JP2007016472A - Aseismatic reinforcing structure of existing building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismatic reinforcing structure, economically constructible in a short period, and superior in an aesthetic appearance, natural lighting performance, ventilation performance and easiness-to-use of an existing building after construction. <P>SOLUTION: This aseismatic reinforcing structure 1 of the existing building is constituted so that an aseismatic reinforcing column 4 is integrally formed on a corner column 3 of the existing building 2, and a tension material 5 is arranged by imparting predetermined tensional force in the span direction and the ridge direction of these aseismatic reinforcing columns 4. These tension materials 5 are arranged in an arranging place of a beam. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seismic reinforcement structure for existing buildings.

There are various restrictions when an existing building with high publicity, such as a school building or hospital ward, is used as an earthquake resistant reinforcement structure. For example, in the case of a school building, it is necessary to construct it in a short period such as summer vacation, but it is necessary to construct a ward, an apartment house, etc. in a normal use state. Furthermore, it is necessary to consider the aesthetics, lighting, ventilation, usability, etc. of the existing building after the seismic reinforcement, but in actuality only a part of these is considered, and the seismic reinforcement structure 25 as shown in FIG. That is, the seismic reinforcement structure 25 in which the inverted V-shaped steel brace 27 is attached to the window frame 26 is formed. Moreover, as another seismic reinforcement structure, there exists invention of Unexamined-Japanese-Patent No. 2005-163432, for example.
JP 2005-163432 A

  However, although the above-mentioned seismic reinforcement structure has an advantage that it can be constructed in a short period of time, there are problems that the aesthetics, lighting, ventilation and usability of the existing building are inferior.

  The present invention has been made in view of the above problems, and its purpose is that it can be constructed in a short period of time and economically, as well as the beauty of the existing building after construction, daylighting, ventilation, usability, etc. It is to provide an excellent seismic reinforcement structure.

  In order to solve the above problems, the seismic reinforcement structure of the existing building of the present invention is such that the seismic reinforcement columns are integrally formed in the corner columns of the existing building, and the tensile material is predetermined in the beam-to-beam direction and the sparing direction of these seismic reinforcement columns. It was installed with tension applied, and these tension members were arranged at the installation location of the beam. In addition, it includes that an extension material extending in the direction of the beam is integrally formed at the bottom of the seismic reinforcement column. In addition, the seismic reinforcement column includes that the auxiliary column integrally formed with the existing column in the row direction adjacent to the corner column is integrally connected with the connecting material. Moreover, the outer surface except the opening part of the existing building between earthquake-proof reinforcement pillars was covered with the earthquake-resistant frame, and the tension material was wired in this earthquake-resistant frame.

  Seismic reinforcement structure for existing buildings with high publicity such as school buildings and hospital wards can be constructed in a short period of time. In addition, it has excellent aesthetics, lighting, ventilation and usability of the seismic reinforcement structure of existing buildings after construction. Moreover, it can be constructed in a short time and economically by constructing the seismic reinforcement structure of the existing building with cast-in-place concrete or precast concrete.

  Hereinafter, an embodiment of an earthquake-proof reinforcement structure for an existing building of the present invention will be described with reference to the drawings. This existing building is a highly public building such as a school building or a ward, or an apartment house. In this embodiment, the school building will be described. In each embodiment, the same components are described with the same reference numerals, and only different components are described with different reference numerals.

  FIG.1 and FIG.2 shows the earthquake-proof reinforcement structure 1 of the existing building of 1st Embodiment. The seismic reinforcement structure 1 is constructed by installing tension members 5 in the beam-to-beam and girder directions of a seismic reinforcement pillar 4 integrally formed on a corner pillar 3 of an existing building 2 elongated in the lateral direction.

  This seismic reinforcement column 4 is made of cast-in-place concrete or precast concrete and is formed into a flat T shape. The horizontal member 6 and the vertical member 7 constituting this T shape are integrally formed at the corners so as to cover the two surfaces of the corner column 3. Has been. Further, an extension member 9 extending in the direction of the beam and integrated with the foundation beam 8 is formed at the lower part of the horizontal member 6 of the earthquake-proof reinforcement column 4 to form an L-shaped earthquake-proof reinforcement column 4 in a front view.

  On the opposite side of the horizontal member 6 is formed a skirt portion 10 that gradually becomes wider toward the lower side, and a reinforcing member 11 extending in the inter-beam direction on the lower surface of the skirt portion 10 is integrated with the corner column footing 12. Is formed. Thus, the seismic reinforcement column 4 becomes a part of the corner column 3, and the lower side also becomes a part of the foundation beam 8 and the footing 12 by the horizontal member 6 and the reinforcement member 11, and faces each other in the direction of the beam and between the beams. It has become.

  A tensile member 5 such as a PC steel wire or a PC steel strand is arranged with a predetermined tension in the direction of the aseismic reinforcement columns 4 facing each other and the direction between the beams. At the same time, both ends in the direction between the beams are fixed to the vertical member 7. The tension member 5 is disposed at a place other than the opening, that is, a place where the beam 8a is installed.

  FIG. 2 shows the seismic reinforcement structure 1 in which the outer surface of the existing building 2 except for the opening is covered with a seismic frame 13 and a tensile member 5 is wired in the seismic frame 13. The structure is the same as in Structure 1. This is to renew the outer surface of the existing building 2 by covering the outer surface of the existing building 2, which is seismically reinforced with the seismic reinforcing columns 4 and the tension members 5, with the seismic frame 13. This seismic frame 13 is constructed in such a manner that a precast concrete beam 14b is installed between precast concrete columns 14 provided with jaws 14a built along an existing building and prestressed with a tension member 5 to be joined. It is integrally formed on the outer surface. The seismic frame 13 makes the existing building 2 a reinforced structure and has excellent aesthetics, lighting, ventilation and usability after construction.

  FIG. 3 shows a structure in which an anti-seismic reinforcement column 4a formed in an inverted T-shape in a front view is installed in a corner post 3, and the other configuration is the same as that of the seismic reinforcement structure 1 of the first embodiment. The seismic reinforcement column 4a in which the extension member 9 extends outward from the skirt portion 10 can stabilize the foundation portion because the extension member 9 extends on both sides.

  FIGS. 4-6 shows the seismic reinforcement structure 15 of the existing building of 2nd Embodiment. In this seismic reinforcement structure 15, seismic reinforcement pillars 18 in which auxiliary pillars 16 are integrally formed with a connecting member 17 are installed in the corner pillars 3 so as to face each other in the direction of beams and between beams. The tensile material 5 is installed between the reinforcing columns 18 and the other configuration is the same as that of the seismic reinforcement structure 1 of the first embodiment. The seismic reinforcement column 18 is formed in a plane L shape so as to cover the two surfaces of the corners of the corner column 3 and is a part thereof. The auxiliary column 16 is also formed integrally with the existing column 19 in the column direction adjacent to the corner column 3 and is a part of the column. Further, the tensile material 5 in the long side direction is wired to the girder side reinforcing column 20 covering one surface of the corner column 3 in the opposing seismic reinforcing column 18, the connecting material 17 and the auxiliary column 16, and both ends thereof are the corner column 3. It is fixed to the inter-beam side reinforcing column 21 covering one surface. On the other hand, the tensile material 5 in the short side direction is also wired and fixed to the inter-beam-side reinforcing columns 21 facing each other.

  As shown in FIG. 2, the seismic reinforcement structure 15 can also be formed by covering the outer surface of the existing building 2 except the opening with an earthquake resistant frame 13 and wiring the tensile material 5 in the earthquake resistant frame 13. This also renews the outer surface of the existing building 2 and forms a pre-stressed seismic frame 13 integrally on the outer surface of the existing building 2 so that the aesthetics, lighting, ventilation and usability after construction are improved. It will be excellent.

  FIGS. 7-9 shows the earthquake-proof reinforcement structure 22 of the existing building of 3rd Embodiment. This seismic reinforcement structure 22 is formed by installing a tension member 5 between seismic reinforcement columns 23 integrally formed on the side of the corner column 3 between the beams, and other than that, the seismic reinforcement of the first embodiment. The structure is the same as in Structure 1. A part of the seismic reinforcement column 23 protrudes from the corner column 3 in the direction of the row direction, and the tensile material 5 in the long side direction is wired and fixed to the projection 24. On the other hand, the tensile material 5 in the short-side direction is also wired and fixed to the seismic reinforcing column 23 that faces it.

  As shown in FIG. 2, the seismic reinforcement structure 22 can also be formed by covering the outer surface of the existing building 2 except the opening with the seismic frame 13 and wiring the tensile material 5 in the seismic frame 13. This also renews the outer surface of the existing building 2 as described above, and the earthquake-resistant frame 13 is integrally formed on the outer surface of the existing building 2, and has excellent aesthetics, lighting, ventilation and usability after construction. Become.

It is a perspective view of the earthquake-proof reinforcement structure of 1st Embodiment. (1) is a cross-sectional view of the seismic frame, and (2) is a cross-sectional view taken along line AA of (1). It is a perspective view of other seismic reinforcement structure of a 1st embodiment. It is the earthquake-proof reinforcement structure of 2nd Embodiment, (1) is a front view, (2) is the BB sectional drawing of (1), (3) is a side view. (1) is sectional drawing of the earthquake-proof reinforcement pillar of the earthquake-proof reinforcement structure of 2nd Embodiment, (2) is sectional drawing of the principal part. (1) is sectional drawing of the principal part of the earthquake-proof reinforcement pillar of the earthquake-proof reinforcement structure of 2nd Embodiment, (2) is CC sectional view taken on the line of (1). It is the earthquake-proof reinforcement structure of 3rd Embodiment, (1) is a front view, (2) is the DD sectional view taken on the line of (1), (3) is a side view. (1) is sectional drawing of the earthquake-proof reinforcement pillar of the earthquake-proof reinforcement structure of 3rd Embodiment, (2) is sectional drawing of the principal part. (1) is sectional drawing of the principal part of the earthquake-proof reinforcement pillar of the earthquake-proof reinforcement structure of 3rd Embodiment, (2) is the EE sectional view taken on the line of (1). It is a front view of the earthquake-proof reinforcement pillar of the conventional earthquake-proof reinforcement structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 15, 22, 25 Seismic reinforcement structure 2 Existing building 3 Corner pillar 4, 4a, 18, 23 Earthquake resistant reinforcement pillar 5 Tensile material 6 Horizontal material 7 Vertical material 8 Foundation beam 9 Extension material 10 Skirt part 11 Reinforcement material 12 Footing 13 Seismic frame 14 Precast concrete column 14a Jaw 14b Precast concrete beam 16 Auxiliary column 17 Connecting material 19 Existing column 20 Girder side reinforcement column 21 Interbeam side reinforcement column 24 Projection 26 Window frame 27 Steel brace

Claims (4)

  Seismic reinforcement columns are integrally formed in the corner columns of existing buildings, and tensile materials are installed with a specified tension in the beam-to-beam and girder direction of these earthquake-proof reinforcement columns. These tensile materials are installed at the beam installation locations. Seismic reinforcement structure for existing buildings, characterized by being arranged.   2. The seismic reinforcement structure for an existing building according to claim 1, wherein an extension material extending in the direction of the girder is integrally formed at a lower portion of the earthquake resistance reinforcement column.   2. The seismic reinforcement structure for an existing building according to claim 1, wherein an auxiliary pillar integrally formed with the existing pillar in the row direction adjacent to the corner pillar is integrally connected to the earthquake resistant reinforcement pillar by a connecting material. .   The outer surface of the existing building except for the opening of the existing building between the seismic reinforcement columns is covered with an earthquake resistant frame, and a tensile material is wired in the earthquake resistant frame. Seismic reinforcement structure.

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