CN111305284A - Bridge pile foundation erosion model test device and method based on transparent soil - Google Patents
Bridge pile foundation erosion model test device and method based on transparent soil Download PDFInfo
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- CN111305284A CN111305284A CN202010109768.8A CN202010109768A CN111305284A CN 111305284 A CN111305284 A CN 111305284A CN 202010109768 A CN202010109768 A CN 202010109768A CN 111305284 A CN111305284 A CN 111305284A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention discloses a bridge pile foundation erosion model test device and method based on transparent soil. The inlet and outlet of the two ends of the water tank of the circulating water tank system are communicated with the flow making pump, the regulating valve and the electromagnetic flowmeter which are mutually spaced through connecting pipelines, and the flow making pump is driven by the variable-frequency speed regulator. The transparent soil simulation system comprises circulating fluid and transparent soil which are prepared based on similar criteria. The circulating fluid, the transparent soil and the model pile foundation are distributed in the water tank according to the design. During testing, the two laser transmitters form two speckle sections in circulating fluid and transparent soil, the pumping pump is driven to enable the circulating fluid to flow, and the two industrial cameras record changes of speckle fields. The testing method of the device comprises the steps of molding, preparing transparent materials, flushing fluid and the like. The device realizes dynamic evolution of the washout pit and visual measurement of a displacement field and a flow field in the process of pile foundation washout, is convenient to operate and has comprehensive data.
Description
Technical Field
The invention relates to the technical field of visual model tests of civil and hydraulic engineering, in particular to a bridge pile foundation erosion model test device and method based on transparent soil.
Background
Scouring is one of the important factors causing the destruction of the bridge pile foundation. The bridge pile foundation is generally in a very complex water environment, and the scouring action causes the loss of soil around the bridge pile foundation to form a scouring pit, thereby seriously threatening the service safety of the bridge. The washout pit often causes the interaction change of the pile foundation and the soil body around the pile foundation and generates deformation in the forming process, directly concerns the bearing capacity of the bridge pile foundation, and has very important practical significance.
At present, research aiming at bridge pile foundation scouring mainly comprises theoretical analysis, field observation, numerical simulation and model test. The model test is taken as an important research means in civil and hydraulic engineering, wherein the scouring research is started by a water tank device for carrying out tests. The traditional water tank device mainly aims at the measurement of the range above the surface of a river bed, including flow velocity measurement, water level measurement, terrain measurement and the like, and cannot be used for measuring the deformation characteristics inside the river bed.
However, the soil around the pile foundation, which is the main subject of the scouring action, is difficult to achieve in which to embed the sensors and is likely to interfere with the flow-around field around the pile foundation. Therefore, it is needed to develop a testing device and method for non-plug-in measurement of the development change of the soil displacement around the pile foundation in the process of bridge pile foundation scouring.
Disclosure of Invention
The invention aims to provide a bridge pile foundation erosion model test device and method based on transparent soil.
The technical scheme adopted for achieving the purpose of the invention is that the transparent soil-based bridge pile foundation erosion model test device comprises a circulating water tank system, a transparent soil simulation system and an imaging device.
The circulating water tank system comprises a water tank supporting frame, a water tank, a connecting pipeline, a flow making pump and a variable frequency speed regulator, wherein the water tank supporting frame is a rectangular box body with an open upper end and a hollow interior, the water tank is installed at the upper end of the water tank supporting frame, and the connecting pipeline is arranged inside the water tank supporting frame.
The connecting pipeline comprises a main pipeline and a bypass pipeline, the main pipeline is U-shaped, the main pipeline comprises a horizontal pipe section and two vertical pipe sections, the horizontal pipe section is installed at the bottom of the water tank supporting frame, and the two vertical pipe sections are respectively close to two side walls of the water tank supporting frame, which are not adjacent to each other.
The horizontal pipe section of trunk line is provided with governing valve I, electromagnetic flowmeter I and the pump of making a class of mutual interval, makes the pump and is connected with variable frequency speed regulator.
Bypass pipeline is connected to the trunk line, and bypass pipeline's both ends all communicate with the trunk line, and governing valve I and electromagnetic flowmeter I all are located between the bypass pipeline both ends. And the bypass pipeline is provided with a regulating valve II and an electromagnetic flowmeter II which are mutually spaced.
