CN201347584Y - Prestressed steel pipe truss system - Google Patents
Prestressed steel pipe truss system Download PDFInfo
- Publication number
- CN201347584Y CN201347584Y CNU2008202053126U CN200820205312U CN201347584Y CN 201347584 Y CN201347584 Y CN 201347584Y CN U2008202053126 U CNU2008202053126 U CN U2008202053126U CN 200820205312 U CN200820205312 U CN 200820205312U CN 201347584 Y CN201347584 Y CN 201347584Y
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- steel pipe
- prestressed
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Abstract
The utility model discloses a prestressed steel pipe truss system, which is used for constructional engineering and has structurally functions of large span and high load. The prestressed steel pipe truss system comprises a tensioning end supporting base, a fixing end supporting base and a truss main body structure. The truss main body structure comprises an upper chord member, a lower chord member and a web member, the lower chord member comprises a lower chord pipe, a prestressed sleeve pipe arranged inside the lower chord pipe and a sleeve pipe fixing support fixedly connecting the lower chord pipe and the prestressed sleeve pipe. A prestressed steel stranded wire is tensioned inside the sleeve pipe, microdilatancy cement slurry is filled in the sleeve pipe, and then internal stress generated after loading can be counteracted partially, thereby saving structural materials, having fine corrosion resistance and fire proof performances, and prolonging the service life of the prestressed steel pipe truss system. The presstressed steel pipe truss system utilizes a structure form of pipes sleeved with pipes, and utilizes end plates to be fixedly connected with stiffening ribs and is filled with cement slurry, thereby replacing traditional cast steel joints and having the advantages of high strength, fine stability, short manufacturing period and obvious economic benefit.
Description
Technical field
The utility model relates to a kind of trussing for building, relates in particular to the pre-stressed steel pipe trussing of a kind of large span heavy load building supporting.
Background technology
Because beautiful design, arrangement form are flexible, various steel pipe truss structures are widely used in building engineering field.At present, the steel pipe truss that building field uses mostly is plane frame, and mainly be for satisfying the architectural image needs, structural configuration itself has many unreasonable parts, inhomogeneous as distribution of internal force, indivedual rod members are stressed very big, and indivedual rod member internal force are almost nil again, the required cross section of the rod member selected for use is bigger than normal, to expend construction timber more thereby cause, otherwise can cause insufficient rigidity because of the rod member discontinuity; Especially under the situation of large span, heavy load, the distortion of whole truss increases, and the truss amount of deflection is bigger.In order to satisfy the requirement of national regulation, in order to satisfy the truss rigidity requirement, need the extra more structure material that increases, sacrifice more architectural space, further increase cost.In order to improve the force-bearing situation of steel tube member bar, steel pipe truss has also been introduced prestressing technique, thereby applies distribution of internal force that prestressing force improves trussmember, improves the rigidity of structure of truss by the part rod member at steel pipe truss.But in actual applications, for the steel strand in the steel pipe that makes large span adjustable, generally all adopt the outer prestress steel twist line technology of no convered structure, prestress wire will be exposed in the air for a long time, must reduce its Corrosion Protection and fireproof performance like this, make be difficult for guaranteeing the application life of truss.
Summary of the invention
At the deficiencies in the prior art, the technical problems to be solved in the utility model provides that a kind of distribution of internal force is reasonable, the rigidity of structure good, and truss bearing place does not produce horizontal thrust, and can effectively guarantee the anticorrosion fireproof performance of presstressed reinforcing steel, the pre-stressed steel pipe trussing that effectively prolongs its application life.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of pre-stressed steel pipe trussing, comprise stretch-draw end bearing, fixed end bearing, truss agent structure, described truss agent structure comprises upper chord, lower chord and web member, and lower chord comprises lower chord tube, is arranged at the sleeve pipe fixed support of string sleeve pipe, fixedly connected described lower chord tube and prestressed casing in this lower chord tube.
As the improvement of such scheme, described prestressed casing is limited to the middle position of lower chord tube inside by the sleeve pipe fixed support.
As the improvement of such scheme, be welded with the grouting arm that is used for grout injection in the string sleeve pipe on the described prestressed casing, described lower chord tube stress smaller part is provided with the grouting channel hole, and this grouting channel hole is corresponding with the position of described grouting arm.
As the improvement of such scheme, described lower chord comprises the prestress wire that is arranged in the described prestressed casing, and the two ends of this prestress wire are separately fixed at the two ends of lower chord by stretch-draw end bearing, fixed end bearing.
Improvement as such scheme, described stretch-draw end bearing, fixed end bearing all comprise the truss bearing, and this truss bearing comprises the bearing outer tube, be arranged at front end-plate described bearing outer tube inside and that with the isometric bearing inner sleeve of this bearing outer tube, fixedly be welded in described bearing inner sleeve and bearing outer tube two ends and end plate, fixedly connected the sleeve combination stiffening rib of bearing inner sleeve and bearing outer tube.
As the improvement of such scheme, described string sleeve pipe is arranged in described end plate, and the end of this string sleeve pipe has horn mouth, and the size of this bell-mouthed enlarged footing and bearing inner sleeve is complementary.
As the improvement of such scheme, described bearing inner sleeve has the inner sleeve reinforcing ring.
As the improvement of such scheme, described end plate and described lower chord tube junction are provided with stiffening rib, this stiffening rib and described end plate, the fixing welding of described lower chord.
Improvement as such scheme, the arranged outside of described front end-plate is useful on the ground tackle of the described prestress wire of tension, be provided with backing plate between this ground tackle and the described front end-plate, be welded with the steel cap that covers described ground tackle on this backing plate, this steel cap is provided with grouting mouth and exhaust opening.
As the improvement of such scheme, described bearing outer tube is provided with grout hole, the steam vent that is used for perfusion micro-expansion cement slurry between the bearing internal and external casing.
As the improvement of such scheme, described prestress wire is a un-bonded prestressed steel strand, has built the micro-expansion cement slurry between the prestress wire in bearing inner sleeve and sleeve pipe.
As the improvement of such scheme, the combination of described stretch-draw end bearing bottom is welded with little displacement pot rubber bearing.
The beneficial effects of the utility model are: truss lower chord of the present utility model comprises lower chord tube, is arranged at the sleeve pipe fixed support of prestressed casing, fixedly connected described lower chord tube and prestressed casing in this lower chord tube, the form of structure of the pipe middle sleeve that is fixedly connected to form by fixed support, make trussmember can bear bigger load and internal force, saved structure material.
In the utility model, materials such as steel tube component, microdilatancy pea gravel concreten, cement mortar, prestress wire are combined, prestress wire is worn and is drawn in sleeve pipe, then adopt the way of bonded prestressed tendon, perfusion micro-expansion cement slurry makes full use of above-mentioned material characteristic separately in sleeve pipe, and it is good that it organically is combined into a kind of rigidity of structure, bearing capacity is big, and anticorrosion fireproof performance and durability promptly use novel pre-stressed preferably steel pipe of life-span to pass through truss mutually.
The novel combined joint bearing that the stretch-draw end in the utility model and the bearing of fixed end adopt bearing inner sleeve, bearing outer tube, sleeve combination stiffening rib, micro-expansion cement slurry to combine, this bearing not only bearing capacity is big, and replaced the way that this type of important node in the traditional architecture engineering adopts cast steel node usually, make easy construction, the duration is short, material cost obviously reduces, remarkable in economical benefits.
The dilatation that the truss of large span can produce behind stress deformation, stretch-draw end bearing in the utility model is introduced little displacement pot rubber bearing, making stretch-draw end truss bearing to produce moves horizontally, avoid producing horizontal thrust, eliminated the part internal stress, but also made things convenient for the lower support structure Design and the construction of truss bearing, work progress is simplified, construction cost reduces, and has optimized stressed distribution, durability and the longer service life of member.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of pre-stressed steel pipe trussing of the utility model;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is the structural configuration schematic diagram of the stretch-draw end bearing in the utility model;
Fig. 4 is the B-B generalized section of Fig. 3;
Fig. 5 is the structural configuration schematic diagram of the fixed end bearing in the utility model;
Fig. 6 is bearing sleeve pipe and the lower chord combining structure schematic diagram in the utility model.
