CN104727354B - The test system of simulation loop load lower plate anchor limit dynamic bearing capacity - Google Patents
The test system of simulation loop load lower plate anchor limit dynamic bearing capacity Download PDFInfo
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- CN104727354B CN104727354B CN201510086665.3A CN201510086665A CN104727354B CN 104727354 B CN104727354 B CN 104727354B CN 201510086665 A CN201510086665 A CN 201510086665A CN 104727354 B CN104727354 B CN 104727354B
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000004088 simulation Methods 0.000 title description 13
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 56
- 238000006073 displacement reaction Methods 0.000 claims abstract description 44
- 239000002689 soil Substances 0.000 claims abstract description 41
- 239000011148 porous material Substances 0.000 claims abstract description 23
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- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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- 229910001220 stainless steel Inorganic materials 0.000 description 3
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- 238000004804 winding Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000005336 safety glass Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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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
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Abstract
本发明提供一种模拟循环载荷下板锚极限动承载力的测试系统，包括：板锚模型、用于将板锚模型的锚胫限定为垂直于床面移动的十字支撑架、循环载荷加载装置和测量装置；循环载荷加载装置用于向锚胫施加循环载荷，包括将电机输入的匀速转动转换为模拟正弦的往复转动的传动装置、将往复转动转化为指定常荷载与模拟正弦荷载叠加的循环荷载位移载荷转化装置和用于根据板锚模型的位移调整绳索的长度，使循环载荷的幅值不因多周期的累积板锚模型位移而发生衰减的位移修正装置。本方案能有效控制循环载荷的幅值、获得循环拉拔过程中板锚周围土体的孔隙水压，直接观测板锚及其周围土体的破坏过程，对循环载荷下板锚的极限承载性能进行合理评估。
The invention provides a test system for simulating the ultimate dynamic bearing capacity of a plate anchor under cyclic loads, comprising: a plate anchor model, a cross support frame for limiting the anchor shin of the plate anchor model to move perpendicular to the bed surface, and a cyclic load loading device And measuring device; the cyclic load loading device is used to apply cyclic load to the anchor shin, including the transmission device that converts the uniform rotation input by the motor into simulated sinusoidal reciprocating rotation, and converts the reciprocating rotation into a specified constant load and simulated sinusoidal load. The load-displacement load conversion device and the displacement correction device are used to adjust the length of the rope according to the displacement of the plate anchor model, so that the amplitude of the cyclic load does not attenuate due to the multi-period cumulative plate anchor model displacement. This scheme can effectively control the amplitude of the cyclic load, obtain the pore water pressure of the soil around the plate anchor during the cyclic drawing process, directly observe the failure process of the plate anchor and its surrounding soil, and have a good understanding of the ultimate bearing capacity of the plate anchor under cyclic loads. Make a reasonable assessment.
Description
Technical field
The present invention relates to ocean engineering technology, marine soil mechanics and ocean foundation engineering technology, the test system of especially a kind of simulation loop load lower plate anchor limit dynamic bearing capacity.
Background technology
Plate anchor, as the mooring foundation (including pull-type plate anchor, novel normal direction load anchor, suction penetration type plate anchor) of a kind of novel deep sea engineering structure, need to embed in seabed soil certain depth to provide resistance to plucking load-carrying properties. Its bearing capacity can reach more than 100 times of anchor own wt, have simultaneously material economize, easily operation, easily storage, recyclable and the advantage such as reuse, the mooring location in large-scale floating ocean platform, floating-type offshore wind power field etc. receives significant attention.
The marine site extremely complex and severe owing to being in marine environmental conditions, plate anchor and ocean soil about are inevitably subject to the circulation drawing effect caused by wind, wave, stream etc. directly or indirectly. Ocean soil is under Cyclic Load, and its dynamic trait will produce a series of differentiation, will certainly cause the great variety of the load-carrying properties of plate anchor. Therefore, plate anchor Ballistic Limit Velocity under cyclic loading will dominate the design of plate anchor and whole life span thereof.
Reasonable assessment to cyclic loading limit inferior load-carrying properties, it is necessary to the circulation drawing process of plate anchor is carried out feasible simulation, to obtaining plate anchor and the dynamic response of ambient ocean soil thereof. Currently for the experimental study of plate anchor loop-carried characteristic, only have the test of a small amount of conventional model and centrifuge test, and there is following critical problem: the amplitude of (1) cyclic loading is difficult to remain constant; (2) it is difficult to obtain the pore water pressure of plate anchor surrounding soil in circulation drawing process;(3) destructive process of plate anchor and surrounding soil thereof cannot directly observation etc.
