JPH1162316A - Earthquake resistive damping construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb vibration energy during a great earthquake, and lessen the deformation of a construction by setting a plurality of constructions side by side, and interposing a damper between respective constructions for joining them. SOLUTION: The earthquake resistive construction is a double-construction comprising an inner construction A being circular in its plane and a concentric outer construction B being located at predetermined distances outside of the Inner construction A; then dampers D are interposed between the circular constructions A, B in desired positions. The inner construction A is formed into a super rahmen structure constructed from a plurality of frame layers including pillars 1, beams 2 or truss beams, and a floor or the like. The outer construction B is formed into a lofty layer rahmen structure of an RC construction, steel frame construction, or steel work bar-reinforced concrete construction made of a plurality of skeleton layers including pillars 6, and beams 7, the floor 9, and so on. Since the inner construction A is made to have larger rigidity or weight in its frame than that of the inner structure B, and further dampers are interposed between both constructions A, B, shake is damped extremely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic vibration control structure, and is applied to buildings from low to high.

[0002]

[Prior art]

<A> Conventional seismic structures are columns in a single structure,
An earthquake-resistant member such as a wall is a structure that absorbs and resists vibration energy during an earthquake. <B> Conventional vibration damping structures are columns in a single structure,
A structure in which a vibration damping member is provided in addition to an earthquake-resistant member such as a beam or a wall, and the vibration-damping member yields earlier than other earthquake-resistant members during a large earthquake, thereby absorbing and resisting vibration energy.

[0003]

[Problems to be solved by the invention]

<A> Conventional seismic structures have vibration energy during large earthquakes.
Excessive absorption of plastics can lead to increased plastic deformation of columns, beams, and walls, causing damage and loss of the ability to support vertical loads, eventually leading to collapse. <B> Conventional vibration damping structures use vibration energy during a large earthquake.
When the damping member yields due to the absorption of the vibration and the damage occurs, it is necessary to replace the damping member.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the present invention provides a structure in which a damper is interposed between structures having different natural periods to provide vibrations during a large earthquake. An object of the present invention is to provide a structure having both earthquake resistance and vibration suppression, which absorbs energy and reduces the deformation of the structure.

[0005]

In order to achieve the above object, a seismic vibration damping structure according to the present invention comprises a plurality of structures arranged side by side, and a damper interposed between each structure. And an internal structure located at the center,
It consists of a double structure with an external structure on the outside, and is connected by interposing a damper between both structures. It is.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

<B> Structure, structure, structure, and structural relationship of members A structure is composed of a plurality of juxtaposed structures, or a double structure of an internal structure and an external structure.
It is composed of a skeleton composed of members such as beams and walls. Each of the above structures employs various types of structures such as a flat slab structure and a wall type structure in addition to a frame structure including columns and beams, that is, a frame structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. <B> Embodiment of Seismic Damping Structure (1) The seismic damping structure shown in FIGS. 1 and 2 has an inner structure A having a circular planar shape and a predetermined space outside the structure A. And a concentric external structure B located at the position where the damper D is interposed between the two structures A and B. The internal structure A is a super-ramen structure composed of a frame of a plurality of layers (six layers in the drawing) composed of columns 1, beams 2, or truss beams, a floor 4, and the like. The frame of the structure A is a steel frame, a steel reinforced concrete structure, or a prestressed concrete structure. External structure B
Is a high-rise frame structure of an RC structure or a steel frame structure or a steel-framed reinforced concrete structure composed of a frame of a plurality of floors (12 floors in the figure) composed of columns 6 and beams 7 and a floor 9 and walls. That is, the inner structure A has a higher stiffness or weight of the frame than the outer structure B. Therefore, the two structures A and B have different vibration characteristics, that is, their inherent periodic characteristics, so that each of the structures A and B has a different characteristic during an earthquake. The two structures A, which show different vibration properties,
Vibration is remarkably attenuated by the interposition of the damper D between B. The external structure B is an apartment house, a hotel, a ward, a school building, etc., and the internal structure A is a common part for them, for example, stairs, elevators and other elevating facilities, various utilities. It is a core space used for applications such as gardens, open spaces, etc.

