CA2928323A1 - Support structure comprising a shock absorbing pillar - Google Patents
Support structure comprising a shock absorbing pillar Download PDFInfo
- Publication number
- CA2928323A1 CA2928323A1 CA2928323A CA2928323A CA2928323A1 CA 2928323 A1 CA2928323 A1 CA 2928323A1 CA 2928323 A CA2928323 A CA 2928323A CA 2928323 A CA2928323 A CA 2928323A CA 2928323 A1 CA2928323 A1 CA 2928323A1
- Authority
- CA
- Canada
- Prior art keywords
- pillar
- support structure
- slot
- helical slot
- helical
- 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.)
- Granted
Links
- 230000004323 axial length Effects 0.000 claims description 6
- 230000035939 shock Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 2
- IJJWOSAXNHWBPR-HUBLWGQQSA-N 5-[(3as,4s,6ar)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]-n-(6-hydrazinyl-6-oxohexyl)pentanamide Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)NCCCCCC(=O)NN)SC[C@@H]21 IJJWOSAXNHWBPR-HUBLWGQQSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
L' invention propose une structure de support (10) comportant au moins un pilier (16) cylindrique d'axe principal vertical, dont une extrémité inférieure (16i) est reliée au sol (14) et dont l'extrémité supérieure (16s) est reliée à un composant à supporter, caractérisée en ce que le pilier (16) comporte au moins une fente (20) hélicoïdale coaxiale à l'axe principal du pilier (16).
Description
SUPPORT STRUCTURE COMPRISING A SHOCK ABSORBING PILLAR
DESCRIPTION
TECHNICAL FIELD
The invention provides a support structure, in particular for medium-, high-, or very high-voltage switchgear.
More particularly, the invention provides a support structure that is of relatively simple design and that is designed to absorb vibrations generated during a seismic shock, for example.
STATE OF THE PRIOR ART
A seismic shock may be characterized by a plurality of excitation frequencies that are transmitted to elements that are in contact with the ground. Some of those frequencies are high, medium, or low.
Bach element in contact with the ground has at least one resonant frequency that is a frequency at which the amplitude of the vibrations of the element increases progressively when the element is excited at said resonant frequency.
It is known to connect elements to the ground by means of a support structure that has vibration-absorbing properties, in particular for absorbing seismic vibrations, in order to limit the vibrations that are transmitted to the element.
In general manner, a switchgear support structure consists in a structure of the all-welded type that comprises shock-absorbing elements such as elastically deformable blocks or resilient springs.
The design of the support structure and the choice of shock absorbing elements are defined as a function of the dimensions and of the weight of the support structure and of the supported element, in order to absorb vibratory excitations of frequency corresponding to each of the resonant frequencies of the unit formed by the support structure and the supported element.
That generally leads to making a support structure that is particularly complex and therefore costly.
The invention aims to provide a support structure that is of relatively simple design, comprising a limited number of components, and that is capable of absorbing vibrations coming from a seismic shock, for example.
SUMMARY OF THE INVENTION
A support structure comprising at least one cylindrical pillar of vertical main axis, having a bottom end that is connected to the ground and a top end connected to a component to be supported;
the support structure being characterized in that the pillar includes at least one helical slot coaxial about the main axis of the pillar.
The helical groove makes it possible to impart both vertical and horizontal resilience to the pillar, which resilience may be adjusted and matched to the various resonant frequencies that the unit formed by the support structure and the supported element may possess.
Preferably, the pitch of said at least one helical slot is constant over the entire axial length of the slot.
Preferably, the pitch of said at least one helical slot varies over the entire axial length of the slot.
Preferably, the width of said at least one helical slot is constant over the entire axial length of the slot.
Preferably, the width of said at least one helical slot varies over the entire axial length of the slot.
Preferably, the pillar includes a plurality of helical slots that are axially offset.
Preferably, at least one end of said at least one helical slot opens out into a rounded hole.
Preferably, at least one end of said at least one helical slot opens out at a top or bottom end of the pillar.
Preferably, the support structure comprises a plurality of parallel pillars.
BRIEF DESCRIPTION OF THE DRAWING
The sole figure is a diagram showing a support structure of the invention comprising a single vertical pillar and including one helical groove.
DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS
The sole figure shows a support structure 10 for a component such as for example a support structure for medium-, high-, or very high-voltage switchgear.
The structure 10 mainly comprises a support base 12 that is fastened to the ground 14, at least one pillar 16 of vertical main orientation, having its bottom end 16i fastened to the base 12 and a support plate 18 fastened to the top end 16s of the pillar 16, on which the component to be supported is fastened.
The pillar 16 consists in a cylindrical tubular element, e.g. of circular section.
In a variant embodiment, the structure 10 comprises a plurality of parallel pillars 16 distributed horizontally between the base 12 and the support plate 18, which pillars are distributed at the vertices of a polygon such as a triangle of a square, for example.
The pillar 16 includes a helical slot 20 that extends coaxially about the main axis A of the pillar 16. This helical slot 20 provides the pillar 16 with the capacity to deform elastically at least in the axial direction.
Preferably, the helical slot imparts both vertical and horizontal resilience to the pillar 16, making it possible for the pillar to deform in ahl directions.
By deforming elastically, the pillar 16 is thus capable of attenuating certain vibrations produced during a seismic shock.
The helical slot 20 is defined by a pitch 22 and a width 24 of the helical slot 20, measured axially.
The pitch 22 and the width 24 of the helical slot 20 are defined as a function of each of =the resonant frequencies defined by the unit constituted by the structure 10 and the element supported by the structure 10.
In the embodiment shown, the pillar 16 includes a single helical slot 20 of pitch 22 and length 24 that are constant.
In a variant embodiment, the pillar includes a plurality of slots 20 that are axially offset relative to one another.
In another variant embodiment, the pitch 22 of the helical slot 20 varies along the main axis A of the pillar 16.
Also, in another variant embodiment, the length 24 of the helical slot 20 varies along the main axis A of the pillar 16.
In another aspect of the helical slot 20, at least one of its ends opens out at an associated end 16i, 16s of the pillar 16.
In a variant, at least one end of the helical slot 20 is situated axially at a distance from the associated end 16i, 16s of the pillar 16 and it opens out into an orifice of rounded shape that is formed in the pillar 16. The purpose of the orifice is to limit stress concentration at said end of the helical slot 20.
It should be understood that each variant embodiment of the pillar 16 may be implemented alone or in combination.
Thus, each slot 20 may have at least one portion having pitch 22 and/or width 24 that are variable and at least one other portion having pitch 22 and/or width 24 that are constant.
The same applies when the pillar 16 includes a plurality of slots 20, the slots 20 being suitable for being made in different ways, so as to impart the desired vibration-absorbing properties to the structure 10.
DESCRIPTION
TECHNICAL FIELD
The invention provides a support structure, in particular for medium-, high-, or very high-voltage switchgear.
More particularly, the invention provides a support structure that is of relatively simple design and that is designed to absorb vibrations generated during a seismic shock, for example.
STATE OF THE PRIOR ART
A seismic shock may be characterized by a plurality of excitation frequencies that are transmitted to elements that are in contact with the ground. Some of those frequencies are high, medium, or low.
Bach element in contact with the ground has at least one resonant frequency that is a frequency at which the amplitude of the vibrations of the element increases progressively when the element is excited at said resonant frequency.
It is known to connect elements to the ground by means of a support structure that has vibration-absorbing properties, in particular for absorbing seismic vibrations, in order to limit the vibrations that are transmitted to the element.
In general manner, a switchgear support structure consists in a structure of the all-welded type that comprises shock-absorbing elements such as elastically deformable blocks or resilient springs.
The design of the support structure and the choice of shock absorbing elements are defined as a function of the dimensions and of the weight of the support structure and of the supported element, in order to absorb vibratory excitations of frequency corresponding to each of the resonant frequencies of the unit formed by the support structure and the supported element.
That generally leads to making a support structure that is particularly complex and therefore costly.
The invention aims to provide a support structure that is of relatively simple design, comprising a limited number of components, and that is capable of absorbing vibrations coming from a seismic shock, for example.
SUMMARY OF THE INVENTION
A support structure comprising at least one cylindrical pillar of vertical main axis, having a bottom end that is connected to the ground and a top end connected to a component to be supported;
the support structure being characterized in that the pillar includes at least one helical slot coaxial about the main axis of the pillar.
The helical groove makes it possible to impart both vertical and horizontal resilience to the pillar, which resilience may be adjusted and matched to the various resonant frequencies that the unit formed by the support structure and the supported element may possess.
Preferably, the pitch of said at least one helical slot is constant over the entire axial length of the slot.
Preferably, the pitch of said at least one helical slot varies over the entire axial length of the slot.
Preferably, the width of said at least one helical slot is constant over the entire axial length of the slot.
Preferably, the width of said at least one helical slot varies over the entire axial length of the slot.
Preferably, the pillar includes a plurality of helical slots that are axially offset.
Preferably, at least one end of said at least one helical slot opens out into a rounded hole.
Preferably, at least one end of said at least one helical slot opens out at a top or bottom end of the pillar.
Preferably, the support structure comprises a plurality of parallel pillars.
BRIEF DESCRIPTION OF THE DRAWING
The sole figure is a diagram showing a support structure of the invention comprising a single vertical pillar and including one helical groove.
DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS
The sole figure shows a support structure 10 for a component such as for example a support structure for medium-, high-, or very high-voltage switchgear.
The structure 10 mainly comprises a support base 12 that is fastened to the ground 14, at least one pillar 16 of vertical main orientation, having its bottom end 16i fastened to the base 12 and a support plate 18 fastened to the top end 16s of the pillar 16, on which the component to be supported is fastened.
The pillar 16 consists in a cylindrical tubular element, e.g. of circular section.
In a variant embodiment, the structure 10 comprises a plurality of parallel pillars 16 distributed horizontally between the base 12 and the support plate 18, which pillars are distributed at the vertices of a polygon such as a triangle of a square, for example.
The pillar 16 includes a helical slot 20 that extends coaxially about the main axis A of the pillar 16. This helical slot 20 provides the pillar 16 with the capacity to deform elastically at least in the axial direction.
Preferably, the helical slot imparts both vertical and horizontal resilience to the pillar 16, making it possible for the pillar to deform in ahl directions.
By deforming elastically, the pillar 16 is thus capable of attenuating certain vibrations produced during a seismic shock.
The helical slot 20 is defined by a pitch 22 and a width 24 of the helical slot 20, measured axially.
The pitch 22 and the width 24 of the helical slot 20 are defined as a function of each of =the resonant frequencies defined by the unit constituted by the structure 10 and the element supported by the structure 10.
In the embodiment shown, the pillar 16 includes a single helical slot 20 of pitch 22 and length 24 that are constant.
In a variant embodiment, the pillar includes a plurality of slots 20 that are axially offset relative to one another.
In another variant embodiment, the pitch 22 of the helical slot 20 varies along the main axis A of the pillar 16.
Also, in another variant embodiment, the length 24 of the helical slot 20 varies along the main axis A of the pillar 16.
In another aspect of the helical slot 20, at least one of its ends opens out at an associated end 16i, 16s of the pillar 16.
In a variant, at least one end of the helical slot 20 is situated axially at a distance from the associated end 16i, 16s of the pillar 16 and it opens out into an orifice of rounded shape that is formed in the pillar 16. The purpose of the orifice is to limit stress concentration at said end of the helical slot 20.
It should be understood that each variant embodiment of the pillar 16 may be implemented alone or in combination.
Thus, each slot 20 may have at least one portion having pitch 22 and/or width 24 that are variable and at least one other portion having pitch 22 and/or width 24 that are constant.
The same applies when the pillar 16 includes a plurality of slots 20, the slots 20 being suitable for being made in different ways, so as to impart the desired vibration-absorbing properties to the structure 10.
Claims (7)
1. A support structure (10) comprising at least one cylindrical pillar (16) of vertical main axis, having a bottom end (16i) that is connected to the ground (14) and a top end (16s) connected to a component to be supported, wherein the pillar (16) includes at least one helical slot (20) coaxial about the main axis of the pillar (16), characterized in that the pitch (22) of said at least one helical slot (20) varies over the entire axial length of the slot (20).
2. A support structure (10) according to claim 1, characterized in that the width (24) of said at least one helical slot (20) is constant over the entire axial length of the slot (20).
3. A support structure (10) according to claim 1, characterized in that the width (24) of said at least one helical slot (20) varies over the entire axial length of the slot (20).
4. A support structure (10) according to claim 1, characterized in that the pillar (16) includes a plurality of helical slots (20) that are axially offset.
5. A support structure (10) according to claim 1, characterized in that at least one end of said at least one helical slot (20) opens out into a rounded hole.
6. A support structure (10) according to claim 1, characterized in that at least one end of said at least one helical slot (20) opens out at a top (16s) or bottom end (16i) of the pillar (16).
7. A support structure (10) according to any preceding claim, characterized in that it comprises a plurality of pillars (16) that are parallel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1360517A FR3012692B1 (fr) | 2013-10-29 | 2013-10-29 | Structure de support comportant un pilier amortisseur de vibrations |
| FR1360517 | 2013-10-29 | ||
| PCT/EP2014/073081 WO2015063065A1 (fr) | 2013-10-29 | 2014-10-28 | Structure de support comportant un pilier amortisseur de vibrations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2928323A1 true CA2928323A1 (fr) | 2015-05-07 |
| CA2928323C CA2928323C (fr) | 2021-11-02 |
Family
ID=50101971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2928323A Active CA2928323C (fr) | 2013-10-29 | 2014-10-28 | Support structure comprising a shock absorbing pillar |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9890897B2 (fr) |
| CA (1) | CA2928323C (fr) |
| FR (1) | FR3012692B1 (fr) |
| WO (1) | WO2015063065A1 (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017200671A1 (de) * | 2017-01-17 | 2018-07-19 | Thyssenkrupp Ag | Pfeiler mit lastverzweigendem Knoten und einstellbaren Auslaufwinkel |
| CN111997431A (zh) * | 2020-09-01 | 2020-11-27 | 马鞍山辰慕芸智能科技发展有限公司 | 一种利用薄壁屈曲扭转的防主塔扭力输电塔 |
| CN111877841B (zh) * | 2020-09-01 | 2021-06-29 | 马鞍山辰慕芸智能科技发展有限公司 | 一种利用薄壁屈曲扭转的防伸臂扭力的输电塔 |
| CN112012551B (zh) * | 2020-09-02 | 2021-07-09 | 马鞍山辰慕芸智能科技发展有限公司 | 一种橡胶弹性的可自复位维修扭转伸臂上升的输电塔 |
| CN112012550A (zh) * | 2020-09-02 | 2020-12-01 | 马鞍山辰慕芸智能科技发展有限公司 | 一种利用液压阻尼扭转伸臂上升的输电塔 |
| CN111927186B (zh) * | 2020-09-02 | 2021-07-09 | 马鞍山辰慕芸智能科技发展有限公司 | 一种铅芯橡胶扭转上升的输电塔 |
| CN111877837B (zh) * | 2020-09-02 | 2021-06-29 | 马鞍山辰慕芸智能科技发展有限公司 | 一种橡胶金属阻尼器耗能扭转伸臂上升的输电塔 |
| CN111877838B (zh) * | 2020-09-02 | 2021-06-15 | 马鞍山辰慕芸智能科技发展有限公司 | 一种橡胶金属阻尼器耗能的防主塔扭力输电塔 |
| CN111877839A (zh) * | 2020-09-02 | 2020-11-03 | 马鞍山辰慕芸智能科技发展有限公司 | 一种利用液压阻尼的可自复位维修的防主塔扭力的输电塔 |
| CN112012552B (zh) * | 2020-09-02 | 2021-07-09 | 马鞍山辰慕芸智能科技发展有限公司 | 一种利用液压阻尼的可自复位维修的伸臂上升的输电塔 |
| CN112112469B (zh) * | 2020-09-23 | 2021-07-16 | 马鞍山辰慕芸智能科技发展有限公司 | 一种金属阻尼器耗能液压复位的防主塔扭力输电塔 |
| CN112942682B (zh) * | 2021-01-27 | 2022-06-14 | 上海绿地建设(集团)有限公司 | 一种多腔钢管混凝土柱 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1977175A (en) * | 1933-07-18 | 1934-10-16 | Howard C Davis | Pipe fitting |
| US3781639A (en) * | 1971-10-08 | 1973-12-25 | Hipotronics | High voltage accelerator power supply |
| US4634434A (en) * | 1985-02-19 | 1987-01-06 | Biomedical Dynamics Corporation | Apparatus for regulating the flow of fluid in medical apparatus |
| US4835924A (en) * | 1986-12-17 | 1989-06-06 | Tate Acess Floors | Self-gridding flooring system |
| BE1013067A4 (fr) * | 1997-10-31 | 2001-09-04 | Buzon Scril Atel | Dispositif de reglage d'inclinaison de surface de construction sur plot. |
| JP3607593B2 (ja) * | 2000-11-01 | 2005-01-05 | 早川ゴム株式会社 | 間仕切り壁構造 |
| US6637161B1 (en) * | 2000-11-28 | 2003-10-28 | Steelcase Development Corporation | Floor system |
| JP2002227898A (ja) * | 2001-02-06 | 2002-08-14 | Tomoe Corp | 免震ダンパー |
| AT506245B1 (de) * | 2008-01-15 | 2009-12-15 | Thaller Johann | Stützsäule für ein bauwerk |
| US20090206231A1 (en) * | 2008-02-19 | 2009-08-20 | Steven Andrew Firman | Adjustable equipment assembly and base therefor |
| JP4525781B2 (ja) * | 2008-03-24 | 2010-08-18 | ブラザー工業株式会社 | 画像処理装置 |
| US7921612B2 (en) * | 2008-08-31 | 2011-04-12 | United Construction Products, Inc. | Method and device for supporting a structure |
| FR2981494B1 (fr) | 2011-10-18 | 2020-09-18 | Alstom Technology Ltd | Conducteur leger pour appareillage electrique et appareillage electrique comportant au moins un tel conducteur |
| AU2014244151B2 (en) * | 2013-03-13 | 2017-07-27 | The Ipe Clip Fastener Company, Llc | Pedestal elevation system |
-
2013
- 2013-10-29 FR FR1360517A patent/FR3012692B1/fr active Active
-
2014
- 2014-10-28 CA CA2928323A patent/CA2928323C/fr active Active
- 2014-10-28 US US15/031,423 patent/US9890897B2/en active Active
- 2014-10-28 WO PCT/EP2014/073081 patent/WO2015063065A1/fr active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| FR3012692B1 (fr) | 2017-09-15 |
| CA2928323C (fr) | 2021-11-02 |
| US9890897B2 (en) | 2018-02-13 |
| FR3012692A1 (fr) | 2015-05-01 |
| WO2015063065A1 (fr) | 2015-05-07 |
| US20160258570A1 (en) | 2016-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20191001 |