JPH0726783A - Composite control type earthquake suppressing - Google Patents

Abstract

PURPOSE:To reduce bending deformation of a bending deformation type structure and increase an installation effect of an interlayer earthquake suppressing device installed in an outer peripheral frame. CONSTITUTION:An earthquake suppressing structure 1 comprises a core 2 and an outer peripheral frame 3, wherein an interlayer earthquake suppressing device 7 for applying damping force to post and beam frames is installed between layers of the outer peripheral frame 3, top girders 4 stretched out from either one of the top core 2 or the top of the outer peripheral frame 3, while the top girders are separated from the other one thereof, and an earthquake suppressing device 5 for applying damping force to the core 2 is laid between the top girder 4 and the outer peripheral frame 3 or the core 2. The device 5 are connected to both core and frame so as to decrease response of the core 2 and reduce bending deformation, and an earthquake suppressing effect can be increased by installing the interlayer earthquake suppressing device 7.

Description

Detailed Description of the Invention

[0001]

This invention relates to a core and a peripheral frame,
Alternatively, the present invention relates to a composite control type vibration control structure that controls the deformation of a bending deformation type structure configured with an outer peripheral wall to a shear deformation type and enhances the effect of a vibration control device such as a damper installed between layers. .

[0002]

2. Description of the Related Art When a building frame is composed of a core consisting of multi-story seismic elements and an outer frame for the purpose of securing a large space, the core shares most of the horizontal force due to the difference in rigidity. As a result, the deformation of the frame due to seismic force and wind pressure is dominated by core deformation, but as the frame with continuous seismic resistant elements tends to be bent and deformed as shown in Fig. 11, the higher the level. , In order to suppress the vibration on a layer-by-layer basis, the effect will not be exerted when an interlayer damping device such as a damper is installed in the column / beam frame of each layer of the outer frame.

Since the inter-story vibration control device installed in the inter-story column / beam frame and connected to the upper and lower floors separated from each other gives a damping force to the frame according to the amount of inter-story shear displacement. , Its function is exhibited as the relative horizontal shear displacement is larger, but if the frame is of bending deformation type, the horizontal shear displacement between layers will be small and the vibration suppression effect due to installation will be reduced. It is necessary to reduce the bending deformation of the core when installing the inter-layer damping device on the frame.

The reduction of bending deformation of the core can be solved by increasing the rigidity of the entire frame including the outer peripheral frame.
If the rigidity of the entire frame is increased and the core and outer frame are designed to share the same horizontal force, the seismic force input to the outer frame will be excessive, and on the contrary, they will be separated and the core will bear most of the seismic force. If it is designed, the overturning moment at the leg of the core becomes too large, so that it is necessary to increase the rigidity of the lower floors, such as increasing the cross section, which may make the design impossible.

The present invention was made by paying attention to the problem of deterioration of the function of the vibration control device when the vibration control device is installed between layers of a bending deformation type structure having a core and an outer frame. It is intended to propose a structure that enhances the installation effect.

[0006]

According to the present invention, the core and the outer peripheral frame are separated from each other so that the core bears much of the seismic force to avoid the input of excessive seismic force to the outer peripheral frame, and at least the top of the core. By connecting a damping device that applies damping force to the core with the outer frame, the vibration of the core is damped, the response is reduced and bending deformation is reduced, and the inter-layer damping installed between the layers of the outer frame. Enhances the vibration suppression effect by installing the device.

Since the core is separated from the outer peripheral frame, it bears most of the seismic force, and tends to increase the bending deformation amount and the overturning moment of the legs, but the deformation increases at least at the apex depending on the deformation amount. By being suppressed, the response is reduced and the amount of bending deformation is reduced.
In addition, the deformation behavior of the frame changes from bending deformation type to shear deformation type by receiving a bending back moment that reduces the overturning moment during deformation, increasing the relative horizontal shear displacement between layers, Installation effect is enhanced.

A top girder that is cut off from the other side of the top part of the core and the outer peripheral frame or the top part of the outer peripheral wall projects from either side, and between the top girder and the outer peripheral frame or outer peripheral wall, or between the top girder and the core. A seismic control device is installed between them and connected to both. Since the damping device is installed between the top of the core and the outer frame or outer wall, the damping device works efficiently as the bending deformation of the core increases, and between the top girder and the outer frame or outer wall. A damping force according to the relative displacement amount between the cores is applied to the cores to reduce the response of the cores.

The effect of reducing the response of the core is that, in addition to the top girder at the top, an intermediate girder that is cut off from the other side is extended from either side of the intermediate layer of the core and the outer peripheral frame or the intermediate layer of the outer peripheral wall. It is increased by installing a damping device between the core and the outer frame or outer wall, or between the core and a plurality of layers to apply damping force to the core. When the core is divided into a plurality of seismic resistant elements in a plane, the space between the opposing seismic resistant elements is also used for installing the damping device.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing an embodiment.

As shown in FIGS. 1 to 4, the vibration control structure 1 of the present invention comprises a core 2 composed of a series of seismic resistant elements 21 and an outer peripheral frame 3, or an outer peripheral wall 32, and FIGS. As shown in, the outer frame 3, or the pillar between the outer wall 32
A structure in which an inter-layer vibration damping device 7 that gives a damping force to a column / beam frame during displacement between layers in a beam frame is installed, and vibration is suppressed by at least the vibration damping device 5 installed at the top of the core. The bending deformation of No. 2 is reduced, and the installation effect of the inter-layer vibration damping device 7 is enhanced. As shown in FIGS. 5 and 6, the seismic resistant element 21 of the core 2 is constructed with an RC wall structure, an S bracing structure, or the like, and the structural form is not limited as long as bending deformation is dominant.

As shown in FIG. 1 and FIG. 3 which is a sectional view taken along the line xx, a top girder is separated from either the top of the core 2 and the top of the outer frame 3, or the outer wall 32 from the other side. 4, a vibration control device 5 is installed between the top girder 4 and the outer peripheral frame 3, or the outer peripheral wall 32, or between the core 2 and is connected to both. The top girder 4 has a high wall beam shape and is an earthquake resistant element.
It has a rigidity that is not significantly different from the rigidity of 21. 1 to 8 show the case where the top girder 4 projects from the core 2, and FIGS. 9 and 10 show the case where it projects from the outer peripheral wall 32.

The basic principle of the vibration control device 5 is that a rod reciprocates in a hydraulic cylinder having hydraulic chambers on both sides of a piston, and a resistance force when the pressure oil moves between the hydraulic chambers is generated as a damping force. The hydraulic cylinder is connected to one of the core 2 and the outer peripheral frame 3, or the outer peripheral wall 32, and the rod is connected to the other so as to be capable of relative rotational displacement.
When the relative displacement of the outer peripheral frame 3 or the outer peripheral wall 32 in any direction, the rod reciprocates to reduce the displacement amount. In the vibration control device 5, when the core 2 is bent and deformed, a passive high damping device that generates a damping force corresponding to the relative displacement between the core 2 and the outer peripheral frame 3 or the outer peripheral wall 32, or movement of pressure oil is used. The stop is automatically switched by the operation of the switching valve, and an active variable damping device capable of adjusting the damping force is used.

As shown in FIG. 1, the vibration control device 5 includes a top girder 4 and a core 2 which extend between the top girder 4 and a column 31 of the outer peripheral frame 3 or from an outer peripheral wall 32 as shown in FIGS. 9 and 10. In addition to the seismic resistant element 21 of FIG. 1, the core 2 is divided into a plurality of seismic resistant elements 21, 21 on the plane as shown in FIG. 4 which is a sectional view taken along the line yy of FIG. Seismic element 21, 21
The core 2 installed between the tops of the
And the relative displacement between the outer peripheral frame 3 or the outer peripheral wall 32,
A damping force is applied to the core 2 during relative displacement between the seismic resistant elements 21, 21. The vibration of the core 2 is attenuated at the time of bending deformation, and at the same time, the core 2 receives a bending-back moment in the position of the top girder 4 from the vibration control device 5 in a direction opposite to the overturning moment.

FIGS. 1 and 2 show an example of a center core type plan plan, but in the case of the one side core type and other types shown in FIG. 7, the top girder 4 is arranged from the core 2 to the outer peripheral frame 3 or the outer periphery. The vibration control device 5 is similarly installed by projecting from the frame 3 to the core 2.

In the case of the plane shown in FIG. 1, in addition to the top girder 4 at the top, FIG. 8 shows one of the intermediate layer of the core 2 and the outer peripheral frame 3, or the intermediate layer of the outer peripheral wall 32 from one side or the other side. The intermediate girder 6 to be separated is projected, and between the intermediate girder 6 and the outer peripheral frame 3, or the outer peripheral wall 32,
Alternatively, it is an example in which the vibration damping device 5 is installed between the core 2 and the core 2. In this embodiment, the core 2 is provided with a damping force in a plurality of layers and receives a bending-back moment, so that the effects of response reduction and tipping moment reduction are enhanced. The intermediate girder 6 also has the same rigidity as the top girder 4.

FIGS. 9 and 10 show the case of the one-sided core type in which the top girder 4 and the intermediate girder 6 are extended from the outer peripheral wall 32 to the core 2 and the vibration control devices 5 are installed in a plurality of layers.

Depending on the amount of deformation, the core 2 receives a damping force at the apex, or at the apex and the intermediate layer, so that the response is reduced and the amount of bending deformation is reduced. In addition, the vibration control device 5 when deformed
By receiving a bending-back moment that reduces the overturning moment, the deformation characteristics of the core 2 become more dominant between the bending deformation type shown in FIG. 11 and the shear deformation type shown in FIG. The amount of relative horizontal shear displacement increases.

In the shear deformation type frame, the inter-story shear displacement difference becomes remarkable in the layer corresponding to the node of the vibration mode. Therefore, as shown in FIGS. 13 and 14, the inter-layer vibration control device 7 corresponds to this node. , Or the closer it is, the more effective it is. 13 shows the inter-layer vibration control device 7 in the layer where the primary vibration mode in the outer frame 3 becomes a node, and FIG.
The case where it is installed also in the layer where the secondary vibration mode becomes a node is shown.

The inter-layer vibration control device 7 is installed in the frame of the pillar / beam,
A seismic frame 8 such as a V-shaped brace that is connected to either one of the upper floor and the lower floor and is separated from the other side, such that one is connected to the frame and the other is separated from the frame It is installed straddling the frame on the side and gives a damping force to the frame of the pillar / beam at the time of interlayer displacement to damp the vibration.

As the inter-layer damping device 7, in addition to the damping device 5 described above, a steel material damper, a viscous damper, or the like is used.

[0022]

The present invention is as described above. By separating the core from the outer peripheral frame or the outer peripheral wall and allowing the core to bear much of the seismic force, an excessive seismic force is applied to the outer peripheral frame and the outer peripheral wall. By avoiding and damping the vibration of the core by connecting a damping device that gives a damping force to the core between at least the top of the core and the outer frame or outer wall, a bending moment is applied to the core. Since it is a structure, it is possible to reduce the bending deformation of the frame and change its deformation property to the shear deformation type, and enhance the vibration suppression effect by installing the interlayer damping device installed between the layers of the outer frame and outer wall. be able to.

[Brief description of drawings]

FIG. 1 is a plan view of a roof floor showing the installation position of a vibration control device in the case of a center core type.

FIG. 2 is a plan view of a reference floor of FIG.

FIG. 3 is a sectional view taken along line xx of FIG.

4 is a cross-sectional view taken along the line yy of FIG.

FIG. 5 is an elevation view showing a core of an RC wall structure.

FIG. 6 is an elevational view showing a core having an S brace structure.

FIG. 7 is a plan view of the roof floor showing the installation position of the vibration control device for the one-sided core type.

FIG. 8 is a view in which an intermediate girder is extended from the core.
3 is a cross-sectional view taken along line xx of FIG.

FIG. 9 is a plan view of a reference floor when an intermediate girder is projected from an outer peripheral wall of one side core type.

10 is a cross-sectional view of FIG.

FIG. 11 is a schematic diagram showing a deformation property of a bending deformation type frame.

FIG. 12 is a schematic diagram showing the deformation characteristics of a shear deformation type frame.

FIG. 13 is an elevational view showing an installation example of the interlayer vibration damping device on the outer peripheral frame.

FIG. 14 is an elevational view showing another installation example of the inter-layer damping device.

[Explanation of symbols]

1 ... Seismic control structure, 2 ... Core, 21 ... Seismic element, 3 ...
… Outer frame, 31 …… Pillar, 32 …… Outer wall, 4 …… Top girder, 5 …… Vibration control device, 6 …… Intermediate girder, 7
…… Layered seismic control device, 8 …… Seismic frame.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yukoma Yamamoto 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Tomohiko Hatada 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Tsuyoshi Takai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd.

Claims (3)

[Claims] 1. A core composed of multiple layers of seismic resistant elements,
The outer frame, or outer wall,
Or a structure in which an inter-layer vibration control device that gives a damping force to the pillar / beam frame during interlayer displacement is installed in the interlayer pillar / beam frame of the outer peripheral wall, and the top of the core and the outer peripheral frame, or the top of the outer peripheral wall A top girder, which is separated from the other side, overhangs from either side, and a vibration control device is installed between the top girder and the outer frame or outer wall, or between the core and a damping device that applies damping force to the core. ,
A composite control type damping structure characterized by being connected to both sides. 2. In addition to the top girder at the top, an intermediate girder separated from the other side extends from either one of the intermediate layer of the core and the outer peripheral frame or the intermediate layer of the outer peripheral wall, and the intermediate girder and the outer peripheral frame, or The composite control type vibration control structure according to claim 1, wherein a vibration control device that applies a damping force to the core is installed between the outer peripheral wall and the core and is connected to both of them. 3. The core is divided into a plurality of seismic resistant elements on a plane, and a seismic damping device is installed between the divided seismic resistant elements and connected to both of them. 1 or the composite control type damping structure according to claim 2.