Summary of the invention
The present invention provides the test system of a kind of simulation loop load lower plate anchor limit dynamic bearing capacity, for overcoming defect of the prior art, effectively control the amplitude of cyclic loading, obtain the pore water pressure of plate anchor surrounding soil in circulation drawing process, the destructive process of direct observation board anchor and surrounding soil thereof, carries out reasonable assessment to the Ballistic Limit Velocity of cyclic loading lower plate anchor.
The present invention provides the test system of a kind of simulation loop load lower plate anchor limit dynamic bearing capacity, including:
Plate anchor model, including top panel, lower panel, anchor shin, removably connects between wherein said top panel and lower panel; Described top panel and lower panel are embedded under bed surface;
For being defined to be perpendicular to the cross supporting frame that described bed surface moves by the anchor shin of described plate anchor model, being fixed on soil box, described anchor shin connects top panel and described cross supporting frame;
Cyclic loading charger, for applying cyclic loading to the described anchor shin of the water surface exposed above described bed surface, including:
Actuating device, is converted to the reciprocating rotation of analog sine by the uniform rotation that motor inputs; Input is connected with electric machine main shaft, and outfan is connected with displacement load reforming unit;
Described displacement load reforming unit, is converted into the cyclic load specifying normal load with analog sine load superposition by above-mentioned reciprocating rotation; Including spool, loading spring and balancing weight; Described spool central shaft is connected with described transmission output; Described balancing weight passes through rope winding in spool; Described loading spring one end is by rope around being located in described spool, and the other end is connected on described anchor shin;
Displacement correction device, for the length of the adjustment of displacement rope according to described plate anchor model so that cyclic loading does not decay because of the accumulation plate anchor model displacement of multicycle; Including unilateral bearing, described spool includes described spool central shaft and the urceolus being sheathed on described spool central shaft, and described unilateral bearing is arranged between described spool central shaft and urceolus;
Measurement apparatus, including for measure be applied on described plate anchor model the pulling force sensor of cyclic loading pulling force, for measuring described plate anchor model at the laser displacement sensor of vertical bed surface direction displacement, for measuring the sensor for pore water pressure of described plate anchor model pore pressure change between top panel with lower panel under cyclic loading and for carrying out the work of the sensor Tong Bus triggering and gathering the multi-channel data synchronous transmitted.
Wherein, described actuating device includes the first actuating device and the second actuating device, and wherein, the uniform rotation of input is converted to reciprocating translatory by described first actuating device; The reciprocating translatory of input is converted to reciprocating rotation by the second actuating device.
Further:
Described first actuating device includes crank disc, connecting rod and slide block;
Described crank disc center is fixing with described electric machine main shaft to be connected;
Described crank disc is provided with at least one axis hole;
Described connecting rod one end is hinged with described second transmission input, and the other end is hinged with described axis hole;
Described slide block is fixed on described second transmission input;
Being provided with horizontal linear guide rail in the frame be fixed on soil box, described slide block can at described horizontal linear slide on rails.
Further:
Described second actuating device includes rack and pinion;
Described tooth bar one end is connected with described connecting rod one end, and described tooth bar engages with described gear;
The central shaft of described gear is connected with described spool central shaft driven or fixing connection;
Described slider bottom has the chute coordinated with described horizontal linear guide rail, and described slider top is connected with bottom described tooth bar.
Particularly:
The rope being connected between described spool and loading spring is wrapped at least one fixed pulley.
Wherein:
Described pulling force sensor is arranged on the rope connected between described loading spring and plate anchor;
Described laser displacement sensor is arranged on described soil box;
Described sensor for pore water pressure is arranged between described top panel and lower panel.
Particularly:
Also include the stem for described sensor threading; Stem is arranged on described top panel;
Described cross supporting frame includes standpipe and is arranged on the cross around described standpipe in decussation, and described stem is located in described standpipe, and and between described standpipe, there is gap;
Four angles of the described anchor shin described top panel of traverse are both connected on described cyclic loading charger after being connected with the four of described cross end points respectively.
