CN209082543U - It is a kind of to wave damping device with what basic ring type basis connected applied to Latticed Towers pedestal - Google Patents

Abstract

Damping device is waved with what basic ring type basis connected applied to Latticed Towers pedestal the utility model discloses a kind of, the damping device that waves is made of several element with variable rigidity being anchored between the pedestal (5) of Latticed Towers and basic (7), and the basis (7) is basic ring type basis；The basis ring type basis includes foundation ring (16) and basis (7), and the foundation ring (16) includes the basic ring wall (12) of foundation ring bottom plate (17), basic ring top board (11) and the connection foundation ring bottom plate (17) and basic ring top board (11).The damping device provided by the utility model that waves is simple and efficient, structure novel, and installation is simple, convenient for safeguarding, securely and reliably, can effectively improve the shock resistance of the Latticed Towers such as wind turbine tower.

Description

It is a kind of to wave damping with what basic ring type basis connected applied to Latticed Towers pedestal Device

Technical field

The utility model relates to what a kind of Latticed Towers and basis connected to wave damping device, and in particular to one kind is applied to Latticed Towers pedestal waves damping device with what basic ring type basis connected.

Background technique

Wind-power electricity generation has significant society and environmental benefit, for pushing China can as clean renewable energy The renewable sources of energy develop important in inhibiting, and country supports and encourages the exploitation to wind-powered electricity generation.China's wind resource is abundant, according to national gas As office's statistics, China whole nation wind energy concentration is about 100W/m², wind energy content is about 1.6x10⁵MW, potentiality to be exploited are huge.With This simultaneously, China is also the multiple country of earthquake.Both contained in many areas such as China Qinghai, Shandong, northeast and southeastern coast Wind energy abundant is also faced with higher seismic risk.How damage that geological process may cause Wind turbines is mitigated, It is to develop the problem of wind energy must face in China's relative region.

In Wind turbines, tower frame for wind generating set undertakes wind-power electricity generation for connecting wind turbine cabin and foundation Horizontal force, vertical force and moment of flexure when machine is run.Wind-force is sent out by the clamped cantilever design system in bottom that pylon and basis are constituted Motor support is in the high-altitude of 60~100m to obtain sufficient stable wind energy.Lead between steelwork tower truss and reinforced concrete foundation Often connected by steel base ring.Existing " the wind power plant unit ground foundation design code " FD003-2007 in China does not consider ground Shake acts on the influence to Wind turbines foundation structure.However, wind-driven generator quality is larger and is located at height in the air, in geological process Under, the Moment concentrated can be generated in the foundation anchor part of tower bottom, it is possible to fastening invalidation is caused, so as to cause tower Frame topples.How to pass through the glissando Latticed Towers similar to wind turbine tower etc. and carry out vibration control, wind is effectively reduced The dynamic response of tower improves military service performance, extends fatigue life, is that the utility model needs technical problems to be solved.

Damping device such as Chinese patent application about Latticed Towers pedestal and basis connection in the prior art CN102102637A, technical solution are: being equipped with cushion blocking 5 in the bottom of bracket base 4, the cushion blocking 5 is fixed on ground 6 On.The bottom end of the mobile jib 2 is equipped with cushion blocking 5, and mobile jib is fixed on cushion blocking 5, and cushion blocking 5 is fixed on ground 6.Again such as Chinese patent CN206600242U, technical solution are: the lower part of reinforced concrete plinth 17 is provided with built-in lower flange 18, The top of the reinforced concrete plinth 17 is provided with built-in upper flange 16, and the column 12 is fixed on the built-in upper flange 16 On, also, metal rubber shock pad 14 is provided between the column 12 and the built-in upper flange 16.

Above-mentioned patent is arranged resilient cushion directly between tower base and basis, and the damping effect of resilient cushion has when earthquake Limit, resilient cushion, which also lacks, waves mechanism, can not move the localized bumps to accompany, dissipation Seismic input energy by reciprocating swing Amount reduces the earthquake response of pylon superstructure, guarantees that the ability of superstructure safety is also limited.

