JP2009062717A - Fixing structure of column base section, steel-pipe column material, and panel body equipped with the steel-pipe column material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a column base section, which absorbs the construction installation error of an anchor bolt, which enables the accurate installation of a steel-pipe column, which enables jointing more akin to the pin jointing and fixing of the column base of the steel-pipe column, which eliminates the protrusion of a base plate etc. from a surface of the steel-pipe column, and which enables other members to be easily mounted on a column. <P>SOLUTION: An anchor bolt 3 having a head with a bearing portion 1 is fixed onto a foundation; a plate material 11 with a hole 9, through which the bearing portion 1 can be inserted, is fixed inside the lower section of the steel-pipe column 7; the steel-pipe column 7 is erected on the foundation in the state of the insertion of the anchor bolt 3; and a grout material 13 is injected into the lower section of the steel-pipe column 7, so that the lower section of the steel pipe and the anchor bolt 3 can be joined together by the grout material 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a steel pipe column fixing structure, a steel pipe column material capable of realizing the fixing structure, and a panel body including the steel pipe column material.
The steel pipe column can be used for a steel structure, a light steel structure, a thin plate lightweight structure (steel house), and includes various shapes such as a square steel pipe column and a round steel pipe column.

  For example, as shown in FIG. 11, a conventional method of fixing the column base of a steel pipe column is to weld a base plate 53 that protrudes from the column surface to the side surface to the lower end surface of the steel pipe column 51, and the steel pipe column 51 of the base plate 53. The portion protruding outward is fixed to an anchor bolt 57 fixed to the base 55 (first conventional example) (refer to the conventional technique of Patent Document 1).

  Further, as another example of a type in which the base plate 53 is welded to the lower end surface of the steel pipe column 51, as shown in FIG. Some have a notch 59 and are fixed to the base plate 53 and the anchor bolt 57 inside the column (second conventional example).

Also, there is a type that does not use a base plate. For example, as shown in FIG. 13, one piece of an L-shaped angle member 61 is joined to the side surface of the steel pipe column 51 with a bolt 62, and the other piece of the angle member 61 is attached. The anchor bolt 57 on the foundation is used (third conventional example).
Further, as a type not using a base plate and another example, as shown in FIG. 14, an insert 63 having a substantially U-shaped cross section is fixed to a base 55 with an anchor bolt 57 in advance, and then a steel pipe column 51 In some cases, a bolt 65 is joined from the outer surface of the pillar (fourth conventional example).
Japanese Patent Laid-Open No. 6-10410

However, any of the above conventional examples has problems.
First, as a problem common to all the conventional examples, a base plate 53 to be welded or bolted to a column side, an angle member 61, and an anchor bolt 57 fixed to a base 55 in a hole provided in an insert 63 are inserted. The anchor plate 57 and the anchor bolt 57 are joined by bolts. The anchor bolt 57 fixed to the base 55 is usually accompanied by a slight construction error. It is difficult to accurately arrange the pillars by absorbing this error without enlarging.

  In addition, as in the first conventional example (see FIG. 11) and the second conventional example (see FIG. 13), when the joint portion with the anchor bolt 57 is in a position where the business trips to the outside of the steel pipe column 51, As shown in FIG. 15, when the horizontal force is applied, a bending moment is applied to the column base, so that the support strength of the steel pipe column 51 is increased. Not only decreases, but also the additional pulling of the anchor bolt 57 causes a problem that the proof stress decreases.

In this regard, as in the first conventional example (see FIG. 12), when the anchor bolt 57 is placed inside the column, it can be brought close to a pin-joined state, but in order to tighten a nut that is screwed to the anchor bolt 57, a steel pipe column. There is a problem that the side face of the material needs to be greatly cut out, and there is a problem that the yield strength is reduced due to this cross-sectional defect, and that the work of notching is required.
On the other hand, in the case of the method of interpolating hardware as in the fourth conventional example (see FIG. 14), the notch of the column is not necessary, and the joint is structurally close to the pin fulcrum. However, in the case of this method, since the side surface of the steel pipe column 51 and the insert 63 are bolted together, it is necessary to perform the position accuracy of both of them very strictly, and the construction is difficult, and the cost of the hardware is also increased. There is a problem.

  Further, as in the first conventional example and the third conventional example, the base plate 53 and the angle member 61 protrude from the steel pipe column 51, and the bolts from the column outer surface side as in the fourth conventional example. In the type to be joined, the base plate 53, the angle member 61, or the bolt 65 for fixing the hardware protrudes from the outer surface of the column, and therefore there is a problem that it becomes an obstacle when another member is attached in contact with the steel pipe column 51. .

