CN110409443A - The vibrohammer and pile sinking process for reducing vibration and influencing are deformed based on radiation - Google Patents
The vibrohammer and pile sinking process for reducing vibration and influencing are deformed based on radiation Download PDFInfo
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- CN110409443A CN110409443A CN201910691958.2A CN201910691958A CN110409443A CN 110409443 A CN110409443 A CN 110409443A CN 201910691958 A CN201910691958 A CN 201910691958A CN 110409443 A CN110409443 A CN 110409443A
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- 230000005855 radiation Effects 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 35
- 230000001133 acceleration Effects 0.000 claims description 33
- 238000005253 cladding Methods 0.000 claims description 29
- 238000009413 insulation Methods 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 22
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 6
- 241000282693 Cercopithecidae Species 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000005846 sugar alcohols Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses the vibrohammer for reducing vibration and influencing, including radiation deformation device, rotary shaft, driving device and pedestal is deformed based on radiation, the radiation deformation device includes radiation modified strip and sequentially connected power supply, rectification circuit and electromagnetic wave transmitter；The invention also discloses the pile sinking process for reducing the vibrohammer that vibration influences is deformed based on radiation, all there is no eccentricity excitation power before vibrohammer being allowed to reach working frequency, and when vibrohammer reaches working frequency, just gradually generates eccentricity excitation power and sinks to stake in soil.
Description
Technical field
The invention belongs to the pile vibrosinking fields of geotechnical engineering, more particularly to the vibration for reducing vibration and influencing is deformed based on radiation
Dynamic pile monkey and pile sinking process.
Background technique
, can be in stake top portion static loading to which stake to be pressed into soil layer in geotechnical engineering piling construction, it can also be in stake
Stake is squeezed into soil layer with shock loading by top, but larger to surrounding environment influence under impact loading, therefore in building woods
The method of this impact piling in vertical urban district is often forbidden to use.Also have at present and hammers into shape that stake is driven to generate in stake top clamping vibration
The vertical sustained vibration of certain frequency, the side friction and end resistance of stake and soil reduce in this process, so that stake be sunk
Enter in ground, this method is in contrast smaller to surrounding environment influence, but this vibration hammer is by pairs of eccentric matter
Gauge block rotation generates vertical exciting force, and the rotational frequency of eccentric massblock is gradually increased and wanted by zero during starting
Pass through the resonant frequency of ground, up to reaching stable work rotational frequency, and the rotational frequency of eccentric massblock passes through vibration
Foundation vibration obviously increases when hammer-stake-foundation System resonant frequency, and excessive vibration especially can be caused to close to buildings in urban district
It is dynamic, therefore this vibration hammer is limited in the use in urban district.Therefore people, which have also been developed, exempts from resonate pile monkey, i.e. multiple groups bias matter
When gauge block rotational frequency is near vibration hammer-stake-foundation System resonant frequency, the vertical and horizontal direction that eccentric massblock generates swashs
Vibration power is cancelled out each other, and would not generate vibration to ground when eccentric massblock accelerates rotation to pass through resonant frequency in this way influences,
And eccentric massblock revolving speed reaches the horizontal direction exciting force that multiple groups eccentric massblock after stable working frequency generates and cancels out each other
And vertical exciting force is overlapped mutually, so that a vibration-sunk be driven to enter ground.This pile monkey of exempting to resonate is because to adjacent building
Object influences very little, therefore application of succeeding in the intensive urban district of building, but it is this exempt from resonance pile monkey it is at high price and
Far more than common vibration hammer price.Therefore a kind of vibrohammer is needed, it has distressed structure, the matter of deformation at room temperature structure
Heart distressed structure in rotating shaft center, heating can deform and its mass center deviates rotating shaft center, therefore start in vibrohammer
During being gradually increased to working frequency by zero afterwards, distressed structure keeps room temperature and will not generate eccentric force, works as vibrohammer
Frequency when reaching working frequency, distressed structure deformation leads to eccentric force, this eccentric force, that is, vibration hammer exciting force in this way may be used
To avoid because initiation culture passes through vibration hammer-stake-foundation System resonant frequency when cause close to buildings to vibrate excessive ask
Topic.
Summary of the invention
The present invention in order to when common vibrohammer being overcome to start excited frequency by zero increase to during working frequency because
The problem passed through vibration hammer-stake-foundation System resonant frequency and cause ambient environment vibrations excessive, in order to allow vibrohammer to reach
All there is no eccentricity excitation power before to working frequency, and when vibrohammer reaches working frequency, just gradually generates eccentricity excitation power, this
Invention provides the vibrohammer for deforming based on radiation and reducing vibration and influencing.
Technical solution of the present invention: being deformed based on radiation and reduce the vibrohammer for vibrating influence, including radiation deformation device,
Rotary shaft, driving device and pedestal；
The radiation deformation device includes radiation modified strip and sequentially connected power supply, rectification circuit and electromagnetic radiation
Device；Radiation modified strip can deform under electromagenetic wave radiation and centroid position changes, and radiates modified strip in electromagnetism amplitude
It restores to the original state after penetrating or mass center restores to initial position；
It is fixed on the rotary shaft to radiate modified strip, driving device is with rotation axis connection and driving rotary shaft rotation, driving fill
It sets and is fixedly connected with pedestal.
Preferably, modified strip centroid position is radiated under electromagenetic wave radiation to change and not in rotating shaft center, electromagnetic wave
The centroid position for stopping radiating modified strip after radiating restores to rotating shaft center.
Preferably, the structure for radiating modified strip is the modified strip coated with electromagnetic wave absorbing coating, the electro-magnetic wave absorption
Coating generates heat after by electromagenetic wave radiation, and modified strip is that the different two-ply bonding of coefficient of thermal expansion is formed by stacking, the bonding overlapping
Two-ply heating after because coefficient of thermal expansion difference due to warpage occurs, thus change radiation modified strip mass center, radiation modified strip not
Restore original shape when heated and radiates the mass center of modified strip in rotating shaft center；Or radiation modified strip is the single material of homogeneous
Material, homogeneous homogenous material deform in electromagenetic wave radiation, and electromagnetic wave stops restoring to the original state when radiation；
Or the structure of radiation modified strip is sequentially connected first bar, the first transform node, the second bar, the second deformation section
Point, third bar, first transform node are the flexible closure pipe comprising mushy stage transition material, the first transform node and second
Transform node structure is identical, and the second bar is fixedly connected with rotary shaft.Preferably, flexible closure pipe transmissive ultraviolet light, mushy stage
Transition material becomes liquid from solid-state under action of ultraviolet radiation；At this moment electromagnetic wave transmitter is ultraviolet emission device, electromagnetic wave
When transmitter emits ultraviolet light.Preferably, when mushy stage transition material becomes liquid from solid-state under action of ultraviolet radiation, can
Solid-state is changed by liquid under light-exposed effect, mushy stage transition material is using sugar alcohol as skeleton, the substance of the multiple azo groups of combination.
When rotary shaft frequency passes through vibration hammer-stake-foundation System resonant frequency, electromagnetic wave transmitter does not emit ultraviolet light, and first
The mushy stage transition material of transform node and the second transform node is that solid-state, the first bar and the second bar are curved by the first transform node
Song connection, the second bar and third bar show as first shape by the bending connection of the second transform node, radiation modified strip, and radiation becomes
The mass center of shape item radiates modified strip and does not generate exciting force in rotating shaft center；When rotary shaft frequency reaches working frequency, electromagnetism
Wave launcher emits ultraviolet light to the first transform node, and the mushy stage transition material in the first transform node is liquid, is being centrifuged
Power acts on lower first bar and the second bar is linearly connected by the first transform node, and radiation modified strip shows as the second shape, spoke
The mass center of modified strip is penetrated not in rotating shaft center, modified strip is radiated and generates exciting force；After stake is sink to designated depth, electromagnetic wave hair
Emitter emits ultraviolet light to the second transform node, and the mushy stage transition material in the second transform node is liquid, in centrifugation masterpiece
It is linearly connected with lower second bar and third bar by the second transform node, radiation modified strip shows as third shape, and radiation becomes
The mass center of shape item radiates modified strip and does not generate exciting force in rotating shaft center, then gradually lowers rotary shaft rotating speed to 0.
Preferably, the driving device is motor or diesel engine.
Preferably, the electromagnetic wave transmitter is magnetron and transmitting microwave.Preferably, the electromagnetic wave absorbing coating is
Ferrite or ferrite and carbon fiber be composite mixed form or ferrite with graphite is composite mixed forms.
Preferably, the radiation modified strip is covered with insulation cladding, and insulation cladding bottom is connected with pedestal, and rotary shaft passes through heat preservation
Shell rotation；Power supply, rectification circuit and electromagnetic wave transmitter are placed in insulation cladding；Preferably, insulation cladding is furnished with air-conditioning cold air pump,
Cooling input hole and cooling delivery outlet are provided on insulation cladding, the cold air that air-conditioning cold air pump generates is inputted by cooling down input hole again by cold
But delivery outlet exports.Preferably, the material of insulation cladding is containing bladdery ceramics, and insulation cladding inner wall is coated with titanium dioxide, contains
Bladdery ceramics can play heat-blocking action, and the coating of titanium dioxide of inner wall can accelerate spoke with reflective thermal radiation in this way
Penetrate the temperature-rise period of modified strip.Gas can only be flowed by cooling input hole and cooling delivery outlet and outside air in insulation cladding
It is logical.
Preferably, vibration hammer of the invention is furnished with balance adjustments structure.The balance adjustments structure includes disk and first
Centroid position adjuster and the second centroid position adjuster；First centroid position adjuster and the second centroid position adjuster are mutual
It is fixed on disk in an angle of 90 degrees.First centroid position adjuster is stretched comprising the first closure plate, the second closure plate, round tube, mangneto
Contracting bar, mass block, spring, coil and mass center finely tune power supply, first closure plate, spring, mass block, magnetostrictive bar and the
Two closure plates are sequentially connected and are located inside round tube, and spring is fixedly connected with the first closure plate, magnetostrictive bar and the second closing
Piece is fixedly connected, and mass block can slide in round tube, and first closure plate and the second closure plate are fixed with round tube connect respectively
It connects, the coil is wrapped in circular tube external, and coil is connect with mass center fine tuning power supply；Second centroid position adjuster and the first mass center
The structure of position control is identical；Disk is fixed on the rotary shaft.When mass center finely tunes power supply and is not powered to coil, disk, the
Total mass center of one centroid position adjuster and the second centroid position adjuster is in rotating shaft center.When placing round tube, in round tube
Spring is than magnetostrictive bar closer to rotating shaft center.
Preferably, acceleration transducer is fixedly mounted on pedestal, the acceleration transducer is bidirectional acceleration sensing
Device can measure horizontal and vertical acceleration simultaneously.
The pile sinking process for reducing the vibrohammer that vibration influences is deformed based on radiation, is included the following steps:
Step 1: stake being stood on above foundation soil vertically, reduces vibration by stake, fixture, based on radiation deformation from bottom to up
The vibrohammer of influence links together, wherein being deformed based on radiation, the pedestal of the vibrohammer influenced is vibrated in reduction and fixture connects
It connects；
Step 2: starting driving device, driving device drives rotary shaft to progressively increase to working speed from revolving speed for 0, at this
Radiation modified strip shows as first shape during a and its mass center is located at rotating shaft center；
Step 3: after rotary shaft rotating speed reaches working speed, electromagnetic wave transmitter emits electromagnetic wave, and radiation modified strip exists
It deforms under electromagenetic wave radiation and centroid position changes, radiation modified strip shows as the second shape and its mass center deviates rotation
Spindle central, in this way radiation modified strip generate unbalanced centrifugal force to rotary shaft in rotary course, this it is unbalanced from
Mental and physical efforts, that is, exciting force, stake is in the effect of this exciting force sinks to burying；
Step 4: stake is sunk in soil after designated depth, stops electromagenetic wave radiation, is at this moment radiated modified strip and is become first shape again
And mass center is located at rotating shaft center, at this moment radiates modified strip and does not generate exciting force, then gradually decreases the revolving speed of rotary shaft to 0；
Or under Electromagnetic Field, radiation modified strip is third shape, and the total mass center for radiating modified strip restores to rotating shaft center, this
When radiation modified strip do not generate exciting force, then gradually decrease the revolving speed of rotary shaft to 0.
Preferably, when electromagnetic wave transmitter transmitting microwave, when electromagnetic wave is microwave, in step 3, modified strip is radiated in electromagnetism
It generates heat and deforms and centroid position changes under wave radiation, radiation modified strip shows as the second shape and its mass center deviates
Rotating shaft center, in this way radiation modified strip generate unbalanced centrifugal force to rotary shaft in rotary course, this is unbalanced
Centrifugal force, that is, exciting force, stake is in the effect of this exciting force sinks to burying；
Preferably, when electromagnetic wave transmitter is used to emit microwave, when electromagnetic wave is microwave, in step 4, native middle finger is sunk in stake
After depthkeeping degree, air-conditioning cold air pump generates cold air and cold air is by cooling down input hole input again by cooling delivery outlet output, and cold air is being protected
Cool down in warm shell to radiation modified strip, at this moment radiation modified strip becomes first shape again and mass center is located at rotating shaft center, this
When radiation modified strip do not generate exciting force, then gradually decrease the revolving speed of rotary shaft to 0.
Preferably, when electromagnetic wave transmitter is used to emit ultraviolet light, when electromagnetic wave is ultraviolet light, in step 2, in rotary shaft
When frequency passes through vibration hammer-stake-foundation System resonant frequency, electromagnetic wave transmitter does not emit ultraviolet light, the first transform node
Mushy stage transition material with the second transform node is that solid-state, the first bar and the second bar are connected by the bending of the first transform node,
By the bending connection of the second transform node, radiation modified strip shows as first shape, radiates modified strip for second bar and third bar
Mass center radiates modified strip and does not generate exciting force in rotating shaft center；In step 3, when rotary shaft frequency reaches working frequency, electricity
Magnetic wave transmitter emits ultraviolet light to the first transform node, and the mushy stage transition material in the first transform node is liquid, from
The first bar and the second bar are linearly connected by the first transform node under mental power function, and radiation modified strip shows as the second shape,
The mass center of modified strip is radiated not in rotating shaft center, modified strip is radiated and generates exciting force；In step 4, when stake is sink to designated depth
Afterwards, electromagnetic wave transmitter emits ultraviolet light to the second transform node, and the mushy stage transition material in the second transform node is liquid,
The second bar and third bar are linearly connected by the second transform node under the action of the centrifugal force, and radiation modified strip shows as third shape
Shape radiates the mass center of modified strip in rotating shaft center, radiates modified strip and do not generate exciting force, then gradually lower rotary shaft rotating speed
To 0.
Preferably, vibrohammer uses in pairs when pile sinking, and the exciting force phase in the horizontal direction that each pair of vibrohammer generates
It mutually offsets and is vertically being overlapped mutually.In order to generate such vibrating effect, two in each pair of vibrohammer can be made to vibrate
The direction of rotation of pile monkey is opposite.
Preferably, when radiating modified strip in step 4 because residual deformation without reverting to first shape and mass center does not have completely
Have when being located at rotating shaft center, or mass center when not being fully returned to rotating shaft center of radiation modified strip, starting balance is micro-
Structure is adjusted, changes the centroid position of the first centroid position adjuster and the second centroid position adjuster respectively, passes through in coil
Current induced magnetic field changes the position of mass block to change the length of magnetostrictive bar, is in this way 90 degree by changing
The position of the synthesis mass center of the first centroid position adjuster and the second centroid position adjuster that angle is placed, becomes to offset radiation
Shape item is because of the centrifugal force that generates when mass center is not at rotating shaft center.It may determine that by the acceleration that acceleration transducer measures
Whether vibrohammer generates exciting force, when radiation modified strip is because residual deformation without reverting to first shape and mass center does not have completely
Have when being located at rotating shaft center, or radiation modified strip mass center when being not at rotating shaft center, then the acceleration measured is not
Zero, the in this way position by adjusting mass block in balance adjustments structure, until the acceleration that acceleration transducer measures is zero, this
When show that the centrifugal force that mass center in balance adjustments structure generates counteracts radiation modified strip because mass center is not at rotating shaft center
When the centrifugal force that generates.
Preferably, adjusting the first centroid position adjuster and the second centroid position adjuster makes the acceleration that pedestal measures
0 process are as follows: the phase angle of rotary shaft rotation generation is set as a, the phase angle of the round tube of the first centroid position adjuster is b, the
The phase angle of the round tube of two centroid position adjusters is b+90, and the initial value of phase angle a and b is all 0 here and unit is angle,
If the acceleration measured is not 0, if the horizontal direction acceleration that t moment measures is Ax, vertical acceleration is Ay, the first mass center position is taken
The displacement adjustment factor for setting mass block in adjuster is C1, and the displacement adjustment factor of mass block is in the second centroid position adjuster
C2, then the mobile distance of mass block is C1. [Ax.cos (a)+Ay.sin (a)] in the first centroid position adjuster, then the second matter
The mobile distance of mass block is C2. [Ax.cos (a+90)+Ay.sin (a+90)] in heart position control；In different moments by upper
The mode of stating adjusts the position of mass block in the first centroid position adjuster and the second centroid position adjuster, until the acceleration of pedestal
Degree is 0.
Preferably, it when modified strip is that the different two-ply bonding of coefficient of thermal expansion is formed by stacking, provides Precise control and swashs
Power size of shaking and the method that control exciting force is 0 when passing through hammer-stake-ground resonant frequency are as follows:
Be related to it is some write a Chinese character in simplified form and symbol, the following are notes:
M: the number of nodes of each unit
Ni: interpolating function N is defined on i-th of node of each uniti(1≤i≤m),NiIt is in unit
The function of any point coordinate (x, y)
α1: the thermal expansion coefficient of the first laminate
α2: the thermal expansion coefficient of the second laminate
[D1]: the stress and strain relational matrix of the first laminate
[D2]: the stress and strain relational matrix of the second laminate
[B]: the relational matrix for being displaced and straining on each unit
[B]T: the transposed matrix of [B]
Ω: the integral domain region of unit
[Ke]type1: the matrix of each unit of the first laminate,
[Ke]type2: the matrix of each unit of the second laminate,
T: temperature
{fe}type1: the composition force vector on each cell node of the first laminate
{fe}type2: the composition force vector on each cell node of the second laminate
{ue}type1: the motion vector on the first laminate unit node
{ue}type2: the motion vector on the second laminate unit node
ux,uy: the displacement components u of any point (x, y) in unitxAnd uy
Its expression formula is respectivelyWith
ρ: density of material is ρ in unit
ω: rotary shaft angular velocity of rotation is ω,
bx: active force of the gravity to any point in unit in the direction x in rotary course
by: active force of the gravity to any point in unit in the direction y in rotary course
Active force of each unit to rotating shaft center in the direction x
Active force of each unit to rotating shaft center in the direction y
The exciting force that the iterative structure of first laminate and the second laminate generates rotating shaft center in the direction x
The exciting force that the iterative structure of first laminate and the second laminate generates rotating shaft center in the direction y
Fexcite: total exciting force that the iterative structure of the first laminate and the second laminate generates rotating shaft center
Establish local coordinate system by origin of rotating shaft center, if composition modified strip two-ply be respectively the first laminate and
Second laminate, respectively to the first laminate and the second laminate grid division, and the grid node of the first laminate and the second laminate is two
It is overlapped on laminate bonding interface；
After grid division, each grid constitutes a unit, if each unit has m node, definition is inserted on each node
Value function Ni(1≤i≤m),NiIt is the function of any point coordinate (x, y) in unit；
If the thermal expansion coefficient of the first laminate is α1, the relational matrix [D of stress and strain1], if on each unit displacement and
The relational matrix of strain is [B], [B]TIt is each by integrating to obtain the first laminate in unit area Ω for the transposed matrix of [B]
The matrix of unitIf temperature is T, the composition force vector { f on each cell nodee}type1,
Seek { fe}type1Method are as follows:
Based on [Ke]type1By the motion vector { u on cell nodee}type1With force vector { fe}type1It connects, if not
Consider influencing each other between unit, as follows:
[Ke]type1{ue}type1={ fe}type1 (2)
If the thermal expansion coefficient of the second laminate is α2, the relational matrix [D of stress and strain2], if on each unit displacement and
The relational matrix of strain is [B], [B]TIt is each by integrating to obtain the second laminate in unit area Ω for the transposed matrix of [B]
The matrix of unitIf temperature is T, the power on each cell node forms force vector
{fe}type2, seek { fe}type2Method are as follows:
Based on [Ke]type2By the displacement { u on cell nodee}type2With power { fe}type2It connects, if not considering unit
Between influence each other, it is as follows:
[Ke]type2{ue}type2={ fe}type2 (4)
Consider the interaction force between unit, all units on the first laminate and the second laminate are all listed such as formula
(3) and equation group shown in formula (4), because the grid node of the first laminate and the second laminate on bonding interface is to be overlapped,
So the displacement on each cell node can be can be obtained these equation groups with simultaneous solution；
If solving the direction x and y displacement on obtained each cell node is respectively uix,uiy(1≤i≤m), if in unit
Any point coordinate is (x, y), and the displacement components u of any point (x, y) in unit can be obtained in this wayxAnd uy, expression formula is respectivelyWithIf density of material is ρ in unit, rotary shaft angular velocity of rotation is ω, in rotary course
Active force of the gravity to any point in unit in the direction x is bx, the direction y active force be by, then can calculate each unit
Active force to rotating shaft center in the direction x and y is respectivelyWith
Active force of the unit in the direction x:
Active force of the unit in the direction y:
By the active force of all unitsWithBe superimposed respectively in the direction x and the direction y, obtain the first laminate and
The exciting force that rotating shaft center is generated under the iterative structure same temperature warpage of second laminateWith
Then available exciting forceWith not equality of temperature under specified angular velocity of rotation
Angle value calculates exciting force FexciteSize, draw temperature value and exciting force FexciteRelation curve；When needing to specify in step 3
The size of exciting force when pile sinking, can be quickly according to temperature value and exciting force FexciteRelation curve temperature value, thus plus
Hot first laminate and the second laminate are to assigned temperature, to apply specified exciting force；When needing in step 2 and step 4 to stake
The exciting force of application is 0, can pass through temperature value and exciting force FexciteRelation curve determine apply temperature value, to make
Exciting force F when the speed of rotary shaft passes through hammer-stake-ground resonant frequencyexciteIt is electric in 0, such as step 2 and step 4
Magnetic wave transmitter does not work, and keeping the temperature of the first laminate and the second laminate is to make exciting force FexciteFor 0 temperature value.
Illustrate stress-strain relation matrix [D1] form, if modulus be E, Poisson's ratio be v take KE=E/ [3 (1-
2v)], G=E/ [2 (1+v)], then [D1] form are as follows:
Illustrate a kind of desirable interpolating function form of four node units such as Figure 10 (b) shown in and corresponding displacement with
Strain stress relation matrix [B], if the unit lower left corner is first node, other nodes press inverse time needle sort, if a is unit horizontal to length
The half of degree, b are the half of unit vertical extension, establish local coordinate system by origin of unit center, then each node i is corresponding
Interpolating function NiAre as follows:
N1=(x-a) (y-b)/4
N2=(x+a) (y-b)/4
N3=(x+a) (y+b)/4
N4=(x-a) (y+b)/4
[if N]1×4Expression formula are as follows: [N]1×4=[N1,N2,N3,N4], then it is displaced the expression formula with strain stress relation matrix [B]
Are as follows:
The beneficial effects of the invention are as follows excited frequencies when common vibrohammer being overcome to start to increase to working frequency by zero
The problem for causing ambient environment vibrations excessive because passing through vibration hammer-stake-foundation System resonant frequency in the process is shaken to allow
Dynamic pile monkey, which reaches before working frequency, does not all have eccentricity excitation power, and when vibrohammer reaches working frequency just gradually generates and eccentric swashs
Vibration power, the present invention provides the vibrohammer for reducing vibration influence is deformed based on radiation.
Detailed description of the invention
Fig. 1 is the schematic three dimensional views that radiation modified strip and disk of the invention are connect with driving device；
Fig. 2 be vibrohammer of the invention be furnished with insulation cladding when schematic three dimensional views；
Fig. 3 is thermal-insulating casing structure schematic cross-section of the invention；
Fig. 4 is the vibrohammer side view equipped with acceleration transducer of the invention；
Fig. 5 is the deformation schematic diagram of radiation modified strip of the invention；
Fig. 6 is that vibrohammer of the invention is assembled in the schematic diagram in stake；
Fig. 7 is mass center fine tuning structure schematic diagram on balancing frame of the invention
The structural schematic diagram of Fig. 8 the first centroid position adjuster
The round tube internal cross section schematic diagram of Fig. 9 the first centroid position adjuster
The grid dividing schematic diagram of first laminate and the second laminate in Figure 10 modified strip
1. ground in figure, 2., 3. fixtures, 4. vibrohammers, 5. vertical circulation direction of excitation, 6. radiation modified strips, 7.
Rotary shaft, 8. driving devices, 9. pedestals, 10. power supplys, 11. rectification circuits, 12. disks, 13. insulation claddings, 14. air-conditioning cold air pumps,
15. cooling input hole, 16. cooling delivery outlets, 17. contain bladdery ceramics, 18. coating of titanium dioxide, 19. first centroid positions
Adjuster, 20. second centroid position adjusters, 21. first closure plates, 22. second closure plates, 23. round tubes, 24. magnetostriction
Bar, 25. mass blocks, 26. springs, 27. coils, 28. mass centers fine tuning power supply, 29. acceleration transducers, 30. electromagnetic wave transmitters,
31. modified strip, 32. electromagnetic wave absorbing coatings, 33. first bars, 34. first transform nodes, 35. second bars, 36. second deformation sections
Point, 37. third bars, 38. first laminates, 39. second laminates, the grid divided on 40. first laminates and the second laminate, 41. is single
Member, 42, node
Specific embodiment
In order to realize the present invention technological means, character of innovation, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
As the vibrohammer for reducing vibration and influencing, including radiation deformation device, rotation are deformed in Fig. 1-Figure 10 based on radiation
Axis 7, driving device 8 and pedestal 9；
As shown in figure 3, the radiation deformation device includes radiation modified strip 6 and sequentially connected power supply 10, rectification circuit
11 and electromagnetic wave transmitter 30；Radiation modified strip 6 can deform under electromagenetic wave radiation and centroid position changes；
As shown in Figure 1, radiation modified strip 6 is fixed in rotary shaft 7, driving device 8 connect with rotary shaft 7 and drives rotation
Axis 7 rotates, and driving device 8 is fixedly connected with pedestal 9；
The structure of radiation modified strip 6 is to become as shown in figure 5, be that 31 outer application of modified strip has electromagnetic wave absorbing coating 32
The structure of shape item 31 is that the different two-ply bonding of coefficient of thermal expansion is formed by stacking, and the electromagnetic wave absorbing coating 32 is by electromagnetism amplitude
It generates heat after penetrating, warpage occurs because of coefficient of thermal expansion difference after the two-ply heating of the bonding overlapping, to change radiation deformation
The mass center of item 6, radiation modified strip 6 restore original shape and radiate the mass center of modified strip 6 in rotating shaft center 7 when not heated；Or
The structure for radiating modified strip 6 is as shown in figure 5, being that 31 outer application of modified strip has electromagnetic wave absorbing coating 32, modified strip Room 31
Wen Shiwei first shape as shown in Fig. 5 (a), when heating, show as the second shape as shown in Fig. 5 (b), and the second shape
Mass center and the mass center of first shape be not in the same point, and modified strip 31 reverts to the first shape as shown in Fig. 5 (a) after heating
Shape, the electromagnetic wave absorbing coating 32 generate heat after by electromagenetic wave radiation；Or radiation modified strip 6 is homogeneous homogenous material, homogeneous
Homogenous material deforms in electromagenetic wave radiation, and electromagnetic wave stops restoring to the original state when radiation；
Or as shown in Fig. 5 (c) (d) (e), the structure of radiation modified strip 6 is sequentially connected first bar 33, first deformation section
Point the 34, second bar 35, the second transform node 36, third bar 37, first transform node 34 are to include mushy stage transition material
Flexible closure pipe, the first transform node 34 is identical with 36 structure of the second transform node, the second bar 35 with rotary shaft 7 is fixed connects
It connects.Preferably, flexible closure pipe transmissive ultraviolet light, mushy stage transition material become liquid from solid-state under action of ultraviolet radiation；
At this moment electromagnetic wave transmitter 30 is ultraviolet emission device.Preferably, when mushy stage transition material under action of ultraviolet radiation by solid
When state becomes liquid, solid-state is changed by liquid under visible light action, mushy stage transition material is using sugar alcohol as skeleton, combination
The substance of multiple azo groups.When 7 frequency of rotary shaft passes through vibration hammer-stake-foundation System resonant frequency, electromagnetic wave transmitter
30 do not emit ultraviolet light, and the mushy stage transition material of the first transform node 34 and the second transform node 36 is solid-state, the first bar 33
With the second bar 35 by the bending connection of the first transform node 34, the second bar 35 and third bar 37 are bent by the second transform node 36
Connection, for the mass center that radiation modified strip shows as radiating modified strip 6 such as Fig. 5 (c) first shape at 7 center of rotary shaft, radiation becomes 6
Shape item does not generate exciting force；When 7 frequency of rotary shaft reaches working frequency, electromagnetic wave transmitter 30 sends out the first transform node 34
Ultraviolet light is penetrated, the mushy stage transition material in the first transform node 34 is liquid, under the action of the centrifugal force the first bar 33 and second
Bar 35 shows as the second shape of Fig. 5 (d), radiates modified strip 6 by the first linearly connection of transform node 34, radiation modified strip 6
Mass center not at 7 center of rotary shaft, radiate modified strip 6 and generate exciting force；After stake 2 is sink to designated depth, electromagnetic wave transmitter
30 pair of second transform node 36 emits ultraviolet light, and the mushy stage transition material in the second transform node 36 is liquid, in centrifugal force
Lower second bar 35 and third bar 37 are acted on by the second linearly connection of transform node 36, radiation modified strip 6 shows as Fig. 5 (e)
Third shape radiates the mass center of modified strip 6 at 7 center of rotary shaft, radiates modified strip 6 and do not generate exciting force, then gradually lower
Rotary shaft rotating speed is to 0.
The driving device 8 is motor or diesel engine；
The electromagnetic wave transmitter 30 is magnetron and transmitting microwave；The electro-magnetic wave absorption coating 32 is ferrite or iron
Oxysome and carbon fiber be composite mixed form or ferrite with graphite is composite mixed forms；
As shown in figure 3, the radiation modified strip 6 is covered with insulation cladding 13,13 bottom of insulation cladding and pedestal 9 are connected, rotation
Axis 7 is rotated across insulation cladding 13；Power supply 10, rectification circuit 11 and electromagnetic wave transmitter 30 are placed in insulation cladding 13；Insulation cladding
13 are furnished with air-conditioning cold air pump 14, and cooling input hole 15 and cooling delivery outlet 16 are provided on insulation cladding 13, and air-conditioning cold air pump 14 generates
Cold air exported again by cooling delivery outlet 16 by cooling down the input of input hole 15；The material of insulation cladding 13 is containing bladdery ceramics
17, and 13 inner wall of insulation cladding is coated with coating of titanium dioxide 18, heat-blocking action can be played containing bladdery ceramic 17, the two of inner wall
Titania coating 18 can accelerate the temperature-rise period for radiating modified strip 6 with reflective thermal radiation in this way.Gas in insulation cladding 13
It can be circulated by cooling input hole 15 and cooling delivery outlet 16 and outside air；
The present invention is furnished with balance adjustments structure, as shown in fig. 7, the balance adjustments structure includes disk 12 and the first mass center
Position control 19 and the second centroid position adjuster 20；As shown in Figure 8 and Figure 9, the first centroid position adjuster 19 includes the
One closure plate 21, the second closure plate 22, round tube 23, magnetostrictive bar 24, mass block 25, spring 26, coil 27 and mass center fine tuning
Power supply 28, first closure plate 21, spring 26, mass block 25, magnetostrictive bar 24 and the second closure plate 22 be sequentially connected and
Inside round tube 23, spring 26 is fixedly connected with the first closure plate 21, magnetostrictive bar 24 and the fixed company of the second closure plate 22
It connects, mass block 25 can slide in round tube 23, and first closure plate 21 and the second closure plate 22 are fixed with round tube 23 respectively
Connection, the coil 27 are wrapped in outside round tube 23, and coil 27 is connect with mass center fine tuning power supply 28；Second centroid position adjuster
20 is identical with the structure of the first centroid position adjuster 19, and the first centroid position adjuster 19 and the second centroid position adjuster
20 are mutually fixed on disk 12 in an angle of 90 degrees；Disk 12 is fixed in rotary shaft 7；Mass center finely tunes power supply 28 not to coil 27
When energization, total mass center of disk 12, the first centroid position adjuster 19 and the second centroid position adjuster 20 is in rotary shaft 7
The heart；When placing round tube 23, spring 26 in round tube 23 is than magnetostrictive bar 24 closer to 7 center of rotary shaft；
As shown in figure 4, acceleration transducer 29 is fixedly mounted on pedestal 9, the acceleration transducer 29 is two-way adds
Velocity sensor can measure horizontal and vertical acceleration simultaneously.
The pile sinking process for reducing the vibrohammer that vibration influences is deformed based on radiation, is included the following steps:
Step 1: as shown in fig. 6, stake 2 is stood on vertically above 1 soil layer of ground, from bottom to up by stake 2, fixture 3, based on spoke
The vibrohammer 4 that penetrating deformation reduction vibration influences links together, wherein deforming the vibropile that reduction vibration influences based on radiation
4 pedestals 9 and fixture 3 of hammer connect；
Step 2: starting driving device 8, driving device 8 drive rotary shaft 7 to progressively increase to working speed from revolving speed for 0,
Radiation modified strip 6 shows as the first shape of Fig. 5 (a) in this process and its mass center is located at 7 center of rotary shaft, or radiation becomes
Shape item 6 shows as the first shape of Fig. 5 (c) and its mass center is located at 7 center of rotary shaft；
Step 3: after 7 revolving speed of rotary shaft reaches working speed, electromagnetic wave transmitter 30 emits electromagnetic wave, radiates modified strip
6 deform and centroid position changes under electromagenetic wave radiation, radiation modified strip 6 show as the second shape of Fig. 5 (b) and
Its mass center deviates 7 center of rotary shaft, or radiation modified strip 6 shows as the second shape of Fig. 5 (d) and its mass center deviates rotary shaft
7 centers, in this way radiation modified strip 6 generate unbalanced centrifugal force to rotary shaft 7 in rotary course, this unbalanced centrifugation
Power, that is, exciting force, stake 2 is in the effect of this exciting force sinks to burying；
Step 4: stake 2 is sunk in soil after designated depth, stops electromagenetic wave radiation, is at this moment radiated modified strip 6 and is become Fig. 5 (a) again
First shape and mass center be located at 7 center of rotary shaft, or radiate modified strip 6 under Electromagnetic Field and become the third of Fig. 5 (e)
At this moment shape and mass center is located at 7 center of rotary shaft radiates modified strip 6 and does not generate exciting force, then gradually decreases turning for rotary shaft
Speed is to 0.
Preferably, when electromagnetic wave is microwave, in step 3, radiation modified strip 6 generates heat and deforms under electromagenetic wave radiation
And centroid position changes, radiation modified strip 6 shows as the second shape of Fig. 5 (b) and its mass center deviates 7 center of rotary shaft,
Radiation modified strip 6 in this way generates unbalanced centrifugal force to rotary shaft 7 in rotary course, this unbalanced centrifugal force swashs
Vibration power, stake 2 is in the effect of this exciting force sinks to burying；
Preferably, when electromagnetic wave is microwave, in step 4, stake 2 is sunk in soil after designated depth, stops electromagenetic wave radiation, this
When radiation modified strip 6 become the first shape of Fig. 5 (a) again and mass center is located at 7 center of rotary shaft, at this moment radiation modified strip 6 does not generate
Then exciting force gradually decreases the revolving speed of rotary shaft to 0, air-conditioning cold air pump 14 generates cold air and cold air by cooling down input hole 15
Input is exported by cooling delivery outlet 16 again, and cold air cools down to radiation modified strip 6 in insulation cladding 13.
Preferably, vibrohammer 4 uses in pairs when pile sinking 2, and the exciting force that each pair of vibrohammer 4 generates is in the horizontal direction
It cancels out each other and is vertically being overlapped mutually；In order to generate such vibrating effect, two in each pair of vibrohammer 4 can be made to shake
The direction of rotation of dynamic pile monkey 4 is opposite.
Preferably, when first shape of the radiation modified strip 6 because of residual deformation without reverting to Fig. 5 (a) completely in step 4
And mass center starts balance adjustments structure when being not at 6 center of rotary shaft, by current induced magnetic field to change in coil 27
Become the length of magnetostrictive bar 24, and then change the position of mass block 25, in this way by changing the first matter placed in an angle of 90 degrees
The position of the synthesis mass center of heart position control 19 and the second centroid position adjuster 20, to offset radiation modified strip 6 because of matter
The heart is not at the centrifugal force generated when 7 center of rotary shaft.Vibration may determine that by the acceleration that acceleration transducer 29 measures
Whether pile monkey 4 generates exciting force, when radiation modified strip 6 because residual deformation without revert to completely Fig. 5 (a) first shape and
When mass center is not at 7 center of rotary shaft, then the acceleration measured is not zero, in this way by adjusting quality in balance adjustments structure
At this moment the position of block 25 shows mass block 25 in balance adjustments structure until the acceleration that acceleration transducer 29 measures is zero
The centrifugal force of generation counteracts radiation modified strip 6 because of the centrifugal force that generates when mass center is not at 7 center of rotary shaft.
Preferably, it when modified strip 31 is that the different two-ply bonding of coefficient of thermal expansion is formed by stacking, provides Precise control and swashs
Vibration power size and the method that control exciting force is 0 when passing through 4- 2- 1 resonant frequencies of ground of hammer are as follows:
Be related to it is some write a Chinese character in simplified form and symbol, the following are notes:
M: the number of nodes of each unit 41
Ni: interpolating function N is defined on each 41 i-th of node 42 of uniti(1≤i≤m),NiIt is any point in unit 41
The function of coordinate (x, y)
α1: the thermal expansion coefficient of the first laminate 38
α2: the thermal expansion coefficient of the second laminate 39
[D1]: the stress and strain relational matrix of the first laminate 38
[D2]: the stress and strain relational matrix of the second laminate 39
[B]: the relational matrix for being displaced and straining on each unit 41
[B]T: the transposed matrix of [B]
Ω: the integral domain region of unit 41
[Ke]type1: the matrix of each unit 41 of the first laminate 38,
[Ke]type2: the matrix of each unit 41 of the second laminate 39,
T: temperature
{fe}type1: the composition force vector on each 41 node of unit of the first laminate 38
{fe}type2: the composition force vector on each 41 node of unit of the second laminate 39
{ue}type1: the motion vector on 38 cell node 42 of the first laminate
{ue}type2: the motion vector on 39 cell node 42 of the second laminate
ux,uy: the displacement components u of any point (x, y) in unit 41xAnd uy
Its expression formula is respectivelyWith
ρ: density of material is ρ in unit 41
ω: 7 angular velocity of rotation of rotary shaft is ω,
bx: active force of the gravity to any point in unit 41 in the direction x in rotary course
by: active force of the gravity to any point in unit 41 in the direction y in rotary course
Active force of each unit 41 to 7 center of rotary shaft in the direction x
Active force of each unit 41 to 7 center of rotary shaft in the direction y
The exciting that the iterative structure of first laminate 38 and the second laminate 39 generates 7 center of rotary shaft in the direction x
Power
The exciting that the iterative structure of first laminate 38 and the second laminate 39 generates 7 center of rotary shaft in the direction y
Power
Fexcite: total exciting force that the iterative structure of the first laminate 38 and the second laminate 39 generates 7 center of rotary shaft
Local coordinate system is established using 7 center of rotary shaft as origin, if the two-ply of composition modified strip is respectively the first laminate
38 and second laminate 39, as shown in Figure 10 (a), respectively to 39 grid division of the first laminate 38 and the second laminate, and the first laminate
38 and second the grid node of laminate 39 be overlapped on two-ply bonding interface；
After grid division 40, each grid 40 constitutes a unit 41, if each unit 41 has m node 42, Mei Gejie
Interpolating function N is defined on point 42i(1≤i≤m),NiIt is the function of any point coordinate (x, y) in unit 41；
If the thermal expansion coefficient of the first laminate 38 is α1, the relational matrix [D of stress and strain1], if each unit 41 is upper
It moves and the relational matrix of strain is [B], [B]TFor the transposed matrix of [B], by integrating to obtain first layer in 41 region Ω of unit
The matrix of each unit 41 of plate 38If temperature is T, the composition power on each cell node 42
Vector { fe}type1, seek { fe}type1Method are as follows:
Based on [Ke]type1By the motion vector { u on cell node 42e}type1With force vector { fe}type1It connects, if
Influencing each other between unit 41 is not considered, as follows:
[Ke]type1{ue}type1={ fe}type1 (2)
If the thermal expansion coefficient of the second laminate 39 is α2, the relational matrix [D of stress and strain2], if each unit 41 is upper
It moves and the relational matrix of strain is [B], [B]TFor the transposed matrix of [B], by integrating to obtain the second layer in 41 region Ω of unit
The matrix of each unit 41 of plate 39Power composition if temperature is T, on each cell node 42
Force vector { fe}type2, seek { fe}type2Method are as follows:
Based on [Ke]type2By the displacement { u on cell node 42e}type2With power { fe}type2It connects, if not considering list
Influencing each other between member 41, as follows:
[Ke]type2{ue}type2={ fe}type2 (4)
Consider the interaction force between unit 41, all units 41 on the first laminate 38 and the second laminate 39 are all arranged
The equation group as shown in formula (3) and formula (4) out, because of the grid node of the first laminate 38 and the second laminate 39 on bonding interface
42 be to be overlapped, it is possible to which the displacement on each cell node 42 can be obtained in these equation groups of simultaneous solution；
If solving the direction x and y displacement on obtained each cell node 42 is respectively uix,uiy(1≤i≤m), if unit
Any point coordinate is (x, y) in 41, and the displacement components u of any point (x, y) in unit 41 can be obtained in this wayxAnd uy, expression formula point
It is notWithIf density of material is ρ in unit 41,7 angular velocity of rotation of rotary shaft is ω, rotation
Active force of the gravity to any point in unit 41 in the direction x is b during turningx, the direction y active force be by, then can count
Calculating active force of each unit 41 to 7 center of rotary shaft in the direction x and y is respectivelyWith
Active force of the unit 41 in the direction x:
Active force of the unit 41 in the direction y:
By the active force of all units 41WithIt is superimposed respectively in the direction x and the direction y, obtains the first laminate
38 and second laminate 39 iterative structure same temperature warpage under to 7 center of rotary shaft generate exciting forceWith
Then available exciting forceWith not equality of temperature under specified angular velocity of rotation
Angle value calculates exciting force FexciteSize, draw temperature value and exciting force FexciteRelation curve；When needing to specify in step 3
The size of exciting force when pile sinking 2, can be quickly according to temperature value and exciting force FexciteRelation curve temperature value, thus
The first laminate 38 and the second laminate 39 are heated to assigned temperature, to apply specified exciting force；When being needed in step 2 and step 4
To be 0 to the exciting force that stake 2 applies, temperature value and exciting force F can be passed throughexciteRelation curve determine apply temperature value,
Exciting force F when to make the speed of rotary shaft 7 pass through the resonant frequency of 4- 2- grounds 1 of hammerexciteFor 0, such as step 2
It does not work with 30 transmitter of electromagnetic wave in step 4, and keeping the temperature of the first laminate 38 and the second laminate 39 is to make exciting force
FexciteFor 0 temperature value.
Claims (10)
1. based on radiation deform reduce vibration influence vibrohammer, it is characterised in that: including radiation deformation device, rotary shaft,
Driving device and pedestal；The radiation deformation device includes radiation modified strip and sequentially connected power supply, rectification circuit and electromagnetism
Wave launcher；Radiation modified strip can deform under electromagenetic wave radiation and centroid position changes, and radiates modified strip in electricity
It restores to the original state after electromagnetic wave radiation or mass center restores to initial position；It is fixed on the rotary shaft to radiate modified strip, driving device
With rotation axis connection and driving rotary shaft rotation, driving device are fixedly connected with pedestal.
2. according to claim 1 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: radiation becomes
The structure of shape item is the modified strip coated with electromagnetic wave absorbing coating, and the electromagnetic wave absorbing coating is sent out after by electromagenetic wave radiation
Heat, modified strip is that the different two-ply bonding of coefficient of thermal expansion is formed by stacking, because heat is swollen after the two-ply heating of the bonding overlapping
Swollen rate is different and warpage occurs, to change the mass center of radiation modified strip, radiation modified strip restore when not heated original shape and
The mass center of modified strip is radiated in rotating shaft center；Or radiation modified strip is homogeneous homogenous material, homogeneous homogenous material is in electromagnetism
It deforms when wave radiation, and electromagnetic wave stops restoring to the original state when radiation；Or the structure of radiation modified strip is sequentially connected
First bar, the first transform node, the second bar, the second transform node, third bar, first transform node are to turn comprising mushy stage
The flexible closure pipe of conversion materials, the first transform node and the second transform node structure are identical, and the second bar is fixedly connected with rotary shaft.
3. according to claim 2 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: the electricity
When magnetic wave transmitter is magnetron and transmitting microwave, the electromagnetic wave absorbing coating is that ferrite or ferrite and carbon fiber are multiple
Conjunction adulterate or ferrite with graphite is composite mixed forms；Or when electromagnetic wave transmitter transmitting ultraviolet light, flexible closure pipe
Transmissive ultraviolet light, mushy stage transition material become liquid from solid-state under action of ultraviolet radiation.
4. according to claim 1 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: the spoke
It penetrates modified strip and is covered with insulation cladding, insulation cladding bottom is connected with pedestal, and rotary shaft is rotated across insulation cladding；Power supply, rectification circuit
It is placed in insulation cladding with electromagnetic wave transmitter；Insulation cladding is furnished with air-conditioning cold air pump, and cooling input hole and cold is provided on insulation cladding
But delivery outlet, the cold air that air-conditioning cold air pump generates is by cooling down input hole input again by cooling delivery outlet output；The material of insulation cladding
For containing bladdery ceramics, and insulation cladding inner wall is coated with titanium dioxide, can play heat-blocking action, inner wall containing bladdery ceramics
Coating of titanium dioxide can with reflective thermal radiation, can accelerate in this way radiate modified strip temperature-rise period；Gas in insulation cladding
It can be circulated by cooling input hole and cooling delivery outlet and outside air.
5. according to claim 1 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: vibropile
Hammer is furnished with balance adjustments structure；The balance adjustments structure includes disk and the first centroid position adjuster and the second centroid position
Adjuster；First centroid position adjuster and the second centroid position adjuster are mutually in that an angle of 90 degrees is fixed on disk.
6. according to claim 1 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: the first matter
Heart position control includes the first closure plate, the second closure plate, round tube, magnetostrictive bar, mass block, spring, coil and mass center
Power supply is finely tuned, first closure plate, spring, mass block, magnetostrictive bar and the second closure plate are sequentially connected and are located at round tube
Inside, spring are fixedly connected with the first closure plate, and magnetostrictive bar and the second closure plate are fixedly connected, and mass block can be in round tube
Interior sliding, first closure plate and the second closure plate are fixedly connected with round tube respectively, and the coil is wrapped in circular tube external, line
Circle is connect with mass center fine tuning power supply；The structure of second centroid position adjuster and the first centroid position adjuster is identical；Disk is solid
Determine on the rotary shaft；When mass center finely tunes power supply not to coil energization, disk, the first centroid position adjuster and the second mass center position
Total mass center of adjuster is set in rotating shaft center；When placing round tube, spring in round tube is than magnetostrictive bar closer to rotary shaft
Center.
7. according to claim 1 deform the vibrohammer for reducing vibration and influencing based on radiation, it is characterised in that: in pedestal
Upper fixed installation acceleration transducer, the acceleration transducer are Double direct acceleration sensor, can measure simultaneously it is horizontal and
Vertical acceleration.
8. according to claim 1-7 deform the pile sinking side for reducing the vibrohammer that vibration influences based on radiation
Method, it is characterised in that: include the following steps:
Step 1: stake being stood on above foundation soil vertically, is influenced from bottom to up by stake, fixture, based on radiation deformation reduction vibration
Vibrohammer link together, connected wherein deforming the pedestal of vibrohammer for reducing vibration and influencing based on radiation with fixture；
Step 2: starting driving device, driving device drives rotary shaft to progressively increase to working speed from revolving speed for 0, in this mistake
Radiation modified strip shows as first shape in journey and its mass center is located at rotating shaft center；
Step 3: after rotary shaft rotating speed reaches working speed, electromagnetic wave transmitter emits electromagnetic wave, radiates modified strip in electromagnetism
It deforms under wave radiation and centroid position changes, radiation modified strip shows as the second shape and its mass center deviates rotary shaft
Center, in this way radiation modified strip generate unbalanced centrifugal force, this unbalanced centrifugal force to rotary shaft in rotary course
That is exciting force, stake is in the effect of this exciting force sinks to burying；
Step 4: stake is sunk in soil after designated depth, stops electromagenetic wave radiation, is at this moment radiated modified strip and is become first shape and matter again
The heart is located at rotating shaft center, at this moment radiates modified strip and does not generate exciting force, then gradually decreases the revolving speed of rotary shaft to 0；Or
Under Electromagnetic Field, radiation modified strip is third shape, and the total mass center for radiating modified strip restores to rotating shaft center, at this moment spoke
It penetrates modified strip and does not generate exciting force, then gradually decrease the revolving speed of rotary shaft to 0.
9. according to claim 8 deform the pile sinking process for reducing the vibrohammer that vibration influences, feature based on radiation
It is: when radiating modified strip in step 4 because residual deformation without reverting to first shape and mass center is not at rotation completely
When axis center, or mass center when not being fully returned to rotating shaft center of radiation modified strip, start balance adjustments structure, respectively
Change the centroid position of the first centroid position adjuster and the second centroid position adjuster, is placed in this way by changing in an angle of 90 degrees
The first centroid position adjuster and the second centroid position adjuster synthesis mass center position, thus offset radiation modified strip because
Mass center is not at the centrifugal force generated when rotating shaft center；Vibropile may determine that by the acceleration that acceleration transducer measures
Whether hammer generates exciting force, and when radiation modified strip mass center is not at rotating shaft center, then the acceleration measured is not zero, this
At this moment sample shows by adjusting the position of mass center in balance adjustments structure until the acceleration that acceleration transducer measures is zero
The centrifugal force that mass center generates in balance adjustments structure counteracts radiation modified strip because of generation when mass center is not at rotating shaft center
Centrifugal force.
10. according to claim 8 deform the pile sinking process for reducing the vibrohammer that vibration influences, feature based on radiation
Be: when modified strip be coefficient of thermal expansion it is different two-ply bonding be formed by stacking when, provide Precise control exciting force size and
The method that exciting force is 0 is controlled when passing through hammer-stake-ground resonant frequency are as follows:
Be related to it is some write a Chinese character in simplified form and symbol, the following are notes:
M: the number of nodes of each unit
Ni: interpolating function N is defined on i-th of node of each uniti(1≤i≤m),NiIt is any point coordinate (x, y) in unit
Function
α1: the thermal expansion coefficient of the first laminate
α2: the thermal expansion coefficient of the second laminate
[D1]: the stress and strain relational matrix of the first laminate
[D2]: the stress and strain relational matrix of the second laminate
[B]: the relational matrix for being displaced and straining on each unit
[B]T: the transposed matrix of [B]
Ω: the integral domain region of unit
[Ke]type1: the matrix of each unit of the first laminate,
[Ke]type2: the matrix of each unit of the second laminate,
T: temperature
{fe}type1: the composition force vector on each cell node of the first laminate
{fe}type2: the composition force vector on each cell node of the second laminate
{ue}type1: the motion vector on the first laminate unit node
{ue}type2: the motion vector on the second laminate unit node
ux,uy: the displacement components u of any point (x, y) in unitxAnd uy
Its expression formula is respectivelyWith
ρ: density of material is ρ in unit
ω: rotary shaft angular velocity of rotation is ω,
bx: active force of the gravity to any point in unit in the direction x in rotary course
by: active force of the gravity to any point in unit in the direction y in rotary course
Active force of each unit to rotating shaft center in the direction x
Active force of each unit to rotating shaft center in the direction y
The exciting force that the iterative structure of first laminate and the second laminate generates rotating shaft center in the direction x
The exciting force that the iterative structure of first laminate and the second laminate generates rotating shaft center in the direction y
Fexcite: total exciting force that the iterative structure of the first laminate and the second laminate generates rotating shaft center
Local coordinate system is established by origin of rotating shaft center, if the two-ply of composition modified strip is respectively the first laminate and second
Laminate, respectively to the first laminate and the second laminate grid division, and the grid node of the first laminate and the second laminate is in two-ply
It is overlapped on bonding interface；
After grid division, each grid constitutes a unit and defines interpolation letter on each node if each unit has m node
Number Ni(1≤i≤m),NiIt is the function of any point coordinate (x, y) in unit；
If the thermal expansion coefficient of the first laminate is α1, the relational matrix [D of stress and strain1], if being displaced and straining on each unit
Relational matrix be [B], [B]TFor the transposed matrix of [B], each unit of the first laminate is obtained by integrating in unit area Ω
MatrixIf temperature is T, the composition force vector { f on each cell nodee}type1, ask
{fe}type1Method are as follows:
Based on [Ke]type1By the motion vector { u on cell nodee}type1With force vector { fe}type1It connects, if not considering
Influencing each other between unit, as follows:
[Ke]type1{ue}type1={ fe}type1 (2)
If the thermal expansion coefficient of the second laminate is α2, the relational matrix [D of stress and strain2], if being displaced and straining on each unit
Relational matrix be [B], [B]TFor the transposed matrix of [B], each unit of the second laminate is obtained by integrating in unit area Ω
MatrixIf temperature is T, the power on each cell node forms force vector { fe}type2, ask
{fe}type2Method are as follows:
Based on [Ke]type2By the displacement { u on cell nodee}type2With power { fe}type2It connects, if not considering between unit
Influence each other, it is as follows:
[Ke]type2{ue}type2={ fe}type2 (4)
Consider the interaction force between unit, all units on the first laminate and the second laminate are all listed such as formula (3) and
Equation group shown in formula (4) can because the grid node of the first laminate and the second laminate on bonding interface is to be overlapped
With simultaneous solution, the displacement on each cell node is can be obtained in these equation groups；
If solving the direction x and y displacement on obtained each cell node is respectively uix,uiy(1≤i≤m), if any one in unit
Point coordinate is (x, y), and the displacement components u of any point (x, y) in unit can be obtained in this wayxAnd uy, expression formula is respectivelyWithIf density of material is ρ in unit, rotary shaft angular velocity of rotation is ω, in rotary course
Active force of the gravity to any point in unit in the direction x is bx, the direction y active force be by, then can calculate each unit
Active force to rotating shaft center in the direction x and y is respectivelyWith
Active force of the unit in the direction x:
Active force of the unit in the direction y:
By the active force of all unitsWithIt is superimposed respectively in the direction x and the direction y, obtains the first laminate and the second layer
The exciting force that rotating shaft center is generated under the iterative structure same temperature warpage of plateWith
Then available exciting forceWith different temperatures value under specified angular velocity of rotation
Calculate exciting force FexciteSize, draw temperature value and exciting force FexciteRelation curve；When needing specified pile sinking in step 3
When exciting force size, can be quickly according to temperature value and exciting force FexciteRelation curve temperature value, thus heating the
One laminate and the second laminate are to assigned temperature, to apply specified exciting force；When needed in step 2 and step 4 to stake apply
Exciting force be 0, temperature value and exciting force F can be passed throughexciteRelation curve determine apply temperature value, to make to rotate
Exciting force F when the speed of axis passes through hammer-stake-ground resonant frequencyexciteIt is 0.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113846633A (en) * | 2021-10-09 | 2021-12-28 | 福建省大地管桩有限公司 | Combined concrete pipe pile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419018A (en) * | 2002-12-26 | 2003-05-21 | 夏斌 | Eccentric device for vibration piling hammer |
| CN107580474A (en) * | 2015-05-11 | 2018-01-12 | 皇家飞利浦有限公司 | Deformable supersonic array and system |
| CN109137913A (en) * | 2018-09-29 | 2019-01-04 | 浙江科技学院 | The vibrohammer and pile sinking process for exempting from resonant interaction are played based on stiffness tuning |
| CN109137911A (en) * | 2018-09-29 | 2019-01-04 | 浙江科技学院 | The vibrohammer and pile sinking process of mangneto driving |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419018A (en) * | 2002-12-26 | 2003-05-21 | 夏斌 | Eccentric device for vibration piling hammer |
| CN107580474A (en) * | 2015-05-11 | 2018-01-12 | 皇家飞利浦有限公司 | Deformable supersonic array and system |
| CN109137913A (en) * | 2018-09-29 | 2019-01-04 | 浙江科技学院 | The vibrohammer and pile sinking process for exempting from resonant interaction are played based on stiffness tuning |
| CN109137911A (en) * | 2018-09-29 | 2019-01-04 | 浙江科技学院 | The vibrohammer and pile sinking process of mangneto driving |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846633A (en) * | 2021-10-09 | 2021-12-28 | 福建省大地管桩有限公司 | Combined concrete pipe pile |
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