CN107059852B - Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like - Google Patents

Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like Download PDF

Info

Publication number
CN107059852B
CN107059852B CN201710307182.0A CN201710307182A CN107059852B CN 107059852 B CN107059852 B CN 107059852B CN 201710307182 A CN201710307182 A CN 201710307182A CN 107059852 B CN107059852 B CN 107059852B
Authority
CN
China
Prior art keywords
platform
construction
equipment
floating body
pile forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710307182.0A
Other languages
Chinese (zh)
Other versions
CN107059852A (en
Inventor
郭少龙
鹿群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Chengjian University
Original Assignee
Tianjin Chengjian University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Chengjian University filed Critical Tianjin Chengjian University
Priority to CN201710307182.0A priority Critical patent/CN107059852B/en
Publication of CN107059852A publication Critical patent/CN107059852A/en
Application granted granted Critical
Publication of CN107059852B publication Critical patent/CN107059852B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

The working platform comprises a liftable platform frame, a floating body, a platform lifting device and a water inlet and drainage system; the floating body is internally divided into a plurality of closed compartments, and the upper end and the lower end of the upright post which can be extended up and down are respectively fixed with the lifting platform frame and the floating body; the lifting type platform frame is provided with a steel rail and a platform plate, a trolley for placing pile forming equipment is placed on the steel rail, the platform plate is arranged on the periphery of the lifting type platform frame, and four corners of the platform plate are respectively provided with a ship moving device and an anchoring device; the platform lifting device is arranged at the top of the floating body; the water inlet and drainage system comprises a submersible pump and a valve, and the valve is arranged in the floating body. The device can be used when the water depth of a construction area is too shallow, can perform CDM method construction, can also perform pile type construction such as bored piles and the like, and has low construction cost.

Description

Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like
Technical Field
The utility model belongs to the field of soft soil foundation reinforcement, and particularly relates to equipment and a construction process for pile forming construction of fields such as beach, newly dredged fill and the like.
Background
At present, pile forming equipment and technology for land soft soil sites are quite mature, and the technology comprises a cement soil mixing pile method, a high-pressure jet grouting pile method, a drilling filling pile method and the like, and the matched equipment comprises a cement soil mixing pile machine, a high-pressure jet grouting pile machine, a drilling filling pile machine and the like. However, pile forming equipment and technology under special conditions such as mud flat, fresh dredger fill and the like are still immature, and still in a development stage, the conventional soft soil foundation reinforcing equipment and technology on land cannot be directly used.
Chinese patent 200920148175.1 and 200910131622.7 disclose a lifting type base CDM working platform ship and construction process, which can be used for carrying out water CDM construction on the fields such as beach. But the following disadvantages exist: 1. construction can only be performed in a region where the water depth allows the working platform to float, and the working platform cannot be used when the water depth of a construction region is always too shallow. 2. Only CDM method construction can be performed, but pile type construction such as bored pile cannot be performed. (3) The waste iron ship cannot be used as the floating body, and the cost is high.
Disclosure of Invention
The utility model aims to provide equipment for pile forming construction in fields such as beach and newly dredged fill, which can be used when the water depth of a construction area is too shallow, can perform CDM method construction and pile type construction such as bored pile and has low construction cost.
Another object of the present utility model is to provide a construction process of the above-mentioned equipment for pile-forming construction in fields such as beach and newly dredged fill.
The technical scheme of the utility model is as follows: a be used for mud flat, newly dredger fill etc. place pile forming construction equipment which characterized in that: the working platform comprises a liftable platform frame, a floating body, a platform lifting device and a water inlet and drainage system; the floating body is internally divided into a plurality of closed compartments, and the upper end and the lower end of the upright post which can be extended up and down are respectively fixed with the lifting platform frame and the floating body; the lifting type pile forming device comprises a lifting type platform frame, a steel rail, a platform plate, a pile forming device, a ship moving device, a mooring device, a cable guide, a winch and two anchors, wherein the steel rail and the platform plate are arranged on the lifting type platform frame; the platform lifting device is arranged at the top of the floating body; the water inlet and drainage system comprises a submersible pump and a valve, and the valve is arranged in the floating body.
The construction process for the equipment for the construction of the mud flat and the newly dredger fill pile is characterized by comprising the following steps of: the method comprises the following steps:
(1) the working platform marks in place: positioning the working platform by a guide mark pair arranged on a bank slope;
(2) bottom seat and positioning of a working platform:
after the platform is aligned and positioned, a valve in the floating body is opened, the floating body is filled and submerged, the valve is closed after the working platform is stably seated, a platform lifting device is started again to enable a liftable platform frame to be lifted along the upright post, the whole structure is locked after the preset elevation is reached, the working platform is formed, and then the piling equipment is positioned after the positioning deviation is checked by the measurement of the total station on the shore;
(3) pile machine positioning and pile forming construction:
after the pile forming equipment is in place, the construction of cement-soil mixing piles or other types of piles is carried out, and the pile forming equipment can horizontally move in the longitudinal direction and the transverse direction on the platform during construction;
(4) platform displacement:
when the working platform is constructed in a region where the water depth allows the working platform to float, after the pile construction of one region is completed, starting a submersible pump in the floating body, discharging water in the floating body to enable the platform to be in a floating state again, and starting the next ship position construction;
when the first platform is used for constructing the first construction area, the second platform is lifted to the second construction area by a crane on the first platform, the second construction platform is aligned and fixed with the first construction platform, and then the trolley where the piling equipment is located and the trolley where the crane is located are moved to the second construction area for construction.
The liftable platform frame is a 'mu' -shaped steel girder frame consisting of side longitudinal beams and cross beams.
The upright post which can stretch up and down adopts a movable sleeve, the section of the upright post is square or round, and the upright post is provided with a locking device.
The platform lifting device adopts a scissor jack or a screw jack.
The platform plate is provided with a distribution box, and the distribution box supplies power for pile forming equipment, a crane, a submersible pump and a windlass.
The first trolley is provided with a guide rail, and pile forming equipment is arranged on the guide rail.
And a second trolley for installing a crane is arranged on the steel rail.
The cross sections of the side longitudinal beams and the cross beams are groove type, H type or box type.
The utility model has the following advantages and positive effects:
1. the utility model can be used in the area where the water depth allows the working platform to float, and can also be used in the fields such as fresh dredger fill where the water depth is insufficient to support the working platform to float. When the water depth of a construction area is too shallow, the working platform cannot be shifted to another construction area through a floating state, and two identical working platforms are required to be matched for use. When the first platform is in the construction area I, the second platform is lifted to the second construction area by a crane on the first platform, the second construction platform is aligned with and fixed to the first track of the first construction platform, and then the trolley where the piling equipment is located and the trolley where the crane is located are moved to the second platform to construct the second construction area.
2. The utility model can be used for pile type construction such as cement soil mixing piles, high-pressure jet grouting piles, bored piles and the like.
3. The utility model can use the waste iron ship as the floating body, and has lower cost.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a top view of the present utility model.
Fig. 3 is a schematic view of a jack.
Fig. 4 is a schematic view of a vertically telescoping mast.
Fig. 5a-e are schematic views of construction process of equipment for mud flat and newly dredged fill piling construction when the water depth of the construction area is too shallow.
In the figure: 1-a floating body; 2-stand columns; 3-a liftable platform frame; 4-locating pins; 5-side stringers; 6, a cross beam; 7-jack; 8-steel rail; 9-a platform plate; 10-a cable guide; 11-a windlass with a windlass anchor; 12-a first trolley; 13-a guide rail; 14-piling equipment; 15-a second trolley; 16-crane; 17-a submersible pump; 18-valve; 19-distribution box.
The specific embodiment is as follows:
as shown in fig. 1-4: a pile-forming construction equipment for fields such as beach and newly dredged fill is composed of a lifting platform frame, a floating body, a platform lifting device and a water inlet and drainage system.
The floating body can be formed by welding steel plates or by reforming a waste iron ship and is divided into a plurality of closed compartments.
The vertical column 2 which can be extended and retracted up and down is fixedly connected between the floating body 1 and the liftable platform frame 3, the vertical column adopts a movable sleeve pipe mode, the section is square or round, and the vertical column is provided with a positioning pin 4 which can lock the platform frame when the platform frame is lifted to a certain height.
The liftable platform frame 3 is a 'mesh' -shaped steel girder frame formed by side stringers 5 and cross beams 6, and the cross sections of the side stringers 5 and the cross beams 6 are groove-shaped, H-shaped or box-shaped and the like. The liftable platform frame 3 is provided with a steel rail 8 and a platform plate 9, the platform plate 9 is arranged on the periphery of the platform frame and can be used for operators to walk, the platform plate adopts an embossed steel plate and can play a role of skid resistance, four corners of the platform plate 9 are respectively provided with a ship moving device and an anchoring device, the device comprises a cable guider 10, a winch 11 and two anchors arranged in sea, and the device and two mooring piles arranged on the shore form a splayed cable system respectively. The first trolley 12 is placed on the steel rail 8, the first trolley can translate on the steel rail 8, the first trolley 12 is provided with a guide rail 13, the guide rail 13 is provided with pile forming equipment 14, meanwhile, the second trolley 15 is also placed on the steel rail 8, and the second trolley is provided with a crane 16 (if the water depth of a construction area meets the floating movement of a working platform, the second trolley 15 and the crane 16 are not required).
The pile forming equipment comprises a cement soil mixing pile machine, a high-pressure jet grouting pile machine, a drilling filling pile machine and the like. The cement paste required for piling by the piling device can be provided by a conveying device from a cement paste making and conveying system arranged on land, or a cement paste mixer and a conveying device which are independent are arranged on a working platform. The cement slurry conveying system comprises a cement slurry stirrer and a conveying pump.
The platform lifting device is arranged at the top of the floating body and adopts a scissor type or screw jack 7.
The water inlet and outlet system comprises a submersible pump 17 and a valve 18, and the valve 18 is arranged at the lower part of the floating body 1.
The platform plate 9 is also provided with a distribution box 19, and the distribution box 19 supplies power for the pile forming equipment 14, the crane 16, the water pump 17 and the windlass 10.
The construction process of the equipment for constructing the mud flat and the newly dredged fill pile is as follows:
1. the working platform marks in place:
the working platform is positioned by a guide mark pair mark arranged on a bank slope;
2. bottom seat and positioning of a working platform:
after the platform is aligned and positioned, a valve 18 in the floating body 1 (a dowel bar is used for switching in a steel pipe of the upright post 2) is opened, the floating body 1 is charged and submerged, and the bottom is sat for rooting. According to the sinking speed of the floating body 1 and the floating stable state of the lifting platform ship, the irrigation speed of different compartments of the floating body can be adjusted, so that the lifting is ensured to enable the platform ship to stably sink in a balanced manner. After the working platform sits stably, the water inlet gate valve 18 is closed, the jack 7 is started again, the steel beam frame 3 is lifted along the upright post 2, and after the preset elevation is reached, the fixing pin 4 is inserted for locking, and the whole structure becomes the working platform. And then, measuring and checking the positioning deviation by using an onshore total station, wherein the allowable deviation in the longitudinal and transverse directions can be 20cm. The piling machine 14 is then in place and the construction is carried out after further readiness. And (3) controlling the elevation of the pile, wherein after the steel beam frame 3 is lifted to a proper height and leveled, measuring staff measures the elevation point on the platform plate 9 by using a level gauge and the like, and marking on a drill rod to control the bottom elevation of the stirring pile.
3. Pile machine positioning and pile forming construction:
after the piling machine 14 is in place, construction of cement-soil mixing piles or other types of piles is carried out, and the piling machine 14 can horizontally move on a platform in the longitudinal direction and the transverse direction during construction. When the first trolley moves to the left side of the construction platform, the second trolley can be used for placing weights to play a balance role, so that the unstable gravity center of the construction platform is prevented.
If cement paste is needed during pile forming, the cement paste can be provided by conveying equipment from a cement paste manufacturing and conveying system arranged on land, and also can be provided by arranging an independent cement paste stirrer and conveying equipment on a working platform.
The power supply can be connected to the ship from shore power through a cable, and an independent diesel generator set can be arranged on the working platform to supply power to pile forming machinery and the like.
4. Platform displacement:
when the working platform is constructed in a region where the water depth allows the working platform to float, after the pile construction of one region is completed, the submersible pump 17 in the floating body 1 is started, the water in the floating body 1 is discharged, the platform is in a floating state again, and the next ship position construction is started.
When the working platform is constructed in an area with too shallow water depth, after the pile construction in one area is completed, the working platform cannot be shifted to another construction area through a floating state, and at the moment, two identical working platforms are required to be matched for use, and a construction process schematic diagram is shown in fig. 5 a-e. When the first platform is constructed in the first construction area, the second platform is hoisted to the second construction area by a crane on the first platform, the second construction platform is aligned with and fixed to the first track of the first construction platform, and then the first trolley 12 where the piling device 14 is located and the second trolley 15 where the crane is located are moved to the second platform to construct the second construction area.

Claims (6)

1. A construction process for equipment for pile forming construction of a mud flat and a newly dredged fill site is characterized in that: the construction process is suitable for equipment for pile forming construction of a beach and a newly dredged fill site, and the equipment working platform comprises a liftable platform frame, a floating body, a platform lifting device and a water inlet and drainage system; the floating body is internally divided into a plurality of closed compartments, and the upper end and the lower end of the upright post which can be extended up and down are respectively fixed with the lifting platform frame and the floating body; the lifting type pile forming device comprises a lifting type platform frame, a steel rail and a platform plate, wherein a first trolley used for placing pile forming equipment and a second trolley used for installing a crane are arranged on the steel rail, a guide rail is arranged on the first trolley, pile forming equipment is arranged on the guide rail, the platform plate is arranged on the periphery of the lifting type platform frame, and ship moving and anchoring devices are respectively arranged at four corners of the platform plate; the platform lifting device is arranged at the top of the floating body; the water inlet and drainage system comprises a submersible pump and a valve, the valve is arranged in a floating body, and the construction process of the equipment comprises the following steps:
(1) the working platform marks in place: positioning a working platform and a guide mark on a bank slope;
(2) bottom seat and positioning of a working platform:
after the platform is aligned and positioned, a valve in the floating body is opened, the floating body is filled and submerged, the valve is closed after the working platform is stably seated, a platform lifting device is started again to enable a liftable platform frame to be lifted along the upright post, the whole structure is locked after the preset elevation is reached, the working platform is formed, and then the piling equipment is positioned after the positioning deviation is checked by the measurement of the total station on the shore;
(3) pile machine positioning and pile forming construction:
after the pile forming equipment is in place, the construction of cement-soil mixing piles or other types of piles is carried out, and the pile forming equipment can horizontally move in the longitudinal direction and the transverse direction on the platform during construction;
(4) platform displacement:
when the working platform is constructed in a region where the water depth allows the working platform to float, after the pile construction of one region is completed, starting a submersible pump in the floating body, discharging water in the floating body to enable the platform to be in a floating state again, and starting the next ship position construction;
when the first working platform is used for lifting the second working platform to the second construction area, the second working platform is aligned and fixed with the first working platform, and then the first trolley where the piling equipment is located and the second trolley where the crane is located are moved to the second construction area for construction after the second working platform is lifted to the second construction area by the crane on the first working platform after the first working platform is constructed.
2. The construction process for equipment for pile forming construction of a beach, a newly dredger fill site according to claim 1, wherein: the liftable platform frame is a 'mu' -shaped steel girder frame consisting of side longitudinal beams and cross beams.
3. The construction process for equipment for pile forming construction of a beach, a newly dredger fill site according to claim 1, wherein: the upright post which can stretch up and down adopts a movable sleeve, the section of the upright post is square or round, and the upright post is provided with a locking device.
4. The construction process for equipment for pile forming construction of a beach, a newly dredger fill site according to claim 1, wherein: the platform lifting device adopts a scissor jack or a screw jack.
5. The construction process for equipment for pile forming construction of a beach, a newly dredger fill site according to claim 1, wherein: the platform plate is provided with a distribution box, and the distribution box supplies power for pile forming equipment, a crane, a submersible pump and a windlass.
6. The construction process for equipment for piling construction of a beach, a newly dredged fill site according to claim 2, wherein: the cross sections of the side longitudinal beams and the cross beams are groove type, H type or box type.
CN201710307182.0A 2017-05-04 2017-05-04 Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like Active CN107059852B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710307182.0A CN107059852B (en) 2017-05-04 2017-05-04 Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710307182.0A CN107059852B (en) 2017-05-04 2017-05-04 Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like

Publications (2)

Publication Number Publication Date
CN107059852A CN107059852A (en) 2017-08-18
CN107059852B true CN107059852B (en) 2024-03-08

Family

ID=59597632

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710307182.0A Active CN107059852B (en) 2017-05-04 2017-05-04 Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like

Country Status (1)

Country Link
CN (1) CN107059852B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115258063B (en) * 2022-05-12 2024-01-09 中国水利水电第十二工程局有限公司 Construction method for concrete pipe pile on tidal flat with rising and falling tide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7413413A (en) * 1973-10-12 1975-04-15 Doris Dev Richesse Sous Marine WEAVED ISLAND FOR INSTALLATIONS AT SEA.
CN101538854A (en) * 2009-04-10 2009-09-23 中交一航局第二工程有限公司 Mudflat CDM method soft foundation reinforcement technology
CN201390367Y (en) * 2009-04-10 2010-01-27 中交一航局第二工程有限公司 Lifting sit-on-bottom CDM construction method operation platform ship
CN101736741A (en) * 2009-12-15 2010-06-16 三一电气有限责任公司 Amphibious pile driver
CN102080370A (en) * 2009-11-27 2011-06-01 三一电气有限责任公司 Foundation construction platform for intertidal zone or offshore zone
CN102839666A (en) * 2012-09-05 2012-12-26 三一集团有限公司 Bottom-supported floating pile-driving platform

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7413413A (en) * 1973-10-12 1975-04-15 Doris Dev Richesse Sous Marine WEAVED ISLAND FOR INSTALLATIONS AT SEA.
CN101538854A (en) * 2009-04-10 2009-09-23 中交一航局第二工程有限公司 Mudflat CDM method soft foundation reinforcement technology
CN201390367Y (en) * 2009-04-10 2010-01-27 中交一航局第二工程有限公司 Lifting sit-on-bottom CDM construction method operation platform ship
CN102080370A (en) * 2009-11-27 2011-06-01 三一电气有限责任公司 Foundation construction platform for intertidal zone or offshore zone
CN101736741A (en) * 2009-12-15 2010-06-16 三一电气有限责任公司 Amphibious pile driver
CN102839666A (en) * 2012-09-05 2012-12-26 三一集团有限公司 Bottom-supported floating pile-driving platform

Also Published As

Publication number Publication date
CN107059852A (en) 2017-08-18

Similar Documents

Publication Publication Date Title
CN107542101B (en) Construction method of offshore four-buoy-buoyancy tank combined foundation structure
CN111945767B (en) Construction process of pile-first outer jacket type jacket of offshore wind power booster station
CN109356210A (en) A kind of pile foundation building inclination rectification cuts stake and underpins position limiting structure and its construction method
CN105625425A (en) Construction method for carrying out pile sinking based on floating walking platform
CN107514006A (en) It is a kind of to build island operation construction method for shallow sea or shallow river bridge foundation
CN209243794U (en) A kind of pile foundation building inclination rectification cuts stake and underpins position limiting structure
CN103114612A (en) Single pile vertical uplift static loading testing device
CN102268871A (en) Construction method of turnover platform for underwater pile foundation of bridge
CN112854267B (en) Construction method of high-fall deepwater rock-socketed foundation
CN106812144A (en) Double-wall steel cofferdam construction method
CN105155602A (en) Multi-support foundation strengthening comprehensive controlling method
CN108642987A (en) A kind of sandy soil liquefied foundation processing method
CN208152052U (en) Steel sheet pile underground structure of controllable deformation
CN111576247A (en) Double-wall steel cofferdam and short pile casing group integral positioning and mounting structure and construction method
CN104790423B (en) A kind of large-scale transmission tower is combined and expands top bored concrete pile foundation
CN109707002B (en) Device and method for accurately positioning, sinking and installing large water intake head
CN107059852B (en) Equipment and construction process for pile forming construction of fields such as beach, newly dredged fill and the like
CN101148888B (en) Compressed-air caisson anchor pile automatic error correcting device
CN210684426U (en) Bare rock steel trestle in deep water
CN110004934B (en) Excavation construction method for silt foundation pit
CN111119181A (en) Pile head cutting method for underwater concrete pile construction
CN109972644A (en) Pushing tow open caisson device and its construction method
CN113882421A (en) Offshore wind power generation gravity type foundation and installation method
US2935854A (en) Offshore drilling platform
CN210031875U (en) Open caisson device for pushing

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant