CN203455243U - Novel model testing platform for superstructure-foundation-soil power interaction of offshore wind turbine - Google Patents
Novel model testing platform for superstructure-foundation-soil power interaction of offshore wind turbine Download PDFInfo
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Abstract
The utility model provides a whole set of model testing platform for researching a superstructure-foundation-soil power interaction of an offshore wind turbine. The model testing platform comprises a foundation part and three sets of constituent parts which are assembled unsimultaneously, wherein the foundation part comprises a rectangular test groove and a suction type barrel-shaped foundation, and a plurality of micropore permeable thin sheets are adhered to the inner wall and the outer wall of the suction type barrel-shaped foundation. The model testing platform comprises the foundation part and the three sets of constituent parts which are assembled unsimultaneously, wherein after the foundation of simulating a silty soil seabed is arranged in the test groove, data obtained by tests performed by the first set of constituent part and the second set of constituent part is tested after the third set of constituent part is installed so that the foundation rigidity of a wind turbine structure under the action of a cyclic load with a certain characteristics and a development evolution process of the power characteristic of a superstructure can be obtained. Through a conclusion obtained by the testing platform provided by the utility model, a theoretical research blank on the aspect at home and abroad can be effectively filled to a certain extent, and a certain guiding function is provided for the structure design of the offshore wind turbine in future.
Description
Technical field
The utility model relates to offshore test platform, particularly the model test platform of offshore wind turbine superstructure, basis and native dynamic interaction.
Background technology
Wind energy on the sea, as a kind of safe, clean, stable regenerative resource, has obtained large-scale development and utilization in western countries such as America and Europes.Day by day serious along with energy shortage and problem of environmental pollution, the total installation of generating capacity that China has also proposed to realize offshore wind farm during " 12 " reached the target of 5000MW in 2015.
At present, 3MW offshore wind turbine blade rotation speed under accidental conditions is approximately 8.6～18.4rpm, and the 1P excitation force frequency producing is 0.14～0.31Hz; For the blower fan of three blades, the 3P excitation force frequency " capture-effect " of blower fan pylon being produced due to blade rotation is 0.42～0.93Hz.In addition, for special environmental load forms such as the suffered wind of offshore wind turbine, wave, streams, the dominant frequency of wind and wave and stream load is 0.1～1.0Hz.The design of current blower fan structure with reference to more external DNV standard again on the basis of 1P and 3P frequency band, while having proposed blower fan structure design, should reserve ± 10% degree of safety.Therefore, in blower fan structure design, the danger of resonance occurs close to the frequency band of these exciting forces for fear of the natural frequency of vibration of structure, be a huge challenge for blower fan structure designer.At present, considering on the basis of safety of structure and economical rationality the structural design target of general selection " just-soft (soft-stiff) " property (the design natural frequency of vibration of blower fan structure is between 1P and 3P frequency band).
Offshore wind turbine is a kind of structure of high flexibility, and himself kinematic behavior is very responsive with the variation of soil rigidity.Therefore, the safety of foundation structure and stable be total can normally move basic.And the construction cost of offshore wind turbine foundation structure has accounted for 34% more than of total cost at present, therefore select a suitable base_structure types and size in fan design, be the key of high efficiency, low cost exploitation wind energy on the sea.If according to the design criteria of ultimate bearing capacity state, the general equal energy engineering demands of the design of fan foundation structure.But blower fan structure is except meeting ultimate bearing capacity state (ULS), the prior requirement that also will meet military service ultimate limit state (SLS) and fatigue limit state (FLS).The research team that professor Houlsby of Regius professor of take is in the world representative, with regard to the military service ultimate limit state (SLS) of offshore wind turbine foundation structure, carried out scarcely with the model investigation of guide, the main focus of paying close attention to is the key scientific problems such as the accumulated deformation of basis under cyclic load and Stiffness Degradation.Study type of foundation (gravity type foundation, single pile and suction type barrel base etc.) and size, cyclic load type (unidirectional, biaxial loadings), loaded the impacts of factor on the problems referred to above such as amplitude, loading frequency and cycle index.And for can guarantee the normal operation in cabin, top and impeller position lower to the maximum permission of basic accumulated deformation (as pile crown cumulative maximum corner distortion 0.5 is spent), the design criteria that to have proposed to take Deformation control be target.
The design service life of offshore wind turbine is 25～30 years, will experience during this period about 10
8the effect of inferior top cyclic load.At present, the fatigue limit state with regard to blower fan structure under Long-term Cyclic Loading effect (FLS) research, also lacks the support of the long-term field data in corresponding scene.According to existing field monitoring data, show, the blower fan structure of Dutch Lely wind energy turbine set is after moving half a year, and the natural frequency of vibration of structure has increased to 0.63Hz by the 0.41Hz of design load.Total institute is known, and the variation of natural frequency of structures certainly will cause serious potential safety hazard to it.But the current impact of the stiffness variation under Long-term Cyclic Loading effect on superstructure kinematic behavior (as natural frequency of structures) development law with regard to foundation structure, also lacks corresponding research both at home and abroad.Especially set up the coupled system that superstructure-basis-soil is integrated, the dynamic interaction between research each minor structure of this internal system under cyclic load is currently to greatly develop an arduous engineering roadblock urgently to be resolved hurrily under the overall background of offshore wind turbine.Refer to document <
bhattacharya S., Adhikari S., 2011.Experimental validation of soil-structure interaction of offshore wind turbines. Soil Dynamics and Earthquake Engineering 31,805-816.> and document <
lombardi D., Bhattacharya S., Wood D. M., 2013. Dynamic soil-structure interaction of monopile supported wind turbines in cohesive soil. Soil Dynamics and Earthquake Engineering 49,165-180.>.
As the Short-Term Monitoring data of above-mentioned Dutch Lely wind energy turbine set are reported, the stiffness variation by basis under Long-term Cyclic Loading effect and cause the variation of the superstructure natural frequency of vibration.This variation may will make the structural design frequency of former safety fall within the scope of the frequency band of a certain extraneous exciting force and become no longer safe.How to take certain engineering measure to reduce to greatest extent the potential safety hazard that structure brings because the natural frequency of vibration changes or the impact of taking what kind of method for designing to reduce this negative effect when structural design will be the huge challenge that slip-stick artist faces.Than on-the-spot prototype test and centrifuge test, the plurality of advantages such as 1g small scaled model test has low cost, saves time, simple and direct-viewing operation, can disclose certain physics law to a certain extent.The base_structure types disclosing according to 1g model test and physical dimension, cyclic load load the affect rules of factor on blower fan structure kinematic behavior such as proterties (amplitude, frequency and number of times), can be for the design of blower fan structure from now on provides certain guidance, this work has very important scientific research meaning and engineering using value.
Summary of the invention
The research that technical problem to be solved in the utility model is to provide a kind of dynamic interaction for offshore wind turbine superstructure-basis-soil provides a whole set of model test platform.
For this reason, the utility model is by the following technical solutions: it comprises the ingredient of foundation and three covers assembling when different, described foundation comprises the cuboid test flume that simulation silt sea bed ground is set, described silt sea bed ground top middle portion is provided with suction type barrel base, experimental tank surrounding exceeds silt sea bed ground, and described suction type barrel base inside and outside wall is pasted some microporous permeable thin slices.Here blower fan structure foundation selected from now on both at home and abroad the most potential suction type barrel base model in marine wind electric field, while having from now on research to need, can be on the utility model device basic, change basic model other foundation structure models such as into single pile, three.
First set ingredient comprises axial oil pressure installation system, the first pulley blocks, add loads and be arranged on obliquity sensor and the outside surface horizontal load bar with holes of suction type barrel base end face, described axial oil pressure installation system comprises the frame part being connected with test flume top, axial oil pressure installation system panel, the universal joint perpendicular to suction type barrel base end face that the first power sensor of oil hydraulic cylinder and oil hydraulic cylinder below and the first power sensor below connect, flexible cable one end of described the first pulley blocks is connected to suction type barrel base end face, the other end is connected with and adds loads, in flexible cable, be provided with the second power sensor,
The second cover ingredient comprises the axial oil pressure installation system identical from first set ingredient, add loads, be arranged on the obliquity sensor of suction type barrel base end face and outside surface horizontal load bar with holes and second pulley blocks different with first set ingredient and be connected to the displacement transducer on horizontal load bar, flexible cable one end of described the second pulley blocks is connected on horizontal load bar, the other end is connected with and adds loads, is provided with the second power sensor in flexible cable;
The 3rd cover ingredient comprises the offshore wind turbine model that is connected to suction type barrel base top, described offshore wind turbine model comprises that the top that is arranged on suction type barrel base top center is with the steel pipe of lumped mass piece and several acceleration transducers of installing on steel pipe and mass, in addition, the 3rd cover ingredient is also provided with the support adjacent with test flume, is placed on 700N high energy activator and concrete block on support, 700N high energy activator is connected with steel pipe perpendicular rigid by connecting link, and is connected with CYCLIC LOADING control box; Described acceleration transducer is respectively arranged one along exciting force direction with perpendicular to exciting force direction on mass, at the connecting portion of connecting link and steel pipe, along exciting force direction, has arranged one, on described connecting link, is provided with pull pressure sensor.
Adopting on the basis of above technical scheme, the utility model can also adopt following further scheme:
Test flume bottom is the thick unwatering system of 30cm being comprised of PVC drainpipe, gravel, woven wire and non-woven geotextile, is used for accelerating the discharging consolidation of the soil body in groove.
Described test flume is of a size of: 3m * 1.2m * 1.5m(length * wide * height), by seamless steel plate, processed, preservative treatment has been passed through on surface.
The external diameter of suction type barrel base is 26.6cm, and its length-diameter ratio is 0.5-1.0.
In suction type barrel base, some pore water pressure sensors have been arranged in outside.
Owing to having adopted the technical solution of the utility model, the utility model has designed the model test platform of a set of simulation offshore wind turbine superstructure-basis-native dynamic interaction, the ingredient of assembling when it has comprised foundation and three cover differences, in experimental tank, be provided with after simulation silt sea bed ground, by first set ingredient and the second cover ingredient test the data obtained, carry out the test after the 3rd cover ingredient is installed, can obtain soil rigidity and superstructure kinematic behavior (natural frequency of vibration) evolution of blower fan structure under the cyclic load of certain characteristic, and study accordingly suction type barrel base physical dimension, cyclic load loading characteristic (amplitude, frequency, number of times) etc. factor affects rule to it.By the resulting conclusion of the utility model test platform, the theoretical research that can effectively fill up to a certain extent both at home and abroad is in this respect blank, and provides certain directive function to offshore wind turbine structural design from now on.
Accompanying drawing explanation
Fig. 1 is the eccentric loading device schematic diagram that the utility model is controlled in the power of Fundamentals of Measurement rotational stiffness.
Fig. 2 is the horizontal loading apparatus schematic diagram that the power of the utility model coupling effect between Fundamentals of Measurement horizontal rigidity and horizontal rigidity and rotational stiffness is controlled.
Fig. 3 is the schematic diagram that suction type barrel base length-diameter ratio described in the utility model is 0.5.
Fig. 4 is the schematic diagram that suction type barrel base length-diameter ratio described in the utility model is 0.75.
Fig. 5 is the schematic diagram that suction type barrel base length-diameter ratio described in the utility model is 1.
Fig. 6 is that the utility model is being measured natural frequency of structures and cyclic load charger schematic diagram.
Embodiment
Referring to figs. 1 through Fig. 6, the ingredient of assembling when the utility model comprises foundation and three cover differences, described foundation comprises the cuboid test flume 4 that simulation silt sea bed ground is set, described silt sea bed ground top middle portion is provided with suction type barrel base 7, experimental tank 4 surroundings exceed silt sea bed ground, and described suction type barrel base inside and outside wall is pasted some microporous permeable thin slices 8.
The silt sea bed ground arranging in test flume has represented that China's southeastern coast offshore 10km scope inherence is built or the typical foundation condition of potential wind energy turbine set; Described test flume is of a size of: 3m * 1.2m * 1.5m(length * wide * height), by seamless steel plate, processed, preservative treatment has been passed through on surface.The test flume bottom thick unwatering system of 30cm for being comprised of PVC drainpipe, gravel, woven wire and non-woven geotextile, is used for the discharging consolidation of the soil body in accelerated test groove.Silt sea bed ground is prepared by mud sedimentation in test flume, and is allowed to condition under Gravitative Loads consolidation settlement 1 month, and the final powder soil horizon thickness forming is 80cm.
Suction type barrel base 7 is domestic and international the most potential suction type barrel base model in marine wind electric field from now on, forms wall thickness 3mm with seamless stainless steel materials processing.For the impact on structural entity kinematic behavior of the basis of studying different length-diameter ratios (skirt high with basic diameter ratio), here selected the suction bucket model of three different guides, length-diameter ratio can be 0.5-1.0, as shown in Fig. 3, Fig. 4, Fig. 5, what represent respectively is that length-diameter ratio is 0.5,0.75, and 1 suction type barrel base 701,702,703, but its external diameter is 26.6cm.
Referring to figs. 1 through Fig. 6, Fig. 1 is first set ingredient, and Fig. 2 is the second cover ingredient, and Fig. 6 is the 3rd cover ingredient.
First set ingredient comprises axial oil pressure installation system 1, the first pulley blocks 101, add loads 3 and be arranged on obliquity sensor 9 and the outside surface horizontal load bar 13 with holes of suction type barrel base 7 end faces, described axial oil pressure installation system 1 comprises the frame part being connected with test flume 4 tops, axial oil pressure installation system panel 15, the universal joint 17 perpendicular to suction type barrel base 7 end faces that the first power sensor 11 of oil hydraulic cylinder 16 and oil hydraulic cylinder 16 belows and the first power sensor 11 belows connect, flexible cable 105 one end of described the first pulley blocks 101 are connected to suction type barrel base 7 end faces, the other end is connected with and adds loads 3, in flexible cable, be provided with the second power sensor 10.
The second cover ingredient comprises the axial oil pressure installation system 1 identical with first set ingredient, add loads 3, be arranged on the obliquity sensor 9 of the suction type barrel base 7 end faces horizontal load bar 13 with holes with outside surface and second pulley blocks 102 different from first set ingredient and be connected to the displacement transducer 14 on horizontal load bar, flexible cable 105 one end of described the second pulley blocks 102 are connected on horizontal load bar 13, the other end is connected with and adds loads 3, in flexible cable 105, be provided with the second power sensor 10, flexible cable 105 in the second cover ingredient and the second power sensor 10 are identical with first set ingredient,
The 3rd cover ingredient comprises the offshore wind turbine model that is connected to suction type barrel base top, described offshore wind turbine model comprises that the top that is arranged on suction type barrel base top center is with the steel pipe 16 of lumped mass piece 15 and several acceleration transducers 17 of installing on steel pipe 16 and mass 15, in addition, the 3rd cover ingredient is also provided with the support 22 adjacent with test flume 4, be placed on 700N high energy activator 19 on support 22 and concrete block 21(mainly for fixing 700N high energy activator), 700N high energy activator 19 is connected with steel pipe 16 perpendicular rigid by connecting link 18, and be connected with CYCLIC LOADING control box 20, described acceleration transducer 17 is respectively arranged one along exciting force direction with perpendicular to exciting force direction on mass 15, at connecting link 18 and the connecting portion of steel pipe 16, along exciting force direction, has arranged one.By giving 20 input of CYCLIC LOADING control box certain control signal, vibrator 19 can be exported the sine excitation force signal of certain amplitude and frequency, and is applied on offshore wind turbine model by rigid connecting rod 18.On connecting link 18, be provided with pull pressure sensor 23.Steel pipe 16 used in model also can be referred to as the pylon of offshore wind turbine, and it is long 1m in fact, external diameter 3.8cm, the steel pipe of wall thickness 3mm.The lumped mass piece 15 that steel pipe 16 tops apply represents the quality of the parts such as cabin, blade and impeller of actual offshore wind turbine, is heavily 2.0kg.On described connecting link 18, be provided with pull pressure sensor 23.
The measured data of described test platform is by following five class sensors and obtain by corresponding signal amplifier and data acquisition system (DAS).Above-mentioned displacement transducer (LVDT) 14, the pulling force sensor 10 in obliquity sensor 9 and flexible cable 105, the pulling force size that is respectively used to measure horizontal displacement of foundation, corner displacement and applies; Pull pressure sensor 23 on rigid connecting rod 18 is for measuring the exciting force signal of output; The pore water pressure sensor 8 that diverse location place, the interior outside of suction bucket 7 is arranged, accumulation and dissipation situation for the pore water pressure that records suction bucket model 7 surrounding soils under the cyclic load of top, and set up accordingly with soil rigidity variation between relation; The acceleration transducer 17 that rigid connecting rod 18 and pylon 16 junctions and top are arranged, is mainly used in measurement model at the acceleration signal in free vibration stage, and these data can obtain the natural frequency of vibration of structure through fast Fourier transform (FFT).
Offshore wind turbine superstructure-the basis being provided by the utility model patent-native dynamic interaction model test platform can carry out the operation of correlation test according to the following steps:
1) test flume 4 bottom discharge systems 5 are set, and arrange silt sea bed ground 6.First, in test flume 4 bottoms, lay the PVC drainpipe of 5cm external diameter, on drainpipe, be reserved with aperture; Repave the gravel that last layer mean grain size is 2～3cm, gravel bed top adds one deck nonweaven geotextile and prevents that fine earth particle from being taken away by wandering water; Finally, for preventing the movement of geotextile, can add on its surface layer of steel wire net, finally like this form the bottom discharge system 5 that a thickness is approximately 30cm.The uniform xeraphium soil sample of preparation is added to water and stir into mud, water percentage is roughly controlled at 95%～100%, by mud pour into test flume 4 carry out fixed, soil sample under its Gravitative Loads after nearly one-month period consolidation settlement formed silt sea bed ground 6 thickness be approximately 80cm.
2) at the sticky note microporous permeable thin slice 8 in the suction type barrel base 7 inside and outside wall differing heights places of top closure, bottom opening, and be connected with pore water pressure sensor (PPT) by PVC tubule, before test, PVC tubule carried out to draining saturated.Before test, check that whether various kinds of sensors and signal amplifier and data acquisition system (DAS) be normal simultaneously.
3) by the axial oil pressure installation system 1 on test flume, suction type barrel base 7 is in place, and connects eccentric loading device.The situation of change of suction type barrel base 7 surrounding soil Pore Pressures in observed data acquisition system, after pore pressure dissipation is basicly stable to a certain extent, the installation that shows suction type barrel base 7 is eliminated substantially to the disturbance of surrounding soil, now can carry out test below.
4) by the test platform shown in Fig. 1, suction type barrel base 7 is applied the vertical bias-load effect of different load levels, and suction type barrel base 7 tops when recording every grade of load action and be issued to steady state (SS) by obliquity sensor 9 produce corner displacement, the moment of flexure size that obtains acting on base center by eccentric throw and load product, can obtain basic initial rotation rigidity (coupling effect of ignoring vertical rigidity and rotational stiffness) in conjunction with top corners displacement data.Wherein, the load of different sizes at different levels obtains by the pulling force sensor 10 of arranging in flexible cable 105.
5) horizontal load bar 13 with holes is connected to suction type barrel base 7 tops, and on certain altitude, suction type barrel base is applied to horizontal loading by axial oil pressure installation system 1.By different stage level loading effect, reach initial level rigidity that displacement transducer 14 under steady state (SS) and obliquity sensor 9 recorded data can obtain suction type barrel base and the coupling effect between level and rotational stiffness.
6) remove the horizontal load bar 13 at suction type barrel base 7 tops and the axial oil pressure installation system 1 on test flume, and the steel pipe 16 with top lumped mass piece 15 is bolted to basic top center.As shown in Figure 6, model structure top is applied to a displacement by a small margin, make its free vibration, and gather the time dependent signal of corresponding acceleration with the acceleration transducer 17 that is arranged in diverse location place on model, through data analysis, can obtain the initial natural frequency of vibration of structure.Position and the mode of the acceleration transducer 17 in this step are: at model top, along exciting force direction with perpendicular to exciting force direction, respectively arrange one, at connecting link 18 and the connecting portion of steel pipe pylon 16, along exciting force direction, arrange the 3rd.
7) vibrator 19 is connected with steel pipe 16 by connecting link 18, and gives 20 input of CYCLIC LOADING control box certain control signal parameter, make the sine excitation power of vibrator 19 outputs a certain size and frequency, and act in offshore wind turbine model structure.(N after the CYCLIC LOADING of certain hour
1inferior), disconnect the connecting link 18 between vibrator 19 and steel pipe 16, with class of operation in step 6) seemingly, make its free vibration to micro-displacement of tower top, and N is now passed through in measurement
1the natural frequency of vibration of structure after inferior CYCLIC LOADING.Then, by step 4) and 5) method of operating, measure now rotational stiffness, horizontal rigidity and the coupling effect between the two on basis.
8) again connect CYCLIC LOADING device, (N after another CYCLIC LOADING number of times
2inferior), then disconnect being connected between steel pipe 16 and vibrator 19, successively by above-mentioned steps 6), 4) and 5) carry out test operation, can obtain respectively structure through (N
1+ N
2) natural frequency of vibration of structure after inferior CYCLIC LOADING, and suction type barrel base 7 stiffness parameters now.Repeat above operation steps, until total CYCLIC LOADING number of times reaches 10
7～10
8magnitude stops test, cleaning instrument repairing experiment data.Regulate CYCLIC LOADING control box input control signal, in the interior another location of test flume 4, (with last testing position at a distance of more than 2 times of suction type barrel base 7 diameters) carries out lower battery of tests.
The method of testing by 1g small scaled model, first applies bias and level loading effect to suction type barrel base 7, obtains initial rotation rigidity, horizontal rigidity and the rotational stiffness of suction type barrel base 7 and the coupling effect between horizontal rigidity.Due at present, on conventionally ignoring the impact in natural frequency of structures is predicted of horizontal rigidity and rotational stiffness coupling effect in actual offshore wind turbine structural research, and often can not obtain more accurate result.By the utility model test platform, can obtain the coupling effect between rotational stiffness and horizontal rigidity, in offshore wind turbine natural frequency of vibration prediction from now on, be expected to obtain more accurate result.Then, offshore wind turbine structure is being applied before the cyclic load of certain amplitude and frequency, measure its initial natural frequency of vibration, and study its kinematic behavior (natural frequency of structures) with suction type barrel base 7 physical dimensions, and the Changing Pattern of the factor such as the feature of the cyclic load applying (amplitude, frequency and number of times).The similarity guide relation of the nondimensionalization between that follow in the basic law disclosing by test platform described in the utility model test and whole physical process and prototype structure, can obtain the similar physics law process that actual prototype blower fan structure reflects, for the theory of offshore wind turbine structural dynamic characteristic aspect and numerical value research provide reliable physical model basis, and blower fan structure design is from now on proposed to certain guidance instruction.
Claims (5)
1. novel offshore wind turbine superstructure-basis-native dynamic interaction model test platform, the ingredient that it is characterized in that assembling when it comprises foundation and three cover differences, described foundation comprises the cuboid test flume that simulation silt sea bed ground is set, described silt sea bed ground top middle portion is provided with suction type barrel base, experimental tank surrounding exceeds silt sea bed ground, described suction type barrel base inside and outside wall is pasted some microporous permeable thin slices
First set ingredient comprises axial oil pressure installation system, the first pulley blocks, add loads and be arranged on obliquity sensor and the outside surface horizontal load bar with holes of suction type barrel base end face, described axial oil pressure installation system comprises the frame part being connected with test flume top, axial oil pressure installation system panel, oil hydraulic cylinder, the universal joint perpendicular to suction type barrel base end face that the first power sensor of oil hydraulic cylinder below and the first power sensor below connect, flexible cable one end of described the first pulley blocks is connected to suction type barrel base end face, the other end is connected with and adds loads, in flexible cable, be provided with the second power sensor,
The second cover ingredient comprises the axial oil pressure installation system identical from first set ingredient, add loads, be arranged on the obliquity sensor of suction type barrel base end face and outside surface horizontal load bar with holes and second pulley blocks different with first set ingredient and be connected to the displacement transducer on horizontal load bar, flexible cable one end of described the second pulley blocks is connected on horizontal load bar, the other end is connected with and adds loads, is provided with the second power sensor in flexible cable;
The 3rd cover ingredient comprises the offshore wind turbine model that is connected to suction type barrel base top, described offshore wind turbine model comprises that the top that is arranged on suction type barrel base top center is with the steel pipe of lumped mass piece and several acceleration transducers of installing on steel pipe and mass, in addition, the 3rd cover ingredient is also provided with the support adjacent with test flume, is placed on 700N high energy activator and concrete block on support, 700N high energy activator is connected with steel pipe perpendicular rigid by connecting link, and is connected with CYCLIC LOADING control box; Described acceleration transducer is respectively arranged one along exciting force direction with perpendicular to exciting force direction on mass, at the connecting portion of connecting link and steel pipe, along exciting force direction, has arranged one, on described connecting link, is provided with pull pressure sensor.
2. novel offshore wind turbine as claimed in claim 1 superstructure-basis-native dynamic interaction model test platform, it is characterized in that the 30cm thick unwatering system of test flume bottom for being formed by PVC drainpipe, gravel, woven wire and non-woven geotextile, be used for accelerating the discharging consolidation of the soil body in groove.
3. novel offshore wind turbine as claimed in claim 1 superstructure-basis-native dynamic interaction model test platform, it is characterized in that described test flume is of a size of: 3m * 1.2m * 1.5m(length * wide * height), by seamless steel plate, processed, preservative treatment has been passed through on surface.
4. novel offshore wind turbine as claimed in claim 1 superstructure-basis-native dynamic interaction model test platform, is characterized in that the external diameter of suction type barrel base is 26.6cm, and its length-diameter ratio is 0.5-1.0.
5. novel offshore wind turbine as claimed in claim 1 superstructure-basis-native dynamic interaction model test platform, is characterized in that in suction type barrel base, some pore water pressure sensors have been arranged in outside.
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| CN201320408576.2U CN203455243U (en) | 2013-07-06 | 2013-07-06 | Novel model testing platform for superstructure-foundation-soil power interaction of offshore wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398910A (en) * | 2013-07-06 | 2013-11-20 | 浙江大学 | Novel model testing platform for interaction of offshore wind turbine upper structure-foundation-soil power |
| CN104155190A (en) * | 2014-08-08 | 2014-11-19 | 同济大学 | Test system for simulation of long-term cyclic loading effect |
| CN106498987A (en) * | 2016-10-21 | 2017-03-15 | 东南大学 | A kind of field dynamic test device for characterizing shallow foundation dynamic trait |
| CN107525727A (en) * | 2017-10-12 | 2017-12-29 | 中国海洋大学 | A kind of Blade fence, which moves in circles, acts on load testing machine and method |
| CN116255309A (en) * | 2023-02-27 | 2023-06-13 | 湖南城市学院设计研究院有限公司 | Indoor testing device of wind turbine |
| GB2588098B (en) * | 2019-10-04 | 2024-04-24 | Niba Solutions Ltd | Flexibility assessment |
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2013
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398910A (en) * | 2013-07-06 | 2013-11-20 | 浙江大学 | Novel model testing platform for interaction of offshore wind turbine upper structure-foundation-soil power |
| CN103398910B (en) * | 2013-07-06 | 2015-09-02 | 浙江大学 | Novel offshore wind turbine superstructure-basis-native dynamic interaction model test platform |
| CN104155190A (en) * | 2014-08-08 | 2014-11-19 | 同济大学 | Test system for simulation of long-term cyclic loading effect |
| CN106498987A (en) * | 2016-10-21 | 2017-03-15 | 东南大学 | A kind of field dynamic test device for characterizing shallow foundation dynamic trait |
| CN106498987B (en) * | 2016-10-21 | 2018-06-19 | 东南大学 | A kind of field dynamic test device for characterizing shallow foundation dynamic characteristics |
| CN107525727A (en) * | 2017-10-12 | 2017-12-29 | 中国海洋大学 | A kind of Blade fence, which moves in circles, acts on load testing machine and method |
| GB2588098B (en) * | 2019-10-04 | 2024-04-24 | Niba Solutions Ltd | Flexibility assessment |
| CN116255309A (en) * | 2023-02-27 | 2023-06-13 | 湖南城市学院设计研究院有限公司 | Indoor testing device of wind turbine |
| CN116255309B (en) * | 2023-02-27 | 2023-10-03 | 湖南城市学院设计研究院有限公司 | Indoor testing device of wind turbine |
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