CN111121721A - Device and method for measuring inclination rate of wind power generation tower foundation model - Google Patents
Device and method for measuring inclination rate of wind power generation tower foundation model Download PDFInfo
- Publication number
- CN111121721A CN111121721A CN201911394930.9A CN201911394930A CN111121721A CN 111121721 A CN111121721 A CN 111121721A CN 201911394930 A CN201911394930 A CN 201911394930A CN 111121721 A CN111121721 A CN 111121721A
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- foundation
- measuring
- wind power
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
Abstract
The invention discloses a device and a method for measuring the inclination rate of a wind power tower foundation model, wherein the wind power tower foundation model is embedded in a simulation foundation, and a loaded upright post is fixedly connected to the wind power tower foundation model; the loading device comprises: the device comprises a pull rope, a support frame, a light container and a simulated load device, wherein one end of the pull rope is connected with a loaded upright rod, the other end of the pull rope is connected with the light container, the support frame is positioned between the loaded upright rod and the light container, the support frame supports the pull rope, and the simulated load device conveys liquid into the light container; the measuring device comprises a first displacement sensor, a second displacement sensor and a force sensor, the first displacement sensor and the second displacement sensor are arranged on the fixed frame and the loaded upright at intervals up and down, and the force sensor is arranged between the pull rope and the light container; the data acquisition device is connected with the first displacement sensor, the second displacement sensor and the force measuring sensor. The horizontal load applied at any loading moment and the inclination rate of the wind power generation tower foundation model at the moment can be obtained.
Description
Technical Field
The invention relates to a model measuring device and a method, in particular to a device and a method for measuring the inclination rate of a wind power generation tower foundation model.
Background
Energy exhaustion, environmental pollution and greenhouse effect are serious problems facing the world at present, and people are prompted to pay attention to developing, utilizing clean and renewable energy sources. Wind power is a clean renewable energy source, and wind power generation is a main form of utilizing wind power, wherein land wind power is the leading direction of wind power generation. The method has the advantages of abundant land wind energy resources, large storage capacity, wide distribution range, no pollution and the like in China, and can effectively solve the problems of energy exhaustion, environmental pollution and greenhouse effect by developing land wind power.
With the rapid development of wind power technology in mountainous areas, wind power generation is developed in large-scale manner by a fan, and in order to improve the bearing capacity of a wind power generator foundation, design of a wind power tower foundation and design of a tower drum need to be continuously innovated, so that different types of wind power generator foundations are successively developed.
Before a newly designed wind power tower foundation is put into use, multiple experiments are usually carried out on the bearing capacity of the wind power tower foundation, and measurement and analysis need to be carried out by means of a model because the construction of the wind power tower foundation needs high cost. The wind power generator is mainly subjected to horizontal load, and the bearing capacity of the wind power generator is mainly related to the inclination rate of the foundation. In order to compare the bearing capacity of wind power generation tower foundation models in different forms in a laboratory, the inventor provides a device for measuring the inclination rate of the wind power generation tower foundation model and a measuring method thereof.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device for measuring the inclination rate of a wind power generation tower foundation model, which can research the bearing capacity of a wind power tower foundation by measuring the inclination rate of the foundation model.
In order to solve the technical problems, the invention adopts the following technical scheme:
an apparatus for measuring a slope rate of a model of a wind turbine foundation, comprising: the system comprises a wind tower foundation model, a measuring device, a loading device and a data acquisition device; the wind tower foundation model is embedded in the simulation foundation, and a loaded upright rod is fixedly connected to the wind tower foundation model; the loading device comprises: the device comprises a pull rope, a support frame, a light container and a simulated load device, wherein one end of the pull rope is connected with the loaded vertical rod, the other end of the pull rope is connected with the light container, the support frame is positioned between the loaded vertical rod and the light container, the pull rope is supported by the support frame, and the simulated load device conveys liquid into the light container; the measuring device comprises a first displacement sensor, a second displacement sensor and a force sensor, the first displacement sensor and the second displacement sensor are vertically arranged on the fixed frame and the loaded upright at intervals, and the force sensor is arranged between the pull rope and the light container;
the data acquisition device is connected with the first displacement sensor, the second displacement sensor and the force measuring sensor.
Preferably, the analog load device includes: the water container and the outlet pipe that communicates the light container, install the valve on the outlet pipe.
Preferably, the simulation ground includes the ground container, from last soil horizon and the gravel layer of having set gradually down in the ground container, the drain valve has been seted up to ground container bottom.
