CN101852017A - Pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket - Google Patents
Pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket Download PDFInfo
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- CN101852017A CN101852017A CN201010190755A CN201010190755A CN101852017A CN 101852017 A CN101852017 A CN 101852017A CN 201010190755 A CN201010190755 A CN 201010190755A CN 201010190755 A CN201010190755 A CN 201010190755A CN 101852017 A CN101852017 A CN 101852017A
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- concrete
- bifurcated pipe
- tailrace
- bifurcation
- power station
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a poring method trailrace tube bifurcation concrete for a hydraulic power station without a bracket. An integrally closed bifurcation lining is used for realizing the purpose of integrally and continuously pouring tailrace bifurcation tube concrete, the integrity of the concrete structure and the anti-leakage capacity of the tailrace bifurcation tube structure can be kept, and complex and complicated bracket constructing processes in the construction process can be avoided. In order to resist the concrete self-weight pressure and the construction load and maintain the structural stability and safety, fluid is injected into the closed steel lining in the casting process of the tailrace bifurcation tube concrete to balance the concrete self-weight and the construction load. The liquid pressure is used for replacing the current rod support, thereby saving a large amount of supporting materials and labor force, shortening the construction period, improving the project quality, keeping the durability of the tailrace bifurcation tube structure, and ensuring the safe operation of the power station.
Description
Technical field
The invention belongs to building structure and engineering field, particularly a kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket.
Background technology
Underground workshop is mainly by diversion system, factory building system and tail water system constitute, the tail water bifurcated pipe is the important component part of tail water system, in the prior art, for adapting to underground power house overall structure needs, tail water bifurcated pipe cavern build complexity, the spatial special curved-surface structure that dimensioning is changeable, the construction plant is narrow, the lining cutting position in storehouse is big, can't use the large-scale integral Combinated shuttering for shaping in the work progress, needs to adopt the assembled formwork of full framing, for guaranteeing the concrete lining build, surface transition is smooth smooth-going, assembled formwork need be set up working platform, the work progress complexity, and efficient is low; Because the vertical build of tail water bifurcated pipe is inconsistent, physical dimension also will change, template needs segmentation to install, and working platform also needs and must segmentation set up; Because the particularity of tail water bifurcated pipe section configuration, the lining concrete on the same section can't be shaped by once-cast, and template also needs the segmentation piecemeal to set up; The construction pattern of template piecemeal causes difficulty for on-the-spot accurately location, the upright construction of firm frame, and fluid concrete also need be provided with constuction joint.Tail water bifurcated pipe Concrete Construction has mainly adopted the rack template job practices, can not realize integral and continuous pouring; Thereby construction technology of the prior art the weakened globality of concrete structure and the antiseepage ability of tail water bifurcated pipe structure can influence normal operation in power station and power grid security when serious.
Therefore, need improve the tail water bifurcated pipe pouring procedure of prior art, the concrete cast realization of tail water bifurcated pipe integral body is carried out continuously, can keep the globality of concrete structure and the antiseepage ability of tail water bifurcated pipe structure, can avoid complicated and loaded down with trivial details support build process in the work progress, shorten construction period, improved workmanship, guarantee tail water bifurcated pipe durability of structures and guarantee the power plant safety operation.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket, the concrete cast realization of tail water bifurcated pipe integral body is carried out continuously, can keep the globality of concrete structure and the antiseepage ability of tail water bifurcated pipe structure, can avoid complicated and loaded down with trivial details support build process in the work progress, shorten construction period, improved workmanship, guarantee tail water bifurcated pipe durability of structures and guarantee the power plant safety operation.
The invention discloses a kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket, may further comprise the steps:
A. be assembled into the bifurcated pipe liner of sealing according to the shape of tail water bifurcated pipe by the steel plate of piecemeal processing, and be positioned at the top steam vent is set;
B. perfusion fluid in the bifurcated pipe liner, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, satisfy formula:
γ wherein
yBe perfusion fluid proportion, γ
cBe concrete proportion, β
yFor perfusion fluid floods the angle of circumference of steel lining arc length correspondence, β
cConcrete is buried the angle of circumference of steel lining arc length correspondence;
C. finish the cast of tail water bifurcated pipe, discharge the liquid of perfusion in the bifurcated pipe liner.
Further, the liquid of perfusion is mud in the described bifurcated pipe liner.
The invention also discloses another kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket, may further comprise the steps:
A. be assembled into the bifurcated pipe liner of sealing by the steel plate of piecemeal processing according to the shape of tail water bifurcated pipe;
B. in the bifurcated pipe liner, pour into gas, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, the length of burying the steel lining arc length along with concrete increases the external pressure that guarantees that gas pressure produces the bifurcated pipe liner more than or equal to concrete gravity pressure and working load;
C. finish the cast of tail water bifurcated pipe, discharge the gas of perfusion in the bifurcated pipe liner.
The invention has the beneficial effects as follows: pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket of the present invention, adopt the bifurcated pipe liner of integrally closed, the concrete cast realization of tail water bifurcated pipe integral body is carried out continuously, can keep the globality of concrete structure and the antiseepage ability of tail water bifurcated pipe structure, can avoid complicated and loaded down with trivial details support build process in the work progress, in order to resist concrete gravity pressure and working load, keep Stability Analysis of Structures and safety, with tail water bifurcated pipe concrete pouring process, in the sealing steel lining, inject fluid, utilize liquid in pipe pressure to come deadweight of balance concrete and working load, fluid pressure replaces existing rod member to support, save a large amount of backing material and labour, shorten construction period, improved workmanship, guarantee tail water bifurcated pipe durability of structures and guarantee the power plant safety operation, and fluid pressure is not subjected to the restriction of planform and parts, be not subjected to the restriction of Support Position, the supporting role of continuous distributed can be provided as requested, avoid rod member to support making the phenomenon of template unbalance stress.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Accompanying drawing is a principle of the invention schematic diagram.
The specific embodiment
Embodiment one
Accompanying drawing is a principle of the invention schematic diagram, and the pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket of present embodiment the invention discloses a kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket, may further comprise the steps:
A. be assembled into the bifurcated pipe liner 1 of sealing according to the shape of tail water bifurcated pipe by the steel plate of piecemeal processing, and be positioned at the top steam vent is set;
B. perfusion fluid 2 in the bifurcated pipe liner, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, satisfy formula:
As shown in the figure: γ wherein
yBe perfusion fluid proportion, γ
cBe concrete proportion, β
yFor perfusion fluid floods the angle of circumference of steel lining arc length correspondence, β
cConcrete is buried the angle of circumference of steel lining arc length correspondence;
C. finish the cast of tail water bifurcated pipe, discharge the liquid 2 of perfusion in the bifurcated pipe liner.
In the present embodiment, the liquid 2 of perfusion is mud in the described bifurcated pipe liner, can realize goal of the invention, and saves cost.
Embodiment two
Present embodiment discloses a kind of pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket, may further comprise the steps:
A. be assembled into the bifurcated pipe liner of sealing by the steel plate of piecemeal processing according to the shape of tail water bifurcated pipe;
B. in the bifurcated pipe liner, pour into gas, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, the length of burying the steel lining arc length along with concrete increases the external pressure that guarantees that gas pressure produces the bifurcated pipe liner more than or equal to concrete gravity pressure and working load;
C. finish the cast of tail water bifurcated pipe, discharge the gas of perfusion in the bifurcated pipe liner.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket is characterized in that: may further comprise the steps:
A. be assembled into the bifurcated pipe liner of sealing according to the shape of tail water bifurcated pipe by the steel plate of piecemeal processing, and be positioned at the top steam vent is set;
B. perfusion fluid in the bifurcated pipe liner, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, satisfy formula:
γ wherein
yBe perfusion fluid proportion, γ
cBe concrete proportion, β
yFor perfusion fluid floods the angle of circumference of steel lining arc length correspondence, β
cConcrete is buried the angle of circumference of steel lining arc length correspondence;
C. finish the cast of tail water bifurcated pipe, discharge the liquid of perfusion in the bifurcated pipe liner.
2. pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket according to claim 1 is characterized in that: the liquid of perfusion is mud in the described bifurcated pipe liner.
3. pouring method of tailrace tube bifurcation concrete for hydraulic power station without bracket is characterized in that: may further comprise the steps:
A. be assembled into the bifurcated pipe liner of sealing by the steel plate of piecemeal processing according to the shape of tail water bifurcated pipe;
B. in the bifurcated pipe liner, pour into gas, and outside the bifurcated pipe liner, pour into a mould the bifurcated pipe concrete; In the cast bifurcated pipe concrete process, the length of burying the steel lining arc length along with concrete increases the external pressure that guarantees that gas pressure produces the bifurcated pipe liner more than or equal to concrete gravity pressure and working load;
C. finish the cast of tail water bifurcated pipe, discharge the gas of perfusion in the bifurcated pipe liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101907554A CN101852017B (en) | 2010-06-03 | 2010-06-03 | Pouring method of fork tube concrete for hydraulic power station without bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101907554A CN101852017B (en) | 2010-06-03 | 2010-06-03 | Pouring method of fork tube concrete for hydraulic power station without bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101852017A true CN101852017A (en) | 2010-10-06 |
| CN101852017B CN101852017B (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101907554A Expired - Fee Related CN101852017B (en) | 2010-06-03 | 2010-06-03 | Pouring method of fork tube concrete for hydraulic power station without bracket |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073013A (en) * | 1992-11-17 | 1993-06-09 | 水利部交通部能源部南京水利科学研究院 | Detect the method for concrete porosity under steel plate with neutron technology |
| CN1851137A (en) * | 2006-04-27 | 2006-10-25 | 中铁一局集团有限公司 | Gate-type crane semiarch integral-hoisting steel-pipe arch process |
| CN101096846A (en) * | 2007-06-13 | 2008-01-02 | 中国水电顾问集团华东勘测设计研究院 | Prefabricated formwork of concrete flow passage gradual change rounded corner segment top board construction and construction process thereof |
-
2010
- 2010-06-03 CN CN2010101907554A patent/CN101852017B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073013A (en) * | 1992-11-17 | 1993-06-09 | 水利部交通部能源部南京水利科学研究院 | Detect the method for concrete porosity under steel plate with neutron technology |
| CN1851137A (en) * | 2006-04-27 | 2006-10-25 | 中铁一局集团有限公司 | Gate-type crane semiarch integral-hoisting steel-pipe arch process |
| CN101096846A (en) * | 2007-06-13 | 2008-01-02 | 中国水电顾问集团华东勘测设计研究院 | Prefabricated formwork of concrete flow passage gradual change rounded corner segment top board construction and construction process thereof |
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| Publication number | Publication date |
|---|---|
| CN101852017B (en) | 2011-08-17 |
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Granted publication date: 20110817 Termination date: 20130603 |