CN101586465B - Construction method of large-diameter coal bunker flat-topping lid - Google Patents

Construction method of large-diameter coal bunker flat-topping lid Download PDF

Info

Publication number
CN101586465B
CN101586465B CN2009100745390A CN200910074539A CN101586465B CN 101586465 B CN101586465 B CN 101586465B CN 2009100745390 A CN2009100745390 A CN 2009100745390A CN 200910074539 A CN200910074539 A CN 200910074539A CN 101586465 B CN101586465 B CN 101586465B
Authority
CN
China
Prior art keywords
steel
coal bunker
shaped steel
girder
sliding formwork
Prior art date
Application number
CN2009100745390A
Other languages
Chinese (zh)
Other versions
CN101586465A (en
Inventor
王鹏
李树昆
任凤臣
孙桢
郭子健
郭少江
李侠军
Original Assignee
中煤建筑安装工程公司第六十九工程处
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中煤建筑安装工程公司第六十九工程处 filed Critical 中煤建筑安装工程公司第六十九工程处
Priority to CN2009100745390A priority Critical patent/CN101586465B/en
Publication of CN101586465A publication Critical patent/CN101586465A/en
Application granted granted Critical
Publication of CN101586465B publication Critical patent/CN101586465B/en

Links

Abstract

The present invention discloses a construction method of a large-diameter coal bunker flat-topping lid, which comprises the following technical processes: 1. confirming the positions of the H-shape steel and the slip-form platform, 2. pre-embedding a steel plate in the inner bulkhead of the coal bunker, 3. pre-embedding the steel lattice structural column on the bulkhead ring beam of the coal bunker, 4. lowering the slip-form platform; 5. fixing the slip-form platform; 6. welding and fixing the steel corbel of the H-shape steel, 7. fixing the H-shape steel in position; 8. reinforcing the H-shape steel; 9. installing a bunker top main-beam formwork; 10. binding the main-beam reinforcement steel bars; 11. pouring the main-beam concrete; 12. constructing the secondary beam and the roof plate; and 13. detaching the formwork and the supporting system. The construction method of the large-diameter coal bunker flat-topping lid according to the invention has the advantages of no requirement for building full hall scaffold in the bunker, high work efficiency, short construction period, low construction cost, reliably safety and remarkable economic benefit.

Description

A kind of construction method of large-diameter coal bunker flat-topping lid
Technical field
The present invention relates to a kind of construction techniques, especially a kind of construction method of large-diameter coal bunker flat-topping lid.
Background technology
At present, in the large-diameter coal bunker flat-topping lid structure construction, use scaffold to set up Cang Ding from ground always, fix big beam forms and secondary beam and storehouse top template, long construction period, construction cost height, and safety is low.Therefore, designing a kind of short construction period, low, the safe construction method of large-diameter coal bunker flat-topping lid of construction cost, is the present technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention provides a kind of short construction period, low, the safe construction method of large-diameter coal bunker flat-topping lid of construction cost.
The technical scheme that the present invention solves its technical problem is:
A kind of construction method of large-diameter coal bunker flat-topping lid, its processing step is: 1. determining of H shaped steel and sliding formwork position of platform, and 2. coal bunker inner barn wall pre-embedded steel slab, 3. steel lattice column is pre-buried on the coal bunker bulkhead collar tie beam, 4. the sliding formwork platform descends, 5. the sliding formwork platform is fixed, and 6. welds the fixedly steel corbel of H shaped steel, and 7. H shaped steel is in place, 8. H section steel reinforcement, 9. girder template in top, storehouse is installed, 10. the girder reinforcing bar binding Main beam concrete is built, Secondary beam and top board construction, Template and support system are removed.
The technical scheme that the present invention solves its technical problem can also be:
Definite step of H shaped steel of the present invention and sliding formwork position of platform is specifically to determine the position of H shaped steel and sliding formwork platform at the design attitude of coal bunker according to coal bunker flat-topping lid main girder (8), described coal bunker inner barn wall pre-embedded steel slab step is for when the coal bunker bulkhead is poured into the precalculated position of H shaped steel and sliding formwork platform, the steel plate of the steel plate of pre-buried fixedly H shaped steel and sliding formwork platform on the inner barn wall of coal bunker bulkhead, the pre-buried step of described steel lattice column is for when building the apical ring beam of coal bunker bulkhead, the pre-buried steel lattice column that exceeds the ring beam top on the coal bunker bulkhead apical ring beam of the both sides of storehouse lid main girder, described sliding formwork platform decline step is for after the coal bunker bulkhead apical ring beam of building solidifies, it is the sliding formwork position of platform that the sliding formwork platform is dropped to the following precalculated position of lid main girder lower plane, storehouse, described sliding formwork platform fixing step is for after the sliding formwork platform drops to the precalculated position, fix the sliding formwork platform by welding sliding formwork platform steel corbel on steel plate pre-buried on the inner barn wall of coal bunker bulkhead, the described welding fixedly steel corbel step of H shaped steel is to weld the fixedly steel corbel of H shaped steel on the pre-buried steel plate of the inner barn wall of coal bunker bulkhead, described H shaped steel step in place is for after steel corbel welds, lift H shaped steel on the steel corbel and weld fixation steel plate and fix, described H section steel reinforcement step is for welding suspension centre on H shaped steel, utilize wire rope by wire clips fixing oblique rope between suspension centre and steel lattice column, top, described storehouse girder template installation steps are for passing through in the vertical rod of H shaped steel upper support, bridging is set between vertical rod fixes the girder soffit formwork, described girder reinforcing bar binding step is to design according to main beam structure, according to the technical requirements of " concrete structure engineering construction quality standards of acceptance " GB50204-2002 to reinforcing bar binding, carry out the layout and the colligation of girder reinforcing bar, described main beam concrete is built step for to support at the girder soffit formwork, the technical requirements of according to " concrete structure engineering construction quality standards of acceptance " GB50204-2002 main beam concrete being built after fixedly finishing, layering, building of main beam concrete carried out in gradation, described secondary beam and top board construction step are installed and reinforcing bar binding for the template of building finish laggard places beam and top board at main beam concrete, carry out the concreting of secondary beam and top board again, described template and support system are removed step for treating girder, be girder after the secondary beam concrete solidifies fully, the secondary beam concrete strength reaches 100% o'clock of design strength, wire rope is unclamped and extract, remove the girder template, secondary beam and roof plate template, H shaped steel, and the steel lattice column exposed parts cut off.
The present invention is in main beam concrete pouring construction process, concreting is carried out in layering, gradation, forbid to touch template and reinforcing bar when vibrating, and build preceding, build neutralization and respectively the stress deformation of H shaped steel monitored after building, at girder four observation points are set vertically, measure once before building, measure once again after building half, measure once again after having built, and stay surveying record.
The present invention is the elongated twice H shaped steel that is provided with under the per pass girder supports, H shaped steel is apart from sliding formwork platform 300mm height, be connected firmly with channel-section steel every 2 meters between the H shaped steel and between H shaped steel and the bulkhead, channel-section steel and the welding of H shaped steel are fixing, and described suspension centre is arranged on the position of H shaped steel and determines according to calculating.
The support of secondary beam of the present invention and top board utilizes diagonal brace, and the template springing height is by designing requirement, and secondary beam and concrete roof are built together.
The invention has the beneficial effects as follows:
Utilize the principle of cable stayed bridge, the H shaped steel of the wide bed at the bottom of the beam is carried out multiple tracks tiltedly draw, make its requirement of satisfying concrete main girder working load, its structural system is simple, and is stressed clear and definite, is convenient to the foundation and the calculating of computation model.
The sliding formwork platform is reduced to desired location, only uses as material loading and operating platform, and it is stressed little, safe and reliable.
Need not to set up in the storehouse full hall scaffold, improved work efficiency, shortened the construction period, reduced construction cost.
Compare with conventional construction method, high-rise working is safe and reliable, has guaranteed construction quality, and speed of application is significantly accelerated, and reduces the use of circulation material in a large number, has reduced labor strength, remarkable in economical benefits.
Description of drawings
Fig. 1 is the schematic diagram that tiltedly draws of the present invention;
Fig. 2 is that steel lattice column of the present invention is arranged schematic diagram;
Fig. 3 is that principle and the girder template of tiltedly drawing of the present invention supports schematic diagram;
Fig. 4 is that girder template of the present invention supports schematic diagram;
Fig. 5 is the support schematic diagram of prior art;
Technological principle of the present invention:
Utilize the principle of cable-stayed bridge (according to stressed calculating, select corresponding H shaped steel, steel wire rope, wire clips, determine the oblique pull suspension centre), wide bed H shaped steel below the lid main girder of flat-top storehouse, and utilize bulkhead structural strength height, advantage that rigidity is big, at bulkhead top pre-buried steel lattice column as suspension centre, by steel wire rope to H shaped steel multiple tracks oblique pull, make its requirement of satisfying bearing capacity, with its supporting member as concrete main girder formwork, casting concrete.
The specific embodiment
A kind of construction method of large-diameter coal bunker flat-topping lid, its processing step is: 1. determining of H shaped steel and sliding formwork position of platform, and 2. coal bunker inner barn wall pre-embedded steel slab, 3. steel lattice column is pre-buried on the coal bunker bulkhead ring beam, 4. the sliding formwork platform descends, 5. the sliding formwork platform is fixed, and 6. welds the fixedly steel corbel of H shaped steel, and 7. H shaped steel is in place, 8. H section steel reinforcement, 9. girder template in top, storehouse is installed, 10. the girder reinforcing bar binding Main beam concrete is built, Secondary beam and top board construction, Template and support system are removed.Definite step of described H shaped steel and sliding formwork position of platform is specifically to determine the position of H shaped steel and sliding formwork platform at the design attitude of coal bunker according to coal bunker flat-topping lid main girder 8, described coal bunker inner barn wall pre-embedded steel slab step is for when coal bunker bulkhead 5 is poured into the precalculated position of H shaped steel 4 and sliding formwork platform 2, the steel plate of the steel plate 3 of pre-buried fixedly H shaped steel 4 and sliding formwork platform 2 on the inner barn wall of coal bunker bulkhead 5, the pre-buried step of described steel lattice column is for when building the apical ring beam of coal bunker bulkhead 5, the pre-buried steel lattice column 6 that exceeds the ring beam top on the coal bunker bulkhead apical ring beam of the both sides of storehouse lid main girder 8, described sliding formwork platform decline step is for after the coal bunker bulkhead apical ring beam of building solidifies, it is the sliding formwork position of platform that sliding formwork platform 2 is dropped to the following precalculated position of lid main girder 8 lower planes, storehouse, described sliding formwork platform fixing step is for after sliding formwork platform 2 drops to the precalculated position, fix sliding formwork platform 2 by welding sliding formwork platform steel corbel 1 on steel plate pre-buried on the inner barn wall of coal bunker bulkhead 5, the described welding fixedly steel corbel step of H shaped steel is to weld the fixedly steel corbel 9 of H shaped steel 4 on the pre-buried steel plate 3 of the inner barn wall of coal bunker bulkhead 5, described H shaped steel step in place is after steel corbel 9 welding are good, lift H shaped steel 4 on the steel corbel 9 and weld fixation steel plate and fix, described H section steel reinforcement supports step for weld suspension centre on H shaped steel, utilize wire rope by wire clips fixing oblique rope 7 between suspension centre and steel lattice column 6, top, described storehouse girder template installation steps are for passing through in the vertical rod of H shaped steel upper support, bridging is set between vertical rod fixes the girder soffit formwork, described girder reinforcing bar binding step is to design according to main beam structure, according to the technical requirements of " concrete structure engineering construction quality standards of acceptance " GB50204-2002 to reinforcing bar binding, carry out the layout and the colligation of girder reinforcing bar, described main beam concrete is built step for to support at the girder soffit formwork, the technical requirements of according to " concrete structure engineering construction quality standards of acceptance " GB50204-2002 main beam concrete being built after fixedly finishing, layering, building of main beam concrete carried out in gradation, described secondary beam and top board construction step utilize support and diagonal brace fixedly to build the template of secondary beam and top board on H shaped steel and sliding formwork platform 2 for build the back that finishes at main beam concrete, the template fixation, after the assembling reinforcement, carrying out secondary beam and top board again must build, described template and support system are removed step for treating girder, be girder after the secondary beam concrete solidifies fully, the secondary beam concrete strength reaches 100% o'clock of design strength, wire rope is unclamped and extract, remove the girder template, secondary beam and roof plate template, H shaped steel, and the steel lattice column exposed parts cut off.In main beam concrete pouring construction process, concreting is carried out in layering, gradation, forbid to touch template and reinforcing bar when vibrating, and build preceding, build neutralization and respectively the stress deformation of H shaped steel monitored after building, at girder four observation points are set vertically, measure once before building, measure once again after building half, measure once again after having built, and stay surveying record.The elongated twice H shaped steel that is provided with under the per pass girder supports, H shaped steel is apart from sliding formwork platform 300mm height, be connected firmly with channel-section steel every 2 meters between the H shaped steel and between H shaped steel and the bulkhead, channel-section steel and the welding of H shaped steel are fixing, and described suspension centre is arranged on the position of H shaped steel and determines according to calculating.The support of secondary beam and top board utilizes diagonal brace, and the template springing height is by designing requirement, and secondary beam and concrete roof are built together.

Claims (5)

1. construction method of large-diameter coal bunker flat-topping lid, it is characterized in that: its processing step is: 1. determining of H shaped steel and sliding formwork position of platform, and 2. coal bunker inner barn wall pre-embedded steel slab, 3. steel lattice column is pre-buried on the coal bunker bulkhead ring beam, 4. the sliding formwork platform descends, 5. the sliding formwork platform is fixed, and 6. welds the fixedly steel corbel of H shaped steel, and 7. H shaped steel is in place, 8. H section steel reinforcement, 9. girder template in top, storehouse is installed, 10. the girder reinforcing bar binding Main beam concrete is built, Secondary beam and top board construction, Template and support system are removed.
2. a kind of construction method of large-diameter coal bunker flat-topping lid according to claim 1, it is characterized in that: definite step of described H shaped steel and sliding formwork position of platform is for specifically determining the position of H shaped steel and sliding formwork platform at the design attitude of coal bunker according to coal bunker flat-topping lid main girder (8), described coal bunker inner barn wall pre-embedded steel slab step is for when coal bunker bulkhead (5) is poured into the precalculated position of H shaped steel (4) and sliding formwork platform (2), the steel plate of the steel plate (3) of pre-buried fixedly H shaped steel (4) and sliding formwork platform (2) on the inner barn wall of coal bunker bulkhead (5), the pre-buried step of described steel lattice column is for when building the apical ring beam of coal bunker bulkhead (5), the pre-buried steel lattice column (6) that exceeds the ring beam top on the coal bunker bulkhead apical ring beam of the both sides of storehouse lid main girder (8), described sliding formwork platform decline step is for after the coal bunker bulkhead apical ring beam of building solidifies, it is the sliding formwork position of platform that sliding formwork platform (2) is dropped to the following precalculated position of lid main girder (8) lower plane, storehouse, described sliding formwork platform fixing step is for after sliding formwork platform (2) drops to the precalculated position, fix sliding formwork platform (2) by welding sliding formwork platform steel corbel (1) on steel plate pre-buried on the inner barn wall of coal bunker bulkhead (5), the described welding fixedly steel corbel step of H shaped steel is to go up the fixedly steel corbel (9) of H shaped steel (4) of welding at the pre-buried steel plate (3) of the inner barn wall of coal bunker bulkhead (5), described H shaped steel step in place is after steel corbel (9) welding is good, H shaped steel (4) lifted steel corbel (9) is gone up and the welding fixation steel plate is fixed, described H section steel reinforcement supports step for weld suspension centre on H shaped steel, utilize wire rope by wire clips fixing oblique rope (7) between suspension centre and steel lattice column (6), top, described storehouse girder template installation steps are for passing through in the vertical rod of H shaped steel upper support, bridging is set between vertical rod fixes the girder soffit formwork, described girder reinforcing bar binding step is to design according to main beam structure, according to the technical requirements of " concrete structure engineering construction quality standards of acceptance " GB50204-2002 to reinforcing bar binding, carry out the layout and the colligation of girder reinforcing bar, described main beam concrete is built step for to support in the girder template, after fixing and reinforcing bar binding finishes, the technical requirements of main beam concrete being built according to " concrete structure engineering construction quality standards of acceptance " GB50204-2002, layering, building of main beam concrete carried out in gradation, described secondary beam and top board construction step are installed and reinforcing bar binding for the template of building finish laggard places beam and top board at main beam concrete, carry out the concreting of secondary beam and top board again, described template and support system are removed step for treating girder, be girder after the secondary beam concrete solidifies fully, the secondary beam concrete strength reaches 100% o'clock of design strength, wire rope is unclamped and extract, remove the girder template, secondary beam and roof plate template, H shaped steel, and the steel lattice column exposed parts cut off.
3. a kind of construction method of large-diameter coal bunker flat-topping lid according to claim 2, it is characterized in that: in main beam concrete pouring construction process, concreting is carried out in layering, gradation, forbid to touch template and reinforcing bar when vibrating, and build preceding, build neutralization and respectively the stress deformation of H shaped steel monitored after building, at girder four observation points are set vertically, measure once before building, measure once again after building half, measure once again after having built, and stay surveying record.
4. a kind of construction method of large-diameter coal bunker flat-topping lid according to claim 3, it is characterized in that: the elongated twice H shaped steel that is provided with under the per pass girder supports, H shaped steel is apart from sliding formwork platform 300mm height, be connected firmly with channel-section steel every 2 meters between the H shaped steel and between H shaped steel and the bulkhead, channel-section steel and the welding of H shaped steel are fixing, and described suspension centre is arranged on the position of H shaped steel and determines according to calculating.
5. a kind of construction method of large-diameter coal bunker flat-topping lid according to claim 4 is characterized in that: the support of secondary beam and top board utilizes diagonal brace, and the template springing height is by designing requirement, and secondary beam and concrete roof are built together.
CN2009100745390A 2009-06-24 2009-06-24 Construction method of large-diameter coal bunker flat-topping lid CN101586465B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100745390A CN101586465B (en) 2009-06-24 2009-06-24 Construction method of large-diameter coal bunker flat-topping lid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100745390A CN101586465B (en) 2009-06-24 2009-06-24 Construction method of large-diameter coal bunker flat-topping lid

Publications (2)

Publication Number Publication Date
CN101586465A CN101586465A (en) 2009-11-25
CN101586465B true CN101586465B (en) 2011-05-04

Family

ID=41370869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100745390A CN101586465B (en) 2009-06-24 2009-06-24 Construction method of large-diameter coal bunker flat-topping lid

Country Status (1)

Country Link
CN (1) CN101586465B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110685483A (en) * 2019-09-06 2020-01-14 中国电建集团河北工程有限公司 Large-scale coal storage bin top plate prefabricating and assembling method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102561670B (en) * 2011-12-23 2014-09-24 国合建设集团有限公司 Support device for squat silo roof steel truss
CN103257040B (en) * 2013-05-08 2016-04-20 长沙理工大学 Tunnel blower supporting structure loading test device
CN103898835B (en) * 2014-03-02 2015-11-11 葛洲坝集团第一工程有限公司 The anti-back of the body of bridge draws load-bearing construction bracket and construction method
CN103912125A (en) * 2014-04-14 2014-07-09 中国十五冶金建设集团有限公司 Large-sized towering tubular-structure concrete roof pouring method
CN105629933A (en) * 2015-12-29 2016-06-01 清华大学 Raw coal bunker coal level layered monitoring method and system and power plant decentralized control method
CN107448042A (en) * 2016-05-30 2017-12-08 五冶集团上海有限公司 Without top cover steel feed bin top frame platform formwork, release method
CN108678181B (en) * 2018-05-28 2020-08-21 中国二十二冶集团有限公司 High-altitude construction method for steel truss and concrete combined structure on top of bin

