JP3037442B2 - Structural material and joining method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structural material constituting columns and beams of a building, and more particularly to a technical field of joining a structural material made of concrete or a similar material. Applications of this structural material include structural materials such as general buildings, bridges, earth retaining structures, piles, and electric poles.

BACKGROUND ART In general, buildings in the fields of civil engineering and architecture are mainly made of materials such as wood, reinforced concrete, and steel frames. In particular, the joints such as beams and beams, and beams and columns are complicated in structure, and are subjected to the most stress. Therefore, in order to finish with sufficient quality, manual work is inevitably increased. In particular, in the case of cast-in-place concrete, construction of this joint requires both manual and skilled labor. However, recently, due to labor shortage, the aging of skilled workers, and the cost consciousness of finishing cheaply, there are many buildings that have been constructed sparsely. On the other hand, as reported in the Great Hanshin Earthquake in January 1995, buildings built a while ago had 30- 40% of buildings in Kobe, despite having enough skilled workers at the time. Has collapsed due to construction mistakes. Thus, the quality of the buildings currently being built is apparently degraded as they are made by skilled workers at the level below that level.

In addition to the above-mentioned deterioration in quality, the design of the building itself has recently been simplified. For this reason, high-grade buildings such as those found in medieval European architecture have not been seen, and urban spaces have become scrambled. If the design of the building is not good like this, it will not be denied that the mind and mind of the people will be lost, the cultural level will be reduced, and the city will be ruined.

Therefore, according to the present invention, it is possible to easily join beams such as beams made of concrete or beams and columns without being a skilled worker,
Further, it is an object of the present invention to provide a structural material that enables a high-quality building and also provide a joining method thereof.

DISCLOSURE OF THE INVENTION In order to achieve the above object, a structural material according to the present invention is a structural material used for a column or a beam, and is formed of a hollow tube made of concrete or a material similar thereto, and has an irregular surface on its inner surface. It is characterized by having. And the unevenness | corrugation of an inner surface may be formed in the shape of a spiral, and also the state where the middle frame is buried in the inner surface may be sufficient. Also,
An attachment portion for attaching an accessory may be provided on the outer surface, or irregularities in design may be provided. Further, a structure in which a plurality of hollow tubes are integrated in a bundled state, or a structural material in which some or all of the hollow tubes are cut out may be used. Further, a reinforcing plate may be provided on the inner surface. Further, a decorative material or a structural reinforcing material may be partially or entirely used on the surface of the structural material. Further, an exhaust path may be provided in the uneven portion on the inner surface of the hollow tube.

And, the joining method according to the present invention is a method of joining structural materials having the above-described structure. After facing the ends of two or more of the structural materials, the joining method is applied to the hollow portion of the structural material to be joined. It is characterized by injecting and solidifying a filler. Alternatively, a cover member is fixedly attached to the vicinity of the end, and after facing the ends of at least two or more of the structural materials to which the cover member is attached, a filler is injected into a space defined by the cover member. Then, the structural materials are joined to each other by solidification. In the latter joining method, it is preferable to use a lid member having an elastic body attached to the periphery.

Further, another joining method according to the present invention is a method for joining structural materials having the above-described structure, wherein a bag is attached near an end of one structural material to be joined, and this structural material is After facing the ends of the other structural material, the filler is injected into the bag and expanded to join the structural materials together. In addition, as a method of installing the bag, the bag is fixed to the other end of the reinforcing member or the lid member,
In order to stop the tip of the expanding bag at a predetermined position, it is preferable to restrict the extension of the bag via a lid member, a reinforcing material or a restraining material. Further, a connection frame may be provided at the other end of the bag. Further, when joining the structural material to be joined to the joint material, after abutting the structural material and the joint material, using any of the joining methods described above, filling and joining the filler material. do it. In addition, using a structural material that has an exhaust path and an exhaust hole connected to the exhaust path in the uneven portion on the inner surface of the hollow tube, when filling material is injected into the structural material, the air inside the structural material is exhausted. It is more preferable to exhaust air through an exhaust hole.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first embodiment of a structural material according to the present invention.

FIG. 2 is a perspective view showing an example of a middle frame used when manufacturing the structural material of FIG.

 FIG. 3 is a perspective view showing another example of the middle frame.

FIG. 4 is a sectional view showing a first modification of the structural material of the first embodiment.

FIG. 5 is a sectional view showing a second modification of the structural material of the first embodiment.

FIG. 6 is a sectional view showing a third modification of the structural material of the first embodiment.

FIG. 7 is a sectional view showing a fourth modification of the structural material of the first embodiment.

FIG. 8 is a cross-sectional view showing an example of a structural material in which a medium frame is buried in the second embodiment.

FIG. 9 is a cutaway perspective view showing another example of the structural material in which the middle frame is buried.

FIG. 10 is a cross-sectional view showing another example of a structural material in which a medium frame and a surface material are buried.

 FIG. 11 is a sectional view showing a third embodiment of the structural material.

FIG. 12 is a perspective view showing an example in which a mounting member for mounting an accessory is provided outside the structural material according to the fourth embodiment.

FIG. 13 is a perspective view showing an example of a structural material in which a plurality of hollow tubes are bundled in the fifth embodiment.

FIG. 14 is a cross-sectional view showing another example of a structural material in which a plurality of hollow tubes are bundled.

FIG. 15 is a sectional view showing a modification of the structural material shown in FIG.

FIG. 16 is a cross-sectional view showing a modification of the structural material shown in FIG.

17 (A) to 17 (C) are sectional views showing a sixth embodiment of the structural material.

 FIG. 18 is a sectional view showing a seventh embodiment of the structural material.

FIG. 19 is a sectional view showing an example of a reinforced structural material according to the eighth embodiment.

FIGS. 20 (A) and (B) are cross-sectional views illustrating an example of a method of joining structural materials.

FIGS. 21 (A) and 21 (B) are cross-sectional views for explaining another example of a method of joining structural materials.

FIGS. 22 (A) and (B) are cross-sectional views for explaining another example of a method of joining structural materials.

FIGS. 23 (A) and (B) are cross-sectional views for explaining another example of the method of joining structural members.

FIG. 24 is a cross-sectional view for explaining a method of joining structural members at a connection.

 FIG. 25 is a sectional view showing an example of the lid member.

FIG. 26 is a sectional view showing an example of a rim frame to which a bag is attached.

FIG. 27 is a perspective view showing a bag for mounting a rim frame and a core rod.

