Upper column erection support device and upper column erection support method

Abstract

To provide an erection support device 5 of an upper pillar 1 capable of support erection of the upper pillar 1 by raising the upper pillar 1 above the lower pillar 2, and an election support method of the upper pillar 1.SOLUTION: An erection support device 5 of an upper pillar 1 supports the erection of the upper pillar 1 transported in a state of being laid down with the longitudinal direction approximately horizontal. The erection support device includes a first contact part 143 that comes into contact with a first supported part 21 placed below the lower end of the upper pillar 1 in a lying state to support, and a pivoting part (second contact part 144) that is placed in a position diagonally above the first contact part 143 and pivots the upper pillar 1 whose upper end is lifted. The first contact part 143 and the pivoting part (second contact part 144) are placed across pillar 2 and placed on a floor slab 4 adjacent to the lower pillar 2.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to an upper column erection support device and an upper column erection support method that support the erection of upper columns that have been carried in, for example, in a lying state. [Background technology]

[0002] For example, when constructing a building such as a station above a railway track, the columns of the building may be assembled by connecting upper columns to lower columns that penetrate a deck installed above the track. At the construction site, the long upper columns are brought onto the deck in a horizontal position, and then the track is closed off before the upper columns are attached to the lower columns. This means that at the construction site, the upper columns must be erected on the deck in a horizontal position.

[0003] As a technology for assisting in the erection of such upper columns, for example, Patent Document 1 discloses a method in which a column support base equipped with wheels is connected to the lower end of the upper column, and as the upper end of the upper column is lifted, the column support base runs on the deck slab, thereby assisting in the erection of the upper column in a reclined position.

[0004] However, in Patent Document 1, the pillar support base moves as the upper end of the upper pillar is lifted, so the upper pillar cannot be erected above the lower pillar. For this reason, in Patent Document 1, after the upper pillar is lifted and erected, it is necessary to rotate the heavy equipment and move the upper pillar above the lower pillar.

[0005] However, when the erected upper pillar is moved above the lower pillar, there is a risk that the upper pillar will swing significantly as the heavy equipment rotates, which is undesirable from a safety standpoint. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-139702 Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above-mentioned problems, the present invention aims to provide an upper column installation support device and an upper column installation support method that can support the installation of an upper column by erecting the upper column above a lower column. [Means for solving the problem]

[0008] This invention is an upper column installation support device that supports the installation of an upper column that has been brought in in a lying state so that its longitudinal direction is approximately horizontal, and is equipped with a contact portion that supports by contact a supported portion provided below the lower end of the upper column when it is lying down, and a pivot portion that is provided at a position diagonally above the contact portion and pivots the upper column whose upper end opposite the lower end is lifted, and is characterized in that the contact portion and the pivot portion are arranged on either side of the lower column and are placed on the floor surface adjacent to the lower column.

[0009] The present invention also provides a method for assisting in the installation of an upper column that has been brought in while lying down so that its longitudinal direction is approximately horizontal, and is characterized by the steps of: abutting a supported portion provided below the lower end of the upper column when it is lying down against an abutment portion placed on the floor surface adjacent to the lower column; lifting the upper end of the upper column, whose lower end is supported by the abutment portion, and starting to rotate the upper column around the point of abutment with the abutment portion; and rotating the upper column, whose upper end has been lifted, around a pivot portion that is provided at a position diagonally above the abutment portion across the lower column and placed on the floor surface adjacent to the lower column.

[0010] The floor surface may be, for example, a floor slab, a concrete surface, or the ground. According to the present invention, the upper column erection support device and the upper column erection support method can erect the upper column above the lower column to support the erection of the upper column.

[0011] Specifically, since the supported portion of the upper column is supported by the abutting portion, the upper column installation support device and upper column installation support method can rotate the upper column around the point of abutment between the supported portion and the abutting portion as the center of rotation when the upper end of the upper column is lifted up.

[0012] Furthermore, by using a pivot part arranged diagonally above and opposite the abutment part, the upper column installation support device and upper column installation support method can transition the upper column, which rotates around the point of abutment between the supported part and the abutment part, to rotate around the pivot part. Therefore, the upper column installation support device and upper column installation support method can suppress the swinging of the upper column just before it is erected, since the center of gravity of the rotating upper column does not exceed the center of rotation.

[0013] In this way, the abutment part and pivot part that raise the upper column are placed on the floor surface with the lower column in between, so the upper column erection support device and upper column erection support method can erect the upper column in a reclined position while always positioning the lower end of the upper column above the lower column.

[0014] As a result, the upper pillar installation support device and upper pillar installation support method can reduce the rotation distance of the heavy equipment even if the erected upper pillar is misaligned with the lower pillar, thereby suppressing the swaying movement of the erected upper pillar.

[0015] Therefore, the upper pole installation support device and the upper pole installation support method can support the installation of the upper pole by erecting the upper pole above the lower pole. Therefore, the upper pole installation support device and the upper pole installation support method can erect the upper pole that has been brought in in a lying state without, for example, closing the track.

[0016] As an aspect of this invention, the supported portion of the upper pillar may be a first supported portion, the abutting portion may be a first abutting portion, and the pivoting portion may be composed of a second abutting portion that supports by abutting a second supported portion provided at the lower end of the upper pillar opposite the first supported portion.

[0017] With this configuration, the upper column setup support device can support the upper column, which rotates around the point of contact with the first abutment, with the second abutment as the upper end of the upper column is lifted. Therefore, the upper column setup support device can rotate the upper column around the point of contact with the second abutment.

[0018] Furthermore, the upper-pole installation support device can shift the center of rotation from the first contact part to the second contact part with a simple configuration, which helps prevent weight increase. This makes it easy to install upper poles even on decks installed above tracks, for example.

[0019] As a further aspect of the present invention, the first contact portion and the second contact portion may be connected to each other across the lower pillar. With this configuration, when the center of rotation of the upper column shifts from the point of contact with the first abutment portion to the point of contact with the second abutment portion, the upper column installation support device can prevent the second abutment portion from moving away from the first abutment portion due to the weight of the upper column.

[0020] This allows the upper column setup support device to reliably bring the second supported part of the upper column, which rotates around the first abutment part, into contact with the second abutment part, thereby enabling the upper column setup support device to more safely support the erection of the upper column.

[0021] Furthermore, the upper column installation support device can make it easier to install and remove the first abutment portion and the second abutment portion compared to when the first abutment portion and the second abutment portion are not connected, thereby improving work efficiency.

[0022] In another aspect of the present invention, the pivot portion may be configured to pivotally connect a bridge portion extending diagonally upward from one end to which the abutment portion is connected, to a support portion supporting the other end of the bridge portion, and may be provided with a pressing mechanism portion that presses one end of the bridge portion upward.

[0023] With this configuration, the upper column erection support device can rotate the upper column around the pivot part by using the pressing mechanism that presses one end of the bridging part upward. At this time, the upper column erection support device can simultaneously rotate the upper column around the point of contact with the abutment part and around the pivot part. Therefore, the upper column erection support device can efficiently support the erection of the upper column.

[0024] Furthermore, because the lower end of the upper column is supported by the abutment, the upper column's swaying movement caused by rotation around the pivot can be suppressed, allowing the upper column setup support device to support safer erection of the upper column.

[0025] In another aspect of the present invention, a rotation mechanism may be provided that rotates the contact portion and the pivot portion together in the horizontal direction around the lower pillar. According to this configuration, the upper column erection support device can erect the upper column while rotating the upper column in a rotational direction with the up-down direction as the rotation center. Alternatively, the upper column installation support device can rotate the erected upper column directly above the lower column, with the vertical direction as the center of rotation.

[0026] Therefore, the upper column installation support device can easily align the orientation of the upper column with the lower column in the rotation direction around the vertical direction. At this time, because the abutment part or pivot part supports the upper column, the upper column installation support device can suppress swaying of the upper column due to rotation around the vertical direction.

[0027] In addition, the upper column setup support device can rotate the upper column in a smaller space than when the upper column is laid down and rotated around the vertical direction as the center of rotation. Therefore, the upper column setup support device makes it even easier to erect the upper column above the lower column.

[0028] In another aspect of the present invention, a damping mechanism may be provided to reduce the descending speed of the upper column. Reducing the descent speed of the upper pillar means reducing the descent speed when the lifted upper pillar is lowered, or reducing the falling speed when the upper pillar falls.

[0029] With this configuration, the lowering speed when placing the lower column on the upper column can be slowed down, so that the upper column installation support device can prevent the upper column from colliding forcefully with the lower column when the lifted upper column is lowered to abut against the lower column.

[0030] Furthermore, even if the upper column should sway, the damping mechanism can reduce the swaying, so the upper column installation support device can prevent damage to the floor surface due to contact with the upper column, for example. This allows the upper pillar installation support device to improve safety when installing the upper pillars. [Effects of the Invention]

[0031] The present invention can provide an upper column erection support device and an upper column erection support method that can erect an upper column above a lower column and support the erection of the upper column. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 10 is an explanatory diagram illustrating an outline of the upper pillar. [Figure 2] An explanatory diagram illustrating the outline of the upper pillars during delivery. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 10 is an explanatory diagram illustrating an outline of a supported part attached to an upper column. [Figure 6] A front view showing the state in which the lower pillar and the upper pillar are connected by a damper. [Figure 7] FIG. 10 is a front view illustrating the process of placing the upper column on the support frame. [Figure 8] FIG. 10 is an explanatory diagram showing the state of the upper column from the front when lifting of the upper end portion has begun. [Figure 9]An explanatory diagram showing the state of the upper pillar during the erection process from a front view. [Figure 10] An explanatory diagram illustrating the state of the erected upper pillar from a front view. [Figure 11] FIG. 10 is a front view illustrating the process of bringing the upper pillar into contact with the lower pillar. [Figure 12] FIG. 10 is a front view showing the appearance of a support stand in a second embodiment. [Figure 13] FIG. 10 is an explanatory diagram illustrating the operation of the support frame in the second embodiment. [Figure 14] FIG. 10 is an explanatory diagram illustrating an outline of a support frame in a third embodiment. [Figure 15] FIG. 10 is an explanatory diagram illustrating an outline of a support frame in a fourth embodiment. [Figure 16] FIG. 10 is an explanatory diagram illustrating the operation of the support frame in the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0033] An embodiment of the present invention will be described below with reference to the drawings. [Example]

[0034] In this embodiment, a construction support device 5 that supports the construction of an upper pillar 1 that has been carried in in a lying state will be described with reference to FIGS. 1 to 6. FIG. Note that Figure 1 shows an explanatory diagram outlining the upper pillar 1, Figure 2 shows an explanatory diagram outlining the upper pillar 1 during delivery, Figure 3 shows a front view of the support frame 10, and Figure 4 shows a plan view of the support frame 10.

[0035] Furthermore, Figure 5 is an explanatory diagram outlining the supported part attached to the upper column 1, where Figure 5(a) shows a side view of the upper column 1 in a reclined position, and Figure 5(b) shows a front view of the upper column 1 in a reclined position. In addition, FIG. 6 shows a front view of the state in which the lower column 2 and the upper column 1 are connected by the damper 23.

[0036] 1 is the upper side in this embodiment, and the lower side in FIG. 1 is the lower side in this embodiment, and the arrow X in the figure indicates the front-to-back direction of the support frame 10 (hereinafter referred to as the front-to-back direction X), and the arrow Y in the figure indicates the width direction of the support frame 10 (hereinafter referred to as the width direction Y).

[0037] First, as shown in Figure 1, the upper pillar 1 is connected to the upper end of the lower pillar 2, the lower end of which is fixed to a foundation or the like, and forms a steel pillar 3 of a building such as a station building constructed above a railway track. As shown in Figure 1, when connected to the lower column 2, the upper column 1 is a tubular steel frame with its longitudinal direction extending vertically, and its cross-sectional shape along the horizontal direction (short side direction) is formed into an approximately rectangular shape (see Figure 5).

[0038] Furthermore, as shown in FIG. 1, four lower erection pieces 1a arranged at the lower end, which is the lower end, and four upper erection pieces 1b arranged at the upper end, which is the upper end, are joined to each outer surface of the upper pillar 1. In addition, as shown in FIG. 1, four beam brackets 1c arranged below the upper erection piece 1b are joined to each outer surface of the upper column 1.

[0039] As shown in Figure 2, such an upper pillar 1 is brought onto the deck slab 4 described later in a lying state (sideways) so that the longitudinal direction is approximately horizontal, and its erection is assisted above the lower pillar 2 by the erection support device 5 described later.

[0040] As shown in Figure 1, the lower pillar 2 is a cylindrical steel frame extending in the vertical direction, and its cross-sectional shape along the horizontal direction (short side direction) is formed into a roughly rectangular cross-section that is roughly the same size as the upper pillar 1 (see Figure 4). As shown in FIG. 1, four upper erection pieces 2a arranged at the upper end, which is the upper end of this lower pillar 2, and four beam brackets 2b arranged below the upper erection piece 2a are joined to each outer surface.

[0041] Furthermore, as shown in Figure 1, the floor slab 4, which will be the floor part of the building, is joined to the lower column 2 between the upper erection piece 2a and the beam bracket 2b. For this reason, the lower column 2 is arranged so that its upper end protrudes above the floor slab 4. The deck slab 4 is composed of, for example, a deck plate or a covering plate, although detailed illustration is omitted.

[0042] Next, the erection support device 5 that supports the erection of the upper pillar 1 that has been carried in in a lying state will be described in detail. The construction support device 5 is composed of a support stand 10 (see Figure 2) placed on the deck slab 4 across the lower column 2, a first supported part 21 and a second supported part 22 (see Figure 5) attached to the upper column 1, and a pair of dampers 23 (see Figure 6) connecting the upper column 1 to the lower column 2.

[0043] As shown in Figures 3 and 4, the support frame 10 is placed on the deck slab 4 so as to straddle the upper end of the lower column 2, and is configured to support one end side, which is the lower end of the upper column 1, above the lower column 2. As shown in Figures 3 and 4, this support stand 10 comprises a support base 11 that is shaped like a grid when viewed from above, a pair of first support pillars 12 and a pair of second support pillars 13 extending upward from the support base 11, and a stand main body 14 supported by the first support pillars 12 and the second support pillars 13.

[0044] More specifically, as shown in Figures 3 and 4, the support base 11 is configured in a roughly parallel cross shape in a plan view, with a pair of girder portions 111 arranged at a predetermined distance in the front-to-rear direction X, and a pair of beam portions 112 connecting the pair of girder portions 111 in the front-to-rear direction X. Furthermore, as shown in Figures 3 and 4, the support base 11 has four wheel mechanism units 113 provided at both ends of the girder unit 111 in the width direction Y, and a connecting rod 114 connecting opposing wheel mechanism units 113 in the front-to-rear direction X.

[0045] 3 and 4, the pair of girder parts 111 are H-shaped steel beams extending in a predetermined direction, and are arranged at positions spaced apart in the front-rear direction X by a distance greater than the outer shape of the lower column 2, with their longitudinal directions aligned with the width direction Y. The pair of girder parts 111 are arranged so that their webs face each other in the front-rear direction X.

[0046] 3 and 4, the pair of beams 112 connect the pair of girder sections 111 closer to the center in the width direction Y than the wheel mechanism section 113. As shown in FIGS. 3 and 4, the pair of beams 112 are H-shaped steels extending in a predetermined direction, and are arranged at positions separated by a distance in the width direction Y that is larger than the outer shape of the lower column 2, with their longitudinal direction aligned with the front-rear direction X. The pair of beam portions 112 are arranged such that the webs thereof face each other in the width direction Y.

[0047] As shown in FIG. 3, the wheel mechanism 113 includes two wheels 113a arranged side by side in the width direction Y and rotatable about a rotation axis in the front-rear direction X. As shown in FIGS. 3 and 4, the connecting rod 114 is a round steel rod extending in a predetermined direction, and connects the ends of the wheel mechanism parts 113 in the width direction Y in the front-rear direction X.

[0048] 3, the first support column 12 and the second support column 13 are joined to the upper surface of the girder 111 of the support base 11 at an interval in the width direction Y that is larger than the outer shape of the lower column 2. The first support column 12 and the second support column 13 are formed with a length in the up-down direction that supports the gantry body 14, in a state inclined at an angle of approximately 10 degrees with respect to the width direction Y when viewed from the front.

[0049] Specifically, as shown in Fig. 3, the pair of first support pillars 12 are arranged on one end side (right side in Fig. 3) of the girder 111 in the width direction Y, at approximately the same position in the width direction Y as the beam 112. As shown in Fig. 3, the first support pillars 12 are formed with a length in the vertical direction such that their upper ends are located slightly above the upper ends of the lower pillars 2.

[0050] 3, the pair of second support pillars 13 are disposed on the other end side (left side in FIG. 3) of the girder 111 in the width direction Y, at substantially the same position in the width direction Y as the beam 112. As shown in FIG. 3, the second support pillars 13 are formed with a longer vertical length than the first support pillars 12.

[0051] As shown in Figures 3 and 4, the mounting body 14 is composed of a pair of bridging sections 141 bridged between the first support section 12 and the second support section 13, a pair of connecting sections 142 connecting the pair of bridging sections 141 in the front-to-rear direction X, and a plurality of first abutment sections 143 and second abutment sections 144 erected on the upper surface of the connecting sections 142.

[0052] Specifically, as shown in Figures 3 and 4, the pair of bridge sections 141 are H-shaped steel beams extending in a predetermined direction, and are arranged so that their longitudinal direction coincides with the width direction Y. The pair of bridge sections 141 are arranged so that their webs face each other in the front-rear direction X.

[0053] 3, the pair of connecting portions 142 are H-shaped steel beams extending in a predetermined direction, and connect the pair of bridging portions 141 at positions spaced apart in the front-rear direction X by a distance greater than the outer diameter of the lower column 2. The pair of connecting portions 142 are arranged so that the webs face each other in the width direction Y.

[0054] More specifically, as shown in Figures 3 and 4, one of the connecting portions 142 connects the pair of bridging portions 141 closer to the second support portion 13 than the first support portion 12, and the other connecting portion 142 connects the pair of bridging portions 141 at approximately the same position as the second support portion 13.

[0055] 3 and 4, the first contact portions 143 are joined to the upper surface of the connecting portion 142 on the first support portion 12 side at predetermined intervals in the front-rear direction X. 3 and 4, the first contact portion 143 is plate-shaped with a thickness in the front-rear direction X, and has a notched portion 143a at its upper end that is recessed downward in a generally semicircular shape when viewed from the front. This notched portion 143a is formed as a portion against which the first supported portion 21 provided on the upper pillar 1 comes into contact in order to erect the upper pillar 1.

[0056] 3 and 4, the plurality of second contact portions 144 are joined to the upper surface of the connecting portion 142 on the second support column 13 side at predetermined intervals in the front-rear direction X. The second contact portions 144 are provided as pivot portions whose lower ends are supported by the first contact portions 143 and whose upper ends are lifted up, and which rotate the upper column 1 about a position diagonally above the first contact portions 143.

[0057] 3 and 4, the second contact portion 144 is plate-shaped with a thickness in the front-rear direction X, and has a notched portion 144a at its upper end that is recessed downward in a generally semicircular shape when viewed from the front. This notched portion 144a is formed as a portion against which the second supported portion 22 provided on the upper pillar 1 comes into contact in order to erect the upper pillar 1.

[0058] In addition, the first supported portion 21 and the second supported portion 22 provided on the upper pillar 1 are round steel bars extending in a predetermined direction, as shown in Figure 5, and are arranged opposite each other at a distance approximately equal to the distance between the first abutment portion 143 and the second abutment portion 144 along the longitudinal direction of the bridge portion 141.

[0059] Specifically, as shown in FIG. 5, the first supported part 21 is arranged below the upper pillar 1 in a state where the upper pillar 1 is laid so that the longitudinal direction is approximately horizontal, and is fixed to the lower erection piece 1a protruding downward via an attachment member 24. As shown in FIG. 5(a), the first supported portion 21 is disposed so that its axial direction coincides with the front-rear direction X.

[0060] In addition, as shown in FIG. 5, the second supported portion 22 is arranged above the upper pillar 1 when the upper pillar 1 is laid down so that the longitudinal direction is approximately horizontal, and is fixed to the lower erection piece 1a protruding upward via an attachment member 24. As shown in FIG. 5(a), the second supported portion 22 is disposed so that its axial direction coincides with the front-rear direction X.

[0061] The mounting member 24 is a plate material that holds the lower erection piece 1a, as shown in FIG. 5, for example, and one end is fixed to the lower erection piece 1a, and the first supported part 21 or the second supported part 22 is joined to the other end.

[0062] In addition, a pair of dampers 23 connecting the upper column 1 to the lower column 2 are, for example, hydraulic dampers consisting of a cylindrical portion and a piston rod, and are provided to support the downward load that increases as the column is erected and to suppress the descent speed of the upper column 1.

[0063] Of the pair of dampers 23, one damper 23 connects the front surface of the upper column 1 to the front surface of the lower column 2, and the other damper 23 connects the back surface of the upper column 1 to the back surface of the lower column 2. Specifically, as shown in FIG. 6, the upper end (cylindrical part) of the damper 23 is attached to the lower erection piece 1a of the upper column 1 via the upper column mounting member 25, and the lower end (piston rod) is attached to the upper erection piece 2a of the lower column 2 via the lower column mounting member 26. The upper and lower ends of the damper 23 are connected to an upper pole mounting member 25 and a lower pole mounting member 26, respectively, in a state in which they can rotate freely around the front-rear direction X as a rotation axis.

[0064] Next, the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 5 configured as described above will be described with reference to FIGS. Note that Figure 7 shows an explanatory diagram from a front view illustrating the process of placing the upper column 1 on the support stand 10, and Figure 8 shows an explanatory diagram from a front view illustrating the state of the upper column 1 once lifting of the upper end has begun.

[0065] Furthermore, Figure 9 shows an explanatory diagram from a front view illustrating the state of the upper pillar 1 during the erection process, Figure 10 shows an explanatory diagram from a front view illustrating the state of the erected upper pillar 1, and Figure 11 shows an explanatory diagram from a front view illustrating the process of bringing the upper pillar 1 into contact with the lower pillar 2.

[0066] First, as shown in Fig. 2, a worker lifts the support platform 10 using a chain block or crane and places it on the deck slab 4 so that it straddles the upper ends of the lower columns 2. At this time, the worker adjusts the position so that the lower columns 2 are positioned approximately in the center of the support base 11 in a plan view, and then places the support platform 10 on the deck slab 4, as shown in Fig. 4.

[0067] Thereafter, the worker restricts the movement of the support cradle 10 by chocks or the like on the wheels 113a, and completes the installation of the support cradle 10. Once the support frame 10 is installed, a worker uses heavy machinery such as a crane to lift the upper column 1, which has the first supported portion 21 and the second supported portion 22 already attached, in a lying position, to a height that is not too far away from the support frame 10, as shown in Figure 2.

[0068] Furthermore, the worker moves the upper pillar 1 in a lying position horizontally so that the upper pillar 1 is positioned on the first abutment portion 143 side of the support frame 10 and the first supported portion 21 of the upper pillar 1 is positioned above the first abutment portion 143, as shown in Figure 2.

[0069] When the upper column 1 is moved horizontally, the worker lowers the upper column 1 in a lying position, as shown in Figure 7, and places the first supported portion 21 of the upper column 1 on the cutout portion 143a of the first abutment portion 143 so that it abuts against it. The vicinity of the beam bracket 1c of the upper column 1 is supported by an appropriate jig 6 placed on the deck slab 4 in advance, as shown in FIG.

[0070] After that, as shown in FIG. 6, the worker connects the lower column 2 and the upper column 1 with the damper 23, and connects the wire for lifting the upper end of the upper column 1 to the upper erection piece 1b of the upper column 1, thereby completing preparations for lifting the upper column 1.

[0071] When the preparation for lifting the upper pole 1 is completed, the worker starts lifting the upper end of the upper pole 1 using heavy machinery such as a crane, as shown in FIG. When the upper end is lifted, the upper column 1 begins to rotate counterclockwise when viewed from the front, with the upper end facing upward, around the point of contact between the first abutment portion 143 of the support frame 10 and the first supported portion 21 of the upper column 1 as the center of rotation, as shown in Figure 8.

[0072] At this time, as shown in Figures 6, 8, and 9, the connection points of the damper 23 with the upper column 1 and the lower column 2 rotate in response to the rotation of the upper column 1, and also contract in response to the rotation of the upper column 1, thereby absorbing the downward load component that increases as the upper column 1 rises.

[0073] Thereafter, as the lifting of the upper end portion progresses, the second supported portion 22 of the upper column 1 comes into contact with the second contact portion 144 of the support frame 10 so as to be placed on the second contact portion 144, as shown in FIG. As the lifting of the upper end portion progresses further, the upper column 1 rotates counterclockwise when viewed from the front, with the point of contact between the second abutment portion 144 and the second supported portion 22 as the center of rotation, so that the upper end portion of the upper column 1 faces in the width direction Y, as shown in Figures 9 and 10.

[0074] The worker operating the heavy equipment lifts the upper end of the upper pillar 1, which rotates around the point of contact between the second abutment portion 144 and the second supported portion 22, until it stands up, and then stops lifting the upper pillar 1. At this time, the upper pillar 1 is in an upright position with its longitudinal direction being approximately vertical, at a position slightly offset in the width direction Y relative to the lower pillar 2, as shown in FIG.

[0075] Thereafter, with the upper column 1 lifted, the worker removes the dampers 23 from the upper column 1 and the lower column 2, and then removes the support frame 10 from the deck slab 4 using a chain block or the like. Furthermore, as shown in Figure 11, the worker removes the first supported part 21 and the second supported part 22 from the upper pillar 1 together with the mounting member 24, and then slightly rotates the heavy equipment to position the upper pillar 1 directly above the lower pillar 2.

[0076] When the upper column 1 is moved directly above the lower column 2, the worker lowers the upper column 1 to abut against the upper end of the lower column 2, and then connects the lower erection piece 1a of the upper column 1 and the upper erection piece 1b of the lower column 2 using appropriate members.

[0077] Thereafter, the worker joins the lower column 2 and the upper column 1 by welding to form the steel column 3. In this way, the erection support device 5 of the first embodiment makes it possible to erect the upper pillar 1 lying down above the lower pillar 2, thereby supporting the erection of the upper pillar 1.

[0078] As described above, the setup support device 5 for the upper pillar 1 in Example 1 is a device that supports the setup of the upper pillar 1 that is carried in lying down so that the longitudinal direction is approximately horizontal. The setup support device 5 for this upper column 1 is provided with a first abutment portion 143 that abuts and supports the first supported portion 21 provided below the lower end of the upper column 1 when it is laid down.

[0079] Furthermore, the installation support device 5 for the upper column 1 is provided at a position diagonally above the first abutment portion 143 and is equipped with a pivot portion (second abutment portion 144) that pivots the upper column 1 whose upper end portion opposite the lower end portion is lifted up. The first contact portion 143 and the pivot portion (second contact portion 144) are disposed with the lower column 2 therebetween, and are placed on the deck slab 4 adjacent to the lower column 2.

[0080] Furthermore, the method for supporting the erection of the upper column 1 in Example 1 is a method for supporting the erection of the upper column 1 that has been carried in lying down so that its longitudinal direction is approximately horizontal. This method of supporting the erection of the upper column 1 involves a process of abutting the first supported portion 21 provided below the lower end of the upper column 1 in a laid-down state against the first abutment portion 143 placed on the deck slab 4 adjacent to the lower column 2.

[0081] Furthermore, the method for supporting the installation of the upper column 1 involves lifting up the upper end of the upper column 1, whose lower end is supported by the first abutment portion 143, and starting to rotate the upper column 1 around the point of abutment with the first abutment portion 143.

[0082] Thereafter, the method for supporting the installation of the upper column 1 involves rotating the upper column 1, whose upper end is lifted, around a pivot part (second abutment part 144) that is located diagonally above the first abutment part 143 across the lower column 2 and placed on the deck slab 4 adjacent to the lower column 2.

[0083] According to this configuration, the upper column 1 erection support device 5 and the upper column 1 erection support method can erect the upper column 1 above the lower column 2 and support the erection of the upper column 1. Specifically, since the first supported portion 21 of the upper column 1 is supported by the first abutment portion 143, the installation support device 5 for the upper column 1 and the installation support method for the upper column 1 can rotate the upper column 1 around the point of abutment between the first supported portion 21 and the first abutment portion 143 as the center of rotation when the upper end portion of the upper column 1 is lifted up.

[0084] Furthermore, by using a pivot part (second abutment part 144) arranged diagonally above and opposite the first abutment part 143, the upper column 1 installation support device 5 and the upper column 1 installation support method can transition the upper column 1, which rotates around the abutment point between the first supported part 21 and the first abutment part 143, to rotate around the pivot part (second abutment part 144).

[0085] Therefore, the upper column 1 installation support device 5 and the upper column 1 installation support method can suppress the swinging of the upper column 1 just before it is erected, since the center of gravity of the rotating upper column 1 does not exceed the center of rotation.

[0086] In this way, the first abutment portion 143 and the pivot portion (second abutment portion 144) that raise the upper column 1 are placed on the deck slab 4 with the lower column 2 in between, so the upper column 1 erection support device 5 and the upper column 1 erection support method can erect the upper column 1 in a reclined state while always positioning the lower end of the upper column 1 above the lower column 2.

[0087] As a result, the upper column 1 installation support device 5 and the upper column 1 installation support method can reduce the rotation distance of the heavy equipment even if the erected upper column 1 is misaligned with respect to the lower column 2, thereby suppressing the swaying movement of the erected upper column 1.

[0088] Therefore, the upper pole 1 erection support device 5 and the upper pole 1 erection support method can erect the upper pole 1 above the lower pole 2 and support the safe erection of the upper pole 1. Therefore, the upper pole 1 erection support device 5 and the upper pole 1 erection support method can erect the upper pole 1 that has been carried in a lying state without, for example, closing the track.

[0089] The pivot portion is also configured with a second abutment portion 144 that supports, by abutment, a second supported portion 22 that is provided at the lower end of the upper column 1 opposite the first supported portion 21.

[0090] According to this configuration, the setup support device 5 for the upper column 1 can support the upper column 1, which rotates around the point of contact with the first abutment portion 143, with the second abutment portion 144 as the upper end of the upper column 1 is lifted. Therefore, the setup support device 5 for the upper column 1 can rotate the upper column 1 around the point of contact with the second abutment portion 144.

[0091] Furthermore, the upper column 1 installation support device 5 can shift the center of rotation from the first contact part 143 to the second contact part 144 with a simple configuration, thereby suppressing an increase in weight. Therefore, the upper column 1 installation support device 5 can easily install the upper column 1 even on a deck slab 4 installed above the tracks.

[0092] The first contact portion 143 and the second contact portion 144 are connected to each other across the lower pillar 2 . According to this configuration, when the center of rotation of the upper column 1 shifts from the point of contact with the first abutment portion 143 to the point of contact with the second abutment portion 144, the installation support device 5 for the upper column 1 can prevent the second abutment portion 144 from moving away from the first abutment portion 143 due to the weight of the upper column 1.

[0093] As a result, the setup support device 5 for the upper column 1 can reliably bring the second supported portion 22 of the upper column 1, which rotates around the first abutment portion 143, into abutment with the second abutment portion 144. Therefore, the setup support device 5 for the upper column 1 can more safely support the erection of the upper column 1.

[0094] Furthermore, the installation support device 5 for the upper column 1 makes it easier to install and remove the first abutment portion 143 and the second abutment portion 144 compared to when the first abutment portion 143 and the second abutment portion 144 are not connected, thereby improving work efficiency.

[0095] In addition, the installation support device 5 for the upper column 1 is equipped with a damper 23 that reduces the descent speed of the upper column 1. With this configuration, the lowering speed when placing the lower column 2 on the upper column 1 can be made slower, so that the installation support device 5 for the upper column 1 can prevent the upper column 1 from colliding forcefully with the lower column 2 when lowering the lifted upper column 1 to abut against the lower column 2.

[0096] Furthermore, even if the upper column 1 should shake, the shaking can be reduced by the damper 23, so the installation support device 5 for the upper column 1 can prevent damage to the deck slab 4 due to contact with the upper column 1, for example. As a result, the upper pillar 1 erection support device 5 can improve safety when erecting the upper pillar 1. [Example]

[0097] A construction support device 5 of a second embodiment, which has a different support frame configuration from the construction support device 5 of the first embodiment described above, will be described with reference to FIGS. 12 and 13. FIG. FIG. 12 shows a front view of the support frame 30 in the second embodiment.

[0098] Furthermore, Figure 13 is an explanatory diagram explaining the operation of the support stand 30 in Example 2, where Figure 13(a) shows a front view of the hydraulic jack 31 in a lowered state, and Figure 13(b) shows a front view of the hydraulic jack 31 in a raised state. Moreover, the same components as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0099] As shown in Figure 12, the support stand 30 of Example 2 comprises a support base 11 placed on the deck slab 4 and a base body 14 arranged above the support base 11 and inclined relative to the support base 11.

[0100] As shown in Figure 12, the support stand 30 of Example 2 includes a pair of hydraulic jacks 31 that support the stand main body 14, a pair of support pillars 32, and a pivot part 33 that rotatably connects the bridge part 141 of the stand main body 14 to the support pillars 32. As shown in FIG. 12, the gantry body 14 of the second embodiment is not provided with the second contact portion 144 of the first embodiment.

[0101] 12, the hydraulic jack 31 is fixed to the upper surface of the support base 11 in place of the first support column 12 of the first embodiment, and its upper end is connected to a guide rail portion 14a provided on the lower surface of the frame body 14. The guide rail portion 14a is formed in a plate shape with an elongated elliptical opening hole that is long along the longitudinal direction of the bridge portion 141.

[0102] 12, the hydraulic jack 31 is configured so that the vertical length in its most contracted state is approximately the same as that of the first support column 12 of Example 1. Furthermore, the hydraulic jack 31 is configured to be able to expand and contract in the vertical direction by, for example, a hydraulic pump provided separately from the support cradle 30, and to press the connected cradle main body 14 upward from below.

[0103] 12, the support column 32 is fixed to the upper surface of the support base 11 in place of the second support column 13 of the first embodiment. The support column 32 is formed with a length in the vertical direction that supports the gantry body 14 from below in an inclined state. 12, the pivot part 33 rotatably connects the gantry main body 14 at the upper end of the support part 32 with the front-rear direction X as the center of rotation. The pivot part 33 is configured, for example, by connecting the upper end of the support part 32 and a flange provided on the lower surface of the bridge part 141 of the gantry main body 14 with a shaft.

[0104] Next, a process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 5 configured as described above will be described. In the second embodiment, only the first supported portion 21 is attached to the upper column 1 via the attachment member 24.

[0105] First, as in Example 1, the worker uses heavy machinery such as a crane to place the first supported portion 21 of the upper column 1, which is in a laid-down position, on the first abutment portion 143 of the support stand 30, which is positioned across the lower column 2.

[0106] Then, when the upper end of the upper pillar 1 is lifted by heavy machinery, the upper pillar 1 begins to rotate counterclockwise when viewed from the front, with the upper end facing upward, around the point of contact between the first abutment portion 143 and the first supported portion 21 as the center of rotation, as shown in Figure 13(a).

[0107] When the upper end of the upper column 1 is lifted up to a state in which the longitudinal direction of the upper column 1 is inclined with respect to the width direction Y, the worker operates the hydraulic jack 31 to push the first abutment portion 143 upward via the bridge portion 141.

[0108] 13(a) and 13(b), the support cradle 30 rotates counterclockwise as viewed from the front, with the pivot 33 as the center of rotation, so that the first contact portion 143 faces upward. As a result, the upper column 1 rotates around the point of contact with the first contact portion 143 as the upper end portion is lifted, and is erected while rotating around the pivot 33.

[0109] Then, the upper column 1 is lifted up at a position slightly offset in the width direction Y from the lower column 2 until it is in an upright position with its longitudinal direction approximately vertical, and the worker then joins the lower end of the upper column 1 to the upper end of the lower column 2 in the same manner as in Example 1 to form the steel column 3.

[0110] As described above, the installation support device 5 for the upper column 1 and the installation support method for the upper column 1 in Example 2 can achieve the same effects as those in Example 1 described above, because the first abutment portion 143 and the pivot portion 33 are arranged opposite each other across the lower column 2 and are placed on the deck slab 4 adjacent to the lower column 2.

[0111] The pivot part 33 is configured to pivotally connect the bridge part 141, which extends diagonally upward from one end to which the first abutment part 143 is connected, to the support part 32, which supports the other end of the bridge part 141. Furthermore, the erection support device 5 for the upper column 1 is equipped with a hydraulic jack 31 that presses one end of the bridge part 141 upward.

[0112] According to this configuration, the hydraulic jack 31 presses one end of the bridging section 141 upward, allowing the erection support device 5 for the upper column 1 to rotate the upper column 1 around the pivot section 33.

[0113] At this time, the setup support device 5 for the upper column 1 can simultaneously rotate the upper column 1 around the point of contact with the first contact portion 143 and around the pivot portion 33. Therefore, the setup support device 5 for the upper column 1 can efficiently support the erection of the upper column 1.

[0114] Furthermore, the setup support device 5 for the upper column 1 can suppress swaying of the upper column 1 caused by rotation around the pivot part 33 because the lower end of the upper column 1 is supported by the first abutment part 143. Therefore, the setup support device 5 for the upper column 1 can support safer erection of the upper column 1. [Example]

[0115] A construction support device 5 of Example 3, which has a different support frame configuration from the construction support device 5 of Example 1 described above, will be described with reference to FIG. 14A and 14B are explanatory diagrams for explaining the outline of the support cradle 40 in the third embodiment, with FIG. 14A showing a front view of the support cradle 40 and FIG. 14B showing a plan view of the support cradle 40. As shown in FIG. Moreover, the same components as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0116] As shown in Figures 14(a) and 14(b), the support stand 40 of Example 3 comprises a support base 11 and a stand main body 14 that is arranged above the support base 11 and supported by a first support portion 12 and a second support portion 13. Furthermore, as shown in FIG. 14, the support base 40 of the third embodiment is provided with a rotation base portion 41 on the upper surface of the support base 11, which is rotatable around a rotation axis in the vertical direction.

[0117] As shown in Figures 14(a) and 14(b), this rotating base portion 41 is roughly circular in shape when viewed from above, and is composed of a lower base portion 41a that is fixed to the support base 11 and an upper base portion 41b that is fixed to the first support portion 12 and the second support portion 13, stacked in the vertical direction.

[0118] Furthermore, the rotating base 41 is configured so that the upper base 41b and the lower base 41a can rotate relative to each other around a rotation axis in the vertical direction. The rotating base 41 is equipped with an appropriate switching means for switching between a state in which the upper base 41b and the lower base 41a can rotate relative to each other and a state in which they cannot rotate relative to each other.

[0119] Next, a brief description will be given of the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 5 configured as described above. As an example, it is assumed here that the support frame 40 is placed on the deck slab 4 in a state in which the juxtaposition direction of the first contact portions 143 is not substantially parallel to the outer surface of the lower column 2.

[0120] First, as in Example 1, the worker uses heavy machinery such as a crane to place the first supported portion 21 of the upper column 1, which is in a laid-down position, on the first abutment portion 143 of the support stand 40, which is positioned across the lower column 2.

[0121] Then, when the upper end of the upper column 1 is lifted by heavy machinery, the upper column 1 rotates counterclockwise when viewed from the front around the point of contact between the first supported portion 21 and the first abutment portion 143, as in Example 1, and then rotates counterclockwise when viewed from the front around the point of contact between the second supported portion 22 and the second abutment portion 144 to be erected.

[0122] Then, when the second supported portion 22 and the second abutting portion 144 are in abutment and the longitudinal direction of the upper column 1 is in an upright position that is approximately vertical, the worker rotates the rotating base portion 41 to adjust the orientation of the upper column 1 in the rotation direction with the vertical direction as the center of rotation, and align it with the lower column 2. Thereafter, the worker joins the lower end of the upper column 1 to the upper end of the lower column 2 in the same manner as in Example 1 to form the steel column 3.

[0123] As described above, the installation support device 5 for the upper column 1 and the installation support method for the upper column 1 in Example 3 can achieve the same effect as in Example 1 described above, because the first abutment portion 143 and the second abutment portion 144 are arranged opposite each other across the lower column 2 and are placed on the deck slab 4 adjacent to the lower column 2.

[0124] Furthermore, since it is equipped with a rotating base portion 41 that rotates the first abutment portion 143 and the second abutment portion 144 together in the horizontal direction around the lower column 2, the installation support device 5 for the upper column 1 can rotate the upright upper column 1 directly above the lower column 2, with the vertical direction as the center of rotation.

[0125] Therefore, the setup support device 5 for the upper column 1 can easily align the orientation of the upper column 1 in the rotation direction around the vertical direction as the center of rotation with the lower column 2. At this time, because the first abutment part 143 or the pivot part supports the upper column 1, the setup support device 5 for the upper column 1 can suppress swaying of the upper column 1 due to rotation around the vertical direction as the center of rotation.

[0126] In addition, the setup support device 5 for the upper column 1 can rotate the upper column 1 in a narrower space than when the upper column 1 is rotated in a laid-down state around the vertical direction as the center of rotation. Therefore, the setup support device 5 for the upper column 1 can further facilitate erecting the upper column 1 above the lower column 2. [Example]

[0127] 15 and 16, a description will be given of a construction support device 5 of a fourth embodiment, which is different from the construction support device 5 of the first embodiment described above and which makes it easier to install a support frame on the deck slab 4 and remove the support frame from the deck slab 4. 15A and 15B are explanatory diagrams for explaining the outline of the support cradle 50 in the fourth embodiment, with FIG. 15A showing a front view of the support cradle 50 and FIG. 15B showing a plan view of the support cradle 50. In FIG. Furthermore, FIG. 16 shows an explanatory diagram for explaining the operation of the support frame 50 in the fourth embodiment.

[0128] Moreover, the same components as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted. In the following description, the direction toward the right in FIG. 15(a) is one side of the width direction Y, and the direction toward the left in FIG. 15(a) is the other side of the width direction Y.

[0129] First, as shown in FIG. 15, two lower erection pieces 1a are joined to each outer surface of the lower end of the upper pillar 1 of Example 4. Similarly, as shown in FIG. 15, two upper erection pieces 2a are joined to each outer surface of the lower end of the lower pillar 2 of Example 4.

[0130] In addition, the construction support device 5 in Example 4 includes a first supported part 21 and a second supported part 22 attached to the upper column 1, and a support stand 50 placed on the deck slab 4 across the lower column 2. The first supported portion 21 and the second supported portion 22 are round rods extending in the front-rear direction X, as in the first embodiment, and are fixed to the lower erection piece 1a via mounting members 27.

[0131] As shown in Figures 15 and 16, the support frame 50 is configured in a grid shape in plan view by combining multiple H-shaped steel beams extending in a predetermined direction, and at least one side in the width direction Y can be opened and closed by rotating the H-shaped steel beams extending in the front-to-rear direction X.

[0132] As shown in Figures 15(a) and 15(b), this support frame 50 comprises a pair of lower girder sections 51, a pair of middle girder sections 52, and a pair of upper girder sections 53 extending in the width direction Y at a predetermined interval in the front-to-back direction X, and a pair of lower beam sections 54 and a pair of upper beam sections 55 extending in the front-to-back direction X at a predetermined interval in the width direction Y.

[0133] Furthermore, as shown in Figures 15(a) and 15(b), the support frame 50 has a plurality of connecting plate portions 56 that connect the lower girder portion 51 and the middle girder portion 52 in the vertical direction, and a plurality of first abutment portions 143 and second abutment portions 144 that are erected on the upper surface of the upper beam portion 55. Specifically, as shown in Figure 15(a), a pair of lower girder sections 51 are arranged so that their longitudinal direction is the width direction Y, and wheel mechanism sections 113 are fixed to the undersides at both ends in the width direction Y.

[0134] 15(a), the pair of middle beams 52 are positioned above the lower beams 51 at a predetermined distance, with their longitudinal direction aligned with the width direction Y. The middle beams 52 are formed so that their longitudinal length is slightly shorter than that of the lower beams 51.

[0135] Furthermore, as shown in Figure 15(b), a flat plate (number omitted) protruding in the front-to-rear direction X is joined to one end of the upper flange of the middle girder portion 52 in the width direction Y. Of the flat plates of this middle girder portion 52, the flat plate protruding in a direction away from the other middle girder portion 52 has two through holes 52a (see Figures 15 and 16) opened and formed at a predetermined interval in the width direction Y.

[0136] On the other hand, among the flat plates of the middle girder portion 52, the flat plate that protrudes toward the other middle girder portion 52 has an approximately oblong slide hole 52b extending in the width direction Y in approximately the same range in the width direction Y as the two through holes 52a, as shown in Figure 15(b).

[0137] 15(a), the pair of upper girder portions 53 are arranged on the upper surface of the middle girder portion 52 on the other side in the width direction Y, with their longitudinal direction being the width direction Y. The upper girder portions 53 are formed with a length in the width direction Y that extends from a position on the other side in the width direction Y of the lower pillars 2 to the edge of the middle girder portions 52.

[0138] Furthermore, as shown in Figure 15(b), a flat plate (reference numeral omitted) protruding in the front-to-rear direction X is joined to the upper flange of the upper girder portion 53. Of the flat plates of this upper girder portion 53, the flat plate protruding in a direction away from the other upper girder portion 53 has two through holes 53a opened and formed therein, spaced a predetermined distance apart in the width direction Y.

[0139] On the other hand, among the flat plates of the upper girder portion 53, the flat plate that protrudes toward the other upper girder portion 53 has an approximately oblong slide hole 53b that extends in the width direction Y in approximately the same range in the width direction Y as the two through holes, as shown in Figure 15(b).

[0140] 15(a) and 15(b), the pair of lower beam portions 54 are arranged between the upper surface of the lower girder portion 51 and the lower surface of the middle girder portion 52 so that their longitudinal direction is in the front-to-rear direction X. The pair of lower beam portions 54 are arranged at the ends of the middle girder portion 52 in the width direction Y. As shown in FIG. 15(b), this lower beam portion 54 is fastened to the upper flange of the lower girder portion 51 and the lower flange of the middle girder portion 52 using four bolts 57, respectively.

[0141] Furthermore, as shown in Figures 15(a) and 15(b), one upper beam section 55 is placed on the upper surface of the middle girder section 52 and the other upper beam section 55 is placed on the upper surface of the upper girder section 53 so that the longitudinal direction of the upper beam section 55 is the fore-and-aft direction X.

[0142] As shown in Figure 15(b), flat mounting plates (reference numerals omitted) are joined to the underside of both ends in the front-to-rear direction X of this upper beam portion 55, contacting the upper surfaces of the middle girder portion 52 and the upper girder portion 53. Note that insertion holes (reference numerals omitted) through which bolts 58 are inserted are formed at the ends of the mounting plate in the width direction Y at predetermined intervals in the front-to-rear direction X.

[0143] Of this upper beam portion 55, the upper beam portion 55 placed on the middle girder portion 52 has an attachment plate fastened to the other end of the through hole 52a and slide hole 52b located on the other side in the width direction Y using a bolt 58, as shown in Figure 15(b).

[0144] On the other hand, as shown in Figure 15(b), the upper beam portion 55 placed on the upper girder portion 53 has an attachment plate fastened to one end of the through hole 53a and slide hole 53b located on one side in the width direction Y using a bolt 58. In addition, as shown in Figure 15(a), the multiple connecting plate portions 56 connect the upper surface of the lower girder portion 51 and the lower surface of the middle girder portion 52 in the vertical direction, on the inner side in the width direction Y (towards the lower column 2) of the lower beam portion 54.

[0145] As shown in FIG. 15, a plurality of first contact portions 143 are erected along the front-rear direction X on the upper surface of the upper beam portion 55 placed on the middle girder portion 52. On the other hand, as shown in FIG. 15, a plurality of second contact portions 144 are erected along the front-rear direction X on the upper surface of the upper beam portion 55 placed on the upper girder portion 53.

[0146] In the construction support device 5 of Example 4 equipped with such a support stand 50, the support stand 50 is placed on the deck slab 4, straddling the lower column 2, as in Example 1, and supports the erection of the upper column 1 in a reclined state through the same process as in Example 1.

[0147] Furthermore, the construction support device 5 of Example 4 allows the support frame 50 to be installed on the deck slab 4 and removed from the deck slab 4 by moving the support frame 50 while traveling in the width direction Y on the deck slab 4. At this time, the worker rotates the lower beam portion 54 and the upper beam portion 55 on one side in the width direction Y, thereby enabling the support frame 50 placed across the lower columns 2 to be moved.

[0148] More specifically, the worker first places the lower beam portion 54, which is arranged on one side in the width direction Y, in a rotatable state as shown in Fig. 16. Specifically, the worker removes all of the bolts 57 that secure the lower beam portion 54 on one side in the front-rear direction X (the lower side in Fig. 16).

[0149] Furthermore, as shown in FIG. 16, the worker loosens the bolt 57 that is located furthest outward in the width direction Y and furthest on the other side in the front-to-rear direction X of the lower beam portion 54, among the bolts 57 that secure the other side in the front-to-rear direction X (the upper side in FIG. 16), and removes the other bolts 57.

[0150] Next, as shown in Fig. 16, the worker places the upper beam portion 55, which is placed on one side in the width direction Y, i.e., on the upper surface of the middle girder portion 52, in a rotatable state. Specifically, of the bolts 58 that secure the upper beam portion 55, the worker removes the bolt 58 fastened to the through hole 52a and loosens the bolt 58 fastened to the slide hole 52b.

[0151] Thereafter, the worker moves the upper beam portion 55 to one side in the width direction Y along the slide hole 52b, as shown in FIG. At this time, the worker slides the upper beam portion 55 so that the insertion hole provided in the mounting plate is aligned with the through hole 52a located furthest to one side in the width direction Y out of the two through holes 52a.

[0152] 16, the worker connects the mounting plate of the upper beam portion 55 located on one side in the front-rear direction X to the through-hole 52a located on the furthest side in the width direction Y using bolts 58, and then removes all of the bolts 58 inserted into the slide holes 52b. At this time, the worker installs the bolts 58 in the through-holes 52a in a loosened state.

[0153] Then, as shown in Figure 16, the worker rotates the lower beam portion 54 toward one side in the width direction Y around the bolt 57, and rotates the upper beam portion 55 toward one side in the width direction Y around the bolt 58, thereby opening one side of the support frame 50 in the width direction Y. After opening one side of the support frame 50 in the width direction Y, the worker moves the support frame 50 placed on the deck slab 4 in the width direction Y.

[0154] In this way, the erection support device 5 of Example 4 makes it possible to erect the upper column 1, which is lying down above the lower column 2, thereby assisting in the erection of the upper column 1 and facilitating the installation of the support frame 50 on the deck slab 4 and the removal of the support frame 50 from the deck slab 4.

[0155] As described above, the installation support device 5 for the upper column 1 and the installation support method for the upper column 1 in Example 4 can achieve the same effect as in Example 1 described above, since the first abutment portion 143 and the second abutment portion 144 are arranged opposite each other across the lower column 2 and are placed on the deck slab 4 adjacent to the lower column 2.

[0156] Furthermore, since the support frame 50 can move in the width direction Y on the deck slab 4, the installation support device 5 for the upper column 1 makes it easier to install the support frame 50 on the deck slab 4 and remove the support frame 50 from the deck slab 4 compared to support frames that are installed and removed using a chain block or the like.

[0157] In addition, for example, when the upper column 1 and the lower column 2 are connected by a damper as in Example 1, the setup support device 5 for the upper column 1 can remove the support frame 50 while the upper column 1 and the lower column 2 are connected by the damper. Therefore, when the setup support device 5 for the upper column 1 brings the lifted upper column 1 into contact with the lower column 2, the damper can more reliably prevent the upper column 1 from colliding with the lower column 2 with force.

[0158] In correspondence between the configuration of this invention and the above-mentioned embodiment, The supported portion of the present invention corresponds to the first supported portion 21 of the embodiment, Similarly, The contact portion corresponds to the first contact portion 143, The pivot portion corresponds to the second abutment portion 144 and the pivot portion 33, The floor corresponds to slab 4, The pressing mechanism corresponds to the hydraulic jack 31. The rotation mechanism corresponds to the rotation base 41, The damping mechanism corresponds to the damper 23. The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0159] For example, in the above-described first to fourth embodiments, the upper column 1 and the lower column 2 are cylindrical steel frames, but they are not limited to this and may be H-shaped steel frames or the like. Furthermore, in the above-described first to fourth embodiments, the lower columns 2 penetrate the deck slab 4, but this is not limitative, and the bases of steel columns provided in the foundation may also be used as the lower columns.

[0160] Furthermore, in Examples 1 to 4, the support cradles 10, 30, 40, and 50 are not limited to the above-described configurations. For example, the support cradle may be rotatably supported by the first contact portion 143 around the front-rear direction X as the center of rotation, and may include a hook member that engages from above with the first supported portion 21 of the upper column 1 placed on the first contact portion 143. The hook member has a tip formed in a generally claw-like shape, for example, and is formed so as to come into contact with the circumferential surface of the first supported portion 21 in the width direction Y.

[0161] The hook member is engaged with the first supported portion 21 by being rotated manually by an operator or by being rotated by an actuator operated by an operator. When the second supported portion 22 of the upper column 1 is placed on the second abutment portion 144 of the support frame, the hook member is released from its engagement with the first supported portion 21 by an operator or an actuator, etc.

[0162] According to this configuration, the construction support device 5 can use the hook member to restrict movement of the first supported part 21 placed on the first abutment part 143 in the width direction Y. As a result, when erecting the upper column 1 in a reclined state, the construction support device 5 can prevent the upper column 1 from coming off the support frame, thereby supporting safer erection of the upper column 1.

[0163] In addition, in the above-described Example 1, the first supported portion 21 and the second supported portion 22 are fixed to the lower erection piece 1a of the upper column 1 via the mounting member 24, but this is not limited to this, and the first supported portion 21 and the second supported portion 22 may be inserted into a through hole provided in the lower erection piece 1a.

[0164] Furthermore, in Example 1, the first supported portion 21 and the second supported portion 22 are made of steel round bars, but this is not limited to this, and the first supported portion and the second supported portion may be of any suitable shape as long as they are shaped to be supported by abutting against the first abutment portion 143 and the second abutment portion 144 of the support frame 10. Alternatively, the first and second supported portions may be appropriate portions of the upper pillar 1. In this case, the first and second abutting portions are formed in appropriate shapes that can support appropriate portions of the upper pillar 1 by abutting against them.

[0165] Furthermore, in the first embodiment, the lower end of the damper 23 is connected to the lower pillar 2, but this is not limitative, and the lower end of the damper 23 may be connected to the support frame 10. Furthermore, the damper 23 is provided as a means for reducing the descent speed of the upper column 1, but the present invention is not limited to this and any appropriate means may be used as long as it can reduce the descent speed of the upper column 1. The damper 23 may also be provided in Examples 2, 3, and 4.

[0166] In addition, in Example 2, the support base 30 does not have a second abutment portion, but this is not limitative and a second abutment portion may be provided as in Example 1. In this case, a second supported portion 22 is attached to the upper column 1.

[0167] In addition, in Example 3, the upright upper column 1 is rotated around the vertical direction by the rotating base portion 41, but this is not limited to this, and the upper column 1 may be rotated around the point of contact with the first abutment portion 143 or the second abutment portion 144 while being rotated around the vertical direction by the rotating base portion 41. Even in this case, the same effects as those of the third embodiment can be achieved.

[0168] Furthermore, in Example 4, the support frame 50 has a rotatable lower beam portion 54 and upper beam portion 55, but this is not limited to this, and any suitable configuration may be used as long as the support frame can be installed and removed by running on the deck slab 4. For example, the support cradle may be configured in a generally U-shape in plan view with one side open in the width direction Y, or may be a support cradle to which members extending in the front-rear direction X (one beam portion 112, connecting rod 114, and connecting portion 142 in Example 1, and lower beam portion 54 and upper beam portion 55 in Example 4) are detachable. Alternatively, the support cradle may be separable approximately at the center in the width direction Y.

[0169] Furthermore, in Example 4, the worker rotated the lower beam portion 54 and the upper beam portion 55 on one side in the width direction Y, but this is not limited to this, and the worker may rotate the lower beam portion 54 and the upper beam portion 55 on the other side in the width direction Y. [Explanation of symbols]

[0170] 1...Upper pillar 2…Lower pillar 4…Floor slab 5...Installation support device 21...First supported part 22…Second supported part 23...Damper 31...Hydraulic jack 32...Strut part 33...Pivot 41...Rotating base 141...Bridge part 143...First contact part 144...Second contact part

Claims

1. An upper column erection support device that supports the erection of an upper column that is carried in lying down so that the longitudinal direction is approximately horizontal, a contact portion that supports a supported portion provided below the lower end of the upper column when the upper column is laid down by contact; a pivot portion that is provided at a position diagonally above the abutment portion and that pivots the upper column, the upper end portion of which is opposite to the lower end portion and is lifted up; The abutment portion and the pivot portion are The device is arranged across the lower pillar and placed on the floor surface adjacent to the lower pillar. A support device for erecting upper columns.

2. The supported portion of the upper pillar is a first supported portion, and the abutting portion is a first abutting portion, The pivot portion is a second abutment portion that supports a second supported portion provided at the lower end of the upper column by abutting against the first supported portion; The upper column installation support device according to claim 1.

3. The first contact portion and the second contact portion are connected across the lower pillar. The upper column installation support device according to claim 2.

4. The pivot portion is a bridge portion extending obliquely upward from one end connected to the abutment portion, and a support portion supporting the other end of the bridge portion, the bridge portion being pivotally connected to the support portion; A pressing mechanism is provided to press one end of the bridge upward. The upper column installation support device according to claim 1.

5. a rotation mechanism that rotates the contact portion and the pivot portion together in the horizontal direction around the lower pillar; An upper column installation support device according to any one of claims 1 to 4.

6. A damping mechanism is provided to reduce the descending speed of the upper column. An upper column installation support device according to any one of claims 1 to 5.

7. A method for supporting the erection of an upper column that supports the erection of an upper column that has been brought in lying down so that its longitudinal direction is approximately horizontal, comprising: a step of abutting a supported portion provided on the lower side of the lower end of the upper column in a laid state against an abutting portion placed on a floor surface adjacent to the lower column; a step of lifting the upper end of the upper pillar, the lower end of which is supported by the abutment portion, and starting to rotate the upper pillar around the abutment point with the abutment portion; and rotating the upper column, the upper end of which is lifted, around a pivot part that is provided at a position diagonally above the abutment part across the lower column and placed on a floor surface adjacent to the lower column. A method for supporting the erection of the upper pillars.

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