CN204491881U - Annular curvature associated shape memorial alloy damping device - Google Patents
Annular curvature associated shape memorial alloy damping device Download PDFInfo
- Publication number
- CN204491881U CN204491881U CN201520063114.0U CN201520063114U CN204491881U CN 204491881 U CN204491881 U CN 204491881U CN 201520063114 U CN201520063114 U CN 201520063114U CN 204491881 U CN204491881 U CN 204491881U
- Authority
- CN
- China
- Prior art keywords
- node
- rope
- damping device
- memorial alloy
- sma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model belongs to vibration control of civil engineering structure device technique field, relate to a kind of annular curvature associated shape memorial alloy damping device, described device comprises bracing boom, inside/outside is flexible coupling shell, up/down cover plate, SMA rod/rope, limiting node, adjustment node, stationary nodes.Described vibration absorber is connected with self-supporting tall and slender structure by up/down cover plate and bracing boom, SMA rod/rope is connected with up/down cover plate with stationary nodes by adjustment node, limiting node limits when SMA rod is out of shape and the contact of self-supporting tall and slender structure, adjustment node regulates the original state of SMA rod/rope, utilizes the super-elasticity of SMA to provide power consumption and self-resetting capability.The utility model has simple structure, power consumption and good endurance, possesses the advantages such as self-resetting capability.
Description
Technical field
The utility model belongs to vibration control of civil engineering structure device technique field, relates to a kind of marmem damping vibration absorber for self-supporting tall and slender structure.
Background technology
Self-supporting tall and slender structure is the form of structure of extensive use in social production life, and along with the development of national economy, the structures such as wind power generation stepped, self-supporting electric power pylon, high chimney increase gradually, and more and more toward high soft future development.Because section is often polygon that is circular or sub-circular, elongated form of structure makes them very easily Vortex-excited vibration occur, thus make it be in the duty of past combined stress for a long time, when not reaching its ultimate load, just very likely there is the destruction that fatigue damage causes, cause great economic loss.Therefore, the impact of taking measures to alleviate wind-induced vibration becomes one of key of this kind of structure design.
At present, in self-supporting tall and slender structure, the measure of the tuning vibration damping of many employings suppresses wind vibration response, as tuned mass damper (Tuned Mass Damper, TMD), Tuned Liquid (Tuned Liquid Damper, TLD) etc.And these devices are arranged in structural top usually, for highly higher, that structure is more soft self-supporting tall and slender structure, too high installation site is the installation of device, debugging and later maintenance all bring unnecessary trouble; And the characteristic frequency of the effectiveness in vibration suppression of tuning vibration absorber to structure and load is comparatively responsive, when On Damage State or load frequency spectral property change, be difficult to play due effect.Marmem (Shape Memory Alloy, SMA) is a kind of important intellectual material, has that fatigue resistance is good, damping capacity is strong, recoverable deformation is large and steady performance.At present, the marmem damping device spininess developed in field of civil engineering to general civil engineering structure, and is the damper that displacement is relevant substantially, is difficult to be applicable to self-supporting tall and slender structure.Therefore, exploitation one is easy to installation and maintenance, and can all the marmem damping vibration absorber of effective effectiveness in vibration suppression can be provided to have certain meaning for self-supporting tall and slender structure under different structure state and loading status.
Utility model content
the technical problem solved:the purpose of this utility model is that exploitation is a kind ofly applicable to self-supporting tall and slender structure, has Self-resetting function, is convenient to the relevant marmem damping vibration absorber of the curvature of installation and maintenance, this device all directions performance is identical, the vibration of the different directions caused for the dynamic loading such as wind load, geological process all has good attenuating, and structure can be resetted after vibration attenuation.
technical scheme:the utility model discloses annular curvature associated shape memorial alloy damping device, comprise bracing boom, inside/outside is flexible coupling shell, up/down cover plate, SMA rod/rope, limiting node, adjustment node, stationary nodes; It is characterized in that: described limiting node comprises triangular pyramidal support, steel annulus, connecting bolt; Described adjustment node comprises hold-down nut, adjusting nut, conversion screw rod, switching node; Described annular curvature associated shape memorial alloy damping device is connected with self-supporting tall and slender structure by up/down cover plate and bracing boom; SMA rod/rope is connected with up/down cover plate with stationary nodes by adjustment node; Limiting node limits when SMA rod is out of shape and the contact of structure, and adjustment node regulates the original state of SMA rod/rope.
Described annular curvature associated shape memorial alloy damping device, described annular curvature associated shape memorial alloy damping device is axially symmetric structure.
Described annular curvature associated shape memorial alloy damping device, the described inside/outside shell two ends that are flexible coupling are connected with up/down cover plate respectively.
Described annular curvature associated shape memorial alloy damping device, described pyrometric cone support is connected with steel annulus, and adopt connecting bolt limiting node is fixed in be flexible coupling on shell and self-supporting tall and slender structure.
Described annular curvature associated shape memorial alloy damping device, SMA rod/rope is through steel annulus, and one end is in stationary nodes, another section is connected with adjustment node, wherein SMA rod/rope is connected with conversion screw rod by switching node, utilizes adjusting nut, regulates the original state of SMA rod/rope.
Described annular curvature associated shape memorial alloy damping device, described annular curvature associated shape memorial alloy damping device form is annular, and mechanical characteristic is relevant to structural curvature, is applicable to the energy-eliminating shock-absorbing of self-supporting tall and slender structure.
Described annular curvature associated shape memorial alloy damping device, SMA rod/Suo Caiyong marmem is as Energy dissipating material, utilize the super-elasticity of marmem to provide passive energy dissipation ability, SMA rod/rope is by tightening or loosening the original state that adjusting nut arranges SMA rod/rope.
Described annular curvature associated shape memorial alloy damping device, the inside/outside shell that is flexible coupling adopts and has the protective material of flexible ability and safeguard function, and the Rigidity and strength of limiting node ensures that SMA rod/rope does not collide with agent structure.
Wherein, inside/outside be flexible coupling shell can free-extension within the specific limits; Limiting node is direct and chimney surface contact for control SMA rod/Suo Buzhi; Up/down cover plate is connected with main structure body is affixed, and adopts suitable stiffener to improve power transmission; Necessary pretreatment need be carried out by adjustment node to SMA rod/rope and (namely apply predeformation to SMA rod/rope, control the initial parameter initial strain of bar, initial stress and initial martensite percentage), to make vibration absorber in the surrender of relatively little curvature, produce relatively full hysteresis loop simultaneously.
Its cardinal principle is: when vibrational excitation is less, curvature is less, the fractional load being provided certain rigidity to share structure itself to bear by the SMA of austenitic state, reduces the load that agent structure is born; When vibrational excitation is larger, curvature is comparatively large, produces larger stress in SMA, device surrender (now martensitic traoformation occurs SMA) and under reciprocating load consumed energy, provide extra additional damping, thus the response of control subject structure; After vibrational excitation disappears, due to the super-elasticity of SMA, device recovers original shape and pulls structure recovery.The mechanical characteristic of numerical simulation vibration absorber as shown in Fig. 6, Fig. 7, Fig. 8 (wherein, SMA rod/rope diameter 0.01m, SMA rod/rope number 8, SMA rod/Suo Changdu 5.8m, SMA rod/rope, apart from centre distance 1.360m, be 0 degree of angle is No. 1 component, is No. 2 components and be an angle of 90 degrees is No. 3 components in miter angle with the direction of motion).
beneficial effect:
The annular shape memorial alloy damping device that a kind of curvature of the present utility model is relevant has the advantages such as simple structure, energy consumption effect are good, good endurance.Because shape memory alloy material selected by main material, the fatigue resistance of this device is good, damping capacity is strong, recoverable deformation is large and stable performance; Device entirety ringwise, is one to be respectively correlated with vibration absorber to the curvature that performance is identical, thus is specially adapted to the self-supporting tall and slender structures such as wind power generation stepped, self-supporting electric power pylon, high chimney, high pole street lamp; This vibration absorber is when static load or smaller power load action, for structure provides additional stiffness, opposing external force, under larger dynamic action, while certain rigidity is provided, stablize dissipate vibrational energy, thus reduce structural response, outer load reduces or after disappearance, makes structure have good self-resetting capability.This device can be widely used in the vibration isolation of self-supporting tall and slender structure.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is A-A cross-sectional view of the present utility model.
Fig. 3 is node 7 structural representation detail drawing of the present utility model.
Fig. 4 is node 6 radial section schematic diagram of the present utility model.
Fig. 5 is that node 6 level of the present utility model is to generalized section.
Fig. 6 is the moment-curvature relation figure of numerical simulation vibration absorber.
Fig. 7 is the SMA component stress-strain stress relation figure of numerical simulation vibration absorber.
Fig. 8 is the SMA component stress-curvature relationship figure of numerical simulation vibration absorber.
Have in above figure: self-supporting tall and slender structure 1; Bracing boom 2; Inside/outside is flexible coupling shell 3; Up/down cover plate 4; SMA rod/rope 5; Limiting node 6; Adjustment node 7; Stationary nodes 8; Triangular pyramidal support 61; Steel annulus 62; Connecting bolt 63; Hold-down nut 71; Adjusting nut 72; Conversion screw rod 73; Switching node 74.
Detailed description of the invention
Annular curvature associated shape memorial alloy damping device of the present utility model, comprises bracing boom 2, inside/outside is flexible coupling shell 3, up/down cover plate 4, SMA rod/rope 5, limiting node 6, adjustment node 7, stationary nodes 8; Described limiting node 6 comprises triangular pyramidal support 61, steel annulus 62, connecting bolt 63; Described adjustment node 7 comprises hold-down nut 71, adjusting nut 72, conversion screw rod 73, switching node 74; Described annular curvature associated shape memorial alloy damping device is connected with self-supporting tall and slender structure 1 by up/down cover plate 4 and bracing boom 2; SMA rod/rope 5 is connected with up/down cover plate 4 with stationary nodes 8 by adjustment node 7; Limiting node 6 limits when SMA rod 5 is out of shape and the contact of structure 1, and adjustment node 7 regulates the original state of SMA rod/rope 5.Described annular curvature associated shape memorial alloy damping device is axially symmetric structure.Described inside/outside shell 3 two ends that are flexible coupling are connected with up/down cover plate 4 respectively.Described pyrometric cone support 61 is connected with steel annulus 62, and adopt connecting bolt 63 limiting node 6 is fixed in be flexible coupling on shell 3 and self-supporting tall and slender structure 1.SMA rod/rope 5 is through steel annulus 62, and one end is in stationary nodes 8, and another section is connected with adjustment node 7, and wherein SMA rod/rope 5 is connected with conversion screw rod 73 by switching node 74, utilizes adjusting nut 72, regulates the original state of SMA rod/rope 5.Described annular curvature associated shape memorial alloy damping device form is annular, and mechanical characteristic is relevant to structural curvature, is applicable to the energy-eliminating shock-absorbing of self-supporting tall and slender structure 1.SMA rod/rope 5 adopts marmem as Energy dissipating material, utilizes the super-elasticity of marmem to provide passive energy dissipation ability, and SMA rod/rope 5 is by tightening or loosening the original state that adjusting nut 72 arranges SMA rod/rope 5.The inside/outside shell 3 that is flexible coupling adopts and has the protective material of flexible ability and safeguard function, and the Rigidity and strength of limiting node 6 ensures that SMA rod/rope 5 does not collide with agent structure.
Below in conjunction with technical scheme and accompanying drawing in detail implementation step of the present utility model is described in detail:
1. pair structure is analyzed, and calculates required vibration absorber parameter, determines the distance etc. in the radius of SMA component, quantity, length and the SMA component distance means center of circle accordingly.
2. damper is axially symmetric structure, concrete can according to self-supporting tall and slender structure situation when implementing, by the outside or inside of Plant arrangement in structure.
3. according to calculating the position determining up/down cover plate 4, and its shell with self-supporting tall and slender structure 1 is welded, between self-supporting tall and slender structure 1 and up/down cover plate 4, weld bracing boom 2, be flexible coupling in installation shell 3, and its two ends are reliably connected with up/down cover plate 4 respectively.
4. pyrometric cone support 61 and steel annulus 62 are welded together, and adopt connecting bolt 63 this entirety is fixed in be flexible coupling shell 3 and self-supporting tall and slender structure 1, these overall formation limiting nodes 6, plane of arrangement position is SMA setting position, along the distribution of device high uniformity, contact with main structure body for limiting SMA material.
5. SMA rod/rope 5 is passed steel annulus 62, one end is fixed in stationary nodes 8, and another section is connected in adjustment node 7, wherein SMA rod/rope 5 is connected with conversion screw rod 73 by switching node 74, utilize adjusting nut 72, regulate the original state of SMA rod/rope 5, to reach designing requirement.
6. last, outer connected with outer casing 3 is installed, is reliably connected with up/down cover plate 4, and carry out corresponding outward appearance process.
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; mild steel drag-line etc. is such as adopted to have the material substitution shape memory alloy material of damping characteristic; and replacement with bolts being welded to connect wherein; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (5)
1. annular curvature associated shape memorial alloy damping device, comprises bracing boom (2), inside/outside is flexible coupling shell (3), up/down cover plate (4), SMA rod/rope (5), limiting node (6), adjustment node (7), stationary nodes (8); It is characterized in that: described limiting node (6) comprises triangular pyramidal support (61), steel annulus (62), connecting bolt (63); Described adjustment node (7) comprises hold-down nut (71), adjusting nut (72), conversion screw rod (73), switching node (74); Described annular curvature associated shape memorial alloy damping device is connected with self-supporting tall and slender structure (1) by up/down cover plate (4) and bracing boom (2); SMA rod/rope (5) is connected with up/down cover plate (4) with stationary nodes (8) by adjustment node (7).
2. annular curvature associated shape memorial alloy damping device according to claim 1, is characterized in that: described annular curvature associated shape memorial alloy damping device is axially symmetric structure.
3. annular curvature associated shape memorial alloy damping device according to claim 1, is characterized in that: described inside/outside shell (3) two ends that are flexible coupling are connected with up/down cover plate (4) respectively.
4. annular curvature associated shape memorial alloy damping device according to claim 1, it is characterized in that: described pyrometric cone support (61) is connected with steel annulus (62), connecting bolt (63) is flexible coupling on shell (3) and self-supporting tall and slender structure (1) in being fixed on by limiting node (6).
5. annular curvature associated shape memorial alloy damping device according to claim 1, it is characterized in that: SMA rod/rope (5) is through steel annulus (62), one end is in stationary nodes (8), another section is connected with adjustment node (7), and wherein SMA rod/rope (5) is connected with conversion screw rod (73) by switching node (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063114.0U CN204491881U (en) | 2015-01-29 | 2015-01-29 | Annular curvature associated shape memorial alloy damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063114.0U CN204491881U (en) | 2015-01-29 | 2015-01-29 | Annular curvature associated shape memorial alloy damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204491881U true CN204491881U (en) | 2015-07-22 |
Family
ID=53571189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520063114.0U Expired - Fee Related CN204491881U (en) | 2015-01-29 | 2015-01-29 | Annular curvature associated shape memorial alloy damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204491881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674969A (en) * | 2015-01-29 | 2015-06-03 | 苏州科技学院 | Annular curvature-related shape memory alloy damping device |
| CN107401227A (en) * | 2017-09-12 | 2017-11-28 | 中冶建筑研究总院有限公司 | A kind of device and its installation method for being used to place tuned mass damper |
| CN108350702A (en) * | 2015-09-25 | 2018-07-31 | 罗马大学 | Air-inflated beam-string structure with shape memory wire rope |
-
2015
- 2015-01-29 CN CN201520063114.0U patent/CN204491881U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674969A (en) * | 2015-01-29 | 2015-06-03 | 苏州科技学院 | Annular curvature-related shape memory alloy damping device |
| CN108350702A (en) * | 2015-09-25 | 2018-07-31 | 罗马大学 | Air-inflated beam-string structure with shape memory wire rope |
| CN107401227A (en) * | 2017-09-12 | 2017-11-28 | 中冶建筑研究总院有限公司 | A kind of device and its installation method for being used to place tuned mass damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101575882B (en) | Mixed type shape memory alloy multi-dimensional vibration isolator | |
| CN106120545A (en) | A kind of method utilizing beam body to improve anti-seismic performance of beam bridge | |
| CN204491881U (en) | Annular curvature associated shape memorial alloy damping device | |
| CN105297939A (en) | Nonlinear dynamic vibration absorption and electromagnetic energy dissipation device | |
| CN103104646B (en) | Clamp type damper capable of controlling multi-dimensional vibration of tubular structure | |
| Zhang et al. | Control of wind‐induced vibration of transmission tower‐line system by using a spring pendulum | |
| CN107327193A (en) | A kind of 3-dimensional metal energy-consumption damper | |
| CN103174230A (en) | Novel energy eliminating and shake absorbing outrigger truss high-rise structure system | |
| Ding et al. | A toroidal tuned liquid column damper for multidirectional ground motion‐induced vibration control | |
| CN206256734U (en) | Eddy current damper damping control device | |
| CN102444684B (en) | Vibration absorber for cycloid type wind driven generator tower | |
| CN206554597U (en) | A kind of SMA Tendons applied to towering cylinder tower wind dynamic control | |
| CN104674969A (en) | Annular curvature-related shape memory alloy damping device | |
| Izadi et al. | Natural draft steel hyperbolic cooling towers: Optimization and performance evaluation | |
| CN106639470A (en) | Vibration-attenuation control device for eddy current damper | |
| CN208088298U (en) | Hydraulic pile hammer hammers core connection structure into shape | |
| CN201416607Y (en) | Honeycomb shape memory alloy multi-dimensional vibration absorber | |
| CN103790254A (en) | Steel and lead laminated annular damper | |
| CN101532547B (en) | Honeycomb type shape memory alloy multi-dimensional vibration damper | |
| CN202906342U (en) | Damping anti-galloping device used for divided conductor spacer | |
| CN205242248U (en) | Shape memory alloy cable shock mount | |
| CN202392035U (en) | Stay-wire type shock absorption system of electrical device | |
| Wang et al. | Dynamic analysis of offshore wind turbines subjected to the combined wind and ice loads based on the cohesive element method | |
| CN204370293U (en) | Bridge spring energy-dissipating and shock-absorbing stopping means | |
| CN203716050U (en) | Anti-knock and anti-drop beam system of small and medium-sized beam bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |