CN205591380U - Three -dimensional shock isolation device of antidumping - Google Patents

Abstract

The utility model discloses a three -dimensional shock isolation device of antidumping, the device are concatenated with compound belleville spring isolation bearing by laminated rubber isolation bearing and constitute, laminated rubber isolation bearing's the upper and lower both ends of rubber pad be equipped with and seal a steel sheet and a lower steel sheet, go up to seal to be equipped with on the steel sheet and bind the board, be equipped with down on the lower steel sheet and bind the board, the upper end outside fixedly connected with top connection board of uide bushing, binding on and being equipped with the tension member of being made by the steel sheet between board and the top connection board, this tension member bends to the segment of a circle, and its both ends are fixed respectively and are bound on the board binds the board with the top last, the horizontal maximum deflection of tension member be greater than the horizontal shear elastic deformation volume of rubber pad. The utility model discloses a tension member among the three -dimensional shock isolation device not only plays the effect of tensile and antidumping, but also can improve shock isolation device's level and vertical power consumption ability, and this tension member also is convenient for maintain and change when damaging simultaneously, reduces use cost.

Description

An anti-overturning three-dimensional seismic isolation device

technical field

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

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 isolation bearings composed of rubber and thin steel plates alternately laminated, which could only isolate the horizontal component of seismic waves. 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. However, many three-dimensional seismic isolation bearings do not have tensile devices, which cannot resist the huge tensile force generated by the swaying or even overturning of high-rise buildings in earthquakes.

The utility model patent with the authorized notification number CN200943268Y discloses an "improved three-dimensional shock-isolating device". In the rubber pad body, at least three flexible tensile members are evenly distributed circularly around the symmetrical center line. The middle part of the flexible tensile members 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 extension length of the flexible tensile member is not greater than the stretching elastic deformation of the rubber pad; the lower connecting plate of the laminated rubber shock-isolation bearing is arranged on the composite disc spring, and the upper end of the guide sleeve extends inward An annular flange clamps the lower connecting plate inside, and an annular buffer pad is arranged between the annular flange and the lower connecting plate. In the three-dimensional shock-isolation device, the flexible tensile member plays a tensile role, and the flexible tensile member is straightened when the horizontal deformation and upward deformation of the entire shock-isolation support are close to the design range of the rubber pad , into the state of tensile protection, to bear all the external tension, so as to effectively protect the overall structure of the rubber pad and the laminated rubber shock-isolation bearing from being damaged. However, this three-dimensional seismic isolation device still has the following deficiencies:

1. The flexible tensile member can only play a tensile role when the horizontal deformation and the upward deformation of the shock-isolation support reach a certain level, and the flexible tensile member does not have horizontal and vertical energy consumption. Function, can not improve the horizontal and vertical energy dissipation capacity of the isolation bearing.

2. The flexible tensile member is arranged in the rubber pad body of the laminated rubber shock-isolation bearing, which is inconvenient for maintenance and replacement. When the flexible tensile member is damaged, the entire bearing needs to be replaced, which is costly.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide an anti-overturning three-dimensional shock-isolation device. The horizontal and vertical energy dissipation capacity of the device, and at the same time, the tensile member is easy to maintain and replace when damaged, reducing the use cost.

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

An anti-overturning three-dimensional shock-isolation device, which is composed of a laminated rubber shock-isolation support and a composite disc spring shock-isolation support connected in series, and the upper and lower ends of the rubber pads of the laminated rubber shock-isolation support are set There are an upper sealing steel plate and a lower sealing steel plate, the upper sealing steel plate is provided with an upper connecting plate, and the lower sealing steel plate is provided with a lower connecting plate, and the lower connecting plate is located on the guide sleeve of the composite disc spring vibration isolation support Inside; the outer side of the upper end of the guide sleeve is fixedly connected with a top connecting plate, and a tensile member made of a steel plate is arranged between the upper connecting plate and the top connecting plate. The tensile member is bent into a bow shape, and its two The ends are respectively fixed on the upper joint plate and the top joint plate; the maximum horizontal deformation of the tensile member is greater than the horizontal shear elastic deformation of the rubber pad.

In the anti-overturning three-dimensional seismic isolation device of the present utility model, there are four tensile members, which are evenly distributed on the outer side of the rubber pad along the circumferential direction. In this way, the tensile member can play the role of tensile shock absorption in all horizontal directions, and at the same time, it can bear a balanced force when it is subjected to a vertical force.

In the anti-overturning three-dimensional seismic isolation device of the present utility model, the two ends of the tensile member are provided with fixed connecting blocks, and the fixed connecting blocks are connected to the upper connecting plate and the top connecting plate by screws. This facilitates secure attachment of the tensile members to the upper gusset and top gusset.

Compared with the prior art, the anti-overturning three-dimensional seismic isolation device of the present utility model has the following beneficial effects:

1. Since the tensile member is bow-shaped made of steel plates, when there is a small horizontal displacement and vertical displacement (that is, when the wind or small earthquake acts), the tensile member is in an elastic working state , increasing the stiffness of the seismic isolation device, can control the deformation of the building and the seismic isolation device when the small excitation (wind or small earthquake) acts. When a large horizontal displacement or vertical displacement occurs (moderately strong earthquake), the tensile member enters an inelastic state and consumes seismic energy, and the tensile member is straightened to resist the swaying or even overturning of high-rise buildings or structures in an earthquake The huge tensile force generated effectively protects the overall structure of the rubber pad and the laminated rubber shock-isolation bearing from being damaged, and acts as a "soft lock" for the deformation of the structure.

2. The tensile member is arranged on the outside of the rubber pad, which is convenient for installation and maintenance. When the tensile member is damaged, it can be easily replaced without replacing the entire device, reducing the cost of use.

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 schematic diagram of the deformation state of the embodiment shown in Fig. 1 under combined action of horizontal force and vertical pressure.

Fig. 3 is a schematic diagram of horizontal deformation of the tensile connector in the embodiment shown in Fig. 1 .

Fig. 4 is a schematic diagram of lateral deformation of the tensile connector in the embodiment shown in Fig. 1 .

Fig. 5 is a schematic diagram of vertical deformation of the tensile connector in the embodiment shown in Fig. 1 .

detailed description

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 the utility model is not limited by the embodiments described.

Referring to Fig. 1 and Fig. 2, the anti-overturning three-dimensional seismic isolation device of the present invention is composed of a laminated rubber isolation support 20 and a composite disc spring isolation support 14 connected in series. Wherein, the laminated rubber shock-isolation bearing 20 includes a rubber pad 22 as the anti-seismic main body. The rubber pad 22 is composed of a layer of rubber 5 and a layer of steel plate 4 alternately stacked and then molded and vulcanized. A protective rubber layer 7 is naturally formed around it. The upper and lower ends of the rubber pad 22 are provided with an upper sealing steel plate 3 and a lower sealing steel plate 8, the upper sealing steel plate 3 is fixedly connected with the upper connecting plate 1 by the countersunk head screw 2, and the lower sealing steel plate 8 is fixed by sinking The head screw 2 is fixedly connected with a lower connecting plate 21, and the upper connecting plate 1 is provided with a reserved hole 13 connected with the building. The composite disc spring shock-isolation support 14 includes a guide sleeve 11, and the disc springs 12 are combined and then compounded in the guide sleeve 11; the bottom of the guide sleeve 11 is fixedly connected with a bottom connecting plate 16 by a bolt 19, and the bottom connecting plate 16 is provided with the reserved hole 13 that is connected with foundation all around.

Referring to FIG. 1 and FIG. 2 , the lower coupling plate 21 is located in the guide sleeve 11 of the composite disc spring shock-isolating support 14 and is supported on the uppermost disc spring 12 . An annular flange 17 extends inwardly from the upper end of the guide sleeve 11 to cover the lower coupling plate 21 , and an annular buffer pad 10 is arranged between the annular flange 17 and the lower coupling plate 21 . The annular flange 17 is formed by welding a clamp cover 18 on the upper end of the guide sleeve 11 , and the annular buffer pad 10 is an annular elastic rubber pad 22 .

Referring to FIG. 1 and FIG. 2 , the outer upper end of the guide sleeve 11 is fixed with a top connecting plate 9 by welding. The top connecting plate 9 is ring-shaped, and its outer edge is flush with the upper connecting plate 1 . A tensile member 6 made of a steel plate is arranged between the upper connecting plate 1 and the top connecting plate 9. The tensile member 6 is bent into a bow shape, and its two ends are respectively fixed on the upper connecting plate 1 and the top connecting plate 9. Above; the maximum horizontal deformation of the tensile member 6 is greater than the horizontal shear elastic deformation of the rubber pad 22, thereby protecting the rubber pad 22 from damage.

Referring to Fig. 1 and Fig. 2, there are four tensile members 6, which are evenly distributed on the outside of the rubber pad 22 along the circumferential direction, so that the tensile members 6 can play a role of tensile resistance and overturning resistance in all horizontal directions. At the same time, the force is balanced when it is subjected to a vertical force. The two ends of the tensile member 6 are provided with fixed connecting blocks 15, and the fixed connecting blocks 15 are connected to the upper connecting plate 1 and the top connecting plate 9 by screws, so that the tensile member 6 is connected with the upper connecting plate 1 and the top. A fixed connection between the connecting plates 9. The tensile member 6 is formed by cold-bending mild steel strips, and the mild steel has an obvious yield point and good plasticity.

Referring to Fig. 3 and Fig. 4, when the horizontal displacement occurs, the lower end of the tensile member 6 is fixed, and the remaining parts are deformed in the horizontal direction. If the direction of the horizontal displacement is parallel to the plane where the arched tensile member 6 is located, then the tensile The member 6 deforms in its plane, as shown in Figure 3; if the direction of horizontal displacement is not parallel to the plane of the arched tensile member 6, then the tensile member 6 deforms laterally, as shown in Figure 4. Referring to Fig. 5, when the vertical displacement occurs, the lower end of the tensile member 6 is fixed, and the upper end is deformed upward. When the displacement is small, the tensile member 6 is in an elastic working state; and when the displacement is large (moderately strong earthquake), the tensile member 6 enters an inelastic state and consumes seismic energy, and the tensile member 6 It is straightened and enters the state of tensile protection to bear all the external tension to resist the huge tension generated by the swaying or even overturning of high-rise buildings or structures in earthquakes.

Claims (3)

1. an antidumping three-dimensional isolation device, this device is by laminated rubber damping bearing and compound disc spring Shock isolating pedestal concatenation is constituted, and the two ends up and down of the rubber blanket of described laminated rubber damping bearing are provided with envelope steel Plate and lower envelope steel plate, described upper envelope steel plate is provided with joint cover, and lower envelope steel plate is provided with lower joint cover, Described lower joint cover is positioned at the fairlead of compound disc spring shock isolating pedestal；It is characterized in that, described Top connection plate it is fixedly connected with, between described upper joint cover and top connection plate outside the upper end of fairlead Being provided with the tension member being made up of steel plate, this tension member bends to arch, and its two ends are separately fixed at the first line of a couplet In knot tying and top connection plate；The horizontal maximum deformation quantity of described tension member is cut more than the level of rubber blanket Cut elastic deformation amount.

A kind of antidumping three-dimensional isolation device the most according to claim 1, it is characterised in that described Tension member is four, is circumferentially evenly distributed on the outside of rubber blanket.

A kind of antidumping three-dimensional isolation device the most according to claim 1 and 2, it is characterised in that institute The two ends of the tension member stated are provided with fixing contiguous block, and this fixing contiguous block is connected by screw at upper joint cover With on top connection plate.