JP2024112737A - Floor frame lifting system, method for constructing structure, and method for dismantling structure - Google Patents

Abstract

[Problem] To provide a floor frame lifting system capable of suppressing horizontal shaking of a floor frame when constructing or dismantling a building. [Solution] A building construction system 2 includes a crane installation floor 20, a reaction member 41, and a lifting device 22. The lifting device 22 includes a strand jack 43 for raising and lowering the crane installation floor 20, and a vibration prevention device 24 for suppressing horizontal shaking of the crane installation floor 20. The vibration prevention device 24 includes a base 80 supported by the crane installation floor 20, a moving part 81 arranged on the base 80, a first moving mechanism 82 for moving the moving part 81 relative to the base 80 in a predetermined direction in a horizontal plane, a column holding part 84 that can abut against a side surface of a support column 11A, and a second moving mechanism 85 for moving the column holding part 84 relative to the moving part 81 in a direction intersecting the predetermined direction in a horizontal plane. [Selected Figure] Fig. 10

Description

The present invention relates to a floor frame lifting system, a method for constructing a structure using this floor frame lifting system, and a method for dismantling a structure using this floor frame lifting system.

Conventionally, existing buildings have been demolished due to deterioration of their facilities and structures. There are the following methods for demolishing these existing buildings:
For example, Patent Documents 1 and 2 disclose a demolition system for dismantling an existing structure. The demolition system includes a crane installation floor on which a crane is installed, a support column which is an existing column supporting the crane installation floor, and a lifting device which lowers the crane installation floor along the support column. When dismantling an existing structure, the lifting device is driven to lower the crane installation floor and temporarily support it on the support column, and the existing structure is dismantled in order from the upper layer to the lower layer. At this time, in order to prevent the crane and the crane installation floor from shaking during an earthquake, the crane installation floor is provided with a vibration prevention device which can abut against the side of the support column.

Patent No. 6508958 Patent No. 6893136

The present invention aims to provide a floor frame lifting system, a method for constructing a structure, and a method for dismantling a structure that can suppress horizontal shaking of the floor frame when constructing or dismantling a building, even if the size of the support columns changes depending on the height or if the sides of the support columns are uneven.

The inventors have come up with the present invention by focusing on the fact that by providing a vibration prevention device equipped with a column holding part, a moving part, and a moving mechanism to a floor frame lifting system, which raises and lowers the floor frame when a structure is constructed or dismantled, and driving the moving mechanism of this vibration prevention device to abut the column holding part against the side of the support column, the floor frame can be temporarily fixed to the support column relatively easily even if the side of the support column is uneven or the size of the support column changes at the mid-height of the structure, thereby preventing horizontal shaking of the floor frame in the event of an earthquake.
A floor frame lifting system (e.g., building construction system 2 and building demolition system 4 described later) of a first invention is a floor frame lifting system that lifts and lowers a floor frame (e.g., crane installation floor 20 described later) along a support column (e.g., support column 11A described later), and includes the floor frame, a reaction member (e.g., reaction member 41 described later) installed on the upper part of the support column, and a lifting device (e.g., lifting device 22 described later) attached to the reaction member and lifting and lowering the floor frame, and the lifting device includes a lifting jack (e.g., strand jack 43 described later) that lifts and lowers the floor frame, and a lifting device (e.g., lifting device 22 described later) that suppresses horizontal swaying of the floor frame. and an anti-sway device (e.g., anti-sway device 24 described later) for preventing the movement of the support column relative to the moving part in a predetermined direction in a horizontal plane, and the anti-sway device is characterized in that it comprises a base (e.g., base 80 described later) supported on the floor frame, a moving part (e.g., moving part 81 described later) arranged on the base, a first moving mechanism (e.g., first moving mechanism 82 described later) that moves the moving part relative to the base in a predetermined direction in a horizontal plane, a pillar holding part (e.g., pillar holding part 84 described later) that can abut against a side of the support column, and a second moving mechanism (e.g., second moving mechanism 85 described later) that moves the pillar holding part relative to the moving part in a direction intersecting the predetermined direction in the horizontal plane.

According to this invention, by appropriately adjusting the first moving mechanism and the second moving mechanism, the column holder of the vibration prevention device is brought into contact with the side surface of the support column to prevent the floor frame from moving horizontally relative to the support column. Therefore, even if an earthquake occurs during the construction or demolition of a building, the floor frame can be prevented from shaking horizontally due to the horizontal load of the earthquake, and the construction or demolition of the building can be completed in a short period of time.
In addition, by appropriately adjusting the first moving mechanism and the second moving mechanism, the relative position of the pillar clamping part of the anti-sway device to the support pillar can be easily adjusted. Therefore, when raising and lowering the floor frame, even if the size of the support pillar changes depending on the height or if the side of the support pillar has unevenness, the pillar clamping part of the anti-sway device can reliably hold down the side of the support pillar.

