JP2022063587A - Column base anchor structure, frame, and design method for column base anchor structure - Google Patents

Abstract

To provide a column base anchor structure that enables judgment at sites on whether or not a form plate comprising the column base anchor structure was selected at the time of design.SOLUTION: A column base anchor structure 1 includes a form plate selected from among a plurality of form plates whose specifications are specified by a standard, and a frame for supporting the form plate, while a frame 2 includes a pair of supporting parts 221 having a protrusion 222 formed on a top surface thereof, and a lower form plate 31 includes a pair of supported parts 312. The standard specifies the interval at inner ends of the pair of supported parts 312 of the lower form plate 31 to increase in steps, and includes a specification that specifies the interval between the supported parts 312 to be a first interval, a specification that specifies the interval to be a second interval larger than the first interval by a step, and a specification that specifies the interval to be a third interval larger than the second interval by a step. Here, an interval at outer ends of the protrusions 222 formed on the pair of support parts 221 is larger than or equal to the first interval and smaller than or equal to the second interval, while an interval at outer ends of the pair of supporting parts 221 is larger than or equal to the second interval and smaller than or equal to the third interval.SELECTED DRAWING: Figure 1

Description

The present invention relates to a column base anchor structure, a frame, and a method for designing a column base anchor structure.

Conventionally, a column base anchor structure for installing a column base for a building on concrete cast on the ground is known (for example, Patent Document 1). The column base anchor structure is a structure that fixes the base plate joined to the column of the building to the foundation concrete.

The column base anchor structure is composed of a pedestal placed on the leveled concrete, a profile plate installed on the pedestal, and anchor bolts for fixing the base plate to the foundation concrete.

The specifications of the gantry and the profile are set in advance by the standard, and they are selected according to the specifications such as the type and size of the base plate. Also, these parts that make up the column base anchor structure are generally assembled at the construction site.

Japanese Unexamined Patent Publication No. 2018-53563

If a shape plate different from the shape plate selected at the time of design is mistakenly delivered to the construction site, the construction site may inadvertently attach the shape plate to the gantry. If a shape plate different from the shape plate selected at the time of design is attached to the gantry, the position of the anchor bolts of the column base anchor structure and the position of the bolt holes formed in the base plate will not match, so the foundation concrete The base plate cannot be fixed with anchor bolts.

The present invention is a column base anchor structure, a pedestal, and a column base anchor structure that enables it to be determined at the manufacturing site whether or not the profile constituting the column base anchor structure is selected at the time of design. The purpose is to provide a method of designing the body.

The column base anchor structure according to the present invention is a column base anchor structure including one profile plate selected from a plurality of profile plates whose specifications are defined by standards, and a pedestal for supporting the one profile plate. Therefore, the gantry has a pair of support portions for supporting the profile, a convex portion is provided on the upper surface of the pair of support portions, and the profile plate is a pair of supported portions supported by the pair of support portions. The standard defines the specifications of the profile so that the distance between the pair of supported parts gradually increases, the specification is that the distance is the first distance, and the distance is larger than the first distance. The distance between the outer ends of the protrusions provided on the pair of support portions includes the specification that the second space is one step larger and the third space that is one step larger than the second space. The distance between the outer ends of the pair of support portions is equal to or greater than one and equal to or less than the second interval, and the interval between the outer ends of the pair of support portions is equal to or greater than the second interval and equal to or less than the third interval.

The gantry according to the present invention is a gantry that supports one profile plate selected from a plurality of profile plates whose specifications are defined by standards, and has a pair of support portions that support the profile plates, and supports the profiles in a pair. A convex portion is provided on the upper surface of the portion, the profile plate has a pair of supported portions supported by the pair of supporting portions, and the standard is that the distance between the pair of supported portions is gradually increased. It defines the specifications of the profile, the specification where the interval is the first interval, the specification where the interval is one step larger than the first interval, and the specification where the interval is one step larger than the second interval. Including the specification of the third spacing, the spacing between the outer ends of the protrusions provided on the pair of supports is greater than or equal to the first spacing and less than or equal to the second spacing, and the spacing between the outer ends of the pair of supports. The interval is equal to or greater than the second interval and equal to or less than the third interval.

The method for designing a column base anchor structure according to the present invention is a column base anchor including one profile plate selected from a plurality of profile plates whose specifications are defined by standards, and a pedestal for supporting the one profile plate. In the design method of the structure, the gantry has a pair of support portions for supporting the profile, a convex portion is provided on the upper surface of the pair of support portions, and the profile plate is supported by the pair of support portions. It has a pair of supported parts, and the standard defines the specifications of the profile so that the distance between the pair of supported parts gradually increases. The outside of the convex portion provided on the pair of support portions, including the specification that the second interval is one step larger than the first interval and the third interval that the interval is one step larger than the second interval. Includes setting the end spacing to be greater than or equal to the first spacing and less than or equal to the second spacing, and defining the spacing of the outer ends of the pair of supports to be greater than or equal to the second spacing and less than or equal to the third spacing. ..

According to the present invention, it is possible to determine at a construction site whether or not the profile plate constituting the column base anchor structure is selected at the time of design. In particular, when the gantry is required to have rigidity and the members constituting the support portion are selected to have a large cross-sectional performance, and as a result, the width of the support portion becomes large, the intervals are small. Since it is possible to mount the profile plate with the specifications of the above on the pedestal, this can be prevented.

It is a perspective view of the column base anchor structure of 1st Embodiment. It is a figure explaining the installation process of a column base anchor structure. It is a figure explaining the installation process of a column base anchor structure. It is a figure explaining the installation process of a column base anchor structure. It is a figure explaining the installation process of a column base anchor structure. It is a figure explaining an example of the specification of a profile. It is a figure explaining an example of the specification of a gantry. It is a top view of the column base anchor structure. FIG. 8 is a view taken along the line AA of FIG. It is a top view of the column base anchor structure. FIG. 10 is a view taken along the line BB of FIG. It is a top view of the column base anchor structure. FIG. 12 is a view taken along the line CC of FIG. It is a figure which shows the pedestal of the column base anchor structure of 2nd Embodiment. It is a perspective view which shows the structure of a jig. It is a top view which shows the column base anchor structure of 2nd Embodiment. It is a top view which shows the column base anchor structure of 2nd Embodiment. It is a top view which shows the column base anchor structure of 2nd Embodiment. It is a figure which shows another example of a jig.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to this embodiment.

[Overview of column base anchor structure]
The outline of the column base anchor structure will be described.

FIG. 1 is a perspective view of a column base anchor structure. The column base anchor structure 1 is a structure for fixing the columns of a building on the foundation concrete. The column base anchor structure 1 includes a gantry 2 and an anchor frame 3.

The gantry 2 is a member that is placed on leveled concrete and supports the anchor frame 3. The gantry 2 has a support column 21, a horizontal member 22, and a pedestal 23.

The support column 21 is a member arranged perpendicular to the leveled concrete. For the support column 21, for example, a steel material such as angle steel that is long in the material axis direction is used.

The horizontal member 22 is fixed to the upper end of the support column 21 and connects the support columns 21 to each other. For the horizontal member 22, for example, a steel material such as angle steel that is long in the material axial direction is used. Further, the horizontal member 22 has a support portion 221.

The support portion 221 is a portion that projects horizontally and in a direction away from each other from the upper ends of the pair of horizontal members 22 arranged in parallel with each other. The upper surface of the pair of support portions 221 abuts on the lower surface of the lower plate 31 to support the anchor frame 3.

Rigidity is required for the gantry 2, and the horizontal member 22 constituting the support portion 221 may also have a large cross-sectional performance, resulting in an increase in the width of the support portion 221. In such a case, it becomes possible to mount a profile plate having a specification with a low step and a small interval on the gantry 2. In order to prevent this, the support portion 221 is provided with a convex portion 222.

