JP2012202068A - Column fixing method, column used in the method and hopper for concrete placing used in the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column fixing method or the like capable of securing a free-standing property of a column and reducing work steps.SOLUTION: The column fixing method of this invention comprises: an excavation part forming step of forming an excavation part 6 by excavating a column fixation object part (debris flow deposition part 5); an installation surface forming step of forming an installation surface 9 by placing concrete 8 having a self leveling property to a bottom surface of the excavation part; a pipe material installing step of installing one end side of a pipe material 10 to the installation surface; a pipe material fixing step of fixing the pipe material 10 to the ground by placing the concrete 12 around the pipe material installed to the installation surface; a column installing step of installing the column by inserting one end side of a column 1 into a pipe of the pipe material through the other end opening of the pipe material 10; and a column fixing step of fixing the column to the pipe by placing concrete 15 inside the pipe of the pipe material.

Description

  The present invention relates to a column fixing method and the like for fixing a column to a root cutting part.

  Conventionally, in a column fixing method in which columns are placed on abandoned concrete formed by placing concrete on the root cutting part, a plurality of columns are discarded by connecting the columns adjacent to each other with a connecting member. After placing the column upright on the concrete by connecting the base mesh provided on the discarded concrete and the lower end of the column with a mounting bracket, the concrete is placed around the column. There is a known method of discarding the support and fixing it on the concrete.

Japanese Patent Laid-Open No. 11-131498

In the conventional column fixing method, since it is difficult to secure the column self-supporting property, the column is made to stand by itself using a self-supporting auxiliary tool such as a connecting member, a base mesh, and a mounting bracket.
However, in the conventional support | pillar fixing method, the operation | work process for assisting the independence of a support | pillar using an independent support tool is needed.
The present invention provides a column fixing method and the like that can ensure the independence of the column and reduce the work process.

The strut fixing method according to the present invention includes a root cutting part forming step of rooting a pillar fixing target part to form a root cutting part, and placing concrete having self-leveling on the bottom surface of the root cutting part. An installation surface forming process for forming a surface, a pipe material installation process for installing one end of the pipe material on the installation surface, and a pipe material fixing process for placing the concrete around the pipe material installed on the installation surface and fixing the pipe material to the ground And a column installation step in which one column side of the column is inserted into the tube of the tube through the other end opening of the tube and the column is installed, and a column fixing step in which concrete is placed in the tube of the tube and the column is fixed to the tube. Since the self-supporting property of the pipe material installed on the installation surface is secured, and the support material is inserted into the pipe of the pipe material fixed to the installation surface, so that the self-supporting property of the support material is secured. Prop fixing work can be done quickly and easily Since the kill, it is possible to reduce the work cost and work time.
In addition, the column fixing method according to the present invention includes a root cutting part forming step of rooting a column fixing target part to form a root cutting part, and placing concrete having self-leveling properties on the bottom surface of the root cutting part. The installation surface forming step for forming the installation surface and a plurality of such that the central axis of each column body is maintained parallel to each other and one end surface of each column body is positioned on the same plane orthogonal to the central axis of the column body A column installation step of installing one end surface of each column body of the column on the installation surface using a column configured by connecting the column bodies of the column, and one end surface side of each column body of the column installed on the installation surface Since it is equipped with a strut fixing process in which concrete is placed around and the strut is fixed to the ground, the independence of the strut is improved and the strut fixing work can be performed quickly and easily. Can be reduced.
Furthermore, the column fixing method according to the present invention includes a root cutting portion forming step of rooting a column fixing target portion to form a root cutting portion, the central axes of each column body being maintained parallel to each other, and each column body being A column installation in which one end surface of each column body of the column is installed on the bottom surface of the root cutting portion using a column configured by connecting a plurality of column bodies so as to be movable in the direction along the central axis of the column body It is equipped with a process and a column fixing process in which concrete is placed around one end face side of each column body of the column installed on the bottom of the root cutting part and the column is fixed to the bottom of the root cutting part. The surface forming step can be omitted, the support of the column can be improved, and the column fixing operation can be performed quickly and easily, so that the operation cost and the operation time can be reduced.
Since the part to be fixed is a disaster area where people cannot enter and the work of each process is performed using a machine operated by remote control, it is easy to place the support in places where people do not enter such as disaster areas It can be installed.
Columns used in the column fixing method described above, extending in the same direction, and arranged at the vertex positions of squares having three or more corners in plan view, and a plurality of column bodies parallel to each other, and a plurality of columns Since the column body is provided with a connecting member that connects a plurality of column bodies so that each column body can be moved in a direction along the central axis of the column body, the independence of the columns is improved, and the work cost and work time are improved. Can be reduced.
A column used in the column fixing method described above, and a central main column and a rectangular apex extending in the same direction as the central main column and having three or more corners surrounding the central main column in plan view A plurality of sub-columns arranged in parallel at each position and a plurality of sub-columns and the respective sub-columns and the central main column so that the plurality of sub-columns can be individually moved in the direction along the central axis of the central main column Since the connecting member for individually connecting the peripheral surface of the body is provided, the independence of the support column is improved, and the work cost and the work time can be reduced.
A concrete hopper for use in the above-described support fixing method, which includes a container in which concrete is accommodated and having a discharge port for discharging the concrete to the bottom plate, and a diameter larger than the diameter of the discharge port disposed inside the container. An opening / closing valve that is formed by a valve body having a diameter and that opens and closes the discharge port, and a pressure receiving portion that is connected to the opening / closing valve via a connecting shaft having a diameter smaller than the diameter of the discharge port and protrudes to the outside of the container through the discharge port. The pressure receiving part receives the force from the concrete placement target surface and moves the on-off valve in the direction to open the discharge port, so that the pressure receiving part and the bottom plate are not in contact with each other, and the inside of the on-off valve and the bottom plate When the bottom surface is kept out of contact with the concrete, the concrete in the container is placed between the on-off valve and the bottom surface of the bottom plate, between the connecting shaft and the hole edge of the discharge port, and between the pressure receiving portion and the bottom surface of the bottom plate. To the concrete placement target surface Since configured to be issued, the opening and closing drive means for opening and closing the opening and closing plate for opening and closing the discharge port can be eliminated, can provide an inexpensive hopper.
The opening / closing valve includes an opening / closing lid that opens and closes the discharge port, and an opening operation assisting means that reduces the force from the concrete in the container that is applied to the opening / closing lid when the opening / closing lid is opened. Since it is formed of a cube having an inclined portion extending from the periphery of the opening / closing lid toward the center side of the opening / closing lid in a direction away from the bottom plate of the container, a hopper that can be smoothly opened by the opening / closing valve can be provided.

Sectional drawing which shows the state which installed the support | pillar in the debris flow accumulation part as a support | pillar fixed object part (Embodiment 1). The perspective view which shows the state which installed the support | pillar in the debris flow accumulation part as a support | pillar fixed object part (Embodiment 1). Explanatory drawing which showed the procedure of the support | pillar fixing method (Embodiment 1). The perspective view which shows the protection fence which installed the wall board between support | pillars (Embodiment 2). The perspective view which shows the protection fence which installed the wall board between support | pillars (Embodiment 2). Explanatory drawing which showed the procedure of the support | pillar fixing method (embodiment 3). The perspective view which shows a tubular body (Embodiment 4). (A) is a perspective view which shows a support | pillar, (b) is a front view which shows a support | pillar (Embodiment 5). (A) is a perspective view which shows a support | pillar, (b) is a front view which shows a support | pillar (Embodiment 6). The perspective view which shows the state which installed the support | pillar in the installation surface (Embodiment 6). The perspective view which shows a support | pillar (Embodiment 7). The disassembled perspective view which shows a support | pillar (Embodiment 7). Explanatory drawing which showed the process of the support | pillar fixing method (Embodiment 7). The perspective view which shows a support | pillar (Embodiment 8). The disassembled perspective view which shows a support | pillar (Embodiment 8). Explanatory drawing which showed the procedure of the support | pillar fixing method (Embodiment 8). The perspective view which shows a hopper (Embodiment 9). The fracture | rupture perspective view which shows the opening / closing operation | movement of a hopper (Embodiment 9). Explanatory drawing which showed the concrete placement process by a hopper (Embodiment 9). A fracture perspective view showing a hopper (Embodiment 10). Sectional drawing which shows opening / closing operation | movement of a hopper (Embodiment 10).

Embodiment 1
With reference to FIG. 1 to FIG. 3, with respect to the support fixing method according to the first embodiment, a protective fence 20 is formed to prevent the spread of a disaster in a place where a person cannot enter such as a disaster area such as a debris flow or a heavy rain. The fixing method of the support column 1 will be described as an example.
The column fixing target portion on which the column 1 is installed is, for example, a debris flow accumulation portion 5 in which a debris flow is accumulated at the ridge portion 4 of the slope 3 of the mountain 2 where a part of the slope 3 is collapsed.
The strut fixing method includes a root cutting portion forming step of rooting the debris flow accumulation portion 5 as a column fixing target portion to form a root cutting portion 6, and a concrete 8 having self-leveling property on the bottom surface 7 of the root cutting portion 6. An installation surface forming step for forming a horizontal installation surface 9 by placing the tube, a pipe material installation step for installing one end 11 side of the tube material 10 such as a steel pipe on the installation surface 9, and a tube material 10 installed on the installation surface 9. A pipe fixing process in which concrete 12 is placed around and the pipe 10 is fixed to the ground, and one end 14 side of the column 1 such as H-shaped steel is inserted into the pipe of the pipe 10 through the other end opening 13 of the pipe 10. A support column installation step of installing the support column 1 and a column fixing step of fixing the support column 1 to the tube material 10 by placing concrete 15 in the pipe of the tube material 10 inserted and installed.

Hereinafter, a specific example of the column fixing method will be described. Since the column fixing target part is the debris flow accumulation portion 5 and is a place where people cannot enter, the work of each process described above is performed by unmanned work using a machine operated by remote control.
The machine is, for example, a construction machine such as a backhoe or a carrier dumper having a function as an excavating machine, a transport vehicle, a lifting machine, and a hopper having a function of discharging the concrete from a state in which the concrete is accommodated to a concrete placing part A concrete placement machine such as a wireless receiver 16 that receives a command transmitted by radio from a remote controller (not shown), and controls the operation of the machine based on the command received by the wireless receiver 16 (not shown). A device provided with a control unit is used (see FIGS. 3A and 3B).

First, for example, the backhoe 17 as a construction machine is transported to the vicinity of the debris flow accumulation portion 5 that is a column fixing target portion, and the operator remotely controls the backhoe 17 so that the backhoe 17 is moved to the debris flow accumulation portion 5 of the column fixing target portion. After the movement, the debris flow accumulation portion 5 is excavated on the backhoe 17 to perform the root cutting operation to form the root cutting portion 6 (the root cutting step (see FIGS. 3A and 3B)).
For example, an opening / closing drive means such as an air cylinder (not shown) as a concrete placement machine operated by remote control is provided, and the opening / closing provided at the bottom of the concrete accommodating portion 19a by operating the opening / closing drive means. A hopper 19 configured to open and close the plate 18 is used, and concrete (raw concrete) 8 having excellent self-leveling property is accommodated in the concrete accommodating portion 19a of the hopper 19, and the concrete 8 is accommodated in the concrete accommodating portion 19a. The accommodated hopper 19 is attached to the backhoe 17, and the backhoe 17 is remotely controlled to transport the hopper 19 to the position of the root cutting portion 6 (see FIG. 3B).
Then, the opening / closing driving means of the hopper 19 is driven by remote control to change the opening / closing plate 18 of the hopper 19 from the closed state to the open state, so that the concrete 8 falls from the hopper 19 to the bottom surface 7 of the root cutting portion 6. The horizontal installation surface 9 is formed by the self-leveling property of the concrete 8 that has been cast and placed on the bottom surface 7 of the root cutting part 6 (see installation surface formation step (see FIGS. 3B and 3C)). .
Next, the backhoe 17 is remotely controlled to transport the tube material 10 to the installation surface 9, and one end 11 of the tube material 10 is installed on the installation surface 9. At this time, the plurality of pipe materials 10 are installed at predetermined intervals along the extending direction of the installation surface 9 (pipe material installation process (see FIGS. 3C and 3D, FIG. 2)).
After installing a plurality of pipes 10 on the installation surface 9, using a hopper 19 in the same manner as described above, by placing and hardening concrete (green concrete) 12 around the pipes 10 installed on the installation surface 9, The pipe material 10 is fixed to the ground (pipe material fixing step (see FIGS. 3D and 3E)).
The backhoe 17 is remotely controlled to transport the support column 1 to the position of the tube material 10, and the one end 14 side of the support column 1 is inserted into the tube material 10 through the other end opening 13 of the tube material 10 to install the one end 14 of the support column 1. By making contact with the surface 9, the support column 1 is installed in the tube of the tube material 10 (see a column installation process (see FIGS. 3E and 3F)).
Then, by using the hopper 19 in the same manner as described above, concrete (green concrete) 15 is placed and hardened in the pipe material 10 through the other end opening 13 of the pipe material 10, thereby fixing the column 1 to the pipe material 10 ( Supporting column fixing step (see FIG. 3 (g); (h)). It should be noted that when placing concrete in the pipe 10 having a small opening or in the root cutting portion 6, a concrete discharge guide member such as a chute having a small concrete discharge port may be used.
As described above, the protective fence 20 is formed in which the plurality of columns 1 are installed so as to be adjacent to the debris flow accumulation portion 5 as the column fixing target part at a predetermined interval.
As a machine, a helicopter may be used instead of a construction machine.

According to the column fixing method according to the first embodiment, since the concrete 8 having self-leveling property is placed on the bottom surface 7 of the root cutting portion 6 to form the horizontal installation surface 9, it is installed on the installation surface 9. The self-supporting property of the column 10 is ensured, and further, the support column 1 is inserted into the tube of the tube material 10 fixed to the installation surface 9, thereby ensuring the self-supporting property of the column 1.
Therefore, according to the first embodiment, it is possible to reduce the work process using the self-supporting assisting tool for assisting the independence of the support column as in the past, and to perform the support fixing operation quickly and easily. Work time can be reduced.
In addition, since the self-supporting property of the pipe 10 and the support column 1 is ensured, it is possible to perform unmanned work by remotely manipulating the machine, and also when the support column 1 is installed in a place where a person cannot enter such as a disaster area. It becomes possible to respond easily.

As shown in FIG. 1 to FIG. 3, the pipe 10 has a comparison in which the other end (upper end) is positioned higher than the upper end position of the root cutting portion 6 when the one end 11 is installed on the installation surface 9. A pipe 10 having a long target length may be used, and when one end 11 is installed on the installation surface 9, the other end is positioned at a position lower than the upper end position of the root cutting part 6. The tube material 10 may be used.
When the long pipe material 10 described above is used, the length of one end portion of the column fixed to the tube material 10 can be increased, so that the rigidity of the column is increased.
When the above-described short pipe material 10 is used, if the concrete is continuously placed around the pipe material 10 of the root cutting portion 6, the position of the upper end (the other end) of the pipe material 10 on which the placed concrete is installed on the installation surface 9. Since it enters into the pipe of the pipe material 10 after reaching the position, it is not necessary to perform the operation of placing concrete in the pipe material 10 aiming at the other end opening 13 of the pipe material 10, and the concrete is placed in the pipe of the pipe material 10. Work can be done easily. In the case of an unmanned operation, the operation of placing concrete in the tube material 10 aiming at the other end opening 13 of the tube material 10 is difficult, and therefore it is meaningful that the operation can be omitted. Moreover, since the other end (upper end) of the pipe material 10 installed on the installation surface 9 is located at a position lower than the upper end position of the root cutting part 6, as will be described in the second embodiment, the columns 1 adjacent to each other; By using the H-shaped steel as 1 and inserting the opposite end portions 32; 32 of the wall plate 30 into the concave portions 31; 31 of the H-shaped steel facing each other, the wall plate 30 is placed between the columns 1; 1 adjacent to each other. When forming the installed guard fence 21, the lower end of the wall plate 30 enters the root cutting part 6, and a gap is formed between the lower end of the wall plate 30 and the surface 5a of the debris flow accumulation portion 5 (see FIG. 2). It is preferable because it disappears.

Embodiment 2
A protective fence 21 having a structure in which a wall plate 30 as shown in FIG. 4 is provided between the columns 1 and 1 that are installed adjacent to each other according to the first embodiment is formed.
For example, as shown in FIG. 4, by inserting the both side end portions 32; 32 of the wall plate 30 into the respective recessed portions 31; 31 of the H-shaped steel as the support columns 1; A guard fence 21 in which a wall plate 30 is detachably installed between the columns 1; 1 can be formed. In this case, since the wall board 30 is detachable, the installation work and removal work of the wall board 30 become easy.
Further, as shown in FIG. 5, the wall plate 30X is provided between the column body 1a and the column body 1a adjacent to each other using the column 1X having the wall plate 30X at the other end of the column body 1a. A protective fence 22 may be formed. In this case, as shown in FIG. 5A, the side wall 32X of the adjacent wall plates 30X; the side end portions 32; 32 of the 30X may be configured as a protective fence 22 that does not overlap each other, or as shown in FIG. Adjacent wall plates 30 </ b>X; 30 </ b> X side end portions 32; If comprised like FIG.5 (b), the rigidity of the guard fence 22 can be raised.

