CN106930527A - The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel - Google Patents
The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel Download PDFInfo
- Publication number
- CN106930527A CN106930527A CN201710132932.5A CN201710132932A CN106930527A CN 106930527 A CN106930527 A CN 106930527A CN 201710132932 A CN201710132932 A CN 201710132932A CN 106930527 A CN106930527 A CN 106930527A
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- China
- Prior art keywords
- steel
- construction technology
- encorbelmenting
- prestressed girder
- pole
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Classifications
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- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/40—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for coffered or ribbed ceilings
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
-
- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
Abstract
The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel of the present invention, by ABAQUS finite element softwares, simulated by Numerical Simulation, medial branch bar, the position of the fixation of outside pole and connecting rod and the strong point, die, layouting for suspension cable are optimized, building slab column structural elements is made full use of as the fixing end and the strong point of formwork prestressed girder of encorbelmenting, installation is encorbelmented I-steel, and the workbench of the formwork bracing system of high-altitude heavy in section concrete cantilevered structure is formed with methods such as channel-section steel diagonal brace, steel wire rope unloadings.
Description
Technical field
The present invention relates to prestressed girder construction technology, in particular to a kind of compound formwork of encorbelmenting of three-dimensional artificial shaped steel
High-altitude long-span prestressed girder construction technology, belongs to technical field of building construction.
Background technology
The large span Zhongting of public building and high-rise residential building, reaches more than ten multilayers sometimes, with reach it is spacious,
Penetrating, broad view architectural effect；In two or several rows of high levels, the Tower Building Design requirement of high-rise building is in midair
In an entirety is unified into by reinforced concrete structure again, using cavity effect realize environment penetrating and vision change
Change, with the light and shade of facade and the actual situation in space, the majestic appearance graceful bearing of prominent building.Such structure is often employed in the design
Heavy in section Large Span Prestressed Beam, the construction characteristic of the prestressed girder of encorbelmenting is：Span is big, height is high, construction loads is big, construction
Difficulty is high.
The application prior authorization patent " large span suspension eaves shutterings-supported construction method " (Patent No.：ZL 2011 1
Although 01650007.5) had certain effect for cornice template, template is being encorbelmented just more than 3000mm in face of span
Have that structure is not firm enough, construction risk defect high.
How a kind of three-dimensional artificial shaped steel compound encorbelment formwork high-altitude long-span prestressed girder construction technology, Neng Gou are studied
Construction cost is reduced while improving operating efficiency, it is ensured that construction quality and construction safety, the problem as research.
The content of the invention
The technical problem to be solved in the present invention is to overcome existing defect, there is provided one kind ensures that construction quality and construction are pacified
The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of full three-dimensional artificial shaped steel.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
The present invention relates to the compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel, its feature exists
In described formwork prestressed girder of encorbelmenting positioned at n+3 layers, two ends are connected with the beam of vertical direction, and its underpart is supported with vertical rod, stand
The bottom of bar is located on n+1 layers of I-steel, and the beam of the one end with n+1 layers of I-steel is removably fixed, and the other end is encorbelmented
In outside floor, I-steel to be encorbelmented and be welded with inner side pole and outside pole, the other end and the n-layer building of inner side pole below part
Built-in fitting on plate is fixed, and outside pole is fixed with the outer beams of n-layer, and inner side pole and outside pole are connected by connecting rod,
Suspension cable one end is fixed in n+2 layers of outer beams, and the other end of suspension cable is connected with the part of encorbelmenting of I-steel, and n is more than 1
Integer；
Described construction technology includes being simulated by Numerical Simulation by ABAQUS finite element softwares, to medial branch
Bar, the position of the fixation of outside pole and connecting rod and the strong point, die, layouting for suspension cable optimize；And in concrete
In casting process, constantly deformation observation is carried out to I-steel.
In a preferred embodiment of the present invention, steam vent, part are appropriately arranged with prestressed girder two ends and span centre
Grout hole is also served as, grout hole is used for cement grouting in pipeline, and aperture is not less than 16mm.
In a preferred embodiment of the present invention, described n is the integer more than or equal to 10.
In a preferred embodiment of the present invention, described vertical rod is fixed by cross bar.
In a preferred embodiment of the present invention, described I-steel encorbelment part length in more than 3000mm.
In a preferred embodiment of the present invention, the inner side pole, outside pole and connecting rod are I-steel, groove
Steel or angle bar.
In a preferred embodiment of the present invention, inner side pole, the fixation of outside pole and connecting rod and the strong point
Position, die, layouting for suspension cable meet the optimum results of ABAQUS finite element softwares.
The present invention is simulated, by building beam, plate, post by ABAQUS finite element emulation softwares by Numerical Simulation
Carry and Deformation control is in allowed band, stability and deformation according to support system, to position, the type of the fixed and strong point
The reasonable selection of steel and steel tube member bar, suspension cable layout and pulling force control etc. optimizes analysis, and set up and mix in template
Solidifying soil pours middle according to deformation detection result, and dynamic adjustment template is set up and supported, and makes full use of building beam slab rod structure structure
Part installs I-steel of encorbelmenting as the fixing end and the strong point of formwork of encorbelmenting, and is formed with methods such as channel-section steel diagonal brace, steel wire rope unloadings
The workbench of the formwork bracing system of high-altitude heavy in section concrete cantilevered structure.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with reality of the invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the compound formwork prestressed girder schematic diagram of encorbelmenting of three-dimensional artificial shaped steel of the present invention, wherein 1 be n-layer floor and its
Outer beams, 2 is n+1 floors plate and its outer beams, and 3 is n+2 floor plates, and 4 is the built-in fitting on n-layer floor；5 is inner side pole, 6
It is outside pole, 7 is connecting rod, and 8 is I-steel, and 9 is suspension cable, and 10 is n+2 layers of outer beams, and 11 is vertical rod, and 12 is to encorbelment
Formwork prestressed girder, 13 is n+3 floor plates.
Specific embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferred reality described herein
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
As shown in figure 1, three-dimensional artificial shaped steel of the invention is combined formwork prestressed girder of encorbelmenting, described formwork of encorbelmenting in advance should
Power beam 12 is located at n+3 layers, and two ends are connected (not shown) with the beam of vertical direction, and its underpart vertical rod 11 is supported, vertical rod 11
Bottom be located on n+1 layers of I-steel 8, one end of I-steel is removably fixed with the beam of n+1, and the other end is encorbelmented in building
Outside plate, I-steel encorbelmented inner side pole 5 and the outside pole 6 be welded with below part, the other end and the n-layer building of inner side pole 5
Built-in fitting on plate is fixed, and outside pole 6 is fixed with the outer beams of n-layer, and inner side pole 5 and outside pole 6 are connected by connecting rod 7
Connect, the one end of suspension cable 9 is fixed in n+2 layers of outer beams, the other end of suspension cable 9 is connected with the part of encorbelmenting of I-steel, and n is
Integer more than 1.
Described construction technology includes, by ABAQUS finite element softwares, being simulated by Numerical Simulation, to medial branch
Bar, the position of the fixation of outside pole and connecting rod and the strong point, die, layouting for suspension cable optimize；And in concrete
In casting process, constantly deformation observation is carried out to I-steel.
In a preferred embodiment of the present invention, steam vent, part are appropriately arranged with prestressed girder two ends and span centre
Grout hole is also served as, grout hole is used for cement grouting in pipeline, and aperture is not less than 16mm.
In concreting process, constantly deformation observation is carried out to I-steel, described observation comprises the following steps：
1st, observation station is arranged
After the completion for the treatment of that cantilever supporting frame is set up, seen across a deformation observation point is set every 5 on outer Side Template rack rod
Measuring point red paint does floor building (structure) 1.000m wire tags, while in the floor on the concrete component of non-cantilevered structure
Also floor building (structure) the 1.000m wire tags no less than 3 are carried out, position must be easy to spirit level to observe to be prevented by thing
Body blocks sight line, and carries out numbering.
2nd, initial observation
After the completion of each observation station arrangement, each observation station absolute altitude original records are carried out.
3rd, deformation observation
For the ease of deformation observation, cantilever part concrete should be arranged in and pour daytime, and each observation station is poured in concrete
Once, moderate finite deformation position occur increases observing frequency, this frequency observation according to actual conditions for observation in every 15 minutes during building
It is always maintained to cantilever part concreting finishing.
Cantilever part concreting is finished, and does not find moderate finite deformation, then continue every 30 minutes to each observation station observation one
Secondary, until concrete reaches final set, no abnormal situation can stop observation.
4th, deformation observation early warning value
Calculated according to support body amount of deflection, comprehensive on-site actual situations, such as find that observation point deformation reaches 6mm, observation person should stand
I.e. telephone report project management department, observes point deformation and reaches 10mm, should immediately stop concreting, checks support body general status, frame
Each stress point situation of body (key point such as weld seam, anchoring ring).
Described vertical rod 11 can also be fixed by cross bar.Described I-steel encorbelments part in more than 3000mm.
The inner side pole 5, outside pole 6 and connecting rod 7 are I-steel, channel-section steel or angle bar.
By ABAQUS finite element softwares, simulated by Numerical Simulation, to medial branch bar 5, outside pole 6 and connection
The fixation of bar 7 and the position of the strong point, die, layouting for suspension cable optimize, and make full use of building beam slab rod structure structure
Part is encorbelmented support system fixing end and the strong point as I-steel.
The above is the preferred embodiments of the present invention, it is noted that come for those skilled in the art
Say, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.For the technical staff of general domain, on the premise of without departing substantially from true spirit
Any obvious change done to it, will all be constituted to infringement of patent right of the present invention, will undertake corresponding law duty
Appoint.