The specific embodiment
The utility model is described in further detail and description below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of pre-stressed steel pipe trussing of the utility model, comprise stretch-draw end bearing 1, fixed end bearing 2, truss agent structure, described truss agent structure comprises upper chord 3, lower chord 4 and web member 5, and lower chord 4 comprises lower chord tube 40, is arranged at the sleeve pipe fixed support 8 of the prestressed casing 7 in this lower chord tube, fixedly connected described lower chord tube 40 and prestressed casing 7.The lower chord tube 40 and the prestressed casing 7 of lower chord 4 are combined to form bimetallic tube, and sleeve pipe fixed support 8 and prestressed casing 7 weld fixing at link position, and the other end rounding polishing of sleeve pipe fixed support 8 withstands on lower chord tube 40 inwalls.
Wherein, described upper chord 4, lower chord tube 40 and web member 5 can adopt the steel pipe of circular cross-section or square-section, and described prestressed casing 7 can adopt the thin-walled round steel pipe, and described sleeve pipe fixed support 8 can adopt round steel or steel plate.
More preferably, more even in order to make member stress, the lower chord tube 40 and the prestressed casing 7 of bimetallic tube member is set to concentric, perhaps described prestressed casing 7 is limited to the middle position of lower chord tube 40 inside by sleeve pipe fixed support 8.
The truss of large span can produce crooked after evenly carrying is loaded greatly, lower chord member can produce dilatation on it, and wherein upper chord 3 is received compression, and lower chord 4 is stretched, therefore can produce compression or stretching internal stress, reduce the mechanical property of member even destroy member.In order to offset the stretching internal stress of lower chord, in the prestressed casing 7 of lower chord 4, be equipped with prestress wire 6, the two ends of this prestress wire 6 are separately fixed at the two ends of lower chord 4 by stretch-draw end bearing 1, fixed end bearing 2.
The utility model is provided with prestress wire 6 in the prestressed casing 7 of truss, utilize the stretch-draw of prestress wire 6, makes this member produce the reversal deformation of trussed construction under load action in advance.Described prestress wire 6 carries out lashing stretch-draw by the guiding of sleeve pipe, and occupy the kernel of section of lower chord member all the time at each loading status of stretch-draw, anchoring front and back, has guaranteed the stress performance of structural entity.
More preferably, with reference to figure 4, be welded with the grouting arm 26 that is used for grout injection in prestressed casing 7 on the described prestressed casing 7, described lower chord tube 40 stress smaller parts are provided with grouting channel hole 27, and this grouting channel hole 27 is corresponding with the position of described grouting arm 26.Grouting arm 26 and grouting channel hole 27 starch 9 to perfusion micro-expansion cement in the string sleeve pipe 7 after being used to finish prestress wire 6 stretch-draw.
More preferably, with reference to figure 3, Fig. 4, Fig. 5, described stretch-draw end bearing 1, fixed end bearing 2 all comprise the truss bearing, and this truss bearing is the combination and the make of the identical structure member of stretch-draw end bearing 1, fixed end bearing 2.The truss bearing comprises bearing outer tube 16, bearing inner sleeve 15, front end-plate 13, end plate 20, sleeve combination stiffening rib 14.Bearing inner sleeve 15 is arranged at the inside of described bearing outer tube 16 and isometric with this bearing outer tube 16; Front end-plate 13 and end plate 20 fixedly are welded in the two ends of described bearing inner sleeve 15 and bearing outer tube 16 respectively, form the double-layer sleeve structure of closed at both ends; Sleeve combination stiffening rib 14 is arranged between bearing inner sleeve 15 and the bearing outer tube 16, is used for fixing to connect bearing inner sleeve 15 and bearing outer tube 16, forms interconnective bimetallic tube, with front end-plate 14, end plate 20 fixedly connected internal and external double-layer.Sleeve combination stiffening rib 14 forms the I-shaped structure with the internal and external double-layer common combination, forms the structural steel than hard intensity and rigidity.
More preferably, simultaneously with reference to figure 6, described prestressed casing 7 is arranged in described end plate 20, and the external diameter of string sleeve pipe 7 is consistent with the preformed hole diameter of end plate 20, and it is suitable to make both install.The end of this prestressed casing 7 has horn mouth 18, this horn mouth 18 has funnel shaped, these horn mouth 18 structures stretch in the bearing inner sleeve 15, and the size of the enlarged footing of this horn mouth 18 and bearing inner sleeve 15 is complementary and fixing with the welding of the inwall of bearing inner sleeve 15.So just form the structure that prestressed casing 7 is communicated with bearing inner sleeve 15, can a step finish the grouting operation of prestressed casing 7 and bearing inner sleeve 15 inside.Horn mouth 18 structures can make little prestressed casing of diameter 7 and bearing inner sleeve 18 form the gradual change syndeton, make prestressed casing 7 be connected more firm with bearing inner sleeve 15.
More preferably, for rigidity and the intensity that makes the thin wall casing body is bigger, in bearing inner sleeve 15 inside inner sleeve reinforcing ring 17 is set, this reinforcing ring is along the circumferential setting of bearing inner sleeve 15.
More preferably, in order to make end plate 20 be connected more firm with lower chord tube 40, string sleeve pipe 7, be provided with stiffening rib 21 in end plate 20 and described lower chord tube 40 junctions, this stiffening rib 21 and described end plate 20, the 4 fixing welding of described lower chord, this stiffening rib 21 is the tabular stiffening rib of triangle, and its two right-angle side is fixed with end plate 20, lower chord tube 4 welding respectively.In order to make stiffening rib 21 structures more firm, lower chord tube 40, end plate 20 stressed balances more can be along circumferentially even 6 stiffening ribs that distribute of lower chord tube 40.
More preferably, the arranged outside of described front end-plate 13 is useful on the ground tackle 11 of the described prestress wire 6 of tension, be provided with backing plate 12 between this ground tackle 11 and the described front end-plate 13, be welded with the steel cap 10 that covers described ground tackle 11 on this backing plate 12, these steel cap 10 inside can pour into cement paste 9, the end of sealing ground tackle 11 and prestress wire 6.This steel cap 10 is provided with and discharges the tired gas that closes in the steel cap 10 when grouting mouthfuls 28 and 29, two apertures of exhaust opening are used for to steel cap 10 in grouting and grouting.
More preferably, described bearing outer tube 16 is provided with grout hole 23, the steam vent 24 that is used for perfusion micro-expansion cement slurry 9 between the bearing internal and external casing.Between the bearing internal and external casing, after bearing inner sleeve 15 inside all pour into micro-expansion cement slurry 9, adopt said structure can replace traditional steel casting bearing, it has the equal bearing capacity of steel casting bearing, and cost of manufacture and material cost are all low than steel casting bearing.
More preferably, described stretch-draw end bearing 1 bottom combination is welded with little displacement pot rubber bearing 22.Will produce internal force after the steel pipe truss loaded object is stressed, this internal force can make truss lower chord 4 produce the flexible of length, the little displacement pot rubber bearing 22 of stretch-draw end bearing 1 bottom can produce the displacement of trace under the thrust of lower chord 4, can eliminate the internal force of stretch-draw end bearing 1, i.e. its inner shear stress.
In the utility model, the process of steel pipe truss system construction is specifically comprised the steps:
(1) at first is made into truss agent structure, stretch-draw end bearing 1 and fixed end bearing 2 respectively with steel.Described member comprises upper chord 3, lower chord 4 and web member 5; Described stretch-draw end bearing 1 and fixed end bearing 2 comprise bearing inner sleeve 15, bearing outer tube 16, front end-plate 13, end plate 20, sleeve combination stiffening rib 14, inner sleeve reinforcing ring 17, stiffening rib 21, steel cap 10 etc., and leave grout hole 23 and steam vent 24 respectively on steel cap 10 and bearing outer tube 16 separately; The little displacement pot rubber bearing 22 of bottom welding combination of stretch-draw end bearing 1.
(2) end plate 20 with stretch-draw end bearing 1 and truss lower chord 4 junctions is enclosed within prestressed casing 7 one ends, and end plate 20 outsides are made into horn mouth 18 shapes near the end of the string sleeve pipe 7 of bearing, and the size of its enlarged footing and bearing inner sleeve 15 is complementary.Fixed end bearing 2 is done identical processing.
(3) on prestressed casing 7, press suitably apart from soldering sleeve fixed support 8, the spacing of sleeve pipe fixed support 8 obtains according to the rigidity requirement calculating that string sleeve pipe 7 penetrates behind the prestress wire 6, and at prestressed casing 7 predeterminated positions welding grouting arm 26, the position behind the welding grouting arm 26 does not influence the rotation of prestressed casing 7 in lower chord tube 4.
(4) position of prestressed casing 7 relative lower chord tubes 4 mix up fixing after, with truss agent structure and stretch-draw end bearing 1 and fixed end bearing 2 splice, firm welding.
(5) in truss string sleeve pipe 4, penetrate prestress wire 6 by prestressed casing 7, and determine stretch-draw number of times and stretch-draw order according to calculating.After the stretch-draw for the first time, perfusion micro-expansion cement slurry 9 seals its grout hole 23, venthole 24 between the bearing inner sleeve 15 of stretch-draw end bearing 1 and fixed end bearing 2, the bearing outer tube 16.After treating that whole stretch-draw are finished, prestress wire 6 is fixed on the bearing at two ends by ground tackle 11 by backing plate 12, weldable steel cap 10 on backing plate 12, at pouring micro-expansion cement slurry 9 between prestressed casing 7 and the prestress wire 6, between steel cap 10 and the ground tackle 11, seal its grout hole 28, venthole 29.This has just finished main construction course.
Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (10)
1, a kind of pre-stressed steel pipe trussing, comprise stretch-draw end bearing, fixed end bearing, truss agent structure, described truss agent structure comprises upper chord, lower chord and web member, it is characterized in that: lower chord comprises lower chord tube, is arranged at the sleeve pipe fixed support of prestressed casing, fixedly connected described lower chord tube and prestressed casing in this lower chord tube.
2, pre-stressed steel pipe trussing according to claim 1 is characterized in that: described prestressed casing is limited to the middle position of lower chord tube inside by the sleeve pipe fixed support.
3, pre-stressed steel pipe trussing according to claim 1, it is characterized in that: be welded with the grouting arm that is used for grout injection in prestressed casing on the described prestressed casing, described lower chord tube stress smaller part is provided with the grouting channel hole, and this grouting channel hole is corresponding with the position of described grouting arm.
4, pre-stressed steel pipe trussing according to claim 1, it is characterized in that: described lower chord comprises the prestress wire that is arranged in the described prestressed casing, and the two ends of this prestress wire are separately fixed at the two ends of lower chord by stretch-draw end bearing, fixed end bearing.
5, pre-stressed steel pipe trussing according to claim 1, it is characterized in that: described stretch-draw end bearing, fixed end bearing all comprise the truss bearing, and this truss bearing comprises the bearing outer tube, be arranged at front end-plate described bearing outer tube inside and that with the isometric bearing inner sleeve of this bearing outer tube, fixedly be welded in described bearing inner sleeve and bearing outer tube two ends and end plate, fixedly connected the sleeve combination stiffening rib of bearing inner sleeve and bearing outer tube.
6, pre-stressed steel pipe trussing according to claim 5, it is characterized in that: described prestressed casing is arranged in described end plate, and the end of this prestressed casing has horn mouth, and the size of this bell-mouthed enlarged footing and bearing inner sleeve is complementary.
7, pre-stressed steel pipe trussing according to claim 5 is characterized in that: described end plate and described lower chord tube junction are provided with stiffening rib, this stiffening rib and described end plate, the fixing welding of described lower chord.
8, pre-stressed steel pipe trussing according to claim 5, it is characterized in that: the arranged outside of described front end-plate is useful on the ground tackle of the described prestress wire of tension, be provided with backing plate between this ground tackle and the described front end-plate, be welded with the steel cap that covers described ground tackle on this backing plate, this steel cap is provided with grouting mouth and exhaust opening.
9, pre-stressed steel pipe trussing according to claim 5 is characterized in that: described bearing outer tube is provided with grout hole, the steam vent that is used for perfusion micro-expansion cement slurry between the bearing internal and external casing.
10, pre-stressed steel pipe trussing according to claim 5, it is characterized in that: described prestress wire is a un-bonded prestressed steel strand, has built the micro-expansion cement slurry between the prestress wire in bearing inner sleeve and sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202053126U CN201347584Y (en) | 2008-12-16 | 2008-12-16 | Prestressed steel pipe truss system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202053126U CN201347584Y (en) | 2008-12-16 | 2008-12-16 | Prestressed steel pipe truss system |
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| Publication Number | Publication Date |
|---|---|
| CN201347584Y true CN201347584Y (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202053126U Expired - Fee Related CN201347584Y (en) | 2008-12-16 | 2008-12-16 | Prestressed steel pipe truss system |
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| CN (1) | CN201347584Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535864A (en) * | 2012-03-19 | 2012-07-04 | 中冶天工集团有限公司 | Method for reducing column top additional horizontal force in tension process of pre-stressed steel structure construction |
| CN102535328A (en) * | 2012-02-10 | 2012-07-04 | 中铁第五勘察设计院集团有限公司 | In-pipe prestressed steel-pipe truss composite simply-supported beam structure |
| CN107059593A (en) * | 2017-04-25 | 2017-08-18 | 桑大勇 | A kind of interior suspension cable compound section bridge and its construction method |
| CN107227819A (en) * | 2017-06-12 | 2017-10-03 | 河南奥斯派克科技有限公司 | Antinode plate and double C shape steel composites structure part truss |
| CN112095779A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Prestressed truss end base structure and construction method |
| CN112096088A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Steel pipe prestressed steel strand high-altitude pipe penetration construction method |
| CN114293455A (en) * | 2021-10-11 | 2022-04-08 | 郑孝群 | One-pull road bridge and its manufacture and construction |
-
2008
- 2008-12-16 CN CNU2008202053126U patent/CN201347584Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535328A (en) * | 2012-02-10 | 2012-07-04 | 中铁第五勘察设计院集团有限公司 | In-pipe prestressed steel-pipe truss composite simply-supported beam structure |
| CN102535864A (en) * | 2012-03-19 | 2012-07-04 | 中冶天工集团有限公司 | Method for reducing column top additional horizontal force in tension process of pre-stressed steel structure construction |
| CN107059593A (en) * | 2017-04-25 | 2017-08-18 | 桑大勇 | A kind of interior suspension cable compound section bridge and its construction method |
| CN107227819A (en) * | 2017-06-12 | 2017-10-03 | 河南奥斯派克科技有限公司 | Antinode plate and double C shape steel composites structure part truss |
| CN112095779A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Prestressed truss end base structure and construction method |
| CN112096088A (en) * | 2020-08-21 | 2020-12-18 | 中国建筑第八工程局有限公司 | Steel pipe prestressed steel strand high-altitude pipe penetration construction method |
| CN114293455A (en) * | 2021-10-11 | 2022-04-08 | 郑孝群 | One-pull road bridge and its manufacture and construction |
| CN114293455B (en) * | 2021-10-11 | 2024-04-05 | 郑孝群 | One-pull road bridge and its manufacture and construction |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGZHOU CONSTRUCTION CO., LTD. Free format text: FORMER OWNER: GUANGZHOU MUNICIPAL CONSTRUCTION GROUP CO., LTD. Effective date: 20120626 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120626 Address after: 510030 No. 4, Guang Wei Road, Guangzhou, Guangdong Patentee after: Guangzhou Construction Co., Ltd. Address before: 510030 construction building, 4 Guang Wei Road, Guangdong, Guangzhou Patentee before: Guangzhou Municipal Construction Group Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20121216 |