JP2022090954A - Demolition tool and demolition tool set - Google Patents

Abstract

To provide a demolition tool and a demolition tool set capable of ensuring safety at demolition work during demolition of a base isolation building.SOLUTION: A demolition tool 2 comprises: an insertion part 21 placed on an upper surface 101C of an outer peripheral foundation 1011 in the state of being inserted into a gap GP between an outer peripheral foundation 1011 and an outer peripheral sill beam 1021; a first foundation opposite part 221 extending from one end of the insertion part 21 to face the side surface of the outer peripheral foundation 1011; and a first beam opposite part 231 extending from the other end of the insertion part 21 to a side opposite to the first foundation opposite part 221 to face the side surface of the outer peripheral sill beam 1021. Horizontal displacement of the outer peripheral sill beam 1021 with respect to the outer peripheral foundation 1011 is regulated in a state in which the first foundation opposite part 221 is in contact with the side surface of the outer peripheral foundation 1011 and the first beam opposite part 231 is in contact with the side surface of the outer peripheral sill beam 1021.SELECTED DRAWING: Figure 1

Description

The present invention relates to a demolition tool and a demolition tool set used at the time of demolition of a seismic isolated building.

A seismic isolated building is known that is equipped with a seismic isolation device that supports the main body of the building so as to insulate it from the ground, and makes it difficult for the shaking of the ground due to an earthquake or the like to be transmitted to the main body of the building. Seismic isolation devices used in such seismic isolation buildings are disclosed in, for example, Patent Documents 1 to 6.

The seismic isolation device absorbs the vibration energy of the ground and changes the shaking of the building body into a gentle rolling motion, thereby suppressing the collapse and damage of the building and also suppressing the falling of furniture inside the building. can do.

Japanese Unexamined Patent Publication No. 9-189143 Japanese Unexamined Patent Publication No. 2001-55842 Japanese Unexamined Patent Publication No. 2007-277810 Japanese Patent No. 5339521 Japanese Patent No. 6567207 Special Fair 7-35700 Gazette

By the way, in the demolition work for dismantling a seismic isolated building, an excessive load is applied to the building body by a heavy machine, and the building body is cut, pulled, or pushed in. If an excessive load is applied to the building body in such demolition work, the building body supported by the seismic isolation device may cause unexpected rolling. In this case, an unexpected part of the building body may collapse, which may reduce the safety of the demolition work.

The present invention has been made in view of such circumstances, and an object thereof is a demolition tool and a demolition tool capable of ensuring the safety of demolition work at the time of demolition of a demolition building. To provide a set.

The dismantling tool according to one aspect of the present invention includes a seismic isolation device arranged in an area surrounded by an outer peripheral foundation formed on the ground, a seismic isolation base beam connected to the seismic isolation device, and the outer periphery. A seismic isolated building having an outer peripheral foundation beam arranged facing the upper side in the vertical direction with respect to the foundation, and a building body supported from the lower side by the seismic isolated foundation beam and the outer peripheral foundation beam. It is a tool used at the time of dismantling. This dismantling tool is inserted into the gap between the outer peripheral foundation and the outer peripheral foundation beam in the insertion direction along the thickness of the outer peripheral foundation, and is placed on the upper surface of the outer peripheral foundation. A first foundation facing portion that extends from one end and faces the side surface of the outer peripheral foundation, and a first that extends from the other end of the insertion portion to the side opposite to the first foundation facing portion and faces the side surface of the outer peripheral foundation beam. It is provided with a beam facing portion. Then, in a state where the first foundation facing portion is in contact with the side surface of the outer peripheral foundation and the first beam facing portion is in contact with the side surface of the outer peripheral foundation beam, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation is restricted. do.

According to this dismantling tool, the first foundation facing portion faces the side surface of the outer peripheral foundation in a state where the insertion portion is inserted into the gap between the outer peripheral foundation and the outer peripheral foundation beam and placed on the upper surface of the outer peripheral foundation. , The first beam facing portion faces the side surface of the outer peripheral foundation beam. In such a configuration, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation is regulated in a state where the first foundation facing portion is in contact with the side surface of the outer peripheral foundation and the first beam facing portion is in contact with the side surface of the outer peripheral foundation beam. Can be done. By restricting the displacement of the outer peripheral base beam, the horizontal displacement of the building body supported by the outer peripheral base beam and the seismic isolated base beam is also regulated. As a result, in the demolition work for dismantling the seismic isolated building, it is possible to prevent the building body in a state supported by the seismic isolated base beam connected to the seismic isolation device from causing unexpected rolling. Therefore, it is possible to prevent the unexpected part of the building body from collapsing during the demolition work, and it is possible to ensure the safety of the demolition work.

The dismantling tool has a second foundation facing portion extending from the other end of the insertion portion in the same direction as the first foundation facing portion and facing the side surface of the outer peripheral foundation, and the first beam from one end of the insertion portion. A second beam facing portion extending in the same direction as the facing portion and facing the side surface of the outer peripheral base beam is further provided. Then, in a state where the second foundation facing portion is in contact with the side surface of the outer peripheral foundation and the second beam facing portion is in contact with the side surface of the outer peripheral foundation beam, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation is restricted. do.

In this embodiment, the first foundation facing portion and the second foundation facing portion sandwich the outer peripheral foundation in a state where the insertion portion is inserted into the gap between the outer peripheral foundation and the outer peripheral foundation beam and placed on the upper surface of the outer peripheral foundation. The outer peripheral foundation faces both side surfaces, and the first beam facing portion and the second beam facing portion face both side surfaces of the outer peripheral foundation beam. In such a configuration, in addition to the state where the first foundation facing portion is in contact with the side surface of the outer peripheral foundation and the first beam facing portion is in contact with the side surface of the outer peripheral base beam, the second foundation facing portion is in contact with the side surface of the outer peripheral foundation. Even in a state where the second beam facing portion is in contact with the side surface of the outer peripheral foundation beam, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation can be regulated. As a result, in the demolition work to dismantle the seismic isolated building, it is possible to more reliably suppress the unexpected rolling of the building body supported by the seismic isolated base beam connected to the seismic isolated device. Can be done.

