CN201459737U - Foundation pit supporting structure - Google Patents
Foundation pit supporting structure Download PDFInfo
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- CN201459737U CN201459737U CN2009200427764U CN200920042776U CN201459737U CN 201459737 U CN201459737 U CN 201459737U CN 2009200427764 U CN2009200427764 U CN 2009200427764U CN 200920042776 U CN200920042776 U CN 200920042776U CN 201459737 U CN201459737 U CN 201459737U
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Abstract
The utility model discloses a foundation pit supporting structure, which consists of soil cement stirring piles in a first sequence n1 to n9 and a concrete filling piles in a second sequence m1 to m9 which are mutually meshed and are arranged in a line, wherein the radius of each soil cement stirring pile is 0.3 to 0.4 meter and a pile interval S is 0.6 to 0.8 meter; the radius of each concrete filling pile is 0.5 to 0.6 meter; a meshing interval L between each soil cement stirring pile in the first sequence and the corresponding concrete filling pile in the second sequence is 0.2 meter; and the length of each pile is 6 to 8 meters. Compared with the conventional supporting structure, the foundation pit supporting structure of the utility model prolongs construction time for meshing, specifically, construction can be carried out on the premise that the soil cement stirring piles in the first sequence and the concrete filling piles in the second sequence are meshed within 48 to 96 hours, so that the problem of water leakage and soil cement leakage of foundation pits resulted from overlong construction pause time caused by natural causes and human errors is avoided, and construction cost is reduced.
Description
Technical field
The utility model is the supporting and protection structure of foundation ditch, and specifically it is the foundation pit supporting construction of arranging with cement mixing method and the mutual interlock of cast-in-place concrete pile, in-line.
Background technology
For the smooth construction that guarantees foundation ditch and the safety of surrounding building, between foundation ditch and foundation pit side-wall, supporting and protection structure is set usually, foundation pit supporting construction has various ways, and the effect of foundation pit supporting construction is to stop the outer underground water and soil of foundation ditch to flow in the foundation ditch.Foundation pit supporting construction is a kind of temporary structure, and under the prerequisite that guarantees foundation ditch safety, the supporting and protection structure expense is the smaller the better.The interlock stake supporting and protection structure that in-line is arranged is a kind of economic foundation pit supporting construction form, because interlock stake supporting and protection structure can prevent the seepage flow of underground water to foundation ditch, can stop soil flowing in foundation ditch again.
Interlock stake supporting and protection structure adopts the snap-fit arrangement between the cast-in-place concrete pile usually, and its construction sequence is as follows: several root radiuses of first sequence of constructing at interval on the position between foundation ditch and the foundation pit side-wall are R
1Cast-in-place concrete pile, cast-in-place concrete pile interval S=2R
2-2L (R
2Be the radius of several root cast-in-place concrete piles of second sequence construction, L is the interlock distance between first sequence and the second sequence cast-in-place concrete pile); Construction second sequence, radius are R between the cast-in-place concrete pile of first sequence construction then
2Cast-in-place concrete pile, the interlock that guarantees to have between first sequence and the second sequence cast-in-place concrete pile L is apart from (L 〉=150mm).Because hardening of concrete speed is fast, in order to guarantee the interlock effect between the cast-in-place concrete pile, the engineering time interval of requirement between the first sequence cast-in-place concrete pile and the second sequence cast-in-place concrete pile is the longest can not be above 20 hours, otherwise the interlock effect is bad, cause the foundation ditch infiltration to leak mud, influence the foundation ditch safe construction.In engineering practice; regular meeting meets nature and the artificial origin causes two sequence concrete spouting pile driving construction dead times above 20 hours; not only influenced the interlock quality between the cast-in-place concrete pile; reduce antiseepage resistance mud effect; and can cause the waste of the first sequence cast-in-place concrete pile of having constructed, cause the rising of foundation pit supporting construction cost.
Therefore, needing to solve two cast-in-place concrete piles surpasses after 20 hours, because the rising that mud and foundation pit supporting construction cost are leaked in the foundation ditch that the interlock poor quality brings infiltration surpasses 20 hours, causes interlock poor quality's foundation pit supporting construction but present incapability still solves two cast-in-place concrete piles.
The content of utility model
The purpose of this utility model is intended to overcome the problem that two cast-in-place concrete piles surpass after 20 hours, the interlock poor quality causes foundation ditch infiltration leakage mud and cast-in-place concrete pile to be wasted, thus the foundation pit supporting construction that provides a kind of cement mixing method and the mutual interlock of cast-in-place concrete pile, in-line to arrange.
The purpose of this utility model is to be achieved through the following technical solutions:
Can see the utility model---a kind of overall picture of foundation pit supporting construction substantially clearly from Fig. 1.A kind of foundation pit supporting construction, it is characterized in that it is by the cast-in-place concrete pile (2) of the cement mixing method (1) of the first sequence n1-n9 and the second sequence m1-m8 interlock and foundation pit supporting construction that the in-line that forms is arranged mutually, the radius R 1=0.3-0.4m of cement mixing method (1) wherein, pile spacing (4) S=0.6-0.8m, the radius R 2=0.5-0.6m of cast-in-place concrete pile (2), mutual interlock is apart from (3) L=0.2m between the cement mixing method of the first sequence n1-n9 (1) and the second sequence m1-m8 cast-in-place concrete pile (2), a long 6-8m that is of cement mixing method (1) and cast-in-place concrete pile (2).Realize that construction sequence of the present utility model is as follows:
1, the single shaft soil-cement stirring is moved on the 1st position of the first sequence cement mixing method 1, the code name of the 1st cement mixing method 1 is n
1, radius R
1, make the round center of the 1st cement mixing method 1 of central tube centrally aligned of single shaft soil-cement stirring;
2, one stir sinking, start the motor of single shaft soil-cement stirring, loosen wire rope, while the stirring-head of single shaft soil-cement stirring lower end stirs, when treating that stirring-head sinks down into the projected depth of cement mixing method 1, the single shaft soil-cement stirring is extracted into cement paste in the hopper;
3, two stir rising, the water spray mud while stirring, after stirring-head sinks down into the projected depth of cement mixing method 1, open single shaft soil-cement stirring pump for mortar transmission, from the spout of stirring-head cement paste is pressed into the soil, water spray mud limit, limit promotes the design stake top degree of depth of stirring-head to cement mixing method 1, and pressure 0.4-0.6MPa, hoisting velocity 0.8-1m/min, rod rotation speed 40-45 commentaries on classics/min are starched in sending of assurance single shaft soil-cement stirring, finish the 1st cement mixing method 1 of first sequence, code name n
1
4, the bearing of trend according to foundation pit supporting construction moves the single shaft soil-cement stirring, makes the round center of the 2nd cement mixing method 1 of central tube centrally aligned of single shaft soil-cement stirring, the code name n of the 2nd cement mixing method 1
2, radius R
1, and make 2 cement mixing methods, 1 spacing 4 be S=2R
2-2L, R
2Be the radius of several root cast-in-place concrete piles 1 of second sequence construction, L is the interlock distance 3 between the first sequence cement mixing method 1 and the second sequence cast-in-place concrete pile 2, L=0.2m;
5, repeating step 2,3, finish the 2nd cement mixing method 1 of first sequence, code name n
2
6, repeating step 4,2,3, finish cement mixing method 1 n of first sequence successively
3, n
4, n
5, n
6, n
7, n
8, n
9
7, after after the 1st cement mixing method 1 construction end of first sequence 48 hours, rotary drilling rig
8, rotary drilling rig cycle is poured over cubic metre of earth car or ground with the native sand material in the drill bit; Boring is finished, and carries out the clear hole first time; Put into reinforcing cage, carry out the clear hole second time; Concrete perfusion is finished the 1st cast-in-place concrete pile 2 of second sequence, code name m
1, radius R
2, the cast-in-place concrete pile 2 that guarantees the cement mixing method 1 of first sequence and second sequence has the interlock distance of L;
9, rotary drilling rig is moved on the position of the 2nd cast-in-place concrete pile 2 of second sequence, the rotary drilling rig drill bit lands gently, and rotation is spudded in, to the projected depth of cast-in-place concrete pile 2;
10, repeating step 8, finish the 2nd cast-in-place concrete pile 2 of second sequence, code name m
2, radius R
2, cast-in-place concrete pile 2 interlocks that guarantee the cement mixing method 1 of first sequence and second sequence are apart from L;
11, repeating step 9,10, under the prerequisite of the shortest 48-96 hour internal gearing, finish cast-in-place concrete pile 2 m of second sequence between the cast-in-place concrete pile 2 of the cement mixing method 1 that guarantees first sequence and second sequence
3, m
4, m
5, m
6, m
7, m
8
The utility model beneficial effect
1, do not need existing single shaft soil-cement stirring and rotary drilling rig are carried out technological improvement.
2, prolonged the engineering time of interlock, if between the cast-in-place concrete pile of the cement mixing method that guarantees first sequence and second sequence after the shortest 48 hours, under the prerequisite of 96 hours internal gearings of maximum, just can construct.
3, owing to prolonged the interlock engineering time, the rising of having avoided nature and artificial origin to cause the long foundation ditch infiltration that brings of construction dead time to leak mud and foundation pit supporting construction cost.
4, in the construction practice,, just can carry out the flowing water construction incessantly if construction is arranged rationally.
Description of drawings
Fig. 1 is the floor map of the foundation pit supporting construction arranged of in-line that the mutual interlock of single shaft cement mixing method and cast-in-place concrete pile constitutes.
Reference numeral: 1-single shaft cement mixing method; The 2-cast-in-place concrete pile; 3-interlock distance; 4-cement mixing method spacing; N1-n9 is the cement mixing method of first sequence, and m1-m8 is the cast-in-place concrete pile of second sequence, and L-is the interlock distance, the pilespacing of S-cement mixing method.
The specific embodiment
The dark 6m of Zhongshan Road, Nanjing, Jiangsu Province engineering basement foundation ditch, foundation ditch one length of side 10.2m.Ground, place is silty clay to below ground 4m, and 4m is following to be silt, and below ground 1.5m is a phreatic surface.For stoping the outer underground water and soil of foundation ditch to flow in the foundation ditch, guarantee foundation pit construction and foundation ditch surrounding building safety, need between foundation ditch and foundation pit side-wall, supporting and protection structure be set.Supporting and protection structure adopts the form of 9 cement mixing methods 1 and 8 cast-in-place concrete pile 2 interlocks, wherein cement mixing method 1 radius R
1=0.3m, cement mixing method 1 long H=6m, cast-in-place concrete pile 2 radius Rs
2=0.5m, cast-in-place concrete pile 2 long H=6m, interlock is apart from 3L=0.2m, and cement mixing method 1 spacing 4 is S=2R
2-2L=0.6m.At the bottom of the stake of cement mixing method 1 and cast-in-place concrete pile 2 was foundation ditch an end, the stake top was ground.1 cement mixing method 1 of constructing needs 8 hours, and 1 cast-in-place concrete pile 2 of constructing needs 9 hours, and the foundation pit supporting construction pattern construction sequence that then cement mixing method 1 and cast-in-place concrete pile 2 interlocks, in-line are arranged is as follows.
1, SJB-1 single shaft soil-cement stirring is moved on the 1st position of the first sequence cement mixing method 1 the code name n of the 1st cement mixing method 1
1, radius R
1=0.3m makes the round center of the 1st cement mixing method 1 of central tube centrally aligned of SJB-1 single shaft soil-cement stirring;
2, one stir sinking, start the motor of SJB-1 single shaft soil-cement stirring, loosen wire rope, the stirring-head of dual spindle soil-cement stirring lower end is while stirring, when treating that stirring-head sinks down into the 6m degree of depth of cement mixing method 1, SJB-1 single shaft soil-cement stirring is extracted into cement paste in the hopper;
3, two stir rising, the water spray mud while stirring, after stirring-head sinks down into cement mixing method 1 projected depth 6m, open the dual spindle soil-cement stirring pump for mortar transmission, from the spout of stirring-head cement paste is pressed into the soil, water spray mud limit, limit promotes stirring-head to ground, and pressure 0.4MPa, hoisting velocity 0.8m/min, rod rotation speed 45 commentaries on classics/min are starched in sending of assurance dual spindle soil-cement stirring, finish the 1st cement mixing method 1 of first sequence, code name n
1
4, the bearing of trend according to interlock stake supporting and protection structure moves SJB-1 single shaft soil-cement stirring, makes the round center of the 2nd cement mixing method 1 of central tube centrally aligned of SJB-1 single shaft soil-cement stirring, the code name n of the 2nd cement mixing method 1
2, radius R
1=0.3m, and make cement mixing method 1 spacing 4 be S=2R
2-2L=0.6m, R
2=0.5m is the radius of 8 cast-in-place concrete piles 1 of second sequence construction, and L is the interlock distance 3 between the first sequence cement mixing method 1 and the second sequence cast-in-place concrete pile 2, L=0.2m;
5, repeating step 2,3, finish the 2nd cement mixing method 1 of first sequence, code name n
2
6, repeating step 4,2,3, finish cement mixing method 1 n of first sequence successively
3, n
4, n
5, n
6, n
7, n
8, n
9
7, after the 6th cement mixing method 1 construction of first sequence finishes, the 1st cement mixing method 1 construction of first sequence finishes 48 hours, and the SLR-1 rotary drilling rig is moved to the 1st cast-in-place concrete pile 2 of second sequence, code name m
1The position on, SLR-1 rotary drilling rig drill bit lands gently, the rotation, spud in, to the projected depth of cast-in-place concrete pile 2, H=6m;
8, SLR-1 rotary drilling rig cycle is poured over cubic metre of earth car or ground with the native sand material in the drill bit; Boring is finished, and carries out the clear hole first time; Put into reinforcing cage, carry out the clear hole second time; Concrete perfusion is finished the 1st cast-in-place concrete pile 2 of second sequence, code name m
1, radius R
2=0.5m, the cast-in-place concrete pile 2 that guarantees the cement mixing method 1 of first sequence and second sequence has the interlock distance of L=0.2m;
9, the SLR-1 rotary drilling rig is moved on the position of the 2nd cast-in-place concrete pile 2 of second sequence, SLR-1 rotary drilling rig drill bit lands gently, and rotation is spudded in, to the projected depth of cast-in-place concrete pile 2, H=6m;
10, repeating step 8, finish the 1st cast-in-place concrete pile 2 of second sequence, code name m
2, radius R
2, cast-in-place concrete pile 2 interlocks that guarantee the cement mixing method 1 of first sequence and second sequence are apart from L=0.2m;
11, repeating step 9,10, between the cast-in-place concrete pile 2 of the cement mixing method 1 that guarantees first sequence and second sequence after the shortest 48 hours, under the prerequisite of 96 hours internal gearings of maximum, finish the cast-in-place concrete pile 2m of second sequence
3, m
4, m
5, m
6, m
7, m
8
Embodiment 2
The dark 8m of Nanjing, Jiangsu Province Changjiang Road engineering basement foundation ditch, foundation ditch one length of side 13.6m.Ground, place is clay to below ground 6m, and 4m is following to be silty clay, and below ground 1m is a phreatic surface.For stoping the outer underground water and soil of foundation ditch to flow in the foundation ditch, guarantee foundation pit construction and foundation ditch surrounding building safety, need between foundation ditch and foundation pit side-wall, supporting and protection structure be set.Supporting and protection structure adopts the form of 9 cement mixing methods 1 and 8 cast-in-place concrete pile 2 interlocks, wherein cement mixing method 1 radius R
1=0.4m, cement mixing method 1 long H=8m, cast-in-place concrete pile 2 radius Rs
2=0.6m, cast-in-place concrete pile 2 long H=8m, interlock is apart from 3L=0.2m, and cement mixing method 1 spacing 4 is S=2R
2-2L=0.8m.At the bottom of the stake of cement mixing method 1 and cast-in-place concrete pile 2 was foundation ditch an end, the stake top was ground.Because clay and silty clay hardness are little, 1 cement mixing method 1 of constructing needs 8 hours, 1 cast-in-place concrete pile 2 of constructing needs 9 hours, and the foundation pit supporting construction pattern construction sequence that then cement mixing method 1 and cast-in-place concrete pile 2 interlocks, in-line are arranged is as follows.
1, SJB-1 single shaft soil-cement stirring is moved on the 1st position of the first sequence cement mixing method 1 the code name n of the 1st cement mixing method 1
1, radius R
1=0.4m makes the round center of the 1st cement mixing method 1 of central tube centrally aligned of SJB-1 single shaft soil-cement stirring;
2, one stir sinking, start the motor of SJB-1 single shaft soil-cement stirring, loosen wire rope, the stirring-head of dual spindle soil-cement stirring lower end is while stirring, when treating that stirring-head sinks down into the 8m degree of depth of cement mixing method 1, SJB-1 single shaft soil-cement stirring is extracted into cement paste in the hopper;
3, two stir rising, the water spray mud while stirring, after stirring-head sinks down into cement mixing method 1 projected depth 8m, open the dual spindle soil-cement stirring pump for mortar transmission, from the spout of stirring-head cement paste is pressed into the soil, limit water spray mud limit promotes stirring-head till the ground, and what guarantee dual spindle soil-cement stirring send slurry pressure 0.5MPa, hoisting velocity 1m/min, rod rotation speed 40 commentaries on classics/min, finish the 1st cement mixing method 1 of first sequence, code name n
1
4, the bearing of trend according to interlock stake supporting and protection structure moves SJB-1 single shaft soil-cement stirring, makes the round center of the 2nd cement mixing method 1 of central tube centrally aligned of SJB-1 single shaft soil-cement stirring, the code name n of the 2nd cement mixing method 1
2, radius R
1=0.4m, and make cement mixing method 1 spacing 4 be S=2R
2-2L=0.8m, R
2=0.6m is the radius of 8 cast-in-place concrete piles 1 of second sequence construction, and L is the interlock distance 3 between the first sequence cement mixing method 1 and the second sequence cast-in-place concrete pile 2, L=0.2m;
5, repeating step 2,3, finish the 2nd cement mixing method 1 of first sequence, code name n
2
6, repeating step 4,2,3, finish the cement mixing method 1n of first sequence successively
3, n
4, n
5, n
6, n
7, n
8, n
9
7, after the 6th cement mixing method 1 construction of first sequence finishes, the 1st cement mixing method 1 construction of first sequence finishes 48 hours, and the SLR-1 rotary drilling rig is moved to the 1st cast-in-place concrete pile 2 of second sequence, code name m
1The position on, SLR-1 rotary drilling rig drill bit lands gently, the rotation, spud in, to projected depth 8m;
8, SLR-1 rotary drilling rig cycle is poured over cubic metre of earth car or ground with the native sand material in the drill bit; Boring is finished, and carries out the clear hole first time; Put into reinforcing cage, carry out the clear hole second time; Concrete perfusion is finished the 1st cast-in-place concrete pile 2 of second sequence, code name m
1, radius R
2=0.6m, the cast-in-place concrete pile 2 that guarantees the cement mixing method 1 of first sequence and second sequence has the interlock distance of L=0.2m;
9, the SLR-1 rotary drilling rig is moved on the position of the 2nd cast-in-place concrete pile 2 of second sequence, SLR-1 rotary drilling rig drill bit lands gently, and rotation is spudded in, to projected depth 8m;
10, repeating step 8, finish the 1st cast-in-place concrete pile 2 of second sequence, code name m
2, radius R
2=0.6m, cast-in-place concrete pile 2 interlocks that guarantee the cement mixing method 1 of first sequence and second sequence are apart from L=0.2m;
11, repeating step 9,10, between the cast-in-place concrete pile 2 of the cement mixing method 1 that guarantees first sequence and second sequence after the shortest 48 hours, under the prerequisite of 96 hours internal gearings of maximum, finish the cast-in-place concrete pile 2m of second sequence
3, m
4, m
5, m
6, m
7, m
8
Claims (1)
1. foundation pit supporting construction, it is characterized in that it is by the cast-in-place concrete pile (2) of the cement mixing method (1) of the first sequence n1-n9 and the second sequence m1-m8 interlock and foundation pit supporting construction that the in-line that forms is arranged mutually, the radius R 1=0.3-0.4m of cement mixing method (1) wherein, pile spacing (4) S=0.6-0.8m, the radius R 2=0.5-0.6m of cast-in-place concrete pile (2), mutual interlock is apart from (3) L=0.2m between the cement mixing method of the first sequence n1-n9 (1) and the second sequence m1-m8 cast-in-place concrete pile (2), a long 6-8m that is of cement mixing method (1) and cast-in-place concrete pile (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200427764U CN201459737U (en) | 2009-06-25 | 2009-06-25 | Foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200427764U CN201459737U (en) | 2009-06-25 | 2009-06-25 | Foundation pit supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201459737U true CN201459737U (en) | 2010-05-12 |
Family
ID=42387090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200427764U Expired - Lifetime CN201459737U (en) | 2009-06-25 | 2009-06-25 | Foundation pit supporting structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882870A (en) * | 2014-03-24 | 2014-06-25 | 上海强劲地基工程股份有限公司 | Cement mixing pile and concrete pile meshing supporting structure and construction method |
| CN104278680A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with press grouting piles and construction method |
| CN104278679A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with precast tubular piles and construction method |
| CN104480947A (en) * | 2014-11-24 | 2015-04-01 | 江西中恒岩土工程技术有限公司 | Construction method of prestress cast-in-place pile and soil cement pile engagement support |
| CN104563095A (en) * | 2014-12-18 | 2015-04-29 | 上海建工二建集团有限公司 | Novel enclosure system of soft-hard occlusion piles and construction method |
| CN104594359A (en) * | 2014-11-24 | 2015-05-06 | 江西中恒岩土工程技术有限公司 | Multi-row structural steel lap joint supporting construction method |
-
2009
- 2009-06-25 CN CN2009200427764U patent/CN201459737U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278680A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with press grouting piles and construction method |
| CN104278679A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with precast tubular piles and construction method |
| CN103882870A (en) * | 2014-03-24 | 2014-06-25 | 上海强劲地基工程股份有限公司 | Cement mixing pile and concrete pile meshing supporting structure and construction method |
| CN104480947A (en) * | 2014-11-24 | 2015-04-01 | 江西中恒岩土工程技术有限公司 | Construction method of prestress cast-in-place pile and soil cement pile engagement support |
| CN104594359A (en) * | 2014-11-24 | 2015-05-06 | 江西中恒岩土工程技术有限公司 | Multi-row structural steel lap joint supporting construction method |
| CN104563095A (en) * | 2014-12-18 | 2015-04-29 | 上海建工二建集团有限公司 | Novel enclosure system of soft-hard occlusion piles and construction method |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU EAST CHINA ENGINEERING DESIGN CO., LTD. Free format text: FORMER OWNER: JIANGSU HUADONG CONSTRUCTIONAL FUNDAMENT ENGINEERING CO., LTD. Effective date: 20130407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130407 Address after: Longpan road Xuanwu District of Nanjing city Jiangsu province 210037 Xinzhuang No. 9 Patentee after: Nanjing Forestry University Patentee after: Jiangsu Huadong Engineering Design Co., Ltd. Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: Nanjing Forestry University Patentee before: Jiangsu Huadong Constructional Fundament Engineering Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |