JP6177052B2 - Reinforcing bars and unit buildings - Google Patents

Description

  The present invention relates to a reinforcing bar applied to a rising portion of a foundation and a unit type building in which a plurality of building units are installed on a foundation configured using the reinforcing bar.

  A unit type building is a building constructed by arranging a plurality of building units on a foundation and connecting the building units to each other. The building unit is formed by connecting floor beams, ceiling beams, and columns in a rectangular parallelepiped shape, and is installed by placing each column on a rising part of the foundation. Further, the floor beam is disposed along the foundation on the rising portion of the foundation, and is fixed to the rising portion by an anchor bolt at a position near the column, for example.

  Here, when the building unit rolls on the foundation in the event of an earthquake, etc., the thickness direction of the rising portion where the anchor bolt is buried is caused by vibration and stress transmitted from the building unit via the anchor bolt. There is a risk of the corners coming off. Therefore, as a measure for preventing such peeling, Patent Document 1 proposes a technique in which peeling prevention bars are arranged on both sides in the thickness direction with an anchor bolt sandwiched inside the rising portion.

JP 2011-190590 A

  However, when a building unit rolls in the event of an earthquake or the like, there is a risk that peeling will occur in the vicinity of the place where the column is installed in the rising part as the column installed on the rising part rolls. For example, when the column is inclined obliquely, the edge of the lower end of the column is in line contact with the upper surface (top end) of the rising portion, and an excessive load is locally applied to the upper surface, so that the corner portion of the rising portion is It may be peeled off.

  In order to solve such a problem, the device described in Patent Document 1 merely prevents peeling around the anchor bolt at the rising portion, and cannot prevent peeling around the column installation location at the rising portion. In addition, it is conceivable that reinforcing bars are individually arranged around the anchor bolt and around the column installation place at the rising portion, but in this case, the reinforcing bar arrangement work becomes complicated and the work man-hour is increased. There is a fear.

  The present invention has been made in view of the above circumstances, and a reinforcing bar capable of preventing foundation peeling at both the periphery of the anchor portion and the periphery of the column installation location while suppressing an increase in work man-hours. The main purpose is to provide unit buildings.

  In order to solve the above-mentioned problem, the reinforcing bar of the first invention is applied to a rising part in a reinforced concrete foundation, and in a longitudinal direction of the foundation with respect to an installation position of a pillar of a building installed on the rising part. A reinforcing bar for an anchor part that reinforces an anchor part that fixes the building to the rising part at a predetermined anchor position that is shifted, and is configured by integrating a plurality of reinforcing bars in combination with each other, Provided on both sides in the thickness direction of the rising portion sandwiching the anchor portion inside the rising portion, each of which is composed of the reinforcing bar and includes a pair of peeling prevention portions extending in the longitudinal direction of the foundation, At least one of the peeling prevention parts extends to the same position as the installation location of the pillar in the longitudinal direction of the foundation. And wherein the Rukoto.

  According to the present invention, since the pair of peeling prevention portions are provided on both sides in the thickness direction of the rising portion with the anchor portion interposed therebetween, it is possible to prevent foundation peeling around the anchor portion. In addition, since at least one of the pair of peeling prevention portions extends to the column installation location in the longitudinal direction of the foundation, the foundation peeling around the column installation location can also be prevented. And since the reinforcing bar is comprised as an integrated object which consists of a some reinforcing bar, if the said reinforcing bar is arrange | positioned in the standup | rising part, the circumference | surroundings of an anchor part and the installation location periphery of a pillar can be reinforced at once. . Therefore, in this case, it is possible to prevent foundation peeling at both the periphery of the anchor portion and the periphery of the column installation location while suppressing an increase in the number of work steps.

  The reinforcing bar of the second invention is the reinforcing bar according to the first invention, wherein the rising portion of the foundation is bent in an L shape in a plan view, and the bent portion of the rising portion is a portion of the rising portion. The corner portion is formed with a protruding corner, and each portion extending from the corner portion in a direction orthogonal to each other is a non-corner portion, and the pillar is installed in the corner portion, and the non-corner portion The anchor position is set, and in the non-corner portion where the anchor position is set, the pair of peeling prevention portions are provided on both sides in the thickness direction of the non-corner portion sandwiching the anchor portion, respectively. Of the pair of peeling prevention portions, the peeling prevention portion disposed at least near the protruding corner in the thickness direction is arranged in the longitudinal direction of the non-corner portion. Characterized in that it extends to the installation location and the position of said post in na unit.

  According to the present invention, the rising portion of the foundation is bent in an L shape in plan view, and the pillar is installed on the corner portion that becomes the bent portion, and extends from the corner portion in directions orthogonal to each other. An anchor position is set at the corner. And, in the non-corner portion where the anchor position is set, at least near the protruding corner in the same direction among the pair of peeling prevention portions provided on both sides in the thickness direction of the non-corner portion (rise portion) across the anchor portion The arranged peeling prevention part extends to the same position as the installation position of the pillar in the longitudinal direction of the foundation. Thereby, it is possible to prevent the foundation from being peeled off at the corner portion of the corner portion where the peeling due to the shaking of the column is particularly likely to occur.

  The reinforcing bar of the third invention is the reinforcing bar according to the second invention, wherein each of the non-corner portions is provided with the anchor position, and each of the anchor positions is provided with the pair of peeling prevention portions. In each of the non-corner portions, each of the peeling prevention portions disposed near the corners in the thickness direction of the non-corner portion extends to the same position as the installation location of the column in the longitudinal direction of the non-corner portion. And it is connected at right angles in the vicinity of the protruding corner.

  According to the present invention, a pair of peeling prevention portions is provided for each anchor position set in each non-corner portion of the rising portion, and each peeling prevention portion disposed near the protruding corner in each of the non-corner portions. Each extend to the same position as the pillar, and are connected at right angles near the corner. In this case, it is possible to further enhance the peeling prevention effect at the protruding corner portion.

  Further, according to the above configuration, it is possible to prevent peeling around each anchor portion and around the pillar installation location at a stroke. Therefore, the work man-hour is greatly reduced in preventing the peeling of each portion. be able to.

