JP5350613B2 - Structure reinforcement device and reinforcement method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a construction method for reinforcing a structure, which facilitate execution management, which can ensure construction quality commensurate with shear reinforcement strength, and which are excellent in workability and advantageous on the cost front. <P>SOLUTION: The device 2 for reinforcing an existing structure such as an existing column comprises respective reinforcing members 21 which are split into a plurality of parts in the circumferential direction of the structure, and a ring member 22 for connecting the reinforcing members 21 adjoining each other in the circumferential direction of the structure 1. Each of the reinforcing members 21 is provided with a central portion 211 which is provided along an outer peripheral portion of the structure 1, and connecting ends 212 which are provided at both the ends of the central portion 211 in such a manner as to cross the circumferential direction of the structure 1, respectively. The connecting end 212 of each of the adjacent reinforcing members 21 is inserted into the ring member 22. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a structure reinforcing device and a reinforcing method.

Conventionally, in order to prevent shear failure of structures such as existing pillars and beams, concrete was struck repeatedly, steel sheets or resin sheet members were provided on the outer periphery of the structure, or formed in a spiral shape Various reinforcement methods such as winding steel bars around the structure are used on site.
Moreover, the construction method which divides | segments bar steel into appropriate length and screws this divided | segmented bar steel through a metal fitting is proposed (for example, patent document 1). Specifically, the reinforcing device used in Patent Document 1 includes a steel bar having male threads formed at both ends, a tightening member having a nut, and a corner piece that connects the ends of the steel bar to each other. The steel bar in a state where force is applied is fixed to the corner piece with a nut, thereby compressing and reinforcing the column.

JP 2000-034842 A

The above-described method of increasing the concrete and the method of providing a steel plate have strength problems such as an increase in the burden on the foundation due to an increase in the weight of the structure and a reduction in the effective area due to an enlarged cross section. In addition, when providing a steel plate in a part of pillar, in order to fix a steel plate, it is necessary to form many holes in a pillar, and there exists a possibility that a structure may be damaged by such drilling construction.
In addition to the problem of strength, the method of providing a steel plate also has workability problems such as requiring heavy machinery for handling the steel plate and welding.

Furthermore, the method of providing a steel plate or sheet member or the method of winding a spiral steel bar has a problem that it is difficult to reinforce when the structure is provided with projections such as walls. In the case of a construction method in which a sheet member is provided, there is a concern that the organic solvent contained in the sheet member may flow out.
Here, even when protrusions such as walls are provided on the existing structure, reinforcement work can be performed by using a special reinforcing device as in Patent Document 1, but in the method of Patent Document 1, The torque management when screwing the steel bar through the corner piece is complicated, and construction requires an electric or manual torque wrench, or a hydraulic jack for directly pulling the steel bar, which requires a large amount of work. There is a problem. Further, since special hardware such as a corner piece is required, the cost increases.

  Here, in the structure reinforcing apparatus and the reinforcing method, there has been a strong demand for simplifying the structure and construction. In this respect, the reinforcing device and the reinforcing method for screwing as described above are disadvantageous.

  An object of the present invention is to provide a reinforcing device and a reinforcing method for a structural body that can be easily managed and can ensure the quality of construction, are excellent in workability, and are advantageous in terms of cost.

The structure reinforcing device of the present invention includes a ring that connects a plurality of reinforcing members made of steel bars in the circumferential direction of an existing structure having an axial direction and the reinforcing members adjacent in the circumferential direction of the structure. and a member constituting the shear reinforcement, each said reinforcing member has a central portion provided along the outer periphery of the structure, in the axial direction of the both ends structure in the circumferential direction of the central portion A connecting end portion provided along the connecting member, and each connecting end portion of the adjacent reinforcing member is inserted through the ring member.

