JP6792947B2 - Antiseptic construction method for tower members - Google Patents

Description

The present invention relates to an antiseptic construction method for a steel tower member, which prevents corrosion of the steel tower member by suppressing the generation of rust in the steel tower member.

Conventionally, a steel tower has been constructed by combining a plurality of main pillar members extending from a concrete foundation provided on the ground and a plurality of steel tower members such as diagonal members connected to the main pillar material. There is. A tubular steel pipe may be used as the tower member.

In this type of tower, an antiseptic method for the tower member is used to suppress the generation of rust inside the tower member. In such an antiseptic method, a gas is constantly circulated inside the main pillar material from the opening at the upper end of the main pillar material, and water inside the main pillar material is discharged together with the gas from the opening at the lower end of the main pillar material. Therefore, since the inside of the main pillar material is always maintained in a dry state, the generation of rust inside the main pillar material is suppressed, and thereby corrosion of the main pillar material is prevented (see, for example, Patent Document 1). ).

However, when a tower member having openings at both ends closed (for example, a root-wound diagonal member) is used for the tower, the conventional antiseptic method cannot be applied to the tower member.

More specifically, in the conventional antiseptic method, since it is necessary to form an opening for injecting gas inside and an opening for discharging the gas injected inside in the tower member, both ends are required. It could not be applied to tower members whose openings are closed.

JP-A-2002-242332

Therefore, in view of such circumstances, it is an object of the present invention to provide an antiseptic construction method for a steel tower member capable of taking measures to prevent corrosion of the steel tower member whose openings at both ends are closed.

The anticorrosive method for steel tower members of the present invention includes a columnar pipe having both ends in the longitudinal direction and a pair of closed portions that block each opening of the pillar pipe and are integrated or separate from the pillar pipe. This is an anticorrosive method for a steel tower member that prevents corrosion of the steel tower member provided with the above, and a communication port for communicating the inside and the outside of the steel tower member is formed at one of the closed portions or one end of the column pipe. By injecting gas into the support tube from the communication port from which the communication port is closed and the communication port is provided with a removable sealing plug, the inside of the support tube is provided. An insertion step of inserting a corrosion inhibitor having at least one accommodating portion for accommodating an anticorrosive agent for suppressing the generation of rust inside the strut pipe from the communication port into the inside of the strut pipe. After each of the drying step and the inserting step is performed, it is provided with a sealing step of sealing the communication port of the support tube with the sealing plug.

According to such a configuration, a communication port for communicating the inside and the outside of the tower member is formed with respect to one closing portion or one end of the support pipe, so that the inside of the support pipe is provided through the communication port. Can work on.

In the drying step, the inside of the strut pipe is dried by injecting gas into the inside of the strut pipe from the communication port, so that the inside of the strut pipe is less likely to be rusted. Then, in the insertion step, a corrosion inhibitor having at least one accommodating portion for accommodating the anticorrosive agent for suppressing the generation of rust inside the strut pipe is inserted into the strut pipe through the communication port, so that the accommodating portion is inserted into the accommodating portion. The anticorrosive agent in the portion suppresses the generation of rust inside the strut pipe, thereby preventing the corrosion of the steel tower member.

Further, in the sealing step performed after each of the drying step and the insertion step, since the communication port of the support tube is sealed by the sealing plug, it is possible to prevent moisture from entering the inside of the support tube through the communication port. Therefore, since the dry state inside the strut pipe can be maintained more reliably, the occurrence of rust inside the strut pipe can be suppressed more reliably.

As described above, in the antiseptic construction method of the steel tower member, measures for preventing corrosion can be applied to the inside of the steel tower member whose both ends are closed.

As one aspect of the antiseptic construction method for the steel tower member according to the present invention, the corrosion prevention tool is a plurality of the accommodating portions, each of which is arranged in the longitudinal direction of the strut pipe and connected to each other. In addition, in the insertion step, each of the plurality of accommodating portions may be inserted into the inside of the support tube from the communication port.

According to such a configuration, in the insertion step, a plurality of accommodating portions, each of which is arranged in the longitudinal direction of the strut pipe and connected to each other, are inserted into the strut pipe from the communication port, so that the plurality of accommodating portions inside the strut pipe are inserted. By arranging each of the above in the longitudinal direction, it becomes easy to suppress the occurrence of rust over the entire length of the strut pipe in the longitudinal direction. As a result, corrosion of the tower member is more reliably prevented.

As another aspect of the antiseptic construction method for the steel tower member according to the present invention, the corrosion inhibitor may include a connector to which the plurality of accommodating portions are connected, and the connector may be connected to the sealing plug.

According to such a configuration, since each of the plurality of accommodating portions is connected to the sealing plug via the connector, each accommodating portion is fixed to the strut pipe as the communication port of the strut pipe is sealed with the sealing plug, and the sealing plug is closed. Each accommodating portion is removed from the strut pipe as it is removed from the communication port. Therefore, since each accommodating portion can be easily fixed and removed from the support column pipe, maintainability can be improved.

As another aspect of the antiseptic construction method for steel tower members according to the present invention, in the drying step, when the inside of the support pipe is dried by a blower having a blower pipe for blowing gas supplied from the blower, the inside of the support pipe is dried from the communication port. the distal end portion of the air blowing tube inserted into the inside of the strut tube is placed into the end-side position to the and the communication port on the other side is not provided with the one end of the strut tube and air blowing tube Gas may be injected into the support tube.

According to such a configuration, since the gas is injected into the inside of the support pipe by the blower pipe arranged at the position corresponding to the other end of the support pipe, the gas is injected from the other end side of the support pipe which does not communicate with the outside to the outside. The gas can flow toward one end side that communicates with. Therefore, in the antiseptic method for the steel tower member, the inside of the strut pipe can be efficiently dried by injecting gas into the other end side of the strut pipe and discharging the gas inside the strut pipe to the outside of the strut pipe. it can.