Although it is noted that further relating to a kind of connection wind-driven generator 20 and vertical in Chinese patent CN206600242U The damper of column 12 can satisfy the damping requirement in the installation of wind-driven generator 20 and operational process, meet on resident's building The requirement of wind-driven generator is set, which includes upper end cover 1, lower convex platform 9 and honeycomb shock-absorbing sleeve 3, the upper end cover 1 and institute It states lower convex platform 9 to link together by bolt 4, metal rubber shock pad 8 is set between the upper end cover 1 and lower convex platform 9, it is described Upper flange plate is arranged in the lower end of upper end cover 1, and the top of the lower convex platform 9 is provided with lower flange, the upper flange plate and institute It states lower flange to link together by the bolt 4, metal pressure ring 7 is arranged in the top of the bolt 4, goes back outside the bolt 4 It is arranged with metal-rubber set 5, the metal-rubber set 5 is clipped between the metal pressure ring 7 and the upper flange plate；The technical side Although the isolation mounting that metal pressure ring 7 and metal-rubber set 5 are formed is arranged in case between bolt top and upper flange plate, should Damping scheme is vibrated not directed to earthquake for common, nor is to use for the damping of pylon in earthquake and basis connection To connect wind-driven generator 20 and column 12, and the damping scheme is also without the mechanism of waving, because of metal pressure ring 7 and metal rubber The isolation mounting that gum cover 5 is formed not is element with variable rigidity；The damping scheme also can not move the office to accompany by reciprocating swing Portion's collision, dissipation inputting seismic energy, the program reduces the earthquake response of pylon superstructure, guarantees superstructure peace when earthquake Full ability is also limited.

Utility model content

Lack the defect of earthquake resistant construction present in connecting for existing wind turbine tower with reinforced concrete foundation, this Utility model is designed to provide a kind of structure novel, and installation is simple, convenient for safeguarding, securely and reliably, can effectively improve all Such as device of wind turbine tower Latticed Towers shock resistance.

The technical solution of the utility model is as follows:

What a kind of pedestal applied to Latticed Towers was connected with basic ring type basis waves damping device, described to wave damping Device is made of several element with variable rigidity being anchored between the pedestal 5 of Latticed Towers and basis 7, and described basic 7 be basic ring Formula basis；The basis ring type basis includes foundation ring 16 and basis 7, and the foundation ring 16 includes foundation ring bottom plate 17, basis Ring top board 11 and the basic ring wall 12 for connecting the foundation ring bottom plate 17 and basic ring top board 11；The element with variable rigidity includes High-strength bolt 8, nut 9 and the earthquake isolating equipment 10 of preload；The earthquake isolating equipment 10, which is compacted, is anchored in the basic ring top board of pedestal 5/ Between 11 and nut 9.

Preferably, if 5 even circumferential of pedestal of the Latticed Towers lower end is offered and passed through for the high-strength bolt 8 of preload Dry first through hole 13, correspondingly, basic 11 circumference of ring top board are also uniformly provided with several the passed through for the high-strength bolt 8 of preload Two through-holes 14,10 middle part of earthquake isolating equipment also open up the third through-hole 15 passed through for the high-strength bolt 8 of preload, the base of Latticed Towers When seat 5 is with basic ring type foundation anchor, several first through hole 13, the second through-hole 14, third through-hole 15 form butt hole for pre-tightening High-strength bolt 8 pass through.

Preferably, when earthquake described in wave damping device enable to pedestal 5 and basis 7 between preload interface occur point From generation oscillating motion.

Preferably, the earthquake isolating equipment 10 is butterfly spring group or common pressure spring group；The butterfly spring group or common pressure Spring in spring group can be arranged with parallel/series.

Preferably, the Latticed Towers can communicate pylon or single hose electric power pylon for wind turbine tower, single hose Frame.

Preferably, when the pedestal of Latticed Towers 5 and basic ring top board 11 connect, several first through hole 13, the second through-hole 14, the butt hole that third through-hole 15 is formed is passed through for the high-strength bolt 8 of preload, and earthquake isolating equipment 10 is compressed and anchored by nut 9 Between the basic ring top board 11 of pedestal 5/ and nut 9.

Preferably, the earthquake isolating equipment 10 is located at the unilateral side or two sides of 11 linkage interface of pedestal 5 and basic ring top board.

It is a kind of that the basic ring type pedestal anchorage part of damping device connection is waved using the utility model, including described shake Put the pedestal 5 of damping device, basic ring type basis and Latticed Towers, it is described wave damping device setting on basic ring type basis and Between the pedestal 5 of Latticed Towers.

Compared with prior art, advantage is the utility model:

1 the utility model is amplification with the anti-seismic structure of wind turbine tower and basis connection, in similar Latticed Towers base Seat and basic ring type basis junction design structure is unique waves damping device, plays and waves cushioning effect, filled up the country Latticed Towers connect the design blank of antidetonation with basis.

The damping device that waves of 2 the utility model realizes that the multistage of rigidity becomes by multiple element with variable rigidity being evenly arranged Change, to meet performance requirement of the Latticed Towers under different force active state.Under normal operating condition, damping device is waved With identical rigidity is connect with tradition, guarantee the normal work of Latticed Towers；Make in the earthquake for earthquake or stronger of setting up defences Under, the preload interface for waving the element with variable rigidity of tension side in damping device is separated, and rigidity significantly reduces, to make tower The oscillating motion that one side compression of frame generation, the other side are lifted, as shown in Fig. 5.

3 under set up defences earthquake or stronger geological process, on the one hand, and the natural vibration period of pylon is extended, thus The predominant period of earthquake ground motion is avoided, seismic energy input is reduced；On the other hand by accompanying with reciprocating swing movement Localized bumps, dissipation inputting seismic energy can further decrease the earthquake response of pylon superstructure, to guarantee that top is tied The safety of structure.

The element with variable rigidity of 4 the utility model includes high-strength bolt, nut and the earthquake isolating equipment pre-tightened；The earthquake isolating equipment It is set to pedestal/between basis ring top board and nut, the earthquake isolating equipment can be butterfly spring group or common pressure spring group, pass through Damping is waved in butterfly spring group or the realization of common pressure spring group, and the utility model structure novel, installation is simple, convenient for safeguarding, safety Reliably.

5 the utility model can rationally design spring in butterfly spring group or common pressure spring group according to needed for Aseismic Design Quantity, and butterfly spring group or common pressure spring group can be located at the unilateral side or two sides of pedestal and basic ring top board linkage interface； Spring in butterfly spring group or common pressure spring group can be arranged in parallel, and can also be arranged in series, so that using more flexible height Effect.

Detailed description of the invention

Fig. 1 wind turbine tower connect anchorage part schematic diagram with basis；

Fig. 2 waves the element with variable rigidity sectional view of damping device；

Fig. 3 waves the element with variable rigidity top view of damping device；

The basis Fig. 4 ring type pedestal anchorage part waves damping device schematic diagram；

Oscillating motion schematic diagram occurs for tower base under Fig. 5 geological process；

Fig. 6 waves damping device element with variable rigidity tension behavior schematic diagram.

Description of symbols: generator bay 1, blade 2, bump joint 3, pylon stack shell 4, pedestal 5, ground 6, basis 7, height Strength bolt 8, nut 9, earthquake isolating equipment 10, basic ring top board 11, basic ring wall 12, first through hole 13, the second through-hole 14, third Through-hole 15, foundation ring 16, foundation ring bottom plate 17, compression-side high-strength bolt 18, tension side high-strength bolt 19, tension side pedestal lift Distance S, traditional high-strength bolt connection tension curve a, element with variable rigidity tension curve b, interfacial separation point c, groups of springs pressure are pre-tightened Tight point d, high-strength bolt yield point e, serviceability limit state point f, seismic performance of setting up defences point g, rarely occurred earthquake functionality It can point h.

Specific embodiment

Combined with specific embodiments below the utility model to be further described, but the utility model is not limited to In these specific embodiments.One skilled in the art would recognize that the utility model covers in Claims scope All alternatives, improvement project and the equivalent scheme that may include.

The structural principle of the utility model and working principle are described in detail with reference to the accompanying drawing:

It as shown in Fig. 1, is a typical wind turbine tower and basis connection anchorage part schematic diagram, the wind-force Power generation pylon is formed by connecting by multistage pylon stack shell 4 by bump joint 3, and the wind turbine tower upper end connects generator bay 1 and blade 2 form wind power generating set；The wind turbine tower lower end is pedestal 5, the base that the pedestal 5 passes through steel The connection of plinth ring 16 is located at the reinforced concrete foundation 7 below of ground 6.

Damping device is waved by the way that the utility model is arranged in the attached wind turbine tower shown in FIG. 1, can permit Reciprocating swing movement occurs under violent earthquake effect for tower base 5, achievees the purpose that damping.It is described to wave damping device setting Between tower base 5 and basis 7.

As shown in attached drawing 2,3,4, if the damping device that waves is by for being anchored between tower base 5 and basis 7 Dry element with variable rigidity is constituted, and described basic 7 be basic ring type basis；The basis ring type basis includes foundation ring 16 and basis 7, The foundation ring 16 includes foundation ring bottom plate 17, basic ring top board 11 and the connection foundation ring bottom plate 17 and basic ring top board 11 basic ring wall 12；The element with variable rigidity includes high-strength bolt 8, nut 9 and the earthquake isolating equipment 10 pre-tightened, the shock insulation dress Setting 10 can be butterfly spring group or common pressure spring group；The even circumferential of the pedestal 5 of the wind turbine tower lower end offers For several first through hole 13 that the high-strength bolt 8 of preload passes through, correspondingly, if the circumference of basic ring top board 11 is also uniformly provided with The second through-hole 14 that the dry high-strength bolt 8 for preload passes through, 10 middle part of earthquake isolating equipment also open up the high-strength bolt 8 for preload The third through-hole 15 passed through, the earthquake isolating equipment 10 are set between the basic ring top board 11 of pedestal 5/ and nut 9.When 5 He of pedestal When basic ring top board 11 connects, several first through hole 13, the second through-hole 14, third through-hole 15 form butt hole for the high-strength of preload Bolt 8 passes through, and finally 10 clamping of earthquake isolating equipment is anchored between the basic ring top board 11 of pedestal 5/ and nut 9 with nut 9.

It should be noted that technical staff can rationally design butterfly spring group or common pressure according to needed for Aseismic Design The quantity of spring in spring group, butterfly spring group or common pressure spring group can be located at the list of 11 linkage interface of pedestal 5 and basic ring top board Side is not shown, and the two sides that may be alternatively located at 11 linkage interface of pedestal 5 and basic ring top board are as shown in Fig. 2.In addition, being set according to antidetonation Required and pretightning force and the size for waving displacement are counted, the spring in butterfly spring group or common pressure spring group can be arranged in parallel, It can also be arranged in series.

It as shown in Fig. 4, is the schematic diagram for waving damping device and being applied to basic ring type pedestal of the utility model: a kind of The basic ring type pedestal anchorage part connected using damping device is waved, including wave damping device, basic ring type basis and tower Frame pedestal 5, it is described to wave damping device setting between basic ring type basis and tower base 5；The foundation ring 16 includes base The basic ring wall 12 of plinth ring bottom plate 17, basic ring top board 11 and the connection foundation ring bottom plate 17 and basic ring top board 11；Wherein, The damping device that waves includes several element with variable rigidity；Foundation ring 16 is located in basis 7, the circumferentially uniform cloth of tower base 5 Several first through hole 13 are equipped with, correspondingly, basic ring top board 11 has also circumferentially been evenly arranged several second through-holes 14, works as pylon When pedestal 5 and the docking of basic about 11 ring top board anchor, several element with variable rigidity are evenly arranged in first through hole 13 and the In the butt hole that two through-holes 14 are formed.

The damping device that waves of the utility model realizes that the multistage of rigidity becomes by multiple element with variable rigidity being evenly arranged Change, to meet performance requirement of the wind turbine tower under different force active state.Under normal operating condition, damping is waved Device, which has, connect identical rigidity with tradition, guarantees the normal work of wind turbine tower；In the earthquake or more strong of setting up defences Geological process under, as shown in Fig. 5, wave the element with variable rigidity of tension side in damping device preload interface occur separation ginseng See tension side high-strength bolt 19, rigidity significantly reduces, thus the side compression that pylon occurs referring to compression-side high-strength bolt 18, Lift the oscillating motion that distance S is lifted referring to tension side pedestal in the other side.In this case, on the one hand, the natural vibration period of pylon Extended, to avoid the predominant period of earthquake ground motion, reduces seismic energy input；On the other hand by with toward rereeling The localized bumps that pendular motion accompanies, dissipation inputting seismic energy can further decrease the earthquake response of pylon superstructure, from And guarantee the safety of superstructure.

As shown in Fig. 6, damping device element with variable rigidity tension behavior schematic diagram is waved for the utility model, referring to this Figure, is described below the mechanism of the utility model:

Curve a is that traditional high-strength bolt connects tension curve；Curve b is element with variable rigidity tension curve；Work as wind-power electricity generation When pylon is in normal operating condition, wave Moment that damping device is subject to it is smaller when, tension side becomes what rigid unit was subject to Pulling force is less than its initial pretightening force, and linkage interface is in impaction state, and element with variable rigidity has very big tension rigidity；Work as pylon When surmounting serviceability limit state point f under the short-term side force effect such as earthquake, at the beginning of the pulling force that element with variable rigidity is subject to is greater than it Beginning pretightning force, referring to interfacial separation point c is pre-tightened, linkage interface separates at this time, under the tension rigidity of element with variable rigidity is significant Drop, and linear behavior is shown referring to the seismic performance point g that sets up defences in biggish deformation range.If external action is into one Step is increased referring to rarely occurred earthquake effect propety point h, and butterfly spring group or common pressure spring group are fully pressed and compress referring to groups of springs Point d, the tension rigidity of element with variable rigidity, which has, to be significantly increased, until high-strength bolt tension is surrendered referring to high-strength bolt yield point e. Compared with traditional high-strength bolt connection, element with variable rigidity significantly improves the deformability of junction, has postponed high-strength bolt Surrender.

It should be understood that the step of method of the utility model description, is only exemplary description, it is first laggard to it Capable time sequencing does not have special requirement, unless itself there is inevitable sequencing relationship.

As it appears from the above, although the utility model is illustrated with reference to limited embodiment and attached drawing, originally practical Have can carrying out various modifications and deform from this record per capita for usual knowledge in novel fields.Other realities as a result, It applies example and claims and equivalent belongs to scope of protection of the claims.

Claims (7)

1. a kind of wave damping device with what basic ring type basis connected applied to Latticed Towers pedestal, which is characterized in that described It waves damping device to be made of several element with variable rigidity being anchored between the pedestal (5) of Latticed Towers and basic (7), the base Plinth (7) is basic ring type basis；The basis ring type basis includes foundation ring (16) and basic (7), foundation ring (16) packet Include the basis of foundation ring bottom plate (17), basic ring top board (11) and the connection foundation ring bottom plate (17) and basic ring top board (11) Ring wall (12)；The element with variable rigidity includes high-strength bolt (8), nut (9) and the earthquake isolating equipment (10) pre-tightened；The shock insulation dress It sets (10) and is compacted and be anchored in pedestal (5)/between basis ring top board (11) and nut (9).

2. according to claim 1 wave damping device, it is characterised in that: pedestal (5) circle of the Latticed Towers lower end It is uniformly provided with several first through hole (13) passed through for the high-strength bolt (8) of preload week, correspondingly, basic ring top board (11) circle Also several second through-holes (14) passed through for the high-strength bolt (8) of preload are uniformly provided with week, are also opened in the middle part of earthquake isolating equipment (10) If for the third through-hole (15) that the high-strength bolt (8) of preload passes through, the pedestal (5) of Latticed Towers and basic ring type foundation anchor When, several first through hole (13), the second through-hole (14), third through-hole (15) form butt hole and wear for the high-strength bolt (8) of preload It crosses.

3. according to claim 2 wave damping device, it is characterised in that: when the pedestal (5) and foundation ring of Latticed Towers When top plate (11) connects, the butt hole that several first through hole (13), the second through-hole (14), third through-hole (15) are formed is for pre- Tight high-strength bolt (8) passes through, and earthquake isolating equipment (10) are compressed and be anchored in pedestal (5)/basis ring top board (11) and spiral shell by nut (9) Between female (9).

4. according to claim 1 wave damping device, it is characterised in that: waving damping device described in when earthquake can make It obtains the preload interface between pedestal (5) and basic (7) and separates generation oscillating motion.

5. according to claim 1 wave damping device, it is characterised in that: the earthquake isolating equipment (10) is butterfly spring group Or common pressure spring group；Spring in the butterfly spring group or common pressure spring group can be arranged with parallel/series.

6. according to claim 1-5 wave damping device, it is characterised in that: the Latticed Towers can be wind Power power generation pylon, single hose communication pylon or single hose power transmission line pylon.

7. according to claim 1-5 wave damping device, it is characterised in that: the earthquake isolating equipment (10) is located at The unilateral side or two sides of pedestal (5) and basic ring top board (11) linkage interface.