JPH09158125A - Reinforcing method of existing column and reinforcing metal tool for column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and efficiently reinforce existing RC columns like an elevated way or a bridge of a highway or a railroad. SOLUTION: Two sheets of lining materials are arranged with a specified space around an existing column. The connecting parts of the lining materials are joined by connecting members to assemble a reinforcing main material 10. And another reinforcing main material is assembled in the same way at the upper position adjacent to the reinforcing main material 10, at the periphery of the existing column. Two connecting members 20 are arranged at the joint of both reinforcing main materials and joined by a connection part. The above processes are repeated by required times to assemble a reinforcing metal tool 1 for an existing column. A filler is charged between the reinforcing metal tool and the existing column to fill the space between them. In this way, the reinforcing work of the existing column is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar reinforcing method and a pillar metal fitting used for the reinforcing method. More specifically, the present invention relates to a highway or railway elevated line constructed by the RC or SRC method. The present invention relates to a method for reinforcing an existing column that can easily reinforce a column such as a bridge, and a reinforcing metal fitting suitably used for the method.

[0002]

2. Description of the Related Art In recent years,
Pillars on expressways, elevated lines of railways, bridges, etc. are deteriorated, and it is demanded to rebuild or reinforce such deteriorated pillars. This tendency is further increased by the Great Hanshin Earthquake. .

However, there is a problem that the rebuilding of the pillar cannot be carried out easily because it interrupts the traffic for a long period of time.

For this reason, there has been a demand for a column reinforcing method for efficiently reinforcing the columns by a simple method. Reinforcement for easily and efficiently reinforcing those columns whose outer surface is concrete. At present, the construction method has not been proposed yet.

Therefore, it is an object of the present invention to provide RC or SRC.
Provided is a method for reinforcing an existing column that can easily and efficiently reinforce a column such as an elevated line of a highway or a railroad, a bridge, etc. constructed by the method, and a column reinforcing metal fitting suitably used for the method. Especially.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that after covering the periphery of a column with a reinforcing metal member, a filler is used between the column and the reinforcing metal member. It was found that the above object can be achieved by filling.

The present invention has been made on the basis of the above-mentioned findings, and the circumference of the pillar is covered with a reinforcing metal fitting at a predetermined interval from the pillar, and then the space is filled between the outer surface of the pillar and the reinforcing metal fitting. It is intended to provide a method for reinforcing existing columns, which is characterized by injecting an agent.

Further, the present invention is a pillar reinforcing metal fitting used in the above-described existing pillar reinforcing method, comprising a plurality of main reinforcing members which cover the circumference of the pillar and are continuously provided in the vertical direction of the pillar.
A reinforcing member for a pillar, comprising: a connecting member provided so as to cover a joint between the reinforcing main members.

Further, according to the present invention, the reinforcing main material comprises a plurality of covering materials and a connecting member for connecting and fixing the covering materials to each other. Is provided, and the connecting member provides a reinforcing metal member for the pillar, which is adapted to hold and fix the connecting portions abutted against each other.

Further, it is preferable that the connecting member has a substantially U-shaped cross-sectional shape, the connecting portion is sandwiched by both side portions, and the open end portion overlaps with the covering material.

Further, it is preferable that the connecting member further has a spacer having a substantially U-shaped cross-section and reinforcing the holding and fixing of both side portions and the connecting portion.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the existing pillar reinforcing method and the reinforcing metal fitting of the present invention will be described in more detail with reference to the drawings.

Here, FIG. 1 is an exploded perspective view showing an embodiment of a reinforcing main material in a reinforcing metal member for a pillar of the present invention, which is preferably used in a method for reinforcing an existing pillar of the present invention, and FIG. 1
3A is a perspective view showing a covering material of the reinforcing main material of FIG. 3, and FIG. 3A is a perspective view showing a connecting member of the reinforcing main material shown in FIG.
3B is a cross-sectional view of the connecting member shown in FIG. 3A, FIG. 4 is an exploded perspective view showing a state in which the reinforcing main material shown in FIG. 1 is attached to a column, and FIG. 5 is a connection of the reinforcing metal fitting of the present invention. FIG. 6 is an exploded perspective view showing one form of a member, and FIG. 6 is formed by installing the reinforcing main material shown in FIG. 1 and the connecting member shown in FIG. 3 (the joint between the reinforcing main materials shown in FIG. 4). 8 is a perspective view showing an embodiment of the reinforcing metal fitting of the present invention in which the connecting member shown in FIG. 3 is attached), FIG. 7 is a sectional view taken along line VV of FIG.
FIG. 9 is a partially enlarged view showing a joint between the covering material and the connecting member of FIG. 7, FIG. 9 is a partially enlarged view of a VI-VI cross section of FIG. 6, and FIG. FIG. 9 is a view similar to FIG. 8 when the connection member of FIG. 8 is used, and FIG. 11 is a view similar to FIG. 8 when a connection member of another form is used.

First, an embodiment of the pillar reinforcing metal fitting of the present invention used in the existing pillar reinforcing method of the present invention will be described.

As shown in FIG. 1, the pillar-reinforcing metal fitting 1 of the present invention is a pillar-reinforcing metal fitting for use in the existing pillar-reinforcing method of the present invention, which will be described later. It is composed of a plurality of reinforcing main members 10 continuously provided in the vertical direction, and a connecting member 20 provided so as to cover a joint between the reinforcing main members 10.

More specifically, the reinforcing main member 10 is composed of 2
It is composed of individual covering materials 11 and a connecting member 12 for connecting and fixing the covering materials 11 to each other.

As shown in FIG. 2, the coating material 11 is formed by bending a flat iron plate at a substantially central portion thereof at a substantially right angle to form a dogleg shape, and further, at both end portions thereof, a predetermined shape. A pair of connecting parts 11a is formed upright at an angle to stand outward. The connecting portion 11a does not have both corners and is shorter than the width of the covering material body 11b. Further, the connecting portion 11a is provided with four bolt holes 11c corresponding to each other between the covering materials 11a. Has been.

As shown in FIGS. 3a and 3b, the connecting member 12 has a substantially U-shaped cross section, and the open end 12b has a predetermined angle outward (90 degrees in the illustrated form).
The connecting portion 1 of the covering material 11 which is spread and abutted against each other
1a is sandwiched between the left and right side portions 12a of the connecting member 12,
In addition, by covering the portion of the covering material body 11b adjacent to the connecting portion 11a with the open end portion 12b of the connecting member 12, the two covering materials 11 are sandwiched and fixed. The connecting member 12 is provided with four bolt holes 12c corresponding to the bolt holes 11c.
The covering material 11 is fixed by the connecting member 12 and the reinforcing main material 10 is formed by penetrating the bolts 1c and 12c with the nuts 14 and fastening them with the nuts 14.

Further, as shown in FIG. 10, a connecting member 112 having another form may be used. The connecting member 112 has a substantially U-shaped cross-section, and the open end 112a overlaps the coating material 11 abutted against each other, and the connecting portion 11a of the coating material 11 is formed.
Is sandwiched between both side portions 112a of the connecting member 112, and the space between the connecting portion 11a and both side portions 112a is covered with a spacer 112d so as to be in close contact, so that the two covering materials 11 are sandwiched and fixed. The connecting member 112 and the spacer 112d are provided with four bolt holes 112c and 112d 'corresponding to the bolt holes 11c at positions closer to the open end 112a. When the bolt 13 is passed through the bolt holes 11c, 112c and 112d 'and fastened with the nut 14, the covering material 11 is connected to the connecting member 112.
And the reinforcing main material 10 is formed. At this time, since the connecting portion is clamped and fixed at a position closer to the pillar, stronger strength against pressure from above can be given to the pillar.

