Content of the invention
For the man-made island being formed by adding backfill filler in the cofferdam of breakwater formation in lattice steel sheet pile large cylinder
In work progress, face " being all restricted up and down " construction condition (i.e. construction area limit for height, the depth of water shallow,
Poor, the marine environmental requirement of matter condition is high) when it is difficult to the problem that is timely completed within the tighter duration, the present invention provides a kind of lattice
Shaped steel plate pile large cylinder nominative 1/4 land-based area is pre-splicing, the lattice steel sheet pile large cylinder nominative construction technology of free combat waterborne.This technique energy
Enough under the construction condition of above-mentioned " being all restricted up and down ", land-based area shape completed with very fast, relatively low construction cost
Become the construction of the lattice steel sheet pile embankment in engineering.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of lattice steel sheet pile large cylinder nominative 1/4 land-based area is pre-splicing, free combat method waterborne, and methods described includes walking as follows
(1) land-based area is pre-splicing
Carry out steel sheet pile in the pre-splicing place in inland first and close up stake and be processed, then assembled in advance main on cargo ship
Panel stake 1/4 cylinder, obtains pre-assembled of corresponding 1/4 round steel sheet pile, and the stake of closing up processing is positioned on cargo ship；
(2) water transportation
Hauled being mounted with pre-assembled of 1/4 round steel sheet pile to job site with the cargo ship closing up stake using towboat；
(3) live spelling closes up
(31) the construction setting corresponding tooling bracket of dative shaped steel plate pile large cylinder at the scene, and by four group of 1/4 round steel
Pre-assembled of sheet pile is transported to job site；
(32) it is lifted into corresponding for pre-assembled of four group of 1/4 round steel sheet pile on tooling bracket in the one side of tooling bracket,
Make pre-assembled of four group of 1/4 round steel sheet pile that circle is cooperatively formed on tooling bracket；
(33) overall pre-assembled of the four group of 1/4 round steel sheet pile that put down is to close to mud face；
(34) 4 are assigned to close up stake between pre-assembled of four group of 1/4 round steel sheet pile, by 1/4 round plate of four groups of independences
Pre-assembled of stake is assembled into complete lattice steel sheet pile large cylinder；
(35) last integral hoisting lattice steel sheet pile large cylinder；
(4) packet shake heavy
Using single vibration hammer plaid matching shaped steel plate pile large cylinder nominative carry out packet shake heavy.
In the preferred embodiment of the present invention, in described step (1), specifically include following steps：
(11) required steel sheet pile is transported to pre-splicing place；
(12) steel sheet pile is transported to machining area；
(13) steel sheet pile is classified and is accordingly processed according to steel sheet pile roles different during assembly：
Close up stake processing, open up hole for hoist, welding T-slot；
(14) steel sheet pile suspension hook is installed to the steel sheet pile carrying out opening up hole for hoist with welding T-slot processing；
(15) obtain in lifting step (14) successively steel sheet pile to cargo ship assembled position accordingly, complete nominative sheet pile
The assembly of 1/4 cylinder, obtains pre-assembled of corresponding 1/4 round steel sheet pile.
Further, described pre-splicing place is included for material stockyard, sheet pile processing, hoisting operation place land-based area consolidation shed
Ground and the cargo ship as waters assembly place；The a length of 200m of described land-based area assembly place water front, depth width is 60m, total face
Amass as 12000m2, arrangement steel sheet pile processing place, Material Staging Area, crawler crane travel region, and assembled tower crane region.
Further, described cargo ship is deck bearing goods, and its deck is installed four transport supports, described four fortune
Defeated support is used for installing 8 1/4 round nominative steel sheet piles, and is in the longitudinally asymmetric loading of two sides of a ship；Described transport support adopts column steel
Truss structure, each support totally 7 root post, in the horizontal layout of transport support：One root post at center, remaining six roots of sensation column
In every three one group of symmetrical middle standing pillars both sides, and three root posts of both sides all by 1/4 round steel sheet pile radian arrange；
Transport support sets 6 layers of platform up and down altogether, and column bottom is welded to connect with ship board, and landing beam and platform truss are all and column
It is welded to connect, each platform both sides is the Curved beam supporting 1/4 round steel sheet pile, middle is steel pipe truss, outside top layer Curved beam
If steel sheet pile is linked up with.
Further, in described step (15) in pre-assembled of assembled nominative sheet pile 1/4 round steel sheet pile, will using hook
Steel sheet pile hangs on transport support, is disposed with T-shaped hook, steel sheet pile is every 6 in relevant position at upper and lower the two of transport support
Welding T-slot, for locking steel sheet pile with transport support；After the completion of the assembly of steel sheet pile pre-splicing load, in pre-splicing load both sides
It is disposed with clamp device every 15m from top to bottom, using fastening bolt, pre-splicing load is connected with transport support it is ensured that preassembling
Piece will not rock in transit.
Further, splice in splicing and during first steel sheet pile hang steel sheet pile to fortune transport support head piece
On hook, and it is plugged benchmark when T-shaped pin splices as bottom sheet steel sheet pile；Using a guiding after the completion of first steel sheet pile splicing
Device, provides guiding for follow-up splicing steel sheet pile, splices remaining steel sheet pile successively.
Further, carry out in described step (2) haul cargo ship when, using towing with tie up drag combination by the way of transport；
Described cargo ship is dumb barge, is hauled as navigating power ship using tugboat；During haul, adopt a main tugboat with routine side
Formula towing or tie up drags, and is connected using special towing cable between main tugboat and cargo ship；Article one, auxiliary tug is in cargo ship side afterbody
Tie up in a usual manner and drag, the special towing cable of auxiliary tug bow, stern is tied up on cargo ship bollard, auxiliary tug is simultaneous to play convoy effect.
Further, sink at the scene in described step (31) and set support steel pile tube and form tooling bracket basis, then by frock
On the basis of support is lifted into tooling bracket；Described tooling bracket basis is supported using 9 steel-pipe piles, and wherein 8 are evenly arranged
On circle, 1 is arranged in round center, and the stake top of all support steel pile tubes is in same level, and each supporting steel pipe
It is provided with bindiny mechanism in the stake top of stake.
Further, described tooling bracket includes：
Upper support moulding bed, described upper support moulding bed is used for supporting pre-assembled of 1/4 round steel sheet pile；
Lowering or hoisting gear, described lowering or hoisting gear is placed on upper support moulding bed, drives pre-assembled of 1/4 round steel sheet pile upper
Lifting on portion's support jig；
Rotary apparatuss, described rotary apparatuss are placed on upper support moulding bed, drive pre-assembled of 1/4 round steel sheet pile upper
Rotation on portion's support jig；
Air bag dilating device, described air bag dilating device is placed on upper support moulding bed, in the assembled conjunction of steel sheet pile
After holding together, compensate the preset clearance between tooling bracket and steel sheet pile, make support jig effective support steel sheet pile.
Further, adopt horizontal hanging arm crane ship inner side burst lifting 1/4 circle at the construction field (site) in described step (32)
Pre-assembled of steel sheet pile, crane ship pass through the radian arc hanging beam consistent with 1/4 round steel sheet pile assembly tab axle center radian lift by crane and
Pre-assembled of 1/4 round steel sheet pile is installed, and by sling 1/4 round steel sheet pile pre-assembled be transformed into the hook on tooling bracket
Further, directly it is connected using shackle plate between described arc hanging beam and lifting ship's tackle.
Further, in described step (32) during pre-assembled of four group of 1/4 round steel sheet pile of lifting, in first group of 1/4 round steel
After pre-assembled lifting of sheet pile is in place, tooling bracket rotates 180 °；It is pre-assembled that homonymy lifts second group of 1/4 round steel sheet pile
Piece, lift in place after together with 90 ° of pre-assembled integral-rotation of first group of 1/4 round steel sheet pile；Then homonymy lifts the 3rd group 1/4
Pre-assembled of round steel sheet pile, together with first group and pre-assembled integral-rotation of second group of 1/4 round steel sheet pile after lifting is in place
180°；Pre-assembled of the 4th group of 1/4 round steel sheet pile of finally homonymy lifting.
Further, in described step (34) every close up steel sheet pile and be divided into 2～4 sections to assign, close up stake using connecting steel
Crab bolt connects.
Further, in described step (4) single vibration hammer with 6 steel sheet piles in lattice steel sheet pile large cylinder nominative for one group
To carry out shaking heavy simultaneously.
Further, when described packet shakes heavy, using two 250t crane ships joining a vibration hammer respectively, in lattice steel
When carrying out inside and outside sheet pile large cylinder shaking heavy.
Further, described two 250t crane ships are symmetrical, and it is heavy symmetrically to be shaken, and heavy depth of shaking by several times.
Further, described heavy specific operation process of shaking is as follows：
First, by two 250t crane ships join vibration hammer symmetrical carry out inside and outside cylinder layered circulation shake heavy：
Steel sheet pile in plaid matching shaped steel plate pile large cylinder nominative is grouped first, and numbers, every group of 5～6 piles；Then every ship is adopted
Shaken heavy every group of steel sheet pile with a vibration hammer joining 6 fixtures, every group of stake is once shaken heavy depth about 1.5～2m, then it is heavy to shake simultaneously
Next organizes steel sheet pile, until all steel sheet piles all sinking 1.5～2m in lattice steel sheet pile large cylinder nominative, then reversely follows again
The ring heavy every group of steel sheet pile that shake makes all steel sheet piles in lattice steel sheet pile large cylinder nominative synchronously sink 1.5～2m again, continues layering
It is heavy that circulation is shaken, until the upper mounting plate of tooling bracket is close to middle platform；
Then, lifted tooling bracket upper mounting plate, and carry out layered circulation shake heavy, upper mounting plate lifting after continue packet, point
Layer circulates the heavy steel sheet pile that shakes, until steel sheet pile top is close to middle platform, each submergence depth 1～1.5m；
Finally, lift the middle platform of tooling bracket, and carry out layered circulation shake heavy, continue after the lifting of middle platform packet, point
Layer circulates the heavy steel sheet pile that shakes, until steel sheet pile design top mark is high, each submergence depth 0.5～1m.
Further, shake heavy before be punched out using steel-pipe pile in cylinder steel sheet pile position in advance.
Further, when described packet shakes heavy, steel hoop is set outside lattice steel sheet pile large cylinder.
The technique that the present invention provides has the advantage that：
1) lattice steel sheet pile 1/4 large cylinder pre-splicing free combat technique is it is adaptable to all land-based areas form the lattice steel plate in engineering
Stake embankment construction, is particularly suited for the inaccessiable region of large-scale crane ship, Intertidal zone as shallower in the depth of water, the boat of near airports
Empty height limiting zone.Land pre-splicing do not restricted by field condition, be particularly well-suited to the very short off-lying sea of live year effective operation time
2) the land pre-splicing time saving on-site consolidation, and do not restricted by live natural conditions, it is particularly well-suited to existing
The very short off-lying sea region of field year effective operation time.Nominative adopts 1/4 cylinder steel sheet pile scene spelling, greatly reduces live work
Measure, scene only need to hang 4 1/4 pre- kits, in splicing, 4 are closed up stake.Each cylinder reduces about 8 days.
3) " land pre-splicing, the waterborne combination free combat of nominative 1/4 cylinder steel sheet pile " technique does not need more than 2000t large-tonnage to rise
Weight ship, construction cost is relatively small.
4) utilize cargo ship directly as a 1/4 cylinder steel sheet pile assembly place part, decrease building block and fall the ring refuted
Section, strengthens the stability during ship carried and transported, and saves assembled place land-based area area.Both saved cost, increased again
Add Transport Safety.
5) using " cradle integration " technique it is ensured that the stablizing of ship and goods during transport.Using " steel sheet pile hangs anchor phase
In conjunction with " mode efficiently solve the stable problem of the pre-splicing load of transportation Steel Sheet Pile.
6) special tooling bracket is difficult to be used in turn under the conditions of highly designing and solving the problems, such as live limit for height；Structure design
Solve the problems, such as typhoon period frock stable problem, ultra-long pile integral hanging；The elevating function that frock possesses solves ultra-long pile
Lifting decentralization problem after assembly, profundal zone are dragged water lacing film problem, are increased and close up a single-unit length and improve work efficiency problem, sheet pile
When shaking heavy, frock hinders vibration hammer descent path problem；The spinfunction that frock possesses solves lift-on and lift-off ship oceangoing ship in elongated zones
Can not circle round that displacement lifting problem, small-sized crane ship can not carry out the overall problem closed up, major-minor lattice connect stake orientation problem,
Close up the convenient problem of operation；The problems such as what frock possessed dilates inclination and the Deformation control that support function solves ultra-long pile.
7) close up stake and adopt special connecting plate, bolt connection technology, solve when height limiting zone is to fore shaft splicing operation
A highly constrained difficult problem.
8) special floating crane specially manufacturing and designing solves the problems, such as lift heavy, the lifting of major diameter tooling bracket under the conditions of limit for height
Shi Qichong brachium problem, phytal zone drauht problem, major diameter tooling bracket lifting when be accurately positioned problem, by special fortune
On defeated ship steadily a difficult problem for lifting 1/4 pre- kit, the difficult problem 1/4 pre- kit being steadily arranged on tooling bracket, the wave is high, and stream is anxious
Rig a ship stability problem under state.
9) the Special arc hanging beam specially manufacturing and designing and special transition hanging bracket efficiently solve the lifting of arc 1/4 pre- kit
When stability stable, reduce lifting steel wire rope height and adapt to the problem of live limit for height.
In order that technological means, creation characteristic, reached purpose and effect that the present invention realizes are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Man-made island steel sheet pile grid island wall described in using background section for this example as corresponding construction work, with this
To illustrate pre-splicing, the free combat method waterborne whole implementation process of lattice steel sheet pile large cylinder nominative 1/4 land-based area.
In this example, the enforcement of this engineering has following condition：
1) construction area limit for height condition
Whole construction area is respectively positioned on airport aviation height-limit area, and lattice steel sheet pile large cylinder job site limit for height is in+30mPD
Between～+60mPD, construction equipment selects to be extremely restricted.Existing equipment cannot normally come into operation or service efficiency is extremely low,
Newly-built must could be suitable for this engineering construction needs with transformation equipment component, and subregion steel sheet pile also need to be in limited aviation
Limit for height is relaxed in the phase and is implemented.
2) depth condition
This engineering construction region mud face absolute altitude is gradually lowered from south to north, nearly half ENGINEERING POINT absolute altitude -2.8mPD～-
11mPD, blotter fills rear absolute altitude in -1.8mPD～-2mPD, mean sea level 1.2mPD, ebb tide mean low-water
0.3mPD.Because the depth of water is shallower, construction ship needs operation by tide, and ships that transport cannot reach construction point.
3) stormy waves condition
During this engineering tooling bracket system computing, maximum water depth value is 11m, extreme wave height 2.2m, wave period 5.5s,
Maximum wind velocity 44m/s, tooling bracket can keep stable under typhoon situation.But in order to ensure safety, this 1/4 large cylinder scene
When splicing and overall decentralization, need to select when calm.
4) geological conditions
Bottom silt thickness about 15m-25m, designing pile length 23.6m-39.1m, this project large cylinder is that embankment is permanent simultaneously
A part for property structure, major and minor lattice stake is long identical.Due to limit for height, long stake cannot be disposably in place, needs live pile extension.
5) construction area scope restrictive condition
The complete off-shore operation of this engineering, dirty curtain, great circle tube construction position are blocked in body periphery long-term setting in island during site operation
In long and narrow region, beam overall is limited to 200m, is started at by extra large center line of wall, side 150m, opposite side 50m, and actual maximum is applied
Work clear distance about 120m；Operation ship is many simultaneously, and cross interference is larger.
6) constraints of cylinder deadweight
This engineering single nominative steel sheet pile gross weight is typically in 450t～560t.Under the conditions of aviation limit for height, there is no at present
Suitable crane ship once completes a nominative integral hoisting and sinking.
7) duration constraints
Required according to relevant, in addition to 5 lattice steel sheet pile large cylinders of reserved opening gate segment, remaining 129 lattice steel sheet pile
Large cylinder sinks and sets work and need to complete in 420 days after commencement of works, completes steel sheet pile in 14th month after commencement of works and sink to set
Work.Heavy setting due to lattice steel sheet pile large cylinder could need to be implemented after the completion of geotextiles, blotter and broken stone pile, and greatly
Part steel sheet pile construction ship need to be implemented to change, build, and steel sheet pile sinks and sets the practice of construction duration about at 8 months about.Due to this
The long average 37.1m of engineering nominative steel sheet pile stake, at the scene under conditions of aviation limit for height, effective operation time is too short, according to existing
Field dissipates spells, and work efficiency is too low, and 154 steel sheet piles of each large cylinder are assembled to be taken oversize it is difficult to satisfaction removes mouth 129 lattice steel outdoors
Sheet pile large cylinder goes into operation the requirement completing in latter 420 days it is therefore necessary to select a kind of pre-splicing technique, reduces the field operation time
In sum, restricted by surrounding airport aviation limit for height, local engineering water depth is shallower and periphery blocks dirty curtain
The impact of curtain, this engineering lattice steel sheet pile construction technique and construction equipment are all very limited, and can only select specific technique
Implement steel sheet pile construction with equipment.Existing large-tonnage crane ship height does not adapt to the requirement of live limit for height it is also difficult to adapt to
Depth condition, so on-site hoisting part must be restricted in height, weight.Accordingly, this example adopts lattice steel sheet pile great circle
Cylinder nominative 1/4 land-based area is pre-splicing, the construction technology of free combat waterborne.The main of this technique passes through in inland assembled nominative sheet pile 1/ in advance
4 cylinders, obtain corresponding 1/4 round steel sheet pile assembly tab；Again by assembled 1/4 good round steel sheet pile assembly tab and closing up of processing
Stake is transported to job site；Finally at the construction field (site), anchor inside the wall of island by special floating crane, 4 1/4 round steel of unilateral lifting
Sheet pile assembly tab, Zai Jiang island wall outside plate stake assembly tab rotates in place, thus the steel sheet pile completing a lattice body is overall respectively
Assembled；After the completion of the assembly of one lattice body steel sheet pile, using vibration hammer progressively, layering shakes and is sink to design altitude.This technique is big by four
Processing step forms：Land-based area is pre-splicing, water transportation, live spelling close up, be grouped and shake heavy, and each step all has independent technique spy
For the clear work progress that this example is described, below by the preparation to some equipments being related in work progress
It is specifically described.
The pre-splicing place of land-based area and the selection of harbour
The pre-splicing place of 1/4 large cylinder must possess following condition：
1) possess the condition falling to refuting out fortune, will have more than 4000 tonnes of harbour；
2) possess the area of more than 10000m2, for placing of material, have bad luck, consolidation service；
3) possesses the operation area that can carry crane gear；
4) possess and conveniently transport the Channel Condition waterborne reached the spot.Through determining Dongguan, Guangdong Humen trans-container than choosing
No. 5 berths of harbour are as lattice steel sheet pile nominative 1/4 circle and secondary lattice full wafer assembly place.
By the way of the combination of land and water, land-based area is material stockyard, sheet pile is processed, hoisting operation place in assembled place；Waters
It is by the use of cargo ship as assembled place.
Referring to Fig. 3, assembled place 200, by the way of the combination of land and water, includes the assembled place 201 of land-based area and waters consolidation shed
Ground 202, wherein land-based area assembly place is material stockyard, sheet pile is processed, hoisting operation place；Waters is by the use of cargo ship as spelling
The a length of 200m of land-based area assembly place 201 water front, depth width is 60m, and the gross area is 12000m2, arrange steel sheet pile
Processing place, Material Staging Area, crawler crane travel region, and assembled tower crane region.All full paving interlocking block, crawler belt in assembled place
Hang travel region place need to be protected, protection is using the steel plate of+1 layer of 18mm plywood+δ 10mm of 1 layer of geotextiles.Before harbour
Along arrangement tower crane region, there are four swing arm walking cranes, tower crane adopts A80 track, the long 200m of track, and track foundation adopts 1m
The steel subgrade case of × 6m, laying 100mm thickness blotter under subgrade case.Steel sheet pile processing and Material Staging Area adopt 2 [30 channel-section steels
201a is as base plinth, channel-section steel interval 2.5m arrangement (referring to Figure 16).
The preparation of Ship for Transporting Module
Using cargo ship, directly as 1/4 cylinder steel sheet pile waters assembly place, decrease building block and fall the link refuted,
Strengthen the stability during ship carried and transported, and save assembled place land-based area area.Both saved cost, increased again
1/4 large cylinder pre- kit transport ship on water must is fulfilled for following condition：1) possess and can carry 12000 tons heavy cargoes
The ability of thing；2) classification society's certification must be obtained；3) it must is fulfilled for constant inclination stability requirement；4) related bridge in transportation route can be met
The head room of beam requires.Through ratio choosing, nominative cargo ship employs a 12000t level, a 18000t level barge with deck.
Ship for Transporting Module adopts ship, frame integrated design, arranges special transport support, transport in Ship for Transporting Module
Frame is connected with ship board using electric welding technique, forms ship entirety, and the pre-splicing piece installing of 1/4 large cylinder is bearing goods.
The high 37.2m of transport support, has 6 layers of platform, 7 root posts of support are directly welded on main deck, make support and ship
Body is integrated.
The installation of transport support
1) overall arrangement
4 groups of transport supports are disposed with nominative cargo ship, the 8 1/4 pre-splicing loads of circle of peace can be hung, scene 2 can be met
The construction of lattice nominative, secondary lattice cargo ship is 4 groups of transport supports, can hang 8 full wafers of peace, can meet live 4 groups secondary lattice
2) transport support configuration
Referring to Fig. 4, nominative cargo ship 202b is deck bearing goods：On the 202b1 of deck, haul distance installs four transport supports
202a, each transport support 202a is connected with ship board 202b1 using electric welding technique.Install on four transport supports
(each 1/4 circle weighs about 150t, span 22m, high 23.6～37.1m to 8 1/4 round nominative steel sheet piles, and totally eight, maximum is total
Weight 1200t), the longitudinally asymmetric loading of two sides of a ship.
Referring to Fig. 5, the high 37.2m of each transport support 202a, have 6 layers of platform, weigh about 180t, each transport support passes through
7 root posts are directly welded on main deck, so that support is integrated with hull.
Whole transport support adopts column steel truss structure.Each support totally 7 root post, in the horizontal layout of transport support
On：The both sides of one root post every three one group of symmetrical middle standing pillars in center, remaining six roots of sensation column, and three of both sides
Column all arranges (concentric circular) by the radian of 1/4 round steel sheet pile.Transport support sets 6 layers of platform up and down altogether.Column bottom and transport
Boat deck is welded to connect, and landing beam and platform truss are all welded to connect with column.Each platform both sides is to support 1/4 round steel sheet pile
Curved beam, middle is steel pipe truss, sets steel sheet pile hook outside top layer Curved beam, for steel sheet pile mounting when assembled；Top
Portion need to preset the arc hanging beam of lifting, for on-site hoisting conversion；It is disposed with T-shaped at upper and lower the two of transport support simultaneously
Each support top layer Curved beam top sets can be hung as special boatswain chair using set square with 90 ° of T-shaped hooks, steel sheet pile
Dress, after first steel sheet pile lifting, set square directly rests on the T-shaped hook of arc back, and is plugged T-shaped pin as bottom sheet steel
Benchmark during sheet pile splicing.Lift by crane next root steel sheet pile, in the lock of previous sheet pile of insertion, and be suspended on transport support top
On Curved beam hook, it is sequentially completed the assembly of nominative sheet pile 1/4 cylinder, obtains corresponding 1/4 round steel sheet pile assembly tab.So exist
When steel sheet pile is assembled, using hook, steel sheet pile is hung on pre-splicing support, at upper and lower the two of pre-splicing support, is disposed with T-shaped hook,
Steel sheet pile welds T-slot every 6 in relevant position, for locking steel sheet pile with pre-splicing support.The pre-splicing load of steel sheet pile is spelled
After the completion of dress, be disposed with clamp device every 15m from top to bottom in pre-splicing load both sides, using fastening bolt by pre-splicing load with
Pre-splicing support connects it is ensured that pre-splicing load will not rock in transit.
The preparation of tooling bracket
1/4 large cylinder scene splicing is carried out on cylinder position special " tooling bracket ".When being somebody's turn to do " tooling bracket " design, comprehensive
Consider the factors such as minimum height limiting zone limit for height, sea bed face absolute altitude, steel plate pile length, working water level and preset clearance.According to scheme
Requirement, " tooling bracket " need to have supporting steel sheet pile weight, revolution is assembled, unloading of sinking, dilate the functions such as support.For this
" tooling bracket " mainly comprises the following steps (referring to Fig. 6)：
1) foundation support stake
According to geological conditions, bearing requirements, various operating mode and water level, meteorological condition etc., tooling bracket basis adopts 9 steel
Pile tube supports.Referring to Fig. 7, it show support steel pile tube site plan, and wherein 8 support steel pile tubes 21 are evenly arranged in
On circle, 1 support steel pile tube 21 is arranged in round center.
Every lattice body steel sheet pile shakes after sinking and all pulls out；And the mechanism such as every support steel pile tube design of pile top adpting flange.
2) upper support jig structure
" tooling bracket " upper support moulding bed is made up of (referring to Fig. 8 extremely 9 support posts and 3 layers of horizontal frame platform etc.
Figure 10), top and middle part setting fixed connection structure.Upper support moulding bed all can meet structural strength, just under various operating modes
Degree and stability in the large require.
Wherein, " tooling bracket " upper support moulding bed is provided with 8 periphery steel pipe posts and 1 middle standing pillar supports, with top
Portion's structure, the steel pipe of bottom platform structure, between girder steel rigid attachment, and liftable upper mounting plate and middle platform pass through hinged seat and
Steel roller thereon and retaining mechanism are hinged.Flange in the bottom passes through gusset and column rigid attachment with column, and flange is machined with
Arc gain, passes through screw-thread steel bolt connection with 9, seabed piling bar.Middle standing pillar is provided with cat ladder and supplies operator to put down towards each layer
3 layers of horizontal frame platform include bottom platform, middle platform and upper mounting plate
Bottom platform be winch fix work platformses, steel sheep pile support and with lower support stake connecting platform, using truss
Structure, is connected with 9 seabed piling bars by base, and 4 hauling winches are placed on this platform.
Two-layer platform (middle platform) is to maintain device and the lifting platform of steel sheet pile stability.Middle platform is by annular collar tie beam
(oscilaltion) is formed with steel pipe truss, and middle platform unpowered mechanical, by 9 hinged seats and each hinged seat each 6 up and down
Guide roller can achieve by upper mounting plate power and moves up and down.Taper casing and voussoir are set on hinged seat for during steel sheet pile suspension
Eliminate column gap, stable framework, hinged seat is simultaneously provided with retaining mechanism (consistent with upper mounting plate).
Upper mounting plate
Three layers of platform (upper mounting plate) be hang for steel sheet pile and revolution lifting platform, upper mounting plate by annular box beam,
The structure composition such as walking dolly and fringe truss, middle part truss, hinged seat, retaining mechanism.
3) lowering or hoisting gear of " tooling bracket "
" tooling bracket " lowering or hoisting gear is used for platform and upper mounting plate lifting in driving, is mainly associated electronic by 4 double-ropes
Winch and leading block 23, and movable and fixed pulley group 24 forms, 4 winches 22 are arranged on underlying platform (referring to Fig. 6).
Steel sheet pile is carried by upper mounting plate collar tie beam and rotary machinery, by 4 sets of this systems and 8 being located on upper mounting plate collar tie beam
Suspension centre, with 9 root posts as lead, realizes the lifting of steel sheet pile.
4) rotary apparatuss of " tooling bracket "
The rotary apparatuss of " tooling bracket " are used for platform and upper mounting plate rotation in driving.Mainly it is made up of following 3 parts：1)
Upper mounting plate rotation collar tie beam (joining roller), 2) planet gear drives motor, 3) part such as the T-shaped hook of middle level platform servo rotary forms.
5) the air bag dilating device of " tooling bracket "
Close up for ease of steel sheet pile and be assembled into integral lattice, each layer platform girder steel radius of tooling bracket is respectively less than principal radii.
Steel sheet pile assembly is to compensate this preset clearance and can make moulding bed effective support steel sheet pile after closing up, and sets on upper mounting plate and middle platform
Put air bag and dilate system.This system is mainly by air compressor, air accumulator, Stress control and induction system and flatulence Capsules group
Become, simultaneously configure vacuum breathing apparatus, do not require the use of dilate when, air bag can be contracted in girder steel upper groove.
" special floating crane " prepares
" tooling bracket " upper support moulding bed is installed, 1/4 circle assembly tab burst lifting is real by one " special floating crane "
Due to being limited by aviation limit for height, existing sea hoisting equipment all can not meet the lattice steel sheet pile integral hoisting of this engineering
Require.For this reason, this example provide one to have certain lift heavy ability and larger outboard hang away from horizontal hanging arm special floating crane.Root
According to aviation limit for height, sea bed mud face elevation, 1/4 circle assembly tab burst hoisting demand, " tooling bracket " superstructure TBW
The factor such as amount and the requirement of hull stability, makees special floating crane lash ship using 6000t level deck barge.
In most periods (or in limit for height open period) and specific time period, above-mentioned 2 special floating cranes can meet this
Engineering Overall construction demand.
The preparation of steel sheet pile arc hanging beam
1/4 round steel sheet pile assembly tab is lifted by crane using Special arc hanging beam 25 and is installed, arc hanging beam 25 radian and 1/4 round steel
Sheet pile assembly tab axle center radian is consistent (referring to Figure 11).
Effectively hang height for increasing crane ship as far as possible, directly using hanging between steel sheet pile arc hanging beam 25 and lifting ship's tackle
Otic placode 26 connects.
Referring to Figure 12, it show the structural representation that arc hanging beam 25 lifts by crane steel sheet pile.As figure shows, lifted by crane
During steel sheet pile, arc hanging beam 25 connects triangle boatswain chair 28 by way of hoisting wirerope 27 is with shackle connection, then is hung by triangle
Plate 28 connects to steel sheet pile.
During this arc hanging beam 25 lifting steel sheet pile, joined by the load-bearing hook 29 of triangle boatswain chair 28 and support upper mounting plate hanging beam
Put, realize arc hanging beam 25 change to support upper mounting plate hanging beam load-bearing hook 29 on conversion (referring to Figure 13), thus realize by
The pre-splicing piece installing of 1/4 large cylinder is lifted in tooling bracket system.
After completing above-mentioned correlation technique and preparing, determine related construction process, whole construction process is referring to Figure 14.
The first step, nominative 1/4 land-based area is pre-splicing
Referring to Figure 15, it show this example and carries out the pre-splicing process chart of nominative 1/4 land-based area.As seen from the figure, entirely
Pre-splicing process is as follows：
1.1st, using cargo ship, steel sheet pile is transported to the harbour in land-based area assembly place.
1.2nd, steel sheet pile is unloaded and be transported to land-based area assembly place Material Staging Area stored up.
Due to engineering steel plate pile length 23.6m～37.1m in this example, because steel sheet pile pile body is longer, for preventing
Steel sheet pile produces permanent deformation in stacking and hoisting process, it is stored up and does following requirement：
Chock cantilevered out apart from a≤1.5m
Middle chock is apart from b≤4.0m
Stagger between bundle apart from c ＞ 0.15m
Referring to Figure 16, for this reason, adopting 2 [the channel-section steel 201a of firstname.lastname@example.org in steel sheet pile machining area and Material Staging Area in this example
As steel sheet pile bottom bracket, and it is spaced 2.5m arrangement, steel sheet pile monolayer stacks 3 a bundles, single 6 bundle ranked and stacked piles, highly exists
1.5m, guardrail is installed in both sides, is separated using chock 201b between layers, below 2 layers of chock adopt 4 × 10 × 5cm wood
Side interval 2.5m arrangement, upper strata chock adopts 2 × 10 × 5cm flitch interval 2.5m arrangement, and levels sleeper need to be at a center
Also on steel sheet pile bottom bracket and heap puts the top setting waterproof cloth 201c of steel sheet pile well to this example.
1.3rd, steel sheet pile is transported to machining area
When steel sheet pile is transported inside, carry out lifting by crane in steel sheet pile field and turning using hanging beam using 150t crawler crane
Fortune, hanging beam design considers according to 3 steel sheet pile a bundle weight configuration.
1.4th, steel sheet pile processing
In machining area site operation technical staff according to the position of the lattice steel sheet pile lattice body of site operation, determine 1/4
The position of each steel sheet pile in round steel sheet pile assembly tab, makes special assembled precedence diagram.Because each nominative has based on four piles
The connection stake of secondary lattice, referred to as Y stake between lattice, the Y stake position on 1/4 cylinder of each large cylinder is all different from direction, so
Special manuscript all must be drawn before each nominative steel sheet pile assembly, therefore make special assembled precedence diagram herein.Consolidation shed
Ground workmen, according to assembled precedence diagram, processes steel sheet pile successively.The main contents of processing have：The opening up of hole for hoist, T-slot
Weld, close up the cutting of stake, open up assembled hole.After steel sheet pile machines, according to assembled precedence diagram, steel sheet pile is numbered.
The opening up of hole for hoist：
The use of gas cutting equipment is that often a piece of steel sheet pile cuts two and hangs stake holes in steel sheet pile processing place, and by set square hang to
On steel sheet pile.Hole for hoist when opening up, using potsherd, protection is thermally shielded to lower floor's steel sheet pile, it is to avoid gas cutting is to lower floor's steel plate
The damage of stake.
The welding of T-slot：
Required according to site technique, part steel sheet pile needs to be fixed using T-shaped hook.Special according to the structure of pre-splicing support
Point, every 1/4 steel sheet pile need to weld the steel sheet pile totally 10 of T-slot.
Referring to Figure 17, the every steel sheet pile 300 needing to weld T-slot need to weld upper and lower two sections of T-slot 301 altogether, away from
Fix tentatively with a distance from steel sheet pile stake top away from for 13.5m and 30.5m, need to be after that length of plate grab determines, according to steel during construction
The length of sheet pile determines.The length of every section of T-slot is 0.5m.
Close up the cutting of stake and open up assembled hole：
According to the 1/4 preframed technological requirement of circle, each nominative lattice body has 4 to close up stake to be spliced into 4 1/4 round lattice bodies
An individual full circle, due to the limited high request in job location, closing up stake 400 needs sectionally smooth join, and the connected mode of splicing adopts spiral shell
Tether and connect.
Referring to Figure 18, need when closing up stake splicing for the assembled splicing steel plate 401 reinforced with for assembled securing member
Bolt and nut 402.
Steel sheet pile cutting cuts into the length of needs using cutting machine, and the splicing steel plate using appropriate size and bolt spiral shell
Female.The single merogenesis steel sheet pile closing up stake needs is necessary for a whole steel sheet pile and cuts into.
Meanwhile, need assembled hole accordingly is opened up on corresponding steel sheet pile, can be holed using 10 hole drill machines, boring is straight
Footpath is 38mm.
Required according to man-made island scene limit for height, closing up stake installation needs merogenesis spreading, and 1 is closed up steel sheet pile and is divided into 2～4 sections of peaces
Insert, close up and between the upper and lower sections of stake, adopt two-sided junction steel plate, bolt connection.Must be according to the limit of cylinder position before construction
High level, determines and closes up a merogenesis length, it is then determined that junction steel plate and bolt hole position, and while 1/4 cylinder is pre-splicing, will
Often section closes up stake and its junction steel plate machine-shaping (include sheet pile cutting, set bolt hole and hole for hoist etc.), last and corresponding
The pre- kit of 1/4 cylinder be transported to scene together.Close up a splicing operation to carry out at the scene.
1.5th, rear steel sheet pile will be machined and Material Staging Area will be hung onto using special hoisting bar, when hanging need to according to assembled order according to
Secondary stacking.Stake of closing up after machining directly hangs onto on nominative cargo ship 202b.
1.6th, pre-assembled assembly of 1/4 round steel sheet pile
According to assembled order, the steel sheet pile after lifting processing successively.Because steel sheet pile stake is long super in 23.6m～37.1m
Long stake, by the way of needing to hang using 3 points.Assembled loop wheel machine D260 boom-type tower crane due to arrangement on forward position water front in this example
Only one of which gib head, needs to lift using the cooperation of 50t truck crane, when steel sheet pile angle close to vertical when, lower button loosens, tower
Sling steel sheet pile.
After the completion of steel sheet pile lifting, hang lifting steel sheet pile, rotate arm support, sheet pile is in place, complete to splice.
Referring to Figure 19, when splicing first steel sheet pile, steel sheet pile 501 is hung support meanss 503 head piece assembled to transport
On hook 502 on, and be plugged benchmark when T-shaped pin splices as bottom sheet steel sheet pile.
Referring to Figure 20, utilize a guider 602 after the completion of first steel sheet pile 601 connects, for follow-up splicing steel sheet pile 603
Guiding is provided, splices remaining steel sheet pile successively.
The 1.7th, the assembly of pre-assembled of 8 1/4 round steel sheet piles is completed on cargo ship 202b.
1.8th, depart from completing the assembled cargo ship of pre-assembled of 8 1/4 round steel sheet piles, carry out the spelling of next cargo ship
Second step, 1/4 pre-assembled of round steel sheet pile water transportation
Referring to Figure 21, firm in transportation for guaranteeing pre-assembled of 1/4 cylinder steel sheet pile, " hung using steel sheet pile
Anchor combines " method.When steel sheet pile is assembled, using hook, steel sheet pile is hung on transport support, upper and lower in transport support
It is disposed with T-shaped hook, steel sheet pile welds T-slot every 6 in relevant position, for locking steel sheet pile with transport support at two.
After the completion of the assembly of steel sheet pile pre-splicing load, it is disposed with clamp device every 15m from top to bottom in pre-splicing load both sides, using fastening
Pre-splicing load is connected it is ensured that pre-splicing load will not rock in transit bolt with transport support.
During whole water transportation, cargo ship reaches job site using the placement of haul.
When fully loaded cargo ship drives towards job site：
Towage mode 1：Three boats drag 6001 wheels (or three boat drag 3005) towing (master drags), China and Sweden drag 6 auxiliary formation works and
Auxiliary towage (tie up and drag), convoy, the above maximum height of the water surface is 39.8m, and Breadth Maximum is 35m, and part flight number maximum traction is long
Spend for 235m.
In which, cargo ship is dumb barge, is hauled as navigating power ship using tugboat.During haul, using one
Main tugboat towing in a usual manner, the special towing cable of main tugboat stern is connected with transport ship bow part bollard；Article one, auxiliary tug exists
Cargo ship side afterbody is tied up in a usual manner and is dragged, and the special towing cable of auxiliary tug bow, stern is tied up on cargo ship bollard, auxiliary tug
And play convoy effect.
Towage mode 2：Three boats are dragged 6001 wheels (or three boat drag 3005) to tie up and are dragged (master drags), China and Sweden drag 6 auxiliary formation works and
Auxiliary towage (tie up and drag or pushing tow), convoy, the above maximum height of the water surface is 39.8m, and Breadth Maximum is 40.5m---48m, traction
Length is 135m.
In which, cargo ship is dumb barge, is hauled as navigating power ship using tugboat.During haul, using one
Main tugboat is tied up in a usual manner and is dragged, and main tugboat is tied up in a usual manner in cargo ship side afterbody and dragged, main tugboat bow, the special towing cable of stern
Tie up on cargo ship bollard.Article one, auxiliary tug is tied up in a usual manner in cargo ship opposite side afterbody and is dragged, auxiliary tug bow, stern
Special towing cable is tied up on cargo ship bollard.
After cargo ship enters related waters (as waters of Hong Kong), interchangeable by local one 3600 ZP type high-power tugboats
And two 1200 horsepower tugboats auxiliary (job site harbour work boat) connect and drag, it is directly entered construction point in place.
After the prepackage pack on cargo ship removes, unloaded transport directly rejects prepackage by corresponding tugboat traction sky
3rd step, 1/4 pre-assembled of round steel sheet pile scene spelling with close up
3.1, sink and set support steel pile tube
Tooling bracket support steel pile tube adopts 1 crawler crane of configuration and 1 hydraulic vibration driver on barge with deck to implement pile sinking；With
When be provided with leading truck on barge with deck, and pile gripper is provided with this leading truck, so support steel pile tube is accurately led
To, and ensure that support steel pile tube sinks the stability during setting.
The precision of supporting pile stake position will directly influence interior moulding bed installation accuracy, thus having influence on steel sheet pile lattice body positioning accurate
Degree.For guaranteeing piling positioning precision, every pile driving barge configures 3 GPS survey stations, 1 inclinometer, 2 infrared range-measurement systems and electricity
Brain monitoring system etc. carries out piling positioning (land 1 common reference station of configuration), and the certainty of measurement of GPS Piling Positioning all exists
Within 30mm, within pile sinking completion off normal can be controlled in 100～150mm.Good for the perpendicularity and stress of moulding bed in ensureing
Good, all supporting pile top mark height need to control within 20mm.
Heavy setting adopts GPS to control elevation (land total powerstation compares and checks) during first steel-pipe pile；Sink and set the 2nd～the 9th
During steel-pipe pile, elevation is compared using T310 horizontal scanner, as variant in elevation can by shake heavy and on pull out and adjust at the beginning of steel-pipe pile
Successive step stake top absolute altitude, takes mowing steel pipe pile head and thick billet levelling if necessary.
3.2, " tooling bracket " upper support moulding bed lifts
Require for meeting different Engineering Zone limit for height, in this engineering, the lifting of moulding bed and pre-assembled of 1/4 circle is respectively by 2
The horizontal hanging arm crane ship of differing heights completes.Interior moulding bed highly can meet zones of different minimum aviation limit for height after installing will
Ask.Support jig adopts the lifting of special purpose ship 2 × 2000kN main hook to install.
Supporting pile top flange is radially arranged bolt hole, and support jig flange in the bottom is arranged circumferentially bolt hole, upper lower flange
Between maximum allowable eccentric be 120mm, the support of supporting pile flange top center spacing steel can be rectified a deviation 0～150mm, even if pile sinking deviation
All can ensure within reaching 270mm that upper lower flange can smoothly dock and effectively couple.When being more than 270mm as run into piling deviation,
Rectified a deviation using suitable anchor mode before support jig is installed, until meet supporting pile flange docking with support jig flange
And connection request.
Plan-position and the perpendicularity of support jig is measured in real time in support jig installation process.Can in the case of allowing
Support jig plan-position is moved by crane ship, reduces support jig plan-position deviation as far as possible.Support jig is installed vertical
Degree controls (steel plate pile verticality requirement presses 1/75) by 1%, and generally the stake top discrepancy in elevation all can guarantee that support within 20mm
The perpendicularity of moulding bed requires.When perpendicularity can not meet require when, crane ship temporarily lifts by crane support jig, and is inclined according to support jig
On supporting pile flange plus billet is levelling for gradient.
This two-step can be constructed while carrying out the pre-splicing construction of nominative 1/4 land-based area, so can be further
Save the engineering time.
3.3,1/4 pre-assembled of round steel sheet pile liftings and full circle are assembled
After support jig installation 1/4 round steel sheet pile assembly tab in place and corresponding transports scene, risen using horizontal hanging arm
Weight ship (601 or 602) anchoring side burst lifting assembly tab (suspension hook is 2 × 1500kN) in the body of island.For preventing in hoisting process
Assembly tab swings, and arranges steel sheet pile cohesion device in the deck of crane ship, this device two ends is embraced using fluid pressure type tightener
Tight edges steel sheet pile.Whole hoisting process is as follows：
First, pre-assembled of first group of 1/4 round steel sheet pile of side lifting in the body of island, horizontal hanging arm crane ship passes through steel sheet pile
Arc hanging beam lifts by crane pre-assembled of 1/4 round steel sheet pile, will be transformed into support upper strata by arc hanging beam by the conversion of suspension system
On platform, realization pre-assembled by 1/4 round steel sheet pile is lifted in tooling bracket system；Then pass through the rotation on tooling bracket
Device drives and for the ring rotation beam on support to rotate 180 °, thus driving the pre-assembled rotation of first group of 1/4 round steel sheet pile
180 ° (as shown in figure 22).
Pre-assembled of special floating crane handling 1/4 round steel sheet pile, to cylinder position, arc hanging beam is installed to the rotation of upper mounting plate
Liang Shang, it may be noted that the lifting set square of 48 steel sheet piles needs can be suspended on the hook of support jig upper mounting plate top during installation.Apply
Work operator untie out of stock with arc hanging beam for hoisting wirerope on upper mounting plate, and crane ship lifting arc hanging beam moves ship lifting
Second 1/4 circle, starts the revolution driving motor on tooling bracket upper mounting plate, and operation rotating beam goes to design attitude.
Then, pre-assembled of second group of 1/4 round steel sheet pile of homonymy lifting, detailed process as above, after rigging out, crosses work
The ring rotation fine strain of millet on rotary apparatuss driving arm on dress support rotates 90 °, thus driving pre- group of first group of 1/4 round steel sheet pile
Load and pre-assembled of second group of 1/4 round steel sheet pile is equidirectional rotates 90 ° (as shown in figure 23) again.
Then, pre-assembled of the 3rd group of 1/4 round steel sheet pile of homonymy lifting, detailed process as above, after rigging out, crosses work
The ring rotation fine strain of millet on rotary apparatuss driving arm on dress support rotates 180 °, thus driving first and second and three group of 1/4 circle
Pre-assembled entirety of steel sheet pile is equidirectional to rotate 180 ° (as shown in figure 24) again.
Finally, pre-assembled of the 4th group of 1/4 round steel sheet pile of homonymy lifting, detailed process is as above (as shown in figure 25).
3.4, close up pile driving construction
Pre-assembled of 4 group of 1/4 round steel sheet pile lift respectively in place after, special floating crane is withdrawn, and the shipwreck that shakes enters a little, using shaking
Heavy ship-mounted crane is respectively mounted 4 and closes up steel sheet pile (as shown in figure 25).
Required according to limit for height, closing up stake installation needs merogenesis spreading, close up stake once assembled length for increasing, raising work efficiency, 4
Organize and need to transfer to stake bottom and mud face about 0.5m spacing after the pre-splicing piece installing of 1/4 large cylinder is hung, then carry out closing up stake splicing.Specifically
Need to transfer to stake bottom with mud face about after pre-splicing for 4 group of 1/4 large cylinder piece installing is hung by the lowering or hoisting gear on " tooling bracket "
At 0.5m spacing.
Referring to Figure 26,1 is closed up steel sheet pile 30 and is divided into 2～4 sections to assign, and closes up stake and is connected using junction steel plate bolt 31.
Close up stake and segmentation cutting and boring, cutting section are carried out to cutting processing place of holing using 150t crawler crane transition
Length determines according to construction area limit for height, and single joints material requested has splicing steel plate, bolt and nut.
Steel sheet pile cutting cuts into the length of needs, splicing steel plate and bolt and nut outsourcing using cutting machine.Single close up
The merogenesis steel sheet pile that stake needs is necessary for a whole steel sheet pile and cuts into.
Steel sheet pile boring adopts 10 hole drill machines.
Machine rear steel sheet pile and Material Staging Area is hung onto using special hoisting bar, need to be according to assembled order heap successively when hanging
Put.Stake of closing up after machining directly hangs onto on nominative cargo ship.
After completing assembly, dilate each layer platform girder steel and the steel plate compensating tooling bracket by the air bag on tooling bracket
The gap between the lattice steel sheet pile large cylinder of formation is closed up in stake assembly, so that the moulding bed effective support steel on tooling bracket
3.5, adjustment Y shaped steel plate pile lock position
Generally, it is directly rotated to position during first 1/4 assembly tab rotation, if full circle finds after closing up to be connected with secondary lattice
Stake (Y shaped steel plate pile) position slightly deviation, then before full circle sinks, start the revolution driving motor on upper mounting plate, operate rotating beam
Finely tune to design attitude.
4th step, it is heavy that packet is shaken
Because large cylinder position sea bed face structure is that one layer of braided geotextile adds 2m thickness blotter.Geotextiles and rubble pad
Layer completes before great circle tube construction.In order to keep the perpendicularity of cylinder after lower stake well, this example is before great circle tube construction
It is punched out using steel-pipe pile in cylinder steel sheet pile position in advance, to penetrate readily through the soil on sea bed face when cylinder is integrally transferred
Work cloth, and guarantee the cylinder perpendicularity after lower stake.
Before injection supporting pile, the geotextiles on the steel sheet pile position of cylinder position are abolished using steel-pipe pile punching, when shaking heavy, adopts GPS
Positioning is it is ensured that punching position is accurate.
After completing steel sheet pile position pre-punched hole, then carry out the support steel pile tube of tooling bracket and the installation of tooling bracket,
And the pre-assembled lifting of 1/4 round steel sheet pile and full circle assembly.
On this basis, this process carries out lattice steel sheet pile large cylinder nominative sheet pile combination free combat technique, concrete mistake
Journey is following (referring to Figure 27)：
4.1, outer anchor ear is set
For controlling rocking and cylinder perpendicularity after stake under steel sheet pile, using setting steel hoop outside large cylinder.Each
After the completion of cylinder closes up, below stake top and stake bottom more than certain position (according to the depth of water and estimation embedded depth determine) adopt 2
Outside road, steel hoop is embraced and is wrapped up in cylinder, and the heavy later stage of shaking removes.
4.2, sheet pile packet is welded to connect
In 1/4 cylinder assembly base, (except closing up each 6 of mouthful both sides) is welded in certain position below every 3 steel sheet pile stake tops；
Live steel sheet pile install in place and after the completion of closing up, will be integral for the welding of whole steel sheet piles, make cylinder have entirety by welding
Property so that assembled good steel sheet pile deadweight ensure when sinking steel sheet pile uniformly sink and shackle after avoid local to slip stake.Under entirety
Sink, shake heavy after progressively solution constraint.
4.3, the slack tide period integrally transfers
Steel sheet pile cylinder integral sinking will select to carry out in slack period, to reduce current, the shadow to lower pile verticality for the wave
Ring.Carry out lifting decentralization using the elevating function that special tooling bracket possesses.During decentralization, steel sheet pile hangs on the extension of upper mounting plate
On hook, middle platform is located at lowest order and is in locking state, by the hoister system on lower platform, transfers upper mounting plate, steel sheet pile
Sink therewith.), until steel sheet pile deadweight sinks to stopping, then releasing steel sheet pile top lifting set square, after uncoupling, under continuation
The upper mounting plate of fall tooling bracket is less than steel plate stake top 2～3m, and as heavy guiding of shaking, it is heavy that preparation is shaken.In deadweight sinking watching, according to
Water level, removes lower floor's steel hoop and adjusts upper strata steel sheet pile levelness.
Whole sinking watching is driven and is controlled by the lowering or hoisting gear of tooling bracket.
4.4, it is heavy that packet is shaken
Because scene is narrow, it is accelerating construction progress, packet is shaken to sink and joined vibration hammer in cylinder using two 250t crane ships
Inside and outside carry out.
Using symmetrically shake heavy, control shake heavy direction and the measures such as heavy depth of shaking by several times, the change of sheet pile after effective control pile sinking
Shape.Specific operating process is as follows：
First, by two 250t crane ships join vibration hammer symmetrical carry out inside and outside cylinder layered circulation shake heavy.
First cylinder 196 pile is grouped in this operation, and numbers, every group of 5～6 piles；Then every ship adopts
One vibration hammer joining 6 fixtures shakes heavy every group of steel sheet pile simultaneously, and every group of stake is once shaken heavy depth about 1.5～2m, then shakes and avale
One group of steel sheet pile, 1.5～2m until cylinder 196 pile all sinks；Then the recycled back heavy every group of steel sheet pile that shake makes 196 again
Synchronous 1.5～the 2m that sinks again of stake, it is heavy that continuation layered circulation shakes, and shaking with sheet pile, it is heavy to avale, and circulation declines upper mounting plate, until upper flat
Platform is close to middle platform；Because steel sheet pile all pressed close to by upper mounting plate, hinder vibration hammer, it is heavy to carry out after need to being lifted shaking again.
Then, lifted tooling bracket upper mounting plate, and carry out layered circulation shake heavy.
Proceed packet after the upper mounting plate lifting of tooling bracket, layered circulation shakes, and (process is such as heavy steel sheet pile in this operation
Upper described), until steel sheet pile top is close to the middle platform of tooling bracket, each submergence depth 1～1.5m.In cause, platform is all pressed close to
Steel sheet pile, hinders vibration hammer, and it is heavy to carry out after need to being lifted shaking again.
Finally, lifted tooling bracket middle platform, and carry out layered circulation shake heavy.
In this operation, after the middle platform lifting of tooling bracket, continue packet, layered circulation shakes heavy steel sheet pile (process as above institute
State), until steel sheet pile design top mark is high.Submergence depth 0.5～1m every time.
4.5, complete to shake heavy after, remove steel hoop, tooling bracket, finally pull out support steel pile tube.
Complete the construction at the scene of diameter 31.194m lattice steel sheet pile large cylinder nominative accordingly, from upper work progress,
Whole construction technology is made up of four big processing steps：Land-based area is pre-splicing, water transportation, live spelling close up, be grouped and shake heavy, and each walks
Suddenly all there is independent process characteristic.
The pre-splicing feature of land-based area：
1) 1/4 large cylinder preassembling selects in the inland of the harbour with more than 4000 tonnes and more than 10000m2 area
Being constructed in area, solves the problems, such as that pre-splicing place and pre- kit fall to condemning as false or erroneous topic.
2) by the way of assembled place adopts land and water combination, land-based area is material stockyard, sheet pile is processed, hoisting operation place；Water
Domain is by the use of cargo ship as assembled place, serves the area that both saves space, and eliminates land having bad luck and the link refuted that falls again.
3) specially design, machined special pre-splicing support in Ship for Transporting Module.Nominative cargo ship is deck bearing goods：First
Installation and transportation support on plate, transport support is connected with ship board using electric welding technique.Both having solved pre-splicing support needs
Ask, in turn ensure that reinforcing stable problem during pre- kit Shipping.
4) the assembled D260 swing arm walking crane using 60m arm support or 150t crawler crane, efficiently solves and pre-splicing hangs height
Problem with lift heavy.
5) carry out lifting by crane in steel sheet pile field and transporting using hanging beam using 150t crawler crane, solve pre-splicing field material and fall
Fortune and lifting problem.
6) specially devise extension stake mode and the device on assembling support.When both having solved assembly, asked by fixation temporarily for sheet pile
Topic, solves the problems, such as the lifting to scene for the pre- kit again.
7) determine by the 1/4 circle pre- kit of nominative steel sheet pile being transformed on assembled device in the mounting bracket of man-made island cylinder position
Switching arc hanging beam, solve the problems, such as pre- kit to scene after lifting.
Water transportation feature：
1) the pre-splicing piece installing of 37.1m high lattice steel sheet pile 1/4 large cylinder adopts long-distance transport mode waterborne, belongs to the world and first should
2) special pre-splicing support is arranged on Ship for Transporting Module.Transport support adopts electric welding technique and ship board
Connect, form ship entirety, the pre-splicing piece installing of 1/4 large cylinder is bearing goods.This means of transportation and structure are the world and first should
3) using " cradle integration " technique it is ensured that bracket stable during transport.
4) cargo ship is directly as a sheet pile assembly place part.Using cargo ship, directly as 1/4 cylinder steel sheet pile water
Domain assembly place, decreases building block and falls the link refuted, strengthen the stability during ship carried and transported, and save assembly
Place land-based area area.Both save cost, increased Transport Safety again.
5) solve the stable problem of the pre-splicing load of transportation Steel Sheet Pile by the way of " steel sheet pile is hung anchor and combined ".
When steel sheet pile is assembled, using hook, steel sheet pile is hung on transport support, at upper and lower the two of transport support, is disposed with T-shaped hook,
Steel sheet pile welds T-slot every 6 in relevant position, for locking steel sheet pile with transport support.The pre-splicing load of steel sheet pile is spelled
After the completion of dress, be disposed with clamp device every 15m from top to bottom in pre-splicing load both sides, using fastening bolt by pre-splicing load with
Transport support connects it is ensured that pre-splicing load will not rock in transit.
6) the barge with deck transport pre-splicing piece installing of multiple superelevation steel sheet pile 1/4 large cylinders, employs towing and ties up the side dragging combination
Formula is transported, and nation's tugboat is simultaneous to play convoy effect.Solve towage during long-distance transport and stable problem.
Live spelling closes up feature：
1) lattice steel sheet pile large cylinder on-site consolidation has live cylinder position to dissipate spelling technique, scene entirety preassembling work in the world
Skill, but under the conditions of limit for height, the scene splicing of overlength sheet pile cannot be realized.In addition, this engineering single nominative steel sheet pile gross weight
Typically in 450t～560t, under conditions of aviation limit for height, the depth of water are shallow, suitable crane ship is there is no once to complete a master at present
Lattice integral hoisting and sinking.Therefore, during this engineering construction, for reducing a live hoisting weight, full circle nominative is divided into 4 1/
4 round steel sheet pile assembly tab lift respectively, thus reduce crane ship hung away from and elevating capacity requirement, greatly reduce meanwhile
Work on the spot amount, scene only need to hang 4 1/4 pre- kits, and in splicing, 4 are closed up stake.
2) the general stake of this engineering lattice steel sheet pile is long reaches 37.1m, for international at present.The lattice steel sheet pile of the present invention
Large cylinder nominative sheet pile 1/4 cylinder scene joining method belongs to first Application.
3) 1/4 large cylinder pre- kit spelling selects to carry out on the special tooling bracket be located at live pier position.After spelling closes up
Directly can following stake, shake heavy, need not go lifting again.
4) the special tooling bracket designing for on-site consolidation is initiated for this area, and its height design solves live limit for height
Under the conditions of be difficult to the problem that is used in turn；Structure design solves the problems, such as typhoon period frock stable problem, ultra-long pile integral hanging；
The elevating function that frock possesses solves the lifting decentralization problem after ultra-long pile assembly, water lacing film problem, increase are dragged in profundal zone
Close up a single-unit length and improve work efficiency problem, frock hinders vibration hammer descent path problem when sheet pile shakes heavy；Frock is possessed
Spinfunction solve the problems, such as in elongated zones lift-on and lift-off ship oceangoing ship can not circle round displacement lifting, small-sized crane ship can not carry out whole
The problem that body closes up, major-minor lattice connect stake orientation problem, close up the convenient problem of operation；What frock possessed dilates support function solution
The problems such as inclination of ultra-long pile and Deformation control of having determined.
5) according to man-made island field condition it is determined that closing up stake assembly length.According to the 1/4 preframed technological requirement of circle,
Each nominative lattice body has 4 to close up stake 4 1/4 round lattice bodies are spliced into a full circle, due to the limited high request in job location,
Closing up stake needs sectionally smooth join, and the connected mode of splicing is with bolts.Close up stake and adopt special connecting plate, bolt connection skill
Art, solves the highly constrained difficult problem when height limiting zone splices operation to fore shaft.
6) special floating crane specially manufacturing and designing solves the problems, such as lift heavy, the lifting of major diameter tooling bracket under the conditions of limit for height
Shi Qichong brachium problem, phytal zone drauht problem, major diameter tooling bracket lifting when be accurately positioned problem, by special fortune
On defeated ship steadily a difficult problem for lifting 1/4 pre- kit, the difficult problem 1/4 pre- kit being steadily arranged on tooling bracket, the wave is high, and stream is anxious
Rig a ship stability problem under state.
7) the Special arc hanging beam specially manufacturing and designing and special transition hanging bracket efficiently solve the lifting of arc 1/4 pre- kit
When stability stable, reduce lifting steel wire rope height problem.
8) the pre-splicing piece installing of 1/4 large cylinder is lifted in tooling bracket system, and suspension system need to be transformed into by arc hanging beam and prop up
On the hook of frame upper mounting plate hanging beam, this suspension conversion method is also to use first.
It is grouped heavy feature of shaking：
1) diameter 31.194m, the lattice steel sheet pile large cylinder of long 37.1m are grouped, using single vibration hammer, heavy technique of shaking, for this
Field first Application.
2) packet shake heavy join vibration hammer using two 250t crane ships and carry out, adapted to the bar that live limit for height is little, the depth of water is shallow
Part, shakes compared to entirety to sink and joins 20 multiple stage large-scale vibratings hammers using large-scale crane ship simultaneously, cost is greatly saved.
3) it is punched out using steel-pipe pile in cylinder steel sheet pile position in advance before constructing, it is difficult when cylinder is integrally transferred to solve
To penetrate the problem of the geotextiles on sea bed face, and ensure that the cylinder perpendicularity after lower stake.
4) carry out the lifting decentralization after ultra-long pile assembly using the elevating function that special tooling bracket possesses, it is heavy that packet is shaken
It has been also adapted to the stake top out-of-flatness problem that lower stake causes because soil property is uneven.
5) steel hoop is set using outside large cylinder, substantially reduces rocking after stake under steel sheet pile, and effective control
Cylinder perpendicularity after lower stake.
6) profundal zone is provided with interior anchor ear under water, effective control steel plate pile verticality, and reduces sheet pile after pile sinking
7) using symmetrically shake heavy, control shake heavy direction and the measures such as heavy depth of shaking by several times, sheet pile after effective control pile sinking
Ultimate principle, principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its