<C> Embodiment of Seismic Vibration Suppression Structure (2) The seismic vibration suppression structure shown in FIGS. 3 and 4 has an inner structure E having a square planar shape and an outer structure outside the structure E. It has a double structure consisting of four external structures F provided at predetermined intervals and divided, and a damper D is interposed at a required position between both structures E and F. The internal structure E is a high-rise building composed of a frame composed of columns 11 and beams 12 and a floor 14 and the like.
The frame structure is a reinforced concrete structure or a steel reinforced concrete structure, or a steel frame structure. The external structure F is composed of a frame composed of columns 16, beams 17, and diagonal members 18 and a floor 19.
And a truss structure composed of a wall and a wall. The stiffness or weight of the skeleton is larger than that of the internal structure E. Therefore, the two structures E and F have different natural periods and therefore have different vibrations during an earthquake. It is configured so that it exhibits properties and the vibration is significantly attenuated by the damper D. The internal structure E is an office, an apartment house, a store, etc., and the external structure F is a common space for them, for example, a core space used for applications such as elevating facilities and various utilities. It is.

<D> Installation Position of Damper In FIG. 1 and FIG. 2, the damper D is installed between the internal structure A and the external structure B in 24 (8 places × 3 layers) places. The installation position is located between the beam-to-column joint 5 of the internal structure A and the beam-to-column joint 10 of the external structure B. In FIG. 3 and FIG. 4, 32 (8 places ×
4 layers) installed at the location, the beam-to-column joint 1 of the internal structure E
5 and the beam-to-column joint 20 of the external structure F.

The installation position of the damper D is as described above.
It is intensively interposed between the column and beam joints of both structures, but is not limited thereto, and may be installed intermittently or continuously between columns and beams or at any portion between structures. It may be placed on the upper floor. The number and the installation position of the dampers D can be set in consideration of the scales of both structures, the frame properties, the vibration properties, and the characteristics of the dampers D, that is, the spring rigidity (spring strength).

<E> Example of Damper to be Applied The following damper can be applied to the seismic vibration damping structure of the present invention. (A) Leaf spring damper (b) Coil spring damper (c) Hard rubber damper (d) Laminated rubber damper for metal plate (e) Air damper (air tube) (f) Viscous material damper (oil or water (Enclosed in a tube).

<F> Embodiment of Seismic Vibration Suppression Structure (3) In the seismic vibration suppression structure shown in FIG. 5, two structures G and H are arranged side by side. Vibration characteristics, that is, natural periods are different from each other, and a damper D is interposed between the structures G and H to be connected. Thereby, the seismic energy acting on the structure is absorbed, so that the deformation can be reduced. In addition, three or more structures may be arranged side by side, and a damper D may be interposed between the structures to be connected.

<G> Embodiment of Planar Shape of Structure (1) The case where the planar shape of the internal structure and the external structure of the structure is circular or polygonal is described below. In the structure shown in FIG. 6, both the internal structure 30 and the external structure 31 have a square planar shape, and a damper D is interposed between the two structures 30 and 31 for connection. The internal structure 30 is a core space.

The structure shown in FIG. 7 has two internal structures 3
0, 30 and an external structure 33, and the plane shape is a quadrangle, and a damper D is interposed between the structures 30, 33 and connected. The internal structure 30 is a core space.

FIG. 8 shows that the internal structure 30 has a square planar shape, the external structure has a rectangular structure 31 with a lower floor of a square shape, and the upper floor has a polygonal structure 32 with four corners at the upper floor. A damper D is interposed and connected between the two structures 30, 31, 32. The external structure 32 is a core space or the like.

In the structure shown in FIG. 9, a quadrangular outer structure 61 is incorporated at the four corners of the inner structure 60, or a damper D is interposed between the divided structures 60, 61 and connected. . The external structure 61 is a core space.

The structure shown in FIG. 10 comprises a rectangular internal structure 70 and U-shaped external structures 71, 71 on both sides thereof, and a damper D is provided between the two structures 70, 71. It is interposed and connected. Note that the outer structure 71 is a side core.

In the structure shown in FIG. 11, both the internal structure 50 and the external structure 51 have a substantially triangular planar shape, and a damper D is interposed between the two structures 50 and 51 to be connected.
The internal structure 50 is a core space.

FIGS. 12 and 13 show the internal structures 40 and 3 respectively.
0 and either of the external structures 34 and 41 have a circular or polygonal planar shape.

In the structure shown in FIG. 14, the inner structure 80 and the outer structure 43 are circular in plan view.
43, a damper D is interposed and connected.

FIG. 15 shows that the inner structure 40 and the outer structure 42 are circular in plan view, and are connected by interposing a damper D between the two structures 40 and 42.

<H> Embodiment of Planar Shape of Structure (2) The structures shown in FIGS. 6, 8, 9, 11, 12, 13, 14, and 15 are internal structures and The plane of the outer structure is concentric.

<3> Embodiment of Planar Shape of Structure (3) The structure shown in FIGS. 8, 9 and 10 has a structure in which the outer structure is divided into a plurality of inner structures and outer structures. It is composed.

<N> Embodiment of Side-Section Shape of Structure (1) In the structure shown in FIG. 14, both the internal structure 80 and the external structure 43 have a mountain-shaped side cross-section. However, the planar shape of both structures 80 and 43 may be polygonal.

<1> Embodiment of Side-Section Shape of Structure (2) In the structure shown in FIG. 15, the side structure of the external structure 42 is a mountain shape. However, the planar shape of both structures 40 and 42 may be polygonal.

[0026]

[Action]

The damper action of a structure during an earthquake Hereinafter, examples of FIGS. 1 and 2 will be described. <A> In the seismic vibration damping structure of the present invention, the internal structure A and the external structure B have different vibration characteristics, that is, natural periods,
By connecting the structures A and B with the damper D as shown in the figure, the two structures A and B exhibit different vibration properties and undergo relative deformation during an earthquake. FIG. 18 shows a comparison diagram of the response displacement of the earthquake-resistant vibration damping structure of the present invention to which the leaf spring damper D is applied, and a single conventional structure of the same scale. The dashed line in the figure shows the response displacement of the conventional structure without a damper, the displacement being 21 cm on the top floor. On the other hand, as shown by the solid line, the displacement of the seismic vibration-damping structure of the present invention is 7 cm on the top floor of the highly rigid internal structure A and 16 cm on the top floor of the low rigid external structure B. Approximately 25% lower than the product. This decrease in displacement is mainly due to damper D
Indicates that the seismic energy has been absorbed. Accordingly, by interposing the damper D between the double structures A and B, the vibration of the structure is attenuated and the deformation can be reduced.

<B> When installing the damper D,
By setting the damper D in an optimal state corresponding to the vibration characteristics, that is, the structures A and B having different natural periods, the vibration of the structure can be further reduced. That is, by appropriately changing the number and locations of the dampers D, the locations of the dampers D, and the characteristics of the dampers D, it is possible to design and construct an optimal seismic vibration control structure suitable for the purpose.

<C> In addition to considering the number and locations of the dampers D to be installed, the dampers D having a certain characteristic are set so that the structures A and B can reduce the deformation of the structures.
By selecting the natural period, it is possible to design and build a seismic vibration control structure that meets the purpose.

<D> During a large earthquake, the damper D functions to absorb seismic energy and reduce the deformation of the structure, thereby reducing the columns and walls constituting the framework of the structures A and B. Since the plastic deformation of the vertical member such as the above can be suppressed to a small level, the safety of the structures A and B is effectively improved.

<E> Since the damper D is independent of the vertical load supporting mechanism (column, beam and wall), the deformation of the damper D itself does not hinder the vertical load supporting ability.

<F> FIG. 16 shows a side cross section between structures A and B, (a) showing a normal state, (b) showing a state at the time of an earthquake,
This is a state in which the damper D is deformed during the earthquake and the structure B is deformed in the direction of the arrow. FIG. 17 shows a side cross section of the elevating part 28 (stairs, escalator, etc.) between the structures A and B. In the figure, reference numeral 29 denotes an overhanging floor that passes between the structures A and B. Other reference numerals are the same as those in FIGS. 1 and 2.

[0032]

As described above, the present invention has the following effects. <A> The anti-seismic structure according to the present invention comprises a plurality of structures arranged side by side, or a double structure consisting of an internal structure and an external structure, with a damper interposed between each structure. By mounting and connecting, (a) the seismic energy acting on the structure is remarkably absorbed, so that the vibration can be reduced and the deformation can be reduced as compared with the conventional structure. (B) As a result, a rational and economical structure can be designed and constructed. (C) Also, the safety of the structure against a large earthquake is dramatically improved. (D) Further, the post-earthquake reinforcement expected for conventional seismic vibration control structures is not required. <B> A damper is provided between each structure having a different natural period.
(A) The deformation of the structure due to the earthquake can be further reduced. (B) As a result, the skeleton of the structure having the lower rigidity has improved toughness performance. (C) As a result, the frame (column, beam, wall) of the structure having the lower rigidity has a reduced number of frames as compared with the related art, so that design and construction are easy and economical. (D) Further, since the frame of the above-mentioned structure does not become large,
In terms of use, livability is improved as compared with the conventional case.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of an earthquake-resistant vibration control structure according to the present invention.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a plan view showing a second embodiment of the seismic vibration damping structure according to the present invention.

FIG. 4 is a side sectional view of FIG. 3;

FIG. 5 is a plan view showing a third embodiment.

FIG. 6 is a plan view showing a fourth embodiment.

FIG. 7 is a plan view showing a modification of the fourth embodiment.

8A is a plan view showing a fifth embodiment, and FIG. 8B is a perspective view of FIG.

FIG. 9 is a plan view showing a sixth embodiment.

FIG. 10 is a plan view showing a seventh embodiment.

FIG. 11 is a plan view showing an eighth embodiment.

FIG. 12 is a plan view showing a ninth embodiment.

FIG. 13 is a plan view showing a tenth embodiment.

FIGS. 14A and 14B show an eleventh embodiment; FIG.
(b) is a bb plan view of (c). (c) is a side sectional view.

FIGS. 15A and 15B show a twelfth embodiment; FIG.
(a) is a side sectional view.

16 (a) and (b) are partially enlarged side sectional views between structures during normal times and during an earthquake, respectively.

FIG. 17 is a side sectional view of a lifting unit between structures.

FIG. 18 is an explanatory diagram comparing response displacements of the seismic control structure of the first embodiment and a conventional structure.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Etsuo Suzuki 441 Imai Minamicho, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture (72) Inventor Masanori Yoshimura 3-26 Nishishinjuku, Shinjuku-ku, Tokyo Tajimi Engineering Service Co., Ltd. (72) Inventor Masami Miyazawa 3-2-26-Nishi-Shinjuku, Shinjuku-ku, Tokyo Within Tajimi Engineering Service Co., Ltd. (72) Koji Yanagisawa 1-1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei (72) Inventor Seiji Kiyota 994-2 Otaniguchi, Urawa-shi, Saitama (72) Inventor Yasuhiro Kimura 1-15-1-411 Mori, Isogo-ku, Yokohama-shi, Kanagawa

Claims (8)

[Claims] An anti-vibration structure comprising: a plurality of structures arranged side by side; and a damper interposed between the structures and connected to each other. 2. The structure comprises: a centrally located internal structure;
An anti-seismic structure comprising a double structure with an outer structure on the outside thereof, wherein a damper is interposed between the structures and connected. 3. An anti-seismic vibration damping structure according to claim 1 or 2, wherein each of the structural members of the structural member has a different natural period. 4. The vibration-damping structure according to claim 1, wherein each of the structures has a circular or polygonal planar shape. . 5. An anti-vibration structure according to claim 2, wherein each of the structures has a concentric flat surface. 6. An anti-seismic structure according to claim 2, wherein the outer structure is divided into a plurality of structures. 7. The anti-seismic vibration damping structure according to claim 2, wherein the inner structure and the outer structure have a mountain-shaped cross section in a side section. Stuff. 8. The anti-seismic vibration damping structure according to claim 2, wherein the inner structure or the outer structure has a mountain-shaped side cross section. Stuff.