JP2008057175A - Building seismically reinforcing method, building, and seismically reinforcing material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building seismically reinforcing method for improving earthquake resisting effect without damaging the appearance of a building or without hindering a view via an opening section or passage of persons through the opening section, and to provide the building, and a seismically reinforcing material. <P>SOLUTION: According to the building seismically reinforcing method, the seismically reinforcing material 2 is fixed to columns 5 or to a wall and a beam 7 around the opening section 4 facing the outside of a multiple dwelling building 3 so as to be astride the columns 5 or the wall and the beam 7. The building 1 is constructed by fixing the seismically reinforcing material 2 to the columns 5 or the wall and the beam 7 around the opening section 4 facing the outside of the multiple dwelling building 3, so as to be astride the columns 5 or the wall and the beam 7. The seismically reinforcing material 2 is formed like the tee. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a building earthquake resistance reinforcing method, a building, and an earthquake resistant reinforcing material capable of improving the earthquake resistance without impairing the appearance of the building or preventing a view through the opening and a person passing through the opening.

A typical example of a seismic reinforcement method for buildings is the so-called brace method. According to this brace method, lighting from an opening such as a window frame provided on the outer surface of the building or the entrance and exit of people through the opening is possible. Blocked by braces. Therefore, a building in which a lattice-shaped reinforcing body is provided with a gap between the outer wall of an existing building and the reinforcing body and the outer wall are connected by a connecting means is known.
JP 2002-242449 A

  However, in Patent Document 1, since the reinforcing wall and the reinforcing floor as the reinforcing body are located in front of the opening, the reinforcing body impairs the appearance when the building is viewed from the outside, or passes through the opening from the room. There was a problem of hindering the view. In addition, the outer wall and the reinforcing wall or the reinforcing floor are connected to each other by the connecting means, but the reinforcing wall and the reinforcing floor are connected to the part of the outer wall by the connecting means. Low strength and less earthquake resistance.

The method for seismic reinforcement of a building according to the present invention is characterized in that the seismic reinforcement is fixed to the column or wall and beam around the column or wall and beam around the opening facing the outside of the apartment building. To do.
It is also characterized by fixing a seismic reinforcement formed in a T shape.
The building according to the present invention is characterized in that the seismic reinforcement is fixed to the pillar or wall and beam around the pillar or wall and beam around the opening facing the outside of the apartment building.
The seismic reinforcement is also characterized by a T shape.
It is also characterized in that the seismic reinforcement is fixed to the pillar or wall and beam at three or more points.
It is also characterized in that the openings are all openings that serve as entrances and exits from the interior of each house of the apartment building to the veranda or hallway.
The seismic reinforcing material fixed to the pillar or wall and the beam on the lower floor and the seismic reinforcing material fixed to the pillar, the wall and the beam on the upper floor are connected to each other by a connecting means.
The seismic reinforcement of the present invention is characterized in that it is fixed to the pillar or wall and beam so as to straddle the pillar or wall and beam around the opening facing the outside of the apartment building.
The seismic reinforcement is also characterized by a T shape.

According to the seismic reinforcement method of a building of the present invention, the appearance when viewed from the outside of the building is not impaired, the view through the opening from the room and the person entering and exiting the opening are not obstructed, and the building Can improve the earthquake resistance.
By fixing the T-shaped seismic reinforcement, the seismic reinforcement can be used efficiently, and the length of the seismic reinforcement along the outer surface of the beam can be increased. It is possible to improve the strength of the seismic reinforcement against the force of the moment, and to improve the earthquake resistance effect of the building.
According to the building of the present invention, the seismic reinforcement is fixed to the pillar or wall and beam around the column or wall and beam around the opening facing the outside of the apartment building. The reinforcing material can provide a building having a high seismic effect without impairing the appearance when viewed from the outside of the building, preventing the view from the room through the opening, and preventing people from entering and exiting the opening.
By using the T-shaped seismic reinforcement, the seismic reinforcement can be used efficiently, and the length of the seismic reinforcement along the outer surface of the beam can be increased. It is possible to improve the strength of the seismic reinforcing material against and to provide a building with high seismic effect.
Since the seismic reinforcement is fixed to the pillar or wall and beam at three or more points, the anti-seismic reinforcement can be prevented from rotating, and the seismic reinforcement can be prevented from falling off by rotation. It can provide buildings with less deterioration of seismic structure.
In order to fix multiple seismic reinforcements to pillars or walls and beams around all openings or openings to the veranda or corridor from the interior of each door of the apartment building Can increase the rigidity of the building and provide buildings with high earthquake resistance.
The seismic reinforcements fixed to the lower-level pillars, walls, and beams and the seismic reinforcements fixed to the upper-level columns, walls, and beams are connected to each other by connecting means. The material and the building are integrated, and the integration of the existing building and the seismic reinforcing material is strengthened, so that a building having a higher seismic effect can be provided.
According to the seismic reinforcement of the present invention, the appearance when viewed from the outside of the building is not impaired, the view through the opening from the room and the entrance and exit of people through the opening are not hindered, and the seismic effect is improved. Can provide a tall building.
If the seismic reinforcement is T-shaped, the building can be constructed efficiently and a building with a high seismic effect can be constructed.

  1 to 3 show the best mode 1. FIG. FIG. 1 is a front view of the building as seen from the veranda side. Fig.2 (a) is a perspective view of a seismic reinforcement, FIG.2 (b) is a front view of a seismic reinforcement. 3A is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3B is a cross-sectional view taken along the line BB in FIG.

The building will be described with reference to FIG.
The building 1 has a seismic reinforcement 2 extending over the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 around the opening 4 facing the outside of an existing reinforced concrete apartment building 3. 6 and a building having a structure fixed to the outer surface 8 of the beam 7.
The opening 4 facing the outside of the existing apartment building 3 is, for example, an opening serving as an entrance to the veranda 11 from the interior of each door of the apartment building 3. Although not shown, an attachment frame such as a sash frame for attaching an opening / closing body such as a sliding door or a door is attached to the opening edge of the opening 4, and the opening / closing body is attached to the attachment frame so as to be opened and closed.

With reference to FIG. 2, the shape and size of the seismic reinforcement 2 will be described.
For example, a concrete plate made of a T-shaped flat plate is used as the seismic reinforcement member 2. It is preferable to use the seismic reinforcement 2 made of high-strength concrete because the seismic strength can be increased.
The size of the seismic reinforcement 2 formed in a T shape is, for example, a height H = 2500 mm, a lateral width D = 5000 mm, a plate thickness t = 150 mm, a height H1 of the T-shaped vertical portion 15 = 2000 mm, and a T-shape. The height H2 of the horizontal portion 16 is 500 mm, the horizontal width D1 of the vertical portion 15 is 800 mm, and the overhang length D2 of the horizontal portion 16 is 2100 mm. That is, the seismic reinforcement 2 has a T-shape having an area covering the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 across the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 around the opening 4. It is formed into a shape.
At both ends 17; 17 of the lateral portion 16 of the seismic reinforcement 2 are formed lateral end fixing holes 19; 19 penetrating both surfaces of the concrete plate forming the seismic reinforcement 2. A lower end fixing hole 20 is formed in the lower end portion 18 of the vertical portion 15 of the seismic reinforcement member 2 so as to penetrate both surfaces of the concrete plate forming the seismic reinforcement member 2. The diameters of the lateral end fixing holes 19; 19 and the lower end fixing hole 20 are, for example, 100 mm.
The height H of the seismic reinforcement 2 is formed to be shorter than the distance K between the upper surface 13 of the floor 12 of the lower veranda 11 and the lower surface 14 of the floor 12 of the upper veranda 11 (FIG. 1). reference). Since the height H of the seismic reinforcing material 2 is shorter than the distance K, the seismic reinforcing material 2 is carried on the veranda 11 in a T-shape, and the outer surface 6 of the column 5 and the beams 7; Since it can move to the direction of the outer surface 8 and it can fix to the said outer surface 6; 8, the fixing operation | work of the seismic reinforcement 2 becomes easy.

With reference to FIG. 1 thru | or FIG. 3, the earthquake-proof reinforcement method of the existing apartment building 3 using the earthquake-proof reinforcement 2 is demonstrated.
The back surface 21 of the vertical portion 15 of the seismic reinforcing material 2 and the outer surface 6 of one column 5 located beside the opening 4 are faced, and the back surface 22 of the horizontal portion 16 of the seismic reinforcing material 2 and the one column 5 And the outer surfaces 8 of the beams 7; 7 located above the openings 4; 4 on both sides of the column 5 are made to face each other. In addition, in the position of the beam 7 to which the lateral end fixing holes 19; 19 respectively formed in the both ends 17; 17 of the lateral portion 16 of the seismic reinforcement 2 correspond, the internal thread cylinder body in which the internal thread is formed on the inner wall of the tubular hole. 25 is attached so as to be embedded from the outer surface 8 of the beam 7 into the beam 7, and then a bolt 26 is screwed into the female screw cylinder 25 so that the tip of the bolt 26 protrudes from the outer surface 8 of the beam 7. A female screw cylinder 27 in which a female screw is formed on the inner wall of the cylindrical hole is provided at the position of the column 5 to which the lower end fixing hole 20 formed in the lower end portion 18 of the vertical portion 15 of the seismic reinforcement 2 corresponds. Then, a bolt 28 is screwed onto the female threaded cylinder 27 so that the tip of the bolt 28 protrudes from the outer surface 6 of the column 5. Then, after passing the lateral end fixing holes 19; 19 of the seismic reinforcing material 2 through the front ends of the bolts 26; 26 protruding from the outer surface 8 of the beam 7, the nuts 31 are fastened to the bolts 26 from the front ends of the bolts 26. Further, after passing the lower end fixing hole 20 of the seismic reinforcement 2 through the tip of the bolt 28 protruding from the outer surface 6 of the column 5, a nut 32 is fastened to the bolt 28 from the tip of the bolt 28.
As described above, the seismic reinforcement 2 is fixed to the outer surface 8 of the beam 7 by the fixing means 35 constituted by the female screw cylinder 25, the bolt 26, the lateral end fixing hole 19, and the nut 31, and the female screw cylinder 27. The bolt 28, the lower end fixing hole 20, and the nut 32 are fixed to the outer surface 6 of the column 5 by fixing means 36.

  The seismic reinforcement 2 is attached to each of the pillars 5 of the veranda 11 on each floor, so that the seismic reinforcement 2 is provided around the opening 4 facing the outside of the existing apartment building 3. A building 1 having a structure that is fixed to the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 across the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 can be constructed.

According to the above, the seismic reinforcement 2 is straddling the columns 5 and the beams 7 around all the openings 4 located on the veranda 11 side of the existing apartment building 3, and the outer surface 6 and the beams 7 of the columns 5. Fixed to the outer surface 8 by the fixing means 35; 36, so that the building having the structure including the seismic reinforcement 2 integrated with the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 by the fixing means 35; Since it can be constructed, the rigidity of the building is increased, and the building 1 having a high earthquake resistance can be provided.
In particular, the lateral portions 16 of the plurality of seismic reinforcing members 2 are continuously fixed to the outer surface 8 along the outer surface 8 of the beam 7 positioned above the plurality of openings 4, and Since the vertical portion 15 is fixed to the outer surface 6 of each column 5 located between the opening 4 and the opening 4, a plurality of horizontal portions fixed continuously to the outer surface 8 along the outer surface 8 of the beam 7 are provided. Since the proof strength which receives the force in the case of an earthquake improves by the some vertical part 15 fixed to the outer surface 6 for every outer surface 6 of the pillar 5 between the opening part 4 of the part 16 and the beam 7, the earthquake resistance effect is high. Building 1 can be provided.

  Since the seismic reinforcement 2 processed into a T-shape is used, the seismic reinforcement 2 can be fixed to the outer surface 6 of one column 5 and the outer surfaces 8 of the beams 7 provided on the left and right of the column. The three seismic reinforcements 2 can be fixed so as to surround the three openings 4, and the seismic reinforcement 2 can be used efficiently in the construction of the building 1. Moreover, since the length along the outer surface 8 of the beam 7 can be increased and the strength of the seismic reinforcement 2 against the force in the event of an earthquake can be improved, the building 1 having a high seismic effect can be provided.

  Further, the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 around the opening 4 are fixed by means of fixing means 35; 36 at both ends 17; 17 of the horizontal portion 16 of the seismic reinforcement 2 and the lower end portion 18 of the vertical portion 15. Therefore, it is possible to prevent the earthquake-resistant reinforcing material 2 from rotating along the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 by the force in the event of an earthquake, and the building 1 having a high earthquake-resistance effect can be provided. That is, as shown in FIG. 1, the seismic reinforcement 2 is fixed to the pillar 5 and the beam 7 at three points when viewed from the veranda 11, and is formed by connecting these three points. Since the structure is located at the apex of the triangle, the anti-seismic reinforcing material 2 can be prevented from rotating, and the seismic reinforcing material 2 can be prevented from falling off due to the rotation. Fewer buildings 1 can be provided.

In addition, when the outside is viewed from the indoor side through the opening 4, the seismic reinforcement 2 is not positioned in front of the opening 4, so that the appearance when viewed from the outside of the building like a conventional reinforcing body is impaired. Or the building 1 which does not disturb the view through the opening 4 from the room can be provided.
In addition, since the seismic reinforcing material 2 does not block the opening 4, the seismic reinforcing material 2 does not hinder a person entering and exiting the opening 4.

  Furthermore, as shown in FIG.3 (b), the floor through-hole 40 penetrated up and down is provided in the floor 12 of the veranda 11 of the upper floor facing the center upper end part between the right and left of the seismic reinforcement 2 fixed to the lower floor. At the same time, an upper end attachment hole 42 for attaching the connecting reinforcing bar 41 is formed on the upper end surface of the central upper end portion between the left and right of the seismic reinforcement 2 fixed to the lower floor. Then, the connecting reinforcing bar 41 is inserted into the upper end mounting hole 42 from the upper floor veranda 11 through the floor through hole 40 and fixed with an adhesive or the like. The connecting reinforcing bar 41 protrudes upward from the upper surface 13 of the floor 12 of the upper veranda 11 via the floor through hole 40. Next, a lower end mounting hole 43 is formed at the lower center between the left and right of the seismic reinforcement member 2 fixed to the upper floor, and the upper end portion of the connecting reinforcing bar 41 is inserted into the lower end mounting hole 43 and fixed with an adhesive or the like. To do. Thereafter, the floor through-hole 40 is filled with concrete having fluidity such as ready-mixed concrete. When the concrete is solidified, the lower and upper ends of the upper and lower seismic reinforcing members 2; 2 are connected to each other by the connecting reinforcing bars 41 and the concrete 45, and the upper and lower seismic reinforcing members 2; 2 and the floor 12 of the veranda 11 are integrated with each other. It becomes. Thus, the seismic reinforcement 2 fixed to the lower pillar 5 and the beam 7 and the seismic reinforcement 2 fixed to the upper pillar 5 and the beam 7 include the floor through hole 40, the connecting reinforcing bar 41, Since the upper and lower seismic reinforcement members 2; 2 and the floor 12 of the veranda 11 are integrated with each other by coupling means 46 made of concrete 45, the existing apartment building 3 and the seismic reinforcement are constructed. Integration with the material 2 becomes strong, and the building 1 with higher earthquake resistance can be provided.

  You may use the seismic reinforcement 2 formed in the L shape as shown in FIG. You may use the seismic reinforcement 2 formed in the reverse concave shape which united two L-shapes shown in FIG. When the space between the lower edge 4e of the opening 4 (see FIG. 1) and the upper surface 13 of the floor 12 of the veranda 11 is large, the seismic reinforcement 2 formed in a square shape or a U shape is used. Also good.

  You may use the seismic reinforcement 2 formed with metals, such as an iron plate, a steel plate, and a cast iron plate.

  The fixed position of the seismic reinforcement 2 may be three or more, and at least any three points may be located at the apex of a triangle formed by connecting the three points. For example, the seismic reinforcement member 2 may be fixed at four points by fixing the central portion between the left and right sides of the lateral portion 16 of the T-shaped seismic reinforcement member 2 with the fixing means 36.

  As shown in FIG. 5, a number of reinforcing bars 51 projecting from the back surface 21; 22 of the seismic reinforcement 2 facing the outer surface 6 of the column 5 and the outer surface 8 of the beam 7, the outer surface 6 of the column 5 and the outer surface 8 of the beam 7. The reinforcing means 52 for fixing the seismic reinforcing material to the outer surface of the beam or the column may be constituted by the more protruded reinforcing bars 52 and the concrete 53 connecting these reinforcing bars to each other. In this case, the fixing means 55 is preferable because the coupling force between the beam 7 or the column 5 and the seismic reinforcement 2 is increased.

  Although not shown, the fixing means is configured by a through-hole penetrating from the inner surface of the beam or column to the outer surface, a female screw cylinder having a female screw formed on the inner wall of the cylindrical hole, a bolt, a nut, and a fixing hole formed in the seismic reinforcement. Also good. In other words, a female screw cylinder is fixed in a through-hole formed in a beam or column, and a bolt is screwed into the female screw cylinder so that the tip of the bolt protrudes from the outer surface of the beam or column. The seismic reinforcement 2 may be fixed to the beam 7 or the column 5 by fastening a nut to the bolt from the tip of the bolt after passing through the through-hole of the material.

  As shown in FIG. 1, if each seismic reinforcement 2 is fixed by the fixing means 35; 36 so that the end faces 56; 56 of the adjacent seismic reinforcement 2; Although the seismic strength is improved by the butting, the seismic reinforcing members 2 may be fixed by the fixing means 35 and 36 without the end surfaces 56; 56 of the adjacent seismic reinforcing members 2;

  As shown in FIG. 6, when a wall 60 is provided between the pillar 5 and the pillar 5 on the outer face of the existing apartment building 3 on the veranda 11 side, the outer face of the pillar 5 around the opening 4. 6 and the outer surface 8 of the beam 7, the seismic reinforcement 2 is fixed to the outer surface 6 of the column 5 and the outer surface 8 of the beam 7, and the surface 61 of the wall 60 around the opening 4 and the outer surface of the beam 7. If the existing apartment building 3 is seismically strengthened by fixing the seismic reinforcement 2 to the surface 61 of the wall 60 and the outer surface 8 of the beam 7 across the wall 8, the building 1 having a higher seismic effect is provided. it can.

  As shown in FIG. 7, the outer surface 6 of the column 5 straddling the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 around the opening 4 facing the corridor 65 as the outside in the existing apartment building 3. The seismic reinforcement 2 is fixed to the outer surface 8 of the beam 7, and the surface 61 of the wall 60 and the outer surface 8 of the beam 7 straddle the surface 61 of the wall 60 around the opening 4 and the outer surface 8 of the beam 7. By fixing the seismic reinforcement 2 to the building, even if the existing apartment building 3 is seismically reinforced, the building 1 having a high seismic effect can be provided. In this case, the opening 4 is an entrance / exit 66 of each door, a window 68 on the entrance side, or the like.

  The seismic reinforcement 2 is not fixed to the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 across the outer surface 6 of the column 5 and the outer surface 8 of the beam 7 around the opening 4. The seismic reinforcing material 2 may be simply fixed to the surface 61 of the wall 60 and the outer surface 8 of the beam 7 across the surface 61 of the wall 60 and the outer surface 8 of the beam 7. That is, the seismic reinforcement 2 is fixed to the surface 61 of the wall 60 and the outer surface 8 of the beam 7 across the surface 61 of the wall 60 around the opening 4 and the outer surface 8 of the beam 7. Even if it is the building 1 made, the earthquake-proof effect can be improved.

Front view of the building from the veranda side (best mode). The perspective view and front view (best form) which show a seismic reinforcement. 1. AA sectional drawing and BB sectional drawing of FIG. 1 (best form). The figure which shows the other example of a seismic reinforcement. The figure which shows the other example of a fixing means. The figure which shows the other example to which the seismic reinforcement was fixed ranging over the pillar and beam around the opening part used as the entrance and exit to a veranda, and a wall and a beam. The figure which shows the other example by which the earthquake-proof reinforcement material was fixed ranging over the pillar and beam around the opening part facing a corridor, and a wall and a beam.

Explanation of symbols

1 building, 2 seismic reinforcement, 3 existing apartment building, 4 opening,
5 columns, 6 columns exterior, 7 beams, 8 beams exterior, 11 veranda,
35; 36:55 fixing means, 46 connecting means, 60 walls, 65 corridor.

Claims (9)

  A method for seismic reinforcement of a building, characterized in that a seismic reinforcement is fixed to the pillar or wall and beam around an opening facing the outside of the apartment building.   The earthquake-resistant reinforcement method for buildings according to claim 1, wherein an earthquake-resistant reinforcement material formed in a T-shape is fixed.   A building characterized in that the seismic reinforcement is fixed to the pillar or wall and beam around the pillar or wall and beam around the opening facing the outside of the apartment building.   The building according to claim 3, wherein the seismic reinforcement is T-shaped.   The building according to claim 3 or 4, wherein the seismic reinforcement is fixed to the pillar or wall and the beam at three or more points.   The building according to any one of claims 3 to 5, wherein the openings are all the openings serving as entrances to the veranda or the corridor from the interior of each door of the apartment building.   The seismic reinforcing member fixed to the pillar or wall and beam of the lower floor and the seismic reinforcing member fixed to the pillar, wall and beam of the upper floor are connected to each other by connecting means. Item 7. The building according to any one of Items 6.   An earthquake-resistant reinforcing material, which is fixed to a pillar or a wall and a beam so as to straddle the pillar or the wall and the beam around the opening facing the outside of the apartment building.   The seismic reinforcing material according to claim 8, which has a T shape.

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