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
李承军.大直径直立井底煤仓的设计与施工.《能源技术与管理》.2007,(第01期), *
李继强等.许厂煤矿430采区煤仓设计优化与施工.《建井技术》.2004,(第04期), *
李镇中.截圆锥壳圆筒仓盖设计计算.《煤炭工程》.1982,(第11期), *
蒲维民.直径40m圆筒煤仓结构优化设计.《煤矿设计》.1995,(第06期), *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110685483A (en) * 2019-09-06 2020-01-14 中国电建集团河北工程有限公司 Large-scale coal storage bin top plate prefabricating and assembling method

Also Published As

Publication number Publication date
CN101586465A (en) 2009-11-25

Similar Documents

Publication Publication Date Title
CN104695337B (en) Self-lifting sliding and turnover construction system and construction method
CN106677069B (en) A kind of construction method of bridge pier integral formwork support one-shot forming structure
CN101818570B (en) Method for constructing girder structure conversion layer of high-rise building
CN100526573C (en) Construction method of structure conversion layer concrete girder steel bracket formwork support
CN100545363C (en) Structure conversion layer type steel concrete girder mould suspension construction method
CN103206089A (en) Fabricated aluminum alloy formwork system construction method
CN100572011C (en) Post-tensioned method prestressed concrete box beam whole opening prefabricated construction method
CN102677889B (en) System for alternatively supporting whole lifting steel platform formwork by steel column casing rack and construction method
KR101227715B1 (en) Structure for SRC structured high rise building
CN103195256B (en) Hanging column type steel structure jig frame construction method
CN105401679B (en) Heavy grade cast-in-place concrete Sloping roof construction method
CN101659082B (en) System for integral binding and integral hoisting of steel bar framework of box beam and construction method thereof
CN205875473U (en) Built -in location prefab reinforced concrete shear wall
CN202359506U (en) Double hoop supporting system for pier column capping beam
CN102619331B (en) Once molding construction method of beam-type conversion layer of high-rise building by steel pipe supporting and laminated pouring
CN102535845A (en) Construction method of bearing frame of corridor structure
CN103485283A (en) Hanging bracket supporting system of side-span cast-in-place section and implementation method thereof
CN201614738U (en) Support device for mould board assembly of steel reinforced concrete transfer beams
CN101922143B (en) Construction method of bent cap
CN105113388B (en) Formwork and bracket combining structure of vase pier of viaduct and application method
CN202658536U (en) Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section
CN103935911B (en) Tower crane attached wall supporting construction and construction method thereof
CN104878693A (en) Lateral girder erection and construction method for truss double-girder type bridge girder erection machine
JP2008274637A (en) Construction method for continuous viaduct
CN102444203A (en) High-altitude long-span overhanging corridor type reinforced concrete structure and construction method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 056003 HANDAN, HEBEI PROVINCE TO: 056002 HANDAN, HEBEI PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20121011

Address after: 056002 Hebei Province, Handan city Congtai Road No. 56

Patentee after: China Coal Building & Installation Engineering Group Co., Ltd.

Address before: 056003 Hebei city of Handan province Lianfang Road

Patentee before: China Coal Building and Installation Engineering Company No.69 Engineering Office

ASS Succession or assignment of patent right

Owner name: CHINA COAL BUILDING + INSTALLING ENGINEERING GROUP

Free format text: FORMER OWNER: CHINA COAL BUILDING AND INSTALLATION ENGINEERING COMPANY NO.69 ENGINEERING OFFICE

Effective date: 20121011

C41 Transfer of patent application or patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110504

Termination date: 20180624

CF01 Termination of patent right due to non-payment of annual fee