JP2015183510A - Structure reinforcing member, filling method of filler, and manufacturing method of structure reinforcing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure reinforcing member which is simple in structure, and does not cause the leakage of a filler.SOLUTION: A rod material 2 is inserted into a pipe 1, and engagement members 31, 32 are movably arranged at both end parts of the rod material 2 so as to be movable between a closing position which abuts on end edges 11, 12 of the pipe 1 by a closing faces 310, 320, and in which a material filling space S is closed, and a separation position which is separated from the end edges 11, 12, and in which the material filling space S communicates with the outside, and the material filling space S is closed by the engagement members 31, 32 and the closing faces 310, 320 in a state that the filler M is filled into the material filling space S. Therefore, since the filler M is sealed in the material filling space S which is closed by the pipe 1, the rod material 2 and the engagement members 31, 32, the filler is not leaked to the outside. Furthermore, the sealing of the filler M into the material filling space S is enabled by a simple structure such as the pipe 1, the rod material 2 and the engagement members 31, 32.

Description

  The present invention relates to a steel material, another structure reinforcing member, a method for filling a component constituting the structure reinforcing member with a filling material, and a method for manufacturing the structure reinforcing member.

In the field of construction and civil engineering, steel materials are used to reinforce concrete members and other structures.
The steel material is a pipe-shaped hollow PC steel rod, a solid PC steel rod for reaction force inserted into the hollow PC steel rod and introduced with a compressive force, and one end of the solid PC steel rod. There is a PC steel bar unit that has a bottom nut that is in contact with and is screwed into a male threaded portion at one end of a hollow PC steel bar, and tension holding means that holds the compression force of the hollow PC steel bar (Patent Document 1). , 2).

In the PC steel bar units of Patent Documents 1 and 2, the tension holding means includes a nut screwed at one end to a male screw part formed at the other end of the hollow PC steel bar, and a solid inserted into the nut. It has a top that contacts the other end of the PC steel rod, and a hollow bolt that is screwed to the other end of the nut.
In this PC steel bar unit, if the hollow PC steel bar or tension holding means is damaged before being embedded and fixed in concrete, the hollow PC steel bar may jump out suddenly. The gap between the steel bar and the solid PC steel bar is filled with a viscous material. Due to the adhesive force of the viscous material, the force of the hollow PC steel bar trying to jump out is attenuated.

In the conventional examples of Patent Documents 1 and 2, in order to fill the gap between the hollow PC steel bar and the solid PC steel bar with a viscous material, one end opening of the hollow PC steel bar is rotated to the coating head into which the viscous material is fed. The hollow PC steel rod is rotated freely, and the solid PC steel rod is passed through the inside of the coating head and fed into the hollow PC steel rod.
The viscous material is filled in the gap between the solid PC steel bar and the hollow PC steel bar while being entangled with the solid PC steel bar.

In addition, as a steel material, there is a conventional example including a sheath embedded in a concrete structure, a steel rod inserted into the sheath, and a plate for connecting both ends of the steel rod to the sheath (Non-patent Document 1). .
In the conventional example of Non-Patent Document 1, a liquid grout is filled in a sheath through which a steel rod is penetrated.

In order to fill the grout, hose ports are formed in advance on the peripheral surfaces of both ends of the sheath, and grout hoses are respectively connected to these hose ports. The grout is filled into the space between the sheath and the steel rod from the grout hose connected to one end of the sheath. The grout filling operation is continued until the grout leaks from the grout hose connected to the other end of the sheath.
When the grout is filled, the grout filling is terminated, and leakage of the grout to the outside is prevented by bending a hose connected to the sheath.

Japanese Patent No. 3576400 Japanese Patent No. 4295844

Published by the Prestressed Concrete Contractors Association "PC Grout & Pregrout PC Steel Construction Manual 2013 Revised Pages 84-86" August 2013

In the conventional examples of Patent Documents 1 and 2, it is necessary to prevent leakage of the viscous material filled in the gap between the solid PC steel bar and the hollow PC steel bar. A cap nut placed on one end of the PC steel bar and a nut, piece and hollow bolt placed on the other end of the solid PC steel bar and the hollow PC steel bar are required, and the structure of the steel material is large. It becomes.
Further, in order to fill the gap between the solid PC steel bar and the hollow PC steel bar with the viscous material, the hollow PC steel bar has to be rotated, and the manufacturing equipment becomes large.

In the conventional example of Non-Patent Document 1, hose ports must be formed on the peripheral surfaces of both ends of the sheath for grout filling. By forming the hose port, the strength of the sheath itself may be reduced. Furthermore, after filling with grout, the hose on the grout injection side and the hose on the grout leakage side must be sealed with each other by being folded or the like in a state of being connected to the sheath. Bending the hose is not preferable in terms of appearance.
The hose may be removed and the hose port may be plugged separately, but this requires time and effort in the assembly process. Although it is conceivable to leave the hose removed and expose the hose port, rainwater will enter the sheath from the hose port, which may cause rust inside the sheath. Even if there is no risk of rainwater entering from the hose port, there is a problem of leakage when the material injected into the sheath is highly fluid.

  An object of the present invention is to provide a structure reinforcing member that has a simple structure and does not leak the filling material, a filling method of the filling material, and a manufacturing method of the structure reinforcing member.

  The structure reinforcing member of the present invention includes a pipe, a bar inserted into the pipe, engagement members provided at both ends of the bar, and the pipe and the bar. Filling material filled in a material filling space formed from one end to the other end of the pipe, and the engaging member has a blocking surface that abuts the edge of the pipe and closes the material filling space. The material filling space is movable between a closed position that contacts the end edge of the pipe and a spaced position that is spaced apart from the end edge of the pipe and communicates with the outside. .

In the invention of this configuration, the material filling space is closed by the closing surface of the engaging member in a state where the material filling space formed between the pipe and the other end of the pipe is filled with the filling material. Since the filling material is sealed in the space closed by the bar, the pipe and the engaging member, it does not leak to the outside.
In the present invention, the sealing of the filling material can be realized using a simple structure of a bar, a pipe, and an engaging member.

In the present invention, it is preferable that both end portions of the bar have male screw portions, and the engaging member has a nut member screwed into the male screw portion and having a flat locking surface on the outer periphery.
In this configuration, the material filling space can be easily closed by the engaging member simply by locking the locking surface with a tool or the like and screwing the nut member into the male screw portion.
And since the same structure is employ | adopted in the both ends of a bar, the number of parts can be reduced and the manufacturing cost of a structure reinforcement member can be made low.

In this invention, the structure provided with the valve mechanism which has the said engaging member and the edge of the said pipe and opens and closes the said material filling space outside is preferable.
In this configuration, the valve mechanism is opened by separating the closing surface of the engaging member from the edge of the pipe. The material filling space is filled with the filling material in a state where the valve mechanisms provided on both ends of the bar are opened. When the filling material is filled in the material filling space, the valve mechanism is closed by closing the end edge of the pipe with the closing surface of the engaging member.
Therefore, since the valve mechanism can be configured with a simple structure of the engaging member and the end edge of the pipe, the manufacturing cost of the structural body reinforcing member can be reduced.

  In the filling material filling method of the present invention, the filling material is filled into a material filling space formed between one end opening and the other end opening of the pipe between the pipe and the rod inserted into the pipe. In this filling method, engaging members are provided at both ends of the bar inserted into the pipe, and the engaging members are connected to the outside so that both end openings of the material filling space communicate with the outside. A material filling space opening step separated from both ends of the material filling step, a filling start step of filling the material filling space with the filling material from one end opening of the material filling space, and the filling material leaking from the other end opening of the material filling space Then, the bar is moved from one end to the other end, the one end edge of the pipe is brought into contact with the engagement member provided on one end of the bar, and the one end opening of the material filling space is opened. When blocked And a filling end step of closing the other end opening of the material filling space by bringing an engaging member provided at the other end of the bar into contact with the other end edge of the pipe. And

In the present invention, first, the material filling space opening step is carried out by separating the engaging members provided at both ends of the bar from the both ends of the pipe so that the openings at both ends of the material filling space communicate with the outside. To do. After that, a filling start process for filling the filling material from one end opening of the material filling space is performed. When the filling material is continuously filled and the material filling space is filled with the filling material, the filling material leaks from the other end opening of the material filling space. If this leakage is confirmed by visual inspection or the like, a filling end process is performed. In other words, the bar is held at the other end where the filling material is leaking, and the bar is moved from one end to the other end to provide engagement at one end of the pipe and one end of the bar. The members are brought into contact with each other, and the engaging member provided at the other end of the bar is brought into contact with the other end of the pipe to close the both ends of the material filling space.
As described above, in the present invention, when the leakage of the filling material from the other end opening of the material filling space is confirmed, the bar material held at the other end side is moved from one end toward the other end side, thereby filling the material. Since the space is closed, the filling work of the filling material can be easily performed.

In the present invention, both ends of the bar have male screw parts, the engaging member includes a nut member screwed into the male screw part, and the filling end step is performed in addition to the bar. A configuration in which a nut member provided at an end portion is screwed into a male screw portion at the other end portion of the bar is preferable.
In this configuration, when the filling material leaks from the other end opening of the material filling space, the nut member screwed into the other end side of the bar is screwed. Then, the nut member on the other end side comes into contact with the end edge on the other end side of the pipe, and the bar member moves from one end toward the other end side, and is screwed to one end side of the bar member. A nut member contacts the edge of the one end side of a pipe. As a result, the opening of both ends of the material filling space is closed by simply screwing the nut member on the other end into the male threaded portion of the bar, so that the closing operation can be easily performed.
And since the same structure is employ | adopted in the both ends of a bar, the arrangement | positioning relationship of the both ends of a structure reinforcement member is not limited. That is, since the direction in which the filling material is filled can be any one of both ends of the bar, the material filling operation can be easily performed.

In the present invention, it is preferable that the filling end step is configured to prevent the nut member provided at one end of the bar from rotating with respect to the pipe.
In this configuration, the nut member provided at one end of the bar is prevented from rotating with respect to the pipe, so when the nut member is screwed on the other end of the bar, the nut member rotates idle together with the bar. There is no.
Therefore, since the screwing of the nut member on the other end side of the bar is transmitted to the movement from one end of the bar to the other end, it is possible to easily close the opening at both ends of the material filling space.

The structure reinforcing member manufacturing method according to the present invention includes providing a pressure support member on a pipe, inserting a bar into the pipe, and providing an engagement member on both ends of the bar with the pipe interposed therebetween. A component assembly step, and a filling material filling step for filling a filling material into a material filling space formed between one end opening of the pipe and the other end opening between the pipe and the bar. A step of separating the engagement members provided at both ends of the bar from the both end edges of the pipe so that both end openings of the material filling space communicate with the outside; A filling start step of filling the material filling space with the filling material from one end opening of the filling space, and when the filling material leaks from the other end opening of the material filling space, the bar is directed from one end to the other end side. The one end edge of the pipe and the engaging member provided on one end side of the bar are brought into contact with each other to close one end opening of the material filling space and provided at the other end of the bar And a filling end step of closing the other end opening of the material filling space by bringing the engaged member into contact with the other end edge of the pipe.
In this invention, since the material filling step similar to that described above is performed after the component assembling step, the structure reinforcing member in which the filling material is filled in the material filling space can be easily manufactured.

Sectional drawing of the structure reinforcement member concerning 1st Embodiment of this invention. (A) (B) is a figure for demonstrating the manufacturing method of a structure reinforcement member. (C) to (E) are views for explaining a method for manufacturing a structural body reinforcing member. Sectional drawing of the structure reinforcement member concerning 2nd Embodiment of this invention. (A) (B) is sectional drawing which shows the principal part of the modification of this invention.

Embodiments of the present invention will be described with reference to the drawings. Here, in description of each embodiment, the same component is attached | subjected with the same code | symbol and description is abbreviate | omitted.
[First Embodiment]
1 to 3 show a first embodiment. 1st Embodiment illustrates steel materials as a structure reinforcement member.
[Structure of steel materials]
FIG. 1 shows the overall structure of a steel material according to the first embodiment. The steel material of 1st Embodiment is used in order to reinforce the concrete structure which is not shown in figure and other structures, and is installed in the said structure.
In FIG. 1, steel is provided at a pipe 1, a bar 2 inserted into the pipe 1, an engagement member 31 provided at one end of the bar 2, and the other end of the bar 2. Engaging members 32 and pressure support members 41 and 42 provided on both ends of the pipe 1, respectively.
A material filling space S is formed between one end of the pipe 1 and the other end between the inner periphery of the pipe 1 and the outer periphery of the bar 2. The material filling space S is filled with a filling material M, for example, a rust preventive material having fluidity.

The pipe 1 is a steel pipe formed of a high-strength steel material, and both ends thereof have end edges 11 and 12 parallel to a plane orthogonal to the axial direction.
A position in the material filling space S that coincides with the end edge 11 of the pipe 1 is defined as one end opening S1, and a position that coincides with the end edge 12 is defined as the other end opening S2.
The bar 2 is a solid high-strength steel bar, and is provided with a round shaft-shaped central portion 20, a male screw portion 21 provided on one end side of the central portion 20, and the other end side of the central portion 20. And a male screw portion 22.
The male screw portion 21 protrudes from one end edge 11 of the pipe 1 from its midpoint to the tip.
It protrudes from the end edge 12 of the pipe 1 from the middle position of the male screw portion 22 to the tip.

The pipe 1 may have a strength higher than that of the bar 2, may be the same, or may have a lower strength.
Strength of the pipe 1, can be set appropriately, for example, either the yield point or 0.2% proof stress exceeds 390 N / mm ^2, or tensile strength may be used to set to exceed 490 N / mm ^2. In the present embodiment, "high strength", yield point or 0.2% proof stress exceeds 390 N / mm ² or, or tensile strength refers to exceed 490 N / mm ^2.

The engaging member 31 has a closing surface 310 that contacts the end edge 11 of the pipe 1 and closes the one end opening S1 of the material filling space S.
The engaging member 31 is a nut member that is screwed into the male threaded portion 21, and is separated from the end edge 11 of the pipe 1 and a closed position (see solid line) that contacts the end edge 11 of the pipe 1 and closes the one end opening S <b> 1. Thus, the material filling space S can be moved between a remote position (see an imaginary line) communicating with the outside.
Similarly, the engaging member 32 has a closing surface 320 that contacts the end edge 12 of the pipe 1 and closes the material filling space S. The engaging member 32 is a nut member that is screwed into the male threaded portion 22, and comes from a closed position (see solid line) that contacts the end edge 12 of the pipe 1 and closes the other end opening S <b> 2 and the end edge 12 of the pipe 1. The material filling space S can be moved between a separated position (see an imaginary line) that communicates with the outside.
In the present embodiment, the first valve mechanism V1 that opens and closes the material filling space S to the outside is constituted by the engaging member 31 and the end edge 11 of the pipe 1. A second valve mechanism V2 that opens and closes the material filling space S to the outside is constituted by the engaging member 32 and the end edge 12 of the pipe 1.

The outer peripheries of the engaging members 31 and 32 have substantially the same dimensions as the outer perimeter of the pipe 1, and the outer peripheral shape thereof is, for example, a hexagon or an octagon. That is, the outer peripheries of the engaging members 31 and 32 are formed from hexagonal nuts or octagonal nuts that have a plurality of planar locking surfaces 34 and are formed through the female screw portion 30. The engagement members 31 and 32 are screwed in using a tool suitable for the locking surfaces 34.
The axial lengths of the engaging members 31 and 32 may be longer than the lengths of the male screw portions 21 and 22 protruding from the end edges 11 and 12 of the pipe 1 (see FIG. 1), but may be the same. Or it may be short.
In the present embodiment, the blocking surfaces 310 and 320 are formed smoothly in order to ensure a sealed state so that the filling material does not leak between the end edges 11 and 12 of the pipe 1. In addition, in order to ensure the sealing performance between the closing surfaces 310 and 320 and the end edges 11 and 12, packings made of rubber, synthetic resin, or the like are provided on the end edges of the engaging members 31 and 32, and the packing surfaces are arranged. It is good also as the obstruction | occlusion surface 310,320.

The pressure support members 41 and 42 support pressure from a structure (not shown).
One of the pressure support members 41, 42 is a support nut that is screwed into a male screw 101 formed on the outer peripheral surface of one end of the pipe 1, and the other pressure support member 42 is a pipe 1 is a supporting nut that is screwed into a male screw 102 formed on the outer peripheral surface of the other end side of 1.

Next, the manufacturing method of the steel material of 1st Embodiment is demonstrated based on FIG.2 and FIG.3.
[Production method of steel]
[Parts assembly process]
The pressure support member 41 is screwed into the male screw 101 of the pipe 1, and the pressure support member 42 is screwed into the male screw 102. Then, the bar 2 is inserted into the pipe 1, and the engaging members 31 and 32 are screwed into portions of the male screw portions 21 and 22 of the bar 2 that protrude from the end edges 11 and 12 of the pipe 1.
[Filling process]
A filling material M is filled in the material filling space S between the pipe 1 and the bar 2 and formed from the one end opening S1 to the other end opening S2 of the pipe 1 in the following procedure.

[Engaging member separation step]
As shown in FIG. 2A, by adjusting the screwing amounts of the male screw portions 21 and 22 of the bar 2 of the engaging members 31 and 32, the engaging members 31 and 32 are opened at one end opening S1 of the material filling space S. And the other end opening S2 is separated from the end edges 11 and 12 of the pipe 1 so as to communicate with the outside. In this embodiment, the engagement member 31 screwed to one end side of the bar 2 is not rotated between the engagement member 31 and the one end side of the pipe 1 so that the engagement member 31 does not idle with respect to the pipe 1. Lock with a stop member. The anti-rotation member is configured to prevent the engagement member 31 from rotating with respect to the pipe 1 and to allow proximity to and separation from the pipe 1. For example, the engagement member 31 is fitted with a cap (not shown) to support pressure. It is possible to employ a configuration in which a pin (not shown) extending in parallel with the bar 2 is provided on the member 41 and this pin is inserted through a hole formed in the cap.

[Filling start process]
As shown in FIG. 2B, the filling material M is filled from the one end opening S1 of the material filling space S. Therefore, the filling material supply device 5 is connected to one end side of the pipe 1.
The filling material supply device 5 includes a cup-shaped case 51, a supply source (not shown) that supplies the filling material to the case 51, and a hose 52 that communicates between the supply source and the case 51.
The case 51 has a cylindrical portion 53 whose opening end is in contact with the end edge of the pressure support member 41, and a bottom portion 54 attached to the end of the cylindrical portion 53. The open end of the cylindrical portion 53 is sealed to the end edge of the pressure support member 41 with a seal member (not shown). The amount of screwing into the male screw 101 is adjusted so that the end surface of the pressure support member 41 coincides with the end edge 11 of the pipe 1.

A communication passage 53 </ b> A that communicates with the hose 52 is formed in the upper portion of the tubular portion 53. A hose 52 is detachably attached to the communication path 53A.
A hole 53 </ b> B for extracting the filling material stored in the case 51 is formed in the lower portion of the cylindrical portion 53. A lid member 55 is detachably provided in the hole 53B.
In a state where the lid member 55 is attached to the cylindrical portion 53, the filling material M is supplied from the supply source toward the inside of the case 51. Then, the filling material M fills the inside of the case 51 and is sent to the material filling space S from the one end opening S1. The filling material M is sent through the material filling space S from the one end opening S1 toward the other end opening S2.

[Filling end process]
As shown in FIG. 3C, when the filling material M reaches the other end opening S2 of the material filling space S, the filling material M leaks from the other end opening S2. When the worker visually confirms the leakage of the filling material M from the other end opening S2, the one end opening S1 and the other end opening S2 of the material filling space S are closed.
Therefore, as shown in FIG. 3D, the engaging member 32 screwed into the male screw portion 22 on the other end side of the bar 2 is screwed. Then, the closing surface 320 of the engaging member 32 comes into close contact with the other end edge 12 of the pipe 1 and the bar 2 is moved in the P direction from one end to the other end side. Note that the rod member 2 moves along the axial direction by the anti-rotation member without idling.
The engaging member 31 screwed into the male screw portion 21 on one end side of the bar 2 moves together with the bar 2. The closing surface 310 of the engaging member 31 is in close contact with the end edge 11 of the pipe 1. Thereby, the one end opening S1 and the other end opening S2 of the material filling space S are closed.

As shown in FIG. 3E, when the one end opening S1 and the other end opening S2 of the material filling space S are closed, the supply of the filling material M from the supply source to the case 51 is stopped, and the hole 53B The lid member 55 is removed and the filling material M stored in the case 51 is discharged to the outside through the hole 53B. When the filling material M stored inside the case 51 is discharged to the outside, the case 51 is removed, and the engaging member 31 to which the filling material M is adhered is washed as necessary.
The steel material manufactured in this way is installed in the on-site structure. In this embodiment, before the filling material S is filled with the filling material, the steel material assembled in the component assembling process may be installed in the on-site structure and the filling process may be performed on the spot.

Accordingly, the following effects can be achieved in the first embodiment.
(1) The bar 2 is inserted into the pipe 1, the engaging members 31 and 32 are brought into contact with both ends of the bar 2, and the end edges 11 and 12 of the pipe 1 are brought into contact with the closing surfaces 310 and 320, respectively. The material filling space S is filled with a filling material M so as to be movable between a closing position for closing the filling space S and a separation position where the material filling space S is separated from the edges 11 and 12 and communicates with the outside. In this state, the material filling space S was closed by the closing surfaces 310 and 320 of the engaging members 31 and 32. Therefore, since the filling material M is sealed in the material filling space S closed by the pipe 1, the bar 2, and the engaging members 31, 32, it does not leak to the outside. Moreover, the sealing of the filling material M to the material filling space S can be realized by a simple structure of the pipe 1, the bar 2, and the engaging members 31 and 32.

(2) The engaging members 31 and 32 are nut members that are screwed into the male screw portions 21 and 22 disposed at both ends of the bar 2 and have a flat locking surface 34 on the outer periphery. The material filling space S can be easily closed only by screwing these nut members into the male screw portions 21 and 22.

(3) Since the engaging members 31 and 32 have the same structure at both ends of the bar 2, the number of parts can be reduced and the manufacturing cost of the steel can be reduced.

(4) Since the first and second valve mechanisms V1 and V2 are configured with a simple structure of the engaging members 31 and 32 and the edges 11 and 12 of the pipe 1, the manufacturing cost of the steel material can be reduced.

(5) In order to fill the material filling space S formed from one end opening S1 to the other end opening S2 of the pipe 1 with the filling material M, first, the engaging members 31, 32 are moved from the end edges 11, 12 of the pipe 1. The both end openings S1 and S2 of the material filling space S are separated from each other so as to communicate with the outside. Thereafter, the material filling space S starts to be filled with the filling material M from the one end opening S1, and when the filling material M leaks from the other end opening S2 of the material filling space S, the bar 2 is moved from one end to the other end side. The one end 11 of the pipe 1 and the engagement member 31 provided on one end side of the bar 2 are brought into contact with each other to close the one end opening S1, and the engagement provided on the other end of the bar 2 The joint member 32 is brought into contact with the other edge 12 of the pipe 1 to close the other end opening S2 of the material filling space S and the filling of the filling material M is completed. Therefore, when the leakage of the filling material from the other end opening S2 of the material filling space S is confirmed, the material filling space S is simply moved by moving the bar 2 held on the other end side from one end to the other end side. The filling operation of the filling material M can be easily performed.

(6) By screwing the engaging member 32 provided at the other end of the bar 2 into the male threaded portion 22 of the bar 2, the other end side of the pipe 1 is engaged with the engaging member 32 at the other end. While the end edge is closed, the bar 2 moves from one end toward the other end, and the one end 11 of the pipe 1 is connected by the engaging member 31 screwed to one end of the bar 2. Closed. As a result, the material filling space S can be easily closed. In addition, since the same structure is adopted at both ends of the bar 2, the direction in which the filling material M is filled can be any one of both ends of the bar. It can be done easily.

(7) Since the engaging member 31 provided at one end of the bar 2 is configured to be prevented from rotating with respect to the pipe 1, the screwing of the engaging member 32 on the other end side of the bar 2 is the bar 2. Therefore, the material filling space S can be easily closed.

(8) In order to manufacture a steel material, the pressure support members 41 and 42 are provided on the pipe 1, the bar material 2 is inserted into the pipe 1, and the pipe 1 is sandwiched between both ends of the bar material 2. Since the parts assembling process is performed by providing the members 31 and 32 and then the above-described filling process is performed, the steel material in which the filling material M is filled in the material filling space S can be easily manufactured.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
The second embodiment is different from the first embodiment in the configuration of the bar and the engaging member, and the other configurations are the same as those in the first embodiment.
[Structure of steel materials]
FIG. 4 shows the overall structure of the steel material according to the second embodiment.
In FIG. 4, the steel materials are the pipe 1 described above, the bar 6 inserted into the pipe 1, the engagement member 71 provided at one end of the bar 6, and the other end of the bar 6. The engaging portion 62 provided and the pressure support members 41 and 42 described above are provided.
A material filling space S is formed between one end of the pipe 1 and the other end between the inner periphery of the pipe 1 and the outer periphery of the bar 6. The material filling space S is filled with a filling material M.

The bar 6 is a solid high-strength steel bar, and is provided with a round shaft-shaped central portion 20, a fitting portion 61 provided on one end side of the central portion 20, and the other end side of the central portion 20. And a fitting portion 62.
In these fitting portions 61 and 62, a convex portion 60 </ b> B having an outer cross-section arc shape is formed in the middle of the shaft portion 60 </ b> A having the same diameter as the central portion 20. The outer diameter dimension of the convex portion 60 </ b> B is smaller than the inner diameter dimension of the pipe 1.
As for the fitting part 61, the convex-shaped part 60B protrudes from the edge 11 of the pipe 1 at least.
As for the fitting part 62, the convex-shaped part 60B protrudes from the edge 12 of the pipe 1 at least.
The strength relationship between the pipe 1 and the bar 6 is the same as the strength relationship between the pipe 1 and the rod 2 of the first embodiment.

The engaging member 71 is a cylindrical member having a closing surface 310 that closes one end edge 11 of the pipe 1.
The engaging member 71 has an inner peripheral surface 70A facing the outer peripheral surface of the shaft portion 60A, and a concave portion 70B into which the convex portion 60B of the fitting portion 61 is fitted. In a state in which the convex portion 60B of the fitting portion 61 and the concave portion 70B of the engaging member 71 are fitted, the bar 6 closes the end edge 11 of the pipe 1 with the closing surface 310 (solid line). See). In the state in which the inner peripheral surface 70A of the engaging member 71 is inserted into the tip portion of the shaft portion 60A from the convex portion 60B, the bar 6 is separated from the end edge 11 of the pipe 1 by the closing surface 310. Thus, the material filling space S is in a separated position (see an imaginary line) communicating with the outside. That is, the engagement member 72 is movable with respect to the bar 6 between the closed position and the separated position.
Similarly, the engaging member 72 is a cylindrical member having a closing surface 320 that closes the other end edge 12 of the pipe 1, and the specific structure thereof is the same as that of the engaging member 71.

In the present embodiment, a first valve mechanism V1 that opens and closes the material filling space S from the engaging member 71 and one end edge 11 of the pipe 1 is configured. A second valve mechanism V2 that opens and closes the material filling space S to the outside is constituted by the engaging member 72 and the other end edge 12 of the pipe 1.
The outer peripheries of the engaging members 71, 72 have substantially the same dimensions as the outer perimeter of the pipe 1.
The axial lengths of the engaging members 71 and 72 may be substantially the same as the lengths of the fitting portions 61 and 62 protruding from the end edges 11 and 12 of the pipe 1. Alternatively, it may be formed short.

[Production method of steel]
The manufacturing method of the steel material in 2nd Embodiment is demonstrated.
[Parts assembly process]
First, the pressure support member 41 is screwed into the male screw 101 of the pipe 1, and the pressure support member 42 is screwed into the male screw 102. Then, the bar 6 is inserted into the pipe 1, and the engaging members 71 and 72 are engaged with the fitting portions 61 and 62 of the bar 6.
[Filling process]
A filling material M is filled in a material filling space S formed between the pipe 1 and the bar 6 and formed from one end opening S1 to the other end opening S2 of the pipe 1 in the following procedure.

[Engaging member separation step]
The shaft portion 60A of the fitting portion 61 on one end side of the bar 6 and the concave portion 70B of the engaging member 71 are fitted together, and only on the tip side of the shaft portion 60A of the fitting portion 62 on the other end side. The engaging member 72 is engaged. Here, the axial position of the bar 6 is adjusted, and the engagement members 71 and 72 are connected to the end 11 of the pipe 1 so that the one end opening S1 and the other end opening S2 of the material filling space S communicate with the outside. , 12 are separated from each other. Further, similarly to the first embodiment, the engagement member 71 screwed to one end side of the bar 6 is prevented from spinning around the pipe 1.

[Filling start process]
Similarly to the first embodiment, the hose 52 of the filling material supply device 5 is connected to one end of the pipe 1 and the filling material M is supplied from the supply source toward the inside of the case 51 (see FIG. 2). Then, the filling material M fills the inside of the case 51 and is sent to the material filling space S from the one end opening S1.
[Filling end process]
When the filling material M reaches the other end opening S2 of the material filling space S and the leakage of the filling material M from the other end opening S2 is confirmed, the one end opening S1 and the other end opening S2 of the material filling space S are connected. Block. Therefore, the engaging member 62 is pulled so that the tip of the fitting portion 62 of the bar 6 is pulled using a tool or the like (not shown), and the convex portion 60B of the fitting portion 62 is fitted to the concave portion 70B of the engaging member 72. 72 is pushed in. Then, the closing surface 320 of the engaging member 72 is in close contact with the other end edge 12 of the pipe 1, and the closing surface 310 of the engaging member 71 is in close contact with the end edge 11 of the pipe 1. Thereby, the one end opening S1 and the other end opening S2 of the material filling space S are closed.

Therefore, in the second embodiment, the same effects as the first embodiment (1) (3) to (5) (8) can be obtained, and the following effects can be obtained.
(9) The engaging members 71 and 72 have an inner peripheral surface 70A facing the outer peripheral surface of the shaft portion 60A of the bar 6 and a concave portion 70B into which the convex portion 60B of the bar 6 is fitted. Therefore, it is possible to switch from the separated position to the closed position by simply pushing the engaging members 71 and 72 into the bar 6. Therefore, when the material filling space S is closed, a detent member is not necessary.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in each of the above embodiments, the steel material is the pipe 1, the bars 2 and 6 inserted into the pipe 1, and the engaging members 31 and 71 provided at one end of the bars 2 and 6, Engaging members 32 and 72 provided at the other ends of the bars 2 and 6, between the inner periphery of the pipe 1 and the outer periphery of the bars 2 and 6, from one end of the pipe 1 to the other end. Although the formed material filling space S is filled with the filling material M, the structure of the steel material of the present invention is not limited to this. For example, the steel material of the present invention has a hollow PC steel rod, a solid PC steel rod for reaction force inserted inside the hollow PC steel rod, and a bottom surface on which one end of the solid PC steel rod abuts. A PC steel bar unit including a cap nut screwed into a male thread portion at one end of the hollow PC steel bar, and a tension holding means while holding the compressive force of the hollow PC steel bar.

Furthermore, in 1st Embodiment, although the outer peripheral shape of the engaging members 31 and 32 was made into the hexagon shape and octagon shape which have two or more planar locking surfaces 34, in this invention, it is not limited to this. .
For example, as shown in FIG. 5A, the engaging member 311 provided at one end of the bar 2 is a round nut, and a plurality of locking holes 311A are formed in the end surface along the axial direction. Good. In order to threadably engage the engaging member 311 with the male screw portion 21, a tool 8 having a locking pin 81 that locks in the locking hole 311A is used. The tool 8 includes a flat plate portion 82 provided with a locking pin 81 and a gripping portion 83 connected to the flat plate portion 82. In a state where the locking pin 81 is inserted into the locking hole 311 </ b> A of the engaging member 311, the tool 8 is rotated while holding the grip portion 83.

Further, as shown in FIG. 5B, the engaging member 312 provided at one end of the bar 2 is a round nut, and a groove 312A having a hexagonal inner periphery is formed at the center of this end face. Good. The groove 312 </ b> A is concavely and convexly fitted to the hexagonal columnar tool 9, and the engaging member 312 is screwed into the male screw portion 21 by rotating the tool 9 directly by hand or using another tool. . A hole 1 is formed in the tool 9 for insertion of the tip of the male screw portion 21.
5A and 5B, the engagement member provided at the other end of the bar 2 may be the engagement member 32 of the first embodiment, and instead of the engagement member 32, The engaging members 311 and 312 may be used.

Moreover, in each said embodiment, although the structure of the engaging members 31, 32, 71, and 72 was made the same at the both ends of the bar | burrs 2 and 6, a different structure may be sufficient in this invention. For example, the engaging members 31 and 71 on one end side of the bars 2 and 6 may be block members, and the block members may be joined to the ends of the bars 2 and 6 by welding or the like.
A plate may be used instead of the nuts for the pressure support members 41 and 42. However, as in the above-described embodiments, by using a nut, the pressure support members 41 and 42 can be moved to coincide with the end edge 11 of the pipe 1 when filling the material, and the case 51 can be easily attached. Furthermore, when installing the steel material in the structure, it can be changed to an appropriate position with respect to the pipe 1, so that convenience is high.

In the present invention, the bar 2 may have a hollow structure.
Further, the operator has performed the work of confirming that the filling material M leaks from the other end opening S2 of the material filling space S. However, in the present invention, a sensor is provided and a detection signal of this sensor is received. A device for automatically screwing the engaging member 32 may be used.
Moreover, in each said embodiment, although steel materials were illustrated as a structure reinforcement member, each member which comprises the structure reinforcement member of this invention is not limited to steel materials. For example, a part or all of each member constituting the structural body reinforcing member may be formed not only of steel, but also from non-ferrous metals, organic materials such as synthetic resins, inorganic materials such as glass and ceramics, or epoxy And a composite material of glass fiber and other composite materials.

  INDUSTRIAL APPLICATION This invention can be utilized for the steel material used in order to reinforce a concrete member and other structures, and another structure reinforcement member.

  DESCRIPTION OF SYMBOLS 1 ... Pipe, 2, 6 ... Bar material, 11, 12 ... End edge, 21, 22 ... Male thread part, 31, 32, 71, 72 ... Engagement member, 310, 320 ... Closure surface, M ... Filling material, S ... Material filling space, S1 ... Opening at one end, S2 ... Opening at the other end

Claims (7)

A pipe, a bar inserted into the pipe, engaging members provided at both ends of the bar, and between the pipe and the bar, from one end of the pipe to the other A filling material filled in the formed material filling space,
The engaging member has a closing surface that contacts the end edge of the pipe and closes the material filling space, and is separated from the closing position of the pipe and the end edge of the pipe. A structure reinforcing member, characterized in that the material filling space is movable between a remote position communicating with the outside. In the structural body reinforcing member according to claim 1,
Both ends of the bar have male screw parts, and the engaging member has a nut member screwed into the male screw part and having a flat locking surface on the outer periphery. Element. In the structural body reinforcing member according to claim 1 or 2,
A structure reinforcing member, comprising: a valve mechanism that includes the engaging member and an end edge of the pipe and opens and closes the material filling space. A filling method for filling a filling material into a material filling space between a pipe and a bar inserted into the pipe and formed from one end opening of the pipe to the other end opening,
Engagement members are provided at both ends of the bar inserted into the pipe, and these engagement members are separated from the both ends of the pipe so that both end openings of the material filling space communicate with the outside. Filling space opening process;
A filling start step of filling the material filling space with a filling material from one end opening of the material filling space;
When the filling material leaks out from the other end opening of the material filling space, the engagement member provided on one end edge of the pipe and one end side of the rod member by moving the rod member from one end to the other end side. Is closed to close one end opening of the material filling space, and an engaging member provided at the other end of the bar is brought into contact with the other end edge of the pipe so A filling end step of closing the end opening; and a filling material filling method comprising: The filling material filling method according to claim 4,
Both ends of the bar have male screw portions, and the engaging member includes a nut member screwed into the male screw portion,
The filling end step is performed by screwing a nut member provided at the other end of the bar into a male screw part at the other end of the bar. The filling material filling method according to claim 5,
In the filling end step, a nut member provided at one end of the bar is prevented from rotating with respect to the pipe. A component assembly step of providing a pressure support member on the pipe, inserting a bar into the pipe, and providing an engagement member across the pipe at both ends of the bar,
A filling material filling step of filling a filling material into a material filling space formed between one end opening of the pipe and the other end opening between the pipe and the bar;
The filling step is an engagement member separation step of separating engagement members respectively provided at both ends of the bar from the both ends of the pipe so that both end openings of the material filling space communicate with the outside, respectively.
A filling start step of filling the material filling space with a filling material from one end opening of the material filling space;
When the filling material leaks out from the other end opening of the material filling space, the engagement member provided on one end edge of the pipe and one end side of the rod member by moving the rod member from one end to the other end side. Is closed to close one end opening of the material filling space, and an engaging member provided at the other end of the bar is brought into contact with the other end edge of the pipe so And a filling end step of closing the end opening. A method for manufacturing a structural body reinforcing member.

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