CN108301435A - A kind of automation prevents liquefied offshore type bucket base and its construction method - Google Patents
A kind of automation prevents liquefied offshore type bucket base and its construction method Download PDFInfo
- Publication number
- CN108301435A CN108301435A CN201810008469.8A CN201810008469A CN108301435A CN 108301435 A CN108301435 A CN 108301435A CN 201810008469 A CN201810008469 A CN 201810008469A CN 108301435 A CN108301435 A CN 108301435A
- Authority
- CN
- China
- Prior art keywords
- offshore type
- bucket base
- type bucket
- suction tube
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
Abstract
It includes that basic body and automatic liquid chemoprevention control system to prevent liquefied offshore type bucket base and its construction method, the offshore type bucket base the invention discloses a kind of automation；Offshore type bucket base main body includes outer barrel, drain bar, interior bucket, split bolt and drain bar top pressure closure；It includes pore water pressure sensor, drain interface, sensor interface panel, Acquisition Instrument, alarm and water pump that automatic liquid chemoprevention, which controls system,；When the excess pore water pressure in the sea bed of Acquisition Instrument collected offshore type bucket base periphery is more than sea bed liquefaction early warning value, alarm alarms and starts pumping for water pump automatically, offshore type bucket base periphery seabed soil Pore Pressure is reduced in time, excludes sea bed liquefaction risk.The present invention uses suction tube technology, without excavating installation offshore type bucket base, forms offshore type bucket base directly in sea bed or riverbed, realizes the fast and safe construction of offshore type bucket base, saved construction cost and duration.
Description
Technical field
The present invention relates to the offshore type basic technology field of ocean geotechnical engineering more particularly to a kind of automation prevention liquefaction
Offshore type bucket base and its construction method.
Background technology
As China builds the strategic plan of ocean power and Development of Marine economy, to improve the ability of marine resources development
The paces developed with quickening ocean regional economy, China has pushed coastline protection, harbour to build energetically, important island is built,
The progress of all kinds of ocean engineerings such as offshore engineering and marine engineering, offshore type bucket base have all played important in these engineerings
Effect.
Offshore type bucket base often faces the factors such as wave load, superstructure vibration, earthquake during long-term operation
Influence, the effects that wave load, structure itself are vibrated, will gradually form super quiet in the sea bed around offshore type bucket base
The accumulation of pore water pressure；Earthquake shearing wave effect will directly generate excess pore water pressure in the sea bed around basis.Sea
When excess pore water pressure in bed is more than liquefaction critical value, seabed soil will be caused to liquefy and induce marine engineering geology calamity
Evil.Sea bed liquefaction will result directly in offshore type bucket base and sliding or depression occurs, or even cause offshore type bucket base top
The whole overturning of structure, so as to cause casualties and bring huge property loss.
Currently, common is mainly for the sea bed liquefaction administering method around ocean engineering basis：To liquefaction zone soil
Body is inserted into drainpipe reduces the excess pore water pressure of liquefaction zone by the way of draining or drawing water certainly, to extenuating or
Eliminate sea bed liquefaction.But this method has following deficiency：1, it cannot accurately and timely prevent the sea bed liquid around ocean engineering basis
Change, generally just takes this method to carry out sea bed liquefaction after sea bed liquefaction occurs and administer；2, this method is not suitable for complex environment
Marine site or blue water, such region be not easy carry out drainpipe installation and operation of drawing water.
Therefore, to prevent and administering the harm that sea bed liquefies to offshore type bucket base engineering, complicated for marine environment,
Marine engineering personnel ocean engineering present situation in short supply is badly in need of a kind of construction is simple and comprehensively and effectively prevents liquefied offshore type
Bucket base.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of automations to prevent liquefied offshore type barrel shape
Basis and its construction method.
The technical solution adopted by the present invention to solve the technical problems is：A kind of liquefied offshore type barrel shape of automation prevention
Basis, including offshore type bucket base main body and automatic liquid chemoprevention control system；The offshore type bucket base main body includes outer
Bucket, drain bar, interior bucket, split bolt and drain bar top pressure closure；Said tub, drain bar, the interior bucket of ecto-entad setting are logical
It crosses split bolt closely to connect, encapsulation process is done in split bolt junction；Said tub is by outer barrel main body, through-hole, cutting shoe and water
Flat ring shape steel plate forms；The through-hole is circumferentially through the bucket wall for being distributed in outer barrel；The cutting shoe is set to interior bucket, drain bar and outer
The lower port of bucket, is obliquely installed in integrated both sides；The horizontal annular steel plate is arranged above outer barrel bottom part body, cutting shoe, and one
On the other hand aspect can improve the strength and stiffness of outer barrel main body and cutting shoe junction for supporting suction tube；The level
Doughnut-shaped steel plate and the sealing of interior bucket junction；The drain bar top pressure closure is made of top cover body and bolt；The top cover body
Above drain bar, it is fixed in outer barrel and inner barr by bolt seal；
The automatic liquid chemoprevention control system include pore water pressure sensor, drain interface, sensor interface panel,
Acquisition Instrument, alarm and water pump；The pore water pressure sensor is by pore water pressure sensor probe, sensor conductor and biography
Sensor channel forms；The pore water pressure sensor probe is fixed on through-hole, is connect with sensor conductor；The sensor
Conducting wire is drawn by the sensor passage on outer barrel inner wall, is connect with sensor interface panel；The drain interface
It is seal-installed on drain bar top pressure closure with sensor interface panel；The drain interface is connected by drainpipe and water pump
It connects, the sensor interface panel is connect by conducting wire with Acquisition Instrument；The Acquisition Instrument, alarm and water pump are sequentially connected, and are adopted
Collection instrument can be read and be preserved automatically pore water pressure force data by pore water pressure sensor, and alarm can adopt Acquisition Instrument
The pore water pressure force data of collection is read out, early warning and processing；When Acquisition Instrument collected offshore type bucket base periphery sea bed
In excess pore water pressure when being more than sea bed liquefaction early warning value, alarm alarms and starts pumping for water pump automatically, in time reduction
Offshore type bucket base periphery seabed soil Pore Pressure excludes sea bed liquefaction risk.
