JP5459661B2 - Seismic reinforcement panel and seismic reinforcement method using the same - Google Patents

Description

  The present invention relates to a seismic reinforcement panel that seismically reinforces a concrete member by winding a steel plate and a seismic reinforcement method using the same.

  As a reinforcement method for seismic reinforcement of reinforced concrete columns and reinforced concrete piers (hereinafter referred to as columnar concrete members), a method of winding a steel plate around the columnar concrete member and filling a grouting material such as mortar in the gap with the steel plate is known. According to such a construction method, by constraining the columnar concrete member with a steel plate, it is possible to increase the toughness in the bending shear property and improve the seismic performance, thereby preventing the columnar concrete member from being collapsed. Become.

  Here, when the horizontal cross section of the columnar concrete member is a rectangular cross section, particularly a wall-shaped cross section with a relatively long longitudinal direction, it is difficult to suppress the bulge in the out-of-plane direction of the steel plate disposed on the long side surface side. Therefore, the structure which mutually connects two steel plates located in a longitudinal side with tension | tensile_strength materials, such as a PC steel bar, for every predetermined space | interval is employ | adopted.

  In the steel sheet winding method using such a tensile material, in order to compensate for the lowering of the restraining action at a position further away from the tensile material installation location, the steel is formed into a semi-cylindrical curve instead of a flat steel plate. There is also adopted a configuration in which a plurality of manufactured segments are connected to each other and connected to each other, and a tensile material is inserted and fixed at the connecting portion (Patent Document 1).

  According to this configuration, the bulge of the columnar concrete member can be supported by the in-plane tensile force of the steel segment even at a position away from the installation location of the tensile material, and thus in a wall-shaped rectangular cross section. Even if it exists, it becomes possible to raise the toughness of a columnar concrete member and to improve a seismic performance.

Japanese Patent No. 3601970 JP 2006-183318 A

  However, in the above-mentioned reinforcement method, there is a problem that there is a concern that the reinforcing bar embedded in the columnar concrete member may be damaged when the hole for inserting the PC steel bar is drilled, and the insertion of the PC steel bar including such a drilling process. Since a process and a connecting process between the PC steel bar and the steel segment are required, there has been a problem that time and cost are required for the seismic reinforcement work.

  In addition, even in the construction method described in Patent Document 1, it is necessary to have a structure capable of transmitting a tensile force to the PC steel bar in the vicinity of both edges of the steel segment. Rigidity is required, and there has been a problem that it is not sufficient to reduce the weight of the steel sheet by making it thinner.

  The present invention has been made in consideration of the above-described circumstances, and is capable of efficiently and rationally performing seismic reinforcement by steel plate winding even for a columnar concrete member having a wall-like cross section having a relatively long longitudinal direction. An object of the present invention is to provide an anti-seismic reinforcement panel and an anti-seismic reinforcement method using the same.

In order to achieve the above object, the seismic reinforcement panel according to the present invention, as described in claim 1, is configured to be wound up so as to surround a columnar concrete member having a wall-like rectangular cross section. The columnar concrete is composed of a reinforcement panel made of pieces and a connection panel that joins adjacent reinforcement panel pieces among the reinforcement panel pieces, and the reinforcement panel is wound around the columnar concrete member. A connection protrusion is formed in the vicinity of the connection edge of the reinforcing panel piece so as to protrude inward toward the peripheral surface of the member, and a connection opening into which the connection protrusion is fitted Formed on the connection panel, the reinforcing panel piece and the connection panel are thickened via connecting means such as screws, screws, bolts, etc. at the place where they are overlapped. A seismic reinforcement panel linked freely the directions, of the reinforcing panel and the connection panel, a reinforcing panel disposed in a lateral side surface of the columnar concrete element, the short-side side surface of the columnar concrete member Reinforcing panel piece comprising a flat plate portion spaced apart from the short side surface so as to face the two sides, and two curved portions respectively extending in a C shape from both side edge portions of the flat plate portion The reinforcing panel and the connection panel arranged on the long side surface side of the columnar concrete member, and the curved portion , the entire horizontal cross section in the joined state is long from one long side edge of the columnar concrete member It is configured to have a convex curved cross section that passes through the center of the side surface and reaches the edge of the other long side surface.

Moreover, the earthquake-proof reinforcement panel which concerns on this invention curves the said reinforcement panel piece arrange | positioned at the longitudinal side surface side of the said columnar concrete member, and the said connection panel, respectively.

Moreover, the earthquake-proof reinforcement panel which concerns on this invention uses the flat panel and the other as a bending board among the said reinforcement panel piece arrange | positioned at the longitudinal side surface side of the said columnar concrete member, and the said connection panel.

Moreover, the seismic reinforcement method using the seismic reinforcement panel according to the present invention is such that the reinforcement panel composed of a plurality of reinforcement panel pieces surrounds the periphery of the columnar concrete member having a wall-like rectangular cross section as described in claim 4. Winding up, joining the reinforcing panel pieces that are adjacent in the horizontal direction among the reinforcing panel pieces through a connecting panel, and injecting and filling grout materials such as mortar and concrete into the gap between the reinforcing panel and the columnar concrete member stand and, with the repeated winding stand of the reinforcing panel caused by bonding of the reinforcing panel pieces together until more by upward desired height performed via the connection panel, winding the reinforcing panel around the columnar concrete member The reinforcing panel piece so as to project inward toward the peripheral surface of the columnar concrete member when A connecting projection formed in the vicinity of the connection edge is fitted into a connection opening formed in the connection panel, and the reinforcing panel piece and the connection panel are screwed, screwed, A seismic reinforcement method for coupling in a thickness direction via a coupling means such as a bolt, wherein the reinforcement panel arranged on the short side surface side of the columnar concrete member of the reinforcement panel and the connection panel is the columnar shape. A flat plate portion spaced apart from the short side surface so as to face the short side surface of the concrete member, and two curves each extending in a C shape from both side edges of the flat plate portion together comprise a reinforcing panel piece comprising a part, the reinforcement panel and the connection panel and the curved portion are disposed in the longitudinal side surface of the columnar concrete element, horizontal overall in their joined state the cross-sectional There are those configured such that the convex curved section extending in the longitudinal side edges of the longitudinal side edges of the other via a longitudinal side middle one of the columnar concrete member.

  The seismic reinforcement method using the seismic reinforcement panel according to the present invention comprises the reinforcement panel wound in advance when the reinforcement panel is repeatedly wound up one layer at a desired height. While locking the lower edge side connection locking portion formed on the lower edge of the reinforcement panel piece constituting the reinforcement panel newly stacked on the upper edge side locking portion provided on the upper edge of the reinforcing panel piece, A watertight agent is applied to or filled in the locking portion.

  As described in the prior art, when a columnar concrete member having a wall-shaped cross section is seismically reinforced with a steel plate hoist, two flat steel plates positioned on the long side are stretched at predetermined intervals such as PC steel bars. In addition, a plurality of the flat steel plates are connected in place of the steel segments formed in a semi-cylindrical shape, and a tensile material is inserted and fixed at the connection location.

  However, since the former reinforcing method requires the entire steel plate and the latter reinforcing method requires the out-of-plane bending rigidity and the out-of-plane shear rigidity at the connecting portion of the steel plates, it is difficult to make the steel plate sufficiently thin.

As a result of conducting research and development focusing on this point, the applicant of the present invention is arranged on the long side surface side of the columnar concrete member among the reinforcing panel and the connection panel , and on the short side surface side. The curved portions of the reinforcing panel pieces are configured such that the entire horizontal cross section in the joined state thereof is a convex curved cross section extending from one long side edge of the columnar concrete member to the other long side edge through the center of the long side. The new knowledge that the swelling of the columnar concrete member can be restrained by the in-plane tensile force of the reinforcing panel and the connection panel is obtained, and the steel plates are not connected with a tensile material such as a PC steel bar. Both of them can not only restrain the deformation of columnar concrete members, but also eliminate the need for out-of-plane bending and shearing rigidity, making it possible to significantly reduce the thickness of the steel sheet. .