In the above dismantling tool, the first foundation facing portion and the second beam facing portion are integrally formed, and are connected and fixed to one end of the insertion portion, and the second foundation facing portion is connected and fixed. And the first beam facing portion are integrally formed, and are connected and fixed to the other end of the insertion portion.

In this embodiment, an integral body of the first foundation facing portion and the second beam facing portion is connected and fixed to one end of the insertion portion, and the integral body of the second foundation facing portion and the first beam facing portion is the other end of the insertion portion. A dismantling tool can be realized by a simple structure that is connected and fixed to.

In the above dismantling tool, the separation distance between the first foundation facing portion and the first beam facing portion along the insertion direction is set so as to satisfy the following equation (1).
{(D-T1) + (D-T2)} <A ... (1)

In the formula (1), "D" indicates the separation distance along the insertion direction between the first foundation facing portion and the first beam facing portion, "T1" indicates the thickness of the outer peripheral foundation, and "T2" indicates the thickness of the outer peripheral foundation. The thickness along the insertion direction of the outer peripheral beam is shown, and "A" indicates the horizontal movement allowance of the building body by the seismic isolation device.

In this aspect, the separation distance along the insertion direction between the first foundation facing portion and the first beam facing portion is set based on the horizontal movement allowance of the building body by the seismic isolation device. As a result, when the outer peripheral foundation beam tries to be displaced with respect to the outer peripheral foundation beyond the movement allowance of the seismic isolation device, the first foundation facing portion is surely in contact with the side surface of the outer peripheral foundation and the first beam is opposed to the outer peripheral foundation. The part touches the side surface of the outer peripheral foundation beam. Therefore, the horizontal displacement amount of the outer peripheral foundation beam with respect to the outer peripheral foundation can be made smaller than the movement allowable amount of the seismic isolation device.

In the above dismantling tool, the insertion portion and the facing portion of the first foundation facing portion and the first beam facing portion on the side arranged inside the outer peripheral foundation are the vertical direction and the insertion direction. In the orthogonal direction, it has a width dimension shorter than the dimension of the gap between the outer peripheral foundation and the outer peripheral foundation beam.

In this embodiment, when the dismantling tool is placed in the gap between the outer peripheral foundation and the outer peripheral base beam so that the insertion portion is placed on the upper surface of the outer peripheral foundation, the insertion portion and the first foundation facing portion and the first beam facing portion are arranged. Of the portions, the facing portion on the side arranged inside the outer peripheral foundation can be passed through the gap from the outside to the inside of the outer peripheral foundation and the outer peripheral foundation beam. Then, the insertion portion is located in the gap, and the facing portion of the first foundation facing portion and the first beam facing portion on the side arranged inside the outer peripheral foundation is located inside the outer peripheral foundation. By rotating the tool 90 degrees, the dismantling tool is placed in the gap so that the first foundation facing portion faces the side surface of the outer peripheral foundation and the first beam facing portion faces the side surface of the outer peripheral base beam. be able to.

In the above dismantling tool, the insertion portion is the outer peripheral foundation in a state where the first foundation facing portion faces the side surface of the outer peripheral foundation and the first beam facing portion faces the side surface of the outer peripheral base beam. It is configured to have a mounting portion having a surface extending parallel to the upper surface of the above.

In this aspect, the insertion portion is configured to have a mounting portion having a surface extending parallel to the upper surface of the outer peripheral foundation, so that a stable mounting state can be maintained on the upper surface of the outer peripheral foundation. .. As a result, in the dismantling tool, when the insertion portion is placed on the upper surface of the outer peripheral foundation, the first foundation facing portion faces the side surface of the outer peripheral foundation, and the first beam facing portion faces the side surface of the outer peripheral foundation beam. The facing posture can be stably maintained.

The dismantling tool set according to another aspect of the present invention includes a seismic isolation device arranged in an area surrounded by an outer peripheral foundation formed on the ground, a seismic isolation base beam connected to the seismic isolation device, and the above-mentioned seismic isolation base beam. A seismic isolated building having an outer peripheral foundation beam arranged so as to face the upper side in the vertical direction with respect to the outer peripheral foundation, and a building body supported from the lower side by the seismic isolated foundation beam and the outer peripheral foundation beam. It is a set of tools used at the time of dismantling. This dismantling tool set connects the above-mentioned dismantling tools and a plurality of the above-mentioned dismantling tools so that the plurality of the dismantling tools are arranged at intervals in the arrangement direction along the outer peripheral foundation and the outer peripheral foundation beam. It is provided with a connecting member.

According to this dismantling tool set, a plurality of dismantling tools are connected by a connecting member in a state of being arranged at intervals in the arrangement direction along the outer peripheral foundation and the outer peripheral foundation beam. That is, by using the demolition tool set in the demolition work of the seismic isolated building, a plurality of demolition tools connected by the connecting member can be arranged in the gap between the outer peripheral foundation and the outer peripheral foundation beam. As a result, in each dismantling tool, the first foundation facing portion faces the side surface of the outer peripheral foundation and the first beam facing portion faces the side surface of the outer peripheral foundation beam in a state where the insertion portion is placed on the upper surface of the outer peripheral foundation. It is possible to maintain a more stable posture facing the beam.

In the above-mentioned dismantling tool set, the connecting member can connect the portions located outside the outer peripheral foundation and the outer peripheral foundation beam in the plurality of the dismantling tools.

In this aspect, in a plurality of dismantling tools arranged in the gap between the outer peripheral foundation and the outer peripheral foundation beam, the portions located outside the outer peripheral foundation and the outer peripheral foundation beam are connected to each other by a connecting member. That is, when a plurality of dismantling tools are connected by a connecting member, they can be connected from the outside of the outer peripheral foundation and the outer peripheral foundation beam.

In the above dismantling tool set, the connecting member connects each of the plurality of dismantling tools so as to be able to change the posture by rotation around a rotation axis extending in the vertical direction and the direction orthogonal to the arrangement direction.

In this aspect, in a state where a plurality of dismantling tools are connected by a connecting member, each of the plurality of dismantling tools can be rotated to change the posture.

As described above, according to the present invention, it is possible to provide a demolition tool and a demolition tool set capable of ensuring the safety of demolition work at the time of demolition of a seismic isolated building.

It is a figure which shows the state which applied the dismantling tool set which concerns on 1st Embodiment of this invention at the time of dismantling of a seismic isolated building. It is the figure which looked at the state which applied the dismantling tool set which concerns on 1st Embodiment at the time of dismantling of a seismic isolated building from above. It is a perspective view of the dismantling tool constituting the dismantling tool set which concerns on 1st Embodiment. It is a perspective view which shows the state which each dismantling tool took a displacement regulation posture in the dismantling tool set which concerns on 1st Embodiment. It is a perspective view which shows the state which each dismantling tool takes an insertable posture in the dismantling tool set which concerns on 1st Embodiment. It is a perspective view which shows the dismantling tool set which concerns on 2nd Embodiment.

Hereinafter, the dismantling tool and the dismantling tool set according to the embodiment of the present invention will be described with reference to the drawings.

(First Embodiment)
With reference to FIGS. 1 and 2, a state in which the dismantling tool set 1 provided with the dismantling tool 2 according to the first embodiment is applied at the time of dismantling the seismic isolated building 100 will be described. Prior to explaining the dismantling tool set 1 and the dismantling tool 2, the seismic isolated building 100 will be described.

The seismic isolated building 100 is, for example, a seismic isolated house. The seismic isolated building 100 includes a foundation 101, a base beam 102, a seismic isolation device 103, and a building body 104.

The foundation 101 is installed on the ground G so as to straddle the ground level GL in the vertical direction H1 (vertical direction). The foundation 101 includes an outer peripheral foundation 1011 and a seismic isolation foundation 1012.

The outer peripheral foundation 1011 is made of, for example, concrete. The outer peripheral foundation 1011 is formed on the ground G and constitutes the outer shell of the foundation 101. That is, the seismic isolated building 100 is constructed on the ground G in the area surrounded by the outer peripheral foundation 1011. The outer surface 101A and the inner surface 101B of the outer peripheral foundation 1011 have a vertical surface extending perpendicular to the ground G. The upper surface 101C of the outer peripheral foundation 1011 is a surface connecting the upper end edges of the outer surface 101A and the inner surface 101B, and is a horizontal plane extending horizontally parallel to the ground G.

The seismic isolation foundation 1012 is made of, for example, concrete. The seismic isolation foundation 1012 is provided in the area surrounded by the outer peripheral foundation 1011 on the ground G. The seismic isolation foundation 1012 defines the installation location of the seismic isolation device 103 in the area surrounded by the outer peripheral foundation 1011. The location of the seismic isolation foundation 1012 in the area surrounded by the outer peripheral foundation 1011 is determined according to the structure of the building body 104.

The base beam 102 is a beam that is connected and fixed to the lower end of the building body 104 and supports the building body 104 from below. The base beam 102 includes an outer peripheral base beam 1021 and a seismic isolated base beam 1022. The outer peripheral base beam 1021 and the seismic isolated base beam 1022 are connected to each other so that their respective upper surfaces for supporting the building main body 104 are included in the same horizontal plane parallel to the ground G.

The outer peripheral base beam 1021 is configured by connecting a plurality of steel materials, for example. The outer peripheral foundation beam 1021 is a foundation beam arranged so as to face the upper side in the vertical direction H1 with respect to the outer peripheral foundation 1011. The outer peripheral base beam 1021 is connected and fixed to the outer peripheral edge portion at the lower end portion of the building body 104. The seismic isolation base beam 1022 is configured by connecting a plurality of steel materials, for example. The seismic isolation base beam 1022 is a base beam connected to the seismic isolation bearing 1031 on the upper side of the seismic isolation device 103. The seismic isolation base beam 1022 is connected and fixed to the inner region of the outer peripheral edge portion at the lower end portion of the building body 104.

The building main body 104 is supported from below by the outer peripheral base beam 1021 and the seismic isolated base beam 1022 in a state where the outer peripheral base beam 1021 and the seismic isolated base beam 1022 are connected and fixed.

The seismic isolation device 103 is installed on the seismic isolation foundation 1012. The seismic isolation device 103 is a device that supports the building main body 104 connected and fixed to the outer peripheral base beam 1021 and the seismic isolation base beam 1022 so as to be insulated from the ground G. The seismic isolation device 103 makes it difficult for the shaking of the ground G due to an earthquake or the like to be transmitted to the building body 104. The seismic isolation device 103 absorbs the vibration energy of the ground G and changes the vibration of the building body 104 into a gentle rolling motion (horizontal vibration). That is, the seismic isolation device 103 connects and fixes the building main body 104 to the outer peripheral base beam 1021 and the seismic isolation base beam 1022 so that the horizontal movement of the building main body 104 falls within the predetermined movement allowable range. To support. As a result, the seismic isolation device 103 suppresses the collapse or damage of the building main body 104, and also suppresses the fall of furniture or the like inside the building main body 104.

The seismic isolation device 103 includes a seismic isolation bearing 1031. The seismic isolation bearing 1031 is connected and fixed to the seismic isolation base beam 1022, and supports the seismic isolation base beam 1022 from below. The seismic isolation bearing 1031 supports the seismic isolation base beam 1022 from below so that a gap GP is generated between the outer peripheral foundation beam 1021 coupled to the seismic isolation base beam 1022 and the outer peripheral foundation 1011. As a result, the seismic isolation bearing 1031 insulates the building body 104 connected and fixed to the outer peripheral base beam 1021 and the seismic isolation base beam 1022 from the ground G.

The structure of the seismic isolation bearing 1031 is not particularly limited, and a structure selected from rolling bearings, sliding bearings, and the like can be adopted. The rolling bearing is configured so that a corundum rolls on a concave saucer, and there are a monocyte type that uses one corundum and a compound ball type that uses two types of corundum, large and small. A sliding bearing is configured so that the bearing slides on a plate or plate. Note that FIG. 1 shows a seismic isolation bearing 1031 that employs a double-ball type rolling bearing.

In the dismantling work of dismantling the seismic isolated building 100 equipped with the seismic isolation device 103 as described above, an excessive load is applied to the building body 104 by a heavy machine, and the building body 104 is cut, pulled, or pushed in. Work such as is done. When an excessive load is applied to the building body 104 in such demolition work, the building body 104 in a state of being supported by the seismic isolation device 103 via the seismic isolation base beam 1022 sways unexpectedly (horizontal direction). There is a risk of causing shaking). In this case, an unexpected part of the building body 04 may collapse, which may reduce the safety of the demolition work.

The demolition tool set 1 and the demolition tool 2 are used to ensure the safety of the demolition work of the seismic isolated building 100. The dismantling tool set 1 and the dismantling tool 2 will be described with reference to FIGS. 3 to 5 in addition to FIGS. 1 and 2. Although FIGS. 1 and 2 show an example in which the demolition tool set 1 is used in the demolition work of the seismic isolated building 100, only the demolition tool 2 provided in the demolition tool set 1 may be used.

The demolition tool 2 suppresses unexpected rolling of the building body 104 supported by the seismic isolation base beam 1022 connected to the seismic isolation device 103 in the demolition work of the seismic isolation building 100. It is a tool for. The demolition tool 2 is made of a tough steel material that does not deform when a load is applied to the building body 104 in the demolition work. The dismantling tool 2 is formed in an H shape in a plan view. As shown in FIG. 3, the dismantling tool 2 includes an insertion portion 21, a foundation facing portion 22, and a beam facing portion 23.

The insertion portion 21 is a rod-shaped member that is inserted into the gap GP between the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021 in the horizontal insertion direction H2 along the thickness of the outer peripheral foundation 1011. The insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011 in a state of being inserted into the gap GP.

The foundation facing portion 22 is a portion of the dismantling tool 2 facing the side surface of the outer peripheral foundation 1011. The foundation facing portion 22 has a first foundation facing portion 221 and a second foundation facing portion 222. The first foundation facing portion 221 is a portion of the foundation facing portion 22 that extends vertically from one end of the insertion portion 21 and faces the outer surface 101A of the outer peripheral foundation 1011. The protrusion length L21 of the first foundation facing portion 221 from the insertion portion 21 is longer than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. The first foundation facing portion 221 may not extend vertically from one end of the insertion portion 21 as long as it is configured to face the outer surface 101A of the outer peripheral foundation 1011. The second foundation facing portion 222 is a portion of the foundation facing portion 22 that extends vertically from the other end of the insertion portion 21 and faces the inner side surface 101B of the outer peripheral foundation 1011. The protruding length L31 of the second foundation facing portion 222 from the insertion portion 21 is longer than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021, and has the same value as the protruding length L21 of the first foundation facing portion 221. Is set to. The second foundation facing portion 222 may not extend vertically from the other end of the insertion portion 21 as long as it is configured to face the inner side surface 101B of the outer peripheral foundation 1011. The foundation facing portion 22 has the outer peripheral foundation 1011 in a state where the first foundation facing portion 221 faces the outer surface 101A of the outer peripheral foundation 1011 and the second foundation facing portion 222 faces the inner surface 101B of the outer peripheral foundation 1011. Sandwich.

The beam facing portion 23 is a portion of the dismantling tool 2 facing the side surface of the outer peripheral base beam 1021. The beam facing portion 23 has a first beam facing portion 231 and a second beam facing portion 232. The first beam facing portion 231 is a portion of the beam facing portion 23 that extends perpendicularly from the other end of the insertion portion 21 to the side opposite to the second foundation facing portion 222 and faces the inner side surface 102B of the outer peripheral base beam 1021. .. The protrusion length L41 from the insertion portion 21 of the first beam facing portion 231 is longer than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. The first beam facing portion 231 may not extend vertically from the other end of the insertion portion 21 as long as it is configured to face the inner side surface 102B of the outer peripheral base beam 1021. The second beam facing portion 232 is a portion of the beam facing portion 23 that extends perpendicularly from one end of the insertion portion 21 to the side opposite to the first foundation facing portion 221 and faces the outer surface 102A of the outer peripheral base beam 1021. The protruding length L51 of the second beam facing portion 232 from the insertion portion 21 is longer than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021, and has the same value as the protruding length L41 of the first beam facing portion 231. Is set to. The second beam facing portion 232 may not extend vertically from one end of the insertion portion 21 as long as it is configured to face the outer surface 102A of the outer peripheral base beam 1021.

In the dismantling tool 2, the insertion portion 21 is inserted into the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021 and placed on the upper surface 101C of the outer peripheral foundation 1011. The portions 222 face the both side surfaces 101A and 101B of the outer peripheral foundation 1011 so as to sandwich the outer peripheral foundation 1011 and the first beam facing portion 231 and the second beam facing portion 232 both side surfaces 102A and 102B of the outer peripheral base beam 1021. Facing. In such a configuration, the outer peripheral foundation beam with respect to the outer peripheral foundation 1011 is in a state where the first foundation facing portion 221 is in contact with the outer surface 101A of the outer peripheral foundation 1011 and the first beam facing portion 231 is in contact with the inner side surface 102B of the outer peripheral foundation beam 1021. The horizontal displacement of 1021 in the insertion direction H2 is restricted. Further, in a state where the second foundation facing portion 222 is in contact with the inner side surface 101B of the outer peripheral foundation 1011 and the second beam facing portion 232 is in contact with the outer surface 102A of the outer peripheral base beam 1021, the insertion direction of the outer peripheral base beam 1021 with respect to the outer peripheral foundation 1011. H2 Regulates horizontal displacement to the outside. By restricting the displacement of the outer peripheral base beam 1021, the displacement of the building body 104 supported by the outer peripheral base beam 1021 and the seismic isolated base beam 1022 is also regulated. As a result, in the dismantling work of the seismic isolated building 100, it is possible to prevent the building main body 104 in a state supported by the seismic isolated base beam 1022 connected to the seismic isolated device 103 from causing unexpected rolling. can. Therefore, it is possible to prevent the unexpected part of the building body 104 from collapsing in the demolition work, so that the safety of the demolition work can be ensured.

Further, in the dismantling tool 2, the separation distance along the insertion direction H2 between the first foundation facing portion 221 and the first beam facing portion 231 and the distance between the second foundation facing portion 222 and the second beam facing portion 232. The separation distance along the insertion direction H2 is the same value, and corresponds to the length of the insertion portion 21 along the insertion direction H2. The separation distance is set so as to satisfy the following equation (1).
{(D-T1) + (D-T2)} <A ... (1)

In the formula (1), "D" indicates the separation distance, "T1" indicates the thickness of the outer peripheral foundation 1011, "T2" indicates the thickness of the outer peripheral foundation beam 1021 along the insertion direction H2, and "A". Indicates the horizontal movement allowance of the building body 104 by the seismic isolation device 103.

"(D-T1)" on the left side of the above equation (1) represents the total value of the gap dimensions between each of the first foundation facing portion 221 and the second foundation facing portion 222 and the outer peripheral foundation 1011. .. “(D-T2)” on the left side of the above equation (1) represents the total value of the gap dimensions between each of the first beam facing portion 231 and the second beam facing portion 232 and the outer peripheral base beam 1021. Become.

In other words, the separation distance D set so as to satisfy the above equation (1) is the gap dimension between the first foundation facing portion 221 and the outer peripheral foundation 1011 and the first beam facing portion 231 and the outer peripheral base beam 1021. The separation distance D is set so that the total value with the gap dimension between the spaces is smaller than half the value of the movement allowance A of the building body 104 by the seismic isolation device 103.

As described above, the separation distance D is set based on the movement allowance A in the horizontal direction of the building main body 104 by the seismic isolation device 103. As a result, when the outer peripheral foundation beam 1021 tries to be displaced with respect to the outer peripheral foundation 1011 beyond the movement allowance A of the seismic isolation device 103, the first foundation facing portion 221 and the second foundation facing portion 222 are surely made. Is in contact with the side surfaces 101A and 101B of the outer peripheral foundation 1011 and the first beam facing portion 231 and the second beam facing portion 232 are in contact with the side surfaces 102A and 102B of the outer peripheral base beam 1021. Therefore, the horizontal displacement amount of the outer peripheral foundation beam 1021 with respect to the outer peripheral foundation 1011 can be made smaller than the movement allowance A of the seismic isolation device 103.

In the insertion portion 21, the first foundation facing portion 221 and the second foundation facing portion 222 face the side surfaces 101A and 101B of the outer peripheral foundation 1011, and the first beam facing portion 231 and the second beam facing portion 232 face the outer peripheral base beam. It is desirable that the mounting portion 211 has a surface extending parallel to the upper surface 101C of the outer peripheral foundation 1011 in a state facing the side surfaces 102A and 102B of the 1021. In this case, the insertion portion 21 is made of, for example, a steel material made of a square cylinder or a prism having a mounting portion 211. In the example shown in FIG. 3, the insertion portion 21 is made of a steel material made of a square cylinder. As a result, the insertion portion 21 can maintain a stable mounting state on the upper surface 101C of the outer peripheral foundation 1011. Therefore, in the dismantling tool 2, the first foundation facing portion 221 and the second foundation facing portion 222 face the side surfaces 101A and 101B of the outer peripheral foundation 1011 in a state where the insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011. In addition, the posture in which the first beam facing portion 231 and the second beam facing portion 232 face the side surfaces 102A and 102B of the outer peripheral base beam 1021 (hereinafter referred to as "displacement regulation posture") can be stably maintained. can. As a result, in the dismantling work of the seismic isolated building 100, it is possible to stably suppress the unexpected rolling of the building main body 104.

Further, as shown in FIG. 3, the first foundation facing portion 221 and the second beam facing portion 232 are integrally formed, and are composed of a rod-shaped member connected and fixed to one end of the insertion portion 21. Has been done. Similarly, the second foundation facing portion 222 and the first beam facing portion 231 are integrally formed, and are composed of a rod-shaped member connected and fixed to the other end of the insertion portion 21. In such a configuration, the dismantling tool 2 is realized by a simple structure in which a rod-shaped member is connected and fixed to each of one end and the other end of the rod-shaped insertion portion 21 so as to have an H-shaped shape in a plan view. be able to. In this case, the shape of each rod-shaped member of the rod-shaped member constituting the first foundation facing portion 221 and the second beam facing portion 232 and the rod-shaped member constituting the second foundation facing portion 222 and the first beam facing portion 231 is , Is not particularly limited. Like the insertion portion 21, each rod-shaped member may be made of a steel material made of a square cylinder or a prism. In the example shown in FIG. 3, each rod-shaped member is made of a steel material made of a square cylinder.

Further, in a state where the dismantling tool 2 is in a displacement restricting posture, the width of the insertion portion 21 with respect to the direction H3 (hereinafter referred to as "arrangement direction H3") along the outer peripheral foundation 1011 orthogonal to the vertical direction H1 and the insertion direction H2. The dimension W11, the width dimension W31 of the second foundation facing portion 222, and the width dimension W41 of the first beam facing portion 231 are shorter than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. In the first foundation facing portion 221 and the second foundation facing portion 222 constituting the foundation facing portion 22, the second foundation facing portion 222 is a facing portion on the side arranged inside the outer peripheral foundation 1011. Further, in the first beam facing portion 231 and the second beam facing portion 232 constituting the beam facing portion 23, the first beam facing portion 231 is a facing portion on the side arranged inside the outer peripheral foundation 1011.

In this case, the insertion portion 21 and the second foundation facing portion are in a state in which the dismantling tool 2 is rotated 90 degrees from the displacement restricting posture (hereinafter referred to as “insertable posture”) around the rotation axis extending in the insertion direction H2. The 222 and the first beam facing portion 231 can be passed through the gap GP from the outside to the inside of the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021. The dismantling tool 2 can be inserted while the insertion portion 21 is located in the gap GP and the second foundation facing portion 222 and the first beam facing portion 231 are located inside the outer peripheral foundation 1011 and the outer peripheral base beam 1021. Rotate 90 degrees from the posture to set the displacement regulation posture. As a result, the insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011 and the first foundation facing portion 221 and the second foundation facing portion 222 face the side surfaces 101A and 101B of the outer peripheral foundation 1011 and the first. The dismantling tool 2 can be arranged in the gap GP in a state where the beam facing portion 231 and the second beam facing portion 232 are in a displacement restricting posture so as to face the side surfaces 102A and 102B of the outer peripheral base beam 1021.

In the example shown in FIG. 3, the width dimension W11 of the insertion portion 21, the width dimension W31 of the second foundation facing portion 222, and the width dimension W41 of the first beam facing portion 231 are set to the same values shorter than the dimension of the gap GP. Has been done.