Claims (5)
1. three-dimensional artificial shaped steel is combined formwork high-altitude long-span prestressed girder construction technology of encorbelmenting, it is characterised in that described encorbelments
Formwork prestressed girder is located at n+3 layers, and two ends are connected with the beam of vertical direction, and its underpart is supported with vertical rod, and the bottom of vertical rod is located at n
On+1 layer of I-steel, the beam of the one end with n+1 layers of I-steel is removably fixed, and the other end is encorbelmented in outside floor, I-shaped
Steel encorbelmented inner side pole and the outside pole be welded with below part, the built-in fitting on the other end of inner side pole and n-layer floor
Fixed, outside pole is fixed with the outer beams of n-layer, and inner side pole and outside pole are connected by connecting rod, and suspension cable one end is consolidated
It is scheduled in n+2 layers of outer beams, the other end of suspension cable is connected with the part of encorbelmenting of I-steel, and n is the integer more than 1, preferably
It is the integer more than or equal to 7；Described construction technology is included by ABAQUS finite element softwares, by Numerical Simulation mould
Intend, medial branch bar, the position of the fixation of outside pole and connecting rod and the strong point, die, layouting for suspension cable are optimized；
And in concreting process, constantly deformation observation is carried out to I-steel.
2. construction technology according to claim 1, steam vent is appropriately arranged with prestressed girder two ends and span centre, is partly also served as
Grout hole, grout hole is used for cement grouting in pipeline, and aperture is not less than 16mm.Described n is the integer more than or equal to 10.
3. construction technology according to claim 1, described vertical rod is fixed by cross bar.
4. construction technology according to claim 1, described I-steel encorbelment part length in more than 3000mm.
5. construction technology according to claim 1, the inner side pole, outside pole and connecting rod are I-steel, channel-section steel
Or angle bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132932.5A CN106930527A (en) | 2017-03-07 | 2017-03-07 | The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132932.5A CN106930527A (en) | 2017-03-07 | 2017-03-07 | The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel |
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| Publication Number | Publication Date |
|---|---|
| CN106930527A true CN106930527A (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710132932.5A Pending CN106930527A (en) | 2017-03-07 | 2017-03-07 | The compound formwork high-altitude long-span prestressed girder construction technology of encorbelmenting of three-dimensional artificial shaped steel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051081A (en) * | 2020-09-08 | 2020-12-08 | 安徽工业大学 | Large-cantilever safe intelligent construction system and method for directly guiding construction by experimental data |
| CN112065043A (en) * | 2020-09-08 | 2020-12-11 | 安徽工业大学 | Large cantilever safe intelligent construction system and method for finite element synchronous analysis |
| CN113152871A (en) * | 2021-04-18 | 2021-07-23 | 广西建工第一建筑工程集团有限公司 | Tool type temporary cantilever steel beam foundation system device and mounting and dismounting use method |
Citations (5)
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|---|---|---|---|---|
| JPH08218650A (en) * | 1995-02-20 | 1996-08-27 | Daisue Kensetsu Kk | Timbering |
| RU46027U1 (en) * | 2004-11-26 | 2005-06-10 | Романов Геннадий Григорьевич | CONSOLE-CROSSING FORESTS |
| CN203701549U (en) * | 2014-02-28 | 2014-07-09 | 中天建设集团有限公司 | High-altitude large-span cantilever formwork |
| CN105926916A (en) * | 2016-05-24 | 2016-09-07 | 杭州江润科技有限公司 | Cable-stayed suspended combined supporting system and construction method based on intelligent monitoring |
| CN106150088A (en) * | 2016-08-11 | 2016-11-23 | 上海嘉实（集团）有限公司 | Large cantilever beam slab combined type formwork system and construction method |
-
2017
- 2017-03-07 CN CN201710132932.5A patent/CN106930527A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218650A (en) * | 1995-02-20 | 1996-08-27 | Daisue Kensetsu Kk | Timbering |
| RU46027U1 (en) * | 2004-11-26 | 2005-06-10 | Романов Геннадий Григорьевич | CONSOLE-CROSSING FORESTS |
| CN203701549U (en) * | 2014-02-28 | 2014-07-09 | 中天建设集团有限公司 | High-altitude large-span cantilever formwork |
| CN105926916A (en) * | 2016-05-24 | 2016-09-07 | 杭州江润科技有限公司 | Cable-stayed suspended combined supporting system and construction method based on intelligent monitoring |
| CN106150088A (en) * | 2016-08-11 | 2016-11-23 | 上海嘉实（集团）有限公司 | Large cantilever beam slab combined type formwork system and construction method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051081A (en) * | 2020-09-08 | 2020-12-08 | 安徽工业大学 | Large-cantilever safe intelligent construction system and method for directly guiding construction by experimental data |
| CN112065043A (en) * | 2020-09-08 | 2020-12-11 | 安徽工业大学 | Large cantilever safe intelligent construction system and method for finite element synchronous analysis |
| CN113152871A (en) * | 2021-04-18 | 2021-07-23 | 广西建工第一建筑工程集团有限公司 | Tool type temporary cantilever steel beam foundation system device and mounting and dismounting use method |
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