CN202298447U - Micro particle damping support - Google Patents

Abstract

The utility model relates to a micro particle damping and shock absorbing support. It includes upper and lower seat plates, stoppers, buffer plates, intermediate plates, wear-reducing plates, sliding stubs, micro-particle damping system devices (including fixed blocks, micro-particle damping materials and sliding sleeves). The micro-particle damping system is arranged on both lateral sides of the lower seat plate, the fixed block is reliably connected with the lower seat plate, the sliding sleeve is installed on the fixed block, the micro-particle damping material is filled in the sliding sleeve, and the upper end of the sliding short column is assembled with the upper seat plate OK, the lower end of the sliding stud is assembled with the sliding sleeve. Under the action of an earthquake, the utility model works simultaneously with frictional energy consumption and microparticle damping energy consumption, which can effectively reduce the seismic response; when a large longitudinal horizontal displacement exceeds the limit, the longitudinal stopper and the lower seat plate contact to limit the upper part The structure continues to displace, and when the displacement value of the lateral movement of the support exceeds the design value, the lateral stopper contacts the lower seat plate and starts to limit the position, which improves the phenomenon of lateral limit failure caused by the vertical combined vibration.

Description

Micro particle damping shock absorber

technical field

The utility model belongs to the technical fields of civil engineering and earthquake engineering, and in particular relates to a novel shock-absorbing and isolating support which combines the effects of frictional energy consumption and damping energy consumption; in particular, it relates to a micro-particle damping and shock-absorbing support.

Background technique

In recent decades, seismic-isolation bearings, as an important measure of bridge seismic isolation, have received more and more attention and achieved significant development. Basin rubber bearings, lead rubber bearings, and FPS (Friction Pendulum System) have gradually been widely used and become the mainstream of bridge bearings at home and abroad. Among several types of shock-absorbing and isolating bearings, the horizontal displacement between the upper and lower seat plates cannot be effectively buffered when the basin-type rubber bearing encounters an earthquake or a major vibration shock; the lead-core rubber bearing consumes energy Strong capacity, the secondary internal force of the bearing caused by creep deformation such as temperature and creep is small, but the shear performance of the bearing is greatly affected by the vertical load, and with the increase of the lead core, the self-restoring ability of the bearing gradually weakened, and cannot effectively reduce and isolate earthquakes in earthquakes with multi-spectrum effects; FPS (Friction Pendulum System) has strong self-recovery ability and stable frictional energy dissipation performance, but it will cause vertical vibration at the beam end during the process of frictional energy consumption. A secondary internal force is generated by the displacement.

In view of the shortcomings of the above-mentioned different types of bearings, on the basis of ordinary spherical bearings and basin-type seismic bearings, we combine the principle of damper devices often used in the seismic design of large bridges and new micro-particle damping materials , to conceive and design a kind of microparticle damping shock-absorbing bearing.

At present, the commonly used pot-type anti-seismic bearings and spherical steel anti-seismic bearings in China rely on frictional energy consumption at the contact surface when the upper and lower seat plates slide against each other under the action of an earthquake, thereby consuming the energy of the earthquake and reducing the The earthquake response of the structure plays the role of shock absorption and isolation. However, there are still some deficiencies in the above-mentioned scheme. When encountering an earthquake or a major vibration shock, the horizontal displacement between the upper and lower seat plates cannot be effectively buffered only by relying on frictional energy consumption. Therefore, it is necessary to further improve the bridge bearings in the prior art.

Contents of the invention

The purpose of the utility model is to provide a micro-particle damping shock-absorbing support that can effectively buffer the horizontal displacement between the upper and lower seat plates of the support under the action of strong earthquakes and can effectively consume energy.

In order to achieve the above purpose, the solution adopted by this utility model is: to absorb the advantages of the previous pot-type seismic bearing (or spherical steel shock-absorbing bearing), use frictional energy consumption, and reduce seismic response; on this basis, adopt simultaneous micro Particle damping energy dissipation works together with frictional energy dissipation to reduce earthquake response; longitudinal stoppers are used to limit the longitudinal displacement of the support, and transverse stoppers are used to limit the lateral displacement of the support to enhance the seismic capacity and safety factor.

The micro-particle damping and shock-absorbing support proposed by the utility model includes a lower seat plate with a seat body and a seat cavity, an upper seat plate, and a first buffer plate, a middle plate, and a damping plate stacked in the seat cavity in sequence. The grinding plate and the second buffer plate also include a sliding short column, a longitudinal stopper, a transverse stopper and a microparticle damping system. A group of longitudinal stoppers are respectively anchored under the longitudinal sides of the upper seat plate. A set of transverse stoppers are anchored below each lateral side, and the heights of the longitudinal stoppers and the transverse stoppers should be able to ensure proper contact with the lower seat plate when the support is displaced; the microparticle damping system is set on the lower On both lateral sides of the seat plate, the micro-particle damping system includes a fixed block, a micro-particle damping material and a sliding sleeve; The material is filled in the sliding sleeve, the two sides of the upper seat plate are grooved, the upper end of the sliding short column is fixed in the groove of the upper seat plate, and the lower end of the sliding short column is fixed with the sliding sleeve.

In the utility model, the particle damping material is made of metal, small metal particles or other composite new materials.

In the present utility model, a third buffer plate is bonded to the inner side of the longitudinal block.

In the utility model, a fourth buffer plate is bonded to the inner side of the transverse block.

In the utility model, a sealing ring is provided between the first buffer plate and the middle plate, and a surface of the middle plate facing the wear-reducing plate forms a sliding plate cavity.

In the utility model, each of the four corners of the lower seat plate is provided with a lower seat plate bolt hole, and the lower seat plate is fixed to the embedded parts on the pier through the lower seat plate bolts and the lower seat plate bolt holes.

In the utility model, each of the four corners of the upper seat plate is provided with upper seat plate bolt holes, and the upper seat plate is fixed to the bottom surface of the main beam through the upper seat plate bolts and the upper seat plate bolt holes.

In the utility model, the shapes of the upper seat plate, the lower seat plate and the stopper are all rectangular.

In the utility model, the third buffer plate is a rubber plate, which is bonded on the inner side of the upper stopper through a high molecular polymer material.

In the utility model, a sealing ring is provided between the first buffer plate and the middle plate, the first buffer plate is a rubber plate, and a surface of the middle plate facing the wear-reducing plate forms a slide plate cavity, and the middle plate The board is a steel plate.

In the utility model, the wear-reducing plate is arranged in the slide plate cavity, and the wear-reducing plate is a polytetrafluoroethylene plate or a polymer wear-resistant plate.

In the utility model, the second buffer plate is a stainless steel plate.

In the utility model, when in use, the micro-particle damping shock-absorbing bearing is fixed by the bolts passing through the four corner bolt holes of the lower seat plate and the embedded parts on the pier.

The advantage of the technical solution provided by the utility model:

1) Give full play to the advantages of the pot-type seismic bearing (or spherical steel shock-absorbing bearing), under the action of the vertical load transmitted by the beam end, the vertical bearing capacity is large; the beam end can rotate flexibly; the frictional energy dissipation performance is stable.

2) Under earthquake action, when the bearing slides, frictional energy dissipation and microparticle damping energy dissipation play a role simultaneously, which effectively reduces the seismic response of the structure and enhances its seismic capacity. Among them, the micro-particle damping system plays a full role, and the movable sleeve is filled with an appropriate amount of small metal or non-metallic particles. When the sliding of the support drives the sliding of the short column, the micro-particles and micro-particles in the cavity are caused. The continuous impact and friction between the particles and the wall of the cylinder exchange momentum and consume the vibration energy of the structure, so that the vibration of the structure is rapidly attenuated to achieve the purpose of shock absorption.

3) Compared with the conventional damper + support, the micro particle damping shock absorber has outstanding advantages: it combines frictional energy consumption and damping energy consumption, avoiding the previous use of the support and damper as two components Supporting use, good economy; the use of micro-particle damping materials (metal or non-metallic small particles) can significantly improve structural damping, and the structural damping can be flexibly adjusted by using different micro-particle damping materials; can adapt to harsh environments (such as high temperature, severe cold, etc.), strong durability.

4) When the displacement of the support exceeds the allowable value, the stopper participates in limiting the displacement of the support. By rationally designing the position of the stopper, the limit ability of the support is improved, and the anti-seismic ability is enhanced.

5) It can effectively control the displacement in three directions, especially to improve the phenomenon of vertical and horizontal limit failure that may be caused by vertical combined vibration.

In a word, the utility model is applicable to buildings such as railway bridges, highway bridges, urban viaducts and various large-scale suspension structures, and acts as a shock absorber.

Description of drawings

Fig. 1 is a schematic diagram of the horizontal implementation assembly structure of the utility model.

Fig. 2 is a schematic diagram of the longitudinal implementation and assembly structure of the utility model.

Fig. 3 is a top view of the utility model structure.

Numbers in the figure: 1 is the lower seat plate, 2 is the upper seat plate, 3 is the first buffer plate, 4 is the middle plate, 5 is the wear-reducing plate, 6 is the second buffer plate, 7 is the sliding short column, 8 is the longitudinal stopper , 9 is the micro particle damping material, 10 is the slide plate cavity, 11 is the third buffer plate, 12 is the bolt hole of the lower seat plate, 13 is the fixed block of the damping system, 14 is the transverse stopper, 15 is the bolt of the lower seat plate, 16 is the upper seat Plate bolts, 17 damping system sliding sleeves, 18 seal rings, 19 seat bodies, 20 fourth buffer plates, 21 seat chambers, and 22 upper seat plate bolt holes.

Detailed ways

In order to enable the examiners of the patent office, especially the public, to more clearly understand the technical essence and beneficial effects of the present utility model, the applicant will describe in detail below in conjunction with the accompanying drawings in the form of embodiments, but none of the descriptions of the embodiments is As for the limitation of the solution of the utility model, any equivalent transformation made according to the idea of the utility model, which is only in form but not substantive, should be regarded as the category of the utility model.

Embodiment 1: Please refer to Fig. 1 and Fig. 2, a rectangular lower seat plate 1 is fixed with the pier of the bridge under the use state, for this reason, four corners of the lower seat plate 1 are respectively provided with lower seat plate bolt holes 12 , use the lower seat plate bolts 15 to fix the lower seat plate 1 and the embedded parts on the pier. A ring-shaped seat cavity 21 is hollowed out in the center of the upward facing side of the lower seat plate 1, and the first buffer plate 3, the middle plate 4, the wear-reducing plate 5 and the The second buffer plate 6. The first buffer plate 3 is a rubber plate, the middle plate 4 is a steel plate, the wear-reducing plate 5 is a polytetrafluoroethylene plate or a polymer wear-resistant plate, and the second buffer plate 6 is a stainless steel plate. Wherein, a sealing ring 18 is arranged between the first buffer plate 3 and the middle plate 4 , and the middle plate 4 forms a slide plate cavity 10 , and the wear reducing plate 5 is located in the slide plate cavity 10 .

A rectangular upper seat plate 2 is fixed to the bottom surface of the main girder of the bridge (also called the beam body of the bridge) in the state of use. For this reason, upper seat plate bolt holes 22 are respectively opened at the four corners of the upper seat plate 2. Bolt 16 fixes the upper seat plate 2 and the bottom surface of the girder.

As shown jointly by Fig. 1 and Fig. 2, longitudinal stoppers 8 are provided on both longitudinal sides of the upper seat plate 2, and the longitudinal stoppers 8 are reliably connected with the upper seat plate 2; This lateral block 14 is reliably connected with the upper seat plate 2 .

The longitudinal stopper 8 is anchored on the upper seat plate 2, and its height should ensure proper contact with the lower seat plate 1 when the support longitudinally shifts, so as to successfully limit the position. The third buffer plate 11 is bonded to the inner side of the longitudinal block 8 with an organic polymer bonding material.

The transverse stopper 14 is anchored on the upper seat plate 2, and its height should ensure proper contact with the lower seat plate 1 when the support is displaced laterally, so as to effectively prevent the occurrence of falling beams. The position of the transverse stopper 14 should be in accordance with The maximum lateral horizontal displacement allowed by the design of the upper and lower seat plates of the support is determined, and the fourth buffer plate 20 is bonded to the inner side of the lateral stopper 14 with an organic polymer bonding material.

As the main technical points of the present utility model, the micro-particle damping system is arranged on the lateral sides of the lower seat plate 1, the damping system fixed block 13 is reliably connected with the lower seat plate 1, and the damping system sliding sleeve 17 is installed on the fixed block. The damping material (metal or non-metal small particles) is filled in the sliding sleeve 17. At the same time, the upper end of the sliding short column 7 is assembled with the upper seat plate 2, and the lower end of the sliding short column is assembled with the sliding sleeve. During the sliding process, the sliding sleeve The inner sleeve of the sliding sleeve is fixed on the fixed block, and the outer sleeve slides with the sliding short rod. The sliding short rod stirs the micro-particle damping material. The outer sleeve of the sliding sleeve must be combined with the inner sleeve to prevent the micro-particles from Leakage of damping material.

Under earthquake action, when the bearing slides, frictional energy dissipation and microparticle damping energy dissipation play a role at the same time, which effectively reduces the seismic response of the structure and enhances the seismic capacity of the bridge. In addition, when the displacement value of the longitudinal movement of the support exceeds a certain design value, the buffer plate 11 on the longitudinal stopper 8 contacts the lower seat plate and starts to limit the position. At the same time, when the displacement value of the lateral movement of the support exceeds a certain design value, The buffer plate 20 on the transverse stopper 14 contacts with the lower seat plate to start limiting.

As a modification of the embodiment of the present invention, the support that cooperates with the microparticle damping system device can be a basin-type support, a ball-type support, or other types and indicators.

As another modification of the embodiment of the present invention, the micro-particle damping system device can be arranged on both sides of the horizontal plane, mainly to enhance the energy dissipation capacity of the support during longitudinal sliding; it can also be arranged on both sides of the longitudinal direction, mainly to enhance the horizontal The energy dissipation capacity of the support when sliding; at the same time, it can also be arranged on both sides of the vertical and horizontal sides at the same time, and at the same time enhance the energy dissipation capacity of the support when sliding vertically and horizontally.

As another transformation of the embodiment of the present invention, the size of the microparticle damping system device (parameters such as microparticle type, particle size, filling rate, and particle mass ratio), sliding short columns (parameters such as quantity and strength) and the stopper , material strength, elastic modulus, etc. can be designed and adjusted according to needs.

The above-mentioned descriptions of the embodiments are not limitations on the scheme of the utility model. Therefore, the scope of protection of the present invention is not limited to the above-mentioned embodiments. Various modifications and improvements, as long as the micro-particle damping system device of the present invention is used on the support structure, should be considered as falling within the protection scope of the present invention.

Claims (7)

1. microparticle damping shock absorption bearing; Comprise and have pedestal (19) and pedestal (19) have following seat board (1), the upper base plate (2) in a chamber (21) and be stacked and placed on first buffer board (3), intermediate plate (4), wearing plate (5) and second buffer board (6) in the said seat chamber (21) successively; It is characterized in that: also include slip short column (7), vertical block (8), horizontal block (14) and microparticle damping system; Each anchoring of vertical down either side of said upper base plate (2) has one group of vertical block (8); Each anchoring of horizontal every side-lower of said upper base plate (2) has one group of horizontal block (14), and the height of vertical block (8) and horizontal block (14) all should be able to guarantee when bearing is shifted, can suitable contacting be arranged with following seat board (1); Said microparticle damping system is arranged on down seat board (1) both lateral sides, and said microparticle damping system comprises fixed block (13), microparticle damping material (9) and sliding sleeve (17); Fixed block (13) is symmetrically fixed on down seat board (1) top; Sliding sleeve (17) two ends are installed on respectively on the fixed block (13); Microparticle damping material (9) is filled in sliding sleeve (17) lining; Upper base plate (2) both sides fluting, the upper end of slip short column (7) is fixed in the groove of upper base plate (2), and the outer sleeve of the lower end of slip short column (7) and sliding sleeve (17) is fixed.

2. microparticle damping shock absorption bearing according to claim 1 is characterized in that said particle damping material (9) is made up of metal, small metal particles or other composite materials is processed.

3. microparticle damping shock absorption bearing according to claim 1 is characterized in that said vertical block (8) inboard is bonded with the 3rd buffer board (11).

4. microparticle damping shock absorption bearing according to claim 1 is characterized in that horizontal block (14) inboard is bonded with the 4th buffer board (20).

5. microparticle damping shock absorption bearing according to claim 1 is characterized in that being provided with sealing ring (18) between said first buffer board (3) and the intermediate plate (4), and said intermediate plate (4) constitutes a slide plate chamber (10) towards a surface of said wearing plate (5).

6. microparticle damping shock absorption bearing according to claim 1; It is characterized in that four bights of seat board (1) respectively offer down seat board bolt hole (12) down, following seat board (1) is through seat board bolt (15) and following seat board bolt hole (12) are fixed with the built-in fitting on the bridge pier down.

7. microparticle damping shock absorption bearing according to claim 1 is characterized in that four bights of upper base plate (2) respectively offer upper base plate bolt hole (22), and upper base plate (2) is fixed with the girder bottom surface through upper base plate bolt (16) and upper base plate bolt hole (22).

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