JPH07331757A - Joint part connection method of non-weldable columnar material and connection assistant material - Google Patents

Abstract

PURPOSE:To connect the joint part of plural columnar materials strongly by bringing the tightening surface of a connection assistant material filled with a filler with high compression rigidity inside a cylindrical mold material in contact with the tightening surface of a columnar material and fixing them after tightening by bolts and nuts. CONSTITUTION:When a column 1 with I shape section is connected to a beam 2 at a right angle joint, a connection assistant material 3 consisting of a hollow mold material 4 made by the extrusion molding of nylon and a filler 5 is brought in contact with the column 1 and the beam 2. The connection assistant material 3 is made by placing the hollow mold material 4 vertically, at first and making the raised bottom made of a paper with polyethylene stretched thereunder and making the filler 5 by putting the cement muddy article including sand with high compression rigidity thereon and hardening it. The connection assistant material 3 made like the above is tightened and fixed to the column 1 and the beam 2 by using bolts 6, 7 and nuts 8, 8 and the column 1 is connected to the joint part 9 of the beam 2. Thereby, the rigidity of the joint part connection of plural non-weldable columnar materials is improved and the strong joint part can be constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a joint portion of a columnar material which cannot be welded and a connection auxiliary material for firmly connecting the joint portions of a plurality of columnar material which cannot be welded.

[0002]

2. Description of the Related Art Conventionally, two fiber-reinforced columnar members (for example, a cross-section shaped product) are connected at right angles to each other by connecting two surfaces which are perpendicular to each other, and two surfaces are triangular webs. It is also tied and has a strong dust collecting shape, and uses a molding material by a resin transfer method (hereinafter referred to as RTM method) as a connection auxiliary material.

That is, there is a connection method in which the right-angled plane of the connection auxiliary member is brought into contact with each surface of the columnar member, and then the columnar member and the connection auxiliary member are tightened and fixed with bolts and nuts. Proposed.

[0004]

However, when manufacturing such a connection auxiliary material by the RTM method, even if a draft taper which is usually required at the time of molding is allowed inside, a taper is formed on the outside. Since it is not allowed, the outer mold at the time of molding has to be a disassembled mold, which originally has poor productivity.
Make the TM method more inefficient. As a result, the cost for forming the connection auxiliary material is high, and it is difficult to put it into practical use due to price restrictions. According to the RTM method, when the fiber reinforcement mat is installed in the mold, the size of the molded product (connection auxiliary material) is about 8 cm to 30 cm even if it is the largest side. There is a possibility that the strength of the molded product may be greatly affected by a slight variation in the placement that occurs each time the device is installed, and the reliability may be reduced. To avoid this problem,
Although there is a method of using a preform mat, this method has a problem that the material cost is remarkably increased, and combined with the expensive molding and processing cost, it becomes more and more difficult to be practically used.

[0005]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that the connection method using the above-mentioned dust collecting connection auxiliary material, which has been publicly known, is extremely expensive or, in some cases, connection auxiliary. It is intended to reduce fluctuations in the strength of the connection part due to the low reliability of the quality based on the batch forming of the material. An object of the present invention is to provide a highly reliable connection method and connection auxiliary material.

That is, the present invention is not limited to the shape of the known connection auxiliary material, and a hollow molding having a cross section of substantially 3 or 4 sides is obtained by an appropriate molding method, and an external force is applied to the inside of the hollow molding. A compression resistant filler is incorporated to resist and increase rigidity, and it is used as a connection aid. This makes it possible to obtain a connection auxiliary material having higher reliability than known connection auxiliary materials.

That is, in the invention of the method, in the connecting method for connecting a plurality of columnar members which cannot be welded at a predetermined angle under the interposition of the connecting auxiliary member, the connecting auxiliary member is a tubular molding material. The columnar member and the connection auxiliary member are brought into contact with the tightening surface of the columnar member by contacting the tightening surface of the columnar member with the bolt and nut, It is a method of connecting a joint portion of a columnar member that cannot be welded, characterized by being fixed by tightening. The columnar material that cannot be welded is a fiber-reinforced synthetic resin columnar material or a fiber-reinforced cement columnar material.

Next, the invention of the present invention is characterized in that a non-weldable columnar material is characterized in that a filler having high compressive rigidity is internally contained inside a reinforced tubular molding material having at least two mutually-angled connecting surfaces. It is an auxiliary material for connecting the joint of the material. Further, the reinforced tubular molding material is made of fiber reinforced synthetic resin, and the filler having high compression rigidity is gypsum, cement mortar, concrete, foam concrete or these fiber reinforced substances as the inorganic substance, and resin concrete as the organic substance. ,
Other synthetic resins or their fiber reinforced products are used. Next, the tubular molding material may be formed by any molding method such as an extrusion molding method, a pultrusion molding method, a hand layup method, and a filament winding method. The inside of the molding material made of these is filled with the above-mentioned high compressive rigidity filler,
It is a connection auxiliary material of this invention.

When the above-mentioned molded product is used as a connection auxiliary material, for example, when a pillar and a beam (columnar material, the same applies hereinafter) are connected at a right angle, when the crossing angle moves from 90 degrees in the plane formed by the pillar and the beam. Then, the force acts so that the cross-sectional shape of the connection auxiliary material changes. For such external force,
The connection auxiliary material has the rigidity of the hollow molded article and the compression rigidity of the filling, and resists the force, so that the connection of the joint portion having high strength can be achieved. As will be described later, the method for producing the connection auxiliary material is reliable because both the hollow molded article and the filling material are prepared, or the latter, which is particularly rigid, has little quality fluctuation. A highly reliable connection can be achieved.

According to the present invention, the fiber-reinforced columnar members to be jointly connected, that is, the columns and the beams are required to have at least one abutment surface. Further, the connection auxiliary material is attached to the contact surface. An example of cross-sectional shapes of columns and beams that are convenient for mounting is shown in Fig. 4.
It was shown to. Next, the fiber-reinforced columnar material is most commonly formed by pultrusion of glass fiber and unsaturated polyester, but the present invention is not limited to this.

The hollow molding material of the connection auxiliary material used in the practice of the present invention is to be changed from a desired angle formed by a pillar and a beam or a beam and a beam (hereinafter, only the former including the latter case). It must have high rigidity. On the other hand, the fiber reinforced thermosetting resin is most preferable, but since the connection auxiliary material also increases the rigidity due to the presence of the filling material inside the connection auxiliary material,
If the hollow molding material is made thicker, a hard thermoplastic resin product can be used. The thicker the hollow molding material, the more preferable it is, but the fiber-reinforced thermosetting resin has a thickness of 3 mm to 6 mm, and the thermoplastic resin has a thickness of 6 mm because of ease of molding.
~ 15 mm is commonly used. Next, the length of the hollow molding material corresponding to one piece of the connection auxiliary material is usually the same width as the pillar or beam to be connected. There is no special limitation on the length of the portion where the hollow molding material contacts the pillar or beam, but it is usually 5 cm.
It is about 20 cm.

When the hollow molding material is a fiber-reinforced thermosetting resin, the material of the fiber is usually selected from glass, carbon, wholly aromatic nylon (aramid), etc. For operational reasons, glass fibers are most commonly used. The liquid resin is selected from α, β-unsaturated polyester, vinyl ester, urethane methacrylate, epoxy resin, resol type phenol resin and the like. Among these, it is recognized that the former two are particularly easy to use because of the price and the ease of molding operation. Of the various molding methods, the pultrusion molding method is the most advantageous method from the viewpoint of cost and quality fluctuation, since it is cut into a predetermined length while obtaining a fiber-reinforced hollow continuous molding. Further, it is also possible to produce a hollow molding material having a length of 0.5 m to several m for one connection auxiliary material by the conventionally known hand layup method, spray up method, filament winding method, or the like. It However, the former two have the drawback that the physical properties of the molding material tend to vary, and the latter have good physical properties, but have the disadvantage of high processing cost.

When the hollow molding material is a thermoplastic resin, suitable resins include polyvinyl chloride, polymethylmethacrylate, ABS, polypropylene, nylon and saturated polyester. The latter two of these resins are particularly preferable because they have toughness. The extrusion molding method is most suitable for molding a hollow molding material with these resins.

The hollow molding material can be easily manufactured according to the molding conditions in the ordinary publicly known technique, if the resin used and the molding method are different. Therefore, no special method is used.

The filler to be put in the hollow molding material is, as an inorganic substance, gypsum, cement mortar, concrete, foamed concrete, or those in which fibers such as carbon fiber and glass fiber are mixed. It is troublesome to carve out the pre-cured product so as to match the hollow shape of the hollow molded product and fill it. When they are hydrous and flowable,
It is an advantageous method to place it in a position where it does not interfere with bolting in the hollow and cure it there. As organic materials, resin concrete, BMC, SMC, polyvinyl chloride,
There are high molecular substances such as polypropylene and polymethylmethacrylate. In general, a preformed product is used as a filling material so that it can be inserted into the hollow portion. However, it is advantageous to fill the hollow portion of the resin concrete, BMC, and SMC in an uncured state and harden it. is there. Therefore, a curing agent, a peroxide, a curing accelerator, etc. can be selected and used by a known technique such as a hand layup method so that they can be cured at around room temperature or around 60 ° C. There are also cases where wood can be used as the filler, but since the lateral compression modulus of the wood is considerably lower than that of the polymeric material, it is not a very advantageous filler to increase the strength (rigidity) of the connection aid. I can't say.

The connecting auxiliary material is usually attached to the pillar and the beam after the filler is put in advance. However, depending on the shape of the filler, it can be inserted even after the bolt is attached to the connecting auxiliary material. . In that case, it is preferable to prepare a slip-out prevention means with an adhesive or the like so that the slip-out will not come out later. The present invention also includes the case where the packing material is added later. Next, bolts and nuts are used to tighten and fix the columns and beams using the connection auxiliary material. Although a method of mounting with an adhesive is also considered, it is not clear that the adhesive retains sufficient adhesive strength over a long period of time, so it is not possible to rely on the adhesive alone. The positions of the holes through which the bolts pass are in line with common sense when viewed from the surface where the connection auxiliary material contacts the columns and beams. There are various materials for the bolt in the above, such as iron, brass, stainless steel, composite material containing glass fiber, liquid polymer or ceramics, but these are selected in consideration of the purpose and environment in which the structure including columns and beams is used. It For example, in a greenhouse, anticorrosion zinc iron, in places where corrosion resistance is required, stainless steel, or composite material containing glass fiber, in buildings where it is necessary to avoid electromagnetic interference, it is preferable to use composite material bolts as well. is there.

The present invention will be described below with reference to embodiments.

[0018]

Example 1 FIG. 1 shows a case where a flange width,
It shows a state in which a column 1 and a beam 2 having a total height of 100 mm including a web are connected to a right angle joint. That is, the connection auxiliary material 3 is 100 mm in length made by extrusion molding of nylon.
The hollow molding material 4 and the filling material 5 are used. The length of contact between the pillar 1 and the beam 2 of the connection auxiliary member 3 is about 100.
mm, the wall thickness of the hollow molding material 4 is 15 m at a thick portion (a).
m, 10 mm in (b) in a thin place. Hollow molding 4
Place it in the bed and make a raised bottom of polyethylene with a height of 30 mm below it, and 30 m from the top edge on it.
A cement mud containing sand was added and cured to a height of m to obtain a filling 5. The connection auxiliary member 3 thus produced was clamped and fixed to the pillar 1 and the beam 2 using bolts 6 and 7 and nuts 8 and 8 to connect the joints 9 of the pillar 1 and the beam 2.

[0019]

[Embodiment 2] FIG. 2 is a sectional view of a pillar 1 having the same shape as that of Embodiment 1 using a connection auxiliary member 10 in which an L-shaped beam having a width of 80 mm is formed at an angle of 62 degrees. It shows a connected state. That is, the connection auxiliary material 10 is composed of a hollow molding material 11 made of α, β-unsaturated polyester and glass fibers and having a length of 80 mm by a pultrusion method, and a filling material 12 filled inside the hollow molding material 11. The lengths in contact with the pillars 1 and the beams 2 of the connection auxiliary material in FIG. 2 are 65 mm, the lengths of the bottom side and the top side are about 150 mm and 75 mm, and the wall thickness is 6 mm.
Is. In the same manner as in Example 1, a muddy liquid of calcined gypsum was added and cured to obtain a filling 12. The connection auxiliary member 10 thus produced was fixed to the pillar 1 and the beam 2 by using bolts 13 and 14 and nuts 15 so as to connect the joints of the pillar 1 and the beam 2.

[0020]

EXAMPLE 3 FIG. 3 shows two identical connection aids 16,16.
3 shows a state in which the pillar 1 and the beam 2 having the same shape as in Example 1 are connected using. In this case, the beam 2 is connected so as to be sandwiched by the connection auxiliary member 16. That is, the connection auxiliary material 16 is composed of a hollow molding material 17 made of bisphenol A type vinyl ester and glass fiber and having a length of 100 mm by a drawing method, and a filling material 18. The hollow molding material 17 has a cross section of 100 mm × 10 mm and a wall thickness of 5 mm.
Is. Prepare an X-shaped BMC molded product with a thickness of 10 mm, stack four of them and tie them together with a nylon thread (not shown in the figure), and insert them into the hollow molding material 17 at approximately the center of the hollow part. It was fixed with a system adhesive to obtain a filling 18.

After the connection auxiliary member 16 thus produced is mounted on the pillar 1 with the bolts 19, 20 and the nut 22, the nuts 22 are respectively screwed onto the beam 2 and tightened. Fixed In this case, the bolt 21 is common as shown in FIG.

The cross-sectional shapes of the pillars and the beams in the above-mentioned first and third embodiments are of the working type as shown in FIG. 4 (a), and the cross-sectional shape of the pillars in the second embodiment is as shown in FIG. 4 (a). The working shape was used, and the cross-sectional shape of the beam was L-shaped as shown in FIG. However, the cross-sectional shapes of the columns and the beams are not limited to those shown in FIGS. 4 (a) and 4 (e), and the cross-sectional shapes shown in FIGS. 4 (a), 4 (b), 4 (c), 4 (d),
There are various types such as (e), (f), and (g), and the connection assisting tool of the present invention can be used in the case of other sectional shapes currently used.

[0023]

According to the present invention, in the connecting method for connecting a plurality of columnar members which cannot be welded at a predetermined angle under the interposition of the connecting auxiliary member, the connecting auxiliary member is a cylindrical molded member. While having a high compressive rigidity filler inside,
A non-weldable columnar material characterized in that the fastening surface of the columnar material and the fastening surface of the connection auxiliary material are brought into contact with each other, and the columnar material and the connection auxiliary material are fastened and fixed with bolts and nuts. Since the connection method of the joint portion is described above, the rigidity of the joint portion connection is improved, and there is an effect that a firm joint can be configured.

Further, since the filling material is contained inside the tubular molding material as the connection auxiliary material, it is possible to obtain a sufficiently rigid connection auxiliary material even if the tubular material is made of synthetic resin or another material. There is.

Further, since the tubular material of the connection auxiliary material can be drawn or extruded, in those cases, there is also an effect that a homogeneous product can be mass-produced relatively inexpensively as compared with other molding methods.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an embodiment in which a filling material for a connection auxiliary material having a rectangular cross section according to the present invention is filled.

FIG. 2 is a partial cross-sectional view of an embodiment using a connection auxiliary member having a trapezoidal cross section.

FIG. 3 is a partial cross-sectional view of an embodiment in which a connecting auxiliary material in which a cross-shaped filler is filled in a tubular material having a rectangular cross section is used.

FIG. 4 is a partial cross-sectional view of the embodiment of the end faces of the column and the beam.
(A) The figure which shows a process type. (B) A figure showing H type. (C) The figure which shows U type. (D) A figure showing a square type. (E) The figure which shows L type. (F) A diagram showing a gate type. (G) The figure which shows the division type which divided the inside of the square type.

[Explanation of symbols]

 1 Pillar 2 Beam 3, 10, 16 Connection auxiliary material 4, 11, 17 Hollow molding material 5, 12, 18 Filler 6, 7, 13, 14, 19, 20, 21 Bolt 8, 15, 22 Nut

Claims (5)

[Claims] 1. A connection method for connecting a plurality of columnar members which cannot be welded together at a predetermined angle under the interposition of a connection auxiliary member, wherein the connection auxiliary member is inside a tubular molded member. A columnar member and a connection auxiliary member are tightened with bolts and nuts while a packing having a high compression rigidity is internally contained, and the tightening surface of the columnar member and the tightening surface of the connection auxiliary member are brought into contact with each other. A method for connecting a joint of a columnar material that cannot be welded, characterized by fixing. 2. The method for connecting a joint portion of a column member which cannot be welded according to claim 1, wherein the column member which cannot be welded is a fiber-reinforced synthetic resin column member or a fiber-reinforced cement column member. 3. A connection aid for connecting a joint portion of a columnar member which cannot be welded, characterized in that a filler having high compressive rigidity is contained inside a tubular molded material having at least two mutually-angled connecting surfaces. Material. 4. The tubular molding material is made of fiber reinforced synthetic resin,
The filler having high compressive rigidity is gypsum, cement mortar, concrete, foam concrete or fiber reinforced material thereof as the inorganic material, and resin concrete, other synthetic resin or these fiber reinforced material as the organic material. The connection auxiliary material for a joint portion of a columnar material which cannot be welded according to claim 3. 5. The non-weldable columnar material according to claim 3, wherein the tubular molding material is a pultrusion molding material or is formed by filling a filling material having high compression rigidity inside the pultrusion molding material. Joint connection auxiliary material.