In the state where the dismantling tool 2 is in the displacement restricting posture, the width dimension W12 along the vertical direction H1 in the insertion portion 21 is shorter than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. In the insertion portion 21, the width dimension W11 and the width dimension W12 are set to, for example, the same value. It is not necessary to set the width dimension W32 along the insertion direction H2 of the second foundation facing portion 222 to a value shorter than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. The width dimension W32 of the second foundation facing portion 222 may be set to a value equal to or larger than the dimension of the gap GP, but is set to the same value as the width dimension W31 shorter than the dimension of the gap GP. Similarly, the width dimension W42 along the insertion direction H2 of the first beam facing portion 231 does not need to be set to a value shorter than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. The width dimension W42 of the first beam facing portion 231 may be set to a value equal to or larger than the dimension of the gap GP, but is set to the same value as the width dimension W41 shorter than the dimension of the gap GP.

In the first foundation facing portion 221 the width dimension W21 along the arrangement direction H3 and the width dimension W22 along the insertion direction H2 are shorter than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. No need to set. The width dimension W21 and the width dimension W22 of the first foundation facing portion 221 may be set to values equal to or larger than the dimension of the gap GP, but the width dimension W31 and the width of the second foundation facing portion 222 shorter than the dimension of the gap GP. It is set to the same value as the dimension W32. Similarly, in the second beam facing portion 232, the width dimension W51 along the arrangement direction H3 and the width dimension W52 along the insertion direction H2 are larger than the dimension of the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. It does not need to be set to a short value. The width dimension W51 and the width dimension W52 of the second beam facing portion 232 may be set to values equal to or larger than the dimension of the gap GP, but the width dimension W41 and the width of the first beam facing portion 231 shorter than the dimension of the gap GP. It is set to the same value as the dimension W42.

In the present embodiment, the width dimensions W11 and W12 of the insertion portion 21, the width dimensions W21 and W22 of the first foundation facing portion 221 and the width dimensions W31 and W32 of the second foundation facing portion 222, and the first beam. All the width dimensions of the width dimensions W41 and W42 of the facing portion 231 and the width dimensions W51 and W52 of the second beam facing portion 232 are set to the same value. As a result, the rod-shaped member constituting the insertion portion 21, the rod-shaped member constituting the first foundation facing portion 221 and the second beam facing portion 232, and the rod-shaped member constituting the second foundation facing portion 222 and the first beam facing portion 231. As the member, a steel material made of the same square cylinder or prism can be used. That is, an H-shaped dismantling tool 2 can be manufactured in a plan view using a kind of steel material.

Next, the dismantling tool set 1 will be described with reference to FIGS. 1, 2, 4, and 5. The demolition tool set 1 is a tool set used in the demolition work of the seismic isolated building 100. As shown in FIG. 2, the dismantling tool set 1 is installed at a plurality of locations along the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021. The dismantling tool set 1 includes the above-mentioned plurality of dismantling tools 2 and a connecting member 3. The number of the dismantling tools 2 provided in the dismantling tool set 1 is not particularly limited as long as it is 2 or more. The dismantling tool set 1 includes, for example, two dismantling tools 2.

The connecting member 3 connects the plurality of dismantling tools 2 so that the plurality of dismantling tools 2 are arranged at intervals in the arrangement direction H3 along the outer peripheral foundation 1011 and the outer peripheral base beam 1021. By using the demolition tool set 1 in the demolition work of the seismic isolated building 100, a plurality of demolition tools 2 in a state of being connected by the connecting member 3 are arranged in the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021. Can be done. As a result, in each dismantling tool 2, the first foundation facing portion 221 and the second foundation facing portion 222 are placed on the side surfaces 101A and 101B of the outer peripheral foundation 1011 in a state where the insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011. It is possible to more stably maintain the posture in which the first beam facing portion 231 and the second beam facing portion 232 face each other and face the side surfaces 102A and 102B of the outer peripheral base beam 1021.

The connecting member 3 can connect the portions located outside the outer peripheral foundation 1011 and the outer peripheral base beam 1021 in the plurality of dismantling tools 2. Specifically, as shown in FIG. 4, in a state where the plurality of dismantling tools 2 are in a displacement restricting posture, the connecting member 3 is a first foundation facing portion 221 and a second beam facing portion in each dismantling tool 2. The vicinity of the center of each rod-shaped member constituting 232 in the vertical direction H1 is connected to each other. In this case, when the plurality of dismantling tools 2 are connected by the connecting member 3, they can be connected from the outside of the outer peripheral foundation 1011 and the outer peripheral base beam 1021.

As shown in FIG. 4, the connecting member 3 includes a connecting plate 31, a connecting bolt 32, and a connecting piece 33. The connecting plate 31 is a plate-shaped member extending in the arrangement direction H3, and has the same number of bolt insertion holes 311 as the dismantling tool 2 to be connected. The bolt insertion hole 311 is a hole through which the shaft portion of the connecting bolt 32 is inserted, and is formed in a long hole shape along the arrangement direction H3. The connecting plate 31 is made of a steel material of the same type as the dismantling tool 2. The connecting piece 33 is fixed to a rod-shaped member constituting the first foundation facing portion 221 and the second beam facing portion 232 in the dismantling tool 2. The connecting piece 33 has an insertion hole through which the shaft portion of the connecting bolt 32 is inserted. In the connecting member 3 having such a configuration, the connecting plate 31 is screwed between the connecting bolt 32 and the nut 321 in a state where the connecting bolt 32 is inserted into the bolt insertion hole 311 of the connecting plate 31 and the insertion hole of the connecting piece 33. By fastening the connecting piece 33 and the connecting piece 33, a plurality of dismantling tools 2 can be connected. The connecting piece 33 may be omitted, and a plurality of dismantling tools 2 may be connected.

Further, the connecting member 3 connects each of the plurality of dismantling tools 2 so as to be able to change the posture by rotating around the rotation axis J1 extending in the insertion direction H2 orthogonal to the vertical direction H1 and the arrangement direction H3. That is, in a state where the plurality of dismantling tools 2 are connected by the connecting member 3, each of the plurality of dismantling tools 2 can be rotated around the rotation axis J1 to change the posture. Specifically, the posture of each dismantling tool 2 is changed by rotating each dismantling tool 2 with the connecting bolt 32 as the rotation axis J1 in a state where the tightening of the connecting plate 31 and the connecting piece 33 by the connecting bolt 32 is loosened. Is possible.

In the dismantling work of the seismic isolated building 100, when the dismantling tool set 1 is placed in the gap GP between the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021, the tightening of the connecting plate 31 and the connecting piece 33 by the connecting bolt 32 is loosened. Then, each dismantling tool 2 is placed in an insertable position (see FIG. 5). As described above, the insertable posture is a posture in which each dismantling tool 2 is rotated 90 degrees around the rotation axis J1 from the state where each dismantling tool 2 takes the displacement restricting posture shown in FIG.

With each dismantling tool 2 in an insertable position, the insertion portion 21, the second foundation facing portion 222, and the first beam facing portion 231 of each dismantling tool 2 are moved from the outside to the inside of the outer peripheral foundation 1011 and the outer peripheral base beam 1021. Pass the gap GP toward it. Then, each dismantling tool 2 is inserted in a state where the insertion portion 21 is located in the gap GP and the second foundation facing portion 222 and the first beam facing portion 231 are located inside the outer peripheral foundation 1011 and the outer peripheral base beam 1021. Rotate 90 degrees from the possible posture to set the displacement restricted posture. In this state, the connecting plate 31 and the connecting piece 33 are tightened and fixed by the connecting bolt 32 in a state where each dismantling tool 2 is in the displacement restricting posture. As a result, each dismantling tool 2 can be arranged in the gap GP between the outer peripheral foundation 1011 and the outer peripheral base beam 1021 in a state where the dismantling tools 2 are connected by the connecting member 3 and take a displacement limiting posture.

In the dismantling tool set 1 in a state where each dismantling tool 2 takes a displacement restricting posture, in each dismantling tool 2, the insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011 and the first foundation facing portion 221 and the first 2 The foundation facing portion 222 faces the side surfaces 101A and 101B of the outer peripheral foundation 1011 and the first beam facing portion 231 and the second beam facing portion 232 face the side surfaces 102A and 102B of the outer peripheral base beam 1021. As a result, the first foundation facing portion 221 and the second foundation facing portion 222 are in contact with the side surfaces 101A and 101B of the outer peripheral foundation 1011 and the first beam facing portion 231 and the second beam facing portion 232 are in contact with the side surface 102A of the outer peripheral base beam 1021. The horizontal displacement of the outer peripheral base beam 10 with respect to the outer peripheral foundation 1011 can be regulated in the state of being in contact with the 102B. By restricting the displacement of the outer peripheral base beam 1021, the displacement of the building body 104 supported by the outer peripheral base beam 1021 and the seismic isolated base beam 1022 is also regulated. As a result, in the dismantling work of the seismic isolated building 100, it is possible to prevent the building main body 104 in a state supported by the seismic isolated base beam 1022 connected to the seismic isolated device 103 from causing unexpected rolling. can. Therefore, it is possible to prevent the unexpected part of the building body 104 from collapsing in the demolition work, so that the safety of the demolition work can be ensured.

(Second Embodiment)
A dismantling tool set 1A including the dismantling tool 2A according to the second embodiment will be described with reference to FIG.

The demolition tool 2A is made of a tough steel material that does not deform when a load is applied to the building main body 104 in the demolition work, similarly to the demolition tool 2 according to the first embodiment. The dismantling tool 2A includes an insertion portion 21, a foundation facing portion 22, and a beam facing portion 23.

The differences between the dismantling tool 2A and the dismantling tool 2 are as follows. That is, in the dismantling tool 2, the foundation facing portion 22 has the first foundation facing portion 221 and the second foundation facing portion 222, whereas in the dismantling tool 2A, the foundation facing portion 22 is the first foundation facing portion. Has only 221. Further, in the dismantling tool 2, the beam facing portion 23 has the first beam facing portion 231 and the second beam facing portion 232, whereas in the dismantling tool 2A, the beam facing portion 23 is the first beam facing portion. It has only 231. Other than these things, the dismantling tool 2A is configured in the same manner as the dismantling tool 2.

That is, the dismantling tool 2A includes an insertion portion 21, a first foundation facing portion 221 and a first beam facing portion 231. The insertion portion 21 is placed on the upper surface 101C of the outer peripheral foundation 1011 in a state of being inserted into the gap GP between the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021. The first foundation facing portion 221 extends vertically from one end of the insertion portion 21 and faces the side surface of the outer peripheral foundation 1011. The first beam facing portion 231 extends perpendicularly from the other end of the insertion portion 21 to the side opposite to the first foundation facing portion 221 and faces the side surface of the outer peripheral base beam 1021.

In the dismantling tool 2A, in a state where the insertion portion 21 is inserted into the gap GP between the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021 and placed on the upper surface 101C of the outer peripheral foundation 1011, the first foundation facing portion 221 is the outer peripheral foundation 1011. When facing the outer side surface 101A, the first beam facing portion 231 faces the inner side surface 102B of the outer peripheral base beam 1021. On the other hand, when the first foundation facing portion 221 faces the inner side surface 101B of the outer peripheral foundation 1011, the first beam facing portion 231 faces the outer surface 102A of the outer peripheral base beam 1021. In such a configuration, in a state where the first foundation facing portion 221 is in contact with the side surface of the outer peripheral foundation 1011 and the first beam facing portion 231 is in contact with the side surface of the outer peripheral base beam 1021, the horizontal direction of the outer peripheral base beam 1021 with respect to the outer peripheral foundation 1011. Regulate the displacement of. By restricting the displacement of the outer peripheral base beam 1021, the displacement of the building body 104 supported by the outer peripheral base beam 1021 and the seismic isolated base beam 1022 is also regulated. As a result, in the dismantling work of the seismic isolated building 100, it is possible to prevent the building main body 104 in a state supported by the seismic isolated base beam 1022 connected to the seismic isolated device 103 from causing unexpected rolling. can.

Further, in the dismantling tool 2A, the separation distance D along the insertion direction H2 between the first foundation facing portion 221 and the first beam facing portion 231 is set so as to satisfy the above formula (1). As a result, when the outer peripheral foundation beam 1021 tries to be displaced with respect to the outer peripheral foundation 1011 beyond the movement allowance A of the seismic isolation device 103, the first foundation facing portion 221 comes into contact with the side surface of the outer peripheral foundation 1011 and the first. The beam facing portion 231 is in contact with the side surface of the outer peripheral foundation beam 1021. Therefore, the horizontal displacement amount of the outer peripheral foundation beam 1021 with respect to the outer peripheral foundation 1011 can be made smaller than the movement allowance A of the seismic isolation device 103.

