CN113123477B - All-steel SMA self-resetting energy dissipation device and manufacturing method - Google Patents
All-steel SMA self-resetting energy dissipation device and manufacturing method Download PDFInfo
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- CN113123477B CN113123477B CN202110253546.8A CN202110253546A CN113123477B CN 113123477 B CN113123477 B CN 113123477B CN 202110253546 A CN202110253546 A CN 202110253546A CN 113123477 B CN113123477 B CN 113123477B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The application provides an all-steel SMA self-resetting energy consumption device and a manufacturing method thereof, wherein the all-steel SMA self-resetting energy consumption device comprises a pair of outer channel steel and a pair of inner tension compression bars which are arranged in a back-to-back mode; two groups of clamping block groups are arranged in the gap of the pair of outer channel steel, each group of clamping block group comprises a first clamping block pair and a second clamping block pair, and the first clamping block pair is arranged on one side close to the end part of the outer channel steel; a pair of pushing blocks are fixed on the inner pulling compression bar, and a pair of middle plates are sleeved between the pair of pushing blocks; the pair of middle plates are positioned between the first clamping block pair and the second clamping block pair; the two ends of the pair of outer channel steel are respectively connected with the end plates, an SMA stranded wire is connected between the middle plate close to the first clamping block pair and the end plate close to the middle plate, and an SMA stranded wire is connected between the two middle plates close to the two second clamping block pairs. The beneficial effects of this application are: when the internal tension compression bar receives tensile stress or compressive stress during an earthquake, the stress is transmitted to each section of SMA stranded wire connected in the gap, and the SMA stranded wire consumes the received stress energy under the action of self-resetting restoring force, so that the effects of energy consumption and shock absorption are achieved.
Description
Technical Field
The present disclosure relates to the field of building engineering, and in particular to an all-steel SMA self-resetting energy dissipation device and a manufacturing method thereof.
Background
Due to inaccuracy of earthquake predictability, sudden occurrence and severe damage, various measures are required to perform shock absorption treatment on a newly built building and reinforcement treatment on an existing building. When the shear wall is subjected to earthquake, the boundary of the shear wall of the building can be subjected to larger axial force, so that irreversible relative displacement is generated between the column and the wall, and the shear wall is harmful to the building.
The prevention of earthquake disasters in constructional engineering mainly has three approaches: shock resistance, shock insulation and shock absorption. The vibration reduction is to arrange energy dissipaters at proper positions in the building to enable the energy dissipaters to absorb the earthquake energy, increase the damping ratio of the structure, reduce the earthquake action of the structure under the condition of unchanged total earthquake energy, and adopt vibration isolation and vibration reduction methods to conduct vibration reduction design of the building structure in China and the like. In recent years, damping technology is also applied to important projects in China, but most of energy dissipaters are imported products abroad, the energy dissipaters are mainly divided into two types of speed-related type viscoelastic energy dissipaters and displacement-related type displacement-type buckling-restrained energy dissipation supports, the manufacturing cost of the foreign products is high, and a large number of applications in China are greatly limited and only applied to important projects.
Disclosure of Invention
The purpose of the application is to provide an SMA self-resetting energy consumption device and a manufacturing method thereof aiming at the problems.
In a first aspect, the present application provides an SMA self-resetting energy consumer comprising a pair of outer channels, a pair of end plates, and a pair of inner tension struts; the outer channel steel comprises a main board and lug plates arranged on two sides of the main board, the lug plates are perpendicular to the main board, the main board and the pair of lug plates are enclosed on one side far away from the main board to form an opening, and the pair of outer channel steel are arranged in opposite directions so that the opening faces in opposite directions; a gap is arranged between the main boards of the pair of outer channel steel, two groups of oppositely arranged clamping block groups are arranged in the gap, each clamping block group comprises a first clamping block pair and a second clamping block pair, each clamping block pair comprises two clamping blocks oppositely arranged on the corresponding main board, and the first clamping block pair is arranged on one side close to the end part of the outer channel steel; a pair of pushing blocks are fixed on the inner pulling compression bar, a pair of middle plates are arranged between the pair of pushing blocks, and the middle plates are slidably sleeved on the inner pulling compression bar; the inner tension compression bar is placed in the gap, so that a pair of middle plates are positioned between the first clamping block pair and the second clamping block pair, and one end of the inner tension compression bar extends to the outer side of the gap; the end plates are respectively connected between the end parts of the two ends of the pair of outer channel steel, an SMA stranded wire is connected between the middle plate close to the first clamping block pair in the gap and the end plate close to the first clamping block pair, and an SMA stranded wire is connected between the two middle plates close to the pair of second clamping block pairs on the pair of inner tension compression rods;
and the top and the bottom of the corresponding pair of outer channel steel are respectively provided with an outer wrapping steel plate, the surfaces of the outer wrapping steel plates are attached to the surfaces of the lug plates on the same side of the pair of outer channel steel, and the gaps are surrounded by the outer wrapping steel plates and the pair of end plates to form a cavity.
According to the technical scheme provided by the embodiment of the application, the distance between the first fixture block pair and the second fixture block pair is set to be a second interval, the distance between the second fixture block pairs of the two groups of fixture block groups is set to be a third interval, and the third interval value is larger than the second interval value.
In a second aspect, the present application provides a method for manufacturing an all-steel SMA self-resetting energy consumer, comprising the steps of:
the outer channel steel pair is arranged in a back-to-back mode, so that the opening directions of the outer channel steel pair are opposite, and a gap is formed between the outer channel steel pair;
bolting an outer wrapping steel plate at the bottom of a pair of outer channel steel;
two groups of clamping block groups are arranged in the gap, each clamping block group comprises a first clamping block pair and a second clamping block pair, and each clamping block pair comprises two clamping blocks which are oppositely arranged on the corresponding main board;
a pair of slidable middle plates are sleeved on the inner tension-compression bar, a pair of pushing blocks are fixed on the outer sides of the pair of middle plates, and the pair of middle plates are positioned between the pair of pushing blocks to form a tension-compression bar assembly;
placing two pulling and pressing rod assemblies in the gap, wherein the two pulling and pressing rod assemblies are respectively arranged corresponding to the two clamping block groups, so that a pair of middle plates on each pulling and pressing rod assembly are positioned between a first clamping block pair and a second clamping block pair of the corresponding clamping block group;
a pair of end plates are respectively arranged between the end parts of the two ends of the pair of outer channel steel, so that one end of the inner tension compression rod passes through the end plates and then extends to the outer side of the gap;
an SMA stranded wire applying pre-tightening force is connected between the middle plate close to the first clamping block pair and the end plate close to the first clamping block pair, and an SMA stranded wire applying pre-tightening force is connected between the two middle plates close to the second clamping block pair on the pair of tension-compression rod assemblies respectively;
bolting an outer wrapping steel plate on top of a pair of outer channel steel;
one ends of a pair of inner tension compression rods extending out of the end plates are respectively fixed on the supporting structure.
The invention has the beneficial effects that: the application provides an all-steel SMA self-resetting energy dissipater and a manufacturing method thereof, wherein a pair of middle plates are limited in a gap through a first clamping block pair and a second clamping block pair, so that the internal tension compression bar cannot displace greatly when being subjected to tensile stress and compressive stress, and the stability of the energy dissipater and a supporting structure connected with the energy dissipater is ensured; meanwhile, the inner pulling compression bar is further limited in the gap by arranging a plurality of sections of SMA stranded wires in the gap, and meanwhile, the stress born on the inner pulling compression bar is rapidly consumed under the action of self-resetting restoring force of the SMA stranded wires, so that the purpose of energy consumption is achieved, and the stability and the shock resistance of a supporting structure connected with the energy consumption device are improved.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of the present application;
FIG. 2 is a schematic view of a first embodiment of the present application with the top wrapping sheet removed;
FIG. 3 is a flow chart of a second embodiment of the present application;
the text labels in the figures are expressed as: 1. a pressing rod is pulled inwards; 2. an outer channel steel; 3. wrapping a steel plate; 4. a clamping block; 5. a pushing block; 6. SMA stranded wire; 7. an end plate; 8. and an intermediate plate.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present application with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present application in any way.
Fig. 1 and 2 are schematic views of a first embodiment of the present application, including a pair of outer channels 2, a pair of end plates 7, and a pair of inner tension rods 1; the outer channel steel 2 comprises a main board and lug plates arranged on two sides of the main board, the lug plates are perpendicular to the main board, an opening is formed on one side, far away from the main board, of the main board and a pair of lug plates in a surrounding mode, the pair of outer channel steel 2 are arranged in a back-to-back mode so that the directions of the openings are opposite, and a gap is formed between the main boards of the pair of outer channel steel 2.
Two groups of clamping block groups which are oppositely arranged are arranged in the gap, each group of clamping block group comprises a first clamping block pair and a second clamping block pair, each clamping block pair comprises two clamping blocks 4 which are oppositely arranged on the corresponding main board, and the first clamping block pair is arranged on one side close to the end part of the outer channel steel 2.
A pair of push blocks 5 are fixed on the inner pull compression rod 1, a pair of middle plates 8 are arranged between the pair of push blocks 5, and the middle plates 8 are slidably sleeved on the inner pull compression rod 1. The inner tension rod 1 is placed in the gap so that a pair of intermediate plates 8 are located between the first clamping block pair and the second clamping block pair, and one end of the inner tension rod 1 extends to the outer side of the gap. The end plates 7 are respectively connected between the end parts of the two ends of the pair of outer channel steel 2, the SMA stranded wires 6 are connected between the middle plates 8, which are close to the first clamping block pair, in the gap and the end plates 7, which are close to the first clamping block pair, and the SMA stranded wires 6 are connected between the two middle plates 8, which are respectively close to the pair of second clamping block pairs, on the pair of inner tension compression rods 1. In this embodiment, SMA is an english abbreviation of shape memory alloy, so SMA strands are strands made of shape memory alloy;
and the top and the bottom of the corresponding pair of outer channel steel are respectively provided with an outer wrapping steel plate, the surfaces of the outer wrapping steel plates are attached to the surfaces of the lug plates on the same side of the pair of outer channel steel, and the gaps are surrounded by the outer wrapping steel plates and the pair of end plates to form a cavity.
In this embodiment, taking the process of force movement of the inner pull rod 1 on the left side in fig. 2 as an example: when the inner tension rod 1 receives tensile stress leftwards, on the one hand, the SMA stranded wire 6 connected between the two inner tension rods 1 can restore to the right pulling restoring force to the left inner tension rod 1 time, and meanwhile, the middle plate 8 can be clamped by the left first clamping block pair, so that the inner tension rod 1 is limited to move leftwards further, the stability of the structure is ensured, and meanwhile, the SMA stranded wire 6 between the two inner tension rods 1 and the SMA stranded wire 6 at the leftmost end in the figure restore the inner tension rod 1 under the action of the self-restoring force, so that the received stress energy is consumed, and the purposes of stabilizing the structure, resisting vibration and improving the stability of the connecting structure are achieved. When the left side in drawing depression bar 1 receives pressure in the figure, on the one hand in the figure draw back the depression bar 1 time left to drawing back the restoring force to drawing depression bar 1 in the left side under its effect of restoring force certainly, the second fixture block pair can block intermediate lamella 8 simultaneously to restrict drawing depression bar 1 in and further to by removing, thereby guarantee the stability of structure, thereby the SMA stranded wire 6 between two drawing depression bars 1 and the SMA stranded wire 6 of the left side end in the figure in the drawing restore to the throne drawing depression bar 1 in its effect of restoring force certainly thereby consume the stress energy that receives, reach stable structure, antidetonation, improve the purpose of connection structure stability.
In a preferred embodiment, the top and bottom of the outer channel steel 2 are respectively provided with an outer wrapping steel plate 3, the surfaces of the outer wrapping steel plates 3 are attached to the surfaces of the lug plates on the same side of the outer channel steel 2, and the outer wrapping steel plates 3 and the end plates 7 enclose the gap into a cavity. In the preferred embodiment, the top and bottom outer cladding steel plates 3 and the pair of outer cladding steel channels 2 form the outer cladding structure of the energy dissipater, so that the inner tension strut 1 in the cavity acts.
In this embodiment, a pair of internal tension rods are respectively fixed on the supporting structure, so as to consume vibration and stress received by the supporting structure, thereby improving shock resistance and service life of the supporting structure.
In a preferred embodiment, the distance between the first pair of clamping blocks and the second pair of clamping blocks is set to be a second interval, the distance between the second pair of clamping blocks of the two groups of clamping blocks is set to be a third interval, and the third interval is greater than the second interval.
Fig. 3 is a second embodiment of the present application, which is a method for manufacturing the energy dissipation device of the first embodiment, including the following steps:
s1, arranging the pair of outer channel steel in a back-to-back mode so that the directions of openings of the pair of outer channel steel are opposite, and forming a gap between the pair of outer channel steel.
S2, bolting an outer wrapping steel plate at the bottom of the pair of outer channel steel.
In this embodiment, the outer wrapping steel plate surrounds the top and the bottom in the clearance, and the outer wrapping steel plate is bolted with the otic placode of outer channel-section steel respectively to form the outer wrapping structure of power consumption ware.
S3, two groups of clamping block groups are arranged in the gap, each group of clamping block group comprises a first clamping block pair and a second clamping block pair, and each clamping block pair comprises two clamping blocks which are oppositely arranged on the corresponding main board.
In this embodiment, each group of clamping blocks corresponds to each pulling and pressing rod assembly, and each group of clamping blocks is used for limiting the middle plate in the pulling and pressing rod assembly.
S4, sleeving a pair of slidable middle plates on the inner pulling compression bar, and fixing a pair of pushing blocks on the outer sides of the pair of middle plates, so that the pair of middle plates are positioned between the pair of pushing blocks to form the pulling compression bar assembly.
In this embodiment, a pair of push blocks are welded to the inner pull rod respectively, and the inner distance between the pair of push blocks is consistent with the inner distance between the pair of first clamping blocks and the pair of second clamping blocks.
In this embodiment, a pair of intermediate plates are sleeved on the inner tension rod, and the pair of intermediate plates can slide between the pair of push blocks.
S5, placing two tension-compression bar assemblies in the gap, wherein the two tension-compression bar assemblies are respectively arranged corresponding to the two clamping block groups, and a pair of middle plates on each tension-compression bar assembly are located between a first clamping block pair and a second clamping block pair of the corresponding clamping block group.
In this embodiment, when the pull rod assembly is installed, the pull rod assembly is placed into the gap from above the gap, and the pair of intermediate plates are limited between the first pair of clamping blocks and the second pair of clamping blocks.
And S6, respectively arranging a pair of end plates between the end parts of the two ends of the pair of outer channel steel, so that one end of the inner tension compression rod passes through the end plates and then extends to the outer side of the gap.
In this embodiment, the end plates are arranged such that the gap forms a structure with both sides closed.
And S7, connecting an SMA stranded wire applying pre-tightening force between the middle plate close to the first clamping block pair and the end plate close to the first clamping block pair, and connecting the SMA stranded wire applying pre-tightening force between the two middle plates close to the second clamping block pair on the pair of tension-compression rod assemblies.
S8, bolting an outer wrapping steel plate at the top of the pair of outer channel steel.
After the step, the top wrapping steel plate is installed, so that the gap forms a closed structure on the upper side and the lower side.
And S9, respectively fixing one ends of the pair of inner tension compression rods extending out of the end plates on the supporting structure.
The pair of internal pulling compression bars are fixedly connected with the supporting structure, when an earthquake occurs, vibration pulling pressure received by the supporting structure is transmitted to the pair of internal pulling compression bars, the movement of the internal pulling compression bars is limited through the clamping block, the pushing block, the middle plate and the SMA stranded wires, and the received vibration energy is consumed through the self-resetting restoring force of the SMA stranded wires, so that the vibration damping effect on the supporting structure and the building frame main body connected with the supporting structure is achieved.
Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, due to the limited text expressions, there is virtually no limit to the specific structure, and that, for a person skilled in the art, several modifications, adaptations, or variations may be made without departing from the principles of the present application, and the above-described features may be combined in any suitable manner; such modifications, variations, or combinations, or the direct application of the concepts and aspects disclosed herein without modification, are intended to be within the scope of the present disclosure.
Claims (4)
1. The all-steel SMA self-resetting energy dissipater is characterized by comprising a pair of outer channel steel, a pair of end plates and a pair of inner tension compression rods; the outer channel steel comprises a main board and lug plates arranged on two sides of the main board, the lug plates are perpendicular to the main board, the main board and the pair of lug plates are enclosed on one side far away from the main board to form an opening, and the pair of outer channel steel are arranged in opposite directions so that the opening faces in opposite directions;
a gap is arranged between the main boards of the pair of outer channel steel, two groups of oppositely arranged clamping block groups are arranged in the gap, each clamping block group comprises a first clamping block pair and a second clamping block pair, each clamping block pair comprises two clamping blocks oppositely arranged on the corresponding main board, and the first clamping block pair is arranged on one side close to the end part of the outer channel steel;
a pair of pushing blocks are fixed on the inner pulling compression bar, a pair of middle plates are arranged between the pair of pushing blocks, and the middle plates are slidably sleeved on the inner pulling compression bar; the inner tension compression bar is placed in the gap, so that a pair of middle plates are positioned between the first clamping block pair and the second clamping block pair, and one end of the inner tension compression bar extends to the outer side of the gap;
the end plates are respectively connected between the end parts of the two ends of the pair of outer channel steel, an SMA stranded wire is connected between the middle plate close to the first clamping block pair in the gap and the end plate close to the first clamping block pair, and an SMA stranded wire is connected between the two middle plates close to the pair of second clamping block pairs on the pair of inner tension compression rods;
when the inner tension rods are subjected to tensile stress leftwards, the SMA stranded wires connected between the two inner tension rods can realize rightward return force on the inner tension rods at the left side; when the left inner pulling compression bar is stressed, the leftmost SMA stranded wire realizes leftward pulling restoring force on the inner pulling compression bar under the action of the self-restoring force.
2. And the top and the bottom of the corresponding pair of outer channel steel are respectively provided with an outer wrapping steel plate, the surfaces of the outer wrapping steel plates are attached to the surfaces of the lug plates on the same side of the pair of outer channel steel, and the gaps are surrounded by the outer wrapping steel plates and the pair of end plates to form a cavity.
3. The self-resetting all-steel SMA energy dissipater of claim 2, wherein the distance between the first pair of clamping blocks and the second pair of clamping blocks is set to a second distance, the distance between the second pair of clamping blocks of the two groups of clamping blocks is set to a third distance, and the third distance is greater than the second distance.
4. A method of making the all-steel SMA self-resetting energy consumer of claim 3, comprising the steps of:
the outer channel steel pair is arranged in a back-to-back mode, so that the opening directions of the outer channel steel pair are opposite, and a gap is formed between the outer channel steel pair;
bolting an outer wrapping steel plate at the bottom of a pair of outer channel steel;
two groups of clamping block groups are arranged in the gap, each clamping block group comprises a first clamping block pair and a second clamping block pair, and each clamping block pair comprises two clamping blocks which are oppositely arranged on the corresponding main board;
a pair of slidable middle plates are sleeved on the inner tension-compression bar, a pair of pushing blocks are fixed on the outer sides of the pair of middle plates, and the pair of middle plates are positioned between the pair of pushing blocks to form a tension-compression bar assembly;
placing two pulling and pressing rod assemblies in the gap, wherein the two pulling and pressing rod assemblies are respectively arranged corresponding to the two clamping block groups, so that a pair of middle plates on each pulling and pressing rod assembly are positioned between a first clamping block pair and a second clamping block pair of the corresponding clamping block group;
a pair of end plates are respectively arranged between the end parts of the two ends of the pair of outer channel steel, so that one end of the inner tension compression rod passes through the end plates and then extends to the outer side of the gap;
an SMA stranded wire applying pre-tightening force is connected between the middle plate close to the first clamping block pair and the end plate close to the first clamping block pair, and an SMA stranded wire applying pre-tightening force is connected between the two middle plates close to the second clamping block pair on the pair of tension-compression rod assemblies respectively;
bolting an outer wrapping steel plate on top of a pair of outer channel steel;
one ends of a pair of inner tension compression rods extending out of the end plates are respectively fixed on the supporting structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110253546.8A CN113123477B (en) | 2021-03-09 | 2021-03-09 | All-steel SMA self-resetting energy dissipation device and manufacturing method |
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| CN202110253546.8A CN113123477B (en) | 2021-03-09 | 2021-03-09 | All-steel SMA self-resetting energy dissipation device and manufacturing method |
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| CN113123477B true CN113123477B (en) | 2023-07-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206477464U (en) * | 2017-01-13 | 2017-09-08 | 东南大学 | A kind of SMA Self-resettings energy-consumption damper |
| CN206785059U (en) * | 2017-04-17 | 2017-12-22 | 苏州科技大学 | A kind of SMA Self-resettings ductility bracing members |
| KR101994893B1 (en) * | 2017-08-07 | 2019-07-01 | 인천대학교 산학협력단 | Self restoring type brace damper |
| CN109024960B (en) * | 2018-07-25 | 2020-07-07 | 长安大学 | SMA is from restoring to throne friction damper |
| CN110374222B (en) * | 2019-08-06 | 2024-07-26 | 广州大学 | Self-resetting damping device |
| CN211691721U (en) * | 2019-11-25 | 2020-10-16 | 海南大学 | Self-resetting damper |
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