JP2009209626A - Structure for tightening and securing member to be secured to installation surface - Google Patents

Abstract

Fastening a fixed member to an installation surface that can absorb (and eliminate) the displacement of the hole position of the member with respect to the anchor bolt with a simple operation, and can firmly fix the member to the installation surface. Get a fixed structure.
An embedded anchor bolt 38 is erected from a foundation or soil concrete wall 38. A beam cut portion 32 is formed in the divided beam 34 which is the floor large beam 18, and an excessive escape hole 40 is formed in the lower flange 34C of the tip portion. In this excessive escape hole 40, a convex portion 42B of the auxiliary metal fitting 42 is rotatably fitted. A long hole 44 through which the embedded anchor bolt 38 is inserted is formed in the base portion 42A of the auxiliary metal fitting 42. A nut is screwed in a state where the anchor bolt 38 is inserted into the long hole 44, whereby the tip of the split beam 34 is fixed to the installation surface.
[Selection] Figure 1

Description

  The present invention relates to a structure for fastening and fixing a fixed member to an installation surface.

  The following Patent Document 1 discloses a technique that enables the installation position of fixtures on the floor surface to be adjusted. Briefly, in this prior art, when fixing fixtures such as cupboards and work tables installed in offices or stores to the floor, a fixed holding plate bent in a crank shape in a side view and And a stabilizing member comprising a disc-shaped stabilizing plate and a shaft erected on the shaft core portion thereof.

  A male screw is formed on the outer peripheral surface of the shaft of the stabilizing member, and is screwed into a screw hole formed in advance on the lower surface of the fixture. On the other hand, a long hole is formed in the lower part of the fixed holding plate. When the anchor bolt is screwed into the bolt insertion hole formed in the floor surface through the long hole, the fixed holding plate is fixed to the floor surface. The Furthermore, a U-shaped notch is formed in a plan view in the high-order part of the fixed holding plate, and both are connected by inserting a shaft of a stabilizing member attached in advance to the lower part of the fixture in this notch. It has become so.

According to the above configuration, in consideration of earthquake resistance, if you want to fine tune the horizontal position and height of the fixture floor after installing the fixture, by rotating the disc-shaped stabilizer plate of the stabilizer, Since the amount of screwing into the screw hole of the shaft changes, the height can be adjusted. Further, the horizontal position can be changed by loosening the anchor bolt and changing the relative position of the anchor bolt within the long hole in the lower portion of the fixed holding plate.
JP-A-9-201245 JP 11-229396 A

  In the case of the above prior art, when the shaft of the stabilizing member screwed into the screw hole on the lower surface of the fixture is displaced from the initial plan with respect to the anchor bolt screwed into the bolt insertion hole on the floor surface, the fixed holding plate By rotating and sliding, the deviation can be absorbed, but the structure is complicated and the operation is complicated.

  Further, the stabilizing member and the fixed holding member are connected by inserting the shaft of the stabilizing member into the notch of the fixed holding member, and the fixing point to the floor surface of the fixture is offset from the fixture. For this reason, it is difficult to firmly fix the fixture on the floor surface, and it is easy to apply a load such as twisting to the fixture.

  In consideration of the above facts, the present invention can absorb (further eliminate) displacement of the hole position of the member with respect to the anchor bolt with a simple operation, and can firmly fix the member to the installation surface. It is an object to obtain a fastening and fixing structure to the installation surface.

  The fastening and fixing structure of the fixed member to the installation surface according to the invention of claim 1 includes an embedded anchor bolt standing from the installation surface, the embedded anchor bolt being inserted, and an opening area being perpendicular to the axis of the embedded anchor bolt. A fixed member provided with a plate-like fixing part in which an oversized hole larger than the cross-sectional area in the direction is formed, and a planar shape is formed larger than the oversized hole and arranged in contact with the fixing part, and A fastening auxiliary member in which a through hole of the embedded anchor bolt can be inserted and a long hole capable of changing a relative position with the through end is formed, an excessive hole of a fixed member in the embedded anchor bolt, and A nut that fastens and fixes the fixing portion between the installation surface and the fastening auxiliary member by being screwed into the penetrating end portion of the embedded anchor bolt in a state where the long hole of the fastening auxiliary member is inserted. And wherein the Rukoto.

