CN113685072A - Self-resetting shock-absorbing support and energy dissipation method - Google Patents
Self-resetting shock-absorbing support and energy dissipation method Download PDFInfo
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- CN113685072A CN113685072A CN202110912699.9A CN202110912699A CN113685072A CN 113685072 A CN113685072 A CN 113685072A CN 202110912699 A CN202110912699 A CN 202110912699A CN 113685072 A CN113685072 A CN 113685072A
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- end plate
- guide cylinder
- spring
- fixed end
- sleeve
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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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a self-resetting shock-absorbing support and energy dissipation method.A first fixed end plate, a first sliding end plate, an anchoring plate, a second sliding end plate, a second fixed end plate and a sleeve loading part are sequentially arranged in a sleeve in the support; a first spring is arranged between the first sliding end plate and the first fixed end plate; the second sliding end plate and the second fixed end plate are both provided with a second spring; the prestressed screw is anchored between the first fixed end plate and the second fixed end plate; the left end of the guide cylinder is provided with a guide cylinder loading end, and the right end of the guide cylinder is inserted from the left side of the sleeve; the guide cylinder comprises a guide cylinder protruding section used for pushing the first sliding end plate or the second sliding end plate. According to the invention, the pre-tightening force is applied to the first spring and the second spring through the pre-stressed screw rod, so that better axial self-resetting capability can be obtained, and the residual deformation of the structure is reduced. The invention adopts the metal spiral-high damping rubber material as the self-resetting and energy-consuming material, can provide stable axial rigidity and energy-consuming capability, and has stable and excellent damping performance.
Description
Technical Field
The invention belongs to the technical field of energy dissipation and shock absorption of building structures, and particularly relates to a self-resetting shock absorption support and an energy dissipation method.
Background
Due to economic development and social requirements, China builds a large number of building structures and bridge structures. However, China is one of the most serious countries in the world, and the earthquake in China is characterized by high frequency, large magnitude and wide distribution. The damping technology is an effective new engineering anti-seismic technology, and the adoption of the energy-consuming damping support is a common damping design scheme, so that the vibration energy can be effectively dissipated, and the seismic response of a main body structure is reduced.
Furthermore, under the action of strong earthquakes, the structural elements often dissipate energy through plastic deformation capacity, which makes the structure undergo significant residual deformation after an earthquake, and even some buildings have to be dismantled due to large residual deformation, so that it becomes particularly important to control the residual deformation of the structure after an earthquake. However, the conventional energy dissipation and shock absorption support generally has insufficient self-resetting capability and has large residual deformation after earthquake, which is unfavorable for the earthquake resistance of the structure. Therefore, it is necessary to develop a shock-absorbing support having stable and excellent self-resetting capability.
Disclosure of Invention
The invention aims to provide a self-resetting shock-absorbing support and an energy dissipation method.
A self-resetting shock-absorbing brace comprising:
the sleeve is internally provided with a first fixed end plate, an anchoring plate, a second fixed end plate and a sleeve loading part from left to right in sequence along the axial direction; a first sliding end plate is arranged on the left side of the anchoring plate, and a second sliding end plate is arranged on the right side of the anchoring plate; a first spring is arranged between the first sliding end plate and the first fixed end plate; the second sliding end plate and the second fixed end plate are both provided with a second spring;
the prestressed screw rod sequentially penetrates through the first sliding end plate, the anchoring plate and the second sliding end plate and is anchored between the first fixed end plate and the second fixed end plate;
the guide cylinder can move along the axial direction of the sleeve, the left end of the guide cylinder is provided with a guide cylinder loading end, and the right end of the guide cylinder is inserted from the left side of the sleeve; the guide cylinder sequentially penetrates through the first fixed end plate, the first spring, the first sliding end plate, the anchoring plate, the second sliding end plate, the second spring and the second fixed end plate; the guide cylinder comprises a guide cylinder protruding section used for pushing the first sliding end plate or the second sliding end plate, and the guide cylinder protruding section is located in the anchoring plate in the initial state.
