JP2002285656A - Architectural design wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the aseismatic capacity of an architectural design wall without imparing its designability. SOLUTION: When seismic power is input in a building frame including a pillar 2 and beam 3, the vibration energy generated by the seismic power is transmitted from beams 3, 3 in upper/lower floors to the architectural design wall 10. The vibration power is transmitted sequentially through a horizontal joint of viscous elastic body 16 to architectural design block groups 13 formed by attaching architectural design blocks 12 to the building frame via a vertical joint of mortar 14. At this time, the viscous elastic body 16 deforms, which causes a horizontal relative displacement between the architectural design block groups 13 adjacent to an upper/lower position, wherein the extent of relative horizontal displacement increases as the position of the design block groups 13 gets higher, due to the deformation of the viscous elastic body 16. As a result, the hysteretic damping occurs between the beam 3 and the architectural design wall 10 increases, absorbing the vibration energy further, and suppresses the deformation of the building frame comprising the pillar 2 and the beam 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a design wall having design blocks of various shapes arranged in a mosaic pattern.

[0002]

2. Description of the Related Art Conventionally, glass blocks having excellent heat insulation properties, light transmission properties or sound insulation properties have been used as materials for forming the walls of buildings and the like. A construction method in which a seam is finished with a cosmetic joint and assembled is generally adopted. Since the method requires time and skill, various methods for improving the workability are also known. For example,
No. 22, when assembling the glass block,
A method of interposing a cross-shaped hard elastic body smaller than the width of a glass block between the blocks is described. However, this method is intended to improve workability when stacking glass blocks, and no consideration is given to reducing vibrations received from an earthquake or the like.

JP-A-5-230899 discloses that a plurality of rectangular glass blocks are arranged in a grid pattern in order to improve the strength of a glass block wall and to facilitate its construction. In the meantime, a tension member in which prestress is introduced is arranged along each side direction of the glass block aggregate including the entire glass block, and the tension member is arranged for each even joint or odd joint of the glass block, and There has been proposed a glass block wall in which an elastic member is interposed between adjacent glass blocks. However, the glass block wall reduces the tensile stress applied to the glass block by introducing a prestress by a tendon. Also,
Since the glass block wall has an elastic member interposed between the adjacent glass blocks, it is considered that a buffering effect of the transmission stress acts between the vertically adjacent glass blocks. In between,
The vibration damping effect does not work effectively, and no seismic control measures are considered.

Conventionally, damping walls are generally attached to beams on the upper and lower floors via brackets. However, a design wall having a damping performance without impairing the design property is known. unknown.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a design wall having improved vibration damping performance without impairing the original design of the design wall.

[0006]

SUMMARY OF THE INVENTION The present invention provides a design wall in which design blocks are arranged in a mosaic shape, and the design blocks are bonded using a viscoelastic body having lower initial rigidity than the design blocks as horizontal joints. It is characterized by the following. The viscoelastic body preferably has an equivalent viscous damping constant of 15% or more. It is preferable to provide a frame on the outer periphery of the design block assembly arranged in a mosaic shape.
It is preferable that a gap of at least 1 cm or an elastic material having a thickness of at least 1 cm is interposed between the vertical member constituting the frame and the design block facing the vertical member.

[0007]

When a seismic force acts on a building in which the above-mentioned design wall is incorporated, the vibration energy due to the seismic force is used to separate the individual design blocks from the beams on the upper and lower floors through a viscoelastic body which is a horizontal joint by a mortar which is a hard body. Since the design blocks are successively transmitted to the attached design blocks, the design blocks undergo horizontal relative displacement due to deformation of the viscoelastic body between the design blocks and the design blocks adjacent above and below. This relative displacement increases in the design block group in the upper layer due to the deformation of the viscoelastic body serving as the horizontal joint. As a result, hysteresis attenuation between the beam and the design wall is amplified, and vibration energy is further absorbed. As a result, deformation of the entire building is suppressed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view partially showing a main part of a design wall, and a design wall 10 is installed in a structure surrounded by pillars 2 and beams 3 of a building. The design wall 10 is one in which square design blocks 12 are arranged in a mosaic shape. A decorated block. Therefore, for example, a design block in which a marble plate is adhered to an open end of a ring-shaped square steel pipe is also included. The shape of the design block 12 may be a diamond, a circle, an ellipse, or any other shape other than a square, and is not particularly limited as long as the shape allows a horizontal joint to be described later to pass.

The vertical joint between the design blocks 12, 12 is as follows:
Adhered by a conventionally used mortar 14, the adjacent design blocks 12, 12,... Are integrated in the horizontal direction. As the vertical joint, other than mortar, any synthetic resin, hard rubber or the like having a higher initial rigidity than a horizontal joint described later can be used. On the other hand, the horizontal joint between the design blocks 12 and 12 is bonded by an adhesive via a viscoelastic body 16 having lower initial rigidity than the design block 12. The viscoelastic body 16 is an object made of a material having both the viscous property of keeping the speed at zero and the elastic property of trying to return to the original state when subjected to deformation. Superplastic rubber or high damping rubber having the property of being plastically deformable up to large strain, for example,
Silicone rubber, acrylic rubber, urethane rubber,
And the like. In addition, as the adhesive for the viscoelastic body 16, an adhesive that is generally used for a glass block or the like can be used.

The equivalent viscous damping constant of the viscoelastic body is preferably 15% or more. If it is 15% or more, the effect of reducing the vibration of the whole building due to the hysteresis attenuation is sufficiently recognized.
As is well known, the equivalent viscous damping constant (h _eq ) is expressed by the ratio between the hysteresis area _Ah and the elastic potential energy _Ae generated in the relationship between horizontal force and horizontal deformation, and is defined by the following equation. h _eq = (1 / 4π) · A _h / A _e

In the present invention, when a seismic force is input to the building frame including the columns 2 and the beams 3, the vibration energy due to the seismic force is applied to the design wall 10 constituted by the design blocks 12 from the upper and lower beams 3, 3. Is transmitted to In the design wall 10, the vibration energy is applied to the individual design blocks 12.
On the other hand, since the design blocks 12 are successively transmitted from the viscoelastic body 16 which is a horizontal joint to the design block group 13 stuck by a mortar 14 which is a vertical joint, the design block group 13 is vertically adjacent to the design block group 13. Design blocks 13
And a horizontal relative displacement is caused by the deformation of the viscoelastic body 16. This relative displacement is caused by the viscoelastic body 16 which is a horizontal joint.
, The design block group 13 in the upper layer is increased. Thereby, the hysteresis attenuation between the beam 3 and the design wall 10 is amplified, and the vibration energy is further absorbed. As a result, the deformation of the building frame composed of the columns 2 and the beams 3 is suppressed. The viscoelastic body 16 does not necessarily need to be provided on all the horizontal joints of the design wall 10.

In the preferred embodiment shown in FIG. 1, a design wall 10 is formed by surrounding the outer periphery of an aggregate of design blocks 12, 12,... With a metal frame 20 made of steel, stainless steel, aluminum steel, or the like. I have. The frame 20 includes a horizontal member 21 and a vertical member 22, and the horizontal member 21 and the facing design block 12 are connected via the viscoelastic body 16 described above. The design block 1 facing the vertical member 22
In consideration of the movement and deformation during the earthquake, the vertical member 22 and the facing design block 12 do not need to be in contact with each other. It is preferable to provide a gap of 1/20 or more, generally at least about 1 cm. Further, it is preferable that a natural rubber elastic material 18 is interposed in this gap.

The design wall 10 provided with the metal frame 20 is manufactured in a factory or the like, carried into a site, and set on a construction surface surrounded by columns 2 and beams 3. FIG. 2A is a plan view cut along the line aa of FIG. 1, and FIG.
FIG. 4 is a plan view cut along line b. Referring to these drawings, the structure of the joint between the design wall 10 and the building frame will be described.
Both are fixed via a stat bolt 25 protruding from a channel steel 24 constituting the frame 20 of the design wall 10 and a post-installed anchor 26 provided on the column 2 and the beam 3.
As a procedure for attaching the design wall 10, a post-installation anchor 26 is provided in advance on the beam 3 (and the column 2), and after the frame 20 is installed, the space between the frame 20 and the beam 3 (and the column 2) is provided. The spiral muscle 27 is arranged. Finally, by injecting the mortar 28, the frame 20 can be fixed in the plane.
Since the vibration energy due to the seismic force is mainly transmitted from the beam 3, it is necessary to fix the frame 20 to the beams 3 on the upper and lower floors. Is optional.

The factory-made design wall provided with the metal frame 20 is attached to the building frame as described above. However, when the design blocks 12 are piled up at the site and constructed, the above-mentioned horizontal joints are used. Design block 12 using viscoelastic body 16 and mortar 14 as vertical joints.
Should be adhered individually.

[0015]

According to the design wall of the present invention, the vibration energy acting on the building at the time of an earthquake can be attenuated by a horizontal joint without hysteresis, without impairing the original design property of the design block, and the building wall can be operated. The effective seismic force can be reduced. Further, the design block is not damaged or damaged during an earthquake. Therefore, it can be applied to various types of buildings as a design wall having an excellent appearance and having a vibration control performance. The design wall according to claim 2 has further excellent vibration control performance. The design wall according to the third aspect can be manufactured in a factory, and the work of attaching and installing the design wall to the frame is extremely easy. The design wall according to claim 4 is particularly hard to be damaged by an earthquake and has excellent vibration control performance.

[Brief description of the drawings]

FIG. 1 is a front view partially showing a main part of a design wall of the present invention.

2 (a) is a plan view cut along the line aa of FIG. 1, and FIG. 2 (b) is a plan view cut along the line bb of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Design wall 12 Design block 14 Mortar which is a vertical joint 16 Viscoelastic body which is a horizontal joint 18 Elastic material 20 Frame 21 Horizontal member 22 Vertical member

Claims (4)

[Claims] 1. A design wall in which design blocks are arranged in a mosaic shape, wherein the design blocks are bonded by using a viscoelastic body having a lower initial rigidity than the design blocks as horizontal joints. 2. The viscoelastic body has an equivalent viscous damping constant of 15
% Of the design wall according to claim 1. 3. A mosaic-like design block assembly having a frame on the outer periphery thereof.
Design wall described. 4. At least 1 cm between a vertical member constituting the frame and a design block facing the vertical member.
4. The design wall according to claim 3, wherein an elastic material having a thickness of at least 1 cm is interposed.