JP2000213592A - Damper device and installing work methods therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damper device and an installing work method therefor being excellent in a deform follow-up property, preventing rapid reduction of proof stress owing to buckling and the like and excessive raising of proof stress owing to hardening and the like, having general versatility according to an installing place, and facilitating construction and maintenance thereof. SOLUTION: In a damper device composed of several pieces of elastoplastic plates 1 arranged in parallel with each other, and a reaction force jig 2 supporting each both ends of the elastoplastic plates 1 and fixed to a main frame of a building or a connecting material such as a panel 5 or a frame connected to the main frame, installing holes 1a, 1b are provided on both sides of the elastoplastic plate 1 respectively, and a long bolt 4 is inserted through the installing holes 1a, 1b to closely support the elastoplastic plate 1 between the reaction force jigs 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper device for installing on a main frame of a building and damping or damping the building by utilizing its elasto-plastic hysteretic absorption energy, and a method of installing the damper.

[0002]

2. Description of the Related Art Conventionally, as a damper device of the type described above,
Although a shear panel P as shown in FIG. 7 is used, there are drawbacks such as a decrease in proof stress due to shear buckling as shown in FIG. 8, and a slit steel plate mold as shown in FIG. This damper was particularly difficult to manufacture. In addition, there is a drawback in that all must be custom-made according to the target building. Further, there is a damper device using an elasto-plastic plate similar to the elasto-plastic plate as in the present invention. However, the elasto-plastic plate is vertically or out-of-plane (horizontal direction parallel to the plane of the elasto-plastic plate). As shown in FIG. 10, in particular, as shown in FIG. 10, in order to restrain the elasto-plastic plate T from shrinking by receiving a horizontal force, so-called hardening occurs. As shown in (1), there were problems such as an increase in proof stress.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to improve deformation resistance and increase the proof stress by hardening or the like. It is an object of the present invention to provide a damper device which has high versatility according to an installation place without causing a decrease in proof stress due to bending, and which can be easily installed and maintained, and a method of installing the same.

[0004]

SUMMARY OF THE INVENTION A damper device according to the present invention supports a plurality of elasto-plastic plates arranged in parallel, both ends of the elasto-plastic plates, and a main frame of a building or a skeleton. A reaction jig fixed to a connecting member such as a connected panel or a base, in a damper device, mounting holes or mounting notches are provided at both ends of the elasto-plastic plate, respectively. Is inserted so as to be brought into close contact with the reaction force jig. Also,
At least one mounting hole of the elasto-plastic plate is a long hole in a direction where the two reaction force jigs are located. Further, a plurality of elasto-plastic plates are supported between the elasto-plastic plates and / or between the elasto-plastic plates in close contact with each other by sandwiching a filler plate between the elasto-plastic plates and the reaction jig. In addition, the present invention is characterized in that the plasticized region is configured to be clear.

[0005] Further, in the method of installing a damper device according to the present invention, the damper device having the above-described structure is grounded and fixed to an assembling jig so that the elasto-plastic plate does not rotate. To the main frame of the building or to the connecting material such as a panel or gantry connected to it, temporarily fix the other reaction force jig, remove the assembly jig, adjust the level, and then perform final tightening. It is characterized by doing.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an elastic-plastic plate made of strip-shaped ordinary steel (or an ultra-low yield point steel may be used). The material of the elasto-plastic plate 1 may be any material that absorbs seismic energy by plastically deforming when a predetermined stress is reached by seismic force. The shape (height / width / thickness) of the elasto-plastic plate 1 The number of sheets used and the number of sheets used are appropriately set according to the target attenuation capacity.

The elasto-plastic plate 1 is composed of a plurality of sheets (in this embodiment,
0) and are attached to the reaction jig 2 at the upper and lower ends thereof. In the upper and lower end mounting portions, a filler plate 3 is sandwiched between the elasto-plastic plates 1, and the plurality of elasto-plastic plates 1 are in a state in which the plastic hinge positions with increased mutual adhesion are defined. They are arranged at predetermined intervals. By appropriately finely adjusting the thickness, the number, and the mounting position of the filler plates 3, the thickness and the number of the elasto-plastic plates 1 can be finely adjusted without changing the interval between the reaction force jigs 2. . The filler plate 3 may be interposed between the elastic-plastic plate 1 at the end and the reaction jig 2.