The method for constructing a structure according to the second invention is a method for constructing a structure (e.g., Building 1 described below) using the floor frame lifting system described above, and includes a first step (e.g., step S11 described below) of using at least four permanent columns as support columns, attaching reaction members to the upper ends of the support columns, temporarily supporting the floor frame on the support columns, and preventing the floor frame from vibrating by pressing the sides of the support columns with the vibration prevention device; a second step (e.g., step S12 described below) of constructing the structure for a specified number of floors; and a third step (e.g., step S13 described below) of attaching column members to the tops of the support columns and extending them upward. Both methods are characterized by comprising a third step (e.g., steps S13 and S14 described below) of lifting the reaction member and repositioning it upward; a fourth step (e.g., steps S15 to S17 described below) of releasing the anti-sway device's anti-swaying and the temporary support of the floor frame by the support columns, raising the floor frame along the support columns by the lifting device, temporarily supporting the floor frame on the support columns again, and anti-swaying the floor frame by the anti-sway device; and a fifth step (e.g., step S18 described below) of repeating steps 2 to 4.

According to this invention, some of the permanent columns of the structure are used as support columns, a floor frame is constructed by temporarily supporting it on these support columns, and the structure is constructed, for example, by a crane installed on the floor frame, while the floor frame is raised along the support columns.
Specifically, the process is repeated in order: temporarily supporting the floor frame with the support columns, constructing the required number of floors of the structure, extending the support columns, repositioning the reaction members upward, and raising the floor frame with a lifting jack. In the process of temporarily supporting the floor frame with the support columns, the side of the support columns is pressed down with a vibration prevention device to suppress horizontal shaking of the floor frame. Therefore, even if an earthquake occurs, the building can be constructed safely in a short construction period.

The method for constructing a structure according to the third invention is a method for dismantling a structure using the above-mentioned floor frame lifting system, and includes a first step (e.g., step S21 described below) of using at least four permanent columns as support columns, attaching reaction members to the upper ends of the support columns, temporarily supporting the floor frame on the support columns, and preventing the floor frame from vibrating by pressing the sides of the support columns with the vibration prevention device; a second step (e.g., step S22 described below) of disassembling the structure into predetermined floors; and a third step (e.g., step S23 described below) of preventing the vibration with the vibration prevention device and supporting the front of the support columns. The method is characterized by comprising a third step (e.g., steps S23 to S25 described below) of releasing the temporary support of the floor frame, lowering the floor frame along the support pillars using the lifting jacks, and then temporarily supporting the floor frame on the support pillars again and preventing the floor frame from vibrating using the vibration prevention device; a fourth step (e.g., step S26 described below) of dismantling the upper part of the support pillars and lifting and repositioning the reaction member downward; and a fifth step (e.g., step S27 described below) of repeating steps 2 to 4.

According to this invention, some of the permanent columns of the structure are used as support columns, a floor frame is constructed by temporarily supporting it on these support columns, and the structure is dismantled, for example, by a crane installed on the floor frame while the crane installation floor is lowered along the support columns.
Specifically, the process is repeated in order: temporarily supporting the floor frame with the support columns, dismantling a designated floor of the structure, lowering the floor frame with a lifting jack, dismantling the upper part of the support columns, and replacing the reaction members downwards. In the process of temporarily supporting the floor frame with the support columns, the side of the support columns is pressed down with a vibration prevention device to suppress horizontal shaking of the floor frame. Therefore, even if an earthquake occurs, the building can be dismantled safely in a short period of time.

The present invention provides a floor frame lifting system, a method for constructing a structure, and a method for dismantling a structure that can suppress horizontal shaking of the floor frame when constructing or dismantling a building, even if the size of the support columns changes depending on the height or if the sides of the support columns are uneven.

1 is a side view of a building construction system to which a floor frame lifting system according to a first embodiment of the present invention is applied. FIG. 1 is a plan view of a building construction system. FIG. 2 is an enlarged view of a portion of the building construction system shown in FIG. 1 surrounded by dashed line A. FIG. 4 is a view of the building construction system of FIG. 3 taken along the line II. FIG. 2 is a horizontal cross-sectional view of the building construction system of FIG. 3 along line II-II. FIG. 3 is a horizontal cross-sectional view of the building construction system taken along line III-III of FIG. 11A and 11B are diagrams illustrating the operation of reaction members constituting the building construction system. FIG. 1 is a schematic diagram (part 1) showing the operation of a locking device that constitutes a building construction system. FIG. 2 is a schematic diagram (part 2) showing the operation of the locking device that constitutes the building construction system. FIG. 6 is an enlarged view of a portion of the building construction system shown in FIG. 5 surrounded by a dashed line B. 11 is a view of the anti-sway device of FIG. 10 taken along the line IV-IV. 11 is a view of the anti-vibration device of FIG. 10 taken along the line VV. FIG. 2 is a plan view of the base of the steady rest device and the members attached to the base. 2 is a plan view of a moving part of the anti-vibration device and a member attached to the moving part. FIG. 4 is a plan view of the pillar holder of the anti-vibration device and a member attached to the pillar holder. FIG. 4 is a flowchart of the operation of the anti-vibration device. 13 is a diagram showing the state in which the pillar holder of the anti-vibration device is abutted against the side of the support pillar. FIG. 1 is a flowchart of a procedure for constructing a building using the building construction system. 18 is an explanatory diagram (part 1) of the procedure for constructing a building using the building construction system. Fig. 18(a) shows the initial state of the building construction system. Fig. 18(b) shows the state in which the building construction system has been moved up one floor. This is an explanatory diagram (part 2) of the procedure for constructing a building using the building construction system, showing the state in which the crane installation floor has been temporarily supported again on the support columns. FIG. 11 is a side view of a building demolition system to which a floor frame lifting system according to a second embodiment of the present invention is applied. FIG. 4 is an explanatory diagram of the operation of the lifting device of the building demolition system. 1 is a flowchart showing a procedure for demolishing an existing building using a building demolition system. This is an explanatory diagram (part 1) of the procedure for demolishing a building using the building demolition system. This is an explanatory diagram (part 2) of the procedure for demolishing a building using the building demolition system. FIG. 11 is a plan view showing a state in which a support plate anti-vibration device according to a third embodiment of the present invention is attached. FIG. 11 is a plan view of the support plate with the anti-vibration device of the third embodiment removed. 13A to 13C are explanatory diagrams of the operation of the support plate according to the third embodiment.

