CN207499004U - Offshore wind farm single-pile foundation stake monitoring device - Google Patents
Offshore wind farm single-pile foundation stake monitoring device Download PDFInfo
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- CN207499004U CN207499004U CN201721150087.6U CN201721150087U CN207499004U CN 207499004 U CN207499004 U CN 207499004U CN 201721150087 U CN201721150087 U CN 201721150087U CN 207499004 U CN207499004 U CN 207499004U
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Abstract
The utility model discloses a kind of offshore wind farm single-pile foundation stake monitoring device, including single pile, set on the monitoring device of the single pile, the monitoring device includes：Data acquisition device, for acquiring monitoring data and being transmitted to land server；Dynamic inclination instrument, at the top of the stake top and wind turbine of the single pile；Vibration acceleration instrument, the pile body inner wall at the top of the single pile；Inclinator, multiple inclinators are arranged in along prevailing wind direction on the inside of the tower or pile foundation of different elevations；Earth pressure gauge and osmometer are mounted on the single pile outer wall in a manner of matching at the different elevations in mud face along prevailing wind direction direction.The potential faults monitoring such as the device is tilted by stress-strain characteristics, stake soil Zhou Kangli and the pore water pressure to steel pipe pile foundation and jacket steel acceleration, tower, bending deformation and fracture, foundation uneven settlement, corrosion of steel structure, and the energy automatic early-warning when there is above-mentioned hidden danger, so as to provide reliable technical support for safe operation.
Description
Technical field
The utility model is related to offshore wind power foundation stake technical field, the monitoring of particularly offshore wind farm single-pile foundation stake fills
It puts.
Background technology
The large diameter single pile foundation widely used wind power foundation form emerging as China's Coastal Areas, especially builds up
The wind field used cans be counted on one's fingers, large diameter single pile foundation work load effect under working property, stress deformation characteristic and
It to be referred to major issues, current not a large amount of specific and effective monitoring data such as the interactions of surrounding soil.
In this regard, both at home and abroad commonly using p-y curve methods, deformation of pile foundation of this method under analysis static load effect is asked
In terms of topic, it coincide very well with measured result, but differ larger with measured result in terms of dynamic load, often seriously underestimates stake
The lateral deformation of base；Secondly, the horizontal direction bearing capacity of single-pile foundation is usually using stake top horizontal displacement as control condition, and mesh
The preceding horizontal displacement for generally calculating pile foundation using p-y curve methods as defined in API specification in ocean engineering, but the p-y in specification
Curve is that the testing data based on the following minor diameter flexible piles of diameter 2m obtains, and is had for the applicability of large diameter steel pipe pile
It is to be studied；Again, above-mentioned cycle p-y curves only describe the working property of stake from experimental phenomena, and are not introduced into cycle lotus
The mechanical behavior of lower clay is carried, is further improved；It is again secondary, previous research Xiao Zhou's number (10~20 times) horizontal cyclic lotus mostly
Cyclic load-displacement curve of lower single pile foundation is carried, for offshore wind farm pile foundation, even more important is then that larger all numbers are long
The cycle weakening characteristic of pile foundation under phase cyclic load.
Utility model content
The purpose of this utility model is to provide a kind of offshore wind farm single-pile foundation stake monitoring device.The device passes through to steel pipe
Stress-strain characteristics, stake soil Zhou Kangli and the pore water pressure and jacket steel acceleration of pile foundation, tower tilt, buckling becomes
The potential faults such as shape and fracture, foundation uneven settlement, corrosion of steel structure monitor, and can be automatically pre- when there is above-mentioned hidden danger
It is alert, so as to provide reliable technical support for safe operation.
To achieve the above object, offshore wind farm single-pile foundation stake monitoring device provided by the utility model, including single pile, sets
In the monitoring device of the single pile, the monitoring device includes：
Data acquisition device, for acquiring monitoring data and being transmitted to land server；
Dynamic inclination instrument, at the top of the stake top and wind turbine of the single pile, to monitor the dynamic inclination of the single pile；
Vibration acceleration instrument, the pile body inner wall at the top of the single pile, to monitor the vibration acceleration of the single pile；
Inclinator, the basic inner platform of the single pile have been evenly arranged multiple geometrical standard points, multiple inclinator edges
Prevailing wind direction is arranged on the inside of the tower or pile foundation of different elevations, to measure the inclination angle of tower, pile foundation under the action of the wind；
Earth pressure gauge and osmometer are mounted on the single pile outer wall in a manner of matching apart from mud face along prevailing wind direction direction
Different elevations at, to monitor under fan loads effect Pile side soil body to the dynamic response of single-pile foundation；
The dynamic inclination instrument, vibration acceleration instrument, inclinator, earth pressure gauge and osmometer are all connected to the data and adopt
Acquisition means.
Preferably, the earth pressure gauge is installed on by protective device on the outside of the pile lining of the single pile sinking section, described anti-
Protection unit includes support base and lower cone body；The support base is fixedly connected with the single pile sinking section, the earth pressure gauge
It is installed in the lateral openings of the support base；The earth pressure gauge is located inside the support base, and stress surface is parallel to institute
State the pile lining of single pile sinking section and perpendicular to lower support platform；The lower cone body is set on the bottom of the support base,
Cone angle is downwardly directed along the longitudinal direction.
Preferably, the protective device further comprises upper cone body, and the upper cone body is set on the support base
Top, cone angle points up along the longitudinal direction.
Preferably, the support base is in the sleeve-shaped of lateral arrangement, outside the pile lining of one end and the single pile sinking section
Surface is fixedly connected, and the lateral openings for installing the earth pressure gauge are formed on the other end.
Preferably, the osmometer is installed on by protective device on the outside of the pile lining of the single pile sinking section, the protection
Device includes protective case and lower cone body；Osmometer chamber is equipped on the inner wall of the protective case at different elevations, it is each described
Osmometer is respectively arranged on corresponding osmometer chamber；Permeable hole, the prison of the osmometer are offered on the side wall of the osmometer chamber
Survey line cable is drawn upwards.
Preferably, there is gap to form passing channel, each institute between each osmometer chamber and the outer wall of the single pile
The monitoring cable for stating osmometer both passes through the passing channel above it and is introduced after summarizing inside the single pile, then from described
It is drawn upwards inside single pile.
Preferably, the osmometer chamber is internally provided with fine sand layer and plugged zone, after the osmometer is wrapped up by geotextiles
It is embedded in the fine sand layer.
Preferably, the protective case is equipped with to be sealed in the later stage in the position corresponding to each osmometer top of chamber
Stifled laterally reserved installing port.
Preferably, the inside of the single pile is disposed with inclinometer pipe along prevailing wind direction, and institute is monitored in a manner of by artificial observation
State the degree of disturbing of single pile.
Preferably, the single pile is disposed with corrosion potential measuring point at the elevation of extreme low tide ± 5m.
Monitoring device provided by the utility model is at the top of blower fan tower barrel, single-pile foundation and single-pile foundation pile body inner wall etc.
Key position arranges suitable monitoring device, and being mainly used for working property of the monitoring wind turbine during normal use ensures wind turbine
Safe operation.Such as monitor the inclination angle of tower, foundation structure under the action of the wind, the pile body amount of deflection of steel-pipe pile, pile body steel pipe
Stress variation situation, observation single-pile foundation deformation characteristic in use, the vibration acceleration for monitoring wind turbine each point, so as to
Calculate wind turbine body vibration frequency, meanwhile, earth pressure gauge and osmometer are disposed with, and right at the pile peripheral earth of prevailing wind direction surface layer
Stress meter is disposed at the pile lining answered, Stress property monitoring and the pile peripheral earth of the single-pile foundation during fan safe is run can be monitored
Stress-strain characteristics, actual measurement obtains pile body deformation and bending and soil pressure against piles and pore water pressure, discloses horizontal direction
Pile-soil interaction rule and pile foundation level displacement and the bending rule of development under cyclic load.
In a kind of preferred embodiment, earth pressure gauge is mounted on by support base on the outside of the pile lining of single pile sinking section, makes soil
Pressure gauge is integrally located at the inside of support base, and only stress surface can effectively be contacted by the lateral openings of support base with the external soil body,
Meanwhile lower cone body is equipped in the bottom of support base, and the cone angle of lower cone body is downwardly directed.
In this way, since earth pressure gauge is located inside support base, support base can effectively protect earth pressure gauge avoids earth pressure gauge
It is damaged during piling, sinking and use, lower taper physical efficiency reduces pile sinking soil resistance, reduces to outer wall local crowning
The impact force of protective device, moreover, lower taper body enables to the destruction that single pile is washed open in sinking watching by protective device
The soil body is capable of the stress surface of quickly stuffing, closely encirclement earth pressure gauge, so as to ensure Monitoring Performance and precision, to be big straight
Design, design optimization and the monitoring data for using offer important of diameter single-pile foundation.
Description of the drawings
Fig. 1 is provided the electrical schematic diagram of offshore wind farm single-pile foundation stake monitoring device by the utility model；
Fig. 2 is a kind of mounting structure schematic diagram of earth pressure gauge；
Fig. 3 is the similar alternative arrangements schematic diagram of earth pressure gauge；
Fig. 4 is the mounting structure schematic diagram of bottom section osmometer；
Fig. 5 is the mounting structure schematic diagram of stage casing osmometer；
Fig. 6 is the mounting structure schematic diagram of epimere osmometer.
In figure：
1. 2. earth pressure gauge 21. of single pile monitoring cable 3,3 ' protective devices, 31. support base 32,32 ' lower tapers
33. upper cone body 34 of body, 34 ' protective cases, 4. rubber seal, 5. osmometer, 6. osmometer chamber, 7. permeable hole 8. are thin
9. plugged zone of sand bed, 10. geotextiles 11. reserve 12. strain gauge of installing port
Specific embodiment
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
Herein, the terms such as " upper and lower, inside and outside " are the establishments based on position relationship shown in the drawings, with reference to the accompanying drawings
The difference in shown product orientation, corresponding direction and position relationship are also possible to change therewith, therefore, can not be managed
It solves as the absolute limit to protection domain.Moreover, the relational terms of such as " first " and " second " or the like are used merely to one
It is a to be distinguished with another component with same names, without necessarily requiring or implying there are any between these components
This practical relationship or sequence.
It please refers to Fig.1, Fig. 1 is provided the electrical principle of offshore wind farm single-pile foundation stake monitoring device by the utility model
Figure.
As shown in the figure, in a kind of specific embodiment, offshore wind farm single-pile foundation stake monitoring provided by the utility model
Device, including single pile, set on the monitoring device of the single pile, the monitoring device include data acquisition device, dynamic inclination instrument,
Vibration acceleration instrument, inclinator and earth pressure gauge and osmometer, dynamic inclination instrument, vibration acceleration instrument, inclinator, soil pressure
Meter is all connected to data acquisition device with osmometer, by data acquisition device, realizes the automation collection of data and is transmitted to
Land server, same wind turbine, offshore boosting station each data acquisition device bus is taken to connect, and be ultimately connected to wind turbine,
Formation swings the projects such as displacement, concentricity, foundation uneven settlement amount in real time to vibration acceleration, tower verticality, tower
Real time monitoring, early warning.
Specifically, at the top of the stake top of single pile and wind turbine (may be selected basic inner platform slightly on pile body inner wall on), respectively
The two-way dynamic inclination instrument of arrangement one (horizontal X, Y-direction, mutually in 90 °) is to monitor the dynamic inclination of single pile, by monitoring single pile
Dynamic inclination extrapolates the variation of single pile stiffness and opposite differential settlement.
Pile body inner wall (inner platform position slightly on) one vibration acceleration instrument of arrangement, monitors wind turbine base at the top of the blower foundation
The vibration acceleration situation of plinth.
Four geometrical standard points are evenly arranged in the basic inner platform of every single pile to monitor the differential settlement on basis,
60m elevations, 30m elevations, 11m elevations and 2m elevations tower or pile foundation on the inside of an inclinator is respectively arranged along prevailing wind direction, survey
Tower, the inclination angle of foundation structure under the action of the wind are measured, calculates that the change place value of structure and basis are uneven according to the inclination angle of measurement
Even sedimentation situation.Further, it is also possible to arrange two inclinometer pipes along prevailing wind direction on the inside of single pile, monitored by the way of artificial observation
The degree of disturbing of single pile.
Pairing is installed apart from mud face 1m, 4m, 9m and 13m, different elevations on the stake side outer wall in single pile prevailing wind direction direction
Earth pressure gauge and osmometer (i.e. pore pressure gauge), to monitor in the case where fan loads act on Pile side soil body to single-pile foundation
Dynamic response, monitoring result can be compared with the pile peripheral earth drag of FEM calculation.
In order to carry out the monitoring of the corrosion potential of cathode protection system, a corrosion potential measuring point can be arranged in blower foundation,
Specifically single pile is may be arranged at the elevation of extreme low tide ± 5m.
It please refers to Fig.2, Fig. 2 is a kind of mounting structure schematic diagram of earth pressure gauge；
As shown in the figure, earth pressure gauge 2 is installed on by protective device 3 on the outside of the pile lining of 1 sinking section of single pile.It needs exist for
It is bright, since single pile 1 is relatively large in diameter, usually in 1m or so, in order to clearly illustrate the structure of protective device 3, only show in figure
The pile lining of 1 side of single pile is gone out, the pile lining of 1 opposite side of single pile is not shown.
The support base 31 of protective device 3 is in the pile lining appearance of the sleeve-shaped of lateral arrangement, one end and 1 sinking section of single pile
Face is fixedly connected, and the lateral openings for installing earth pressure gauge 2 is formed on the other end, for cross sectional shape, support base 31 was both
Can be the rectangular or oblong shaped cartridge of circular sleeve or rounded corner, it specifically can be according to the practical shape of earth pressure gauge 2
Shape flexible design as long as earth pressure gauge 2 can be stably installed, does not do specific restriction here.
Earth pressure gauge 2 is installed in the lateral openings of support base 31, stress surface be parallel to the pile lining of 1 sinking section of single pile and
Perpendicular to lower support platform, and hard material is filled in the gap that can be formed in support base 31 and earth pressure gauge 2, passed through
Filling hard material can not only provide stable support force to earth pressure gauge 2, can also adjust since pile lining curved surface is to soil pressure
The deviation that 2 vertical extent of power meter is brought, meanwhile, strain gauge 12 is also arranged at corresponding pile lining, to monitor the steel plate of single pile 1
Stress variation situation.
The lower cone body 32 of protective device 3 is fixed on the bottom of support base 31, and cone angle is downwardly directed along the longitudinal direction,
Lower cone body 32 is in half-cone, and top is fixedly connected with the bottom of support base 31, and side and the pile lining of 1 sinking section of single pile are consolidated
Fixed connection, and the shape at top and the shape of 31 bottom of support base reach unanimity, so that the two can be connected sleekly in transition, make
Protective device 3 has fairshaped outer surface on the whole, reduces penetration resistance.Certainly, lower cone body 32 can also be in complete
Taper, top are fixedly connected with the bottom of support base 31, can equally realize the utility model aim.
The upper cone body 33 of protective device 3 is fixed on the top of support base 31, and cone angle points up along the longitudinal direction,
Upper cone body 33 is in half-cone, and top is fixedly connected with the top of support base 31, and side and the pile lining of 1 sinking section of single pile are consolidated
Fixed connection, and the shape of bottom and the shape at 31 top of support base reach unanimity, so that the two can be connected sleekly in transition, make
Protective device 3 has fairshaped outer surface on the whole, so as to reduce penetration resistance.Certainly, upper cone body 33 can also
In full cone, bottom is fixedly connected with the top of support base 31, can equally realize the utility model aim.
The side that support base 31, lower cone body 32 and upper cone body 33 are in contact with single pile 1 has to sink with single pile 1
The consistent radian in pile lining outer surface of section, and with the combination of pile lining to be welded to connect.
The through-hole inside support base 31, the monitoring cable of earth pressure gauge 2 are offered on the pile lining of 1 sinking section of single pile
21 pass through through-hole to be drawn upwards from 1 inside of single pile, to connect superposed data acquisition device (not shown), through hole
It can be sealed with rubber seal 4, rubber seal 4 can not only be rubbed with monitoring for protection cable 21 with single pile 1, Er Qieke
To prevent water from flowing into inside single pile 1.Monitoring cable 21 is introduced inside pile body and is drawn upwards, facilitates the monitoring inside access pile body
Platform, and can hit or pull to avoid the unknown object on the outside of stake and cable is caused to destroy.
In the present embodiment, since earth pressure gauge 2 is located inside support base 31,31 can effectively protect soil pressure of support base
Power meter 2 avoids earth pressure gauge 2 from being damaged during piling, sinking and use, 32 energy of upper cone body 33 and lower cone body
Reduce pile sinking soil resistance, reduce the impact force of the protective device 3 to outer wall protrusion, moreover, upper cone body 33 and lower taper
Body 32 enables to the destruction soil body energy quickly stuffing that single pile 1 is washed open in sinking watching by protective device 3, closely surrounds soil
The stress surface of pressure gauge 2, so as to ensure Monitoring Performance and precision, so as to for large diameter single pile foundation design, design optimization with
And use the important monitoring data of offer.
It please refers to Fig.3, Fig. 3 is the similar alternative arrangements schematic diagram of earth pressure gauge.
As shown in the figure, in the present embodiment, earth pressure gauge 2 is installed on by protective device 3 outside the pile lining of 1 sinking section of single pile
Side.What needs to be explained here is that since single pile 1 is relatively large in diameter, usually in 1m or so, in order to clearly illustrate protective device 3
Structure merely illustrates the pile lining in 1 left side of single pile in figure, and the pile lining on 1 right side of single pile is not shown.
The support base 31 of protective device 3 is in the pile lining appearance of the sleeve-shaped of lateral arrangement, one end and 1 sinking section of single pile
Face is fixedly connected, and the lateral openings for installing earth pressure gauge 2 is formed on the other end, for cross sectional shape, support base 31 was both
Can be the rectangular or oblong shaped cartridge of circular sleeve or rounded corner, it specifically can be according to the practical shape of earth pressure gauge 2
Shape flexible design as long as earth pressure gauge 2 can be stably installed, does not do specific restriction here.
Earth pressure gauge 2 is installed in the lateral openings of support base 31, stress surface be parallel to the pile lining of 1 sinking section of single pile and
Perpendicular to lower support platform, and hard material is filled in the gap that can be formed in support base 31 and earth pressure gauge 2, passed through
Filling hard material can not only provide stable support force to earth pressure gauge 2, can also adjust since pile lining curved surface is to soil pressure
The deviation that 2 vertical extent of power meter is brought.
The lower cone body 32 of protective device 3 is fixed on the bottom of support base 31, and cone angle is downwardly directed along the longitudinal direction,
Lower cone body 32 is in half-cone, and top is fixedly connected with the bottom of support base 31, and side and the pile lining of 1 sinking section of single pile are consolidated
Fixed connection, and the shape at top and the shape of 31 bottom of support base reach unanimity, so that the two can be connected sleekly in transition, make
Protective device 3 has fairshaped outer surface on the whole, reduces penetration resistance.Certainly, lower cone body 32 can also be in complete
Taper, top are fixedly connected with the bottom of support base 31, can equally realize the utility model aim.
The side that support base 31 and lower cone body 32 are in contact with single pile 1 has the pile lining appearance with 1 sinking section of single pile
The consistent radian in face, and with the combination of pile lining to be welded to connect.
The top of support base 31 is equipped with the protective case 34 for being longitudinally extended and being fixedly connected with the pile lining outside of single pile 1, protects
The inside of sheath 34 forms passing channel；The top of support base 31 offers through-hole, and the monitoring cable 21 of earth pressure gauge 2, which passes through, to be led to
Hole is drawn upwards from passing channel, to connect superposed data acquisition equipment (not shown).Monitoring cable 21 is drawn
Enter passing channel to draw upwards, it is convenient to be connect with monitoring platform, and can hit or pull to avoid the unknown object on the outside of stake
Cable is caused to destroy.
In the present embodiment, since earth pressure gauge 2 is located inside support base 31,31 can effectively protect soil pressure of support base
Power meter 2 avoids earth pressure gauge 2 from being damaged during piling, sinking and use, and lower cone body 32 can reduce the resistance of pile sinking soil
Power reduces the impact force to outer wall male means, moreover, lower cone body 32 enables to single pile 1 in sinking watching by preventing
The destruction soil body energy quickly stuffing that protection unit 3 is washed open closely surrounds the stress surface of earth pressure gauge 2, so as to ensure Monitoring Performance
And precision, to provide important monitoring data for the design of large diameter single pile foundation, design optimization and use.
It please refers to Fig.4, Fig. 5, Fig. 6, Fig. 4 is the mounting structure schematic diagram of bottom section osmometer；Fig. 5 is the peace of stage casing osmometer
Assembling structure schematic diagram；Fig. 6 is the mounting structure schematic diagram of epimere osmometer.
As shown in the figure, osmometer 5 is installed on by protective device 3 ' on the outside of the pile lining of 1 sinking section of single pile, protective device 3 '
Including protective case 34 ' and lower cone body 32 '；Osmometer chamber 6 is equipped on the inner wall of protective case 34 ' at different elevations, is respectively oozed
Pressure meter 5 is respectively arranged on corresponding osmometer chamber 6, and permeable hole 7, the monitoring cable of osmometer 6 are offered on the side wall of osmometer 6
It draws upwards.
There is gap to form passing channel, the monitoring line of each osmometer 5 between each osmometer chamber 6 and the outer wall of single pile 1
Cable both passes through the passing channel above it and is introduced inside single pile 1 after summarizing, and is then drawn upwards from 1 inside of single pile.
Osmometer chamber 6 is internally provided with fine sand layer 8 and plugged zone 9, and osmometer 5 is embedded in fine sand after being wrapped up by geotextiles 10
In layer 8.In this way, single pile 1 can be acted on relative to the hydraulic pressure of 2 opposite side of earth pressure gauge by the gap of permeable hole 7 and fine sand layer
Osmometer 5, so as to detect the pore water pressure at bottom, middle and high place.
Protective case 34 ' is equipped with laterally reserved installing port 11 in the position corresponding to each 6 top of osmometer chamber, this reserved installation
Mouthfuls 11 for being packed into osmometer 5, fine sand layer 8 and plugged zone 9, after treating that plugged zone 9 loads, then is blocked in the later stage.
Monitoring device provided by the utility model is at the top of blower fan tower barrel, single-pile foundation and single-pile foundation pile body inner wall etc.
Key position arranges suitable monitoring device, and being mainly used for working property of the monitoring wind turbine during normal use ensures wind turbine
Safe operation.Such as monitor the inclination angle of tower, foundation structure under the action of the wind, the pile body amount of deflection of steel-pipe pile, pile body steel pipe
Stress variation situation, observation single-pile foundation deformation characteristic in use, the vibration acceleration for monitoring wind turbine each point, so as to
Calculate wind turbine body vibration frequency, meanwhile, earth pressure gauge and osmometer are disposed with, and right at the pile peripheral earth of prevailing wind direction surface layer
Stress meter is disposed at the pile lining answered, Stress property monitoring and the pile peripheral earth of the single-pile foundation during fan safe is run can be monitored
Stress-strain characteristics, actual measurement obtains pile body deformation and bending and soil pressure against piles and pore water pressure, discloses horizontal direction
Pile-soil interaction rule and pile foundation level displacement and the bending rule of development under cyclic load.With following beneficial to effect
Fruit：
First, by data acquisition device, realize the automation collection of data and be transmitted to land server, same wind
Machine, offshore boosting station each data acquisition device bus is taken to connect, and be ultimately connected to wind turbine, formed to vibration acceleration,
Tower verticality, tower swing the projects such as displacement, concentricity, foundation uneven settlement amount real time monitoring, early warning in real time.
Second, monitoring data are for work such as the design optimization of large diameter single pile foundation, construction method, later stage security evaluations
There is very important meaning, actual monitoring data can be compared with design data, so as to analyze existing safe clearance,
The single-pile foundation higher to design risk is designed Parameter analysis and then improves safe clearance, and the list relatively low to design risk
Pile foundation can optimize work and save manufacture cost.
Third, the content by increasing long term monitoring, can also monitor scour depth so as to check the anti-of scour protection
Effect is protected, the safety during ensuring single pile operation can be protected, the design of the scour protection measure for after provides experience.
Fourth, above-mentioned monitoring data have very important scientific research meaning and innovative significance, major diameter can not only be promoted
The theoretical research of single-pile foundation and design level can also promote the extensive use of large diameter single pile foundation.
Above-described embodiment is only the preferred embodiment of the utility model, is specifically not limited thereto, on this basis can basis
Actual needs is made with targetedly adjusting, so as to obtain different embodiments.For example, support base 31 is designed to other
Shape, alternatively, upper cone body 33 and lower cone body 32 are in addition to being hollow-core construction or solid construction, etc..Due to
Mode in the cards is more, just no longer illustrates one by one here.
Offshore wind farm single-pile foundation stake monitoring device provided by the utility model is described in detail above.Herein
In apply specific case the principle and embodiment of the utility model be expounded, the explanation of above example is only used
Understand the core concept of the utility model in help.It should be pointed out that for those skilled in the art, not
Be detached from the utility model principle under the premise of, can also to the utility model, some improvement and modification can also be carried out, these improve and repair
Decorations are also fallen into the protection domain of the utility model claims.
Claims (10)
1. offshore wind farm single-pile foundation stake monitoring device, including single pile, set on the monitoring device of the single pile, which is characterized in that
The monitoring device includes：
Data acquisition device, for acquiring monitoring data and being transmitted to land server；
Dynamic inclination instrument, at the top of the stake top and wind turbine of the single pile, to monitor the dynamic inclination of the single pile；
Vibration acceleration instrument, the pile body inner wall at the top of the single pile, to monitor the vibration acceleration of the single pile；
Inclinator, the basic inner platform of the single pile have been evenly arranged multiple geometrical standard points, and multiple inclinators are along main wind
To on the inside of the tower or pile foundation for being arranged in different elevations, to measure the inclination angle of tower, pile foundation under the action of the wind；
Earth pressure gauge and osmometer, along prevailing wind direction direction in a manner of matching be mounted on the single pile outer wall on apart from mud face not
At elevation, to monitor under fan loads effect Pile side soil body to the dynamic response of single-pile foundation；
The dynamic inclination instrument, vibration acceleration instrument, inclinator, earth pressure gauge and osmometer are all connected to the data acquisition dress
It puts.
2. offshore wind farm single-pile foundation stake monitoring device according to claim 1, which is characterized in that the earth pressure gauge leads to
It crosses protective device to be installed on the outside of the pile lining of the single pile sinking section, the protective device includes support base and lower cone body；
The support base is fixedly connected with the single pile sinking section, and the earth pressure gauge is installed in the lateral openings of the support base；
The earth pressure gauge is located inside the support base, and stress surface is parallel to the pile lining of the single pile sinking section and perpendicular to lower part
Support platform；The lower cone body is set on the bottom of the support base, and cone angle is downwardly directed along the longitudinal direction.
3. offshore wind farm single-pile foundation stake monitoring device according to claim 2, which is characterized in that the protective device into
One step includes upper cone body, and the upper cone body is set on the top of the support base, and cone angle is directed toward along the longitudinal direction
Side.
4. offshore wind farm single-pile foundation stake monitoring device according to claim 3, which is characterized in that the support base is in horizontal stroke
To the sleeve-shaped of arrangement, one end is fixedly connected with the pile lining outer surface of the single pile sinking section, is formed and is used on the other end
The lateral openings of the earth pressure gauge are installed.
5. offshore wind farm single-pile foundation stake monitoring device according to claim 1, which is characterized in that the osmometer passes through
Protective device is installed on the outside of the pile lining of the single pile sinking section, and the protective device includes protective case and lower cone body；Institute
It states and is equipped with osmometer chamber on the inner wall of protective case at different elevations, each osmometer is respectively arranged on corresponding osmometer chamber；
Permeable hole is offered on the side wall of the osmometer chamber, the monitoring cable of the osmometer is drawn upwards.
6. offshore wind farm single-pile foundation stake monitoring device according to claim 5, which is characterized in that each osmometer chamber
There is gap between the outer wall of the single pile to form passing channel, the monitoring cable of each osmometer both passes through its top
Passing channel and introduced after summarizing inside the single pile, then draw upwards inside the single pile.
7. offshore wind farm single-pile foundation stake monitoring device according to claim 6, which is characterized in that the osmometer chamber
Fine sand layer and plugged zone are internally provided with, the osmometer is embedded in the fine sand layer after being wrapped up by geotextiles.
8. offshore wind farm single-pile foundation stake monitoring device according to claim 7, which is characterized in that the protective case is right
The laterally reserved installing port for being blocked in the later stage should be equipped in the position of each osmometer top of chamber.
9. according to claim 1 to 8 any one of them offshore wind farm single-pile foundation stake monitoring device, which is characterized in that described
The inside of single pile is disposed with inclinometer pipe along prevailing wind direction, and the degree of disturbing of the single pile is monitored in a manner of by artificial observation.
10. offshore wind farm single-pile foundation stake monitoring device according to claim 9, which is characterized in that the single pile is in pole
Corrosion potential measuring point is disposed at the elevation of end low tide ± 5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721150087.6U CN207499004U (en) | 2017-09-08 | 2017-09-08 | Offshore wind farm single-pile foundation stake monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721150087.6U CN207499004U (en) | 2017-09-08 | 2017-09-08 | Offshore wind farm single-pile foundation stake monitoring device |
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| CN207499004U true CN207499004U (en) | 2018-06-15 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386342A (en) * | 2017-09-08 | 2017-11-24 | 华电重工股份有限公司 | Offshore wind farm single-pile foundation stake monitoring device |
| CN109469119A (en) * | 2018-12-26 | 2019-03-15 | 中交第三航务工程局有限公司 | A kind of test method of offshore wind farm steel tube pile embeded in rock |
| CN110823294A (en) * | 2019-12-12 | 2020-02-21 | 北京致感致联科技有限公司 | Floating type underwater information intelligent monitoring system |
| CN111677021A (en) * | 2020-06-09 | 2020-09-18 | 广东水电二局股份有限公司 | Wind power foundation strain full-life monitoring method |
| CN112013903A (en) * | 2020-09-02 | 2020-12-01 | 中国华能集团有限公司 | Quality control method and device for offshore wind power pile |
| CN114323153A (en) * | 2022-01-04 | 2022-04-12 | 中国华能集团清洁能源技术研究院有限公司 | Method and device for monitoring scouring and structural state of offshore wind power foundation and performing safety early warning |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107386342A (en) * | 2017-09-08 | 2017-11-24 | 华电重工股份有限公司 | Offshore wind farm single-pile foundation stake monitoring device |
| CN107386342B (en) * | 2017-09-08 | 2023-08-15 | 华电重工股份有限公司 | Marine wind power single pile foundation pile monitoring device |
| CN109469119A (en) * | 2018-12-26 | 2019-03-15 | 中交第三航务工程局有限公司 | A kind of test method of offshore wind farm steel tube pile embeded in rock |
| CN109469119B (en) * | 2018-12-26 | 2020-05-12 | 中交第三航务工程局有限公司 | Test method of offshore wind power socketed steel pipe pile |
| CN110823294A (en) * | 2019-12-12 | 2020-02-21 | 北京致感致联科技有限公司 | Floating type underwater information intelligent monitoring system |
| CN111677021A (en) * | 2020-06-09 | 2020-09-18 | 广东水电二局股份有限公司 | Wind power foundation strain full-life monitoring method |
| CN111677021B (en) * | 2020-06-09 | 2022-06-17 | 广东水电二局股份有限公司 | Wind power foundation strain full-life monitoring method |
| CN112013903A (en) * | 2020-09-02 | 2020-12-01 | 中国华能集团有限公司 | Quality control method and device for offshore wind power pile |
| CN114323153A (en) * | 2022-01-04 | 2022-04-12 | 中国华能集团清洁能源技术研究院有限公司 | Method and device for monitoring scouring and structural state of offshore wind power foundation and performing safety early warning |
| CN114323153B (en) * | 2022-01-04 | 2023-05-19 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation scouring and structural state monitoring and safety early warning method and device |
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