CN108360577A - Simulate the torque loading device and method of stake top linearly or nonlinearly deflection constraint - Google Patents
Simulate the torque loading device and method of stake top linearly or nonlinearly deflection constraint Download PDFInfo
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- CN108360577A CN108360577A CN201810119082.XA CN201810119082A CN108360577A CN 108360577 A CN108360577 A CN 108360577A CN 201810119082 A CN201810119082 A CN 201810119082A CN 108360577 A CN108360577 A CN 108360577A
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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
The present invention provides a kind of torque loading device and method of simulation stake top linearly or nonlinearly deflection constraint, belongs to the technical field of pile foundation engineering, which includes column, torque load-on module and stake top torsional restraint module；The quantity of column is four, and the rectangular setting centered on Model Pile, bottom end is fixed on the support surface；Torque load-on module includes for being set in the separator box of model stake top, using the center line of Model Pile two loading beams that arranged symmetrically and first end is fixedly connected with separator box as symmetry axis and MTS actuator；Stake top torsional restraint module includes gear, mounting box, Hookean spring slide block assembly, nonlinear spring slide block assembly and ratch；Ratch is engaged by the sawtooth portion on the body of rod with gear, and both ends are stretched into mounting box and are provided with smashes head for squeezing the hemisphere of inclined plane slide block or curved surface sliding block.It is connected the arrangement achieves the constraint of stake top torsional flexibility and the constraint of two class torsion stiffness of stake top linear and nonlinear can be simulated.
Description
Technical field
The present invention relates to the technical field of pile foundation engineering, more particularly to a kind of simulation stake top, linearly or nonlinearly rigidity is about
The torque loading device and method of beam.
Background technology
The pile foundation often preferred type of foundation as marine large scale structure, such as bridge spanning the sea, offshore oil platform, over strait
Power transmission tower, anemometer tower etc..Under earthquake, ship collision, the stormy waves the effects that, foundation pile is subjected to the effect of horizontal eccentric load, stake
Top generates torsion.Marine jacket steel pipe pile foundation, stake top anchor insufficient prefabricated tubular pile, are constrained by superstructure or cushion cap
Ideal stake top build-in situation will be weaker than, pile crown is easily led under horizontal Under Eccentric Loading and is rotated together with structure or in cushion cap
It inside rotates, pile crown is constrained between the clamped flexible connection between pile crown freedom of pile crown at this time, belongs to varied rigid link
The scope of node.When stake and firm cushion cap anchoring, foundation pile can also rotate therewith when cushion cap is turned round.As it can be seen that pile crown constraint is shadow
One of an important factor for ringing single pile horizontal load-bearing characteristic.When load is larger, pile crown coupling part will surrender, at this time stake top
Torsion stiffness is in nonlinear change with windup-degree, shows as the increase with torsion angle, stake top torque increasing degree gradually subtracts
It is small.If recognizing deficiency to stake top constraints in design, structure real standard displacement may be made to exceed design value.
Chinese invention patent (CN201210497143.9) discloses a kind of horizontal loading test stake top restraint device and side
Method, when realizing stake top horizontal addload, stake top can only occurred level displacement, without rotate or other directions displacement.In
State's utility model patent (CN201520393007.4) discloses a kind of stake position restraint device for pile foundation model test, including one
The babinet of a uncovered, the X, Y, Z axis direction of babinet upper edge three dimensions are respectively set that there are two X-axis to adjust beam（Two phases are set
To arc restraining plate）, four Y-axis adjust beam and four Z axis adjust beams, be bolted, and pass through and adjust Z axis and adjust beam
On bolt location make two X-axis adjust beams to draw close to pile body, to make restraining plate gradually encase pile body, realize fixed model
The position of stake.But generally speaking, existing torsion loading device is directed to stake top free state mostly, rarely has stake under stake top flexible constraint
Experimental Study on Torsion Test, and still lack loading device related to this.
Invention content
The purpose of the present invention is to provide a kind of torque loading device of simulation stake top linearly or nonlinearly deflection constraint, with
Realize that the constraint of stake top torsional flexibility connects and simulates the constraint of two class torsion stiffness of stake top linear and nonlinear, and using the device as base
Plinth provides a kind of method of simulation stake top linearly or nonlinearly deflection constraint.