Preferably, the foundation container is provided with scale marks, and geotextile is arranged between the soil layer and the gravel layer.
Preferably, the fixing frame is a fixing support, and the fixing support and the loaded vertical rod are arranged in parallel.
Preferably, the support frame is an angle adjusting support, a pulley is installed at the top of the angle adjusting support, the pull rope is wound on the pulley, and the angle adjusting support adjusts the horizontal height of the pull rope.
Preferably, the loaded upright is provided as a rigid upright.
As the same inventive concept, the invention aims to solve the other technical problem of providing a method for measuring the inclination rate of a wind power generation tower foundation model.
A method for measuring the inclination rate of a wind driven generator base model by using the device for measuring the inclination rate of the wind driven generator base model comprises the following steps:
1) enabling the simulated load device of the loading device to convey liquid into the light container, enabling the load cell to measure a horizontal load value and the data acquisition device to record data, meanwhile, applying a horizontal load to a loaded vertical rod through a pull rope, enabling the loaded vertical rod to incline, enabling the first displacement sensor to measure a displacement value delta L1 and the second displacement sensor to measure a displacement value delta L2, and enabling the data acquisition device to record data;
2) calculating the inclination rate of the corresponding wind driven generator foundation model under a horizontal load value at a certain moment, and obtaining the inclination rate of the wind driven generator foundation at the moment by the following formula, wherein the data value delta L1 of the first displacement sensor and the data value delta L2 measured by the second displacement sensor, which are recorded by the data acquisition device and correspond to the horizontal load, and the distance between the first displacement sensor and the second displacement sensor is H:
after the technical scheme is adopted, the invention has the beneficial effects that:
the device for measuring the inclination rate of the wind driven generator foundation model can obtain the inclination rate of the wind driven generator foundation model under the action of continuous different horizontal loads, further obtain the ultimate horizontal bearing capacity of the wind driven generator foundation model under the normal use condition and the ultimate horizontal bearing capacity of the wind driven generator foundation model under the ultimate condition, and can research the bearing capacity of different wind driven generator foundations by comparing the inclination rates of different wind driven generator foundation models under the same horizontal load.
Drawings
FIG. 1 is a schematic view of an initial state of an apparatus for measuring a tilt rate of a base model (square model) of a wind turbine according to the present invention;
FIG. 2 is a schematic diagram of an experimental state of the device for measuring the gradient of a foundation model (square model) of a wind turbine according to the present invention;
FIG. 3 is a schematic view of an initial state of the apparatus for measuring a tilt rate of a base model (cone model) of a wind turbine according to the present invention;
in the figure, 1-a wind driven generator foundation model, 2-a loaded upright rod, 3-a first displacement sensor, 4-a second displacement sensor, 5-a pull rope, 6-a support frame, 601-a pulley, 7-a light container, 8-a simulated load device, 801-a water container, 802-a water outlet pipe, 803-a valve, 9-a force measuring sensor, 10-a fixing frame, 11-a data acquisition device, 12-a foundation container, 1201-a drain valve, 13-a soil body layer, 14-a gravel layer and 15-geotextile.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The apparatus for measuring the inclination rate of the wind turbine foundation model shown in fig. 1 and 2 comprises: the wind power tower foundation model comprises a wind power tower foundation model 1, a measuring device, a loading device and a data acquisition device 11;
a wind tower foundation model 1 is embedded in a simulation foundation, and a loaded upright rod 2 is fixedly connected to the wind tower foundation model; the loading device comprises: the device comprises a pull rope 5, a support frame 6, a light container 7 and a simulated load device 8, wherein one end of the pull rope 5 is connected with a loaded vertical rod 2, the other end of the pull rope is connected with the light container 7, the support frame 6 is positioned between the loaded vertical rod 2 and the light container 9, the support frame 6 supports the pull rope, and the simulated load device 8 conveys liquid into the light container 7; the measuring device comprises a first displacement sensor 3, a second displacement sensor 4 and a force measuring sensor 9, wherein the first displacement sensor 3 and the second displacement sensor 4 are arranged on a fixed frame 10 and a loaded upright rod 2, the first displacement sensor 3 and the second displacement sensor 4 are arranged at intervals up and down, in the embodiment, the first displacement sensor 3 is positioned above the second displacement sensor 4, the force measuring sensor 9 is arranged between a pull rope 5 and a light container 7, and the force measuring sensor 9 is used for measuring the tensile force generated by liquid in the light container 7;
the data acquisition device 11 is connected with the first displacement sensor 3, the second displacement sensor 4 and the load cell 9.
In the invention, the data acquisition device 11 is preferably selected as a data acquisition instrument, and the pull rope 5 is a steel wire rope.
In most of the current loading tests, the horizontal load is mainly applied by applying a weight, and the magnitude of the applied load is determined by the mass of the selected weight, so that the discontinuity of the applied load is easily caused by the weight loading. And the required experiment time is longer, mainly because need wait for after the basic model and loaded pole setting 2 stabilize after applying certain horizontal load can read the displacement numerical value through first displacement sensor 3 and second displacement sensor 4. The simulation load device 8 of the invention conveys liquid into the light container 7, and loads any load by adopting liquid loading, thereby realizing the loading continuity.
In the present invention, the light container 7 is preferably a light bucket, and the liquid in the simulated load device 8 is preferably water, and the simulated load device 8 includes: a water container 801 and a water outlet pipe 802 communicated with the light container 7, wherein a valve 803 is arranged on the water outlet pipe 802.
The simulated foundation comprises a foundation container 12, a soil layer 13 and a gravel layer 14 are sequentially arranged in the foundation container 12 from top to bottom, and a drain valve 1201 is arranged at the bottom of the foundation container 12. The foundation container 12 is provided with scale marks, and a geotextile 15 is arranged between the soil body layer 13 and the gravel layer 14. During the experiment, in order to ensure that the initial experiment environment of the simulated foundation in the multiple comparison experiments is the same, sufficient water is injected into the foundation container 12 before each comparison experiment, so that the water submerges the same certain scale on the soil body layer 13, the foundation container is kept still for a long enough time to ensure that the water is absorbed by the soil body layer 13 and the gravel layer 14, the drain valve is opened, and the redundant water is discharged.
The gravel layer 14 mainly functions to facilitate the drainage of water in the foundation container 12, and if the gravel layer 14 is not arranged and only a soil layer is arranged, soil in the soil layer 13 can easily flow out along with water after water injection, so that the drainage valve 1201 can be easily blocked; the purpose of the geotextile 15 is to prevent soil from the soil mass layer 13 in the foundation container 12 from penetrating into the gravel bed and then further flowing out of the drain valve 1201, causing clogging of the drain valve 1201.
Research finds that the simulation foundation can also adopt: a soil layer is arranged in the foundation container 12; the laboratory in the form of the method does not need water injection, only needs to compact the soil of the soil body layer, and although the operation is convenient, errors can occur due to different soil loosening degrees in multiple experiments. The experimental effect is not as good as that of the simulated foundation in the form of "the soil layer 13 and the gravel layer 14 are arranged in the foundation container 12, and the drain valve 1201 is arranged at the bottom of the foundation container 12".
The fixing frame 10 is a fixing support which is arranged in parallel with the loaded upright rod.
The support frame 6 is arranged as an angle adjusting support, a pulley 601 is installed at the top of the angle adjusting support, the pull rope 5 is wound on the pulley 601, and the horizontal height of the pull rope 5 is adjusted by the angle adjusting support. The loaded vertical rod 2 is a rigid vertical rod.
The wind tower foundation model 1 may be square as shown in fig. 1 and 2, or may be tapered as shown in fig. 3, and other shapes of wind tower foundation models may be tested.
The method for measuring the inclination rate of the wind driven generator base model by using the device for measuring the inclination rate of the wind driven generator base model comprises the following steps:
1) the simulated load device 8 of the loading device conveys liquid into the light container 7, the horizontal load value measured by the load cell 9 is recorded by the data acquisition device, meanwhile, the horizontal load is applied to the loaded upright 2 through the pull rope 5, the loaded upright 2 is inclined, the displacement value delta L1 measured by the first displacement sensor 3 and the displacement value delta L2 measured by the second displacement sensor 4 are recorded by the data acquisition device;
2) the method comprises the following steps of obtaining the inclination rate of the foundation of the wind driven generator at a certain moment by the following formula, wherein the inclination rate is obtained by the following formula, namely the horizontal load value recorded by a data acquisition instrument at the certain moment, the data value delta L1 of the first displacement sensor corresponding to the horizontal load and the data value delta L2 measured by the second displacement sensor, and the distance between the first displacement sensor and the second displacement sensor is H:
in the experimental process of the embodiment, the valve on the water outlet pipe 802 is opened to enable the water in the water container 801 to flow into the light water bucket, so that a horizontal load is applied to the loaded upright rod 2, and the horizontal load can be transmitted into the data acquisition instrument through the load cell 9. Meanwhile, after a horizontal load is applied, the loaded vertical rod 2 inclines along the direction of the horizontal load, at this time, the data value Δ L1 obtained by the side of the first displacement sensor 3 and the data value Δ L2 obtained by the second displacement sensor are transmitted to the data acquisition instrument, so that the displacements of the displacement sensors 1 and 2 at a certain moment and the horizontal load applied at the moment can be obtained simultaneously. Since the distance between the first displacement sensor and the second displacement sensor is H. The inclination rate of the wind driven generator foundation at the moment is obtained through the following formula:
according to the experimental data, the ultimate horizontal bearing capacity of a certain wind driven generator base model under the normal use condition and the ultimate horizontal bearing capacity under the ultimate condition can be obtained through comparison; and under the same experimental condition, the bearing capacity of different wind driven generator foundations can be compared by comparing the inclination rates of different wind driven generator foundation models under the same horizontal load. The smaller the inclination rate is, the less the foundation bottom surface is separated from the foundation, i.e. the better the bearing capacity of the foundation is.
The device and the method for measuring the inclination rate of the wind driven generator foundation model are simple and convenient, are easy to operate, and can obtain the horizontal load applied at any loading moment and the inclination rate of the wind driven generator foundation model at the moment.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (8)
1. A device for measuring the inclination rate of a wind power generation tower foundation model is characterized in that,
the method comprises the following steps: the system comprises a wind tower foundation model, a measuring device, a loading device and a data acquisition device;
the wind tower foundation model is embedded in the simulation foundation, and a loaded upright rod is fixedly connected to the wind tower foundation model;
the loading device comprises: the device comprises a pull rope, a support frame, a light container and a simulated load device, wherein one end of the pull rope is connected with the loaded vertical rod, the other end of the pull rope is connected with the light container, the support frame is positioned between the loaded vertical rod and the light container, the pull rope is supported by the support frame, and the simulated load device conveys liquid into the light container;
the measuring device comprises a first displacement sensor, a second displacement sensor and a force sensor, the first displacement sensor and the second displacement sensor are vertically arranged on the fixed frame and the loaded upright at intervals, and the force sensor is arranged between the pull rope and the light container;
the data acquisition device is connected with the first displacement sensor, the second displacement sensor and the force measuring sensor.
2. The apparatus for measuring the slope of a model of a wind power tower foundation as claimed in claim 1, wherein said simulated load means comprises: the water container and the outlet pipe that communicates the light container, install the valve on the outlet pipe.
3. The apparatus according to claim 1, wherein the simulated foundation comprises a foundation container, a soil layer and a gravel layer are sequentially arranged in the foundation container from top to bottom, and a drain valve is arranged at the bottom of the foundation container.
4. The apparatus according to claim 3, wherein the foundation container has graduation marks, and a geotextile is disposed between the soil layer and the gravel layer.
5. The apparatus according to claim 1, wherein the fixing frame is a fixed support, and the fixed support is parallel to the loaded vertical rod.
6. The apparatus for measuring the inclination rate of the foundation model of a wind power generation tower according to claim 1, wherein the support frame is provided as an angle adjustment bracket, a pulley is installed on the top of the angle adjustment bracket, the pulling rope is wound on the pulley, and the angle adjustment bracket adjusts the horizontal height of the pulling rope.
7. The apparatus for measuring the slope of a model of a wind turbine tower foundation as claimed in claim 1, wherein said loaded uprights are rigid uprights.
8. A method for measuring the inclination rate of a wind power generation tower foundation model is characterized in that,
measuring the tilt rate of a wind power tower base model using the apparatus for measuring the tilt rate of a wind power tower base model of claim 1, comprising the steps of:
1) enabling the simulated load device of the loading device to convey liquid into the light container, enabling the load cell to measure a horizontal load value and the data acquisition device to record data, meanwhile, applying a horizontal load to a loaded vertical rod through a pull rope, enabling the loaded vertical rod to incline, enabling the first displacement sensor to measure a displacement value delta L1 and the second displacement sensor to measure a displacement value delta L2, and enabling the data acquisition device to record data;
2) calculating the inclination rate of the corresponding wind power generation tower foundation model under a horizontal load value at a certain moment, and obtaining the inclination rate of the wind power generation tower foundation at the moment by using the following formula, wherein the data value delta L1 of the first displacement sensor and the data value delta L2 measured by the second displacement sensor, which are recorded by the data acquisition device and correspond to the horizontal load, and the distance between the first displacement sensor and the second displacement sensor is H:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394930.9A CN111121721A (en) | 2019-12-30 | 2019-12-30 | Device and method for measuring inclination rate of wind power generation tower foundation model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394930.9A CN111121721A (en) | 2019-12-30 | 2019-12-30 | Device and method for measuring inclination rate of wind power generation tower foundation model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121721A true CN111121721A (en) | 2020-05-08 |
Family
ID=70505135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911394930.9A Pending CN111121721A (en) | 2019-12-30 | 2019-12-30 | Device and method for measuring inclination rate of wind power generation tower foundation model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117403712A (en) * | 2023-12-15 | 2024-01-16 | 山东大学 | Suction type barrel-shaped foundation bearing capacity test device, application method and installation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614021A (en) * | 2008-06-24 | 2009-12-30 | 韩国电力公社 | Moment test device |
| CN105569097A (en) * | 2015-12-21 | 2016-05-11 | 江苏建筑职业技术学院 | Test device and method for drawing bucket foundation model at any angles |
| CN108149720A (en) * | 2017-12-06 | 2018-06-12 | 河海大学 | A kind of experiment deviation correcting device rectified a deviation to oblique model pile foundation and method |
-
2019
- 2019-12-30 CN CN201911394930.9A patent/CN111121721A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614021A (en) * | 2008-06-24 | 2009-12-30 | 韩国电力公社 | Moment test device |
| CN105569097A (en) * | 2015-12-21 | 2016-05-11 | 江苏建筑职业技术学院 | Test device and method for drawing bucket foundation model at any angles |
| CN108149720A (en) * | 2017-12-06 | 2018-06-12 | 河海大学 | A kind of experiment deviation correcting device rectified a deviation to oblique model pile foundation and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117403712A (en) * | 2023-12-15 | 2024-01-16 | 山东大学 | Suction type barrel-shaped foundation bearing capacity test device, application method and installation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103398910B (en) | Novel offshore wind turbine superstructure-basis-native dynamic interaction model test platform | |
| WO2022021587A1 (en) | Test system for simulating multi-field coupling effect of offshore wind power rock-socketed pile | |
| CN105926686A (en) | Centrifugal model testing system and method studying common character of composite foundation and support structure | |
| CN110657073B (en) | Test device and method for testing offshore wind turbine power parameter evolution under action of wind waves | |
| CN105223087A (en) | Coarse-grained soil seepage flow direct shear test device and method | |
| CN105974088A (en) | Water level cycle rising and falling induced ground settlement test apparatus and test method thereof | |
| CN109187204A (en) | A kind of experimental rig for simulating pile-soil interaction when vertically recycling load-bearing | |
| CN203455243U (en) | Novel model testing platform for superstructure-foundation-soil power interaction of offshore wind turbine | |
| CN101798821B (en) | Local scouring forecast method of coastwise wind-electricity tower footing of muddy coast | |
| CN106337446A (en) | Indoor test device for pulling resistance of pile foundation and test method of indoor test device | |
| Ma et al. | An investigation into the lateral loading response of shallow bucket foundations for offshore wind turbines through centrifuge modeling in sand | |
| CN111121721A (en) | Device and method for measuring inclination rate of wind power generation tower foundation model | |
| KR20130019340A (en) | Experimental method for testing vertical reaction resonance period and movement performance of multi supporters located in the sea with gravity base offshore structure | |
| KR101137237B1 (en) | Apparatus for measuring support force of under water substructure | |
| CN207379694U (en) | Wave load loading device based on model slot | |
| CN110344453A (en) | Pressure type anchor rod bearer properties model test apparatus and method under horizontal loads | |
| CN207114540U (en) | Water power reservoir area rock slope with along layer near cut Experimental mimic system | |
| CN108343096B (en) | For measuring offshore wind turbine barrel base impedance,motional composite test device and method | |
| CN208545778U (en) | A kind of pile foundation dynamic response test device that can arbitrarily adjust load height | |
| CN105115387B (en) | Geogrid strain measuring equipment and method for measurement in a kind of model test | |
| CN205636834U (en) | Centrifugal model testing system of research composite foundation and common property of supporting construction | |
| CN107023030A (en) | Oval pile foundation and its performance test apparatus and method for marine tidal-current energy engineering | |
| CN107014670A (en) | The test device of the multidirectional horizontal bearing capacity of single pile under compound load action | |
| CN107165204A (en) | It is a kind of to consider the method for testing that artesian water acts on Single Pile horizontal bearing characteristic | |
| CN207992203U (en) | A kind of experimental rig for simulating the rectangle head boundary effect soil body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |