JPH09137413A - Reinforcing method and structure of columnar building and plastic board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reinforce a columnar structure by a method wherein a plurality of plastic boards are connected through connecting sections so as to surround the periphery of the columnar structure, each plastic board is held and fixed, a resin is injected among the columnar structure and the plastic boards, and the connecting sections are fused by energizing heaters buried in the connecting sections. SOLUTION: Plastic boards 4, 5 are held and fastened to the outer circumference of a columnar structure 1 consisting of concrete 2 and reinforcements 3 through connecting sections 6. The connecting sections 6 are composed of projecting sections 4a and dovetail grooves 5a, and heaters 7, 8 are buried in the connecting sections 6. Voids 9 among the columnar structure 1 and each board 4, 5 are filled with a multen epoxy resin 10, and holding plates 11, 12 are disposed on the outsides of the plastic boards 5 through holding shafts 13, 14. The connecting sections 6 are fused by energizing the heaters 7, 8. Accordingly, the columnar structure solidified and reinforced by the plastic boards and the resin can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and structure for reinforcing a pillar structure and a plastic plate, and more particularly to a method for easily reinforcing a pillar structure which is a pier of a highway, a railroad or the like with a plastic plate and a resin. Regarding new improvements.

[0002]

2. Description of the Related Art Conventionally, as a method of reinforcing a columnar building of this type which has been used conventionally, the columnar building is surrounded by an iron plate and mortar or resin is injected between the columnar structure and the columnar building.

[0003]

Since the conventional reinforcing method is configured as described above, there are the following problems. That is, the work of bending and assembling the iron plate in accordance with the shape of the columnar building is required, and since the weight is heavy during assembly, a crane must be used, and further leakage during resin injection is prevented. Therefore, it is necessary to seal the connecting portion of each iron plate, and when the height is high, the work is extremely difficult.

The present invention has been made to solve the above problems, and in particular, a columnar structure which is a pier of a highway, a railroad, etc. is easily reinforced with a plastic plate and resin. An object of the present invention is to provide a reinforcing method and structure of a building and a plastic plate.

[0005]

According to the reinforcing method of a pillar structure according to the present invention, a plurality of plastic plates are connected via a connecting portion so as to surround the circumference of the pillar structure, and the respective plastic plates are held between them. Is fixed, the resin is injected between the pillar-shaped structure and the plastic plate, and the connection part is energized to the heater embedded in the connection part.

More specifically, the pillar-shaped structure is quadrangular, and the plastic plate is arranged in a quadrangular shape.

More specifically, each of the plastic plates is clamped by a frame for fastening.

A reinforcing structure for a columnar building according to the present invention comprises a plurality of plastic plates provided around the columnar structure through a plurality of connecting portions, a dovetail groove for forming each of the connecting portions, and the dovetails. It is a structure including a protrusion fitted into the groove, a heater provided in the connecting portion, and a resin filled between the plastic plates and the columnar building.

More specifically, each of the plastic plates has a structure in which the respective connecting portions are fused by heating of the heater.

The plastic plate according to the present invention has a plate-like shape as a whole, has a dovetail groove, and has a heater near the dovetail groove.

More specifically, the configuration is such that the whole is plate-shaped, has a protrusion, and has a heater in the protrusion.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a method and structure for reinforcing a pillar structure and a plastic plate according to the present invention will be described in detail below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a columnar building composed of bridge piers such as highways and railways, and the columnar building 1 is composed of concrete 2 and reinforcing bars 3. A plurality of first and second plastic plates 4 and 5 are arranged in the shape of a quadrangular cylinder via a connecting portion 6 at the outer peripheral position of the columnar building 1 so as to surround it. Is composed of projections 4a formed on both sides of the first plastic plate 4 and dovetail grooves 5a formed on both sides of the second plastic plate 5, and a heater 7 such as a rechrome wire is formed in the projections 4a. And a heater 8 near the dovetail groove 5a.

The columnar building 1 and each plastic plate 4,
A molten epoxy resin 10 is filled in a cylindrical space 9 formed between the second plastic plate 5 and a pair of compression plates 11 and 12 on the outside of each second plastic plate 5. It is arranged via a plurality of compression shafts 13 and 14, and each compression shaft 13 and 1
4, washer 15, spring 16 and nut 17
Each of the compression plates 11, 12 is compressed by. Therefore,
The clamping plates 4 and 5, the clamping shafts 13 and 14, the spring 16 and the nut 17 compose a frame body 20 for clamping the plastic plates 4 and 5.

Next, the operation will be described. First, as shown in FIG. 1, when the heaters 7 and 8 of the plastic plates 4 and 5 are energized in a state where the plastic plates 4 and 5 and the frame body 20 are assembled, the protrusions 7 are melted. The protrusion 4a expands and is securely joined in the dovetail groove 5a and melted into one body. That is, the respective plastic plates 4 and 5 are firmly fixed by melting the respective projections 4a absorbed by the dovetail groove 5a and integrating them by heat fusion (shown in FIG. 2). Therefore, by melting the protrusion 4a in the dovetail groove 5a, the dovetail groove 5a and the protrusion 4a are melted.
Bind together in such a way that they do not come out. Resin 1 in the above state
After the resin 10 and the connecting portion 6 are completely solidified while being filled with 0, the nut 17 is loosened and the compression plates 11 and 12 are loosened.
By removing, the columnar building 1 can be obtained which is solidified and reinforced by the plastic plates 4 and 5 and the resin 10. Note that the structure of each of the connecting portions 6 described above is an example, and a groove shape without a taper may be used.
Further, is preferable as the material of this plastic plate. Also, the shape of the plastic plate is not limited to a cylinder,
It can also be used with a cylinder or the like.

[0015]

Since the present invention is configured as described above, the following effects can be obtained. That is,
Since a plurality of plastic plates are used, it can be easily transported to the site, and can be easily assembled even if the site is small, and it can be easily assembled without using a crane or the like and can be easily heat-sealed. Further, even a columnar structure having a considerable height (for example, 7 m) can be easily assembled with four plastic plates.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a reinforcing structure of a columnar building according to the present invention.

FIG. 2 is a configuration diagram showing a state in which each connection portion of FIG. 1 is heat-sealed.

[Explanation of symbols]

 1 columnar structure 4,5 plastic plate 4a dovetail groove 5a projecting part 6 connecting part 7,8 heater 10 resin

Claims (7)

[Claims] 1. A plurality of plastic plates (4,5) are connected to each other through a connecting portion (6) so as to surround the columnar building (1), and the plastic plates (4,5) are held between them. Then, the resin (10) was injected between the pillar-shaped building (1) and the plastic plate (4,5), and the connecting portion (6) was embedded in the connecting portion (6). A method for reinforcing a columnar structure, characterized in that the heaters (7, 8) are fused by being energized. 2. The method for reinforcing a columnar structure according to claim 1, wherein the columnar structure (1) is quadrangular, and the plastic plates (4,5) are arranged in a square shape. 3. The method for reinforcing a columnar structure according to claim 1, wherein each of the plastic plates (4,5) is clamped by a fastening frame (20). 4. A plurality of connecting parts (6) around the pillar structure (1).
A plurality of plastic plates (4, 5) provided via the dovetail groove (5a) for forming each of the connection parts (6) and a protrusion (4a) fitted in the dovetail groove (5a). A heater (7, 8) provided in the connection part (6), and a resin (10) filled between the plastic plates (4,5) and the columnar building (1). Reinforcement structure of columnar structure characterized by having. 5. The plastic plate (4, 5) according to claim 4, characterized in that the connection portion (6) is fused by heating of the heater (7, 8). Reinforcement structure of columnar structures. 6. A plastic plate having a plate shape as a whole and a dovetail groove (5a), and a heater (8) near the dovetail groove (5a). 7. A plastic plate having a plate-like shape as a whole and having a protrusion (4a), and a heater (7) in the protrusion (4a).