CN114894509A - Centrifuge test model for testing suction bucket foundation - Google Patents
Centrifuge test model for testing suction bucket foundation Download PDFInfo
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- CN114894509A CN114894509A CN202210298390.XA CN202210298390A CN114894509A CN 114894509 A CN114894509 A CN 114894509A CN 202210298390 A CN202210298390 A CN 202210298390A CN 114894509 A CN114894509 A CN 114894509A
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- suction bucket
- bucket foundation
- test
- test model
- suction
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses a centrifugal machine test model for testing a suction bucket foundation, which comprises: the testing device comprises a suction barrel base and a testing structure, wherein a water inlet and a water outlet are formed in the top of the suction barrel base; the test structure includes: the transition frame is arranged at the top of the suction bucket foundation; the fixed frame is arranged above the transition frame, and an accommodating space is defined in the fixed frame; the lifting shaft is arranged on the transition frame and extends into the accommodating space, and a force sensor is arranged at the top of the lifting shaft; the lifting motor and the balancing weight are respectively connected with the force sensor through a fixed pulley arranged at the top of the accommodating space; the suction bucket comprises a rotary motor and a rotary shaft, wherein the rotary motor is arranged at the top of the accommodating space, the first end of the rotary shaft is connected with the rotary motor, the second end of the rotary shaft extends into the suction bucket foundation, and a stirring structure is arranged at the second end of the rotary shaft.
Description
Technical Field
The invention relates to the field of marine foundation structures, in particular to a centrifugal machine test model for testing a suction bucket foundation.
Background
With the continuous increase of global energy demand, the development of oil and gas resources in land areas and shallow seas is gradually saturated, and the development of oil and gas resources in the world is shifted to deep seas from land areas and shallow seas, so that deep sea engineering activities are increasingly frequent, and the deep seas are becoming popular fields of comprehensive science and technology strength of various countries. The suction bucket foundation is a foundation structure widely used in deep sea engineering, and the suction bucket is installed in the following steps that firstly, water is pumped at the top of the suction bucket, negative pressure is formed inside the suction bucket, and the foundation penetrates into a seabed under the influence of the pressure difference between the inside and the outside of the bucket body until the soil body in the bucket reaches the top of the suction bucket. Due to the installation mode, the soil plug effect generated by the soil body inside the suction bucket foundation causes that the suction bucket foundation cannot be installed to the preset depth, and the final bearing performance of the suction bucket foundation is influenced.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. To this end, it is an object of the present invention to provide a suction bucket foundation test centrifuge test model.
In one aspect of the invention, a suction bucket foundation test centrifuge test model is presented. According to the embodiment of the invention, the test model of the suction bucket foundation test centrifuge comprises a suction bucket foundation and a test structure, wherein the top of the suction bucket foundation is provided with a water inlet and a water outlet; the test structure includes:
the transition frame is arranged at the top of the suction bucket foundation; the fixed frame is arranged above the transition frame, and an accommodating space is defined in the fixed frame;
the lifting shaft is arranged on the transition frame and extends into the accommodating space, and a force sensor is arranged at the top of the lifting shaft;
the lifting motor and the balancing weight are respectively connected with the force sensor through a fixed pulley arranged at the top of the accommodating space;
the suction bucket comprises a rotary motor and a rotary shaft, wherein the rotary motor is arranged at the top of the accommodating space, the first end of the rotary shaft is connected with the rotary motor, the second end of the rotary shaft extends into the suction bucket foundation, and a stirring structure is arranged at the second end of the rotary shaft.
The centrifuge model test model is used for removing the soil plug effect of the suction bucket foundation, and verifying the effective performance and reliability of the device by testing the bearing performance of the suction bucket foundation after the soil plug removal and the installation without the soil plug removal through the lifting system.
In addition, the test model of the suction bucket foundation test centrifuge according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the suction bucket foundation test centrifuge test model further comprises: the vacuum pump is connected with the water outlet through the first water storage barrel, and the second water storage barrel is connected with the water inlet.
In some embodiments of the present invention, the lifting motor is disposed at a bottom of the accommodating space.
In some embodiments of the present invention, the fixed pulley is disposed at a top of the accommodating space.
In some embodiments of the present invention, the lifting motor is connected to the force sensor through one of the fixed pulleys, and the counterweight is connected to the force sensor through two of the fixed pulleys.
In some embodiments of the invention, the lifting shaft, the force sensor, the lifting motor and the counterweight each comprise two.
In some embodiments of the present invention, a ball bearing and a sealing ring are disposed at a connection of the rotating shaft and the transition frame and the suction bucket base.
In some embodiments of the present invention, the stirring structure is selected from at least one of a rod-like structure and a sheet-like structure.
In some embodiments of the invention, the inlet end of the water inlet is provided with a solenoid valve.
In the suction bucket foundation test centrifuge test model according to the present invention, the members such as the lifting motor, the fixed pulley, the lifting shaft, the transition frame, the force sensor, and the weight block are also referred to as a "lifting system", the members such as the rotating motor, the rotating shaft, and the stirring structure are also referred to as a "rotating system", and the members such as the first water storage bucket, the second water storage bucket, and the vacuum pump are also referred to as a "suction system".
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a suction bucket foundation test centrifuge test model according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a lifting system in a suction bucket foundation test centrifuge test model according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of a spin system in a suction bucket foundation test centrifuge test model according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a suction rotor system in a test model of a suction bucket foundation test centrifuge, according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a suction bucket foundation test centrifuge test model according to another embodiment of the present invention.
Reference numerals:
10-a suction barrel base, 11-a water inlet, 12-an electromagnetic valve, 13-a water outlet, 14-a first water storage barrel, 15-a vacuum pump, 16, a second water storage barrel,
20-a fixed frame, 21-a lifting motor, 22-a rotating motor, 23-a fixed pulley,
30-rotating shaft, 31-stirring structure, 32-ball bearing, 33-sealing ring,
40-lifting shaft, 41-transition frame, 42-force sensor, 43-cable, 44-counterweight,
50-model box, 51-upper water body, 52-lower soil body.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In one aspect of the invention, a suction bucket foundation test centrifuge test model is presented. Referring to fig. 1-3, the suction bucket foundation test centrifuge test model includes a suction bucket foundation 10 and a test structure according to an embodiment of the invention. Wherein, the top of the suction bucket foundation 10 is provided with a water inlet 11 and a water outlet 13; the test structure includes: the transition frame 41, the fixing frame 20, the lifting shaft 40, the lifting motor 21, the counterweight 44, the rotating motor 22 and the rotating shaft 30 are arranged on the top of the suction bucket foundation 10; the fixing frame 20 is arranged above the transition frame 41, and an accommodating space is defined in the fixing frame 20; the lifting shaft 40 is arranged on the transition frame 41 and extends into the accommodating space in the fixed frame 20, and the top of the lifting shaft 40 is provided with a force sensor 42; the lifting motor 21 and the balancing weight 44 are respectively connected with the force sensor 42 through a fixed pulley 23 arranged at the top of the accommodating space in the fixing frame 20; the rotating motor 22 is disposed at the top of the accommodating space in the fixing frame 20, a first end of the rotating shaft 30 is connected to the rotating motor 22, a second end of the rotating shaft 30 extends into the suction bucket base 10, and a stirring structure 31 is disposed at the second end of the rotating shaft 30.
Referring to fig. 4, the suction bucket foundation test centrifuge test model of the present invention further comprises, in accordance with an embodiment of the present invention: the water storage device comprises a first water storage barrel 14, a second water storage barrel 16 and a vacuum pump 15, wherein the vacuum pump 15 is connected with a water outlet 13 through the first water storage barrel 14, and the second water storage barrel 16 is connected with a water inlet 11.
According to some embodiments of the present invention, the lifting motor 21 is provided at the bottom of the receiving space in the holder 20.
According to some embodiments of the present invention, the fixed pulley 23 is provided at the top of the receiving space in the fixed frame 20.
According to some embodiments of the present invention, the lifting motor 21 is connected to the force sensor 42 through one fixed pulley 23, and the weight 44 is connected to the force sensor 42 through two fixed pulleys 23.
Specifically, the lifting motor 21, the fixed pulley 23, the force sensor 42 and the counterweight 44 can be connected through a cable 43.
According to some embodiments of the present invention, the lifting shaft 40, the force sensor 42, the lifting motor 21, and the weight 44 each include two.
According to some embodiments of the present invention, the connection of the rotating shaft 30 with the transition frame 41 and the suction bucket foundation 10 is provided with a ball bearing 32 and a sealing ring 33.
According to some embodiments of the present invention, the agitating structure 31 is selected from at least one of a rod-like structure and a sheet-like structure.
According to some embodiments of the invention, the inlet end of the water inlet 11 is provided with a solenoid valve 12.
Additionally, referring to fig. 5, according to some embodiments of the present invention, the suction bucket foundation test centrifuge test model of the present invention further comprises: and a mold box 50. The mold box 50 defines a containment space within which is disposed an upper body of water 51 and a lower body of soil 52 for testing the centrifuge test. The suction bucket foundation 10 and the test structure in the test model are erected on the model box 50 through the fixing frame 20, and the suction bucket foundation 10 is positioned above the lower soil body 52.