Wherein in the drying step, the said blower pipe disposed in the other end of the strut tube tip upon removal from the interior of the strut tube, wherein one end of the position of the blower tube the strut tube It may be repeated to shift to the side and to fasten the blower pipe in a state of being shifted to one end side of the support pipe.

According to such a configuration, when the blower pipe is taken out from the inside of the support pipe, the entire inside of the support pipe is stopped in order to hold the blower pipe that sends out the gas generated by the blower at each position between both ends of the support pipe. Is easily exposed to gas. Therefore, the inside of the strut pipe can be dried more reliably, and thereby the occurrence of rust inside the strut pipe can be suppressed more reliably.

As described above, according to the antiseptic construction method for the steel tower member of the present invention, it is possible to exert an excellent effect that the steel tower member having the openings at both ends sealed can be treated to prevent corrosion. ..

FIG. 1 is a schematic view of a steel tower to be worked on by the antiseptic method for steel tower members according to an embodiment of the present invention. FIG. 2 is an enlarged view of an end portion of a support tube of a diagonal member according to the same embodiment. FIG. 3 is a schematic view of a blower used in the antiseptic method for steel tower members according to the same embodiment. FIG. 4 is a schematic view of a corrosion inhibitor used in the antiseptic method for steel tower members according to the same embodiment. FIG. 5 is a partial cross-sectional view of a guide member used in the antiseptic method for the steel tower member according to the same embodiment. FIG. 6 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and is an explanatory view of a state in which a communication port is formed in a diagonal member. FIG. 7 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and is an explanatory view of a state in which an insertion portion is inserted into a communication port. FIG. 8 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and FIG. 8A is a cross section of a support pipe in a state where an insertion portion, a guide member, and a ventilation pipe are inserted into a communication port. It is a figure, (b) is a plan view of a guide member in a state where a blower pipe is inserted. FIG. 9 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and is an explanatory view of a state in which a blower pipe is inserted into each diagonal member. FIG. 10 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and FIG. 10A is an explanatory view of a state in which gas is injected from a blower pipe arranged at the other end of a support pipe. (B) is an explanatory view of a state in which gas is injected from a blower pipe moved to one end side of a support pipe. FIG. 11 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and is an explanatory view of a state in which a corrosion preventive tool is inserted inside a strut pipe. FIG. 12 is an explanatory view of an antiseptic construction method for a steel tower member according to the same embodiment, and is an explanatory view of a state in which a corrosion inhibitor is installed on each diagonal member. FIG. 13 is an explanatory view of an antiseptic construction method for a steel tower member according to another embodiment of the present invention, and is an explanatory view of a state in which a corrosion preventive tool is inserted inside a strut pipe.

Hereinafter, the antiseptic construction method (hereinafter referred to as the antiseptic construction method) for the steel tower member according to the embodiment of the present invention will be described with reference to the attached drawings.

The antiseptic method according to the present embodiment relates to an antiseptic method for a tower member that prevents corrosion of the tower member by suppressing the generation of rust inside the tower member. Further, in the antiseptic method, a blower for drying the inside of the tower member and a corrosion preventive tool for arranging an anticorrosive agent for suppressing the generation of rust inside the tower member are used. First, the steel tower, the blower, and the corrosion inhibitor will be described.

As shown in FIG. 1, the steel tower 1 includes a plurality of main pillar members 10 extending from a foundation portion B provided on the ground, a plurality of horizontal members 11 straddling each of adjacent main pillar members 10, and a plurality of horizontal members 11. It has a plurality of diagonal members 12 that support the horizontal member 11. That is, the steel tower 1 according to the present embodiment has a plurality of main pillar members 10, a plurality of horizontal members 11, and a plurality of diagonal members 12 as steel tower members serving as a framework. In this embodiment, FIG. 1 illustrates two main pillar members 10, one horizontal member 11, and two diagonal members 12. Further, in the present embodiment, the following description will be given on the premise that measures are taken to prevent corrosion of the diagonal member 12 of the steel tower members.

Each main pillar member 10 has a base end portion embedded in the foundation portion B. In the steel tower 1 according to the present embodiment, each of the base end portions of the main pillar members 10 is embedded in the foundation portion B provided on the ground having different heights. The foundation portion B is made of concrete.

Each horizontal member 11 is bridged over each of the adjacent main pillar members 10.

Each diagonal member 12 has a support tube 120 that is tubular and has openings at both ends closed. Further, as shown in FIGS. 2 and 11, the diagonal member 12 has a communication port 121 that communicates the inside and the outside. Further, each diagonal member 12 according to the present embodiment has a sealing member 122 that seals the communication port 121.

As shown in FIG. 1, in each diagonal member 12 according to the present embodiment, a connecting portion 123 that can be connected to the horizontal member 11 is provided at at least one end of the support column 120. In the support column 120 according to the present embodiment, one end is connected to the horizontal member 11 via the connecting portion 123, and the other end is embedded in the foundation portion B. It is provided for both ends of the support tube 120. Therefore, the openings at both ends of the support column 120 are closed by the connecting portion 123.

The diagonal member 12 is installed in a state where one end of the support tube 120 is arranged above the other end of the support tube 120.

The strut pipe 120 has two pipe materials 120a. Each pipe material 120a includes a tubular tubular portion 120b and a flange portion 120c connected to one end of the tubular portion 120b in the direction of the center line.

The other end of one tube 120b constitutes one end of the strut tube 120. The other end of the other tubular portion 120b constitutes the other end of the strut tube 120. Therefore, in the diagonal member 12 according to the present embodiment, the opening of the other end portion in one tubular portion 120b is closed by the connecting portion 123, and the opening of the other end portion in the other tubular portion 120b is closed by the connecting portion 123. Will be done.

In each pipe material 120a, the flange portion 120c extends from the entire outer circumference of one end of the tubular portion 120b in the radial and outward directions of the tubular portion 120b. In each strut tube 120, the flange portion 120c has a plurality of connecting holes (not shown) formed at intervals in the circumferential direction. Therefore, the two pipe members 120a can be connected to each other in a state where the flange portions 120c are butted against each other.

In each diagonal member 12, the strut pipe 120 may include a relay pipe 120d that connects the two pipe members 120a to each other. The relay tube 120d includes a tubular relay tube portion 120e and a flange portion 120f formed at each end of the relay tube portion 120e in the center line direction.

Therefore, when the support pipe 120 of each diagonal member 12 is provided with the relay pipe 120d, the flange portion 120c of one pipe material 120a is connected to the one flange portion 120f of the relay pipe 120d, and the flange portion 120c of the other pipe material 120a is connected. It is connected to the other flange portion 120f of the relay pipe 120d.

In the steel tower 1 according to the present embodiment, the support pipes 120 of one of the diagonal members 12 have two pipe members 120a connected to each other via a relay pipe 120d. Then, in the support column 120 of the other diagonal member 12, the two tube members 120a are directly connected. That is, the strut pipe 120 of one diagonal member 12 is longer than the strut pipe 120 of the other diagonal member 12.

As shown in FIGS. 2 and 11, each of the pair of connecting portions 123 in each diagonal member 12 has a main body portion 123a that can be connected to the horizontal member 11, and an open end edge of the main body portion 123a and the column pipe 120. It has a closing plate 123b that closes between them. The communication port 121 is formed in the closing plate 123b of one of the connecting portions 123.

The sealing member 122 is an insertion portion 124 that is inserted into the communication port 121, and is inserted into an insertion portion 124 including an insertion hole 124a that penetrates in the direction of insertion into the communication port 121 and the insertion portion 124. The sealing plug 125 is to be formed, and has a sealing plug 125 including a fixing hole 125a that penetrates in the insertion portion 124 in the direction of insertion.

The hole diameter of the insertion hole 124a is preferably larger than the outer diameter of the blower pipe 21. That is, it is preferable that the insertion portion 124 has a gap formed between the inner peripheral portion and the outer peripheral portion of the blower pipe 21 in a state where the blower pipe 21 is inserted into the insertion hole 124a.

The insertion portion 124 is a tubular insertion portion main body 124b, and the insertion portion main body 124b whose outer circumference is in close contact with the portion defining the communication port 121 of the closing plate 123b, and the insertion portion main body. It is a stop portion 124c formed at one end in the center line direction of the 124b, and has a stop portion 124c extending outward in the radial direction from the entire outer circumference of the insertion portion main body 124b.

The insertion hole 124a penetrates through the insertion portion main body 124b and the stop portion 124c. As described above, the stop portion 124c extends radially outward from the entire outer circumference of the insertion portion main body 124b. Further, the outer diameter of the stop portion 124c is larger than the hole diameter of the communication port 121. Therefore, in the insertion portion 124, when the insertion portion main body 124b is inserted into the communication port 121, the stop portion 124c comes into contact with the closing plate 123b.

The sealing plug 125 is a tubular insertion portion 125b, and has an insertion portion 125b whose entire outer circumference is in close contact with the inner circumference of the insertion portion 124 (the inner circumference of the insertion portion main body 124b and the inner circumference of the stop portion 124c). The head 125c is formed at one end of the insertion portion 125b in the center line direction, and has a head 125c extending from the entire outer circumference of the insertion portion 125b in the radial outward direction. ..

The fixing hole 125a penetrates through the insertion portion 125b and the head 125c. The outer diameter of the head 125c is larger than the hole diameter of the insertion hole 124a. Therefore, in the closed plug 125, when the insertion portion 125b is inserted into the insertion hole 124a of the insertion portion 124, the head 125c comes into contact with the stop portion 124c.

Further, the sealing plug 125 is configured so that the insertion portion 125b can maintain the state of being inserted into the insertion hole 124a of the insertion portion 124. This will be described more specifically. A female screw is formed on the inner circumference of the insertion portion 124 (the inner circumference of the insertion portion main body 124b and the inner circumference of the stop portion 124c). That is, the insertion hole 124a is a screw hole. Then, a male screw screwed into the female screw of the insertion hole 124a is formed on the outer circumference of the insertion portion 125b of the sealing plug 125. Therefore, in the closed plug 125, the insertion portion 125b can be screwed into the insertion hole 124a. As a result, the sealing plug 125 is configured to be detachable from the insertion portion 124.

As shown in FIG. 3, the blower device 2 includes a blower 20 that blows out gas, and at least one (two in this embodiment) blower pipe 21 into which the gas from the blower 20 flows. Further, the blower device 2 includes a generator 22 that supplies electric power to the blower 20. Further, the blower device 2 according to the present embodiment includes a connecting portion 23 for connecting the blower 20 and each blower pipe 21. The blower 2 includes a metal cap portion 24 attached to each blower pipe 21.

The blower device 2 according to the present embodiment includes two blower pipes 21. Each blower pipe 21 is long. In addition, each blower pipe 21 has flexibility. Each blower pipe 21 has a proximal end connected to the connecting portion 23 and a tip opposite to the proximal end. Further, each blower pipe 21 has a scale 210 capable of measuring the distance in the longitudinal direction.

The scale 210 can measure the distance in the longitudinal direction of the blower pipe 21 with reference to the tip of the blower pipe 21. Therefore, in the blower device 2, the amount of the blower pipe 21 inserted into the support pipe 120 can be grasped by the scale 210.

Each blower pipe 21 has a different length. That is, one blower pipe 21 is longer than the other blower pipe 21.