The present invention provides a kind of torque loading device of simulation stake top linearly or nonlinearly deflection constraint, including column, turns round
Square load-on module and stake top torsional restraint module；The quantity of column is four, the rectangular setting centered on Model Pile, bottom end
It fixes on the support surface；Torque load-on module includes for being set in the separator box of model stake top, with the center line of Model Pile
It is symmetrical arranged for symmetry axis and two loading beams being fixedly connected with separator box of first end and MTS actuator；Loading beam and MTS
Actuator is in the same plane parallel with supporting surface；MTS actuator is connect perpendicular to loading beam, loading head with loading beam,
And it is symmetrical arranged by symmetry axis of the center line of Model Pile；Stake top torsional restraint module includes gear, mounting box, Hookean spring-
Slide block assembly, nonlinear spring-slide block assembly and ratch；Gear centre portion is fixedly connected with the top surface of separator box；Mounting box
Quantity is four, is fixed on the top of column；The quantity of Hookean spring-slide block assembly and nonlinear spring-slide block assembly is
Two, it is arranged in mounting box and is arranged diagonal；Hookean spring-slide block assembly includes the inclined-plane being slidably arranged in mounting box
Sliding block and the spring for connecting inclined plane slide block and mounting box inner wall；The quantity of inclined plane slide block and spring is two, and inclined-plane is slided
The inclined-plane of block is oppositely arranged；Nonlinear spring-slide block assembly includes the curved surface sliding block being slidably arranged in mounting box and connection
The spring of curved surface sliding block and mounting box inner wall；The quantity of curved surface sliding block and spring is two, and the curved surface of curved surface sliding block is opposite
Setting；Inclined plane slide block and curved surface sliding block are in the same slip plane parallel with supporting surface；Ratch passes through the sawtooth portion on the body of rod
It is engaged with gear, both ends are stretched into mounting box and are provided with smashes head for squeezing the hemisphere of inclined plane slide block or curved surface sliding block.
Further, stake top torsional restraint module further includes link and sleeve；Link includes first be oppositely arranged
Connecting rod and second connecting rod and the third connecting rod for connecting first connecting rod midpoint and second connecting rod midpoint；Sleeve setting connects second
Extension bar both ends；First connecting rod is used to be connected with the mounting box of nonlinear spring-slide block assembly and is provided with Hookean spring-cunning
The mounting box of block assembly；Sleeve is passed through positioned at the smooth body of rod of sawtooth portion both sides on ratch, and can be along the axial movement of sleeve.
Further, the sawtooth portion of ratch is flat, and the smooth body of rod for being located at sawtooth portion both sides is cylindric；Sleeve
Section is square, and the ball that cooperation is rolled with the smooth body of rod is provided on internal four angles.
Further, the side that inclined plane slide block and curved surface sliding block are contacted with mounting box inner wall is provided with idler wheel；Mounting box
It is provided with the sliding slot coordinated with idler wheel on upper inside walls and downside inner wall.
Further, gear be blade type hollow out gear, including outer edge be sawtooth ring part, be arranged in ring part
The blade of the central part of the heart and the inward flange and central part of connection ring part.
Further, the inner peripheral surface of separator box and the peripheral surface of model stake top agree with, including two separable babinets；
Two babinets are connected with the stake top that the center line of Model Pile is that symmetrical axial symmetry is set in Model Pile by split bolt；Load
Beam is I-steel, welds with separator box, is bolted with the loading head of MTS actuator；Gear is bolted with separator box.
Further, multiple ribbed stiffeners are welded between two edges of a wing of I-steel.
Further, the torque loading device of simulation stake top linearly or nonlinearly deflection constraint, further includes for fixing MTS
The counter force wall of actuator end.
Further, the torque loading device of simulation stake top linearly or nonlinearly deflection constraint further includes being used for fixed model stake
Model casing, filled model clay in model casing.
