JP2005299171A - Aseismatic structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic structure of a building, which can reduce the total number of beam-column frame surfaces for installing a seismic damper and a brace material and can enhance the degree of the freedom of the plan and design of an opening, by installing the seismic damper and the brace material in the beam-column frame surface of the building in such a manner as to combine them together and enable them to sufficiently exert each function. <P>SOLUTION: In this seismic structure, the seismic control damper 4 and the brace material 5 are installed in the beam-column frame surface 3 of the structure in a combined manner; the beam 2 is installed almost in the center of a span; and the brace material 5 is arranged between the upper and lower beams 2 and 2, and combined together so as to restrain the bending deformation of the damper 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of a structure damping structure, and more particularly, relates to a damping structure in which a damping damper and a brace material are combined and installed in a column beam frame of a structure.

  Technologies related to the seismic control structure of structures include speed-dependent dampers such as viscous dampers and oil dampers, or hysteretic dampers such as ordinary steel and low yield point steel, etc. A technique is well known in which, by installing a damper for absorbing seismic energy, the damper follows the deformation of the column beam frame and absorbs seismic energy to reduce the response of the building (for example, Patent Document 1 and 2).

  On the other hand, as a technology related to the seismic structure of structures, by installing bracing materials such as K-type braces or eccentric K-type braces in the column beam frame, the brace material suppresses deformation of the column beam frame. Thus, a technique for preventing buckling and destruction of columns and beams is well known (for example, see Patent Document 3).

JP 2000-160873 A JP 2003-321945 A JP-A-10-131543

  As described above, since the damper and the brace material have different purposes and functions, the damper and the brace material have conventionally been installed in different column beam frame surfaces so as to achieve the respective purposes and functions. For this reason, the column beam frame of the structure is largely blocked by the installation of the damper and the brace material, and the degree of freedom in planning and designing the opening is limited.

  The object of the present invention is to install the damping damper and the brace material in the structure of the column beam frame of the structure by combining the damping damper and the brace material so that each function can be fully exhibited. The purpose of the present invention is to provide a seismic control structure for a structure that can reduce the total number of column beam frames and increase the degree of freedom in planning and designing the opening.

As a means for solving the problems of the prior art described above, as shown in FIG.
It is a seismic control structure of a structure in which a seismic damper 4 and a brace material 5 are installed in combination in a column beam frame 3 of the structure,
The damping damper 4 is installed in the substantially central part of the span of the beam 2, and the brace material 5 is arranged between the upper and lower beams 2, 2 and combined so as to restrain bending deformation of the damping damper 4. It is characterized by.

  The invention described in claim 2 is the vibration control structure of the structure described in claim 1, wherein the vibration damper 4 is a speed-dependent damper such as a viscous damper, an oil damper or the like, or ordinary steel, low yield point steel. It is characterized by being a history type damper.

  The invention described in claim 3 is the vibration control structure of the structure described in claim 1 or 2, characterized in that the brace material 5 is a buckling stiffening brace such as ordinary steel or low yield point steel. To do.

  The invention described in claim 4 is the structure damping structure according to any one of claims 1 to 3, wherein the brace material 5 has a mountain shape, an inverted mountain shape, or It is arranged in an X shape.

  According to the structure damping structure according to the present invention, the structure is installed in the column beam frame surface 3 of the structure by combining the damping damper 4 and the brace material 5 so that each function can be sufficiently exerted. The total number of installed column beam frames can be reduced as compared with the prior art in which the vibration damper 4 and the brace material 5 are installed in different column beam frame surfaces 3. On the contrary, since the number of column beam frame surfaces on which the damping damper 4 and the brace material 5 are not installed increases, the degree of freedom in planning and designing the opening can be increased.

  The structure damping structure according to the present invention is implemented as follows in order to increase the freedom of planning and designing the opening in the column beam frame of the structure.

  FIG. 1 shows an embodiment of a structure damping structure according to the first aspect of the present invention.

  The damping structure of this structure is configured by installing a damping damper 4 and a brace material 5 in combination within the frame surface 3 of the structure column 1 and the beam 2, and the damping damper 4 is composed of the beam 2. The brace material 5 is disposed between the upper and lower beams 2 and 2 and is combined so as to restrain the bending deformation of the vibration damper 4. Item 1).

