CN109724864B - It tests the more loads of ocean engineering pile foundation-soil dynamic response and couples loading device - Google Patents
It tests the more loads of ocean engineering pile foundation-soil dynamic response and couples loading device Download PDFInfo
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- CN109724864B CN109724864B CN201910063922.XA CN201910063922A CN109724864B CN 109724864 B CN109724864 B CN 109724864B CN 201910063922 A CN201910063922 A CN 201910063922A CN 109724864 B CN109724864 B CN 109724864B
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Abstract
The invention discloses ocean engineering pile foundation plinth loading device under a kind of horizontal, vertical cyclic load and Impact Load, ocean engineering pile foundation plinth-soil dynamic response experimental rig and test method under especially more load couplings.The experimental rig includes cuboid model casing, model steel-pipe pile, fixed bracket, horizontal whirl-sprayed pile loading device, vertical cyclic load loading device and horizontal impact load loading device.The present invention considers the status under loading of ocean engineering pile foundation Life cycle, horizontal whirl-sprayed pile, vertical cyclic load, horizontal impact load can not only simultaneously or separately be applied, the reduction of soil around pile rigidity caused by ocean engineering pile foundation plinth dynamic response and pile-soil interaction rule under more load couplings can also be obtained, is of great significance to ocean engineering Design of Foundation, construction and maintenance.
Description
Technical field
The invention belongs to ocean engineering foundation engineering field, it is related to a kind of horizontal, vertical cyclic load and impact load is made
With lower ocean engineering pile foundation plinth loading device and test method, ocean engineering pile foundation plinth-soil under especially more load couplings
The experimental rig and test method of dynamic response.
Background technique
In recent years, as the proposition of " ocean power " strategic idea, ocean engineering are rapidly developed, pile foundation is in coastal waters
In the ocean engineerings such as blower, offshore drilling platform, port and pier, bridge spanning the sea using more and more extensive.
Ocean engineering pile foundation working environment is complicated, stress form multiplicity, as the supporting member of superstructure, in receiving
Portion's structure reaches the gravity load at stake top end, while the long term by horizontal whirl-sprayed piles such as wind, waves.In addition, at port
The fields such as mouth harbour, bridge spanning the sea, the vertical circulation lotus that pile foundation is also generated by top traffic and mobile working unit
Load effect.Dock structure also suffers from the impact load effect of ice load and ship during operation.
Relative to static load, performance of the pile foundation under cyclic load is different, and cyclic load can be broken
Bad pile peripheral earth it is structural, reduce soil strength, while increase the pore water pressure in pile peripheral earth, effective stress drop
It is low.The comprehensive function of the two leads to soil body stiffness degradation, and pile peripheral earth plastic strain and accumulated deformation increase, bearing capacity of pile foundation drop
It is low.Existing research shows that compared to simple subprogram load, pile foundation is often easier broken by unstability under the conditions of Combined Loading
It is bad.
And continue to use the Design of Foundation method under single static load effect in corresponding engineering design mostly at present, with the limit
Bearing capacity carries out pile foundation under cyclic load as Con trolling index, by the method for greatly improving bearing capacity safety stock
Design, do not account for multiple cyclic loads coupling and cyclic load under pile peripheral earth rigidity caused by pile-soil interaction
It weakens, this design method can not be predicted deformation is added up caused by cyclic load, also unpredictable multiple cyclic loads
Bearing capacity of pile foundation Weakening degree caused by coupling.
The more load coupling cycles of ocean engineering pile foundation-soil dynamic response can be tested therefore, it is necessary to develop one kind to add
It carries and sets, it is rigid to study soil around pile caused by ocean engineering pile foundation plinth dynamic response and pile-soil interaction under more load couplings
Degree reduction rule, is of great significance to ocean engineering basic engineering and maintenance.
