JP7072448B2 - Jack-up device, construction method and dismantling method - Google Patents

Description

The present invention relates to a building jack-up device, a building construction method, and a building demolition method.

Conventionally, various jack-up devices, construction methods, and dismantling methods have been known. Japanese Patent No. 2977074 describes a jack-up system used in a construction frame push-up method. In this jack-up system, 10 jack-up devices are arranged around the assembled building part from the upper floor to the 4th floor part, and the assembled building part is lifted by the jack-up device. The outer pillars are erected under the lifted building part to construct the 3rd floor part and the 2nd floor part. Then, the building portion on which the second floor portion is constructed is lifted by a jack-up device to hold the building portion at a predetermined height, and the pillars of the first floor portion are erected under the lifted building portion to construct the first floor portion.

Japanese Unexamined Patent Publication No. 7-331886 describes a push-up device for a building frame. This push-up device sequentially pushes up the entire building skeleton assembled on the ground, and the skeleton is constructed in this state. The push-up device connects a pair of gantry pedestals, a connecting member that connects the upper parts of the pair of gantry pedestals to each other, two screw rods that are suspended from the connecting members and extend in the vertical direction, and each screw rod. It is provided with a fastening member to be fastened to the member, and a bearing plate having a hole through which each screw rod is inserted from above and on which a beam of the skeleton is placed. Further, a plurality of stays arranged in a cross shape in a plan view are provided on the outside of the pressure plate in a plan view. The push-up device is arranged so as to straddle the beam, and the beam of the skeleton is placed between the two screw rods at the upper part of the bearing plate.

Japanese Patent No. 2977074 Japanese Unexamined Patent Publication No. 7-331886

In the jack-up system described above, 10 jack-up devices are arranged outside the pillars of the building. When the jack-up device is placed outside the pillars of the building in this way, the inner part of the pillars of the building is not sufficiently supported and horizontal force is applied to the building due to an earthquake or the like. A large horizontal force is transmitted to. Therefore, it may be insufficient to ensure earthquake resistance.

The push-up device described above includes a pair of gantry mounts, connecting members, two screw rods, fastening members and a bearing plate, and a beam of the skeleton is placed between the two screw rods on the upper part of the bearing plate. Therefore, the structure of the push-up device is complicated, and the beam of the skeleton must be placed between the two screw rods. Further, the push-up device must be arranged so as to straddle the beam, and the devices must be arranged independently of each other on the outside and the inside of the column and the beam in a plan view. Therefore, there is a problem that the installation of the jack-up device is troublesome.

It is an object of the present invention to provide a jack-up device, a construction method, and a dismantling method that can ensure earthquake resistance and can be easily installed.

The jack-up device according to the present invention is a jack-up device for raising a building provided with columns and beams, and is a load transmission structure arranged inside the columns and beams in a plan view, and the columns and beams in a plan view. It is provided with an elevating member that is arranged inside and the beam is mounted and that moves up and down with respect to the load transmission structure with the beam mounted, and the load transmission structure applies the horizontal force of the building to the beam and elevating member. Communicate to the foundation of the building through.

This jack-up device comprises a load transfer structure that transmits the horizontal force of the building to the foundation of the building. Therefore, even if the building vibrates in the horizontal direction due to an earthquake or the like, the horizontal force of the building can be transmitted to the foundation of the building by the load transmission structure. As a result, the shaking of the building can be transmitted to the foundation, so that earthquake resistance can be ensured. Further, this jack-up device is provided with an elevating member on which the beam of the building is mounted and which moves up and down with respect to the load transmission structure with the beam mounted. Therefore, since the building can be moved up and down with the beam of the building mounted by the elevating member, the work of raising the building can be easily performed. Further, in the jack-up device, the load transmission structure and the elevating member are arranged inside the columns and beams in a plan view. Therefore, since the load transmission structure and the elevating member can be arranged at an arbitrary position inside the building, the degree of freedom in the arrangement of the jack-up device can be increased. Further, by arranging the load transmission structure and the elevating member inside the column and the beam, it is possible to eliminate the need for the arrangement of the jack-up across the beam. Therefore, the jack-up device can be easily installed in a building provided with columns and beams.

Further, the elevating member has an outrigger that can freely move up and down with respect to the beam, and the beam may be placed on the overhanging outrigger to move up and down. In this case, the elevating member can be raised and lowered together with the elevating member by raising the elevating member with the beam placed on the overhanging outrigger. Further, since the elevating member can be moved up and down the beam with the outriggers immersed, it is possible to easily construct the lower floor portion of the building by repeating the appearance of the outriggers. That is, when the outriggers are flexible so that the beams on the lower floors of the building are re-received, the elevating device can be moved to the lower floors without interfering with the beams.

The construction method according to the present invention is a method for constructing a building using the jack-up device described above, and is a process of constructing the upper floor portion of the building and a load on the inside of columns and beams of the upper floor portion in a plan view. The process of arranging the transmission structure and the elevating member, the process of raising the upper floor part by placing the beam on the elevating member and raising the elevating member with respect to the load transmission structure, and the process of raising the upper floor part. It has a process of constructing the lower floor part below.

In this construction method, the upper floor part of the building is constructed, the load transmission structure and the elevating member described above are arranged inside the pillars and beams of the upper floor part in a plan view, and the beam is placed on the elevating member to be placed on the upper floor. Raise the part. Therefore, since the horizontal force of the building can be transmitted to the foundation of the building by the load transmission structure at the time of building the building, the seismic resistance at the time of building the building can be ensured. In addition, the lower floor part is constructed under the upper floor part with the beam of the building placed on the elevating member and the upper floor part is raised. Therefore, since the lower floor portion can be constructed with the upper floor portion raised, the work of constructing the building can be efficiently performed.

The dismantling method according to the present invention is a building dismantling method performed by using the jack-up device described above, and includes a step of arranging a load transmission structure and an elevating member inside columns and beams on the lower floor of the building. It includes a step of raising the lower floor portion by mounting a beam on the elevating member and raising and lowering the elevating member with respect to the load transmission structure, and a step of removing the raised lower floor portion.

In this dismantling method, a load transmission structure and an elevating member are arranged inside the pillars and beams of the lower floor portion of the building, and the beam is placed on the elevating member to raise the lower floor portion. Therefore, since the horizontal force of the building can be transmitted to the foundation of the building by the load transmission structure at the time of dismantling the building, the earthquake resistance at the time of dismantling the building can be ensured. In addition, the lower floor part will be removed with the beam of the building placed on the elevating member and the lower floor part raised. Therefore, since the demolition can be performed with the lower floor portion raised, the demolition work of the building can be efficiently performed.

According to the present invention, seismic resistance can be ensured and installation can be easily performed.

FIG. 1 is a plan view showing an example of a building in which the jack-up device according to the embodiment is arranged. FIG. 2 is a plan view showing the jack-up device of FIG. FIG. 3 is a side view showing the jack-up device of FIG. FIG. 4 is a side view of the jack-up device of FIG. 1 as viewed from a direction different from that of FIG. FIG. 5 is a sectional view taken along line VV of FIG. 6 (a) and 6 (b) are side views for explaining the construction method and the dismantling method according to the embodiment. FIG. 7 is a side view showing an example of a building to which the construction method and the demolition method according to the embodiment are applied. FIG. 8 is a side view showing an example of a building in which the jack-up device according to the embodiment is installed. FIG. 9 is a plan view showing a jack-up device according to a modified example.

Hereinafter, embodiments of the jack-up device, the construction method, and the disassembly method according to the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding elements are designated by the same reference numerals, and duplicate description will be omitted as appropriate. In addition, the drawings are partially simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those described in the drawings.

As shown in FIG. 1, the jack-up device 10 according to the present embodiment is arranged on the skeleton of the building 1. The building 1 includes a foundation 2, a plurality of pillars 3 extending vertically upward from the foundation 2, and a plurality of beams 4 extending over the plurality of pillars 3. The jack-up device 10 is a device that lifts the building 1 at the time of constructing the building 1, introducing the seismic isolation device into the building 1, maintaining the fine adjustment of the building 1, or dismantling the building 1.

The jack-up device 10 is arranged inside the pillar 3 and the beam 4 in a plan view. That is, the jack-up device 10 is arranged in the area surrounded by the plurality of pillars 3 and the plurality of beams 4. A plurality of jack-up devices 10 are arranged in the building 1. A plurality of jack-up devices 10 are arranged along the first direction D1 in which the plurality of beams 4 extend, and a plurality of jack-up devices 10 are arranged along the second direction D2 in which the plurality of beams 4 extend and are orthogonal to the first direction D1. The device 10 is arranged. For example, the jack-up devices 10 are arranged every other along the first direction D1 and every other along the second direction D2. However, the arrangement mode of the jack-up device 10 is not limited to the above and can be changed as appropriate.

FIG. 2 is an enlarged plan view of one jack-up device 10. FIG. 3 is a side view showing the jack-up device 10. As shown in FIGS. 2 and 3, the jack-up device 10 includes a core frame 11 which is a load transmission structure for transmitting the horizontal force of the building 1 to the foundation 2 of the building 1, and an elevating member 15 for raising and lowering the building 1. And prepare. The elevating member 15 includes a lifting girder 17 having an outrigger 16 on which the beam 4 is mounted, and a lifting jack system 18 for raising and lowering the lifting girder 17.

The core frame 11 is, for example, a seismic frame having an RC or steel structure. In the present embodiment, the core frame 11 is provided with a jack-up function of the elevating member 15 to have seismic performance and a jack-up function. As an example, the height of the core frame 11 may be set to be equal to or higher than the height H of each floor of the building 1 (see FIG. 7 and the like). The core frame 11 includes a core pillar 12, and at the upper end thereof, a pair of first straight line portions 12a extending in the first direction D1 and a pair extending in the second direction D2 between the ends of the pair of first straight line portions 12a. The second straight line portion 12b of the above is provided. Each second straight line portion 12b extends from the intersecting portion 12c with the first straight line portion 12a to both ends of the core pillar 12 (both ends of the second direction D2).

The lifting girder 17 is arranged, for example, along the outer surface of the core frame 11 in a plan view. The lifting girder 17 is a load transmission beam that transmits the horizontal load of the building 1 to the foundation 2 via the core frame 11. The core frame 11 can receive the horizontal load applied to the building 1 from the lifting girder 17 and transmit it to the foundation 2. The lifting girder 17 has a frame shape in a plan view, and is arranged along the inner surface 4a of the beam 4 in a plan view. The lifting girder 17 can be raised and lowered along the third direction D3 with respect to the core frame 11. The third direction D3 is a height direction orthogonal to both the first direction D1 and the second direction D2.

The outrigger 16 is provided so as to freely appear and disappear with respect to the outer surface 17a of the lifting girder 17 in a plan view. The lifting girder 17 functions as an outrigger box, and the outrigger 16 functions as an outrigger arm. The outrigger 16 is a portion on which the beam 4 of the building 1 is placed so as to project from the outer surface 17a. The outriggers 16 appear and disappear along the second direction D2 at both ends of the first direction D1 of the lifting girder 17.

The jack-up device 10 can be passed through a region surrounded by a plurality of columns 3 and a plurality of beams 4 in a state where each outrigger 16 is immersed in the lifting girder 17 (a state in which each outrigger 16 does not protrude). The jack-up device 10 is capable of mounting the beam 4 on each outrigger 16 by projecting each outrigger 16 under the beam 4.

The lifting jack system 18 is an ascending means for lifting the beam 4 of the building 1 to raise the building 1. The lifting jack system 18 lifts the beam 4 by raising the outrigger 16 on which the beam 4 is mounted and the lifting girder 17. The lifting jack system 18 is arranged, for example, at the corners (four corners) of the lifting girder 17 in a plan view and inside the first direction D1 of the outrigger 16.

The lifting jack system 18 is, for example, a lifting device including a jack 18a which is a center hole jack and a rod-shaped member 18c. The lifting jack system 18 includes, for example, a jack 18a fixed to the core frame 11 and a rod-shaped member 18c that penetrates the core frame 11 and the lifting girder 17 in the third direction D3 and is inserted into the jack 18a. The rod-shaped member 18c is a lifting material that lifts the lifting girder 17 with respect to the core frame 11. As an example, the lifting jack system 18 is hydraulic. The upper portion of the rod-shaped member 18c is fixed to the core frame 11, and the lower portion of the rod-shaped member 18c is fixed to the lifting girder 17. Further, the lower portion of the rod-shaped member 18c penetrates the lifting girder 17 and is stopped by a nut or the like. The rod-shaped member 18c may be a wire or a screw.

FIG. 4 is a side sectional view of the jack-up device 10 as viewed along the second direction D2. FIG. 5 is a sectional view taken along line VV of FIG. As shown in FIGS. 4 and 5, the lifting girder 17 is provided with a load transmitting member 19. The load transmission member 19 is provided at both ends of the first direction D1 of the lifting girder 17 and at both ends of the second direction D2 of the lifting girder 17. That is, eight load transmission members 19 are provided around each pillar 3 in a plan view. Each load transmitting member 19 faces the inner surface 4a of the core frame 11 and the beam 4.

Each load transmission member 19 includes a first load transmission unit 19a that contacts the core frame 11 and a second load transmission unit 19b that contacts the inner surface 4a of the beam 4. The first load transmitting portion 19a faces the outer surface 12d of the core pillar 12, and a gap S is formed between the first load transmitting portion 19a and the outer surface 12d. The distance of the gap S between the first load transmitting portion 19a and the outer surface 12d is, for example, 1 mm or more and 10 mm or less.

When the building 1 is shaken or the like, the gap S disappears due to the shaking or the like, the first load transmitting portion 19a comes into contact with the core pillar 12, and the shaking or the like comes into contact with the core pillar 12 of the first load transmitting portion 19a. The load associated with the above is transmitted to the foundation 2 via the core pillar 12. A guide rail may be provided on either the outer surface 12d or the first load transmitting portion 19a. In this case, the first load transmitting portion 19a is provided along the guide rail in the third direction D3 with respect to the outer surface 12d. Move along.

For example, when the second load transmission unit 19b comes into contact with the inner surface 4a of the beam 4 and the building 1 is shaken or the like, the second load transmission part 19b, the first load transmission part 19a and the like are caused by the shaking or the like. The horizontal load is transmitted to the foundation 2 via the core column 12. In this way, the load transmission member 19 can transmit the horizontal load of the building 1 to the foundation 2 via the lifting girder 17 and the core frame 11.

Next, a method of constructing a building according to the present embodiment will be described. In the following, for example, a method of constructing the building 1 using the jack-up device 10 will be described with reference to FIGS. 6 (a), 6 (b), and FIG. 7. First, the top floor 1A (upper floor part) of the building 1 is constructed. At this time, the pillars 3 and the beams 4 forming the top floor 1A are constructed (the process of constructing the upper floor portion of the building).

Next, as shown in FIG. 6A, the jack-up device 10 is installed on the constructed top floor 1A, and the core frame 11 and the elevating member 15 are inside the pillars 3 and beams 4 of the top floor 1A in a plan view. (Step of arranging the load transmission structure and the elevating member). At this time, the rod-shaped member 18c of the lifting jack system 18 is positioned on the lower side, the outrigger 16 is projected from the lifting girder 17 under each beam 4, and the beam 4 is placed on the outrigger 16.

Subsequently, as shown in FIG. 6B, the lifting girder 17 and the outrigger 16 are lifted by raising the rod-shaped member 18c of each lifting jack system 18 with respect to the jack 18a, and a plurality of beams on the top floor 1A are lifted. Raise each of the four. At this time, by raising the rod-shaped members 18c of the plurality of lifting jack systems 18 at the same time, the plurality of beams 4 are raised at the same time, and the entire top floor 1A is raised. The lower floor portion 1B is constructed at the lower part of the top floor 1A with the entire top floor 1A raised. At this time, the pillar 3 and the beam 4 forming the lower floor portion 1B are constructed at the lower part of the uppermost floor 1A (step of constructing the lower floor portion).

After constructing the lower floor portion 1B at the lower part of the upper floor portion 1A as described above, the outrigger 16 is immersed and the lifting girder 17 is lowered to the height of the beam 4 of the lower floor portion 1B. Then, the outrigger 16 is projected from the lower side of each beam 4 of the lower floor portion 1B, the beam 4 is placed on the outrigger 16, and the entire lower floor portion 1B is raised in the same manner as described above. Building 1 as shown in FIG. 7 is constructed by repeating the construction of a further lower floor portion at the lower part of the lower floor portion 1B with the entire lower floor portion 1B raised. In the method for constructing the building 1 according to the present embodiment, the jack-up device 10 functions as a push-up device for pushing up each floor of the building 1, so that the push-up method for pushing up each floor by the jack-up device 10 provided with the core frame 11 is used. Will be adopted.

Subsequently, a method of dismantling the building according to the present embodiment will be described. In the building dismantling method according to the present embodiment, the building 1 is dismantled using the jack-up device 10. First, as shown in FIG. 8, the jack-up device 10 is installed on the lowest floor 1C (lower floor portion) of the building 1. At this time, the core frame 11 and the elevating member 15 are arranged inside the pillar 3 and the beam 4 of the lowest floor 1C in a plan view (the step of arranging the load transmission structure and the elevating device).

When arranging the core frame 11 and the elevating member 15 as described above, the rod-shaped member 18c of the lifting jack system 18 is positioned on the lower side, and the outrigger 16 is placed under each beam 4 of the lowest floor 1C from the lifting girder 17. It is assumed that the beam 4 is placed on the outrigger 16 so as to be projected. Subsequently, as shown in FIG. 7, by raising the rod-shaped member 18c of each lifting jack system 18 with respect to the jack 18a, the lifting girder 17 and the outrigger 16 are lifted to lift the plurality of beams 4 on the lowest floor 1C. At the same time, the entire building 1 is raised (the process of raising the lower floor).

After raising the entire building 1 as described above, the pillars 3 and beams 4 of the lowest floor 1C are removed while the upper floor portion 1D of the lower floor 1C of the building 1 is supported (the lower floor portion is removed). The process of removal). Then, the upper floor portion 1D is lowered to put the beam 4 of the upper floor portion 1D on the outrigger 16, and the upper floor portion 1D is supported and the upper floor portion 1D is removed repeatedly. As a result, as shown in FIGS. 6 (b) and 6 (a), the lower floor portion 1B and the top floor 1A are finally dismantled, and the entire building 1 is dismantled.

Next, the action and effect obtained from the jack-up device 10, the construction method, and the dismantling method according to the present embodiment will be described in detail. The jack-up device 10 includes a core frame 11 that transmits the horizontal force of the building 1 to the foundation 2 of the building 1. Therefore, even if the building 1 vibrates in the horizontal direction due to an earthquake or the like, the horizontal force of the building 1 can be transmitted to the foundation 2 of the building 1 by the core frame 11. As a result, the horizontal force of the building 1 at the time of an earthquake can be transmitted to the foundation 2, so that the earthquake resistance can be ensured.

Further, the jack-up device 10 includes a lifting member 15 on which the beam 4 of the building 1 is mounted and which moves up and down with respect to the core frame 11 with the beam 4 mounted. Therefore, since the elevating member 15 can move the building 1 up and down with the beam 4 of the building 1 mounted on it, the work of raising the building 1 can be easily performed.

Further, in the jack-up device 10, the core frame 11 and the elevating member 15 are arranged inside the pillar 3 and the beam 4 in a plan view. Therefore, since the core frame 11 and the elevating member 15 can be arranged at an arbitrary position inside the building 1 (arbitrary position among the plurality of regions formed by the columns 3 and the beams 4), the jack-up device 10 It is possible to increase the degree of freedom in the arrangement of.

Further, the jack-up device 10 can eliminate the need to arrange the jack-up device 10 across the beam 4 by arranging the core frame 11 and the elevating member 15 inside the pillar 3 and the beam 4. Therefore, the jack-up device 10 can be easily installed in the building 1 provided with the pillars 3 and the beams 4.

Further, the elevating member 15 has an outrigger 16 that can freely move up and down with respect to the beam 4, and the beam 4 is placed on the overhanging outrigger 16 and moves up and down. Therefore, by raising the elevating member 15 with the beam 4 placed on the overhanging outrigger 16, the building 1 can be moved up and down together with the elevating member 15. Further, since the elevating member 15 can be moved up and down the beam 4 with the outrigger 16 immersed, it is possible to easily construct the lower floor portion of the building 1 by repeating the appearance of the outrigger 16. ..

That is, when the outrigger 16 is free to appear and disappear, the elevating member 15 can be moved to the lower floor portion without interfering with the beam 4 when the beam 4 in the lower floor portion of the building 1 is rereceived. Further, in the building 1 according to the present embodiment, as shown in FIG. 1, since a plurality of jack-up devices 10 are dispersedly arranged, the horizontal force of the building 1 can be dispersed by the core frame 11. Contributes to further improvement of seismic performance.

Further, in the construction method according to the present embodiment, the upper floor portion (for example, the top floor 1A) of the building 1 is constructed, and the core frame 11 and the elevating member 15 are inside the pillar 3 and the beam 4 of the upper floor portion in a plan view. Is arranged, and the beam 4 is placed on the elevating member 15 to raise the upper floor portion. Therefore, since the horizontal force of the building 1 can be transmitted to the foundation 2 of the building 1 by the core frame 11 at the time of constructing the building 1, the seismic resistance at the time of constructing the building 1 can be ensured. Further, the lower floor portion (for example, the lower floor portion 1B) is constructed under the upper floor portion in a state where the beam 4 of the building 1 is placed on the elevating member 15 and the upper floor portion is raised. Therefore, since the lower floor portion can be constructed with the upper floor portion raised, the construction work of the building 1 can be efficiently performed.

Further, in the dismantling method according to the present embodiment, the core frame 11 and the elevating member 15 are arranged inside the pillar 3 and the beam 4 of the lower floor portion (for example, the lowest floor 1C) of the building 1, and the beam 4 is placed on the elevating member 15. And raise the lower floor part. Therefore, since the horizontal force of the building 1 can be transmitted to the foundation 2 of the building 1 by the core frame 11 at the time of dismantling the building 1, the seismic resistance at the time of dismantling the building 1 can be ensured. Further, the lower floor portion is removed in a state where the beam 4 of the building 1 is placed on the elevating member 15 and the lower floor portion is raised. Therefore, since the dismantling can be performed with the lower floor portion raised, the dismantling work of the building 1 can be efficiently performed.

Although the embodiments of the jack-up device, the construction method, and the disassembly method according to the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and the gist described in each claim is not changed. It may be modified or applied to something else. That is, the configuration of each part of the jack-up device, and the content and order of each step of the construction method and the disassembly method can be variously modified without changing the gist of each claim.

For example, in the above-described embodiment, as shown in FIG. 5, a load transmission member 19 is provided on the outer surface 17a of the lifting girder 17, and the outer surface 12d of the core pillar 12 of the core frame 11 and the first load transmission unit 19a. An example in which a guide rail is provided in any of the above has been described. However, the configurations of the core frame and the lifting girder can be changed as appropriate.

For example, as shown in the modified example of FIG. 9, a plurality of recesses 21a extending in the third direction D3 (direction orthogonal to the paper surface of FIG. 9) are provided on the outside of the core frame 21, and a plurality of recesses 21a are provided inside the lifting girder 27. The convex portion 27a may be provided, and the concave portion 21a of the core frame 21 and the convex portion 27a of the lifting girder 27 may mesh with each other. Further, a convex portion extending in the third direction may be provided on the outside of the core frame, and a concave portion that meshes with the convex portion may be provided on the inside of the lifting girder.

Further, in the above-described embodiment, the lifting girder 17 having the outriggers 16 has been described, but the shape, size, number, and arrangement mode of the outriggers can be appropriately changed. It is also possible to omit the outriggers. In this case, for example, the building 1 can be lifted by mounting the beam 4 on the lifting girder 17 or the support member connected to the lifting girder 17 and lifting the lifting girder 17 by the lifting jack system 18.

1 ... Building, 1A ... Top floor (upper floor part), 1B ... Lower floor part, 1C ... Bottom floor (lower floor part), 1D ... Upper floor part, 2 ... Foundation, 3 ... Pillar, 4 ... Beam, 4a ... Inner surface, 10 ... Jack-up device, 11,21 ... Core frame (load transmission structure), 12 ... Core pillar, 12a ... First straight part, 12b ... Second straight part, 12c ... Crossing part, 12d ... Outer surface, 15 ... Lifting member, 16 ... Out trigger, 17, 27 ... Lifting girder, 17a ... Outer surface, 18 ... Lifting jack system, 18a ... Jack, 18c ... Rod-shaped member, 19 ... Load transmission member, 19a ... First load transmission unit, 19b ... Second load transmission portion, 21a ... concave portion, 27a ... convex portion, D1 ... first direction, D2 ... second direction, D3 ... third direction, S ... gap.

Claims (3)

A jack-up device that raises a building with columns and beams.
A load transfer structure arranged inside the columns and beams in a plan view,
An elevating member arranged inside the pillar and the beam in a plan view, on which the beam is mounted, and which moves up and down with respect to the load transmission structure with the beam mounted.
Equipped with
The load transfer structure is a core frame having a plurality of core columns extending upward from the foundation of the building.
At the upper end of the core pillar, a pair of first straight lines extending in the first direction in which the beam extends, and a second direction orthogonal to the first direction between the ends of the pair of first straight lines. A pair of second straight lines extending to the
The elevating member includes a lifting girder having an outrigger on which the beam is mounted, and a lifting jack system for raising and lowering the lifting girder.
The lifting jack system comprises a rod-shaped member which is a lifting material for lifting the lifting girder with respect to the core frame.
The lifting girder has a frame shape in a plan view.
The outrigger is provided so as to be able to appear and disappear with respect to the outer surface of the lifting girder in a plan view.
Jack-up device. A method of constructing a building using the jack-up device according to claim 1 .
The process of constructing the upper floor of the building and
A step of arranging the load transmission structure and the elevating member inside the pillars and beams of the upper floor portion in a plan view, and
A step of raising the upper floor portion by mounting the beam on the elevating member and raising the elevating member with respect to the load transmission structure.
The process of constructing the lower floor part under the raised upper floor part,
How to build with. A method of dismantling a building using the jack-up device according to claim 1 .
The step of arranging the load transmission structure and the elevating member inside the pillars and beams of the lower floor portion of the building, and
A step of raising the lower floor portion by mounting the beam on the elevating member and raising the elevating member with respect to the load transmission structure.
The process of removing the raised lower floor and
Dismantling method equipped with.

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