FIG. 28 is a sectional view showing another example of the rim frame to which the bag is attached.

FIG. 29 is a cross-sectional view showing a structural material to which a bag is attached.

FIG. 30 is a sectional view showing a joined state using the structural material of FIG. 29.

 FIG. 31 is a perspective view showing an example of a connection frame.

FIG. 32 is a cross-sectional view showing an example of a portion of the connection frame to which the bag is attached.

FIG. 33 is a partially cutaway perspective view for explaining a method of joining structural members at a connection.

 FIG. 34 is a sectional view taken along line AA of FIG.

FIG. 35 is a cross-sectional view showing a case where the filler is filled in FIG.

 FIG. 36 is a perspective view of a reinforcing material used for a connection.

37 (A) and 37 (B) are perspective views each showing an example of a structural material in which a part of a hollow tube is cut away.

FIG. 38 is a perspective view showing a reinforcing material in a connection portion.

FIG. 39 is an assembled perspective view for explaining another connection portion.

FIGS. 40 (A) and (B) are perspective views each showing an example of a connection material.

 FIG. 41 is a vertical sectional view of FIG. 40 (B).

FIGS. 42 (A) and (B) are a perspective view and a vertical sectional view showing another example of the joint material.

FIGS. 43 (A) and 43 (B) are vertical sectional views each showing another example of the joint material.

FIG. 44 is a perspective view in the middle of assembly for explaining another connection part.

FIGS. 45 (A) and (B) are a perspective view showing a connection portion assembled from FIG. 44 and a sectional view taken along line AA.

46 (A) and 46 (B) are perspective views showing the vicinity of the top of the beam in FIG. 45 in an inverted state.

FIG. 47 is a perspective view for explaining another connection part.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a perspective view showing an example of a structural material according to the present invention. The structural member 1 is formed of a hollow tube made of concrete or a similar material (such as ceramics), and has irregularities 2 on its inner surface as shown in the figure. This structural material 1 is manufactured in a factory as follows. That is, FIG.
The middle mold frame 3 made of rubber which expands and contracts as shown in FIG. 1 is set in the mold frame, and is inflated by introducing air from the air holes 3a. After being placed outside the frame 3 at intervals, concrete is poured between the two forms, and after the concrete has hardened, the air is released to remove the medium form 3 and remove the outer form. Thereby, the structural material 1 having the unevenness 2 having a shape corresponding to the fold 3b of the middle mold frame 3 on the inner surface is manufactured. When pouring concrete, rebar, non-ferrous metal, organic or inorganic fibers (for example, nylon, aramid, glass,
It is preferable to reinforce the structural material 1 by adding fibers such as carbon. The outer surface of the structural material 1 may be provided with irregularities in design according to the purpose of use.

When a rubber middle frame 4 that expands and contracts as shown in FIG. 3 is used, a structural material having discontinuous unevenness on the inner surface corresponding to the unevenness 4b of the middle mold frame 4 is manufactured. 4a is an air hole similar to the above.

The structural material 5 shown in FIG. 4 has a structure in which the irregularities 6 provided on the inner surface of the hollow tube have a spiral shape. This structural material 5 is manufactured in a factory as follows. That is, an outer mold corresponding to the surface shape of the structural material 5 is installed, a spiral pipe is inserted at a predetermined interval in the outer mold, and concrete is poured between the two molds. It is made by turning and extracting the pipe at an appropriate time before the concrete hardens.

The concavities and convexities provided on the inner surface of the structural material can be formed in an arbitrary shape by using an appropriately shaped medium frame. 5 to 7 show examples thereof. In the structural material 51 shown in FIG.
Are continuous trapezoidal spiral screw grooves, and the irregularities 62 of the structural material 52 shown in FIG. 6 are discontinuous trapezoidal grooves. The unevenness 63 of the structural material 53 shown in FIG. 7 has a shape in which a cross section corresponding to the outer shape of the bellows is formed by combining a semicircular groove and a ridge. In addition, the structural material of the present invention can be manufactured by using a medium frame having a convex portion which expands and contracts by a mechanical method on the outside in addition to using the rubber medium frame as described above. is there. Alternatively, it is possible to use a medium frame made of a material that can be incinerated or corroded and remove it after the concrete has hardened, and in some cases, fill the medium frame and kill it to make the inner surface uneven. It can also be used as

FIG. 8 shows an example of a structural material in which the medium frame is buried. This structural material 531 buries a medium-sized frame 631 having trapezoidal irregularities on the inner surface of the hollow tube. The shape of the middle mold frame is not limited to the shape shown in the figure, and may be a waveform having irregularities as shown in FIGS. Further, depending on the intended use of the structural material, the middle frame may be provided with irregularities 4b as shown in FIG. In this case, there are a method of providing irregularities in a corrugated shape by providing an irregular member outside the middle mold frame, and a method of providing irregularities in a corrugated shape by pressing a hollow frame. The medium frame and the uneven member can be made of a material such as iron, non-ferrous metal, resin, cement, wood material, ceramics, or the like, or can be made of an inorganic or organic fiber such as carbon, glass, nylon, etc. May be used. If a strong material such as iron is used for the middle frame, the strength of the structural material is improved.

FIG. 9 shows another example of the structural material in which the medium frame is buried. This figure is a perspective view showing the structural material in a cut state, so that the shape of the buried medium frame can be understood. This structural material 532 buries a medium frame 632 having a plurality of protrusions 632a fixed inside on the inner surface of the hollow tube. The projection member 632a may be a rod-shaped member, or the rod-shaped tip may be appropriately shaped. The material of the projection material 632a may be the same as or different from that of the middle frame 632. Note that, depending on the purpose of use of the structural material, the projecting material may be directly fixed to the inner surface of the hollow tube without using the middle frame.

FIG. 10 shows still another example of the structural material in which the medium frame is buried. The medium frame 633 embedded in the structural material 533 is formed by knitting a vertical bar and a horizontal bar into a rectangular tube, and has an anchor 633a at an appropriate position for improving adhesion to the hollow tube. The shape of the vertical bar and the horizontal bar is arbitrary, and the material is the same as that of the above-mentioned medium frame. Further, a surface material 633b may be provided on the front side of the structural material 533 as a decorative material such as a tile or a reinforcing material for a structure.
The surface material 633b is made of the same material as that of the middle mold frame 633, and may be partially or entirely stretched, or may be used as an outer mold frame and buried. Such a surface material can be used for the structural material shown in FIGS. In addition. The medium frame shown in FIGS. 9 and 10 may be further shaped like a wave or a spiral.

Further, the unevenness of the structural material may be provided on the entire hollow tube, or the unevenness 64 may be provided only in the vicinity of the end portion to be the joining portion, as in the structural material 54 shown in FIG. The structural material provided with the unevenness as a whole can be cut to an appropriate length for use.

Further, the structural material of the present invention can be formed in a form in which a mounting portion such as a groove for mounting an accessory such as a wall material, a door, or a sash is formed outside the structural material when the structural material is manufactured in a factory. For example, in the structural material 55 shown in FIG. 12, one or two or more dovetail grooves 65 are provided on the outer surface as attachment portions so that a panel 66 or the like can be fitted therein. A projection 65a is provided on the opposite side. As described above, appropriate unevenness can be provided on the surface of the structural material in the vertical direction or the horizontal direction (not shown) as necessary.
Further, the outer surface of the structural material can be provided with various external shapes, such as high-grade shapes such as sculptures and patterns.

Further, as in the case of the structural members 56 and 57 shown in FIG. 13 and FIG. 14, those in which a plurality of hollow tubes are integrated into a bundle can be used. Further, a cross-sectional shape as shown in FIGS. 15 and 16 may be used. The structural material 571 shown in FIG.
This is a shape obtained by removing the inner wall 2a from the structural material 57 of FIG.
The structural material 572 shown in FIG. 16 has a shape obtained by removing the middle wall 2b from the structural material 571 in FIG. In the structural material of the type shown in FIGS. 13 to 16, it is not necessary to provide the unevenness 2 on all the inner surfaces,
There may be a hollow portion without unevenness depending on the purpose of use. Further, a part of the hollow portion is not hollow, and may have a solid structure in which concrete is cast in a factory.

The structural material comprising the hollow tube of the present invention is not limited to a hollow shape completely closed except at both ends. Figure
17 (A) to 17 (C), structural materials 58a, 58b, 58c having cutouts 581 formed at one or more locations over a part or the entire length of the building material are also included. Things. Appropriate unevenness 2 is provided in the hollow portion. In addition,
The width of the cutout portion 581 and the size of the inner space width 582 depend on the purpose of use of the structural material and the shape of the unevenness 2, but it is preferable that the smaller width of the cutout portion 581 than the inner space width 582 is adjacent to the structural material. Is securely connected.

FIG. 18 shows another example of the structural material. The structural material 59 is U-shaped, and a corresponding middle frame 69 is fixed to the inner surface thereof. The medium form frame 69 was buried when the concrete was cast. A projection 69a is formed on the middle frame 69 by punching. Depending on the size, concrete flows out of the hole 69b after punching, so that the hole 69b is closed by an appropriate means as necessary. The medium frame in which the projections are formed by the punching can be used also for the structural material of the type shown in FIGS. Also, medium-sized frames 631,632,63 shown in FIGS.
3, the medium frame 69 of the type shown in FIG.
Needless to say, it can be used for structural materials of types (C) to (C).

Although various types of structural materials have been described above as examples, it is necessary to reinforce these structural materials depending on the shape and purpose of use. FIG. 19 shows an example of a structural material provided with such reinforcement. In this structural material 591, a reinforcing portion 591a is provided at an appropriate position inside the hollow tube. And the reinforcement part 591a may have one or more openings 591b in its abdomen. The reinforcing portion 591a may be integral with the hollow tube, or may be formed by fitting a material of the same or different material. The mold 691 may be buried in the space between the two reinforcing portions 591a. Alternatively, a medium frame made of a material that can be incinerated or corroded may be used and removed after the concrete has hardened. Alternatively, a rubber medium frame inflated with air as described above may be used, and the concrete may be removed from the opening 591b after the concrete has hardened. Note that such a reinforcing portion can be provided by any of the types of structural materials described above.

Hereinafter, the method of joining the structural materials as described above will be described.

In the embodiment shown in FIG. 20, after joining the end surfaces of the two structural members 11 and 12 to be joined, the filler A is injected from the filling port 12a. In this case, the filler A fills the entire hollow portion of each of the structural members 11 and 12. Also, if necessary, the temporary fixing member 13
Temporarily fix using. As the filler, concrete, mortar, resin, ceramics, rubber and the like are used, and in addition, a non-ferrous metal such as zinc and aluminum or a molten iron can also be used. Further, iron, non-ferrous metal, organic or inorganic fiber, or the like mixed as a reinforcing material of the structural material 1 may be mixed into these fillers as needed.
Which filler to use may be determined according to the use of the structural material. In the embodiment shown in FIG. 21, a lid member 14 is provided near an end of each of the structural members 11 and 12 to be joined, and a surrounding elastic member 14 is provided.
a, and a reinforcing member 15 having a hoop streak is inserted into one structural member 12 and fixed with a spacer 16 or the like.
The filler A is injected from the filling port 12a into the space defined by. When the hollow portion of the structural material is small or the cover member 14 is installed deep, the auxiliary rod 17 is used as shown in FIG. This auxiliary rod 17 is fixed to one lid member 14.

The embodiment shown in FIG. 23 is a case where two structural members 11 and 12 in which the unevenness 6 is formed by a spiral groove are joined. The central portion of the lid member 18 in this example is a spherical surface that bulges toward the end of each of the structural members 11 and 12 to be joined, and an adhesive that has lubricity when uncured is applied to the outer periphery of the elastic member 18a. After the application, the screw is screwed to a predetermined position along the irregularities 6. After the adhesive is cured, the end faces of the structural materials 11 and 12 are aligned with each other, and then the filler A
Is injected, the circumference of the central portion of the lid member 18 is expanded by the pressure at that time, and the elastic member 18a is brought into close contact with the unevenness 6. Therefore, the filler A does not leak from the gap between the elastic member 18a and the unevenness 6.

21 to 23, when the air in the space where the filler A is injected does not escape from the joint gap, the lid member 18 or the structural material 11, 1
It is preferable to provide an exhaust hole of an appropriate size in 2 and further provide a check valve or a filter 85 described later in the exhaust hole so that the filler A does not leak.

An example in which a joint is constructed with the structural material of the present invention using the above-described joining method will be described step by step with reference to FIG.

