CN211447998U - Staged sliding double-sliding-surface shock insulation support - Google Patents
Staged sliding double-sliding-surface shock insulation support Download PDFInfo
- Publication number
- CN211447998U CN211447998U CN201922093925.6U CN201922093925U CN211447998U CN 211447998 U CN211447998 U CN 211447998U CN 201922093925 U CN201922093925 U CN 201922093925U CN 211447998 U CN211447998 U CN 211447998U
- Authority
- CN
- China
- Prior art keywords
- sliding
- support plate
- plate
- staged
- sliding block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of building and bridge shock insulation, and specifically discloses a staged sliding double-sliding-surface shock insulation support, which comprises an upper support plate, a middle slider and a lower support plate which are sequentially connected in a sliding manner from top to bottom, wherein the upper support plate and the lower support plate are both provided with a limiting basin ring which is used for limiting the sliding range of the middle slider; the friction coefficient of the contact surface of the middle sliding block and the upper support plate is larger than that of the contact surface of the middle sliding block and the lower support plate. The utility model discloses a set up different coefficient of friction, realize triggering stage by stage, have the adaptivity to the earthquake operating mode, possess good shock insulation performance in middle and small earthquake, the energy consumption ability is outstanding and can avoid causing structural damage because of support relative displacement is too big in big earthquake.
Description
Technical Field
The utility model belongs to the technical field of building and bridge shock insulation, more specifically relates to a two sliding surface shock insulation support of stage slip.
Background
The seismic isolation technology is one of the most effective measures for reducing the earthquake hazard of the structure, and the basic idea is to arrange a flexible seismic isolation layer with enough reliability between a foundation and an upper structure so as to prolong the natural vibration period of the structure and increase damping to reduce the transmission of earthquake energy to the upper structure. The technology is tested and theoretically demonstrated at present, and has outstanding earthquake resistance and economical efficiency.
Traditional sliding plate support is a shock insulation equipment that is comparatively practical, but in actual engineering, because friction surface coefficient of friction is the constant, does not have the discernment ability to different earthquake operating modes to only be single slip shock insulation system, support plane size need make great in order to satisfy the power consumption demand that slides, this makes it receive the restriction in engineering application, especially under big effect of shaking, the too big phenomenon of shock insulation layer displacement can appear in traditional sliding plate support, earthquake response consequently probably is enlargied.
Therefore, people begin research on the friction pendulum support, at present, domestic theoretical research and engineering application are mostly the scheme of adopting multistage friction sliding surfaces such as the double-concave friction pendulum support and the like, research results are relatively perfect, but the friction pendulum has the problem of additional vertical displacement change, the vertical displacement change generated in the working process of the support can generate large adverse effect on a structural body, in addition, the production of the double-concave friction plate is relatively complex, the curvature control has large influence on shock insulation, and the production cost is also relatively high. Accordingly, the technical requirements for developing a shock insulation support which has good shock insulation effect in medium and small shocks, has strong energy consumption capability in large shocks, can effectively control displacement, is simple and convenient to produce and has a size suitable for practical engineering application exist in the field.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a slip couple of sliding surface shock insulation support in stages, its aim at through setting up different coefficient of friction, realizes triggering stage by stage, has the adaptivity to the earthquake operating mode, possesses good shock insulation performance in middle and small earthquake, and the energy consumption ability is outstanding and can avoid causing the structural damage because of support relative displacement is too big in big earthquake.
In order to achieve the above object, the utility model provides a two sliding surface isolation bearing of stage slip, include from last to lower sliding connection's in proper order upper bracket board, middle slider and bottom suspension bedplate, wherein:
the upper support plate and the lower support plate are both provided with limiting basin rings, and the limiting basin rings are used for limiting the sliding range of the middle sliding block; the friction coefficient of the contact surface of the middle sliding block and the upper support plate is larger than that of the contact surface of the middle sliding block and the lower support plate.
Preferably, the middle slider comprises an upper sliding plate, a slider main body and a lower sliding plate which are fixedly connected in sequence from top to bottom.
As a further preferred, the slider body is formed by stacking a plurality of rubber layers and steel plates in a staggered manner.
Further preferably, the lower seat plate includes a lower base and a mirror-finished stainless steel plate disposed above the lower base, and the upper seat plate includes an upper base and a mirror-finished stainless steel plate disposed below the upper base.
More preferably, a friction coefficient of a contact surface between the intermediate slider and the upper support plate is 1.5 times or more a friction coefficient of a contact surface between the intermediate slider and the lower support plate.
Further preferably, the friction coefficient of the contact surface of the intermediate slider and the lower seat plate gradually increases from the middle to the outside, and the friction coefficient of the contact surface of the intermediate slider and the upper seat plate gradually increases from the middle to the outside.
As a further preferred option, the inner wall of the limiting basin ring is provided with an elastic material.
Preferably, the lower support plate and the upper support plate are provided with through holes or anchor bolts at the edges thereof.
Generally, through the utility model above technical scheme who thinks compares with prior art, mainly possesses following technical advantage:
1. the utility model discloses set up to different coefficient of friction between middle slider and upper bracket board, undersetting board contact surface, adopt two sliding surface stage by stage slip mechanism, realized stage by stage adaptive control, possess good shock insulation performance in middle and small earthquake, the energy consumption ability is outstanding and can avoid causing the structrual damage because of support relative displacement is too big in big earthquake.
2. The utility model discloses a shock insulation support simple structure just benefits from the setting of two sliding surfaces, and the plane size is compared traditional slide support littleer, and occupation space is little, and the price/performance ratio is higher.
3. The utility model discloses middle slider and bottom suspension board contact surface coefficient of friction outwards crescent from the centre, make isolation bearing's damping and rigidity change along with the support displacement, not for the definite value, become rigidity and variable damping characteristics make isolation bearing's engineering suitability stronger.
Drawings
FIG. 1 is a top view of a staged sliding double-sliding-surface seismic isolation bearing provided by an embodiment of the present invention;
FIG. 2 is a front view of the staged sliding dual-sliding-surface seismic isolation bearing provided by the embodiment of the invention;
FIG. 3 is a sectional view of a staged sliding double-sliding-surface seismic isolation bearing provided by the embodiment of the invention;
fig. 4 is a plan view of the first sliding surface in the embodiment of the present invention;
fig. 5 is a bottom view of a fourth sliding surface according to an embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1-lower support plate, 2-middle slide block, 3-upper support plate, 11-lower base, 12-lower limiting basin ring, 21-slide block main body, 22-lower slide plate, 23-upper slide plate, 31-upper base, 32-upper limiting basin ring, 101-first slide surface, 201-second slide surface, 202-third slide surface, 301-fourth slide surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The staged sliding double-sliding-surface shock insulation support provided by the embodiment of the utility model comprises an upper support plate 3, a middle slider 2 and a lower support plate 1 which are sequentially connected in a sliding manner from top to bottom as shown in figures 1 to 3, wherein the middle slider 2 can slide between the upper support plate 3 and the lower support plate 1, an upper limiting basin ring 32 is arranged below the upper support plate 3, a lower limiting basin ring 12 is arranged above the lower support plate 1, and the limiting basin ring is used for limiting the sliding range of the middle slider 2; the friction coefficient of the contact surface of the middle slide block 2 and the upper support plate 3 is larger than that of the contact surface of the middle slide block 2 and the lower support plate 1; all be provided with through-hole or crab-bolt on the border of bottom suspension bedplate 1 and upper bracket board 3 for on fixed to the external object with the isolation bearing.
Specifically, the middle slide block 2 comprises an upper slide plate 23, a slide block main body 21 and a lower slide plate 22 which are fixedly connected from top to bottom in sequence, the surface of the upper end of the upper slide plate 23, which is in contact with the upper support plate 3, is a third slide surface 202, and the surface of the lower end of the lower slide plate 22, which is in contact with the lower support plate 1, is a second slide surface 201; the slider main body 21 is formed by mutually and alternately stacking a plurality of layers of rubber and steel plates, and the upper sliding plate 23 and the lower sliding plate 22 are polytetrafluoroethylene plates, modified polytetrafluoroethylene plates or ultrahigh molecular weight polyethylene plates;
the lower support plate 1 comprises a lower base 11 and a mirror surface stainless steel plate arranged on the lower base 11, wherein the mirror surface of the upper end of the mirror surface stainless steel plate, which is contacted with the lower sliding plate 22, is a first sliding surface 101; the upper support plate 3 comprises an upper base 31 and a mirror surface stainless steel plate arranged below the upper base 31, wherein the mirror surface of the lower end of the mirror surface stainless steel plate, which is in contact with the upper sliding plate 23, is a fourth sliding surface 301; different roughness can be constructed in different radius ranges by polishing or paving different materials on the mirror surface stainless steel plate;
the plane size of isolation bearing confirms according to the displacement demand of structure when different earthquake magnitudes, and the displacement demand when the magnitude is less should be satisfied in the displacement ability of lower bearing board 1, and the displacement demand when the magnitude is great should be satisfied in the displacement ability of upper bracket board 3.
Preferably, the first sliding surface 101 and the second sliding surface 201 are horizontal planes so that the intermediate slider 2 can slide in the lower seat plate 1 with full contact surface pressure, and the third sliding surface 202 and the fourth sliding surface 301 are horizontal planes so that the intermediate slider 2 can slide in the upper seat plate 3 with full contact surface pressure; elastic materials are arranged on the inner walls of the upper limiting basin ring 32 and the lower limiting basin ring 12, so that the upper limiting basin ring and the middle sliding block 2 are in elastic contact, and the buffering effect is achieved.
Furthermore, according to the actual bearing load and the anti-seismic requirement of the support, the friction coefficient of the contact surface of the middle slide block 2 and the upper support plate 3 is more than 1.5 times of the friction coefficient of the contact surface of the middle slide block 2 and the lower support plate 1, so that staged sliding is ensured.
Furthermore, the friction coefficient of the contact surface between the middle slider 2 and the lower support plate 1 gradually increases from the middle to the outside, and the friction coefficient of the contact surface between the middle slider 2 and the upper support plate 3 gradually increases from the middle to the outside, that is, the friction force applied to the support gradually increases with the increase of the relative displacement, and the support rigidity also increases.
The staged sliding double-sliding-surface shock isolation support comprises two stages:
in the first stage, when the magnitude of vibration is small, the dynamic response of an upper structure is a main control target, the relative displacement of the support is correspondingly small, and because the friction coefficient between the middle slide block 2 and the lower support plate 1 is small, the middle slide block 2 slides in the lower support plate 1, and the middle slide block 2 does not slide relative to the upper support plate 3, namely the middle slide block 2 drives the upper support plate 3 to slide in the lower support plate 1, at the moment, the support has small horizontal rigidity and low friction coefficient, so that the support has excellent shock insulation capability; in the second stage, when the magnitude of the shock is large, the middle sliding block 2 slides in the lower support plate 1 to reach the position limited by the lower limiting basin ring 12, the middle sliding block 2 slides in the upper support plate 3, and is finally limited by the upper limiting basin ring 32, so that the excessive development of the relative displacement of the support in the large shock can be effectively controlled, the sufficient energy consumption capability of the support is ensured, and the dynamic response of the upper structure cannot be too large.
The staged variable friction design enables the support to have self-adaptive capacity to earthquake loads, can be suitable for different earthquake conditions, and takes countermeasures in stages according to earthquake intensity, so that the two-stage design idea of the building earthquake resistance design specification in China is met, and the performance of the traditional sliding plate support is effectively improved.
The following are specific examples:
example 1
The lower support plate 1 and the upper support plate 3 are made of Q345 steel, the slider main body 21 is made of steel plate laminated rubber, the lower slider 22 and the upper slider 23 are made of ultra-high molecular weight polyethylene (UHMW-PE), the friction coefficient of the contact surface of the middle slider 2 and the lower support plate 1 is 0.03, and the friction coefficient of the contact surface of the middle slider 2 and the upper support plate 3 is 0.06;
after the lower support plate 1 and the upper support plate 3 are respectively connected with a foundation and a building pillar or a bridge pier and a bridge, the gravity load borne by the upper support plate 3 is transmitted to the middle sliding block 2, when the seismic load is generated, in the sliding process of a first stage, the lower support plate 1 transmits the shearing force generated by the ground vibration to the first sliding surface 101, in the sliding process of a second stage, the middle sliding block 2 is limited by the lower limiting basin ring 12 of the lower support plate, the first sliding surface 101 and the second sliding surface 201 are limited in sliding, and the middle sliding block 2 transmits the shearing force generated by the ground vibration to the fourth sliding surface 301; through stress analysis, the relation between the horizontal force and the displacement of the sliding block in the whole process is obtained as follows:
wherein F is the resultant force of the slide block in the horizontal direction, P is the upper structure load, x is the relative displacement of the support, the mass of the middle slide block can be ignored, sgn is a sign function related to the speed of the support slide block, and mu (x) is a friction coefficient; in this embodiment:
example 2
The lower support plate 1 and the upper support plate 3 are made of Q345 steel, the slider main body 21 is made of steel plate laminated rubber, and the lower sliding plate 22 and the upper sliding plate 23 are made of modified polytetrafluoroethylene plates; as shown in FIG. 4, the first sliding surface 101 is divided into 2 regions, and the friction coefficient μ is observed at the center portion10.02, coefficient of friction of peripheral portion μ20.04, as shown in fig. 5, the friction coefficient μ of the fourth sliding surface 30130.07; then, in the same manner as in example 1, according to formulas (1) and (2), the present example was obtained:
it will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a two sliding surface shock insulation support of stage slip which characterized in that includes from last upper bracket board (3), middle slider (2) and undersetting board (1) to lower sliding connection in proper order, wherein:
limiting basin rings are arranged on the upper support plate (3) and the lower support plate (1) and are used for limiting the sliding range of the middle sliding block (2); the friction coefficient of the contact surface of the middle sliding block (2) and the upper support plate (3) is larger than that of the contact surface of the middle sliding block (2) and the lower support plate (1).
2. A staged sliding double-sliding-surface seismic isolation bearing according to claim 1, wherein the middle sliding block (2) comprises an upper sliding plate (23), a sliding block main body (21) and a lower sliding plate (22) which are fixedly connected from top to bottom.
3. A staged sliding double-sliding-surface seismic isolation mount as claimed in claim 2, wherein said slider body (21) is formed by stacking several layers of rubber and steel plates alternately.
4. A staged sliding double-slip surface seismic isolation bearing according to claim 1, wherein said lower bearing plate (1) comprises a lower pedestal (11) and a mirror surface stainless steel plate disposed above said lower pedestal (11), and said upper bearing plate (3) comprises an upper pedestal (31) and a mirror surface stainless steel plate disposed below said upper pedestal (31).
5. A staged sliding double-sliding-surface seismic isolation bearing according to claim 1, wherein the friction coefficient of the contact surface of the intermediate sliding block (2) and the upper bearing plate (3) is more than 1.5 times of the friction coefficient of the contact surface of the intermediate sliding block (2) and the lower bearing plate (1).
6. A staged sliding double-sliding-surface seismic isolation bearing as claimed in claim 1, wherein the friction coefficient of the contact surface of said intermediate sliding block (2) and said lower bearing plate (1) is gradually increased from the middle to the outside, and the friction coefficient of the contact surface of said intermediate sliding block (2) and said upper bearing plate (3) is gradually increased from the middle to the outside.
7. A staged sliding double-sliding-surface seismic isolation bearing as claimed in claim 1, wherein the inner wall of said limiting basin ring is provided with an elastic material.
8. A staged sliding double-sliding-surface seismic isolation bearing according to any one of claims 1 to 7, wherein the edges of the lower bearing plate (1) and the upper bearing plate (3) are provided with through holes or anchor bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093925.6U CN211447998U (en) | 2019-11-28 | 2019-11-28 | Staged sliding double-sliding-surface shock insulation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093925.6U CN211447998U (en) | 2019-11-28 | 2019-11-28 | Staged sliding double-sliding-surface shock insulation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211447998U true CN211447998U (en) | 2020-09-08 |
Family
ID=72316165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922093925.6U Active CN211447998U (en) | 2019-11-28 | 2019-11-28 | Staged sliding double-sliding-surface shock insulation support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211447998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319625A (en) * | 2021-11-25 | 2022-04-12 | 华中科技大学 | Shock isolation device for resisting earthquake in rare occurrence and building shock isolation method |
-
2019
- 2019-11-28 CN CN201922093925.6U patent/CN211447998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319625A (en) * | 2021-11-25 | 2022-04-12 | 华中科技大学 | Shock isolation device for resisting earthquake in rare occurrence and building shock isolation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103790106B (en) | There is the parallel connection type negative stiffness structures isolation effect vibration damping holder of disk spring | |
| CN2818612Y (en) | Self-resetting protected and shock-absorbing endergonic bearing of variable curve coefficient | |
| TWI604111B (en) | Three-dimensional direction shock absorber | |
| CN110258813B (en) | High-bearing-capacity tensile shock isolation device with bidirectional sliding support | |
| WO2019024552A1 (en) | Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing | |
| CN110258812B (en) | High-bearing-capacity tensile energy-consumption shock isolation device with multiple adjustable sliding surfaces | |
| WO2019029197A1 (en) | Eddy-current friction-pendulum seismic reduction and isolation support | |
| CN100478539C (en) | Vertical shock-absorbing stand with variable rigidity and damping | |
| CN103147393B (en) | Pulling-resistant friction isolation bearing for bridge | |
| CN1702248A (en) | Curvature variable self-reset and protection three-dimensional shock damping and insulation energy dissipating support | |
| CN211447998U (en) | Staged sliding double-sliding-surface shock insulation support | |
| CN109898681A (en) | A kind of high-bearing capacity tension energy consumption earthquake isolating equipment | |
| EP0583868B1 (en) | Vibration damping device | |
| CN112982706A (en) | Three-dimensional structure vibration reduction system based on inertial volume and application | |
| CN212001610U (en) | Three-dimensional shock insulation support of area friction pendulum-type | |
| CN110424547B (en) | Variable friction sliding shock insulation support | |
| CN116006012A (en) | Two-stage three-dimensional shock insulation and vibration reduction support | |
| CN210507815U (en) | Air spring-friction multidimensional vibration isolation support | |
| JP6482373B2 (en) | Seismic isolation structure | |
| JP2023509559A (en) | Three-dimensional anti-vibration support of double friction pendulum | |
| CN109881784B (en) | Cambered surface sliding type three-dimensional shock insulation support | |
| CN217580661U (en) | Three-dimensional shock insulation support | |
| CN114790785B (en) | Large-bearing-capacity high-energy-consumption three-dimensional shock insulation support suitable for building structure | |
| CN206828952U (en) | A kind of steel damps horizontal vibration absorption and isolation support | |
| CN112302188A (en) | Multistage shock-insulation rubber-sliding system support and shock insulation effect calculation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |