CN103274329B - A kind of top draws jack for the construction method of pile-anchor retaining - Google Patents
A kind of top draws jack for the construction method of pile-anchor retaining Download PDFInfo
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- CN103274329B CN103274329B CN201310211647.4A CN201310211647A CN103274329B CN 103274329 B CN103274329 B CN 103274329B CN 201310211647 A CN201310211647 A CN 201310211647A CN 103274329 B CN103274329 B CN 103274329B
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- retaining wall
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- anchor
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Abstract
The present invention relates to a kind of top and draw jack and the construction method for pile-anchor retaining thereof, this top draws jack to comprise cylinder body and be arranged on can along cylinder body piston rod in axial sliding in cylinder body, the rear end of described piston rod is fixedly connected with piston, described cylinder body comprises scuffing of cylinder bore and takes blame for others, described scuffing of cylinder bore arranged outside has scuffing of cylinder bore oil nozzle, described arranged outside of taking blame for others is taken blame for others oil nozzle, and the front end of described piston rod is connected with the adaptor union of convertible internal diameter.As preferably, the front end of described piston rod is provided with the screw rod that one section of diameter attenuates compared with piston rod, described screw rod is provided with the nut for fixed connector.The present invention also provides a kind of and draws jack to be used for the construction method of pile-anchor retaining on aforesaid top.Top of the present invention draws jack in narrow stake holes, Luoyang Spade and steel sleeve jacking can be pulled out soil layer; Construction method of the present invention can reduce the impact of excavation of foundation pit on environment.
Description
Technical field
The invention belongs to Base hole supporting technology field, be specifically related to a kind of top and draw jack and the construction method for pile-anchor retaining thereof.
Background technology
Foundation pit supporting project is the system engineering of Various Complex factor reciprocal effect, and cost is high but be generally reluctant again to drop into more fund, and the quantity that goes into operation is many, technical sophistication, and accident is frequent and have sudden, is the challenging technical difficult point of most in building engineering.Excavation pit under weak soil, phreatic high and other complex site conditions, more easily produce soil body slipping, instability of foundation pit, pile body displacement, bottom heave, retaining structure seriously leak, flow soil so that the disease such as damaged, very large threat is caused to the safety of surrounding building, underground structure and pipeline.Once there is accident, process very difficult, the economic loss caused and social influence are often very serious.
Along with the propelling of reconstruction of the old city town, the main high level in each city, high-rise building mostly concentrate on that site coverage is large, densely populated, in the narrow and small place of crowded traffic, the condition of foundation pit supporting project construction is all very poor.Contiguous often have the permanent construction and public utility that must protect, can not put slope excavation, foundation ditch is stablized and the requirement of Bit andits control very tight.
The soil-baffling structure of common pattern foundation pit supporting structure mainly contains: campshed, continuous concrete wall, EFFECT OF CEMENT STABILIZED SOIL RETAINING WALL, steel sheet pile, soil nail wall (shotcrete and rock bolt support), inverse make arch wall; The supporting construction of common pattern foundation pit supporting structure mainly contains: anchor pole, hole inner support.Anchor pole generally layering setting in Excavation Process, causes larger foundation pit deformation; Hole inner support can be arranged from ground in layering, and to foundation ditch, face sound can be very little peripherally, but hole inner structure working space is affected.
Jack is the simple weight-lifting equipment of a kind of lifting highly little (being less than 1 meter), is divided into mechanical type and fluid pressure type two kinds by propulsion source.Hydraulic jack can be divided into General hydraulic jack and dedicated hydraulic jack by purposes, and General hydraulic jack is applicable to the highly little various hoisting operations of lifting; Dedicated hydraulic jack is used for deformed bar stretch-draw, can realize tension reinforcing steel bar, piston and cylinder body backhaul, top press male cone three effect at the different parts of jack.Jack can be divided into separating jack, Horizontal jack, claw jack, synchronous jack, integral type jack, motor-driven jack, slim jack etc. by version, realize jacking weight, the department such as factories and miness, communications and transportation that is mainly used in is as Mechanical Help and other work such as lifting, support.Existing jack still can not realize in narrow stake holes Luoyang Spade and steel sleeve jacking soil layer and pull-out soil layer.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, there is provided a kind of can by Luoyang Spade and steel sleeve jacking and jack is drawn on the top pulling out soil layer in narrow stake holes, the present invention provides a kind of simultaneously and reduces the construction method of excavation of foundation pit to surrounding environment influence.
For achieving the above object, the technical solution used in the present invention is as follows.
Jack is drawn on a kind of top, comprising cylinder body and be arranged on can along cylinder body piston rod in axial sliding in cylinder body, and the rear end of described piston rod is fixedly connected with piston, and described cylinder body comprises scuffing of cylinder bore and takes blame for others, described scuffing of cylinder bore arranged outside has scuffing of cylinder bore oil nozzle, described in arranged outside of taking blame for others to take blame for others oil nozzle; The front end of described piston rod is connected with the adaptor union of convertible internal diameter.
Further, the front end of described piston rod is provided with the screw rod that one section of diameter attenuates compared with piston rod, described screw rod is provided with the nut for fixed connector.
Further, the number of described nut is two, and two described nuts are separately positioned on the both sides, front and back of described adaptor union.
Further, the inwall of described adaptor union is provided with screw thread.
Further, the outer wall of described cylinder body is provided with suspension ring.
Further, the number of described suspension ring is 4.
The top that the present invention further provides a kind of application of aforementioned draws jack to carry out the construction method of pile-anchor retaining, comprises the steps:
1) levelling of the land, special-purpose machines and tools material prepare: the facility material being exclusively used in pile-anchor retaining comprise electric block, cage, safety miner's lamp, long cylinder insulant shoes, safety cap, safety strap, diameter 25 millimeters soft coir rope, steel cat ladder, down-hole aboveground personnel agencies of liaison, blowing device, spade, pick, pneumatic pick, dress inder pot, dado template and plug and pound instrument, jack is drawn on aforesaid top, Luoyang Spade, prestressing tendon, ground tackle, anchor pole grouting equipment and material;
2) unwrapping wire fixed pile, build aperture retaining wall: survey fixed pile with theodolite and steel ruler, with timber nail iron nail mark stake position, with concreting aperture retaining wall, in retaining wall, skin is pile body crust, 200 millimeters, the projecting ground of aperture retaining wall end face;
3) borehole and panelling construction: erection bracket and electric block, dregs is hung by dress inder pot, borehole workman is hung by cage, use spade borehole, use pick and pneumatic pick if desired, dig while draw water if desired, often dig down the cleaning that 1 meter is carried out stake holes perisporium, the diameter of stake holes is checked with steel ruler, the squareness of stake holes is checked with line pendant, support dado template, pouring breast wall concrete, and stay in retaining wall relevant position and set anchor bolt construction hole and as top draw jack to pull out suspension ring that Luoyang Spade and sleeve pipe provide counter-force;
4) anchor bolt construction: draw jack jacking Luoyang Spade, steel sleeve pore-forming, retaining wall with the top described in aforementioned claim, Luoyang spade and steel sleeve are by screw thread spreading, the jacking angle of jack is drawn on the rope adjustment top that top draws jack to pass through to hang on aperture crossbeam, obtain top by the pre-buried suspension ring on pile body retaining wall and retaining wall, draw counter-force, jacking pulls out Luoyang Spade after reaching certain depth, put into anchor rod prestress muscle, grouting limit, limit pulls out steel sleeve and mends slurry and makes hole closely knit, reaches some strength post-stretching anchor rod prestress muscle and anchoring in grouting;
5) pile body reinforced concrete construction: hang pile body steel reinforcement cage, casting concrete pile;
6) retaining wall root pile construction: root pile of constructing between retaining wall reinforced concrete pile;
7) excavation of foundation pit: excavation pit after anchored pile supporting reaches some strength, and carry out foundation ditch and ambient environment deformation observation;
8) spray steel fibre reinforced concrete retaining wall: after foundation ditch is opened, spray steel fibre reinforced concrete retaining wall.
Further, step 3) described in breast wall concrete in retaining wall reinforcing bar adopt diameter to be the HPB400 of 10 millimeters, described dado template assembled arcuated punching block, the strength grade of described breast wall concrete is C20, thickness is 100 millimeters.
Further, draw the thickness of the described breast wall concrete of jack active position to be 200 millimeters at anchor pole and top, thickening scope is 300 millimeters × 300 millimeters.
Further, bolt action reduces the impact that manually digging hole is out of shape surrounding environment in retaining wall, and anchor pole provides support to reduce on reinforced concrete revetment pile the impact that excavation of foundation pit is out of shape surrounding environment by retaining wall.
The invention has the beneficial effects as follows: top of the present invention draws jack in narrow stake holes, Luoyang Spade and steel sleeve jacking can be pulled out soil layer; Construction method of the present invention can reduce the impact of excavation of foundation pit on environment, meets permanent construction that foundation ditch vicinity must protect and public utility is stablized foundation ditch and the strict demand of Bit andits control.
Accompanying drawing explanation
Fig. 1 is the structural representation that jack is drawn on top of the present invention.
Fig. 2 is that top of the present invention draws jack for the construction method diagram of circuit of pile-anchor retaining.
In figure, 1-takes blame for others, 2-scuffing of cylinder bore, and 3-takes blame for others oil nozzle, 4-scuffing of cylinder bore oil nozzle, 5-piston, 6-piston rod, 7-screw rod, 8-adaptor union, 9-first nut, 10-second nut, 11-first suspension ring, 12-second suspension ring, 13-the 3rd suspension ring, 14-the 4th suspension ring.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Top of the present invention draws jack as shown in Figure 1, comprising cylinder body and be arranged on can along cylinder body piston rod 6 in axial sliding in cylinder body, the rear end of piston rod 6 is fixedly connected with piston 5, cylinder body comprises scuffing of cylinder bore 2 and takes blame for others 1, the arranged outside of scuffing of cylinder bore 2 has scuffing of cylinder bore oil nozzle 4, take blame for others 1 arranged outside to take blame for others oil nozzle 3; The front end of piston rod 6 is provided with the screw rod 7 that one section of diameter attenuates compared with piston rod 6, screw rod 7 is provided with the first nut 9 and the second nut 10 for fixed connector 8; The inwall of adaptor union 8 is provided with screw thread (not shown); The outer wall of cylinder body is provided with the first suspension ring 11, second suspension ring 12, the 3rd suspension ring 13 and the 4th suspension ring 14.
Adaptor union 8 is fixed on screw rod 7 by the first nut 9 and the second nut 10, piston 5 and piston rod 6 are connected as a single entity, piston rod 6 end attenuates and becomes screw rod 7, adaptor union 8 inwall has screw thread, and by conversion adaptor union 8 internal diameter respectively with being threaded of Luoyang spade and steel sleeve, realize jacking and the pull-out of Luoyang spade and steel sleeve.Take blame for others oil nozzle 3 oil-feed time, jack rear portion is drawn by sleeper top on retaining wall in top, piston 5, piston rod 6, screw rod 7, adaptor union 8 and be connected to the Luoyang Spade of adaptor union 8 front portion and steel sleeve advances, and Luoyang Spade and steel sleeve are by jacking soil layer; During 4 oil-feed of scuffing of cylinder bore oil nozzle and take blame for others oil nozzle 3 oil return time, top draws jack rear portion to draw the second suspension ring 12 of jack outer wall and the 4th suspension ring 14 to be pulled on the pre-buried suspension ring of retaining wall by top, piston 5, piston rod 6, screw rod 7, adaptor union 8 and be connected to the Luoyang Spade of adaptor union 8 front portion and steel sleeve retreats, Luoyang Spade and steel sleeve are drawn out soil layer.First suspension ring 11 and the second suspension ring 12 can be used for through steel rope, jack being hung on the crossbeam in stake holes aperture.
The construction method of pile-anchor retaining of the present invention adopts reinforced concrete core-tube manually digging hole filling pile to add the foundation pit support plan of anchor pole, wherein anchor pole completes in the stake holes of manually digging hole filling pile, anchor rod prestress muscle is anchored on manually digging hole filling pile reinforced concrete core-tube, in manually digging hole filling pile stake holes, the construction of anchor pole adopts top provided by the invention to draw jack and Luoyang Spade to complete, the handle of Luoyang Spade can screw thread spreading draw jack to be connected with top, and top draws jack can realize being connected with the handle of Luoyang Spade and realizing jacking and pull-out to Luoyang Spade.Luoyang spade and steel sleeve often save 400mm, and respectively there is interior male thread at two ends.Luoyang Spade pore-forming is protected by follow-up steel sleeve, the pull-out when being in the milk of protection steel sleeve.Shotcrete protection after retaining wall inter-pile soil can adopt root pile and excavation makes it unlikelyly cave in.
Fig. 2 is that top of the present invention draws jack for the construction method diagram of circuit of pile-anchor retaining, and as shown in Figure 2, this construction method specifically comprises the steps.
1) levelling of the land, special-purpose machines and tools material prepare
The facility material being exclusively used in pile-anchor retaining comprise electric block, cage, safety miner's lamp, long cylinder insulant shoes, safety cap, safety strap, diameter 25 millimeters soft coir rope, steel cat ladder, down-hole aboveground personnel agencies of liaison, blowing device, spade, pick, pneumatic pick, dress inder pot, dado template and plug and pound instrument, jack is drawn on aforesaid top, Luoyang Spade, prestressing tendon, ground tackle, anchor pole grouting equipment and material.
2) unwrapping wire fixed pile, build aperture retaining wall
According to site plan, structural working drawing and foundation pit support construction figure, fixed pile is surveyed, with timber nail iron nail mark stake position, with concreting aperture retaining wall with theodolite and steel ruler, in retaining wall, skin is pile body crust, 200 millimeters, the projecting ground of aperture retaining wall end face.
3) borehole and panelling construction
Erection bracket and electric block, hang dregs by dress inder pot, hang borehole workman, use spade borehole by cage, use pick and pneumatic pick if desired, dig while draw water if desired; Often dig down the cleaning that 1 meter is carried out stake holes perisporium, the diameter of stake holes is checked with steel ruler, the squareness of stake holes is checked with line pendant, support dado template, pouring breast wall concrete, retaining wall reinforcing bar employing diameter is the HPB400 of 10 millimeters, described dado template assembled arcuated punching block, and the strength grade of described breast wall concrete is C20, thickness is 100 millimeters; Draw the thickness of the described breast wall concrete of jack active position to be 200 millimeters at anchor pole and top, thickening scope is 300 millimeters × 300 millimeters; And stay in retaining wall relevant position and set anchor bolt construction hole and as top draw jack to pull out suspension ring that Luoyang Spade and sleeve pipe provide counter-force.
4) anchor bolt construction
Jack jacking Luoyang Spade, steel sleeve pore-forming, retaining wall is drawn with top provided by the invention, Luoyang spade and steel sleeve are by screw thread spreading, the jacking angle of jack is drawn on the rope adjustment top that top draws jack to pass through to hang on aperture crossbeam, obtain top by the pre-buried suspension ring on pile body retaining wall and retaining wall, draw counter-force, jacking pulls out Luoyang Spade after reaching certain depth, put into anchor rod prestress muscle, grouting limit, limit pulls out steel sleeve and mends slurry and makes hole closely knit, reaches some strength post-stretching anchor rod prestress muscle and anchoring in grouting.
5) pile body reinforced concrete construction
Hang pile body steel reinforcement cage, casting concrete pile.
6) retaining wall root pile construction
To construct between retaining wall reinforced concrete pile root pile, bear earth lateral pressure between slope protection pile, ensure that bank protection inter-pile soil does not cave in.
7) excavation of foundation pit
Excavation pit after anchored pile supporting reaches some strength, and carry out foundation ditch and ambient environment deformation observation.
8) steel fibre reinforced concrete retaining wall is sprayed
After foundation ditch is opened, spray steel fibre reinforced concrete retaining wall and contribute to ensureing exposed hole wall soil body opposing wind and rain, unlikelyly to cave in.
Anchor pole and retaining wall reduce the impact that manually digging hole is out of shape surrounding environment, and anchor pole, retaining wall and reinforced concrete pile reduce the impact that excavation of foundation pit is out of shape surrounding environment.Construction method of the present invention can reduce the impact of excavation of foundation pit on environment, meets permanent construction that foundation ditch vicinity must protect and public utility is stablized foundation ditch and the strict demand of Bit andits control.
The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention; If do not depart from the spirit and scope of the present invention, the present invention is modified or equivalent to replace, in the middle of the protection domain that all should be encompassed in the claims in the present invention.
Claims (4)
1. top draws jack for a construction method for pile-anchor retaining, it is characterized in that, comprises the steps:
1) levelling of the land, special-purpose machines and tools material prepare: the facility material being exclusively used in pile-anchor retaining comprise electric block, cage, safety miner's lamp, long cylinder insulant shoes, safety cap, safety strap, the soft coir rope of diameter 25 millimeters, steel cat ladder, the aboveground personnel's agencies of liaison in down-hole, blowing device, spade, pick, dress inder pot, dado template and plug and pound instrument, jack, Luoyang Spade, prestressing tendon, ground tackle, anchor pole grouting equipment and material are drawn in top;
Described top draws jack to comprise cylinder body and be arranged on can along cylinder body piston rod in axial sliding in cylinder body, the rear end of described piston rod is fixedly connected with piston, described cylinder body comprises scuffing of cylinder bore and taking blame for others, and described scuffing of cylinder bore arranged outside has scuffing of cylinder bore oil nozzle, described in arranged outside of taking blame for others to take blame for others oil nozzle; The front end of described piston rod is connected with the adaptor union of convertible internal diameter; The front end of described piston rod is provided with the screw rod that one section of diameter attenuates compared with piston rod, described screw rod is provided with the nut for fixed connector; The number of described nut is two, and two described nuts are separately positioned on the both sides, front and back of described adaptor union; The inwall of described adaptor union is provided with screw thread; The outer wall of described cylinder body is provided with suspension ring; The number of described suspension ring is 4;
2) unwrapping wire fixed pile, build aperture retaining wall: survey fixed pile with theodolite and steel ruler, with timber nail iron nail mark stake position, with concreting aperture retaining wall, in retaining wall, skin is pile body crust, 200 millimeters, the projecting ground of aperture retaining wall end face;
3) borehole and panelling construction: erection bracket and electric block, dregs is hung by dress inder pot, hang borehole workman by cage, with spade, pick borehole, dig while draw water, often dig down the cleaning that 1 meter is carried out stake holes perisporium, check the diameter of stake holes with steel ruler, check the squareness of stake holes with line pendant, support dado template, pouring breast wall concrete, and stay in retaining wall relevant position and set anchor bolt construction hole and as top draw jack to pull out pre-buried suspension ring that Luoyang Spade and sleeve pipe provide counter-force;
4) anchor bolt construction: draw jack jacking Luoyang Spade, steel sleeve pore-forming, retaining wall with top, Luoyang spade and steel sleeve are by screw thread spreading, the jacking angle of jack is drawn on the rope adjustment top that top draws jack to pass through to hang on aperture crossbeam, obtain top by the pre-buried suspension ring on pile body retaining wall and retaining wall, draw counter-force, jacking pulls out Luoyang Spade after reaching certain depth, put into anchor rod prestress muscle, grouting limit, limit pulls out steel sleeve and mends slurry and makes hole closely knit, reaches some strength post-stretching anchor rod prestress muscle and anchoring in grouting;
5) pile body reinforced concrete construction: hang pile body steel reinforcement cage, casting concrete pile;
6) retaining wall root pile construction: root pile of constructing between retaining wall reinforced concrete pile;
7) excavation of foundation pit: excavation pit after anchored pile supporting reaches some strength, and carry out foundation ditch and ambient environment deformation observation;
8) spray steel fibre reinforced concrete retaining wall: after foundation ditch is opened, spray steel fibre reinforced concrete retaining wall.
2. construction method according to claim 1, it is characterized in that, step 3) described in breast wall concrete in retaining wall reinforcing bar adopt diameter to be the HPB400 of 10 millimeters, described dado template assembled arcuated punching block, the strength grade of described breast wall concrete is C20, thickness is 100 millimeters.
3. construction method according to claim 1, is characterized in that, draws the thickness of the described breast wall concrete of jack active position to be 200 millimeters at anchor pole and top, and thickening scope is 300 millimeters × 300 millimeters.
4. construction method according to claim 1, it is characterized in that, bolt action reduces the impact that manually digging hole is out of shape surrounding environment in retaining wall, anchor pole provides support to reduce on reinforced concrete revetment pile the impact that excavation of foundation pit is out of shape surrounding environment by retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211647.4A CN103274329B (en) | 2013-05-29 | 2013-05-29 | A kind of top draws jack for the construction method of pile-anchor retaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211647.4A CN103274329B (en) | 2013-05-29 | 2013-05-29 | A kind of top draws jack for the construction method of pile-anchor retaining |
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| Publication Number | Publication Date |
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| CN103274329A CN103274329A (en) | 2013-09-04 |
| CN103274329B true CN103274329B (en) | 2016-03-23 |
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| CN201310211647.4A Active CN103274329B (en) | 2013-05-29 | 2013-05-29 | A kind of top draws jack for the construction method of pile-anchor retaining |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284338B (en) * | 2015-06-08 | 2023-11-17 | 中铁建工集团有限公司 | Mechanical anchor nailing device for jacking anchor rods between piles by PCMW construction method and use method |
| CN108373124A (en) * | 2017-12-12 | 2018-08-07 | 柳州市建桥预应力智能设备有限公司 | Turnable jack |
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| CN2328462Y (en) * | 1998-06-11 | 1999-07-14 | 中外合资柳州欧维姆建筑机械有限公司 | Bolt fastening machine |
| JP3187752B2 (en) * | 1997-09-11 | 2001-07-11 | 株式会社ピー・エス | Nervous jack |
| CN1374246A (en) * | 2002-04-08 | 2002-10-16 | 郭正兴 | Steel bar tensing jack |
| CN101586342A (en) * | 2009-06-15 | 2009-11-25 | 中交一航局第二工程有限公司 | Caisson adopts jack to move horizontally the roof process of jacking |
| CN201952156U (en) * | 2011-01-25 | 2011-08-31 | 柳州市建桥预应力机械厂 | Front-clamping prestressing hydraulic jack |
| CN202046833U (en) * | 2011-04-26 | 2011-11-23 | 四川省固特建筑加固技术有限公司 | Lifting jack |
-
2013
- 2013-05-29 CN CN201310211647.4A patent/CN103274329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3187752B2 (en) * | 1997-09-11 | 2001-07-11 | 株式会社ピー・エス | Nervous jack |
| CN2328462Y (en) * | 1998-06-11 | 1999-07-14 | 中外合资柳州欧维姆建筑机械有限公司 | Bolt fastening machine |
| CN1374246A (en) * | 2002-04-08 | 2002-10-16 | 郭正兴 | Steel bar tensing jack |
| CN101586342A (en) * | 2009-06-15 | 2009-11-25 | 中交一航局第二工程有限公司 | Caisson adopts jack to move horizontally the roof process of jacking |
| CN201952156U (en) * | 2011-01-25 | 2011-08-31 | 柳州市建桥预应力机械厂 | Front-clamping prestressing hydraulic jack |
| CN202046833U (en) * | 2011-04-26 | 2011-11-23 | 四川省固特建筑加固技术有限公司 | Lifting jack |
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Effective date of registration: 20190404 Address after: 311200 Sancha Road Village, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU MINJIE MACHINERY CO.,LTD. Address before: 518000 No. 601, No. 5, Sixth Lane, Longtang West, Minzhi Street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Wanzhida Technology Co.,Ltd. Effective date of registration: 20190404 Address after: 518000 No. 601, No. 5, Sixth Lane, Longtang West, Minzhi Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Wanzhida Technology Co.,Ltd. Address before: 211167 1 Hong Kong Avenue, Jiangning Science Park, Nanjing, Jiangsu Patentee before: Nanjing Institute of Technology |
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