CN107525727A - A kind of Blade fence, which moves in circles, acts on load testing machine and method - Google Patents
A kind of Blade fence, which moves in circles, acts on load testing machine and method Download PDFInfo
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- CN107525727A CN107525727A CN201710945197.XA CN201710945197A CN107525727A CN 107525727 A CN107525727 A CN 107525727A CN 201710945197 A CN201710945197 A CN 201710945197A CN 107525727 A CN107525727 A CN 107525727A
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims abstract description 34
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 230000004087 circulation Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to load test technical field, it is related to a kind of Blade fence and moves in circles effect load testing machine and method, hold-down support is arranged on the top of cylindrical model case, and actuator is horizontally arranged on hold-down support；Connecting rod is connected by fixed hoop with actuator, and connecting rod is fixed on Blade fence model middle, and Blade fence model is placed in cylindrical model case；Servomotor is connected with actuator, pull pressure sensor and displacement transducer are separately mounted in actuator, pull pressure sensor and displacement transducer are connected to form data acquisition and analysis system with computer again after being connected respectively with controller, controller drives actuator to apply cyclic load to Blade fence model with constant rate of speed or constant force during load applies, the horizontal cyclic Cyclic Loading of Practical Project is simulated, forms horizontal cyclic Cyclic Loading loading system；Its is simple in construction, easy to operate, and test data is accurate.
Description
Technical field
The invention belongs to load test technical field, is related to Blade fence load test in a kind of ocean engineering and sets
Standby and test technology, particularly a kind of Blade fence, which moves in circles, acts on load testing machine and method.
Background technology
With the fast development of science and technology and the limitation of land resources, people more sight will throw into marine resources
Utilization in, status of the ocean engineering in the development of the national economy is increasingly improved.The construction such as marine port, science of bridge building
Deep-sea, maximization are turned to by initial shallow sea, miniaturization and complicate development.Marine climate is severe changeable, extra large simultaneously
The complicated of the severe impact of water circulation and marine geo-hazard various all causes weight to marine structure base fixed and safety
Influence.In this case, Blade fence arises at the historic moment as the novel foundation pattern of offshore platform structure, and
Extensive use and popularization are arrived.Blade fence realizes injection using negative pressure, has easy construction, repeatable utilization, makes
The advantages such as valency is low.In Practical Project, Blade fence is primarily subjected to horizontal loading caused by wave action, superstructure
Drawing load caused by gravity load caused by thing and buoyant of sea water, these cyclic loads cause side to Blade fence
To circulation failure and destroy, meanwhile, the generation that soil is filled in Blade fence penetration process can also produce to its bearing capacity characteristics
Raw certain influence, makes the stress of Blade fence in the horizontal direction more complicated, therefore under normal service state, inhales
The loop-carried force characteristic of power formula barrel base has material impact to its stability.It is multiple on Blade fence at present
The research data of bearer properties under cyclic load is less, and existing research majority concentrates on vertical location and theoretical point
Analysis, lacks corresponding test equipment and method.Move in circles the bearer properties research pair of Blade fence under load action
It is significant in the bearer properties research of service phase inner suction formula barrel base, only determine under horizontal whirl-sprayed pile effect
The long-time bearing characteristic of suction-type barrel base, could be preferably the construction of marine structure suction-type barrel base, design
And later stage protection provides theoretical foundation.Therefore, there is an urgent need to design a kind of effect of moving in circles of Blade fence to load examination
Experiment device and test method.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art to exist, on the premise of actual condition is simulated as far as possible,
Design provide the load testing machine that Blade fence bearing characters are studied under a kind of horizontal cyclic reciprocating load and
Method, the device apply the horizontal loading of different size and frequency come simulated waves lotus by Serve Motor Control actuator
Carry, complete the experiment of Blade fence horizontal bearing character under horizontal cyclic reciprocating load.
To achieve these goals, Blade fence of the present invention, which moves in circles, acts on the master of load testing machine
Body structure includes cylindrical model case, hold-down support, Blade fence model, connecting rod, fixed hoop, actuator, drawing
Pressure sensor, displacement transducer, servomotor, controller and computer；Cylindrical model case is made up of upper and lower two parts,
Upper and lower two-part height is respectively 30cm and 70cm, and hold-down support is arranged on the top of cylindrical model case, and actuator is horizontal
On hold-down support；Connecting rod is connected by fixed hoop with actuator, is easy to Blade fence model with start
Device carries out reciprocation cycle motion jointly；Connecting rod is fixed on Blade fence model middle, Blade fence mould
Type is placed in cylindrical model case；Servomotor is connected with actuator, Serve Motor Control actuator with constant strain speed or
Constant stress simulates the horizontal cyclic Cyclic Loading of different frequency；Pull pressure sensor and displacement transducer are separately mounted to make
On dynamic device, pull pressure sensor is used to test Blade fence model by cyclic loading size, displacement sensor
The horizontal displacement change of Blade fence model during being further applied load, and circulated by recording the time that is further applied load
Cyclic Loading and displacement and the relation curve of time, so as to obtain Blade fence in varying level load and frequency
Bearing characters under effect；Pull pressure sensor and displacement transducer are connected to form with computer again after being connected respectively with controller
Data acquisition and analysis system, controller drives actuator with constant rate of speed or constant force to suction type bucket during load applies
Shape basic model applies cyclic load, simulates the horizontal cyclic Cyclic Loading of Practical Project, and composition horizontal cyclic Cyclic Loading adds
Loading system.
Horizontal cyclic Cyclic Loading loading system of the present invention and data acquisition and analysis system apply water by actuator
The flat load that moves in circles, the water for the Blade fence model under load action of being moved in circles by displacement transducer recording level
Flat cyclic shift change, Blade fence model load-bearing under the load action that moves in circles is recorded using pull pressure sensor
Carry size；After loading starts, computer records side horizontal displacement, the suffered horizontal whirl-sprayed pile of Blade fence model
Size and load time, obtain cyclic load-displacement relation curve.
The present invention realize Blade fence move in circles effect load test detailed process be：
(1) cylindrical model case is made, the bottom of cylindrical model case and side wall are cleaned out with brush, prevent cylinder
Residue has an impact to result of the test in shape model casing；Graduation mark is drawn along depth inside cylindrical model case, is easy to cylinder
The application of internal filler；
(2) Blade fence model is placed on cylindrical model case middle, and applies suction and complete heavy pass through；It is heavy
Connecting rod is installed after passing through end, is connected connecting rod with actuator using retainer ring, then connects servomotor, by displacement sensing
Device, pull pressure sensor and controller, computer connect and composition data acquisition analysis system, and test data collection is analyzed
Whether system is intact；
(3) constant strain value or constant force value are set on computers, and Blade fence model is applied by actuator
Horizontal tension and compression load, model engineering stressing conditions of the Blade fence under horizontal cyclic reciprocating load in practice,
Obtain the load-displacement relation curve of the lower Blade fence of horizontal whirl-sprayed pile effect；
(4) change the constant force value of constant strain value or application and repeat aforesaid operations, obtain different size and frequency load is made
With the load-displacement relation curve of lower Blade fence model, the barrel-shaped base of suction type under the load action that moves in circles is realized
The simulation and test of the bearer properties of plinth.
Compared with prior art, its is simple in construction, easy to operate, and test data is accurate by the present invention, applies lotus by recording
The load time obtains the relation curve of move in circles load and displacement and time, and then obtains Blade fence in varying level
Bearing characters under load and frequency effect, it is engineering wave load and the lower suction of different frequency drag effect in practice
The design of formula barrel base provides theoretical foundation.
Brief description of the drawings：
Fig. 1 moves in circles for Blade fence of the present invention acts on the profile of load testing machine.
Fig. 2 moves in circles for Blade fence of the present invention acts on the top view of load testing machine.
Fig. 3 is data acquisition and analysis system principle schematic diagram of the present invention.
Fig. 4 is cyclic load-displacement relation curve map described in the embodiment of the present invention.
Embodiment：
The present invention is described in further detail by way of example and in conjunction with the accompanying drawings.
Embodiment：
Blade fence described in the present embodiment move in circles effect load testing machine agent structure include cylinder
Shape model casing 1, hold-down support 2, Blade fence model 3, connecting rod 4, fixed hoop 5, actuator 6, pressure sensing
Device 7, displacement transducer 8, servomotor 9, controller 10 and computer 11；Cylindrical model case 1 is made up of upper and lower two parts,
Upper and lower two-part height is respectively 30cm and 70cm, and hold-down support 2 is arranged on the top of cylindrical model case 1, actuator 6
It is horizontally arranged on hold-down support 2；Connecting rod 4 is connected by fixed hoop 5 with actuator 6, is easy to Blade fence mould
Type 3 carries out reciprocation cycle motion jointly with actuator 6；Connecting rod 4 is fixed on the middle of Blade fence model 3, suction
Formula barrel base model 3 is placed in cylindrical model case 1；Servomotor 9 is connected with actuator 6, and servomotor 9 controls actuator
6 simulate the horizontal cyclic Cyclic Loading of different frequency with constant strain speed or constant stress；Pull pressure sensor 7 and displacement
Sensor 8 is separately mounted in actuator 6, and pull pressure sensor 7 is used to test the suffered circulation load of Blade fence model 3
Lotus size, the horizontal displacement change of Blade fence model 3 during the measurement of displacement transducer 8 is further applied load, and pass through
Record time that is further applied load obtains the relation curve of load and displacement and time of moving in circles, so as to obtain Blade fence
Bearing characters under varying level load and frequency effect；Pull pressure sensor 7 and displacement transducer 8 respectively with control
Device 10 is connected to form data acquisition and analysis system with computer 11 again after being connected, controller 10 drives start during load applies
Device 6 applies cyclic load with constant rate of speed or constant force to Blade fence model 3, and the level for simulating Practical Project is followed
Ring Cyclic Loading, form horizontal cyclic Cyclic Loading loading system.
The present embodiment realize Blade fence move in circles effect load test detailed process be：
(1) cylindrical model case 1 is made, the bottom of cylindrical model case 1 and side wall are cleaned out with brush, prevent from justifying
Residue has an impact to result of the test in tubular model casing 1；Graduation mark is drawn along depth inside cylindrical model case 1, just
In the application of filler in cylinder；
(2) Blade fence model 3 is placed on the middle of cylindrical model case 1, and applies suction and complete heavy pass through；
Connecting rod 4, is connected by heavy installation connecting rod 4 after passing through end using retainer ring 5 with actuator 6, then connects servomotor 9, by position
Displacement sensor 8, pull pressure sensor 7 is connected with controller 10, computer 11 and composition data acquisition analysis system, and tests
Whether data acquisition and analysis system is intact；
(3) certain constant strain value or constant force value (such as 16N) are set on computer 11, by actuator 6 to suction type bucket
Shape basic model 3 applies the horizontal tension and compression load of certain frequency (such as 0.1Hz, 1000 times circulation), model engineering suction in practice
Stressing conditions of the formula barrel base under horizontal cyclic reciprocating load, it is barrel-shaped to obtain the lower suction type of horizontal whirl-sprayed pile effect
The load-displacement relation curve on basis；
(4) change the constant force value of constant strain value or application and repeat aforesaid operations, obtain different size and frequency load is made
With the load-displacement relation curve of lower Blade fence model 3, the barrel-shaped base of suction type under the load action that moves in circles is realized
The simulation and test of the bearer properties of plinth, Fig. 4 represent to apply displacement-load song that constant load 8.5N lasts 1000 circulations
Line.
Claims (2)
- The effect load testing machine 1. a kind of Blade fence moves in circles, it is characterised in that agent structure includes cylindrical shape Model casing, hold-down support, Blade fence model, connecting rod, fixed hoop, actuator, pull pressure sensor, displacement pass Sensor, servomotor, controller and computer；Cylindrical model case is made up of upper and lower two parts, upper and lower two-part height Respectively 30cm and 70cm, hold-down support are arranged on the top of cylindrical model case, and actuator is horizontally arranged on hold-down support； Connecting rod is connected by fixed hoop with actuator, is easy to Blade fence model to carry out reciprocation cycle jointly with actuator Motion；Connecting rod is fixed on Blade fence model middle, and Blade fence model is placed in cylindrical model case It is interior；Servomotor is connected with actuator, and Serve Motor Control actuator simulates difference with constant strain speed or constant stress The horizontal cyclic Cyclic Loading of frequency；Pull pressure sensor and displacement transducer are separately mounted in actuator, pressure sensing Device is used to test Blade fence model by cyclic loading size, suction during displacement sensor is further applied load Formula barrel base model horizontal displacement change, and by record be further applied load the time obtain move in circles load and displacement and when Between relation curve, so as to obtain bearing characters of the Blade fence under varying level load and frequency effect； Pull pressure sensor and displacement transducer are connected to form data acquisition and analysis system with computer again after being connected respectively with controller, Controller is driven actuator to be applied with constant rate of speed or constant force to Blade fence model and followed during load applies Ring load, the horizontal cyclic Cyclic Loading of Practical Project is simulated, form horizontal cyclic Cyclic Loading loading system.
- 2. it is a kind of using device as claimed in claim 1 realize Blade fence move in circles effect load test side Method, it is characterised in that detailed process is：(1) cylindrical model case is made, the bottom of cylindrical model case and side wall are cleaned out with brush, prevent cylindrical shape mould Residue has an impact to result of the test in molding box；Graduation mark is drawn along depth inside cylindrical model case, is easy in cylinder The application of filler；(2) Blade fence model is placed on cylindrical model case middle, and applies suction and complete heavy pass through；It is heavy to pass through knot Connecting rod is installed after beam, is connected connecting rod with actuator using retainer ring, then connects servomotor, by displacement transducer, is drawn Pressure sensor is connected with controller, computer and composition data acquisition analysis system, and test data collection analysis system It is whether intact；(3) constant strain value or constant force value are set on computers, Blade fence model are applied by actuator horizontal Tension and compression load, model engineering stressing conditions of the Blade fence under horizontal cyclic reciprocating load in practice, obtain The load-displacement relation curve of the lower Blade fence of horizontal whirl-sprayed pile effect；(4) change the constant force value of constant strain value or application and repeat aforesaid operations, obtain under different size and frequency load action The load-displacement relation curve of Blade fence model, realize Blade fence under the load action that moves in circles The simulation and test of bearer properties.
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| CN201710945197.XA CN107525727A (en) | 2017-10-12 | 2017-10-12 | A kind of Blade fence, which moves in circles, acts on load testing machine and method |
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| CN201710945197.XA CN107525727A (en) | 2017-10-12 | 2017-10-12 | A kind of Blade fence, which moves in circles, acts on load testing machine and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490863A (en) * | 2018-04-02 | 2018-09-04 | 青岛理工大学 | Offshore wind wave dynamic loading test device and method |
| CN110761341A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Horizontal and vertical load loading test device and method for offshore pile cap foundation |
| CN111155569A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | Test device and test method capable of simulating installation and cyclic loading process of suction barrel in ocean deepwater environment |
| CN113125308A (en) * | 2021-03-18 | 2021-07-16 | 同济大学 | Test system for inducing osmotic corrosion phenomenon by suction barrel penetration and upward pulling |
| CN115200815A (en) * | 2022-05-31 | 2022-10-18 | 天津城建大学 | Dynamic response testing device and testing method for seabed suction type three-barrel foundation |
| CN115352852A (en) * | 2022-09-11 | 2022-11-18 | 南通铁建建设构件有限公司 | Prefabricated component assembly line is with turning to reciprocal system of circulation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490863A (en) * | 2018-04-02 | 2018-09-04 | 青岛理工大学 | Offshore wind wave dynamic loading test device and method |
| CN110761341A (en) * | 2019-10-25 | 2020-02-07 | 中铁第四勘察设计院集团有限公司 | Horizontal and vertical load loading test device and method for offshore pile cap foundation |
| CN111155569A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | Test device and test method capable of simulating installation and cyclic loading process of suction barrel in ocean deepwater environment |
| CN113125308A (en) * | 2021-03-18 | 2021-07-16 | 同济大学 | Test system for inducing osmotic corrosion phenomenon by suction barrel penetration and upward pulling |
| CN113125308B (en) * | 2021-03-18 | 2022-08-09 | 同济大学 | Test system for inducing osmotic corrosion phenomenon by suction barrel penetration and upward pulling |
| CN115200815A (en) * | 2022-05-31 | 2022-10-18 | 天津城建大学 | Dynamic response testing device and testing method for seabed suction type three-barrel foundation |
| CN115352852A (en) * | 2022-09-11 | 2022-11-18 | 南通铁建建设构件有限公司 | Prefabricated component assembly line is with turning to reciprocal system of circulation |
| CN115352852B (en) * | 2022-09-11 | 2023-10-03 | 南通铁建建设构件有限公司 | Steering circulation reciprocating system for prefabricated part assembly line |
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Application publication date: 20171229 |