  According to a fourth aspect of the present invention, in the first or second aspect of the invention, in the first or second aspect of the invention, the anchor is provided on each side of the rising portion of the foundation on both sides of the column in the extending direction in which the rising portion extends. Positions are set, and each of the anchor positions is provided with the pair of peeling prevention portions on both sides in the thickness direction across the anchor portion, and at least one of the peeling prevention portions is peeled off. The prevention part is extended to the same position as the installation location of the column.

  In the rising portion of the foundation, anchor positions may be set on both sides of the column installation location in the extending direction in which the rising portion extends. In the present invention, in this configuration, a pair of peeling prevention portions is provided for each anchor position, and at least one of the peeling prevention portions provided for each anchor position is a pillar. It extends to the installation location. In this case, it is possible to prevent peeling around each anchor portion and around the pillar installation location at a stroke, and it is possible to greatly reduce the work man-hours in preventing these portions from peeling off.

  In any one of the first to fourth inventions, the reinforcing bar of the fifth invention is provided on both sides of the thickness direction with the anchor portion sandwiched inside the rising portion, and each has the peeling preventing portion. A pair of anti-strip bars and a connecting portion configured by the reinforcing bars and connecting the pair of anti-strip bars, and the connecting portion is formed by a main bar extending in the longitudinal direction of the foundation inside the rising portion. It is supported from below.

  According to the present invention, the stripping preventing muscles having the stripping preventing portions are provided on both sides of the foundation thickness direction with the anchor portion interposed therebetween, and the respective stripping preventing muscles are connected to each other by the connecting portions. And since the connecting portion is supported from below by the main reinforcement extending in the longitudinal direction of the foundation, when the reinforcement is placed on the rising portion of the foundation, the reinforcement can be arranged in a state of being supported by the principal reinforcement, and the arrangement Work can be made easier.

  In addition, since the connecting portion that connects the anti-strip bars on both sides of the base thickness direction is also used as a supporting portion that supports the main reinforcing bars, the configuration is simplified compared to the case where the supporting portion is provided separately from the connecting portion. be able to.

  In addition, it is desirable to provide a plurality of connecting portions at a predetermined interval along the direction in which the main bars extend. By doing so, since the plurality of connecting portions can be supported by the main reinforcing bars, the reinforcing bars can be supported in a stable state, and the reinforcing bar arrangement work can be further facilitated.

  A reinforcing bar of a sixth invention is the reinforcing bar according to any one of the first to fifth inventions, wherein a plurality of the reinforcing bars are provided in each of the pair of peeling prevention parts, the vertical part extending downward from the peeling prevention part, and the anchor A crack preventing portion provided across the plurality of vertical portions on both sides in the thickness direction across the portion, and at least one crack preventing portion among the crack preventing portions on both sides in the thickness direction Extends in the longitudinal direction of the foundation to the same position as the place where the pillar is installed.

  According to this invention, since the crack prevention part is provided in the thickness direction both sides of the standing part which pinched | interposed the anchor part, in addition to a peeling prevention function in the circumference | surroundings of an anchor part, a crack prevention function can be provided. In addition, since at least one of the crack prevention parts on both sides in the thickness direction extends to the same position as the column installation position in the longitudinal direction of the foundation, the crack prevention part peels off around the column installation position. The prevention effect can be enhanced.

  According to a seventh aspect of the present invention, in the sixth aspect of the present invention, in the sixth aspect, a part of the plurality of vertical portions is disposed at the same position as the installation location of the column in the longitudinal direction of the foundation. Features.

  According to the present invention, some vertical portions of the plurality of vertical portions are arranged at the same position as the pillar in the longitudinal direction of the foundation. Can be increased.

  According to an eighth aspect of the present invention, in the sixth or seventh aspect, the rising portion of the foundation is bent in an L shape in plan view, and the bent portion of the rising portion is the It is a corner part formed with a protruding corner of the rising part, each part extending in a direction orthogonal to each other from the corner part is a non-corner part, and the pillar is installed in the corner part, The anchor position is set in the non-corner portion, and the non-corner portion in which the anchor position is set has the pair of peeling prevention portions on both sides in the thickness direction of the non-corner portion sandwiching the anchor portion. Among the pair of peeling prevention parts, at least the peeling prevention part arranged near the projecting corner in the thickness direction is the longitudinal direction of the foundation. The vertical portion of the plurality of vertical portions provided in the peeling prevention portion near the protruding corner is disposed near the protruding corner, and is disposed at the protruding corner. It is characterized by extending vertically.

  According to the present invention, in the configuration in which the pillar is installed on the corner portion of the rising portion of the foundation, a part of the vertical portion is disposed near the corner of the corner portion, and extends vertically along the corner of the corner. Therefore, the peeling prevention effect can be enhanced particularly at the protruding corner portion where peeling easily occurs.

  A unit type building of a ninth invention comprises the foundation having the rising part in which the reinforcing bar of the third invention is embedded, and the building installed on the rising part, and the building has a floor It is a unit type building configured by connecting a plurality of building units having beams, ceiling beams and columns to each other, and the columns of the building units are installed on the corner portion, Two floor beams extending in a direction orthogonal to each other from the pillar are respectively disposed on the non-corner portions along the non-corner portions, and the floor beams are respectively disposed at the anchor positions of the non-corner portions. The non-corner part is fixed by the anchor part.

  In a unit-type building, a pillar of a building unit is installed on a corner portion of a rising portion of a foundation, and two floor beams extending in a direction orthogonal to each other from the pillar are respectively raised by an anchor portion (non-corner portion) in the non-corner portion. ) May be fixed. Therefore, in the present invention, the reinforcing bar of the third invention is applied to such a configuration, and the reinforcing bar is used to reinforce the foundation around each anchor portion and around the column installation location. In this case, the same effect as the third invention can be obtained as a unit type building.

The perspective view which shows the state in which the pillar of the building unit was installed on the foundation. The perspective view which shows the bar arrangement structure of a foundation. The perspective view which shows the structure of a reinforcing bar. The perspective view which shows the installation state of the reinforcing bar in a standing part. The top view which shows the installation state of the reinforcing bar in a standing part. Sectional drawing which shows the installation state of the reinforcing bar in a standing part. The perspective view which shows a building unit. The top view which shows the installation state of the reinforcing bar in a standing part.

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the present embodiment, a unit type building is embodied as a building. A unit type building is a building constituted by connecting a plurality of building units to each other. First, the structure of the building unit will be described with reference to FIG. FIG. 7 is a perspective view showing a building unit.

  As shown in FIG. 7, the building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that connect the upper end and the lower end of each column 21, respectively. And. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. The ceiling girder 22 and the floor girder 23 are made of channel steel having a U-shaped cross section, and are installed so that their openings face each other.

  A plurality of small ceiling beams 25 are bridged between the large ceiling beams 22 on the long sides of the building unit 20 at predetermined intervals. Similarly, a plurality of floor beams 26 are bridged between the large floor beams 23 on the long sides of the building unit 20 at predetermined intervals. The ceiling beam 25 and the floor beam 26 are provided at the same interval and at positions corresponding to the upper and lower sides, respectively. For example, the ceiling beam 25 is made of lip groove steel, and the floor beam 26 is made of square steel. The ceiling member 27 is supported by the ceiling beam 25 and the floor member 28 is supported by the floor beam 26.

  The building 10 of this embodiment is configured by arranging a plurality of the above-described building units 20 on the foundation and connecting the plurality of building units 20 to each other. Hereinafter, the installation configuration of the building unit 20 on the foundation will be described with reference to FIG. FIG. 1 is a perspective view showing a state in which the pillar 21 of the building unit 20 is installed on the foundation. Moreover, in FIG. 1, it has shown in the state which separated the building unit 20 from the foundation.

  As shown in FIG. 1, the foundation 11 is formed of a reinforced concrete cloth foundation, and includes a footing portion 12 (see FIG. 2 and the like) embedded in the floor base plate, and a rising portion 13 rising upward from the footing portion 12. Have The rising portion 13 of the foundation 11 extends so as to form an L shape in plan view. In the rising portion 13, a bent portion bent in an L shape is a corner portion 14, and each portion extending from the corner portion 14 in a direction orthogonal to each other is a linear portion 15. In the corner portion 14, a protruding corner 16 and a corner 17 of the rising portion 13 are formed. In other words, a quadrangular columnar portion where the corner 16 and the corner 17 are located diagonally corresponds to the corner portion 14. It has become. In the following description, one of the two straight portions 15 is denoted by A and the other straight portion 15 is denoted by B. Further, the straight line portion 15 corresponds to a non-corner portion.

  A column 21 of the building unit 20 is installed on the corner portion 14 in the rising portion 13. Although not shown, the column 21 is installed on the corner portion 14 via a flat setting plate, for example. Two floor beams 23 extending in directions orthogonal to each other are connected to the column 21. Among these floor beams 23, one floor beam 23 is disposed along the straight portion 15A on the straight portion 15A, and the other floor beam 23 is disposed along the straight portion 15B on the straight portion 15B. ing. Each of these floor beams 23 is fixed to the straight portions 15A and 15B by anchor bolts 18 at predetermined positions in the vicinity of the columns 21. In this case, the predetermined positions correspond to the anchor positions U1 and U2, respectively, and the anchor positions U1 and U2 are arranged on both sides of the foundation extending direction X (see FIG. 5) across the installation location K of the column 21. Yes. The foundation extending direction X is an extending direction in which the rising portion 13 of the foundation 11 extends in an L shape.

  The anchor bolt 18 is fixed in a state of projecting downward from the floor girder 23 with respect to the floor girder 23, and the projecting lower portion is inserted into the anchor hole 19 embedded in the rising portion 13 (straight portions 15A and 15B). Has been. The anchor hole 19 is made of a sheath tube, and is provided in an open state at the top end of the rising portion 13. The anchor bolt 18 is fixed to the rising portion 13 by solidifying a filler (grout) such as mortar filled in the hole 19 while being inserted into the anchor hole 19.

  In the following, A is given to the reference numerals of the anchor bolt 18 and the anchor hole 19 on the straight portion 15A side (anchor position U1 side), and the anchor bolt 18 and the anchor hole on the straight portion 15B side (anchor position U2 side). B is added to the reference numeral 19. The anchor bolt 18 and the anchor hole 19 constitute an anchor portion.

  Next, the bar arrangement structure of the foundation 11 will be described with reference to FIG. FIG. 2 is a perspective view showing a bar arrangement structure of the foundation 11.

  As shown in FIG. 2, foundation reinforcement is arranged inside the foundation 11. The foundation reinforcement is arranged for each of the straight portions 15A and 15B of the foundation 11, respectively. The base reinforcing bar is composed of a base reinforcing bar 31 provided substantially horizontally in the footing part 12 and a rising reinforcing bar 32 connected in a state of being raised substantially vertically with respect to the base reinforcing bar 31. ing. In addition, the bar arrangement structure in this embodiment is a single bar arrangement.

  The base reinforcing bar portion 31 extends in the width direction of the foundation 11 and is fixed to the pair of base reinforcing bars 33 by welding or the like, extending in parallel to the longitudinal direction of the foundation 11. A plurality of base muscles 34 are provided. A plurality of base muscles 34 are provided at predetermined intervals in the longitudinal direction of the foundation 11. The base strength bars 33 and the base bars 34 are formed of deformed reinforcing bars generally used for cloth foundations.

  The rising bar arrangement portion 32 includes an upper main bar 36, an abdominal muscle 37, and a lower main bar 38 as horizontal reinforcing bars extending in the longitudinal direction of the foundation 11, and a rib 39 as a vertical reinforcing bar extending in the vertical direction. Specifically, the upper main bar 36 is arranged at the upper end of the rising bar arrangement portion 32, the lower main bar 38 is arranged at the lower end, and the abdominal muscle 37 is arranged substantially in the center thereof. The upper main muscle 36, the abdominal muscle 37, and the lower main muscle 38 are fixed to the stirrup muscle 39 by welding or the like and are held at intervals. A plurality of streaks 39 are formed at predetermined intervals in the longitudinal direction of the foundation 11. The base muscle 34 and the rib muscle 39 are installed at substantially the same interval. The upper main muscle 36, the abdominal muscle 37, the lower main muscle 38, and the stirrup 39 are formed by deformed reinforcing bars generally used for cloth foundations.

