JP5507743B1 - Isolation device - Google Patents

Abstract

[PROBLEMS] To separate the weight support mechanism and the vibration isolation mechanism of the superstructure so that the load of the superstructure moves to the vibration isolation device in the event of an earthquake. Provide an easy isolation device.
[Solution]
A structure with a vertical load support that can be separated. A rolling element consisting of a sphere or a roller is held on the arc-shaped curved surface at the contact surface between the upper structure and the lower structure. A vibration isolator that separates a vibration isolation mechanism and a weight support mechanism, wherein the load is moved to a curved surface by movement and the rolling element and the structure portion of the curved surface become the vertical load support.
[Selection] Figure 2

Description

The present invention relates to a vibration isolation device that separates a vertical load support mechanism and a vibration isolation mechanism of a structure such as a building or a bridge and moves a vertical load of an upper structure to the vibration isolation mechanism during an earthquake.

A vibration isolator of a construction method using laminated rubber, a ball, a bolt or the like is known from Patent Document 1, Patent Document 2, Patent Document 3, and the like.

In these vibration isolators, laminated rubber, balls, bolts, and the like are interposed between the substructure and the superstructure, and the vibration isolator is a weight support for a vertical load.

In these vibration isolators, the load is always concentrated on the laminated rubber, sphere, bolt, etc. of the constituent members, and the load is concentrated on a limited range of members of the vibration isolator and the upper and lower structures, There is a problem that the fatigue of the member has advanced and the repair time has to be advanced, and there is a problem that the wind sways.

JP 2012-52665 A (Representative drawing) JP 2010-270581 A (Representative drawing) JP 2006-112164 A (Representative drawing)

Yoshiaki Akiba and 86 other authors Mechanical Engineering Handbook Basics α3 Material Society of Mechanical Engineers Japan Society of Mechanical Engineers President Chairman Shinobu Saito Published November 25, 2007 21-29

In the proposed vibration isolator, a vertical load is always applied to the vibration isolator such as laminated rubber, balls, bolts, etc., so the material fatigue of the limited range of the vibration isolator and the upper and lower parts working on it has progressed, and the members It has become clear that there is a problem of swaying in the wind, as well as unavoidable time for replacement.

Accordingly, the problem to be solved by the present invention is to provide a vibration isolator that can be naturally restored with a highly reliable structure that does not require a restoration device and that is inexpensive and easy to manage.

The above-mentioned problem has an arcuate curved surface on the parallel planes of the upper and lower part works on the contact part that supports the gravity of the upper structure that allows separation between the building upper structure and the lower structure, A rolling element consisting of a sphere or a roller is held in an unloaded state, and the rolling element becomes a weight support by the rolling of the rolling element by the relative movement of the upper and lower works, causing the upper and lower works to separate, and the weight support Is solved by a vibration isolator which is a vibration isolation mechanism .

In the vibration isolator of the present invention, the load is not applied to the vibration isolation mechanism at normal times, and the reliability of the load moving to the vibration isolation mechanism via the rolling element during an earthquake is high, maintenance is easy, and the cost is low. Thus, it is possible to provide a vibration isolator that restores nature.

In this method, the upper load is applied to the contact surface of the upper and lower work, there is no material fatigue of the vibration-isolating member and the member concentrated on the limited area of the upper and lower work, the replacement time and repair time of the member Can be extended, and there is no shaking caused by the wind.

The rolling element has a small rolling frictional resistance, and the rolling exhibits a vibration isolation effect against horizontal vibration.

Regardless of the position of the rolling element that has been rolled by the horizontal load, a force that always rolls toward the apex of the curved surface works, and a restoring device is unnecessary.

Therefore, it can be used not only in the city but also in mountainous areas and remote areas that are difficult to manage.

Further, by increasing or decreasing the number and area of the curved surface that holds the rolling elements, the shared load of the rolling elements can be adjusted, and it can be widely used as a vibration isolator from light buildings to heavy buildings.

This vibration isolation device can be used alone as a building vibration isolation device, and can also be used in conjunction with existing vibration isolation devices. Since the normal load is not applied to the vibration isolation device, material fatigue of the vibration isolation member can be reduced. .

The horizontal vibration in all directions can be attenuated by using a sphere as the rolling element of this device.

A roller is used as the rolling element of this device, and the frictional resistance force in the roller long axis direction can be used.

The roller referred to here is a rolling element having a coaxial axis in the long axis direction, and even if the wheel shape or the rolling part of different radii has a distorted shape, the rotation angle of the rolling element and the axis of the rolling element produced by the rolling are different. A general term for objects that roll without causing a difference in rotation angle.