The present invention is a floor frame lifting system in which a vibration prevention device that suppresses horizontal vibration of the floor frame is provided on the lifting device, and the lifting device lifts and lowers the floor frame along the support column. The feature of the present invention is that the vibration prevention device has a column pressing part 84 (see Figures 5 and 10) that can abut against or separate from the side surface of the support column.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same components are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

First Embodiment
Fig. 1 is a side view of a building construction system 2 to which a floor frame lifting system according to a first embodiment of the present invention is applied. Fig. 2 is a plan view of the building construction system 2.
The building construction system 2 is for constructing a building 1 as a structure. The building 1 under construction is a high-rise building made of reinforced concrete, and includes a plurality of precast reinforced concrete columns 11, a plurality of precast reinforced concrete beams 12, and a precast reinforced concrete floor 13. Here, some of the columns 11 are defined as support columns 11A that support the building construction system 2.
The columns 11 are formed by connecting precast concrete members 14 vertically as column members, and joints 15 are provided protruding from the opposing side surfaces of the columns 11. The beams 12 are formed by connecting the joints 15 of the columns 11 together with precast concrete members.
The building 1 has a rectangular shape in a plan view. Hereinafter, the longitudinal direction of the building 1 (building construction system 2) is defined as an X direction, and the transverse direction substantially perpendicular to the X direction is defined as a Y direction.

The building construction system 2 includes a crane installation floor 20 as a floor frame, a crane 21 installed on the crane installation floor 20, a lifting device 22 attached to the support column 11A to raise and lower the crane installation floor 20 along the support column 11A, a locking device 23 provided on the crane installation floor 20 and capable of engaging with the upper surface of the joint portion 15 of the support column 11A, and a vibration prevention device 24 (see FIG. 5) that prevents the crane installation floor 20 from shaking in the horizontal direction, i.e., prevents vibration. In this embodiment, there are six support columns 11A, and the lifting device 22, locking device 23, and vibration prevention device 24 are provided for each of the six support columns 11A.

The crane installation floor 20 comprises a plurality of H-shaped steel beam members 30 that connect the lifting devices 22 together, and a plate-shaped floor member 31 (shown with diagonal lines in Figure 2) that is a covering plate placed on these beam members 30.
The crane 21 comprises a base 32 formed by erecting steel materials in a crane mounting floor 20 in a crane installation configuration, a mast 33 erected on the base 32, a crane body 34 rotatably supported on the mast 33, a jib 35 supported on the crane body 34 so that it can be raised and lowered, a hook (not shown) suspended from the tip of the jib 35, and a hoisting device 36 attached to the crane body 34 for raising and lowering the hook.

Fig. 3 is an enlarged view of a portion of the building construction system 2 in Fig. 1 surrounded by a dashed line A. Fig. 4 is a view taken along the line II in Fig. 3. Fig. 5 is a cross-sectional view taken along the line II-II in Fig. 3. Fig. 6 is a cross-sectional view taken along the line III-III in Fig. 3.
The lifting device 22 comprises a rectangular frame 40 that surrounds the support pillar 11A and becomes part of the crane installation floor 20, a reaction member 41 attached to the upper end of the support pillar 11A, and strand jacks 43 as a pair of lifting jacks that are provided on the frame 40 and pull the reaction member 41.

The frame 40 includes a rectangular frame base 50 and a pair of gate-shaped jack supports 51 that are rotatably mounted on the frame base 50 and sandwich the support column 11A. The beam members 30 of the crane installation floor 20 connect the frame bases 50 of the lifting devices 22 together.

The frame base 50 comprises a pair of beam members 53A made of H-shaped steel extending approximately parallel to each other in the X direction, and a pair of beam members 53B made of H-shaped steel connecting the beam members 53A and extending approximately parallel to each other in the Y direction.
The jack support portion 51 is rotatably supported on the upper surface of the beam member 53B. The strand jack 43 is fixed to the jack support portion 51 so as to face upward.

The reaction member 41 comprises a pair of locking portions 60 that lock onto the joint portions 15 on the side surfaces of the support column 11A, a connecting beam 61 that is positioned across the support column 11A and connects the pair of locking portions 60, and a beam temporary fixing mechanism 62 that is provided on each of the pair of locking portions 60 and temporarily fixes the connecting beam 61.
The hanging members 42 of the strand jacks 43 are respectively connected to the pair of locking portions 60. In this manner, the pair of locking portions 60 and the pair of connecting beams 61 form a highly rigid gate-shaped frame in a side view.

A communication hole 63 is formed in the locking portion 60, and the connecting beam 61 is inserted through this communication hole 63 so as to be horizontally movable.
The beam temporary fixing mechanism 62 includes a wedge member 64 that temporarily fixes the connecting beam 61 to the engagement portion 60 , and a retaining bolt 65 that restricts the movement of the wedge member 64 .
The wedge member 64 is shaped to become thinner toward the tip, and is horizontally movable. When the wedge member 64 advances, the wedge member 64 is interposed between the communication hole 63 of the locking portion 60 and the connecting beam 61, and the connecting beam 61 is temporarily fixed to the locking portion 60. On the other hand, when the wedge member 64 retreats, the temporary fixation of the connecting beam 61 to the locking portion 60 is released. The holding bolt 65 is screwed into the locking portion 60, and by rotating the holding bolt 65 to bring the tip surface of the holding bolt 65 into contact with the base end surface of the wedge member 64, the wedge member 64 is prevented from retreating.

In the above-described lifting device 22, when the strand jack 43 pulls the hanging material 42, the crane installation floor 20 rises relative to the support column 11A. On the other hand, when the strand jack 43 delivers the hanging material 42, the crane installation floor 20 descends relative to the support column 11A.
7, the holding bolt 65 of the reaction member 41 is retracted and the wedge member 64 is retracted, whereby the temporary fixation of the connecting beam 61 to the locking portion 60 is released, and the connecting beam 61 becomes movable horizontally. Thereafter, the connecting beam 61 is manually moved horizontally to retreat from above the support column 11A. This releases the connection between the pair of locking portions 60.

8 and 9 are schematic diagrams showing the operation of the locking device 23. In FIG.
5 and 6, the locking device 23 includes a pair of bar beams 70 and a pair of opening/closing mechanisms 71A, 71B that move substantially horizontally in a direction to move the pair of bar beams 70 closer to or farther apart. The locking device 23 locks the pair of bar beams 70 by placing them on the upper surfaces of the pair of joint parts 15 of the support column 11A.

As shown in Figures 5 and 6, the opening and closing mechanism 71A is provided on one of the beam members 53A of the frame base 50, and includes a pair of support parts 72 that support one end side of the pair of bar beams 70 from below, and a moving mechanism 73 that moves the pair of support parts 72 approximately horizontally.

The support portion 72 comprises a horizontal piece 721 that supports the bottom surface of the bar beam 70 from below, and a pair of vertical pieces 722 that extend vertically from both ends of the horizontal piece 721 and abut against both side surfaces of the bar beam 70.
The distance h1 from the upper surface of the horizontal piece 721 of the support portion 72 to the lower surface of the beam member 53A is slightly greater than the height dimension h2 of the bar beam 70. This allows the bar beam 70 to move horizontally without interfering with the beam member 53A.

The movement mechanism 73 includes a motor 74, a pulley 75 that is rotatably mounted at a position horizontally spaced apart from the motor 74, and a chain 76 that is wound around the motor 74 and the pulley 75. One support part 72 is fixed to the upper part of the chain 76, and the other support part 72 is fixed to the lower part of the chain 76. By rotating the screw 77, the pulley 75 moves closer to or further away from the motor 74, making it possible to adjust the tension of the chain 76.

As shown in Figures 5 and 6, the opening/closing mechanism 71B is provided on the other beam member 53A of the frame base 50, and includes a pair of support parts 72 that support the other ends of the pair of bar beams 70 from below, and a moving mechanism 73 that moves the pair of support parts 72 approximately horizontally. The support parts 72 and moving mechanism 73 of the opening/closing mechanism 71B have the same configuration as the support parts 72 and moving mechanism 73 of the opening/closing mechanism 71A.

The locking device 23 locks the crane installation floor 20 to the upper surface of the joint portion 15 protruding laterally from the support column 11A in the following manner (see FIG. 3).
That is, by driving the motors 74 of the opening and closing mechanisms 71A, 71B and rotating the chain 76 in the direction of the arrow in Figure 8, the pair of bar beams 70 supported by the support portions 72 are brought closer to each other, and the pair of bar beams 70 are positioned above the joint portions 15 of the support pillars 11A.
In this state, when the crane installation floor 20 is lowered by the lifting device 22, the bar beam 70 engages with the upper surface of the joint portion 15 of the support column 11A, and the beam member 53A of the crane installation floor 20 engages with the bar beam 70 (see FIG. 3). As a result, the crane installation floor 20 is supported by the support column 11A.
At this time, the bar beam 70 moves upward relative to the support portion 72, but since a pair of vertical pieces of the support portion 72 abut against both side surfaces of the bar beam 70, even if the bar beam 70 moves upward, the bar beam 70 can be prevented from falling off.

On the other hand, the locking device 23 releases the locked state of the joint portion 15 of the crane installation floor 20 in the following manner.
That is, the lifting device 22 slightly raises the crane installation floor 20, and the bar beam 70 is moved downward relative to the support portion 72 and placed on the horizontal piece 721 of the support portion 72. As a result, a gap is formed between the upper surface of the bar beam 70 and the lower surface of the beam member 53A.
In this state, the motors 74 of the opening/closing mechanisms 71A, 71B are driven to rotate the chain 76 in the direction of the arrow in Figure 9, thereby separating the pair of bar beams 70 supported by the support parts 72. The pair of bar beams 70 are retracted from above the joint parts 15 of the support columns 11A. This allows the bar beams 70 to move horizontally smoothly without contacting the bar beams 70 with the beam member 53A (see Figure 5).

Fig. 10 is an enlarged view of the portion (sway prevention device 24) surrounded by the dashed line B of the building construction system in Fig. 5. Fig. 11 is a view taken along the line IV-IV of the sway prevention device 24 in Fig. 10. Fig. 12 is a view taken along the line V-V of the sway prevention device 24 in Fig. 10.
The anti-sway devices 24 are provided on the crane installation floor 20 and suppress horizontal swaying of the crane installation floor 20 by pressing the side surfaces of the corners of the support columns 11A with column pressing parts 84 described below. Specifically, as shown in Fig. 5, four anti-sway devices 24 are provided for each support column 11A, and the column pressing parts 84 of the four anti-sway devices 24 are brought into contact with the side surfaces of the corners of the support columns 11A to prevent horizontal (e.g., X-direction and Y-direction) relative movement of the crane installation floor 20 with respect to the support columns 11A.

The anti-sway device 24 includes a base 80 supported on the crane installation floor 20, a moving part 81 arranged on the base 80, a first moving mechanism 82 that moves the moving part 81 in the Y direction relative to the base 80, a guide mechanism 83 that guides the relative movement of the moving part 81 in the Y direction relative to the base 80, a column holder 84 that can abut against the side of the corner of the support column 11A, a second moving mechanism 85 provided on the moving part 81 that moves the column holder 84 in the X direction relative to the base 80, and a locking mechanism 86 that temporarily fixes the column holder 84 to the base 80.

Figures 13 to 15 show the anti-sway device 24 disassembled into three parts. Figure 13 is a plan view of a base 80 of the anti-sway device 24 and members attached to this base 80. Figure 14 is a plan view of a moving part 81 of the anti-sway device 24 and members attached to this moving part 81. Figure 15 is a plan view of a pillar holder 84 of the anti-sway device 24 and members attached to the pillar holder 84.
A substantially horizontal support plate 90 is attached to the beam members 53A, 53B of the crane installation floor 20. The base 80 has a flat plate shape and is fixed onto the support plate 90.
The moving part 81 is in the shape of a flat plate and is placed on the base part 80 .
The first moving mechanism 82 includes a pair of female threaded portions 821 protruding from the base portion 80 , and a bolt 822 extending in the Y direction and screwed into the pair of female threaded portions 821 .
The head of the bolt 822 abuts against the side of a male screw fixing portion 851 described below, and by rotating the bolt 822 and pressing against the side of the male screw fixing portion 851, the moving portion 81 is moved relative to the base portion 80 in the Y direction.

The guide mechanism 83 includes a pair of elongated holes 831 formed in the moving part 81 and extending in the Y direction, and a pair of bolts 832 screwed into the base 80 and inserted into the pair of elongated holes 831. According to the guide mechanism 83, the bolts 832 move within the elongated holes 831, thereby guiding the relative movement of the moving part 81 in the Y direction with respect to the base 80. Furthermore, the position and orientation of the moving part 81 with respect to the base 80 is temporarily fixed by tightening the bolts 832.
The column holder 84 is also provided with a cylindrical insertion portion 841 into which a male screw 852 (described later) is inserted.

The second moving mechanism 85 includes a pair of male screw fixing parts 851 provided to protrude from the moving part 81, a male screw 852 extending in the X direction and bridged between the pair of male screw fixing parts 851, and a pair of nuts 853 screwed into the male screw 852 to sandwich the insertion part 841 of the pillar holding part 84 from both ends. By rotating the pair of nuts 853, the insertion part 841 of the pillar holding part 84 is moved in the X direction relative to the moving part 81.
The locking mechanism 86 includes a pillar holding holder 861 that is provided to protrude from the base 80 and has an elongated hole 862 formed therein, a pair of bolts 863 that are provided on the pillar holding portion 84 and inserted into the elongated holes 862 of the pillar holding holder 861, and a pair of nuts 864 that are screwed onto each bolt 863 and sandwich the pillar holding holder 861 from both sides. The position and orientation of the pillar holding portion 84 with respect to the base 80 are temporarily fixed by loosening the nuts 864 of the locking mechanism 86 and moving the pillar holding portion 84 in this state in the X direction and Y direction, and then tightening the nuts 864 of the locking mechanism 86 to sandwich the pillar holding holder 861.

The operation of the anti-vibration device 24 will be described with reference to the flow chart of Fig. 16. Specifically, the procedure for changing the state in which the column holder 84 is separated from the support column 11A shown in Fig. 10 to the state in which the column holder 84 is in contact with the side surface of the support column 11A shown in Fig. 17 will be described.
In step S1, the bolt 832 of the guide mechanism 83 is loosened, and the nut 864 of the lock mechanism 86 is loosened.
In step S2, the bolt 822 of the first moving mechanism 82 is rotated to move the moving part 81 relative to the base part 80 in the Y direction.
In step S3, the bolt 832 of the guide mechanism 83 is tightened to temporarily fix the position of the moving part 81 relative to the base part 80.
In step S4, the nut 853 of the second moving mechanism 85 is rotated to move the pillar holding portion 84 relative to the moving portion 81 in the X direction.
In step S5, the nut 864 of the locking mechanism 86 is tightened to temporarily fix the position of the pillar retaining portion 84 relative to the base portion 80.

The procedure for constructing the building 1 will be described below with reference to the flow chart of Fig. 18. Note that Figs. 19 and 20 show only a part of the building construction system 2.
19A, in step S11, a building construction system 2 is constructed on a predetermined floor (e.g., the nth floor) of a building 1. That is, a crane installation floor 20, a crane 21, a lifting device 22, a locking device 23, and a vibration prevention device 24 are erected on the predetermined floor of the building 1.
Specifically, for the portion where the crane installation floor 20 is to be constructed, the reaction member 41 of the lifting device 22 is attached to the top of the support column 11A. Also, the latch beam 70 of the locking device 23 is placed on the joint portion 15 of the support column 11A, so that the crane installation floor 20 is temporarily supported by the support column 11A. Also, the vibration prevention device 24 holds down the side surface of the support column 11A, so that the crane installation floor 20 is prevented from vibrating.

In step S12, one floor of the building 1 is constructed using the crane 21.
In step S13, as shown in Figure 19 (a), the connecting beam 61 of the reaction member 41 is moved and removed from directly above the support column 11A, and in this state, a precast concrete member 14 is attached to the top of the support column 11A, thereby extending the support column 11A upward by one story.
In step S14, as shown in FIG. 19(b), the reaction member 41 is lifted by the crane 21 and moved one layer upward, and then the connecting beam 61 is moved to connect the pair of engaging portions 60 together again.

In step S15, the temporary support of the crane installation floor 20 by the support column 11A is released. In other words, the vibration prevention of the crane installation floor 20 by the vibration prevention device 24 is released. Next, tension is introduced into the hanging material 42 by the strand jack 43 to lift the crane installation floor 20 slightly upward and to cut off the ground (moving the barbs 70 of the locking device 23 away from the joint portion 15). In this state, the opening and closing mechanisms 71A, 71B of the locking device 23 are driven to move the pair of bar beams 70 away from above the joint portion 15 of the support column 11A.
In step S16, as shown in FIG. 20, the strand jack 43 is driven to raise the crane installation floor 20 by one layer along the support columns 11A.

In step S17, as shown in FIG. 20, the crane installation floor 20 is temporarily supported again by the support columns 11A.
That is, the opening and closing mechanisms 71A, 71B of the locking device 23 are driven to position the pair of bar beams 70 above the joints 15 of the support columns 11A. Next, the crane installation floor 20 is lowered by the strand jacks 43 to lock the bar beams 70 onto the upper surfaces of the joints 15 of the support columns 11A. Next, the vibration prevention device 24 prevents the crane installation floor 20 from vibrating.
In step S18, steps S12 to S17 are repeated.

According to this embodiment, the following effects are obtained.
(1) By appropriately adjusting the first moving mechanism 82 and the second moving mechanism 85, the column holder 84 of the anti-sway device 24 is brought into contact with the side surface of the support column 11A, preventing the crane installation floor 20 from moving horizontally relative to the support column 11A. Therefore, even if an earthquake occurs during the construction or demolition of a building, the horizontal shaking of the crane installation floor 20 due to the horizontal load of the earthquake can be suppressed, and the construction or demolition of the building 1 can be completed in a short period of time.
Furthermore, by appropriately adjusting the first moving mechanism 82 and the second moving mechanism 85, the relative position of the column holding portion 84 of the anti-sway device 24 with respect to the support column 11A can be easily adjusted. Therefore, when raising and lowering the crane installation floor 20, even if the size of the support column 11A changes depending on the height, the main beam reinforcement or beam material protrudes from the side of the support column 11A, or there are unevenness on the side of the support column 11A, the column holding portion 84 of the anti-sway device 24 can reliably hold down the corner side of the support column 11A.

(2) A part of the permanent columns 11 of the building 1 is used as a support column 11A, and a crane installation floor 20 on which a crane 21 is installed is constructed by temporarily supporting it on this support column 11A, and the building 1 is constructed by the crane 21 on the crane installation floor 20 while the crane installation floor 20 is raised along the support column 11A.
Specifically, the following steps are repeated in sequence: temporary support of the crane installation floor 20 by the support columns 11A, construction of one floor of the building 1, extension of the support columns 11A, repositioning of the reaction members 41 upward, and raising of the crane installation floor 20 by the strand jacks 43. In the process of temporarily supporting the crane installation floor 20 on the support columns 11A, the anti-sway device 24 holds down the side of the support columns 11A to suppress horizontal shaking of the crane installation floor 20. Therefore, even if an earthquake occurs, the building 1 can be constructed safely in a short construction period.

Second Embodiment
This embodiment differs from the first embodiment in that an existing reinforced concrete building 3 as a structure is demolished by a building demolition system 4 to which the floor frame lifting system according to the second embodiment is applied. The building demolition system 4 differs from the building construction system 2 in the following configuration.
FIG. 21 is a side view of the building demolition system 4.
That is, in the frame 40A, a hanger support portion 52 is provided on the upper surface of the other beam member 53B instead of a jack support portion, and one end of the hanger 42 is connected to this hanger support portion 52.

The reaction member 41A includes a rectangular cylindrical box member 66 that is placed over the upper end of the support column 11A and has its upper end closed, and a reaction beam 67 that is provided on the box member 66 and extends substantially horizontally.
The reaction beam 67 includes a pair of horizontal members 68 that are substantially parallel to each other, and a pair of pulleys 69 that are rotatably supported between both ends of the pair of horizontal members 68 .
The hanging material 42 is wound around a pair of pulleys 69, with one end connected to the hanging material support part 52 and the other end connected to a strand jack 43 fixed to the jack support part 51.

In the above-described lifting device 22, as shown in FIG. 22, when the strand jack 43 pulls the hanging material 42, the crane installation floor 20 rises relative to the support column 11A. On the other hand, as shown in FIG. 7(b), when the strand jack 43 sends out the hanging material 42, the crane installation floor 20 descends relative to the support column 11A.

Hereinafter, a procedure for demolishing an existing building 3 by the building demolition system 4 will be described with reference to the flowchart in Fig. 23. Note that only a part of the building demolition system 4 is shown in Figs. 24 and 25 below.
24(a), in the same manner as in step S11, the building demolition system 4 is constructed on a predetermined floor (e.g., the nth floor) of the existing building 3. At this time, the vibration of the crane installation floor 20 is prevented by pressing the side surface of the support column 11A with the vibration prevention device 24.
In step S22, the existing building 3 is disassembled into one floor using the crane 21.
In step S23, similarly to step S15, the temporary support of the crane installation floor 20 by the support columns 11A is released. At this time, the vibration prevention of the crane installation floor 20 by the vibration prevention device 24 is released.
In step S24, as shown in FIG. 24(b), the strand jack 43 is driven to lower the crane installation floor 20 by one layer along the support columns 11A.
In step S25, similarly to step S17, the crane installation floor 20 is temporarily supported again by the support columns 11A. At this time, the vibration prevention device 24 prevents the crane installation floor 20 from vibrating.

In step S26, as shown in Fig. 25, the reaction member 41 is repositioned downward. Specifically, the reaction member 41A is lifted by the crane 21, removed from the support column 11A, and temporarily placed on the crane installation floor 20. Next, one layer of the support column 11A is removed, and then the reaction member 41A is lifted by the crane 21 and placed again on the top of the support column 11A and temporarily fixed.
In step S27, steps S22 to S26 are repeated.
According to this embodiment, in addition to the above-mentioned effect (1), the following effect is obtained.

(3) Some of the permanent columns 11 of the building 1 are used as support columns 11A, and a crane installation floor 20 on which a crane 21 is installed is constructed by temporarily supporting it on this support column 11A, and the building 1 is dismantled by the crane 21 on the crane installation floor 20 as the crane installation floor 20 is lowered along the support column 11A.
Specifically, the following steps are repeated in sequence: temporary support of the crane installation floor 20 by the support columns 11A, dismantling one floor of the building 1, lowering the crane installation floor 20 by the strand jacks 43, dismantling the upper parts of the support columns 11A, and repositioning the reaction members 41 downward. In the process of temporarily supporting the crane installation floor 20 on the support columns 11A, the anti-sway device 24 holds down the sides of the support columns 11A to suppress horizontal shaking of the crane installation floor 20. Therefore, even if an earthquake occurs, the building 1 can be dismantled safely in a short period of time.

Third Embodiment
In this embodiment, the configuration of a support plate 90B on which the anti-sway device 24 is placed is different from that of the first and second embodiments.
Fig. 26 is a plan view of the support plate 90B with the anti-sway device 24 attached. Fig. 27 is a plan view of the support plate 90B with the anti-sway device 24 removed.
That is, the support plate 90B comprises a base plate 91 attached to the beam members 53A, 53B of the crane installation floor 20, and a slide plate 92 slidably arranged on the base plate 91.

Wall portions 911A, 911B extending along the beam members 53A, 53B side and substantially orthogonal to each other in a plan view are provided on the edge of the base plate 91 on the side of the beam members 53A, 53B. A groove 912 extending at approximately 45° to the wall portions 911A, 911B substantially orthogonal to each other in a plan view is formed on the upper surface of the base plate 91. A long hole 913 extending along the groove 912 is formed in the base plate 91.
Walls 921A, 921B that are substantially perpendicular to each other in a plan view are provided on the edge of the slide plate 92 on the side of the beam members 53A, 53B. A protrusion 922 (shown by diagonal lines in FIGS. 27 and 28) that fits into the groove 912 of the base plate 91 is formed on the underside of the slide plate 92. A bolt 923 that is inserted into and engaged with an elongated hole 913 of the base plate 91 is provided on the slide plate 92.

In the support plate 90B, as shown in FIG. 28, the slide plate 92 is slid relative to the base plate 91 so that the slide plate 92 approaches or moves away from the corner of the support post 11A.
Specifically, the protrusions 922 of the slide plate 92 slide in the grooves 912 of the base plate 91, and the bolts 923 of the slide plate 92 move along the long holes 913 of the base plate 91, causing the slide plate 92 to slide relative to the base plate 91. At this time, the bolts 923 are engaged with the long holes 913, preventing the slide plate 92 from falling off the base plate 91.

In this embodiment, as shown in FIG. 28, after the slide plate 92 is slid relative to the base plate 91, Uniblock (registered trademark, manufactured by Nissho Corporation) 93A, 93B, which is a backfilling material for retaining the mountain, is placed between the wall portion 911 of the base plate 91 and the wall portion 921 of the slide plate 92 and braced, thereby keeping the column holding portion 84 of the anti-vibration device 24 in contact with the side of the support column 11A.
According to this embodiment, there are advantages similar to those of (1) to (3) above.

The present invention is not limited to the above-described embodiment, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention.
For example, in the above-mentioned third embodiment, Uniblocks (registered trademark, manufactured by Nissho Corporation) 93A, 93B are arranged between the wall portion 911 of the base plate 91 and the wall portion 921 of the slide plate 92 to provide tension therebetween, but this is not limited to this and any member having a jack function may be used.

1... Building (structure) 2... Building construction system (floor frame lifting system)
3... Existing building (structure) 4... Building demolition system (floor frame lifting system)
Reference Signs List 11: Pillar 11A: Support pillar 12: Beam 13: Floor 14: Precast concrete member 15: Joint 20: Crane installation floor (floor frame) 21: Crane 22: Lifting device 23: Locking device 24: Anti-sway device 30: Beam member 31: Floor member 32: Base 33: Mast 34: Crane body 35: Jib 36: Hoisting device 40, 40A: Frame 41, 41A: Reaction member 42: Suspension member 43: Strand jack (lifting jack)
50...Frame base 51...Jack support portion 52...Suspension member support portion 53A, 53B...Beam member 60...Latching portion 61...Connecting beam 62...Beam temporary fixing mechanism 63...Communicating hole 64...Wedge 65...Pressing bolt 70...Latching beam 71A, 71B...Opening and closing mechanism 72...Support portion 73...Moving mechanism 74...Motor 75...Pulley 76...Chain 77...Screw 80...Base 81...Moving portion 82...First moving mechanism 83...Guide mechanism 84...Column holding portion 85...Second moving mechanism 86...Lock mechanism 90, 90B...Support plate 721...Horizontal piece 722...Vertical piece 821...Female thread portion 822...Bolt 831...Elongated hole 832...Bolt 841...Insertion portion 851...Fixed portion 852: Male thread 853: Nut 861: Holding portion 862: Long hole 863: Bolt 864: Nut 911A, 911B: Wall portion 912: Groove 913: Long hole 921A, 921B: Wall portion 922: Projection 923: Bolt 93A, 93B: Uniblock

Claims (3)

A floor frame lifting system for lifting and lowering a floor frame along a support column, comprising:
The floor frame;
A reaction member installed on an upper portion of the support column;
a lifting device attached to the reaction member for lifting and lowering the floor frame;
Equipped with
The lifting device includes a lifting jack for lifting and lowering the floor frame, and a vibration suppression device for suppressing horizontal vibration of the floor frame,
The anti-vibration device includes a base supported by the floor frame;
A moving part disposed on the base part;
a first moving mechanism that moves the moving part relative to the base part in a predetermined direction in a horizontal plane;
A pillar holder that can abut against a side surface of the support pillar;
A floor frame lifting system characterized by comprising a second moving mechanism that moves the column holding portion relative to the moving portion in a direction that intersects a predetermined direction in the horizontal plane. 13. A method for constructing a structure using the floor frame lifting system of claim 1, comprising:
A first step of using at least four permanent columns as support columns, attaching reaction members to the upper ends of the support columns, temporarily supporting the floor frame on the support columns, and preventing the floor frame from vibrating by pressing the side surfaces of the support columns with the vibration prevention device;
A second step of constructing the structure for a predetermined number of floors;
a third step of attaching a pillar member to the top of the support pillar and extending it upward, and lifting the reaction member and repositioning it upward;
a fourth step of releasing the vibration prevention by the vibration prevention device and the temporary support of the floor frame by the support column, raising the floor frame along the support column by the lifting jack device, temporarily supporting the floor frame on the support column again, and preventing the vibration of the floor frame by the vibration prevention device;
A method for constructing a structure, comprising a fifth step of repeating the second step to the fourth step. A method for dismantling a structure using the floor frame lifting system of claim 1, comprising:
A first step of using at least four permanent columns as support columns, attaching reaction members to the upper ends of the support columns, temporarily supporting the floor frame on the support columns, and preventing the floor frame from vibrating by pressing the side surfaces of the support columns with the vibration prevention device;
A second step of disassembling the structure into predetermined floors;
A third step of releasing the vibration prevention by the vibration prevention device and the temporary support of the floor frame by the support column, lowering the floor frame along the support column by the lifting jack device, and then temporarily supporting the floor frame on the support column again to prevent vibration of the floor frame by the vibration prevention device;
A fourth step of dismantling the upper part of the support pillar and lifting the reaction member and placing it downward;
a fifth step of repeating the second step to the fourth step.

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