Embodiment 3
As shown in FIGS. 6A to 6C, the root cut portion forming step and the installation surface forming step are performed as in the first embodiment. And after installing the pipe material 10 in the installation surface 9 (refer FIG.6 (c); (d)), before fixing the pipe material 10 to the ground, a support | pillar installation process (refer FIG.6 (d); (e)). After the strut installation step, a pipe fixing process for placing concrete 125 around the pipe material 10 and a strut fixing process for placing concrete 125 in the pipe of the pipe material 10 may be performed together (( FIG. 6 (e); see (f)).
In this case, as the pipe material 10, a pipe material having such a length that the other end (upper end) is positioned lower than the upper end position of the root cutting portion 6 when the one end 11 is installed on the installation surface 9 is used. Thus, the concrete 125 placed around the pipe material 10 enters the pipe of the pipe material 10 after reaching the upper end position of the pipe material 10 installed on the installation surface 9, so that the concrete placing operation in the pipe material fixing process and the column fixing process are performed. It is possible to perform the concrete placing work continuously, and the work can be simplified.
According to the method, the concrete placing operation in the pipe material fixing step and the concrete placing operation in the column fixing step can be performed together, so that the column fixing operation can be performed more quickly and easily. Further, as described above, when forming the protective fence 21 in which the wall plate 30 is installed between the columns 1; 1 adjacent to each other, the lower end of the wall plate 30 enters the root cutting portion 6, This is preferable because there is no gap between the lower end and the surface of the debris flow deposition portion 5.

Embodiment 4
As shown in FIG. 7, a tubular material 10 </ b> A composed of a tubular body 10 a having the same configuration as the tubular material 10 described above and a flat plate 10 b attached to one end surface of the tubular body 10 a may be used.
In the pipe material 10A, one plane of the flat plate 10b and one end 11 of the pipe body 10a are connected by a connection means such as welding or a bolt and nut so that the plane of the flat plate 10b becomes a plane orthogonal to the central axis of the pipe body 10a. Configured.
Since the pipe 10A is installed on the installation surface 9 by bringing the other surface of the flat plate 10b into contact with the installation surface 9 using the tube 10A, the installation surface 9 can be increased with respect to the installation surface 9. Since the self-supporting property of the pipe member 10A installed in the pipe is improved and the pipe member 10A can be installed more quickly and easily, the column fixing work can be performed more quickly and easily. Become.
Further, if the pipe material 10A is used, the self-supporting property of the pipe material 10A installed on the installation surface 9 is improved. Therefore, as in the third embodiment, the concrete placing operation in the pipe material fixing step and the concrete placement in the column fixing step are performed. When the work is performed together, the tube material 10A and the support column 1 are unlikely to fall down, and the support fixing operation of the third embodiment can be performed efficiently, which is effective.

Embodiment 5
As shown in FIG. 8 (a), a central main column 1x and a rectangular apex extending in the same direction as the central main column 1x and having three or more corners surrounding the central main column 1x in plan view A plurality of sub-columns 1y; 1y; 1y arranged in parallel to each other, and a connecting member for connecting each sub-column 1y; 1y; 1y and the peripheral surface 1f of the central main column 1x. You may use the support | pillar 1A of a structure.
More specifically, the column 1A has three sub-columns 1y; 1y; 1y arranged at the apex position of a triangle in plan view around the central main column 1x, as shown in FIG. The one end surface 14x of the central main column 1x and the three sub-columns 1y; 1y; 1y each end surface 14y; 14y; 14y are located on the same plane 100 orthogonal to the central axis of the central main column 1x. Thus, the central main column 1x and the three sub-columns 1y; 1y; 1y are individually connected by the connecting member 34. For example, as the central main column 1x, one having a column length longer than that of the sub-column 1y is used, and the central main column 1x is configured to serve as an original column.
Note that the number of sub-columns 1y may be four or more.

Embodiment 6
As shown in FIG. 9 (a), a plurality of pillars 1b; 1b; 1b extending in the same direction and arranged in parallel with each other at the vertex positions of a square having three or more corners in plan view, You may use the support | pillar 1B of the structure provided with the connection member 35 which connects several mutually adjacent pillar body 1b; 1b; 1b.
More specifically, the pillar 1B has three pillars 1b; 1b; 1b arranged at the apex position of a triangle in plan view, and as shown in FIG. 9B, the three pillars 1b; 1b Each end surface 14b of 1b; 14b; 14b; 14b is located on the same plane 100 orthogonal to the central axis of the column 1b, and the adjacent column bodies 1b are connected by the connecting member 35.
The number of column bodies 1b may be four or more.

When the column 1B of the sixth embodiment is used, for example, as shown in FIG. 10, the three columns 1b; 1b; 1b of the column 1B are brought into contact with the horizontal installation surface 9 at one end surface 14b; 14b; After the support column 1B is installed on the installation surface 9, the support column 1 is fixed to the ground by placing concrete around the support column 1B installed on the installation surface 9 and solidifying it.
Similarly, when the column 1A of the fifth embodiment is used, the one end surface 14x of the central main column 1x of the column 1A and the three sub-columns 1y; 1y; 1y each end surface 14y; 14y; After placing the support 1A on the installation surface 9 in contact with the surface 9, the support 1A is fixed to the ground by placing concrete around the support 1A installed on the installation surface 9 and solidifying it.

If the column 1A of the fifth embodiment is used, the three sub-column bodies 1y; 1y; 1y end faces 14y; 14y; 14y are respectively installed at the apex positions of the triangles of the horizontal installation surface 9, and Since the one end surface 14x of the column 1x is installed at the center of the triangle of the horizontal installation surface 9, the self-supporting stability of the column 1A is increased.
If the support | pillar 1B of Embodiment 6 is used, the three pillars 1b; 1b; 1b; 1b each end surface 14b; 14b; 14b which comprises the support | pillar 1B will each be installed in the vertex position of the triangle of the horizontal installation surface 9 Therefore, the self-supporting stability of the three pillars 1b; 1b; 1b is high, and the self-supporting stability of the support column 1B is high.
Therefore, when the support column 1A or the support column 1B is used, the support column 1A or the support column 1B can be easily made independent by simply placing the support column 1A or the support column 1B on the installation surface 9 without using the pipe material 10 or the tube material 10A. The work cost and work time can be further reduced.
Moreover, since the support | pillar 1A is comprised by the four pillar 1x; 1y; 1y; 1y and the connection member 34, the support | pillar 1B is comprised by the three pillar 1b; 1b; 1b and the connection member 35, The rigidity of the support is also increased.
Further, since the support 1A and the support 1B are improved in autonomy, it is possible to perform unmanned work by remotely manipulating the machine, and the support 1A and the support 1B are installed in a place where a person cannot enter such as a disaster area. It can be easily handled in some cases.

Embodiment 7
As shown in FIG. 11, a plurality of pillars 1c that extend in the same direction and are arranged at the vertexes of a square having three or more corners in plan view and parallel to each other, and a plurality of pillars 1c are individually provided. A column provided with a connecting member 36 for connecting a plurality of column bodies 1c so as to be movable in a direction along the central axis of the column body 1c, and an upper stopper 37 and a lower stopper 38 attached to the column body 1c. 1C may be used.
More specifically, the three pillars 1c; 1c; 1c are arranged at the apex positions of the triangles in plan view, the pillars 1c; 1c; 1c adjacent to each other are held by the connecting member 36, and The column bodies 1c; 1c; 1c are individually movable in the direction along the central axis of the column body 1c. That is, the three columns 1b; 1b; 1b of the column 1B of the sixth embodiment shown in FIG. 9 are columns configured to be movable in the direction along the central axis of the column 1b.
As shown in FIG. 12, the column body 1 c is configured by a column body such as a columnar body in which one end portion is formed in a conical surface shape such as a conical surface and one end 14 t is sharply formed.
The connecting member 36 is, for example, a cylindrical body 36a; 36a; 36a, such as three cylindrical bodies having a diameter larger than the column diameter of the column 1c and having a diameter that is similar to the column diameter of the column 1c. The three cylinders 36a; 36a; 36a are provided with a connecting body 36b for connecting the three cylinders 36a; 36a; 36a so that the three cylinders 36a; 36a;
The upper stopper 37 is provided on the peripheral surface of the column 1c passed through the cylinder 36a of the connecting member 36 at a position where it can contact the other end surface 36x of the cylinder 36a. The lower stopper 38 is provided on the circumferential surface of the column 1c passed through the cylinder 36a of the connecting member 36 at a position where it can contact the one end surface 36y of the cylinder 36a.
Then, the interval between the upper stopper 37 and the lower stopper 38 is set to be larger than the length between the one end surface 36x and the other end surface 36y of the cylindrical body 36a, so that the column body 1c has the cylindrical body 36a. It is configured to be movable in a direction along the central axis.
It should be noted that, depending on the distance between the upper stopper 37 and the lower stopper 38, each columnar body 1c; 1c; 1c; one end 14t; 14t; 14t; Uneven difference is decided. Accordingly, the distance between the upper stopper 37 and the lower stopper 38 may be determined according to the magnitude of the unevenness of the bottom surface 7 of the root cutting portion 6.
For example, as shown in FIGS. 11 and 12, the upper stopper 37 is dispersedly arranged at positions where three stopper bodies 37a; 37a; 37a are separated by 120 degrees around the central axis of the column 1c on the peripheral surface of the column 1c. Configured. Similarly to the upper stopper 37, the lower stopper 38 includes three stopper bodies 38a; 38a; 38a that are distributed and arranged at positions spaced 120 degrees around the central axis of the column 1c on the peripheral surface of the column 1c. (For example, see FIG. 11; 12). The stopper bodies 37a; 38a are connected to the peripheral surface of the column body 1c by connection means such as welding or bolts and nuts. Moreover, you may comprise the upper stopper 37 and the lower stopper 38 by cyclic | annular members, such as a tubular body, which are fitted to the column 1c and connected to the peripheral surface of the column 1c.
The number of column bodies 1c may be four or more.

By using the support column 1C, even if the concrete 8 having self-leveling property is not placed on the bottom surface 7 where the root cutting portion 6 is uneven and the horizontal installation surface 9 is not formed, the unevenness of the root cutting portion 6 is formed. It becomes possible to install the column 1 </ b> C directly on the bottom surface 7 with a self-standing.
That is, when the connecting member 36 is hung with a hoist such as a rope using a crane or other lifting machine, the connecting member 36 is caught by the upper stoppers 37 of the three pillars 1c; 1c; 1c. 1C is moved to the root cutting part 6 (see FIG. 13A). When the connecting member 36 is lowered, the three pillars 1c; 1c; 1c of the column 1C are moved so as to approach the bottom surface 7 of the root cutting portion 6 while maintaining a vertical posture state in which the column members 1c; Then, after one end 14t of one column 1c comes into contact with the bottom surface 7 of the root cutting portion 6, the connecting member 36 is lowered until the first end 14t stops at the lower stopper 38 of the column 1c that first contacts the bottom 7. However, by bringing the one end 14t of the other column 1c and the bottom surface 7 into contact with each other (see FIGS. 13B and 13C), the three columns 1c; 1c; It will be installed independently on the bottom 7 with the uneven surface. Then, the hanger is removed from the connecting member 36 (see FIG. 13 (d)), and concrete 126 is placed around the pillar 1C installed on the bottom surface 7 of the root cutting portion 6 that is not flat. It fixes to the ground (refer FIG.13 (e)).
Therefore, if the support column 1C according to the seventh embodiment is used, the support column 1C can be installed independently on the bottom surface 7 where the root cutting part 6 is uneven, so that the installation surface forming step described in the first embodiment can be omitted. , Work cost and work time can be reduced. Further, since the column 1C includes the three columns and the connecting member 36, the column 1C has high rigidity.

Embodiment 8
As shown in FIGS. 14 and 15, the central main column 1d and the apex position of a square extending in the same direction as the central main column 1d and having three or more corners surrounding the central main column 1d in plan view A plurality of sub-columns 1e arranged in parallel to each other and a plurality of sub-columns 1e are individually movable in a direction along the central axis of the central main column 1d. A support column 1D having a connection member 39 that connects the peripheral surface of the central main column 1d may be used.
More specifically, three sub-columns 1e; 1e; 1e are arranged around the central main column 1d at the apex position of the triangle in plan view, and the three sub-columns 1e; 1e; It is the structure connected with the central main pillar 1d so that it can move to the direction along the central axis of the central main pillar 1d. That is, the three sub-columns 1y; 1y; 1y of the column 1A of Embodiment 5 shown in FIG. 8 are configured to be movable in the direction along the central axis of the central main column 1x.
The central main column 1d is constituted by a column such as a cylinder, for example.
The sub-column body 1 e includes a hollow column body 40 and a lid body 41. The hollow column body 40 is closed at one end and closed at the other end, and has an elongated hole 42 extending from the one end opening 43 toward the other end on the peripheral surface. The elongated hole 42 extends along the central axis of the hollow column 40. The lid body 41 is a lid that closes the one end opening 43 of the hollow column body 40.
The three connecting members 39; 39; 39 are provided, for example, so as to protrude in a direction perpendicular to the central axis from positions spaced 120 degrees around the central axis of the column 1c on the peripheral surface of the central main column 1d. . The connecting member 39 includes, for example, a flat plate portion 44 whose protruding end portion is inserted into the elongated hole 42 of the hollow column body 40 of the sub-column body 1e and is movable in the extending direction of the elongated hole 42, and the hollow portion of the sub-column body 1e. A guide column body 45 that is inserted into the hollow portion of the column body 40 and is movable between the one end opening 43 side and the other end side of the hollow column body 40 is provided.
The sub-column 1e is configured such that one end surface 51 is movable below or above the one end surface 50 of the central main column 1d.
The support column 1D inserts the guide column body 45 at the protruding end portion of the connecting member 39 into the hollow portion of the hollow column body 40 from the one end opening 43 side of the hollow column body 40 of the sub-column body 1e. The flat plate portion 44 at the end is inserted into the elongated hole 42 from the one end opening 43 side of the hollow column body 40 of the sub-column 1e, and then the one end opening 43 of the hollow column body 40 is closed by the lid body 41. .
Note that the number of sub-columns 1e may be four or more. Moreover, you may use the sub-column 1e formed in the shape where the lower end was sharp.

If the strut 1D is used, even if the concrete 8 having the self-leveling property is not placed on the bottom surface 7 where the root cutting portion 6 is uneven and the horizontal installation surface 9 is not formed, the unevenness of the root cutting portion 6 is formed. It becomes possible to install the column 1 </ b> D directly on the bottom surface 7 having a self-supporting position.
That is, as shown in FIG. 16A, when the support column 1D is moved so as to approach the bottom surface 7 of the root cutting portion 6, the one end surface 50 of the central main pillar 1d is in contact with the bottom surface 7 and tries to stand on its own. Furthermore, when the level of the position of the portion where the one end surface 51 of the sub-column body 1e contacts is higher than the portion of the bottom surface 7 where the one end surface 50 of the central main column body 1d contacts, the sub-column body 1e moves upward. When the level of the position of the portion where the one end surface 51 of the sub-column 1e is in contact with the bottom 7 is lower than the portion where the one end surface 50 of the central main column 1d is in contact, the sub-column 1e moves downward. The central main column 1d is less likely to tilt, and the central main column 1d is more likely to stand on its own.
After the central main column 1d is in contact with the bottom surface 7 and the central main column 1d is self-supporting and the column 1D is installed on the bottom 7, the concrete 127 is placed around the column 1D to place the column 1D on the ground. Fix it.
Therefore, if the support column 1D of the eighth embodiment is used, the support column 1D can be installed independently on the bottom surface 7 of the root cutting portion 6 with no unevenness, so that the installation surface forming step described in the first embodiment can be omitted. , Work cost and work time can be reduced. Moreover, since the support | pillar 1D was provided with the four column bodies and the connection member 39, the rigidity of the support | pillar 1D also becomes high.

Embodiment 9
In the first embodiment, an example in which concrete placing work is performed using a hopper 19 configured to control opening and closing of the opening and closing plate 18 by opening and closing drive means such as an air cylinder has been described. In this case, by operating a construction machine Both the lifting operation of the hopper 19 and the operation for controlling the opening / closing drive means of the hopper 19 must be performed remotely, increasing the difficulty of the operation.
Therefore, as shown in FIG. 17, if a hopper 60 having a configuration that does not use an opening / closing drive means such as an air cylinder is used, it is not necessary to perform a remote operation of the opening / closing drive means, thereby facilitating the operation.
As shown in FIGS. 17 to 19, the hopper 60 according to the ninth embodiment connects a container 61 for housing concrete 70, an on-off valve 62, a pressure receiving plate 63, an on-off valve 62 and a pressure receiving plate 63. And a connecting shaft 64 as a connecting body.
The container 61 is a top-opening container having a discharge port 66 that is an opening for discharging the concrete 70 to the outside of the container 61 in the bottom plate 65 of the container 61, and the concrete 70 accommodated in the container 61 is discharged to the discharge port. 66 is a concrete storage container that is removably stored through 66.
The on-off valve 62 is a valve disposed inside the container 61 to open and close the discharge port 66, and is formed by a valve body having a diameter larger than the diameter of the discharge port 66 so that the discharge port 66 can be closed. The
A pressure receiving plate 63 as a pressure receiving portion is provided so as to project to the outside of the container 61 by being connected to the on-off valve 62 via a connecting shaft 64 provided so as to penetrate the discharge port 66.
The diameter of the connecting shaft 64 is smaller than the diameter of the discharge port 66. If the difference between the shaft diameter of the connecting shaft 64 and the diameter of the discharge port 66 is increased, the opening when the concrete 70 is discharged through the discharge port 66 can be increased.
The pressure receiving plate 63 moves the opening / closing valve 62 in a direction to open the discharge port 66 by receiving a force from the contact surface when contacting the concrete placing target portion.

That is, in the hopper, when the pressure receiving plate 63 comes into contact with the installation surface or the like and the on-off valve 62 opens the discharge port 66, the concrete 70 in the container 61 passes through the discharge port 66. It is configured to be released to the outside.
That is, as shown in FIG. 19A, when the concrete 70 is accommodated in the container 61, the lower surface 65a of the bottom plate 65 of the container 61 is brought into contact with the ground 67 and the pressure receiving plate 63 is ground 67 or the like. The concrete 70 is poured into the container 61 when the on-off valve 62 is in a state of closing the discharge port 66 by floating in the air in the hole 68 formed in the container.
Then, the hopper 60 is lifted by a construction machine while maintaining the state where the opening / closing valve 62 blocks the discharge port 66, and the hopper 60 is moved to, for example, the bottom surface 7 of the root cutting portion 6 as a concrete placement target portion (FIG. 19 ( b); see (c)).
Then, as shown in FIG. 19C, the hopper 60 is lowered to bring the lower surface 63a of the pressure receiving plate 63 into contact with the bottom surface 7 to move the on-off valve 62 upward, and the upper surface 63b of the pressure receiving plate 63 And the lower surface 65a of the bottom plate 65 are not in contact with each other, and the lower surface 62a of the on-off valve 62 and the inner bottom surface 65b of the bottom plate 65 are not in contact with each other. As a result, the concrete 70 in the container 61 is discharged onto the bottom surface 7 through the discharge port 66. That is, the concrete 70 in the container 61 is between the lower surface 62a of the on-off valve 62 and the inner bottom surface 65b of the bottom plate 65, between the connecting shaft 64 and the hole edge 66a of the discharge port 66, and between the upper surface 63b and the bottom plate of the pressure receiving plate 63. It is discharged onto the bottom surface 7 via the space between the lower surface 65a of 65.
When stopping the discharging operation of the concrete 70, the open / close valve 62 is lowered by its own weight by raising the hopper 60, so that the lower surface 62 a of the open / close valve 62 and the inner bottom surface 65 b around the discharge port 66 in the bottom plate 65 Approaches, and the on-off valve 62 closes the discharge port 66.

According to the hopper 60, since the opening and closing operation of the discharge port 66 is performed only by moving the hopper 60 up and down, an opening and closing drive means such as an air cylinder for opening and closing the opening and closing plate for opening and closing the discharge port can be eliminated. A low-cost hopper can be provided.
Further, it is preferable that the length of the connecting shaft 64 is longer than the depth of the root cutting portion 6 because the concrete 70 can be filled into the root cutting portion 6 up to the upper edge portion of the root cutting portion 6.

Embodiment 10
If the hopper 60A provided with the on-off valve 71 as shown in FIGS. 20 and 21 is used, the concrete 70 can be discharged smoothly. Since the configuration other than the on-off valve is the same as that of the hopper 60 described above, the description thereof is omitted.
The opening / closing valve 71 is an opening operation for improving the operation reliability of the opening operation by reducing the force from the opening / closing lid 72 and the concrete 70 in the container 61 applied to the opening / closing lid 72 when the opening / closing lid 72 is opened. Assisting means.
The opening operation assisting means is formed by a cube 73 having an inclined portion 73a extending in the direction away from the bottom plate 65 of the container 61 from the periphery of the opening / closing lid 72 toward the center of the opening / closing lid 72, that is, upward. . The cube 73 includes a cone having a conical surface forming an inclined portion 73a when the open / close lid 72 is a circular flat plate, and a pyramid having a pyramid surface forming an inclined portion when the open / close lid 72 is a square flat plate. do it. When the opening / closing lid 72 is a rectangular flat plate, a cube may be used in which the triangular prism is laid down and the pyramid surface is used as an inclined portion with at least one side surface of the triangular prism.
It should be noted that the center line passing through the center of the opening / closing lid 72 and the upper end of the inclined portion 73a may not coincide with each other, and the upper end 73t of the inclined portion 73a may be formed on the surface. In order to further reduce the resistance when moving upward, it is preferable that the center line passing through the center of the opening / closing lid 72 and the upper end 73t of the inclined portion 73a coincide with each other, and the upper end 73t of the inclined portion 73a. Is preferably formed in a sharp shape by dots or lines.
The on-off valve 71 may be formed integrally with the opening / closing lid 72 and the opening operation assisting unit, or formed by joining the opening / closing lid 72 and the opening operation assisting unit formed separately. It may be a thing.

When the hopper 60A of the tenth embodiment is used, the opening / closing valve 71 is closed as shown in FIG. 21B from the closed state in which the discharge port 66 is closed by the opening / closing lid 72 of the opening / closing valve 71 as shown in FIG. When opening the discharge port 66, that is, when moving upward, the resistance when the on-off valve 71 moves upward in the concrete 70 due to the inclined portion 73a and the sharp upper end 73t of the opening operation assisting means. As a result, the opening / closing valve 71 opens smoothly.
That is, it is possible to provide a hopper 60A that can be smoothly opened by the on-off valve.

The column fixing method of the present invention is not limited to the case where the column is fixed by unmanned work by remote control in a disaster area where people cannot enter, but the column is fixed to the root cutting part formed on the general ground by manned operation. It is also applicable to
The struts 1C; 1D are not only used as struts that are installed and fixed in disaster areas where people cannot enter, but can also be used as struts that are suitable for installation and fixing on uneven surfaces.
The hopper 60; 60A is not only used when placing concrete in disaster areas where people cannot enter, but can also be used as a hopper for placing concrete or as a hopper used for purposes other than placing concrete. It is.

1; 1A; 1B; 1C; 1D; 1X strut, 1b; 1c pillar,
1d; 1x central main column, 1e; 1y sub-column,
5 Debris flow accumulation part (supporting part for pillar support), 6 root cutting part, 7 bottom face of root cutting part,
8 Concrete with self-leveling, 9 Installation surface, 10; 10A pipe,
36; 39 connecting member, 60; 60A hopper, 61 container,
62; 71 On-off valve, 63 pressure receiving plate (pressure receiving portion), 65 bottom plate of the container, 66 discharge port,
72 Opening and closing lid, 73 cube, 73a inclined part.

Claims (8)

  A root cutting part forming step for rooting the pillar fixing target part to form a root cutting part; and an installation surface forming process for forming an installation surface by placing concrete having self-leveling on the bottom surface of the root cutting part; A pipe installation process for installing one end side of the pipe material on the installation surface, a pipe material fixing process for placing concrete around the pipe material installed on the installation surface and fixing the pipe material to the ground, and the other end opening of the pipe material A support column installation step in which one end side of the support column is inserted into the pipe of the tube material and a column is installed; and a column fixing step in which concrete is placed in the tube of the tube material and the column is fixed to the tube. Prop fixing method.   A root cutting part forming step for rooting the pillar fixing target part to form a root cutting part; and an installation surface forming process for forming an installation surface by placing concrete having self-leveling on the bottom surface of the root cutting part; A column formed by connecting a plurality of columns so that the central axes of the columns are maintained parallel to each other and one end surface of each column is positioned on the same plane perpendicular to the central axis of the columns The pillar installation process that installs one end surface of each column body of the column on the installation surface using the concrete, and concrete is placed around the one end surface side of each column body of the column installed on the installation surface to ground the column A column fixing method comprising: a column fixing step for fixing to a column.   The root cutting part forming step for rooting the column fixing target part to form the root cutting part, and the central axes of the pillars are maintained parallel to each other, and the pillars are moved in the direction along the central axis of the pillars. A pillar installation process in which one end surface of each pillar body of the pillar is installed on the bottom surface of the root cutting part using a pillar configured by connecting a plurality of pillars as possible, and installed on the bottom surface of the root cutting part. A strut fixing method comprising: placing concrete around one end surface side of each pillar body of the strut and fixing the strut to the bottom surface of the root cutting portion.   4. The column fixing target part is a disaster area where a person cannot enter, and the work of each process is performed using a machine operated by remote control. How to fix the column.   4. A column used in the column fixing method according to claim 3, wherein the column extends in the same direction and is arranged at the apex positions of squares having three or more corners in plan view and parallel to each other. And a connecting member that connects the plurality of column bodies so that each of the plurality of column bodies can individually move in a direction along the central axis of the column body.   It is a support | pillar used for the support | pillar fixing method of Claim 3, Comprising: Three or more corners which extend in the same direction as a center main pillar body and a center main pillar body, and surround a center main pillar body in planar view. A plurality of sub-columns arranged parallel to each other at the vertex positions of the squares that each have, and each sub-column body so that each of the sub-columns can individually move in a direction along the central axis of the central main column And a connecting member for individually connecting the peripheral surface of the central main column body.   A concrete hopper for use in the support fixing method according to any one of claims 1 to 4, wherein the concrete is stored and a container having a discharge port for discharging the concrete to the bottom plate; An opening / closing valve disposed inside the container and formed by a valve body having a diameter larger than the diameter of the discharge port, and connected via a connection shaft having a diameter smaller than the diameter of the opening / closing valve and the discharge port. A pressure receiving portion projecting to the outside of the container, and the pressure receiving portion receives the force from the concrete placing target surface and moves the on-off valve in a direction to open the discharge port, thereby allowing the pressure receiving portion and the lower surface of the bottom plate to Is not in contact with each other, and when the on-off valve and the inner bottom surface of the bottom plate are not in contact with each other, the concrete in the container is placed between the on-off valve and the inner bottom surface of the bottom plate between the connecting shaft and the outlet hole. Between the edge and between the pressure receiving part and the bottom surface of the bottom plate Hopper of concrete 設用, characterized in that it is configured to be released into the concreting target surface via.   The opening / closing valve includes an opening / closing lid for opening / closing the discharge port, and an opening operation assisting means for reducing the force from the concrete in the container applied to the opening / closing lid when the opening / closing lid is opened. 8. The concrete placing hopper according to claim 7, wherein the concrete placing hopper is formed of a cube having an inclined portion extending from a peripheral edge of the lid toward a center side of the open / close lid in a direction away from the bottom plate of the container.

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