The connecting portion 23 has a connecting pipe 230 that is fluidly connected to the blower 20 and a branch portion 231 that is connected to the blower 20 via the connecting pipe 230.

The connecting pipe 230 is long. Further, the connecting pipe 230 has flexibility.

The branch portion 231 fluidly connects the two blower pipes 21 to the connecting pipe 230. Therefore, in the blower device 2, the gas injected from the blower 20 into the connection pipe 230 is sent to each blower pipe 21 via the branch portion 231. That is, the branching portion 231 branches the gas injected from the blower 20 into the connecting pipe 230 into each blower pipe 21. When the blower device 2 includes one blower pipe 21, the branch portion 231 fluidly connects the one blower pipe 21 to the connection pipe 230.

The cap portion 24 is made of metal. The cap portion 24 has a tubular shape. The tip of the blower pipe 21 is inserted into the inside of the cap portion 24. One end of the cap portion 24 in the center line direction is arranged so as to correspond to the tip of the blower pipe 21. Further, one end of the cap portion 24 is rounded.

As shown in FIG. 4, the corrosion inhibitor 3 includes at least one accommodating portion 30 accommodating an anticorrosive agent (for example, a vaporization rust inhibitor or a desiccant) that suppresses the generation of rust inside the strut pipe 120, and the said. A connector 31 connected to the accommodating portion 30 is provided.

The corrosion preventive tool 3 according to the present embodiment includes a plurality of accommodating portions 30. Each accommodating portion 30 is a case 300 capable of accommodating an anticorrosive agent, and has a case 300 having an opening (not shown) and a connecting ring 301 for connecting the connector 31 to the case 300. The case 300 preferably has a cover that can open and close the opening. In this way, it is possible to prevent the anticorrosive agent contained in the case 300 from leaking out of the case 300 through the opening. Further, the case 300 according to the present embodiment is formed in a mesh shape to ensure air permeability between the inside and the outside.

The case 300 extends in one direction. A separate connecting ring 301 is attached to each end of the case 300 in the longitudinal direction. That is, the accommodating portion 30 has a pair of connecting rings 301 arranged in one direction.

The connector 31 has a fixing connector 310 that is connected to a single housing portion 30. Further, the connector 31 has a plurality of intermediate connectors 311 for connecting the accommodating portion 30 to another accommodating portion 30.

The fixing connector 310 includes a flexible and long fixing line 310a, and a detachable portion 310b attached to one end of the fixing line 310a in the longitudinal direction and detachable from the connecting ring 301 of the accommodating portion 30. Has.

Each intermediate connector 311 has a flexible and long connecting line 311a and a pair of attachments attached to each end of the connecting line 311a in the longitudinal direction and detachable from the connecting ring 301 of the accommodating portion 30. It has a part 311b.

In the antiseptic construction method according to the present embodiment, as shown in FIG. 5, in addition to the blower 2 and the corrosion preventive tool 3, the guide member 4 to be inserted into the communication port 121 of the steel tower member is further used. Hereinafter, the guide member 4 will be described.

As shown in FIGS. 5 and 8 (a) and 8 (b), the guide member 4 has a tubular guide tube portion 40 and a taper extending from one end of the guide tube portion 40 in the center line direction. It has a part 41 and. Further, the guide member 4 according to the present embodiment has at least one protective tube 42 arranged in the guide tube portion 40.

The guide pipe portion 40 is inserted into the communication port 121 of the diagonal member 12. The guide pipe portion 40 according to the present embodiment is inserted into the communication port 121 via the insertion portion 124. The inner diameter of the guide pipe portion 40 is larger than the outer diameter of the blower pipe 21. That is, the guide pipe portion 40 is configured so that a gap is formed between the guide pipe portion 40 and the blower pipe 21 inserted therein.

The length of the guide tube portion 40 is larger than the length of the insertion portion 124 in the center line direction of the insertion hole 124a. Therefore, a part of the guide tube portion 40 is exposed from the insertion portion 124 in a state of being inserted into the insertion hole 124a.

The inner diameter of the tapered portion 41 increases as the distance from the guide pipe portion 40 increases. Further, the tapered portion 41 has flexibility. Therefore, the tapered portion 41 can be inserted into the insertion hole 124a of the insertion portion 124 by folding, and the shape is restored when the entire tapered portion 41 is arranged in the support column 120.

The guide member 4 according to the present embodiment has a plurality of protective tubes 42. Each protection tube 42 is fixed in the guide tube portion 40. Although the protective tube 42 is arranged so as to straddle the guide tube portion 40 and the tapered portion 41, it may be arranged only in the guide tube portion 40.

The steel tower 1, the blower 2, the corrosion preventive tool 3, and the guide member 4 according to the present embodiment are as described above. Subsequently, the antiseptic method will be described with reference to the attached drawings.

The antiseptic method according to the present embodiment includes a drying step of drying the inside of the support pipe 120 by injecting gas into the support pipe 120 from the communication port 121 from which the sealing plug 125 is removed, and the corrosion prevention tool 3. An insertion step of inserting the accommodating portion 30 from the communication port 121 into the inside of the support tube 120, a drying step, and a sealing step of sealing the communication port 121 of the support tube 120 with a sealing plug 125 after each of the insertion steps. To be equipped.

This will be described more specifically. As shown in FIG. 6, in the antiseptic construction method according to the present embodiment, when the drying step is performed, the closing portion 123 of any one of the pair of closing portions 123 that close each opening of the support pipe 120 in the diagonal member 12. A preparatory step for forming the communication port 121 in (the closing plate 123b of one closing portion 123) is provided.

As described above, the diagonal member 12 is installed in a state where one end of the support tube 120 is arranged above the other end of the support tube 120. Therefore, in the preparatory step, one end of the support tube 120 is installed. A communication port 121 is formed in the closing plate 123b that closes the end portion.

