CN1225590C - Large-diameter steel cylinder vibration sinking process - Google Patents
Large-diameter steel cylinder vibration sinking process Download PDFInfo
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- CN1225590C CN1225590C CN 03109305 CN03109305A CN1225590C CN 1225590 C CN1225590 C CN 1225590C CN 03109305 CN03109305 CN 03109305 CN 03109305 A CN03109305 A CN 03109305A CN 1225590 C CN1225590 C CN 1225590C
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Abstract
The present invention relates to a vibration sinking technique method for a large diameter steel cylinder. A large diameter steel cylinder is adopted, and four hydraulic vibration hammers are used for forming a vibration system through a synchronizer to implement the vibration sinking of the large diameter steel cylinder. A guide device is used for quickly positioning. A stone sand pile extrusion method is used for removing a block stone interlayer in the position of a cylinder wall before vibration sinking having the block stone interlayer. A suspension hook is used for falling to cause the large diameter steel cylinder to sink, the head of the suspension hook always has 110t to 150t of force in the process of self sinking and vibration sinking, and a falling speed is controlled. Micro deviation and inclination can be realized by optionally adjusting the quickness of two hook heads on a suspension boat and the variation amplitude of a derrick mast. When deviation is greater than 10cm, and an inclination degree exceeds 1 percent, the micro deviation and the inclination can also be adjusted. The vibration sinking technique method has the advantages of high work efficiency, good vibration sinking quality and superior engineering quality. A deviation qualification ratio of the large diameter steel cylinder is 100%, a qualification ratio of the inclination degree of the large diameter steel cylinder is 85%, and a sinking qualification ratio of the large diameter steel cylinder is 92.5%. The bottom of the large diameter steel cylinder all achieves a supporting force level. The same vibration system can be suitable for the vibration sinking of cylinders with different diameters through an additional vibration beam which is adopted.
Description
Technical field:
The invention belongs to the job practices of building harbour, design the vibrating hammer system of a kind of major diameter steel cylinder vibration sinking technology method and use especially.
Background technology:
Plug-in type large cylinder structure late 1940s firstly appears in France, and the former Soviet Union began to adopt and built harbour the sixties in 20th century, and the maritime works's engineering in states such as Japan, Holland, the U.S. also is applied then, introduces China the beginning of the eighties.What the material of large cylinder initially adopted is steel concrete, and later useful steel are made.It sinks to the following method of mud face, the steel concrete large cylinder is most of cuts the earth for boxing out in the heavy wall or adopts the open caisson construction method, but adopts heavy wall to box out shoveling, open caisson construction and negative pressure, the problem that adds heavy (being aided with shovelings, jetting etc.) method existence of load combined pressure mainly contains:
(1) penetrates complexity (containing burning into sand layer or lens) soft soil layer difficulty;
(2) the stack shell deflection can not be prevented, the sinking of " control (absolute altitude, off normal, inclination) is arranged " can't be accomplished;
(3) construction cost height, speed is slow, and workmanship is poor.
Material is economized, quality is good, speed is fast and low cost and other advantages though the plug-in type cylindrical structure has, but key is how it to be sunk to that design is desired goes into the mud degree of depth, and reach desired verticality of design and normotopia, also be prospect and the developing direction that is always restricting the large diameter cylinder structure applications
Summary of the invention:
Purpose of the present invention: major diameter steel cylinder vibration sinking technology method is provided: adopt many hydraulic vibration drivers to form vibrational system by sychronisation, synchronous vibration sinking major diameter steel cylinder, the material that reaches use plug-in type cylindrical structure is economized, quality is good, speed is fast and low cost and other advantages, simultaneously it is sunk to that design is desired goes into the mud degree of depth, and reach desired verticality of design and normotopia.
Content of the present invention is: a kind of major diameter steel cylinder vibration sinking technology method, it is characterized in that: the steel cylinder that adopts diameter 12m～25m, height 13m～45m, adopt many hydraulic vibration drivers to form vibrational system by synchronized in steel cylinder upper port, vibration-sunk passes thicker sandstone interlayer.
Major diameter steel cylinder vibration sinking technology method: adopt the steel cylinder of diameter 12m～13.5m, height 13m～34m, adopt four hydraulic vibration drivers to form vibrational system by synchronized in steel cylinder upper port, vibration steel cylinder sinks to passing thicker sandstone interlayer.
Adopt crane ship to hang and form vibrational system by synchronized by four hydraulic vibration drivers, clamp the steel cylinder by the hydraulically operated fixture under four hydraulic vibration driver brace summers and arrive the tube position, suspension hook descends, sedimentation steel cylinder, when steel cylinder normotopia when being sink to the suspension hook lift heavy at 110t～150t, suspension hook stops to descend, and finishes and drowns oneself; Survey crew is checked cylindrical shell verticality and off normal again, in allowed band, can open hammer shake heavy; The steel cylinder shakes and hangs the power that gib head on the ship has 110t～150t all the time in the heavy process, and control gib head decrease speed, in order to inclination and the off normal in the heavy process that reduces to shake.If in the heavy process of shaking, finding has micro-off normal and inclination, can hang the speed of two gib heads on the ship by adjustment at any time and the luffing of gin pole is realized; If off normal can be under the situation of not stopping to hammer into shape above 1% o'clock greater than 10cm, gradient, stop that gib head descends and pull out in the vibration to former opening and stop hammer about the above 0.5m～1.0m of the absolute altitude that shakes, by degree of tightness anchor hawser, two gib heads of lifting with face upward measure alternate repetitions such as the gin pole of bowing and carry out, until cylindrical shell verticality and off normal in allowed band, it is heavy that the errorless back startup hammer of drowning oneself again continues to shake, and stops the hammer standard until reaching.
In that 0.4m～6.3m is thick to having, the piece stone interlayer of particle diameter 5cm～30cm, formally shake and must handle before heavy, adopt the piece stone interlayer at " squeezing the stone sand stake " method removing barrel place:
Locate with the two-way control of transit, sink with 45 kilowatts of electric vibratings hammers and establish four diameter 500mm, the leading truck positioning supports stake of long 16m, with high 2.4m, external diameter 13.0m, the steel leading truck of internal diameter 11.6m, peace hanging in the stake of four leading truck positioning supports;
With 2 pintongs stake point alive is arranged, the steel pipe of diameter 500mm is along the leading truck outside, under transit control, with 45 kilowatts of electric vibrations hammer first steel pipe shaken heavy and pass piece stone interlayer being close to the leading truck outside, piece stone is extruded onto beyond the diameter 500mm, be close to first steel pipe then and be close to leading truck outside heavy second steel pipe that shake, after passing piece stone interlayer, vibrating hammer is come back to first steel pipe place, extricate oneself from a predicament and brace oneself up to action after in steel pipe pile, irritating sand, make the sand face slightly surpass piece stone interlayer end face and get final product, also should in steel pipe, pour water, in order to the sand steel pipe that comes off, then first steel pipe shaken sink to second steel pipe and be close to opposite side place, the leading truck outside after, second steel pipe irritated sand extricates oneself from a predicament and brace oneself up to action, adopt again and again every one and jump a ground intubate, the mode of " taking a step " is irritated sand and is extricated oneself from a predicament and brace oneself up to action, and will treat along the saddle outside successively that heavy round steel barrel place piece stone squeezes to remove.
Steel cylinder localization method is: the steel cylinder is placed in the leading truck of refuting location side, and inboard the refuting with location side of leading truck all has adjustable flexible roller on the termination, and the steel cylinder outer wall leans against on these three the adjustable flexible rollers; Under the control of measuring apparatus, refute by the degree of tightness of adjusting many anchor hawsers and carry out coarse positioning location side, and three adjustable flexible rollers are carefully located.
The vibrating hammer system that a kind of major diameter steel cylinder vibration sinking technology method uses, it is characterized in that: under the former supporting beam of existing vibrating hammer system, assist and establish new supporting beam, on the new supporting beam hydraulically operated fixture that adapts to steel drum diameter is arranged, the former supporting beam of existing vibrating hammer system and new supporting beam closely stick together with bolt, form an integral body.
Invention effect: the work efficiency height that this process steel cylinder shakes heavy: each steel cylinder heavy finishes 4 minutes and 44 seconds time spent～1 hour 13 minutes and 08 second from sinking to certainly to shake; Refute lifting steel cylinder from the fortune side of depositing to heavy end that shake, 41 minutes monotubular times spent～4 hours 14 minutes.
Construction practice: at heavy first steel cylinder of examination on June 22nd, 2002, beginning on July 6 normal construction, heavy last the steel cylinder that successfully shook September 8 lasts 64 days and sink 39 steel cylinders, shakes in average 1.6 days to sink one.September 7, daily efficiency heavy four the steel cylinders that shake, July 3 and on August 23 two light heavy 3 the steel cylinders that shake, the shake efficient of heavy 2 steel cylinders of 8 light is arranged.
The steel cylinder heavy quality of shaking, China does not still have the steel cylinder heavy quality control standards (QCS) of shaking, and compares with the designing requirement value, proves that China is that reasonably workmanship is good with the steel cylindrical design of the heavy technology sinking of shaking first.
Steel cylinder off normal: designing requirement is less than 30cm, and actual off normal all meets design requirement, qualification rate 100%;
The absolute altitude designing requirement reaches bearing stratum at the bottom of the steel cylinder, and the tube end all reaches the bearing stratum of designing requirement, qualification rate 100%;
Steel cylinder gradient: designing requirement≤1.0%.Removing 30# is 1.4%, and 26#, 20# and 13# are 1.5%, and 17# is 1.8%, and 40# is 2.0% outside totally 6 tubes, and all the other all adhere to specification, and qualification rate is 85%.
Press the evaluation of plan specified standard, steel cylinder sinking qualification rate is 92.5%, has reached good criteria.
This process provides new technical support for China's port construction to profundal zone, off-lying sea and silt coast development, mole, wall, shore protection, harbour and the large pier that it can be applicable to mud matter or sand coast connects the construction of bank structure, and can promote the use of in the Foundation Design in fields such as water conservancy, bridge, power industry, ocean engineering, will produce far-reaching influence to the construction of China's marine traffic engineering and the construction of association area.
Description of drawings
Fig. 1 is former vibrating hammer system drawing
Fig. 2 is 4 hydraulic vibration driver system drawings after the repacking
Fig. 3 squeezes stone sand stake marine positioning frame figure
Fig. 4 squeezes the local figure of stone sand stake marine positioning frame supporting pile
Fig. 5 is a steel cylinder hoisting and locating lateral view
Fig. 6 is a steel cylinder hoisting and locating vertical view
Fig. 7 is that the flexible roller structure figure that guiding adds refutes in location side
The specific embodiment
Use 4 large hydraulic vibrating hammers, form vibrational system by sychronisation, the heavy major diameter steel cylinder that shakes is initiative at home.With hydraulic vibration driver group (be different from electricity drive) the heavy major diameter steel cylinder that shakes, also belong to the first in the world, solve many key technical problems that hydraulic vibration driver synchronous vibration is vibrational system;
(1) major diameter steel cylinder vibration sinking, China does not also have ready-made technical standard, standard and rules available.A large amount of technical problems will be passed through well-designed and meticulous preparation, and constantly finds, studies, solves in the practice of work progress, constantly sums up and improves;
(2) major parameter of selection vibrating hammer---the calculating of vibration frictional resistance, though collected national various computational methods such as Japan, France, the U.S., Holland and the former Soviet Union, but its result of calculation is quite different, can only be with reference to domestic and international relevant computational methods, judge voluntarily by us, in practice check;
(3) the choice of equipment difficulty is very big, selects abroad, and any family does not guarantee that shaking of this engineering sink successfully, and costs an arm and a leg; Select domesticly, have more significantly tentative; Rent the APE hammer group that entrance of Changjiang River waterway construction Co., Ltd introduces, it is the heavy diameter 12.0m steel concrete large cylinder that shakes specially, and the steel cylinder of the heavy diameter 13.5m that shakes will carry out bigger scrap build, and very big technical risk is arranged;
(4) the APE hammer group of the heavy diameter 12.0m steel concrete large cylinder that shakes successfully is transformed into the heavy diameter 13.5m steel cylinder hammer group of shaking, still belongs to the first at home and abroad;
(5) Fanyu Pu Zhou sea wall bank protection work complicated geology, 40 steel cylinders will pass the thick burning into sand layer of 1.6m～10.6m, wherein the piece stone interlayer of particle diameter 5cm～30cm, bed thickness 0.4m～6.3m will pass through in 6 steel cylinder places, and how to shake sinks to design elevation, and great difficulty is arranged;
(6) in 40 steel cylinders, greater than 50%, how embedded depth the maximum 31.9m controls the stack shell verticality to embedded depth the above person of 20.0m, and selecting for use at the operating technology of the heavy technology involving vibrations hammer group of shaking and technological parameter all has great difficulty.
U.S.'s hydraulic vibration driver group and vibration system are transformed, adopted the auxilliary walking beam that adds to adjust length, increase rigidity, solve the barrel off-centre problem of being shaken, make the vibration-sunk of same vibrational system applicable to the different-diameter cylinder.
400 type hydraulic vibration driver groups are that entrance of Changjiang River waterway construction Co., Ltd introduces from U.S. APE company.This system equipment detail is the table of face as follows, and wherein suspension bracket, bracing frame (beam) provide the technical design drawing by APE company, is responsible for technological design and processing and manufacturing by a boat office and one company of a boat office.Under APE engineer's guidance, assemble in the Yangtze Estuary Deepwater Channel Regulation Project job site by a boat office and a company.
This complete equipment is waters and northern wall NIIC bid section near horizontal sand island, successively does the heavy test of shaking of 5 steel concrete large cylinders.This steel concrete large cylinder diameter 12.0m, high 22.2m.
Test shows that it is successful introducing this complete equipment.Our decision is rented this complete equipment and be used for Nansha, Fanyu Pu Zhou sea wall bank protection work after being transformed.
Vibrating hammer and corollary equipment thereof
Vibrating hammer and corollary equipment such as table 1.1
Vibrating hammer and corollary equipment table 1.1 thereof
| In proper order | Title | Specification | Unit | Quantity | Weight (t) | Remarks |
| 1 | Hydraulic vibration driver | APE400 | Platform | 4 | 17×4＝68 | |
| 2 | The power cabinet | APE990 | Cover | 4 | 11×4＝44 | Every cover contains a CAT3412 EDITA type diesel motor, four main pumps, a chuck pump, a coolant pump, a fuel tank and an |
| 3 | Hydraulic chuck | Part | 8 | 3×8＝24 | ||
| 4 | Hydraulic oil pipe | Cover | 4 | |||
| 5 | The mechanical synchronization system | Cover | 1 | |||
| 6 | Monitoring system | Cover | 1 | |||
| 7 | Bearing support | Cover | 1 | 35 | ||
| 8 | Suspension bracket | Cover | 1 | 21 | ||
| 9 | The suspension bracket steel wire buckle | Cover | 1 | 6 |
The vibrating hammer system
Former vibrating hammer system, as shown in Figure 1, among the figure: 1 suspension bracket steel wire buckle, 2 suspension brackets, 3 mechanical synchronization systems, 4 supporting beams (frame), 5 hydraulically operated fixtures (head).
Vibrating hammer group basic mechanical design feature
Vibrating hammer (every)
Eccentric moment 150kg.m
Vibration frequency 400～1400cpm (infinitely variable speeds)
Peak swing (zero load) 27mm
Maximum uplift force 2224KN
Maximum centrifugal force 3203KN
Deadweight (not comprising chuck, oil pipe) 16363kg
Length * wide * high 3607mm * 660mm * 2515mm
Power cabinet (every cover)
Power 990HP
Maximum functional rotating speed 2100rpm
Maximum drive pressure 310bar (31Mpa)
Drive flow 943lpm (Liter Per Minute)
Length * wide * high 4724mm * 2083mm * 2440mm
2422 liters of hydraulic oil container volumes
Hydraulic chuck (every cover)
Jaw pressure 2200KN
Maximum pressure 5000psi (344bar)
Folder teeth size 172mm (vertical direction) * 230mm (horizontal direction)
The transformation of vibrating hammer system
The selection of modification scheme
It is heavy that the steel concrete large cylinder of diameter 12.0m in the wall NIIC bid section test section of Yangtze Estuary Deepwater Channel Regulation Project north shakes, employing be the vibrational system that four APE400 type hydraulic vibration drivers are formed.Change it into adapt to diameter 13.5m steel cylinder sinking equipment, difficulty is very big.We are in line with rigorous scientism, and are well-designed, propose a plurality of schemes, and are optimized under the principle that technology is reliable, the duration must protect, cost is minimum.
The supporting beam of scheme high 1.4m of an auxilliary adaptation 13.5m diameter under former supporting beam.Remain unchanged more than the former supporting beam, hydraulically operated fixture is pulled down from former supporting beam, be assembled on the new supporting beam that adapts to diameter 13.5m.Former, new supporting beam closely sticks together with bolt, forms an integral body (electric welding easily produces distortion and stress is concentrated, so the two can not the electric welding connection).As calculated, under the new and old supporting beam acting in conjunction, when shaking heavy steel cylinder, the middle 4.3mm of distortion downwards, two ends are 0, rigidity is better; There is the distortion of downward 2.4mm at the supporting beam two ends when extricating oneself from a predicament and brace oneself up to action the steel cylinder, and there is the upwards distortion of 1.6mm the centre.The distortion of both of these case does not influence the heavy steel cylinder that shakes, and this scheme is adopted in decision.
The making and the assembling of new supporting beam
(1) design of new supporting beam
Former supporting beam is that the American designs, and we makes, and this transformation is that we design voluntarily and make.The principle of design:
1. the assembling position of two hydraulic chucks on new supporting beam under each hammer is accurately necessary;
2. former new supporting beam must firmly combine as a whole;
3. must not weld any member on the former supporting beam, in case the original system distortion.
(2) making of new bearing support
Go up according to this principle, new supporting beam is seen attached Fig. 2. among the figure: 1 suspension bracket steel wire buckle, 2 suspension brackets, 3 mechanical synchronization systems, 4 supporting beams (frame), 5 hydraulically operated fixtures (head), 6 new supporting beams (frame).
The making difficult point of new supporting beam:
1. outer profile size 14.68m * 14.68m, the heavy 68t of beam belongs to the super large machined piece, guarantees that each size is accurate, and the top and bottom planeness meets former, new supporting beam assembling requirement, and difficulty is very big;
2. new, former supporting beam is connected with 152 bolts, and 8 hydraulic chuck places of its Central Plains bearing support are connected 88 with new bearing support, are connected 64 at center, centre and beam-ends former, new supporting beam; In addition, at new supporting beam-ends need hole 96 of mantle fibers of 8 hydraulic chucks are installed.Guarantee 152 bolts, the successful connection in 96 silk holes, difficulty is very big.
Designed detailed manufacture craft and the tolerance of a cover for this reason, during making, the strict execution.
(3) assembling of new supporting beam
Each procedure is rigid in checking up during making, after integral body machines, critical size and planeness is detected one by one on a special platform with fine measuring instrument, assembles with former supporting beam after the acceptance(check).Master operation is:
1. on former, new supporting beam, hydraulic chuck and connecting bolt are numbered;
2. by 2 hydraulic chucks (two hydraulic chucks are arranged under the hammer) relative size, do one and can spacingly can regulate the chuck mold of plan-position again, and hang at next group hydraulic chuck place of former supporting beam;
3. the hydraulic chuck bolt that comes loose one by one, with hydraulic chuck by theoretical fixed size in the chuck mold;
4. checking the number successively hangs mold under new supporting beam, with bolt hydraulic chuck is fixed on the new supporting beam;
5. after 4 groups of hydraulic chucks are assembled respectively, with the 500t crane ship former vibrational system is hung on new supporting beam, at new two beam-ends heads of bearing support one side, the opposite jin of direction is set does not respectively fall,, be provided with to beam center jack at new two beam-ends heads of supporting beam opposite side in order to horizontally rotate positioning, in order to adjust new supporting beam advance and retreat position, careful like this, several times former, new bearing support is tightly sticked together up and down repeatedly, 152 bolt hole centerings penetrate bolt and tighten one by one;
Because reasonable in design, manufacture craft is meticulous, and assembling sequence is correct, and the beginning of the nonstandard workpiece of the domestic same industry is created in a successful connection of former, new supporting beam 152 bolts.After the APE president of a company sees, be profuse in praise.Vibrational system after the assembling is seen Fig. 2. 4 the hydraulic vibration driver system drawings in Fanyu.
By collecting domestic and international interrelated data and analysis of project example demonstration, consider the characteristics of vibration-sunk operating mode, the piling coefficient of current specifications is revised, as the foundation of choosing hammer, and the steel cylinder depth estimation new method of drowning oneself has been proposed.Through facts have proved, comparatively reasonable, for similar engineering provides experience, for relevant specification has accumulated valued data.
The calculating of vibration frictional resistance
The calculating of the vibration side friction of vibration steel cylinder, the present domestic similar design specifications of still not having, the theory of computation is according to incomplete again, roughly the same engineering can reference, reliable for guaranteeing engineering in technology, economical rationality and assurance duration, we consult and have collected a large amount of interrelated data both at home and abroad, and priority and domestic Beijing establishment mechanical investigations institute (the technology authority unit of domestic design vibrating hammer), external French PTC S. A., the ICE company of the U.S., the technician of producers such as Japan transportation province, with this project is example, just how to calculate the vibration frictional resistance and select vibrating hammer and hammer group, it is conscientious to have carried out repeatedly, careful investigation, after through using 11 kinds of different computational methods both at home and abroad, after the analytic demonstration, the piling coefficient that we utilize China's standard to provide is considered vibration operating mode characteristics again, will be between " quiet ", piling coefficient between " vibration " multiply by the soil coefficient of elasticity that is subjected to vibration effect again, and the moving side friction of the steel cylinder of calculating is 800t～1000t, as the foundation of choosing hammer.Select representative 4# and 32# tube position to utilize various method result of calculation to list in table 3.2.1.
The moving frictional resistance summary sheet table 3.2.1 that different calculation methods draws
The estimation of the degree of depth of drowning oneself
Facts have proved that by Fanyu engineering heavy steel cylinder that shakes the estimation of the degree of depth of drowning oneself does not have practical significance.One shakes to satisfy that to be sink to design elevation be prerequisite when selecting the hammer group, what do not influence to shake and are sink to the result of design elevation so drown oneself; Its two, for preventing offsetting be tilted in the process of drowning oneself the crane ship gib head and load all the time, the gib head when finishing of drowning oneself also has the power of hanging of 110t～150t, be actually slowly press with the part gravity of the heavy system of shaking heavy.The process of drowning oneself be actually shake heavy before under measuring apparatus is controlled, careful location and anti-inclination process.This paper lists the estimation of the degree of depth of drowning oneself at this, and purpose is the explanation how value of the moving side friction of barrel of drowning oneself.Past people is calculated the quiet limit frictional resistance value of getting not reduction when drowning oneself, Fanyu engineering has 8 tubes side friction that actual grade calculated of drowning oneself, and its value reduction coefficient approaches the pressure pile resistance coefficient that " port works technical specification " (1987) last volume P135 appendix nine is given.
8 steel cylinders of first weldering system of Fanyu are transported to earlier in the water of associating wharf apron, Nansha and deposit, and belong to the state of drowning oneself fully.The soil property of wharf apron, top are mud, and the bottom is that fine sand adds folder mud, presses the soft mud value.Calculating major parameter: the F that drowns oneself
In+outer=88.116m
2/ m, A
Point=1.34m
2, end-resistance R
y=0.9 * 30t/m
2* 1.34=36.18t.Detect from this report of engineering geological exploration, all native mud limit collateral resistance standard values of stake are 1.2t/m
2, look into the heavy resistance reduction coefficient 0.3 of standard pressure.24#～31# steel cylinder the associating wharf apron by the actual degree of depth inverse of drowning oneself go out to drown oneself the side friction value list in the table 3.2.2.
24#～31# steel cylinder side friction value table 3.2.2 that drowns oneself
In addition, it is the same with piling sinking mechanism that the steel cylinder is drowned oneself, and motion state is identical, all is under a vertical gravity effect, overcomes moving behind stake native frictional resistance and the end resistance.So when calculating was drowned oneself the degree of depth by vibrating object, available pressure pile resistance computational methods were estimated.
Solved the problem of passing bad ground prevention deflection and can rectify a deviation at any time, can accomplish " has the sinking of control.
When steel cylinder normotopia when being sink to the suspension hook lift heavy at 110t～150t, suspension hook stops to descend, and finishes and drowns oneself.Survey crew is checked cylindrical shell verticality and off normal again, in allowed band, can open hammer shake heavy.The steel cylinder shakes and hangs the power that gib head on the ship has 110t～150t all the time in the heavy process, and control gib head decrease speed, in order to inclination and the off normal in the heavy process that reduces to shake.If in the heavy process of shaking, finding has micro-off normal and inclination, can hang the speed of two gib heads on the ship by adjustment at any time and the luffing of gin pole is realized; If off normal can be under the situation of not stopping to hammer into shape above 1% o'clock greater than 10cm, gradient, stop that gib head descends and pull out in the vibration to former opening and stop hammer about the above 0.5m of the absolute altitude that shakes, by degree of tightness anchor hawser, two gib heads of lifting with face upward measure alternate repetitions such as the gin pole of bowing and carry out, until cylindrical shell verticality and off normal in allowed band, it is heavy that the errorless back startup hammer of drowning oneself again continues to shake, and stops the hammer standard until reaching.
Shake and adopt " squeezing the stone sand stake " to remove deep layer before heavy, guarantee the cylinder heavy method smoothly of shaking, have very much promotional value than chunk stone interlayer.
Survey the piece stone that boring finds to have at 6#, 7#, 17#, 27#, 28# and place, 40# tube position the thick particle diameter 5cm～30cm of 0.4m～6.3m according to benefit, formally shake and to handle before heavy, otherwise be difficult to shake heavy and easily generation off normal and inclination.Through comparing repeatedly, adopt " squeezing the stone sand stake " method to remove the piece stone interlayer at barrel place.
With the two-way control of transit location, 45 kilowatts of electric vibrating hammers sink and establish four diameter 500mm, the leading truck guide pile of long 16m, and with high 2.4m, external diameter 13.0m, the steel leading truck of internal diameter 11.6m, peace hanging on four direction pegs.The layout of leading truck is seen Fig. 3,4, among the figure: 7 leading trucks, 8 leading truck guide piles, 9 steel pipes, 10 piling bar anchor ears.
With 2 pintongs stake point alive is arranged, the steel pipe of diameter 500mm is along the leading truck outside, under transit control, with 45 kilowatts of electric vibration hammers 1. first steel pipe located the heavy piece stone interlayer that passes that shakes, piece stone is extruded onto beyond the diameter 500mm, be close to first steel pipe then and shake heavy the 2nd steel pipe in 2. locating, after passing piece stone interlayer, 1. vibrating hammer is come back to first steel pipe locates, extricate oneself from a predicament and brace oneself up to action after in steel pipe pile, irritating sand, make the sand face slightly surpass piece stone interlayer end face and get final product, also should in steel pipe, pour water, in order to the sand steel pipe that comes off, then first steel pipe shaken sink to 3. locate after, will 2. locate to irritate sand and extricate oneself from a predicament and brace oneself up to action, adopt again and again every one and jump a ground intubate, the mode of " taking a step " is irritated sand and is extricated oneself from a predicament and brace oneself up to action, and will treat along the saddle outside successively that heavy round steel barrel place piece stone squeezes to remove.
Successively 6#, 7#, 17# and 40# barrel place piece stone interlayer are squeezed away with this method, removed obstacle for tube formally shakes to sink.Facts have proved that effect is fine.27#, 28# are untreated because of having only 30cm～40cm piece stone interlayer, and actual shaking when sinking also passed more smoothly.
Development has also been used quick location and the cylinder guiding device of drowning oneself, and has shortened positioning time, has brought into play guide effect, make the location of large cylinder directly perceived, quick, accurately, orthotopic rate is high.The positioning and guiding frame is seen Fig. 5,6, and among the figure: (ship), 13 gin poles, 14 gib heads are refuted by 11 crane ships, 12 location sides, 15 vibrating hammers, 16 steel cylinders, 17 leading trucks, and 18 adjustable flexible rollers, 19 anchor hawsers, 20 ground oxen, 21 transport ship, 22 power cabinets, 23 hydraulic tubes.
Steel cylinder localization method is: the steel cylinder is placed in the leading truck of refuting location side, and inboard the refuting with location side of leading truck all has adjustable flexible roller on the termination, and the steel cylinder outer wall leans against on these three the adjustable flexible rollers; Under the control of measuring apparatus, refute by the degree of tightness of adjusting many anchor hawsers and carry out coarse positioning location side, and three adjustable flexible rollers are carefully located.Fig. 7 is adjustable flexible roller, among the figure: 24 rollers, 25 turning rollss, 26 guiding devices, 27 adjustable expansion bolts
Form vibrational system with four hydraulic vibration drivers by synchronized, vibration-sunk diameter 13.5m, height 13m～34m steel cylinder pass thicker sandstone interlayer, reach design elevation, still belong to the first at home and abroad, filled up a blank of China's marine traffic engineering construction technology.
Claims (6)
1, a kind of major diameter steel cylinder vibration sinking technology method, it is characterized in that: the steel cylinder that adopts diameter 12m～25m, height 13m～45m, adopt many hydraulic vibration drivers to form vibrational system by synchronized in steel cylinder upper port, vibration steel cylinder sinks to passing thicker sandstone interlayer.
2, major diameter steel cylinder vibration sinking technology method according to claim 1, it is characterized in that: the steel cylinder that adopts diameter 12m～13.5m, height 13m～34m, adopt four hydraulic vibration drivers to form vibrational system by synchronized in steel cylinder upper port, vibration steel cylinder sinks to passing thicker sandstone interlayer.
3, major diameter steel cylinder vibration sinking technology method according to claim 2, it is characterized in that: adopt crane ship to hang and form vibrational system by synchronized by four hydraulic vibration drivers, clamp the steel cylinder by the hydraulically operated fixture under four hydraulic vibration driver brace summers and arrive the tube position, suspension hook descends, sedimentation steel cylinder, when steel cylinder normotopia when being sink to the suspension hook lift heavy at 110t～150t, suspension hook stops to descend, and finishes and drowns oneself; Survey crew is checked cylindrical shell verticality and off normal again, in allowed band, can open hammer shake heavy; The steel cylinder shakes and hangs the power that gib head on the ship has 110t～150t all the time in the heavy process, and control gib head decrease speed, in order to inclination and the off normal in the heavy process that reduces to shake; If in the heavy process of shaking, finding has micro-off normal and inclination, can hang the speed of two gib heads on the ship by adjustment at any time and the luffing of gin pole is realized; If off normal can be under the situation of not stopping to hammer into shape above 1% o'clock greater than 10cm, gradient, stop that gib head descends and pull out in the vibration to former opening and stop hammer about the above 0.5m～1.0m of the absolute altitude that shakes, by degree of tightness anchor hawser, two gib heads of lifting with face upward measure alternate repetitions such as the gin pole of bowing and carry out, until cylindrical shell verticality and off normal in allowed band, it is heavy that the errorless back startup hammer of drowning oneself again continues to shake, and stops the hammer standard until reaching.
4, according to claim 2 or 3 described major diameter steel cylinder vibration sinking technology methods, it is characterized in that:
To the piece stone interlayer of the thick particle diameter 5cm～30cm of 0.4m～6.3m is arranged, formally shake and must handle before heavy, adopt the piece stone interlayer at " squeezing the stone sand stake " method removing barrel place:
Locate with the two-way control of transit, sink with 45 kilowatts of electric vibratings hammers and establish four diameter 500mm, the leading truck positioning supports stake of long 16m, with high 2.4m, external diameter 13.0m, the steel leading truck of internal diameter 11.6m, peace hanging in the stake of four leading truck positioning supports;
With 2 pintongs stake point alive is arranged, the steel pipe of diameter 500mm is along the leading truck outside, under transit control, with 45 kilowatts of electric vibrations hammer first steel pipe shaken heavy and pass piece stone interlayer being close to the leading truck outside, piece stone is extruded onto beyond the diameter 500mm, be close to first steel pipe then and be close to leading truck outside heavy second steel pipe that shake, after passing piece stone interlayer, vibrating hammer is come back to first steel pipe place, extricate oneself from a predicament and brace oneself up to action after in steel pipe pile, irritating sand, make the sand face slightly surpass piece stone interlayer end face and get final product, also should in steel pipe, pour water, in order to the sand steel pipe that comes off, then first steel pipe shaken sink to second steel pipe and be close to opposite side place, the leading truck outside after, second steel pipe irritated sand extricates oneself from a predicament and brace oneself up to action, adopt again and again every one and jump a ground intubate, the mode of " taking a step " is irritated sand and is extricated oneself from a predicament and brace oneself up to action, and will treat along the saddle outside successively that heavy round steel barrel place piece stone squeezes to remove.
5, according to claim 2 or 3 described major diameter steel cylinder vibration sinking technology methods, it is characterized in that: steel cylinder localization method is: the steel cylinder is placed in the leading truck of refuting location side, inboard the refuting with location side of leading truck all has adjustable flexible roller on the termination, the steel cylinder outer wall leans against on these three the adjustable flexible rollers; Under the control of measuring apparatus, refute by the degree of tightness of adjusting many anchor hawsers and carry out coarse positioning location side, and three adjustable flexible rollers are carefully located.
6, a kind of vibrating hammer system of major diameter steel cylinder vibration sinking technology method use as claimed in claim 1, it is characterized in that: under the former supporting beam of existing vibrating hammer system, assist and establish new supporting beam, on the new supporting beam hydraulically operated fixture that adapts to steel drum diameter is arranged, the former supporting beam of existing vibrating hammer system and new supporting beam closely stick together with bolt, form an integral body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03109305 CN1225590C (en) | 2003-04-04 | 2003-04-04 | Large-diameter steel cylinder vibration sinking process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03109305 CN1225590C (en) | 2003-04-04 | 2003-04-04 | Large-diameter steel cylinder vibration sinking process |
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| CN1225590C true CN1225590C (en) | 2005-11-02 |
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Cited By (3)
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| CN102444126A (en) * | 2010-09-30 | 2012-05-09 | 爱科昇株式会社 | Concrete piling system and concrete piling method |
| CN102587374A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity control process for single-tubular-pile foundation of offshore intertidal wind farm |
| CN104110019A (en) * | 2014-07-01 | 2014-10-22 | 中交一航局第一工程有限公司 | Method for installing large-diameter barrel-shaped structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102444126A (en) * | 2010-09-30 | 2012-05-09 | 爱科昇株式会社 | Concrete piling system and concrete piling method |
| CN102587374A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity control process for single-tubular-pile foundation of offshore intertidal wind farm |
| CN102587374B (en) * | 2012-03-26 | 2014-07-30 | 江苏龙源振华海洋工程有限公司 | Perpendicularity control process for single-tubular-pile foundation of offshore intertidal wind farm |
| CN104110019A (en) * | 2014-07-01 | 2014-10-22 | 中交一航局第一工程有限公司 | Method for installing large-diameter barrel-shaped structure |
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| Publication number | Publication date |
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| CN1536173A (en) | 2004-10-13 |
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