CN110670934B - Energy consumption supporting device capable of avoiding micro-vibration fatigue damage - Google Patents
Energy consumption supporting device capable of avoiding micro-vibration fatigue damage Download PDFInfo
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- CN110670934B CN110670934B CN201910870651.9A CN201910870651A CN110670934B CN 110670934 B CN110670934 B CN 110670934B CN 201910870651 A CN201910870651 A CN 201910870651A CN 110670934 B CN110670934 B CN 110670934B
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- unit
- notch
- fatigue damage
- device capable
- atress
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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
- 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
Abstract
The invention relates to an energy consumption supporting device capable of avoiding micro-vibration fatigue damage, which comprises a stress unit and a connecting unit connected with the stress unit, wherein supporting bodies are arranged at two ends of the stress unit along the axial direction, a notch is arranged in the connecting unit, the size of the notch is larger than that of the supporting bodies, and the supporting bodies are positioned in the notches and can freely slide in the notches for a set distance under the action of external force. The invention prevents the supporting device from working under the micro-vibration working condition, thereby ensuring the low-cycle fatigue energy consumption capability of the stress unit.
Description
Technical Field
The invention relates to the technical field of structural earthquake resistance and disaster prevention, in particular to an energy consumption supporting device capable of avoiding micro-vibration fatigue damage.
Background
The traditional buckling-restrained brace is also called buckling-restrained brace or unbonded brace, the main stress mechanism is similar, the core axial force unit of the brace provides lateral continuous support through the external constraint unit, so that buckling instability damage can not occur when the core unit is pressed, the axial tension and the axial compression of the brace can reach the core section yield force, the tension-compression bearing capacity of the component is approximate, and the strength of the material is fully utilized. At present, the main structural forms of the buckling restrained brace are two types: the steel pipe concrete type buckling restrained brace and the pure steel type buckling restrained brace both structurally place the core stress unit in the restraining unit, and the difference is only in the type difference of the restraining unit.
The buckling-restrained brace is mainly used for improving the earthquake resistance of a building, plastic deformation can occur to consume earthquake input energy after the buckling-restrained brace core unit is subjected to tension-compression yielding in an earthquake, the plastic energy consumption capability of materials is fully utilized, the damage energy consumption of a structural main body is reduced, the damage degree of the building in the earthquake is controlled, and the structural earthquake resistance is greatly facilitated.
The rigid node connection mode of the existing buckling-restrained brace determines that the buckling-restrained brace not only participates in work in rare earthquakes with low occurrence probability, but also participates in work under wind loads with high occurrence probability or frequent earthquakes. The energy consumption capability of the buckling restrained brace is mainly determined by the low-cycle fatigue performance of core steel. Although the supporting core unit can be ensured to be in an elastic state in wind load or frequent earthquakes, the fatigue damage is generated in the material under the action of repeated reciprocating loads, so that the plastic energy consumption of the material is greatly influenced, and in extreme cases, the buckling-restrained brace can be failed and withdrawn from working after being subjected to fatigue fracture before resisting the rare earthquakes, so that the shock resistance of the structure is influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem that the core unit is easy to fatigue fracture in the prior art, so that the shock resistance is influenced, and therefore, the energy consumption supporting device which can avoid the micro-vibration fatigue damage and ensure the low-cycle fatigue energy consumption capability of the core unit is provided.
In order to solve the technical problems, the energy dissipation supporting device capable of avoiding the micro-vibration fatigue damage comprises a stress unit and a connecting unit connected with the stress unit, wherein supporting bodies are arranged at two ends of the stress unit along the axial direction, a notch is formed in the connecting unit, the size of the notch is larger than that of each supporting body, and the supporting bodies are located in the notches and can freely slide in the notches for a set distance under the action of external force.
In one embodiment of the present invention, the connection unit includes a connection body and two extending bodies extending from the connection body to the same side, and the notch is formed by a space surrounded by the connection body and the extending bodies.
In one embodiment of the invention, a connecting cover plate is arranged in the notch at a position close to the extending body.
In one embodiment of the invention, the length of the connection cover plate is greater than the distance between the extension bodies.
In one embodiment of the present invention, the force-bearing unit further includes a force-bearing body, and the force-bearing body is connected to the supporting body.
In one embodiment of the invention, the intermediate position of the force-bearing body is placed inside the steel pipe concrete restraining unit.
In one embodiment of the invention, the device further comprises a stiffening connecting unit, and the stiffening connecting unit is fixed on the connecting unit.
In one embodiment of the invention, the stiffening connecting elements are welded perpendicularly to the upper and lower opposite sides of the connecting elements.
In one embodiment of the invention, the stiffening connection units are wedge-shaped.
In one embodiment of the invention, the support body is rectangular, circular or fan-shaped.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the energy dissipation supporting device capable of avoiding the micro-vibration fatigue damage comprises a stress unit and a connecting unit connected with the stress unit, the two ends of the stress unit along the axial direction are provided with supporting bodies, the connecting unit is internally provided with a notch, the size of the notch is larger than that of the support body, the support body is positioned in the notch, and the support body can freely slide in the notch for a set distance under the action of external force, thereby being beneficial to avoiding the supporting device from participating in the work under the micro-vibration working condition, ensuring the low-cycle fatigue energy consumption capability of the stress unit, under rare earthquake working conditions, the axial force is transmitted and supported through the extrusion stress, the stressed unit participates in the work to consume energy, therefore, the technical problem of the existing buckling restrained brace is effectively solved, and the application effect of the buckling restrained brace is improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a top view of an energy dissipating support device capable of avoiding fretting fatigue damage according to the present invention;
FIG. 2 is a front view of the energy dissipating support device of the present invention to avoid fretting fatigue damage;
FIG. 3 is a schematic view of the force receiving unit of the present invention;
FIG. 4 is a schematic view of the connection cover plate to the connection unit;
fig. 5 is a schematic view of a stiffening connection unit.
The specification reference numbers indicate: 11-stress unit, 11A-support body, 11B-stress body, 12-connection unit, 12A-notch, 12B-connection body, 12C-extension body, 13-connection cover plate, 14-steel pipe concrete constraint unit and 15-stiffening connection unit.
Detailed Description
As shown in fig. 1 and 2 and fig. 3 and 4, the present embodiment provides an energy dissipation supporting device capable of avoiding fretting fatigue damage, including a force receiving unit 11 and a connecting unit 12 connected to the force receiving unit 11, wherein two ends of the force receiving unit 11 along an axial direction are provided with supporting bodies 11A, a notch 12A is provided in the connecting unit 12, the size of the notch 12A is larger than that of the supporting body 11A, and the supporting body 11A is located in the notch 12A and can freely slide in the notch 12A for a set distance under an external force.
This embodiment the energy dissipation support device capable of avoiding the fatigue damage due to microvibration includes a stress unit 11 and a connection unit 12 connected to the stress unit 11, and is beneficial to avoiding the support device to participate in the operation under the microvibration condition, the stress unit 11 is provided with a support body 11A at both ends along the axial direction, a notch 12A is provided in the connection unit 12, the size of the notch 12A is larger than the size of the support body 11A, the support body 11A is located in the notch 12A and can freely slide in the notch 12A for a set distance under the external force, thereby being beneficial to avoiding the support device to participate in the operation under the microvibration condition, so as to ensure the low cycle fatigue energy dissipation capability of the stress unit 11, support the axial force through the extrusion stress transmission under the rare earthquake condition, the stress unit 11 participates in the operation to consume energy, therefore, the technical problem of the existing buckling restrained brace is effectively solved, and the application effect of the buckling restrained brace is improved.
As shown in fig. 3, the force-bearing unit 11 further includes a force-bearing body 11B, and the force-bearing body 11B is connected to the supporting body 11A, wherein the force-bearing body 11B has two large ends and a small middle, so as to facilitate smooth connection with the supporting body 11A. The middle position of the stress body 11B is placed in the steel pipe concrete constraint unit 14, thereby being beneficial to ensuring the strength of the whole device. In order to increase the contact area, the support 11A may have various shapes such as a rectangular shape and a circular shape, and preferably has a fan shape.
As shown in fig. 4, the connection unit 12 includes a connection body 12B and two extensions 12C extending from the connection body 12B to the same side, and the notch 12A is formed by a space surrounded by the connection body 12B and the extensions 12C. In order to make the supporting body 11A move smoothly along the notch 12A, the shape of the notch 12A may be various, such as rectangular, circular, or fan-shaped, and preferably, the end of the notch 12A away from the opening is also fan-shaped, so that when the force receiving unit 11 is relatively slidable under a micro-vibration condition, a force can be transmitted at the notch 12A, so that the force receiving unit 11 does not participate in the operation. A connecting cover plate 13 is arranged in the notch 12A at a position close to the extension body 12C, and the connecting cover plate 13 can provide enough constraint force when the supporting device is pulled so as to transfer the contact pressure between the force receiving unit 11 and the connecting unit 12. Specifically, the connection cover 13 is welded and fixed to the upper and lower surfaces of the opening of the connection unit 12. In addition, the length of the connection cover 13 is greater than the distance between the extension bodies 12C, so that the contact pressure between the force receiving unit 11 and the connection unit 12 can be ensured.
As shown in fig. 5, the energy dissipation brace capable of avoiding the fretting fatigue damage further includes a stiffening connection unit 15, and the stiffening connection unit 15 is fixed on the connection unit 12, so as to ensure that the end of the force receiving unit 11 does not deflect when moving horizontally along the notch 12A. The stiffening connection elements 15 are wedge-shaped, facilitating the fixing of the stiffening connection elements 15 to the connection elements 12. The stiffening connection units 15 are welded perpendicularly to the upper and lower opposite sides of the connection unit 12, so as to provide lateral restraint against deformation of the notches 12A. Specifically, the stiffening connecting units 15 are vertically welded to both side surfaces of the connecting unit 12 and both side surfaces of the connecting cover plate 13, and are disconnected from the force-receiving unit 11.
The manufacturing method of the energy consumption supporting device capable of avoiding the micro-vibration fatigue damage in the embodiment is as follows: firstly, selecting a steel plate, and respectively cutting the steel plate into a flat plate stress unit 11 with two end parts being fan-shaped enlarged sections and a connecting unit 12 provided with a fan-shaped notch 12A; secondly, the end support 11 of the force-receiving unit 11 is placed in the notch 12A of the connection unit 12; then, the connection cover plate 13 is welded on the upper and lower surfaces of the opening position of the connection unit 12; then, the stiffening connecting units 15 are welded on the side surfaces of the connecting units 12 and the connecting cover plates 13; and finally, placing the components of the unit into a steel pipe and pouring concrete until the manufacturing is finished.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. The utility model provides a can avoid power consumption strutting arrangement of microvibration fatigue damage, including atress unit and with the linkage unit that atress unit is connected which characterized in that: the both ends of atress unit edge axial direction are equipped with the supporter, be equipped with the notch in the linkage unit, the size of notch is greater than the size of supporter, the supporter is located in the notch and under the exogenic action the supporter can free slip distance of setting for in the notch, the linkage unit including connect the body and by connect the body to two extension bodies that the homonymy extends, the notch by connect the body and the space that the extension body encloses constitutes, be close to in the notch the position department of extension body is equipped with the connection cover board, the atress unit still includes the atress body, the atress body with the supporter links to each other.
2. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 1, wherein: the length of the connecting cover plate is larger than the distance between the extending bodies.
3. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 1, wherein: the middle position of the stress body is placed in the concrete filled steel tube restraining unit.
4. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 1, wherein: still include the connection element of putting more energy into, the connection element of putting more energy into is fixed on the connection element.
5. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 4, wherein: the stiffening connecting unit is vertically welded on the upper and lower opposite side surfaces of the connecting unit.
6. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 4, wherein: the stiffening connecting unit is wedge-shaped.
7. The dissipative brace device capable of avoiding fretting fatigue damage according to claim 1, wherein: the supporting body is rectangular, circular or fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870651.9A CN110670934B (en) | 2019-09-16 | 2019-09-16 | Energy consumption supporting device capable of avoiding micro-vibration fatigue damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870651.9A CN110670934B (en) | 2019-09-16 | 2019-09-16 | Energy consumption supporting device capable of avoiding micro-vibration fatigue damage |
Publications (2)
| Publication Number | Publication Date |
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| CN110670934A CN110670934A (en) | 2020-01-10 |
| CN110670934B true CN110670934B (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910870651.9A Active CN110670934B (en) | 2019-09-16 | 2019-09-16 | Energy consumption supporting device capable of avoiding micro-vibration fatigue damage |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201671199U (en) * | 2010-05-04 | 2010-12-15 | 天津市建筑设计院 | Semi-rigid joint dual-steel tube power-consumption support resisting bending |
| CN202440963U (en) * | 2012-02-27 | 2012-09-19 | 株洲时代新材料科技股份有限公司 | Assembly type energy consumption supporting device for buckling restrained bending resisting structure |
| CN104005490B (en) * | 2014-04-12 | 2017-02-15 | 北京工业大学 | Anti-buckling limit support member for reinforcing post-yield stiffness |
| CN205604507U (en) * | 2016-01-28 | 2016-09-28 | 南京大德减震科技有限公司 | Buckling restrained brace |
| CN205976047U (en) * | 2016-07-13 | 2017-02-22 | 华东建筑设计研究院有限公司 | Clean steel buckling restrained brace component |
| CN107514068A (en) * | 2017-08-29 | 2017-12-26 | 同济大学 | Double ranks surrender energy dissipating bracing members |
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