According to this invention, the reinforcing member and the ring member are integrated by passing the connecting ends of the reinforcing members through the ring member, and a closed reinforcing bar surrounding the outer periphery of the structure is formed. That is, the reinforcing device according to the present invention functions as a shear reinforcing bar.
In the present invention as described above, construction management can be easily performed simply by confirming that the reinforcing member passes through the ring member, thereby ensuring construction quality commensurate with the shear reinforcement strength. That is, it is not related to the complexity of torque management required when the reinforcing device is assembled by screwing.
In addition, since the reinforcing member is divided and formed in the circumferential direction of the structure, it is easy to install even when there are protrusions in the structure, and the weight of the reinforcing member is not so large due to the divided formation, Heavy equipment can be dispensed with. Furthermore, each reinforcing member can be easily connected by simply passing the reinforcing member through the ring member, and a special tool is not required for the construction, so that the workability is excellent.
In summary, according to the present invention, it is possible to ensure the ease of construction.

Further, since the ring member and the reinforcing member are assembled and integrated, dry construction without mortar spraying or concrete placement is possible, thereby shortening the construction period. In addition, you may perform mortar spraying or concrete placement, and in this case, a ring member and a reinforcement member can be integrated more firmly.
And in the present invention, unlike the conventional construction method in which concrete is beaten, problems such as a decrease in effective area due to an enlarged cross section and an increase in burden on the foundation due to an increase in weight do not occur.
Furthermore, since there is no need to drill holes in the structure, the structure is not damaged.
In addition, the connecting end portion can be fit along the outer peripheral portion of the structure and can be constructed well.

Here, a steel bar is used as the reinforcing member. The connection end of the reinforcing member may have any shape that can be inserted into the ring member. For example, the cross-sectional shape of the connecting end portion of the reinforcing member may be a circle, an ellipse, a polygon, or the like. Moreover, what cut | disconnected the steel pipe to appropriate length, what punched the steel plate, the thing which bent the rod-shaped member and closed both ends, etc. can be used for a ring member. That is, the reinforcing device of the present invention does not require special hardware, which is advantageous in terms of cost.
And a structure is a pillar, a beam, etc., and there are two or more reinforcing members in these circumferential directions. Therefore, there are also two or more ring members that connect the connecting end portions of the reinforcing members. Thus, even if there are two or more locations where the reinforcing members are connected to each other, since the construction management is easy as described above, the effect of ensuring the construction quality can be greatly increased.

  In the structure reinforcing device of the present invention, it is preferable that an inner peripheral shape of the ring member is substantially circular, and a cross-sectional shape of the connection end portion is substantially circular.

According to this invention, since the connecting end portion follows the shape of the inner peripheral surface of the ring member, it is easy to insert the connecting end portion even if the inner diameter of the ring member is reduced, and the connecting end portion can be restrained well in the ring. .
The substantially circular shape includes an ellipse and an irregular shape.

In the reinforcing device for a structure according to the present invention, it is preferable that the connecting end portion is formed by bending the reinforcing member at both ends of the central portion.
According to this invention, the connecting end can be easily formed by bending.
Further, since the connecting end can be formed by the same processing apparatus as that for bending the reinforcing member along the outer peripheral shape of the structure, the operation becomes efficient.

  In the reinforcing device for a structure according to the present invention, it is preferable that a wedge inserted between the connecting end portions inserted through the ring member is provided.

  According to this invention, since the play between the ring member and the connecting end portion is eliminated by the wedge, the ring member and the reinforcing member can be more firmly integrated. This makes it possible to integrate the ring member and the reinforcing member with the same connection strength without arranging concrete or mortar.

  A plurality of reinforcing devices for a structural body according to the present invention are provided at predetermined installation intervals in the axial direction of the structural body, and at least one connecting end portion of each of the reinforcing devices is dimensioned according to the installation interval. Preferably it is.

  According to the present invention, in each of the plurality of reinforcing devices, since at least one connecting end is dimensioned according to the installation interval, the structure is determined based on the installation position of the connecting end where the dimension is determined. By sequentially installing the reinforcing devices in the axial direction of the body, the reinforcing members can be installed at predetermined intervals. That is, it is possible to have a function of holding the installation interval between the reinforcing devices at the connecting end portion where the dimension is determined.

A structural body reinforcing device of the present invention includes a reinforcing member made of a plurality of steel rods provided on the outer periphery of an existing rectangular cross-sectional structure, and a ring member that connects two or more adjacent reinforcing members. configure the shear reinforcement Te, each of said reinforcing member has a central portion provided along the outer periphery of said structure, connecting end arranged along the axial direction of the structure with respect to the ends of the central portion The connection end of one reinforcement member and the connection end of the other reinforcement member of the pair of reinforcement members adjacent to each other at least among the plurality of reinforcement members correspond to the corners of the structure. provided in a position, wherein the ring member, each of the connecting ends of the adjacent reinforcing member, characterized in that it is inserted.

  According to the present invention, it is possible to reinforce the structure by connecting two, three, or four or more reinforcing members using one ring member as a joint. In the present invention, as in the case of the above-described invention, construction management is easy, thereby ensuring construction quality. Further, like the above-described invention, the workability is good, the structure is not damaged, and the cost is advantageous. In addition, the effect that construction management is easy and construction quality can be ensured can be remarkable, so that there are many locations which connect reinforcement members.

The structure reinforcing device of the present invention includes a central portion wound in the circumferential direction of an existing structural body having an axial direction, and connecting end portions that are provided at both ends of the central portion in the circumferential direction and face each other. a reinforcing member made of a steel rod with the door, said and a ring member for connecting the connecting end portions constitute the shear reinforcement, each connection end is provided along the axial direction of the structure The ring member is inserted through the ring member.

According to this invention, the reinforcing member and the ring member are integrated by passing the connecting end portions of the reinforcing member through the ring member, and a closed reinforcing bar surrounding the outer periphery of the structure is formed. That is, the reinforcing device according to the present invention functions as a shear reinforcing bar.
In such this invention, construction management can be easily performed only by confirming that the reinforcing member passes through the ring member, and thereby construction quality can be ensured. In addition, it is only necessary to pass the reinforcing member through the ring member, and since a special tool is not required for the construction, the workability is excellent. That is, according to the present invention, the ease of construction can be ensured.
In addition, no special hardware is required for the reinforcing member and the ring member, which is advantageous in terms of cost.
Furthermore, there are no problems such as a decrease in effective area due to cross-section expansion and an increase in the burden on the foundation due to an increase in weight, and damage to the structure due to drilling work, as in the conventional method of adding concrete.

Retrofit for structure of the present invention is a structure method of reinforcement with reinforcing device configured as described above, the connecting end portions adjacent the plurality are reinforcing members in the circumferential direction to the ring member A reinforcing member connecting step for insertion is provided.

According to this invention, the reinforcing member and the ring member are integrated by performing the reinforcing member connecting step of passing the connecting ends of the reinforcing members through the ring member, and the reinforcing member and the ring member are integrated into the structure. It becomes possible to function as a shear reinforcement.
In such this invention, construction management can be easily performed only by confirming that the reinforcing member passes through the ring member, and thereby construction quality can be ensured.
In addition, as described above, even if there are protrusions or the like in the structure, it is easy to construct, and no heavy machinery is required and no special tool is required, so that workability is excellent.
That is, according to the present invention, the ease of construction can be ensured.

In addition, no special hardware is required for the reinforcing member and the ring member, which is advantageous in terms of cost.
Furthermore, there are no problems such as a decrease in effective area due to cross-section expansion and an increase in the burden on the foundation due to an increase in weight, and damage to the structure due to drilling work, as in the conventional method of adding concrete.

  In the reinforcing method for a structure according to the present invention, it is preferable to include a curing treatment step in which a post-curing material is provided and cured in a region including at least the inside of the ring member on the outer periphery of the structure.

Here, the post-curing material is, for example, mortar, concrete, resin or the like.
According to this invention, the ring member and the reinforcing member can be more firmly integrated by curing the post-curing material.

The structure reinforcing method according to the present invention is a method of reinforcing a structure using the reinforcing device having the above-described configuration, and two or more adjacent connection end portions of a plurality of reinforcing members provided on the outer periphery of the structure are adjacent to each other. the characterized in that it comprises a reinforcing member connecting step of inserting the ring member.

  According to the present invention, it is possible to reinforce the structure by connecting two, three, or four or more reinforcing members using one ring member as a joint. In the present invention, as in the case of the above-described invention, construction management is easy, thereby ensuring construction quality. Further, like the above-described invention, the workability is good, the structure is not damaged, and the cost is advantageous. In addition, construction management is easy and the effect that construction quality can be ensured can be remarkable, so that there are many locations which connect reinforcement members.

The structure reinforcing method according to the present invention is a method for reinforcing a structure using the reinforcing device having the above-described configuration, and is a connecting end portion of a reinforcing member whose central portion is wound in the circumferential direction of the existing structure. It is provided with the reinforcement member connection process which penetrates each other to the said ring member.

According to this invention, it becomes possible to integrate a reinforcement member and a ring member by implementing a reinforcement member connection process, and to function these reinforcement members and a ring member as a shear reinforcement of a structure.
In such this invention, construction management can be easily performed only by confirming that the reinforcing member passes through the ring member, and thereby construction quality can be ensured. In addition, since no special tools are required, workability is excellent. That is, according to the present invention, the ease of construction can be ensured.
In addition, no special hardware is required for the reinforcing member and the ring member, which is advantageous in terms of cost.
Furthermore, there are no problems such as a decrease in effective area due to cross-section expansion and an increase in the burden on the foundation due to an increase in weight, and damage to the structure due to drilling work, as in the conventional method of adding concrete.

  According to the present invention described above, the construction management is easy and the construction quality commensurate with the shear reinforcement strength can be ensured, so that the ease of construction can be secured. In addition, it has excellent workability and is advantageous in terms of cost.

Embodiments of the present invention will be described below with reference to the drawings. In the description of the second and subsequent embodiments, the same components as those of the first embodiment described below are denoted by the same reference numerals, and description thereof is omitted or simplified.
In addition, although the reinforcement apparatus and reinforcement construction method which reinforce a column are shown below, the said reinforcement apparatus and reinforcement construction method are applicable not only to a pillar but reinforcement of structures, such as a beam.
[First Embodiment]
FIG. 1 shows an existing pillar 1 as a structure according to the first embodiment and a plurality of reinforcing devices 2 provided on the outer periphery of the pillar 1.
Each reinforcing device 2 is installed at a predetermined installation interval H along the axial direction of the pillar 1. In this embodiment, concrete 10 is placed on the outer periphery of the pillar 1.

FIG. 2 shows the reinforcing device 2. The reinforcing device 2 includes four reinforcing members 21 that are divided into four in the circumferential direction of the pillar 1 and a ring member 22 that connects adjacent reinforcing members 21.
Each reinforcing member 21 is a deformed PC steel bar having a substantially circular cross section. Each reinforcing member 21 includes a central portion 211 that is substantially L-shaped in plan view along the outer peripheral portion of the pillar 1. , And connecting end portions 212 and 212 that are bent at substantially right angles in the axial direction of the column 1 from both ends of the central portion 211.
Here, the rising dimension from the center part 211 of each connection end part 212 is a dimension according to the installation interval H (FIG. 1) of each reinforcing device 2.

  The ring member 22 is formed in an annular shape by punching a steel plate, bending a rod-like member, cutting a steel pipe, or the like. Inside the ring member 22, the connecting end portions 212 of the adjacent reinforcing members 21 and 21 are inserted.

With reference to FIG. 3 and FIG. 4, the reinforcement construction method using the reinforcement apparatus 2 of this embodiment is demonstrated.
By bending the overlapping portion A of the reinforcing members 21 and 21 shown in FIG. 3A at a substantially right angle, the connecting end portion 212 is formed as shown in FIG. The connection end 212 may be formed on site or in a factory.
Next, as shown in FIG. 3C, a reinforcing member connecting step of inserting the ring member 22 is performed in a state where the connecting end portions 212 of the reinforcing members 21 and 21 are aligned in the same direction. A heavy machine or the like is not necessary for handling the reinforcing member 21. FIG. 3D shows a state in which each connection end 212 is inserted inside the ring member 22. Construction management in the reinforcement work of the present embodiment is performed by confirming that the reinforcement member 21 passes through the ring member 22.

  3 (A) to 3 (D) are respectively performed at the four connecting portions of the reinforcing members 21, so that the reinforcing members 21 and the ring members 22 are integrated. An enclosing closed reinforcement is formed. That is, the reinforcing device 2 functions as a shear reinforcing bar for the column 1.

Each reinforcing device 2 is sequentially installed in the axial direction of the column 1 at a predetermined installation interval H as shown in FIG. Here, when installing the reinforcing device 2 on the column 1, the height at which the reinforcing member 21 is installed is determined based on the height of the tip of the connecting end 212 of the reinforcing device 2 that has already been installed. Thereby, each reinforcement apparatus 2 can be easily installed, maintaining the installation interval H.
In the present embodiment, the reinforcement work for the pillar 1 is completed by performing a curing process step in which the concrete 10 (FIG. 1) is placed around the reinforcement device 2 and cured.
In each of the above steps, a jig or the like (not shown) that holds the reinforcing member 21 on the outer peripheral portion of the column 1 may be used as appropriate.

According to the above embodiment, the following effects can be obtained.
(1) By simply passing the reinforcing member 21 through the ring member 22, it is possible to easily construct a closed reinforcing bar having the ring member 22 as a joint, and simply confirming that the reinforcing member 21 passes through the ring member 22. Construction management is possible. Thereby, the construction quality commensurate with the shear reinforcement strength can be secured.
That is, the ease of construction can be secured by the reinforcing device 2 and the reinforcing method of the present embodiment.

(2) Since the ring member 22 and the reinforcing member 21 that can be formed from general-purpose members are used instead of special hardware, the cost can be reduced.

(3) Since each reinforcing member 21 is divided and formed in the circumferential direction of the pillar 1, it is easy to perform the construction even when a protrusion or the like is provided on the pillar 1.
In addition, the reinforcing member 21 of the present embodiment is divided into four parts, and even if there are as many as four connection points as described above, the construction management is easy as described above, so that the effect of ensuring quality can be increased.

(4) Unlike conventional methods in which concrete is beaten and steel columns are enclosed, problems such as a decrease in effective area due to cross-section expansion and an increase in burden on the foundation due to an increase in weight do not occur.
Furthermore, regarding the installation of the reinforcing device 2 on the pillar 1, it is only necessary to assemble the ring member 22 and the reinforcing member 21, and the pillar 1 is not damaged because a drilling work on the pillar 1 is unnecessary.

(5) Since the inner peripheral shape of the ring member 22 is circular and the cross-sectional shape of the connecting end 212 is substantially circular, the inner periphery of the ring member 22 is inserted when the connecting end 212 is inserted into the ring member 22. The connecting end 212 follows the surface. For this reason, even if the inner diameter of the ring member 22 is reduced, the connecting end portion 212 can be easily inserted, and the connecting end portion 212 can be favorably restrained in the ring.

(6) Since the connecting end portions 212 and 212 are bent at both ends of the central portion 211, the connecting end portion 212 can be easily formed. In addition, since the connection end can be formed with the same processing apparatus that bends the reinforcing member 21 along the outer peripheral shape of the pillar 1 on site, the reinforcing member connecting step can be performed efficiently.

(7) Since the connecting end portion 212 is along the axial direction of the column 1 and has a size corresponding to the predetermined installation interval H, the connecting end portion 212 of the reinforcing device 2 already installed on the column 1 is used. By sequentially installing the reinforcing devices 2 in the axial direction of the pillar 1 based on the height of the column, the reinforcing members 21 can be easily installed at predetermined intervals.
Further, since the connecting end portion 212 is along the axial direction of the column 1, the entire reinforcing device 2 can be fit and arranged along the outer peripheral portion of the column 1.

(8) By placing the concrete 10 around the reinforcing device 2, the reinforcing member 21 and the ring member 22 can be more firmly integrated.
Here, in the present embodiment, the placement of the concrete 10 may be replaced with a mortar as a post-curing material or a resin arrangement. In this case, the reinforcing member 21 and the ring member 22 are integrated by providing mortar or resin at the connecting portion between the reinforcing member 21 and the ring member 22, and there are substantially the same effects as the concrete placement. In addition, the mortar and the resin may be provided in a region including at least the inside of the ring member 22 on the outer periphery of the pillar 1.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 5 shows an existing pillar 1 as a structure according to the present embodiment. In this embodiment, concrete is not placed on the outer periphery of the pillar 1.

As shown in FIG. 6, the reinforcing device 3 according to the present embodiment has a wedge 31 inserted between the connecting end portions 212 and 212.
In this embodiment, after performing FIG. 3 (A)-(D) similarly to 1st Embodiment, the wedge 31 is driven and inserted between the connection end parts 212 and 212 in the ring member 22. FIG. As a result, there is no backlash inside the ring member 22, and the reinforcing member 21 and the ring member 22 are firmly integrated.

According to this embodiment, in addition to the same effects as described in (1) to (7) of the first embodiment, the following effects can be obtained.
(9) The reinforcing member 21 and the ring member 22 can be more firmly integrated via the wedge 31. As a result, dry construction without concrete placement or the like becomes possible, and the construction period can be shortened.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
FIG. 7 shows the reinforcing device 4 according to this embodiment. This reinforcing device 4 is used when a beam 7 is newly installed on a pillar 1 which is an existing structure, and includes five reinforcing members 41 to 45 which are deformed PC steel bars having a substantially circular cross section, and reinforcing members 41 to 45. The ring-shaped ring members 46-48 which connect adjacent connection edge parts are provided.
Each of the reinforcing members 41 to 45 has a central portion 411 provided along the outer peripheral portion of the column 1 and a connecting end portion 412 formed by bending at an end portion of the central portion 211. One connecting end 412 of the reinforcing member 41 and one connecting end 412 of the reinforcing member 43 are provided at positions corresponding to the corners of the pillar 1.
The connecting end portions 412 of the two reinforcing members 41 and 42 are inserted into the ring member 46, and the connecting end portions 412 of the two reinforcing members 42 and 43 are inserted into the ring member 47.
Further, the connecting end portions 412 of the four reinforcing members 41, 43, 44, 45 are inserted into the ring member 48. FIG. 8 is an enlarged view of a connecting portion by this ring 48 (column 1 and beam 7 are not shown).
In the present embodiment, the procedures of FIGS. 3A to 3D are performed in substantially the same manner as in the first embodiment.

According to this embodiment, the same effect as the first embodiment can be obtained.
In addition, the effect similar to 2nd Embodiment is acquired by inserting a wedge between the connection end parts 412 penetrated by the ring members 46-48.
Further, the reinforcing members 41 to 45 and the ring members 46 to 48 are more firmly integrated by disposing a post-curing material such as mortar, concrete, or resin in an area including the inside of the ring members 46 to 48. it can.

  In the above embodiment, an example in which four connection end portions are inserted through one ring member is shown, but the number of connection end portions of the reinforcing member inserted through the ring member is not limited. For example, the reinforcing device 4 ′ shown in FIG. 9 includes five reinforcing members 41 ′, 42, 43 ′, 44 ′, 45 and four ring members 46, 47, 49, 50, and the existing pillar 1. The new beam 7 'is reinforced. In the configuration of FIG. 9, the connecting end portions 412 of the three reinforcing members 41 ′, 44 ′, and 45 are inserted into one ring member 50. Also in this configuration, the construction method is substantially the same as that of the above embodiment, and substantially the same effect as that of the above embodiment can be obtained.

[Fourth Embodiment]
Although the reinforcing device described above includes the reinforcing member divided in the circumferential direction of the structure, the functions and effects of the present invention can be enjoyed even if the reinforcing member is not divided. FIG. 10 shows the reinforcing device 8 according to the present embodiment. The reinforcing device 8 includes one reinforcing member 81 and one ring member 22. The reinforcing member 81 has a central portion 211 wound in the circumferential direction of an existing structure (not shown), and connecting end portions 212 and 212 that are bent at both ends of the central portion 211 and face each other. . Also in the reinforcing device 8, both ends of the reinforcing member 81 and the ring member 22 are integrated by performing the procedure of FIGS. 3A to 3D in substantially the same manner as in the first embodiment. Therefore, substantially the same effect as that of the first embodiment can be obtained.

[Modification of the present invention]
FIG. 11 shows a reinforcing device 5 according to a modification of the present invention. The reinforcing device 2 (FIG. 2) according to the first embodiment is divided into four parts in the circumferential direction of the pillar 1, but the reinforcing device 5 is divided into two parts in the circumferential direction of the structure body, two reinforcing members 21 and two rings. And a member 22. Thus, in this invention, the division | segmentation number of a reinforcement member is not ask | required. Although illustration is omitted, considering the outer peripheral length of the structure, the presence of protrusions such as walls, etc., such as three or more divisions, how many reinforcement members are divided, and the shape of each reinforcement member, etc. Just decide. In addition, each reinforcement member may be divided | segmented into the non-uniform length instead of equally dividing.

Furthermore, in each said embodiment, although the position where each reinforcement member 21 is connected was the approximate center of the side surface of the pillar 1, the position where an adjacent reinforcement member is connected is not limited to this, For example, the corner of a pillar It is good also as a structure by which reinforcement members are connected by a part.
In addition, the cross-sectional shape of the structure is not particularly limited, such as a circle, an ellipse, or a polygon, and the central portion of the reinforcing member may be a shape along the outer periphery of the structure.

  FIG. 12 shows a reinforcing device 6 according to another modification of the present invention. The connecting end portion 212 of the reinforcing member 21 described above was formed by bending a rod-shaped member, but the reinforcing member of this example was provided at a substantially right angle to the rod-shaped central portion 211 and both ends of the central portion 211. It has the connection end part 612 which is another member. Here, the connecting end portion 612 separate from the central portion 211 is a steel bar, a strip steel, a plate material, or the like. The connecting end portion 612 is connected to the end of the central portion 211 by an appropriate means such as welding, pressing, or screwing. Provided in the department.

  Here, in each of the reinforcing devices 6, the rising dimension (height) of the connecting end portion 612 from the central portion 211 corresponds to the installation interval H of the reinforcing devices 6 at at least one place in the circumferential direction of the column 1. The dimensions are preferred. Thereby, each reinforcement apparatus 6 can be easily installed on the column 1 while maintaining a predetermined installation interval H. It should be noted that at least one of the two connecting end portions 612 inserted through the same ring member 22 may have a height corresponding to the installation interval H.

In the present invention, the shape of the ring member is not limited to a circle but may be an ellipse or a polygon.
The cross-sectional shape of the reinforcing member is not limited.
Furthermore, the direction in which the connecting end portion of the reinforcing member is formed is arbitrary as long as the connecting end portion intersects the central portion of the reinforcing member, for example, so as to stand up out of the plane from the outer peripheral surface of the structure. A connecting end may be formed.

Although the best configuration for carrying out the present invention has been specifically described above, the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications and improvements can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.
The description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which removes a part or all of the limitation is included in the present invention.

The figure which shows the pillar and reinforcement apparatus which concern on 1st Embodiment of this invention. The perspective view of the said reinforcement apparatus. The figure which shows the procedure of a reinforcement member connection process. The figure which shows that each reinforcement apparatus is installed hold | maintaining a predetermined installation space | interval. The figure which shows the pillar and reinforcement apparatus which concern on 2nd Embodiment of this invention. The side view of the said reinforcement apparatus. The figure which shows the reinforcement apparatus which concerns on 3rd Embodiment of this invention. The elements on larger scale of FIG. The figure which shows the reinforcement apparatus which concerns on the modification of 3rd Embodiment. The figure which shows the reinforcement apparatus which concerns on 4th Embodiment of this invention. The figure which shows the reinforcement apparatus which concerns on the modification of this invention. The figure which shows the reinforcement apparatus which concerns on the other modification of this invention.

Explanation of symbols

1 pillar (structure)
2-8 Reinforcing device 10 Concrete (post-curing material)
21 Reinforcing member 22 Ring member 31 Wedges 41 to 45 Reinforcing members 46 to 50 Ring member 81 Reinforcing member 211 Central portion 212 Connection end portion 411 Central portion 412 Connection end portion 612 Connection end portion H Installation interval

Claims (11)

A reinforcing member comprising a steel rod provided in the circumferential direction of an existing structure having an axial direction and a ring member that connects the reinforcing members adjacent in the circumferential direction of the structure constitute a shear reinforcing bar And
Each of the reinforcing members has a central portion provided along the outer peripheral portion of the structure, and connection end portions provided along the axial direction of the structure at both ends of the central portion in the circumferential direction.
The connection member of each said adjacent reinforcement member is penetrated by the said ring member. The reinforcement apparatus of the structure characterized by the above-mentioned. The structure reinforcing device according to claim 1,
The inner peripheral shape of the ring member is substantially circular,
A cross-sectional shape of the connecting end portion is substantially circular. The structure reinforcing device according to claim 1 or 2,
The connecting end portion is formed by bending the reinforcing member at both ends of the central portion. In the reinforcement apparatus of the structure in any one of Claim 1 to 3 ,
A structure reinforcing apparatus comprising a wedge inserted between the connecting end portions inserted through the ring member. In the reinforcement apparatus of the structure in any one of Claim 1 to 4 ,
A plurality of the reinforcing devices are provided at predetermined installation intervals in the axial direction of the structure,
In each of the reinforcing devices, at least one connecting end is dimensioned according to the installation interval. The structural reinforcing device. A reinforcing member composed of a steel bar provided on the outer periphery of an existing structure having a rectangular cross-section and a ring member that connects two or more adjacent reinforcing members together to constitute a shear reinforcement bar ,
Each of the reinforcing members has a central portion provided along the outer peripheral portion of the structure, and a connecting end provided along the axial direction of the structure with respect to an end of the central portion.
The connection end of one reinforcement member and the connection end of the other reinforcement member of at least one pair of reinforcement members adjacent to each other among the plurality of reinforcement members are provided at positions corresponding to the corners of the structure,
The connection member of each said adjacent reinforcement member is penetrated by the said ring member. The reinforcement apparatus of the structure characterized by the above-mentioned. A reinforcing member made of a steel rod having a central portion wound in the circumferential direction of an existing structure having an axial direction, and connecting end portions provided at both ends of the central portion in the circumferential direction and facing each other; , Comprising a ring member for connecting the connecting end portions, and constituting a shear reinforcement ,
Each said connection edge part is provided along the axial direction of the said structure, and is penetrated by the said ring member. The reinforcement apparatus of the structure characterized by the above-mentioned. A method of reinforcing a structure using the structure reinforcing device according to claim 1,
A reinforcing method for a structure, comprising: a reinforcing member connecting step of inserting adjacent connecting end portions of a plurality of reinforcing members provided in the circumferential direction into the ring member. In the reinforcing method for a structure according to claim 8 ,
A reinforcing method for a structure, comprising a curing treatment step in which a post-curing material is provided and cured in a region including at least the inside of the ring member on the outer periphery of the structure. A structure reinforcement method using the structure reinforcement device according to claim 6,
A reinforcing method for reinforcing a structure, comprising: a reinforcing member connecting step of inserting two or more adjacent connecting end portions of reinforcing members provided on the outer periphery of the structure into the ring member. A structure reinforcement method using the structure reinforcement device according to claim 7,
Retrofit for structures, characterized in that it comprises a reinforcing member connecting step for inserting the connecting end portions of the reinforcing member central portion is wound in the circumferential direction of the structure of the existing to the ring member.

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