CN102312436A - Steel pipe pile sinking construction technology - Google Patents
Steel pipe pile sinking construction technology Download PDFInfo
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- CN102312436A CN102312436A CN2010102161762A CN201010216176A CN102312436A CN 102312436 A CN102312436 A CN 102312436A CN 2010102161762 A CN2010102161762 A CN 2010102161762A CN 201010216176 A CN201010216176 A CN 201010216176A CN 102312436 A CN102312436 A CN 102312436A
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Abstract
A steel pipe pile sinking construction technology relates to the construction technology of the engineering construction field, and comprises the following working steps: measurement paying off, pile driving boat positioning, pipe pile hoisting, and pile pitching and hammering. The measurement paying off step comprises mine sweeping and measurement before construction; construction material preparation; and construction boat preparation and technical disclosure. The pile driving boat positioning step comprises pile driving boat approaching and pile driving boat anchoring and positioning. The pipe pile hoisting step comprises pipe pile hoisting positioning and pile sinking error measurement and adjustment. The pile pitching and hammering step comprises steel pipe pile pitching and hammering and completion acceptance. The steel pipe pile sinking construction technology has high construction efficiency, good processing quality, less defective parts, small verticality deviation, and is applicable to various field constructions, so the required precision of engineering construction is satisfied.
Description
Technical field:
The present invention relates to the construction technology of engineering construction field, be specifically related to a kind of steel pipe pile piling construction technology.
Background technology:
Along with the continuous development of sea fishery and shipbuilding industry, increasingly high to the port infrastructure construction requirements.The appearance in kiloton berth, ten thousand tons of berths makes that the port works task is huge, and carries the foundation stone of this huge task---the steel pipe pile basis is particularly important.Steel pipe pile is widely used in harbour Foundation Designs such as harbour, mole, shore protection, building berth, and the steel pipe pile monkey is gone into the seabed certain depth, directly bears the corrosion of the load and the seawater of superstructure, and is therefore relatively strict to its quality requirement.Taking proper construction technology and job practices to make steel pipe pile is the prerequisite that guarantees workmanship.Boundless sea, The turbulent river crashes its way through, and pile driving barge is pile sinking at sea, not only need solve the direction orientation problem of carrying out a bit plane coordinate setting and taper pile under the SEA LEVEL VARIATION condition fast, also will in pile driving process, monitor stake top mark height by real time dynamic tracing.And big sea can not be as land-based area the cloth numerous SURVEYING CONTROL NETWORK in position of setting up an office, and conventional land-based area measures that to net its Surveying Control Point can only be one-sidedly from the continent to stretch out, and can't reach the required precision of bridge engineering construction at all.
Summary of the invention:
The purpose of this invention is to provide a kind of steel pipe pile piling construction technology, its efficiency of construction is high, crudy is good, part defect is few, and perpendicularity deviation is little, is applicable to the construction of various places, satisfies the required precision of engineering construction.
In order to solve the existing problem of background technology, the present invention adopts following technical scheme: it comprises following job step: measure that unwrapping wire, pile driving barge are in place, pile tube lifting, pitching pile and hammering.
Described measurement unwrapping wire step comprises sweeps sea, the preceding measurement of worker; Construction material is prepared; The workboat machine is prepared and is confided a technological secret.
Described pile driving barge step in place comprises that pile driving barge marches into the arena and the pile driving barge location of casting anchor.
Described pile tube lifting step comprises that the steel pipe pile lifting is in place and measures adjustment pile sinking error.
Described pitching pile with beat step and comprise that inserting of steel pipe pile beat and completion acceptance.
Efficiency of construction of the present invention is high, crudy is good, part defect is few, and perpendicularity deviation is little, is applicable to the construction of various places, satisfies the required precision of engineering construction.
Description of drawings:
Fig. 1 is an overall work step structure chart of the present invention,
Fig. 2 is a construction flow chart of the present invention,
Fig. 3 is pile sinking setting-out structure of process figure among the present invention,
Fig. 4 is a job site of the present invention structure chart,
Fig. 5 is the parameter list of three, single pile and six schemes in the specific embodiment,
Fig. 6 is the type selecting table of workboat machine equipment in the specific embodiment,
Fig. 7 is the type selecting table of pile sinking equipment in the specific embodiment,
Fig. 8 is the parameter list of pile sinking equipment in the specific embodiment,
Fig. 9 is that the Numerical control cutting parts size precision requires table in the specific embodiment.
The specific embodiment:
With reference to Fig. 1-6, this specific embodiment adopts following technical scheme: it comprises following job step: measure that unwrapping wire, pile driving barge are in place, pile tube lifting, pitching pile and hammering.
Described measurement unwrapping wire step comprises sweeps sea, the preceding measurement of worker; Construction material is prepared; The workboat machine is prepared and is confided a technological secret.
Described pile driving barge step in place comprises that pile driving barge marches into the arena and the pile driving barge location of casting anchor.
Described pile tube lifting step comprises that the steel pipe pile lifting is in place and measures adjustment pile sinking error.Described pitching pile with beat step and comprise that inserting of steel pipe pile beat and completion acceptance.
The concrete steps of this specific embodiment are following:
One, the foundation of Surveying Control Point and construction coordinate system: before the commencement of works; SURVEYING CONTROL NETWORK point and bench mark to the owner provided carry out repetition measurement; And submit a report asking for the supervising engineer and check and accept approval, utilize total powerstation to draw survey on this basis, set up the construction Survey Control coordinate system of this engineering.
This engineering coordinate system is: the Beijing coordinate system system; Elevation system is: 85 national Yellow Sea Datums.According to the original control point that the owner provides, adopt total powerstation on embankment, to lay Surveying Control Point by the first-order traverse requirement.Lay vertical control point by third-class measurement of the level requirement.The control point lay to be accomplished submitting a report asking for to manage and can be used after checking approval.
The control of pile foundation plan-position and elevation: construction period, pile sinking waterborne location is intended and is adopted the GPS navigation system to carry out measurement and positioning, adopts the T2 transit to measure check.The composition of GPS measuring system: terrestrial reference station and cell site, pile driving barge GPS accept navigation system, pile body scanning system etc.For this reason, utilize chopped-off head to measure the site before the construction and set up 6502MK (double frequency RTK) GPS Global Positioning System receiving station, three 6502MK (double frequency RTK) the GPS Global Positioning System receiver that utilizes on the pile driving barge to be installed positions control.
Control accuracy is: the plan-position is that 10mm+0.5ppm, plane error are generally less than 5cm; Elevation is that 10mm+0.5ppm, vertical error are generally less than 5cm, and above-mentioned precision satisfies design and code requirement fully.
The setting out method of steel pipe pile: 1, the setting-out of pile sinking: aboard ship the selected A in appropriate location, 2 of D are provided with the RTK rover station.If C is the position of pile body lower end on the piling leading truck.When piling, make C point and design stake position C
IfOverlap, because A, D have fixing geometrical relationship with C, when making the azimuth of A-C be certain value again, then the coordinate of A, D is also confirmed thereupon, claims the position A of A, D at this moment
If, D
IfFor establishing corresponding design attitude with C.Otherwise, when hull is pressed A
If, D
IfDuring the location, then the C point must with C
IfOverlap.2, the concrete setting-out of steel pipe pile pile sinking: before the work beginning, the same C that calculated in advance is good
IfCorresponding A
If, D
IfThe coordinate of point is imported respectively in the RTK handbook on A, the D point and is set sail as navigation data indication pile driving barge.According to the handbook screen display and the distance, delta S design point position that A, D are ordered, the adjustment hull makes Δ S＜5cm, and fastening anchor chain is completely fixed hull.For guaranteeing the correct of RTK staking out result, total powerstation is set being positioned on certain known point of sea wall in addition, go out distance, azimuth by the C coordinate Calculation of setting up an office.After determining C with RTK, place the total powerstation prism before the pile hammer work, check.To be determined errorless after, just begin the construction.Adopt plumb line inspection pile body verticality in the piling process.
Two, the shipment of steel pipe pile and transportation: 1) shipment: in the shipment process, Quality Inspector's sync check is arranged, and whether the check handling member of finally going on board is consistent with the shipment figure that on-the-spot project management department requires, and meets the standard of zero tolerance.When stake dress, adopt the multiple spot chock, fulcrum must keep at grade, and takes anti-down reliably, non-skid feature, pile tube and support must be set, and fastening with rope, prevent rolling.2) transportation: this specific embodiment pile tube ships that transport is paid the utmost attention to and is adopted the self-propulsion type barge with deck as the pile tube cargo ship, the relative towage tugboat of the type ship loading pile tube aft dr shallow draft.Ships that transport construction period plan is equipped with 1 1000 anchor ship, 1 transportation that the 2000t member is refuted.And will in time increase tugboat and refute according to on-the-spot pile sinking actual conditions with the side.And, in time increase tugboat and refute with the side according to on-the-spot pile sinking actual conditions.
Three, piling construction: pile sinking equipment choosing: with reference to Fig. 7; To above stake type: Φ 1900mm, Φ 4300mm steel pipe pile construction process are identical; But during construction capital equipment is required difference, all adopt flat barge with deck water transport, adopt the 250T crawler crane to hang stake to the job site.
Process for sinking: this specific embodiment adopts vibrating hammer to combine special-purpose leading truck technology to carry out pile sinking; During piling construction; Steel pipe pile adopts large-scale crawler crane lifting (stake is terminal during the pile tube lifting adopts special-purpose coaster to cooperate lifting), perhaps increases a 50T crawler crane and cooperates lifting.This specific embodiment adopts special-purpose leading truck, and steady stake after vibration hammer is inserted and beaten steel pipe pile, stops hammering into shape and adopts absolute altitude control on the standard guidelines.At any time check the pile body verticality in the pile driving process, find that perpendicularity deviation adopts the jack adjustment pile body verticality on the leading truck.
The steel pipe pile pile sinking is noted main points: before a, the pile sinking capital equipment parts such as leading truck, pile monkey, dynamic power machine and power circuit of pile driving barge are comprehensively checked, guaranteed the continuity in the piling process.To adjust the verticality of stake before b, the pile sinking, when piling, should guarantee to check at any time the verticality of pile tube.C, open want the scrutiny pile monkey before the hammer, replace beat with the axis whether consistent, in time correct if any off normal.D, stake will be checked the verticality of pile body after squeezing into 3.0m the deadweight effect under and with pile monkey, as pinpoint the problems and can continue sinking after must proofreading and correct.The pile sinking work of e, every joint steel pipe pile will once sink to putting in place, in order to avoid because the recovery of soil will be difficult to sinking.F, steel pipe pile submergence depth are standard with the embedded depth of design in principle.
Pile sinking quality control: before (1), the pile sinking operation, must feel, must remove to the obstruction that hinders pile sinking to pile sinking waters underwater topography.(2), the steel pipe pile scene of the being transported to test evaluation data that should in time provide according to making side rechecks, carry out the reinspection record, and submit a report asking for the supervising engineer and check and accept.(3), must clear up the hammer cap during the every pile of lifting, keep the level and smooth no-sundries in hammer cap bottom surface.(4), the verticality that must observe pile frame before following before the survey crew, pile driving barge is in time adjusted leading truck according to the observed result of survey crew.(5), adopt following the time leading truck to do guiding, guarantee the pile body verticality.The axis of steady stake back survey crew observation pile body and pile frame can suitably be adjusted leading truck if any angle, is strictly on guard against eccentric hammering to occur.(6), the pile sinking pile penetration occurs when unusual, should stop construction immediately, through with management, design, owner's joint research can normal construction after handling.(7), pile driving barge moves ship time, should keep a close eye on the anchor hawser state, arranges anchor boat supervision on duty at the scene, avoids taking out the stake that scratching such as heart anchor hawser has been accomplished fluently.(8), pile sinking control answers adhere rigidly to design and relevant specification requirement, if note abnormalities phenomenon, should stop hammer immediately in the pile driving process, in time together with design with manage analysis and research, after adopting an effective measure, can continue pile sinking.(9), when the pile sinking off normal is above standard regulation, must suspension of works, in time submit a report asking for managements, design, can normal construction after solution is definite.
Four, hanging device: hoisting machine tool: with reference to Fig. 8, the 630T crawler crane that hanging device adopts piling or blower fan lifting special purpose ship to be equipped with is installed; The steel work transportation: the transportation of platform steel work adopts the barge with deck water transport to the job site.
Five, structure steel fabrication: (A), blanking: the blower foundation member all adopts the numerical control blanking, and the numerical control cutting stock precision is with reference to Fig. 9.
(B), the making of cylindrical shell: 1. the plate seam should be concordant during jigsaw (unfitness of butt joint should≤0.1t (thickness of slab) and≤3);
2. should carefully remove greasy dirt, corrosion and the moisture etc. on welding wire and weldment surface before the welding, to reduce the hydrogen content in the weld seam;
3. the necessary wire brushing of per pass layer is clean, and welding should be noted level thickness;
4. should be continuous for the welding of per pass weld seam, must not be interrupted, to guarantee it suitable interlayer temperature is arranged;
5. weld the little electric current of appropriate to the occasion employing and weld at many levels, the welder welds to two from the centre by even numbers, and the per pass layer can not be too big, the welding point 50mm that should stagger;
6. if environment temperature is lower than 5 ℃, should take the preheating measure, preheat temperature is 100～150 ℃;
7. weld the unlikely weld seam that other weld seams is formed rigid constraint; Should keep one of which end ability free shrink during every weld seam welding; During hand welding welded plate seam, should weld abutted seam earlier, back toe seam; By the even numbers welder from the centre progressively forwards, backwards, bilateral symmetry is carried out, with freedom and the evenly contraction that guarantees member;
8. open X type groove when steel plate splices, first dioxy back welding, with weldering automatically, the reverse side charcoal digs again.When adopting weldering automatically, should run-on tab be set with its specification of blow-out plate is about 100X100 at the two ends of plate seam, thickness and to piece together steel plate thickness suitable;
9. tripod main cylinder and last diagonal brace divide two to process with hydraulic press: 1) steel carry out clod wash and add man-hour, and the temperature of working environment must not be lower than-20 degree.2) before processing, also should mark necessary bending machining reference line, the foundation during as operation according to the curved shape of part and used processing method.3) before processing, should conscientiously check the surface quality of workpiece, remove the surface and post dirt, particularly part edge and two disconnected slag and the burrs of cutting.Number material cutter seal of sweep or ocean should place the concave surface of spares bend towards point.4) part that uses mold pressing to process must advanced line space carry pressure testing before processing, whether the installation of inspection pressing mold is correct, reliable.In process, answer running check mould set bolt whether loosening, in case die shift.When 5) carbon steel steel plate bending radius is less than 10 times of thicknesss of slab, should be in the scope in sweep ora terminalis 3-4 sesquialter footpath rounding; When thickness of slab during, 2 millimeters of roundings less than 10 millimeters, when thickness of slab more than or equal to 10 millimeters, rounding 3-4 millimeter.When the special small-bend radius of processing, should in the edges of boards margin of sweep ora terminalis, open and cut a diameter semicircle orifice that is surplus 2/3, and by above standard rounding;
In the part processing process and completion of processing after inspection, all should with processing model be as the criterion.
11. tripod main cylinder and last diagonal brace adopt the method for making that crouches to make, and are that basal plane is made with the outside plate.The concrete height of moulding bed is confirmed according to the line style setting-out, increases the outward appearance that the moulding bed template guarantees cylindrical shell simultaneously.
12. during welding, it is inner to open X type unrooted groove, outside charcoal digs, and goes out white back back welding.The available V-type groove of opening under the situation that can guarantee complete penetraction and fusion in welding, reverse side paste liner and replace.To guarantee the concentricity of cylindrical shell simultaneously.
13. the lower end of cylindrical shell and support places the surplus of 30mm, cuts off during structure fabrication.
Pipe casing is processed with bending roll machine with following horizontal brace: the 1) arc at place, cylindrical component two edges, and general inconvenience shuts out on three-roll bending machine, so before processing, can on hydraulic press, extrude (being called " flanging ") earlier, its width should be not less than 200 millimeters.Circular arc is consistent with the curvature of cylinder; 2) for enhancing productivity and crudy, can be as required in the roll-in process, use various pads to correct shape and defective such as the part of eliminating part bloats, waveform; 3) part that on hydraulic press, bends should evenly be held on the counterdie in whole pressing process; 4) press-bending of cylindrical component can not be carried out to both sides by the centre, must press the both sides arc earlier, in the middle of pressing, otherwise process can't be carried out again; 5) when the length of pressing the angle part substantially exceeds the length of dihedral pressing mold, press the angle can not once-forming, and the method that must take segmentation to suppress one by one.The angle of each bending is following:
Part press-bending hem width mm＜70 70～100 100～150 150～300＞300
Each angle＞30 ° 30 °-50 ° 25 °-20 ° 20 °-15 °＜15 ° of pressing
Simultaneously, the part that segmentation is bent, the position of one section compacting should be with the last period overlapping about 20～30 millimeters thereafter.
Six, blower fan tripod assembling: 1. the barrel member is according to figure paper structure line position line installation, and it is fixed that the leg of no specific (special) requirements comes according to routine.
2. make the construction moulding bed of tripod.The below of three pipe casings and main cylinder makes moulding bed, and the moulding bed upper surface is placed steel plate, is larger than the diameter of sleeve pipe and cylindrical shell.With the level gauge flat levelness of guaranteeing moulding bed of fetching water.
3. to note setting angle and verticality when on moulding bed, placing pipe casing and cylindrical shell.Available angle square and model are confirmed angle.In the outside of all bobbins intersection is ejected with line simultaneously, so that follow-up assembling work.
4. horizontal brace down is installed earlier, is installed diagonal brace again.To check with angular templet when installing diagonal brace.(annotate: the position of intersection wants corresponding during installation, correct the bobbin distortion)
5. the measurement of will completing after the completion, the error≤5mm between the center line of pipe casing and main cylinder.
Seven, platform lifting: (1) preparation of construction work: 1, organize each leader of teams and groups to be familiar with drawing by the person in charge of the technology aspect, have thorough grasp design idea, clear and definite fabrication and installation main points separately will be formulated relative measure, work out detailed processing technology.
2, basketry flow process.
3, the personnel of organizational technology learn drawing joint hearing summary and the design record of telling somebody what one's real intentions are, and understand design idea, the way of clear and definite keypoint part and requirement.
4, specification, size and the weight of checking supplied materials are checked.
5, prepare necessary technological equipment according to technological requirement.
6, must comprehensively check whether meet design requirement to member before the steel structure member lifting, whether complete like the member whether diameter of scantling, pattern, splicing sleeve and position etc. adhere to specification, match.Also to carry out the steel work visual inspection simultaneously: whether be out of shape, whether the surface has breakage, the paint face is whether intact etc.
7, before the steel structure member lifting, must carry out work progress intermediate structure intensity and Calculation on stability, obtain the approval of designing unit in case of necessity after, can lift.
Colligation place takes rubber or timber pad to protect when 8, lifting, and prevents damage, member scratch corrosion-inhibiting coating.Handle with care during lifting and prevent collision.Nonvoluntary reaming or perforate.
Nine, lifting is measured: 1, install and proofread and correct: set up the three school systems that install and measure: in the Steel Structure Installation process; The throwing of the setting up of reference line, plane net surveys, closed, a series of measurement preparations such as row chi, unwrapping wire and absolute altitude control are quite important; Behind hoisted in position; Just carry out the transition to calibration phase, must carry out three times after the lifting and proofread and correct by lifting.
2, carry out first revisal, confirm the dislocation value: first revisal is the control and the adjustment of center line in place.Confirm the purpose of dislocation value will guarantee that videlicet the relative connection dimension of joint adheres to specification through first revisal, consider the adjustment distortion again, the needs of comprehensive installation dimensions such as the inclined to one side absolute altitude that hangs down, guarantee size in place.
3, adjustment is hung down partially: install fastening after, steel work has had certain rigidity and certain bulk, the verticality of at this moment tackling behind the steel structure hoisting is comprehensively proofreaied and correct again.Method of correcting is the correction that pushes away or draw by jack or cucurbit, makes perpendicularity deviation reach the requirement of allowable variation.
Ten, the correction of verticality: after steel work plane axis and the veritification of level absolute altitude are qualified, row's chi unwrapping wire, hoisted in position is on the basis.Method with transit inspection verticality is the orientation axis with transit backsight lower end, and the projection of mutually perpendicular both direction center line all overlaps with orientation axis, or error thinks qualified less than the control requirement.Perpendicularity deviation is all answered strict control in fastening front and back.
11, completion acceptance.
The efficiency of construction of this specific embodiment is high, crudy is good, part defect is few, and perpendicularity deviation is little, is applicable to the construction of various places, satisfies the required precision of engineering construction.
Claims (5)
1. steel pipe pile piling construction technology is characterized in that it comprises following job step: measure that unwrapping wire, pile driving barge are in place, pile tube lifting, pitching pile and hammering.
2. steel pipe pile piling construction technology according to claim 1 is characterized in that described measurement unwrapping wire step comprises to measure before sweeping sea, worker; Construction material is prepared; The workboat machine is prepared and is confided a technological secret.
3. steel pipe pile piling construction technology according to claim 1 is characterized in that described pile driving barge step in place comprises that pile driving barge marches into the arena and the pile driving barge location of casting anchor.
4. steel pipe pile piling construction technology according to claim 1 is characterized in that described pile tube lifting step comprises that the steel pipe pile lifting is in place and measures adjustment pile sinking error.
5. steel pipe pile piling construction technology according to claim 1 is characterized in that described pitching pile and beats step comprising that the slotting of steel pipe pile beats and completion acceptance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102161762A CN102312436A (en) | 2010-07-02 | 2010-07-02 | Steel pipe pile sinking construction technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102161762A CN102312436A (en) | 2010-07-02 | 2010-07-02 | Steel pipe pile sinking construction technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587378A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity error correction technique for hydraulic impact driving of single pipe pile on sea intertidal zone |
| CN103018757A (en) * | 2012-12-10 | 2013-04-03 | 中山大学 | Monitoring and display system for position and three-dimensional attitude of floating and semi-submersible type mobile platform |
| CN106193034A (en) * | 2016-08-11 | 2016-12-07 | 四川电力建设三公司 | Photovoltaic plant spiral steel pipe pile construction method |
| CN107476271A (en) * | 2016-06-08 | 2017-12-15 | 宜兴市周铁镇生力钻探机械厂 | A kind of marine steel pipe pile sinking construction technology |
| CN108221975A (en) * | 2017-12-07 | 2018-06-29 | 浙江交工集团股份有限公司 | Marine steel pipe composite pile high-acruracy survey positioning device and application method |
| CN114657987A (en) * | 2022-04-02 | 2022-06-24 | 北京建材地质工程有限公司 | Construction method for inserting steel pipe into cement soil pile without vibration sense |
-
2010
- 2010-07-02 CN CN2010102161762A patent/CN102312436A/en active Pending
Non-Patent Citations (1)
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| 张万鹏: "浅谈钢质桩基式导管架的海上安装及注意事项", 《中国海洋平台》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587378A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity error correction technique for hydraulic impact driving of single pipe pile on sea intertidal zone |
| CN102587378B (en) * | 2012-03-26 | 2014-04-16 | 江苏龙源振华海洋工程有限公司 | Perpendicularity error correction technique for hydraulic impact driving of single pipe pile on sea intertidal zone |
| CN103018757A (en) * | 2012-12-10 | 2013-04-03 | 中山大学 | Monitoring and display system for position and three-dimensional attitude of floating and semi-submersible type mobile platform |
| CN103018757B (en) * | 2012-12-10 | 2015-04-22 | 中山大学 | Monitoring and display system for position and three-dimensional attitude of floating and semi-submersible type mobile platform |
| CN107476271A (en) * | 2016-06-08 | 2017-12-15 | 宜兴市周铁镇生力钻探机械厂 | A kind of marine steel pipe pile sinking construction technology |
| CN106193034A (en) * | 2016-08-11 | 2016-12-07 | 四川电力建设三公司 | Photovoltaic plant spiral steel pipe pile construction method |
| CN106193034B (en) * | 2016-08-11 | 2018-11-30 | 中国电建集团四川工程有限公司 | Photovoltaic plant spiral steel pipe pile construction method |
| CN108221975A (en) * | 2017-12-07 | 2018-06-29 | 浙江交工集团股份有限公司 | Marine steel pipe composite pile high-acruracy survey positioning device and application method |
| CN108221975B (en) * | 2017-12-07 | 2020-03-03 | 浙江交工集团股份有限公司 | High-precision measuring, positioning and using method for offshore steel pipe composite pile |
| CN114657987A (en) * | 2022-04-02 | 2022-06-24 | 北京建材地质工程有限公司 | Construction method for inserting steel pipe into cement soil pile without vibration sense |
| CN114657987B (en) * | 2022-04-02 | 2024-01-23 | 北京建材地质工程有限公司 | Construction method for inserting cement soil pile into steel pipe without shock sensation |
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Application publication date: 20120111 |