JP2005314996A - Fastening structure of building unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening structure of a building unit which enables the building unit to be easily separated and transferred from a foundation. <P>SOLUTION: An insertion hole 14a is formed in an overhang 14 stretched from a lower surface of a column base part of the building unit 1. A screw hole 3a is formed in a base plate 3 fixed in the foundation 2 by an anchor 4 to correspond to the insertion hole 14a. A fastening bolt 5 is inserted into the insertion hole 14a of the overhang 14 and screwed to the screw hole 3a of the base plate 3. So that the column base part of the building unit 1 is connected with the foundation 2 through the base plate 3. Thus, the building unit 1 is easily separated and transferred from the base plate 3, that is, the foundation 2 by removing the fastening bolt 5 when the unit building is transferred. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fastening structure of a building unit for installation based on a steel frame type building unit.

  Conventionally, when a steel frame type building unit is installed on a foundation, as shown in FIG. 7, a sheath tube is embedded in the foundation 2 to form a fixing hole 2a, and the column base of the building unit 1 is formed in the fixing hole 2a. A method has been adopted in which anchor bolts 41 that are projected in advance on the lower surface of the portion are inserted, and grout is filled and fixed inside the fixing hole 2a (see, for example, Patent Document 1). In this case, the head of the anchor bolt 41 is screwed into the nut 42 inside the column base, and the nut 42 is welded to the inner surface of the column base so that the anchor bolt protrudes from the lower surface of the column base. It was in the state that was installed.

On the other hand, there is a need to separate the building unit from the foundation for the purpose of relocating the unit type building, for example, transferring the unit type house exhibited in the housing exhibition hall.
JP 2000-220149 A

  However, in the conventional method, since the head of the anchor bolt 41 is concealed and fixed inside the column base of the building unit 1, it is not possible to release the fixing and separate the building unit 1 from the foundation 2. It was impossible unless the building unit 1 was disassembled. In order to separate the building unit 1 without disassembling, the sealing material 19 around the anchor bolt 41 is passed from a slight gap between the foundation 2 and the building unit 1, or in some cases, from the gap widened across the foundation 2. In addition, after removing the hardened grout material, the anchor bolt 41 had to be cut, which required a lot of work.

  The subject of this invention is providing the fastening structure of the building unit which can isolate | separate and transfer a building unit from a foundation easily.

  In order to solve the above problems, the invention according to claim 1 is a fastening structure of a building unit 1 for fastening a building unit 1 to a foundation 2 as shown in FIG. 2, for example. It is fastened to a base plate 3 fixed to the foundation 2 by an anchor 4 with fastening bolts 5.

  Thus, the base plate 3 is fixed to the foundation 2 by the anchor 4, and the building unit 1 is fastened to the base plate 3 by the fastening bolts 5, so that the building unit 1 is attached to the foundation 2 via the base plate 3. It will be concluded. Therefore, when transferring the unit type building, the building unit 1 can be easily separated and transferred from the base plate 3, that is, the foundation 2 by removing the fastening bolt 5.

  The invention according to claim 2 is, for example, as shown in FIGS. 2 and 3, in the fastening structure of the building unit 1 according to claim 1, the lower part of the column base part (column base joining member 13) of the building unit 1. Is formed with an overhanging portion 14 projecting outward, and an insertion hole 14a is formed in the overhanging portion 14. The base plate 3 has a screw hole 3a at a position corresponding to the insertion hole 14a. The fastening bolt 5 is inserted into the insertion hole 14a and screwed into the screw hole 3a.

  In this way, the insertion hole 14a is formed in the overhanging portion 14 projecting outward from the lower surface of the column base portion of the building unit 1, and the screw hole 3a is formed in the base plate 3 so as to correspond to the insertion hole 14a. Then, the fastening bolt 5 is inserted into the insertion hole 14 a of the overhanging portion 14 and is screwed into the screw hole 3 a of the base plate 3, thereby fixing the column base portion of the building unit 1 to the foundation 2 via the base plate 3. Will be. Since the fastening bolt 5 is in a position where the foot portion projects, the fastening bolt 5 can be easily loosened and removed.

  According to a third aspect of the present invention, for example, as shown in FIG. 5, in the fastening structure of the building unit 1 according to the second aspect, a positioning pin 3 b is projected on the upper surface of the base plate 3. The column base is formed with a pin insertion hole (not shown) at a position corresponding to the positioning pin 3b, and the positioning pin 3b is inserted into the pin insertion hole.

  Thus, the positioning pin 3b is projected from the upper surface of the base plate 3, a pin insertion hole is formed in the column base so as to correspond to the positioning pin 3b, and the positioning pin 3b of the base plate 3 is inserted into the column base. By inserting into the hole, the positioning of the building unit 1 with respect to the foundation 2 becomes easy, and the building unit 1 can be accurately installed on the foundation 2.

  As for invention of Claim 4, as shown in FIG. 4, for example, in the fastening structure of the building unit 1 as described in any one of Claim 1 to 3, the anchor 4 has a screw thread on its head. 4a is formed, and a screw hole 3d is formed in the base plate 3 at a position corresponding to the head of the anchor 4, and the screw thread 4a is screwed into the screw hole 3d so that the base plate 3 An anchor 4 is projected from the top.

  In this way, the thread 4a formed on the head of the anchor 4 is screwed into the screw hole 3c formed on the base plate 3, and the anchor 4 is protruded from the base plate 3 so that the anchor is fixed to the foundation. Even when the unit type building is moved, not only the building unit 1 but also the base plate 3 can be removed, and the cost of the material can be reduced.

  As for invention of Claim 5, as shown, for example in FIG. 6, in the fastening structure of the building unit 1 as described in any one of Claim 1 to 4, the said baseplate 33 is the some adjacent to the horizontal direction. It is connected to the building unit 1.

  In this way, by connecting the base plate 33 to the plurality of building units 1 adjacent in the horizontal direction, the connection between the building unit 1 and the base plate 33, and the connection between the base plate 33 and the foundation 2 is integrated, and labor saving of members and construction is achieved. Can be achieved.

According to the present invention, since the building unit is fastened with the fastening bolt to the base plate that is fixed to the foundation by the anchor, it is easily separated from the base plate, that is, from the foundation by removing the fastening bolt when moving. Can do.
And the insertion hole is formed in the lower part of the column base part of a building unit in the overhang | projection part projected outward, the screw hole is formed in the base plate in the position corresponding to this insertion hole, and the fastening bolt is Since it is inserted through the insertion hole and screwed into the screw hole, the fastening bolt located at the protruding position of the column base can be easily loosened and removed.

  In addition, positioning pins project from the upper surface of the base plate, pin insertion holes are formed in the column bases at positions corresponding to the positioning pins, and the positioning pins are inserted into the pin insertion holes. And the building unit can be accurately installed on the foundation. Furthermore, a screw thread is formed in the head of the anchor, a screw hole is formed in the base plate at a position corresponding to the head of the anchor, and the screw thread of the head of the anchor is screwed into the screw hole of the base plate. Since the anchor is projected from the base plate, the base plate can be removed when the building unit is moved, and the cost of the material can be reduced.

  Further, since the base plate is connected to a plurality of building units adjacent in the horizontal direction, the connection between the building unit and the base plate, and the connection between the base plate and the foundation can be integrated, and labor saving of members and construction can be achieved.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
The unit type building is roughly configured to include a foundation 2, a plurality of building units 1 installed on the foundation 2, a roof (not shown) formed on the building unit 1, and the like. FIG. 1 is a perspective view showing a state in which four building units 1 on the first floor are installed on a foundation 2.

  As shown in FIGS. 2 and 4 (c), a sheath tube (not shown) whose bottom is closed is embedded in the concrete base 2 in the portion where the anchor 4 is installed. A fixing hole 2a is formed with the upper end opening facing upward. A nut (not shown) into which a height adjusting bolt 20 is screwed is embedded in the vicinity of the sheath tube. And the sealing material 19 is arrange | positioned on the upper surface of the foundation 2 so that the upper end opening part of these fixed holes 2a and the height adjustment bolt 20 may be enclosed. The sealing material 19 has a flat rectangular frame shape and is made of an elastic material such as rubber or sponge.

  A part of the building unit 1 is shown in FIG. 2, but four pillars 11 and four upper beams (not shown) and lower beams spanned between the upper ends and lower ends of the pillars 11. 12 is formed into a box-shaped frame having a steel frame ramen structure. The column 11 is joined to the upper beam and the lower beam 12 by a column head joining member (not shown) and a column base joining member 13 that form the column head and column base of the column 11.

  As shown in FIGS. 4A and 4B, the column base joining member 13 is a plate-shaped member, which is a side U-shaped body member 15, a plane L-shaped internal member 16, and a body member 15. The rib member 17 to be joined to the inner surface of the inner member 16 and the outer surface of the inner member 16 are combined in a box shape, and these are welded and joined.

  The foundation 2 and the building unit 1 are fastened by fastening the column base joint members 13 at the four corners of the building unit 1 to the base plates 3, 32, and 33 fixed to the foundation 2 by the anchors 4 with fastening bolts 5. It is done by being. FIG. 2 is a perspective view showing a fastening structure between the column base joining member 13 of one building unit 1 and the foundation 2 in the outer peripheral corner 21, and FIG. 6 shows four adjacent ones in the inner intersection 23. It is a perspective view which shows the fastening structure of each column base joining member 13 of the building unit 1 and the foundation 2. FIG. Note that the description and illustration of the fastening structure at the outer peripheral intersection 22 of the foundation are omitted since they are substantially the same as those at the outer peripheral corner 21 and the inner intersection 23.

  First, a fastening structure between the foundation 2 and the column base joining member 13 of the building unit 1 in the outer peripheral corner 21 will be described. As shown in FIGS. 2 and 4 (b), an overhanging portion 14 is formed on the lower surface of the main body member 15 of the column base joining member 13 so as to project outward. A reinforcing plate 18 having substantially the same area is attached to the lower surface of the main body member 15. An insertion hole 14 a for inserting the fastening bolt 5 is formed in the overhang portion 14 and the reinforcing plate 18.

  The base plate 3 is a rectangular plate that substantially corresponds to the cross section of the column 11 and the area of the overhanging portion 14, and is interposed between the foundation 2 and the column base joining member 13. As shown in FIGS. 2 and 3, the base plate 3 has a screw hole 3 a for screwing the fastening bolt 5 into a position corresponding to the insertion hole 14 a formed in the projecting portion 14 of the column base joining member 13. Is formed.

  At this time, as shown in FIG. 5, in order to facilitate the positioning of the building unit 1, positioning pins 3b can be provided on the upper surface of the base plate 3. In this case, a pin insertion hole (not shown) is formed in the body member 15 and the reinforcing plate 18 of the column base joining member 13 at a position corresponding to the positioning pin 3b.

  The anchor 4 has a screw thread 4 a formed at the head thereof, and the base plate 3 has a screw hole 3 c formed at a position corresponding to the head of the anchor 4. The anchor 4 protrudes from the lower surface of the base plate 3 by screwing the screw thread 4a into the screw hole 3d. When the head of the anchor 4 protrudes from the upper surface of the base plate 3, a recess 18a for accommodating the protruding head of the anchor 4 may be appropriately formed on the lower surface of the reinforcing plate 18 (FIG. 4). (See (b)).

  As shown in FIG. 4C, the base plate 3 is fixed to the base 2 by inserting the anchor 4 into the fixing hole 2 a formed in the base 2 and filling the grout material. Then, the fastening bolt 5 is inserted into the insertion hole 14a of the column base joining member 13 and screwed into the screw hole 3a of the base plate 3 to be tightened, whereby the column base joining member 13 and the base plate 3 of the building unit 1 are fastened. Has been. Thereby, the building unit 1 is fastened to the foundation 2.

  Next, the fastening structure with the column base joining members 13 of the four building units 1 adjacent to the foundation 2 at the internal intersection 23 will be described. As shown in FIG. 6, one base plate 33 is connected to the column base joining members 13 of the four building units 1 adjacent in the horizontal direction.

  The base plate 33 has a rectangular plate shape corresponding to the area including the cross section of the four pillars 11 and the overhanging portion 14. Screw holes 33a for screwing the fastening bolts 5 are formed at positions corresponding to the four insertion holes 14a formed in the projecting portions 14 of the respective column base joining members 13. Further, four positioning pins 33b project from the upper surface of the base plate 33, and pin insertion holes are formed in the main body member 15 and the reinforcing plate 18 of the column base joining members 13 at positions corresponding to the positioning pins 3b. (Not shown) is formed. The anchor 4 projects from the lower surface of the base plate 3 so as to be positioned at the center of the four columns 11, and the fixing hole 2 a of the foundation 2 is formed corresponding to the position of the anchor 4. Other configurations are substantially the same as the fastening structure between the foundation 2 and the building unit 1 at the outer peripheral corner 21.

  The base plate 33 is fixed to the foundation 2 by inserting the anchor 4 into the fixing hole 2 a formed in the foundation 2 and filling the grout material. Each building unit 1 is placed on the base plate 33 while the positioning pins 33 b are inserted through the pin insertion holes of the base plate 33. Each fastening bolt 5 is inserted into the corresponding insertion hole 14a and screwed into the screw hole 33a of the base plate 33 and tightened, whereby the column base joining members 13 and the base plate 33 of the four building units are fastened. Has been. Thereby, four building units are fastened to the foundation 2. Therefore, the connection between the building unit 1 and the base plate 33, and the connection between the base plate 33 and the foundation 2 are integrated, and it becomes possible to save labor of members and construction. Moreover, the installation work of a building unit becomes easy by attaching the positioning pin 33b which determines the positional relationship between each building unit 1 to the baseplate 33. FIG.

  Next, a construction method for fastening the building unit 1 to the foundation 2 will be described. First, the foundation 2 is constructed by placing concrete on site. In the foundation 2, a sheath tube (not shown) whose bottom is closed is embedded in a portion where the anchor 4 is installed, and a fixing hole 2 a is formed. A nut into which a height adjusting bolt 20 is screwed is embedded in the vicinity of the sheath tube. And the sealing material 19 is arrange | positioned so that the upper end opening part of these fixed holes 2a and the height level adjustment bolt 20 may be enclosed on the upper surface of the foundation 2. FIG.

  Further, the column 11 is connected to the upper beam and the lower beam 12 by the column head joint member and the column base joint member 13 to form a steel frame of the building unit 1. A material or the like is attached, and further, equipment materials such as a bath unit and a kitchen unit are incorporated into the building unit 1. And the insertion hole 14a is formed in the overhang | projection part 14 of the lower surface of the main body member 15 of the column base joining member 13. As shown in FIG.

  In addition, the base plate 3 provided with the anchors 4 is prepared. A screw thread 4a is formed in the head of the anchor 4, and screw holes 3a and 3c are formed in the base plate 3 at positions corresponding to the insertion holes 13a of the column base joining members 13 and the head of the anchor 4, respectively. . The screw thread 4 a of the head of the anchor 4 is screwed into the screw hole 3 c of the base plate 3, and the anchor 4 protrudes from the lower surface of the base plate 3.

  After filling the inside of the fixing hole 2a and the inside space of the sealing material 19 with the grout material, the anchor 4 projecting downward from the base plate 3 is inserted into the grout material in which leakage is prevented by the sealing material 19. . When the grout material solidifies, the foundation 2 and the base plate 3 are connected via the anchor 4.

  The building unit 1 is carried to the construction site, the building unit 1 is gradually lowered by a crane or the like, and the height position of the building unit 1 is adjusted with the height level adjusting bolt 20 while the screw hole 3a formed in the base plate 3 is used. Is mounted on the base plate 3 so that the insertion hole 14a of the column base joining member 13 is aligned.

  At this time, as shown in FIG. 5, positioning pins 3 b can be provided on the upper surface of the base plate 3. In this case, a pin insertion hole (not shown) is formed on the lower surface of the main body member 15 of the column base joining member 13 at a position corresponding to the positioning pin 3b. The building unit 1 is placed on the base plate 3 with a crane while the positioning pins 3b are inserted through the pin insertion holes. Thereby, positioning with respect to the foundation 2 of the building unit 1 becomes easy, and the building unit 1 can be accurately installed on the foundation 2.

  Thereafter, the fastening bolt 5 is inserted into the insertion hole 14 a of the column base joining member 13 and screwed into the screw hole 3 a of the base plate 3 to be tightened. Thereby, the fastening to the foundation 2 of the building unit 1 is completed.

  In the above construction method, the base plate 3 on which the anchor 4 protrudes in advance is fastened to the lower surface of the column base joining member 13 of the building unit 1 with the fastening bolt 5, and the anchor 4 is filled with the grout material. A method of gradually lowering the building unit 1 with a crane or the like so as to be inserted into the fixed hole 2a may be used.

  When moving the building unit 1, only the flooring near the column end is removed from the building unit 1, and the fastening bolt 5 is turned counterclockwise to separate the column base joining member 13 and the base plate 3. Is separated from foundation 2. Therefore, the building unit 1 can be easily separated from the foundation 2 simply by removing the fastening bolt 5. Further, since the stigma joining member 13 is arranged at the corner of the building unit 1, the fastening operation of the building unit 1 with the fastening bolt 5 can be easily performed, for example, by providing a small work opening at the corner. In addition, since the work opening may have a small area, the opening work performed after the connection work can be easily performed.

  Further, the base plate 3 is turned in the reverse direction to separate from the anchor 4. Even if the anchor is fixed to the foundation, not only the building unit 1 but also the base plate 3 can be removed, and the cost of the material can be reduced.

In the above embodiment, the column base joining member and the foundation are fastened, but the present invention is not limited to this, and the lower end of the column member not having the column base joining member Or it is good also as fastening a lower beam and a foundation.
Further, the column base joining member, the shape of the base plate, etc., the number of anchors, insertion holes, screw holes, etc. are arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

It is a perspective view for demonstrating installation of the building unit to a foundation. It is a disassembled perspective view which shows the fastening of a foundation and a building unit in an outer periphery corner part. It is a top view which shows a base plate. It is a figure for demonstrating joining of a column base joining member and a foundation via a base plate, (a) is a top view of a column base joining member, (b) is the same sectional view, (c) is a base plate and a foundation. It is sectional drawing. It is another Example of a baseplate. It is a disassembled perspective view which shows the fastening of a foundation and a building unit in an internal intersection. It is a figure explaining the fastening structure of the conventional building unit, (a) is a schematic sectional drawing which shows a construction condition, (b) It is sectional drawing which shows a fastening structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building unit 2 Foundation 2a Fixing hole 3, 32, 33 Base plate 3a, 33a Screw hole 3b, 33b Positioning pin 3c Screw hole 4 Anchor 4a Screw 5 Fastening bolt 11 Column 12 Lower beam 13 Column base joining member (column base part)
14 Overhanging portion 14a Insertion hole 21 Outer peripheral corner 22 Outer peripheral adjacent portion 23 Internal intersection

Claims (5)

A building unit fastening structure that is fastened on the basis of a building unit,
The building unit fastening structure, wherein the building unit is fastened with a fastening bolt to a base plate fixed to the foundation by an anchor. In the lower part of the column base part of the building unit, an overhanging part that projects outward is formed, and an insertion hole is formed in the overhanging part,
The base plate is formed with a screw hole at a position corresponding to the insertion hole,
The fastening structure for a building unit according to claim 1, wherein the fastening bolt is inserted into the insertion hole and is screwed into the screw hole. A positioning pin protrudes from the upper surface of the base plate,
The column base is formed with a pin insertion hole at a position corresponding to the positioning pin,
The building unit fastening structure according to claim 2, wherein the positioning pin is inserted into the pin insertion hole. The anchor has a thread on its head,
The base plate has a screw hole at a position corresponding to the head of the anchor,
The fastening structure for a building unit according to any one of claims 1 to 3, wherein an anchor is protruded from the base plate by screwing the screw thread into the screw hole.   The fastening structure for a building unit according to any one of claims 1 to 4, wherein the base plate is connected to a plurality of building units adjacent in the horizontal direction.

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