[0008] As shown in FIG.
At the upper and lower ends, mounting holes 1a and 1b are formed, through which long bolts 4 as tension members are inserted, and which are pressed against the upper and lower reaction jigs 2 respectively. The reaction jig 2
Is connected by a shear bolt 6 to a panel 5 fixed to a structural member (in this embodiment, a beam of a building) that generates horizontal vibration during an earthquake. As shown in FIG. 3A, one or both of the reaction force jigs 2 may be joined to the beam 7 (or the gantry) by the pull bolt 8. FIG.
In (B), reference numeral 2a denotes an adjusting plate, and the required number of the adjusting plates may be sandwiched between the reaction force jig 2 and the beam 7 to finely adjust the fixed height position of the reaction force jig 2.

One or both of the mounting holes 1a and 1b of the elasto-plastic plate 1 (the mounting hole 1a at the upper end in the present embodiment) has a long length in the longitudinal (axial) direction of the strip-shaped elasto-plastic plate 1. As shown in FIG. 2 (B), the upper and lower reaction jigs 2 and 2 rotate in response to the movement of the upper and lower reaction jigs 2 and 2 in a direction outside the plane of construction (horizontal direction parallel to the surface of the elasto-plastic plate 1). As a result, not only is the force not transmitted to the elasto-plastic plate 1, but also FIG.
When the elasto-plastic plate 1 is deformed by the horizontal force in the in-plane direction (horizontal direction perpendicular to the surface of the elasto-plastic plate 1) during an earthquake as shown in FIG. Because
As shown by the arrow, the vertical force is not transmitted to the elasto-plastic plate 1 by sliding in the vertical direction.
Hardening of the elasto-plastic plate 1 is effectively prevented.

The mounting hole 1b is an elongated hole opened in the lateral direction (the direction perpendicular to the axial direction of the elasto-plastic plate 1). As shown in FIG. The lower part can be swung laterally and removed from the long bolt 4 below.

Further, since the above-mentioned mounting hole 1a has a long hole extending in the axial direction of the elasto-plastic plate 1 as described above, which is opened at the upper end of the elasto-plastic plate 1, the lower portion is swung laterally to remove the long bolt. As shown in FIG. 1E, the elastoplastic plate 1 removed from
It can be completely removed. Therefore, the plastically deformed elastic-plastic plate 1 can be easily and quickly replaced with a new one at the time of a large earthquake or the like.

Since the damper device of the present embodiment is constructed as described above, the elasto-plastic plate 1 and the reaction jig 2 come into contact with each other and a slight frictional force acts. Since the horizontal force is transmitted only in the in-plane direction (the direction perpendicular to the surface of the elasto-plastic plate 1), as shown in FIG.
When a seismic force acts on the building, as shown in FIG. 5, a horizontal force acts between the upper and lower reaction jigs 2, and the elasto-plastic plate 1 is deformed.

When the amount of movement of the horizontal force between the reaction jigs 2 and 2, ie, the amplitude, is small, the elasto-plastic plate 1 is elastically deformed. When the horizontal movement amount of 2, 2 increases, the bending stress of the elasto-plastic plate 1 particularly at the hinge portion 1c (the portion near the attachment portion where the deformation is large) increases, causing the plastic deformation beyond the elastic limit value. . The seismic energy is absorbed by the plastic deformation of the elasto-plastic plate 1, and as a result, damage to the structure such as the main frame of the building is reduced.

Next, a method of installing the damper device of the above embodiment on a main frame of a building will be described. First, before attaching to the main frame, the elastic-plastic plate 1 and the reaction force jig 2
Are fastened by long bolts 3 to make a ground. Subsequently, as shown in FIG. 6, the elasto-plastic plate 1 and the reaction jig 2 assembled in the above-described manner are out of the construction plane (direction parallel to the surface of the elasto-plastic plate 1).
Is fixed to the assembly jig 9 with screws or the like so as not to rotate.

Next, the set elastic-plastic plate 1, reaction force jig 2, and assembly jig 9 are joined to the lower panel 5 (or a beam or a gantry). The level is adjusted by the level adjusting support material 10 while being temporarily fixed to the upper panel 5 (or the beam or the gantry).

Thereafter, the assembling jig 9 is removed, and the upper panel 5 (or a beam or a gantry) and the reaction force jig 2 are fully tightened and joined. Finally, the level adjusting support material 10 is removed to complete the installation.

[0017]

1) The elasto-plastic plate, which is a main component of the damper device of the present invention, is configured not to be affected by the vertical and horizontal orthogonal forces. Compared with this, deformation followability is improved, and a stable function can be exhibited. 2) The required energy absorption capacity differs for each building and for each story even in the same building. However, the damper device of the present invention has a shape such as the material of the elasto-plastic plate and the thickness and height of the plate. Or, just by adjusting the number of attachments, the energy absorption capacity can be set or changed very easily.
Has high versatility. 3) The thickness of the elasto-plastic plate can be changed without changing the distance between the reaction force jigs by interposing a filler plate between each elasto-plastic plate or between the elasto-plastic plate at the end and the reaction force jig. And the number of sheets can be changed, and the versatility can be improved. 4) An elastic-plastic plate that has been plastically deformed can be replaced very easily and quickly, and an apparatus excellent in maintenance can be provided. 5) Easy and quick installation in existing buildings.

[Brief description of the drawings]

FIG. 1 is a front view (A) and a side view (B) showing one embodiment of a damper device of the present invention.

FIG. 2 is a diagram illustrating the configuration and operation of an elastic-plastic plate.

FIG. 3 is a front view (A) and a partial explanatory view (B) showing another mounting example of the damper device of the present invention.

FIG. 4 is an explanatory diagram showing shaking of a building due to an earthquake.

FIG. 5 is a diagram illustrating behavior of a building due to an earthquake.

FIG. 6 is an explanatory view of an installation method of a damper device.

FIG. 7 is an explanatory diagram of a conventional damper device.

FIG. 8 is a graph showing a decrease in proof stress of the shear panel shown in FIG. 7;

FIG. 9 is an explanatory view of another conventional damper device.

FIG. 10 is an explanatory diagram of hardening of a shear panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic-plastic board 1a, 1b Mounting hole 1c Hinge part 2 Reaction jig 3 Filler plate 4 Long bolt 5 Panel 6 Shear bolt 7 Beam 8 Pull bolt 9 Assembly jig 10 Level adjustment support material F Horizontal force

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Youichi Fukuoka 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. F-term (reference) 3J048 AC01 AC05 AC06 BC09 BD08 DA03 EA38 3J066 AA26 BA04 BB01 BC03 BC05 BD07

Claims (4)

[Claims] 1. A plurality of elasto-plastic plates arranged in parallel,
A reaction jig fixed to the main frame of the structure and to a connecting member such as a panel or a gantry connected to the main frame of the building and supporting the both ends of the elasto-plastic plate. A damper device, wherein a mounting hole or a notch for mounting is provided at each end of the plate, and a tension member is inserted into the mounting hole so as to be in close contact with the reaction force jig. 2. The damper device according to claim 1, wherein at least one of the mounting holes of the elasto-plastic plate is a long hole in a direction in which the two reaction force jigs are located. 3. A plurality of elasto-plastic plates are closely contacted between the reaction force jigs with a filler plate interposed between the elasto-plastic plates and / or between the elasto-plastic plate and the reaction force jig. ,
The damper device according to claim 1 or 2, wherein the plasticized region is configured to be clear. 4. The one damping device according to claim 1, 2 or 3, wherein said damper device is fixed to an assembling jig so that said elasto-plastic plate does not rotate, and one of said reaction force controlling members is fixed. After joining the fixture to the main frame of the construction or to the connecting material such as a panel or a gantry connected to it, temporarily fixing the other reaction force jig, removing the assembly jig and adjusting the level Installation method of damper device characterized by tightening.