Summary of the invention
In view of this, the present invention provides a kind of couplings of test ocean engineering pile foundation-soil dynamic response more loads to add
It carries and sets.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of test ocean engineering pile foundation-soil dynamic response more loads coupling loading device, including rectangular body Model
Case, model steel-pipe pile, fixed bracket, horizontal whirl-sprayed pile loading device, vertical cyclic load loading device and horizontal impact lotus
Carry loading device；
Wherein, the seabed foundations of test simulation, embedding model steel in test simulation seabed foundations are loaded in the model casing
Tubular pole, the fixed bracket are placed in ground grading；The horizontal whirl-sprayed pile loading device includes the first motor, frequency conversion
Governor, dial, rigid bull stick, rigid link, sliding block, the first spring, force snesor, horizontal cyclic load guide rail, level
CYCLIC LOADING plate, horizontal cyclic load bracket, horizontal addload steel loop, the first wirerope, the second wirerope, the first fixed pulley, the
Two fixed pulleys, counterweight loading disc；Wherein, the variable-frequency governor is connect with first motor；The dial with it is described
The fuselage of first motor is welded to connect；The rigidity bull stick is connect with the rotating shaft screw bolt of first motor；The rigidity
Connecting rod one end and the rigid bull stick are articulated and connected, and the other end and the sliding block are articulated and connected；The rigidity bull stick, the rigidity
Connecting rod, the sliding block, articulated connector form slider-crank mechanism；The sliding block is placed on the horizontal cyclic load and leads
On rail；First spring one end is connected with the slide block, and the other end is connect with the horizontal cyclic load plate；The level is followed
Ring load bracket is welded in the top exterior walls of the model casing two sides by angle steel；First fixed pulley, second fixed pulley
It is mounted on horizontal cyclic load bracket；The horizontal addload steel loop is inserted on the outer wall of the model steel-pipe pile；Described first
Wirerope one end is connect with the CYCLIC LOADING plate, and the other end is connect with the horizontal addload steel loop；Second wirerope one
End is connect with the counterweight loading disc, and the other end is connect with horizontal addload steel loop；First wirerope, second wirerope
Upper setting force sensor；
The vertical cyclic load loading device includes the second motor, variable-frequency governor, dial, turntable, third steel
Cord, the 4th wirerope, third fixed pulley, the 4th fixed pulley, vertical CYCLIC LOADING guide rail, trolley, vertical CYCLIC LOADING bracket,
Vertical CYCLIC LOADING plate, second spring, force snesor；Wherein the variable-frequency governor is connect with second motor；It is described
The fuselage of dial and second motor is welded to connect；The turntable is connect with the rotating shaft screw bolt of second motor；
The vertical CYCLIC LOADING guide rail is welded on the fixed bracket；The third fixed pulley is welded on the vertical CYCLIC LOADING
On the outer wall of guide rail side；The vertical CYCLIC LOADING bracket is welded on the two middle side part outer wall of model casing by angle steel；It is described
4th fixed pulley is mounted on the vertical CYCLIC LOADING bracket；The trolley is mounted on the vertical CYCLIC LOADING guide rail；
Third wirerope one end is connect with the turntable, and the other end connect around the third fixed pulley with trolley；It is described vertical
The stake top that lower load plate one end is placed on the model steel-pipe pile is recycled, is connected by buckling with the side wall of the model steel-pipe pile
It connects, the other end is connect with the second spring；Load plate one end is connect with the second spring in the vertical circulation, the other end
It is connect around the 4th fixed pulley with trolley；Force sensor is set on 4th wirerope；
The horizontal impact load loading device include the second motor, variable-frequency governor, dial, turntable, winder,
5th wirerope, the 5th fixed pulley, shock tripping gear, trip rod, Impulsive load trolley, Impulsive load oblique guide, impact add
Carry horizontal guide rail, Impulsive load plate, U-shaped buckle；Wherein, the variable-frequency governor is connect with second motor；The quarter
The fuselage of scale and second motor is welded to connect；The turntable is connect with the rotating shaft screw bolt of second motor；Institute
Winder is stated to be mounted on the turntable by bolt；Described 5th wirerope one end is connect with the winder, the other end around
The 5th fixed pulley is crossed to connect with the shock tripping gear；Impulsive load oblique guide one end is welded on the fixed branch
On frame, the other end and the Impulsive load horizontal guide rail are welded to connect；It is oblique that 5th fixed pulley is welded on the Impulsive load
On the outer wall of guide rail side；The Impulsive load plate and the U-shaped buckle are bolted and are mounted on the outer wall of model steel-pipe pile；
The trip rod is welded in the top exterior walls of Impulsive load oblique guide two sides；The shock tripping gear include drag hook,
First shaft coupling, the second shaft coupling, slide-bar, bull stick, third spring, pull rod；The drag hook passes through first shaft coupling and the pull rod
Connection；Described bull stick one end is connect by second shaft coupling with the pull rod, the other end by the third spring with it is described
Pull rod connection；Between second shaft coupling and the slide-bar, the Impulsive load trolley is mounted on the top of the drag hook
On the Impulsive load oblique guide, and it is connect with the drag hook.
By using above-mentioned technical proposal, beneficial effects of the present invention are as follows:
More load coupling loading devices of the present invention can overcome defect of the existing technology, as completely as possible
The status under loading for simulating ocean engineering pile foundation Life cycle provides ocean engineering pile foundation under a kind of more load couplings
Plinth-soil dynamic response experimental rig and test method.
Preferably, the model casing bottom is the draining for the 20cm thickness being made of gravel, PVC drain pipe, non-woven geotextile
System.
Preferably, the model box size are as follows: 3m × 1.2m × 1.6m (length × width × height) by angle steel skeleton and transparent has
The four sides of machine glass composition, the angle steel skeleton passes through the transparent organic glass sealing moulding.
Preferably, the model steel-pipe pile is process by seamless stainless steel material, wall thickness 2.5mm, in the model steel
A pair of of foil gauge is pasted every a distance on tubular pole outer wall, it is furthermore preferred that the distance is 5cm.
Preferably, the fixed bracket is welded by the angle steel of 10mm thickness, is placed in ground grading.
Preferably, the more loads coupling loading device further includes force snesor, displacement sensor, data collection system,
And the measured data of the loading device is obtained by force snesor, displacement sensor, foil gauge and by corresponding data collection system
；Institute's displacement sensors are mounted on horizontal cyclic load bracket, for the horizontal displacement of measurement model steel-pipe pile, power sensing
Device is used to record the size of power output in wirerope, and foil gauge is used to measure the strain size of the following pile body in mud face.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of test ocean works
The more loads of journey pile foundation-soil dynamic response couple loading device, not only applied widely, simulation precision is high, it is also contemplated that ocean
The status under loading of engineering pile basis Life cycle can simultaneously or separately apply horizontal whirl-sprayed pile, vertical cyclic load, water
Flat impact load, and can obtain under more load couplings caused by ocean engineering pile foundation plinth dynamic response and pile-soil interaction
Soil around pile rigidity reduction rule, the loading device are of great significance to ocean engineering basic engineering and maintenance.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Attached drawing 1 is that more loads couple loading device schematic diagram.
Attached drawing 2 is horizontal whirl-sprayed pile loading device schematic diagram.
Attached drawing 3 is slider-crank mechanism schematic diagram (when rigid bull stick goes to 0 °).
Attached drawing 4 is slider-crank mechanism schematic diagram (when rigid bull stick goes to 180 °).
Attached drawing 5 is vertical cyclic load loading device schematic diagram.
Attached drawing 6 is vertical cyclic load loading principle schematic diagram.
Attached drawing 7 is horizontal impact load loading device schematic diagram.
Attached drawing 8 is horizontal impact load loading principle schematic diagram.
In figure: 1, model casing；2, drainage system；3, model steel-pipe pile；4, horizontal cyclic loads bracket；5, horizontal addload steel
Ring；6, the first fixed pulley；7, the first wirerope；8, force snesor；9, the second fixed pulley；10, the second wirerope；11, counterweight adds
Load plate；12, displacement sensor；13, horizontal cyclic load plate；14, the first spring；15, sliding block；16, horizontal cyclic loads guide rail；
17, articulation；18, rigid link；19, rigid bull stick；20, shaft；21, the first motor；22, dial；23, second
Motor；24, variable-frequency governor；25, turntable；26, winder；27, third wirerope；28, third fixed pulley；29, it vertically follows
Ring loads guide rail；30, trolley；31, the 4th fixed pulley；32, the 4th steel wire；33, vertical to recycle upper load plate；34, second spring；
35, vertical to recycle lower load plate；36, it buckles；37, vertical CYCLIC LOADING bracket；38, fixed bracket；39, the 5th wirerope；40,
5th fixed pulley；41, trip rod；42, Impulsive load oblique guide；43, pull rod；44, third spring；45, bull stick；46, slide-bar；
47, drag hook；48, the first shaft coupling；49, the second shaft coupling；50, Impulsive load trolley；51, Impulsive load horizontal guide rail；52, lotus is impacted
Carry load plate；53, U-shaped buckle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of test more loads of ocean engineering pile foundation-soil dynamic response to couple load dress
It sets, not only compact-sized, design is rationally, but also applied widely, and simulation precision is high, to ocean engineering basic engineering and maintenance
It is of great significance.