By forming the communication port 121 in the closing plate 123b in this way, it is possible to work inside the strut pipe 120 while suppressing the decrease in the strength of the strut pipe 120.

In the preparatory step according to the present embodiment, in each of the two diagonal members 12, the communication port 121 is formed in the closing plate 123b that closes one end of the support pipe 120.

Further, in the preparation step according to the present embodiment, the insertion portion 124 of the sealing member 122 is attached to the communication port 121. This will be described more specifically. As shown in FIG. 7, the insertion portion main body 124b is inserted into the communication port 121, and the stop portion 124c is brought into contact with the closing plate 123b. As a result, the insertion portion 124 is attached to the closing plate 123b. In order to fix the insertion portion 124 to the closing plate 123b, for example, after applying an adhesive to the outer periphery of the insertion portion main body 124b, the insertion portion main body 124b may be inserted into the communication port 121. In this way, the outer periphery of the insertion portion main body 124b and the portion defining the communication port 121 of the closing plate 123b are adhered to each other by the adhesive. Further, if the insertion portion 124 can be fixed to the closing plate 123b, for example, the insertion portion main body 124b may be press-fitted into the communication port 121.

In the present embodiment, the insertion portion 124 is attached to the communication port 121 in each of the two diagonal members 12.

Then, in the drying step, as shown in FIGS. 8 (a) and 8 (b), the blower pipe 21 is inserted through the insertion portion 124 and the guide member 4, and the blower pipe 21 is passed from the communication port 121 to the support pipe 120. Insert inside.

This will be described more specifically. First, in the drying step, the guide member 4 is inserted into the insertion hole 124a of the insertion portion 124. Since the tapered portion 41 has flexibility, it is inserted into the insertion hole 124a of the insertion portion 124 in a folded state. Then, the shape of the tapered portion 41 is restored by arranging the entire tapered portion 41 in the strut pipe 120. As a result, the tapered portion 41 is arranged in the support tube 120, and the guide tube portion 40 is arranged in the insertion hole 124a of the insertion portion 124.

Then, it is inserted into the guide pipe portion 40 from the tip of the blower pipe 21. That is, the blower pipe 21 is inserted into the guide pipe portion 40 from the end portion to which the cap portion 24 is attached.

Further, the tip of the blower pipe 21 is arranged at a position corresponding to the other end of the support pipe 120. In the present embodiment, since the blower pipe 21 is inserted into the insertion hole 124a from the tip (the end to which the cap portion 24 is attached), the weight of the cap portion 24 makes it easy for the tip of the blower pipe 21 to be a support pipe. It can be moved to a position corresponding to the other end of 120.

Further, since one end of the cap portion 24 is rounded as described above, the blower pipe 21 is moved from the position corresponding to one end of the support pipe 120 to the position corresponding to the other end. When moving, it is possible to prevent one end of the cap portion 24 from being caught inside the support column 120. Therefore, the blower pipe 21 can be smoothly moved in the support pipe 120.

In the drying step according to the present embodiment, as shown in FIG. 9, one blower pipe 21 is inserted into the support pipe 120 of one of the diagonal members 12. Then, the other blower pipe 21 is inserted into the support pipe 120 of the other diagonal member 12. That is, after selecting a blower pipe 21 having a length corresponding to the length of the support pipe 120, the blower pipe 21 is inserted into the support pipe 120. In this way, in the drying step according to the present embodiment, the inside of the support column 120 of one diagonal member 12 is dried by the gas sent out from one blower pipe 21, and the gas sent out from the other blower pipe 21 is used. The inside of the strut pipe 120 of the other diagonal member 12 is dried.

When electric power is supplied from the generator 22 to the blower 20 to operate the blower 20, the gas sent out from the blower 20 flows into the connecting pipe 230 and then flows into each blower pipe 21 through the branch portion 231.

As described above, since one end of the blower pipe 21 is arranged at a position corresponding to the other end of the support pipe 120, it communicates with the outside from the other end side of the support pipe 120 which does not communicate with the outside. Gas can flow toward one end side. Then, the gas flowing to one end side of the support tube 120 is discharged from each protection tube 42 to the outside of the support tube 120.

Therefore, in the drying step, the inside of the strut tube 120 can be efficiently dried by smoothly discharging the gas inside the strut tube 120 by the gas injected into the other end side of the strut tube 120.

At this time, as shown in FIGS. 10A and 10B, while blowing gas from the blower pipe 21 into the support pipe 120, the position of the tip of the blower pipe 21 is set to one end of the support pipe 120. Move to the part side. In the present embodiment, after the position of the tip of the blower pipe 21 is shifted to one end side of the support pipe 120, the tip of the blower pipe 21 is fastened for a predetermined time. Then, after the predetermined time has elapsed, the position of the tip of the blower pipe 21 is further shifted to one end side of the support tube 120, and the tip of the blower pipe 21 is fastened again for the predetermined time. This operation is repeated until the tip of the blower pipe 21 reaches a position corresponding to one end of the support pipe 120.

That is, when the blower pipe 21 arranged at the position corresponding to the other end of the support pipe 120 is taken out from the inside of the support pipe 120, the position of the blower pipe 21 is shifted to one end side of the support pipe 120. , The blower pipe 21 is fastened in a state of being shifted to one end side of the support pipe 120, and this is repeated. As described above, in the drying step according to the present embodiment, the blower pipe 21 is taken out from the support pipe 120 by intermittently pulling out the blower pipe 21 from the support pipe 120.

Therefore, in the drying step, the inside of the support pipe 120 is dried by holding the blower pipe 21 that sends out the gas for a predetermined time at each position in the longitudinal direction of the support pipe 120.