As described above, there are various problems in the conventional fixing structure of the column base, and it is an object of the present invention to solve these problems, which are summarized as follows.
(1) Absorb the installation error of anchor bolts and realize accurate installation of steel pipe columns.
(2) Realizing a joint closer to the column base pin joint assumption of a steel pipe column.
(3) Protrusion of the base plate from the surface of the steel pipe column is eliminated, and attachment of other members to the column is facilitated.

(1) The column base portion fixing structure according to the present invention is a plate material in which an anchor having a bearing portion at the head is fixed on the foundation, and a plate material having a hole through which the bearing portion can be inserted into the lower portion of the steel pipe column. A fixed steel pipe column is erected on the foundation with the anchor inserted, and a grout material is injected into the lower part of the steel pipe column, and the lower part of the steel pipe and the anchor are joined by the grout material. It is what.

(2) Further, in the above (1), a grout injection hole is provided on the lower side surface of the steel pipe column.

(3) Further, in the above (1) or (2), an overflow hole for overflowing the grout material is provided on the lower side surface of the steel pipe column.

(4) Moreover, the steel pipe column material according to the present invention fixes a plate material provided with a hole through which the bearing portion of the anchor having a bearing portion at the head can be inserted into the lower portion, and grout on the lower side surface. It is characterized by having a hole for injection.

(5) Further, in the above (4), an overflow hole for overflowing the grout material is provided on the lower side surface of the steel pipe column.

(6) Moreover, the panel body which concerns on this invention is equipped with at least 1 steel pipe column material as described in said (4) or (5), It is characterized by the above-mentioned.

  In the present invention, an anchor having a bearing part on the head is fixed on the foundation, and a steel pipe column on which a plate member having a hole through which the bearing supporting part of the anchor can be inserted is fixed on the foundation. Since the grouting material is injected into the lower part of the steel pipe column and the steel pipe lower part is anchored to the anchor with the grouting material, the installation error of the anchor bolt is absorbed. The steel pipe column can be installed accurately and can be connected more closely to the assumption of the column base pin connection of the steel pipe column, and the protrusion of the base plate from the surface of the steel pipe column is eliminated, making it easy to attach other members to the steel pipe column. .

[Embodiment 1]
FIG. 1 is an explanatory view of a fixing structure of a column base part according to an embodiment of the present invention, and shows a cross section of the column base part. FIG. 2 is a perspective view of the lower structure of the steel pipe column material for realizing the column base fixing structure of the present invention, and FIG. 3 is a lower sectional view of the steel tube column material. FIG. 4 is an explanatory view of an anchor bolt fixed on the foundation.
Hereinafter, the present embodiment will be described with reference to FIGS.

In the column base fixing structure according to the present embodiment, an anchor bolt 3 having a bearing part 1 at the head is fixed on a foundation 5, and the bearing part 1 of the anchor bolt 3 is placed inside a steel pipe column 7. A steel pipe column 7 to which a steel plate 11 having a hole 9 through which can be inserted is fixed is erected in a state in which the anchor bolt 3 on the foundation is inserted, and a grout material 13 is injected into the lower part of the steel pipe column 7 so that the grout The steel pipe pillar lower part and the anchor bolt 3 are joined by the material 13.
Hereinafter, each configuration will be described in detail.

<Anchor bolt>
The anchor bolt 3 is fixed to the foundation 5 in advance as shown in FIG. On the head of the anchor bolt 3, a pressure bearing plate 17 is installed between two nuts 15a and 15b. The nuts 15 a and 15 b and the bearing plate 17 serve as the bearing unit 1.

<Steel pipe column>
As shown in FIG. 2, the steel pipe column 7 is a square steel pipe in this embodiment. But the steel pipe pillar 7 is not restricted to a square steel pipe, A round shape and another shape may be sufficient.
A steel plate 11 having a hole 9 through which a bearing plate 17 provided on the anchor bolt 3 can be inserted is welded inside the lower portion of the steel pipe column 7.
The mounting position of the steel plate 11 is a position where the required weld leg length is entered from the bottom surface of the steel pipe column, but the distance h between the lower nut 15b of the anchor bolt head and the top surface of the steel plate is the distance from the peripheral surface of the anchor bolt 3 to the inner surface of the steel pipe. When L is satisfied, it is preferable to satisfy h ≧ L.
By setting in this way, it becomes possible to transmit force over the entire surface of the steel plate 11, and the thickness of the steel plate 11 can be reduced.