Further, another form of the connecting member 212 is shown in FIG.
It is shown in FIG. The connecting member 212 has a substantially U-shaped cross-section, and the open end 212b extends outward by a predetermined angle (90 degrees in the illustrated embodiment), and the connecting portion 11a of the covering material 11 abutted against each other. The left and right side portions 2 of the connecting member 212
12a and the connecting portion 11 of the covering material body 11b
The portion adjacent to a is the open end portion 212a of the connecting member 212.
Cover with. Further, insert a spacer 212d between the connecting member 212 and the bolt 13 and the nut 14,
It is designed to tightly fix these. Also in this case, the connecting member 2 corresponding to the bolt hole 11c of the covering material 11
The bolt holes 212c of 12 and the bolt holes 212d ′ of the spacer 212d are formed at positions closer to the open end portion 212a of the connecting member 212. The bolt hole 11
Insert bolt 13 into c, 212c and 212d ',
By fastening with the nut 14, the covering material 11 is fixed by the connecting member 212, and the reinforcing main material 10 is formed. As in the embodiment described with reference to FIG. 10, since the clamping and fixing of the connecting portion is performed at a position closer to the column, it is possible to give the column stronger strength against pressure from above.

The reinforcing main material 10 formed as described above is
As shown in FIG. 4, a plurality of (four in the present embodiment) are continuously provided in the vertical direction of the column (in the long axis direction of the column in the present embodiment).

Further, as shown in FIG. 5, the connecting member 20 is formed by bending a strip-shaped iron plate at a substantially central portion thereof at a substantially right angle to form a dogleg shape, and further, at both ends thereof. A pair of connecting portions 21 are formed so as to be erected outwardly at a predetermined angle. The connecting portion 21 is provided with two bolt holes 22 corresponding to each other between the connecting members.

Then, as shown in FIG. 6, the connecting member 20 is installed at the joint 10a (see FIG. 4) formed by connecting the reinforcing main members 10 in series, and the bolts 23 are inserted into the bolt holes 22. The reinforcing metal fitting 1 of the present embodiment is formed by fastening with the nut 24. Here, the connecting portion 21 of the connecting member 20 has the covering member 11
Are connected in the gaps between the connecting portions 11a.

Since the reinforcing metal fitting of this embodiment is constructed as described above, it is not necessary to perform a special operation such as welding by simply installing the covering material and the connecting member and fastening them with bolts and nuts. Further, it is possible to assemble and install at an arbitrary place by a simple operation without the need to install special equipment.

Next, one form of the existing column reinforcing method of the present invention will be described with reference to FIGS. In addition, although the connecting member 12 of the embodiment shown in FIG. 3 will be described as the connecting member, the connecting member 112 of another preferred embodiment.
Since and 212 can be used in the same reinforcing method, the description thereof will be omitted.

Here, FIG. 7 is a sectional view taken along line VV of FIG. 6, FIG. 8 is a partially enlarged view showing a combined state of the covering material and the connecting material of FIG. 7, and FIG. FIG. 7 is a partially enlarged view of a VI-VI cross section of FIG. 6.

The existing pillar reinforcement method of this embodiment is the same as the existing pillar 30.
By surrounding the periphery of the column 30 with the above-described reinforcing metal fitting 1 of the present invention at a predetermined interval, and then injecting a filler 40 between the outer surface of the column 30 and the reinforcing metal fitting 1. can do.

More specifically, two coated main members 11 are installed around the existing column 30 with a predetermined space between them, and a connecting member 12 is provided.
Is covered on the connecting portion 11a of the covering material 11, and the bolt 13 is fitted into the corresponding bolt hole and tightened by bolts to assemble the reinforcing main material 10 (see FIG. 8). Next, another reinforcing main material 10 is assembled around the existing pillar 30 adjacent to the upper side of the assembled reinforcing main material 10 in the same manner as described above. The seam 1 of the two sets of the reinforcing main members 10 thus assembled
0a is covered with two connecting members 20 and bolted at the connecting portion 21.

The above steps are repeated a desired number of times according to the height of the existing pillars, and the reinforcing metal fittings 1 are installed around the existing pillars 30 with a space between them for a predetermined distance. At this time, an opening exists at the top between the reinforcing metal fitting 1 and the existing pillar 30. A filler 40 such as mortar is injected through the opening to completely fill the space between the reinforcing metal fitting 1 and the existing column 30 to complete the reinforcement against the axial force applied to the existing column. As a final finish, the surface of the reinforcing metal fitting can be painted for rust prevention and beautification.

The predetermined distance between the reinforcing metal member and the existing pillar is arbitrary, but in the illustrated embodiment, it is about 5 mm.
0 mm.

As the filler, mortar and the like can be preferably mentioned.

The method of filling the above-mentioned filler is the same as the method of filling ordinary mortar and the like.

The present invention is not limited to the embodiments shown in FIGS. 1 to 10 and various modifications can be made without departing from the spirit of the present invention. For example, the shapes of the covering material and the connecting member are arbitrary according to the shape of the column, and may be arcuate or the like. Also, the number of these is not limited to two, and may be three or more.

[0034]

According to the existing column reinforcing method of the present invention, R
It is possible to easily and efficiently reinforce existing columns such as highways, elevated lines of railways, bridges, etc. constructed by the C or SRC method.

Further, the pillar reinforcing metal fitting of the present invention is preferably used in the existing pillar reinforcing method of the present invention described above, and it is not necessary to perform a special operation such as welding, and further special equipment is required. It is possible to assemble and install at any place by a simple operation without the need to provide.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one form of a reinforcing main material in a reinforcing metal member for a pillar according to the present invention, which is preferably used in a method for reinforcing a pillar according to the present invention.

FIG. 2 is a perspective view showing a covering material for the reinforcing main material shown in FIG.

3a is a perspective view showing a connecting member of the reinforcing main member shown in FIG. 1, and FIG. 3b is a sectional view of the connecting member shown in FIG. 3a.

FIG. 4 is an exploded perspective view showing a state in which the reinforcing main material shown in FIG. 1 is attached to an existing column.

FIG. 5 is an exploded perspective view showing one form of a connecting member in the reinforcing metal fitting of the present invention.

6 is formed by installing the reinforcing main member shown in FIG. 1 and the connecting member shown in FIG. 5 (the connecting member shown in FIG. 3 at the joint between the reinforcing main members shown in FIG. 4). It is a perspective view which shows one form of the reinforcement metal fittings of this invention (attached).

7 is a cross-sectional view taken along line VV of FIG.

FIG. 8 is a partially enlarged view showing a joint portion between the covering material and the connecting member of FIG. 7.

FIG. 9 is a partially enlarged view of a VI-VI cross section of FIG. 6.

FIG. 10 is a partially enlarged view showing a joint portion between a covering member and a connecting member when another connecting member of another form is used.

FIG. 11 is a partially enlarged view showing a joint portion between a covering member and a connecting member when another connecting member of another form is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcing metal fitting 10 Reinforcement main material 20 Connecting member 11 Covering material 12, 112, 212 Connecting member 11a Connecting part 11b Covering material main body 11c Bolt hole 12a, 112a, 212a Both sides 12b, 112b, 212b Opening end 12c, 112c, 212c Bolt hole 112d, 212d Spacer 21 Connecting part 22 Bolt hole

Claims (5)

[Claims] 1. An existing pillar, characterized in that the circumference of the pillar is covered with a reinforcing metal fitting at a predetermined distance from the pillar, and then a filler is injected between the outer surface of the pillar and the reinforcing metal fitting. Reinforcement method. 2. A reinforcing metal member for a pillar used in the existing pillar reinforcing method according to claim 1, wherein a plurality of reinforcing main members are provided to cover the circumference of the pillar and to be continuously provided in a vertical direction of the pillar. And a connecting member (2
0) and a pillar reinforcing metal fitting. 3. The reinforcing main material (10) comprises a plurality of covering materials (11) and connecting members (12, 112, 212) for connecting and fixing the covering materials to each other. ), The both ends are erected and the connecting part (1
1a) is formed, and the connecting members (12, 112, 212) are adapted to hold and fix the connecting portions (11a) that are in contact with each other. Reinforcement fittings for the pillars described. 4. The connecting member (12, 112, 212).
Has a substantially U-shaped cross-sectional shape, and both side portions (12a, 1
12a, 212a) sandwich the connecting portion (11a),
4. The pillar reinforcing metal fitting according to claim 3, wherein the open end portions (12b, 112b, 212b) overlap the covering material (11). 5. The connecting member (12, 112, 212).
Has a substantially U-shaped cross-sectional shape, and both side portions (12a, 1
The column reinforcing metal fitting according to claim 3 or 4, further comprising spacers (112d, 212d) that reinforce the clamping and fixing of the connecting portion (11a) and the connecting portion (11a).