CN200946332Y - New three-dimensional vibration isolation device - Google Patents

Abstract

The utility model discloses a new-type three-dimensional shock-insulation device which consists of serial connection between the overlapping-layer rubber shock-insulation holder and a vertical shock-separating component; the utility model is characterized in that: the rubber cushion (14) is provided with at least three flexible anti-pull component (6) which are arranged circularly around symmetrical central line; the central part of the flexible anti-pull component (6) is bent inside a central hole (5) of the rubber cushion, both heads are fixed at upper and lower end of the rubber cushion (14); lower linkage plate (9) for the overlapping-layer rubber shock-insulation holder is arranged on a ring spring (12); upper end of the guide sleeve (11) extends internally to a ring flange (17) to fasten the lower linkage plate (9); a ring buffer cushion (10) is arranged between ring flange (17) and the lower linkage plate (9). Because the rubber cushion (14) body for the utility model is provided with the flexible anti-pull component (6) and anti-pull structure is arranged at serial connection part between the overlapping-layer rubber shock-insulation holder and the circular spring shock-insulation holder, the shock-insulation device for high-rise building can greatly improve function of anti-swing or even anti-collapsing for high-rise building.

Description

New three-dimensional vibration isolation device

technical field

The utility model relates to a building anti-vibration (or vibration) device, in particular to a three-dimensional shock-isolation device which is connected in series with a sandwich steel plate rubber pad and a vertical shock-isolation component.

Background technique

The seismic isolation device is an anti-seismic isolation device installed between the building and the foundation. The early seismic isolation devices were mainly two-dimensional seismic isolation bearings composed of alternating laminated layers of rubber and thin steel plates, which could only isolate the horizontal component of the shock wave. With the improvement of people's understanding of the multi-dimensional characteristics of earthquakes, three-dimensional seismic isolation devices have gradually attracted the attention of researchers in this field. On January 5, 2005, the State Intellectual Property Bureau published a patent application for a "three-dimensional shock isolation system" (publication number: 1560395). It is formed by a vertical shock-absorbing member composed of a disc spring and a damper arranged in the center hole of the composite disc spring. The inventor of this technical scheme only considered the pressure generated by the "vertical component" of the earthquake on the isolation support, but ignored the huge tension generated by the swaying or even overturning of high-rise buildings during the earthquake, so the scheme did not consider Tensile structure, the only tensile structure is the vulcanized molded structure of the damper in the center hole of the composite disc spring and the rubber pad of the interlayer steel plate, obviously unable to withstand the huge tensile force produced by the overturning of high-rise buildings. On September 21, 2005, the State Intellectual Property Bureau authorized and announced the utility model patent of "a three-dimensional rubber shock-isolation bearing". The technical solution disclosed in this patent is to connect ordinary rubber and thin steel plates in series It is composed of a vertical shock-absorbing support, which is characterized in that the upper connecting plate and the base (steel sleeve 2) of the vertical shock-isolating support form a piston cylinder structure, and the cavity of the cylinder body is provided with rubber and thin An elastic rubber pad (vertical shock-absorbing plate 1) with steel plates stacked alternately, wherein the connecting plate and the steel sleeve play a guiding role, and the vertical shock-absorbing plate plays a damping role, and the two are combined to eliminate the shock wave transmitted from the foundation the vertical component of . This shows that this utility model also does not have tensile structure, can not resist the gigantic pulling force that the rocking of high-rise building even overturns produces in the earthquake.

Contents of the invention

In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to improve the tensile strength of the three-dimensional seismic isolation device to resist the huge tensile force generated by the swaying or even overturning of high-rise buildings during an earthquake.

The technical solution that the utility model solves the problems of the technologies described above is:

A new type of three-dimensional shock-isolation device, which is composed of laminated rubber shock-isolation bearings connected in series with vertical shock-isolation components, and is characterized in that the rubber pads of the laminated rubber shock-isolation bearings are circularly spaced around the center line of symmetry. Cloth at least three flexible tensile members, the middle part of the flexible tensile member is bent and placed in the center hole of the rubber pad, and the two ends are fixed on the upper and lower ends of the rubber pad; the stretching length of the flexible tensile member is not greater than the rubber pad The tensile elastic deformation amount; the lower coupling plate of the laminated rubber shock-isolation bearing is arranged on the ring spring, and the upper end of the guide sleeve extends inwards to a ring flange to clamp the lower coupling plate in it, and the ring An annular buffer pad is arranged between the flange and the lower connecting plate.

In the above technical solution, the stretched length of the flexible tensile member is equal to the difference between the length of the flexible tensile member in a fully straightened state minus the length of the flexible tensile member in a bent state.

The annular flange described in the utility model is formed by welding a clamp cover on the upper end of the guide sleeve.

The flexible tensile member described in the utility model is a steel wire rope, and the middle part is freely bent and placed in the central hole of the rubber pad.

The upper and lower end surfaces of the rubber pad described in the utility model are provided with sealing steel plates, on which small holes are arranged around the symmetrical center, and the two ends of the flexible tensile member pass through the small holes and are respectively welded on the outer end surfaces.

Compared with the prior art, the three-dimensional shock-isolating device described in the utility model has made the following two major improvements. One is that the rubber pad body of the laminated rubber shock-isolation bearing is provided with a flexible tensile member, and the two ends of the member are fixed on the rubber pad. On the upper and lower ends of the surface, and the extension length of the flexible tensile member is not greater than the tensile elastic deformation of the rubber pad, so the horizontal deformation and the tensile deformation of the entire shock-isolation bearing are within the design range of the rubber pad. The flexible tensile member is in a state of free extension. Once it approaches the design range of the rubber pad, the flexible tensile member will be straightened and enter the tensile protection state to bear all the external tension, thereby effectively protecting the rubber pad and the laminated rubber vibration isolation. The overall structure of the support is not damaged; the second is that the upper end of the guide sleeve extends inwards and an annular flange clamps the lower coupling plate in the guide sleeve, and an annular buffer is provided between the upper annular flange and the lower coupling plate The pads constitute a tensile structure, which not only provides a structure with a tensile effect for the vertical shock-isolation member, but also eliminates the impact generated by the vertical vibration. It can be seen that the three-dimensional seismic isolation device described in the utility model can greatly improve the anti-swaying or even overturning ability of high-rise buildings.

Description of drawings

Fig. 1 is the structural representation (longitudinal section) of a kind of specific embodiment of the utility model;

Fig. 2 is a deformation state diagram of the embodiment shown in Fig. 1 under the joint action of horizontal force and vertical downward force.

Detailed ways

The utility model is further described in detail below in conjunction with the accompanying drawings, so that the public can better grasp the implementation means of the utility model and fully understand the beneficial effects of the utility model, but the utility model is not limited by the embodiments.

Referring to Fig. 1 , the rubber pad 14 is composed of a layer of rubber 5 and a layer of steel plate 4 alternately stacked and then molded and vulcanized. The center is provided with a central hole 15, and a rubber protective layer 7 is naturally formed around it during the molding and vulcanized process. The upper and lower ends of the rubber pad 14 are respectively provided with an upper sealing steel plate 3 and a lower sealing steel plate 8, and the upper sealing steel plate 3 and the lower sealing steel plate 8 are provided with 8 small holes 16 around the center of symmetry. Make, the middle part freely bends in the central hole 15 of rubber pad 14, and two ends pass through aperture 16 and are respectively welded on the outer end faces of last sealing steel plate 3 and following sealing steel plate 8. The small hole 16 is inclined from the center to the surroundings to increase the bending angle of the flexible tensile member 6 (wire rope) and prevent the flexible tensile member 6 (wire rope) from being broken. The quantity of described flexible tensile member 2 depends on the size of the whole support, at least three; When the shear tensile deformation of the pad 14 is close to the design range, the flexible tensile member 6 is straightened (completely unfolded). The upper connecting plate 1 and the lower connecting plate 9 are respectively fixed on the upper sealing steel plate 3 and the lower sealing steel plate 8 by countersunk bolts 2 .

Referring to Fig. 1, a guide sleeve 11 is extended upwards on the base 18, and the annular spring 12 is located in the guide sleeve 11; The lower connecting plate 9 of the laminated rubber shock-isolation bearing is arranged on the annular spring 12, and is stuck in the guide sleeve 11 by the card cover 17', and an annular buffer pad 10 is arranged between the card cover 17' and the lower connecting plate 9. Wherein said annular buffer pad 10 is an annular elastic rubber pad.

Referring to Fig. 1, the upper connecting plate 1 is provided with reserved holes 13 connected with the building around, and the base 18 is provided with reserved holes 13 connected with the foundation around.

Referring to Fig. 2, under the action of a large horizontal force, when the shear tensile deformation of the rubber pad 14 approaches the design range, the flexible tensile member 6 is straightened and enters the tensile protection state to bear all the external tensile forces At the same time, the clamp cover 17' securely clamps the lower coupling plate 9 in the guide sleeve 11, and the ring-shaped buffer pad 10 eliminates the impact of vertical vibration, thereby effectively protecting the entire shock-isolating device from being damaged.

Claims (4)

1. A new type of three-dimensional shock-isolation device, which is composed of laminated rubber shock-isolation bearings and vertical shock-isolation members connected in series, and is characterized in that the rubber pad (14) is evenly distributed in rings around the symmetrical centerline in the body for at least three Only the flexible tensile member (6), the middle part of the flexible tensile member (6) is bent and placed in the central hole (15) of the rubber pad, and the two ends are fixed on the upper and lower ends of the rubber pad (14); The stretching length of the tension member (6) is not greater than the tensile elastic deformation of the rubber pad (14); the lower connecting plate (9) of the laminated rubber shock-isolation bearing is arranged on the ring spring (12), and the The upper end of the guide sleeve (11) extends inwards an annular flange (17) to clamp the lower coupling plate (9) therein, and an annular buffer pad ( 10). 2. A new type of three-dimensional shock isolation device according to claim 1, characterized in that said annular flange (17) is formed by welding a clamp cover (17') to the upper end of the guide sleeve (11). 3. A new type of three-dimensional seismic isolation device according to claim 1 or 2, characterized in that the flexible tensile member (6) is a steel wire rope, and the middle part is freely bent and placed in the center hole (15) of the rubber pad (14). )Inside. 4. A new type of three-dimensional seismic isolation device according to claim 3, characterized in that the upper and lower ends of the rubber pad (14) are respectively provided with sealing steel plates (3, 8), on which are arranged around the center of symmetry. There are small holes (16), and the two ends of the flexible tensile member (6) pass through the small holes (16) and are respectively welded on the outer end faces thereof.

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