CN208149556U - A kind of novel light power installation anchor - Google Patents
A kind of novel light power installation anchor Download PDFInfo
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- CN208149556U CN208149556U CN201820726265.3U CN201820726265U CN208149556U CN 208149556 U CN208149556 U CN 208149556U CN 201820726265 U CN201820726265 U CN 201820726265U CN 208149556 U CN208149556 U CN 208149556U
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Abstract
The utility model belongs to field of ocean engineering, is related to a kind of novel light power installation anchor.Mainly it is made of wing plate, anchor shank and connecting rod；Wing plate is symmetrically spliced by two pieces of triangle flat plates to be formed, and connecting rod is mounted on the tail portion of wing plate；The inverted V type structure that anchor shank is made of two pieces of trapezoidal plates, is symmetrically fixed on wing plate.Propeller can be fixed on the tail portion of novel light dynamic anchor by shear pin, and novel light power installation anchor, propeller and shear pin combination are mounted for combination anchor；Combination anchor is discharged into seawater, installation anchor chain is unclamped, makes to combine in anchor injection soil；Tensioning installation anchor chain, shear pin are cut, and propeller is pulled out, and novel light power installation anchor stays in soil；It is tensioned work anchor chain, to adjust the angle of novel light power installation anchor；Propeller installs the installation of anchor for next novel light power after taking out.The utility model has the advantages that light-weight, load-carrying efficiency is high, improves heavy in soil of anchor and passes through depth, reduces cost.
Description
Technical field
The utility model belongs to field of ocean engineering, is related to a kind of novel light power installation anchor.
Background technique
With the high speed development of social economy and the gradually exhaustion of land shallow sea petroleum resources, people are gradually by petroleum resources
Exploitation turns to deep-sea.In the deep-marine-environment that the depth of water is more than 300-500m, oil-gas exploration, acquisition and storage facilities mainly pass through anchor
Catenary system is connected with the anchor foundation for acting on sea bed surface or being embedded in sea bed.Therefore, anchor foundation is anchoring type system
Root, be superstructure safe operation premise guarantee.Anchor foundation suitable for the deepwater mooring system formula system mainly includes suction
Formula caisson, towing anchor, suction type mounting plate anchor and power install anchor.Suction caisson is needed during installation from the valve at the top of caisson
Door makes to form negative pressure inside caisson to extracardiac pumping, so that caisson is pressed into required depth in sea bed.Towing anchor needs during installation
By towboat, anchor is dragged to certain depth in sea bed from sea bed surface.It needs when suction type mounting plate anchor is installed by suction type
Caisson extracts caisson after installation, then is tensioned the angle that anchor chain makes anchor go to working condition needs.Power installation anchor is being pacified
It is not needed when dress by external force, by a depthkeeping in the anchor kinetic energy that free-falling obtains in water and self gravity potential energy injection soil
Degree, and anti-pulling capacity is provided by the anchor force of surrounding soil.Therefore, first three anchor foundation is compared, power installs anchorage
Have the advantages that the set-up time is short, mounting cost is low, therefore development prospect is wide in ocean engineering.
Application dynamic anchor in practical projects is mainly torpedo anchor (United States Patent (USP), the patent No. 6106199) and more at present
To load-bearing anchor (United States Patent (USP), the patent No. 7059263, B1).Torpedo anchor is semielliptical shape or the cylinder of taper by a front end
Axis and several empennage compositions, axis are used to provide the weight of anchor, enable anchor without the help of external force in injection soil,
Empennage is used to improve directional stability when anchor falls in water.However, since anchor eye position is located at the top of anchor axis, when
By anchor when uplift load anti-pulling capacity mainly by anchor-soil contact face frictional force provide, therefore the load-carrying efficiency of anchor compared with
It is low.The plate that multinomial load-bearing anchor is mutually 120 ° by three pieces forms, and the surface area of anchor is larger, increases contact of the anchor with surrounding soil
Area, and its anchor eye is located proximate to the front end of anchor, so anchor can rotate when by uplift load, to increase anchor vertical
In the projected area in uplift load direction to increase anti-pulling capacity.However, multinomial load-bearing anchor is light-weight, surface area is big, leads
Heavy in soil of anchor is caused to pass through depth limited.Sea bed soft clay is generally normally consolidated soil or slight overconsolidated soil, and native intensity is with depth
Spend linearly increasing, so the fitting depth of anchor is smaller, corresponding anti-pulling capacity is smaller.
The utility model absorbs the advantages of dynamic anchor, proposes a kind of novel light power installation anchor (light-
weight deep penetrating plate anchor,L-DPPA).Anchor is mainly made of wing plate, anchor shank and anchor eye.Wing plate
It is made of two pieces of triangle flat plates, anchor-soil contact face product is increased, to improve bearing capacity.In order to increase anchor in sea bed
Heavy to pass through depth, anchor is needed during installation by means of propeller.Propeller is mainly made of cylindrical axis, empennage and anchor eye, can
The tail portion for being connected to anchor, which is used to improve the penetrating speed of anchor and sinks, passes through depth, can recycle propeller after installation under being used for
The installation of one anchor.By adjusting the size of anchor and the weight of propeller, anchor can be made to be suitable for various intensity and various soil properties
In the sea bed of (including clay and sand).
Utility model content
To solve the above problems, the utility model proposes a kind of novel light power to install anchor, including a kind of novel light
Power is installed anchor (L-DPPA) and is carried out the power installation method of the installation of anchor by means of propeller.
The technical solution of the utility model：
A kind of novel light power installation anchor, is mainly made of wing plate 11, anchor shank 12 and connecting rod 14；The wing plate 11
Symmetrically spliced by two pieces of triangle flat plates and formed, angle between the two is adjusted according to engine request；Two pieces of wing plate 11
Multiple aperture a15 are symmetrically arranged on triangle flat plate；The connecting rod 14 is mounted on the tail portion of wing plate 11, sets in connecting rod 14
There is aperture b17, is fixedly connected with connecting rod 14 with propeller 2 by shear pin 3；The anchor shank 12 is by two pieces of trapezoidal plates
The inverted V type structure of composition, 12 bottom of anchor shank cooperate equipped with multiple aperture c18, aperture c18 and aperture a15, pass through bolt 16
Anchor shank 12 is symmetrically fixed on two pieces of triangle flat plates of wing plate 11；The top of anchor shank 12 is equipped with anchor eye 13, for connecting work
Make anchor chain 5 to provide anti-pulling capacity；By adjusting the fixation position of anchor shank 12, on axis direction of the anchor shank 12 along wing plate 11
Lower movement, to change 13 offset of anchor eye, i.e., the distance at the resistance of soil center of anchor eye 13 to wing plate 11 is in 11 axis of wing plate
The projection in direction makes novel light power installation anchor when by uplift load with the performance of dive, the installation of novel light power
To obtain bearing capacity in anchor insertion soil layer.
A kind of installation method of novel light power installation anchor, installation anchor chain 4 is connected on propeller anchor eye 23；Pass through
Connecting rod 14 is fixed in propeller axis front end fluting 25 by shear pin 3, and novel light power is made to install anchor 1,2 and of propeller
The combination of shear pin 3 is mounted for combination anchor；Work anchor chain 5 is connected on anchor eye 13；
Specific step is as follows：
Combination anchor is discharged into seawater first, combination anchor is made to be located at sea bed surface or more, then unclamps installation anchor chain 4,
Make to combine anchor free-falling in water, and the gravitional force injection soil of the kinetic energy and combination anchor itself obtained by free-falling
In, complete installation；After installation, it is tensioned the installation anchor chain 4 of 2 tail portion of propeller, when the shearing that shear pin 3 is subject to is greater than itself
When allowing shearing, shear pin 3 is cut, so that propeller 2 is pulled out, and novel light power installation anchor 1 stays in soil；?
Tight work anchor chain 5, when the initial resistance to plucking that the power that work anchor chain 5 is transmitted on anchor eye 13 is more than novel light power installation anchor 1 is held
When carrying power, novel light power is installed anchor 1 and is started in move in earth, to adjust the angle of novel light power installation anchor 1；It promotes
Device 2 installs the installation of anchor for next novel light power after taking out.
The shearing of allowing of the shear pin 3 is 1.5-2.0 times that novel light power installs 1 weight of anchor.
The weight of the propeller 2 is adjusted according to actual requirement of engineering, thus enable anchor injection varying strength and
In the sea bed of soil property.
The propeller 2 is using application No. is the propellers in 201610648708.7 patents, mainly by propeller
Axis 21, propeller empennage 22 and propeller anchor eye 23 form；The front end of the propeller axis 21 is equipped with lateral propeller
Axis front end aperture 24 and longitudinal propeller axis front end fluting 25, propeller axis front end aperture 24 is for placing shear pin
3, propeller axis front end fluting 25 is for connecting the connecting rod 14 of novel light power installation anchor 1；The propeller axis
Front end aperture 24 and the aperture b17 in connecting rod 14 are coaxial, cooperate；
The propeller empennage 22 is mounted on the tail portion of propeller axis 21, and propeller axis is equipped at 21 tail portion center
Propeller anchor eye 23, for connecting installation anchor chain 4；The width and number of propeller empennage 22 are increased and decreased according to actual needs,
Guarantee directional stability when whole whereabouts in water.
The propeller axis 21 is hollow cylinder, and tail portion is the rotary table gradually tapered up, front end be semielliptical shape or
Hemispherical；The material of the inside filling of hollow cylinder is mercury, lead or concrete.
The material of the propeller empennage 22 is alloy material, composite material or plastics, by reducing propeller empennage
22 density is come the position that lowers the center of gravity.
The utility model beneficial effect：Itd is proposed in the utility model novel light power installation anchor have it is light-weight, hold
Carry high-efficient, under suitable condition can be with dive the advantages of.In addition, what is proposed in the utility model carries out anchor by propeller
The power installation method of installation can significantly improve heavy in soil of anchor and pass through depth, to adapt to different soil property and native intensity.Though
So installation cost, but the load-carrying efficiency of single anchor are increased to a certain extent by means of the anchor that propeller installs the utility model
It is significantly improved.The installation of all anchors is completed using a propeller, to save production cost.Therefore it can reduce
The anchor number that entire anchoring system needs reduces production, transport, mounting cost, to reduce project total cost.The utility model
In anchor and installation method do not influenced by the depth of water, applicability is extensive, can be used for the anchoring of marine floating type platform, floating blower etc.
Basis.The utility model helps to promote development process of the China in terms of the deepwater mooring system formula systematic anchorage basis.
Detailed description of the invention
Fig. 1 is the schematic three dimensional views of the novel light power installation anchor in the utility model.
Fig. 2 is the main view of the novel light power installation anchor in the utility model.
Fig. 3 is the side view of the novel light power installation anchor in the utility model.
Fig. 4 is the top view of the novel light power installation anchor in the utility model.
Fig. 5 is the schematic three dimensional views of propeller in the utility model.
Fig. 6 is the main view of propeller in the utility model.
Fig. 7 is the side view of propeller in the utility model.
Fig. 8 is the top view of propeller in the utility model.
Fig. 9 is the schematic diagram that novel light power installation anchor is connected with propeller.
Figure 10 is the installation procedure figure that novel light power installation anchor is installed by propeller.
Figure 11 (a) is the dynamic driving course prediction result of novel light power installation anchor and combination anchor in soil.
Figure 11 (b) combines the speed of anchor with the change curve schematic diagram of depth when being different penetrating speed.
