JP2002364070A - Column fixing implement and column fixing construction method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column fixing implement and a column fixing construction method using the same, which can establish compatibility between securement of column fixing strength and cost reductions in a steel-frame building. SOLUTION: The column fixing implement 2 to be used is equipped with a base plate 3, which is fastened for fixation onto a foundation 32 by an anchor bolt 11, and a connecting plate 4 which is integrated with the base plate 3 and connected to a side wall of a bottom 1a of a column 1 by a bolt. After the implement 2 is fixed to the bottom 1a via the connecting plate 4 by a bolt connection, the base plate 3 of the implement 2 attached to the bottom 1a is placed on the foundation 32 and fastened for the fixation on the side of the foundation 32 by the anchor bolt 11. Such a constitution allows the column 1 to be fixed by using the implement 2, so as to eliminate direct welding for the bottom 1a, enable a reduction in welding cost and permit more inexpensive provision of the highly reliable column fixing construction method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column fixing tool for fixing columns of, for example, a steel structure on a foundation, and a method of fixing the columns.

[0002]

2. Description of the Related Art FIG. 16 shows a pillar 51 of a conventional steel structure.
3 shows a fixing structure. That is, conventionally, when the bottom 51a of the column 51 is fixed to the base 54 side, a flat board 52 is fixed to the bottom column 51a by welding.
Is generally fastened and fixed to the foundation 54 side by an anchor bolt 53 embedded in the foundation 54 side.

[0003]

However, the board 52 is fixed to the bottom 51a of the pillar 51 by welding, and the board 52 is fixed to the base 54 by the anchor bolt 53.
When the fixing method of fastening to the side is adopted, there are the following problems.

(A) The joint between the column 51 and the substrate 52 is an extremely important part in terms of strength performance, particularly in terms of earthquake resistance. Therefore, when joining the column 51 and the substrate 52 by welding, a high level of welding quality is required to be secured, but plants having a technical level that satisfies this are limited. As a result, according to the production at the factory having the required technical level, the welding cost is increased due to the addition of the technical fee, which in turn leads to an increase in the production cost of the steel frame as a whole. According to the production at the factory which does not reach the technical level, the pillar
Therefore, it is not possible to sufficiently secure the reliability in terms of the strength performance.

(B) The substrate 5 is mounted on a long and heavy pillar 51.
2 are directly welded together, and the welding workability is degraded by the size of the object to be welded, resulting in an increase in welding cost.

(C) Since the substrate 52 is fixed to the column 51 by welding, the column 51 is transported in such a manner that a part of the substrate 52 projects from the outer surface of the column 51. Is bulky as compared with the transport mode in the case of a single unit, and the transportation efficiency by the vehicle is inferior, resulting in an increase in transportation cost.

SUMMARY OF THE INVENTION The present invention has been made to propose a column fixing tool capable of achieving both securing of column fixing strength and cost reduction, and a column fixing method using the same.

[0008]

Means for Solving the Problems In the present invention, the following configuration is adopted as specific means for solving such problems.

The column fixing device according to the first invention of the present application is a substrate 3 on which a bottom portion 1a of a column 1 is abutted in an orthogonal state on an upper surface side while being fixedly fastened to a base 32 by an anchor bolt 11. And a joining plate 4 integrated with the substrate 3 and bolted to the side wall of the bottom 1 a of the column 1.

In a second aspect of the present invention, in the column fixture according to the first aspect, the column fixture 2 is formed by welding and joining the joining plate 4 on the substrate 3 in an upright state. It is characterized by:

According to a third aspect of the present invention, in the column fixture according to the second aspect, the joining plate 4 is arranged on the inner side with the outer joining plate 4A arranged on the outer side of the side wall of the column 1. And the outer bonding plate 4B
A and the inner joint plate 4B sandwich the side wall of the column 1 from both inside and outside.

According to a fourth aspect of the present invention, in the column fixture according to the first aspect, the column fixture 2 is formed by bolting the joining plate 4 on the substrate 3. .

According to a fifth aspect of the present invention, in the column fixture according to the fourth aspect, the joining plate 4 is connected to the substrate 3.
It is characterized in that it is constituted by an L-shaped plate material composed of a first plate portion 4a which is abutted and bolted and a second plate portion 4b which is abutted and bolted to the side wall of the column 1. .

In the column fixing method according to the sixth aspect of the present invention, the substrate 3 is fastened and fixed to the base 32 by the anchor bolts 11 and the bottom 1a of the column 1 is abutted on the upper surface thereof in an orthogonal state. And a joining plate 4 integrated with the substrate 3 and bolted to the side wall of the bottom 1a of the column 1 using the column fixing device 2. The column fixing device 2 is mounted on the bottom 1a of the column 1. Then, the substrate 3 of the column fixture 2 attached to the bottom 1a of the column 1 is placed on the base 32 while the substrate 3 is fixed by bolting via the bonding plate 4. It is characterized in that it is fastened and fixed to the base 32 side by the anchor bolt 11.

[0015]

According to the present invention, the following effects can be obtained by adopting such a configuration.

According to the column fixing device of the first invention of the present application, the column fixing member is fastened and fixed on the base 32 by the anchor bolt 11 and the bottom 1 a of the column 1 is abutted on the upper surface side in an orthogonal state. A base plate 3 and a bonding plate 4 integrated with the base plate 3 and bolted to the side wall of the bottom 1a of the column 1
It is characterized by having.

When the column fixture 2 of the present invention is used for fixing the column 1 to the foundation 32 side, the bottom 1 of the column 1
a and the joint plate 4 is fixed to the bottom 1a side by bolting.
The column 1 is fixed to the base 32 side by mounting the substrate 3 on the base 32 integrally with the base 32 and fastening and fixing the substrate 3 with the anchor bolt 11 provided on the base 32 side.

Therefore, since the pillar 1 can be transported to the construction site in a single state in which the overhang member such as a substrate is not provided on the bottom 1a, the transport efficiency is high, and cost reduction due to reduction of transport cost is achieved. I can do it.

Further, since there is no direct welding to the bottom 1a of the column 1, the welding cost can be reduced, and the cost can be reduced accordingly.

According to the column fixing device of the second invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, in the column fixture according to the first invention, the column fixture 2 is formed by welding and joining the joining plate 4 on the substrate 3 in an upright state. In the welding operation of the substrate 3 and the joining plate 4, the object to be welded is smaller and lighter than, for example, the case where the substrate is directly welded to the bottom of the column 1 as in the related art. The work can be performed quickly and with good workability, and the cost can be reduced accordingly.

The welding between the substrate 3 and the joining plate 4 is performed as follows.
For example, as compared with a conventional case in which the substrate is directly welded to the bottom of the column 1, the work form is simpler, so that the welding can be easily performed using, for example, a welding robot. It is possible to ensure both welding quality and cost reduction.

According to the pillar fixing device of the third invention of the present application, the following specific effects can be obtained in addition to the above-described hardening. That is, according to the present invention, in the column fixture according to the second invention, the joining plate 4 is connected to the column 1
An outer joint plate 4A disposed on the outer surface side of the side wall and an inner joint plate 4B disposed on the inner surface side, and the outer joint plate 4A and the inner joint plate 4B divide the side wall of the column 1 into the inner and outer sides. Therefore, frictional joining surfaces are formed on both the inner and outer sides of the side wall of the column 1 (realization of a so-called “two-sided sheared state”), for example, either the inner side or the outer side of the side wall of the column 1. Only in the case where the joining plate 4 is provided only on the one side (that is, in the case of a so-called “one-side shearing state” in which the friction joining surface is formed only on one of the inner and outer sides of the side wall), the occurrence in the joining plate 4 is increased It is possible to easily cope with a case where the supporting force increases and a greater column fixing strength is required. In addition, for example, when the required supporting force is the same as that in the "one-side sheared state", the number of joining bolts is reduced or the tightening torque of the joining bolt is reduced as compared with the case of "one-sided sheared state". Therefore, the cost of the column fixture can be reduced accordingly.

According to the column fixing device of the fourth invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, the column fixture 2
Is formed by bolting the joining plate 4 onto the substrate 3, so that the column fixture 2 is manufactured and the column fixture 2 is
All of the work of mounting the bottom 1a of the column 1 is bolted, and no welding is performed. As a result, since the bolt joining cost is much lower than the welding cost, the cost of the column fixture 2 and the cost of fixing the column 1 using the column fixture 2 can be reduced. It will be further promoted.

According to the column fixing tool of the fifth invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, the bonding plate 4
A first butted and bolted joint on the substrate 3
Since it is composed of an L-shaped plate material composed of a plate portion 4a and a second plate portion 4b which is abutted and bolted to the side wall of the column 1, the substrate 3 and the bonding plate 4 are joined together. When the column fixture 2 is formed, the substrate 3 and the first plate portion 4a of the bonding plate 4 are laminated and integrated to function as one strength member. For this reason, for example, the substrate 3
As compared with the case where this is constituted by a single plate material, the plate thickness can be set thinner by the strength borne by the first plate portion 4a, and the cost reduction is promoted. .

In the column fixing method according to the sixth aspect of the present invention, the substrate 3 is fixed on the foundation 32 by the anchor bolts 11, and the bottom 1 a of the column 1 is abutted on the upper surface thereof in an orthogonal state. And a joining plate 4 integrated with the substrate 3 and bolted to the side wall of the bottom 1a of the column 1 using the column fixing device 2. The column fixing device 2 is mounted on the bottom 1a of the column 1. The column 1 is fixed by bolting via the joining plate 4. Thereafter, the column 1 is erected, and the substrate 3 of the column fixing device 2 attached to the bottom 1 a of the column 1 is placed on the base 32. Since the substrate 3 is fastened and fixed to the foundation 32 side by the anchor bolts 11, (a) there is no direct welding portion to the bottom 1 a of the column 1, and welding is performed at the time of manufacturing the column fixture 2. If there was a place In this welding, the welding object is smaller and lighter than in the case where the substrate is directly welded to the bottom 1a of the column 1, and the welding operation can be performed easily and with good workability. It is possible to provide a highly reliable column fixing method at a lower cost because it can be welded by a welding method that can easily ensure a high level of welding quality, such as high welding performance, and high reliability is secured in terms of strength performance. (B) Since the mounting of the column fixture 2 to the bottom 1a of the column 1 is performed at the construction site, the column 1
The transportation efficiency to the construction site is high, and the cost of the entire steel structure including the transportation cost can be reduced.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on preferred embodiments.

A: First Embodiment FIGS. 1 to 4 show a column fixture 2 and a method of fixing a column 1 using the column fixture 2 according to a first embodiment of the present invention. In the figures, reference numeral 1 denotes a column, and 2 denotes a column fixing tool for fixing the column 1 to a foundation 32. The fixing of the bottom 1a of the column 1 to the foundation 32 is extremely important in terms of strength, particularly in terms of the seismic resistance of the entire steel structure using the column 1, and the strength performance is secured at a lower cost. The above-mentioned column fixing tool 2 is used as a means for performing this.

In the present embodiment, the column 1 is integrally formed of a square tube, and is erected and fixed on a foundation 32 via a column fixture 2 described below with its bottom 1a facing downward. . Since the column 1 is fixed via the column fixing member 2, the bottom 1a is used in a state where it is simply cut in a direction orthogonal to the axis. Therefore, as compared with the case where the substrate is directly joined to the bottom 1a of the column 1 by conventional welding, the number of processing steps for the column 1 is reduced, and at the time of transportation, the number of processing steps outward from the surface of the column 1 is reduced. Because there are few parts that extend to
As a synergistic effect of these, cost reduction is promoted.

As described above, the column fixture 2 is used for the column 1
A base plate 3 which is a rectangular flat plate having a size corresponding to the planar shape of the base 32, and which is attached to the bottom of the base 32 and fixed to the base 32 side. Four joint plates 4, 4, ... standing and fixed
It is composed of

The base plate 3 is made of a thick plate having a predetermined thickness corresponding to a required fixing strength, and each corner has an anchor bolt 11, 11,.
A plurality of bolt holes 21 corresponding to each of
21 are formed. A grout material injection hole 8 is formed substantially in the center of one side of the substrate 3 so as to penetrate the substrate 3 in the thickness direction (see FIGS. 1 and 2). A work hole 6 is formed at a substantially central position of the substrate 3.

The joining plate 4 is integrally formed of a substantially trapezoidal plate material having a predetermined thickness, and its long side dimension substantially matches the side dimension of the column 1. In the embodiment, four bonding plates 4 are provided so as to correspond to the respective sides of the column 1. Each of the bonding plates 4, 4,... Corresponds to the surface of each side of the column 1 in a state where the bottom 1a of the column 1 is placed at the center position of the substrate 3, and a predetermined distance from the surface. , And are fixed to each other in a square opposition so as to face each other with a gap (for example, about 3 mm), and are fixed by welding at this position and posture. Therefore, in a state where these four bonding plates 4, 4,... Are fixed on the substrate 3, the column 1 is surrounded by the respective bonding plates 4, 4,. . Since the welding of the joining plate 4 to the substrate 3 is performed by fillet welding with a single groove from the outside of the joining plate 4, a square rod body is provided inside the joining plate 4 as a backing material. 5 is arranged.
The backing members 5, 5,... Provided corresponding to the respective joining plates 4, 4,.
Are arranged in the shape of a square frame inside the backing members 5, 5,... In this embodiment, so that the backing members 5, 5,. The end face of the bottom 1a of the column 1 is placed on the upper surfaces of the members 5, 5,... (See FIG. 2). Further, the joint plate 4 is provided with a plurality of bolt holes 22, 22,... For fastening and fixing the joint plate 4 to the side wall of the column 1.

When manufacturing the column fixture 2, as described above, the bonding plates 4, 4,.
In this case, the two welding objects are, for example, a column and a substrate which are the objects to be welded in a case where the bottom of the column and the substrate are directly welded to each other as in the related art. Compared with the case of (1), both are small and lightweight, so that the work itself can be performed easily and with good workability, and a high-technical welding method such as a welding robot can be applied to the welding. Therefore, since it is possible to perform welding with high welding quality even if it is not necessarily a specific factory that has high-technical workers, highly reliable welding with high welding quality is realized, As a result, the column fixture 2 formed by joining the substrate 3 and the joining plates 4, 4,... Has higher strength performance.

In this embodiment, the four joining plates 4 are provided so as to surround the bottom 1a of the column 1 from the periphery thereof. The number is not limited, and for example, of the four surfaces of the column 1, two opposing specific surfaces (for example,
It is also possible to use two joining plates 4 so as to correspond to the two opposing surfaces in the beam direction of the steel structure, and to fix them to the substrate 3 side in an opposed state. This is a setting from the viewpoint that the strength in the girder direction of the steel structure can be secured by other means such as bracing.

Subsequently, the column 1 is fixed using the column fixture 2.
2 to 6 regarding the method of fixing the
This will be described with reference to FIG. Although not shown in FIG. 2,
At the approximate center of the upper surface of the base 32, a bowl-shaped level mortar is provided in advance.

When the column 1 is to be built, first, the column fixing tool 2 is mounted on the bottom 1a of the column 1 while the column 1 is laid on its side. That is, the bottom 1a of the pillar 1 laid down sideways
On the other hand, the column fixture 2 is connected to the respective joining plates 4, 4,.
, And the bottom end surfaces of the pillars 1 are brought into contact with the backing members 5, 5,... Located at the bottoms of the joining plates 4, 4,. The bottom portion 1a of the column 1 is inserted into the column fixture 2 by opposing the distance between the joining plates 4, 4,... On the column fixture 2 side with respect to the width of each side of the column 1 ( This is easily achieved by setting the inner size to be large and deforming outwardly due to the one-sided fillet welding of the joining plate 4.

Next, a hand is inserted through the work hole 6 from the base plate 3 side of the column fixture 2 through the work hole 6, and the bolt holes 22, 22,... Of the joint plates 4, 4,. ,
A joining bolt 9 is inserted into each of the bolt holes (not shown) on the side of the column 1 which overlaps with each other, and each of the joining bolts 9 protruding outside of each of the joining plates 4, 4,. The nut 12 is screwed. Then, these nuts 12 are tightened with a predetermined tightening torque, and the respective side walls of the column 1 and the respective bonding plates 4, 4,. In this case, as the nut 12 is tightened, the joint plate 4 is bent and deformed in a direction in which the joint plate 4 is drawn to the side wall of the column 1, and substantially the entire area of the joint plate 4 is as uniform as possible on the side wall of the column 1. , A required frictional force is generated on these joint surfaces, and the column 1 and the joint plate 4
Is securely joined and fixed.

Thereafter, the column 1 to which the column fixing device 2 is attached is lifted and transported to the foundation 32 side, and the substrate 3 of the column fixing device 2 is placed on the foundation 32, and The anchor bolt 11 is inserted through each of the bolt holes 21, 21,..., And the nut 14 is screwed through a washer 15 described below. In this state, since the substrate 3 is placed on the level mortar provided on the upper surface of the base 32, the lower surface of the substrate 3 and the base 3
A gap corresponding to the height of the level mortar is provided between the column 1 and the upper surface of the column 2, and the gap allows the pillar 1 to wake up and be adjusted.

After adjusting the rising of the column 1 and appropriately tightening the nuts 14 screwed to the anchor bolts 11, a grout material is inserted into the gap between the substrate 3 and the upper surface of the base 32. Fill. That is, as shown in FIG. 2, a mold 19 is
Closes the periphery of the gap. Thereafter, the injection nozzle 18 is inserted into the grout material injection hole 8 provided in the substrate 3.
The grout is injected and filled from the injection nozzle 18 into the gap through the grout injection hole 8.

In this case, as shown in FIG.
An annular gap 20 penetrating the substrate 3 in the thickness direction is formed between the inner peripheral surface of the bolt hole 21 on the side and the outer peripheral surface of the anchor bolt 11 inserted therethrough due to a difference in diameter between the two. Is formed. The washer 15 shown in FIG.
As shown in FIG. 6, grooves 1 are formed on both side walls so as to straddle the bolt holes 16 in the radial direction on the bottom surface 15 a side.
7 are formed. Therefore, when the washer 15 is in contact with the upper surface of the substrate 3, the groove 17 is continuous with the annular gap 20 as shown in FIG. The above gap faces the upper surface side of the substrate 3.

Accordingly, when the grout material is injected from the grout material injection hole 8 into the gap, the air in the gap is consequently released from the annular gap 20 through the annular gap 20 as shown by streamline A in FIG. , Which are attached to the anchor bolts 11, 11,..., Are discharged to the outside through the grooves 17 of the washers 15, 15,. The working hole 6 provided in the substrate 3 is closed by a level mortar.

When the gap is sufficiently filled with the grout material, the grout material itself is jetted from the annular gap 20 to the outer peripheral side of the washer 15 through the groove 17. By visually checking the spout of the grout material, the operator can confirm the completion of the filling of the grout material into the gap. As the grout hardens, a grout layer 7 is formed between the substrate 3 and the upper surface of the foundation 32, and the load applied to the column 1 is efficiently dispersed and supported on the foundation 32 side. become.

Thus, the work for constructing the column 1 is completed.

B: Second Embodiment FIGS. 7 to 10 show a column fixing tool 2 according to a second embodiment of the present invention and a method of fixing the column 1 using the same.

Since the column 1 has the same configuration as that of the first embodiment, the corresponding description in the first embodiment is referred to, and the description is omitted here.

The column fixture 2 has a welded structure in the first embodiment, but has a bolted structure in this embodiment, and has a board 3 and four joining plates 4. 4,... Are provided.

The base plate 3 is formed of a flat plate having a rectangular shape corresponding to the plane shape of the base 32, and each of the anchor bolts 11,
Two bolt holes 21 and 21 are formed at each corner so as to correspond to each of 11,. Also,
At an intermediate position between the pair of left and right bolt holes 21 and 21 on each side,
A plurality of bolt holes 24 for fixing the joining plate 4 described below are arranged in rows. Further, a grout material injection hole 8 is formed at a substantially central portion of one side of the substrate 3 by penetrating the same in the thickness direction.
Are formed. A work hole 6 is formed at a substantially central position of the substrate 3.

The joining plate 4 is joined to the substrate 3 by a first plate portion 4a, which is bent substantially at right angles to the first plate portion 4a, and is joined to the side wall of the column 1 by abutment. Second plate portion 4b
And an L-shaped plate member consisting of Further, a bolt hole 23 corresponding to the bolt hole 21 on the substrate 3 side and a bolt hole 25 corresponding to the bolt hole 24 are provided in the first plate portion 4a of the joining plate 4 respectively. Further, a plurality of bolt holes 22 are provided in the second plate portion 4b.

Then, the substrate 3 and the bonding plates 4
As shown in FIGS. 8 and 10, the bolt holes 24 on the substrate 3 and the bolts 24 on the first plate portion 4a side of the joining plate 4 overlapping with the bolt holes 24, 24,. Bolt holes 25,
.. Are joined and integrated by fitting the joining bolts 10 and tightening the nuts 13, respectively, to constitute the column fixture 2. Moreover, in this pillar fixing device 2,
A space having a rectangular planar shape is formed by each of the second plate portions 4b, 4b,.
The inner dimension between the pair of opposing second plate parts 4b, 4b among the second plate parts 4b, 4b,... Is set to be larger than the width dimension of each side of the column 1 by a predetermined dimension. Is the same as in the first embodiment.

The column fixture 2 is transported to the construction site in a state where it is disassembled into the substrate 3 and the bonding plates 4, 4,. Therefore, for example, the column fixture 2
Since each member is compact as compared with the case where is transported in a molded state (that is, a state where each of the bonding plates 4, 4,... It is highly efficient and contributes to reducing transportation costs. Further, the column fixing tool 2 is formed entirely by bolt joining without performing any welding joining. However, according to such a bolt joining structure, the bolt joining cost is significantly higher than the welding cost. Since it is inexpensive, the cost reduction of the column fixture 2 and the cost reduction of the fixing work of the column 1 using the column fixture 2 are further promoted.

Subsequently, the column 1 is fixed using the column fixture 2.
8 to 1 for the method of fixing the
0 will be described.

In constructing the column 1, first, the column fixing tool 2 is assembled at a construction site. That is, each of the bonding plates 4, 4,... Is placed at a predetermined position on the upper surface of the substrate 3, and in this state, the bonding bolt 10 is inserted between the two, and the nut 13 screwed thereto is screwed. By properly tightening, the substrate 3 and the bonding plates 4, 4,.
Are joined and integrated with each other, and the second plates 4b, 4b,... Of the joining plates 4, 4,. The column fixture 2 is formed.

Thereafter, the column fixture 2 is mounted on the bottom 1a of the column 1 while the column 1 is laid on its side. That is, the column fixture 2 is inserted into the bottom portion 1a of the column 1 laid from the side from the respective joining plates 4, 4,..., And the bottom end surface of the column 1 is placed on the upper surface of the substrate 3. Abut. The bottom 1a of the column 1 is inserted into the column fixture 2 by inserting the column 1
By setting the opposing interval (inner dimension) between the second plate portions 4b, 4b of the pair of joint plates 4, 4 facing each other on the column fixing tool 2 side larger than the width dimension of each side of the above, it is easy. Done.

Next, a hand is inserted through the work hole 6 from the side of the base plate 3 of the column fixture 2 through the work hole 6, and the bolt holes 22, 22,... Of the joint plates 4, 4,. ,
Each of the joint bolts 9 is inserted into a corresponding one of the bolt holes (not shown) on the side of the column 1 which overlaps with each other, and the joint bolts 9 projecting outward from the joint plates 4, 4,. Each nut 12 is screwed. Then, these nuts 12 are tightened with a predetermined tightening torque, and the respective side walls of the column 1 and the respective bonding plates 4, 4,. In this case, the nut 1
With the tightening of 2, the joint plate 4 is bent and deformed in a direction to be drawn toward the side wall of the column 1, and substantially the entire area of the joint plate 4 contacts the side wall of the column 1 as uniformly as possible. A required frictional force is generated on the joint surface of the column 1 and the column 1 and the joint plate 4 are securely joined and fixed.

Thereafter, the column 1 on which the column fixture 2 is attached is lifted and transported to the foundation 32 side, and the substrate 3 of the column fixture 2 is placed on the foundation 32, and 3 and the bolt holes 23, 23,... On the first plate portion 4a side of the joining plate 4 overlapping with the bolt holes 21, 21,.
The above-mentioned anchor bolts 11 are inserted through the respective nuts, and nuts 14 are screwed into the anchor bolts 11 through washers 15 described below.
In this state, since the substrate 3 is placed on the level mortar provided on the upper surface of the base 32, the height of the level mortar is set between the lower surface of the substrate 3 and the upper surface of the base 32. Is provided, and the up and down adjustment of the column 1 is enabled by the gap.

After adjusting the up and down of the pillar 1 and appropriately tightening the nuts 14 screwed to the anchor bolts 11, as in the case of the first embodiment, the board 3 The gap between the upper surface of the base 32 and the grout material is filled, and the grout layer 7 is formed thereon. Due to the formation of the grout layer 7, the load applied to the column 1 is efficiently dispersed and supported on the foundation 32 side.

Thus, the work for constructing the pillar 1 is completed.

The operation and effects other than those described above are the same as those in the first embodiment, and thus description thereof will be omitted.

C: Third Embodiment FIG. 11 shows a column fixing tool 2 according to a third embodiment of the present invention and a method of fixing the column 1 using the column fixing tool 2. In the figure, reference numeral 1 denotes a column, and 2 denotes a column fixing tool for fixing the column 1 to a foundation 32. The column fixture 2 in this embodiment is basically similar to the column fixture 2 of the first embodiment, and is different from the column fixture 2 of the first embodiment. In the first embodiment, the joining plate 4 is made of a single plate, whereas in this embodiment, the joining plate 4 is made of two plates arranged in a close facing state.

That is, in this embodiment, FIGS.
As shown in FIG. 14, four joining plates 4 which are fixed to the substrate 3 side by welding so as to surround the column 1
The outer joining plate 4A arranged on the outer surface side of the side wall of the column 1
And an inner joining plate 4B arranged on the inner surface side. The outer bonding plate 4A and the inner bonding plate 4B are respectively welded and fixed to the upper surface of the substrate 3 with an opposing interval larger than the outer plate thickness of the column 1 by a predetermined dimension.
In this case, the outer joint plate 4A has a single-sided groove from the outside, and the inner joint plate 4B has a single-sided groove from the inside, and both are fillet-welded.
That is, it is necessary to provide the backing material 5 between the outer bonding plate 4A and the inner bonding plate 4B. In addition, this backing material 5
Functions as a support for the column 1. In view of these facts, in this embodiment, the steel material of the column 1 is cut into a predetermined width and is cut into the backing material 5.
Used as The outer joint plate 4A and the inner joint plate 4B are coaxially overlapped in their facing directions so that a plurality of bolt holes 22, 22,.
・ ・ Is provided.

On the other hand, the substrate 3 is formed of a rectangular flat plate corresponding to the cross-sectional shape of the column 1, and at each corner thereof, a bolt hole 21 for inserting an anchor bolt is provided. The grout material injection hole 8 is provided at the center of one side as in the case of the column fixture 2 of the first embodiment.

At the time of manufacturing the column fixture 2, as described above, the bonding plates 4, 4,.
(That is, the outer joint plate 4A and the inner joint plate 4B) are fixed by welding. In this case, in this welding operation, these three objects to be welded, for example, connect the bottom of the column and the substrate as in the conventional case. Compared to the case of a column and a substrate to be welded in the case of direct welding, both are smaller and lighter, so that the work itself can be performed easily and with good workability. It is possible to apply welding technology with high technical level, and it is possible to perform welding with high welding quality even if it is not necessarily a specific factory that has high technical level workers. A highly reliable welding having a welding quality is realized, and the column formed by joining the substrate 3 and the outer joining plate 4A and the inner joining plate 4B of the joining plates 4, 4,... Fixture 2 is higher It will have the strength performance.

Subsequently, the column 1 is fixed to the column 1 using the column fixture 2.
Will be described with reference to FIGS. 12 to 14.

When the column 1 is to be built, first, the column fixing tool 2 is mounted on the bottom 1a of the column 1 while the column 1 is laid on its side. That is, the bottom 1a of the pillar 1 laid down sideways
On the other hand, the column fixture 2 is connected to the respective joining plates 4, 4,.
From the side, each side wall of the column 1 is inserted between the outer joint plate 4A and the inner joint plate 4B of each of the joint plates 4, 4,... To form a gap between the outer joint plate 4A and the inner joint plate 4B. The bottom end surface of the column 1 is brought into contact with the backing material 5 located at the bottom of the column. When the side wall of the bottom 1a of the column 1 is inserted into each of the joining plates 4, 4,... Of the column fixture 2, the inner joining of the column 1 with the outer joining plate 4A is larger than the thickness dimension of each side wall. The distance between the plates 4B is set to be large by a predetermined dimension, and the outer and inner joint plates 4B are deformed outwardly and inwardly due to one-sided fillet welding of the inner joint plate 4B (that is, the facing distance is increased). (The deformation in the direction of the movement).

Next, a hand is inserted through the work hole 6 from the side of the substrate 3 of the column fixture 2 through the work hole 6, and the outer joint plate 4A and the inner joint plate 4A of the joint plates 4, 4,.
B, bolt holes 22, 22 respectively provided in a superposed state;
A joining bolt 9 is inserted into a bolt hole (not shown) on the side of the column 1 that overlaps with the nut, and a nut 12 is screwed into the protruding end. And these nuts 12
Are tightened with a predetermined tightening torque, and the side walls of the column 1 are joined by the outer joint plate 4A and the inner joint plate 4B of the joint plate 4 from both the inside and the outside in a sandwiched state to integrate them. In this case, as the nut 12 is tightened, the outer joint plate 4A and the inner joint plate 4B are both bent and deformed in a direction in which the outer joint plate 4A and the inner joint plate 4B are drawn toward the side wall of the column 1.
A and the inner joint plate 4B almost entirely contact the side wall of the column 1 as much as possible, and a required frictional force is generated on these joint surfaces, so that the column 1 and the joint plate 4 are securely connected. It will be joined and fixed.

In this way, each side wall of the column 1 is sandwiched and joined from both the inner and outer surfaces by the outer bonding plate 4A and the inner bonding plate 4B of the bonding plate 4, whereby the side wall of the column 1 is formed. Friction joint surfaces are formed on both the inner and outer sides, respectively, so that a so-called "two-side shear state" is realized. As a result, for example, the pillar 1
When the joining plate 4 is provided only on one of the inner and outer sides of the side wall (for example, as in the first embodiment, a so-called "one-side sheared state" in which the friction joining surface is formed only on the outer side of the side wall). In this case, the supporting force generated in the joint plate 4 is increased as compared with the case of the above. Therefore, it is possible to easily cope with a case where a larger column fixing strength is required. If the required supporting force is the same as that in the "one-side sheared state", the number of joining bolts or the tightening torque of the joining bolts can be reduced compared to the "one-side sheared state". The cost of the column fixture can be reduced.

Thereafter, the column 1 on which the column fixture 2 is mounted is lifted and transported to the foundation 32 side, and the substrate 3 of the column fixture 2 is placed on the foundation 32, and 3 and the bolt holes 23, 23,... On the first plate portion 4a side of the joining plate 4 overlapping with the bolt holes 21, 21,.
The above-mentioned anchor bolts 11 are inserted through the respective nuts, and nuts 14 are screwed into the anchor bolts 11 through washers 15 described below.
In this state, since the substrate 3 is placed on the level mortar provided on the upper surface of the base 32, the height of the level mortar is set between the lower surface of the substrate 3 and the upper surface of the base 32. Is provided, and the up and down adjustment of the column 1 is enabled by the gap.

After adjusting the rising of the pillar 1 and appropriately tightening the nuts 14 screwed to the anchor bolts 11, as in the case of the first embodiment, the board 3 The gap between the upper surface of the base 32 and the grout material is filled, and the grout layer 7 is formed thereon. Due to the formation of the grout layer 7, the load applied to the column 1 is efficiently dispersed and supported on the foundation 32 side.

Thus, the work for constructing the column 1 is completed.

Since the other operation and effects are the same as those of the first embodiment, the description is omitted here.

D: Fourth Embodiment FIG. 15 shows a column fixture 2 according to a fourth embodiment of the present invention and a method of fixing the column 1 using the column fixture 2. In this embodiment, in the first to third embodiments, the column 1 is formed of a square tube,
The column 1 is made of an H-shaped steel.

In this embodiment, the pillar 1 is
The fixing direction is set so that the plane direction of the web 1b matches the girder direction of the steel structure. These settings are
Based on the basic idea of securing the strength in the girder direction of a steel structure by other means such as bracing, and securing only the strength performance in the beam direction by the fixing structure using the column fixture 2 described below. It is. Therefore, the column fixture 2 also has a configuration corresponding to the basic idea.

That is, the column fixture 2 includes a substrate 3 and a pair of joining plates 4 and 4. The substrate 3 is made of a rectangular thick plate, and is provided with a bolt hole 21 for inserting an anchor bolt at each corner thereof, and a grout material injection hole 8 at the center of one side.

The joining plate 4 is made of a substantially trapezoidal plate material. In this embodiment, a pair of joining plates 4 is used, and these two joining plates 4 and 4 are separated by a predetermined distance (specifically, the column The two flanges 1c, 1c are opposed to each other with a predetermined dimension larger than the outer dimension between the two flanges 1c, 1c, and are respectively fixed to the substrate 3 by welding. When welding the joining plate 4, a backing material 5 is used on the back side of the joining plate 4, and this backing material 5 is used as described later.
It is used as it is as a support member for the column 1.

Further, the joining plate 4 is provided with the column 1
A plurality of bolt holes 22 for bolting to the flanges 1c, 1c are provided. Further, bolt holes 26 are provided in the flanges 1c of the column 1 at positions corresponding to the bolt holes 22 on the joining plate 4 side.

When the column 1 is fixed on a foundation (not shown) using the column fixing device 2, first, the column 1 is laid on its side and the column fixing device 2 is fixed to its bottom 1a.
Is inserted so that the bottom 1a of the column 1 is located between the pair of joining plates 4 and 4, and of the bottom end surface of the column 1,
The part corresponding to the flange 1c is attached to the backing material 5,
The portions corresponding to the webs 1c are brought into contact with the substrate 3 respectively.

Thereafter, each flange 1c, 1
c and a pair of joining plates 4 and 4 are fastened and joined by joining bolts 9. Preparation of the work for fixing the column 1 is thus completed. Thereafter, the work is performed according to the work procedure described in each of the above embodiments, but the description thereof will be omitted.

The other functions and effects are the same as those of the first and third embodiments.

D: Others (1) In the first to third embodiments, the column 1
Is constituted by a square tubular body, and in the fourth embodiment, the column 1 is constituted by an H-shaped steel. However, the present invention is not limited to the material form of the column 1, for example, Third
It is a matter of course that the H-shaped steel can be used as the column 1 in the embodiment described above, and conversely, a square tube can be used as the column 1 in the fourth embodiment.

(2) In the second embodiment,
Although the joining plate 4 is shown as an example in which a plate material is formed by bending, the present invention is not limited to such a bent plate material. For example, a non-bending material such as L-shaped steel may be used.

(3) In the second embodiment,
Although the joining plate 4 is made of a single L-shaped plate, when a larger supporting load is required, the plate is welded to the substrate 3 so as to be positioned inside the column 1, for example. It is needless to say that the column 1 can be attached by joining or bolting, and the side wall of the column 1 can be sandwiched from both sides by the plate member and the second plate portion 4b of the joining plate 4 to form a two-plane shearing state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a column fixing tool according to the present invention.

FIG. 2 is a cross-sectional view showing a column fixing state by the column fixing tool shown in FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an enlarged sectional view of an anchor bolt fixing portion.

FIG. 6 is a perspective view of the washer shown in FIG.

FIG. 7 is a perspective view showing a second embodiment of the column fixture according to the present invention.

FIG. 8 is a cross-sectional view illustrating a column fixing state by the column fixing tool illustrated in FIG. 7;

FIG. 9 is a view on arrow IX-IX of FIG. 8;

FIG. 10 is a sectional view taken along the line XIV in FIG. 9;

FIG. 11 is a perspective view showing a third embodiment of a column fixture according to the present invention.

FIG. 12 is a cross-sectional view showing a column fixing state by the column fixing tool shown in FIG.

FIG. 13 is a view taken in the direction of arrows XIII-XIII in FIG. 12;

FIG. 14 is a sectional view taken along the line XIV-XIV of FIG.

FIG. 15 is a perspective view showing a fourth embodiment of the column fixture according to the present invention.

FIG. 16 is a perspective view showing a conventional column fixing structure.

[Explanation of symbols]

1 is a column, 2 is a column fixture, 3 is a substrate, 4 is a joining plate, 5 is a backing material, 6 is a working hole, 7 is a grout layer, 8 is a grout material injection hole, 9 is a joining bolt, and 10 is a joining. Bolt, 11 is an anchor bolt, 12 and 14 are nuts, 15 is washer, 16
Is a bolt hole, 17 is a groove, 18 is an injection nozzle, 19 is a mold, 20 is an annular gap, and 21 to 25 are bolt holes.

Claims (6)

[Claims] An anchor bolt (1) on a foundation (32).
1) a substrate (3) on the upper surface side of which the bottom (1a) of the column (1) is abutted in an orthogonal state, and the substrate (3) integrated with the substrate (3) and 1)
Plate (4) bolted to the side wall of the bottom (1a)
And a column fixture. 2. The column fixing device according to claim 1, wherein the column fixture is formed by welding and joining the joining plate in an upright state on the substrate. Column fixture. 3. The joining plate (4) according to claim 2, wherein the joining plate (4) is disposed on an outer surface side of a side wall of the column (1) and an inner joining plate (4B) disposed on an inner surface side. ), Wherein the outer joint plate (4A) and the inner joint plate (4B) sandwich the side wall of the column (1) from both inside and outside thereof. . 4. The column fixing device according to claim 1, wherein the column fixing device (2) is formed by bolting the joining plate (4) onto the substrate (3). 5. The pillar (1) according to claim 4, wherein the bonding plate (4) is abutted on the substrate (3) and bolted to a first plate portion (4a) and a side wall of the column (1). Second plate portion (4b) to be abutted and bolted
And a L-shaped plate member comprising: 6. An anchor bolt (1) on a foundation (32).
A substrate (3), which is fastened and fixed by (1) and has a bottom (1a) of the column (1) abutted on the upper surface thereof in an orthogonal state, and a substrate (3) integrated with the substrate (3) and the column (1). 1)
Plate (4) bolted to the side wall of the bottom (1a)
And the column fixing tool (2) is fixed to the bottom (1a) of the column (1) by bolt bonding via the bonding plate (4). The above pillar (1)
The substrate (3) of the column fixture (2) attached to the bottom (1a) is placed on the foundation (32), and the substrate (3) is attached to the foundation (3) by the anchor bolt (11). 32) A column fixing method characterized by fastening to the side.