Then, in the one diagonal member 12, after the tip of the one blower pipe 21 reaches the position corresponding to one end of the support pipe 120, the one blower pipe 21 is pulled out from the guide member 4. Similarly, in the other diagonal member 12, after the tip of the other blower pipe 21 reaches a position corresponding to one end of the support pipe 120, the other blower pipe 21 is pulled out from the guide member 4. Then, the guide member 4 is pulled out from the column pipe 120 of each diagonal member 12.

In the insertion step, the accommodating portions 30 of the corrosion preventive tool 3 are sequentially inserted into the strut pipe 120 from the insertion hole 124a, and the accommodating portions 30 are arranged side by side at intervals in the longitudinal direction of the strut pipe 120. ..

Then, as shown in FIG. 11, the connector 31 is detachably fixed to the closing plate 123b by the sealing plug 125. This will be described more specifically. When the connector 31 is detachably fixed to the closing plate 123b, the other end of the fixing line 310a of the connector 31 is inserted into the fixing hole 125a of the sealing plug 125.

Then, the other end of the connecting line 311a is fixed to the sealing plug 125. In order to fix the other end of the connecting line 311a to the sealing plug 125, for example, a sealing agent may be injected into the fixing hole 125a through which the other end of the connecting line 311a is inserted. Then, the insertion portion 125b is screwed into the insertion hole 124a. Therefore, the connecting line 311a is detachably fixed to the closing plate 123b by the insertion portion 124 and the sealing plug 125.

As a result, the generation of rust due to the inside of the strut pipe 120 of the diagonal member 12 becoming wet is suppressed, and the corrosion of the diagonal member 12 is prevented.

In the insertion step according to the present embodiment, as shown in FIG. 12, separate corrosion prevention tools 3 are installed on the support column 120 of one diagonal member 12 and the support column 120 of the other diagonal member 12. ..

As described above, according to the antiseptic construction method according to the present embodiment, the communication port 121 for communicating the inside and the outside of the support pipe 120 of the diagonal member 12 which is a steel tower member is formed, and therefore, the communication port 121 is formed through the communication port 121. The work can be performed on the inside of the support column 120. Further, in the antiseptic method according to the present embodiment, since the communication port 121 is formed in the closing plate 123b, the work can be performed inside the support pipe 120 while suppressing the decrease in the strength of the support pipe 120. Can be done.

In the drying step, the inside of the support pipe 120 is dried by injecting gas into the inside of the support pipe 120 from the communication port 121, so that the inside of the support pipe 120 can be made in a state where rust is unlikely to occur.

In the present embodiment, since a gap is formed between the guide pipe portion 40 of the guide member 4 and the outer peripheral portion of the blower pipe 21, gas is sent from the blower pipe 21 into the support pipe 120 and the gas is sent from the gap. By discharging, the gas inside the support column 120 can be smoothly discharged. Therefore, in the antiseptic method, the inside of the support pipe 120 can be efficiently dried.

Further, in the drying step, gas is injected into the inside of the support pipe 120 by the blower pipe 21 arranged at a position corresponding to the other end of the support pipe 120, so that the other end of the support pipe 120 does not communicate with the outside. Gas can flow from the side toward one end side communicating with the outside. Then, the gas flowing to one end side of the support tube 120 is discharged from each protection tube 42 to the outside of the support tube 120.

Therefore, in the drying step, the inside of the strut tube 120 can be efficiently dried by smoothly discharging the gas inside the strut tube 120 by the gas injected into the other end side of the strut tube 120.

Further, in the drying step, when the blower pipe 21 arranged at the position corresponding to the other end of the support pipe 120 is taken out from the inside of the support pipe 120, the position of the blower pipe 21 is set to one end side of the support pipe 120. The process of shifting the air pipe 21 and fastening the blower pipe 21 to one end side of the support pipe 120 is repeated. Therefore, when the blower pipe 21 is taken out from the inside of the support pipe 120, the support pipe 120 is stopped at each position between both ends of the support pipe 120 by fastening the blower pipe 21 that sends out the gas generated by the blower 20. The entire interior of the tube can be easily exposed to gas. Therefore, by drying the inside of the support tube 120 more reliably, it is possible to more reliably suppress the occurrence of rust inside the support tube 120.

Since one end of the cap portion 24 of the blower device 2 according to the present embodiment is rounded, the blower pipe 21 is moved from the position corresponding to one end of the support pipe 120 to the other end. When moving to the corresponding position, it is possible to prevent one end of the cap portion 24 from being caught inside the strut tube 120. Therefore, in the antiseptic method according to the present embodiment, the blower pipe 21 can be smoothly moved in the support pipe 120.

In the insertion step according to the present embodiment, in order to insert a corrosion inhibitor having at least one accommodating portion 30 for accommodating an anticorrosive agent for suppressing the generation of rust inside the strut tube 120 into the strut tube 120 from the communication port 121. The anticorrosive agent in the accommodating portion 30 inserted into the accommodating portion 30 suppresses the generation of rust inside the strut tube 120, thereby preventing the corrosion of the diagonal member 12 which is a steel tower member.

In the insertion step according to the present embodiment, a plurality of accommodating portions 30 which are aligned in the longitudinal direction of the strut pipe 120 and are connected to each other are inserted from the insertion hole 124a of the insertion portion 124 and the fixing hole 125a of the sealing plug 125 to the strut pipe 120. By arranging each of the plurality of accommodating portions 30 in the longitudinal direction inside the strut tube 120, it becomes easy to suppress the generation of rust over the entire length of the strut tube 120 in the longitudinal direction. As a result, corrosion of the diagonal member 12 which is a steel tower member is more reliably prevented.

Further, in the antiseptic method according to the present embodiment, since each of the plurality of accommodating portions 30 is connected to the sealing plug 125 via the connecting tool 31, each of the communication ports 121 of the support pipe 120 is sealed with the sealing plug 125. The accommodating portion 30 is fixed to the strut pipe 120, and each accommodating portion 30 is removed from the strut pipe 120 as the strut pipe 120 is removed from the communication port 121. Therefore, since each accommodating portion 30 can be easily fixed and removed from the support column 120, maintainability can be improved.

Further, in the antiseptic method, after each of the drying step and the insertion step is performed, a sealing step of sealing the communication port 121 of the support tube 120 with a sealing plug 125 is performed, so that moisture is absorbed inside the support tube 120 through the communication port 121. It is possible to suppress the entry. Therefore, since the dry state inside the strut tube 120 can be more reliably maintained, the occurrence of rust inside the strut tube 120 can be more reliably suppressed.

As described above, the antiseptic method for the tower member can take measures to prevent corrosion inside the tower member whose both ends are closed.

The antiseptic method according to the present invention is not limited to the above-mentioned one embodiment, and it goes without saying that various changes are made without departing from the gist of the present invention.

In the antiseptic construction method according to the above embodiment, the work target is the diagonal member 12 in which the openings at both ends are closed, but the work is not limited to this configuration. For example, the main pillar member 10 or the horizontal member 11 whose openings at both ends are closed may be the work target.

Further, in the antiseptic method, one end of the column pipe 120 is connected to the horizontal member 11 by the connecting portion 123, and the other end of the column pipe 120 is embedded in the foundation portion B (so-called root winding). The work target was the slanted member 12), but for example, one end of either end of the support pipe 120 was above the other end of either end of the support pipe 120. If the diagonal member 12 is installed in a state of being arranged in, either the diagonal member 12 in which each end of the support column 120 is connected to a separate main column member 10 or both ends of the support tube 120. The diagonal member 12 whose one end is connected to the horizontal member 11 and whose other end of both ends of the column pipe 120 is connected to the main column member 10 may be the work target.

Further, in the antiseptic method according to the above embodiment, the work target is the diagonal member 12 in which the openings at both ends of the support pipe 120 are closed by the connecting portion 123, but for example, only one end of the support pipe 120 is connected. The diagonal member 12 which is closed by the portion 123 and which is closed by burying the other end portion (the end portion which is not closed by the connecting portion 123) of the column pipe 120 in the foundation portion B may be the work target.

In the antiseptic method according to the above embodiment, two diagonal members 12 having different lengths are targeted for work, but for example, two diagonal members 12 having the same length may be targeted for work.

Further, in the antiseptic construction method according to the above embodiment, the strut pipe 120 and the connecting portion 123 which is a member for closing the openings at both ends of the strut pipe 120 are separate members of the diagonal member 12, but for example, A diagonal member 12 in which the support column 120 and a member that closes the openings at both ends of the support column 120 are integrated (for example, the diagonal member 12 that closes the openings by flattening both ends of the support tube 120). May be the work target.

In the above embodiment, in the closed plug 125, a fixing hole 125a penetrating the insertion portion 125b and the head 125c is formed, but the present invention is not limited to this configuration. For example, the sealing plug 125 does not have to have a fixing hole 125a as long as the connector 31 can be connected to the tip of the insertion portion 125b.

In the above embodiment, the blower device 2 includes two blower pipes 21, but is not limited to this configuration. For example, the blower device 2 may include one blower pipe 21 or may include three or more blower pipes 21. Further, when the blower device 2 includes a plurality of blower pipes 21, the blower pipes 21 may have different lengths or the same lengths.

In the above embodiment, each blower pipe 21 is connected to the blower 20 via the connecting portion 23, but the present invention is not limited to this configuration. For example, each blower pipe 21 may be directly connected to the blower 20. That is, the blower pipe 21 may be directly or indirectly connected to the blower 20.

In the above embodiment, in the cap portion 24, only one end portion is rounded, but the present invention is not limited to this configuration. For example, in the cap portion 24, the other end portion may also be rounded. In this way, even when the blower pipe 21 is pulled out from the support pipe 120 of the diagonal member 12, the cap portion 24 is prevented from being caught inside the support pipe 120.

In the above embodiment, in the corrosion prevention tool 3, the accommodating portions 30 are connected to each other by the intermediate connecting tool 311, but the configuration is not limited to this. For example, in the corrosion preventive tool 3, the accommodating portions 30 may be connected to each other. In the above embodiment, a plurality of accommodating portions 30 are arranged at equal intervals in the longitudinal direction of the strut pipe 120, but a portion where rust has already occurred in the strut pipe 120 or in the strut pipe 120. A plurality of accommodating portions 30 may be collected and arranged in a region near a portion where rust is likely to occur.

Although not particularly mentioned in the above embodiment, when the flange portions 120c of the two pipe materials 120a are directly connected in the support pipe 120, a sealing agent (for example, for example) is used between the flange portions 120c of the two pipe materials 120a. , Silicone resin), and a strip-shaped waterproof member having waterproof properties may be wound around each of the flange portions 120c of the two pipe materials 120a. By doing so, it is possible to prevent water from entering the column pipe 120 from between the flange portions 120c of the two pipe materials 120a.

Similarly, when connecting the flange portion 120c of the pipe material 120a and the flange portion 120f of the relay pipe 120d, a sealing agent (for example, silicon resin) is applied between the flange portion 120c and the flange portion 120f, and further. A strip-shaped waterproof member having waterproof properties may be wound around the flange portion 120c and the flange portion 120f. By doing so, it is possible to prevent water from entering the support column 120 from between the flange portion 120c and the flange portion 120f.

In the antiseptic method according to the above embodiment, the insertion step is performed after the drying step, but the present invention is not limited to this configuration. For example, in the antiseptic method, a drying step may be performed after the insertion step.

Although not particularly mentioned in the above embodiment, the preparatory step may be performed at the time of manufacturing the diagonal member 12, may be performed before assembling the diagonal member 12 transported to the work site, and further. , It may be performed on the existing diagonal member 12. That is, in the antiseptic method, it is sufficient that the preparatory step is performed before the drying step and the insertion step are performed.