For ease of understanding, the following description is provided of a suction bucket foundation test centrifuge test method using the suction bucket foundation test centrifuge test model of the present invention:
(a) the self-weight injection process: the suction bucket foundation 20 is penetrated into the soil body for testing by the gravity of the suction bucket foundation 10;
(b) suction penetration stage: after the self-weight injection of the suction bucket foundation 20 is completed, the vacuum pump 15 is turned on, negative pressure is applied to the interior of the suction bucket foundation 20, so that the suction bucket foundation 20 further downwards injects a soil body, at the moment, the rotating system is turned on, the stirring structure 31 is driven by the rotating shaft 30 to stir up the soil plug in the suction bucket foundation 20 to form a soil plug, at the moment, the electromagnetic valve at the water inlet 12 is turned on, a sufficient water source is provided for the interior of the suction bucket foundation 20, and the soil plug in the bucket can be fully stirred up;
(c) a monotonous drawing stage: after the suction bucket foundation 20 is installed, the rotation system and the suction system are stopped, water is injected into the bucket, the lifting system is opened, the suction bucket foundation 20 is lifted upwards at a constant speed, and the change of the vertical bearing capacity of the suction bucket foundation 20 in the monotone drawing stage is measured through the force sensor 42.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise indicated. For those skilled in the art, it is understood that the terms "mounted," "connected," "fixed," and the like are used broadly, and may be, for example, fixedly connected, detachably connected, or integrated, according to specific situations and specific conditions and limitations in the present invention; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship unless expressly stated otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A centrifugal machine test model for testing a suction bucket foundation is characterized by comprising a suction bucket foundation and a test structure, wherein a water inlet and a water outlet are formed in the top of the suction bucket foundation; the test structure includes:
the transition frame is arranged at the top of the suction bucket foundation; the fixed frame is arranged above the transition frame, and an accommodating space is defined in the fixed frame;
the lifting shaft is arranged on the transition frame and extends into the accommodating space, and a force sensor is arranged at the top of the lifting shaft;
the lifting motor and the balancing weight are respectively connected with the force sensor through a fixed pulley arranged at the top of the accommodating space;
the suction bucket comprises a rotary motor and a rotary shaft, wherein the rotary motor is arranged at the top of the accommodating space, the first end of the rotary shaft is connected with the rotary motor, the second end of the rotary shaft extends into the suction bucket foundation, and a stirring structure is arranged at the second end of the rotary shaft.
2. The suction bucket foundation test centrifuge test model of claim 1, further comprising: the vacuum pump is connected with the water outlet through the first water storage barrel, and the second water storage barrel is connected with the water inlet.
3. The suction bucket foundation test centrifuge test model of claim 1, wherein said lifting motor is disposed at a bottom of said receiving space.
4. The suction bucket foundation test centrifuge test model of claim 1, wherein said fixed pulley is disposed at a top of said receiving space.
5. The suction bucket foundation test centrifuge test model of claim 1, wherein said lifting motor is connected to said force sensor through one of said fixed pulleys, and said counterweight is connected to said force sensor through two of said fixed pulleys.
6. The suction bucket foundation test centrifuge test model of claim 1, wherein said lift shaft, said force sensor, said lift motor, and said weight block each comprise two.
7. The suction bucket foundation test centrifuge test model of claim 1, wherein a ball bearing and a seal ring are provided at the connection of the rotating shaft with the transition frame and the suction bucket foundation.
8. The suction bucket foundation test centrifuge test model of claim 1, wherein said agitating structure is selected from at least one of a rod-like structure, a sheet-like structure.
9. The suction bucket foundation test centrifuge test model of claim 1, wherein an inlet end of said water inlet is provided with a solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210298390.XA CN114894509A (en) | 2022-03-24 | 2022-03-24 | Centrifuge test model for testing suction bucket foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210298390.XA CN114894509A (en) | 2022-03-24 | 2022-03-24 | Centrifuge test model for testing suction bucket foundation |
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| CN114894509A true CN114894509A (en) | 2022-08-12 |
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| CN202210298390.XA Pending CN114894509A (en) | 2022-03-24 | 2022-03-24 | Centrifuge test model for testing suction bucket foundation |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558744A (en) * | 1982-09-14 | 1985-12-17 | Canocean Resources Ltd. | Subsea caisson and method of installing same |
| CN101839815A (en) * | 2010-05-11 | 2010-09-22 | 浙江大学 | Installation and complex loading model testing platform for novel deep sea mooring foundation |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN109060504A (en) * | 2018-08-01 | 2018-12-21 | 清华大学 | Soil and structure interface testing machine |
| CN112195986A (en) * | 2020-09-30 | 2021-01-08 | 浙大城市学院 | Offshore barrel type foundation simulation test model device and penetration test method |
| CN113740095A (en) * | 2021-09-14 | 2021-12-03 | 中海石油(中国)有限公司湛江分公司 | Simulation experiment device and simulation experiment method for building suction pile well |
-
2022
- 2022-03-24 CN CN202210298390.XA patent/CN114894509A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558744A (en) * | 1982-09-14 | 1985-12-17 | Canocean Resources Ltd. | Subsea caisson and method of installing same |
| CN101839815A (en) * | 2010-05-11 | 2010-09-22 | 浙江大学 | Installation and complex loading model testing platform for novel deep sea mooring foundation |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN109060504A (en) * | 2018-08-01 | 2018-12-21 | 清华大学 | Soil and structure interface testing machine |
| CN112195986A (en) * | 2020-09-30 | 2021-01-08 | 浙大城市学院 | Offshore barrel type foundation simulation test model device and penetration test method |
| CN113740095A (en) * | 2021-09-14 | 2021-12-03 | 中海石油(中国)有限公司湛江分公司 | Simulation experiment device and simulation experiment method for building suction pile well |
Non-Patent Citations (1)
| Title |
|---|
| 韦卓等: "黏土中深水吸力锚负压安装试验研究", 《石油矿场机械》 * |
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