Preferably, the first spring and the second spring are metal spiral-high damping rubber composite springs.
Preferably, the sleeve loading portion comprises a third fixed end plate and a sleeve loading end; the sleeve loading end is fixed on the right side face of the third fixed end plate; the third fixed end plate is arranged inside the sleeve.
Preferably, the first fixed end plate, the anchoring plate, the second fixed end plate and the third fixed end plate are all anchored on the inner wall of the sleeve.
Preferably, the first sliding end plate and the second sliding end plate are provided with round holes which are matched with each other, and the round holes are matched with the prestressed screw rods.
Preferably, a plurality of mounting holes are reserved in the sleeve loading part and the guide cylinder loading end and used for connecting an external component.
An energy dissipation method of a self-resetting shock-absorbing support is based on the self-resetting shock-absorbing support and comprises the following steps:
s1, reasonably designing the length of the pre-stress screw rod between the first fixed end plate and the second fixed end plate to adjust the pre-stress force of the pre-stress screw rod, so as to apply initial pre-stress to the first spring and the second spring, namely the first spring and the second spring have initial elastic strain energy to enhance the self-resetting capability of the self-resetting shock absorption support;
s2, anchoring the first fixed end plate, the anchoring plate, the second fixed end plate and the sleeve loading part in the sleeve;
s3, when the guide cylinder loading end and the sleeve loading part are respectively connected with the external component, the guide cylinder and the sleeve move relatively along the axial direction under the vibration action of the external component;
when the guide cylinder relatively moves towards the right, the second sliding end plate is pushed by the protruding section of the guide cylinder to move rightwards in the moving process of the guide cylinder, the second sliding end plate compresses the second spring, the damping energy consumption of the second spring is realized, and the elastic strain energy of the second spring is increased; finally, after the damping energy consumption is finished, the guide cylinder returns under the action of the elastic strain energy of the second spring;
when the guide cylinder moves oppositely and relatively, in the moving process of the guide cylinder, the first sliding end plate is pushed by the protruding section of the guide cylinder to move towards the left, the first sliding end plate compresses the first spring, the first spring is damped to consume energy, and the elastic strain energy of the first spring is increased; finally, after the damping energy consumption is finished, the guide cylinder returns under the action of the elastic strain energy of the first spring.
Compared with the prior art, the invention has the advantages that:
(1) the pre-tightening force is applied to the first spring and the second spring through the pre-stress screw rod, so that the self-resetting function is realized, and the residual deformation of the structure is reduced.
(2) The metal spiral-high damping rubber material has good damping performance and high rigidity, can provide stable axial rigidity and energy consumption capability, and has stable and excellent damping performance.
Drawings
FIG. 1 is a generally schematic view of a self-resetting shock-absorbing brace in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of the interior of the sleeve of FIG. 1;
fig. 3 is an exploded view of fig. 2.
The device comprises a sleeve loading part 1, a guide cylinder loading end 2, a sleeve 3, an anchoring bolt 4, a first spring 5a, a second spring 5b, a prestressed screw 6, a first fixed end plate 7a, a second fixed end plate 7b, a first sliding end plate 8a, a second sliding end plate 8b, an anchoring plate 9, a guide cylinder 10, a guide cylinder protruding section 11, a guide hole 12, a circular hole 13, a sleeve loading end 14 and a third fixed end plate 15.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1 to 3, a self-resetting shock-absorbing support can be placed at any position, comprising: a sleeve 3, a guide cylinder 10 and a prestressed screw 6. The support can be widely applied to a vibration control structure or device, effectively dissipates earthquake energy, and can automatically recover without residual deformation after an earthquake.
The left end of the sleeve 3 is a guide cylinder loading end 2, and the right end thereof is a sleeve loading end 14. The sleeve loading end 14 and the guide cylinder loading end 2 are both reserved with a plurality of mounting holes for connecting external components. The sleeve 3 is internally provided with a first fixed end plate 7a, an anchoring plate 9, a second fixed end plate 7b and a sleeve loading end 14 from left to right in sequence along the axial direction. A first sliding end plate 8a is arranged on the left side of the anchoring plate 9, and a second sliding end plate 8b is arranged on the right side; a first spring 5a is arranged between the first sliding end plate 8a and the first fixed end plate 7 a; the second sliding end plate 8b and the second fixed end plate 7b are each provided with a second spring 5 b.
A sleeve loading part 1 including a third fixed end plate 15 and a sleeve loading end 14; the sleeve loading end 14 is fixed on the right side surface of the third fixed end plate 15; a third fixed end plate 15 is arranged inside said sleeve 3. Specifically, the first fixed end plate 7a, the anchoring plate 9, the second fixed end plate 7b and the third fixed end plate 15 are anchored on the inner wall of the casing 3.
Wherein the first and second fixed end plates 7a, 7b are each anchored to the casing 3, thereby providing an outer anchorage for the first and second springs 5a, 5 b; the anchoring plate 9 is anchored on the sleeve 3, so that when the guide cylinder loading end 2 is connected with an external component, the anchoring plate 9 limits the metal spiral-high damping rubber composite spring, and only generates one-side reciprocating compression displacement; the sleeve loading end 14 is anchored to the sleeve 3, and synchronous movement of the sleeve 3 and the anchoring plate 9 can be realized. The anchoring with the casing 3 is performed by using anchor bolts.
The prestress screw 6 applies a prescribed initial prestress to the first spring 5a and the second spring 5b by adjusting the length between the first fixed end plate 7a and the second fixed end plate 7 b. The prestressed screw 6 passes through the first sliding end plate 8a, the anchoring plate 9 and the second sliding end plate 8b in sequence, and is anchored between the first fixed end plate 7a and the second fixed end plate 7 b. Preferably, the first sliding end plate 8a and the second sliding end plate 8b are both provided with circular holes 13 which are matched with each other, and the circular holes 13 are matched with the prestressed screw 6.
The guide cylinder 10 can move along the axial direction of the sleeve 3, and the left end of the guide cylinder 10 is provided with a guide cylinder loading end 2; the right end of the guide cylinder 10 is inserted from the left side of the sleeve 3 and sequentially passes through a first fixed end plate 7a, a first spring 5a, a first sliding end plate 8a, an anchoring plate 9, a second sliding end plate 8b, a second spring 5b and a second fixed end plate 7 b; the guide cylinder 10 comprises a guide cylinder protruding section 11 for driving the first sliding end plate 8a or the second sliding end plate 8 b; in the initial state, the guide cylinder protruding section 11 is located in the anchoring plate 9. Specifically, a guide hole 12 is reserved in each of the first fixed end plate 7a, the first spring 5a, the first sliding end plate 8a, the anchoring plate 9, the second sliding end plate 8b, the second spring 5b and the second fixed end plate 7b, so that the guide cylinder 10 is through. Wherein, a guide cylinder bulge section 11 is reserved at the position of the guide cylinder 10 corresponding to the anchoring plate 9; the outer diameter of the guide cylinder protruding section 11 is larger than the guide holes 12 on the first sliding end plate 8a and the second sliding end plate 8b, so that the guide cylinder 10 moves left and right under the driving of the guide cylinder loading end 2, and the guide cylinder protruding section 11 can drive the first sliding end plate 8a and the second sliding end plate 8b to move. Specifically, in the initial state, the guide cylinder convex section 11 is positioned in the anchoring plate 9; the guide cylinder bulge section 11 moves leftwards to push the first sliding end plate 8a to move; the guide cylinder boss section 11 moves rightwards to push the second sliding end plate 8b to move.
In the present embodiment, the first spring 5a and the second spring 5b are both metal coil-high damping rubber composite springs.
The working principle of the self-resetting shock-absorbing support is as follows:
and S1, adjusting the length of the prestressed screw 6 between the first fixed end plate 7a and the second fixed end plate 7b to adjust the pretightening force of the prestressed screw 6.
And S2, anchoring the first fixed end plate 7a, the anchoring plate 9, the second fixed end plate 7b and the third fixed end plate 15 in the sleeve 3.
And S3, loading the guide cylinder loading ends 2 and the sleeve loading part 1 at the two ends of the self-resetting damping support so as to dissipate energy.
When the guide cylinder loading end 2 and the sleeve loading end 14 are respectively connected with an external component, the guide cylinder 10 and the sleeve 3 relatively move along the axial direction under the vibration action of the external component;
when the guide cylinder 10 relatively moves towards the right, in the moving process of the guide cylinder 10, the second sliding end plate 8b is pushed by the guide cylinder protruding section 11 to move towards the right, the second sliding end plate 8b compresses the second spring 5b, the second spring 5b consumes energy in a damping mode, and the elastic strain energy of the second spring 5b is increased; finally, after the damping energy consumption is finished, the guide cylinder 10 returns under the action of the elastic strain energy of the second spring 5 b;
when the guide cylinder 10 moves oppositely and relatively, in the moving process of the guide cylinder 10, the first sliding end plate 8a is pushed by the guide cylinder protruding section 11 to displace towards the left, the first sliding end plate 8a compresses the first spring 5a, the first spring 5a consumes energy in a damping mode, and the elastic strain energy of the first spring 5a is increased; finally, after the damping energy consumption is finished, the guide cylinder 10 is reset under the action of the elastic strain energy of the first spring 5 a.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A self-resetting shock-absorbing brace, comprising:
the sleeve is internally provided with a first fixed end plate, an anchoring plate, a second fixed end plate and a sleeve loading part from left to right in sequence along the axial direction; a first sliding end plate is arranged on the left side of the anchoring plate, and a second sliding end plate is arranged on the right side of the anchoring plate; a first spring is arranged between the first sliding end plate and the first fixed end plate; the second sliding end plate and the second fixed end plate are both provided with a second spring;
the prestressed screw rod sequentially penetrates through the first sliding end plate, the anchoring plate and the second sliding end plate and is anchored between the first fixed end plate and the second fixed end plate;
the guide cylinder can move along the axial direction of the sleeve, the left end of the guide cylinder is provided with a guide cylinder loading end, and the right end of the guide cylinder is inserted from the left side of the sleeve; the guide cylinder sequentially penetrates through the first fixed end plate, the first spring, the first sliding end plate, the anchoring plate, the second sliding end plate, the second spring and the second fixed end plate; the guide cylinder comprises a guide cylinder protruding section used for pushing the first sliding end plate or the second sliding end plate, and the guide cylinder protruding section is located in the anchoring plate in the initial state.
2. The self-resetting shock-absorbing brace according to claim 1, wherein the first spring and the second spring are metal spiral-high damping rubber composite springs.
3. The self-resetting shock-absorbing brace of claim 1, wherein the bushing loading portion comprises a third fixed end plate and a bushing loading end; the sleeve loading end is fixed on the right side face of the third fixed end plate; the third fixed end plate is arranged inside the sleeve.
4. The self-resetting shock-absorbing brace of claim 3, wherein the first, anchor, second, and third fixed end plates are anchored to the inner wall of the sleeve.
5. The self-resetting shock-absorbing support according to claim 1, wherein the first sliding end plate and the second sliding end plate are provided with mutually-matched round holes, and the round holes are matched with the prestressed screw rods.
6. The self-resetting shock-absorbing support according to claim 1, wherein a plurality of screw holes are reserved on the sleeve loading part and the guide cylinder loading end for connecting with external components.
7. An energy dissipation method for a self-resetting shock-absorbing support, which is based on the self-resetting shock-absorbing support of any one of claims 1 to 6, and comprises the following steps:
s1, designing the length of the pre-stress screw rod between the first fixed end plate and the second fixed end plate to adjust the pre-stress force of the pre-stress screw rod, so as to apply initial pre-stress to the first spring and the second spring;
s2, anchoring the first fixed end plate, the anchoring plate, the second fixed end plate and the sleeve loading part in the sleeve;
s3, when the guide cylinder loading end and the sleeve loading part are respectively connected with the external component, the guide cylinder and the sleeve move relatively along the axial direction under the vibration action of the external component;
when the guide cylinder relatively moves towards the right, the second sliding end plate is pushed by the protruding section of the guide cylinder to move rightwards in the moving process of the guide cylinder, the second sliding end plate compresses the second spring, the damping energy consumption of the second spring is realized, and the elastic strain energy of the second spring is increased; finally, after the damping energy consumption is finished, the guide cylinder returns under the action of the elastic strain energy of the second spring;
when the guide cylinder moves oppositely and relatively, in the moving process of the guide cylinder, the first sliding end plate is pushed by the protruding section of the guide cylinder to move towards the left, the first sliding end plate compresses the first spring, the first spring is damped to consume energy, and the elastic strain energy of the first spring is increased; finally, after the damping energy consumption is finished, the guide cylinder returns under the action of the elastic strain energy of the first spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912699.9A CN113685072A (en) | 2021-08-10 | 2021-08-10 | Self-resetting shock-absorbing support and energy dissipation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110912699.9A CN113685072A (en) | 2021-08-10 | 2021-08-10 | Self-resetting shock-absorbing support and energy dissipation method |
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| CN113685072A true CN113685072A (en) | 2021-11-23 |
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| CN202110912699.9A Pending CN113685072A (en) | 2021-08-10 | 2021-08-10 | Self-resetting shock-absorbing support and energy dissipation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966919A (en) * | 2024-01-26 | 2024-05-03 | 东南大学 | Self-adaptive viscous damping wall |
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| KR101140160B1 (en) * | 2011-04-18 | 2012-05-02 | 주식회사 씨앤엠 | Damper and shock absorbing device for building |
| CN105604203A (en) * | 2015-12-24 | 2016-05-25 | 北京工业大学 | Double-compressed-spring cylinder centripetal friction-variable damper with complex damping feature |
| CN106382315A (en) * | 2016-10-17 | 2017-02-08 | 安徽信泽科技有限公司 | Pull rod guide type spring damper |
| CN112854516A (en) * | 2021-03-05 | 2021-05-28 | 西安建筑科技大学 | Self-resetting steel support with prepressing disc spring and friction damper |
| CN112962808A (en) * | 2021-02-22 | 2021-06-15 | 中南大学 | Novel assembled mixes energy dissipation shock attenuation from restoring to throne and supports |
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2021
- 2021-08-10 CN CN202110912699.9A patent/CN113685072A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101140160B1 (en) * | 2011-04-18 | 2012-05-02 | 주식회사 씨앤엠 | Damper and shock absorbing device for building |
| CN105604203A (en) * | 2015-12-24 | 2016-05-25 | 北京工业大学 | Double-compressed-spring cylinder centripetal friction-variable damper with complex damping feature |
| CN106382315A (en) * | 2016-10-17 | 2017-02-08 | 安徽信泽科技有限公司 | Pull rod guide type spring damper |
| CN112962808A (en) * | 2021-02-22 | 2021-06-15 | 中南大学 | Novel assembled mixes energy dissipation shock attenuation from restoring to throne and supports |
| CN112854516A (en) * | 2021-03-05 | 2021-05-28 | 西安建筑科技大学 | Self-resetting steel support with prepressing disc spring and friction damper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966919A (en) * | 2024-01-26 | 2024-05-03 | 东南大学 | Self-adaptive viscous damping wall |
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Inventor after: Xu Gang Inventor after: Guo Tong Inventor after: Li Aiqun Inventor after: Wang Shiyuan Inventor before: Xu Gang Inventor before: Guo Dan Inventor before: Li Aiqun Inventor before: Wang Shiyuan |
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