In figure：1 novel light power installs anchor；2 propellers；3 shear pins；4 installation anchor chains；5 work anchor chains；11 wing plates；
12 anchor shanks；13 anchor eyes；14 connecting rods；15 aperture a；16 bolts；17 aperture b；18 aperture c；2 propellers；21 propeller axis；22
Propeller empennage；23 propeller anchor eyes；24 propeller axis front end apertures；25 propeller axis front ends fluting.
Specific embodiment
Below in conjunction with attached drawing and technical solution, specific embodiment of the present utility model is further illustrated.
1, novel light power installs anchor
Fig. 1-4 is the schematic diagram that novel light power installs anchor 1, and novel light power installs anchor 1 mainly by wing plate 11, anchor
Handle 12 and 14 three parts of connecting rod composition.Wing plate 11 is symmetrically spliced by two pieces of triangle flat plates to be formed, and two of triangle flat plate
Right-angle side size can be adjusted according to the actual situation, to adapt to different native intensity and soil property.Two pieces of triangle flat plates can
To be attached by the processing technologys such as welding, riveting, hinged, wing plate 11 is formed.Angle between two triangle flat plates is big
In 180 °, this is bias caused by order to balance anchor shank 12.Angle between two triangle flat plates will be according to wing plate 11 and anchor
Depending on 12 size of handle, fall in the position of centre of gravity of anchor on the axis X-X of anchor, as shown in Figure 1.The front end of wing plate 11 forms one
Point, suffered soil body resistance when reducing anchor in initial injection soil, helps that anchor is made to obtain deeper sinking passing through depth.In addition,
Needs are needed or transported according to processing, three vertex of wing plate 11 can be processed into the shape with certain radian, reduce anchor
The problems such as abrasion during transportation, buckling failure.
Anchor shank 12 is mainly made of two pieces of trapezoidal plates, the top aperture of anchor shank 12, forms anchor eye 13.Anchor chain 5 work certainly
It is drawn in anchor eye 13, upper load acts on novel light power by work anchor chain 5 and installs on anchor 1.When novel light power
When installing the completion installation of anchor 1, the initial axis direction that novel light power installs anchor 1 is vertical direction.Then tensioning work anchor
Chain 5, when the anchor chain 5 that works is transmitted to initial anti-pulling capacity of the power on anchor eye 13 more than novel light power installation anchor 1, newly
Type lightweight power is installed anchor 1 and is started in move in earth.Due to the position of uplift load be located at anchor eye 13 rather than wing plate 11
Tail portion, so uplift load can be centrally formed a torque to the resistance of soil of wing plate 11.What the rersistant center point of the soil body referred to
It is when anchor tangential motion (along the movement of X-X axis direction) or normal direction movement (form flat perpendicular to 11 3 vertex of wing plate
Face direction) when, soil body resistance is zero to the moment values of the point.The distance of anchor eye 13 to 11 axis of wing plate can be according to Practical Project
It needs to adjust, which is also referred to as anchor eye eccentricity.Under the moment loading that uplift load is centrally formed with respect to resistance of soil, anchor
It can be rotated in soil.Anchor point position can be rotated towards anchor eye initial position direction, and anchor tail can be to away from anchor eye initial position side
To rotation.With the rotation of anchor, wing plate 11 is held in the projected area increase perpendicular to uplift load direction to increase normal direction
Carry power.So the novel light power installation anchor 1 of the utility model is in soil mainly by the method for the soil body compared to for torpedo anchor
To power rather than tangential force, therefore load-carrying efficiency with higher, the i.e. anti-pulling capacity of anchor and the ratio of anchor weight are higher.Anchor
Eye eccentricity is bigger, and the buried depth loss generated in anchor slab rotary course is smaller.
The bottom of anchor shank 12 is connected by bolt 16 with wing plate 11.The bottom of anchor shank 12 is equipped with aperture c18, while wing plate 11
On also be provided with the aperture a15 to match, wing plate 11 and anchor shank 12 are connected by bolt 16, as shown in Figure 1.In addition, it is also possible to its
His method, such as anchored with rivet, carry out the fixation of wing plate 11 and anchor shank 12.12 position of anchor shank can be along in the utility model
X-X axis direction is adjusted, to change position of the anchor eye 13 relative to resistance of soil center.Anchor eye 13 is into resistance of soil
The distance of the heart is known as anchor eye offset in the projection of X-X axis direction.Anchor eye offset is to determine anchor when by uplift load
Whether there is the key factor of dive property.In appropriate circumstances, anchor understands dive to deeper soil layer when by uplift load
In, to obtain higher anti-pulling capacity.So anchor can be determined according to actual requirement of engineering and live soil property and soil strength
The position on wing plate 11 of handle 12.
The tail portion of wing plate 11 is equipped with a connecting rod 14, has an aperture b17 in connecting rod, as shown in Figure 2.Connecting rod 14
It is specifically introduced with the propeller part that acts on of aperture b17.
2, propeller
Fig. 5-8 is the schematic diagram of propeller 2.Propeller 2 is mainly by propeller axis 21, propeller empennage 22 and propeller
Anchor eye 23 forms.Propeller axis 21 is cylindrical structure, Front-end Design at semielliptical shape or hemispherical, can make water flow around
The front end even transition of propeller axis, to reduce the towrope resistance being subject to when propeller falls in water, to improve injection
Speed；The tail portion of propeller axis 21 is designed to the truncated cone-shaped gradually tapered up, and water flow can be made gently to flow in the tail portion of propeller
It crosses, reduces vortex region, to improve penetrating speed.The shape of propeller axis 21 is similar to streamlined, this is to reduce and push away
The towrope resistance being subject in water into device 2, so that novel light power installation anchor 1 be helped to obtain higher penetrating speed and deeper
Heavy pass through depth.The diameter and length of propeller axis 21 can be adjusted according to live soil property and native intensity.When native intensity compared with
Gao Shi, it is proposed that lengthen the length of propeller or the diameter of augmented thruster to improve the weight of propeller, anchor is helped to reach design
Required depth.In addition, propeller axis 21 can be made into hollow, the bigger material of central filler lead, mercury isodensity, to increase
The density and quality of propeller improve heavy in soil of anchor and pass through depth.
Propeller empennage 22 is used to improve directional stability when combination anchor falls in water.Empennage 22 shown in fig. 5 has
Three pieces are mutually 120 °.According to actual needs, the number, shape and size of adjustable empennage, to meet the need of different engineerings
It wants.When anchor falls in water, center of gravity is lower, i.e., position of centre of gravity is closer apart from anchor point, and the directional stability of anchor in water is better.
When the anchor that the directional stability of anchor refers to well falls in water, the axis direction of anchor does not deviate by vertical direction, even if deviateing vertically
Direction, anchor also can gradually rotate adjustment in dropping process, rotate the axis of anchor again to vertical direction.So in addition to upper
It states through the bigger material of the packed density in propeller axis 21 outside lowering the center of gravity, can also pass through and reduce the close of empennage 22
Degree is come the position that lowers the center of gravity.Empennage 22 can select lighter material, such as high strength alloy material, composite material, high-strength
Plastics etc..
The front end of the propeller axis 21 is equipped with longitudinal propeller axis front end fluting 25, as shown in Figure 7.It promotes
Device axis front end fluting 25 and connecting rod 14 match, it is ensured that connecting rod 14 is inserted into propeller axis front end fluting 25 just
In.At this point, the aperture b17 and the front end aperture 24 of propeller axis in the connecting rod 14 of novel light power installation anchor 1 are coaxial.With
Shear pin 3 passes through aperture b17 and propeller axis front end aperture 24, thus novel light power installation anchor 1 and propeller 2, such as
Shown in Fig. 9.The shearing of allowing of shear pin 3 should be about 1.5-2.0 times of 1 weight of anchor, both can guarantee that combination anchor is released in water in this way
When putting novel light power install anchor 1 without departing from propeller 2, and can guarantee installation after extract propeller 2 when shear pin 3
It can be cut in time without stirring novel light power installation anchor 1.
Propeller anchor eye 23 is for being installation anchor chain 4.Installation anchor chain 4 is also used for recycling propeller after installation.Work as group
After conjunction anchor is installed, propeller 2 can be extracted from soil, only stay anchor in soil by tensioning installation anchor chain 4.
3, installation method
Figure 10, which is shown, carries out the power installation process that anchor 1 is installed using propeller 2.It is connected first with shear pin 3 novel
Lightweight power installs anchor 1 and propeller 2, forms combination anchor.Then combination anchor is discharged from installation ship to apart from sea bed surface
At certain altitude, wait to be installed.Switch on triggering installation anchor chain 4 makes combination anchor fall in water and obtains kinetic energy, and relies on group
It closes anchor to move in water in the kinetic energy and self gravity potential energy injection soil of acquisition, completes installation.After installation, tensioning installation anchor
Propeller 2 is extracted sea bed after shear pin 3 is cut by chain 4, only stays novel light power installation anchor 1 in sea bed.Then use
Towboat makes novel light power install anchor 1 from vertical side to pull out the work anchor chain 5 that angle tensioning is connected at anchor eye 13 on certain
To rotation to certain angle, to provide anti-pulling capacity.Propeller 2 can be used for the installation of next anchor.
4, utility model design verification
In order to verify the utility model proposes new type power anchor and by propeller carry out anchor installation power installation
The practicability of method, fall in water from anchor individually below and in soil the working performance of two stages research anchors of dynamic driving and
Working efficiency.
A. hydrodynamics characteristic
When combining anchor free-falling in water, the towrope resistance of water will receive.Water can use formula (1) to the towrope resistance of anchor
It indicates.
In formula, FD,wIt is water to the towrope resistance of anchor, CD,wFor towrope resistance coefficient, ρwFor the density of water, AFIt is anchor vertical
In the projected area of axis direction.From formula (1) as can be seen that towrope resistance and speed it is square directly proportional.With terminal-velocity under anchor
The increase of degree, towrope resistance increase sharply, and when towrope resistance is equal with the effective weight of anchor in water, the acceleration of anchor is kept to
Zero.Corresponding speed is known as the limit velocity of anchor, v at this timeT.Shown in the expression formula of the limit velocity of anchor such as formula (2).
In formula, WA' it is the effective weight of anchor in water.
The major parameter of table 1 anchor and propeller
Hydrodynamics characteristic of the anchor in water in dropping process includes that the towrope resistance coefficient of anchor, limit velocity, orientation are steady
It is qualitative etc..Utility model people has studied the hydrodynamics spy of combination anchor in water based on fluid dynamics software FLUENT 17.0
Property.The relative dimensions of anchor and propeller are as shown in table 1.Numerical result shows that the directionality for combining anchor is fine, once anchor
Axis direction deviates from vertical direction, and anchor can be adjusted gradually, and axis direction is made to come back to vertical direction.In addition, numerical value calculates
The result shows that combination anchor in water free-falling when corresponding towrope resistance coefficient be 0.71, limit velocity 33.5m/s.
B. heavy in soil of anchor passes through depth
The following are pass through depth using heavy in soil of theoretical analysis method prediction new type power installation anchor.Anchor and propeller
Key dimension is as shown in table 1.The speed that anchor reaches native surface is known as penetrating speed, v0.Anchor acts on when dynamic driving in soil
Power on anchor includes the effective weight W ' of anchor in water, the cladding earth pressure F that anchor is subject tob, resistance F is held at endbear, frictional resistance
Ffrict, and soil is to the towrope resistance F of anchorD,s.Stress of the anchor in soil can be indicated by formula (3).
In formula, z is the depth in anchor point injection soil, and t is the time.Anchor, m=m are installed for new type powerA, W '=WA', it is right
Anchor m=m should be combinedA+mB, W '=WA′+WB', WB' it is the effective weight of propeller in water.Every stress is introduced separately below
Value.
(1) resistance F is held at endbearFor the soil resistance that anchor is subject on perpendicular to axis X -X direction, as shown in formula (4).
Fbear=NcsuAt (4)
In formula, NcFor coefficient of bearing caoacity, change, N with the variation of buried depthcCalculation formula such as formula (5a-5c) institute
Show, suFor the undrained shear strength of the soil body, AtIt is anchor in the contact area perpendicular to axis X -X direction and soil.
In formula, c1、c2For parameter relevant to base shape, B is basic width, and L is basic length, and z is anchor slab buried depth.
For the novel anchor of the utility model, B is the thickness t of triangle wing plateA, L is the width w of triangle wing plateF.For propeller
For, B and L are taken as the diameter D of propeller axisB。
(2) frictional resistance FfrictFor the soil resistance that the side of anchor is subject to, as shown in formula (6).In formula, α is anchor-Soil Interface
Between coefficient of friction, AsThe area contacted for anchor side with soil.
Ffrict=α suAs (6)
(3) cladding earth pressure FbThe effective weight of soil is arranged for anchor.
(4) towrope resistance F of the soil body to anchorD,sIt can be calculated by formula (7).
In formula, CD,sIt is soil to the towrope resistance coefficient of anchor, ρsFor the saturated density of soil, v is the speed of anchor at any one time
Degree.
In addition, high shear strain rate occurs for the soil body around anchor when anchor high speed injection sea bed.Soil meeting in high shear strain rate
Performance rate effect, i.e., native intensity increase with the raising of shear strain rate.It is contemplated that soil body rate effect not drain shearing resistance strong
Degree is represented by formula (8).
In formula, RfFor rate effect coefficient, su,refFor referring shearing strain rateUnder obtained soil body undrained shear strength,
Referred to as with reference to native intensity, λ is rate effect parameter,For shear strain rate, can be indicated with formula (9).
In formula, d is reference length.At the scene in test, mainly with taper (Cone), T shape (T-bar) and spherical penetrometer
The undrained shear strength of (Ball penetrometer) measurement soil body, it is believed that this intensity is with reference to native intensity.It refers at this time
Shear strain rate is taken as the ratio of penetrating speed Yu penetrometer diameter.For anchor, d is taken as the thickness of wing plate；For propeller
For axis, d is taken as the diameter of propeller axis.
Assuming that anchor Soil Interface coefficient of friction α=0.33, rate effect parameter lambda=0.14, with reference to native intensity su,ref=2.4+3z
The parameter of kPa, anchor and propeller is as shown in table 1, is assured that anchor or combination anchor in soil when dynamic driving according to formula (3)
Speed with depth variation relation.Anchor can be calculated according to formula (2) and combine the limit velocity of anchor, respectively 18.3 and 33.5m/
s.So taking two different penetrating speed, respectively 17 and 18m/s for anchor.For combination anchor for, take five not
Same speed, respectively 17,18,20,25 and 30m/s.Anchor and the speed for combining anchor are as shown in figure 11 with the variation relation of depth.
From Figure 11 (a) as can be seen that when penetrating speed is 17m/s, the depth of penetration of anchor is 7.56m；Increase and promotes
After device, the depth of penetration of anchor is 18.56m.The speed of combination anchor is bent with the variation of depth when Figure 11 (b) is different penetrating speed
Line.As previously mentioned, the penetrating speed of anchor in water also increases by means of propeller.When penetrating speed is 30m/s, group
The final heavy depth of passing through for closing anchor is 24.88m.This shows that propeller can improve the depth of penetration of anchor in terms of two：First is that increasing
Whole weight is added, to improve whole gravitional force to increase the heavy depth of passing through of anchor and increase；Second is that increasing entirety
Penetrating speed in water, to improve whole kinetic energy, this can also increase heavy in soil of anchor and pass through depth.The depth of anchor
Bigger, corresponding load-carrying efficiency is higher.So although installing the anchor of the utility model to a certain extent with by means of propeller
Installation cost is increased, but the load-carrying efficiency of single anchor is significantly improved.Therefore entire anchoring system needs can be reduced
Anchor number, reduce production, transport, mounting cost, to reduce project total cost.
Claims (1)
1. a kind of novel light power installs anchor, which is characterized in that the novel light power installs anchor mainly by wing plate (11), anchor
Handle (12) and connecting rod (14) composition；The wing plate (11) is symmetrically spliced by two pieces of triangle flat plates to be formed, between the two
Angle is adjusted according to engine request；Multiple aperture a (15) are symmetrically arranged on two pieces of triangle flat plates of wing plate (11)；It is described
Connecting rod (14) be mounted on the tail portions of wing plate (11), connecting rod (14) is equipped with aperture b (17), makes to connect by shear pin (3)
Extension bar (14) is fixedly connected with propeller (2)；The inverted V type structure that the anchor shank (12) is made of two pieces of trapezoidal plates, anchor
Handle (12) bottom is equipped with multiple aperture c (18), and aperture c (18) and aperture a (15) cooperate, by bolt (16) by anchor shank
(12) it is symmetrically fixed on two pieces of triangle flat plates of wing plate (11)；The top of anchor shank (12) is equipped with anchor eye (13), for connecting
Anchor chain (5) are worked to provide anti-pulling capacity；By adjusting the fixation position of anchor shank (12), anchor shank (12) is along wing plate (11)
Axis direction moves up and down, to change anchor eye (13) offset, i.e., anchor eye (13) arrives the resistance of soil center of wing plate (11)
Distance makes property of novel light power installation anchor when by uplift load with dive in the projection of wing plate (11) axis direction
Can, to obtain bearing capacity in novel light power installation anchor insertion soil layer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423125A (en) * | 2018-05-14 | 2018-08-21 | 大连理工大学 | A kind of novel light power installation anchor and installation method |
| WO2019218115A1 (en) * | 2018-05-14 | 2019-11-21 | 大连理工大学 | New lightweight dynamic mounting anchor and mounting method |
| CN111301610A (en) * | 2020-02-17 | 2020-06-19 | 大连理工大学 | Combined power anchor of folding anchor shank and verticality control method thereof during underwater falling |
| CN112078728A (en) * | 2020-09-14 | 2020-12-15 | 大连理工大学 | Novel torpedo anchor based on bionics and construction method thereof |
| WO2021163842A1 (en) * | 2020-02-17 | 2021-08-26 | 大连理工大学 | Combined power anchor having folding anchor shank and method for controlling perpendicularity of the combined power anchor having folding anchor shank during dropping in water |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108423125A (en) * | 2018-05-14 | 2018-08-21 | 大连理工大学 | A kind of novel light power installation anchor and installation method |
| WO2019218115A1 (en) * | 2018-05-14 | 2019-11-21 | 大连理工大学 | New lightweight dynamic mounting anchor and mounting method |
| CN108423125B (en) * | 2018-05-14 | 2023-11-24 | 大连理工大学 | Novel light power installation anchor and installation method |
| CN111301610A (en) * | 2020-02-17 | 2020-06-19 | 大连理工大学 | Combined power anchor of folding anchor shank and verticality control method thereof during underwater falling |
| WO2021163842A1 (en) * | 2020-02-17 | 2021-08-26 | 大连理工大学 | Combined power anchor having folding anchor shank and method for controlling perpendicularity of the combined power anchor having folding anchor shank during dropping in water |
| AU2020323950B2 (en) * | 2020-02-17 | 2022-01-06 | Dalian University Of Technology | Hybrid dynamically installed anchor with a folding shank and control method for keep anchor verticality during free fall in water |
| US11827314B2 (en) | 2020-02-17 | 2023-11-28 | Dalian University Of Technology | Hybrid dynamically installed anchor with a folding shank and control method for keep anchor verticality during free fall in water |
| CN112078728A (en) * | 2020-09-14 | 2020-12-15 | 大连理工大学 | Novel torpedo anchor based on bionics and construction method thereof |
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