Further, said tub is steel drum；The interior bucket is PVC barrels；The upper surface of the interior bucket and outer barrel upper surface
It flushes；The multiple through-holes distribution for being circumferentially distributed in said tub bucket wall is arranged in the easy liquid determined according to sea bed geological mapping data
Change soil layer region, can be uniformly distributed in length and breadth or crisscross uniformly distributed；The horizontal annular steel plate structure that the cutting shoe is arranged with its top
At cavity in slip casting, form injecting cement paste, the dead weight for improving offshore type bucket base, and increase offshore type bucket base
Stability；The drain bar is arranged in arcuation, and surface is equipped with loaded filter, the obstructed soil particle of water flowing；Multiple drain bars according to
Rounded after secondary head and the tail connection, side wall of the outer surface respectively with said tub and interior bucket fits closely；The split bolt is logical
It crosses rubber ring and is sealed processing；The drain bar top pressure closure can be by way of welding or breaking fluid sealant with inner barrel and outer barrel
It realizes and is tightly connected.
Further, the pore water pressure sensor genesis analysis is an installation group in a row through-hole, is usually needed
Four installation groups are respectively arranged on two orthogonal directions of outer barrel；It is appropriate to increase when offshore type bucket base is relatively large in diameter
The installation group number of pore water pressure sensor；The test surfaces of the pore water pressure of the pore water pressure sensor probe are (permeable
Stone) it is tangent with the lateral wall of outer barrel, for seabed soil.
Further, the drain interface and sensor interface panel use mechanical seal interfacing, ensure draining
It is fully sealed at interface tube and sensor interface panel, it is exhausted with external environment water, air bound；The drainpipe and conducting wire length in reserve
It is determined at a distance from water pump, Acquisition Instrument according to drain bar top pressure closure respectively.
A kind of automation prevents the construction method of liquefied offshore type bucket base, and this approach includes the following steps：
(1) in the outer barrel upper installing hole gap water pressure sensor monitoring group of offshore type bucket base main body：First pore water
The pore water pressure test surfaces (permeable stone) and the lateral wall of outer barrel of pressure sensor probe are tangent, are fixedly installed on through-hole；
Pore water pressure sensor probe is connect with sensor conductor, and sensor conductor is logical by the sensor on outer barrel inner wall
It draws in road；Outer barrel main body, drain bar, interior bucket are closely joined together by ecto-entad by split bolt；By sensor conductor
After being connected to the inside of sensor interface panel, drain bar top pressure closure is placed in above drain bar, is bolted on outer
On bucket and interior bucket；Drain interface is connect with drainpipe, sensor interface panel is connect with conducting wire；
(2) underwater portion of the offshore type bucket base main body being completed and liquefaction prevention system (is wrapped by barge
Including pore water pressure sensor, drain interface, sensor interface panel) integral hoisting to the marine site installed, makes
Offshore type bucket base main body is slowly submerged in the seawater with loop wheel machine so that seawater is full of in the drainage channel of drain bar；To
Suction tube is installed, suction tube is placed in above the cutting shoe of offshore type bucket base main body in offshore type bucket base main body；Offshore type
Bucket base main body and suction tube uniformly sink under Gravitative Loads, after waiting for cutting shoe completely into sea bed or riverbed, from suction
Cylinder top vent hole vacuumizes, and suction tube sucks the soil body of offshore type bucket base bottom part body in bucket, offshore type barrel shape base
Plinth main body and suction tube will uniformly sink；
(3) until offshore type bucket base main body is sunk down at designed elevation, stop taking out to suction tube top vent hole
Vacuum；
(4) block stone is uniformly thrown to the gap between offshore type bucket base main body and suction tube, and passes through suction tube top
The high-pressure gas injection into suction tube of portion's venthole, joint loop wheel machine slowly lift by crane suction tube upwards；By in the slow lifting process of suction tube,
Continue the gap between offshore type bucket base main body and suction tube and uniformly throws block stone；
(5) when suction tube bottom surface and the surface layer of sea bed or riverbed are apart from certain altitude, stop the high pressure injection into suction tube
Gas, and air pressure in slow release suction tube；When air pressure is equal to atmospheric pressure in suction tube, continues through loop wheel machine and slowly lift by crane upwards
Suction tube, and continue the gap between offshore type bucket base main body and suction tube and uniformly throw block stone；Suction tube is complete
After lifting, it is spare to hang construction site；
(6) after waiting for offshore type bucket base main body construction, basic superstructure installation is carried out, and carry out liquefaction prevention
The above water (including Acquisition Instrument, alarm and water pump) of system connects：Drainpipe, conducting wire are connected with water pump, Acquisition Instrument respectively
It connects, and Acquisition Instrument, alarm and water pump is sequentially connected.
Further, in the step (2), the internal diameter of the suction tube is more than the horizontal annular steel plate being arranged above cutting shoe
Internal diameter；Rubber ring is installed in suction tube bottom with horizontal annular steel plate junction, ensures suction tube and offshore type bucket base master
It is tightly connected between body, prevents suction tube leak gas leakage in sinking watching；The volume of the suction tube is more than offshore type barrel shape base
Plinth main body sinks down into the soil discharge quantity of designed elevation.
Further, in the step (5), the suction tube bottom surface is with sea bed or riverbed surface layer distance a by suction tube
The soil body is determined with suction medial wall of the tube unit height frictional resistance f, suction float buoyancy F in interior atmospheric pressure value P and suction tube.The step
Suddenly in (5), the amount of fill and filling height of throwing block stone are determined according to the rigidity of offshore type bucket base and stability Design,
Usually a=n (P-F)/f, wherein n are safety coefficient.
Further, the suction tube inner barrel wall smears mould oil, convenient for its sinking and removal, and ensures sinking and removal
Air-tightness in the process.
Further, when basis of the offshore type bucket base as important building, structures or equipment, to improve basis
Rigidity and stability, can along suction tube outer barrel transfer Grouting Pipe, slip casting is carried out between the soil body to suction tube bottom and block stone,
To reinforce the soil body in offshore type bucket base.
It further, will when offshore type bucket base is applied to breakwater, the island wall of man-made island, harbour shore protection or cofferdam
Offshore type bucket base main body connects the up to water surface or more, while backfill or slip casting are to designed elevation into bucket, without performing base
Foundation top board；Offshore type bucket base is applied to the underwater foundation of ocean engineering, when such as production platform basis, wind tower basis, answers
Base roof plate is performed under water.
Compared with prior art, beneficial effects of the present invention：
1, offshore type bucket base is installed using suction tube technology in the present invention, without excavating installation offshore type barrel shape
Basis forms offshore type bucket base directly in sea bed or riverbed, realizes the fast and safe construction of offshore type bucket base,
Construction cost and duration have been saved, traditional offshore open type bucket base common engineering of sinker technique when excavating has been avoided and asks
Topic (such as offshore type bucket base is tilted, deviated, the super excavation in offshore type bucket base bottom, quicksand), and to offshore type barrel shape
The surrounding enviroment in foundation construction place influence small；Offshore type bucket base sinking construction method of installation provided by the invention safely may be used
It leans on, is convenient and efficient, there is wide future in engineering applications.
2, the soil body in the present invention in offshore type bucket base is without excavating, directly by throwing the methods of block stone, slip casting
The improved treatment for carrying out the soil body in bucket base is conducive to shorten the construction period on basis, saves construction cost.
3, in the present invention block stone thrown have compacting offshore type bucket base cutting shoe, increase offshore type bucket base from
The effect of weight is conducive to the globality and stability that improve offshore type bucket base.
4, offshore type bucket base is open type bucket base in the present invention, easily realizes the batch life of large scale bucket base
Production and installation, can be applied to the oceans such as major port, breakwater, cofferdam and island construction project.
5, in the present invention suction tube as offshore type bucket base install machinery can Reusability, when there is multigroup identical offshore
When formula bucket base needs installation, the construction of offshore type bucket base can be carried out in batches；When offshore type bucket base base circle
Internal diameter be less than suction tube, and offshore type bucket base sink soil discharge quantity be less than suction tube volume when, can be repeated for such phase
Like the offshore type bucket base engineering of structure.
6, the present invention forms drainage channel by the drain bar between the outer barrel and inner barr of offshore type bucket base in cavity,
The excess pore water pressure in seabed soil, Neng Gouji around offshore type bucket base are reduced rapidly by the way of pumping for water pump
When dissipate the excess pore water pressure generated in seabed soil by wave load, structural vibration or earthquake, thus scientificlly and effectively
Prevent and administer the liquefaction disaster of seabed soil around offshore type bucket base；Draining plate surface is loaded filter so that offshore type
The soil particle of sea bed during the installation process of bucket base will not enter in drain bar, ensure that offshore type bucket base in release sea
Sea bed soil particle will not be lost in during excess pore water pressure in bed, and draining board channel is avoided to be blocked by soil particle.
7, the present invention determines easy liquefaction soil layers region according to sea bed geological mapping data, is located in the easy liquefaction soil layers region
Offshore type bucket base outer barrel on uniformly arrange through-hole, adjacent vertical through holes can be uniformly distributed or crisscross uniformly distributed in length and breadth,
Through-hole is only located at easy liquefaction soil layers region, is on the one hand conducive to the adverse effect for reducing trepanning to outer barrel strength and stiffness, another
Aspect is conducive to efficiently prevent and administer the seabed soil liquefaction disaster of offshore type bucket base.
8, system is controlled using automatic liquid chemoprevention in the present invention, Acquisition Instrument reads and preserve automatically pore water pressure sensor
Pore water pressure force data in the easy liquefaction soil layers region of sea bed monitored, the pore water pressure number that alarm acquires Acquisition Instrument
According to be read out, early warning and processing, when the excess pore water pressure value that alarm receives be more than sea bed liquefy early warning value when, it is alert
Report device alarms and starts pumping for water pump automatically, reduces offshore type bucket base periphery seabed soil Pore Pressure, row in time
Except sea bed liquefaction risk, meanwhile, successfully manage the ocean engineering present situation that marine environment is complicated, marine engineering personnel are in short supply.
9, the pore water pressure variation in the easy liquefaction soil layers region of sea bed that Acquisition Instrument is acquired and preserved in real time in the present invention
Data can be used for the pore pressure response feature of research and application region sea bed, carry out the liquefied scientific research of related sea bed；Meanwhile it receiving
The pore water pressure delta data and result of study collected can be that the basis of other ocean engineerings of the region or zone similarity is set
The meter reference and guidance certain with offer is built.
Description of the drawings
Fig. 1 is a kind of vertical view of offshore type bucket base of the present invention；
Fig. 2 is a kind of side view of offshore type bucket base of the present invention；
Fig. 3 is the AA sections of Fig. 1；
Fig. 4 is the BB sections of Fig. 2；
Fig. 5 (a) is offshore type bucket base, the interior suction tube installed of offshore type bucket base and rubber ring schematic diagram；
Fig. 5 (b) is that suction tube venthole vacuumizes and suction tube sucks offshore type bucket base bottom soil body in bucket and shows
It is intended to；
Fig. 5 (c) is that offshore type bucket base is sunk down into designed elevation by suction tube；
Fig. 5 (d) be by venthole into suction tube high-pressure gas injection, lift by crane suction tube upwards, to offshore type bucket base
Uniformly throw block stone schematic diagram in gap between suction tube；
Fig. 5 (e) is soil excavation in offshore type bucket base to base roof plate bottom surface absolute altitude schematic diagram below；
Fig. 5 (f) is to perform offshore type bucket base top plate schematic diagram；
In figure, outer barrel 1, outer barrel main body 1-1, through-hole 1-2, cutting shoe 1-3, injecting cement paste 1-4, horizontal annular steel plate 1-5, draining
Plate 2, interior bucket 3, split bolt 4, drain bar top pressure closure 5, top cover body 5-1, bolt 5-2, pore water pressure sensor probe
6-1, sensor conductor 6-2, sensor passage 6-3, drain interface 7, sensor interface panel 8, suction tube 9, venthole 9-
1, rubber ring 10, the soil body 11, block stone 12, base roof plate 13.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown in Figs 1-4, a kind of automation provided in this embodiment prevents liquefied offshore type bucket base, including offshore
Formula bucket base main body and automatic liquid chemoprevention control system；The offshore type bucket base main body includes outer barrel 1, drain bar 2, interior
Bucket 3, split bolt 4 and drain bar top pressure closure 5；Said tub 1, drain bar 2, the interior bucket 3 of ecto-entad setting pass through to drawing
Bolt 4 closely connects, and encapsulation process is done in 4 junction of split bolt；Said tub 1 is by outer barrel main body 1-1, through-hole 1-2, cutting shoe 1-
3 and horizontal annular steel plate 1-5 is formed；The through-hole 1-2 is circumferentially through the bucket wall for being distributed in outer barrel 1；The cutting shoe 1-3 is set to
The lower port of interior bucket 1, drain bar 2 and outer barrel 3 is obliquely installed in integrated both sides；The horizontal annular steel plate 1-5 is arranged in outer barrel
Above the bottoms main body 1-1, cutting shoe 1-3, on the one hand it is used to support suction tube 9, on the other hand can improves outer barrel main body 1-1 and sword
The strength and stiffness of the junctions foot 1-3；The horizontal annular steel plate 1-5 and the sealing of 3 junction of interior bucket；Drain bar sealing top
Lid 5 is made of top cover body 5-1 and bolt 5-2；The top cover body 5-1 is mounted on 2 top of drain bar, close by bolt 5-2
Sealing is scheduled in outer barrel 1 and interior bucket 3；
It includes pore water pressure sensor, drain interface 7, sensor interface panel that the automatic liquid chemoprevention, which controls system,
8, Acquisition Instrument, alarm and water pump；The pore water pressure sensor is led by pore water pressure sensor probe 6-1, sensor
Line 6-2 and sensor passage 6-3 compositions；The pore water pressure sensor probe 6-1 is fixed on through-hole 1-2, with sensor
Conducting wire 6-2 connections；The sensor conductor 6-2 is drawn by the sensor passage 6-3 on 1 inner wall of outer barrel, with sensing
Device interface panel 8 connects；The drain interface 7 and sensor interface panel 8 are seal-installed on drain bar top pressure closure 5
On；The drain interface 7 is connect by drainpipe with water pump, and the sensor interface panel 8 is connected by conducting wire and Acquisition Instrument
It connects；The Acquisition Instrument, alarm and water pump are sequentially connected, and Acquisition Instrument can be read and protected automatically by pore water pressure sensor
Deposit pore water pressure force data, the pore water pressure force data that alarm can acquire Acquisition Instrument be read out, early warning and processing；When
It is alert when excess pore water pressure in the sea bed of Acquisition Instrument collected offshore type bucket base periphery is more than sea bed liquefaction early warning value
Report device alarms and starts pumping for water pump automatically, reduces offshore type bucket base periphery seabed soil Pore Pressure, row in time
Except sea bed liquefaction risk.
Specifically, said tub 1 is steel drum；The interior bucket 3 is PVC barrels；The upper surface of the interior bucket 1 and 3 upper end of outer barrel
Face flushes；The multiple through-hole 1-2 distribution settings for being circumferentially distributed in 1 barrel of wall of said tub are determined according to sea bed geological mapping data
Easy liquefaction soil layers region, can be uniformly distributed in length and breadth or crisscross uniformly distributed；The horizontal loops that the cutting shoe 1-3 is arranged with its top
Slip casting in the cavity that shape steel plate 1-5 is constituted forms injecting cement paste 1-4, the dead weight for improving offshore type bucket base, and increase from
The stability of bank formula bucket base；The drain bar 2 is arranged in arcuation, and surface is equipped with loaded filter, the obstructed soil particle of water flowing；It is more
A drain bar 2 is sequentially connected end to end rear rounded, and outer surface is closely pasted with the side wall of said tub 1 and interior bucket 3 respectively
It closes；The split bolt 4 is sealed processing by rubber ring；The drain bar top pressure closure 6 can lead to interior bucket 1 and outer barrel 3
It crosses welding or beats the mode of fluid sealant and realize sealed connection.
Specifically, the pore water pressure sensor genesis analysis is an installation group in a row through-hole 1-2, is usually needed
Four installation groups are respectively arranged on two orthogonal directions of outer barrel 1；It is appropriate to increase when offshore type bucket base is relatively large in diameter
Add the installation group number of pore water pressure sensor；The test surfaces of the pore water pressure of the pore water pressure sensor probe 6-1
(permeable stone) and the lateral wall of outer barrel 1 are tangent, for seabed soil.
Specifically, the drain interface 7 and sensor interface panel 8 use mechanical seal interfacing, ensure draining
It is fully sealed at interface tube 7 and sensor interface panel 8, it is exhausted with external environment water, air bound；The drainpipe and the reserved length of conducting wire
Degree is determined according to drain bar top pressure closure 5 at a distance from water pump, Acquisition Instrument respectively.
The present embodiment provides the construction method that a kind of automation prevents liquefied offshore type bucket base, this method include with
Lower step：
(1) in 1 upper installing hole gap water pressure sensor monitoring group of the outer barrel of offshore type bucket base main body：First pore water
The pore water pressure test surfaces (permeable stone) and the lateral wall of outer barrel 1 of pressure sensor probe 6-1 are tangent, are fixedly installed in through-hole
On 1-2；Pore water pressure sensor probe 6-1 is connect with sensor conductor 6-2, and sensor conductor 6-2 is by being mounted on outer barrel 1
Sensor passage 6-3 on inner wall is drawn；Ecto-entad is tight by split bolt 4 by outer barrel main body 1-1, drain bar 2, interior bucket 3
It is close to link together；After sensor conductor 6-2 to be connected to the inside of sensor interface panel 8, drain bar top pressure closure 5 is set
Above drain bar 2, it is fixed in outer barrel 1 and interior bucket 3 by bolt 5-2；Drain interface 7 is connect with drainpipe, will be passed
Sensor interface panel 8 is connect with conducting wire；
As shown in Fig. 5 (a), Fig. 5 (b), the offshore type bucket base main body being completed and liquefaction are prevented by barge
Underwater portion (including pore water pressure sensor, drain interface 7, sensor interface panel 8) integral hoisting of system extremely needs
The marine site installed slowly is submerged offshore type bucket base main body in the seawater using loop wheel machine so that the row of drain bar 2
Seawater is full of in aquaporin；Suction tube 9 is installed into offshore type bucket base main body, suction tube 9 is placed in offshore type bucket base
Above the cutting shoe 1-3 of main body；Offshore type bucket base main body and suction tube 9 uniformly sink under Gravitative Loads, wait for that cutting shoe 1-3 is complete
Enter after sea bed or riverbed entirely, is vacuumized from 9 top vent hole 9-1 of suction tube, suction tube 9 is offshore type bucket base main body
The soil body 11 of bottom sucks in bucket, and offshore type bucket base main body and suction tube 9 will uniformly sink；The internal diameter of the suction tube 9
More than the internal diameter for the horizontal annular steel plate 1-5 being arranged above cutting shoe 1-3；9 bottom of suction tube and the junctions horizontal annular steel plate 1-5
Rubber ring 10 is installed, ensures to be tightly connected between suction tube 9 and offshore type bucket base main body, prevents suction tube in sinking watching
9 leak gas leakage；The volume of suction tube 9 is more than the soil discharge quantity that offshore type bucket base main body sinks down into designed elevation；In suction tube 9
Bucket wall smears mould oil, convenient for its sinking and removal, and ensures the air-tightness during sinking and removal.
As shown in Fig. 5 (c), until offshore type bucket base main body is sunk down at designed elevation, stop pushing up to suction tube 9
Portion venthole 9-1 is vacuumized.
As shown in Fig. 5 (d), block stone 12 is uniformly thrown to the gap between offshore type bucket base main body and suction tube 9, and
By 9 top vent hole 9-1 high-pressure gas injections into suction tube 9 of suction tube, joint loop wheel machine slowly lifts by crane suction tube 9 upwards；It will inhale
In 9 slow lifting process of power cylinder, block stone is uniformly thrown in the gap continued between offshore type bucket base main body and suction tube 9
12；When 9 bottom surface of suction tube and the surface layer of sea bed or riverbed are apart from certain altitude, stop the high-pressure gas injection into suction tube 9, and delay
Air pressure in On The Drug Release suction tube 9；9 bottom surface of the suction tube is with sea bed or riverbed surface layer distance a by atmospheric pressure value P in suction tube 9
It is determined with 9 madial wall unit height frictional resistance f of suction tube, suction float buoyancy F with the soil body 11 in suction tube 9.The step (5)
In, the amount of fill and filling height of throwing block stone 12 are determined according to the rigidity of offshore type bucket base and stability Design, are led to
It is often a=n (P-F)/f, wherein n is safety coefficient.When air pressure is equal to atmospheric pressure in suction tube 9, it is slow to continue through loop wheel machine
Lifting suction tube 9 upwards, and continue the gap between offshore type bucket base main body and suction tube 9 and uniformly throw block stone 12；
After suction tube 9 completely lifting, it is spare to hang construction site.
After waiting for offshore type bucket base main body construction, basic superstructure installation is carried out, and carries out liquefaction prevention system
The above water (including Acquisition Instrument, alarm and water pump) of system connects：Drainpipe, conducting wire are connect with water pump, Acquisition Instrument respectively,
And Acquisition Instrument, alarm and water pump are sequentially connected.
When basis of the offshore type bucket base as important building, structures or equipment, for improve basis rigidity and
Stability can transfer Grouting Pipe along 9 outer barrel of suction tube, carry out slip casting between the soil body 11 and block stone 12 of 9 bottom of suction tube, use
To reinforce the soil body in offshore type bucket base.
When offshore type bucket base is applied to breakwater, the island wall of man-made island, harbour shore protection or cofferdam, by offshore type barrel shape
Basic body 1-1 connects the up to water surface or more, while backfill or slip casting are to designed elevation into bucket, without performing base roof plate
13；Offshore type bucket base is applied to the underwater foundation of ocean engineering, when such as production platform basis, wind tower basis, such as Fig. 5
(e), shown in Fig. 5 (f), base roof plate 13 is performed under water.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and it cannot be construed to limiting the scope of the invention in any way.Based on the explanation herein, the technology of this field
Personnel would not require any inventive effort the other specific implementation modes that can associate the present invention, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of automation prevents liquefied offshore type bucket base, it is characterised in that：Including offshore type bucket base main body and
Automatic liquid chemoprevention controls system；The offshore type bucket base main body include outer barrel (1), drain bar (2), interior bucket (3), to draw spiral shell
Bolt (4) and drain bar top pressure closure (5)；Said tub (1), drain bar (2), the interior bucket (3) of ecto-entad setting pass through to drawing
Bolt (4) closely connects, and encapsulation process is done in split bolt (4) junction；Said tub (1) is by outer barrel main body (1-1), through-hole
(1-2), cutting shoe (1-3) and horizontal annular steel plate (1-5) composition；The through-hole (1-2) is circumferentially through the bucket for being distributed in outer barrel (1)
Wall；The cutting shoe (1-3) is set to interior bucket (1), the lower port of drain bar (2) and outer barrel (3), is obliquely installed in integrated both sides；
Horizontal annular steel plate (1-5) setting is on the one hand used to support suction above the bottom outer barrel main body (1-1), cutting shoe (1-3)
Cylinder (9), on the other hand can improve the strength and stiffness of outer barrel main body (1-1) and the junction cutting shoe (1-3)；The horizontal annular
Steel plate (1-5) and the sealing of interior bucket (3) junction；The drain bar top pressure closure (5) is by top cover body (5-1) and bolt (5-2)
Composition；The top cover body (5-1) is mounted on above drain bar (2), and outer barrel (1) and interior is fixed on by bolt (5-2) sealing
On bucket (3)；
It includes pore water pressure sensor, drain interface (7), sensor interface panel that the automatic liquid chemoprevention, which controls system,
(8), Acquisition Instrument, alarm and water pump；The pore water pressure sensor is by pore water pressure sensor probe (6-1), sensing
Device conducting wire (6-2) and sensor passage (6-3) composition；The pore water pressure sensor probe (6-1) is fixed on through-hole (1-2)
On, it is connect with sensor conductor (6-2)；The sensor conductor (6-2) is logical by the sensor being mounted on outer barrel (1) inner wall
Road (6-3) is drawn, and is connect with sensor interface panel (8)；The drain interface (7) and sensor interface panel (8) are close
Envelope is installed on drain bar top pressure closure (5)；The drain interface (7) is connect by drainpipe with water pump, the sensor
Interface panel (8) is connect by conducting wire with Acquisition Instrument；The Acquisition Instrument, alarm and water pump are sequentially connected, and Acquisition Instrument can lead to
It crosses pore water pressure sensor and reads and preserve automatically pore water pressure force data, the pore water that alarm can acquire Acquisition Instrument
Pressure data is read out, early warning and processing；Super quiet hole in the sea bed of Acquisition Instrument collected offshore type bucket base periphery
When gap water pressure is more than sea bed liquefaction early warning value, alarm alarms and starts pumping for water pump automatically, reduces offshore type barrel shape in time
Basal perimeter seabed soil Pore Pressure excludes sea bed liquefaction risk.
2. a kind of automation according to claim 1 prevents liquefied offshore type bucket base, it is characterised in that：It is described outer
Bucket (1) is steel drum；The interior bucket (3) is PVC barrels；The upper surface of the interior bucket (1) is flushed with outer barrel (3) upper surface；It is circumferential equal
Multiple through-holes (1-2) distribution for being distributed in said tub (1) bucket wall is arranged in the easy liquefaction determined according to sea bed geological mapping data
Soil layer region can be uniformly distributed or crisscross uniformly distributed in length and breadth；The horizontal annular steel plate that the cutting shoe (1-3) is arranged with its top
Slip casting in the cavity that (1-5) is constituted forms injecting cement paste (1-4), the dead weight for improving offshore type bucket base, and increases offshore
The stability of formula bucket base；The drain bar (2) is arranged in arcuation, and surface is equipped with loaded filter, the obstructed soil particle of water flowing；It is more
A drain bar (2) is sequentially connected end to end rear rounded, the outer surface side wall with said tub (1) and interior bucket (3) respectively
It fits closely；The split bolt (4) is sealed processing by rubber ring；The drain bar top pressure closure (6) and interior bucket (1)
Sealed connection can be realized by way of welding or breaking fluid sealant with outer barrel (3).
3. a kind of automation according to claim 1 prevents liquefied offshore type bucket base, it is characterised in that：The hole
Gap water pressure sensor genesis analysis is an installation group in a row through-hole (1-2), usually needs four installation groups, installs respectively
In on two orthogonal directions of outer barrel (1)；When offshore type bucket base is relatively large in diameter, suitably increase pore water pressure sensor
Installation group number；The test surfaces (permeable stone) and outer barrel (1) of the pore water pressure of the pore water pressure sensor probe (6-1)
Lateral wall it is tangent, for seabed soil.
4. a kind of automation according to claim 1 prevents liquefied offshore type bucket base, it is characterised in that：The row
Waterpipe jointing (7) and sensor interface panel (8) use mechanical seal interfacing, ensure drain interface (7) and sensor
Interface panel is fully sealed at (8), exhausted with external environment water, air bound；The drainpipe and conducting wire length in reserve are respectively according to row
Water plate top pressure closure (5) determines at a distance from water pump, Acquisition Instrument.
5. a kind of automation prevents the construction method of liquefied offshore type bucket base, which is characterized in that this method includes following
Step：
(1) in outer barrel (1) upper installing hole gap water pressure sensor monitoring group of offshore type bucket base main body：First pore water pressure
The pore water pressure test surfaces (permeable stone) and the lateral wall of outer barrel (1) of force snesor probe (6-1) are tangent, are fixedly installed in logical
On hole (1-2)；Pore water pressure sensor probe (6-1) is connect with sensor conductor (6-2), and sensor conductor (6-2) passes through
Sensor passage (6-3) on outer barrel (1) inner wall is drawn；Ecto-entad is by outer barrel main body (1-1), drain bar (2), interior
Bucket (3) is closely joined together by split bolt (4)；Sensor conductor (6-2) is connected to sensor interface panel (8)
Behind inside, drain bar top pressure closure (5) is placed in above drain bar (2), outer barrel (1) and interior bucket are fixed on by bolt (5-2)
(3) on；Drain interface (7) is connect with drainpipe, sensor interface panel (8) is connect with conducting wire；
(2) by barge by the offshore type bucket base main body being completed with liquefaction prevention system underwater portion integral hoisting
To the marine site installed, offshore type bucket base main body is slowly submerged in the seawater using loop wheel machine so that drain bar
(2) seawater is full of in drainage channel；Suction tube (9) is installed into offshore type bucket base main body, suction tube (9) is placed in offshore
Above the cutting shoe (1-3) of formula bucket base main body；Under offshore type bucket base main body and suction tube (9) are uniform under Gravitative Loads
It is heavy, after waiting for cutting shoe (1-3) completely into sea bed or riverbed, vacuumized from suction tube (9) top vent hole (9-1), suction tube
(9) in the soil body (11) of offshore type bucket base bottom part body sucking bucket, offshore type bucket base main body and suction tube (9) will
Uniformly sink；
(3) until offshore type bucket base main body is sunk down at designed elevation, stop to suction tube (9) top vent hole (9-
1) it vacuumizes；
(4) block stone (12) is uniformly thrown to the gap between offshore type bucket base main body and suction tube (9), and passes through suction tube
(9) top vent hole (9-1) slowly lifts by crane suction tube (9) upwards to suction tube (9) interior high-pressure gas injection, joint loop wheel machine；By suction
For cylinder (9) slowly in lifting process, block stone is uniformly thrown in the gap continued between offshore type bucket base main body and suction tube (9)
(12)；
(5) when suction tube (9) bottom surface and the surface layer of sea bed or riverbed are apart from certain altitude, stop to suction tube (9) interior high pressure
Gas injection, and slow release suction tube (9) interior air pressure；When being equal to atmospheric pressure to suction tube (9) interior air pressure, it is slow to continue through loop wheel machine
Lifting suction tube (9) upwards, and continue the gap between offshore type bucket base main body and suction tube (9) and uniformly throw block stone
(12)；After suction tube (9) completely lifting, it is spare to hang construction site；
(6) after waiting for offshore type bucket base main body construction, basic superstructure installation is carried out, and carry out liquefaction prevention system
Above water connection：Drainpipe, conducting wire are connect with water pump, Acquisition Instrument respectively, and successively by Acquisition Instrument, alarm and water pump
Connection.
6. a kind of automation according to claim 5 prevents the construction method of liquefied offshore type bucket base, feature
It is：In the step (2), the internal diameter of the suction tube (9) is more than the horizontal annular steel plate (1- being arranged above cutting shoe (1-3)
5) internal diameter；Suction tube (9) bottom and the junction horizontal annular steel plate (1-5) installation rubber ring (10), ensure suction tube (9) with
It is tightly connected between offshore type bucket base main body, prevents suction tube in sinking watching (9) leak gas leakage；The suction tube (9)
Volume be more than offshore type bucket base main body and sink down into the soil discharge quantity of designed elevation.
7. a kind of automation according to claim 5 prevents the construction method of liquefied offshore type bucket base, feature
It is：In the step (5), suction tube (9) bottom surface is with sea bed or riverbed surface layer distance a by suction tube (9) interior air pressure
Value P and suction tube (9) the interior soil body (11) are determined with suction tube (9) madial wall unit height frictional resistance f, suction float buoyancy F.Institute
It states in step (5), the amount of fill and filling height for throwing block stone (12) are set according to the rigidity and stability of offshore type bucket base
It counts to determine.
8. a kind of automation according to claim 5 prevents the construction method of liquefied offshore type bucket base, feature
It is：Suction tube (9) inner barrel wall smears mould oil, convenient for its sinking and removal, and ensure to sink and removal during
Air-tightness.
9. a kind of automation according to claim 5 prevents the construction method of liquefied offshore type bucket base, feature
It is：When basis of the offshore type bucket base as important building, structures or equipment, to improve the rigidity and stabilization on basis
Property, Grouting Pipe can be transferred along suction tube (9) outer barrel, noted between the soil body (11) and block stone (12) of suction tube (9) bottom
Slurry, to reinforce the soil body in offshore type bucket base.
10. a kind of automation according to claim 5 prevents the construction method of liquefied offshore type bucket base, feature
It is：When offshore type bucket base is applied to breakwater, the island wall of man-made island, harbour shore protection or cofferdam, by offshore type barrel shape base
Plinth main body (1-1) connects the up to water surface or more, while backfill or slip casting are to designed elevation into bucket, without performing base roof plate
(13)；When offshore type bucket base is applied to the underwater foundation of ocean engineering, base roof plate (13) should be performed under water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008469.8A CN108301435B (en) | 2018-01-04 | 2018-01-04 | A kind of automation prevents and treats liquefied offshore type bucket base and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008469.8A CN108301435B (en) | 2018-01-04 | 2018-01-04 | A kind of automation prevents and treats liquefied offshore type bucket base and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108301435A true CN108301435A (en) | 2018-07-20 |
| CN108301435B CN108301435B (en) | 2019-10-18 |
Family
ID=62868646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810008469.8A Active CN108301435B (en) | 2018-01-04 | 2018-01-04 | A kind of automation prevents and treats liquefied offshore type bucket base and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108301435B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952533A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater anti-slip bored pile foundation and construction method thereof |
| CN110952540A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater cast-in-situ bored pile steel casing installation device and method |
| CN111042120A (en) * | 2019-11-26 | 2020-04-21 | 浙江大学城市学院 | High-sensitivity anti-skid bored pile foundation for soft soil area and construction method of high-sensitivity anti-skid bored pile foundation |
| CN113502843A (en) * | 2021-09-10 | 2021-10-15 | 南通泰胜蓝岛海洋工程有限公司 | Liquefaction prevention method for offshore wind power conduit frame liquefaction prevention suction barrel device |
| CN116427457A (en) * | 2023-06-05 | 2023-07-14 | 中交一航局第一工程有限公司 | Large underwater steel cylinder foundation for offshore wind power and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612607B1 (en) * | 2005-12-27 | 2006-08-14 | 안영기 | Breaking prevention equipment and breaking perception sensor of well box basis for bridge |
| CN202090333U (en) * | 2011-05-05 | 2011-12-28 | 浙江海洋学院 | Sand liquefaction high frequency drainage device |
| KR20150052622A (en) * | 2013-11-06 | 2015-05-14 | 대우조선해양 주식회사 | Suction Pipe |
| CN107268667A (en) * | 2017-07-05 | 2017-10-20 | 东南大学 | A kind of suction caisson foundation of sidewall band sizing device |
-
2018
- 2018-01-04 CN CN201810008469.8A patent/CN108301435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612607B1 (en) * | 2005-12-27 | 2006-08-14 | 안영기 | Breaking prevention equipment and breaking perception sensor of well box basis for bridge |
| CN202090333U (en) * | 2011-05-05 | 2011-12-28 | 浙江海洋学院 | Sand liquefaction high frequency drainage device |
| KR20150052622A (en) * | 2013-11-06 | 2015-05-14 | 대우조선해양 주식회사 | Suction Pipe |
| CN107268667A (en) * | 2017-07-05 | 2017-10-20 | 东南大学 | A kind of suction caisson foundation of sidewall band sizing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952533A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater anti-slip bored pile foundation and construction method thereof |
| CN110952540A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater cast-in-situ bored pile steel casing installation device and method |
| CN111042120A (en) * | 2019-11-26 | 2020-04-21 | 浙江大学城市学院 | High-sensitivity anti-skid bored pile foundation for soft soil area and construction method of high-sensitivity anti-skid bored pile foundation |
| CN113502843A (en) * | 2021-09-10 | 2021-10-15 | 南通泰胜蓝岛海洋工程有限公司 | Liquefaction prevention method for offshore wind power conduit frame liquefaction prevention suction barrel device |
| CN116427457A (en) * | 2023-06-05 | 2023-07-14 | 中交一航局第一工程有限公司 | Large underwater steel cylinder foundation for offshore wind power and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108301435B (en) | 2019-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108301435B (en) | A kind of automation prevents and treats liquefied offshore type bucket base and its construction method | |
| CN108316334B (en) | A kind of liquefied double-walled suction tube basis of automation prevention and treatment | |
| CN103924585B (en) | The construction method of wind-powered electricity generation socketed pile | |
| CN105951826A (en) | Suction ground anchor device in tubular pile and water pressure injection method thereof | |
| CN104762982B (en) | The construction method that a kind of rich water red sandstone geology level of ground water controls | |
| CN205917719U (en) | Marine anemometer tower of multi -bucket negative -pressure barrel formula | |
| CN111042120A (en) | High-sensitivity anti-skid bored pile foundation for soft soil area and construction method of high-sensitivity anti-skid bored pile foundation | |
| CN110952533A (en) | Underwater anti-slip bored pile foundation and construction method thereof | |
| CN201908323U (en) | Water drainage and pressure relief device of underground structure baseboard | |
| CN108625390A (en) | The construction process and the more leg jacket foundation structures of pile foundation gravity type offshore wind turbine height stake of offshore wind turbine foundation | |
| CN102888847A (en) | Construction method free from lowering water level for local deep foundation pit of elevator shaft | |
| CN106223355A (en) | A kind of high bearing platform supported on piles in deep water Hold Hoop method has device and the construction method of end steel jacket box | |
| CN108222057B (en) | A kind of digging-free construction method of offshore type bucket base | |
| CN105756081B (en) | Self-locking head prestress wire round platform concrete cylinder offshore wind turbine foundation and its construction method | |
| CN205116159U (en) | Supporting rig dry process pore -forming bored concrete pile that digs soon of back slip casting | |
| CN104278686A (en) | Spatial drainage and anti-seepage system for high-water-content dredged sediment yard cofferdam | |
| US11596114B2 (en) | Floating island construction method for overall transplantation of sandy soil plants | |
| CN112252309B (en) | Anti-slide pile for preventing and treating underwater soft soil slope landslide caused by earthquake and construction method thereof | |
| CN212835639U (en) | Pump station water taking head form convenient for underwater construction | |
| CN208563362U (en) | The more leg jacket foundation structures of pile foundation gravity type offshore wind turbine height stake | |
| CN208455485U (en) | Combined type single wall steel bushing case apparatus | |
| CN108797348A (en) | Combined type single wall steel bushing case apparatus and its construction method | |
| CN111287205A (en) | Deep multi-stage dynamic foundation pit dewatering system and dewatering method thereof | |
| CN117166529B (en) | GFRP suction barrel foundation penetration method | |
| CN210263057U (en) | A stagnant water slip casting device for deep basal pit decompression tube well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |