CN102953382A - Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing - Google Patents
Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing Download PDFInfo
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- CN102953382A CN102953382A CN2011102368391A CN201110236839A CN102953382A CN 102953382 A CN102953382 A CN 102953382A CN 2011102368391 A CN2011102368391 A CN 2011102368391A CN 201110236839 A CN201110236839 A CN 201110236839A CN 102953382 A CN102953382 A CN 102953382A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 92
- 239000010959 steel Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000003756 stirring Methods 0.000 title claims abstract description 27
- 239000002689 soil Substances 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims description 27
- 238000009412 basement excavation Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000005065 mining Methods 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The invention discloses a pile sinking device and a pile sinking method for a steel pipe pile by central stirring and reverse drawing. The pile sinking device comprises a main unit, a winch, a power head, a pulley, a steel wire rope and an excavating rod, wherein the winch and the power head are mounted on the main unit, the pulley is mounted at the upper end of the power head, the lower side of the power head is connected with the excavating rod, a pile cap is arranged at the lower end of the power head and is connected with the lower end of the power head, pulleys are respectively arranged on two sides of the lower end of the pile cap, the steel pipe pile is placed at the lower end of the pile cap, the excavating rod penetrates through the steel pipe pile to reach the bottom of the device, and an expanded head is arranged at the lower end of the excavating rod. The invention further provides a pile sinking method for the steel pipe pile by central stirring and reverse drawing. The method includes that a bottom soil layer is stirred and loosened by the expanded head connected to the lower end of the excavating rod; and then the steel pipe pile is reversely drawn downwards by the steel wire rope, and accordingly is pressed downwards in the loose soil layer, resistance of the soil layer is reduced, and a pile body is sunken. The pile sinking device and the pile sinking method have the advantages of safety, reliability, low cost, high benefit, zero noise, zero pollution, zero soil-squeezing, zero mud, environmental protection and the like.
Description
Technical field
Stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in the present invention relates to, be mainly used in civilian and during industrial infrastructure builds, the loading of its supporting building of steel pipe pile and various large equipment bases, make building, structure make De Genggao, so the degree of depth in the soil is squeezed in stake and the diameter of stake directly has influence on this bearing capacity.
Background technology
The pile-sinking device of existing pile tube (square pile) and pile-sinking method majority thereof are to adopt hammering method and Static piling, secondly are boring extracting soil plunging and bored pile method.1, hammering method: when the stake diameter is larger, periphery can adopt hammering method during without the resident, but exists noise large, and black smoke has again vibration during hammering, is a kind of pile-sinking method of high pollution.A lot of cities have forbidden in the center to use, and the hammer of largest domestic only has 10T at present simultaneously, and impact force is 1100 tons to the maximum.When bearing capacity can only change bored pile into greater than 1100 ton hours, therefore high ferro all is to select bored pile with large bridge pile foundation at present; 2, static pressure method: to be the deadweight that utilizes equipment be pressed into a kind of method in the soil to stake to static pressure method, but because equipment self-weight is larger, higher to site requirements, pressing-in force is limited, the hydraulic pile press of largest domestic is 800 tons at present, bearing capacity of single pile also can only be selected bored pile greater than just not adopting the method more than 400 tons.Above two kinds of pile-sinking method exist a kind of insurmountable problem, and a large amount of stakes are beaten during (pressures) bury, and the soil body is outwards expanded, and a large amount of soil compactions affect peripheral building, road and subway, tunnel and pipeline etc. can both produce cracking, displacement etc.Can only adopt bored pile so can not beat (pressure) prestress steel pile tube (square pile) in urban centre and subway limit, limit, tunnel and building compact district.3, boring extracting soil plunging: namely beat a hole with borrow equipment at former terrace first, again stake is pressed in the hole, this method can adopt at northern area, because moisture content less in the soil, the hole can be shaped, but in southern Yangtze River Delta Area, water content is higher in the soil, draw the hole and just can't be shaped, stake just can't be beaten (pressure) and be entered, and simultaneously stake is easy off normal also.When stake was longer, boring extracting soil just was difficult to carry out, and the most deeply fetches earth at present and also can only arrive about 30 meters; 4, another kind of pile foundation is the bored pile method: the method is an on the ground subdrilling hole of stake machine, in the hole, fill with again the steel bar concrete "forming column, has cost high, long in time limit, quality not only is difficult to guarantee and drilled pile but also a large amount of formation of sludges is arranged, mud is disposed and is difficult to, a large amount of mud all is disposed in the river, in the lake, in the sea, in the sewer, the size creek, sewer is stopped up by mud, government's annual cleaning sewer and creek mud expense are huge, cause great pollution, but at present on subway limit, urban centre, the river levee limit, the limit, tunnel, super highrise building, the high ferro foundation pile can only adopt the bored pile method without soil compaction when namely bearing capacity is larger.
Summary of the invention
The present invention overcomes the deficiency of above several pile-sinking method, can replace present bored pile pile-sinking method fully, make in the energy compressed steel pile tube of urban centre and stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof, the method has changed several pile-sinking method in the past, not directly stake to be beaten during (pressure) bury, but the center in stake is directly stirred soil with enlarged footing with the bottom when stake is pressed in the soil, stir the stake bottom diagram loose, the method is: bottom solum is stirred loose with being connected to the enlarged footing that excavates the bar lower end, then by wire rope with steel pipe pile counter drawing down, so that steel pipe pile presses down at looser soil layer, reduce the resistance of soil layer, realize the method that pile body sinks.
The present invention realizes like this, stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in a kind of, comprise main frame, be installed in the hoist engine on the main frame, unit head, pulley, wire rope, excavate bar, described unit head is installed on the main frame, described unit head upper end is equipped with pulley, described pulley is connected with wire rope, described wire rope is connected with hoist engine by the main frame top, described unit head below is connected with the excavation bar, described unit head lower end arranges pile cover and is connected, both sides, described pile cover lower end are respectively arranged with pulley, on the described pulley wire rope is installed, described wire rope is connected with hoist engine by the pulley that is installed on the main frame, and steel pipe pile is laid in described pile cover lower end, and described excavation bar passes steel pipe pile and arrives bottom of device.Described unit head can slide at main frame.
Described excavation bar lower end is provided with enlarged footing, described enlarged footing comprises mining head, movable sleeve, upper digging arm, lower digging arm, described movable sleeve is installed in and excavates on the bar, described movable sleeve both sides are connected with digging arm, the described upper digging arm other end and lower digging arm are flexibly connected, the described lower digging arm other end is flexibly connected with the excavation bar, described upper digging arm and lower digging arm form the diamond shaped setting, described movable sleeve can be mobile at the excavation bar, described upper digging arm and lower digging arm can freely rotate along excavating bar, evenly are provided with several digging cutters on the described lower digging arm.
Described steel pipe pile is that steel material is made.
The present invention also provides and has stirred anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in a kind of, the steps include:
Step 1, main frame are in place: with host mobility to the pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on two different angle control points;
Step 3, slotting lower first steel pipe pile;
Step 4, whether vertical with the guide rod of two transits on different both direction correction main frames, namely whether steel pipe pile is vertical;
Step 5, the excavation bar that is connected with unit head is inserted in the stake hole of steel pipe pile, steel pipe pile is withstood on the pile cover;
Step 6, first segment steel pipe pile are automatically connected in the pulley on the main frame by the hoist engine band and the pulley that is installed on the pile cover rotates, the drive pile cover moves down, formed the piling action, drive by unit head simultaneously and excavate the bar rotation, the soil action is stirred in enlarged footing expansion, soil layer stirring bottom the steel pipe pile stake is loose, and piling action and excavation bar stir native the action to carry out simultaneously, until steel pipe pile is depressed into ground;
Step 7, with unit head with excavate bar and break away from, the pulley that drives the unit head upper end by hoist engine rotates, and drives unit head up mobile, with the crawler crane second section steel pipe pile of slinging, be installed with second section in the second section steel pipe pile and excavate bar, second section is excavated bar be connected on the unit head;
Step 9, first segment steel pipe pile and second section steel pipe pile are connect by being weldingly connected;
Soil is stirred on step 11, limit, and the limit pile sinking is to the absolute altitude position;
Bar is excavated in step 12, water filling counter-rotating, and then whitewashing enlarges the stake bearing capacity at the end;
The excavation bar is withdrawed from step 13, water filling, and enlarged footing is shunk, and pile construction finishes, and the stake machine is moved to the second pile position continue construction.
The present invention has following obvious advantage and beneficial effect:
1) has low cost, high benefit, noiselessness, free of contamination characteristics;
2) in the process of piling by enlarging the loose diameter of soil layer, effectively realized carrying out smoothly of piling;
Description of drawings
Fig. 1 is the schematic diagram that stirs anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof among the present invention;
Fig. 2 is the enlarged footing structural representation that stirs anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof among the present invention.
Wherein: the 1-mining head; 2-excavates bar; The 3-movable sleeve; The upper digging arm of 4-; The 5-digging cutter; Digging arm under the 6-; The 7-main frame; The 8-hoist engine; The 9-mining head; The 10-enlarged footing; 11,14,17-pulley; 12,18-wire rope; The 13-steel pipe pile; The 15-pile cover; The 16-unit head; The jet gunniting hole of 19-.
The specific embodiment
Stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in a kind of shown in Fig. 1-2, comprise main frame 7, be installed in the hoist engine 8 on the main frame 7, unit head 16, pulley 17, wire rope 18, excavate bar 2, described unit head 16 is installed on the main frame 7, described unit head 16 upper ends are equipped with pulley 17, described pulley 17 is connected with wire rope 18, described wire rope 18 is connected with hoist engine 8 by main frame 7 tops, described unit head 16 belows are connected with excavation bar 2, described unit head 16 lower ends arrange pile cover 15 and are connected, both sides, described pile cover 15 lower end are respectively arranged with pulley 14, on the described pulley 14 wire rope 12 is installed, described wire rope 12 is connected with hoist engine 8 by the pulley 11 that is installed on the main frame 7, steel pipe pile 13 is laid in described pile cover 15 lower ends, and described excavation bar 2 passes steel pipe pile 13 and arrives bottom of device.Described unit head 16 can slide at main frame 7.
Described excavation bar 2 lower ends are provided with enlarged footing 10, described enlarged footing 10 comprises mining head 1, excavate bar 2, movable sleeve 3, upper digging arm 4, lower digging arm 6, described mining head 1 is installed in the lower end of excavating bar 2, described movable sleeve 3 is installed in and excavates on the bar 2, described movable sleeve 3 both sides are connected with digging arm 4, described upper digging arm 4 other ends and lower digging arm 6 are flexibly connected, described lower digging arm 6 other ends are flexibly connected with excavation bar 2, described upper digging arm 4 forms the diamond shaped setting with lower digging arm 6, described movable sleeve 3 can be mobile at excavation bar 2, and described upper digging arm 4 and lower digging arm 6 can freely rotate along excavating bar 2.
Evenly be provided with several digging cutters 5 on the described lower digging arm 6.Described excavation bar 2 bottoms are provided with jet gunniting hole 19.
The present invention also provides and has stirred anti-daraf(reciprocal of farad) steel pipe pile pile-sinking method in a kind of, the steps include:
Step 1, main frame 7 are in place: main frame 7 is moved to the pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on two different angle control points;
Step 3, slotting lower first steel pipe pile 13;
Step 4, whether vertical with the guide rod of two transits on different both direction correction main frames 7, namely whether steel pipe pile 13 is vertical;
Step 5, the excavation bar 2 that is connected with unit head 16 is inserted in the stake hole of steel pipe piles 13, steel pipe pile 13 is withstood on the pile cover 15;
Step 6, first segment steel pipe pile 13 are with the pulley 14 that is automatically connected in the pulley 11 on the main frame 7 and is installed on the pile cover 15 to rotate by hoist engine 8, driving pile cover 15 moves down, formed the piling action, drive by unit head 16 simultaneously and excavate bar 2 rotations, the soil action is stirred in enlarged footing 10 expansions, the soil layer stirring of 13 bottoms of steel pipe pile is loose, and piling action and excavation bar 2 stir native the action to carry out simultaneously, until steel pipe pile 13 is depressed into ground;
Step 7, with unit head 16 with excavate bar 2 and break away from, the pulley 17 that drives unit head 16 upper ends by hoist engine 8 rotates, drive unit head 16 up mobile, with the crawler crane second section steel pipe pile 13 of slinging, be installed with second section in the second section steel pipe pile 13 and excavate bar 2, second section is excavated bar 2 be connected on the unit head 16;
Step 9, first segment steel pipe pile 13 and second section steel pipe pile 13 are connect by being weldingly connected;
Soil is stirred on step 11, limit, and the limit pile sinking is to the absolute altitude position;
Bar 2 is excavated in step 12, water filling counter-rotating, and then jet gunniting hole 19 whitewashings enlarge the stake bearing capacity at the end;
It should be noted that at last: above embodiment is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this manual has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from technical scheme and the improvement thereof of the spirit and scope of invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in, comprise main frame, be installed in the hoist engine on the main frame, unit head, pulley, wire rope, excavate bar, it is characterized in that: described unit head is installed on the main frame, described unit head upper end is equipped with pulley, described pulley is connected with wire rope, described wire rope is connected with hoist engine by the main frame top, described unit head below is connected with the excavation bar, described unit head lower end arranges pile cover and is connected, both sides, described pile cover lower end are respectively arranged with pulley, on the described pulley wire rope is installed, described wire rope is connected with hoist engine by the pulley that is installed on the main frame, steel pipe pile is laid in described pile cover lower end, and described excavation bar passes steel pipe pile and arrives bottom of device, and described unit head can slide at main frame.
2. stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in according to claim 1, it is characterized in that: described excavation bar lower end is provided with enlarged footing, described enlarged footing comprises mining head, movable sleeve, upper digging arm, lower digging arm, described movable sleeve is installed in and excavates on the bar, described movable sleeve both sides are connected with digging arm, the described upper digging arm other end and lower digging arm are flexibly connected, the described lower digging arm other end is flexibly connected with the excavation bar, described upper digging arm and lower digging arm form the diamond shaped setting, described movable sleeve can be mobile at the excavation bar, described upper digging arm and lower digging arm can freely rotate along excavating bar, evenly are provided with several digging cutters on the described lower digging arm.
3. stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in according to claim 1, it is characterized in that: described steel pipe pile is that steel material is made.
4. stir anti-daraf(reciprocal of farad) steel pipe pile pile-sinking device and pile-sinking method thereof in, it is characterized in that: be divided into the following step:
Step 1, main frame are in place: with host mobility to the pile sinking position;
Step 2, stake position repetition measurement: whether correct with two transits repetition measurement stake position on two different angle control points;
Step 3, slotting lower first steel pipe pile;
Step 4, whether vertical with the guide rod of two transits on different both direction correction main frames, namely whether steel pipe pile is vertical;
Step 5, the excavation bar that is connected with unit head is inserted in the stake hole of steel pipe pile, steel pipe pile is withstood on the pile cover;
Step 6, first segment steel pipe pile are automatically connected in the pulley on the main frame by the hoist engine band and the pulley that is installed on the pile cover rotates, the drive pile cover moves down, formed the piling action, drive by unit head simultaneously and excavate the bar rotation, the soil action is stirred in enlarged footing expansion, soil layer stirring bottom the steel pipe pile stake is loose, and piling action and excavation bar stir native the action to carry out simultaneously, until steel pipe pile is depressed into ground;
Step 7, with unit head with excavate bar and break away from, the pulley that drives the unit head upper end by hoist engine rotates, and drives unit head up mobile, with the crawler crane second section steel pipe pile of slinging, be installed with second section in the second section steel pipe pile and excavate bar, second section is excavated bar be connected on the unit head;
Step 8, proofread and correct the second section steel pipe piles with two transits again and whether overlap with the first segment steel pipe pile;
Step 9, first segment steel pipe pile and second section steel pipe pile are connect by being weldingly connected;
Step 10, the welding full, the imporosity meets code requirement, passed examination, continuation is rotated by the pulley that the hoist engine band is automatically connected on the main frame second section steel pipe pile with the pulley that is installed on the pile cover, the drive pile cover moves down, and has formed the piling action, drives by unit head simultaneously and excavates the bar rotation, the soil action is stirred in enlarged footing expansion, soil layer stirring bottom the steel pipe pile stake is loose, and piling action and excavation bar stir native the action to carry out simultaneously, until the second section steel pipe pile is depressed into ground; The 3rd joint steel pipe pile or the 4th joint steel pipe pile can take above action to continue to implement;
Soil is stirred on step 11, limit, and the limit pile sinking is to the absolute altitude position;
Bar is excavated in step 12, water filling counter-rotating, and then whitewashing enlarges the stake bearing capacity at the end;
The excavation bar is withdrawed from step 13, water filling, and enlarged footing is shunk, and pile construction finishes, and the stake machine is moved to the second pile position continue construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102368391A CN102953382A (en) | 2011-08-18 | 2011-08-18 | Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102368391A CN102953382A (en) | 2011-08-18 | 2011-08-18 | Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing |
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| CN102953382A true CN102953382A (en) | 2013-03-06 |
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| CN2011102368391A Pending CN102953382A (en) | 2011-08-18 | 2011-08-18 | Pile sinking device and pile sinking method for steel pipe pile by central stirring and reverse drawing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297732A (en) * | 2015-11-12 | 2016-02-03 | 上海十三冶建设有限公司 | Slagging promoting device for ultra-thick clay layer positive-cycle cast-in-place pile and construction method of slagging promoting device |
| CN107165164A (en) * | 2017-06-29 | 2017-09-15 | 盐城市中标工程装备制造有限公司 | Pile tube sunk stake machine |
| CN107190745A (en) * | 2017-06-29 | 2017-09-22 | 盐城市中标工程装备制造有限公司 | A kind of novel tubular pile pile sinking method |
| CN110344403A (en) * | 2019-07-26 | 2019-10-18 | 北京中岩大地科技股份有限公司 | The construction method of major diameter deep-layer stirring is realized based on drop resistance mode |
| CN110777782A (en) * | 2019-11-11 | 2020-02-11 | 重庆宏工工程机械股份有限公司 | Drilling device and drilling machine convenient to put stake |
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| JP2002129557A (en) * | 2000-10-23 | 2002-05-09 | Tokyo Tokushu Kiso Kogyo:Kk | Pile burying method |
| 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 |
| CN101382040A (en) * | 2008-10-24 | 2009-03-11 | 湖南山河智能机械股份有限公司 | Large diameter pipe drilling rig while drilling |
| CN201660892U (en) * | 2010-01-11 | 2010-12-01 | 周久仁 | Static-pressure pile planting hole leading machine |
| CN201770983U (en) * | 2010-08-25 | 2011-03-23 | 方圆集团海阳起重机械有限公司 | Multifunctional piling machine |
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- 2011-08-18 CN CN2011102368391A patent/CN102953382A/en active Pending
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| JP2002129557A (en) * | 2000-10-23 | 2002-05-09 | Tokyo Tokushu Kiso Kogyo:Kk | Pile burying method |
| 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 |
| CN101382040A (en) * | 2008-10-24 | 2009-03-11 | 湖南山河智能机械股份有限公司 | Large diameter pipe drilling rig while drilling |
| CN201660892U (en) * | 2010-01-11 | 2010-12-01 | 周久仁 | Static-pressure pile planting hole leading machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297732A (en) * | 2015-11-12 | 2016-02-03 | 上海十三冶建设有限公司 | Slagging promoting device for ultra-thick clay layer positive-cycle cast-in-place pile and construction method of slagging promoting device |
| CN105297732B (en) * | 2015-11-12 | 2017-05-24 | 上海十三冶建设有限公司 | Slagging promoting device for ultra-thick clay layer positive-cycle cast-in-place pile and construction method of slagging promoting device |
| CN107165164A (en) * | 2017-06-29 | 2017-09-15 | 盐城市中标工程装备制造有限公司 | Pile tube sunk stake machine |
| CN107190745A (en) * | 2017-06-29 | 2017-09-22 | 盐城市中标工程装备制造有限公司 | A kind of novel tubular pile pile sinking method |
| CN110344403A (en) * | 2019-07-26 | 2019-10-18 | 北京中岩大地科技股份有限公司 | The construction method of major diameter deep-layer stirring is realized based on drop resistance mode |
| CN110777782A (en) * | 2019-11-11 | 2020-02-11 | 重庆宏工工程机械股份有限公司 | Drilling device and drilling machine convenient to put stake |
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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. |
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Free format text: CORRECT: APPLICANT; FROM: SHANGHAI CHENGDI CONSTRUCTION DEVELOPMENT CO., LTD. TO: SHANGHAI CHENGDI CONSTRUCTION CO., LTD. |
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Application publication date: 20130306 |