The test system of simulation loop load lower plate anchor limit dynamic bearing capacity provided by the invention, the plate anchor model to given buried depth can be realized by cyclic loading charger, it is applied to sizing pretension and the CYCLIC LOADING of controlled load amplitude and frequency, plate anchor in simulation loop drawing process and soil body dynamic interaction the dynamic ultimate bearing capacity determining plate anchor, relative to prior art, can effectively control the amplitude of cyclic loading, obtain the pore water pressure of plate anchor surrounding soil in circulation drawing process, it is easy to the destructive process of direct observation board anchor and surrounding soil thereof, the Ballistic Limit Velocity of cyclic loading lower plate anchor is carried out reasonable assessment.
Accompanying drawing explanation
Fig. 1 is the front view of the test system of the simulation loop load lower plate anchor limit dynamic bearing capacity of the embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the front view of cyclic loading charger in the embodiment of the present invention;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the sectional view of plate anchor model in the embodiment of the present invention;
Fig. 6 is the top view of top panel in the embodiment of the present invention;
Fig. 7 is along A-A to sectional view in Fig. 6;
Fig. 8 is the top view of lower panel in the embodiment of the present invention;
Fig. 9 is along B-B to sectional view in Fig. 6.
Detailed description of the invention
As shown in figs 1-9, the embodiment of the present invention provides the test system of a kind of simulation loop load lower plate anchor limit dynamic bearing capacity, including: plate anchor model 1, for being defined to be perpendicular to cross supporting frame 2, cyclic loading charger 3 and the measurement apparatus that bed surface moves by the anchor shin of plate anchor model;
Referring to Fig. 5-9, plate anchor model 1, including top panel 11, lower panel 12, anchor shin 13, wherein removably connect between top panel 11 and lower panel 12; Top panel 11 and lower panel 12 are embedded in bed surface 20 times;
Referring to Fig. 1, Fig. 2, for being defined to be perpendicular to the cross supporting frame 2 that bed surface 20 moves by plate anchor model, being fixed on soil box 10, anchor shin 13 connects top panel 11 and cross supporting frame 2;
Referring to Fig. 3, Fig. 4, cyclic loading charger 3, for applying cyclic loading to the anchor shin 13 of the water surface 30 exposed above bed surface 20, including actuating device 31, displacement load reforming unit 32 and displacement correction device 33;
Actuating device 31, is converted to the reciprocating rotation of analog sine by the uniform rotation that motor 31c inputs; Input is connected with motor 31c main shaft, and outfan is connected with displacement load reforming unit 32;Including realizing being converted to uniform rotation all mechanical mechanisms of straight reciprocating motion;
Actuating device 31 includes the first actuating device 31a and the second actuating device 31b, and wherein, the uniform rotation of input is converted to reciprocating translatory by the first actuating device 31a; The reciprocating translatory of input is converted to reciprocating rotation by the second actuating device 31b; Such as bindiny mechanism; The reciprocating translatory of the constant cycle of input is converted to the reciprocating rotation of constant cycle by the second actuating device;
As the preferred version of the first actuating device, the first actuating device 31a includes crank disc 311a, connecting rod 312a and slide block 313a; Crank disc center E is fixing with motor 31c main shaft to be connected; Crank disc 311a is provided with at least one axis hole 311b; Connecting rod 312a one end is hinged with the second actuating device 31b input, and the other end is hinged with axis hole 311b; Slide block 313a is fixed on the second actuating device 31b input; Being provided with horizontal linear guide rail 50 in the frame 40 be fixed on soil box 10, slide block 313a can slide on horizontal linear guide rail 50.
As the preferred version of the second actuating device, the second actuating device 31b includes tooth bar 311c and gear 312b; Tooth bar 311c one end is connected with connecting rod 312a one end, and tooth bar 311c engages with gear 312b; The central shaft of gear 312b is connected with spool 321 central shaft driven or fixing connection; Having the chute coordinated with horizontal linear guide rail 50 bottom slide block 313a, slide block 313a top is connected with bottom tooth bar 311c; Connecting rod 312a is connected with tooth bar 311c by a connection piece 313, and connector 313 one end is hinged with connecting rod 312a, and the other end is fixing with tooth bar 311c to be connected;
Motor 31c is adjustable speed motor, it is provided that the dynamic load(loading) of adjustable frequency provides power for whole loading system. First actuating device constitutes slider-crank mechanism, and the uniform rotation of motor 31c can be converted into the reciprocating translatory of constant cycle. Second actuating device is pinion and rack, and reciprocating translatory is converted into reciprocating rotation. In work, the rotation period of motor 31c is equal with the cyclic loading cycle, it may be achieved the quantitative adjustment to the CYCLIC LOADING cycle. Crank disc 311a, containing multiple axis hole 311b, is connected with connecting rod 312a, by the hole heart from regulating reciprocating stroke. Drive disk assembly installs rolling bearing to reduce power transmission loss in coupling part, and axle and the non-interference fit of bearing, with easy disassembly, can change rapidly the axis hole of crank disc. Horizontal linear guide rail 50 and tooth bar 311c fix, and for retraining rotation and the displacement on vertical direction of tooth bar 311c, make tooth bar 311c non-resistance in the horizontal direction slide simultaneously.
Displacement load reforming unit 32, is converted into the cyclic load specifying normal load with analog sine load superposition by above-mentioned reciprocating rotation; Including spool 321, loading spring 322 and balancing weight 323; Spool 321 central shaft is connected with transmission output (being the central shaft of gear 312b here); Balancing weight 323 passes through rope winding in spool 321; Loading spring 322 one end is by rope winding in spool 321, and the other end is connected on anchor shin 13;
The uniform rotation of crank disc 311a is converted to the sinusoidal reciprocating translatory of tooth bar 311c by the second actuating device 31b by connecting rod 312a and horizontal linear guide rail 50; This reciprocating translatory is then converted into the reciprocating rotation of the spool 321 being connected with gear 312b central shaft driven by gear 312b; Spool 321 connects loading spring 322 via heaving pile, it is achieved the CYCLIC LOADING to plate anchor model.The adjustment of the movement travel of tooth bar 311c can be achieved by the position, connecting shaft hole 311b hole of change crank disc 311a and connecting rod 312a, moves back and forth each time and achieves a loaded cycle to plate anchor;
Displacement correction device 33, for the length of the adjustment of displacement rope according to plate anchor model 1 so that cyclic loading does not decay because of the accumulation plate anchor model displacement of multicycle; Including unilateral bearing 331, spool central shaft and central gear axis are integrated setting in the present embodiment; Spool 321 includes spool central shaft 321a and the urceolus 321b being sheathed on spool central shaft 321a, and unilateral bearing 331 is arranged between spool central shaft 321a and 321b urceolus; As the extension of connected mode, spool central shaft can be fixed with central gear axis and be connected, it is also possible to is in transmission connection by key or other accessory, does not all limit at this, the rotating torque of gear can be passed to spool as long as meeting.
The displacement that model pipeline produces along loading direction can be revised by spool inside and outside shaft design automatically, with issuable relaxing of spring problem after elimination repeatedly circulation.
Spool outer shaft and urceolus 321b are wound around two strand ropes, connect loading spring 322 and balancing weight 323 respectively. Add/uninstall process in, spool central shaft drive urceolus 321b reciprocating rotation. Further, urceolus 321b drives loading spring 322, by the relaxation of loading spring 322, reciprocating rotation is converted into cyclic load, and acts on loading object plate anchor model 1. Can the size of the normal load component of quantitative adjusting by changing balancing weight 323; By changing the stiffness factor of loading spring 322, can the amplitude of quantitative adjusting sine load component;
As it is shown on figure 3, spool central shaft and gear are fixed, work makes reciprocating rotation with gear. According to the transport characteristics of outer shaft in spool, when there is displacement along loading direction in plate anchor model, state has just been started at uninstall process, spool central axis followed by urceolus, and stop operating in a moment subsequently, the hauling rope that this mechanism will automatically reclaim with this displacement equal length under the effect of balancing weight, to prevent the lax of loading spring that this displacement causes to be accumulated to subsequent cycle. Under the effect of unilateral bearing, urceolus can only rotate clockwise by spool central shaft relatively, and namely opposite direction counterclockwise then brakes.
The reciprocating rotation of spool is converted into the cyclic load specifying normal load with near sinusoidal load superposition by displacement load reforming unit, and exports to loading object. Utilize balancing weight self gravitation balance to eliminate the displacement that plate anchor produces in CYCLIC LOADING process, maintain the constant of cyclic loading amplitude.
Measurement apparatus, including for measure be applied to cyclic loading pulling force on plate anchor model 1 pulling force sensor 41, for measure plate anchor model vertical bed surface 20 direction displacement laser displacement sensor 42, for measure plate anchor model 1 under cyclic loading between top panel 11 with lower panel 12 pore pressure change sensor for pore water pressure 43 and for the work of the sensor is carried out Tong Bus trigger and gather transmit multi-channel data synchronous 44; Pulling force sensor 41 is arranged on the rope connected between loading spring 322 and plate anchor model 1; Laser displacement sensor 42 is arranged in the frame 40 being fixed on soil box; Sensor for pore water pressure 43 is arranged above between plate 11 and lower panel 12.
Top panel 11 is provided for the stem 14 of sensor (including pulling force sensor 41, laser displacement sensor 42 and sensor for pore water pressure 43) threading;Cross supporting frame 2 includes standpipe 22 and the cross 21 being arranged on around standpipe 22 in decussation, and stem 14 is arranged in standpipe 22, and and between standpipe 22, there is gap; Anchor shin 13 is connected on cyclic loading charger 3 through four angles of top panel 11 respectively together with converging at after four end points connections of cross 21;
The rope being connected between spool 321 and loading spring 322 is wrapped at least one fixed pulley 324. Fixed pulley 324 is fixed in frame 40, applies vertical load by fixed pulley 324 to anchor shin 13, and the position that cyclic loading charger can be arranged is relatively low.
The loading system of simulation loop load lower plate anchor limit dynamic bearing capacity provided by the invention, loading procedure is as follows:
Adjustable speed motor provides power for whole loading system, drive the crank disc uniform rotation being in transmission connection with electric machine main shaft, driving horizontal linear guide rail to move back and forth via connecting rod, horizontal linear guide rail is connected with tooth bar, rotates via gear driven spool periodic reverse. The spool of reciprocating rotation by mooring cable is connected with loading spring realization to brassboard anchor model etc. amplitude power control CYCLIC LOADING.
In CYCLIC LOADING process, the change of load frequency can be achieved by adjustment motor; The change of load amplitude is achieved by regulating the Kong Weiyu connecting rod connection of the not coaxial aperture on crank disc; Simultaneously for the CYCLIC LOADING that power controls, the rigidity also by loading spring that regulates of its amplitude is achieved; Balancing weight is connected with spool, and when mooring cable is lax, balancing weight then can be activated; Each drive disk assembly is connected by axle and bearing, reduces the loss of transmission, axle and the non-interference fit of bearing, easy disassembly, improves work efficiency. For the prestrain that analog board anchor existed before cyclic loading, can be achieved by the gravity of adjustment balancing weight.
Plate anchor model will be embedded in seabed soil, and in circulation drawing process, its upper and lower surface will produce different aperture hydraulic pressure, and the generation of pore water pressure directly affects the load-carrying properties of plate anchor with dissipation. For accurate simulation and measure to pore water pressure, mould plate anchor adopts split-type design, and upper and lower plate face is detachable with assembling, it is simple to embedding sensor for pore water pressure; In order to reduce the end resistance that anchor shin brings, circulating the stressing conditions of mould plate anchor in drawing process thus being accurately measured, anchor shin will be connected with heaving pile more straight up after passing soil face.
Mould plate anchor upper face is connected by sunk screw with lower face, is embedded in soil box system; Anchor shin connecting plate anchor model upper face also passes seabed soil straight up, is connected with heaving pile; Sensor for pore water pressure is embedded between plate anchor upper face and lower panel, and its holding wire is connected with synchronous after being drawn by stem, thus avoiding directly contacting with the soil body and causing the abrasion of sensor in circulation drawing process so that losing efficacy.
Soil bin is mainly made of stainless steel, and configures test section glass cell wall, lays sand and is used for simulating soil bed, sand has water layer, is used for simulating ocean current in soil box; Soil box be whole assay device be located platform, this main platform body is made of stainless steel. Test section sidewall is made up of safety glass, it is simple to observe and data board anchor is in circulation drawing process, the deformation failure of the soil body and failure mode about. The dynamic response that this part to realize plate anchor is circulated in drawing process is measured and is gathered. Including plate anchor vertical displacement, the real-time synchronization of suffered cyclic loading and about simulation seabed soil pore water pressure is measured.
Soil box main body is stainless steel, and loading system is seated in soil box main body, and safety glass sidewall is positioned at test section.I-steel supports beam and is supported by channel column, is positioned at above soil box, is circulated, by plate anchor, the vertical load produced in drawing process in order to directly to bear. Sensor for pore water pressure is embedded in soil certain depth with mould plate anchor, and its holding wire is drawn by stem, measures the pore water pressure that in plate anchor circulation drawing process, seabed soil produces in plate anchor upper and lower surface and responds; Pulling force sensor connects loading spring along heaving pile under water, measures the cyclic loading being applied on plate anchor; Laser displacement sensor is fixed on soil box, in order to the vertical displacement that assay plate anchor produces in circulation drawing process; Cross supporting frame is fixed in frame, and standpipe is perpendicular to bed surface, and stem passes bed surface with the anchor shin of plate anchor model on vertical direction; Each sensing element signal wire joint is connected with multichannel synchronousing collection system, it is achieved include the synchro measure of the dynamic responses such as pore pressure, displacement, pulling force.
Operating procedure is as follows:
1. debugging CYCLIC LOADING system:
(1) according to the size of plate anchor model and buried depth, it is determined that the amplitude size of cyclic loading.
(2) on crank disc, suitable position, hole connecting rod is selected.
(3) according to plate anchor model size and spring reciprocating stroke, the loading spring of proper stiffness is selected.
(4) according to the required often magnitude of load of experiment, balancing weight is adjusted.
2. prepare sea bed and installing plate anchor model:
(1) assembled plate anchor model, and embedding sensor for pore water pressure.
(2) by the buried depth of requirement of experiment, embedding plate anchor model, and flatten bed surface.
(3) according to plate anchor model buried depth, loading spring length, regulate and support depth of beam.
(4) at the fixing fixed pulley of the surface crossbeam of the embedding position of plate anchor model, loading system the heaving pile drawn is walked around fixed pulley, pulling force sensor, loading spring are installed successively, connect anchor shin.
(5) treat that the soil body completes consolidation.
3. plate anchor limit dynamic bearing capacity measures process:
(1) CYCLIC LOADING system is started. Open motor, start plate anchor model is implemented CYCLIC LOADING, and open multichannel collecting system simultaneously.
(2) according to requirement of experiment (loading cycle, frequency etc.), persistent loop drawing process, until experiment terminates, closes motor and acquisition system.
(3) reclaim plate anchor model, disconnect the connection with mooring cable, loading spring, pulling force sensor etc. successively, complete this test.
Claims (7)
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| CN113720589B (en) * | 2021-07-28 | 2022-10-14 | 河海大学 | An experimental system device for mooring rope engineering |
| CN114216788B (en) * | 2021-12-21 | 2024-04-12 | 中国科学院力学研究所 | Quasi-static loading device of anchoring structure in soil with controllable driving torque |
| CN114548844B (en) * | 2022-04-27 | 2022-07-08 | 天津大学 | Offshore oil and gas field power grid wind power bearing capacity evaluation method considering electrical coupling constraint |
| CN114894624B (en) * | 2022-07-14 | 2022-11-01 | 浙大城市学院 | Drawing force measurement test device and method based on marine pipeline group anchor effect |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201707197U (en) * | 2010-05-11 | 2011-01-12 | 浙江大学 | Installation and complex loading module test platform of novel deep sea mooring foundation |
| CN104075866A (en) * | 2014-06-26 | 2014-10-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test wave cyclic loading simulating device and testing method thereof |
| CN104155190A (en) * | 2014-08-08 | 2014-11-19 | 同济大学 | Test system for simulation of long-term cyclic loading effect |
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| KR101207199B1 (en) * | 2012-06-11 | 2012-12-03 | 재단법인 포항산업과학연구원 | Horizontal cyclic loading device based on offshore wind power substructure for model experiment by using cam structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201707197U (en) * | 2010-05-11 | 2011-01-12 | 浙江大学 | Installation and complex loading module test platform of novel deep sea mooring foundation |
| CN104075866A (en) * | 2014-06-26 | 2014-10-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test wave cyclic loading simulating device and testing method thereof |
| CN104155190A (en) * | 2014-08-08 | 2014-11-19 | 同济大学 | Test system for simulation of long-term cyclic loading effect |
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