CN104988945B - Hydroenergy storage station unit installation method and temporary support structure - Google Patents
Hydroenergy storage station unit installation method and temporary support structure Download PDFInfo
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- CN104988945B CN104988945B CN201510272500.5A CN201510272500A CN104988945B CN 104988945 B CN104988945 B CN 104988945B CN 201510272500 A CN201510272500 A CN 201510272500A CN 104988945 B CN104988945 B CN 104988945B
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- steel
- liner section
- pit liner
- section
- big footpath
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000005498 polishing Methods 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 16
- 230000003321 amplification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Abstract
The invention discloses efficient hydroenergy storage station unit installation method：The method is first to pour big footpath pit liner section, polishing processing seat ring；Complete after big footpath pit liner section pours, bracing members to be installed and simultaneously lifts base ring；Then pour path pit liner section；After seat ring polishing processing is completed, bracing members are removed, bolt connection and welding are carried out to base ring and seat ring.Temporary support structure constructed by foundation preceding method, including big footpath pit liner section (1) and path pit liner section (2)；Big footpath pit liner section (1) is internally provided with seat ring (3), some bracing members and base ring (4), the internal diameter with diameter greater than path pit liner section (2) of base ring (4)；Bracing members include encorbelment I-steel (5) and diagonal brace I-steel (6), and the angle of inclination of diagonal brace I-steel (6) is 25 °～35 °.The present invention not only has the advantages that safe, stability is high and efficiency of construction is high, additionally it is possible to the integral construction duration is greatly shortened.
Description
Technical field
The present invention relates to a kind of hydroenergy storage station unit installation method and temporary support structure, particularly a kind of construction effect
The high hydroenergy storage station unit installation method of rate and temporary support structure.
Background technology
During hydroenergy storage station unit installation, need first by machine cheat in seat ring each flange face and seam enter
Row machining polishing, this generally 30～40 days operation polishing times, can just carry out the base ring and machine of the hydraulic turbine after the completion of polishing
The bolt connection between seat ring and welding in hole.As the internal diameter of path pit liner section above is less than the straight of base ring
Footpath, and base ring is overall structure, so existing hydroenergy storage station unit installation orientation is first to pour big footpath pit liner section,
Then the polishing processing of seat ring is carried out, after the completion of polishing base ring is lifted into machine and is cheated and be connected with seat ring, finally pour path machine
Hole back boxing section；So that the processing that pours of path pit liner section needs to wait base ring polishing to be carried out after machining again, cause to apply
The prolongation of the idle and overall hydroenergy storage station unit installation duration of workman person.Therefore, existing hydroenergy storage station unit
Construction method has that efficiency of construction is relatively low and the integral construction duration is longer.
The content of the invention
It is an object of the present invention to provide a kind of hydroenergy storage station unit installation method and temporary support structure.This
It is bright not only to have the advantages that safe and efficiency of construction is high, additionally it is possible to shorten the integral construction duration.
Technical scheme：Hydroenergy storage station unit installation method, the method are first to carry out big footpath pit liner
The concreting of section, carries out polishing processing to seat ring；After the concreting for completing big footpath pit liner section, steel is installed
Support simultaneously lifts base ring on bracing members；After the completion of lifting base ring, the concreting of path pit liner section is carried out；Complete seat ring
After polishing processing, bracing members are removed, base ring is lifted to seat ring carries out bolt connection and welding.
In aforesaid hydroenergy storage station unit installation method, the polishing processing of the seat ring is time-consuming 30～40 days.
According in the temporary support structure constructed by aforesaid hydroenergy storage station unit installation method, including big footpath machine hole
Lining section and the path pit liner section positioned at big footpath pit liner section upper end；Big footpath pit liner section is internally provided with seat ring,
The inside of big footpath pit liner section is also connected with base ring by some bracing members, base ring with diameter greater than path pit liner section
Internal diameter；Each bracing members includes encorbelmenting I-steel and diagonal brace I-steel, diagonal brace I-steel be located at below I-steel of encorbelmenting and
Connect I-steel of encorbelmenting, the angle of inclination of diagonal brace I-steel is 25 °～35 °.
In aforesaid temporary support structure, the I-steel of encorbelmenting includes the hanging section on the inside of big footpath pit liner section
With twice of the length more than or equal to suspended length buried dress section, bury dress section on the outside of big footpath pit liner section.
In aforesaid temporary support structure, the angle of inclination of the diagonal brace I-steel is 30 °.
In aforesaid temporary support structure, the base ring and bracing members are respectively positioned on the top of seat ring, between base ring and seat ring
The machine of being additionally provided with is cheated into people's gallery.
Compared with prior art, present invention improves over the construction method of hydroenergy storage station unit devising temporary support
Structure；The concreting of big footpath pit liner section is first carried out, polishing processing is carried out to seat ring；Complete big footpath pit liner section
Concreting after, bracing members are installed base ring are lifted on bracing members simultaneously；After the completion of lifting base ring, path pit liner is carried out
The concreting of section；Complete seat ring polishing processing after, remove bracing members, base ring is lifted to seat ring carry out bolt connection and
Welding.The present invention carries out temporary support to base ring by installing bracing members such that it is able to while seat ring polishing processing is carried out
The concreting work of path pit liner section is carried out, efficiency of construction is improve；Pour the concrete of path pit liner section
Build work 30～40 days in advance, the integral construction duration has been greatly shortened.The present invention sets I-steel of encorbelmenting by force analysis
Bury dress segment length more than or equal to suspended length twice, it is ensured that can safely and effectively support base ring；By encorbelmenting
Connect diagonal brace I-steel below I-steel, and the angle of inclination of diagonal brace I-steel is 25 °～35 °, improves the stability of structure, enters
One step improves security.Therefore, the present invention not only has the advantages that safe, stability is high and efficiency of construction is high, additionally it is possible to
The integral construction duration is greatly shortened.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A.
Mark in accompanying drawing for：The big footpath pit liner sections of 1-, 2- path pit liner sections, 3- seat rings, 4- base rings, 5- are encorbelmented
I-steel, 6- diagonal brace I-steel, the hanging sections of 7-, 8- bury dress section, and 9- machines are cheated into people's gallery.
Specific embodiment
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited to the present invention.
Embodiment.Hydroenergy storage station unit installation method, as shown in Figure 1, 2, the method is first carried out in big footpath machine hole
The concreting of lining section 1, carries out polishing processing to seat ring 3；After the concreting for completing big footpath pit liner section 1, peace
Steel loading supports and base ring 4 is lifted on bracing members；After the completion of lifting base ring 4, the concrete for carrying out path pit liner section 2 is poured
Build；After completing the polishing processing of seat ring 3, bracing members are removed, base ring 4 is lifted to seat ring 3 carries out bolt connection and welding.
The polishing processing of the seat ring 3 is time-consuming 30～40 days.
According to the temporary support structure constructed by aforesaid hydroenergy storage station unit installation method, constitute such as Fig. 1,2 institutes
Show, including big footpath pit liner section 1 and the path pit liner section 2 positioned at big 1 upper end of footpath pit liner section；Big footpath pit liner
Section 1 is internally provided with seat ring 3, and the inside of big footpath pit liner section 1 is also connected with base ring 4, base ring 4 by the bracing members of 8
The internal diameter with diameter greater than path pit liner section 2；Each bracing members includes encorbelment I-steel 5 and diagonal brace I-steel 6, diagonal brace
I-steel 6 is located at below I-steel 5 of encorbelmenting and connects I-steel 5 of encorbelmenting, and the angle of inclination of diagonal brace I-steel 6 is 25 °～35 °.
The I-steel 5 of encorbelmenting includes the hanging section 7 on the inside of big footpath pit liner section 1 and is located at big footpath pit liner
Twice of the length more than or equal to 7 length of hanging section buried dress section 8, bury dress section 8 on the outside of section 1, the length for burying dress section 8 is 1m,
7 length of hanging section is 2m；The angle of inclination of the diagonal brace I-steel 6 is 30 °；The base ring 4 and bracing members are respectively positioned on seat ring 3
Top, the machine that is additionally provided between base ring 4 and seat ring 3 are cheated into people's gallery 9.
The present invention carries out temporary support to base ring 4 by installing bracing members such that it is able to carrying out the polishing processing of seat ring 3
The concreting work of path pit liner section 2 is carried out simultaneously, improves efficiency of construction；Make the mixed of path pit liner section 2
Solidifying soil pours work 30～40 days in advance, and the integral construction duration has been greatly shortened.The angle of inclination of diagonal brace I-steel 6 is 30 °,
Not only guarantee to play larger supporting role to I-steel 5 of encorbelmenting, additionally it is possible to ensure diagonal brace I-steel 6 from big footpath machine hole
Connective stability in lining section 1.
Safety analysis：
If the deadweight total load head of base ring 4 is 80t；Workmen is 5 people, and it is 5* that everyone calculates then load by body weight 75Kg
75Kg*10=3.75KN；Construction equipment load is 3KN；Dynamic load is 2KN；Other loads are 1KN；In view of nonuniformity coefficient
1.3 are taken, dynamic load coefficient takes 2.0, therefore total load head is G=800+ (3.75+3+2+1) * 1.3*2=825.35KN；Respectively
Obtain to 8 I-steel 5 of encorbelmenting and 5 load of I-steel is encorbelmented per root for 103.17KN.
Take single I-steel 5 of encorbelmenting to be calculated：I-steel 5 of encorbelmenting selects I25b I-steel, and amplification coefficient of conducting oneself with dignity is
1.2, outer cantilever span presses 1m；Web total thickness 10mm, plasticity coefficient are 1.05, and integral stability factor is 0.6.By maximum wall
Thick 13mm is obtained：Section tension resistance bending strength design load f=215MPa, section shearing strength design load fv=125MPa are cut
Power maximum is 103.674KN, and moment of flexure maximum is 51.837KN.M, and maximum defluxion is 1.19146mm；Calculate maximum cut should
Power is 48.0079MPa, and strength stress is 116.876MPa, and stable stress is 204.534MPa, is satisfied by.
Take single diagonal brace I-steel 6 to be calculated：Diagonal brace I-steel 6 selects I16 I-steel, and deadweight amplification coefficient is 1.2,
Span is equal to the outer cantilever span of I-steel 5 of encorbelmenting；Maximum shear stress is obtained ibid for 30.0049MPa, strength stress is
29.2191MP, stable stress is 51.1334MPa.Safety coefficient is 204.534/51.1334=4, and safety coefficient improves 4 times,
I.e. security improves 4 times, and safety and stability is good.
Claims (6)
1. hydroenergy storage station unit installation method, it is characterised in that：The method is the coagulation for first carrying out big footpath pit liner section
Soil is poured, and carries out polishing processing to seat ring；After the concreting for completing big footpath pit liner section, bracing members are installed and in steel
Base ring is lifted in support；After the completion of lifting base ring, the concreting of path pit liner section is carried out；Complete seat ring polishing processing
Afterwards, bracing members are removed, base ring is lifted to seat ring carries out bolt connection and welding.
2. hydroenergy storage station unit installation method according to claim 1, it is characterised in that：The polishing of the seat ring adds
Work is time-consuming 30～40 days.
3., according to the temporary support structure constructed by the hydroenergy storage station unit installation method described in claim 1 or 2, which is special
Levy and be：Including big footpath pit liner section (1) and path pit liner section (2) positioned at big footpath pit liner section (1) upper end；Greatly
Footpath pit liner section (1) is internally provided with seat ring (3), and the inside of big footpath pit liner section (1) also passes through some bracing members
It is connected with base ring (4), the internal diameter with diameter greater than path pit liner section (2) of base ring (4)；Each bracing members includes work of encorbelmenting
Word steel (5) and diagonal brace I-steel (6), diagonal brace I-steel (6) is below I-steel of encorbelmenting (5) and connection is encorbelmented I-steel (5),
The angle of inclination of diagonal brace I-steel (6) is 25 °～35 °.
4. temporary support structure according to claim 3, it is characterised in that：The I-steel of encorbelmenting (5) includes being located at greatly
Hanging section (7) and burying on the outside of big footpath pit liner section (1) on the inside of footpath pit liner section (1) fills section (8), buries dress section
(8) twice of the length more than or equal to hanging section (7) length.
5. temporary support structure according to claim 3, it is characterised in that：The angle of inclination of the diagonal brace I-steel (6)
For 30 °.
6. the temporary support structure according to claim 3,4 or 5, it is characterised in that：The base ring (4) and the equal position of bracing members
Machine is additionally provided between the top of seat ring (3), base ring (4) and seat ring (3) to cheat into people's gallery (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510272500.5A CN104988945B (en) | 2015-05-25 | 2015-05-25 | Hydroenergy storage station unit installation method and temporary support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510272500.5A CN104988945B (en) | 2015-05-25 | 2015-05-25 | Hydroenergy storage station unit installation method and temporary support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104988945A CN104988945A (en) | 2015-10-21 |
| CN104988945B true CN104988945B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510272500.5A Active CN104988945B (en) | 2015-05-25 | 2015-05-25 | Hydroenergy storage station unit installation method and temporary support structure |
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| CN109268629B (en) * | 2018-11-26 | 2024-01-19 | 国家电网有限公司 | Temporary supporting structure for bottom ring of energy storage power station unit |
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| CN101392518B (en) * | 2008-10-28 | 2012-09-19 | 成都阿朗科技有限责任公司 | Diversion conduit rapid construction method of large hydraulic turbines |
| CN102296577B (en) * | 2011-05-27 | 2012-07-04 | 长江勘测规划设计研究有限责任公司 | Embedding technology of volute combination of large hydroelectric generating set |
| CN104100437B (en) * | 2014-06-26 | 2015-04-01 | 中国葛洲坝集团股份有限公司 | Lower bracket mounting foundation positioning device and method of hydroelectric generating set |
| CN204023608U (en) * | 2014-08-18 | 2014-12-17 | 北京燃气能源发展有限公司 | A kind of generating set of cold, heat and electricity triple supply is installed basis |
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