First, the base plate 21 is fixed to the anchor 22 embedded in the foundation concrete. After welding the reinforcing material 15 to the base plate 21 as necessary, the lower pillar made of structural material
23 is put in place and temporarily fixed. Then, lower pillar 23
When the filling port 24 is provided, a predetermined amount of the filler A is injected from the hole when the filling port is not provided, and from the upper opening of the lower column 23 when the filling port is not provided, and the lower column 23 is inserted into the base plate 21. Fix it. As another method, the reinforcing member 15 may be directly buried in the foundation concrete without providing the base plate 21 and the anchor 22. Next, the cover member 26 attached to one end of the auxiliary rod 25 is fitted into the inside from the upper opening of the lower pillar 23. In this example, a spring 27 or the like is provided around the lid member 26 to narrow the gap between the unevenness 6 and the lid member 26 to support the lid member 26 by its elasticity. When there is a danger that the lid member 26 may go down,
What is necessary is just to hold | maintain the upper end of 25 by an appropriate method.

Next, the beam 30 made of the structural material is temporarily
It is installed on both sides on the lower pillar 23 using 31 or the like. At this time,
It is necessary to insert the lid members 33 respectively installed at both ends of the connecting rod 32 into the inside of the beams 30, 30 on both sides.
In order not to disturb the installation, it is preferable to insert the beam 30 deep inside the beam 30 on one side, install the beam 30 on the opposite side, and return the lid members 33 to their respective predetermined positions. Also, install the lid member 33 at the factory or on-site, and
The reinforcement 15 may be attached as described in 21. Finally, after the upper pillar 35 is installed, the filler A is injected into the space defined by the lid members 26, 33, and 33 from the filling port 36 and solidified.
The columns 23 and 35 and the beams 30 and 30 made of a structural material are joined. The beams 30 may be installed on three or four sides or more as needed, or may be installed in an oblique direction.

In the above example, the upper pillar 35 does not use a lid member. This is because the filling material A is filled by gravity because the filling port 36 is provided above the predetermined filling range. However, the lid member is fixedly attached above the filling port 36,
When the filler A is injected at a predetermined pressure, the solidified filler A
This is a preferred method because the strength of the film can be increased.
Before installing the beam 30, the filler A
May be filled beforehand.

In the above-described embodiment, as a method of attaching the lid member to the structural material in a fixed state, the elastic member attached around the lid member is formed into a tire shape of a vehicle having a hollow inside, and the lid member is placed at a predetermined position. After installation, compressed air may be sent into the tire to expand it, and the elastic member may be brought into close contact with the unevenness of the structural material.

FIG. 25 is a cross-sectional view illustrating another method for fixing the lid member inside the structural member in a fixed state. In this example, the lid member 40
Is a ring-shaped bag on a rim frame 42 provided around the plate material 41.
43 is attached and the rim frame 42 has an injection pipe
44 are connected. After inserting the lid member 40 to a predetermined position in the structural material 1 using the auxiliary rod 17 and then injecting the filler B into the bag 43 from the injection pipe 44, the bag 43 expands and the structure 1 Engage with the irregularities 6. When the filler B is solidified, the lid member 40 is fixed. According to this method, even if the unevenness 6 has a complicated shape, the lid member 40 can be fixed in close contact with the inside of the structural material 1. At this time, the filler B is transferred to the auxiliary rod 17.
Alternatively, a method of injecting into the bag body 43 from the rim frame 42 through the inside of the plate material 41 can be adopted.

In this manner, the lid member 40 is fixedly mounted in the structural member 1 and the ends of two or more structural members are butted by the above-described method. Are injected and solidified to join the structural materials.

The bag 43 is made of rubber, ceramics, nylon, aramid,
It is a woven or non-woven fabric formed from an organic or inorganic material such as carbon or glass fiber, and may be coated with an organic polymer material. This bag 43 is, for example, shown in FIG.
6, attached to the rim frame 42 as shown in FIG. The tip of the rim frame 42 can be opened in two as shown in FIG. 26 and is further hollow, and is fitted so as to wrap the core material 46 at the end of the bag body 43 as shown in FIG. Rim frame 42
Into the hollow part 45 and fix them together with screws 47.
When the core material 46 is inserted into the hollow portion 45, if the elasticity of the hollow portion 45 is poor due to the material of the rim frame 42, the rim frame 42a
What is necessary is just to make it thin like the dotted line. When such a rim frame 42 is provided adjacent to the rim frame 48, as shown in FIG. 28, a groove, a square member having a dovetail may be added to the rim frame 48,
Further, if necessary, only a plurality of square bar portions may be combined and used for adjusting the frame interval. As the material of the rim frame 42, a material such as iron, non-ferrous metal, resin, ceramics, or the like obtained by solidifying inorganic and organic fibers such as carbon fiber and aramid fiber is used.

In the joining method of the structural materials using the lid member of the embodiment described above, it is necessary to fix the lid member inside each structural material in a fixed state. Next, an embodiment in which the lid member is attached to only one side. State.

FIG. 29 is a cross-sectional view showing a structural member 71 in which a bag 73 is attached in a contracted state near an end to be joined. The bag body 73 is sandwiched between the plate members 74 and 75 from the front and rear, and the locking members 83 and 84 or the adhesive tape 83
The bag 73 is kept in a contracted state, and the bag 73 is attached to the plate members 74 and 75 and stored in a contracted state with a restraining member 77 such as a bendable string material such as a chain, a wire, or a rope. Have been. An injection pipe 78 fixed to the rear plate 75 is connected to the center of the bag 73. Another injection pipe 79 is juxtaposed with the injection pipe 78.
Is connected to a ring-shaped bag body 80 provided around the plate member 75. The bag body 73 is held at the center of the hollow portion by spacers 81 and 82 provided at several places on the front plate member 74 and the rear plate member 75.

FIG. 30 is a cross-sectional view showing the joined state of the structural member 71 and the other structural member 72. To join, both structural members 7
After butting the ends of 1,72, the filler B is injected into the ring-shaped bag body 80 from the injection pipe 79 to expand it, the rear plate 75 is fixed, and then the bag body is injected from the injection pipe 78. 73
Filler A is injected into the container and expanded. Thereby, the bag 73
Is filled into the bag body 73 while extending into the facing structural material 72 and simultaneously engaging with the unevenness of the inner surface of the hollow portion.
Is solidified to be in a joined state as shown in the figure. The front plate 74 is provided with a filter 85 that allows air to pass through but does not allow the filler A to pass therethrough. When the filler A is pressed into the bag 73, air remaining in the bag 73 is removed. Release, preventing the formation of cavities. Further, when the filler A is injected, the filler A comes off the locking members 83, 84 or the adhesive tape 83a due to the filling pressure.
The shape of the unevenness on the inner surface of the structural material 71 is arbitrary. Therefore, depending on the shape of the unevenness, the plate member 74 and the constraint member 77 may not be necessary if the plate member 74 is made thicker.
The lid member 14 shown in FIGS.
When used in combination, it is possible to restrict the bag from extending in the direction in which the structural material extends.

The method of joining a structural material by using one bag as described above and injecting and solidifying a filler into the bag is complicated when, for example, a beam is provided at a joint between a lower pillar and an upper pillar. Then, it becomes troublesome work in terms of joining the bags and holding the bags. In such a case, the connection frame as shown in Fig. 31
It is good to join bags using 90. The connection frame 90 is composed of one or two or more frame bodies 91, the mounting angle of which is optional, and each frame body 91 having an appropriate shape depending on the number and angle of the joining points of the structural material is shown in FIG. 26 and FIG. The bag is attached by the method shown in FIG. Instead of using the frame body 91, as shown in FIG. 32, the rectangular rim frame 48 with square members shown in FIG.
It may be 90.

A method of joining three or more structural members using such a connection frame will be described below. The connection shown in FIG. 33 is a case where beams in four directions are joined between the lower pillar and the upper pillar.
FIG. 34 shows a main portion of the AA cross section of 33, and FIG. 35 shows a lower half of FIG. A connection frame 100 is installed at the upper end of the structural material 101 of the lower pillar, and the column main reinforcement 103 and the beam main reinforcements 113 and 123 are arranged so as to fit within the connection frame 100. Connection frame 100
When there is a beam main reinforcing bar or the like, the beam is held by the main reinforcing bar, and when there is no beam main reinforcing bar, the structural material is held by a spacer 16 or the like. At this time, the main bars are reinforced with stirrup bars 104, 114, and 124. Next, bags 105, 106, 115, and 1 are provided on the respective opening surfaces of the connection frame 100.
Attach one end of 16,125. When the bags are shrunk along the main muscle in a contracted state and the other ends are clamped by the nuts 106a attached to the ends of the main muscles, the bags can be prevented from moving in the extending direction of the structural material. In this way, the bag plays the role of the lid member 135. The nut 106a is screwed into a fixing plate 106b fixed to the beam main reinforcement 123. After that, after temporarily fixing the structural members 111, 112, 121, 122 of the beams on the structural members 101 of the lower pillars using the temporary fixing members 131, the structural members 102 are further installed on the structural members 111, 112, 121, 122 of those beams, and the temporary fixing members 131 are removed. To temporarily fix the structural material 102 of the upper pillar.

Then, the filling pipe penetrates through the bag and the frame, and the filling port 130
When the filling material A is injected from the filling port 130, each bag body 105, 106, 115, 116, 125 expands and comes into close contact with the unevenness of each structural material. When the filler A is solidified, the respective structural members are integrally joined. In addition, if an inflatable material is added to the filler A, the pressure inside the bag body increases, so that the pressing force against the unevenness of the structural material increases. 33 to 35, a bag body is not used for the lower pillar 101, but a bag body is used for the upper pillar 102. As described above, for joining the column and the beam, the reinforcing material and the bag body may or may not be put in the structural material as necessary, or any of them can be combined, and an appropriate method can be selected depending on the purpose of the structural material. . It should be noted that FIG. 35 shows an example in which the connection frame 100a is formed by using two rim frames 48 with square members as shown in FIG. Further, edges of a partition plate 16a provided with holes of an appropriate size as necessary are fitted into the dovetail groove and the protrusion of the connection frame 100a along four sides. This can increase the strength of the connection frame 100a and fill the filler for each beam.

FIG. 36 is a perspective view of a reinforcing material used for a joint portion between a beam and a column, that is, a connection portion. 33 to 35, the reinforcing members were the column main reinforcement 103, the beam main reinforcements 113 and 123, and the stirrup reinforcement 104 attached thereto. In some cases, the steel frame 39a is used to increase the cross-sectional area of the structural material or increase the strength of the connection of the structural material. FIG. 36 shows a case where a steel frame is used as a reinforcing material. When the connection frame 100 is attached to the steel reinforcing member 39 as necessary, it may be installed as shown by a dotted line, or the other end of the bag may be directly attached to a steel frame or a reinforcing bar. Reinforcement
It is also possible to use the column main bar 103 and the beam main bar 113 shown in FIG. Further, the shape of the reinforcing material may be rectangular, circular or L-shaped, or the material may be provided with irregularities as needed. The material is not limited to iron, and may be formed by bundling inorganic or organic fibers such as non-ferrous metals, concrete, ceramics, carbon, and nylon.

After the structural members of a plurality of columns are erected and the reinforcing material of the connection shown in FIG. 33 is installed, when installing the structural members of the beams, the beam main reinforcement 11
When it is not possible to install the beam structural member 111 or the like while moving 3 or the like, or when using the steel reinforcing member 39 of FIG. 36, the structural member shown in FIG. 37 may be used.

FIG. 37 (A) shows a structural material 150 in which a part of a hollow tube is cut away.
FIG. 37 (B) is a perspective view of a structural member 152 in which two hollow tubes are cut out at two places. Notch 151,153 for each structural material
The range of the length may be only a part of the above-mentioned reinforcing material, or may extend over the entire length according to the purpose. In the case where the filler flows out when the filler is injected into the connection, the mold 151a may be applied only to a necessary portion. When using a bag, the formwork 151a may be used depending on the purpose and the shape of the structural material,
It does not have to be used. When attaching to the reinforcing material, the positions of the cutouts 151 and 153 of the structural material may be any of up, down, left and right, and this may be determined according to the purpose of use of the structural material. When such structural members 150 and 152 are used, it is easy to set up the beams.

If the place where the structural material is used is a place where a structural stress acts, or if it is not desired to use the structural material provided with the notches 151 and 153, the structure shown in FIG. 38 may be adopted.
FIG. 38 is a perspective view in the case where the connection frame of the connection portion is located at the intersection of the pillar and the beam. In FIG. 38, a connection frame 100 in which a bag body is attached to the connection frame 90 of FIG. 31 is fixed and installed at a position of the connection of the steel frame 99 by an appropriate method.

The bags 115 and 125 are folded and stored in the connection frame 100, and are temporarily fixed with the adhesive tape 83a. As described with reference to FIG. 29, the restricting member 77 is fixed to the lid member 135 with the bolt 106a. The opposite side is fixed to the plate 75 attached to the connection frame 100 with bolts 106a or the like, directly attached to the connection frame 100, or directly fixed to the steel frame 99 with bolts 106a or the like.

The connection method shown in FIG. 38 can also be used for the connection shown in FIG. After the cover member 135 and the like are installed at appropriate positions on the lower column 101, the steel frame 99 is built in the hollow portion of the lower column 101, and a filler is filled as necessary. Next, after installing the beam 111 and the like at the position of the connection frame 100, the upper pillar 102 is installed. Filling hole
From 130, a filling pipe is provided to penetrate the bag and the frame, from which the filler A is injected. The upper pillar 102 is provided with a lid member as needed, and the adhesive tape 83a is peeled off by the filling pressure to open and fill the bag. When a cover member is provided on the beam, the cover member 135 of the bag and the restraint member 77 are not required. When this coupling method is used, the notch 151 and the like become unnecessary.

FIG. 39 shows a perspective view of the attachment of another connection portion. In the figure, a notch 15b having a shape corresponding to the beam is provided at the beam joining position of the lower column 101a, and an overhang plate 15a is provided at the lower end as necessary. The overhang plate 15a supports the load acting on the beam and, when the notch 156 or the like is provided, serves as a formwork for the notch. In FIG. 39, a reinforcing member 15 made of a reinforcing bar is provided. That is, a predetermined number of holes having a diameter through which the rebar can penetrate are formed in the web surface of the steel frame at appropriate intervals, and after the steel frame is erected, the rebar is inserted into the hole. 38 is attached to the flange surface of the steel frame by an appropriate method. Therefore, the reinforcing bar and the bag can be used together at the beam connection. After the beam 150 and the beam 150a are installed and temporarily fixed, the structural material of the upper column is placed on the lower column 101a and temporarily fixed, and the filler is injected from the filling hole. In this joining method, a strong connection can be formed by fitting the beam 150 or the like into the notch 15b of the column.

The connections shown in FIGS. 40 and 41 are used to construct high-quality buildings in a medieval European style. FIG. 40 (A) is a perspective view of the appearance of the connection, and FIG.
41 is a perspective view of the connection with the upper column 162 and three beams 163 removed, and FIG. 41 is a vertical sectional view of FIG. 40 (B).

The connection material 160 is concrete, pottery, ceramic,
It is made from hardened inorganic or organic fibers such as iron, non-ferrous metal and carbon or aramid, or made by processing natural stone. The connection member 160 has grooves 16 on its upper and lower surfaces for receiving the edges of the lower pillar structural member 161 and the upper pillar structural member 162.
8 has grooves 165 on the side surface for receiving the beam structural material 163 at predetermined positions according to the number of beams. In addition, the column main bar 166 is buried in the vertical direction of the connection member 160 in a state of protruding, and the frame main body 169 buried in the left and right direction is framed on the edge end surface.
67 is embedded in an appropriate manner.

In forming this connection, first, the groove 1 of the connection material 160
The 68 portion is fitted and installed on the upper end of the structural member 161 of the lower pillar, and the filler is pressed into the hollow portion of the structural member 161 from the filling port 161a to connect them. Next, the structural members 163 of the beams are inserted into the respective grooves 165, and the filler A is press-fitted into the inside of the bag body 171 from the injection port 163a to be solidified. Finally, the structural member 162 of the upper pillar is fitted into the groove 168 on the upper part of the connection material 160, and the filler A is injected into the lower part of the hollow portion of the structural material 162 and solidified to complete the connection.

42A and 42B show the joining of the structural members by another connection block. FIG. 42A is a perspective view of the vicinity of the connection member, and FIG. 42B is a vertical sectional view of FIG.

40 is solid, while the joint 200 of FIG. 42 is hollow, and the joining method is similar to that of FIG. 39 described above. The connection member 200 is provided with a vertical through hole 206 penetrating in a vertical direction, and the inner surface thereof is provided with irregularities as necessary. Also, horizontal holes 205 are provided in the horizontal direction by the number of beams, and irregularities are provided on the inner surface of the horizontal holes 205 as necessary. The horizontal holes 205 communicate with the vertical through holes 206.

As for the construction method, the lower pillar 20
The connection material 200 is placed on 1. In the figure, the lower surface of the connection member 200 and the upper end surface of the lower column 201 are in contact with each other, but it is also possible to provide the receiving groove 204 like the upper column 202. Next, insert the beam 203 into the horizontal hole 20
Insert into 5. After that, after the upper pillar 202 is erected and installed in the receiving groove 204, a filler is injected from the filling hole 209. As described above, whether the reinforcing material 166 or the like is provided, the connection frame 100 or the like is provided, or the cover member 14 or the like is provided may be appropriately selected depending on the intended use of the structural material. In addition, the method of processing when the beam is built in the connection uses the joining method of FIGS. 33 and 39,
The groove 165 in FIG. 40 can be used in a horizontal direction.

The joint material used in the present invention includes a joint material in a form that is a compromise between FIGS. 40 and 42. FIG. 43 (A) is a vertical sectional view of such a joint, and FIG. 43 (B) is a vertical sectional view of another joint.

The connection member 201 shown in FIG. 43 (A) has a vertical through hole 218 having a concave / convex shape in the center thereof, if necessary,
Is provided. A downward installation hole 215 of the connection member 210 is erected at the capital of the lower pillar 211, and temporarily fixed as necessary. A beam connection frame 216 is embedded in each of the connection members 210, as shown in FIG.
Receiving grooves 217 are provided in the same manner as 40. After the required number of beams 213 are installed in this connection material 210, the vertical through holes 21 are formed.
Filler is injected from each of the filling holes 218a provided in 8.
After that, the upper pillar 212 is erected in the installation hole 214 of the pillar, and the filler is injected from the filling hole of the upper pillar.

The joint 220 shown in FIG. 43 (B) is different from that shown in FIG. 43 (A) in that a through hole 228 is provided in the lateral direction. Reinforcing bars 227 are embedded at the top and bottom, respectively. First lower pillar 2
Place the installation hole 225 of the connection material 220 on the capital of 21 and fill the hole 225a.
Inject more filler. Next, the beam 223 is installed on the beam installation table 226 of the connection member 220, and the filling A is injected from the filling hole 226a provided in the installation hole 224 of the upper pillar 222. Finally, the upper column 222 is installed in the installation hole 224 of the upper column 222, and the filler A is injected.

