JP2006257687A - Vibration damping-seismic response control pedestal structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize both the vibration damping and the seismic response control of a building by a simple and compact structure. <P>SOLUTION: A vertically passing through-hole 4 is formed in the upper plate 3a of a base 3, and a thick plate 5 with an upper surface side larger than the through-hole 4 is installed on the lower surface of the upper plate 3a. The thick plate 5 is connected to a column 1 through the through-hole 4, and a viscous material or a viscoelastic material 7 for vibration damping is interposed between the thick plate 5 and the base upper plate 3a. The base upper plate 3a is so formed that is yielded in preference to the column 1 to provide a seismic response control action. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vibration damping-damping column base structure.

  Various technologies for controlling buildings against large earthquakes such as large earthquakes have been provided in the past, and technologies for suppressing buildings against small vibrations such as traffic vibrations are also available. Various types have been provided.

  However, it is still impossible to find out the facts that have been provided regarding the vibration control technology that can realize both vibration control and vibration control with a simple and compact structure.

  This invention makes it a subject to provide the structure which can implement | achieve both the vibration suppression of a building and vibration suppression with a simple and compact structure in this technical background.

The above-described problem is that a through-hole penetrating in the vertical direction is provided in the upper plate of the base, and a retaining material having a larger planar size than the through-hole is disposed on the lower surface side of the upper plate. The pillar is connected through the through hole,
A damping material or a viscoelastic material for damping is interposed between the retaining material and the base plate, and
It is solved by a damping-damping column base structure in which either one or both of the retaining material and the base plate are yielded in advance of the column to perform the damping action. .

  With this structure, small vibrations such as traffic vibrations are controlled by deformation of the viscous material or viscoelastic material when the retaining material and the base plate approach and leave, and a large earthquake For such a large vibration, either one or both of the retaining material and the base plate yield before the pillar, and the vibration is controlled.

  Of the retaining material used for damping, the viscous material or the viscoelastic material, and the base plate, the retaining material and / or the base plate are used in combination as a member for damping. Therefore, both vibration control and vibration control can be realized with a simple structure. In addition, by adopting the above-described column base portion incorporation mode as the damping / damping structure portion, the damping / damping structure portion can be compactly incorporated into the building.

  Since the present invention is as described above, both vibration control and vibration control of a building can be realized with a simple and compact structure.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  In the vibration-damping column base structure of the embodiment shown in FIG. 1, 1 is a steel column, 2 is a foundation, 3 is a base, and the base 3 includes an upper plate 3 a that connects the columns 1. The base upper plate 3a is provided with through holes 4 penetrating in the vertical direction in the plane, and a steel thick plate as a retaining material having a larger planar size than the through holes 4 on the lower surface side of the base upper plate 3a. 5 is installed, the thick plate 5 and the column 1 are connected by a leg 6 through the through hole 4, and a viscous damping material or viscoelastic material 7 is interposed between the thick plate 5 and the base upper plate 3a. Has been. The base plate is made of, for example, extremely low yield point steel. When a large pulling force or compressive force acts on the column 1, it yields before the column 1 and plasticizes to absorb energy. It is made to perform a vibration control action.

  In the above-described vibration-damping column base structure, as shown in FIG. 2 (a), with respect to small vibrations such as traffic vibrations, the viscosity due to the approach and separation between the thick plate 5 and the base upper plate 3a. The vibration is suppressed by the deformation of the material or the viscoelastic material 7, and as shown in FIG. 2 (c), the base upper plate 3a precedes the column 1 for a large vibration such as a large earthquake. Surrender and control the vibration.

  Then, the viscous material or viscoelastic material 7 between the thick plate 5 and the base upper plate 3a is completely or almost completely crushed so that the thick plate 5 contacts the base upper plate 3a, but does not yield the base upper plate 3a. As shown in FIG. 2 (b), the column base portion has a high rigidity and resists such vibrations or vibrations.

  According to the above-described vibration damping-damping column base structure, the base plate 3a is controlled among the thick plate 5, the viscous material or viscoelastic material 7, and the base plate 3a used for vibration control. Since the structure is used as a member for earthquakes, both vibration control and vibration control can be realized with a simple structure, and because it is built into the column base, the vibration control-damping structure The part can be incorporated into the building compactly. In addition, the parts to be replaced in the event of an emergency such as a major earthquake are the base plate 3a or the base 3, and the viscous material or viscoelastic material 7. The parts to be replaced are clear and easy to deal with.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where the base plate 3a yields before the column 1 is shown. However, the retaining material may yield before the column, Both the material and the base plate may yield before the column.

  In the above embodiment, the case where the base 3 is made of a piece is shown. However, as long as the base 3 includes an upper plate portion, a long base may be used. It is recommended that the side of the material yield before the pillar.

  Furthermore, the term “column” in the present invention should be interpreted in the meaning including an outer wall panel frame having a vertical frame, and is not limited to the original column, and also includes a column, foundation, and retaining material. There are no restrictions on the material.

Fig. (A) is a cross-sectional front view showing the vibration damping-damping column base structure of the embodiment, Fig. (B) is an enlarged cross-sectional front view of the main part, and Fig. (C) is a column and a thick plate as a retaining material. It is a perspective view which shows a relationship. Drawing (a)-figure (C) are principal part section front views showing an operation state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pillar 3 ... Base 3a ... Base board 4 ... Through-hole 5 ... Thick board (prevention material)
7. Viscous material or viscoelastic material

Claims (1)

A through-hole penetrating in the vertical direction is provided in the upper plate of the base, and a retaining material having a plane size larger than the through-hole is disposed on the lower surface side of the upper plate, and the retaining material and the column are through-holes. Connected through
A damping material or a viscoelastic material for damping is interposed between the retaining material and the base plate, and
A damping-damping column base structure, wherein either one or both of the retaining material and the base plate yields prior to the column to perform a damping action.

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