A-1 is a cross-sectional view showing a rolling element and an upper and lower part work held between the rolling elements with no load. A-2 is a cross-sectional view showing the rolling element and the upper and lower part work held in a state where a load is applied to the rolling element. B-1 is a cross-sectional view showing a state in which the rolling element is held in an unloaded state and the rolling guide member is in the rolling element. B-2 is a cross-sectional view showing a state in which a rolling induction member is present in the rolling element and is held in a state where a load is applied. C-1 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and no load is applied. C-2 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and a load is applied. A is a cross-sectional view showing the relative movement of the upper and lower works in which a curved surface is provided on the lower work side, and the upper and lower structures are separated by rolling of the rolling elements and the rolling elements become the weight support. B is a cross-sectional view showing that the curved surface is provided on the lower work side, the rolling element is held with no load, the upper structure load is applied to the lower structure, and the contact surface of the upper and lower work works as a weight support. is there. A is a relative movement of the upper and lower works, where the curved body is provided on the lower work side, and the rolling structure is separated from the upper and lower structures by the rolling action of the rolling elements provided with the rolling induction material. FIG. Cross section B is shown that the rolling element and superstructure projecting contact surface a load of no load subjected to the rolling element rolling induction material having a curved surface on the lower engineering side is a weight bearing member FIG. A is a cross-sectional view showing the separation and relative movement of the upper and lower work by rolling the rolling element, with the curved surface provided on the upper and lower work side and the rolling induction material provided on the curved surface of the upper and lower work. B is a cross-sectional view showing that the curved surface is provided in the upper and lower work, the rolling induction material is provided in the upper and lower work, holding the rolling element in a no-load state, and the protrusion of the upper work is supporting the weight. It is. It is sectional drawing which used this vibration isolator for the building. It is a cross-sectional view using a plurality of rolling elements of the vibration isolator in the lower part of the existing vibration isolator of the rubber steel plate laminate. A is a top view of this vibration isolator using a plurality of balls in the lower part of the existing vibration isolator of the rubber steel plate laminate. B is a plan view of the present vibration isolator using a plurality of rollers at the bottom of the existing vibration isolator of the rubber steel sheet laminate. It is a cross-sectional view using one rolling element of this vibration isolator at the lower part of the existing vibration isolator of the rubber steel plate laminate. A is a top view of this vibration isolator using one ball at the bottom of the existing vibration isolator of the rubber steel sheet laminate. B is a plan view of the vibration isolator using one roller at the bottom of the existing vibration isolator of the rubber steel sheet laminate. C is a plan view of the vibration isolator using a roller orthogonal to the lower part of the existing vibration isolator of the rubber steel sheet laminate. A is a cross-sectional view of a jack unit for height adjustment that uses a plurality of rolling elements in the vibration isolator. B is a cross-sectional view of a height adjusting jack unit that uses one rolling element in the vibration isolator. It is sectional drawing of the vibration isolator of the vertical vibration attenuation | damping which utilizes a bending phenomenon for a vibration isolator. It is a figure of patent document 1. FIG. It is a figure of patent document 2. FIG. It is a figure of patent document 3. FIG.

Hereinafter, the implementation method of this invention is demonstrated in detail using drawing.

1A, B-1, and C-1 show the rolling element 6 and the upper and lower constructions 1 and 2 in which the rolling element 6 of the vibration isolator of the present invention is held in a state of no load P = 0. B-1 and C-1 are cross-sectional views showing the rolling induction materials 7-1, 7-2, and 7-3.

1A-2, B-2, and C-2 show the rolling element 6 and the upper and lower constructions 1 and 2 that are held in a state where a load P is applied to the rolling element 6 of the vibration isolator of the present invention. , B-2, and C-2 are cross-sectional views showing deformation of the rolling induction members 7-1, 7-2, and 7-3 due to the load P.

In FIG. 1B-1 and B-2, the rolling element rolls with the radius R + residual thickness H1 of the rolling element 6 with the effective radius of the rolling element with rolling ability.

FIG. 2B shows the present invention in which there is a separable contact surface 3 that supports the load of the superstructure 1, a curved surface 4 is provided on the lower surface, and a rolling element 6 is sandwiched between the upper and lower structures 1, 2. In the vibration isolator, when the rolling element 6 is on the curved surface vertex and the load P = 0, the rolling element 6 shown in FIG. 2A rolls M1 from the curved surface vertex to the edge, and the load P is applied. It is a cross-sectional view showing a state in which 1 and 2 are separated from M2 and a load moves to the vibration isolator.

The rolling element 6 rolls on the curved surface 4 due to the horizontal load, and the load of the upper structure 1 is moved and applied to the vibration isolator while changing the interval between the upper and lower structures 1 and 2. Since they move relative to each other, the horizontal vibration is attenuated and transmitted to the facing flat body.

FIG. 3 shows that the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the rolling element 6 is provided with a rolling guide 7-1 so that the initial relative movement and rolling can be performed quickly. FIG. 3B shows a vibration isolator which shows P = 0, and FIG. 3-A shows a state where a load of P is applied to the rolling elements.

FIG. 4 shows a vibration isolator in which the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the upper and lower structures are curved. It is a vibration isolator that works in the same way as a vibration isolator.

(Application 1)
FIG. 5 shows the use of the vibration isolator between the upper and lower works 1 and 2 of the building.

FIG. 11 shows a vibration isolating method in which a vertical beam is damped by using a bending phenomenon, and a simple beam 13 is provided on the upper structure 1 to build a column 14.

The space H3 under the beam secures a space that can cope with the maximum deflection amount according to Non-Patent Document 1.

(Application example 2)
FIG. 6 shows a structure in which a plurality of rolling elements of the vibration isolator is used in the lower part of the rubber steel plate laminate vibration isolator 8.

FIG. 7A is a plan view using a plurality of spherical rolling elements in the vibration isolator.

FIG. 7B is a plan view of the vibration isolator using a plurality of roller rolling elements.

(Application 3)
FIG. 8 shows a case where a single rolling element is used for the vibration isolator at the bottom of the rubber steel plate laminated vibration isolator 8, and each of the vibration isolator has a force to cause the upper structure to tilt. It is a cross-sectional view of a vibration isolator that works but keeps the structure horizontal by a plurality of vibration isolator.

FIG. 9A is a plan view in which one sphere is used for the vibration isolator.

FIG. 9B is a plan view using one roller for the vibration isolator.

FIG. C is a plan view showing the arrangement of rollers using a roller orthogonal to the vibration isolator and utilizing the damping of horizontal vibration due to the rolling of the roller and the frictional resistance force in the roller long axis direction.

(Application 4)
FIG. 10 is a cross-sectional view of the height adjusting jack unit of the vibration isolator, FIG. 10A is for a plurality of rolling elements , and FIG. 10B is an apparatus for one rolling element .

By installing the jack, the vibration isolator can be easily installed, and management at a later date is easy.

The present invention relates to a vibration isolator that separates a weight support mechanism and a vibration isolation mechanism of an upper structure, and can attenuate the vibration of a structure against a vibration such as an earthquake.

DESCRIPTION OF SYMBOLS 1 Superstructure 2 Substructure 3 Upper / lower construction contact surface 3-1 Protruding upper / lower construction contact surface 3-2 Columnar upper / lower construction contact surface 4 Curved surface 5 Cavity 6 Rolling body 7-1 Rolling derivative 7-2 of rolling element Rolling derivative of superstructure curved surface 7-3 Rolling derivative of substructure curved surface 8 Rubber steel plate laminate vibration isolator 9 Rolling derivative 10 Rolling rolling element 11 Jack unit 12 Jack for height adjustment 13 Simple beam 14 Column R Rolling Rolling body radius H1 Rolling derivative residual thickness H2 Rolling derivative no-load thickness H3 Space under beam P at maximum deflection Load applied to rolling element M1 Rolling width Relative movement of upper and lower work M2 Vertical relative movement of upper and lower work amount

Claims (3)

A separable vertical load support part exists on the contact surface of the structure upper structure and the lower structure, and a rolling element made of a sphere or a roller is sandwiched on the arcuate curved surface of the contact surface part of the upper and lower structures, and the vertical load A vibration isolator in which the vertical load is moved to a curved surface by rolling of the rolling element from a vertical load support portion in which a part of the support surface has a protruding column shape, and the vibration isolation mechanism and the weight support mechanism are separated. The vibration isolator according to claim 1, wherein a beam receiver is provided on the upper structure, and a column is built by installing a beam on the beam receiver. Provided below the structure upper structure is a projecting pillar-shaped vertical load support portion and a rubber steel sheet laminate that can be separated from the structure lower structure, and provide an arcuate curved surface on the upper surface of the structure lower structure, and the bottom surface of the rubber steel sheet laminate And a vibration isolator comprising a rolling element made of a sphere or a roller between the arcuate curved surfaces.

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