In the above embodiment, the guide member 4 has a plurality of protective tubes 42, but the guide member 4 is not limited to this configuration. For example, the guide member 4 may have one protective tube 42. Further, the guide member 4 does not have to have the protective pipe 42 as long as a gap can be secured between the guide pipe portion 40 and the guide pipe portion 40.

Although not particularly mentioned in the above embodiment, when water is accumulated inside the support pipe 120, in the drying step, the drainage inside the support pipe 120 is drained prior to injecting gas into the inside of the support pipe 120. You may go.

Further, in the above embodiment, in the preparation step, the communication port 121 is formed in the connecting portion 123 of the diagonal member 12 (the closing plate 123b of one connecting portion 123), but the present invention is not limited to this configuration. For example, in the preparation step, the communication port 121 may be formed on the side surface of the support pipe 120.

As a reference example, an antiseptic method for a steel tower member having a column pipe 120 whose both ends are not closed will be described. Examples of the steel tower member whose both ends are not closed include a diagonal member 12 in which a plurality of column pipes 120 are connected in the longitudinal direction, and a main column member 10.

When the antiseptic method is applied to such an iron tower member, as a preparatory step, a communication port 121 is formed on the side surface of the support column pipe 120, and gas flows into the inside of the support column pipe 120 from the communication port 121 (drying step). A corrosion preventive tool 3 is inserted from the communication port 121 into the support tube 120 so that a plurality of accommodating portions 30 are lined up in the longitudinal direction of the support tube 120 (insertion step), and the communication port 121 is a sealing plug to which the connection tool 31 is connected. Seal with (sealing process). By performing the construction in this way, the antiseptic treatment can be applied to the steel tower member having the column pipe 120 whose both ends are not closed.

In the above embodiment, in the insertion step, the other end of the fixing line 310a of the connector 31 is inserted into the fixing hole 125a and fixed to the sealing plug 125, but the present invention is not limited to this configuration. For example, in the insertion step, as shown in FIG. 13, the other end of the fixing line 310a of the connector 31 may be fixed to the connector 126 attached to the tip of the insertion portion 125b of the solid plug 125.

1 ... Steel tower, 2 ... Blower, 3 ... Corrosion preventer, 4 ... Guide member, 10 ... Main pillar material, 11 ... Horizontal material, 12 ... Diagonal material, 20 ... Blower, 21 ... Blower pipe, 22 ... Generator, 23 ... Connection part, 24 ... Cap part, 30 ... Storage part, 31 ... Connection tool, 40 ... Guide pipe part, 41 ... Tapered part, 42 ... Protective pipe, 120 ... Support pipe, 120a ... Pipe material, 120b ... Tube part, 120c ... Flange part, 120d ... Relay pipe, 120e ... Relay cylinder part, 120f ... Flange part, 121 ... Communication port, 122 ... Sealing member, 123 ... Connecting part, 123a ... Main body part, 123b ... Closing plate, 124 ... Insertion Part, 124a ... Insertion hole, 124b ... Insertion part body, 124c ... Stop, 125 ... Seal, 125a ... Fixing hole, 125b ... Insertion, 125c ... Head, 126 ... Connector, 210 ... Scale, 230 ... Connection pipe, 231 ... Branch part, 300 ... Case, 301 ... Connection ring, 310 ... Fixing connection, 310a ... Fixed line, 310b ... Detachable part, 311 ... Intermediate connection, 311a ... Connection line, 311b ... Mounting part, B ... Basic part

Claims (5)

Prevents corrosion of a steel tower member provided with a columnar pipe having both ends in the longitudinal direction and a pair of closing portions that close each opening of the pillar pipe and are integrated or separate from the pillar pipe. This is an anticorrosive method for a steel tower member, in which a communication port for communicating the inside and the outside of the steel tower member is formed at one closing portion or one end of a support pipe, and the communication port is closed and the communication port is closed. A drying step of drying the inside of the support pipe by injecting gas into the inside of the support pipe from the communication port to which a detachable plug is provided at the communication port and the support pipe. Each of the insertion step, the drying step, and the insertion step of inserting a corrosion preventive device provided with at least one accommodating portion for accommodating an anticorrosive agent for suppressing the generation of rust inside the support tube from the communication port into the inside of the support column pipe. A method for preserving a steel tower member, comprising a sealing step of sealing the communication port of the support column pipe with the sealing plug. The corrosion inhibitor includes a plurality of the housing portions, each of which is arranged in the longitudinal direction of the support tube and connected to each other, and in the insertion step, each of the plurality of housing portions is provided. The anticorrosive method for a steel tower member according to claim 1, wherein the steel tower member is inserted into the inside of the support column pipe from the communication port. The antiseptic construction method for a steel tower member according to claim 2, wherein the corrosion preventive tool includes a connector to which the plurality of accommodating portions are connected, and the connector is connected to the sealing plug. In the drying step, when the inside of the support pipe is dried by a blower provided with a blower pipe that blows out gas supplied from the blower, the tip of the blower pipe inserted into the inside of the support pipe from the communication port is referred to as described above. Claims 1 to claim that the gas is injected into the inside of the support pipe from the blower pipe by arranging the support pipe on the side opposite to the one end portion and on the end side where the communication port is not provided. The antiseptic construction method for steel tower members according to any one of item 3. In the drying step, the air blower pipe whose tip is located on the side opposite to the one end of the pillar pipe and which is arranged on the end side where the communication port is not provided is installed from the inside of the pillar pipe. 4. When taking out, the position of the blower pipe is shifted to one end side of the support pipe, and the blower pipe is fastened in a state of being shifted to one end side of the support pipe. The antiseptic method for steel tower members described in.

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