JP6566481B2 - Removal mechanism, temporary pillar, and removal method - Google Patents

Description

The present invention relates to a temporary pillar removal mechanism, a temporary pillar, and a removal method in a modular plant.

  When a plant is transported from a manufacturing factory to an installation site, the completed plant is disassembled into a plurality of modules and transported, and each module is assembled again at the installation site. At this time, by disassembling into a plurality of modules, a structurally weak portion such as the number of pillars is insufficient. In order to reinforce this structural weakness, a temporary pillar is provided and transported. In this case, it is necessary to remove the temporary pillar after assembling the module.

Since the plant incorporates a heavy machine supported by a plurality of vertical beams and horizontal beams, these loads are applied to the temporary columns after module assembly. Therefore, when removing the temporary pillar, the load must be released and removed, which is not an easy task. Conventionally, a method of suspending a plant with a crane and removing the temporary pillar in a state where a load applied to the temporary pillar is eliminated, or forcibly cutting and removing the temporary pillar has been implemented. However, such a method has a problem that it takes time.

Patent Document 1 describes a configuration of plant construction in which a completed plant is divided into a large number of modules and transported, and each module is assembled at a predetermined position in a foreign country.

Patent Document 1: Japanese Patent Laid-Open No. 60-80628

However, the thing of patent document 1 does not describe about the temporary pillar which reinforces the structural weak point after dividing | segmenting into several modules, and the necessity of a temporary pillar and the removal method are unknown. For this reason, until now, there has been a problem that it is difficult to easily remove the temporary columns that are under load.

This invention makes it a subject to solve the said problem and to be able to remove a temporary pillar by simple operation | work.

In order to solve the above problems, the present invention releases the load applied to the temporary column in order to remove the temporary column provided between the lower beam and supporting the load from the upper beam in the modular plant. A removal mechanism,
A flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the threaded portion of the jack bolt is longer than the sum of the thickness of the shim plate and the thickness of the flange, Ri depressible der the opposing member by the tip of the screw portion of the jack bolt,
It is an object of the present invention to provide a removal mechanism characterized in that the load applied to the temporary column can be released by removing the shim plate from the load receiving portion .

With this configuration, the load can be released by jacking up at the jackup portion and removing the shim plate, and the temporary pillar can be removed with a simple operation.

The shim plate may correspond to the insertion position of the connection bolt and may be configured to have an elongated hole with one end opened.

With this configuration, the shim plate can be easily inserted and removed, and the temporary pillar can be removed with a simple operation.

In order to solve the above problems, the present invention is a temporary column provided between the lower beam and supporting the load from the upper beam in the modular plant,
The temporary pillar has a removal mechanism that releases a load applied to the temporary pillar ,
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the threaded portion of the jack bolt is longer than the sum of the thickness of the shim plate and the thickness of the flange, Ri depressible der the opposing member by the tip of the screw portion of the jack bolt,
The present invention provides a temporary column, wherein the load applied to the temporary column can be released by removing the shim plate from the load receiving portion .

With this configuration, the load can be released by jacking up at the jackup portion and removing the shim plate, and the temporary pillar can be removed with a simple operation.

An upper column and a lower column may be provided, the removal mechanism may be provided between the upper column and the lower column, and the opposing member may be a member at the uppermost portion of the lower column.

With this configuration, the removal mechanism can be provided at a position where the worker can easily work, and the temporary pillar can be removed with a simple work.

The removal mechanism may be provided on the top, and the opposing member may be a member in the upper beam.

With this configuration, it is not necessary to divide the temporary column into an upper column and a lower column, and it is possible to remove the temporary column with a simple operation.

It is good also as a structure which equips the lowest part with the said removal mechanism and the said opposing member is a member in the said lower beam.

With this configuration, it is not necessary to divide the temporary column into an upper column and a lower column, and it is possible to remove the temporary column with a simple operation.

Furthermore, in order to solve the above-mentioned problem, the present invention is a removal method for removing a temporary column provided between a lower beam and receiving a load from an upper beam in a modular plant,
The temporary pillar has a removal mechanism that releases a load applied to the temporary pillar ,
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the screw portion of the jack bolt is longer than the sum of the thickness of the flange and the thickness of the shim plate, and the opposing member can be pressed by the tip of the screw portion of the jack bolt,
A space larger than the thickness of the shim plate between the flange and the opposing member by loosening the connecting bolt, screwing the jack bolt, and pressing the opposing member with the tip of the screw portion of the jack bolt Then, the shim plate is removed and the temporary pillar is removed, thereby providing a removal method.

With this configuration, the load can be released by jacking up at the jackup portion and removing the shim plate, and the temporary pillar can be removed with a simple operation.

With the removal mechanism, the temporary pillar, and the removal method of the present invention, the temporary pillar can be removed with a simple operation.

It is a figure explaining the outline | summary of the temporary pillar removal in Example 1 of this invention. It is a figure explaining the example of the removal mechanism in Example 1 of this invention. It is a figure explaining the example of the removal method in Example 1 of this invention. It is a figure explaining the example of the temporary pillar provided with the removal mechanism in Example 2 of this invention. It is a figure explaining the example of the temporary pillar provided with the removal mechanism in Example 3 of this invention.

A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram for explaining the outline of temporary pillar removal in the first embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a removal mechanism in the first embodiment of the present invention. FIG. 3 is a diagram for explaining an example of the removal method according to the first embodiment of the present invention.

  The temporary pillar in the modular plant receives a load from the upper beam after assembling, so it is difficult to remove it as it is. Therefore, in the present invention, by providing a removal mechanism in a part of the temporary pillar, the load received by the temporary pillar is released, and the temporary pillar is easily removed. In Example 1, the removal mechanism is provided in the middle of the temporary pillar which is a position where an operator can work easily. Here, in the present invention, the modular plant refers to a plant that assembles and completes the divided modules. At this time, since the divided module has a structurally weak portion due to insufficient number of columns, a temporary column is provided to reinforce this, and this temporary column is removed after assembly of the plant.

  Hereinafter, the outline of temporary pillar removal in Example 1 of this invention is demonstrated with reference to FIG. Fig.1 (a) has shown the temporary pillar 100 in the modular plant after an assembly. The temporary pillar 100 includes an upper pillar 150, a lower pillar 160, and a removal mechanism 10. An upper column 150 is fixed to the upper beam 30 with bolts or the like at the upper part of the temporary column 100 and receives a load from the upper beam 30. A lower column 160 is fixed to the lower beam 40 with a bolt or the like at the lower portion of the temporary column 100. The removal mechanism 10 is provided between the upper column 150 and the lower column 160. The length of the upper column 150 and the length of the lower column 160 are arbitrary, but the length of the upper column 150 and the length of the lower column 160 are set so that the removal mechanism 10 is located at a position where an operator can easily work. It is desirable to do. Then, the total of the length of the upper column 150 and the thickness of the shim plates 11 and 12 in the removal mechanism 10 and the length of the lower column 160 is the length from the lower end of the upper beam 30 to the upper end of the lower beam 40. The length of the upper column 150, the thickness of the shim plates 11 and 12 in the removal mechanism 10, and the length of the lower column 160 are set.

The removal mechanism 10 is provided in a state in which a load is applied to the shim plate 11 and the shim plate 12, and a space is created in the removal mechanism 10 by removing the shim plate 11 and the shim plate 12 (FIG. 1B). That is, the distance from the lower end of the upper beam 30 to the upper end of the lower beam 40 is longer than the sum of the length of the upper column 150 and the length of the lower column 160. For this reason, the load applied to the temporary pillar 100 is released (FIG. 1C). The temporary pillar 100 with the load released can be easily removed by removing the bolts and the like that are fixed to the upper pillar 150 and the lower pillar 160 together.

  Next, the removal mechanism 10 will be described in detail with reference to FIG. FIG. 2A is a diagram illustrating the removal mechanism 10 in the temporary column 100, and FIG. 2B is a view taken along the line AA illustrating the shim plate in the removal mechanism 10. FIG. In the following description, a member that faces the flange 21 is referred to as a “facing member”. The removal mechanism 10 includes a flange 21 provided at the lowermost portion of the upper column 150 of the temporary column 100, a load receiving unit 141 formed by inserting the shim plate 11 and the shim plate 12 between the flange 21 and the opposing member, Shim plate fixing part 142 formed by screwing connection bolts 17, 18, 19, 20 between 21 and the opposing member, and the tips of the screw portions of jack bolts 13, 14, 15, 16 face the opposing member And a jack-up portion 140 in which the jack bolts 13, 14, 15, 16 are screwed to the female screw portions 13S, 14S, 15S, 16S provided in the flange 21, and the jack bolts 13, 14, 15, 16 The length of the screw portion is longer than the sum of the thickness of the flange 21 and the thickness of the shim plates 11, 12, and the screw portions of the jack bolts 13, 14, 15, 16 are It is configured to be pressed facing member by the end. Here, the jack bolts 13, 14, 15, and 16 are made of bolts.

  Here, the member (facing member) facing the flange 21 in the first embodiment refers to the facing member 22 at the top of the lower column, and has an area facing the flange 21. And the flange 21, the shim plates 11 and 12, and the opposing member 22 are arrange | positioned along with the perpendicular direction. The connection bolts 17, 18, 19, and 20 are bolts that are inserted through the insertion holes provided in the flange 21 and the opposing member 22, and are screwed into the nuts 17N, 18N, 19N, and 20N.

  As shown in FIG. 2 (b), the shim plate 11 corresponds to the insertion position of the connection bolts 17 and 18, and is a plate material provided with elongated holes 11A and 11B whose one ends are opened. The shim plate 12 is a connection bolt. It is a board | plate material provided with the long holes 12A and 12B which corresponded to the insertion position of 19 and 20 and opened one end. By providing the elongated holes 11A, 11B, 12A, and 12B, the shim plate 11 and the shim plate 12 have a shape having a sufficient area to transmit the tightening force of the connecting bolts 17, 18, 19, and 20, and load receivers. It is easy to insert or remove from the portion 141. The material of the shim plate 11 and the shim plate 12 is not limited, and a material that has strength to support a pillar such as a metal such as iron, aluminum, and stainless steel or a reinforced plastic and is less deformable can be used. The shim plate 11 and the shim plate 12 have the same thickness. Further, the thickness of the shim plate 11 and the shim plate 12 can be appropriately selected depending on the load received by the temporary pillar. That is, it is sufficient that the amount of deflection of the upper column 150 when the shim plate 11 and the shim plate 12 are removed, and if a clearance is formed between the flange 21 and the opposing member 22 after the shim plate 11 and the shim plate 12 are removed. Good.

  In the first embodiment, the two shim plates 11 and 12 are configured as the shim plates to be inserted into the load receiving portion 141. However, the present invention is not limited to this. For example, the length of the long holes 11A and 11B of the shim plate 11 is increased so as to include the position corresponding to the insertion position of the connection bolts 19 and 20, and the shim plate 12 is omitted, and only one shim plate 11 is configured. Also good. Further, each shim plate may have a size corresponding to the insertion position of one connection bolt and may be configured as four plates. Furthermore, it is good also as a structure subdivided as shim plates, such as a square, without providing a long hole.

  In the first embodiment, the connection bolts 17, 18, 19, and 20 are screwed into the nuts 17N, 18N, 19N, and 20N after being inserted through the insertion holes provided in the flange 21 and the opposing member 22, respectively. However, the present invention is not limited to this configuration, and the configuration can be changed as appropriate. For example, the direction in which the connection bolts 17, 18, 19, and 20 are screwed may be a direction from the flange 21 toward the facing member 22, or may be a direction from the facing member 22 toward the flange 21. Alternatively, a flange may be provided at the uppermost part of the lower column 160 and jacked up from below toward the opposing member at the lowermost part of the upper column 150.

  Further, the female screw portions 13S, 14S, 15S, and 16S in the first embodiment are provided by welding nuts to the lower surface of the flange 21 as shown in FIG. However, the present invention is not limited to this, and can be changed as appropriate. For example, a nut may be provided on the upper surface of the flange 21 with strong welding, or a female screw may be formed in the hole of the flange 21.

  In the first embodiment, the number of connection bolts is four and the number of jack bolts is four. However, the number of connection bolts is not necessarily limited to this, and can be appropriately changed depending on the size of the load and the convenience of the removal mechanism. . For example, the number of connection bolts and jack bolts may be two, or five or more.

  Next, the removal method of the temporary pillar in Example 1 is demonstrated with reference to FIG. In a state where the module of the plant is assembled, the removal mechanism 10 is provided between the upper column 150 and the lower column 160, and the connection bolts 17, 18, 19, and 20 are screwed into the nuts 17N, 18N, 19N, and 20N. Thus, a shim plate fixing portion 142 is formed (FIG. 3A). The shim plates 11 and 12 (see FIG. 2B) receive the load from the upper beam 30 (see FIG. 1) and form the load receiving portion 141.

  First, connection bolts 17, 18, 19, and 20 (see FIGS. 2A and 2B) and nuts 17N, 18N, 19N, and 20N (see FIG. 2A), but nuts 19N and 20N are not shown. ) Is loosened to create a clearance such as a clearance A shown in FIG. Next, the screwing of the jack bolts 13, 14, 15, 16 is tightened, and the tip of the screw portion is pressed against the opposing member 22. By this pressing, a clearance B is obtained between the flange 21 and the shim plates 11 and 12 (FIG. 3B). As a result, a space larger than the thickness of the shim plates 11 and 12 is formed between the flange 21 and the opposing member 22, the load applied to the shim plates 11 and 12 is released, and the shim plates 11 and 12 are easily removed. It becomes possible.

  Next, the shim plates 11 and 12 are removed by being pulled out from the load receiving portion 141 (FIG. 3C). Next, the nuts 17N, 18N, 19N, and 20N are further loosened, and the connecting bolts 17, 18, 19, and 20 are removed. As a result, the upper column 150 and the lower column 160 can be easily removed, so that these are removed and the removal of the temporary column 100 is completed.

  In the first embodiment, the connection bolts 17, 18, 19, and 20 are removed after the shim plates 11 and 12 are removed. However, the present invention is not necessarily limited to this, and can be changed as appropriate. For example, the shim plates 11 and 12 may be removed after the connection bolts 17, 18, 19 and 20 are removed first. In this case, the shim plates 11 and 12 can be removed without the long holes 11A, 11B, 12A, and 12B, and a shim plate having a simple shape can be obtained.

As described above, in the first embodiment of the present invention, the removal provided for the temporary column in order to remove the temporary column provided between the lower beam and supporting the load from the upper beam in the modular plant. Mechanism,
A flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the screw portion of the jack bolt is longer than the sum of the thickness of the flange and the thickness of the shim plate, and the removing member is capable of pressing the opposing member by the tip of the screw portion of the jack bolt. Thus, the temporary pillar can be removed by a simple operation.

Also, a temporary pillar provided between the lower beam to support the load from the upper beam in the modular plant,
The temporary pillar has a removal mechanism,
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the screw portion of the jack bolt is longer than the sum of the thickness of the flange and the thickness of the shim plate, and the temporary column can press the opposing member by the tip of the screw portion of the jack bolt. Thus, the temporary pillar can be removed by a simple operation.

Furthermore, it is a removal method for removing a temporary pillar provided between the lower beam in response to a load from the upper beam in a modular plant,
The temporary pillar has a removal mechanism;
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the screw portion of the jack bolt is longer than the sum of the thickness of the flange and the thickness of the shim plate, and the opposing member can be pressed by the tip of the screw portion of the jack bolt,
A space larger than the thickness of the shim plate between the flange and the opposing member by loosening the connecting bolt, screwing the jack bolt, and pressing the opposing member with the tip of the screw portion of the jack bolt After the formation, the temporary plate can be removed by a simple operation by a removal method characterized by removing the shim plate and removing the temporary column.

  The second embodiment of the present invention is different from the first embodiment in that the removal mechanism is provided at the uppermost part of the temporary pillar. Hereinafter, Example 2 will be described with reference to FIG. FIG. 4 is a diagram illustrating an example of a temporary column provided with a removal mechanism according to the second embodiment of the present invention.

  As shown in FIG. 4, the removal mechanism 210 is provided on the uppermost part of the temporary pillar 200. The removal mechanism 210 is the same as the removal mechanism 10 in the first embodiment, but the member (opposing member) facing the flange is a member in the upper beam 30, and the jack bolt extends from the flange at the top of the temporary column to the upper beam 30. It is the composition for. A protective plate 220 that protects the upper beam 30 is provided between the upper beam 30 and the screw portion tip of the jack bolt and between the upper beam 30 and the shim plate. The protection plate 220 is made of a plate material, and the material thereof is arbitrary, but a material having strength and less deformation for supporting a pillar such as a metal such as iron, aluminum or stainless steel or reinforced plastic can be used. Further, the size of the protection plate 220 may be a size that includes at least all of the pressing points by the screw bolt tip and the shim plate, and the thickness of the protective plate 220 is not limited even if the screw bolt tip is pressed. Any thickness that can protect 30 without damaging it is acceptable.

  Also in the second embodiment, when removing, the connection bolt is loosened, the jack bolt is screwed and the member in the upper beam 30 is pressed by the tip of the threaded portion, and the flange and the member in the upper beam 30 facing the flange are between. After the space larger than the thickness of the shim plate is formed, the shim plate is removed so that the temporary column 200 is not subjected to a load, and the temporary column 200 is removed.

  As described above, in the second embodiment, the removal mechanism is a temporary column provided at the uppermost portion, so that the upper column and the lower column can be made unnecessary, and the temporary column can be removed by a simple operation. be able to.

  The third embodiment of the present invention differs from the first embodiment in that a removal mechanism is provided at the lowermost part of the temporary column. Hereinafter, Example 3 will be described with reference to FIG. FIG. 5 is a diagram for explaining an example of a temporary column provided with a removal mechanism according to the third embodiment of the present invention.

  As shown in FIG. 5, a removal mechanism 310 is provided at the lowermost part of the temporary pillar 300. The removal mechanism 310 is the same as the removal mechanism 10 in the first embodiment, but a member (opposing member) facing the flange is a member in the lower beam 40, and the jack bolt extends from the lowermost flange of the temporary column to the lower beam 40. It is the composition for. A protective plate 320 is provided between the lower beam 40 and the screw portion tip of the jack bolt and between the lower beam 40 and the shim plate. The protective plate is made of a plate material, and the material thereof is arbitrary. However, a material that has strength to support a pillar such as a metal such as iron, aluminum, and stainless steel or a reinforced plastic and that is less deformed can be used. Further, the size of the protective plate may be a size that includes at least all the pressing points by the screw bolt tip of the jack bolt and the shim plate, and the thickness is low even if the screw bolt tip of the jack bolt is pressed. Any thickness can be used as long as it can be protected without being damaged.

  Also in the third embodiment, when removing, the connection bolt is loosened, the jack bolt is screwed and the member in the lower beam 40 is pressed by the tip of the screw portion, and the flange and the member in the lower beam 40 facing the flange are connected. After a space larger than the thickness of the shim plate is formed therebetween, the shim plate is removed so that the temporary column 300 does not receive a load, and the temporary column 300 is removed.

  As described above, in the third embodiment, the removal mechanism is a temporary column provided at the lowermost portion, so that the upper column and the lower column can be made unnecessary and the temporary column can be removed by a simple operation. be able to.

The removal mechanism, temporary column, and removal method in the present invention can be widely used in the field of modular plants.

10: Removal mechanism 11: Shim plate 12: Shim plate 11A: Slotted hole 11B: Slotted hole 12A: Slotted hole 12B: Slotted hole 13: Jack bolt 14: Jack bolt 15: Jack bolt 16: Jack bolt 13S: Female thread portion 14S: Female thread portion 15S: Female thread portion 16S: Female thread portion 17: Connection bolt 18: Connection bolt 19: Connection bolt 20: Connection bolt 17N: Nut 18N: Nut 19N: Nut 20N: Nut 21: Flange 22: Member facing the flange (opposite) 30) Upper beam 40: Lower beam 100: Temporary column 140: Jack-up portion 141: Load receiving portion 142: Shim plate fixing portion 150: Upper column 160: Lower column 200: Temporary column 210: Removal mechanism 220: Protection plate 300: Temporary pillar 310: Removal mechanism 320: Protection play

Claims (7)

In order to remove the temporary column provided between the lower beam and supporting the load from the upper beam in the modular plant, a removal mechanism that releases the load applied to the temporary column ,
A flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the threaded portion of the jack bolt is longer than the sum of the thickness of the shim plate and the thickness of the flange, Ri depressible der the opposing member by the tip of the screw portion of the jack bolt,
The removal mechanism characterized in that the load applied to the temporary column can be released by removing the shim plate from the load receiving portion .   2. The removal mechanism according to claim 1, wherein the shim plate includes an elongated hole corresponding to an insertion position of the connection bolt and having one end opened. A temporary pillar provided between the lower beam and supporting the load from the upper beam in the modular plant,
The temporary pillar has a removal mechanism that releases a load applied to the temporary pillar ,
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the threaded portion of the jack bolt is longer than the sum of the thickness of the shim plate and the thickness of the flange, Ri depressible der the opposing member by the tip of the screw portion of the jack bolt,
The temporary pillar, wherein the load applied to the temporary pillar can be released by removing the shim plate from the load receiving portion .   The upper column and the lower column are provided, the removal mechanism is provided between the upper column and the lower column, and the opposing member is a member at the uppermost part of the lower column. Temporary pillar described.   The temporary column according to claim 3, wherein the removal mechanism is provided at an uppermost portion, and the facing member is a member in the upper beam.   The temporary column according to claim 3, wherein the removal mechanism is provided at a lowermost part, and the opposing member is a member in the lower beam. A removal method for receiving a load from an upper beam in a modular plant and removing a temporary pillar provided between the lower beam,
The temporary pillar has a removal mechanism that releases a load applied to the temporary pillar ,
The removal mechanism includes a flange,
A load receiving portion formed by inserting a shim plate between the flange and a facing member which is a member facing the flange;
A shim plate fixing portion formed by screwing a connection bolt between the flange and the facing member;
A jack-up portion formed by screwing the jack bolt into a female screw portion provided in the flange so that the tip of the screw portion of the jack bolt faces the opposing member;
The length of the screw portion of the jack bolt is longer than the sum of the thickness of the flange and the thickness of the shim plate, and the opposing member can be pressed by the tip of the screw portion of the jack bolt,
A space larger than the thickness of the shim plate between the flange and the opposing member by loosening the connecting bolt, screwing the jack bolt, and pressing the opposing member with the tip of the screw portion of the jack bolt The removal method is characterized by removing the shim plate and removing the temporary pillar after forming.

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