JP5348860B2 - Damping structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damping structure which is constituted by building a damping device into a column-beam frame of a structure with a highly rigid layer, such as a megastructure, and which can efficiently reduce response to a new or existing structure without deterioration in usability in a relatively freely arranged state by using the damping devices such as a small number of dampers. <P>SOLUTION: In the megastructure, deformation is suppressed by a highly-rigid mega-truss beam 2, and story deformation becomes great on a plurality of stories near the intermediate stories between the mega-truss beam 2 and the mega-truss beam 2 or the ground. Thus, the dampers 10 are arranged in a concentrated manner on one or more specific stories among the intermediate stories. The damper 10 is provided in a brace member 12 which is arranged between strut members 11 for connecting upper and lower beams 3 together, so as to absorb energy. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a vibration control structure constructed by incorporating a vibration control device in a column beam frame of a structure having a high rigidity layer, and is effectively applied to a mega-structure super high-rise building or the like.

  As a method for arranging dampers of the vibration control structure, it is common to arrange from the lower floor to the middle floor continuously or the top floor.

  On the other hand, as a method of distributing and arranging the dampers in the height direction, there is a technique described in Patent Document 1, for example.

(1) Damping structure of Patent Document 1 This invention concentrates the damping device near the height position that becomes the node of a predetermined low-order natural vibration mode (primary to tertiary mode, etc.) of a high-rise building. It is arranged. The position of the node in this vibration mode is a position where a large shear force is generated, and in a multi-layer structure, the position where the movement between the layers is the largest. By concentrating the vibration damping device at this position, it is evenly distributed Compared with the case where it makes it, efficient damping can be performed with a small number of damping devices.

  In addition, as a vibration control method for the megastructure structure, for example, there are techniques described in Patent Documents 2 and 3.

(2) Damping method for super-high-rise building of Patent Document 2 This invention is a megastructure composed of super-large beam-columns and super-large beam beams, with dampers installed along each brace material of the super-large beam beams. Is. The brace material is more effective than the pillar material for the part where the damper is placed, and the brace material that makes up the super-large braid is particularly effective among the braces. Can be done with a simple damper.

(3) Seismic control building of Patent Document 3 This invention uses a megastructure consisting of megacolumns and megabeams as the main frame, supports the rim of the slab on each floor inside, and provides a seismic control device on the megacolumns. The mega pillar is composed of two thin pillars arranged side by side, and a brace damper is installed as a vibration control device between these thin pillars, and the slabs on each floor are suspended and supported from the top of the megastructure by the suspension pillars. . The installation space for the vibration control device can be secured without sacrificing the effective area.

Japanese Patent Publication No. 7-51858 JP-A-8-86118 JP 2001-90375 A

  When conventional dampers are continuously arranged in the height direction, the number of dampers increases, the applied stress acting on the structural members around the dampers increases, and further interferes with the building plan, resulting in freedom of design. Is often impaired.

  Further, as in the invention of Patent Document 1, when the vibration control devices are distributed and arranged in the vibration mode nodes, in the mega structure, the mega beam layer and the vibration mode nodes may coincide. Since the mega beam layer is very rigid and the interlayer deformation is small, in the case as described above, the damper arrangement is not efficient. Furthermore, in existing buildings, the possibility of placing a damper at the position of a vibration mode node is often difficult from the viewpoint of ease of use, and it cannot be said to be a realistic response.

  Furthermore, in order to efficiently absorb energy in the damper and reduce the response, it is necessary to concentrate deformation on the damper. However, the vibration damping method for the megastructure described in Patent Document 2 is Since the damper is arranged along the brace material with high rigidity of large beams, the energy absorption efficiency is a poor plan.

  The present invention has been made in order to solve the above-described problems, and in a damping structure constructed by incorporating a damping device in a column beam frame of a structure having a high-rigidity layer such as a megastructure. With a small number of dampers and other damping devices, we provide a damping structure that can reduce response efficiently to new or existing structures with a relatively free arrangement and without sacrificing ease of use. To do.

The invention of claim 1 of the present invention is a seismic control structure constructed by incorporating a seismic control device in a column beam frame of a megastructure structure having a high rigidity layer made of mega truss beams. Are connected in a horizontal direction and integrated in a plane, and a layer at a middle position between the high-rigidity layer and the high-rigidity layer having a large interlayer deformation or the high-rigidity layer and the ground. There are few by providing the layer which does not arrange the vibration control device in the layer of the middle position between the upper and lower beams of the middle position layer. It is a seismic control structure characterized in that the damping is efficiently increased by a number of seismic control devices.

  In a structure with a high rigidity layer, deformation is suppressed by the high rigidity layer, so as shown in FIGS. 1 and 2, a vibration control device is arranged between the high rigidity layer and the high rigidity layer (or the ground). Select possible floors and place the vibration control devices in a single layer or multiple layers. In the layer where the vibration control device is arranged, the vibration control device may be partially arranged at the center or end in the horizontal direction, or may be arranged continuously in the horizontal direction.

  In a structure with a high-rigidity layer, interlayer deformation increases in multiple layers near the intermediate layer between the high-rigidity layer and the high-rigidity layer (or the ground). Efficient seismic control is possible.

  In the megastructure structure, deformation is suppressed by the high-strength megatruss beam, and the interlayer deformation increases in multiple layers near the intermediate layer between the megatruss beam and the megatruss beam (or the ground). The present invention can be applied effectively.

According to a second aspect of the present invention, there is provided the vibration control structure according to the first aspect, wherein the vibration control device is a damper that is connected to the earthquake resistant element and absorbs energy. is there.

  For example, a pair of left and right bundle members are arranged on the upper and lower beams of the intermediate layer, and a brace member is arranged between the bundle members. An active damper such as an oil damper (see FIG. 1) or a variable oil damper is arranged on the brace. It is preferable to provide an apparatus (see FIG. 2) and absorb energy by such a vibration control mechanism.

  In the present invention as described above, a small number of dampers and the like are controlled by intensively arranging dampers and other dampers in a single layer or a plurality of layers in the vicinity of an intermediate layer having a large interlayer deformation such as a high-rigidity layer. Damping can be increased efficiently with a seismic device. Further, the vibration control device can be arranged relatively freely, and the usability of the building is not deteriorated. In addition, the workability is significantly improved as compared with the case where the vibration control device is continuously arranged in each layer.

  Since the present invention is configured as described above, the following effects can be obtained.

  (1) Efficient damping is achieved with a small number of dampers such as dampers by allocating dampers such as dampers intensively in a single layer or multiple layers near the middle layer where the interlayer deformation is large, such as high rigidity layers. This makes it possible to efficiently control seismic vibrations at low cost in newly built or existing mega structures.

  (2) The vibration control device can be arranged relatively freely, the design freedom is not impaired, and the existing structure can be easily controlled. Moreover, the usability of the building is not reduced.

  (3) Compared to the case where the vibration control device is continuously arranged in each layer, the workability is remarkably improved and the construction cost can be reduced.

  Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 is an elevational view showing various forms when the present invention is applied to a megastructure. FIG. 2 is an elevation view showing a more specific example.

  In FIG. 1, the main structure of the mega structure is composed of a mega pillar 1 and a mega truss beam 2 which is a high rigidity layer, and a beam 3 is arranged on each floor. In FIG. 1 (a)-(c), the mega truss beam 2 is arrange | positioned at the top part and intermediate part of a building. In FIG.1 (d), the mega truss beam 2 is arrange | positioned only at the top part of a building. The mega truss beam 2 is composed of upper and lower beams 3 and a brace material 4 therebetween. In FIGS. 1A and 1B, the brace material 4 is also disposed between the left and right columns 1a in the mega column 1 as well.

  In such a megastructure, the interlayer deformation becomes large in the intermediate portion between the mega truss beam 2 and the mega truss beam 2 or in the intermediate portion between the mega truss beam 2 and the ground. Alternatively, the dampers 10 are intensively arranged in a plurality of layers.

  In FIG. 1, a brace material 12 is disposed between a pair of left and right bundle members 11 that connect the upper and lower beams 3, and a damper 10 is provided on the brace material 12. In FIG. 1A, the vibration control device using the damper 10 is arranged in the center between the mega pillars 1. In FIG.1 (b), the damping mechanism by the damper 10 is arrange | positioned at zigzag form in two upper and lower layers. In FIG.1 (c), the damping mechanism by the damper 10 is continuously arrange | positioned between the mega pillars 1 in one layer. In FIG. 1 (d), the vibration control mechanism by the damper 10 is also arranged in the mega pillar 1.

  The damper 10 may be of any type as long as the damper absorbs energy. An oil damper or the like is one that efficiently absorbs energy.

  In the example of FIG. 2, an active vibration control device 10 ′ such as a V-shaped brace 12 and a variable damper is used, and this is arranged in the middle of one or two layers at an intermediate position between the mega truss beams 2.

  In the present invention as described above, the attenuation of the megastructure can be effectively increased only by installing one or a plurality of dampers 10 between the mega truss beams 2 and the like. Moreover, arrangement | positioning of damper 10 grade | etc., Can be selected comparatively freely, and the usability of a building is not reduced. In addition, since the damper 10 and the like are partially installed, workability is significantly improved.

  Needless to say, the present invention is not limited to the illustrated examples.

It is an elevation view which shows various forms at the time of applying this invention to a megastructure. It is an elevation view showing a more specific example of the present invention.

Explanation of symbols

1 ... Mega pillar 1a ... Pillar 2 ... Mega truss beam 3 ... Beam 10 ... Damper (damping device)
10 '... Variable damper (active vibration control device)
11 …… Bundle material 12 …… Brace material

Claims (2)

It is a seismic control structure constructed by incorporating a seismic control device in a column structure of a megastructure structure with a high rigidity layer composed of mega truss beams, and the beams of each layer constituting the column structure are horizontally oriented. The intermediate layer in the intermediate layer between the high-rigidity layer and the high-rigidity layer that is connected and integrated in a plane and has large interlayer deformation, or the intermediate layer between the high-rigidity layer and the ground Efficient damping is achieved with a small number of seismic control devices by arranging the seismic control devices in one or more layers in a concentrated manner between the upper and lower beams of the position layer and providing a layer that does not arrange the seismic control devices A seismic control structure characterized in that   2. The damping structure according to claim 1, wherein the damping device is a damper that is connected to a seismic element and absorbs energy.

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