The bottom of basin is provided with test section recess and two access & exit, and the test section recess is located between two access & exits. The two entrances and exits are respectively communicated with the two vertical pipe sections of the main pipeline, and each entrance and exit is provided with a honeycomb box and a guide plate.
Transparent soil simulation system is filled in the test section recess including tracer coloring agent, tracer particle, circulation fluid and transparent soil, the transparent soil that mixes the tracer coloring agent, and the circulation fluid that mixes the tracer particle pours into connecting tube and basin in. And a model pile foundation is embedded in the groove of the test section.
The imaging device includes two laser emitters and two industrial cameras disposed outside of a water tank.
During testing, the variable-frequency speed regulator drives the flow-making pump, the flow-making pump drives circulating fluid to flow in the connecting pipeline and the water tank, each laser emitter forms a speckle section in the circulating fluid and the transparent soil, the two laser emitters form two mutually-perpendicular speckle sections, the two industrial cameras respectively shoot the speckle sections formed by the two laser emitters, and section pictures are analyzed by using a digital image processing technology.
Further, the water tank is made of organic glass.
Further, the model pile foundation is made of organic glass, and the model pile foundation is of a single pile, a pile group-bearing platform structure or a large open caisson foundation.
A bridge pile foundation erosion model test method based on transparent soil comprises the following steps based on the test device:
1) and manufacturing the model pile foundation.
2) The circulating fluid and the clear soil were formulated. Wherein, add the tracer particle in the circulating fluid, add the tracer coloring agent and distinguish the circulating fluid in the transparent soil.
3) And installing and debugging the circulating water tank system.
4) And filling the transparent soil into the groove of the test section to a design height, and embedding the model pile foundation at a design position in the transparent soil.
5) And slowly injecting circulating fluid into the water tank and the connecting pipeline to a designed position.
6) Arranging and adjusting the laser emitter and the industrial camera.
7) And starting the flow-making pump, the variable-frequency speed regulator, the laser transmitter and the industrial camera, driving the flow-making pump through the variable-frequency speed regulator until the circulating fluid reaches a preset mode, and setting the shooting frequency of the industrial camera to carry out automatic continuous shooting.
8) When the washing of the transparent soil reaches balance, the horizontal positions and the heights of the two laser transmitters are adjusted, and the industrial camera shoots the circulating fluid and section images of the transparent soil at different positions.
9) And saving the section image shot by the industrial camera, closing the flow-making pump and the laser emitter, and sorting the test equipment.
10) And processing the section image by using a digital image processing technology to obtain the dynamic evolution of the scour pit around the model pile foundation, the transparent soil displacement field and the circulating fluid flow field.
The invention has the beneficial effects that:
1. in the invention, tracer particles are added into a circulating fluid, and a tracer coloring agent is added into transparent soil to distinguish a circulating fluid-transparent soil interface, so that dynamic evolution of a washout pit around a pile foundation and visual measurement of a transparent soil displacement field and a circulating fluid flow field are realized in the process of washing the bridge pile foundation;
2. the size of the circulating water tank system is obviously smaller than that of the traditional water tank system, and the minimum circulating design concept is adopted; the total amount of the circulating fluid of the system is small, and the waste of test materials is reduced; the system circulation loop is only connected with a pipeline, so that the energy loss in the circulation process is small;
3. the method can be used for researching the influence of factors such as pile foundation design variables, river water conditions, riverbed soil layers and the like on scouring evolution, and can also be used for the related visual research of sediment movement;
4. the invention has various functions and convenient test operation, not only improves the scientific research efficiency, but also provides a teaching test instrument for researching hydraulics and river dynamics.
Drawings
FIG. 1 is a schematic view of the entire test apparatus of the present invention;
FIG. 2 is a top view of the connecting conduit;
FIG. 3 is a top view of the sink;
FIG. 4 is a schematic diagram of a laser emitter and industrial camera distribution;
fig. 5 is a schematic view of a honeycomb box.
In the figure: the water tank comprises a water tank supporting frame 1, a water tank 2, a test section groove 201, an inlet and an outlet 202, a honeycomb box 203, a guide plate 204, a connecting pipeline 3, a main pipeline 301, a regulating valve I3011, an electromagnetic flowmeter I3012, a bypass pipeline 302, a regulating valve II 3021, an electromagnetic flowmeter II 3022, a flow generating pump 4, a variable-frequency speed regulator 5, a tracing coloring agent 6, tracing particles 7, circulating fluid 8, transparent soil 9, a model pile foundation 10, a laser emitter 11 and an industrial camera 12.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses a bridge pile foundation scouring model test device based on transparent soil, which comprises a circulating water tank system, a transparent soil simulation system and an imaging device.
Referring to fig. 1, the circulating water tank system includes a water tank support frame 1, a water tank 2, a connecting pipeline 3, a flow-making pump 4 and a variable frequency speed regulator 5, the water tank support frame 1 is a rectangular box body with an open upper end and a hollow interior, the water tank 2 is installed at the upper end of the water tank support frame 1, and the connecting pipeline 3 is arranged inside the water tank support frame 1. The water tank supporting frame 1 is fixed on the ground, and plays a role in supporting and stabilizing the test device and providing required reaction force.
Referring to fig. 2, the connecting pipeline 3 includes a main pipeline 301 and a bypass pipeline 302, the main pipeline 301 is U-shaped, the main pipeline 301 includes a horizontal pipe section and two vertical pipe sections, the horizontal pipe section is installed at the bottom of the sink supporting frame 1, and the two vertical pipe sections are respectively close to two non-adjacent side walls of the sink supporting frame 1.
Referring to fig. 2, a regulating valve i 3011, an electromagnetic flowmeter i 3012 and a flow-making pump 4 are arranged on a horizontal pipe section of the main pipeline 301 at intervals, and the flow-making pump 4 is connected with a variable-frequency speed regulator 5.
The tank 2 is made of plexiglas, allowing laser penetration. Referring to fig. 1 or 3, the bottom of the water tank 2 is provided with a test section groove 201 and two ports 202, and the test section groove 201 is located between the two ports 202. The two ports 202 are respectively communicated with two vertical pipe sections of the main pipeline 301, and each port 202 is provided with a honeycomb box 203 and a deflector 204, which are schematically shown in fig. 5 as the honeycomb box 203.
The transparent soil simulation system comprises a tracing coloring agent 6, tracing particles 7, circulating fluid 8 and transparent soil 9, the transparent soil 9 mixed with the tracing coloring agent 6 is filled into the test section groove 201, and the circulating fluid 8 mixed with the tracing particles 7 is injected into the connecting pipeline 3 and the water tank 2. The tracer particles 7 are used for tracing the circulating fluid 8, and the tracer coloring agent 6 is used for coloring the transparent soil 9 and accurately distinguishing the transparent soil 9 from the circulating fluid 8. The circulating fluid 8 and the transparent soil 9 are used for simulating substances of river water and substances of riverbed soil layers respectively, and are based on transparent soil technology and similar criteria.
Referring to fig. 1, 3 or 4, the model pile foundation 10 is embedded in the test section groove 201, the model pile foundation 10 is made of organic glass and allows laser to penetrate, and the model pile foundation 10 is in a single pile, a grouped pile-bearing platform structure or a large open caisson foundation.
Referring to fig. 4, the imaging apparatus includes two laser transmitters 11 and two industrial cameras 12 disposed outside the water bath 2, and the two laser transmitters 11 and the two industrial cameras 12 are mounted on a bracket whose height and angle are adjustable, thereby ensuring positional adjustment of the laser transmitters 11 and the industrial cameras 12.
During testing, the variable-frequency speed regulator 5 drives the flow-making pump 4, the flow-making pump 4 drives the circulating fluid 8 to flow in the connecting pipeline 3 and the water tank 2, each laser emitter 11 forms a speckle section inside the circulating fluid 8 and the transparent soil 9, the two laser emitters 11 form two mutually perpendicular speckle sections, the two industrial cameras 12 respectively shoot the speckle sections formed by the two laser emitters 11, and section pictures are analyzed by using a digital image processing technology.
In addition, the testing device in this embodiment can test the erosion of the riverbed soil layer by the water flow, i.e. the model pile foundation 10 in the groove 201 of the testing section is pulled out, and then the variable frequency speed regulator 5, the flow generating pump 4, the laser emitter 11 and the two industrial cameras 12 are started for testing.
Example 2:
the embodiment discloses a bridge pile foundation erosion model test method based on transparent soil, and the test device based on the embodiment 1 comprises the following steps:
1) and manufacturing the model pile foundation 10 according to the designed size.
2) The circulating fluid 8 and the transparent soil 9 are prepared based on similar criteria, transparent soil technology, river water flow environment and riverbed geological environment engineering data. Wherein, the screened tracer particles 7 are added into the circulating fluid 8 and uniformly stirred, and the tracer coloring agent 6 is added into the transparent soil 9 and uniformly stirred, so that the transparent soil 9 and the circulating fluid 10 are distinguished.
3) The circulating water tank system is installed, a water tank supporting frame 1, a water tank 2, a connecting pipeline 3, a flow making pump 4 and a variable-frequency speed regulator 5 are assembled according to a design drawing, circulating fluid 8 is injected to carry out leakage detection, flow making capacity debugging, control debugging and the like, the data relation among the variable-frequency speed regulator 5, the flow making pump 4, an electromagnetic flowmeter I3012 and an electromagnetic flowmeter II 3022 is obtained, and the circulating fluid 8 is discharged and a cleaning device is cleaned after the data relation is finished.
4) And fixing the model pile foundation 10 at the design position in the test section groove 201 through a fixing frame, uniformly and hierarchically filling transparent soil 9 into the test section groove 201, controlling the thickness of each layer of transparent soil 9 to be 50 mm until the transparent soil is filled to the design height, and taking down the fixing frame of the model pile foundation 10.
5) The circulating fluid 8 is slowly injected to the water tank 2 and the connecting pipe 3 through the inlet and outlet 202 to a designed position, and left to stand for 24 hours.
6) The laser transmitter 11 and the industrial camera 12 are arranged and adjusted. The two laser transmitters 11 are respectively arranged below and on one side of the test section groove 201, the laser emitted by one laser transmitter 11 irradiates the test section groove 201 to form a vertical laser section, the laser emitted by the other laser transmitter 11 irradiates the test section groove 201 to form a horizontal laser section, and the two laser sections are perpendicular to each other. The shooting directions of the two industrial cameras 12 are respectively perpendicular to the two laser sections, and the optimal view field is obtained.
7) And (2) closing an illuminating light source in a laboratory, opening the regulating valve I3011 and the regulating valve II 3021, controlling large flow by the regulating valve I3011, controlling small flow by the regulating valve II 3021, starting the variable-frequency speed regulator 5, and driving the flow-making pump 4 by the variable-frequency speed regulator 5 until the circulating fluid 8 reaches a preset mode. And (3) starting the laser transmitter 11, starting the industrial camera 12 after laser is stable, setting the interval shooting time of the industrial camera 12, and automatically and continuously shooting the laser section.
8) When the shape of the transparent soil 9 is not obviously changed under the flushing of the circulating fluid 8, the flushing is balanced, the horizontal positions and the heights of the two laser transmitters 11 are adjusted, and the industrial camera 12 shoots sectional images of the circulating fluid 8 and the transparent soil 9 at different positions.
9) And (4) storing the section image shot by the industrial camera 12, closing the flow-making pump 4 and the laser emitter 5, and sorting the test equipment.
10) And processing the section image by using a digital image processing technology to obtain the dynamic evolution of the scour pit around the model pile foundation 10, the transparent soil 9 displacement field and the circulating fluid 8 flow field. Wherein, the section picture obtained in the step 7) mainly obtains the dynamic evolution of the scour pit, the circulating fluid 8 flow field and the transparent soil 9 displacement field around the model pile foundation 10, and the section picture obtained in the step 8) mainly obtains the circulating fluid 8 flow field and the three-dimensional topography of the scour pit at different positions.
Example 3:
the embodiment discloses a bridge pile foundation scouring model test device based on transparent soil, which comprises a circulating water tank system, a transparent soil simulation system and an imaging device.
Referring to fig. 1, the circulating water tank system includes a water tank support frame 1, a water tank 2, a connecting pipeline 3, a flow-making pump 4 and a variable frequency speed regulator 5, the water tank support frame 1 is a rectangular box body with an open upper end and a hollow interior, the water tank 2 is installed at the upper end of the water tank support frame 1, and the connecting pipeline 3 is arranged inside the water tank support frame 1.
Referring to fig. 2, the connecting pipeline 3 includes a main pipeline 301 and a bypass pipeline 302, the main pipeline 301 is U-shaped, the main pipeline 301 includes a horizontal pipe section and two vertical pipe sections, the horizontal pipe section is installed at the bottom of the sink supporting frame 1, and the two vertical pipe sections are respectively close to two non-adjacent side walls of the sink supporting frame 1.
Referring to fig. 2, a regulating valve i 3011, an electromagnetic flowmeter i 3012 and a flow-making pump 4 are arranged on a horizontal pipe section of the main pipeline 301 at intervals, and the flow-making pump 4 is connected with a variable-frequency speed regulator 5.
Referring to fig. 1 or 3, the bottom of the water tank 2 is provided with a test section groove 201 and two ports 202, and the test section groove 201 is located between the two ports 202. The two ports 202 are respectively communicated with two vertical pipe sections of the main pipeline 301, and each port 202 is provided with a honeycomb box 203 and a deflector 204, which are schematically shown in fig. 5 as the honeycomb box 203.
The transparent soil simulation system comprises a tracing coloring agent 6, tracing particles 7, circulating fluid 8 and transparent soil 9, the transparent soil 9 mixed with the tracing coloring agent 6 is filled into the test section groove 201, and the circulating fluid 8 mixed with the tracing particles 7 is injected into the connecting pipeline 3 and the water tank 2. Referring to fig. 1, 3 or 4, a model pile foundation 10 is embedded in the test section groove 201.
Referring to fig. 4, the imaging device includes two laser emitters 11 and two industrial cameras 12 arranged outside the water tank 2.
During testing, the variable-frequency speed regulator 5 drives the flow-making pump 4, the flow-making pump 4 drives the circulating fluid 8 to flow in the connecting pipeline 3 and the water tank 2, each laser emitter 11 forms a speckle section inside the circulating fluid 8 and the transparent soil 9, the two laser emitters 11 form two mutually perpendicular speckle sections, the two industrial cameras 12 respectively shoot the speckle sections formed by the two laser emitters 11, and section pictures are analyzed by using a digital image processing technology.
Example 4:
the main structure of this embodiment is the same as that of embodiment 3, and further, the water tank 2 is made of organic glass.
Example 5:
the main structure of this embodiment is the same as embodiment 4, and further, the model pile foundation 10 is made of organic glass, and the model pile foundation 10 is of a single pile, a pile group-pile cap structure or a large open caisson foundation.
Claims (4)
1. The utility model provides a bridge pile foundation erodees model test device based on transparent soil which characterized in that: the system comprises a circulating water tank system, a transparent soil simulation system and an imaging device;
the circulating water tank system comprises a water tank supporting frame (1), a water tank (2), a connecting pipeline (3), a flow making pump (4) and a variable frequency speed regulator (5), wherein the water tank supporting frame (1) is a rectangular box body with an open upper end and a hollow interior, the water tank (2) is installed at the upper end of the water tank supporting frame (1), and the connecting pipeline (3) is arranged inside the water tank supporting frame (1);
the connecting pipeline (3) comprises a main pipeline (301) and a bypass pipeline (302), the main pipeline (301) is U-shaped, the main pipeline (301) comprises a horizontal pipe section and two vertical pipe sections, the horizontal pipe section is installed at the bottom of the water tank supporting frame (1), and the two vertical pipe sections are respectively close to two non-adjacent side walls of the water tank supporting frame (1);
a regulating valve I (3011), an electromagnetic flowmeter I (3012) and a flow-making pump (4) which are mutually spaced are arranged on a horizontal pipe section of the main pipeline (301), and the flow-making pump (4) is connected with a variable-frequency speed regulator (5);
the bypass pipeline (302) is connected to the main pipeline (301), two ends of the bypass pipeline (302) are communicated with the main pipeline (301), and the regulating valve I (3011) and the electromagnetic flowmeter I (3012) are located between two ends of the bypass pipeline (302); the bypass pipeline (302) is provided with a regulating valve II (3021) and an electromagnetic flowmeter II (3022) which are mutually spaced;
a test section groove (201) and two inlets and outlets (202) are arranged at the bottom of the water tank (2), and the test section groove (201) is positioned between the two inlets and outlets (202); the two inlets and outlets (202) are respectively communicated with two vertical pipe sections of the main pipeline (301), and each inlet and outlet (202) is provided with a honeycomb box (203) and a guide plate (204);
the transparent soil simulation system comprises a tracing coloring agent (6), tracing particles (7), a circulating fluid (8) and transparent soil (9), the transparent soil (9) mixed with the tracing coloring agent (6) is filled into the groove (201) of the test section, and the circulating fluid (8) mixed with the tracing particles (7) is injected into the connecting pipeline (3) and the water tank (2); a model pile foundation (10) is embedded in the test section groove (201);
the imaging device comprises two laser emitters (11) and two industrial cameras (12) arranged outside the water tank (2);
during the test, the variable-frequency speed regulator (5) drives the flow-making pump (4), the flow-making pump (4) drives the circulating fluid (8) to flow in the connecting pipeline (3) and the water tank (2), each laser emitter (11) forms a speckle section inside the circulating fluid (8) and the transparent soil (9), the two laser emitters (11) form two mutually-perpendicular speckle sections, the two industrial cameras (12) respectively shoot section speckles formed by the two laser emitters (11), and a section picture is analyzed by using a digital image processing technology.
2. The transparent soil-based bridge pile foundation erosion model test device of claim 1, which is characterized in that: the water tank (2) is made of organic glass.
3. The transparent soil-based bridge pile foundation erosion model test device of claim 2, wherein: the model pile foundation (10) is made of organic glass, and the model pile foundation (10) is of a single pile, a pile group-bearing platform structure or a large open caisson foundation.
4. A bridge pile foundation erosion model test method based on transparent soil is based on the test device of claim 1, and is characterized in that: the method comprises the following steps:
1) manufacturing the model pile foundation (10);
2) -formulating the circulation fluid (8) and the transparent earth (9); wherein, tracer particles (7) are added into the circulating fluid (8), and tracer coloring agent (6) is added into the transparent soil (9) to distinguish the circulating fluid (10);
3) installing and debugging the circulating water tank system;
4) filling the transparent soil (9) into the groove (201) of the test section to a design height, and embedding the model pile foundation (10) at a design position in the transparent soil (9);
5) slowly injecting a circulating fluid (8) to a designed position into the water tank (2) and the connecting pipeline (3);
6) -arranging and adjusting the laser emitter (11) and the industrial camera (12);
7) starting the flow-making pump (4), the variable-frequency speed regulator (5), the laser emitter (11) and the industrial camera (12), driving the flow-making pump (4) through the variable-frequency speed regulator (5) until the circulating fluid (8) reaches a preset mode, and setting the shooting frequency of the industrial camera (12) to carry out automatic continuous shooting;
8) when the washing of the transparent soil (9) is balanced, the horizontal positions and the heights of the two laser transmitters (11) are adjusted, and an industrial camera (12) shoots section images of the circulating fluid (8) and the transparent soil (9) at different positions;
9) saving the section image shot by the industrial camera (12), closing the flow-making pump (4) and the laser emitter (5), and sorting the test equipment;
10) and processing the section image by using a digital image processing technology to obtain the dynamic evolution of the flushing pit around the model pile foundation (10), the displacement field of the transparent soil (9) and the flow field of the circulating fluid (8).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113027701A (en) * | 2021-02-26 | 2021-06-25 | 中国电建集团华东勘测设计研究院有限公司 | Non-contact dynamic measurement system for offshore wind turbine vibration and erosion test |
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| JP2004036252A (en) * | 2002-07-04 | 2004-02-05 | Geotop Corp | Method for measuring bearing capacity of pile |
| CN103926102A (en) * | 2014-04-30 | 2014-07-16 | 湖南城市学院 | Energy pile-soil load and temperature transmission mechanism model test device and test method |
| CN104343110A (en) * | 2014-10-29 | 2015-02-11 | 中国海洋大学 | In-situ monitoring method and system for scour of soil around bridge pile |
| CN206396814U (en) * | 2017-01-09 | 2017-08-11 | 浙江工业大学 | A kind of novel bridge pile foundation is under water by flushing monitoring device |
| CN108490152A (en) * | 2018-03-09 | 2018-09-04 | 重庆大学 | A kind of transparent soil model experimental rig and its test method of novel analog tunnel excavation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113027701A (en) * | 2021-02-26 | 2021-06-25 | 中国电建集团华东勘测设计研究院有限公司 | Non-contact dynamic measurement system for offshore wind turbine vibration and erosion test |
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