  That is, when a columnar concrete member tries to expand due to repeated loading of bending shear or loading of excessive axial force, the reinforcing panel and the connection panel wound around the columnar concrete member pull the bulging in-plane. Restrained by force (hoop tension).

  The columnar concrete member is a concept that encompasses not only a column in a narrow sense but also all members that support the loading load with an axial force. For example, a bridge pier is also included in the columnar concrete member of the present invention.

The curved portion of the reinforcing panel and the connecting panel arranged on the long side surface side of the columnar concrete member and the reinforcing panel piece arranged on the short side surface side has an overall horizontal cross section in the joined state of one long side surface of the columnar concrete member. By forming the convex curved section from the edge to the other longitudinal side edge through the center of the longitudinal side surface, the curved shape of the convex curved section can be changed as long as the internal restraint by the hoop tension described above is possible. The setting method is arbitrary, and includes a polygonal configuration that changes discontinuously, including a case where the curved shape changes smoothly like an arc or an elliptical arc.

  Specifically, the following three configurations or a combination thereof are included in the present invention.

(a) The reinforcing panel piece and the connection panel arranged on the long side surface side of the columnar concrete member are respectively curved and formed.

(b) Of the reinforcing panel pieces and connection panels arranged on the longitudinal side of the columnar concrete member , one is a flat plate and the other is a folded plate

(c) Reinforcement panel pieces and connection panels arranged on the long side surfaces of the columnar concrete members are each bent plates.

It is the figure which showed the earthquake-proof reinforcement panel which concerns on this embodiment, (a) is horizontal sectional drawing, (b) is a side view. The whole assembly perspective view showing the earthquake-proof reinforcement panel concerning this embodiment. The detailed perspective view which showed a mode that it connected horizontally the reinforcement panel pieces 3b and 3b via the connection panel 4, and extended them upwards. The detailed vertical sectional view which follows the AA line of FIG.1 (b). The detailed horizontal sectional view which follows the BB line. The horizontal sectional view which showed the earthquake-proof reinforcement panel which concerns on a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a seismic reinforcing panel and a seismic reinforcing method using the same according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

  FIG. 1 is a horizontal sectional view and a side view showing an earthquake-resistant reinforcing panel according to this embodiment, and FIG. 2 is an overall perspective view. As can be seen from these drawings, the seismic reinforcing panel 1 according to the present embodiment is a steel reinforcing panel configured to be wound around the RC wall 2 as a columnar concrete member having a rectangular cross section. 3 and a steel connection panel 4.

  The reinforcing panel 3 is composed of a reinforcing panel piece 3a arranged on the short side and a total of four reinforcing panel pieces 3b arranged on the long side, respectively, around the RC wall 2; The connection panel 4 is configured so that the reinforcing panel pieces 3b and 3b and the reinforcing panel pieces 3a and 3b adjacent in the horizontal direction can be joined to each other.

  The reinforcing panel piece 3a is formed in a square shape from a flat plate portion 21 that is spaced apart from the short side surface so as to face the short side surface of the RC wall 2 and from both side edges of the flat plate portion. It is composed of two curved portions 22 and 22 each extending.

  In the vicinity of the connection edge portion of the curved portions 22, 22 constituting the reinforcing panel piece 3 a, when wound around the RC wall 2, it protrudes inward toward the longitudinal side surface of the RC wall. A rectangular connection projecting portion 6a is formed by pressing, and the connection panel 4 is formed with a rectangular connection opening 7 into which the connection projecting portion is fitted.

  A connection protrusion 6b similar to the connection protrusion 6a is also formed near the connection edge of the reinforcing panel piece 3b by pressing, and the connection protrusion is formed on the connection panel 4. It is adapted to be fitted into a rectangular connection opening 7.

  Here, the curved portions 22 and 22 of the reinforcing panel piece 3a, the reinforcing panel piece 3b, and the connection panel 4 arranged on the longitudinal side surface side of the RC wall 2 have an overall horizontal cross section in one of the RC walls 2 in their joined state. It is configured to have a convex curved cross section from the vicinity of the edge of the long side surface (in FIG. 1 (a), the upper left corner of the RC wall 2) through the center of the long side surface to the vicinity of the other long side surface edge (also the upper right corner). is there.

  The curved portions 22, 22 of the reinforcing panel piece 3a, the curved shapes of the reinforcing panel piece 3b, and the connection panel 4 can be restrained by an in-plane tensile force as a reaction force generated by the swelling of the RC wall 2. For example, an arc shape may be set.

  The reinforcing panel pieces 3a and 3b may be, for example, SS400 hot-rolled steel plates having a thickness of about 3.2 mm.

  The connecting projecting portions 6a and 6b are formed in two stages on the reinforcing panel pieces 3a and 3b, respectively, so that the upper and lower stages are in a posture in which the reinforcing panel 3 is wound around the RC wall 2.

  FIG. 3 is an assembled perspective view showing a state in which the reinforcing panel pieces 3b and 3b are connected horizontally via the connection panel 4 and are extended upward, and FIG. 4 is an A perspective view of FIG. A detailed vertical sectional view taken along the line -A, and FIG. 5 is a detailed horizontal sectional view taken along the line BB.

  As can be seen from these drawings, a lower edge side coupling locking portion 31 is provided at the lower edge of the reinforcing panel piece 3b, and an upper edge side locking portion 32 is provided at the upper edge. Four connection openings 7 are formed so as to form two left and right rows in two stages, and an engaging portion insertion groove 51 is formed between the upper and lower connection openings.

  On the other hand, the reinforcing panel piece 3b is provided with a reinforcing side screw hole 8, and the connecting panel 4 has a connecting side screw hole 9 into which a screw 71 as a connecting means inserted through the reinforcing side screw hole is screwed. It is provided.

  Here, the reinforcing panel pieces 3b and 3b or the reinforcing panel pieces 3a and 3b are sheared at the time of earthquake acting on the RC wall 2 by the tensile resistance action due to the fitting between the connecting projecting portions 6a and 6b and the connecting opening 7. Although it resists the force, the screw, which is the connecting means, prevents such a disengagement.

  Therefore, a predetermined play is provided between the reinforcing-side screw hole 8 and the screw 71 so as not to affect the tensile resistance action caused by the fitting.

  In order to perform seismic reinforcement using the seismic reinforcement panel 1 according to the present embodiment, after assembling a scaffold as necessary, first, the reinforcement panel 3 composed of a plurality of reinforcement panel pieces 3a and 3b is placed around the RC wall 2. Wrap to surround

  Next, the reinforcing panel pieces 3a and 3b and the reinforcing panel pieces 3b and 3b are joined via the connection panel 4. When performing the joining operation via the connecting panel 4, the connection edges of the reinforcing panel pieces 3a and 3b are connected. The connecting protrusions 6 a and 6 b formed in the vicinity of the connection portion are fitted into the connection openings 7 formed in the connection panel 4.

  Further, as shown in FIG. 5, screws 71 are inserted into the reinforcing side screw holes 8 provided in the reinforcing panel pieces 3 a and 3 b, and the screws are screwed into the connecting side screw holes 9 provided in the connection panel 4.

  In this way, the two reinforcing panel pieces 3a and 3b or the reinforcing panel pieces 3b and 3b that are adjacent to each other in the horizontal direction are connected in the thickness direction at the overlapping portion with the connection panel 4 and are not welded. The reinforcing panel 3 can be wound around the RC wall 2.

  Next, a grout material 11 made of mortar or the like is injected into the gap between the reinforcing panel 3 and the RC wall 2 (see FIG. 1).

  Hereinafter, winding of the reinforcing panel 3 by joining the two reinforcing panel pieces 3a and 3b or the reinforcing panel pieces 3b and 3b via the connection panel 4 is repeated one layer at a time to a desired height.

  Here, when the winding of the reinforcing panel 3 is repeated one layer at a time and repeated to a desired height, as shown in FIG. 4, the reinforcing panel 3 is provided at the upper edge of the reinforcing panel piece 3 b that has been wound up in advance. The lower edge side connection locking portion 31 formed on the lower edge of the reinforcing panel piece 3b newly laminated on the upper edge side locking portion 32 is locked, and a sealant 81 as a watertight agent is applied or filled at the locking position. To do.

  If it does in this way, the situation where the injected grout material 11 leaks from the joint of the reinforcement panels 3 and 3 laminated | stacked up and down can be avoided beforehand.

  When the lower edge locking portion 31 of the reinforcing panel piece 3b newly wound around the upper edge side locking portion 32 provided on the upper edge of the reinforcement panel piece 3b that has been previously constructed is locked, the lower edge locking is performed. The portion 31 and the upper edge locking portion 32 are inserted into the locking portion insertion groove 51 formed in the connection panel 4 in a state where they are locked, as can be seen in FIG.

  Finally, if the scaffold is assembled, remove it.

  As described above, according to the seismic reinforcement panel 1 according to the present embodiment, the reinforcement panel 3 including the plurality of reinforcement panel pieces 3a and 3b and the connection panel 4 that connects them in the horizontal direction are used for reinforcement. The connection projections 6a and 6b are formed in the vicinity of the connection edges of the panel pieces 3a and 3b, and the connection opening 7 into which the connection projections are fitted is formed in the connection panel 4, and the seismic resistance When the reinforcing panel 1 is wound around the RC wall 2, the connection panel 4 is applied to the back side of the two reinforcing panel pieces 3a, 3b and the reinforcing panel pieces 3b, 3b adjacent in the horizontal direction, and a connection opening 7 of the connection panel is provided. Since the connecting projections 6a and 6b formed on the reinforcing panel pieces 3a and 3b are respectively fitted to the reinforcing panel pieces 3a and 3b, the reinforcing panel pieces 3a and 3a adjacent to each other in the horizontal direction and the reinforcing members are reinforced. Nerupisu 3a, 3b becomes a be connected via the connection panel 4, thus a reinforcement panel 3 can stand up on RC wall 2 without welding.

  Moreover, according to the earthquake-proof reinforcement panel 1 which concerns on this embodiment, the reinforcement panel piece 3a, the reinforcement panel piece 3b, and the connection panel 4 which are arrange | positioned among the reinforcement panel 3 and the connection panel 4 at the longitudinal side surface side of RC wall 2 are provided. Since the entire horizontal cross section in the joined state is a convex curved cross section from one longitudinal side edge of the RC wall 2 to the other longitudinal side edge through the longitudinal side center, the RC wall 2 The bulge can be restrained substantially only by the in-plane tensile force of the reinforcing panel 3 and the connection panel 4, thus eliminating the need for out-of-plane bending and shearing rigidity, and greatly reducing the thickness of the steel sheet. It becomes.

  That is, when the RC wall 2 tries to bulge due to repeated loading of bending shear or loading of excessive axial force, the reinforcing panel 3 and the connection panel 4 wound around the RC wall bulge of the RC wall 2. Is firmly restrained by in-plane tensile force (hoop tension).

  Therefore, even if it is a wall-shaped rectangular cross section with a large difference in aspect ratio, it is possible to improve toughness in bending shear characteristics and improve seismic performance without using a tensile material such as a PC steel bar.

  Moreover, according to the seismic reinforcement panel 1 which concerns on this embodiment, since the connection panel 4 and the reinforcement panel pieces 3a and 3b were connected in the thickness direction with the screw 71 in the location where they were piled up, the reinforcement panel The connecting protrusions 6a and 6b of the pieces 3a and 3b can be firmly fitted into the connection openings 7 of the connection panel 4, respectively. And since the projections 6a and 6b for connecting the reinforcing panel pieces 3a and 3b are formed so as to be fitted to the connecting opening 7 of the connecting panel 4, the reinforcing panel 3 and the connecting panel 4 are As a result, the tensile resistance is increased, and the RC wall 2 can be subjected to shear reinforcement with higher strength than before.

  Moreover, according to the earthquake-resistant reinforcement panel 1 and the earthquake-resistant reinforcement method using the same according to the present embodiment, there is no need to use a heavy machine such as a crane, and it is possible to reduce the size of the earthquake-resistant reinforcement work. Play.

  In addition, since on-site welding is not required, on-site coating can be omitted, and the thickness of the reinforcing panel pieces 3a and 3b can be significantly reduced as compared with the conventional case. The weight of 3b itself can also be reduced, and the seismic reinforcement work can be further reduced in scale. Specifically, it is possible to perform seismic reinforcement work even in a store or a narrow place.

  In addition, according to the seismic reinforcement panel 1 according to the present embodiment, the connecting projecting portions 6a and 6b and the connection opening 7 are formed in a rectangular shape. As can be seen, it becomes a box body, and therefore, it becomes possible to support the tensile force while maintaining high rigidity as a whole against the tensile force acting during an earthquake, and the tensile force between the reinforcing panel pieces 3a and 3b. Is transmitted reliably.

  Moreover, according to the earthquake-proof reinforcement panel 1 which concerns on this embodiment, since the lower edge side connection latching | locking part 31 was provided in the lower edge of the reinforcement panel piece 5, and the upper edge side latching | locking part 32 was provided in the upper edge, respectively, the joining panel 4 The reinforcing panel pieces 5 that are joined horizontally through the joints are also joined in the vertical direction, and the workability when the reinforcing panels 3 are stacked vertically upward is improved.

  In the present embodiment, the entire curved shapes of the curved portions 22 and 22 of the reinforcing panel piece 3a, the reinforcing panel piece 3b, and the connection panel 4 are set in an arc shape, for example, but these curved shapes are limited to an arc shape. For example, it can be set in an elliptical arc shape.

  In the present embodiment, the curved portions 22, 22 of the reinforcing panel piece 3a, the reinforcing panel piece 3b, and the connection panel 4 arranged on the long side surface side of the RC wall 2 are convex in the entire horizontal cross section in their joined state. Although it comprised so that it might become a curved cross section, instead of making both the reinforcement panel pieces 3a and 3b and the connection panel 4 curve, one side can be made into a flat plate and the other can be made into a bending plate.

  FIG. 6 shows a reinforcing panel piece 3a ′ in which the curved portions 22 and 22 of the reinforcing panel piece 3a are replaced with flat plate portions 22 ′ and 22 ′, and a reinforcing panel piece 3b in which the reinforcing panel piece 3b is formed into a flat plate instead of a curved shape. 'Is shown in a modified example in which' is connected with a connection panel 4 'formed of a bent plate.

  In the modification according to the figure, the reinforcing panel piece 3a 'and the reinforcing panel piece 3b' are arranged in a polygonal shape. However, the point that the bulge of the RC wall 2 can be restrained by the hoop tension is described above. This is the same as the embodiment.

  The reinforcing panel piece 3a ′, the reinforcing panel piece 3b ′, and the connection panel 4 ′ are the same as the reinforcing panel piece 3a, the reinforcing panel piece 3b, and the connection panel 4 except that they are formed flat or bent. The description of the connection projecting portions 6a and 6b and the connection opening 7 is omitted here.

  Further, in the present embodiment, the connection projecting portions 6a and 6b and the connection openings 7 into which the connection protrusions 6a and 6b are fitted are formed in a rectangular shape, but the connection panel 4 serves as a tensile force transmission member and the reinforcing panel pieces 3a, As long as 3b can be joined, the shape is not limited to a rectangular shape, and various shapes such as a circle and a polygon other than a rectangle can be selected.

  Further, in the present embodiment, the reinforcing panel pieces 3a and 3b are connected in the vertical direction so that the water-stopping property is maintained. However, in terms of shear reinforcement, the reinforcing panel pieces 3a and 3b are connected between the upper and lower sides. Since it is not necessary, the reinforcing panel pieces 3a and 3b may be disconnected from each other if the grout material is prevented from leaking with a curing tape or the like. In this case, the lower edge locking portion 31 and the upper edge locking portion 32 may be omitted. Accordingly, the engaging portion insertion groove 51 formed in the connection panel 4 can be omitted.

1 Seismic reinforcement panel 2 RC wall (columnar concrete member)
DESCRIPTION OF SYMBOLS 3 Reinforcement panel 3a, 3b Reinforcement panel piece 4 Connection panel 6a, 6b Connection protrusion 7 Connection opening 11 Grout material 31 Lower edge side locking part 32 Upper edge side locking part 51 Locking part insertion groove 71 Screw (connection means )
81 Sealant

Claims (5)

A reinforcing panel composed of a plurality of reinforcing panel pieces that can be rolled up so as to surround a columnar concrete member having a wall-like rectangular cross section, and a connection for joining adjacent reinforcing panel pieces among the reinforcing panel pieces A connecting edge of the reinforcing panel piece so that the reinforcing panel protrudes inward toward the peripheral surface of the columnar concrete member in a state where the reinforcing panel is wound around the columnar concrete member A connection projection is formed in the vicinity and a connection opening into which the connection projection is fitted is formed in the connection panel, and the reinforcing panel piece and the connection panel are overlapped with each other. bis, screws, a seismic reinforcement panel linked freely configured in the thickness direction via the connecting means such as a bolt, the reinforcing panel and the connection path A reinforcing plate disposed on the short side surface of the columnar concrete member, and a flat plate portion disposed away from the short side surface so as to face the short side surface of the columnar concrete member; A reinforcing panel composed of a reinforcing panel piece composed of two curved portions respectively extending in a U-shape from both side edges of the flat plate portion, and a reinforcing panel disposed on the longitudinal side surface of the columnar concrete member; The connection panel and the curved portion are such that the entire horizontal cross section in the joined state thereof is a convex curved cross section that extends from one longitudinal side edge of the columnar concrete member to the other longitudinal side edge through the longitudinal side center. Seismic reinforcement panel characterized by comprising. The seismic reinforcement panel according to claim 1, wherein the reinforcement panel piece and the connection panel arranged on the longitudinal side surface side of the columnar concrete member are respectively curved. The seismic reinforcement panel according to claim 1, wherein one of the reinforcing panel piece and the connection panel arranged on the longitudinal side surface side of the columnar concrete member is a flat plate and the other is a bent plate. A reinforcing panel composed of a plurality of reinforcing panel pieces is wound up so as to surround the periphery of a columnar concrete member having a wall-like rectangular cross section, and among the reinforcing panel pieces, reinforcing panel pieces adjacent in the horizontal direction are connected to each other via a connection panel. Joining and filling the gap between the reinforcing panel and the columnar concrete member with a grout material such as mortar and concrete, and winding the reinforcing panel by joining the reinforcing panel pieces through the connection panel one by one with repeated until desired height upward, the reinforcing panel to be projected inwardly toward the peripheral surface of the columnar concrete members when erected winding the reinforcing panel around the columnar concrete member A connecting projection formed near the connection edge of the piece is fitted into the connection opening formed in the connection panel. And bis in place of the said reinforcing panel piece and the connection panel thereof superimposed, screws, a seismic reinforcement method for coupling in the thickness direction via the connecting means such as a bolt, the reinforcing panel and the connection Among the panels, a reinforcing panel arranged on the short side surface side of the columnar concrete member, and a flat plate portion arranged apart from the short side surface so as to face the short side surface of the columnar concrete member; A reinforcing panel composed of a reinforcing panel piece composed of two curved portions respectively extending in a U-shape from both side edges of the flat plate portion, and a reinforcing panel disposed on the longitudinal side surface of the columnar concrete member; the connection panel and the bending portion, the entire horizontal cross section one longitudinal side edge of through longitudinal side center the other in the longitudinal of the columnar concrete member in their joined state Retrofit wherein the configured such that the convex curved section leading to the surface edge portion. The upper edge side locking portion provided on the upper edge of the reinforcing panel piece constituting the reinforcing panel that has been wound in advance when the reinforcing panel is repeatedly wound up one layer at a time to a desired height. The seismic resistance according to claim 4, wherein the lower edge side connection locking portion formed at the lower edge of the reinforcing panel piece constituting the reinforcing panel newly laminated is locked and a watertight agent is applied or filled in the locking portion. Reinforcement method.

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