The dismantling tool set 1A is installed at a plurality of locations along the outer peripheral foundation 1011 and the outer peripheral foundation beam 1021. The dismantling tool set 1A includes the above-mentioned plurality of dismantling tools 2A and a connecting member 3. The dismantling tool set 1A includes, for example, two dismantling tools 2A.

The connecting member 3 connects the two dismantling tools 2A so that the two dismantling tools 2A are arranged at intervals in the arrangement direction H3 along the outer peripheral foundation 1011 and the outer peripheral base beam 1021. In the example shown in FIG. 6, the connecting member 3 connects the first foundation facing portion 221 of one dismantling tool 2A and the first beam facing portion 231 of the other dismantling tool 2A. In the dismantling tool set 1A in such a connected state, each of the first foundation facing portions 221 of the two dismantling tools 2A faces the both side surfaces 101A and 101B of the outer peripheral foundation 1011 so as to sandwich the outer peripheral foundation 1011 and 2 Each first beam facing portion 231 of the two dismantling tools 2A faces both side surfaces 102A and 102B of the outer peripheral base beam 1021. Thereby, it is possible to regulate the horizontal displacement of the outer peripheral base beam 1021 with respect to the outer peripheral foundation 1011 to both sides in the insertion direction H2.

1,1A Dismantling tool set 2,2A Dismantling tool 21 Insertion part 22 Foundation facing part 221 First foundation facing part 222 Second foundation facing part 23 Beam facing part 231 First beam facing part 232 Second beam facing part 3 Connecting member 100 Seismic isolation building 1011 Outer circumference foundation 1012 Seismic isolation foundation 1021 Outer circumference foundation beam 1022 Seismic isolation foundation beam 103 Seismic isolation device 104 Building body GP gap

Claims (9)

The seismic isolation device placed in the area surrounded by the outer peripheral foundation formed on the ground, the seismic isolation base beam connected to the seismic isolation device, and facing the upper side in the vertical direction with respect to the outer peripheral foundation. A dismantling tool used at the time of dismantling a seismic isolated building having a seismic isolated foundation beam and a building body supported from below by the seismic isolated foundation beam and the peripheral foundation beam.
An insertion portion that is inserted into the gap between the outer peripheral foundation and the outer peripheral foundation beam in the insertion direction along the thickness of the outer peripheral foundation and is placed on the upper surface of the outer peripheral foundation.
A first foundation facing portion extending from one end of the insertion portion and facing the side surface of the outer peripheral foundation,
A first beam facing portion extending from the other end of the insertion portion to the side opposite to the first foundation facing portion and facing the side surface of the outer peripheral base beam is provided.
In a state where the first foundation facing portion is in contact with the side surface of the outer peripheral foundation and the first beam facing portion is in contact with the side surface of the outer peripheral foundation beam, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation is regulated. Dismantling tool. A second foundation facing portion extending from the other end of the insertion portion in the same direction as the first foundation facing portion and facing the side surface of the outer peripheral foundation.
A second beam facing portion extending from one end of the insertion portion in the same direction as the first beam facing portion and facing the side surface of the outer peripheral base beam is further provided.
In a state where the second foundation facing portion is in contact with the side surface of the outer peripheral foundation and the second beam facing portion is in contact with the side surface of the outer peripheral foundation beam, the horizontal displacement of the outer peripheral foundation beam with respect to the outer peripheral foundation is regulated. The dismantling tool according to claim 1. The first foundation facing portion and the second beam facing portion are integrally formed, and are connected and fixed to one end of the insertion portion.
The dismantling tool according to claim 2, wherein the second foundation facing portion and the first beam facing portion are integrally formed and are connected and fixed to the other end of the insertion portion. One of claims 1 to 3, wherein the separation distance between the first foundation facing portion and the first beam facing portion along the insertion direction is set so as to satisfy the following formula (1). Dismantling tools described in.
{(D-T1) + (D-T2)} <A ... (1)
[In the formula (1), "D" indicates the separation distance along the insertion direction between the first foundation facing portion and the first beam facing portion, "T1" indicates the thickness of the outer peripheral foundation, and "T2". Indicates the thickness along the insertion direction of the outer peripheral base beam, and "A" indicates the horizontal movement allowance of the building body by the seismic isolation device. ] The insertion portion and the facing portion of the first foundation facing portion and the first beam facing portion on the side arranged inside the outer peripheral foundation are said to be in the vertical direction and in a direction orthogonal to the insertion direction. The dismantling tool according to any one of claims 1 to 4, which has a width dimension shorter than the dimension of the gap between the outer peripheral foundation and the outer peripheral foundation beam. The insertion portion is parallel to the upper surface of the outer peripheral foundation in a state where the first foundation facing portion faces the side surface of the outer peripheral foundation and the first beam facing portion faces the side surface of the outer peripheral foundation beam. The dismantling tool according to any one of claims 1 to 5, which is configured to have a mounting portion having a surface extending to the surface. The seismic isolation device placed in the area surrounded by the outer peripheral foundation formed on the ground, the seismic isolation base beam connected to the seismic isolation device, and facing the upper side in the vertical direction with respect to the outer peripheral foundation. It is a dismantling tool set used at the time of dismantling a seismic isolated building having a seismic isolated foundation beam and a building main body supported from the lower side by the seismic isolated foundation beam and the peripheral foundation beam.
The dismantling tool according to any one of claims 1 to 6 and the dismantling tool.
A dismantling tool set comprising a connecting member connecting the plurality of dismantling tools so that the plurality of dismantling tools are arranged at intervals in an arrangement direction along the outer peripheral foundation and the outer peripheral foundation beam. The dismantling tool set according to claim 7, wherein the connecting member can connect portions of the plurality of dismantling tools located outside the outer peripheral foundation and the outer peripheral base beam. The dismantling according to claim 7 or 8, wherein the connecting member connects each of the plurality of dismantling tools so as to be able to change the posture by rotation around a rotation axis extending in the vertical direction and the direction orthogonal to the arrangement direction. Equipment set.

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