JP6339457B2 - Column base anchor device - Google Patents

Description

  The present invention is formed on the outer side or the inner side of the base frame even if the height position of the setting plate is lowered in response to a request to reduce the root cutting depth and the height of the foundation concrete. A column base that can sufficiently secure the vertical dimension of the reinforcing bar insertion space, can properly arrange the reinforcing bars, and can avoid expanding the foundation concrete and increasing the product specifications. The present invention relates to an anchor device.

  A column for embedding multiple anchor bolts in advance in the foundation concrete with high positional accuracy when fixing the column bases such as steel columns of the structure to the RC foundation concrete. Various leg anchor devices are known (see Patent Documents 1 to 4).

  The “anchor frame” of Patent Document 4 is erected on a base formed in a frame shape by fixing a plurality of ridges at a predetermined interval on the lower end side. Each hook is provided with a fixing means on the upper portion thereof, which can fix a plurality of anchor bolts at a predetermined vertical position on the lower end side at intervals. Since each anchor can fix two or more anchor bolts, even if there are many anchor bolts to be used, the number of anchors is small, and obstacles to the reinforcement of the foundation structure can be reduced.

  This anchor frame will be described with reference to FIG. 6. A rectangular base frame (base) b installed on the ground a such as a throwing-off container, and a support column erected on each corner c of the base frame b. Positions spaced apart from the column members d by two members (竪 杆) d and the side of each column member d in an arrangement on the outside of the base frame b and sandwiching the corner c. The anchor bolt e is provided in the vertical direction along the column member d and is arranged at the corner portion c of the base frame b. The anchor bolt e is joined to the upper portion of the anchor bolt e and the column base portion is installed. It has the plate f and the metal fitting (fixing means) g for the number of anchor bolts which joins the lower part of each anchor bolt e individually with the upper part of each support | pillar member d.

  The joint hardware g ensures the verticality and positional accuracy of the anchor bolt e suspended from the setting plate f. In this anchor frame, most of the reinforcing bars such as the horizontal foundation beam reinforcements embedded in the foundation concrete are arranged in the frame space X surrounded by the column members d.

  Among the reinforcing bars, the reinforcing bar h arranged on the outer side of the base frame b is a pair of anchor bolts e arranged in the vertical direction between the joint hardware g and the setting plate f and sandwiching the corner c. The space defined by the horizontal dimension between the two is used as the reinforcing bar insertion space Y, and the reinforcing bar is inserted into the reinforcing bar insertion space Y from the lateral direction.

JP-A-1-163321 JP-A-7-252847 JP 2008-156822 A Japanese Patent Laid-Open No. 10-68132

  In recent years, when constructing foundation concrete, there is an increasing demand to reduce the root cutting depth as much as possible and to reduce the height of the foundation concrete.

  In the above-described conventional anchor frame, the request is met by lowering the height position of the setting plate f, so that the reinforcing plate insertion space Y on the outer side of the base frame b is joined to the setting plate f. There is a problem in that the vertical dimension between the metal g and the metal g is reduced, and the bar arrangement space of the reinforcing bar h cannot be sufficiently secured in the vertical direction. For this reason, the necessary number of reinforcing bars h cannot be arranged at appropriate intervals on the outer side of the base frame b.

  Also, as shown in the figure, the anchor frame used for the corner column of the structure or the column base of the side column installed facing the rising portion i of the ground is a bent portion j for ensuring fixation. Reinforcing bar h is formed, but the bent portion j of the reinforcing bar h is difficult to pass through the reinforcing bar insertion space Y having a narrow vertical dimension, and there is a case where the reinforcing bar cannot be arranged.

  In such a case, the reinforcing bars had to be arranged outside the anchor frame, and the width of the foundation concrete such as the foundation column type and the foundation beam had to be widened.

  On the other hand, it is conceivable to lower the installation height position of the joint hardware g by lowering the height of the column member d. However, with this configuration, the range in which the height position of the anchor bolt e can be adjusted in the vertical direction is narrowed. End up. If the adjustment range is narrowed and the flexibility is lost, the versatility of the anchor frame is lost, and various types of anchor frames with different height dimensions of the column members d must be prepared, increasing the product specifications. There was an inconvenience of doing so.

  Such a problem is that, as described above, two anchor bolts e are arranged side by side on the side of each column member d in such a manner that the anchor bolts e are arranged on the outer side of the base frame b and sandwich the corner portion c. The anchor bolts e are provided in the vertical direction along the column members d at positions spaced apart from each other, arranged at the corners c of the base frame b, and each of the anchor bolts e with the joint hardware (fixing means) g corresponding to the number of anchor bolts. However, the present invention was not limited to the case where the lower part of each was joined individually to the upper part of each column member d. In other words, two anchor bolts e are located on the inner side of the base frame b, and are arranged side by side on the side of each column member d in such a manner as to sandwich the corner portion c, at a position spaced from the column member d. Even if it is provided in the vertical direction along the column member d and is arranged at the corner c of the base frame b, the setting plate f and the joint metal g are related to the reinforcing bar insertion space inside the base frame b. Therefore, there is a problem in that the space in the up and down direction is small, and the reinforcing bar h cannot be sufficiently secured in the up and down direction.

  The present invention was devised in view of the above-mentioned conventional problems, and even if the height position of the setting plate is lowered in response to a request to reduce the root cutting depth and reduce the height of the foundation concrete. , It is possible to ensure sufficient vertical dimension of the reinforcing bar insertion space formed on the outer side or inner side of the base frame, can properly arrange the reinforcing bars, widen the foundation concrete, An object of the present invention is to provide an anchor device for a column base that can avoid an increase in specifications.

  A column base anchor device according to the present invention includes a rectangular base frame installed on the ground, a column member standing on each corner of the base frame, and an outer side of the base frame. The base frame is provided in the vertical direction along the column member at a position spaced apart from the column member, two in a row with the corner portion sandwiched between the column members. The anchor bolts arranged at the corners, a setting plate to be joined to the upper part of the anchor bolts, and a joint metal for joining the lower part of the anchor bolt to the support member. Column base anchor device in which a reinforcing bar insertion space for inserting a reinforcing bar from the lateral direction is formed between the two anchor bolts arranged between the setting plate and sandwiching the corner. The joint hardware includes an attachment part for attaching a lower part of one anchor bolt to the support member among the two anchor bolts arranged at each corner of the base frame, and the base. It is provided below the mounting part on the outer side of the frame, and is composed of a connecting part that connects the two anchor bolts to each other.

  The column base anchor device according to the present invention includes a rectangular base frame installed on the ground, a column member standing on each corner of the base frame, and an inner side of the base frame. And arranged in a vertical direction along the column member at a position spaced apart from the column member, two in a row side by side with each column member in an arrangement sandwiching the corner portion. An anchor bolt arranged at the corner of the base frame, a setting plate joined to the upper part of the anchor bolt, and a joint metal that joins the lower part of the anchor bolt to the support member. Between the two anchor bolts arranged between the corner plate and the setting plate, and a reinforcing bar insertion space for inserting a reinforcing bar from the lateral direction is formed between the two anchor bolts. -The apparatus, wherein the metal fitting is an attachment part for attaching the lower part of one of the anchor bolts to the support member among the two anchor bolts arranged at the corners of the base frame, It is provided below the mounting part on the inner side of the base frame, and is composed of a connecting part that connects the two anchor bolts to each other.

  The attachment parts are arranged symmetrically with respect to the center of the base frame, one for each side of the base frame.

  The connecting part is turned by a fastening action of screwing a nut for attaching a connecting part to a lower part of the anchor bolt, and is positioned by being brought into contact with the support member from the side.

  The connecting parts are characterized in that the anchor bolts are joined to both ends, and a portion between both ends is positioned in contact with the support member from the side.

  In the column base anchor device according to the present invention, even if the setting plate is lowered in response to a request to reduce the root cutting depth to reduce the height of the foundation concrete, The rebar insertion space formed on the inner side or the inner side can be sufficiently secured in the vertical direction, the reinforcing bars can be properly arranged, the foundation concrete can be widened, and the product specifications can be increased. Can be avoided.

It is a perspective view which shows suitable one Embodiment of the anchor apparatus for column bases concerning this invention. It is a front view of the anchor apparatus for column bases shown in FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. It is a principal part plane sectional view explaining attachment of the metal fitting applied to the anchor apparatus for column bases shown in FIG. It is sectional drawing corresponding to FIG. 3 which shows the modification of the anchor apparatus for column base concerning this invention. It is a side view explaining background art.

  Hereinafter, a preferred embodiment of a column base anchor device according to the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view of a column base anchor device according to the present embodiment, FIG. 2 is a front view of the column base anchor device shown in FIG. 1, and FIG. 3 is a view taken along line AA in FIG. Sectional drawing and FIG. 4 are principal part plane sectional views explaining attachment of the joining metal hardware applied to the anchor apparatus for column bases shown in FIG.

  The column base anchor device 1 according to the present embodiment is mainly applied to a column base portion of a steel column of S structure, SRC structure, or CFT structure, and is installed on the ground such as a dumping container. A base frame 2; a plurality of support members 4 erected on the corners 3 of the base frame 2; a plurality of anchor bolts 5 arranged along a planar outline of the base frame 2; 4 includes a setting plate 6 which is provided above and is joined to the upper part of the anchor bolt 5, and joint hardware 7 and 8 which joins the lower part of the anchor bolt 5 to the upper part of the column member 4. Hereinafter, it demonstrates according to the assembly procedure of the anchor apparatus 1 for column bases concerning this embodiment.

  First, the base frame 2 is formed in a planar rectangular shape by joining the four frame members 9 together. In the illustrated example, it is formed in a planar square shape. In this embodiment, the frame material 9 is formed of an angle material having an L-shaped cross section. The frame material 9 may be composed of a channel material having a U-shaped cross section or a pipe material having a hollow rectangular tube shape or a hollow cylindrical shape.

  Each of the four frame members 9 made of the angle member is arranged such that the entrance corner 9a faces the outside of the base frame 2 and the exit corner 9b faces the inside of the base frame 2, and is in a planar square shape. Of the pair of frame members 9 forming the four corner portions 3, the end portion of one frame member 9 is joined to the middle portion of the other frame member 9.

  As a result, the base frame 2 is formed in a planar square shape in the form in which the other frame material 9 has leg portions 9 c protruding from the one frame material 9 around each corner 3. The base frame 2 is stably installed on the ground by four leg portions 9c around each corner portion 3.

  Next, four support members 4 are attached to each of the four corner portions 3 of the base frame 2. The column member 4 is provided upright from the base frame 2 with its lower end joined to the frame member 9 by bolting or the like. In this embodiment, the support member 4 is formed of an angle member having an L-shaped cross section. Similarly to the frame member 9, the support member 4 may be formed of a channel member having a U-shaped cross section, or a pipe member having a hollow rectangular tube shape or a hollow cylindrical shape.

  Each of the four strut members 4 made of the angle member is arranged so that the surface on the protruding corner 4a side thereof coincides with the corner of the corner portion 3 formed by the surface on the protruding corner 9b side of the frame material 9. Then, it is joined to the corner 3 of the base frame 2.

  On the other hand, the upper portion of the anchor bolt 5 is attached and fixed to the setting plate 6 with a double nut 10 in an arrangement described later, whereby the anchor bolt 5 is temporarily assembled in a state of being suspended from the setting plate 6.

  The setting plate 6 is removed after reinforcing bars 11 are arranged (see FIG. 1) and the main column anchor device 1 is embedded in the concrete to construct the foundation concrete. And the upper part of the anchor bolt 5 which protrudes from a foundation concrete upper surface is joined with a column base part.