  The rising reinforcing bar 32 is provided in a state where the lower main bar 38 is placed on the base bar 34 of the base reinforcing bar 31.

  A reinforcing bar for reinforcing the anchor hole 19 (and the anchor bolt 18) is embedded in the rising portion 13 of the foundation 11. Hereinafter, the structure of this reinforcing bar is demonstrated based on FIGS. 3 is a perspective view showing the configuration of the reinforcing bars, FIG. 4 is a perspective view showing the installation state of the reinforcing bars in the rising portion 13, FIG. 5 is a plan view showing the installation state, and FIG. It is sectional drawing which shows an installation state. In FIG. 4, illustration of the rising portion 13 is omitted for convenience. FIG. 6 corresponds to a cross-sectional view taken along line AA in FIG.

  In the following description, it is assumed that the reinforcing bar is installed on the rising portion 13, and the horizontal direction in this state is the horizontal direction, and the vertical direction is the vertical direction.

  As shown in FIG. 3, the reinforcing bar 40 is configured by combining and integrating a plurality of reinforcing bars. The reinforcing bar 40 has a three-dimensional shape that is L-shaped in plan view as a whole. The reinforcing bar 40 has a first reinforcing bar 41. The first reinforcing bar 41 has a pair of horizontal portions 42 and 43 extending in the horizontal direction and a pair of vertical portions 44 and 45 extending in the vertical direction. The pair of horizontal portions 42 and 43 are formed by being bent at right angles to each other in a horizontal plane. The vertical portion 44 extends downward (vertically downward) from the end of the horizontal portion 42 (end opposite to the horizontal portion 43), and the vertical portion 45 is the end of the horizontal portion 43 (horizontal portion 42). (The end on the opposite side) extends downward (vertically downward). The horizontal portions 42 and 43 have the same length, and the vertical portions 44 and 45 have the same length.

  The reinforcing bar 40 has a pair of second reinforcing bars 46. The second reinforcing bar 46 is formed by being bent in a U-shape, and includes a horizontal portion 47 extending in the horizontal direction and a pair of vertical portions 48 extending downward (vertically downward) from both ends of the horizontal portion 47. , 49. The horizontal portion 47 has the same length as the horizontal portions 42 and 43 of the first reinforcing bar 41, and the vertical portions 48 and 49 have the same length as the vertical portions 44 and 45 of the first reinforcing bar 41. Yes.

  In the following description, for the sake of convenience, one of the second reinforcing bars 46 is denoted by a and the other second reinforcing bar 46 is denoted by b. Moreover, a is attached | subjected to the code | symbol of each part 47-49 of the 2nd reinforcing bar 46a, respectively, and b is attached | subjected to the code | symbol of each part 47-49 of the 2nd reinforcing bar 46b, respectively.

  The second reinforcing bar 46a is disposed inside the L shape of the first reinforcing bar 41 in a plan view, and the horizontal part 47a is parallel to the horizontal part 42 of the first reinforcing bar 41 and is located at the same height as the horizontal part 42. doing. The second reinforcing bar 46a is fixed to the horizontal part 43 of the first reinforcing bar 41 by welding or the like at the upper end of the vertical part 49a (in other words, the boundary part between the vertical part 49a and the horizontal part 47a).

  The second reinforcing bar 46b is arranged inside the L shape of the first reinforcing bar 41 in a plan view, and the horizontal part 47b is parallel to the horizontal part 43 of the first reinforcing bar 41 and is located at the same height as the horizontal part 43. doing. The second reinforcing bar 46b is fixed to the horizontal part 42 of the first reinforcing bar 41 by welding or the like at the upper end of the vertical part 49b (in other words, the boundary part between the vertical part 49b and the horizontal part 47b).

  In the arrangement state of the second reinforcing bars 46a and 46b, the horizontal portions 47a and 47b of the second reinforcing bars 46a and 46b intersect (orthogonal) with each other, and are fixed to each other by welding or the like at the intersecting portion 51. In the intersection 51, the horizontal portions 47a and 47b intersect with each other with the horizontal portion 47a positioned on the lower side and the horizontal portion 47b positioned on the upper side, whereby the horizontal portion 47a becomes the horizontal portion of the first reinforcing bar 41. 42, the horizontal portion 47b is positioned slightly higher than the horizontal portion 43 of the first reinforcing bar 41 (specifically, a position that is higher by the thickness of the reinforcing bar).

  The reinforcing bar 40 further has a third reinforcing bar 53. The third reinforcing bar 53 is formed by being folded in a U-shape, and includes a horizontal portion 54 extending in the horizontal direction and a pair of vertical portions 55 extending downward (vertically downward) from both ends of the horizontal portion 54. , 56. The horizontal portion 54 has the same length as the separation distance between the boundary portion 58 (bent portion) between the horizontal portions 42 and 43 of the first reinforcing bar 41 and the intersecting portion 51 of the second reinforcing bars 46a and 46b. Have. The vertical portions 55 and 56 have the same length as the vertical portions 44 and 45 of the first reinforcing bar 41 and the vertical portions 48 and 49 of the second reinforcing bar 46.

  The third reinforcing bar 53 is arranged such that the horizontal part 54 straddles the boundary part 58 of the first reinforcing bar 41 and the intersecting part 51 of each of the second reinforcing bars 46a and 46b. It is fixed to the boundary portion 58 and the intersecting portion 51 by welding or the like. In this case, the horizontal portion 54 is disposed at an angle of 45 degrees with respect to the horizontal portions 42 and 43 of the first reinforcing bar 41 and the horizontal portions 47a and 47b of the second reinforcing bars 46a and 46b. And this reinforcement bar 40 has comprised the substantially symmetrical shape on the basis of this horizontal part 54 (3rd reinforcing bar 53) as a whole.

  The reinforcing bar 40 is provided with a connecting bar 61 that connects the first reinforcing bar 41 and the second reinforcing bar 46a, and a connecting bar 62 that connects the first reinforcing bar 41 and the second reinforcing bar 46b. The connecting bar 61 is provided across the vertical part 44 of the first reinforcing bar 41 and the vertical part 48a of the second reinforcing bar 46a. Specifically, the connecting bar 61 is provided between the upper ends of the vertical parts 44 and 48a. It has been. The connecting bar 61 is fixed to the vertical portions 44 and 48a by welding or the like.

  The connecting bar 62 is provided to be bridged between the vertical part 45 of the first reinforcing bar 41 and the vertical part 48b of the second reinforcing bar 46b. Specifically, the connecting bar 62 is provided to be bridged between the upper ends of the vertical parts 45 and 48b. It has been. The connecting bar 62 is fixed to the vertical portions 45 and 48b by welding or the like.

  The reinforcing bar 40 is provided with an L-shaped crack prevention bar 64 so as to be bridged between the vertical parts 44 and 45 of the first reinforcing bar 41 and the vertical part 55 of the third reinforcing bar 53. The crack prevention bar 64 extends across the vertical part 44 and the vertical part 55, and extends across the horizontal part 64 a extending in parallel with the horizontal part 42 of the first reinforcing bar 41, and the vertical part 45 and the vertical part 55. It has the horizontal part 64b extended in parallel with the horizontal part 43 of 1 rebar 41. A plurality of crack prevention bars 64 (three in this embodiment) are provided at predetermined intervals in the longitudinal direction of the vertical portions 44, 45, and 55. It is fixed to 55 by welding or the like.

  Further, the reinforcing bar 40 is provided with an L-shaped crack preventing bar 65 so as to be bridged between the vertical parts 48 a and 48 b of the second reinforcing bars 46 a and 46 b and the vertical part 56 of the third reinforcing bar 53. Yes. The crack prevention bar 65 extends across the vertical part 48a and the vertical part 56, and extends across the horizontal part 65a extending in parallel with the horizontal part 47a of the second reinforcing bar 46a, and the vertical part 48b and the vertical part 56. It has the horizontal part 65b extended in parallel with the horizontal part 47b of the 2 rebar 46b. A plurality of (three in the present embodiment) crack prevention bars 65 are provided at predetermined intervals in the longitudinal direction of the vertical portions 48a, 48b, 56, and each of the crack prevention stripes 65 is provided in each vertical portion 48a, 48b, 56 is fixed by welding or the like.

  Then, the installation structure of the reinforcing bar 40 in the rising part 13 of the foundation 11 is demonstrated based on FIGS. In addition, in FIG. 5, the installation location K (installation area | region) of the pillar 21 on the standup | rising part 13 (corner part 14) is shown with the dashed-two dotted line.

  As shown in FIGS. 4 and 5, the reinforcing bar 40 is embedded along the L-shaped portion of the rising portion 13, and each anchor position U <b> 1, U <b> 2 and the installation location K of the column 21 are respectively shown in plan view. It is arranged so as to surround it. In the reinforcing bar 40, the horizontal part 42 of the first reinforcing bar 41 and the horizontal part 47a of the second reinforcing bar 46a are sandwiched between the anchor hole 19A (and the anchor bolt 18A) by the linear part 15A, and the thickness direction of the linear part 15A (hereinafter referred to as “reinforcing bar”). It is arranged on both sides (referred to as the foundation thickness direction Y1) and extends along the longitudinal direction of the straight line portion 15A (hereinafter referred to as the foundation longitudinal direction X1). The horizontal portions 42 and 47a are arranged at positions that are symmetrical in the same direction with respect to the center position in the thickness direction of the straight portion 15A. In this case, each horizontal portion 42, 47a corresponds to a stripping prevention portion, and each of the first reinforcing bar 41 and the second reinforcing bar 46a having each horizontal portion 42, 47a corresponds to a stripping prevention portion.

  The horizontal part 43 of the first reinforcing bar 41 and the horizontal part 47b of the second reinforcing bar 46b are in the thickness direction of the straight part 15B (hereinafter referred to as the basic thickness direction Y2) across the anchor hole 19B (and the anchor bolt 18B) in the straight part 15B. It arrange | positions at both sides and is extended along the longitudinal direction (henceforth basic | foundation longitudinal direction X2) of the straight part 15B. The horizontal portions 43 and 47b are disposed at positions that are symmetrical in the same direction with respect to the center position in the thickness direction of the straight portion 15B. In this case, each horizontal portion 43, 47b corresponds to a peeling prevention portion, and each of the first reinforcing bar 41 and the second reinforcing bar 46b having each horizontal portion 43, 47b corresponds to a peeling prevention portion.

  By the way, when an earthquake occurs, the thickness direction of the rising portion 13 (straight portions 15A and 15B) in which the anchor hole 19 is embedded is caused by vibration (horizontal force) transmitted from the building unit 20 through the anchor bolt 18. There is a risk of the corners coming off. In FIG. 6, a portion that may be peeled off in the straight line portion 15 </ b> A (hereinafter, referred to as a peeling portion H) is shown with dots. The stripped portion H extends at a predetermined oblique angle (for example, about 45 °) starting from the opening of the anchor hole 19A, and exists on both the outdoor side and the indoor side of the straight portion 15A. Moreover, although illustration is abbreviate | omitted, also in the straight part 15B, the peeling location H exists in both the outdoor side and indoor side of the straight part 15B similarly to this.

  In the straight portion 15A, the horizontal portion 42 of the first reinforcing bar 41 and the horizontal portion 47a of the second reinforcing bar 46a are present at both the stripped portions H on the outdoor side and the indoor side, respectively. Moreover, although illustration is abbreviate | omitted, also in the linear part 15B, the horizontal part 43 of the 1st reinforcing bar 41 and the horizontal part 47b of the 2nd reinforcing bar 46b exist in both the peeling parts H of the outdoor side and the indoor side, respectively. Therefore, according to the reinforcing bar 40, it is possible to prevent the occurrence of peeling at each of the peeling places H.

  Returning to FIGS. 4 and 5, each crack prevention bar 64, 65 has a direction in which the horizontal parts 64 a, 65 a extend in the basic longitudinal direction X 1 and a direction in which the horizontal parts 64 b, 65 b extend in the basic longitudinal direction X 2. Is arranged in. In this case, both horizontal portions 64a and 65a extending in the base longitudinal direction X1 are disposed on both sides of the foundation thickness direction Y1 with the anchor hole 19A interposed therebetween, and both horizontal portions 64b and 65b extending in the base longitudinal direction X2 are sandwiched with the anchor hole 19B. It arrange | positions at the base thickness direction Y2 both sides. Thereby, in addition to preventing the foundation 11 from peeling off around the anchor holes 19A and 19B, it is possible to prevent cracking.

  Each of the connecting bars 61 and 62 and the horizontal portion 54 of the third reinforcing bar 53 are in contact with the upper side of the upper main bar 36 and are supported from below by the upper main bar 36 in the contact state. Thereby, this reinforcement bar 40 is in the state where it was supported by a plurality of places (specifically three places) to upper end main reinforcement 36. In this case, the connecting bars 61 and 62 and the horizontal portion 54 correspond to connecting portions.

  Further, the horizontal portion 54 is arranged along a straight line connecting the protruding corner 16 and the insertion corner 17 in the plan view, and both end portions thereof are positioned in the vicinity of the extraction corner 16 and the vicinity of the insertion corner 17, respectively.

  Here, the reinforcing bar 40 can reinforce not only the periphery of the anchor hole 19 in the rising portion 13 but also the vicinity of the installation location K of the column 21. Hereinafter, the structure for enabling the reinforcement of the reinforcing bars 40 will be described.

  As shown in FIG. 5, the horizontal portion 42 of the first reinforcing bar 41 extends across the straight portion 15 </ b> A and the corner portion 14 in the basic longitudinal direction X <b> 1. A part of the horizontal part 42 is located at the same position in the foundation longitudinal direction X1 with the installation location K of the pillar 21 in the corner part 14. Specifically, the horizontal portion 42 has an overlapping portion 68 that overlaps with the installation location K of the column 21 (in other words, the column 21) in the basic longitudinal direction X1, and the overlapping portion 68 is a column in the basic longitudinal direction X1. 21 installation locations K overlap with almost the entire area.

  The horizontal portion 43 of the first reinforcing bar 41 extends across the straight portion 15B and the corner portion 14 in the basic longitudinal direction X2. A part of the horizontal portion 43 is located at the same position in the foundation longitudinal direction X2 with the installation location K of the pillar 21 in the corner portion 14. Specifically, the horizontal portion 43 has an overlapping portion 69 that overlaps with the installation location K of the column 21 in the basic longitudinal direction X2, and this overlapping portion 69 is almost the installation location K of the column 21 in the basic longitudinal direction X2. It overlaps with the whole area. These horizontal portions 42 and 43 (overlapping portions 68 and 69) are connected to each other at a boundary portion 58 near the corner 16 of the corner portion 14.

  Thus, according to the above configuration in which the horizontal portions 42 and 43 extend to the same position as the installation location K of the pillar 21, the foundation is provided not only around the anchor hole 19 but also around the installation location K of the pillar 21. It is possible to prevent peeling. Further, in this configuration, it is possible to prevent foundation peeling at the corner 16 of the corner portion 14 where the peeling due to the shaking of the column 21 is particularly likely to occur.

  Moreover, the horizontal part 47a of the 2nd reinforcing bar 46a is extended to the same position as the installation location K of the pillar 21 in the foundation longitudinal direction X1, and the horizontal part 47b of the 2nd reinforcing bar 46b is installed in the foundation longitudinal direction X2. It extends to the same position as the location K. In this case, not only the corner 16 side but also the corner 17 side of the corner portion 14 can be prevented from peeling off the foundation.

  The crack preventing reinforcement 64 has its horizontal portion 64a extending to the same position as the installation location K of the pillar 21 in the basic longitudinal direction X1, and its horizontal portion 64b to the same position as the installation location K of the pillar 21 in the basic longitudinal direction X2. It extends. Therefore, the crack prevention line 64 can enhance the peeling prevention effect around the installation location K of the column 21, specifically, at the protruding corner 16 portion.

  Of the vertical portions 44, 45, and 55 that support the crack prevention bars 64, the vertical portion 55 is disposed at the same position as the installation location K of the column 21 in the basic longitudinal direction X <b> 1 and X <b> 2. Specifically, the vertical portion 55 extends up and down along the protruding corner 16 in the vicinity of the protruding corner 16 of the corner portion 14, and is located at the same position as the corner near the protruding corner 16 in the installation location K of the column 21. doing. Therefore, the vertical portion 55 can also enhance the peeling prevention effect at the protruding corner 16 portion.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  In the reinforcing bar 40, a pair of horizontal portions 42, 47a (43, 47b) are arranged on both sides in the thickness direction of the rising portion 13 with the anchor hole 19A (19B) interposed therebetween, and the pair of horizontal portions 42, 47a (43, 47b). ) Were extended to the same position as the installation location K of the pillar 21 in the basic longitudinal direction X1 (X2). Thereby, it is possible to prevent the foundation from being peeled off not only around the anchor hole 19 but also around the installation location K of the pillar 21. In addition, since the reinforcing bar 40 is configured as an integrated body composed of a plurality of reinforcing bars, the periphery of the anchor hole 19 and the area around the installation location K of the column 21 can be reinforced at once, and as a result, an increase in man-hours for bar arrangement work is suppressed. However, it is possible to prevent the foundation from being peeled off both around the anchor hole 19 and around the installation location K of the pillar 21.

  In the rising portion 13, anchor positions U 1 and U 2 are set on both sides of the installation location K of the column 21 in the base extending direction X in which the rising portion 13 extends, and a pair is provided for each of the anchor positions U 1 and U 2. Horizontal portions 42, 47a (43, 47b). In this case, it is possible to prevent peeling around the anchor holes 19A and 19B and around the installation location K of the column 21 at once, and greatly reduce the work man-hours in preventing these parts from peeling off. Can do.

  A connecting bar 61 connecting the first reinforcing bar 41 and the second reinforcing bar 46a disposed on both sides of the foundation thickness direction Y1 across the anchor hole 19A (anchor bolt 18A) is provided, and the foundation across the anchor hole 19B (anchor bolt 18B). A connecting bar 62 for connecting the first reinforcing bar 41 and the second reinforcing bar 46b arranged on both sides in the thickness direction Y2 was provided. The connecting bars 61 and 62 are supported by the upper main bar 36 from below. Thereby, when arrange | positioning the reinforcement bar | burr 40 in the standing part 13 of the foundation 11, it can arrange | position in the state which supported the reinforcement bar | burr 40 on the upper end main reinforcement | strength 36, and can make the arrangement | positioning operation | work easy.

  In addition, since the connecting bars 61 and 62 (connecting parts) are also used as support parts for supporting the upper main bars 36, the structure can be simplified compared to the case where the supporting parts are provided separately from the connecting bars 61 and 62. Can do.

  In addition, since a plurality of connecting bars 61 and 62 are provided along the direction in which the upper end main bar 36 extends (the direction extending in an L shape), the reinforcing bars 40 can be stably supported by the plurality of connecting bars 61 and 62. As a result, the arrangement work of the reinforcing bars 40 can be further facilitated.

  Further, since the connecting bars 61 and 62 are disposed at both ends of the reinforcing bar 40 in the extending direction of the upper end main bar 36, it is convenient to support the reinforcing bar 40 in a stable state.

  Since the horizontal portion 54 of the third reinforcing bar 53 is arranged so as to extend along a straight line connecting the exit corner 16 and the insertion corner 17 in the plan view, the vicinity of the exit corner 16 and the vicinity of the insertion corner 17 of the corner portion 14. The peeling prevention effect in both can be enhanced.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the present invention is applied to the configuration in which the column 21 is installed on the corner portion 14 in the rising portion 13 of the foundation 11, but the column 21 is installed on the straight portion 15 in the rising portion 13. The present invention may be applied to the configuration. For example, in FIG. 8, pillars 21 are installed on the straight part 15 in the rising part 13, and anchor holes 19 are provided on both sides in the longitudinal direction of the straight part 15 across the pillar 21. Reinforcing bars 70 are embedded in the straight portion 15, and the reinforcing bars 70 correspond to a pair of horizontal portions 71 and 72 (strip prevention portions) disposed on both sides in the thickness direction of the straight portion 15 across the anchor hole 19. )have. Each of these horizontal portions 71 and 72 extends so as to straddle each anchor hole 19 along the longitudinal direction of the straight portion 15, and is connected by connecting bars 73 and 74 at both ends in the longitudinal direction. Yes.

  In this case, each horizontal portion 71, 72 is arranged so as to straddle the installation location K of the column 21 in the longitudinal direction of the straight portion 15, so In this case, the foundation can be prevented from peeling off. Further, since the reinforcing bar 70 is an integrated body in which the horizontal portions 71 and 72 are connected by the connecting bars 73 and 74, the periphery of each anchor hole 19 and the area around the installation location K of the column 21 are reinforced at once. can do. Therefore, in this case as well, it is possible to prevent foundation peeling at both the periphery of each anchor hole 19 and the vicinity of the installation location K of the column 21 while suppressing an increase in work man-hours.

  (2) In the above embodiment, the two anchor holes 19A, 19B are collectively reinforced by the one reinforcing bar 40. However, reinforcing bars are provided in the two anchor holes 19A, 19B, respectively, and the anchors are provided by the respective reinforcing bars. The holes 19A and 19B may be reinforced individually. Even in that case, if at least one of these reinforcing bars is provided by extending the horizontal portion (peeling prevention portion) to the installation position K of the column 21, it is added to the periphery of the anchor hole 19. It becomes possible to reinforce the vicinity of the installation location K of the pillar 21.

  (3) In the above-described embodiment, in the reinforcing bar 40, both the pair of horizontal portions 42 and 47a (43 and 47b) disposed on both sides in the thickness direction of the rising portion 13 (straight portion 15) with the anchor hole 19 interposed therebetween. Each of the pair of horizontal portions 42, 47a (43, 47b) is extended to the same position as the installation location K of the pillar 21, but only the horizontal portion 42 (43) near the exit corner 16 is set as the installation location K of the column 21. You may make it extend to the same position. Even in that case, it is possible to prevent peeling at the protruding corner portion 16 where peeling due to the shaking of the column 21 is particularly likely to occur.

  Moreover, in the said embodiment, in the reinforcing bar 40, both of a pair of horizontal parts 42 and 47a (43, 47b) each provided for each anchor hole 19A (19B) are the same positions as the installation location K of the pillar 21, respectively. However, even if only the pair of horizontal portions 42 and 47a provided for any one of the anchor holes 19A and 19B (for example, 19A) is extended to the same position as the installation position K of the pillar 21, Good. Even in that case, it is possible to obtain an effect of preventing peeling around the installation place K of the pillar 21.

  (4) In the above embodiment, the reinforcing bar 40 is provided with a pair of crack preventing bars 64 and 65 disposed on both sides in the thickness direction of the rising portion 13 with the anchor hole 19 interposed therebetween. Either one or both of 65 may be omitted. For example, if both crack prevention bars 64 and 65 are not provided, the vertical portions 44, 45, and 55 (48a, 48b, and 56) that support them can also be provided. The configuration can be greatly simplified.

  (5) The bar arrangement structure of the foundation 11 may be a double bar arrangement. In this case, it can be considered that the pair of peeling prevention portions in the reinforcing bars 40 are respectively arranged on both sides of the foundation thickness direction with the two main bars interposed therebetween.

  (6) In the above embodiment, the floor girder 23 of the building unit 20 is fixed to the rising portion 13 of the foundation 11 with the anchor bolt 18, but a configuration in which a part other than the floor girder 23 is fixed with the anchor bolt 18 is also conceivable. For example, a configuration is conceivable in which an end plate provided at the lower end portion of the column 21 is formed so as to protrude laterally from the column 21 and the protruding portion is fixed to the rising portion 13 with anchor bolts 18. Even in such a configuration, since the building unit 20 (more specifically, the building) is fixed to the rising portion 13 by the anchor bolt 18 in the vicinity of the column 21, the reinforcing bar of the present invention can be applied.

  (7) When the building is fixed to the rising portion 13 of the foundation 11 with anchor bolts, a configuration in which the anchor bolt is directly embedded (embedded) in the rising portion 13, that is, a configuration in which the anchor hole 19 is not used is also conceivable. In such a configuration, the reinforcing bar 40 of the present invention may be installed with the anchor bolt (only) as a reinforcement target. In that case, the anchor bolt corresponds to the anchor portion.

  (8) Although the application example to the unit type building has been described in the above embodiment, the present invention can also be applied to a building having another structure such as a building constructed by a steel frame assembling method. In short, the present invention can be applied if the pillar of the building is installed on the rising part of the foundation and the building is fixed to the rising part by the anchor part near the pillar.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Foundation, 13 ... Stand-up part, 14 ... Corner part, 15 ... Straight part as non-corner part, 16 ... Out corner, 18 ... Anchor bolt, 19 ... Anchor hole, 20 ... Building unit, 21 ... Columns, 23: Floor beams as floor beams, 36: Top main bars as main bars, 40: Reinforcing bars, 44: Vertical parts, 45 ... Vertical parts, 48 ... Vertical parts, 49 ... Vertical parts, 55 ... Vertical parts, 56 ... vertical part, 64 ... crack prevention line, 65 ... crack prevention line, K ... installation location of pillar, U1, U2 ... anchor position.

Claims (9)

Applied to the rising part in the foundation of reinforced concrete,
Reinforcing bars for anchors that reinforce the anchors that fix the building to the rising part at a predetermined anchor position displaced in the longitudinal direction of the foundation with respect to the installation location of the pillar of the building installed on the rising part Because
It is composed by combining and integrating multiple reinforcing bars,
Provided on both sides in the thickness direction of the rising part sandwiching the anchor part inside the rising part, each comprising a pair of peeling prevention parts configured by the reinforcing bars and extending in the longitudinal direction of the foundation,
A reinforcing bar, wherein at least one of the pair of peeling prevention portions extends to the same position as the installation location of the pillar in the longitudinal direction of the foundation. The rising portion of the foundation is bent in an L shape in plan view,
In the rising portion, the bent portion is a corner portion where a protruding corner of the rising portion is formed, and each portion extending in a direction orthogonal to each other from the corner portion is a non-corner portion,
The pillar is installed in the corner portion, and the anchor position is set in the non-corner portion,
In the non-corner portion in which the anchor position is set, the pair of peeling prevention portions are provided on both sides in the thickness direction of the non-corner portion sandwiching the anchor portion, respectively.
Of the pair of peeling prevention portions, at least the peeling prevention portion disposed near the projecting corner in the thickness direction extends to the same position as the installation position of the column in the corner portion in the longitudinal direction of the non-corner portion. The reinforcing bar according to claim 1, wherein the reinforcing bar is a reinforcing bar. Each of the non-corner portions is set with the anchor position, and each of the anchor positions is provided with the pair of peeling prevention portions,
In each of the non-corner portions, each of the stripping prevention portions disposed near the corner in the thickness direction of the non-corner portion extends to the same position as the installation location of the column in the longitudinal direction of the non-corner portion, and The reinforcing bar according to claim 2, wherein the reinforcing bars are connected at right angles in the vicinity of the protruding corner. In the rising portion of the foundation, the anchor positions are respectively set on both sides of the pillar in the extending direction in which the rising portion extends,
For each of these anchor positions, the pair of peeling prevention parts are arranged on both sides in the thickness direction across the anchor part,
The reinforcing bar according to claim 1, wherein at least one of the peeling prevention portions extends to the same position as the installation location of the pillar. A pair of anti-strip muscles provided on both sides of the thickness direction across the anchor part inside the rising part, each having the anti-strip part,
A connecting portion configured by the reinforcing bars and connecting the pair of anti-strip bars;
With
The reinforcing bar according to any one of claims 1 to 4, wherein the connecting part is supported from below by a main bar extending in a longitudinal direction of the foundation inside the rising part. A plurality of each of the pair of peeling prevention portions, each provided with a plurality of vertical portions extending below the peeling prevention portion,
A crack preventing part provided across the plurality of vertical parts on both sides in the thickness direction across the anchor part, and
6. The crack prevention portion of at least one of the crack prevention portions on both sides in the thickness direction extends to the same position as the installation location of the pillar in the longitudinal direction of the foundation. Reinforcing bar according to any one of the above.   7. The reinforcing bar according to claim 6, wherein a part of the plurality of vertical portions is arranged at the same position as the installation location of the column in the longitudinal direction of the foundation. The rising portion of the foundation is bent in an L shape in plan view,
In the rising portion, the bent portion is a corner portion where a protruding corner of the rising portion is formed, and each portion extending in a direction orthogonal to each other from the corner portion is a non-corner portion,
The pillar is installed in the corner portion, and the anchor position is set in the non-corner portion,
In the non-corner portion in which the anchor position is set, the pair of peeling prevention portions are provided on both sides in the thickness direction of the non-corner portion sandwiching the anchor portion, respectively.
Of the pair of peeling prevention parts, at least the peeling prevention part arranged near the projecting corner in the thickness direction extends to the same position as the installation location of the pillar in the longitudinal direction of the foundation,
A part of the plurality of vertical portions provided in the peeling prevention portion near the protruding corner is arranged near the protruding corner and extends vertically along the protruding corner. The reinforcing bar according to claim 6 or 7. The foundation having the rising portion in which the reinforcing bar according to claim 3 is embedded;
The building installed on the rising part;
With
The building is a unit building constructed by connecting a plurality of building units each having a floor beam, a ceiling beam, and a column,
The pillar of the building unit is installed on the corner;
Two floor beams extending in a direction orthogonal to each other from the pillar are respectively disposed along the non-corner portion on each non-corner portion,
The unit type building, wherein the floor beam is fixed to the non-corner portion by the anchor portion at each anchor position of each non-corner portion.

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