CN102383428B - Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof - Google Patents
Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof Download PDFInfo
- Publication number
- CN102383428B CN102383428B CN201110042911.7A CN201110042911A CN102383428B CN 102383428 B CN102383428 B CN 102383428B CN 201110042911 A CN201110042911 A CN 201110042911A CN 102383428 B CN102383428 B CN 102383428B
- Authority
- CN
- China
- Prior art keywords
- pile
- earth
- centrifugal
- pile tube
- drilling rod
- 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
Links
Abstract
The invention discloses middle pick reverse drawing method prestressed centrifugally pile tube (square pile) pile-sinking device, comprise main frame, the hoist engine be arranged on main frame, unit head, the case that fetches earth, pulley, wire rope, described unit head is arranged on main frame, be connected with the drilling rod that fetches earth below described unit head, described case lower end of fetching earth is connected with pile cover, centrifugal pile tube (square pile) is laid in described pile cover lower end, and the described drilling rod that fetches earth arrives bottom of device through fetch earth case and centrifugal pile tube (square pile).Present invention also offers in one and dig reverse drawing method prestressed centrifugally pile tube (square pile) pile-sinking method, first by host mobility to piling position, by fetching earth, drilling rod fetches earth, simultaneously by pile cover piling, reclaimed by the case that fetches earth while fetching earth, connect second section stake after the stake of press-in first segment, continue above step.The present invention have safety, reliable, low cost, high benefit, noiselessness, pollution-free, without soil compaction, without the advantage such as mud, environmental protection.
Description
Technical field
The present invention relates to middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof, be mainly used in civilian and industrial infrastructure construction, the loading of its supporting building of pile tube and various large equipment base, make building, structure make get Geng Gao, so the diameter that the degree of depth in soil and stake are squeezed in stake directly has influence on this bearing capacity.
Background technology
The pile-sinking device of existing prestressed centrifugally pile tube and pile-sinking method majority thereof adopt hammering method and Static piling, is secondly boring extracting soil plunging and bored pile method.1, hammering method: when stake diameter is comparatively large, periphery can adopt hammering method without during resident, but it is large to there is noise, and during hammering, black smoke has vibration again, is a kind of pile-sinking method of high pollution.A lot of city has forbidden in center to use, and the hammer of largest domestic only has 10T at present simultaneously, and impact force is 1100 tons to the maximum.Bored pile can only be changed into when bearing capacity is greater than 1100 ton hours, therefore high ferro and large bridge pile foundation are all select bored pile at present; 2, static pressure method: static pressure method utilizes the deadweight of equipment a kind of method in stake press-in soil, but because equipment self-weight is larger, higher to site requirements, pressing-in force is limited, the hydraulic pile press of current largest domestic is 800 tons, bearing capacity of single pile is greater than more than 400 tons just can not adopt the method, also can only select bored pile.Above two kinds of pile-sinking method also exist a kind of insurmountable problem, a large amount of stakes is beaten during (pressure) bury, the soil body is outwards expanded, and a large amount of soil compaction affects the building of periphery, road and subway, tunnel and pipeline etc. can produce cracking, displacement etc.So (pressure) prestressed centrifugally pile tube can not be beaten at center, city and subway limit, limit, tunnel and building compact district can only adopt bored pile.3, boring extracting soil plunging: namely first use borrow equipment at original place Ping Shangdagedong, again in stake press-in hole, this method can adopt at northern area, because moisture content less in soil, hole can be shaped, but in southern Yangtze River Delta Area, in soil, water content is higher, draw hole just cannot be shaped, stake just cannot be beaten (pressure) and be entered, and stake is simultaneously easy off normal also.When stake is longer, boring extracting soil is just difficult to carry out, and the most deeply fetching earth at present also can only to about 30 meter, 4, another kind of pile foundation is bored pile method: the method is a stake machine subdrilling hole on the ground, steel bar concrete "forming column is filled with again in hole, there is cost high, long in time limit, quality is difficult to not only ensure and drilled pile but also have a large amount of mud to produce, mud is disposed and is difficult to, a large amount of mud is all disposed in river, in lake, in the sea, in sewer, size creek, sewer is blocked by mud, government clears up sewer every year and creek mud expense is huge, cause great pollution, but at present on subway limit, center, city, river levee limit, limit, tunnel, super highrise building, high ferro foundation pile, namely bored pile method can only be adopted without soil compaction when bearing capacity is larger.
Summary of the invention
The present invention overcomes the deficiency of above several pile-sinking method, current bored pile pile-sinking method can be replaced completely, middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and the pile-sinking method thereof of centrifugal pile tube can be pressed in Shi Shi center, the method changes several pile-sinking method in the past, not directly stake is beaten during (pressure) bury, but directly with auger, soil is taken out at the center of stake while stake is pressed in soil, the soil of taking-up is reclaimed by collection box simultaneously, the method is: with being connected to the wire rope fetched earth on case lower end pulleys and pulley and the pulley be connected on main frame support, utilize main frame from reusing hoist engine downward for wire rope reverse drawing in pile tube press-in soil.
The present invention is achieved in that middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device, comprise main frame, be arranged on the hoist engine on main frame, unit head, fetch earth case, pulley, wire rope, described unit head is arranged on main frame, described unit head upper end is provided with pulley, described pulley is connected with wire rope, described wire rope is connected with hoist engine by main frame top, be connected with the drilling rod that fetches earth below described unit head, described periphery, unit head lower end is provided with screening soil suite, described screening soil suite lower end is connected with the case that fetches earth, described screening soil suite mainly plays and prevents soil from falling down from the case that fetches earth, hide soil suite can stretch simultaneously, described case lower end of fetching earth is connected with pile cover, described both sides, case lower end of fetching earth are respectively arranged with pulley, centrifugal pile tube is laid in described pile cover lower end, the described drilling rod that fetches earth is through case and the centrifugal pile tube arrival bottom of device of fetching earth, described unit head and the case that fetches earth can slide on main frame.
Adopt the pile-sinking method of middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device as above, be divided into the following step:
Step one, main frame are in place: by host mobility to pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on different two Angle ambiguity points;
Step 3, slotting lower first centrifugal pile tube;
Whether step 4, the guide rod corrected on main frame in different both directions with two transits be vertical, and namely whether centrifugal pile tube is vertical;
Step 5, the drilling rod that fetches earth be connected with unit head is inserted in the stake holes of centrifugal pile tube, centrifugal pile tube is withstood on pile cover;
The centrifugal pile tube of step 6, first segment is automatically connected in the pulley on main frame by hoist engine band and is arranged on the pulley rotation fetched earth on case, drive pile cover moves down, define piling action, drive the drilling rod that fetches earth to rotate by unit head simultaneously, by fetching earth, drilling rod fetches earth, and piling action is carried out, until centrifugal pile tube is depressed into ground with action of fetching earth simultaneously, then at the soil taking out in case and taken out by the drilling rod that fetches earth that fetches earth, stack to one side or car outward transport;
Step 7, unit head and the drilling rod that fetches earth to be departed from, the pulley rotation of unit head upper end is driven by hoist engine, unit head is driven up to move, to sling the centrifugal pile tube of second section with crawler crane, be installed with second section in the centrifugal pile tube of second section to fetch earth drilling rod, the drilling rod that fetched earth by second section is connected on unit head;
Step 8, correct the centrifugal pile tubes of second section with two transits again and whether overlap with the centrifugal pile tube of first segment;
Step 9, centrifugal for first segment pile tube and the centrifugal pile tube of second section to be connect by being weldingly connected;
Step 10, weld full, imporosity, meet code requirement, passed examination, continue centrifugal for second section pile tube to be automatically connected in the pulley on main frame by hoist engine band and to be arranged on the pulley rotation fetched earth on case, drive pile cover moves down, define piling action, drive the drilling rod that fetches earth to rotate by unit head simultaneously, by fetching earth, drilling rod fetches earth, and piling action is carried out, until centrifugal for second section pile tube is depressed into ground with action of fetching earth simultaneously, then at the soil taking out in case and taken out by the drilling rod that fetches earth that fetches earth, stack to one side or car outward transport; Section three, centrifugal pile tube or Section of four centrifugal pile tube take above action to continue to implement;
Step 11, limit digging, limit pile sinking, to elevation location;
Step 12, water filling reversion fetch earth drilling rod, and then whitewashing expands the bearing capacity at the bottom of stake;
Step 13, water filling exit the drill bit that fetches earth, and a pile construction terminates, and stake machine is moved to the second pile position and continues construction.
The present invention has following obvious advantage and beneficial effect:
1) there is low cost, high benefit, noiselessness, free of contamination feature;
2) by the case that fetches earth, soil is collected, embody the civilization degree of construction, guarantee the safety of construction, the feature of environmental protection;
3) by while digging by centrifugal pile tube, achieve without soil compaction, without mud.
Accompanying drawing explanation
Fig. 1 is the side schematic view of digging reverse drawing method prestressed centrifugally pile tube pile-sinking device in the present invention;
Fig. 2 is the connection diagram of the elevational element of digging reverse drawing method prestressed centrifugally pile tube pile-sinking device in the present invention.
Wherein: 1-main frame; 2-hoist engine; 3-unit head; 4-hides soil suite; 5-fetches earth case; 6,7,8-pulley; 9,10-wire rope; The centrifugal pile tube of 11-; 12-fetches earth drilling rod; 13-pile cover.
Detailed description of the invention
Reverse drawing method prestressed centrifugally pile tube pile-sinking device is dug as shown in Figure 1-2 in one, comprise main frame 1, be arranged on the hoist engine 2 on main frame, unit head 3, fetch earth case 5, pulley 6, 7, 8, wire rope 9, 10, described unit head 3 is arranged on main frame 1, described unit head 3 upper end is provided with pulley 6, described pulley 6 is connected with wire rope 9, described wire rope 9 is connected with hoist engine 2 by main frame 1 top, be connected with the drilling rod 12 that fetches earth below described unit head 3, described periphery, unit head 3 lower end is provided with and hides soil suite 4, described screening soil suite 4 lower end is connected with the case 5 that fetches earth, described screening soil suite 4 mainly plays and prevents soil from falling down from the case 5 that fetches earth, hide soil suite 4 can stretch simultaneously, described case 5 lower end of fetching earth is connected with pile cover 13, described both sides, case 5 lower end of fetching earth are respectively arranged with pulley 7, described pulley 7 is provided with wire rope 10, described wire rope 10 is connected with hoist engine 2 by the pulley 8 be arranged on main frame 1, centrifugal pile tube 11 is laid in described pile cover 13 lower end, the described drilling rod 12 that fetches earth arrives bottom of device through fetch earth case 5 and centrifugal pile tube 11.Described unit head 3 and the case 5 that fetches earth can slide on main frame 1.
Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking method, the steps include:
Step one, main frame are in place: main frame 1 is moved to pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on different two Angle ambiguity points;
Step 3, slotting lower first centrifugal pile tube 11;
Whether step 4, the guide rod corrected on main frame in different both directions with two transits be vertical, and namely whether centrifugal pile tube 11 is vertical;
Step 5, the drilling rod 12 that fetches earth be connected with unit head 3 is inserted in the stake holes of centrifugal pile tube 11, centrifugal pile tube 11 is withstood on pile cover 13;
The centrifugal pile tube 11 of step 6, first segment is with the pulley 8 that is automatically connected on main frame by hoist engine 2 and is arranged on the pulley 7 fetched earth on case 5 and rotates, pile cover 13 is driven to move down, define piling action, drive the drilling rod 12 that fetches earth to rotate by unit head 3 simultaneously, by fetching earth, drilling rod 12 fetches earth, and piling action is carried out, until centrifugal pile tube 11 is depressed into ground with action of fetching earth simultaneously, then at the soil taking out in case 5 and taken out by the drilling rod 12 that fetches earth that fetches earth, stack to one side or car outward transport;
Step 7, unit head 3 and the drilling rod 12 that fetches earth to be departed from, the pulley 6 of unit head 3 upper end is driven to rotate by hoist engine 2, unit head 3 is driven up to move, to sling the centrifugal pile tube 11 of second section with crawler crane, be installed with second section in the centrifugal pile tube 11 of second section to fetch earth drilling rod 12, the drilling rod 12 that fetched earth by second section is connected on unit head 3;
Step 8, correct the centrifugal pile tubes of second section 11 with two transits again and whether overlap with the centrifugal pile tube 11 of first segment;
Step 9, centrifugal for first segment pile tube 11 and the centrifugal pile tube 11 of second section to be connect by being weldingly connected;
Step 10, weld full, imporosity, meet code requirement, passed examination, continue centrifugal for second section pile tube 11 to be automatically connected in the pulley 8 on main frame by hoist engine 2 band and to be arranged on the pulley 7 fetched earth on case 5 to rotate, pile cover 13 is driven to move down, define piling action, drive the drilling rod 12 that fetches earth to rotate by unit head 3 simultaneously, by fetching earth, drilling rod 12 fetches earth, piling action is carried out with action of fetching earth simultaneously, until centrifugal for second section pile tube 11 is depressed into ground, then at the soil taking out in case 5 and taken out by the drilling rod 12 that fetches earth that fetches earth, stack to one side or car outward transport, section three, centrifugal pile tube 11 or Section of four centrifugal pile tube 11 can take above action to continue to implement,
Step 11, limit digging, limit pile sinking, to elevation location;
Step 12, water filling reversion fetch earth drilling rod 12, and then whitewashing expands the bearing capacity at the bottom of stake;
Step 13, water filling exit the drill bit 12 that fetches earth, and a pile construction terminates, and stake machine is moved to the second pile position and continues construction.
Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technical scheme described in the invention; Therefore, although this manual with reference to each above-mentioned embodiment to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent to replace; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. in, dig reverse drawing method prestressed centrifugally pile tube pile-sinking device, comprise main frame, be arranged on the hoist engine on main frame, unit head, fetch earth case, pulley, wire rope, it is characterized in that: described unit head is arranged on main frame, described unit head upper end is provided with pulley, described pulley is connected with wire rope, described wire rope is connected with hoist engine by main frame top, be connected with the drilling rod that fetches earth below described unit head, described periphery, unit head lower end is provided with screening soil suite, described screening soil suite lower end is connected with the case that fetches earth, described case lower end of fetching earth is connected with pile cover, described both sides, case lower end of fetching earth are respectively arranged with pulley, centrifugal pile tube is laid in described pile cover lower end, the described drilling rod that fetches earth is through case and the centrifugal pile tube arrival bottom of device of fetching earth, described unit head and the case that fetches earth can slide on main frame.
2. adopt the pile-sinking method of middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device as claimed in claim 1, it is characterized in that: be divided into the following step:
Step one, main frame are in place: by host mobility to pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on different two Angle ambiguity points;
Step 3, slotting lower first centrifugal pile tube;
Whether step 4, the guide rod corrected on main frame in different both directions with two transits be vertical, and namely whether centrifugal pile tube is vertical;
Step 5, the drilling rod that fetches earth be connected with unit head is inserted in the stake holes of centrifugal pile tube, centrifugal pile tube is withstood on pile cover;
The centrifugal pile tube of step 6, first segment is automatically connected in the pulley on main frame by hoist engine band and is arranged on the pulley rotation fetched earth on case, drive pile cover moves down, define piling action, drive the drilling rod that fetches earth to rotate by unit head simultaneously, by fetching earth, drilling rod fetches earth, and piling action is carried out, until centrifugal pile tube is depressed into ground with action of fetching earth simultaneously, then at the soil taking out in case and taken out by the drilling rod that fetches earth that fetches earth, stack to one side or car outward transport;
Step 7, unit head and the drilling rod that fetches earth to be departed from, the pulley rotation of unit head upper end is driven by hoist engine, unit head is driven up to move, to sling the centrifugal pile tube of second section with crawler crane, be installed with second section in the centrifugal pile tube of second section to fetch earth drilling rod, the drilling rod that fetched earth by second section is connected on unit head;
Step 8, correct the centrifugal pile tubes of second section with two transits again and whether overlap with the centrifugal pile tube of first segment;
Step 9, centrifugal for first segment pile tube and the centrifugal pile tube of second section to be connect by being weldingly connected;
Step 10, weld full, imporosity, meet code requirement, passed examination, continue centrifugal for second section pile tube to be automatically connected in the pulley on main frame by hoist engine band and to be arranged on the pulley rotation fetched earth on case, drive pile cover moves down, define piling action, drive the drilling rod that fetches earth to rotate by unit head simultaneously, by fetching earth, drilling rod fetches earth, and piling action is carried out, until centrifugal for second section pile tube is depressed into ground with action of fetching earth simultaneously, then at the soil taking out in case and taken out by the drilling rod that fetches earth that fetches earth, stack to one side or car outward transport; Section three, centrifugal pile tube or Section of four centrifugal pile tube take above action to continue to implement;
Step 11, limit digging, limit pile sinking, to elevation location;
Step 12, water filling reversion fetch earth drilling rod, and then whitewashing expands the bearing capacity at the bottom of stake;
Step 13, water filling exit the drill bit that fetches earth, and a pile construction terminates, and stake machine is moved to the second pile position and continues construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110042911.7A CN102383428B (en) | 2011-02-23 | 2011-02-23 | Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110042911.7A CN102383428B (en) | 2011-02-23 | 2011-02-23 | Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102383428A CN102383428A (en) | 2012-03-21 |
| CN102383428B true CN102383428B (en) | 2015-12-09 |
Family
ID=45823229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110042911.7A Active CN102383428B (en) | 2011-02-23 | 2011-02-23 | Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102383428B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131567A (en) * | 2013-05-02 | 2014-11-05 | 上海城地建设股份有限公司 | Novel waterstop prefabricated centrifugal rectangular pile retaining structure and construction method thereof |
| CN107882017A (en) * | 2016-09-30 | 2018-04-06 | 上海城地建设股份有限公司 | The building enclosure and construction method that prefabricated components are combined with stirring wall |
| CN106638548A (en) * | 2016-10-24 | 2017-05-10 | 中国民航机场建设集团公司 | Sinking tubular gravel pile machine |
| CN108265707A (en) * | 2016-12-30 | 2018-07-10 | 上海城地建设股份有限公司 | One kind can the multi-functional middle pick of tuning fetch earth and plant stake device and its construction method |
| CN112030968A (en) * | 2020-08-28 | 2020-12-04 | 江苏原土建筑设计有限公司 | Novel construction process for solving holding pressure pile sinking difficulty |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1685113A (en) * | 2002-09-30 | 2005-10-19 | 三谷石产株式会社 | Internal excavation method through pile, and foundation pile structure |
| CN2921107Y (en) * | 2006-04-03 | 2007-07-11 | 李德进 | Deep-layer stirring core-inserting pile machine |
| CN101382040A (en) * | 2008-10-24 | 2009-03-11 | 湖南山河智能机械股份有限公司 | Major diameter drill while drilling and casing |
| CN201660892U (en) * | 2010-01-11 | 2010-12-01 | 周久仁 | Static-pressure pile planting hole leading machine |
| CN202017208U (en) * | 2011-03-04 | 2011-10-26 | 上海城地建设发展有限公司 | Center digging reverse drawing method pile driving device for pre-stress centrifuge pipe pile and square pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4671143B2 (en) * | 1999-04-13 | 2011-04-13 | 三谷セキサン株式会社 | Pile hole drilling head and pile hole drilling method |
-
2011
- 2011-02-23 CN CN201110042911.7A patent/CN102383428B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1685113A (en) * | 2002-09-30 | 2005-10-19 | 三谷石产株式会社 | Internal excavation method through pile, and foundation pile structure |
| CN2921107Y (en) * | 2006-04-03 | 2007-07-11 | 李德进 | Deep-layer stirring core-inserting pile machine |
| CN101382040A (en) * | 2008-10-24 | 2009-03-11 | 湖南山河智能机械股份有限公司 | Major diameter drill while drilling and casing |
| CN201660892U (en) * | 2010-01-11 | 2010-12-01 | 周久仁 | Static-pressure pile planting hole leading machine |
| CN202017208U (en) * | 2011-03-04 | 2011-10-26 | 上海城地建设发展有限公司 | Center digging reverse drawing method pile driving device for pre-stress centrifuge pipe pile and square pile |
Non-Patent Citations (1)
| Title |
|---|
| 《中掘工法和旋转埋设法埋入式桩》;沈保汉;《施工技术》;20010831;第30卷(第8期);第43-45页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102383428A (en) | 2012-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102776884B (en) | In stir and rotate prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof | |
| CN102383431B (en) | Middle pick prestressed centrifugally pile tube pile-sinking device and pile sinking method thereof | |
| CN103132908B (en) | Device for drilling rock and embedding rock-socketed prestressed pipe pile by down-hole hammer and construction method of device | |
| CN102383428B (en) | Middle pick reverse drawing method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof | |
| CN204199335U (en) | A kind of pressure release well reducing PHC tube pile construction soil compaction effect | |
| CN101851922B (en) | Method for eliminating underground anchor rope/rod by using all casing drill | |
| CN102373706B (en) | Middle pick hydraulic method prestressed centrifugally pile tube pile-sinking device and pile-sinking method thereof | |
| CN102373705A (en) | Pile sinking device and method for outer digging pre-stressed centrifugal pipe pile and square pile | |
| CN103321244A (en) | Construction method for additionally arranged basement in existing building on sand foundation | |
| CN106120789A (en) | The interior pile sinking process boring vibration PHC tube pile of major diameter | |
| CN102808407B (en) | Construction method of soft-foundation reinforced concrete cast-in-place pile | |
| CN1488818A (en) | Jacketed disc pile and piling method, extruding-expanding device, pile sinking machine and use | |
| CN103572770B (en) | A kind of stake case hydraulic structures and construction method thereof | |
| CN104947664A (en) | Thick stone sea-filling layer prestressing force high-strength concrete square pile construction method | |
| CN214245694U (en) | Pile forming system for large-diameter cast-in-situ bored pile in karst area | |
| CN103397634A (en) | Anchoring construction method for fastener steel tube pile cofferdam | |
| CN102953382A (en) | Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing | |
| CN111749231A (en) | Double-sleeve double-drive full-rotation pile forming device and pile forming process | |
| CN106930274A (en) | The a full set of cylinder rotatory boring castinplace pile construction method that a kind of reinforcing bar cage location is fixed | |
| CN102758434B (en) | Middle pick prestressed centrifugally pile tube pile-sinking device and pile sinking method thereof | |
| CN102373708B (en) | Anchor method prestressed centrifugally pile tube and square sunk pile device and pile-sinking method thereof are drawn in middle pick | |
| CN202017208U (en) | Center digging reverse drawing method pile driving device for pre-stress centrifuge pipe pile and square pile | |
| CN102953381A (en) | Out-mixing pile driving device and method for steel pipe piles | |
| CN109113054A (en) | A kind of reclaimation area complex geological condition cast-in-situ bored pile multimachine combined construction method | |
| CN212612466U (en) | Special geological pile foundation construction equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 200000, B, Lane 518, Lane 1, Heng Yong Road, Shanghai, Jiading District 502-1 Applicant after: Shanghai Chengdi Construction Co., Ltd. Address before: 200000 room 1, building 188, 126 Nanan Road, Anting Town, Shanghai, Jiading District Applicant before: Shanghai Chengdi Construction Development Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHANGHAI CHENGDI CONSTRUCTION DEVELOPMENT CO., LTD. TO: SHANGHAI CHENGDI CONSTRUCTION CO., LTD. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200000, B, Lane 518, Lane 1, Heng Yong Road, Shanghai, Jiading District 502-1 Patentee after: Shanghai chengdixiangjiang Data Technology Co., Ltd Address before: 200000, B, Lane 518, Lane 1, Heng Yong Road, Shanghai, Jiading District 502-1 Patentee before: SHANGHAI CHENGDI CONSTRUCTION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |