CN110424547B - Variable friction sliding shock insulation support - Google Patents
Variable friction sliding shock insulation support Download PDFInfo
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- CN110424547B CN110424547B CN201910556431.9A CN201910556431A CN110424547B CN 110424547 B CN110424547 B CN 110424547B CN 201910556431 A CN201910556431 A CN 201910556431A CN 110424547 B CN110424547 B CN 110424547B
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- support
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a variable-friction sliding shock insulation support, and relates to a support for shock insulation of a building engineering structure. The invention is arranged between a building structure needing shock insulation and a foundation, and a lower connecting plate is fixed on the foundation; a sliding plate having a horizontal upper plane and fixed to the lower connecting plate; the annular baffle ring is enclosed and fixed on the peripheral edge of the upper plane of the sliding plate; the bottom of the flexible support is fixed with a sliding block and is positioned in the center of the upper plane of the sliding plate, and the top of the flexible support is fixed with an upper connecting plate of a support; the top surface of the upper connecting plate is fixed at the bottom of the building structure, and the bottom surface of the upper connecting plate is fixedly connected with the top surface of the upper connecting plate of the support of the flexible support; the slide block is a polytetrafluoroethylene slide block or other material slide blocks. The invention can play the role of shock insulation of the common shock insulation support in medium and small shocks; during the macroseism, the support can slide to realize shock insulation and shock absorption effects, and the friction of sliding simultaneously can dissipate seismic energy, avoids the excessive deformation of support or even destroys.
Description
Technical Field
The invention relates to a support for shock insulation of a building engineering structure, in particular to a variable friction sliding shock insulation support.
Background
In the design of a building structure, earthquake disasters can be effectively relieved through a basic shock insulation technology. Seismic isolation of a foundation is generally achieved by placing a flexible device between a structure and the foundation, extending the period of the building structure to avoid a seismic energy concentration frequency section, and consuming seismic energy to reduce the seismic response of the structure.
According to the requirements of national standard GB50011-2010 building earthquake-proof design specifications, a rubber earthquake-proof support is usually adopted as an earthquake-proof device. The horizontal rigidity of the existing common rubber shock insulation support is fixed, namely, when the support deforms, the horizontal rigidity is fixed. If the rubber shock insulation support with higher horizontal rigidity is adopted in the building, when a medium-small earthquake occurs, the earthquake force borne by the support is possibly smaller than the minimum horizontal shearing force of the deformation of the support, the support cannot deform, and therefore the shock insulation and shock absorption effects cannot be achieved. If the building uses rubber shock-insulation supports with lower horizontal rigidity, when a large shock occurs, the earthquake force applied to the supports can be larger than the maximum horizontal shearing force which can be borne by the supports, and the supports can be excessively deformed or even destroyed, so that the safety of the building is endangered.
Disclosure of Invention
The invention aims to solve the technical problem of providing a variable-friction sliding shock insulation support which can provide different horizontal rigidity and damping force under different stress states and can meet the shock insulation and reduction requirements of building structures in different levels of earthquakes.
The technical scheme adopted by the invention for solving the problems is as follows:
the utility model provides a become friction shock insulation support that slides locates between building structure and the basis that needs the shock insulation, its characterized in that includes:
the lower connecting plate is fixed on the foundation;
a sliding plate having a horizontal upper plane and fixed to the lower connecting plate;
the annular baffle ring is surrounded and fixed on the peripheral edge of the upper plane of the sliding plate;
the bottom of the flexible support is fixed with a sliding block and is positioned in the central part of the upper plane of the sliding plate, and the top of the flexible support is fixed with an upper connecting plate of a support;
the top surface of the upper connecting plate is fixed at the bottom of the building structure, and the bottom surface of the upper connecting plate is fixedly connected with the top surface of the upper connecting plate of the support of the flexible support;
the friction coefficient between the sliding block and the central part of the upper plane of the sliding plate is higher than that between the sliding block and the rest parts of the upper plane.
Further, the sliding block is a polytetrafluoroethylene sliding block or a sliding block made of other materials.
Furthermore, the annular baffle ring and the upper plane of the sliding plate are fixed through bolts.
Furthermore, the upper plane of the sliding plate is circular or oval, and the central part of the sliding plate is also circular or oval.
Further, the sliding plate is composed of a central circular plate or elliptical plate and a peripheral circular ring or elliptical ring plate, and the two plates are made of different materials.
Furthermore, the bottom surface of the upper connecting plate is connected with the top surface of the upper connecting plate of the support of the flexible support through bolts.
Furthermore, the flexible support is a common laminated rubber support, a lead core laminated rubber support, a high-damping laminated rubber support or an elastic rubber body.
Furthermore, a tensile bar is fixed inside the flexible support.
The invention has the beneficial effects that:
the variable-friction sliding shock-insulation support can provide different horizontal rigidity and damping force under different stress states, can meet the shock absorption and isolation requirements of a building structure when encountering earthquakes of different grades, and can exert the shock insulation effect of a common shock-insulation support during medium and small earthquakes; during the macroseism, the support can slide to realize shock insulation and shock absorption effects, and the friction of sliding simultaneously can dissipate seismic energy, avoids the excessive deformation of support or even destroys.
Drawings
FIG. 1 is a schematic structural diagram of a variable friction sliding seismic isolation bearing according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of the embodiment of FIG. 1 in a modified form;
FIG. 3 is a schematic structural diagram of the embodiment of FIG. 1 when slippage occurs;
fig. 4 is a schematic plan view of the sliding plate of the embodiment of fig. 1.
In the figure:
1-upper connecting plate, 2-upper connecting plate of support, 3 flexible support, 4-slide block, 5-bolt, 6-annular retaining ring, 7-sliding plate and 8-lower connecting plate.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in FIG. 1, the embodiment of the variable friction sliding seismic isolation bearing of the invention is arranged between a building structure needing seismic isolation and a foundation, and comprises the following components: a lower connecting plate 8 fixed on the foundation; a sliding plate 7 having a horizontal upper plane and fixed to the lower connecting plate 8; an annular baffle ring 6 which is enclosed and fixed on the peripheral edge of the upper plane of the sliding plate 7; a flexible support 3, the bottom of which is fixed with a slide block 4 and is positioned in the central part of the upper plane of the slide plate 7, and the top of which is fixed with a support upper connecting plate 2; the top surface of the upper connecting plate 1 is fixed at the bottom of the building structure, and the bottom surface of the upper connecting plate is fixedly connected with the top surface of the upper connecting plate 2 of the support of the flexible support 3; the friction coefficient between the sliding block 4 and the central part of the upper plane of the sliding plate 7 is higher than that between the sliding block and the rest parts of the upper plane.
On the basis of the above, the present invention may have various preferred improvements as follows: the sliding block 4 is a polytetrafluoroethylene sliding block.
The annular baffle ring 6 and the upper plane of the sliding plate 7 are fixed through bolts 5.
The upper plane of the sliding plate 7 is circular or oval, and the central part is also circular or oval.
The sliding plate 7 is composed of a circular plate or an elliptical plate at the central part and a circular ring or an elliptical ring plate at the other part, and the materials of the two are different.
The bottom surface of the upper connecting plate 1 is connected with the top surface of the upper connecting plate 2 of the support of the flexible support 3 through bolts.
The flexible support 3 is a common laminated rubber support, a lead core laminated rubber support, a high-damping laminated rubber support or an elastic rubber body.
A tensile bar is fixed inside the flexible support 3.
As shown in fig. 1, 2, 3 and 4, the variable friction sliding seismic isolation bearing of the invention can provide different horizontal rigidities according to different horizontal external forces. The sliding block 4 is placed on the central part of the sliding plate 7, the flexible support 3 is in close contact with the upper surface of the inner circular plate block or the upper surface of the outer circular plate block on the sliding plate 7 through the dead weight of the sliding block 4 and the upper structure above the sliding block, and the flexible support can freely slide according to the stress magnitude and direction.
The type of the flexible support 3 can be selected from a common laminated rubber support, a lead core laminated rubber support, a high-damping laminated rubber support and an elastic rubber body, and the flexible support 3 has pressure resistance. The circular plate at the center of the sliding plate 7 and the circular plate of the sliding plate 7 can be made of materials of different materials respectively, the circular plate at the center of the sliding plate 7 can be replaced by an elliptical plate, and the circular plate of the sliding plate 7 can be replaced by an elliptical plate; the friction coefficient between the sliding block 4 and the circular plate and between the sliding block 4 and the circular plate can be controlled through the material, so that the flexible support 3 is guaranteed to realize variable friction sliding. The slider 4 may be made of teflon. The circular plate and the circular ring plate are made of different metal materials, such as steel and the like, so as to ensure that the circular plate and the circular ring plate respectively form different friction coefficients with the friction surface of the sliding block 4; the annular baffle rings 6 are arranged on the peripheral edges of the circular annular plates and can limit the sliding displacement of the flexible supports 3. The flexible support 3 can be placed according to specific practical conditions, when a small earthquake force is applied and the earthquake force is lower than the maximum static friction force between the sliding block 4 and the friction surface of the inner circular plate block, the flexible support deforms, as shown in fig. 2, the upper connecting plate 1 moves horizontally, and at the moment, larger horizontal rigidity is provided; when a large earthquake force is applied and the earthquake force is higher than the maximum static friction force between the sliding block 4 and the circular plate, the sliding block 4 slides, as shown in fig. 3, and then lower horizontal rigidity is provided, the self-vibration period of the upper structure of the support is prolonged by providing lower rigidity, the earthquake response of the upper structure of the support is reduced, and meanwhile, the sliding friction can dissipate earthquake energy and prevent the support from being excessively deformed and even damaged. In order to improve the damping capacity of the variable friction sliding shock insulation support, the upper connecting plate 1 or the lower connecting plate 8 can be a lead rubber support or a high-damping rubber support, and a damper can be additionally arranged on the variable friction sliding shock insulation support.
Claims (8)
1. The utility model provides a become friction shock insulation support that slides locates between building structure and the basis that needs the shock insulation, its characterized in that includes:
a lower connecting plate (8) fixed on the foundation;
a sliding plate (7) having a horizontal upper plane and fixed to said lower connecting plate (8);
the annular baffle ring (6) is surrounded and fixed on the peripheral edge of the upper plane of the sliding plate (7);
a flexible support (3), the bottom of which is fixed with a slide block (4) and is positioned in the central part of the upper plane of the slide plate (7), and the top of which is fixed with a support upper connecting plate (2);
the top surface of the upper connecting plate (1) is fixed at the bottom of the building structure, and the bottom surface of the upper connecting plate is fixedly connected with the top surface of the upper connecting plate (2) of the support of the flexible support (3);
the friction coefficient of the central part of the upper plane of the sliding block (4) and the sliding plate (7) is higher than that of the rest parts of the upper plane.
2. The variable friction sliding seismic isolation bearing according to claim 1, wherein: the sliding block (4) is a polytetrafluoroethylene sliding block.
3. The variable friction sliding seismic isolation bearing according to claim 1, wherein: the annular baffle ring (6) and the upper plane of the sliding plate (7) are fixed through bolts (5).
4. The variable friction sliding seismic isolation bearing according to claim 1, wherein: the upper plane of the sliding plate (7) is circular or oval, and the central part is also circular or oval.
5. The variable friction sliding seismic isolation bearing according to claim 4, wherein: the sliding plate (7) is composed of a circular plate or an elliptical plate at the central part and a circular ring or an elliptical ring plate at the other part, and the materials of the two are different.
6. The variable friction sliding seismic isolation bearing according to claim 1, wherein: the bottom surface of the upper connecting plate (1) is connected with the top surface of the support upper connecting plate (2) of the flexible support (3) through bolts.
7. The variable friction sliding seismic isolation bearing according to claim 1, wherein: the flexible support (3) is a common laminated rubber support, a lead core laminated rubber support, a high-damping laminated rubber support or an elastic rubber body.
8. The variable friction sliding seismic isolation bearing according to claim 1, wherein: a tensile bar is fixed inside the flexible support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556431.9A CN110424547B (en) | 2019-06-25 | 2019-06-25 | Variable friction sliding shock insulation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556431.9A CN110424547B (en) | 2019-06-25 | 2019-06-25 | Variable friction sliding shock insulation support |
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| Publication Number | Publication Date |
|---|---|
| CN110424547A CN110424547A (en) | 2019-11-08 |
| CN110424547B true CN110424547B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910556431.9A Active CN110424547B (en) | 2019-06-25 | 2019-06-25 | Variable friction sliding shock insulation support |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681855B (en) * | 2020-12-15 | 2022-03-08 | 中冶建筑研究总院有限公司 | Sequentially and alternately sliding-out type energy consumption combined plate |
| CN114319625B (en) * | 2021-11-25 | 2023-05-26 | 华中科技大学 | Shock insulation device for resisting rare earthquakes and building shock insulation method |
| CN114809346A (en) * | 2022-04-24 | 2022-07-29 | 同济大学 | Quality vibration damping and energy dissipation system based on roof garden |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11336838A (en) * | 1998-05-25 | 1999-12-07 | Toyo Tire & Rubber Co Ltd | Sliding support device |
| CN101775842A (en) * | 2009-10-23 | 2010-07-14 | 上海路博橡胶减振器技术有限公司 | Three-dimensional shock absorbing support |
| CN203808244U (en) * | 2014-05-08 | 2014-09-03 | 武汉大学 | Laminated type metal rubber shock-isolation bearing |
| CN205116460U (en) * | 2015-10-21 | 2016-03-30 | 浙江秦山橡胶工程股份有限公司 | Shock insulation slide support |
| CN105887667A (en) * | 2016-05-18 | 2016-08-24 | 同济大学 | Variable-friction seismic isolating support |
| CN106320557A (en) * | 2016-10-26 | 2017-01-11 | 南京工业大学 | Seismic isolation bearing with multistage self-reset capacity |
-
2019
- 2019-06-25 CN CN201910556431.9A patent/CN110424547B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11336838A (en) * | 1998-05-25 | 1999-12-07 | Toyo Tire & Rubber Co Ltd | Sliding support device |
| CN101775842A (en) * | 2009-10-23 | 2010-07-14 | 上海路博橡胶减振器技术有限公司 | Three-dimensional shock absorbing support |
| CN203808244U (en) * | 2014-05-08 | 2014-09-03 | 武汉大学 | Laminated type metal rubber shock-isolation bearing |
| CN205116460U (en) * | 2015-10-21 | 2016-03-30 | 浙江秦山橡胶工程股份有限公司 | Shock insulation slide support |
| CN105887667A (en) * | 2016-05-18 | 2016-08-24 | 同济大学 | Variable-friction seismic isolating support |
| CN106320557A (en) * | 2016-10-26 | 2017-01-11 | 南京工业大学 | Seismic isolation bearing with multistage self-reset capacity |
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| CN110424547A (en) | 2019-11-08 |
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Address after: 200444 No. 99, upper road, Shanghai, Baoshan District Patentee after: Shanghai University Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: 200444 No. 99, upper road, Shanghai, Baoshan District Patentee before: Shanghai University Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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