A kind of test ocean engineering pile foundation-soil dynamic response more loads coupling loading device, including rectangular body Model
Case 1, model steel-pipe pile 3, fixed bracket 38, horizontal whirl-sprayed pile loading device, vertical cyclic load loading device and horizontal punching
Hit load loading device.
1 size of cuboid model casing are as follows: 3m × 1.2m × 1.6m (length × width × height), by angle steel skeleton and transparent organic glass
Glass composition, the four sides of angle steel skeleton pass through transparent organic glass sealing moulding, the sea bed of test simulation is loaded in model casing 1
Base, seabed foundations bottom are the drainage system 2 for the 20cm thickness being made of gravel, PVC drain pipe, non-woven geotextile；Model steel pipe
Stake 3 is process by seamless stainless steel material, wall thickness 2.5mm, pastes a pair of of strain every 5cm on 3 outer wall of model steel-pipe pile
Piece is embedded in seabed foundations top middle portion；Fixed bracket 38 is welded by the angle steel of 10mm thickness, is placed in ground grading.
As shown in Fig. 1, Fig. 2, horizontal whirl-sprayed pile loading device includes the first motor 21, variable-frequency governor 24, dial 22, rigidity
Bull stick 19, rigid link 18, sliding block 15, the first spring 14, force snesor 8, horizontal cyclic load guide rail 16, horizontal cyclic load
Plate 13, horizontal cyclic load bracket 4, horizontal addload steel loop 5, the first wirerope 7, the second wirerope 10, the first fixed pulley 6, the
Two fixed pulleys 9, counterweight loading disc 11.
Wherein, variable-frequency governor 24 is connect with the first motor 21, the fuselage welding of dial 22 and the first motor 21
Connection, the shaft 20 of rigid bull stick 19 and the first motor 21 are bolted, and 18 one end of rigid link and rigid bull stick 19 are hinged
Connection, the other end and sliding block 15 are articulated and connected, and rigid bull stick 19, rigid link 18, sliding block 15, articulation 17 form crank
Slide block mechanism；Sliding block 15 be placed on horizontal cyclic load guide rail 16 on, 14 one end of the first spring is connect with sliding block 15, the other end and
Horizontal cyclic load plate 13 connects；Horizontal cyclic load bracket 4 is welded in 1 two sides top exterior walls of model casing by 8mm thickness angle steel,
First fixed pulley 6, the second fixed pulley 9 are mounted on horizontal cyclic load bracket 4；Horizontal addload steel loop 5 is inserted in model steel-pipe pile 3
On outer wall, 7 one end of the first wirerope is connect with horizontal cyclic load plate 13, and the other end is connect with horizontal addload steel loop 5, the second steel
10 one end of cord is connect with counterweight loading disc 11, and the other end is connect with horizontal addload steel loop 5；First wirerope 7, the second wirerope
Upper 10 setting force sensor.
As shown in Fig. 1, Fig. 5, vertical cyclic load loading device includes the second motor 23, variable-frequency governor 24, scale
Disk 22, turntable 25, third wirerope 27, the 4th wirerope 32, third fixed pulley 28, the 4th fixed pulley 31, vertical CYCLIC LOADING
Guide rail 29, vertical CYCLIC LOADING bracket 37, the upper load plate 33 of vertical circulation, second spring 34, vertically recycles lower load at trolley 30
Plate 35, force snesor 8.
Wherein, variable-frequency governor 24 is connect with the second motor 23, the fuselage welding of dial 22 and the second motor 23
Connection, turntable 25 and the shaft 20 of the second motor 23 are bolted, and vertical CYCLIC LOADING guide rail 29 is welded on fixed bracket 38
On, third fixed pulley 28 is welded on vertical 29 side outer wall of CYCLIC LOADING guide rail；Vertical CYCLIC LOADING bracket 37 is by 8mm thickness angle
Steel is welded on 1 liang of middle side part outer wall of model casing, and the 4th fixed pulley 31 is mounted on vertical CYCLIC LOADING bracket 37；Trolley 30 is pacified
On vertical CYCLIC LOADING guide rail 29,27 one end of third wirerope is connect with turntable 25, and the other end bypasses third fixed pulley 28
It is connect with trolley 30；Vertical lower 35 one end of load plate of circulation is placed on 3 stake top of model steel-pipe pile, passes through buckle 36 and model steel pipe
Stake 3 side walls connection, the other end are connect with second spring 34；Vertical above 33 one end of load plate that recycles is connect with second spring 34, separately
One end connect around the 4th fixed pulley 31 with trolley 30；Force sensor 8 is set on the 4th wirerope 32.
As shown in Fig. 1, Fig. 7, horizontal impact load loading device includes the second motor 23, variable-frequency governor 24, scale
Disk 22, winder 26, the 5th wirerope 39, the 5th fixed pulley 40, hits tripping gear, trip rod 41, Impulsive load at turntable 25
Trolley 50, Impulsive load oblique guide 42, Impulsive load horizontal guide rail 51, Impulsive load plate 52, U-shaped buckle 53.
Wherein, variable-frequency governor 24 is connect with the second motor 23, the fuselage welding of dial 22 and the second motor 23
Connection, turntable 25 and the shaft 20 of the second motor 23 are bolted；Winder 26 is mounted on turntable 25 by bolt, and the 5th
39 one end of wirerope is connect with winder 26, and the other end connect around the 5th fixed pulley 39 with tripping gear is hit；Impulsive load
42 one end of oblique guide is welded on fixed bracket, and the other end and Impulsive load horizontal guide rail 51 are welded to connect；5th fixed pulley 40
It is welded on 42 side outer wall of Impulsive load oblique guide；Impulsive load plate 52 and U-shaped buckle 53 are bolted and are mounted on model
On 3 outer wall of steel-pipe pile, trip rod 41 is welded in 42 two sides top exterior walls of Impulsive load oblique guide, and hitting tripping gear includes drawing
Hook 47, the first shaft coupling 48, the second shaft coupling 49, slide-bar 46, bull stick 45, third spring 44, pull rod 43, drag hook 47 pass through the first shaft coupling
48 connect with pull rod 43, and 45 one end of bull stick is connect by the second shaft coupling 49 with pull rod 43, and the other end is by third spring 44 and draws
Bar 43 connects, and between the second shaft coupling 49 and slide-bar 46, Impulsive load trolley 50 is mounted on Impulsive load on the top of drag hook 47
On oblique guide 42, it is connect with drag hook 47.
The measured data of pilot system is acquired by force snesor 8, displacement sensor 12, foil gauge and by corresponding data
System obtains；Displacement sensor 12 is mounted on horizontal cyclic load bracket 4, for the horizontal displacement of measurement model steel-pipe pile 3,
Force snesor 8 is used to record the size of power output in wirerope, and foil gauge is used to measure the strain size of the following pile body in mud face.
The test ocean engineering pile foundation-soil dynamic response more loads coupling loading device provided by the invention patent can
The operation of correlation test is carried out according to the following steps:
(1) a pair of of foil gauge is pasted every 5cm on 3 outer wall of model steel-pipe pile；1 bottom discharge system 2 of model casing is set,
It is laid with the PVC drain pipe of 5cm outer diameter in 1 bottom of model casing, is reserved with aperture on drainpipe；It is 2~3cm in layer overlay partial size
Rubble, the work that spreads a layer of clay at the top of metalling cloth, result in formation of the drainage systems that a thickness is about 20cm；It will mould
Quasi- seabed soil inserts model casing, the thickness of control filling seabed soil is about 1.2m, embedding equipped with foil gauge in seabed soil
Model steel-pipe pile 3；
(2) as shown in Figure 1, on horizontal cyclic bracket 4 installation displacement sensor 12, in the first wirerope 7, the second steel wire
Restrict the 10, the 4th wirerope 32 on install force snesor 8, before the test examine displacement sensor 12, force snesor 8, foil gauge and
Whether data collection system is normal；
(3) horizontal single-headed cyclic loading test, as shown in Figure 2, Figure 3, Figure 4,7 one end of the first wirerope and horizontal addload steel
Ring 5 is connected, and the other end is connected with horizontal cyclic load plate 13, adjusts the position of the first motor 21, is in the first spring 14
When former long status, then 0 ° position of the hinge that rigid bull stick 19 is connect with rigid link 18 on dial passes through frequency conversion tune
Loading frequency is arranged in fast device 24, starts the first motor 21, and rigid link 18 drives the sliding block 15 in slider-crank mechanism along water
Flat CYCLIC LOADING guide rail 16 moves, and causes 14 length of the first spring to change in 15 reciprocatory movement of sliding block, due to rigid bull stick
First spring 14 is in former long status, such sliding block when 19 hinges connecting with rigid link 18 are in 0 ° of position on dial 22
15 first spring 14 will be in elongation state always in reciprocatory movement on horizontal cyclic load guide rail 16, and the first of elongation
The outbound course in the first wirerope 7 is constant, size variation horizontal single by connected horizontal cyclic load plate 13 for spring 14
To cyclic force, the application of horizontal single-headed cyclic load is completed by the rigid ring 5 of the horizontal addload being connected with the first wirerope 7；
(4) horizontal bidirectional cyclic loading test is tried in step (3) horizontal single-headed CYCLIC LOADING as shown in Figure 2, Figure 3, Figure 4
On the basis of experiment device, the second wirerope 10 is connected in the other side of horizontal addload steel loop 5, the second wirerope 10 is fixed around second
Pulley 9 connects counterweight loading disc 11, keeps the position of the first motor 21 and revolving speed constant, and weight is placed on counterweight loading disc 11
For mg mass block (Wherein p is the output power of the first motor, and n is the revolving speed of the first motor, and r is
The length of rigid bull stick), this ensure that when rigid bull stick 19 goes to 45 ° and 135 ° of positions, with 5 two sides of horizontal addload steel loop
The power exported in connected the first wirerope 7, the second wirerope 10 is equal in magnitude, contrary, and the power of system output at this time is
Zero, in rigid 19 rotation process of bull stick, power in the first wirerope 7 and the second wirerope 10 that are connected with horizontal addload steel loop 5
Difference is the horizontal cyclic power of system output, to complete the application of horizontal bidirectional cyclic load；
(5) vertical cyclic loading test, as shown in Figure 5, Figure 6,34 both ends of second spring are loaded in vertical circulation respectively
Plate 33, the lower load plate 35 of vertical circulation connect, and 35 one end of load plate is placed on 3 stake top of model steel-pipe pile under vertically recycling, and passes through
Buckle 36 is connect with 3 side wall of model steel-pipe pile；The vertical above load plate 33 that recycles is connect with the 4th wirerope 32, the 4th wirerope 32
It is connect around the 4th fixed pulley 31 with one end of trolley 30；The other end of trolley 30 is connect with third wirerope 27, third steel wire
Rope 27 bypasses third fixed pulley 28 and being hinged on turntable 25；Loading frequency is set by variable-frequency governor 24, starts second
Motor 23, turntable 25 rotate, and drive trolley 30 vertically recycling by the third wirerope 27 being connected with the hinge on turntable 25
It is moved back and forth on load guide rail 29, cause and vertically recycles the elongation of second spring 34 or compression that upper load plate 33 is connected, passed through
The vertical lower load plate 35 of circulation applies vertical cyclic load to model steel-pipe pile 3；
(6) horizontal impact load test, as shown in Figure 7, Figure 8, the winder on 39 one end of the 5th wirerope and turntable 25
26 connections, the other end connect around the 5th fixed pulley 40 with the pull rod 43 for hitting tripping gear；Impulsive load trolley 50 and shock
The drag hook 47 of tripping gear connects；Trip rod 41 is welded in 42 two sides top exterior walls of Impulsive load oblique guide；Impulsive load plate
52 are bolted and are mounted on 3 outer wall of model steel-pipe pile with U-shaped buckle 53；By variable-frequency governor 24, loading frequency is set,
The second motor 23 is started, turntable 25 drives winder 26 to rotate, and the 5th wirerope 39 being connected on winder 26 is by hitting
The Impulsive load oblique guide 42 that the drag hook 47 for hitting tripping gear drives Impulsive load trolley 50 to be θ along inclination angle moves upwards, at this time
The bull stick 45 for hitting tripping gear is in plumbness under the action of third spring 44, and 47 end of drag hook is located on pull rod 43
Between second shaft coupling 49 and slide-bar 46, drag hook 47 is made to block fixation, when bull stick 45 moves at trip rod 41, bull stick 45 and hit
Bar 41 collides, and bull stick 45 overcomes 44 elastic force of third spring and rotates clockwise around the second shaft coupling 49, and slide-bar 46 is to drag hook 47
Top sliding, drives drag hook 47 to rotate clockwise around the first shaft coupling 48, and Impulsive load trolley 50 is made to break off relations.Impulsive load trolley 50
It is moved downward after unhook along Impulsive load oblique guide 42, into Impulsive load horizontal guide rail 51, impact load plate 52 is completed
The application of horizontal impact load.
(7) when testing, force snesor 8, displacement sensor 12, foil gauge are connected with corresponding data collection system, and with
Computer connection, can instant recording test load when model steel-pipe pile-soil dynamic response.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (6)
1. a kind of test more loads of ocean engineering pile foundation-soil dynamic response couple loading device, which is characterized in that including length
Cube model casing, model steel-pipe pile, fixed bracket, horizontal whirl-sprayed pile loading device, vertical cyclic load loading device and water
Flat impact load loading device；
Wherein, in the model casing filling test simulation seabed foundations, embedding model steel-pipe pile in test simulation seabed foundations,
The fixed bracket is placed in ground grading；
The horizontal whirl-sprayed pile loading device connects including the first motor, variable-frequency governor, dial, rigid bull stick, rigidity
Bar, sliding block, the first spring, force snesor, horizontal cyclic load guide rail, horizontal cyclic load plate, horizontal cyclic load bracket, water
Flat load steel loop, the first wirerope, the second wirerope, the first fixed pulley, the second fixed pulley, counterweight loading disc；Wherein, the change
Frequency governor is connect with first motor；The fuselage of the dial and first motor is welded to connect；It is described rigid
Property bull stick is connect with the rotating shaft screw bolt of first motor；Described rigid link one end and the rigid bull stick are articulated and connected,
The other end and the sliding block are articulated and connected；The rigidity bull stick, the rigid link, the sliding block, articulation composition are bent
Handle slide block mechanism；The sliding block is placed on the horizontal cyclic load guide rail；First spring one end and the sliding block connect
It connects, the other end is connect with the horizontal cyclic load plate；The horizontal cyclic load bracket is welded on the model casing by angle steel
In the top exterior walls of two sides；First fixed pulley, second fixed pulley are mounted on horizontal cyclic load bracket；The level
Load steel loop is inserted on the outer wall of the model steel-pipe pile；First wirerope one end is connect with the CYCLIC LOADING plate, separately
One end is connect with the horizontal addload steel loop；Second wirerope one end is connect with the counterweight loading disc, the other end and water
Flat load steel loop connection；Force sensor is set on first wirerope, second wirerope；
The vertical cyclic load loading device include the second motor, variable-frequency governor, dial, turntable, third wirerope,
It is 4th wirerope, third fixed pulley, the 4th fixed pulley, vertical CYCLIC LOADING guide rail, trolley, vertical CYCLIC LOADING bracket, vertical
CYCLIC LOADING plate, second spring, force snesor；Wherein the variable-frequency governor is connect with second motor；The scale
The fuselage of disk and second motor is welded to connect；The turntable is connect with the rotating shaft screw bolt of second motor；It is described
Vertical CYCLIC LOADING guide rail is welded on the fixed bracket；The third fixed pulley is welded on the vertical CYCLIC LOADING guide rail
On the outer wall of side；The vertical CYCLIC LOADING bracket is welded on the two middle side part outer wall of model casing by angle steel；Described 4th
Fixed pulley is mounted on the vertical CYCLIC LOADING bracket；The trolley is mounted on the vertical CYCLIC LOADING guide rail；It is described
Third wirerope one end is connect with the turntable, and the other end connect around the third fixed pulley with trolley；The vertical circulation
Lower load plate one end is placed on the stake top of the model steel-pipe pile, is connect by buckling with the side wall of the model steel-pipe pile, separately
One end is connect with the second spring；Load plate one end is connect with the second spring in the vertical circulation, and the other end bypasses
4th fixed pulley is connect with trolley；Force sensor is set on 4th wirerope；
The horizontal impact load loading device includes the second motor, variable-frequency governor, dial, turntable, winder, the 5th
Wirerope, hits tripping gear, trip rod, Impulsive load trolley, Impulsive load oblique guide, Impulsive load water at the 5th fixed pulley
Level gauge, Impulsive load plate, U-shaped buckle；Wherein, the variable-frequency governor is connect with second motor；The dial
It is welded to connect with the fuselage of second motor；The turntable is connect with the rotating shaft screw bolt of second motor；It is described around
Line device is mounted on the turntable by bolt；Described 5th wirerope one end is connect with the winder, and the other end bypasses institute
The 5th fixed pulley is stated to connect with the shock tripping gear；Impulsive load oblique guide one end is welded on the fixed bracket
On, the other end and the Impulsive load horizontal guide rail are welded to connect；5th fixed pulley is welded on the Impulsive load and tiltedly leads
On the outer wall of rail side；The Impulsive load plate and the U-shaped buckle are bolted and are mounted on the outer wall of model steel-pipe pile；Institute
Trip rod is stated to be welded in the top exterior walls of Impulsive load oblique guide two sides；The shock tripping gear includes drag hook,
One shaft coupling, the second shaft coupling, slide-bar, bull stick, third spring, pull rod；The drag hook is connected by first shaft coupling and the pull rod
It connects；Described bull stick one end is connect by second shaft coupling with the pull rod, and the other end passes through the third spring and the drawing
Bar connection；Between second shaft coupling and the slide-bar, the Impulsive load trolley is mounted on institute on the top of the drag hook
It states on Impulsive load oblique guide, and is connect with the drag hook.
2. the test more loads of ocean engineering pile foundation-soil dynamic response according to claim 1 couple loading device,
It is characterized in that, the model casing bottom is the drainage system being made of gravel, PVC drain pipe, non-woven geotextile.
3. the test more loads of ocean engineering pile foundation-soil dynamic response according to claim 2 couple loading device,
It is characterized in that, the model casing is made of angle steel skeleton and transparent organic glass, and the four sides of the angle steel skeleton is described in
Transparent organic glass sealing moulding.
4. the test more loads of ocean engineering pile foundation-soil dynamic response according to claim 1 couple loading device,
Be characterized in that, the model steel-pipe pile is process by seamless stainless steel material, and on the model steel-pipe pile outer wall every
Certain distance pastes a pair of of foil gauge.
5. the test more loads of ocean engineering pile foundation-soil dynamic response according to claim 1 couple loading device,
It is characterized in that, the fixed bracket is welded by angle steel, and the fixed bracket is placed in ground grading.
6. any more loads of test ocean engineering pile foundation-soil dynamic response couple load according to claim 1~5
Device, which is characterized in that further include force snesor, displacement sensor, data collection system；Wherein, institute's displacement sensors are pacified
On horizontal cyclic load bracket, for measuring the horizontal displacement of the model steel-pipe pile；The force snesor is used for
Record the size of power output in wirerope.
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| CN201910063922.XA CN109724864B (en) | 2019-01-23 | 2019-01-23 | It tests the more loads of ocean engineering pile foundation-soil dynamic response and couples loading device |
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| CN110439042B (en) * | 2019-08-02 | 2021-06-08 | 山东科技大学 | Marine foundation multidirectional loading test system and method for simulating wind-wave action |
| CN112082856B (en) * | 2019-10-28 | 2022-01-28 | 中国海洋大学 | 3D static-dynamic geotechnical deformation and strength test system |
| CN113176071A (en) * | 2021-04-21 | 2021-07-27 | 北京工业大学 | Offshore wind power structure system coupling model test loading system under action of complex dynamic load |
| CN113806852B (en) * | 2021-11-22 | 2022-02-22 | 中交天津港湾工程研究院有限公司 | Method for predicting stability of deepwater thin-wall steel cylinder |
| CN114778061B (en) * | 2022-06-23 | 2022-09-23 | 西南石油大学 | Device and method for testing suspension tunnel anchor cable under cable breakage caused by impact |
| CN117147278B (en) * | 2023-08-31 | 2024-03-22 | 广西大学 | Long-term load impact coupling loading method, system, equipment and medium |
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