CN109098217A - A kind of plug stake of offshore self-elevating drilling platform influences development test device and method to neighbouring shoe - Google Patents
A kind of plug stake of offshore self-elevating drilling platform influences development test device and method to neighbouring shoe Download PDFInfo
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- CN109098217A CN109098217A CN201810991917.0A CN201810991917A CN109098217A CN 109098217 A CN109098217 A CN 109098217A CN 201810991917 A CN201810991917 A CN 201810991917A CN 109098217 A CN109098217 A CN 109098217A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The invention discloses a kind of plug stakes of offshore self-elevating drilling platform to influence development test device to neighbouring shoe, the present apparatus includes soil bin, movable pedestal, longitudinal girder steel, main lateral girder steel, secondary lateral girder steel, plug shoe loading device and impacted shoe loading device, this method influences testing equipment of the mini Mod than ruler of research for jack-up unit plug shoe to neighbouring shoe, influence of the jack-up unit plug shoe to different spacing adjacent to shoe can be effectively simulated, and resistance of soil and the accurate measurement of deformation during loading.Have great importance to jack-up unit stability of foundation and security evaluation.
Description
Technical field
The invention belongs to field of ocean engineering, and in particular to a kind of plug stake of offshore self-elevating drilling platform is to neighbouring
Shoe influences development test device and method.
Background technique
Recently as China's offshore and gas development, at present offshore self-elevating drilling platform mobility it is strong, can be effective
The advantages that reducing the cost and good operation stability of offshore and gas development, is widely used, primary structure includes top
Structure, spud leg and shoe.The general independent spud-can for using three spud leg forms can play upper brace in seabed soil
To support and antidumping.Its driving depth compared with conventional piles basic platform is smaller, and can under identical driving depth
To obtain bigger bearing capacity and better stability.
It is flat usually nearby to have existing or well head when executing drilling well or maintenance activity for self-elevating drilling platform (ship)
Platform.Since the diameter range of current platform shoe is generally 6 between 20m, belonging to super-large diameter structure.Therefore shoe penetration process
Biggish extruding and removing soil effect can be generated with peripheral direction downwards, and there are secondary soil compactions and casting mechanism for withdrawal process.
Therefore offshore self-elevating drilling platform plug stake process inevitably has an adverse effect to the basis of circumferential mesas, when serious
It may result in circumferential mesas run-off the straight or even topple, cause serious engineering accident.
Therefore the influence that the plug of simulation ocean self-elevating drilling platform generates neighbouring shoe is analyzed and evaluated, for neighbour
The safety evaluatio of nearly platform and drilling platforms itself suffers from significance.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of plug stake of offshore self-elevating drilling platform is right
Neighbouring shoe influences development test device.
The present invention is achieved by the following technical solutions:
A kind of plug stake of offshore self-elevating drilling platform influences development test device to neighbouring shoe, including soil bin,
Movable pedestal, longitudinal girder steel, main lateral girder steel, secondary lateral girder steel, plug shoe loading device and impacted shoe load dress
It sets, soil bin two sides is provided with movable pedestal, longitudinal girder steel are provided on movable pedestal, between longitudinal girder steel
It is across and is provided with main lateral girder steel and secondary lateral girder steel perpendicular with longitudinal girder steel and can be moved along it on soil bin,
It is provided with the plug shoe loading device that can be moved along it on main lateral girder steel, being provided on secondary lateral girder steel can be along its shifting
Dynamic impacted shoe loading device.
In the above-mentioned technical solutions, the load-carrying castor reality that the movable pedestal is arranged by bottom is mobile.
In the above-mentioned technical solutions, the movable pedestal bottom is provided with leveling footing for fixing position.
In the above-mentioned technical solutions, the movable pedestal is by pedestal steelframe and embeddable in the counterweight steel in pedestal steelframe
Case is constituted, and the stabilization of main lateral girder steel, secondary lateral girder steel is realized by counterweight steel case.
In the above-mentioned technical solutions, the quantity of the secondary lateral girder steel is 2, and every secondary lateral girder steel is provided with 2 groups
Impacted shoe loads shoe, and described 2 secondary lateral girder steels are located at the two sides of main lateral girder steel.
In the above-mentioned technical solutions, described 2 secondary lateral girder steels are located at the side of main lateral girder steel.
In the above-mentioned technical solutions, the plug shoe loading device is realized by being set to the longitudinal rail sliding block of bottom
Movement on main lateral girder steel, impacted shoe loading device are realized by being set to the cross slide way slide block of bottom secondary horizontal
Movement on girder steel.
In the above-mentioned technical solutions, the plug shoe loading device includes integrated type electric cylinder, electric pushrod, guiding
Electric pushrod is arranged in bar, electric cylinder movable plate and tilt prop, the bottom of integrated type electric cylinder, and the bottom of electric pushrod connects electric cylinder
Movable plate, the two sides of electric pushrod are provided with the guide rod for limit, in the tilt prop that integrated type electric cylinder is arranged by two sides
It is connect with cross slide way slide block.
In the above-mentioned technical solutions, the impacted shoe load shoe include stepper motor, lead screw, motor mounting plate,
Lower bolster, backing plate support column, guide rod sliding pair, horizontal upper moving plate, upper moving plate lead screw are paid, are dynamic under vertical power transmission guide rod, level
Plate, ring flange, shoe load bar；It is connected between motor mounting plate, lower bolster by backing plate support column, stepper motor is set to electricity
The lower section of machine mounting plate, stepper motor upper end are provided with lead screw, and lead screw passes through motor mounting plate and pays water by upper moving plate lead screw
Flat upper moving plate is connected, and horizontal upper moving plate passes through under the vertical power transmission guide rod and level through motor mounting plate, lower bolster
Movable plate is connected to form an entirety, ring flange is arranged in the lower end surface of horizontal lower moving plate, ring flange lower end is arranged shoe and loads
Bar.
In the above-mentioned technical solutions, the development test device further includes computer, dynamic data acquiring instrument and sensor,
Computer is connected by dynamic data acquiring instrument with sensor, and sensor includes displacement sensor and tension-compression sensor, institute's rheme
Displacement sensor is stay-supported type displacement sensor, and sensor main body is mounted on horizontal upper moving plate, and sensor is drawstring through in level and moves
Plate one end is fixed on motor mounting plate, and sensor changes to obtain loading device change in displacement by detecting bracing wire length；Tension and compression
Sensor is S type strain gauge transducer, is mounted on shoe load bar, can measure vertical force suffered by shoe, can by sensor
The shoe stress of real-time change and shoe displacement are acquired by dynamic data acquiring instrument, resulting power and displacement are passed through
Computer software exports out.
A kind of plug stake of offshore self-elevating drilling platform influences development test method to neighbouring shoe, according to the following steps into
Row:
Step 1: inserting sand with sand rain method in sand slot before on-test, and slowly water filling is saturated sand, bankets
By native surface evening after to specified altitude；Shoe model is mounted on loading system load bar, using slide rail, according to reality
It tests after requiring spacing to position shoe position, is locked by fixing bolt；The equipment such as data collecting instrument and computer are connected, and are debugged
Each sensor and computer software；
Step 2: by shoe loading device by the slow numerical value of shoe model be moved downward to it is lucky contacted with native surface,
Four impacted shoes are started at the uniform velocity injection, data collecting instrument and computer start to acquire impacted shoe displacement and hold at this time
Carry force data；After impacted shoe injection to predetermined position, remain static, plug shoe starts the injection into soil, and injection is to pre-
It is extracted upwards after depthkeeping degree to leaving native face；Impacted shoe continues downward injection in the original location, and injection to predetermined position stops,
Stop data acquisition；Off-test will be pulled out in impacted shoe to leaving native face；
Step 3: the interpretation of the impacted shoe in shoe plug front and back under obtained different shoe spacing is obtained
Carry force-displacement curve.Comparison plug front and back carries force-displacement relationship, can obtain being influenced by shoe plug, and neighbouring shoe carries
Power reduces rule, and in a coordinate system using shoe spacing as horizontal axis, bearing capacity reduced rate is that bearing capacity reduced rate-can be obtained in the longitudinal axis
Spacing plot.
The advantages and benefits of the present invention are:
Test of the mini Mod than ruler for influencing research to neighbouring shoe the present invention be directed to jack-up unit plug shoe is set
It is standby, influence of the jack-up unit plug shoe to different spacing adjacent to shoe can be effectively simulated, and the soil body is anti-during loading
Power and the accurate measurement of deformation.Have great importance to jack-up unit stability of foundation and security evaluation.
Detailed description of the invention
Fig. 1 device overall schematic.
Fig. 2 movable pedestal schematic diagram.
Fig. 3 positioning system schematic diagram.
Fig. 4 plugs shoe loading device schematic diagram.
The impacted shoe loading device schematic diagram of Fig. 5.
Fig. 6 loading device fixes schematic diagram.
Fig. 7 control and measuring system schematic diagram.
Fig. 8 bearing capacity reduced rate-spacing plot figure.
Wherein: 1, movable pedestal；2, longitudinal girder steel；3, main lateral girder steel；4, secondary lateral girder steel；5, soil bin；6 insert
Pile pulling boots loading device；7, impacted shoe loading device；8, pedestal steelframe；9, counterweight steel case；10, load-carrying castor；11, it levels
Footing；12, longitudinal rail；13, longitudinal rail sliding block；14, cross slide way；15, cross slide way slide block；16, stepper motor；17,
Lead screw；18, motor mounting plate；19, lower bolster；20, backing plate support column；21, guide rod sliding pair；22, horizontal upper moving plate；23, on
Movable plate lead screw is paid；24, vertical power transmission guide rod；25, horizontal lower moving plate；26, ring flange；27, shoe load bar；28, monoblock type
Electric cylinder；29, electric pushrod；30, guide rod；31, electric cylinder movable plate；32, tilt prop；33, computer；34, controller is loaded；
35, dynamic data acquiring instrument；36, data line.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached
Figure obtains other relevant drawings.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, combined with specific embodiments below furtherly
Bright technical solution of the present invention.
Embodiment 1
A kind of plug stake of offshore self-elevating drilling platform influences development test device to neighbouring shoe, including soil bin 5,
Movable pedestal 1, longitudinal girder steel 2, main lateral girder steel 3, secondary lateral girder steel 4, plug shoe loading device 6 and impacted shoe add
It carries and sets 7, soil bin two sides are provided with movable pedestal, longitudinal girder steel are provided on movable pedestal, in longitudinal steel
It is across between beam and is provided with main lateral girder steel and pair cross perpendicular with longitudinal girder steel and can be moved along it on soil bin
To girder steel, it is provided with the plug shoe loading device that can be moved along it on main lateral girder steel, is provided on secondary lateral girder steel
The impacted shoe loading device that can be moved along it.
Movable pedestal is mobile by 10 reality of load-carrying castor that bottom is arranged；Movable pedestal bottom is provided with leveling bottom
Foot 11 is for fixing position；Movable pedestal is made of pedestal steelframe and the embeddable counterweight steel case 9 in pedestal steelframe 8, is led to
Cross the stabilization that counterweight steel case realizes main lateral girder steel, secondary lateral girder steel.
The quantity of the secondary lateral girder steel is 2, and every secondary lateral girder steel is provided with 2 groups of impacted shoe load stakes
Boots, described 2 secondary lateral girder steels are located at the two sides of main lateral girder steel.
The plug shoe loading device is realized on main lateral girder steel by being set to the longitudinal rail sliding block of bottom
Mobile, impacted shoe loading device realizes the movement on secondary lateral girder steel by being set to the cross slide way slide block of bottom.