The hole 9 provided in the steel plate 11 has such a size that the bearing plate 17 can be inserted therein. For example, the hole 9 has a diameter larger by about 10 mm than the diameter of the bearing plate 17.
On the side surface of the steel pipe column 7, a grout injection hole 19 for injecting a grout agent is provided at a position higher than the top of the anchor bolt in the state where the steel pipe column is installed, and a surface on which the grout injection hole 19 is provided. The opposite surface is provided with an overflow hole 21 for overflowing the grout at the same height as the grout injection hole 19.

<Grout material>
The grout material 13 is poured from the grout injection hole 19 and solidifies to join the steel pipe column 7 and the anchor bolt 3.
The grout material 13 is preferably a non-shrink grout material.

Next, the construction method of the column base fixing structure having the above-described structure will be described with reference to FIG. 5 taking as an example the case where the steel pipe column 7 is installed alone.
An L-shaped metal piece 23 for temporarily fixing the steel pipe column 7 at the time of construction is attached to the side surface of the steel pipe column 7 with a screw 25 that can be removed later. Further, temporary fixing anchor bolts 27 for positioning and temporarily fixing the steel pipe columns 7 are installed on the foundation 5.
The lower part of the steel pipe column 7 is inserted so that the anchor bolt head is inserted into the hole 9 of the steel plate 11. Then, the bolt hole 28 of the L-shaped metal piece 23 is aligned with the anchor bolt 27 for temporary fixing provided on the foundation 5 and fixed with the nut 29. At this time, since there is a certain gap between the anchor bolt 3 and the hole 9 of the steel plate 11, the steel pipe column 7 can be aligned at a predetermined position even if the position of the anchor bolt 3 is shifted. .
In addition, the anchor bolt 27 for temporary fixation may use the anchor of post-installation construction etc. in order to take out a position correctly.

After temporarily fixing the steel pipe column 7, the non-shrink grout material 13 is injected into the steel pipe from the grout injection hole 19 provided on the side surface of the steel pipe column 7, and it is confirmed that the grout material 13 leaks from the overflow hole 21. .
After injecting the grout material 13, the side surface of the steel pipe column is hit with a hammer or the like so that the grout material 13 is filled without gaps.
As described above, when the injection of the grout material 13 is completed and the grout material 13 is solidified, the anchor bolt 3 and the grout material 13 are integrated, and the steel pipe column 7 is fixed to the foundation 5.
If the L-shaped hardware 23 for temporary fixing is in the way, the screw 25 is removed and removed after the column base is fixed.

When a pulling force is applied to the steel pipe column 7 after fixing, the force is transmitted to the grout material 13 by the support pressure of the steel plate 11 below the steel pipe column, and the anchor bolt 3 is further applied by the support pressure of the support plate 17 of the anchor bolt head. The force is transmitted from to the foundation 5.
Thus, since the steel pipe column 7 is joined to the anchor bolt 3 provided in the inside thereof, joining closer to the column leg pin joining assumption of the steel pipe column 7 is realized.
Moreover, since there is no protrusion on the outer surface of the steel pipe column 7, there is no obstacle when attaching other members to the steel pipe column 7, and construction can be facilitated.
For example, as shown in FIG. 6, after installing the steel pipe column 7, when the opening panel 30 is installed between the steel pipe columns 7, the opening panel 30 is installed in contact with the side surface of the steel pipe column 7. be able to.

  In the conventional example, since the steel pipe column is fixed by bolting with an anchor bolt, there is a problem that it is difficult to absorb the error with the anchor bolt that causes a construction error. In this embodiment, the steel pipe column and the anchor are fixed. If the exact position of the steel pipe column is determined by the bolt position for temporarily fixing the steel pipe column by fixing the bolt with the grout material 13, the relative position of the anchor bolt and the steel pipe column can be determined to some extent freely. That is, the construction error of the anchor bolt can be absorbed and the steel pipe column can be fixed at an accurate position.

[Embodiment 2]
FIG. 7 is an explanatory diagram of a panel body according to an embodiment of the present invention.
The panel body 31 according to the present embodiment includes a steel pipe column member 33 disposed on both sides, an upper frame member 35 and a lower frame member 37 that connect the upper end portion and the lower end portion of the steel tube column member 33, and a steel pipe column member, respectively. The three pillars 39 provided between 33 are provided.
The steel pipe column member 33 is the same as that described in the first embodiment.
As described in the first embodiment, the steel pipe column member 33 is not limited to a square steel pipe, and may be a round steel pipe or other shapes.

  By using the same steel pipe column material 33 as in the first embodiment, there is nothing protruding on the outer surface of the steel pipe column material 33 as a structure for fixing the steel pipe column material 33 to the foundation 5. 7, the upper frame member 35 and the lower frame member 37 can be attached to arbitrary positions.

FIG. 8 and FIG. 9 are explanatory views of a method for fixing the panel body 31 shown in FIG. 7, and show the part surrounded by the dotted circle in FIG.
Hereinafter, a method for fixing the panel body 31 according to the present embodiment will be described with reference to FIGS.

As shown in FIG. 8, bolt holes 41 for positioning the panel body 31 are provided in the lower frame member 37. The steel pipe column member 33 in the panel body 31 is inserted so that the anchor bolt 3 is inserted into the hole 9 of the steel plate 11. Then, the bolt hole 41 of the lower frame member 37 is aligned with the anchor bolt 27 for temporary fixing provided on the foundation 5 and fixed with the nut 29. At this time, since there is a certain gap between the anchor bolt 3 and the hole 9 of the steel plate 11, even if the position of the anchor bolt 3 is shifted, the panel body 31 can be aligned at a predetermined position. .
As in the case of the first embodiment, the anchor bolt 27 for temporary fixing may be a post-installed anchor bolt or the like in order to accurately obtain the position.

  After temporarily fixing the panel body 31, as shown in FIG. 9, the grout material 13 is injected and the panel body 31 is fixed by fixing it as described in the first embodiment. To do.

In the present embodiment, as the structure for fixing the steel pipe column material 33 to the foundation 5 as a structure for fixing the steel pipe column material 33 to the foundation 5 by using the same steel pipe column material 33 as that of the first embodiment, Since there is nothing, after installing the panel body 31 in the foundation 5, the same panel body 31 can be installed without opening a gap immediately next to it.
As described above, the panel body 31 of the present embodiment has an excellent effect that the degree of freedom in construction is high because there is nothing to project outward in the fixing structure.

  In the first and second embodiments described above, the anchor bolt is shown with the bearing plate 17 sandwiched between the nuts 15a and 15b at the head, but the anchor of the present invention is not limited to this. As shown in FIG. 10, an anchor bolt 45 having an umbrella-shaped anchor head 43 may be used.

It is explanatory drawing of the fixing structure of the column base part which concerns on one embodiment of this invention. It is a perspective view of the lower structure of the steel pipe pillar material for implement | achieving the fixing structure of the column base part of this invention. FIG. 3 is a lower cross-sectional view of the steel pipe column shown in FIG. 2. It is explanatory drawing of the anchor bolt which concerns on one embodiment of this invention. It is explanatory drawing of the construction method of the fixing structure of the column base part which concerns on one embodiment of this invention. It is explanatory drawing of the construction method of the fixing structure of the column base part which concerns on one embodiment of this invention. It is explanatory drawing of the panel body which concerns on one embodiment of this invention. It is explanatory drawing of the fixing method of the panel body shown in FIG. It is explanatory drawing of the fixing method of the panel body shown in FIG. It is explanatory drawing of the other aspect of the anchor bolt which concerns on one embodiment of this invention. It is explanatory drawing of a 1st prior art example. It is explanatory drawing of the 2nd prior art example. It is explanatory drawing of a 3rd prior art example. It is explanatory drawing of the 4th prior art example. It is explanatory drawing of the subject of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supporting part 3 Anchor bolt 5 Foundation 7 Steel pipe pillar 9 Hole 11 Steel plate 13 Grout material 15a, 15b Nut 17 Supporting plate 19 Grout injection hole 21 Overflow hole 23 L-shaped metal fitting 25 Screw 27 Temporary fixing anchor bolt 29 Nut 31 Panel body 33 Steel pipe column material 35 Upper frame material 37 Lower frame material 39 Intermediary column 41 Bolt hole 43 Anchor head 45 Anchor bolt

Claims (6)

An anchor having a bearing part on the head is fixed on the foundation, and a steel pipe column having a plate member having a hole through which the bearing part can be inserted is fixed on the foundation with the anchor inserted. A structure for fixing a column base, characterized in that a grout material is injected into a lower portion of the steel pipe column and a steel pipe lower portion and the anchor are joined by the grout material. 2. The column base fixing structure according to claim 1, wherein a grout injection hole is provided in a lower side surface of the steel pipe column. The column base fixing structure according to claim 1 or 2, wherein an overflow hole for overflowing the grout material is provided on a lower side surface of the steel pipe column. A steel pipe characterized in that a plate member provided with a hole through which the bearing portion of the anchor having a bearing portion at the head can be inserted is fixed inside the lower portion, and a hole for grout injection is provided on the lower side surface. Column material. The steel pipe column material according to claim 4, wherein an overflow hole for overflowing the grout material is provided on a lower side surface of the steel pipe column. A panel body comprising at least one steel pipe column material according to claim 4 or 5.

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