The convex portion 222 is provided on the upper surface of the support portion 221. The convex portion 222 is used as a mark for determining whether or not the gantry 2 and the anchor frame 3 are selected at the time of design and correspond to each other. Further, the convex portion 222 functions as a positioning member when the anchor frame 3 is placed on the support portion 221.

The convex portion 222 is, for example, a plate member formed in a rectangular shape in a plan view. For example, two convex portions 222 are provided on each support portion 221.

In a state where the anchor frame 3 is placed on the support portion 221, a welding allowance for joining the anchor frame 3 and the support portion 221 is secured on the upper surface of the support portion 221. This welding allowance will be described later.

The length of the support portion 221 in the longitudinal direction is formed so that the portion below the lower plate 31 of the anchor bolt 32 does not interfere with the support portion 221 when the anchor frame 3 is placed on the support portion 221. .. Specifically, the support portion 221 is formed so that the length in the longitudinal direction is shorter than the length in the longitudinal direction of the lateral member 22 and both ends thereof are notched.

The pedestal 23 is a member fixed to the lower end of the support column 21. The pedestal 23 connects each column 21 at the lower end thereof to ensure the stability of the pedestal 2.

The anchor frame 3 is a member supported by the gantry 2. The anchor frame 3 has a lower profile plate 31, anchor bolts 32, and nuts 33 and 34.

The lower plate 31 is a rectangular iron plate supported by the gantry 2. A rectangular opening 311 is formed in the center of the lower plate 31. That is, the lower plate 31 is formed in a shape in which the supported portions 312, which are four strip-shaped plate members, are connected in a frame shape. The lower shape plate 31 may be formed by joining a plurality of rectangular iron plates into a frame shape by welding or the like. The four supported portions 312 are supported by the four supporting portions 221 of the corresponding gantry 2. Of the four supported portions 312, a pair of supported portions 312 facing each other with the opening 311 interposed therebetween correspond to a pair of supported portions of the present invention. The shape of the lower shape plate 31 and the shape of the opening 311 formed in the lower shape plate 31 are not limited to a rectangle, and may be other shapes. For example, the pair of supported portions 312 facing each other do not necessarily have to be arranged in parallel with each other.

Holes (not shown) for anchor bolts 32 are formed in the lower shape plate 31 at predetermined positions. This bolt hole is formed at a position corresponding to the bolt hole formed in the base plate 4. The lower shape plate 31 is joined to the upper surface of the gantry 2 by, for example, welding.

The anchor bolt 32 is inserted into and fixed in the hole for the anchor bolt 32 formed in the lower shape plate 31. Anchor bolts 32 are fixed to the lower shape plate 31 by fastening the two nuts 33 with the lower shape plate 31 sandwiched between them.

A hole for a bolt of the base plate 4 is inserted through the upper part of the anchor bolt 32.
Then, the base plate 4 is fixed to the foundation concrete by tightening the nut 34 to the anchor bolt 32.

[Installation process of column base anchor structure]
Next, the installation process of the column base anchor structure 1 will be described with reference to FIGS. 2 to 5.

2 to 5 are views for explaining the installation process of the column base anchor structure 1.
First, the gantry 2 is placed at an appropriate position on the leveled concrete 5 (see FIG. 2). Next, the anchor frame 3 assembled on the gantry 2 is placed, and the gantry 2 and the lower plate 31 of the anchor frame 3 are joined by welding.

Near the upper end of the anchor bolts 32, a top plate 35 for maintaining the posture of each anchor bolt 32 in a vertical state and maintaining the pitch between the anchor bolts 32 is fixed by a nut 34. The shape of the upper plate 35 may be the same as the shape of the lower plate 31. Like the lower plate 31, the upper plate 35 may be formed by joining a plurality of rectangular iron plates into a frame shape by welding or the like. Since the anchor bolts 32 are temporarily fastened using the upper shape plate 35, the positions of the anchor bolts 32 do not shift even if a force is applied to the anchor bolts 32 when the foundation concrete 6 is poured.

Subsequently, the foundation concrete 6 that is the foundation of the building is placed (see FIG. 3). The foundation concrete 6 is cast up to the vicinity of the lower surface of the upper profile plate 35. When the foundation concrete 6 is placed, most of the gantry 2 and the anchor frame 3 are buried in the foundation concrete 6.

When the foundation concrete 6 hardens, the upper profile plate 35 is removed (see FIG. 4).

After that, the anchor bolt 32 exposed from the foundation concrete 6 is inserted with a hole for a bolt formed in the base plate 4, and the base plate 4 is installed on the foundation concrete 6 (see FIG. 5). Subsequently, the nut 34 is tightened to the anchor bolt 32, and the base plate 4 is fixed on the foundation concrete 6.

By such a step, the column base anchor structure 1 is installed on the foundation concrete 6, and the base plate 4 is fixed to the foundation concrete 6 by the column base anchor structure 1. In addition, mortar may be injected between the base plate 4 and the foundation concrete 6.

[Specifications of column base anchor structure]
Next, the specifications of the column base anchor structure 1 will be described.

The specifications of the gantry 2 and the lower profile plate 31 constituting the column base anchor structure 1 are predetermined by the standard. Here, the specifications of the gantry 2 and the lower profile plate 31 determine the dimensions of each part of the gantry 2 and the lower profile plate 31. The standard includes a plurality of specifications relating to the gantry 2 and the lower shape plate 31 in which the dimensions of each part are defined. When the base plate 4 to be joined to the column is determined, the lower shape plate 31 and the gantry 2 suitable for the base plate 4 are selected from a plurality of specifications defined by the standard.

FIG. 6 is an example of the standard of the lower shape plate 31 of the column base anchor structure 1, and shows a part of the specifications (31A, 31B, 31C).

As for the lower shape plate 31, the lower shape plate 31A for 500 × 500, the lower shape plate 31B for 550 × 550, the lower shape plate 31C for 600 × 600, and the like are predetermined step by step according to the standard.

The lower shape plate 31A for 500 × 500 has an external dimension a of 780 [mm] and a length of one side of the opening, that is, a distance b between the inner ends of the pair of supported portions facing each other is 500 [mm]. The lower shape plate 31B for 550 × 550 has an external dimension a of 830 [mm] and a side length b of an opening of 550 [mm]. The lower shape plate 31C for 600 × 600 has an external dimension a of 880 [mm] and a side length b of an opening of 600 [mm].

That is, in this standard, the length b of one side of the opening of each lower shape plate 31 is defined to increase by 50 [mm]. In other words, the standard defines that the distance b between the inner ends of the pair of supported portions 312 provided so as to face each other across the opening 311 is gradually increased.

FIG. 7 is an example of the standard of the gantry 2 of the column base anchor structure 1, and shows a part of the specifications (2A, 2B, 3C).

As for the gantry 2, the pedestal 2A for 500 × 500, the pedestal 2B for 550 × 550, the pedestal 2C for 600 × 600, and the like are defined step by step according to the standard.

In the frame 2A for 500 × 500, the distance c between the outer ends of the pair of support portions 221 is 540 [mm], the distance d between the inner ends is 400 [mm], the width e of the support portions 221 is 70 [mm], and the convex portion. The distance f between the outer ends of the 222 is 490 [mm], and the width g of the convex portion 222 is 45 [mm]. In the 550 × 550 mount 2B, the distance c between the outer ends of the pair of support portions 221 is 590 [mm], the distance d between the inner ends is 450 [mm], the width e of the support portions 221 is 70 [mm], and the convex portion. The distance f between the outer ends of the 222 is 540 [mm], and the width g of the convex portion 222 is 45 [mm]. In the 600 × 600 mount 2C, the distance c between the outer ends of the pair of support portions 221 is 640 [mm], the distance d between the inner ends is 500 [mm], the width of the support portions 221 is 70 [mm], and the convex portion 222. The distance f between the outer ends of the above is 590 [mm], and the width g of the convex portion 222 is 45 [mm].

Next, on the gantry 2 (2B) of a predetermined specification, a lower shape plate 31 (31A) having a corresponding appropriate specification is arranged, and a lower shape plate 31 (31A) having a one-step smaller specification is arranged. A case where the lower shape plate 31 (31C) having a specification one step larger is arranged will be described in order.

FIG. 8 is a plan view of the column base anchor structure 1 in a state where the lower shape plate 31B for 550 × 550 is arranged on the pedestal 2B for 550 × 550, and FIG. 9 is a view taken along the line AA of FIG. It is a figure.

The distance b between the inner ends of the pair of supported portions 312 of the lower shape plate 31B for 550 × 550 is 550 [mm], and the distance f between the outer ends of the convex portions 222 is 540 [mm]. Therefore, the gap between the outer end of each convex portion 222 and the inner side surface of the opening 311 of the lower shape plate 31B for 550 × 550 is 5 [mm]. That is, the worker at the construction site mounts the lower shape plate 31B suitable for the gantry 2B by confirming that the outer end of the convex portion 222 fits exactly on the inner side surface of the opening 311 of the lower shape plate 31. It can be confirmed that it has been done. Further, a welding allowance for joining the gantry 2B and the lower profile plate 31B is secured on the upper surface of the support portion 221, and the gantry 2 and the lower profile plate 31B can be joined via the welding portion 223. In addition, each support portion 221 supports the supported portion 312 of the lower shape plate 31B with a width of 20 [mm].

FIG. 10 is a plan view of the column base anchor structure 1 in a state where the lower shape plate 31A for 500 × 500 is arranged on the pedestal 2B for 550 × 550, and FIG. 11 is a view taken along the line BB of FIG. It is a figure.

The distance b between the inner ends of the pair of supported portions 312 of the lower plate 31A for 500 × 500 is 500 [mm], and the distance f between the outer ends of the convex portions 222 is 540 [mm]. That is, the lower shape plate 31A for 500 × 500 is placed on the convex portion 222, and the state becomes unstable. Further, the convex portion 222 creates a gap between the support portion 221 and the supported portion 312. Therefore, the worker at the construction site can notice that a suitable lower profile plate is not placed on the gantry 2B. In particular, when the width of the support portion 221 becomes large, it is possible to mount a lower shape plate having a specification of a small interval with a low stage on the gantry 2, but the convex portion 222 is provided on the support portion 221. By providing it, this can be prevented, which is effective.

FIG. 12 is a plan view of the column base anchor structure 1 in a state where the lower profile plate 31C for 600 × 600 is arranged on the pedestal 2B for 550 × 550, and FIG. 13 is a view taken along the line CC of FIG. It is a figure.
The distance c between the outer ends of the pair of support portions 221 of the 550 × 550 pedestal 2B is 590 [mm], and the distance b between the inner ends of the pair of supported portions 312 of the lower profile plate 31C for 600 × 600 is 600 [. mm]. That is, the distance b between the inner ends of the pair of supported portions 312 is longer than the distance c between the outer ends of the support portions 221 of the gantry 2B. Therefore, the lower shape plate 31C cannot be placed on the support portion 221 of the gantry 2B. Therefore, the worker at the construction site can notice that the lower profile plate 31C does not fit the gantry 2B.

As in the above description, when the 500 × 500 pedestal 2A and the 500 × 500 lower plate 31A are combined, the lower plate 31A can be placed on the pedestal 2A and the convex portion 222. The outer end of the 500 × 500 lower plate 31A just fits into the inner surface of the opening 311. Therefore, the worker at the construction site can confirm that the lower profile plate 31A suitable for the gantry 2A is placed. Further, a welding allowance for joining the gantry 2A and the lower plate 31A is secured on the upper surface of the support portion 221.

On the other hand, when the frame 2A for 500 × 500 and the lower plate 31B for 550 × 550 are combined, the distance b at the inner end of the supported portion 312 is larger than the distance c at the outer ends of the pair of support portions 221. become longer. Therefore, the lower plate 31B cannot be placed on the gantry 2A. Therefore, the worker at the construction site can notice that the lower shape plate 31B does not fit the gantry 2A.

Further, when the frame 2C for 600 × 600 and the lower plate 31C for 600 × 600 are combined, the lower plate 31C can be placed on the frame 2C, and the outer end of the convex portion 222 is 600 ×. It just fits on the inner surface of the opening 311 of the lower plate 31C for 600. Therefore, the worker at the construction site can confirm that the lower profile plate 31C suitable for the gantry 2C is placed. Further, a welding allowance for joining the gantry 2C and the lower plate 31C is secured on the upper surface of the support portion 221.

On the other hand, when the frame 2C for 600 × 600 and the lower plate 31B for 550 × 550 are combined, the lower plate 31B for 550 × 550 is placed on the convex portion 222, and the state becomes unstable. Further, the convex portion 222 creates a gap between the support portion 221 and the supported portion 312. Therefore, the worker at the construction site can notice that the lower shape plate 31B is not suitable for the gantry 2C.

As described above, in the first embodiment of the present invention, the specifications of the anchor frame 3 and the gantry 2 are defined in advance in the standard so that an appropriate anchor frame 3 and the gantry 2 can be selected according to the specifications of the base plate 4. Has been done. Further, in this standard, each dimension is predetermined so that the gantry 2 and the anchor frame 3 having different specifications do not match.

In particular, when the width e of the support portion 221 of the gantry 2 is large to some extent, there is a possibility that the inferior plate 31 which does not conform to the specifications is conventionally mounted on the gantry 2 and the gantry 2 and the inferior plate 31 are welded to each other. rice field. However, in the present embodiment, the convex portion 222 is provided on the support portion 221. Therefore, it is possible to prevent the gantry 2 and the anchor frame 3 having different specifications from being erroneously assembled.

In the present embodiment, regarding the shape of the lower plate 31, two pairs of opposed supported portions are provided to form a frame shape having an opening 311. However, only one pair of opposed supported portions are provided to form a frame shape. It may be a thing. In this case, there is no opening because only one pair of supported portions facing each other is provided and no pair of supported portions orthogonal to the pair of supported portions are provided. Further, the horizontal member of the gantry may be similarly configured in correspondence with this.

[Second Embodiment]
Next, the column base anchor structure 1 of the second embodiment of the present invention will be described. The column base anchor structure 1 of the second embodiment has a different gantry configuration from the first embodiment. The specifications of the lower profile plate and the gantry are the same as those of the first embodiment shown in FIGS. 6 and 7.

FIG. 14 is a diagram showing a gantry 7 of the column base anchor structure 1 of the second embodiment. The gantry 7 has a support column 71, a horizontal member 72, and a jig 73.

The support column 71 is a member arranged perpendicular to the leveled concrete 5 (see FIG. 2). A steel material such as angle steel, which is long in the material axis direction, is used for the support column 71.

The horizontal member 72 is a member on which the lower plate 31 is placed on the upper surface. For the horizontal member 72, a steel material such as angle steel that is long in the material axis direction is used. Further, both ends of the horizontal member 72 are joined to the jig 73 and supported by the jig 73. Further, the horizontal member 72 has a support portion 721.

The support portion 721 is a portion that projects horizontally and in a direction away from each other from the upper ends of a pair of horizontal members 72 arranged in parallel with each other. The upper surface of the pair of support portions 721 abuts on the lower surface of the lower plate 31 to support the anchor frame 3.

The jig 73 is a member that is joined to the upper end of the support column 71 and supports the horizontal member 72. The jig 73 is formed by bending a strip-shaped plate member into a staircase shape.

FIG. 15 is a perspective view showing the structure of the jig 73. The jig 73 has a chevron portion 731, a protruding portion 732, a lateral member support portion 733, and a lip 734.

The chevron portion 731 is located in the central portion of the jig 73 and is a portion formed in a chevron shape. The outer surface of the chevron portion 731 is joined to the inner surface of the support column 71.

The protrusion 732 is a portion having one end extending from the end of the chevron portion 731, and is formed by being bent outward from the chevron portion 731 at an angle of 90 °. The protrusion 732 is provided to arrange the lateral member 72 outside the support column 71. That is, the relative position of the support column 71 with respect to the horizontal member 72 can be changed by changing the length of the protrusion 732.

The lateral member support portion 733 is a portion extending from the other end of the projecting portion 732, and is formed by being bent from the projecting portion 732 toward the longitudinal direction of the lateral member 72. The cross member support portion 733 is connected to the end portion of the cross member 72.

The lip 734 is formed by horizontally bending a portion extending upward near the end of the lateral member support portion 733. The lip 734 projects outward by a predetermined length from the vicinity of the end portion of the lateral member support portion 733 and extends to the upper surface of the support portion 721. That is, the lip 734 corresponds to the convex portion in the present invention. By designing the protruding length of the lip 734 according to the distance b between the inner ends of the pair of supported portions 312 of the lower profile plate 31, the outer end of the pair of lip (convex portions) 734 is the lower profile plate 31. It can be made to fit exactly on the inner surface of the opening 311. As a result, it can be confirmed at the construction site whether or not the lower shape plate 31 and the gantry 7 have the corresponding specifications.

FIG. 16 shows a state in which the lower shape plate 31 having appropriate specifications is placed on the base 7 (a state in which the lower shape plate for 550 × 550 is arranged on the base for 550 × 550). In this column base anchor structure 1, the outer end of the lip 734 is just fitted on the inner surface of the opening 311. That is, at the construction site, the lower shape plate 31 and the gantry 7 have specifications corresponding to each other by checking whether or not the outer end of the lip 734 fits in the inner side surface of the opening 311 of the lower shape plate 31. Can be confirmed.

FIG. 17 shows a state in which a lower shape plate 31 having a specification with a small interval lower than that of the pedestal 7 is placed (a state in which a lower shape plate for 500 × 500 is arranged on a pedestal for 550 × 550). There is. In this column base anchor structure 1, the lip 734 and the lower shape plate 31 overlap each other. Therefore, the lower plate 31 is placed on the gantry 7 in an unstable state. Further, the lip 734 creates a gap between the support portion 721 and the supported portion 312. As a result, at the construction site, it can be noticed that the lower shape plate 31 having a specification of a small interval with a lower stage is placed on the gantry 7.

FIG. 18 shows a state in which a lower shape plate 31 having a specification with a high step and a large interval is placed on the base 7 (a state in which a lower shape plate for 600 × 600 is arranged on a base for 550 × 550). Is shown. In this case, the gantry 7 is fitted into the opening 311 of the lower shape plate 31, and the lower shape plate 31 cannot be placed on the pedestal 7. As a result, at the construction site, it can be noticed that the lower shape plate 31 having a high-level and large-distance specification is placed on the gantry 7.

The lip 734 is not limited to the one formed by bending the plate member forming the jig 73, and may be joined to the horizontal member support portion 733 by welding or the like as shown in FIG. 19, for example.

[Other variants]
In the present embodiment, two convex portions are provided on each support portion, but the present invention is not limited to this. One convex portion may be provided on each support portion, or three or more convex portions may be provided. When one convex portion is provided on each support portion by using the lip of the jig, the lip as the convex portion may be provided only on one of the jigs. Further, as the convex portion provided on each support portion, a convex portion as in the first embodiment and a lip of a jig as in the second embodiment may be combined.

1 Pillar base anchor structure 2 Stand 21 Pillar 22 Horizontal member 221 Support part 222 Convex part 223 Welded part 23 Pedestal 3 Anchor frame 31 Bottom plate 311 Opening 312 Supported part 32 Anchor bolt 33 Nut 34 Nut 35 Top plate 4 Base plate 5 Leveling concrete 6 Foundation concrete 7 Stand 71 Pillar 72 Horizontal member 721 Support part 73 Jig 731 Yamagata part 732 Protruding part 733 Horizontal member support part 734 Lip (convex part)
a External dimensions b Space between supported parts c Space between outer ends d Space between inner ends e Width of support part Space between outer ends of convex parts g Width of convex parts

Claims (12)

It is a column base anchor structure including one profile plate selected from a plurality of profile plates whose specifications are defined by a standard, and a pedestal for supporting the one profile plate.
The gantry has a pair of supports that support the profile.
A convex portion is provided on the upper surface of the pair of support portions.
The profile has a pair of supported portions supported by the pair of support portions.
The standard defines the specifications of the profile so that the distance between the pair of supported portions is gradually increased, the specification is such that the distance is the first distance, and the distance is the first distance. Including a specification in which the second interval is one step larger than the second interval, and a third interval in which the interval is one step larger than the second interval.
The distance between the outer ends of the convex portions provided on the pair of support portions is equal to or greater than the first interval and equal to or less than the second interval.
A column base anchor structure in which the distance between the outer ends of the pair of support portions is equal to or greater than the second interval and equal to or less than the third interval. The column base anchor structure according to claim 1, wherein the difference between the first interval and the second interval is the same as the difference between the second interval and the third interval. A claim that when a profile plate having the second interval is installed on the gantry, a welding allowance for joining the support portion and the profile plate is secured on the upper surface of the support portion. The column base anchor structure according to 1 or 2. The gantry has a column arranged vertically and a jig for connecting the upper end portion of the column and the support portion to each other.
The column base anchor structure according to any one of claims 1 to 3, wherein the convex portion extends from the jig to the upper surface of the support portion. It is a stand that supports one shape plate selected from multiple shape plates whose specifications are defined by the standard.
It has a pair of supports that support the profile,
A convex portion is provided on the upper surface of the support portion in the pair.
The profile has a pair of supported portions supported by the pair of support portions.
The standard defines the specifications of the profile so that the distance between the pair of supported portions is gradually increased, the specification is such that the distance is the first distance, and the distance is the first distance. Including a specification in which the second interval is one step larger than the second interval, and a third interval in which the interval is one step larger than the second interval.
The distance between the outer ends of the convex portions provided on the pair of support portions is equal to or greater than the first interval and equal to or less than the second interval.
A gantry in which the distance between the outer ends of the pair of support portions is equal to or greater than the second interval and equal to or less than the third interval. The gantry according to claim 5, wherein the difference between the first interval and the second interval is the same as the difference between the second interval and the third interval. A claim that when a profile plate having the second interval is installed on the gantry, a welding allowance for joining the support portion and the profile plate is secured on the upper surface of the support portion. The mount according to 5 or 6. Further having a column arranged vertically and a jig for connecting the upper end portion of the column and the support portion to each other.
The gantry according to any one of claims 5 to 7, wherein the convex portion is a portion extending from the jig to the upper surface of the support portion. It is a design method of a column base anchor structure including one profile plate selected from a plurality of profile plates whose specifications are defined by a standard and a pedestal for supporting the one profile plate.
The gantry has a pair of supports that support the profile.
A convex portion is provided on the upper surface of the pair of support portions.
The profile has a pair of supported portions supported by the pair of support portions.
The standard defines the specifications of the profile so that the distance between the pair of supported portions is gradually increased, the specification is such that the distance is the first distance, and the distance is the first distance. Including a specification in which the second interval is one step larger than the second interval, and a third interval in which the interval is one step larger than the second interval.
The distance between the outer ends of the convex portions provided on the pair of support portions is set to be equal to or greater than the first interval and equal to or less than the second interval.
A method for designing a column base anchor structure, which comprises defining the distance between the outer ends of the pair of support portions to be equal to or greater than the second interval and less than or equal to the third interval. The design of the column base anchor structure according to claim 9, wherein the difference between the first interval and the second interval is set to be the same as the difference between the second interval and the third interval. Method. When a profile plate having the second interval is installed on the gantry, a welding allowance for joining the support portion and the profile plate is secured on the upper surface of the support portion. The method for designing a column base anchor structure according to claim 9 or 10, further comprising determining the spacing between the inner ends. The gantry further comprises a column arranged vertically and a jig for connecting the upper end portion of the column and the support portion to each other.
The method for designing a column base anchor structure according to any one of claims 9 to 11, wherein the convex portion extends from the jig to the upper surface of the support portion.

Images