  As the brace material 5 installed in the column beam frame 3, a mountain-shaped brace material 5 using ordinary steel is used, and it is arranged symmetrically between the upper and lower beams 2, 2 in the same in-plane space. is set up. Specifically, the top part 5a of the mountain-shaped brace material 5 is joined to the center part of the upper beam 2, and the two leg parts 4b and 4b are respectively connected to the lower beam 2 and a pair of left and right columns. 1 and 1 are joined to each corner portion formed.

  A so-called viscous wall damper 4 is used as the damping damper 4 to be installed in the column beam frame 3 and a flat bottom formed on the top 5a of the mountain-shaped brace material 5 in the same in-plane space. It is installed so as to stand between 5c and the lower beam 2. Specifically, this viscous body wall damper 4 is formed to be approximately 2/3 of the inside of the column beam frame surface 3, and the outer resistance plate 4 a that forms the viscous body container of the viscous body wall damper 4. Is fixed to the upper end surface of the lower beam 2 by fixing means such as welding, and the inner resistance plate 4b is fixed to the flat bottom portion 4c of the brace material 4 by fixing means such as welding. .

  In addition, although illustration is abbreviate | omitted, of course, it can also carry out by making the installation position of the said damping damper 4 and the said brace material 5 upside down. That is, it is also possible to implement by installing an inverted mountain-shaped brace material in the column beam frame surface 3 and installing a damping damper 4 between the upper surface of the brace material and the upper beam 2.

  Thus, the mountain-shaped brace material 5 is provided in combination so as to restrain the bending deformation of the viscous body wall damper (damping damper) 4 and follows the deformation of the mountain-shaped brace material 5 (interlocking). ) And the viscous body wall damper 4 is also deformed to reduce the seismic response such as shaking and deformation of the structure and absorb the seismic energy.

  Therefore, according to the damping structure of the structure having the above-described structure, if the structure (column beam frame) undergoes deformation such as shaking or interlayer deformation due to the seismic energy generated during the earthquake, The installed brace material 5 works to suppress deformation such as shaking and interlayer deformation, and at the same time, the viscous wall damper (seismic damper) 4 is also deformed, so that the structure can be shaken or deformed. It reduces seismic response and absorbs seismic energy.

  Thus, according to the structure damping structure according to the first aspect of the present invention, the viscous wall damper 4 and the brace material 5 are disposed on the column beam frame surface 3 of the structure. As a result of installing in combination so as to constrain the bending deformation of the viscous body wall damper 4, it is possible to exert the functions of the damper 4 and the brace material 5 at the same time without impairing the functions, and the above-described vibration control effect is effective. Can be demonstrated.

  Therefore, since the viscous wall damper 4 and the brace material 5 can be installed together in one column beam frame 3, the damping damper and the brace material were installed in different column beam frames. Compared to the prior art, the total number of column beam frame surfaces 3 to be installed can be greatly reduced, and conversely, the number of column beam frame surfaces 3 on which the dampers 4 and the like are not installed increases. The degree of freedom in planning and design of the department can be increased. In addition, the viscous wall damper 4 and the brace material 5 are different in the maximum stress generation of the interlayer deformation due to the difference in each configuration, so that the load acting on the beam 2 does not concentrate and increases. Reinforcement for the beam 2 is not particularly necessary or less. Further, as a secondary effect, the viscous body wall damper 4 can be implemented with about 2/3 of the conventional viscous body wall damper, so that the transportation is easy.

  Of course, the damping damper 4 is not limited to the viscous wall damper 4, but is a speed-dependent damper such as an oil damper, or a hysteretic type such as plain steel or low yield point steel as shown in FIG. It can also be implemented by the damper 14 (the invention according to claim 2). This hysteretic damper 14 is a member that can absorb seismic energy by its plastic deformation, and can be implemented in various variations. Specifically, the hysteretic damper 14 in the illustrated example is implemented by forming a part of the stud (the center in FIG. 2) with a low yield point steel (including an extremely low yield point steel) 14a.

  The material of the brace material 5 is not limited to ordinary steel, and can be implemented by a buckling stiffening brace of low yield point steel according to the structural design of the structure in consideration of the magnitude of generated seismic energy ( Invention of Claim 3). Further, the form of the brace material 5 is not limited to the mountain-shaped arrangement, and as shown in FIG. 2, the inverted mountain-shaped brace material 15 is installed in a bilaterally symmetrical arrangement with the hysteretic damper 14 as the center. You can also Of course, the brace material 15 is provided in combination so as to restrain the bending deformation of the hysteretic damper 14. In addition, as shown in FIGS. 3 and 4, the bracing members 25 and 35 having the X-shaped arrangement can be installed in a symmetrical arrangement with the hysteretic damper 14 as the center. Invention).

  By the way, when the seismic energy is input to the damping structure of the structure as shown in Fig. 2, the structure (column beam frame) tends to be deformed, such as shaking and interlayer deformation. The inverted brace material 15 installed in the column beam frame 3 works to suppress deformation such as shaking and interlayer deformation, and at the same time, the hysteretic damper (damping damper) 14 is plastically deformed. By doing so, the seismic response such as shaking and deformation of the structure is reduced and the seismic energy is absorbed.

  Although the embodiments have been described above based on the illustrated examples, the present invention is not limited to the illustrated embodiments, and design modifications and application variations that are usually performed by those skilled in the art without departing from the technical idea thereof. Note that it includes the scope of

  For example, as shown in FIG. 5, the formation of the viscous body wall damper can be performed in the same manner as the formation of the column beam frame 3. That is, the viscous wall damper 24 in the illustrated example is started up by fixing the outer resistance plate 24a forming the viscous container to the upper end surface of the lower beam 2 by a fixing means such as welding. The plate 24b is fixed to the lower end surface of the upper beam 2 with a fixing means such as welding through the steel plate 24c. In this case, the brace members 5 installed in the column beam frame 3 are mountain-shaped brace members 45, 45, and are installed in a symmetrical arrangement around the viscous wall damper 24 in the same in-plane space. ing. Specifically, the top portions 45a and 45a of the brace members 45 and 45 having the mountain-shaped arrangement are respectively joined to both ends of the steel plate 24c of the viscous wall damper 24 fixed to the center portion of the upper beam 2 span. The leg portions 45b and 45b are joined to respective corner portions formed by the lower beam 2 and the column 1 respectively.

  Compared with the embodiment shown in FIG. 1, the embodiment shown in FIG. 5 can be implemented by a high-capacity viscous wall damper (seismic damper) 24 having a higher capacity, and therefore, an even better damping. There is an advantage that the seismic effect can be demonstrated. The embodiment shown in FIG. 5 is different from the embodiment shown in FIGS. 1 to 4 above, and the axes of the brace members 45 and 45, the pillar 1 and the beam 2 do not intersect at one point. The so-called eccentric brace 45 is used. For this reason, since secondary stress is generated, a steel plate 24c for reinforcing the upper beam 2 is provided.

It is the elevation which showed the Example of the damping structure of the structure based on the invention described in Claim 1. It is the elevation which showed the Example from which the damping structure of the structure based on the invention described in Claim 1 differs. It is the elevation which showed the Example from which the damping structure of the structure based on the invention described in Claim 1 differs. It is the elevation which showed the Example from which the damping structure of the structure based on the invention described in Claim 1 differs. It is the elevation which showed the Example from which the damping structure of the structure based on the invention described in Claim 1 differs.

Explanation of symbols

1 Column 2 Beam 3 Column beam frame (inside)
4, 14, 24 Damping damper 5, 15, 25, 35, 45 Brace material

Claims (4)

A structure damping structure in which a damping damper and a brace material are installed in combination in the column beam frame of the structure,
The damping damper is installed at a substantially central portion of the beam span, and the brace material is disposed between the upper and lower beams, and is combined to restrain bending deformation of the damping damper, Seismic control structure of the structure.   2. The structure damping system according to claim 1, wherein the damping damper is a speed-dependent damper such as a viscous damper or an oil damper, or a hysteretic damper such as ordinary steel or low yield point steel. Construction.   The structure according to claim 1 or 2, wherein the brace material is a buckling stiffening brace such as ordinary steel and low yield point steel.   The structure according to any one of claims 1 to 3, wherein the brace material is arranged in a mountain shape, an inverted mountain shape, or an X shape in the column beam frame.

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