  The plurality of anchor bolts 5 are provided in the vertical direction along the support member 4 between the setting plate 6 and the support member 4. The anchor bolt 5 is formed of a bamboo-shaped deformed reinforcing bar having male screws formed at both upper and lower ends. The anchor bolt 5 may be a threaded reinforcing bar or a round steel having a threaded portion.

  The arrangement of the anchor bolts 5 will be described. The anchor bolts 5 are arranged at the corners 3 of the base frame 2 and on the outer side of the base frame 2. More specifically, the outer side of the base frame 2 is outside of the column arrangement area B defined by being surrounded by the four column members 4, that is, from the surface of the base frame 2 on the protruding corner 9 b side. Are also arranged outside.

  Two anchor bolts 5 are arranged around each corner portion 3 of the base frame 2 so as to sandwich the corner portion 3 with respect to each column member 4. Two anchor bolts 5 arranged for each column member 4 are arranged side by side on the side of the column member 4. More specifically, the side of the column member 4 refers to directions along the directions of the two sides of the base frame 2 orthogonal to each other at the corner 3, with the four frame members 9 being the four sides of the base frame 2.

  Accordingly, the anchor bolts 5 are arranged so as to overlap the column members 4 when viewed from the direction along the square side of the base frame 2. Thereby, in the corner part 3, the two anchor bolts 5 are arranged side by side. The two anchor bolts 5 are also arranged side by side in relation to the support member 4.

  The anchor bolt 5 is arranged at a position spaced from the support member 4 by a distance C. The distance C between the column member 4 and each of the two anchor bolts 5 is a dimension along the direction of each of the two sides of the base frame 2 orthogonal to each other at the corner 3. The spacing dimension C is set by a holder 7 as a mounting part and a connecting plate 8 as a connecting part, which will be described later. And eight anchor bolts 5 are provided at least two at each corner 3 of the base frame 2.

  Of course, additional anchor bolts may be disposed between the corner portions 3 from the setting plate 6. The anchor bolts 5 are temporarily assembled to the setting plate 6 in the arrangement as described above.

  Next, holders 7 as attachment parts for attaching the lower part of the anchor bolt 5 to the support member 4 are attached to the four support members 4 one by one. The holder 7 is configured to attach either one of the two anchor bolts 5 arranged at each corner 3 described above to the support member 4.

  The holder 7 is formed between a grip portion 7a having a through hole through which the anchor bolt 5 is inserted in the vertical direction, a joint end 7b joined to the upper portion of the column member 4, and the joint end 7b and the grip portion 7a. The arm portion 7c for setting the above-described distance dimension C between the support member 4 and the anchor bolt 5 is provided.

  The joining end 7 b of the holder 7 is joined to the upper part of the support member 4 by various joining methods such as welding joining, whereby the holder 7 is fixed to the support member 4. The lower portion of the anchor bolt 5 suspended from the setting plate 6 is inserted into the grip portion 7a from above, and is fixed to the grip portion 7a by a tightening screw 7d and is fixed to the support member 4.

  As described in the arrangement of the anchor bolts 5, the arm portion 7 c protrudes from the column member 4 in a direction along the direction of one of the two sides of the base frame 2 orthogonal to the corner portion 3. The interval dimension C is set according to the length dimension of the arm portion 7c.

  Next, the two anchor bolts 5 arranged in each corner 3 are connected to each other by a connecting plate 8 as a connecting part. The connecting plate 8 is provided below the holder 7 at a position lower than the upper part of the column member 4. Of course, the connecting plate 8 is provided on the outer side of the base frame 2, that is, on the outer side of the column arrangement region B.

  The connecting plate 8 is fixedly attached to the two anchor bolts 5 by fastening a connecting plate attaching nut 12 screwed from below to the lower part of each anchor bolt 5. Thereby, of the two anchor bolts 5 arranged at each corner 3, the other anchor bolt 5 not fixed by the holder 7 is connected to the support column 8, the one anchor bolt 5 and the holder 7 via the support pillar 8. It is fixed to the member 4.

  The connecting plate 8 is formed with insertion holes 8a through which the two anchor bolts 5 are inserted at both ends, and plate edges 8b that are positioned between the insertion holes 8a at both ends and face the column member 4 are formed. The support member 4 is configured to come into contact with the protruding corner 4a of the support member 4 from the side. Therefore, as long as the said structure is satisfied, the connection board 8 does not need to be rectangular shape like the example of illustration. Further, the connecting parts may not be plate-like members.

  The two insertion holes 8a and the plate edge 8b of the connecting plate 8 are set to have a dimensional relationship that satisfies the arrangement of the anchor bolts 5 described above. That is, the connecting plate 8 is configured in a dimensional relationship in which the two insertion holes 8a are arranged at a position separated from the support member 4 by a distance C when the plate edge 8b contacts the support member 4. As a result, the two anchor bolts 5 connected by the connecting plate 8 are arranged side by side in the above-described arrangement, and the distance C between the column members 4 is equal.

  In the operation of fastening the connecting plate 8 to the anchor bolt 5, as shown in FIG. 4, the nut 12 is pushed toward the support member 4 using a wrench or the like (indicated by an arrow D in the figure) to The connecting plate 8 is pivoted around the anchor bolt 5 on the holder 7 side by a fastening operation (indicated by an arrow E in the figure) for screwing the nut 12 into the lower portion of the bolt 5, whereby the connecting plate 8 is supported by the support member. 4 is abutted from the side and positioned. Thereby, positioning of the connecting plate 8 according to the arrangement of the anchor bolts 5 described above is achieved.

  Alternatively, when anchor bolts 5 are joined to both ends of the connecting plate 8 in the length direction across the corner portion 3, the center in the length direction between the anchor bolts 5 (insertion holes 8 a) is lateral to the column member 4. The contact plate 8 is positioned in accordance with the arrangement of the anchor bolts 5 described above.

  Further, by the contact of the connecting plate 8, a reaction force can be obtained from the column member 4 and the fastening operation can be performed smoothly. By anchoring the anchor bolt 5 temporarily assembled to the setting plate 6 to the column member 4 via the holder 7 and the connecting plate 8, the column base anchor device 1 is completed.

  In the present embodiment, the holder 7 is disposed point-symmetrically with respect to the center F of the base frame 2 (see FIG. 3), one for each side of the base frame 2. In other words, according to the illustration in FIG. 3, the positional relationship between the holder 7 at the upper left corner 3 and the connecting plate 8 drawn diagonally to the left from the holder 7 is the same positional relationship at each corner 3. It is configured as follows.

  Specifically, when the four frame members 9 of the base frame 2 are viewed counterclockwise, a holder 7 is provided at one end portion of the frame member 9 that is anticlockwise forward, and the frame member 9 that is counterclockwise rearward. A holder 7 is not provided at the other end of. When the holders 7 are arranged in this way, the protruding direction of the holder 7 from the column member 4 is changed by 90 ° between adjacent corner portions 3.

  As a result, when viewed in the column base anchor device 1 as a whole, the holder 7 and the connecting plate 8 are configured in an equivalent positional relationship regardless of which direction the reinforcing bar 11 is inserted in the four directions of front, rear, left and right. Is done.

  Contrary to the illustrated example, when the four frame members 4 of the base frame 2 are viewed counterclockwise, a holder 7 is provided at the other end portion of the frame member 9 that is counterclockwise backward, and the frame that is counterclockwise forward The holder 7 may not be provided at one end of the material 9.

  On the other hand, two holders 7 are provided for each of a pair of opposite sides of the base frame 2 so as to be disposed on each of the column members 4 positioned at both ends thereof, and a holder is provided on the other pair of sides. A configuration in which 7 is not provided may be employed. In this case, on the side where the holder 7 is disposed, the holder 7 is provided to protrude from the column member 4 to the same side.

  As shown in FIGS. 2 and 3, the column base anchor device 1 that has been assembled as described above has corners for inserting the reinforcing bars 11 such as the foundation beam main bars from the lateral direction outside the column member 4. Horizontal dimension between the anchor bolts 5 (or the anchor bolt 5 and the column member 4) arranged across the corner 3 (the distance between the column member 4 and the anchor bolt 5 defined by the arm portion 7c of the holder 7) Dimension C) and the first reinforcing bar insertion space G1 defined by the vertical dimension between the setting plate 6 and the holder 7, and the anchor bolts 5 (or anchor bolts) arranged similarly with the corner 3 interposed therebetween. 2 and the second reinforcing bar insertion space G2 defined by the horizontal dimension (spacing dimension C) between the support plate 4 and the vertical dimension between the setting plate 6 and the connecting plate 8; It is formed.

  The second reinforcing bar insertion space G <b> 2 is formed to have a larger vertical dimension than the first reinforcing bar insertion space G <b> 1 by providing the connecting plate 8 below the holder 7.

  Next, the operation of the column base anchor device 1 according to this embodiment will be described. The column base anchor device 1 is installed on the ground, and various bar arrangements are applied before being embedded in the foundation concrete. Most of the reinforcing bars such as the foundation beam main bars incorporated from the lateral direction with respect to the column base anchor device 1 are arranged through the inside of the column arrangement region B.

  Among the reinforcing bars, the reinforcing bars 11 arranged on the outer side of the column arrangement region B are, for example, as shown in FIG. 2 in a first reinforcing bar insertion space G1 on the left side and a second reinforcing bar insertion space G2 on the right side. It is inserted from the lateral direction and is arranged with respect to the column base anchor device 1.

  As shown by an arrow H in FIG. 3, the column base anchor device 1 according to the present embodiment is shown on the upper side on the front surface of the column base anchor device 1 when viewed from the insertion direction of the reinforcing bar 11. At the periphery, a first reinforcing bar insertion space G1 restricted by the holder 7 is positioned in the front, and the first reinforcing bar insertion space G1 has a vertical dimension by a connecting plate 8 on the side of the first reinforcing bar insertion space G1. A longer second reinforcing bar insertion space G2 is located. In addition, in the vicinity of the support member 4 shown on the lower side, a second reinforcing bar insertion space is positioned in the front.

  On the other hand, as viewed from the direction opposite to the insertion direction of the reinforcing bar 11, the second reinforcing bar insertion space G2 is positioned on the front surface around the column member 4 shown on the upper side on the rear surface of the column base anchor device 1. Further, in the vicinity of the support member 4 shown on the lower side, the first reinforcing bar insertion space G1 is positioned on the front, and the long second reinforcing bar insertion space G2 is positioned on the side of the first reinforcing bar insertion space G1. .

  Therefore, when the reinforcing bar 11 is inserted laterally into the column base anchor device 1 from the front side to the rear side, the second reinforcing bar insertion space G2 having a large vertical dimension is always used to arrange the bars in a flexible manner. be able to. Since the bar arrangement can be made flexible, even the rebar with the bent portion 11a for fixing used for the corner column of the structure and the column base of the side column is smooth and smooth. Can be arranged.

  In the column base anchor device 1 according to the present embodiment, since the holder 7 and the connecting plate 8 are configured in an equivalent positional relationship in the front, rear, left and right directions, not only in the front and rear direction but also in the left and right direction. Even in the case of arranging the bars, the same arrangement can be made.

  Therefore, in the column base anchor device 1 according to the present embodiment, the vertical dimension of the reinforcing bar insertion space G2 for arranging the bars outwardly of the base frame 2 can be sufficiently secured, and the column base anchor device 1 is inserted sideways. It is possible to properly arrange the reinforcing bars 11 to be arranged. For this reason, even if the height position of the setting plate 6 is lowered in response to a request to reduce the root cutting depth and the height of the foundation concrete, the foundation concrete can be expanded or the product specifications increased. Can be avoided.

  Since the holders 7 are arranged point-symmetrically with respect to the center F of the base frame 2, one for each side of the base frame 2, the holders 7 are equal to the reinforcing bars 11 arranged laterally from the front, rear, left, and right directions. A bar arrangement space can be secured.

  Since the connecting plate 8 is swung by a fastening action of screwing a nut 12 for attaching a connecting part to the lower part of the anchor bolt 5 and brought into contact with the support member 4 from the side, it is arranged. The positioning of the plurality of anchor bolts 5 can be ensured appropriately.

  Regarding the connecting plate 8, the anchor bolts 5 are joined to both ends, and the plate edge portion 8b between both ends is positioned so as to come into contact with the support member 4 from the side. The positioning of the plurality of anchor bolts 5 can be ensured appropriately.

  FIG. 5 shows a modification of the column base anchor device 1 described in the above embodiment. FIG. 5 is a cross-sectional view corresponding to FIG. In the above embodiment, the anchor bolt 5 is arranged on the outer side of the base frame 2, but the modification is applied when the anchor bolt 5 is arranged on the inner side of the base frame 2. . Hereinafter, differences from the above embodiment will be described.

  In this modification, the column member 4 made of an angle member having an L-shaped cross section is joined to the base frame 2 so that the corner of the column member 4 faces the corner of the corner portion 3 of the base frame 2. .

  The plurality of anchor bolts 5 are provided in the vertical direction along the support member 4 between the setting plate 6 and the support member 4 as in the above embodiment.

  The arrangement of the anchor bolts 5 will be described. The anchor bolts 5 are arranged at the corners 3 of the base frame 2 and on the inner side of the base frame 2. More specifically, the inner side of the base frame 2 is the inner side of the column arrangement area B defined by being surrounded by the four column members 4, that is, from the surface of the base frame 2 on the protruding corner 9 b side. Are also arranged inside.

  Similarly to the above embodiment, two anchor bolts 5 are arranged around each corner portion 3 of the base frame 2 so as to sandwich the corner portion 3 with respect to each column member 4. Two anchor bolts 5 arranged for each column member 4 are arranged side by side on the side of the column member 4. More specifically, the side of the column member 4 refers to directions along the directions of the two sides of the base frame 2 orthogonal to each other at the corner 3, with the four frame members 9 being the four sides of the base frame 2.

  Accordingly, the anchor bolts 5 are arranged so as to overlap the column members 4 when viewed from the direction along the square side of the base frame 2. Thereby, in the corner part 3, the two anchor bolts 5 are arranged side by side. The two anchor bolts 5 are also arranged side by side in relation to the support member 4.

  The anchor bolt 5 is arranged at a position spaced from the support member 4 by a distance C, as in the above embodiment. The distance C between the column member 4 and each of the two anchor bolts 5 is a dimension along the direction of each of the two sides of the base frame 2 orthogonal to each other at the corner 3. The distance C is set by the holder 7 as a mounting part and the connecting plate 8 as a connecting part. And eight anchor bolts 5 are provided at least two at each corner 3 of the base frame 2.

  Similarly to the above-described embodiment, the above-described holders 7 as attachment parts for attaching the lower part of the anchor bolt 5 to the support member 4 are attached to the four support members 4 one by one. . The holder 7 is configured to attach either one of the two anchor bolts 5 arranged at each corner 3 described above to the support member 4.

  Two anchor bolts 5 arranged in each corner 3 are connected to each other by the connecting plate 8 described above as a connecting part. The connecting plate 8 is provided below the holder 7 at a position lower than the upper part of the column member 4. Of course, the connecting plate 8 is provided on the inner side of the base frame 2, that is, on the inner side of the column arrangement region B.

  The connecting plate 8 is formed with insertion holes 8a through which the two anchor bolts 5 are inserted at both ends, and plate edges 8b that are positioned between the insertion holes 8a at both ends and face the column member 4 are formed. The strut member 4 is configured to come into contact with its side.

  Also in this modified example, the holder 7 is disposed point-symmetrically with respect to the center F of the base frame 2, one for each side of the base frame 2. As a result, when viewed in the column base anchor device 1 as a whole, the holder 7 and the connecting plate 8 are configured in an equivalent positional relationship regardless of which direction the reinforcing bar 11 is inserted in the four directions of front, rear, left and right. Is done.

  In the anchor device 1 for the column base according to the modification, anchor bolts 5 are arranged between the corner portions 3 for inserting the reinforcing bars 11 such as the foundation beam main reinforcement from the lateral direction inside the column member 4 ( Alternatively, the horizontal dimension between the anchor bolt 5 and the support member 4 (the distance C between the support member 4 and the anchor bolt 5 defined by the arm portion 7 c of the holder 7) and between the setting plate 6 and the holder 7. The horizontal dimension (interval) between the first reinforcing bar insertion space G1 defined by the vertical dimension and the anchor bolts 5 (or the anchor bolt 5 and the column member 4) arranged with the corner portion 3 interposed therebetween. Dimension C) and a second rebar insertion space G2 defined by the vertical dimension between the setting plate 6 and the connecting plate 8 is formed.

  Similarly to the above embodiment, the second reinforcing bar insertion space G2 is formed with a connecting plate 8 below the holder 7, so that the vertical dimension is larger than that of the first reinforcing bar insertion space G1.

  Even in such a modification, it is needless to say that the same effects as those of the above-described embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Anchor apparatus for column bases 2 Base frame 3 Corner part of base frame 4 Supporting member 5 Anchor bolt 6 Setting plate 7 Holder 8 Connecting plate 8a Insertion hole 8b Plate edge of connecting plate 11 Reinforcement 12 Nut F Center of base frame G1 First rebar insertion space G2 Second rebar insertion space

Claims (5)

A rectangular base frame installed on the ground;
Strut members erected at the corners of the base frame,
Two on the outer side of the base frame, arranged side by side with the corners, side by side along the side of each column member, and vertically spaced along the column member at a position spaced from the column member Anchor bolts provided in a direction and arranged at the corners of the base frame;
A setting plate joined to the upper part of the anchor bolt;
It has a joint metal that joins the lower part of the anchor bolt to the support member,
For the column base in which a reinforcing bar insertion space for inserting a reinforcing bar from the lateral direction is formed between the two anchor bolts arranged between the joint metal and the setting plate and sandwiching the corner portion. An anchor device,
The joint hardware includes an attachment part for attaching a lower part of the anchor bolt to the support member among the two anchor bolts arranged at the corners of the base frame, and an outer side of the base frame. And a connecting part for connecting the two anchor bolts to each other, which is provided below the mounting part. A rectangular base frame installed on the ground;
Strut members erected at the corners of the base frame,
Two on the inner side of the base frame, with the corners sandwiched between them, side by side along the side of each column member and vertically spaced along the column member at a position spaced from the column member Anchor bolts provided in a direction and arranged at the corners of the base frame;
A setting plate joined to the upper part of the anchor bolt;
It has a joint metal that joins the lower part of the anchor bolt to the support member,
For the column base in which a reinforcing bar insertion space for inserting a reinforcing bar from the lateral direction is formed between the two anchor bolts arranged between the joint metal and the setting plate and sandwiching the corner portion. An anchor device,
The joining hardware includes an attachment part for attaching a lower part of one anchor bolt to the support member among the two anchor bolts arranged at each corner of the base frame, and an inner side of the base frame. And a connecting part for connecting the two anchor bolts to each other, which is provided below the mounting part.   3. The column base anchor device according to claim 1, wherein the attachment parts are arranged point-symmetrically with respect to the center of the base frame, one for each side of the base frame.   2. The connecting part is pivoted by a fastening action in which a nut for attaching a connecting part is screwed to a lower portion of the anchor bolt, and is positioned by being brought into contact with the support member from the side. The anchor apparatus for column bases in any one of -3.   4. The connection part according to claim 1, wherein the anchor bolt is joined to each of both ends, and a portion between both ends is positioned in contact with the support member from the side. Column base anchor device.

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