The plug shoe loading device include integrated type electric cylinder 28, electric pushrod 29, guide rod 30, electric cylinder movable plate 31 and tiltedly
Electric pushrod is arranged in fagging 32, the bottom of integrated type electric cylinder, and the bottom of electric pushrod connects electric cylinder movable plate, electric pushrod
Two sides are provided with the guide rod for limit, and the tilt prop and cross slide way slide block being arranged in integrated type electric cylinder by two sides connect
It connects.
The impacted shoe load shoe includes stepper motor 16, lead screw 17, motor mounting plate 18, lower bolster 19, pad
It is lower dynamic that plate support column 20, guide rod sliding pair 21, horizontal upper moving plate 22, upper moving plate lead screw pay 23, vertical power transmission guide rod 24, level
Plate 25, ring flange 26, shoe load bar 27；It is connected between motor mounting plate, lower bolster by backing plate support column, stepper motor is set
It is placed in the lower section of motor mounting plate, stepper motor upper end is provided with lead screw, and lead screw passes through motor mounting plate and passes through upper moving plate lead screw
Horizontal upper moving plate is paid to be connected, horizontal upper moving plate by vertical power transmission guide rod through motor mounting plate, lower bolster with
Horizontal lower moving plate is connected to form an entirety, ring flange is arranged in the lower end surface of horizontal lower moving plate, stake is arranged in ring flange lower end
Boots load bar.
The development test device further includes computer, dynamic data acquiring instrument and sensor, and computer passes through dynamic number
It is connected according to Acquisition Instrument with sensor, sensor includes displacement sensor and tension-compression sensor, and displacement sensor is stay-supported displacement
Sensor, sensor main body are mounted on horizontal upper moving plate.Sensor is drawstring through horizontal upper moving plate one end and is fixed on motor installation
On plate, sensor changes to obtain loading device change in displacement by detecting bracing wire length.Tension-compression sensor is S type strain-type sensing
Device is mounted on shoe load bar, can measure vertical force suffered by shoe.By sensor can by the shoe stress of real-time change and
Shoe displacement is acquired by dynamic data acquiring instrument, and resulting power and displacement are exported out by computer software.
Below by taking the shoe for analyzing D=220mm influences with the variation experiment of spacing L on neighbouring shoe as an example, in conjunction with attached drawing
Present invention is further described in detail:
1, test objective
Ocean platform shoe is in stationary state, certain depth in the injection soil body, can measure its bearing capacity size.If surrounding
It is relatively large in diameter shoe and carries out interim plug operation, can be to the fixed shoe surrounding soil disturbance of original minor diameter, small shoe is by it
Influence bearing capacity reduces by a certain percentage.Shoe plug, which can be studied, using the present invention influences shoe bearing capacity around, and analyzes
The relationship of this influence and shoe spacing.Regulation shoe spacing L is the two shoe edge shortest distance of size.
2, test prepares
Test carries out in length × width × height=2m × 2m × 2m model test groove, uses in sand slot before on-test
Sand rain method inserts sand, and slowly water filling is saturated sand, by native surface evening after banketing to specified altitude；
Shoe model is mounted on loading system load bar.Wherein plug shoe diameter D=220mm, impacted shoe
Diameter d=93mm.
It is locked after being positioned according to requirement of experiment spacing to shoe position by fixing bolt using slide rail；Shoe position
As shown, wherein No. 5 be plug shoe, No. 1-4 is impacted shoe, it is corresponding be respectively with shoe spacing L 440mm,
275mm, 220mm, 385mm, corresponding and plug shoe diameter ratio L/D is 2,1.25,1,1.75.
The equipment such as data collecting instrument and computer are connected, and debug each sensor, computer software, that is, before completing test
All preparations.
3, it tests process control and data acquires
The slow numerical value of shoe model is moved downward to by shoe loading device and lucky is contacted with native surface.
Four impacted shoes are started at the uniform velocity injection, data collecting instrument and computer start to acquire impacted shoe at this time
Displacement and carrying force data；
After impacted shoe injection to predetermined position, remain static, plug shoe starts the injection into soil, and injection is to predetermined
It is extracted upwards after depth to leaving native face；
Impacted shoe continues downward injection in the original location, and injection to predetermined position stops.Stop data acquisition.
Off-test will be pulled out in impacted shoe to leaving native face.
4, Data Processing in Experiment
The interpretation of the impacted shoe in shoe plug front and back under obtained different shoe spacing is obtained into bearing capacity-
Displacement curve.Comparison plug front and back carries force-displacement relationship, can obtain being influenced by shoe plug, and neighbouring shoe bearing capacity reduces
Ratio.In a coordinate system using shoe spacing as horizontal axis, bearing capacity reduced rate is that bearing capacity reduced rate-spacing song can be obtained in the longitudinal axis
Line, as shown in Figure 8.
Embodiment 2
A kind of plug stake of offshore self-elevating drilling platform influences development test device to neighbouring shoe, including soil bin 5,
Movable pedestal 1, longitudinal girder steel 2, main lateral girder steel 3, secondary lateral girder steel 4, plug shoe loading device 6 and impacted shoe add
It carries and sets 7, movable pedestal main body is 2.0m × 1.4m × 0.3m rectangle steelframe, and to guarantee steelframe intensity, steelframe uses 60
× 60mm rectangular steel tube.Two steelframes are placed in parallel in soil bin two sides, support superstructure jointly.Steel case is placed in steelframe,
Steel case four sides and bottom surface are surrounded by 1mm thick steel plate, steel case upper end opening, can be added counterweight into steel case when in use and be provided experiment
In required counter-force.Each steelframe bottom can adjust experimental provision integral position, adjustment equipped with 6 load-carrying castors and leveling footing
Footing height guarantees that single unit system is horizontal.
Shoe positioning system is made of 2 longitudinal girder steels and 4 lateral girder steels.Girder steel is all made of I-steel and guarantees whole knot
Structure intensity, Reducing distortion.Two wing base steelframes are upper respectively to install two parallel longitudinal direction girder steels, and longitudinal rail is arranged on longitudinal girder steel,
Longitudinal rail sliding block is housed, fixing bolt is installed in guide rail slide block bottom on guide rail.4 lateral girder steels are parallel to each other placement, horizontal
In on longitudinal rail, lateral girder steel both ends are welded and fixed with longitudinal rail sliding block.Intermediate 2 are main transverse beam, in main transverse beam
Cross slide way is set, cross slide way slide block is housed on guide rail, fixing bolt is installed in cross slide way slide block bottom.Among two main beams
Installation plug shoe loading device.Two sides two are secondary transverse beam, and 2 groups of impacted shoe load dresses are installed in unilateral pair transverse beam
It sets.Above-mentioned shoe positioning system can make to plug shoe and 4 impacted shoes freely move in horizontal plane X and Y both direction
Dynamic, 4 impacted shoes can adjust separately the spacing of itself and plug shoe after plug shoe positioning.
Shoe loading system includes plug shoe loading device and impacted shoe loading device.Plug shoe loading device
It is fixed with cross slide way slide block using tilt prop and bolt, electric pushrod and 2 electric cylinder movable plates is driven by integrated type electric cylinder, it is right
Shoe dd is loaded, and electric cylinder movable plate two sides are that guide rod control loading direction is vertical, and impacted shoe loading system is by solid
Determine mechanism and movement mechanism composition.Fixed mechanism determines loading device integral position and guarantees that loading direction is vertical, including stepping
Motor, lead screw, motor mounting plate, lower bolster, backing plate support column, lower bolster fixing bolt, guide rod sliding pair, fixed mechanism pass through
Lower bolster fixing bolt is fixed with secondary transverse beam.Movement mechanism includes horizontal upper moving plate, upper moving plate lead screw is paid, vertical power transmission is oriented to
Bar, horizontal lower moving plate, ring flange and shoe load bar.Wherein the vertical power transmission guide rod of movement mechanism is passed through motor installation
Plate and lower bolster guide rod sliding pair.Loading system drives lead screw rotation by stepper motor, and upper moving plate lead screw, which is paid, drives upper moving plate
Movement, upper moving plate drive horizontal lower moving plate to move by vertical power transmission guide rod, and horizontal lower moving plate is by shoe load bar to stake
Boots load.Tension-compression sensor is installed in lower moving plate bottom surface, and the sensor other end connects shoe load bar, and shoe load bar passes through screw thread
It is fixed with shoe model.Displacement sensor is installed between top plate and upper padding plate.Loading Control System is by stepper motor motor, multi-pass
Track control unit composition.It is 0- 10mm/s, constant speed load movement that vertical velocity amplitude, which may be implemented, in the system；Vertical motion amplitude
For 0-35cm.The loading velocity of a certain shoe can be individually controlled by Multi Channel Controller, load depth and maintenance condition.It surveys
Amount system includes tension-compression sensor, displacement sensor, dynamic data acquiring instrument and computer.The purpose of this test is research shoe
To the influence of neighbouring shoe after plug.By the pull pressure sensor and displacement sensor being pre-installed on shoe load bar,
The vertical displacement that vertical force is answered can be measured.Data acquisition is carried out by dynamic data acquiring instrument, it is anti-that ground can be acquired in real time
Power and shoe displacement, acquisition precision is high, directly can export out by computer software by collected power and displacement.
Embodiment 3
On the basis of embodiment, 2 secondary lateral girder steels can be changed position, be positioned in one in main lateral girder steel
Side when the measurable impacted shoe loading device of multiple groups is co-located at plug shoe loading device side, plugs shoe and by shadow
Ring the interaction between shoe.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. a kind of offshore self-elevating drilling platform plug stake influences development test device to neighbouring shoe, it is characterised in that: including
Soil bin, movable pedestal, longitudinal girder steel, main lateral girder steel, secondary lateral girder steel, plug shoe loading device and impacted stake
Boots loading device is provided with movable pedestal in soil bin two sides, longitudinal girder steel is provided on movable pedestal, in longitudinal direction
It is across between girder steel and is provided with main lateral girder steel and pair perpendicular with longitudinal girder steel and can be moved along it on soil bin
Lateral girder steel is provided with the plug shoe loading device that can be moved along it on main lateral girder steel, is arranged on secondary lateral girder steel
There is the impacted shoe loading device that can be moved along it.
2. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the movable pedestal is mobile by the load-carrying castor reality that bottom is arranged.
3. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the movable pedestal bottom is provided with leveling footing for fixing position.
4. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the movable pedestal is made of pedestal steelframe and the embeddable counterweight steel case in pedestal steelframe.
5. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the quantity of the secondary lateral girder steel is 2, and every secondary lateral girder steel is provided with 2 groups of impacted shoes and adds
Shoe is carried, described 2 secondary lateral girder steels are located at the two sides of main lateral girder steel.
6. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the plug shoe loading device is realized by being set to the longitudinal rail sliding block of bottom in main lateral steel
Movement on beam, impacted shoe loading device are realized on secondary lateral girder steel by being set to the cross slide way slide block of bottom
It is mobile.
7. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the plug shoe loading device includes integrated type electric cylinder, electric pushrod, guide rod, electric cylinder movable plate
And electric pushrod is arranged in tilt prop, the bottom of integrated type electric cylinder, the bottom of electric pushrod connects electric cylinder movable plate, electric pushrod
Two sides be provided with the guide rod for limit, the tilt prop and cross slide way slide block being arranged in integrated type electric cylinder by two sides
Connection.
8. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the impacted shoe load shoe includes stepper motor, lead screw, motor mounting plate, lower bolster, backing plate
Support column, guide rod sliding pair, horizontal upper moving plate, upper moving plate lead screw pay, vertical power transmission guide rod, horizontal lower moving plate, ring flange, stake
Boots load bar；It is connected between motor mounting plate, lower bolster by backing plate support column, stepper motor is set under motor mounting plate
Side, stepper motor upper end are provided with lead screw, and lead screw pays horizontal upper moving plate by upper moving plate lead screw across motor mounting plate and is connected
It connects, horizontal upper moving plate through the vertical power transmission guide rod of motor mounting plate, lower bolster with horizontal lower moving plate by being connected structure
At an entirety, ring flange is set in the lower end surface of horizontal lower moving plate, shoe load bar is arranged in ring flange lower end.
9. a kind of offshore self-elevating drilling platform plug stake according to claim 1 influences development test dress to neighbouring shoe
It sets, it is characterised in that: the development test device further includes computer, dynamic data acquiring instrument and sensor, and computer passes through
Dynamic data acquiring instrument is connected with sensor, and sensor includes displacement sensor and tension-compression sensor, and institute's displacement sensors are
Stay-supported type displacement sensor, sensor main body are mounted on horizontal upper moving plate, and sensor is drawstring through horizontal upper moving plate one end and fixes
On motor mounting plate；Tension-compression sensor is S type strain gauge transducer, is mounted on shoe load bar.
10. a kind of offshore self-elevating drilling platform plug stake influences development test method to neighbouring shoe, which is characterized in that according to
The following steps carry out:
Step 1: inserting sand with sand rain method in sand slot before on-test, and slowly water filling is saturated sand, bankets to rule
Determine native surface evening after height；Shoe model is mounted on loading system load bar, using slide rail, is wanted according to experiment
After asking spacing to position shoe position, locked by fixing bolt；
Step 2: by shoe loading device by the slow numerical value of shoe model be moved downward to it is lucky contacted with native surface, by four
A impacted shoe starts at the uniform velocity injection, data collecting instrument and the impacted shoe displacement of computer acquisition and carrying force data；By
After influencing shoe injection to predetermined position, remain static, plug shoe starts the injection into soil, after injection to predetermined depth upwards
It extracts to leaving native face；Impacted shoe continues downward injection in the original location, and injection to predetermined position stops, and stops data and adopts
Collection；Off-test will be pulled out in impacted shoe to leaving native face；
Step 3: the interpretation of the impacted shoe in shoe plug front and back under obtained different shoe spacing is carried
Force-displacement curve, comparison plug front and back carry force-displacement relationship, can obtain being influenced by shoe plug, and neighbouring shoe bearing capacity drops
Low rule, in a coordinate system using shoe spacing as horizontal axis, bearing capacity reduced rate is that bearing capacity reduced rate-spacing song can be obtained in the longitudinal axis
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991917.0A CN109098217B (en) | 2018-08-29 | 2018-08-29 | Device and method for researching influence of offshore jack-up drilling platform plug pile on adjacent pile shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991917.0A CN109098217B (en) | 2018-08-29 | 2018-08-29 | Device and method for researching influence of offshore jack-up drilling platform plug pile on adjacent pile shoe |
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| Publication Number | Publication Date |
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| CN109098217A true CN109098217A (en) | 2018-12-28 |
| CN109098217B CN109098217B (en) | 2023-06-20 |
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| CN201810991917.0A Active CN109098217B (en) | 2018-08-29 | 2018-08-29 | Device and method for researching influence of offshore jack-up drilling platform plug pile on adjacent pile shoe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106929A (en) * | 2019-06-03 | 2019-08-09 | 天津大学前沿技术研究院 | It is a kind of to plug stake to the model test apparatus and test method of neighbouring grouped piles influence |
| CN113026831A (en) * | 2021-03-26 | 2021-06-25 | 江苏科技大学 | Self-elevating platform pile shoe operation simulation experiment device and experiment control method thereof |
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| CN109098217B (en) | 2023-06-20 |
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