The present invention also provides a kind of methods of simulation stake top linearly or nonlinearly deflection constraint, and the method is based on above-mentioned
Simulate stake top linearly or nonlinearly deflection constraint torque loading device implement, include the following steps：
S1. MTS actuator is opened, a pair of couple of force equal in magnitude, direction is opposite is applied to loading beam, and will by separator box
Torque acts on model stake top, and band moving gear rotates together；
S2. the rotation displacement of model stake top is amplified by gear, and ratch is driven to move, the hemisphere at ratch both ends is smash
Head squeezes the Hookean spring-slide block assembly being diagonally arranged or nonlinear spring-slide block assembly, inclined plane slide block or the compression of curved surface sliding block
Spring realizes the constraint of stake top linear rigidity or non-linear rigidity constraint.
Compared with prior art, advantage of the invention is that：
1. realizing the constraint connection of stake top torsional flexibility, insufficient prefabricated pile is anchored to carry out marine jacket steel-pipe pile and pile crown
Torque characteristic provide experimental condition；
2. converting stake top to ratch horizontal movement, and be amplified by gear, using Hookean spring-slide block assembly and
Nonlinear spring-slide block assembly dexterously realizes the application of stake top inverted constraint condition；
3. Hookean spring-slide block assembly and nonlinear spring-slide block assembly can realize that the torsion of two class of stake top linear and nonlinear is rigid
Degree constraint, improves the applicability of experimental provision.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein：
Fig. 1 is the main view for the simulation stake top linearly or nonlinearly torque loading device of deflection constraint that the embodiment of the present invention 1 provides
Figure；
Fig. 2 is the side view of torque loading device shown in Fig. 1；
Fig. 3 is the vertical view of torque loading device shown in Fig. 1；
Fig. 4 be in torque loading device shown in Fig. 1 separator box and loading beam in the connection front view of stake top；
Fig. 5 is the connection side view of separator box and loading beam shown in Fig. 4 in stake top；
Fig. 6 is the connection vertical view of separator box and loading beam shown in Fig. 4 in stake top；
Fig. 7 is the front view of Hookean spring-slide block assembly or nonlinear spring-slide block assembly in torque loading device shown in Fig. 1；
Fig. 8 is the vertical view of Hookean spring-slide block assembly shown in Fig. 7；
Fig. 9 is the vertical view of nonlinear spring-slide block assembly shown in Fig. 7；
Figure 10 is the scheme of installation of ratch and sleeve in torque loading device shown in Fig. 1；
Figure 11 is the force analysis figure of inclined plane slide block in embodiment 2；
Figure 12 is that curvilinear function is in embodiment 2y=x 2Curved surface sliding block force analysis figure；
Figure 13 is that curvilinear function is in embodiment 2x 2 +y 2 =a 2 Curved surface sliding block force analysis figure.
Label：100- columns；201- separator boxs；202- loading beams；203-MTS actuator；204- ribbed stiffeners；301- teeth
Wheel；302- mounting boxs；303- ratch；304- inclined plane slide blocks；305- springs；306- curved surface sliding blocks；307- hemispheres smash head；308-
Link；309- sleeves；310- balls；311- idler wheels；400- counter force walls；500- model casings；600- Model Piles.
Specific implementation mode
Embodiment 1
The present embodiment provides a kind of torque loading devices of simulation stake top linearly or nonlinearly deflection constraint, such as Fig. 1 to Fig. 9 institutes
Show, including column 100, torque load-on module and stake top torsional restraint module；The quantity of column 100 is four, with Model Pile 600
Centered on rectangular setting, bottom end fix such as be bolted on the support surface；Torque load-on module includes for being set in mould
The separator box 201 of 600 stake top of type stake is symmetrical arranged using the center line of Model Pile 600 as symmetry axis and first end and separator box 201
Two loading beams 202 and MTS actuator 203 being fixedly connected；Loading beam 202 and MTS actuator 203 are in flat with supporting surface
In capable same plane；MTS actuator 203 is connect perpendicular to loading beam 202, loading head with loading beam 202, and with Model Pile
600 center line is symmetrical arranged for symmetry axis；Stake top torsional restraint module includes gear 301, mounting box 302, Hookean spring-cunning
Block assembly, nonlinear spring-slide block assembly and ratch 303；301 central part of gear is fixedly connected with the top surface of separator box 201；Peace
The quantity of mounted box 302 is four, is fixed on the top of column 100；Hookean spring-slide block assembly and nonlinear spring-sliding block group
The quantity of part is two, and setting is in mounting box 302 and is arranged diagonal；Hookean spring-slide block assembly includes that sliding is arranged
The spring 305 of inclined plane slide block 304 and connection inclined plane slide block 304 and 302 inner wall of mounting box in mounting box 302；It slides on inclined-plane
The quantity of block 304 and spring 305 is two, and the inclined-plane of inclined plane slide block 304 is oppositely arranged；Nonlinear spring-slide block assembly
Include the bullet of the curved surface sliding block 306 and connection curved surface sliding block 306 and 302 inner wall of mounting box that are slidably arranged in mounting box 302
Spring 305；The quantity of curved surface sliding block 306 and spring 305 is two, and the curved surface of curved surface sliding block 306 is oppositely arranged；Inclined plane slide block
304 and curved surface sliding block 306 be in the same slip plane parallel with supporting surface；Ratch 303 passes through sawtooth portion on the body of rod and tooth
301 engagement of wheel, both ends are stretched into mounting box 302 and are provided with the hemisphere for squeezing inclined plane slide block 304 or curved surface sliding block 306
Smash first 307.
Further, column 100 is rectangle column.
In order to reduce the vibrations that ratch 303 generates during exercise, keep the movement of ratch 303 more steady, as shown in Fig. 2,
Stake top torsional restraint module further includes link 308 and sleeve 309；Link 308 includes the first connecting rod that is oppositely arranged and the
Two connecting rods and the third connecting rod for connecting first connecting rod midpoint and second connecting rod midpoint；Sleeve 309 is arranged in the second connecting rod
Both ends；First connecting rod is used to be connected with the mounting box 302 of nonlinear spring-slide block assembly and is provided with Hookean spring-cunning
The mounting box 302 of block assembly；Sleeve 309 is passed through positioned at the smooth body of rod of sawtooth portion both sides on ratch 303, and can be along sleeve
309 axial movement.The hanging setting that link 308 is realized by mounting box 302, avoids through additional support construction
Support connecting frame 308 simplifies the structure of whole device.
Further, the sawtooth portion of ratch 303 is flat, and the smooth body of rod for being located at sawtooth portion both sides is cylindric.Set
Cylinder 309 can be set to cylindrical shape, is socketed with the smooth body of rod, in order to reduce the frictional force between the smooth body of rod and sleeve 309, this reality
It applies example and ball 310 is set between the smooth body of rod and sleeve 309, sliding friction is become into rolling friction, it is preferable that such as Figure 10 institutes
Show, the section of sleeve 309 is square, and the ball 310 that cooperation is rolled with the smooth body of rod is provided on internal four angles, in this way
Design structure it is more simple.If being circle by the section of sleeve 309, it need to be arranged on the barrel of sleeve 309 and accommodate ball
310 groove.
Further, as shown in Figure 7 to 9, inclined plane slide block 304 and curved surface sliding block 306 are contacted with 302 inner wall of mounting box
Side is provided with idler wheel 311, to reduce the frictional resistance of inclined plane slide block 304 and curved surface sliding block 306, improves the precision of experiment；Peace
It is provided with the sliding slot coordinated with idler wheel 311 in the upper inside walls and downside inner wall of mounted box 302, to ensure inclined plane slide block 304 and song
Face sliding block 306 can be slided along sliding slot, avoid generating offset, outside inner wall（Side far from Model Pile 600）On be not provided with sliding
Slot, to provide support to inclined plane slide block 304 and curved surface sliding block 306.
Further, gear 301 is that blade type hollow out gear is conducted oneself with dignity with reducing gear 301, convenient for rotation；Including outer edge
For sawtooth ring part, be arranged ring part center central part and connect ring part inward flange and central part blade.
Further, the inner peripheral surface of separator box 201 and the peripheral surface of 600 stake top of Model Pile agree with, including two separable
Babinet；Two babinets are with the stake top that the center line of Model Pile 600 is that symmetrical axial symmetry is set in Model Pile 600, by drawing
It is bolted；Loading beam 202 is I-steel, welds with separator box 201, is bolted with the loading head of MTS actuator 203；Tooth
Wheel 301 is bolted with separator box 201.
Further, as shown in fig. 6, multiple ribbed stiffeners 204 are welded between two edges of a wing of I-steel, to ensure I-shaped
The rigidity of steel.
Further, the torque loading device of simulation stake top linearly or nonlinearly deflection constraint, further includes for fixing MTS
The counter force wall 400 of 203 end of actuator.
Further, the torque loading device of simulation stake top linearly or nonlinearly deflection constraint further includes being used for fixed model stake
600 model casing 500 has filled model clay in model casing 500.
Embodiment 2
The present embodiment provides a kind of method of simulation stake top linearly or nonlinearly deflection constraint, the method is based on 1 institute of embodiment
The simulation stake top stated linearly or nonlinearly deflection constraint torque loading device implement, include the following steps：
S1. MTS actuator 203 is opened, a pair of couple of force equal in magnitude, direction is opposite is applied to loading beam 202, and by dividing
Torque is acted on into 600 stake top of Model Pile from case 201, band moving gear 301 rotates together；
S2. the rotation displacement of 600 stake top of Model Pile is amplified by gear 301, and ratch 303 is driven to move, 303 liang of ratch
The hemisphere at end smashes first 307 and squeezes the Hookean spring-slide block assembly being diagonally arranged or nonlinear spring-slide block assembly, and inclined-plane is slided
306 compressed spring 305 of block 304 or curved surface sliding block realizes the constraint of stake top linear rigidity or non-linear rigidity constraint.
Before carrying out step S1, hemisphere smashes first 307 and contacts but do not oppress with inclined plane slide block 304 and curved surface sliding block 306.
As shown in figure 11, in the present embodiment, when simulating the constraint of stake top linear rigidity by Hookean spring-slide block assembly, stake
Push up restraining momentTWith stake top cornerαFunctional relation derive it is as follows（Arrow direction is 305 compression direction of spring in figure）：
It is with 305 direction of motion of springxAxis, the then direction of motion that hemisphere smashes first 307 areyAxis；
If 304 inclination angle of inclined plane slide block isθ, 305 rigidity of spring isk, hemisphere smash first 307 suffered by counter-force beF y , spring pressure isF x , hemisphere that inclined plane slide block 304 is subject to, which is smash first 307 and squeezed, to be generatedyDirection displacement（Or hemisphere smashes first 307 displacement）Fory, inclined plane slide block 304xAxial displacement isx, it is apparent fromx、yThere are following relationships：
Inclined plane slide block 304 existsxPower suffered by axis withF x Size is identical and direction on the contrary,yPower suffered by axis isF y The two of size
/ mono- and direction on the contrary, according to force analysis it is found that
Formula (1) is substituted into formula (2) to obtain,
If 301 radius of gear isR, stake top corner isα, hemisphere that inclined plane slide block 304 is subject to, which is smash first 307 and squeezed, to be generatedyAxis
DisplacementyThe camber line of as 301 edge of gear rotation is long, then has
Formula (4) is substituted into formula (3) to obtain,
Then stake top restraining momentTWith stake top cornerαFinal relationship be：
As shown in Figure 12 or Figure 13, in the present embodiment, stake top linear rigidity is simulated about by nonlinear spring-slide block assembly
Shu Shi, stake top restraining momentTWith stake top cornerαFunctional relation derive it is as follows（Arrow direction is 305 side of compression of spring in figure
To）：
Coordinate system is established as origin using the vertex of curved surface sliding block 306 or the center of circle, if sliding block curvilinear function is
x=f(y) (7)
If original state lower surface camber sliding block 306 smashes first 307 contact point with hemisphereA(X 0 , Y 0 ), when curved surface sliding block 306 is half
Sphere smashes first 307 and squeezes lower edgeyAxis positive direction moves △yDistance, edgexAxis negative direction moves △xDistance after, contact at this time
PointB(X 0 ,Y 0 +△y) tangent line withxAxle clamp angle isθIf contact point under original stateAIt arrivesxThe vertical range of axis ist, then have
f(Y 0 )=t (8)
According to Figure 12 or Figure 13, have
△x=f(Y 0 +△y)-f(Y 0 ) (9)
And have
In nonlinear spring-slide block assemblyF y =2kx/tanθIt still sets up, then has
Formula (11) is the universal relation expression formula that hemisphere smashes first 307 stress and displacement, when 306 curvilinear function of curved surface sliding block
When known, you can find outF y With △yBetween physical relationship.
It is obtained simultaneously by formula (10)
Formula (12) and formula (13) are substituted into formula (11) to obtain
Then stake top restraining momentTWith stake top cornerαFinal relationship be：
In formula,a,t,kIt is constant, when sliding block is arranged to curved form, stake top restraining momentTWith stake top cornerαBetween be in
Nonlinear function, and stake top restraining momentTWith stake top cornerαIncrease and is gradually reduced.
It is obtained simultaneously by formula (10)
Formula (18) and formula (19) are substituted into formula (11) to obtain
Then stake top restraining momentTWith stake top cornerαFinal relationship be：
In formula,a,t,kIt is constant, when sliding block is arranged to curved form, stake top restraining momentTWith stake top cornerαBetween be in
Nonlinear function, and stake top restraining momentTWith stake top cornerαIncrease and is gradually reduced.
It these are only the embodiment of the present invention, be not intended to limit the scope of the invention, it is every to be said using the present invention
Equivalent structure or equivalent flow shift made by bright book content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of torque loading device of simulation stake top linearly or nonlinearly deflection constraint, it is characterised in that：Including column
（100）, torque load-on module and stake top torsional restraint module；
The column（100）Quantity be four, with Model Pile（600）Centered on rectangular setting, bottom end is fixed on support
On face；
The torque load-on module includes for being set in Model Pile（600）The separator box of stake top（201）, with the Model Pile
（600）Center line be that symmetry axis is symmetrical arranged and first end and the separator box（201）Two loading beams being fixedly connected
（202）And MTS actuator（203）；
The loading beam（202）With MTS actuator（203）In the same plane parallel with supporting surface；
The MTS actuator（203）Perpendicular to the loading beam（202）, loading head and the loading beam（202）Connection, and with
The Model Pile（600）Center line for symmetry axis be symmetrical arranged；
The stake top torsional restraint module includes gear（301）, mounting box（302）, Hookean spring-slide block assembly, nonlinear elasticity
Spring-slide block assembly and ratch（303）；
The gear（301）Central part and the separator box（201）Top surface be fixedly connected；
The mounting box（302）Quantity be four, be fixed on the column（100）Top；
The quantity of the Hookean spring-slide block assembly and nonlinear spring-slide block assembly is two, is arranged in the mounting box
（302）It is interior and be arranged diagonal；
Hookean spring-the slide block assembly includes being slidably arranged in the mounting box（302）Interior inclined plane slide block（304）And even
Connect the inclined plane slide block（304）And mounting box（302）The spring of inner wall（305）；
The inclined plane slide block（304）And spring（305）Quantity be two, and the inclined plane slide block（304）Inclined-plane it is opposite
Setting；
Nonlinear spring-the slide block assembly includes being slidably arranged in the mounting box（302）Interior curved surface sliding block（306）And
Connect the curved surface sliding block（306）And mounting box（302）The spring of inner wall（305）；
The curved surface sliding block（306）And spring（305）Quantity be two, and the curved surface sliding block（306）Curved surface it is opposite
Setting；
The inclined plane slide block（304）With curved surface sliding block（306）In the same slip plane parallel with the supporting surface；
The ratch（303）Pass through sawtooth portion on the body of rod and the gear（301）Engagement, the mounting box is stretched at both ends
（302）It is interior and be provided with for squeezing the inclined plane slide block（304）Or curved surface sliding block（306）Hemisphere smash head（307）.
2. the torque loading device of simulation stake top linearly or nonlinearly deflection constraint according to claim 1, feature exist
In the stake top torsional restraint module further includes link（308）And sleeve（309）；
The link（308）Including the first connecting rod being oppositely arranged and second connecting rod and connection first connecting rod midpoint and second
The third connecting rod at connecting rod midpoint；
The sleeve（309）It is arranged at the second connecting rod both ends；
The first connecting rod is used to be connected with the mounting box of nonlinear spring-slide block assembly（302）With the linear bullet of setting
The mounting box of spring-slide block assembly（302）；
The ratch（303）The upper smooth body of rod positioned at sawtooth portion both sides passes through the sleeve（309）, and can be along the sleeve
（309）Axial movement.
3. the torque loading device of simulation stake top linearly or nonlinearly deflection constraint according to claim 2, feature exist
In the ratch（303）Sawtooth portion be it is flat, be located at sawtooth portion both sides the smooth body of rod be it is cylindric；
The sleeve（309）Section be square, be provided on internal four angles and the smooth body of rod roll cooperation
Ball（310）.
4. the torque loading device of stake top linearly or nonlinearly deflection constraint is simulated according to claim 1-3 any one of them,
It is characterized in that, the inclined plane slide block（304）With curved surface sliding block（306）With mounting box（302）The side of inner wall contact is provided with
Idler wheel（311）；
The mounting box（302）Upper inside walls and downside inner wall on be provided with and the idler wheel（311）The sliding slot of cooperation.
5. the torque loading device of stake top linearly or nonlinearly deflection constraint is simulated according to claim 1-3 any one of them,
It is characterized in that, the gear（301）For blade type hollow out gear, including ring part that outer edge is sawtooth, it is arranged described
The blade of the central part at ring part center and the inward flange and the central part of the connection ring part.
6. the torque loading device of stake top linearly or nonlinearly deflection constraint is simulated according to claim 1-3 any one of them,
It is characterized in that, the separator box（201）Inner peripheral surface and Model Pile（600）The peripheral surface of stake top agrees with, including two can divide
From babinet；
Two babinets are with the Model Pile（600）Center line be symmetrical axial symmetry be set in the Model Pile（600）'s
Stake top is connected by split bolt；
The loading beam（202）For I-steel, with the separator box（201）Welding, with the MTS actuator（203）Load
Hook bolt connects；
The gear（301）With the separator box（201）It is bolted.
7. the torque loading device of simulation stake top linearly or nonlinearly deflection constraint according to claim 6, feature exist
In being welded with multiple ribbed stiffeners between two edges of a wing of the I-steel（204）.
8. the torque loading device of simulation stake top linearly or nonlinearly deflection constraint according to claim 1, feature exist
In further including for fixing MTS actuator（203）The counter force wall of end（400）.
9. the torque loading device of simulation stake top according to claim 1 or 8 linearly or nonlinearly deflection constraint, feature
It is, further includes being used for fixed model stake（600）Model casing（500）, the model casing（500）Model clay is inside filled.
10. a kind of method of simulation stake top linearly or nonlinearly deflection constraint, which is characterized in that the method is based on claim
1-9 any one of them simulate stake top linearly or nonlinearly deflection constraint torque loading device implement, include the following steps：
S1. MTS actuator is opened（203）, to loading beam（202）Apply a pair of couple of force equal in magnitude, direction is opposite, and leads to
Cross separator box（201）Torque is acted on into Model Pile（600）Stake top, band moving gear（301）It rotates together；
S2. pass through gear（301）By Model Pile（600）The rotation displacement of stake top amplifies, and drives ratch（303）Movement, ratch
（303）The hemisphere at both ends smashes head（307）Squeeze the Hookean spring-slide block assembly being diagonally arranged or nonlinear spring-sliding block group
Part, inclined plane slide block（304）Or curved surface sliding block（306）Compressed spring（305）, realize the constraint of stake top linear rigidity or non-linear rigidity
Constraint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810119082.XA CN108360577B (en) | 2018-02-06 | 2018-02-06 | Simulate the torque loading device and method of stake top linearly or nonlinearly deflection constraint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810119082.XA CN108360577B (en) | 2018-02-06 | 2018-02-06 | Simulate the torque loading device and method of stake top linearly or nonlinearly deflection constraint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360577A true CN108360577A (en) | 2018-08-03 |
| CN108360577B CN108360577B (en) | 2019-11-08 |
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| CN109750693A (en) * | 2019-03-26 | 2019-05-14 | 青岛理工大学 | Offshore bearing platform pile torsion test device |
| CN113533028A (en) * | 2021-08-18 | 2021-10-22 | 天津大学 | Multi-degree-of-freedom elastic rotation constraint simulation system |
| CN113884289A (en) * | 2021-09-27 | 2022-01-04 | 天津大学 | End part restraint device for deep water steel catenary riser contact section test platform |
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| CN113884289A (en) * | 2021-09-27 | 2022-01-04 | 天津大学 | End part restraint device for deep water steel catenary riser contact section test platform |
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| CN108360577B (en) | 2019-11-08 |
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