative plate, thereby covering the piping in the space of the H-shaped steel. Can improve the appearance of the building.

According to the seismic isolation building of the fifth aspect of the present invention, the pipe connecting the upper and lower floors extending up and down the outer wall surface of the upper structure is covered with the pipe space and the pipe cover, so that the external appearance of the building is obtained. Can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view in which a part of an embodiment of a base-isolated building including a base for a base-isolated building according to the present invention is partially omitted.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a plan view of a state where the gantry of FIG. 1 is disassembled.

4A is an enlarged plan view showing a connection portion between a plurality of members shown in FIG. 1, and FIG. 4B is a side view of FIG.

5A is a plan view showing a fixed state of a member and a steel reinforcement material, and FIG. 5B is a front view of FIG.

FIG. 6 is an operation explanatory view showing an assembled state of the gantry.

FIG. 7 is a developed perspective view showing a piping structure in the base-isolated house according to the present invention.

FIG. 8 is a developed perspective view showing an assembled state of the base-isolated house according to the present invention.

FIG. 9 is a cross-sectional view showing another example of installing a pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seismic isolation building 2 Foundation 3, 4 Seismic isolation device 5 Superstructure 10 Steel frame (gantry) 11-14 Plural members 15, 16 Connection plate 17 Bolt nut 10a, 10b Flange 10c Web 20, 21, 22 Piping 25, 35 Mounting bracket 30 Decorative plate 30a, 31a Opening 31 Pipe space 32 Pipe cover

Claims (5)

[Claims] 1. A gantry for a seismic isolation building interposed between a seismic isolation device fixed on a foundation and an upper structure located on the seismic isolation device, wherein the gantry includes a plurality of members. Wherein the member is provided at its end with a connecting portion that is connected to each other while being mounted on the seismic isolation device. 2. A method of assembling a base for a seismic isolation building interposed between a seismic isolation device fixed on a foundation and an upper structure located on the seismic isolation device, comprising: A base for a base-isolated building, wherein a plurality of constituent members are sequentially placed on the seismic isolation device, the plurality of members are sequentially connected, and the base is integrated on the seismic isolation device. How to assemble. 3. A seismic isolation building having a gantry interposed between a seismic isolation device fixed on a foundation and an upper structure located on the seismic isolation device, wherein the gantry comprises upper and lower flanges, A seismic isolation building comprising an H-shaped steel having a web, and piping arranged in a space surrounded by the upper and lower flanges and the web. 4. The base-isolated building according to claim 3, wherein the mount includes a decorative plate covering a space between the upper flange and the lower flange on the outer wall side. 5. The upper structure has a pipe space protruding from an outer wall surface and extending in a vertical direction, and connects a pipe in the pipe space with a pipe in the space of the H-shaped steel,
The seismic isolation building according to claim 4, further comprising a pipe cover that covers an opening of the pipe space and an opening of the decorative board.