  According to a second aspect of the present invention, in the structure for fastening and fixing the fixed member to the installation surface according to the first aspect, the oversized hole is a circular hole, and the fastening auxiliary member is rotatably fitted in the oversized hole. The convex part to be formed is formed, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, in the fastening and fixing structure to the installation surface of the fixed member according to the second aspect, the elongated hole passes through the center of rotation of the convex portion and in the vicinity of the outer periphery of the oversized hole in plan view. It is formed so that it may reach.

  According to a fourth aspect of the present invention, in the fastening and fixing structure to the installation surface of the fixed member according to the third aspect, the elongated hole is located at a position where the starting end and the terminal end are spaced apart on the outer periphery of the oversized hole or in the vicinity thereof. It is formed in a certain arc shape.

  According to a fifth aspect of the present invention, in the fastening fixing structure to the installation surface of the fixed member according to any one of the second to fourth aspects, the rotation adjustment of the fastening auxiliary member is provided on the surface of the fastening auxiliary member. It is characterized in that a projection-like operation part for assisting the operation at the time is provided.

  The invention of claim 6 is the structure for fastening and fixing the fixed member to the installation surface according to any one of claims 1 to 5, wherein the fixed member is a structure of a building unit constituting a unit building. It is a material.

  The invention according to claim 7 is the structure for fastening and fixing the fixed member to the installation surface according to claim 6, wherein the structural material is a floor beam of a building unit arranged on the first floor portion and at a midway portion in the longitudinal direction. It is a floor beam provided with a beam cut portion removed by cutting, and the fixing portion is a lower flange of the floor beam.

  According to the first aspect of the present invention, the excessive hole formed in the fixing portion of the fixed member is a hole larger than the cross-sectional area in the direction perpendicular to the axis of the embedded anchor bolt erected from the installation surface. Therefore, even if the fixing position of the fixed member with respect to the embedded anchor bolt is deviated from the normal position, the excessive hole can be passed through the embedded anchor bolt as long as it is within the range of the excessive hole.

  A fastening assisting member that is disposed in contact with the fixed portion of the fixed member and that has a planar shape larger than the excessive hole is superimposed on the excessive hole. At this time, the elongated hole of the fastening auxiliary member is passed through the embedded anchor bolt. Thereby, the position shift of the fixed member with respect to the embedded anchor bolt is absorbed. After that, with the oversized hole of the fixed member and the long hole of the fastening auxiliary member inserted, the nut is screwed into the through end of the embedded anchor bolt, thereby fixing the fixed surface between the installation surface and the fastening auxiliary member. The fixing part of the member can be fastened and fixed.

  As described above, according to the present invention, the shift between the embedded anchor bolt and the hole position of the mounted member can be absorbed (and eliminated) only by using the fastening auxiliary member in which the long hole is formed. In addition, since the fastening force by the embedded anchor bolt and the nut acts directly on the fixing portion of the fixed member via the fastening auxiliary member, the fixing portion can be firmly fixed to the installation surface.

  According to the second aspect of the present invention, the oversized hole is a circular hole, and the convex portion formed in the fastening auxiliary member is rotatably fitted in the oversized hole, so that the fastening auxiliary member is rotated. The displacement between the embedded anchor bolt and the hole position of the member to be fixed can be absorbed (or eliminated) only by this.

  According to the third aspect of the present invention, since the elongated hole is formed so as to pass through the rotation center of the convex portion and reach the vicinity of the outer periphery of the oversized hole in plan view, by rotating the fastening auxiliary member, It is possible to reliably find a position where the deviation between the embedded anchor bolt and the hole position can be absorbed (and eliminated).

  According to the fourth aspect of the present invention, since both the start end and the end end of the long hole are formed in an arc shape at a spaced position on the outer periphery of the oversized hole or in the vicinity thereof, the fastening auxiliary member is rotated. Thus, the member to be fixed can be moved relative to the embedded anchor bolt while being guided by the long hole.

  According to the fifth aspect of the present invention, when adjusting the rotation of the fastening assisting member, it can be rotated by applying a finger to the protruding operation portion. For this reason, the position adjustment work using the fastening auxiliary member is facilitated.

  According to the sixth aspect of the present invention, since the member to be fixed is the structural material of the building unit constituting the unit building, the anchor bolt is fixed when the anchor bolt embedded in the installation surface and the structural material are fastened and fixed. Even if the hole position is shifted, the fastening and fixing work can be performed quickly.

  According to the seventh aspect of the present invention, the present invention is applied to a floor beam provided with a beam cut portion which is a floor beam of a building unit arranged on the first floor portion and is cut and removed at an intermediate portion in the longitudinal direction. Applies.

  Conventionally, when anchoring a floor beam provided with a beam cutting part, a hole is drilled at a position offset with respect to the beam core of the floor beam, and an all anchor or chemical anchor is installed, and this is fixed to the floor beam. However, if multiple connection brackets are used, the floor beam cannot be fastened and fixed directly to the anchor bolt, so that it cannot be firmly fixed and the beam is twisted. However, according to the present invention, since the floor beam can be embedded and fixed directly to the anchor bolt, the floor beam can be firmly fixed to the installation surface and the floor beam is not easily twisted. Become.

  In addition, when the floor beam to be applied is a floor beam such as a dirt floor, after anchor bolts are buried in the dirt tile section, when a load is applied due to a resident's walking vibration etc., a mortar or tile However, according to the present invention, since the fastening auxiliary member is set on the lower flange of the floor beam, even if a load such as walking vibration of the occupant is applied to the soil tile part, the mortar or tile is cracked. Is less likely to occur.

  As described above, the fastening and fixing structure to the mounting surface of the fixed member according to the present invention according to the first aspect of the present invention absorbs (and eliminates) the displacement of the hole position of the member with respect to the anchor bolt with a simple operation. In addition, there is an excellent effect that the member can be firmly fixed to the installation surface.

  The fastening and fixing structure to the installation surface of the member to be fixed according to the second aspect of the present invention has an excellent effect that the workability can be improved and the working time can be shortened.

  The fastening and fixing structure to the installation surface of the fixed member according to the third aspect of the present invention has an excellent effect that the workability can be further improved and the working time can be further shortened. .

  The fastening and fixing structure to the installation surface of the fixed member according to the present invention described in claim 4 eliminates the deviation between the embedded anchor bolt and the hole position by moving the fixed member relative to the embedded anchor bolt. It has an excellent effect of being able to.

  The fastening and fixing structure to the installation surface of the member to be fixed according to the fifth aspect of the present invention has an excellent effect that the workability can be further improved and the working time can be further shortened.

  The fastening and fixing structure to the installation surface of the member to be fixed according to the sixth aspect of the present invention has an excellent effect that the fastening and fixing work to the embedded anchor bolt of the structural material of the building unit can be quickly performed.

  The fastening and fixing structure to the installation surface of the fixed member according to the present invention according to claim 7 is capable of strengthening the fastening and fixing state to the installation surface of the floor beam of the building unit and a load such as torsion on the floor beam. In addition, when applied to soil or the like, it has an excellent effect that it can suppress or eliminate the occurrence of cracks in mortars and tiles.

  [First Embodiment]

  Hereinafter, an embodiment of a fastening and fixing structure to an installation surface of a fixed member according to the present invention will be described with reference to FIGS.

  FIG. 4 shows a partial schematic perspective view of a building unit 12 constituting the first floor portion of the unit house 10 as a unit building. As shown in this figure, the building unit 12 is a box-type unit, and has two types of floors, a column 14 standing at four corners, and a bottom frame of the column 14 connected to each other to form a floor frame 16. The long beams 18 and 20 and the long and short ceiling beams 24 and 26 that connect the upper ends of the pillars 14 to form the ceiling frame 22 are provided as a frame.

  A leading anchor bolt 28 protrudes vertically downward from the lower end of each column 14, and this leading anchor bolt 28 is inserted into an anchor hole formed in a foundation (not shown), and grout material is injected and fixed to the foundation. It has come to be.

  In the building unit 12 described above, a beam cut portion 32 is formed at an intermediate portion in the longitudinal direction of the floor girder 18 on one long side in order to form the interstitial space 30. By forming the beam cut portion 32, the one long side floor large beam 18 is divided into two. Hereinafter, this divided portion is referred to as “divided beam 34”.

  As shown in FIG. 1 and FIG. 2, each split beam 34 as a member to be fixed is a grooved steel, a web 34 </ b> A disposed on the outdoor side, a pair of upper and lower upper flanges 34 </ b> B, and a fixing portion. And a lower flange 34C. The lower flange 34C of the free end side (the side opposite to the side joined to the column 14) of the split beam 34 is fastened and fixed to an embedded anchor bolt 38 pre-embedded in the foundation or soil concrete 36, and will be described in detail below. explain. Since the fixing structure on the free end side of any split beam 34 is the same, the fixing structure on the free end side of the split beam 34 on the side indicated by the arrow A in FIG. 4 will be described.

  As shown in FIG. 2, the lower flange 34 </ b> C on the free end side of the split beam 34 has a sufficiently large diameter with respect to the outer diameter of the embedded anchor bolt 38 (about 4 to 5 times the outer diameter of the embedded bolt 38). An excessive escape hole 40 as an excessively large hole is formed. The excessive escape hole 40 is a circular hole. In other words, the opening area of the excessive escape hole 40 is set sufficiently larger than the cross-sectional area of the embedded anchor bolt 38 in the direction perpendicular to the axis.

  As shown in FIGS. 1 to 3, an auxiliary fitting 42 as a fastening auxiliary member is attached to the excessive escape hole 40 from the upper side of the lower flange 34 </ b> C. The auxiliary metal fitting 42 is a disc-shaped base portion 42 </ b> A having a diameter larger than the inner diameter of the excessive escape hole 40, and a disc that is integrally formed on the lower surface side of the base portion 42 </ b> A and fitted into the excessive escape hole 40. And a convex portion 42B. The thickness of the convex portion 42B is set to be equal to or less than the plate thickness of the lower flange 34C (the axial dimension of the excessive escape hole 40). Further, the outer diameter of the base portion 42A is such that the outer periphery of the base portion 42A does not interfere with the web 34A when the convex portion 42B is fitted into the excessive escape hole 40 (about 15 to 20 mm larger than the inner diameter of the excessive escape hole 40). Is set to

  Further, the auxiliary metal fitting 42 is formed with a straight type long hole 44 penetrating the base portion 42A and the convex portion 42B. The starting end portion of the long hole 44 coincides with the axial core portion of the base portion 42A, and the terminal end portion of the long hole 44 is set near the outer periphery of the convex portion 42B. That is, the long hole 44 is formed on the radius of the auxiliary metal fitting 42 (radial direction). The hole width of the long hole 44 is set to be slightly larger than the shaft diameter of the embedded anchor bolt 38.

  An embedded anchor bolt 38 is inserted into the elongated hole 44 of the auxiliary metal fitting 42 and a nut 48 (see FIG. 2) is screwed together, whereby the lower flange 34C of the split beam 34 is connected to the auxiliary metal fitting 42 and the foundation or soil concrete 36. It is the structure fastened and fixed in the state inserted | pinched between.

  (Action / Effect)

  Hereinafter, the operation and effect of the present embodiment will be described.

  The tip anchor bolt 28 protruding from the lower end of the column 14 of the building unit 12 is inserted into an anchor hole formed in the foundation as usual. And a grout material is inject | poured in an anchor hole, and the lower end part of the pillar 14 is fixed to a foundation by hardening.

  When the fixing work of the leading anchor bolt 28 is completed, the fixing work on the free end side of the split beam 34 is performed. The embedded anchor bolt 38 tightly coupled to the free end side of the split beam 34 is pre-embedded in the foundation or soil concrete 36, and the position thereof cannot be changed. On the other hand, the anchor bolt insertion hole originally formed in the lower flange 34C of the free end side of the split beam 34 is an embedded anchor bolt due to accumulation of assembly errors at the time of installation of the building unit 12, assembly errors of the building unit 12, and the like. Often shifted from the position of 38.

  However, in the case of this embodiment, since the excessive escape hole 40 having a diameter sufficiently larger than the outer diameter of the embedded anchor bolt 38 is formed in the lower flange 34C of the free end side of the split beam 34, the embedded anchor bolt 38 has On the other hand, the embedded anchor bolt 38 can be inserted into the excessive escape hole 40 even if the hole position of the bolt insertion hole of the collar formed originally is shifted.

  Therefore, first, the excessive escape hole 40 of the lower flange 34C is put on the embedded anchor bolt 38 (inserted). At this time, the convex portion 42 </ b> B is fitted into the excessive escape hole 40 while the anchor bolt 38 is inserted into the elongated hole 44 of the auxiliary metal fitting 42.

  As described above, in the present embodiment, the displacement of the embedded anchor bolt 38 from the hole position of the bolt insertion hole formed on the free end side of the split beam 34 only by using the auxiliary metal fitting 42 in which the long hole 44 is formed. Can be absorbed. Moreover, since the fastening force by the embedded anchor bolt 38 and the nut 48 acts directly on the lower flange 34C of the split beam 34 via the auxiliary metal fitting 42, the lower flange 34C is firmly fixed to the upper surface of the foundation or soil concrete concrete 36. can do. As a result, according to the present embodiment, the displacement of the hole position of the lower flange 34C of the split beam 34 with respect to the embedded anchor bolt 38 can be absorbed by a simple operation, and the lower flange 34C is erected on the soil concrete wall 36. The embedded anchor bolt 38 can be firmly fixed.

  In the present embodiment, the excessive escape hole 40 is a circular hole, and the convex portion 42B formed in the auxiliary metal fitting 42 is rotatably fitted in the excessive escape hole 40. The displacement between the embedded anchor bolt 38 and the hole position of the lower flange 34C of the split beam 34 can be absorbed simply by relatively rotating the mounting position in the escape hole 40 in the circumferential direction. Can do). As a result, according to the present embodiment, workability can be improved and work time can be shortened.

  Further, in this embodiment, the long hole 44 is formed so as to pass through the rotation center of the convex portion 42B and to reach a predetermined position on the outer periphery of the excessive escape hole 40 in a plan view, which is shown in FIG. As described above, by relatively rotating the auxiliary metal fitting 42, it is possible to reliably find a position where the deviation between the embedded anchor bolt 38 and the hole position can be absorbed. As a result, according to the present embodiment, workability can be further improved, and the working time can be further shortened.

  Moreover, in this embodiment, since this structure was used for fixing the split beam 34 of the building unit 12 constituting the unit house 10, the formation position of the bolt insertion hole of the collar originally formed in the split beam 34 is an embedded anchor bolt. Even if it deviates from 38, the fastening operation of the split beam 34 can be performed quickly.

  Here, as shown in FIGS. 6 and 7, conventionally, when anchoring the floor girder 52 provided with the beam cutting portion 50, a drill is made at a position offset with respect to the beam core of the floor girder 52. Although the hole 54 was opened, the all anchor (or chemical anchor) 56 was installed, and this and the floor large beam 52 were connected with two types of connection brackets 58 and 59, the connection brackets 58 and 59 are used. Although the floor girder 52 cannot be fastened and fixed directly to the all anchor (or chemical anchor) 56, it cannot be firmly fixed, and the floor girder 52 is liable to be twisted. For example, the split beam 34 of the floor beam 18 can be directly fastened and fixed to the embedded anchor bolt 38, so that the split beam 34 can be firmly fixed to the installation surface and the floor big beam 52 is hardly twisted. It made.

  Furthermore, when the floor girder 52 to be applied is, for example, a floor girder 52 such as a dirt floor, when the anchor bolt is buried in the dirt tile section 60 and then a load is applied due to a resident's walking vibration or the like. Although cracks are likely to occur in the mortar and tile, according to the present embodiment, the auxiliary metal fitting 42 is set on the lower flange 34C of the split beam 34. Therefore, even if a load such as walking vibration of a resident is applied, the mortar or tile Cracks are less likely to occur. That is, according to the present embodiment, the fastening and fixing state of the building unit 12 to the installation surface of the split beam 34 can be strengthened, and a load such as torsion on the split beam 34 can be reduced. When applied to, cracks in mortars and tiles can be suppressed or eliminated.

  [Second Embodiment]

  Hereinafter, the second embodiment of the structure for fastening and fixing the fixed member to the installation surface according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8 (A), in the second embodiment, the peripheral edge portion of the excessive escape hole 40 formed in the lower flange 34C of the split beam 34 described above has a hook-like shape (viewed in a side view). In this case, an upside-down L-shaped stopper 46 is erected. The stoppers 46 can be formed by cutting and raising when the excessive escape holes 40 are formed as an example. Further, the stopper 46 functions as a stopper for preventing the convex portion 42B of the auxiliary metal fitting 42 from being detached from the excessive escape hole 40 until the nut 48 is screwed into the embedded anchor bolt 38. As long as the state where the convex portion 42B is fitted in the excessive escape hole 40 is maintained, it may be provided only at two places at intervals of 180 degrees, or may be provided at four places at intervals of 90 degrees.

  Corresponding to the stopper 46, rectangular cutouts 66 in a plan view are formed on the outer peripheral portion of the base portion 42 </ b> A of the auxiliary metal fitting 42 at a predetermined interval (in this embodiment, an interval of 120 degrees). The notch 66 is set to a size that allows the stopper 46 to be inserted in the vertical direction.

  (Action / Effect)

  According to the above configuration, when attaching the auxiliary metal fitting 42 to the excessive escape hole 40 of the lower flange 34C of the split beam 34, the embedded anchor bolt 38 is inserted into the elongated hole 44, and then each notch 66 is fixed. Corresponding to the tool 46, the base 42A is mounted so as to be covered from above. Then, as shown in FIG. 8B, if the auxiliary metal fitting 42 is rotated in a state where the convex portion 42B is fitted in the excessive escape hole 40, the outer peripheral portion of the base portion 42A is engaged with the stopper 46. Is done.

  Also with the above configuration, the same operations and effects as those of the first embodiment described above can be obtained. In addition, it is possible to prevent the convex portion 42B of the auxiliary metal fitting 42 from being detached from the excessive escape hole 40 until the nut 48 is screwed into the embedded anchor bolt 38.

  In the above-described configuration, the notch 66 is set to have a slightly wider width than the stopper 46. However, the three notches 66 are inserted into the elongated hole 44 and the three anchor bolts 38 are inserted. In consideration of workability when the parts are inserted into the stoppers 46, it is advantageous to set the notch width of the notch 66 to be somewhat larger than the width of the stopper 46. However, if the notch width of the notch 66 is set to be too wide, the range of the outer peripheral portion of the base portion 42A that can be used as an allowance for the stopper 46 is reduced. Therefore, it is determined in consideration of the balance between convenience and securing of the engagement allowance. Is good.

  [Third Embodiment]

  Hereinafter, the third embodiment of the fastening and fixing structure to the installation surface of the fixed member according to the present invention will be described with reference to FIGS. 9 and 10. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 9 and 10, the third embodiment is characterized in that a long hole 70 having a curved shape is formed in the auxiliary metal fitting 42 instead of the straight type long hole 44. The long hole 70 has an arc shape that passes through the center of the auxiliary metal fitting 42 and has both end portions (one end portion 70A as a start end portion and the other end portion 70B as a termination portion) near the inside of the outer periphery of the convex portion 42B. .

  A pair of protrusions 72 are formed on the base portion 42 </ b> A of the auxiliary metal fitting 42 as an operation portion by cutting and raising on both sides of the long hole 70. When the pair of protrusions 72 are formed by cutting and raising, the base part 42A and the convex part 42B are formed separately, and the base part 42A and the convex part 42B are integrated after the protrusion 72 is formed.

  (Action / Effect)

  Even with the above configuration, as in the first embodiment described above, even if the embedded anchor bolt 38 is displaced from the center of the auxiliary metal fitting 42, the embedded anchor bolt 38 can be inserted into the elongated hole 70 to be fastened. It becomes.

  In addition, according to the present embodiment, since the elongated hole 70 is formed in a curved shape, the fastening position of the split beam 34 to the embedded anchor bolt 38 is displaced in the horizontal direction in FIG. Can be eliminated).

  For example, as shown in FIG. 10 (A), if the embedded anchor bolt 38 is displaced to the left in the drawing (on the one end portion 70A side) with respect to the split beam 34, a finger is placed on the pair of protrusions 72 of the auxiliary metal fitting 42. The auxiliary metal fitting 42 is rotated in the clockwise direction (the direction of arrow P1 in FIG. 10A). Then, the embedded anchor bolt 38 is guided by the inner peripheral surface of the long hole 70 and relatively moves in the long hole 70 toward the other end portion 70B, so that the split beam 34 is on the left side of the drawing (FIG. 10A). It is displaced in the direction of arrow Q1).

  On the other hand, as shown in FIG. 10B, if the embedded anchor bolt 38 is shifted to the right side (the other end portion 70B side) in the drawing with respect to the split beam 34, the pair of protrusions 72 of the auxiliary metal fitting 42 are fingered. The auxiliary metal fitting 42 is rotated counterclockwise (in the direction of arrow P2 in FIG. 10B). Then, the embedded anchor bolt 38 is guided by the inner circumferential surface of the long hole 70 and relatively moves in the long hole 70 toward the one end portion 70A, and the split beam 34 is moved to the right side in the figure (the arrow in FIG. 10B). Q2 direction).

  If the split beam 34 cannot be displaced by the force of a finger, it may be rotated using a jig such as a bar using the opening formed when the projection 72 is formed.

  As described above, according to the present embodiment, it is possible to reduce or eliminate the shift of the fastening position between the embedded anchor bolt 38 and the split beam 34. In the third embodiment, the nut 48 may be screwed and fixed to the embedded bolt 38 in the position shown in FIGS. 10 (A) and 10 (B). In this case, as in the first embodiment and the second embodiment, the auxiliary metal fitting 42 is used as a mode of absorbing the displacement.

  In the present embodiment, since the pair of protrusions 72 are formed on the auxiliary metal fitting 42, the auxiliary metal fitting 42 can be rotated by applying a finger to the protrusion 72. For this reason, the position adjustment work using the auxiliary metal fitting 42 becomes easy. Therefore, workability can be further improved and work time can be further shortened.

  [Supplementary explanation of the embodiment]

  (1) In the above-described embodiment, the case where the floor large beam 18 (divided beam 34) forming the beam cut portion 32 is fixed to the embedded anchor bolt 38 in the building unit 12 provided with the entrance soil portion 30 is described as an example. The application object of the present invention is not limited to this, and an embedded anchor bolt is set at any position in the longitudinal direction of a normal beam in which a beam cut portion is not formed, and the beam is fixed to the embedded anchor bolt. It is also applicable to cases. For example, in a specific building unit, when a floor frame with a rectangular frame shape is configured with only floor beams, and only a part of the floor beams are provided or not, the support strength of the floor beams is increased. In order to raise the support strength of the building unit, it is possible to set the embedded anchor bolt and fix the floor girder in addition to tightening with the anchor bolt attached below the pillar.

  (2) In the above-described embodiment, the present invention is applied to the unit building 10. However, the present invention is not limited to this, and the present invention may be applied to a building constructed by a method other than the unit method. Furthermore, you may apply this invention, when fixing the to-be-fixed member used for the use completely different from the structural material of a building to the anchor bolt erected from the installation surface.

  (3) In the third embodiment described above, the pair of operation protrusions 72 are formed. However, the protrusions 72 are not necessarily required and may be omitted.

  (4) In the first embodiment and the second embodiment described above, the straight type long hole 44 is used, and in the third embodiment, the curved type long hole 70 is used. However, the shape of the long hole is limited to these. Without limitation, various shapes can be adopted.

  (5) In the above-described embodiment, the convex portion 42B is integrally formed with the base portion 42A of the auxiliary metal fitting 42. However, the present invention is not limited to this, and the convex portion 42B may be separate from the base portion 42A and the two may be integrated. . Moreover, the convex part does not necessarily need to be solid, and may be formed in an annular shape. Furthermore, the present invention described in claim 1 includes those in which no convex portion exists. In this case, for example, it is preferable to set a detachment prevention means such as the stopper 46 described in the second embodiment.

  (6) In the above-described embodiment, the convex portion 42B fitted in the excessive escape hole 40 is formed in a circular shape in plan view so as to be rotatable, but it is not necessarily circular in plan view. The shape in which the circumference is corrugated, or the shape in which a protrusion protruding outward in the radial direction is formed at every predetermined angle on the circumference. Even in these cases, the excessive escape hole 40 may be formed into a wave shape corresponding to a circular shape or a substantially gear shape from a circular shape so that fitting at a predetermined pitch is possible.

It is a perspective view which expands and shows the principal part of the fastening fixing structure to the installation surface of the to-be-fixed member which concerns on 1st Embodiment. It is a longitudinal cross-sectional view (2-2 sectional view taken on the line of FIG. 4) which expands and shows the principal part of the fastening fixing structure to the installation surface of the to-be-fixed member which concerns on 1st Embodiment. (A) is a top view of an auxiliary | assistant metal fitting, (B) is the side view, (C) is CC sectional view taken on the line of (A). It is a partial schematic perspective view of the building unit provided with the beam cut part. It is a top view of the auxiliary metal fitting for demonstrating the effect of the fastening fixation structure to the installation surface of the to-be-fixed member which concerns on 1st Embodiment. It is a perspective view which shows the beam fixing structure which concerns on contrast. It is a longitudinal cross-sectional view which shows the beam fixing structure which concerns on the comparison shown by FIG. It is a top view which expands and shows the principal part of the fastening fixing structure to the installation surface of the to-be-fixed member which concerns on 2nd Embodiment. (A) is a top view of an auxiliary metal fitting, (B) is the side view, and (C) is a CC line sectional view of (A) concerning a 3rd embodiment. It is explanatory drawing which shows the usage of the auxiliary metal fitting shown in FIG. 9, (A) is a top view which shows the case where the embedded anchor bolt has shifted | deviated to the left side with respect to a beam core, (B) is embedded with respect to a beam core. It is a top view which shows the case where the anchor bolt has shifted | deviated to the right side.

Explanation of symbols

10 Unit housing (unit building)
12 Building units 18 Floor beams (floor beams, fixed members, structural materials)
32 Beam cut part 34 Split beam (fixed member, structural material)
34C Lower flange (fixed part)
36 Foundation or soil concrete (installation surface)
38 Embedded anchor bolt 40 Excessive escape hole (Excessive hole)
42 Auxiliary metal fitting (fastening auxiliary member)
42B Convex 44 Long hole 48 Nut 70 Long hole 70A One end 70B The other end 72 Projection

Claims (7)

Embedded anchor bolts erected from the installation surface;
A fixed member having a plate-like fixing portion in which an oversized hole is formed in which the embedded anchor bolt is inserted and the opening area is larger than the cross-sectional area in the direction perpendicular to the axis of the embedded anchor bolt;
The planar shape is larger than the oversized hole and is placed in contact with the fixed part. Furthermore, the penetrating end of the embedded anchor bolt can be inserted and the position relative to the penetrating end can be changed. A fastening auxiliary member formed with a long hole, and
The fixing portion is fixed between the installation surface and the fastening auxiliary member by being screwed into the penetrating end portion of the embedded anchor bolt in a state where the excessive hole of the fixed member and the long hole of the fastening auxiliary member are inserted into the embedded anchor bolt. A nut to fasten and fix,
A structure for fastening and fixing a fixed member to an installation surface, characterized by comprising: The oversized hole is a circular hole, and the fastening auxiliary member is formed with a convex portion that is rotatably fitted in the oversized hole.
The fastening fixing structure to the installation surface of the to-be-fixed member of Claim 1 characterized by the above-mentioned. The long hole is formed so as to pass through the rotation center of the convex part and reach the vicinity of the outer periphery of the oversized hole in plan view.
The fastening fixing structure to the installation surface of the member to be fixed according to claim 2. The elongated hole is formed in an arc shape in which the start end and the end are both spaced apart on the outer periphery of the oversized hole or in the vicinity thereof.
The fastening fixing structure to the installation surface of the to-be-fixed member of Claim 3 characterized by the above-mentioned. On the surface of the fastening auxiliary member, there is provided a protruding operation portion that assists the operation at the time of rotation adjustment of the fastening auxiliary member.
The fastening fixing structure to the installation surface of the to-be-fixed member of any one of Claims 2-4 characterized by the above-mentioned. The fixed member is a structural material of a building unit constituting a unit building.
The fastening fixing structure to the installation surface of the to-be-fixed member of any one of Claims 1-5 characterized by the above-mentioned. The structural material is a floor beam provided with a beam cut portion which is a floor beam of a building unit arranged on the first floor portion and is cut and removed at an intermediate position in the longitudinal direction.
And the said fixing | fixed part is the lower flange of the said floor beam,
The fastening fixing structure to the installation surface of the to-be-fixed member of Claim 6 characterized by the above-mentioned.

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