FIGS. 44 and 45 show another joining method at the beam-column connection. FIG. 44 is a perspective view showing the connection between the beam and the column during assembly, and FIG. FIG. 45B is a perspective view of a connection portion between a beam and a column, and FIG. 45B is a cross-sectional view taken along a line AA in FIG.

In the connection shown in FIG. 39, notches 15b are provided in the lower pillar 101a, but in the connection in FIG. 44, the notches 303a to 303d (303
c and 303d are provided on the opposite sides of 303b and 303a, respectively. That is, at the intersections of the columns 301 and 302 and the beams 304 and 305 in the beam 303, cutouts having shapes corresponding to the hollow portions of the columns and beams to be joined are provided by the number of members to be joined. The construction method is as follows. That is, the plate-like joint member 230 having the notch 230a near the center is placed on the head of the column 301, and the notch 303d of the beam 303 and the notch 230a of the joint member 230 are installed together. Notch
The beams 303, 303b, and 303a are installed together with the hollow portions of the beam 304, the beam 305, and the column 302, respectively. Then, after temporary fixing as necessary, a filler is injected from the filling port 310.

Also at the connection part in FIG. 45, as described above, the lid member 1
4. The same method is used for the installation and construction of the reinforcing material 15 and the bag. The connection member 230 is provided as needed, and the installation location is not limited to the head of the pillar 301, and may be provided at the bottom of the pillar 302 or at both. Further, the shape of the connection member may be varied as shown in FIGS. When extending the beam 303, as shown in the figure,
Another beam 306 may be brought into contact with the end 307 of 03, and a filler may be injected and connected in the same manner as described above.

FIG. 46 is a perspective view of the vicinity of the top of the beam 303 in FIG. 45, which is shown in an inverted state for easy understanding. FIG. 46 (A)
In the example shown in FIG. 1, a structural material 1 of the type shown in FIG.
A substantially linear exhaust path 121b is provided near the center of the top by cutting the unevenness 2, and an exhaust hole 12b is provided in front of the lid member 14 in connection with the exhaust path 121b. As the filler is injected into the hollow portion of the structural material 1, air in the hollow portion collects on the top portion, and depending on the shape of the unevenness 2, air may accumulate even after the filler is hardened. Therefore, the air collected at the top during the injection of the filler is discharged through the exhaust passage 121b naturally or forcibly through the exhaust hole 12b. If this is still insufficient, for example, an exhaust pipe 122b having small holes 123b as shown in the figure is installed in the exhaust path 121b, and exhaust is performed through the filler inlet and the exhaust holes 12b. After that, whether to extract or bury the exhaust pipe depends on the situation at the site. In order to prevent air from stagnating in the unevenness 2 on the inner surface of the structural material 1, even if the outer shape of the structural material 1 is, for example, rectangular, the hollow portion is made circular or elliptical so that the air gathers in the exhaust path 121 b. Good to do. In the example shown in FIG. 46 (B), the exhaust path 121b is provided in a state where the valleys of the unevenness 2 are connected through the peaks of the unevenness 2. For other methods of discharging air, see the exhaust path 121b.
The upper side of the beam may be partially cut out as in the notches 151 and 153 of 37, or the exhaust hole 12b may be formed in a rectangular shape as the notch 303a in FIG.

FIG. 47 is a perspective view for explaining another joining method at the joint between the beam and the column. This bonding method appropriately employs the bonding method described with reference to FIGS. The construction method is to first install the connection material 230 on the top of the pillar 311 and then use the beam 313
After forming the connection opening 317 by aligning the end faces of
Install 2. In this construction, as in FIG.
Alternatively, the temporary fixing member 31 described above may be used. In addition,
The 230 may be installed at the lowermost end of the column 312 and on the upper boundary between the beams 313 to 316, or a connection material may be installed on both the upper and lower sides. Also,
A structure in which the connection member 230 is omitted may be adopted.

As described above, the examples of the types of the structural materials and the joining method thereof have been described in detail with reference to FIGS. 1 to 47. However, the present invention is not limited to the above-described examples, and the described concrete configurations may be appropriately combined. Needless to say, the present invention can be implemented by changing various specific configurations within the scope of matters described in the claims.

For example, when the overhang plate 15a, the reinforcing member 15, the connection frame 100, the notch 15b of the column, the beam groove 165 of FIG. 40, and the column groove 168 of FIG. Can be made. Also, a new joint obtained by combining the joints 210 and 220 shown in FIGS. 43A and 43B, that is, the joint 200 of FIG. 42 is rotated by 180 °, and the lower surface 207 of the joint 200 is raised. A connection member placed at the position of the column 202 can also be manufactured. Further, in the joint 210 shown in FIG. 43 (A), a joint having a shape in which the upper half or the lower half of the through hole 218 is filled may be manufactured at a factory. Or,
In the joint 220 shown in FIG. 43 (B), the joint between the hollow portion of the lower column 221 and the through hole 228 may be used.
The connection member may be a connection member that communicates the hollow portion 22 with the through hole 228.

INDUSTRIAL APPLICABILITY The structural material of the present invention is made of a hollow tube made of concrete or a similar material, and has irregularities on its inner surface. By filling a solidifying filler with the above, bonding can be performed by utilizing the unevenness of the structural material. In addition, by appropriately using the expandable filler according to the purpose, the structural material can be securely joined. However, since the on-site work is simple and simple, even a worker without skill can easily work. In addition, since a structural material having an arbitrary shape can be used, economical efficiency of the structure and diversification of the design can be achieved.

When a structural material is built, stress acts on its joint. At this time, edge stress is generated in the uneven portion of the structural material and the uneven portion of the filler. Depending on the degree of the edge stress, a medium frame having unevenness is embedded on the inner surface of the structural material, It can be handled by putting a reinforcing material in the joint, putting a bag, or putting a fiber such as glass, carbon, aramid, etc. in the filler, so that a surface material is applied to the surface of the structural material according to the purpose. It can be stretched or reinforced. Therefore, it is possible to cope with a complicated structure of the connection. Furthermore, since a normal connection material can be used or a high-quality connection material can be used according to the purpose of the structure, construction is easy and abundant design is possible.

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification code FI E04B 1/58 505 E04B 1/58 505H 508 508H E04C 3/34 E04C 3/34 (56) References JP-A-56-159443 (56) JP, A) JP-A-49-102120 (JP, A) JP-A-4-221136 (JP, A) JP-A-5-280150 (JP, A) JP-A-5-321401 (JP, A) JP-A-8-218548 (JP, A) JP-A-6-136837 (JP, A) JP-A-48-24525 (JP, A) JP-A-5-18017 (JP, A) JP-A-9-209498 (JP) JP-A-50-56014 (JP, A) JP-A-51-67620 (JP, A) JP-A-5-295800 (JP, A) JP-A-7-207768 (JP, A) 62-264235 (JP, A) JP-A-4-277223 (JP, A) JP-A-5-296217 ( JP-A-5-339937 (JP, A) JP-A-7-158206 (JP, A) JP-A-8-13692 (JP, A) JP-A-1-158153 (JP, A) JP-A-6-248756 (JP, A) JP-A-7-40327 (JP, A) JP-A-8-232400 (JP, A) JP-A-61-24735 (JP, A) JP-A-2-80748 (JP) , A) Actually open 1979-15837 (JP, U) Actually open 1983-151220 (JP, U) Actually open 49-69717 (JP, U) Actually open 1984-89909 (JP, U) Actually open 3-119032 (JP, U) JP-A 3-93504 (JP, U) JP-A 4-10605 (JP, U) JP 4-17261 (JP, B2) JP-B 58-37461 (JP, U) B2) JP 8-16356 (JP, B2) JP 4-41737 (JP, B2) JP 3-53420 (JP, B2) JP 55-38991 (JP, Y2) JP 1 -9852 (JP, Y2) Jikken 52-6169 (JP, Y2) Jikken 60-27151 (JP, Y2) 7368 (JP, B1) JP 40-16624 (JP, B1) JP 35-2583 (JP, B1) JP 49-29853 (JP, B1) JP 52-11133 (JP, B1) Japanese Utility Model Showa 34-5439 (JP, Y1) Japanese Utility Model Showa 38-24953 (JP, Y1) Japanese Utility Model Showa 22-3615 (JP, Y1) Japanese Utility Model Showa 33-20038 (JP, Y1) Japanese Utility Model Showa 34-12837 (JP, Y1) 37-2941 (JP, Y1) 35-15236, JP (Y1, JP) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 5/24 101 E04B 1 / 18-1/21 E04B 1/24 E04B 1/58 503-508 E04C 3/20 E04C 3/34

Claims (15)

(57) [Claims] 1. A structural material used for a pillar or a beam in a civil engineering or architectural structure, comprising a hollow tube made of concrete or a similar material, wherein adjacent air tubes are in contact with each other. Injects a curable filler into the interior of the hollow and solidifies it, which has the function of joining the air tubes when solidified, and further engages a lid member and / or a bag for the filler. A structural material having irregularities on the inner surface of a hollow portion for making the surface uneven. 2. The structural material according to claim 1, wherein an attachment portion for attaching an accessory or an irregularity in design is provided outside the hollow tube. 3. The structural material according to claim 1, wherein a plurality of hollow tubes are integrated in a bundle. 4. An inner surface of a hollow portion of a hollow tube may have any one of an annular continuous shape, a helical shape, an intermittent shape cut in a transverse direction at a predetermined width, or any of them. The structural material according to any one of claims 1 to 3, wherein at least two or more of the shapes are combined. 5. The structural material according to claim 1, wherein a middle frame and / or a reinforcing plate is provided on the inner surface of the hollow portion of the hollow tube. 6. The structural material according to claim 1, wherein a part or all of the hollow tube is cut off. 7. The structural material according to claim 1, wherein a surface material is provided on part or all of the surface of the hollow tube. 8. A method of joining by joining any one of the structural materials according to claim 1 or 7, wherein a lid member and / or a bag body is engaged with unevenness of an inner surface of a hollow portion of the structural material. After joining the end portions of the two or more structural materials or the end portions and the side surfaces, the joining of the structural materials is performed by injecting a filler into the structural material and solidifying the filler. Characteristic method of joining structural materials. 9. A method of joining by combining any one of the structural materials according to claim 1 or 7, wherein a lid member and / or a bag body is engaged with unevenness of an inner surface of a hollow portion of the structural material. After joining the structural material to the joint or the overhanging plate provided in the cutout of the structural material, joining the structural materials by injecting and solidifying a filler into the structural material A method of joining structural materials. 10. A method for joining by combining any one of the structural materials according to claim 1 or 7, wherein a lid member is provided near an inner surface of the hollow portion near the structural material to be joined. After the end portions of the at least two or more structural members to which the lid member is attached are brought into contact with each other or with the side surfaces, a filler is injected into a space defined by the lid member and solidified. The structural material is joined to each other by joining the structural materials. 11. The method for joining structural members according to claim 10, wherein a reinforcing material is inserted in the joint of the structural members. 12. A method for joining by joining any one of the structural materials according to claim 1 or 7, wherein a bag is provided near the one of the structural materials to be joined, with irregularities on the inner surface of the hollow portion. After the end of this structural material and the other structural material are brought into contact with each other or the end and the side surface, a filler is injected into the bag to expand the bag. A method for joining structural materials, comprising joining. 13. A method for joining a structural material comprising a hollow tube made of concrete or a material similar thereto and having a concave and convex surface on the inner surface of the hollow portion, wherein one of the structural materials is joined. When a bag is attached near the tongue and the end of this structural material and the other structural material abut against each other or the end and the side surface, when the filler is injected into the bag and inflated, the other of the bag is used. A joining method of a structural material, wherein a reinforcing material or a lid member is fixed to an end. 14. A method of joining a structural material comprising a hollow tube made of concrete or a material similar thereto and having a concave and convex inner surface of the hollow portion, wherein one of the structural materials is joined. When the bag is attached to the vicinity of the tongue and the end of this structural material and the other structural material abut against each other or the end and the side surface, when the filler is injected into the bag and inflated, the tip of the bag is Characterized in that the extension of the bag body is restricted via a lid member, a reinforcing member or a restricting member so that the bag does not extend more than a certain length in the extending direction of the structural member. 15. A hollow tube made of concrete or a similar material, wherein a hardening filler is injected into the hollow and solidified while the adjacent hollow tubes are in contact with each other. When joining a structural material having irregularities on the inner surface of the hollow portion, which serves to join the tubes, a lid material used to partition the filling region, and the inner surface of the hollow portion of the hollow tube A lid member provided with an attachment means and / or an air vent attached to the concave and convex portions.