JPH07243239A - Building unit frame - Google Patents

Abstract

PURPOSE:To maintain proper mechanical strength and sufficiently cope with a large lateral or vertical load, even when the frame member of a column, a beam or the like is made of aluminum or aluminum alloy. CONSTITUTION:A lower floor building unit 2 constituting a unit type building 1 has a frame 11 formed out of four columns 4 erected at four corners, an upper beam 7 connecting the upper ends of the columns 4, and a lower beam 10 connecting the lower ends of the columns 4. In this case, the columns 4 and the lower beam 10 are made of aluminum or aluminum alloy. The columns 4 and the lower beam 10 are connected to each other via steel joints, while the columns 4 and the upper beam 7 are connected via steel joints 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skeleton of a building unit constituting a unit type building.

[0002]

BACKGROUND ART A building by a unit construction method is built by assembling building units produced in a factory in advance at a construction site. A general building unit includes four columns that are erected in four corners, and a frame composed of four upper beams and four lower beams that connect between upper ends and lower ends of these columns, A ceiling material, a floor material, an outer wall, an inner wall, and the like are attached to this frame to form a box shape. And, the frame members such as columns and beams of such building units are conventionally made of steel.

In such a unit-type building, adjacent building units in the lateral direction are joined by a joining plate extending between the upper ends of the pillars of each unit, and the lower-floor building unit and the upper-floor building unit are joined together. The joining is also performed at the joining plate. In addition, when a lateral load such as an earthquake occurs in such a unit-type building, the lateral load is applied to the joint between the pillar and the beam of each building unit joined by this joint plate through the joint plate. Will be transmitted to. That is, the lateral load is most concentrated on the joint plate and the joint, and also in the case of the vertical load, it is concentrated on the joint.

[0004]

By the way, if the frame members such as columns and beams are all made of steel, the weight of the building unit, and hence the weight of the building unit, becomes heavy. Therefore, the weight of the entire building unit is reduced. In order to do so, it is conceivable that the columns and beams that are the frame members of the building unit are made of aluminum (aluminum, hereinafter simply referred to as aluminum) or aluminum alloy. However, when the pillars and beams are made of aluminum or aluminum alloy, the mechanical strength of aluminum or aluminum alloy is smaller than that of steel, so the frame of the building unit itself is also made of steel in terms of mechanical strength. There is a problem that the structure of the manufactured building unit is inferior, and thus it is not possible to sufficiently cope with large lateral loads and vertical loads.

An object of the present invention is to provide a building which can ensure mechanical strength even when a frame member such as a pillar or a beam is made of aluminum or an aluminum alloy and can sufficiently cope with a large lateral load or a vertical load. To provide the framework for the unit.

[0006]

The skeleton of a building unit according to the present invention is a skeleton of a building unit that constitutes a unit type building, and is a skeleton of a building unit in which columns and beams are joined together through joining members. In the above, the column and the beam are formed of aluminum or an aluminum alloy, and the joining member is made of steel.

In the frame of this building unit, an electrically insulating member may be interposed between the joint member and the pillar and the beam.

Further, in the frame of this building unit, the joining member may be joined to the pillar and the beam by bolts. At this time, the direction of the bolt may be the longitudinal direction of the pillar and the beam, or the direction orthogonal to the longitudinal direction of the beam.

[0009]

In the present invention as described above, even if the pillar and the beam are the frame of the building unit formed of aluminum or aluminum alloy, the joining member for joining the pillar and the beam is made of steel, Mechanical strength can be secured at the joint between the column and the beam where the lateral load or the vertical load is most concentrated, and thus a large lateral load or vertical load can be sufficiently accommodated.

Further, in the frame of this building unit, when an electrically insulating member is interposed between the joining member and the pillar and the beam, water droplets and the like are attached across these two kinds of metal members. However, the electrolytic corrosion reaction does not occur. Therefore, the electrochemical corrosion of the two kinds of metal members is prevented.

Further, in the frame of the building unit,
When the joining member and the pillar and the beam are joined by a bolt installed in the longitudinal direction of the pillar and the beam, or in the direction orthogonal to the longitudinal direction of the beam, screw the male screw portion of the bolt into the mating female screw portion. Since this is sufficient, the work of joining the joining member to the pillar and the beam becomes easy.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention. As shown in FIG. 1, the unit-type building 1 includes a plurality of lower-floor building units 2 installed on a foundation (not shown),
It is configured by including a plurality of upper floor building units 3 placed on these lower floor building units 2.

The lower-floor building unit 2 connects four pillars 4 erected at the four corners and the upper ends of these pillars 4 to each other.
A skeleton 11 composed of an upper beam 7 composed of a long side beam 5 and a short side beam 6 and a lower beam 10 composed of two long side beams 8 and a short side beam 9 connecting the lower ends of the columns 4 to each other. I have it. Here, the pillar 4, the upper beam 7, and the lower beam 10 that constitute the skeleton 11.
Are all made of aluminum or aluminum alloy. Further, the pillar 4 and the long-side beam 8 and the short-side beam 9 of the lower beam 10 are made of a steel-made joint 20 which is a joining member arranged between them.
The column 4 and the long-side beam 5 and the short-side beam 6 of the upper beam 7 are joined to each other via a steel-made joint 40, which is a joining member arranged between them. These joints 20 and 40 are made of a combination of sheet metals and welded, or made of cast metal. The skeleton of the upper-floor building unit 3 has the same configuration as that of the building unit 2 although not shown.

FIG. 2 shows a state in which the joint 20 and the long side beam 8 and the short side beam 9 of the lower beam 10 in the lower part of the lower floor building unit 2 and the joint 20 and the pillar 4 are not yet joined. It is shown. In this figure, the connection 20 is a rectangular tubular body 21.
And a plate 22 fixed to the upper and lower ends of the main body 21,
And 23. Adjacent side surfaces 24 of the main body 21,
25, three bolt holes 24A, 25A are formed at equal intervals in the vertical direction.
The long-side beam 8 and the short-side beam 9 are joined to 25. Further, the side surfaces 24, 25 are formed with working holes 26 extending over the both sides 24, 25. Plates 22 and 23
Has a substantially square shape larger than the cross-sectional outer shape of the main body 21, and four bolt holes 22 </ b> A for joining with the columns 4 are opened in the upper plate 22.

The long-side beam 8 and the short-side beam 9 are each formed in a rectangular tube shape having a vertically long cross section and having substantially the same height dimension as the height dimension of the main body 21 in the joint 20, and the four corners of the inner surface thereof. The projections 8A and 9A having a C-shaped cross section are integrally formed with the long side beam 8 and the short side beam 9 during extrusion molding. A female screw (not shown) is cut on each of the protrusions 8A and 9A, and a bolt 27 (shown only on the beam 9 side) is screwed into the female screw.

At the ends of the beams 8 and 9 as described above, an electrically insulating member 30 is sandwiched, and an end plate 31 made of steel is provided.
32 are connected. This end plate 31, 32
Is formed into a rectangular shape having the same shape as the cross-sectional outer shape of the beams 8 and 9, and the upper and lower end surface portions of the rectangular plate 2 above and below the port 20.
It fits in between 2 and 23. At the four corners of the end plates 32, 33, the surfaces (the main body 21 of the joint 20
From the side), a counterbore hole (not shown) into which the bolt 27 is inserted and a subsequent bolt insertion hole are opened. Therefore, the head of the bolt 27 is inserted into the counterbore hole, and The end plates 31 and 32 are connected to the long-side beam 8 and the short-side beam 9 with the bolts 27 by screwing the male screw portions into the female screws of the protrusions 8A and 9A.

Further, each of the end plates 31 and 32 has
Three stud bolts 33 and 34 whose bolts are oriented in the longitudinal direction of the long-side beam 8 and the short-side beam 9 are attached, respectively. One end of these stud bolts 33, 34 is embedded in the end plates 31, 32, the other end projects from the surface of the end plates 31, 32, and can face the bolt holes 24A, 25A of the main body 21 in the joint 20. Has become. Therefore, each end plate 3
After fixing 1, 32 to the long-side beam 8 and the short-side beam 9, the end plates 31, 32 are brought into contact with the side faces 24, 25 of the main body 21 in the joint 20, and the stud bolt 3
3 and 34 are inserted into the bolt holes 24A and 25A, and a nut (not shown) is screwed into the stud bolts 33 and 34 from the working hole 26 of the main body 21, so that the beams 8 and 9 and the main body 21, that is, the joint 20 are separated. To be joined.

As the electrically insulating member 30, for example, vinyl chloride cut out in accordance with the outer shapes of the end plates 31, 32, etc. is used.
Bolt insertion holes (not shown) into which the bolts 27 are inserted are opened at four corners of 0. Here, the purpose of providing the electrically insulating member 30 is to prevent electrochemical corrosion between two kinds of metals. That is, the long side beam 8 made of aluminum or aluminum alloy and the steel end plate 31 and the aluminum or aluminum alloy beam 9 and the steel end plate 32 are provided without interposing the electrically insulating member 30. These members 8, 9, 3 are made to stick to each other.
If water droplets or the like that become the electrolyte solution adhere to 1, 32, a battery will be formed due to the difference in the electrode potentials of the two types of metals (aluminum or aluminum alloy and steel), and current will flow, causing electrochemical corrosion. Occur. The electrically insulating member 30 is
In order to prevent such electrochemical corrosion, it is provided between aluminum or an aluminum alloy and steel.

As shown in FIG. 2, the pillar 4 attached to the upper portion of the joint 20 is formed to have the same outer shape as the sectional outer shape of the main body 21. Further, projections 4A having a C-shaped cross section similar to the projections 8A and 9A are integrally formed with the pillar 4 at the four corners of the inner surface when the pillar 4 is extruded.
Although not shown, the protrusions 4A and 9A also have protrusions 4A and 9A.
Similar to A, a female screw for inserting a bolt similar to the bolt 27 is cut.

A steel end plate 37 is joined to the lower end portion of the column 4 with an electrically insulating member 36 sandwiched therebetween, as in the case of the beams 8 and 9 described above. The end plate 37 is formed in a square having the same outer shape as the pillar 4, and the connection between the end plate 37 and the pillar 4 is performed in the same manner as the above-described connection between the beams 8 and 9 and the end plates 31 and 32. Be seen. That is, a counterbore hole (not shown) and a bolt insertion hole following it are formed in the end plate 37. The head of the bolt similar to the bolt 27 is inserted into the counterbore hole, and the male screw portion of the bolt 27 is inserted. The end plate 37 and the column 4 are joined by being screwed into the female screw of the protrusion 4A.

The end plate 37 has four stud bolts 3 whose bolts are oriented in the longitudinal direction of the pillar 4.
8 is attached. These stud bolts 38
Is embedded in the end plate 37, the other end projects from the surface of the end plate 37, and can face the four bolt holes 22A of the plate 22 on the upper side of the joint 20. Therefore, after fixing the end plate 37 to the column 4, the stud bolt 38 is attached to the plate 22.
The column 4 and the joint 20 are joined to each other by inserting the nut into the stud bolt 38 from the working hole 26 side of the main body 21 of the joint 20 to the stud bolt 38. The electrical insulating material 36 is made by cutting vinyl chloride according to the outer shape of the end plate 37. The end plate 37 and the pillar 4 are connected to the four corners of the electrical insulating material 36, though not shown. A bolt insertion hole for a bolt similar to the bolt 27 is opened.

FIG. 3 shows a joint state between the joint 40 and the pillar 4 in the upper part of the building unit 2, and the joint 40 and the long side beam 5 and the short side beam 6 in the upper beam 7. As shown in FIG. 3, this joint 40 is different from the joint 20 in the lower part of the building unit 2 above and below the plate 4 above and below the joint 20.
Only the specifications of Nos. 2 and 43 are different, they are structurally the same, and the joint structure of the joint 40 and the beams 5 and 6 is also the same. Therefore, the same members as the members described in FIG. 2 are denoted by the same reference numerals, and the description of their joining method and the like is omitted or simplified, and only the upper and lower plates 42 and 43 of the joint 40 will be described.

The joint 40 is composed of a main body 41 having the same shape as the main body 21 and upper and lower plates 42 and 43 attached to the upper and lower ends thereof, and a lower plate 43.
Although not shown in the drawing, four bolt insertion holes are opened. The bolts 38 attached to the end plates 37 at the upper ends of the columns 4 can be inserted into these bolt insertion holes. Then, a nut 44 inserted from the working hole 26 of the main body 41 is screwed into the bolt 38.
Further, large and small guide pins 45 and 46 for a steel joining plate 47 that connects the building unit 2 and the adjacent building unit in the lateral direction are erected on the plate 42 above the joint 40, and A bolt insertion hole 48 for a connecting bolt that connects the upper and lower building units 2 and 3 at the joint plate 47 is opened.

In FIG. 4, in the unit type building 1 constructed by arranging the four lower floor building units 2 described above, the plane in which the corners where the four columns gather are connected by the joining plate 47 is shown. It is shown. 4 lower floor building units 2
As described above, the large and small guide pins 45 and 46 for the joint plate 47 are erected on the upper portion of the joint 40, and the bolt holes 48 for the upper and lower connecting bolts are opened. In this way, the building units 2 that are laterally adjacent to each other are connected to each other at the joint 40 by the joint plate 47. Further, since the joint 40 and the joint plate 47 are made of steel, the mechanical strength is increased by the synergistic action of the respective members at the location where the corners of the building unit are gathered. As a result, the unit building 1
Also in the above, the lateral load applied to the unit-type building 1 can be sufficiently coped with, and the bolts inserted into the bolt holes 48 of the joints 20 and 40 in the upper and lower floor building units 3 and 2 can be used for these building units 3 and 2. Can sufficiently cope with a vertical load generated by being connected at the joints 20 and 40.

According to this embodiment as described above, the following effects can be obtained. That is, the pillars 4, the upper beams 7, and the lower beams 10 that form the framework 11 of the building unit are made of aluminum or an aluminum alloy, and therefore the total weight of the building unit is light. Even if the frame 11 of this building unit is made of aluminum or aluminum alloy, since the joints 20 and 40 for joining the column 4 to the upper beam 7 and the lower beam 10 are made of steel, the column 4 and the upper beam are made of steel. 7. The mechanical strength can be secured at the joint with the lower beam 10, and therefore, a large lateral load, vertical load, etc. can be sufficiently accommodated.

Further, between the joints 20 and 40 and the beams 8 and 9, between the joints 20 and 40 and the beams 5 and 6, and between the joints 20 and 40.
Since the electrically insulating members 30 and 36 are respectively sandwiched between the 40 and the pillar 4, it is possible to prevent electrochemical corrosion between two kinds of metals (aluminum or aluminum alloy and steel).

Further, the joints 20 and 40, the pillar 4, and the joint 2
The joints 0, 40 and the beams 8, 9 and the joints 20, 40 and the beams 5, 6 are connected in the direction of the connecting bolts 38, 33, 34 provided on the pillar 4 and the beams 8, 9, 5, 6 side. Are columns 4 and beams 8,
Since it is in the longitudinal direction of 9, 5 and 6, bolts 38,
33 and 34 are inserted into bolt holes 24A and 25A (not shown in the port 40) opened on the ports 20 and 40 side, and nuts 44 and the like are inserted from the work holes 26 of the ports 20 and 40. , This nut 44 with bolts 38, 33, 34
It suffices if they are screwed together, so that the joining work is easy.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, the same members as those in the first embodiment are designated by the same reference numerals, and the description of the structure thereof will be omitted or simplified. In this embodiment, the joint between the joint and the beam is different from that in the above embodiment. That is, as shown in FIG. 5, the joint 40 ′ includes the main body 41 and the upper and lower plates 42, 43, and the adjacent side surfaces of the main body 41 are
First and second steel brackets 51 and 52 are provided so as to project in directions orthogonal to each other.

Each of the brackets 51 and 52 is formed in a rectangular tube shape having a longitudinal cross section having the same height as that of the main body 41, and the length of the upper beam 7'is provided inside the brackets 51 and 52. A side beam 5'and a short side beam 6'are inserted. A bolt hole 53 (shown only on the bracket 52) is formed on one side surface of each bracket 51, 52 in a direction orthogonal to the longitudinal direction of the beams 5 ', 6'. A female screw hole 54 (illustrated only in the beam 6 ') corresponding to the bolt hole 53 is formed. For this reason, after inserting the beams 5'and 6'into the brackets 51 and 52, the bolts 55 are inserted from the bolt holes 53 and screwed into the female screw holes 54, so that the beams 5'and 6'and the joint 40 '. And are to be joined. An electrically insulating member 56 made of vinyl chloride is attached to the ends of the beams 5'and 6'made of aluminum or aluminum alloy.

According to such an embodiment, the connections 20, 4
In addition to the effect that 0 can be easily joined to the beams 8, 9 and 5, 6, the ends of the beams 5 ', 6'can be mounted on the bracket 51,
Since the beams 5'and 6'are inserted into the inside of the beam 52 and are supported by surface contact, the beams 5'and 6'and the joint 40 '.
The effect of increasing the bonding strength with is obtained.

The present invention is not limited to the above-mentioned embodiments, but includes the following modifications as long as the object of the present invention can be achieved. For example, in the first embodiment, the bolt 3 that joins the joint 20 and the beams 8 and 9, the joint 40 and the beams 5 and 6, and the joint 20 and the pillar 4.
The bolts 3, 34 and the bolts 38 are provided along the longitudinal direction of the pillar 4, the beams 8, 9 and the like, but the invention is not limited to this, and bolt holes are formed in the end plates 31, 32, 37. At the same time, a nut is fixedly attached to the back side of the end plates 31, 32, 37, a bolt is inserted from the side of the joint 20, 40, and the bolt is screwed into the nut so that the joint 20, the beams 8, 9 and the joint are formed. The mouth 40 and the beams 5 and 6 may be joined. Even in this case, the same effect as described above that the joining work is easy can be obtained.

Further, in the first embodiment, the end plates 31, 32, 37 are made of steel, but the invention is not limited to this, and the end plates 31, 32, 37 may be made of aluminum or aluminum alloy. Good. In this case, as shown in phantom lines in FIG. 2, the end plates 31, 32, 37
Electrically insulating members 30 ′ and 36 ′ may be interposed between and the connection 20. Even in this case, the above-described effect that the electrochemical corrosion of the two kinds of metals can be prevented can be obtained.

Further, in the second embodiment, the beams 5'and 6'are inserted into the first and second brackets 51 and 52, but the present invention is not limited to this. '
It may be of a type in which the outer periphery of the first and second brackets 51 and 52 is covered and joined. Even in this way, the beam 5 ',
The same effect as described above is obtained in that the strength of the joint portion between 6'and the joint 40 'is increased.

Further, although vinyl chloride is used for the electric insulating members 30, 36, 56 in each of the above-mentioned embodiments, the present invention is not limited to this. For example, an insulating material such as synthetic rubber, wood, or natural rubber may be used. Of course, the surface of the beam 8, 9 or the like that comes into contact with the end plates 31, 32, 37 may be subjected to a film treatment by an electrolytic method (alumite), or the surface may be coated with an insulating paint or the like. In short, any material can be used as long as it can prevent the electrochemical corrosion of two kinds of metals between the joints 20, 40, 50 and the beams 8, 9, 5, 6, 5 ', 6'.

[0035]

As described above, according to the framework of the building unit of the present invention, even if the pillar and the beam are the framework of the building unit formed of aluminum or aluminum alloy,
Since the joining member that joins the column and the beam is made of steel, it is possible to secure mechanical strength at the joint between the column and the beam where the lateral load or vertical load is most concentrated. It can fully handle vertical loads.

Further, in the frame of this building unit, since the electrically insulating member is interposed between the joining member and the pillar and the beam, water droplets and the like adhere to these two kinds of metal members. However, the electrolytic corrosion reaction does not occur. For this reason,
There is an effect that the electrochemical corrosion that occurs in the two kinds of metal members is prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a unit-type building according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of the first embodiment.

FIG. 3 is a perspective view showing a main part of the first embodiment.

FIG. 4 is a plan view showing a connected state of a plurality of building units in the first embodiment.

FIG. 5 is an exploded perspective view showing a main part of a second embodiment of the present invention.

[Explanation of symbols]

 2 Lower floor building unit 4 Column made of aluminum or aluminum alloy 7 Upper beam made of aluminum or aluminum alloy 10 Lower beam made of aluminum or aluminum alloy 11 Frame of building unit 20, 40, 40 ' Mouth 30,36,56 Electrical insulation member 33,34,55 Beam bolts 38 Column bolts

Claims (5)

[Claims] 1. A skeleton of a building unit constituting a unit-type building, in which a pillar and a beam are joined together through a joining member, wherein the pillar and the beam are made of aluminum or an aluminum alloy. At the same time, the joint member is made of steel, and the skeleton of the building unit. 2. The skeleton of the building unit according to claim 1, wherein an electrically insulating member is interposed between the joining member and the pillar and the beam. 3. The skeleton of the building unit according to claim 1, wherein the joining member and the pillar and the beam are joined by bolts. 4. The skeleton of a building unit according to claim 3, wherein the direction of the bolt is a longitudinal direction of the pillar and the beam. 5. The skeleton of a building unit according to claim 3, wherein the direction of the bolt is a direction orthogonal to the longitudinal direction of the beam.