CN109653536A - A kind of large volume arc concrete steel lattice supporting framework and its construction method - Google Patents
A kind of large volume arc concrete steel lattice supporting framework and its construction method Download PDFInfo
- Publication number
- CN109653536A CN109653536A CN201910077429.3A CN201910077429A CN109653536A CN 109653536 A CN109653536 A CN 109653536A CN 201910077429 A CN201910077429 A CN 201910077429A CN 109653536 A CN109653536 A CN 109653536A
- Authority
- CN
- China
- Prior art keywords
- steel
- boom
- truss
- lower boom
- web member
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- Legal status (The legal status 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 status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/02—Shores or struts; Chocks non-telescopic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded elements
Abstract
The invention discloses a kind of large volume arc concrete steel lattice supporting framework and its construction method, support construction that steel truss support structure is made of more Pin truss disposed in parallel；Every truss structure includes web member (1), top boom (2), lower boom (3), connecting rod (4), high-strength bolt (5), oil support (6), the lumps of wood (7) and bamboo slab rubber (8)；Top boom is the bar steel plate of embowment, and lower boom includes the perpendicular steel of two sides and the horizontal steel that connect with the two sides bottom Shu Gang, more web members is provided between top boom and lower boom, the both ends of every web member pass through high-strength bolt respectively and connect with top boom and lower boom；The top of top boom is provided with bamboo slab rubber and the lumps of wood；The bottom of lower boom connects oil support；Lower boom is connected with connecting rod by high-strength bolt, is connected between two adjacent truss structures by connecting rod.The present invention is suitable for various large volume arcuate structure concrete one-piece castings, and working procedure is succinct, highly-safe, easy for assemble or unload, and construction efficiency is high, reusable.
Description
Technical field
The invention belongs to civil construction fields, are related to a kind of large volume arc concrete steel lattice supporting framework.
Background technique
Important link of the large-volume concrete formwork construction in building engineering construction, intensity, rigidity, the stability of support
It is more demanding, once the processing that goes wrong is more difficult.Currently known large volume arcuate structure template mainly use bamboo slab rubber,
Flitch, oil support and full hall frame support composition.But for arcuate structure, full hall frame steel pipe adjustment is inconvenient, and upright bar free end is easy super
Code requirement is crossed, supports difficulty big and easy unstability.Also often using disposable setting gang form, cost is high for design.It passes
The full hall frame support system of system has been difficult to meet practice of construction needs.
Summary of the invention
The object of the invention is to provide a kind of large volume arc concrete structure formwork branch in order to solve the above difficulties
Steel truss is supportted, which can not only preferably support cast-in-place concrete dead load and construction loads, and material easily obtains, can
According to structural modeling fabrication and installation, speed of application is fast, is easily guaranteed that quality, is highly-safe.It can also continuously be used in turn to drop
Low construction cost.The purpose of the present invention is what is be achieved through the following technical solutions:
Arc top boom is supported by web member and lower boom.Top boom, web member, lower boom connect into a purlin Pin by high-strength bolt
Frame.It is supported by full hall frame and oil support, is winded up in arc at a support construction by connecting rod drawknot between several truss structures
The setting lumps of wood and bamboo slab rubber above bar.
Specific structure is as follows:
A kind of large volume arc concrete steel lattice supporting framework, the steel truss support structure are disposed in parallel by more Pin
The support construction of truss composition；Every truss structure include web member, top boom, lower boom, connecting rod, high-strength bolt oil support, the lumps of wood and
Bamboo slab rubber；The top boom is the bar steel plate of embowment, and the lower section of top boom is arranged in the lower boom, and lower boom includes
The perpendicular steel of two sides and the horizontal steel connecting with the two sides bottom Shu Gang, are provided with more support angles between the top boom and lower boom
The web member of different, length not etc., the both ends of every web member pass through high-strength bolt respectively and connect with top boom and lower boom；Top boom
Top be provided with bamboo slab rubber identical with top boom crooked radian, the lower surface of bamboo slab rubber is uniformly arranged the muti-piece lumps of wood；Lower edge
The bottom of bar connects oil support；The connecting rod vertical with vertical bar is connected on the vertical bar of lower boom two sides by high-strength bolt, it is adjacent
Two truss structures between pass through connecting rod connect.
Further, the top boom uses, bar steel plate not less than 200mm wide thick not less than 2mm according to concrete
Construction profile processing and fabricating forms, and the drilling of bar steel plate two sides is connect by high-strength bolt with web member.
Further, the lumps of wood and bamboo slab rubber are fixed with iron wire in top boom upper end.
Further, the web member by forming not less than No. 10 channel steels or I-steel both ends welding steel, open by steel plate both ends
Hole is passed through for high-strength bolt, connect web member with top boom or lower boom, and steel plate thickness is not less than 10mm.By adjusting abdomen
The length of bar realizes top boom, the shape of lower boom, size adjusting.
Further, the perpendicular steel of the lower boom and horizontal steel are all made of not less than No. 10 channel steel back sides and are welded with steel plate composition；
The perpendicular steel of lower boom or the horizontal equal throat thickness in steel both ends are not less than the steel plate connector of 10mm, are provided on steel plate connector logical
Hole, the through-hole that high-strength bolt passes through steel plate connector connect the vertical bar of lower boom with cross bar；The two sides of the channel steel of lower boom
Aperture is passed through for high-strength bolt, so that lower boom be made to connect with web member or connecting rod.
Further, lower boom lower end is supported by oil support, while oil support is caught in the channel steel of lower boom, by adjusting oil
Hold in the palm the height of extension elongation adjustment truss.
Further, the connecting rod by forming not less than No. 5 channel steels or I-steel both ends welding steel, open by steel plate both ends
Hole is passed through for high-strength bolt, so that lower boom be made to connect with connecting rod, web member with to connect rod structure similar, design length has
Institute is different, can be general in the case where meeting load and calculating.
The construction method of the large volume arc concrete steel lattice supporting framework, the large volume arc concrete steel
Lattice supporting framework is supported by full hall frame and oil support, including following construction procedure:
1) according to top boom, lower boom and the web member of concrete structure shape and full hall frame production truss: mixed according to arc first
Xtah Crude Clay structure designs top boom bar steel plate size, and the channel steel and steel plate of lower boom are determined according to scene full hall frame support situation
Then size designs truss web size, finally calculate the Stress Check channel steel of truss, the intensity of steel plate, design every truss structure
Spacing；
2) single truss is assembled and installation: after each component presses design size completion of processing, according to execution conditions on-site consolidation or complete
At being hoisted to in-site installation after assembly；Top boom, lower boom pass through high-strength bolt between web member and connect；
3) it the connection between multiple truss: is connected between every truss structure by several connecting rods on lower boom；
4) horizontal position of fixed truss height adjustment: is adjusted by oil support；
5) lumps of wood and bamboo slab rubber are fixed above top boom.
The connection of connecting rod and lower boom ensure that the verticality of truss.Several truss parallel arrangement, passes through connecting rod
Form a support construction.
Beneficial effects of the present invention:
The present invention is a kind of support construction of concrete structure arc bed die quick Fabrication installing and dismounting, can be according to building
Shape adjusts truss chain bar size, can satisfy various sizes of architecture construction demand, and structure is simple,
Whole stressed effect is good, convenient for disassembly and assembly, can reuse, reduce cost.
Compared with prior art, the invention has the characteristics that:
1. truss can realize the support to arc concrete structure by adjusting size；
2. each component can be with piecemeal simultaneous processing, then carries out assembly, processing efficiency is promoted；
3. truss assembly is high-efficient, at low cost, a large amount of to save manually and highly-safe；
4. truss chain bar high strength exploitation, can reuse installation, can be conveniently adjusted when needing to modify.
Detailed description of the invention
Steel truss support structure schematic diagram Fig. 1 of the invention；
The connection schematic diagram of Fig. 2 lower boom and web member；
The connection schematic diagram of Fig. 3 top boom and web member；
Fig. 4 web member (or connecting rod) schematic diagram；
Description of symbols in figure:
1-web member, 2-top booms, 3-lower booms, 4-connecting rods, 5-high-strength bolts, 6-oil supports, the 7-lumps of wood, 8-bamboo glue
Plate.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of large volume arc concrete steel lattice supporting framework,
The support construction that the steel truss support structure is made of more Pin truss disposed in parallel；
As shown in Figure 1, every truss structure includes web member 1, top boom 2, lower boom 3, connecting rod 4, high-strength bolt 5, oil support 6, the lumps of wood 7
With bamboo slab rubber 8；The top boom 2 is the bar steel plate of embowment, and the lower section of top boom 2, lower edge is arranged in the lower boom 3
The perpendicular steel of bar 3 including two sides and the horizontal steel connecting with the two sides bottom Shu Gang, are provided with more between the top boom 2 and lower boom 3
Root support angle is different, the web member 1 of length not etc., the both ends of every web member 1 pass through respectively high-strength bolt 5 and top boom 2 and under
Chord member 3 connects；The top of top boom 2 is provided with bamboo slab rubber 8 identical with 2 crooked radian of top boom, and the lower surface of bamboo slab rubber 8 is equal
The even setting muti-piece lumps of wood 7；The bottom of lower boom 3 connects oil support 6；It is connected on the vertical bar of 3 two sides of lower boom by high-strength bolt 5
The connecting rod 4 vertical with vertical bar is connected by connecting rod 4 between two adjacent truss structures.
Top boom 2 is using the thick, bar steel plate not less than 200mm wide not less than 2mm according to concrete structure sharp processing
It is made, the drilling of bar steel plate two sides is connect by high-strength bolt 5 with web member 1.
The lumps of wood 7 and bamboo slab rubber 8 are fixed with iron wire in 2 upper end of top boom.
For web member 1 by forming not less than No. 10 channel steels or I-steel both ends welding steel, the aperture of steel plate both ends is used for high-strength spiral shell
Bolt 5 passes through, and connect web member 1 with top boom 2 or lower boom 3, and steel plate thickness is not less than 10mm.
The perpendicular steel and horizontal steel of lower boom 3 are all made of not less than No. 10 channel steel back sides and are welded with steel plate composition；The perpendicular steel of lower boom 3
Or the horizontal equal throat thickness in steel both ends is not less than the steel plate connector of 10mm, is provided with through-hole, high-strength bolt 5 on steel plate connector
The vertical bar of lower boom 3 is connect with cross bar across the through-hole of steel plate connector；Two side opening of the channel steel of lower boom 3, for height
Strength bolt 5 passes through, so that lower boom 3 be made to connect with web member 1 or connecting rod 4.
3 lower end of lower boom is supported by oil support 6, while oil support 6 is caught in the channel steel of lower boom 3, is stretched by adjusting oil support 6
The height of length adjustment truss out.
Connecting rod 4 not less than No. 5 channel steels or I-steel both ends welding steel by forming, the aperture of steel plate both ends, for high-strength
Bolt 5 passes through, so that lower boom 3 be made to connect with connecting rod 4.
Channel steel back side welding steel forms lower boom such as Fig. 2, and channel steel both ends weld rectangular steel plates and form web member such as Fig. 4, abdomen
Between bar and lower boom, between web member and top boom, it is connected by high-strength bolts such as Fig. 1, steel plate, channel steel are needing bolt to connect
It is punched at the place of connecing.
In the present embodiment: each chain bar top boom of truss, lower boom, web member and connection boom end are all made of 2 high-strength bolts
Connection, diameter are not less than 1cm.
Top boom is thick not less than 2mm using steel plate thickness, and lower boom uses steel plate thickness thick not less than 10mm, chain bar both ends
Welding steel be not less than 10mm thickness, lower boom, web member use be not less than No. 10 channel steels, connecting rod use be not less than No. 5 slots
Steel.
The channel steel, steel plate carry out resistance to compression, tensile strength is checked.The welding of channel steel, I-steel and steel plate is all made of full
Weldering.
High-strength bolt in the present invention: the bolt of high-strength bolt connection uses 10.9S grades or 8.8S grades of high duty alloy structures
Steel is simultaneously made through Overheating Treatment, and high-strength bolt hole should use drilled as holes.
Embodiment 2
The present embodiment be large volume arc concrete steel lattice supporting framework described in embodiment 1 construction method, it is described substantially
Product arc concrete steel lattice supporting framework is supported by full hall frame and oil support, including following construction procedure:
1) according to top boom, lower boom and the web member of concrete structure shape and full hall frame production truss: mixed according to arc first
Xtah Crude Clay structure designs top boom bar steel plate size, and the channel steel and steel plate of lower boom are determined according to scene full hall frame support situation
Then size designs truss web size, finally calculate the Stress Check channel steel of truss, the intensity of steel plate, design every truss structure
Spacing；
2) single truss is assembled and installation: after each component presses design size completion of processing, according to execution conditions on-site consolidation or complete
At being hoisted to in-site installation after assembly；Top boom, lower boom pass through high-strength bolt between web member and connect；
3) it the connection between multiple truss: is connected between every truss structure by several connecting rods on lower boom；
4) horizontal position of fixed truss height adjustment: is adjusted by oil support；
5) lumps of wood and bamboo slab rubber are fixed above top boom.
After the completion of setting up, absolute altitude, verticality and position are appraised and decided.It is carried out in a reverse order when tearing film open, it is high to reduce oil support
Degree, first tears the lumps of wood and plank sheathing open, then tear top boom, web member, lower boom, connecting rod open.Chain bar carries out recycling and is used in turn.
Claims (8)
1. a kind of large volume arc concrete steel lattice supporting framework, it is characterised in that:
The support construction that the steel truss support structure is made of more Pin truss disposed in parallel；
Every truss structure includes web member (1), top boom (2), lower boom (3), connecting rod (4), high-strength bolt (5), oil support (6), side
Wooden (7) and bamboo slab rubber (8)；
The top boom (2) is the bar steel plate of embowment, and the lower boom (3) is arranged in the lower section of top boom (2), lower edge
Bar (3) includes the perpendicular steel of two sides and the horizontal steel that connect with the two sides bottom Shu Gang, is set between the top boom (2) and lower boom (3)
Be equipped with the web member (1) of more support angle differences, length not etc., the both ends of every web member (1) pass through respectively high-strength bolt (5) with
Top boom (2) and lower boom (3) connection；
The top of top boom (2) is provided with bamboo slab rubber (8) identical with top boom (2) crooked radian, the lower surface of bamboo slab rubber (8)
It is uniformly arranged the muti-piece lumps of wood (7)；
The bottom of lower boom (3) connects oil support (6)；
It is connected with the connecting rod vertical with vertical bar (4) on the vertical bar of lower boom (3) two sides by high-strength bolt (5), adjacent two
It is connected between truss structure by connecting rod (4).
2. a kind of large volume arc concrete steel lattice supporting framework according to claim 1, which is characterized in that described to wind up
Bar (2) is made using the thick, bar steel plate not less than 200mm wide not less than 2mm according to concrete structure sharp processing, item
The drilling of shape steel plate two sides, is connect by high-strength bolt (5) with web member (1).
3. a kind of large volume arc concrete steel lattice supporting framework according to claim 1, which is characterized in that top boom
(2) lumps of wood (7) and bamboo slab rubber (8) are fixed with iron wire in upper end.
4. a kind of large volume arc concrete steel lattice supporting framework according to claim 1, which is characterized in that the web member
(1) by forming not less than No. 10 channel steels or I-steel both ends welding steel, the aperture of steel plate both ends is passed through for high-strength bolt (5),
It connect web member (1) with top boom (2) or lower boom (3), steel plate thickness is not less than 10mm.
5. a kind of large volume arc concrete steel lattice supporting framework according to claim 1, which is characterized in that the lower edge
The perpendicular steel and horizontal steel of bar (3) are all made of not less than No. 10 channel steel back sides and are welded with steel plate composition；The perpendicular steel or horizontal steel two of lower boom (3)
It holds equal throat thickness to be not less than the steel plate connector of 10mm, through-hole is provided on steel plate connector, high-strength bolt (5) passes through steel
The through-hole of plate connector connect the vertical bar of lower boom (3) with cross bar；Two side opening of the channel steel of lower boom (3), for high-strength
Bolt (5) passes through, so that lower boom (3) be made to connect with web member (1) or connecting rod (4).
6. a kind of large volume arc concrete steel lattice supporting framework according to claim 5, which is characterized in that lower boom
(3) lower end is supported by oil support (6), while oil support (6) is caught in the channel steel of lower boom (3), is stretched out and is grown by adjusting oil support (6)
The height of degree adjustment truss.
7. a kind of large volume arc concrete steel lattice supporting framework according to claim 1, which is characterized in that the connection
Bar (4) by forming not less than No. 5 channel steels or I-steel both ends welding steel, wear for high-strength bolt (5) by the aperture of steel plate both ends
It crosses, so that lower boom (3) be made to connect with connecting rod (4).
8. the construction method of large volume arc concrete steel lattice supporting framework described in claim 1, which is characterized in that described
Large volume arc concrete steel lattice supporting framework is supported by full hall frame and oil support, including following construction procedure:
1) according to top boom, lower boom and the web member of concrete structure shape and full hall frame production truss: mixed according to arc first
Xtah Crude Clay structure designs top boom bar steel plate size, and the channel steel and steel plate of lower boom are determined according to scene full hall frame support situation
Then size designs truss web size, finally calculate the Stress Check channel steel of truss, the intensity of steel plate, design every truss structure
Spacing；
2) single truss is assembled and installation: after each component presses design size completion of processing, according to execution conditions on-site consolidation or complete
At being hoisted to in-site installation after assembly；Top boom, lower boom pass through high-strength bolt between web member and connect；
3) it the connection between multiple truss: is connected between every truss structure by several connecting rods on lower boom；
4) horizontal position of fixed truss height adjustment: is adjusted by oil support；
5) lumps of wood and bamboo slab rubber are fixed above top boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077429.3A CN109653536A (en) | 2019-01-28 | 2019-01-28 | A kind of large volume arc concrete steel lattice supporting framework and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077429.3A CN109653536A (en) | 2019-01-28 | 2019-01-28 | A kind of large volume arc concrete steel lattice supporting framework and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109653536A true CN109653536A (en) | 2019-04-19 |
Family
ID=66121693
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910077429.3A Pending CN109653536A (en) | 2019-01-28 | 2019-01-28 | A kind of large volume arc concrete steel lattice supporting framework and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445733A (en) * | 2021-08-30 | 2021-09-28 | 河北建设集团股份有限公司天津分公司 | Test bed template supporting device for wind power blade detection and mounting method |
| CN113802843A (en) * | 2020-06-17 | 2021-12-17 | 振中建设集团有限公司 | High-precision construction method for elevator shaft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021545Y (en) * | 2006-10-18 | 2008-02-13 | 孙志强 | Adjusting tray of quick removable mould of casting top slab for building |
| CN201206330Y (en) * | 2008-04-30 | 2009-03-11 | 中建三局建设工程股份有限公司 | Support system for arc lintel template |
| CN206829603U (en) * | 2017-06-14 | 2018-01-02 | 中国五冶集团有限公司 | A kind of device for quick and precisely installing flue arch top template |
| CN206928642U (en) * | 2017-06-15 | 2018-01-26 | 中建五局土木工程有限公司 | A kind of safety and environmental protection movable formwork support |
| CN209686924U (en) * | 2019-01-28 | 2019-11-26 | 中国人民解放军63926部队 | A kind of large volume arc concrete steel lattice supporting framework |
-
2019
- 2019-01-28 CN CN201910077429.3A patent/CN109653536A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021545Y (en) * | 2006-10-18 | 2008-02-13 | 孙志强 | Adjusting tray of quick removable mould of casting top slab for building |
| CN201206330Y (en) * | 2008-04-30 | 2009-03-11 | 中建三局建设工程股份有限公司 | Support system for arc lintel template |
| CN206829603U (en) * | 2017-06-14 | 2018-01-02 | 中国五冶集团有限公司 | A kind of device for quick and precisely installing flue arch top template |
| CN206928642U (en) * | 2017-06-15 | 2018-01-26 | 中建五局土木工程有限公司 | A kind of safety and environmental protection movable formwork support |
| CN209686924U (en) * | 2019-01-28 | 2019-11-26 | 中国人民解放军63926部队 | A kind of large volume arc concrete steel lattice supporting framework |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802843A (en) * | 2020-06-17 | 2021-12-17 | 振中建设集团有限公司 | High-precision construction method for elevator shaft |
| CN113445733A (en) * | 2021-08-30 | 2021-09-28 | 河北建设集团股份有限公司天津分公司 | Test bed template supporting device for wind power blade detection and mounting method |
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