CN108560426A - Prevent floating construction method in combined box beam internal model - Google Patents
Prevent floating construction method in combined box beam internal model Download PDFInfo
- Publication number
- CN108560426A CN108560426A CN201810489814.4A CN201810489814A CN108560426A CN 108560426 A CN108560426 A CN 108560426A CN 201810489814 A CN201810489814 A CN 201810489814A CN 108560426 A CN108560426 A CN 108560426A
- Authority
- CN
- China
- Prior art keywords
- internal model
- external mold
- box beam
- web
- concrete
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses one kind preventing floating construction method in combined box beam internal model, is related to precast concrete field, solves the problems, such as that the screw rod for preventing internal model from floating causes damage in withdrawal process to concrete；Its key points of the technical solution are that including the following steps：（1）Precast pedestal；（2）Bottom die of box-beam is installed on pedestal；（3）Bottom, web reinforcement and fixed web corrugation pipe are bound on moulding bed；（4）Polishing template；（5）Smearing release agent；（6）External mold is installed；（7）Integral hoisting bottom, web reinforcement；（8）End head formwork is installed；（9）Internal model is installed；（10）Roof steel bar and fixed hogging moment bellows are bound on moulding bed；（11）Roof steel bar integral hoisting；（12）External mold fixed frame in installation；（13）Connecting steel wire ropes and strainer；（14）Pour concrete；（15）Form removal；（16）Health prevents from causing to damage to concrete without passing through roof steel bar that can prevent internal model from floating screw rod.
Description
Technical field
The present invention relates to precast concrete fields, prevent combined box beam internal model floating from applying more specifically, it is related to one kind
Work method.
Background technology
Combined box beam is a kind of bridge structure form more commonly used in bridge construction process, in numerous bridge constructions
In be widely used.
The prior art is very easy in the process poured into a mould combined box beam there is a situation where internal model floating, interior
Mould, which floats, can cause the top plate thickness of combined box beam insufficient so that concrete is insufficient to the protection of reinforcing bar so that prefabricated case beam holds
Easily there is accident, in order to solve the problems, such as that prefabricated box girder inner formwork floats, is added at the top of roof steel bar in the prior art multigroup
Then the shoulder pole girder being connected with external mold downwards pushes up internal model using shoulder pole girder as the down-set adjustable screw rod of support
Tightly.
Although existing this method can effectively reduce the floating of internal model, because screw rod is in roof steel bar
It passes through, is pouring concrete and again extracting screw rod in concrete after concrete tentatively solidification, leading to combination box
Back plate has several apertures and concrete does not solidify thoroughly in the process for extracting reinforcing bar, is easy to work as in the process of extraction
In concrete is caused to damage, to lower the intensity of combined box beam top plate.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide one kind to prevent combined box beam internal model floating from applying
Work method can either prevent internal model from floating, and not pass through concrete combined box beam, thus will not be at the top of combined box beam
It leaves aperture concrete will not be caused to damage, to reduce the intensity of concrete combined box beam top plate.
To achieve the above object, the present invention provides following technical solutions：One kind preventing the floating construction of combined box beam internal model
Method includes the following steps：
（1）Precast pedestal：The preparation of precast pedestal is carried out using concrete, the requirement of caisson platform precasting has enough for the lower layer of pedestal
Rigidity, and pedestal needs be placed on the ground with excellent support effect, the pedestal in entire work progress
Sinking can not be more than 2mm；
（2）Bottom die of box-beam is installed on pedestal：Bed die is processed by steel plate, is directly installed on precast pedestal, the two of bed die
End is welded with the fixed ring for steel wire rope to be fixed；
（3）Bottom, web reinforcement and fixed web corrugation pipe are bound on moulding bed：Blanking and curved is carried out to reinforcing bar according to drawing first
Song, then bottom, web reinforcement binding are carried out on moulding bed, it is typically improved using weldering combination is tied up in the process that reinforcing bar is bound
Bottom, web reinforcement entirety soundness；If the position of the position of web corrugation pipe and reinforcing bar in the process of practical operation
It clashes, adjusts the position of skeleton reinforcing steel bar, ensure that the position of web corrugation pipe coincide with design position；To web corrugation pipe
It is attached and is the need to ensure that bellows seam crossing is tight, web corrugation pipe junction is more than web corrugation pipe 5mm using diameter
Casing be sleeved on seam crossing and be attached；
（4）Polishing template：Mainly by the template surface of external mold rusty stain and last casting complete after remained on surface
Mucilage remove it is clean；
（5）Smearing release agent：In uniform smearing release agent on clean outer mould surface of polishing, coagulation after terminating convenient for cast
Native box beam is detached from external mold；
（6）External mold is installed：External mold is made of side form, outer mould bases, external mold diagonal brace etc., will be on bed die in the process of installation external mold
Fixed ring it is exposed, be convenient for construction in later period；
（7）Integral hoisting bottom, web reinforcement：It is lifted into bottom, web reinforcement are whole on bed die, prevents in the mistake lifted
Cheng Dangzhong reinforcing bars deform；
（8）End head formwork is installed：It needs the surface cleaning by end head formwork clean before installation end head formwork, ensures end head formwork
Surfacing is bright and clean, no concave-convex deforms and remaining mucilage；The designated position of mould lifting will be held after cleaning out using suspender,
Then bolt is utilized to connect end mould with side form with bed die and end mould；By the gap and end between end head formwork and interior external mold
Gap between head reinforcing bar and end mould is blocked using foam gap filler；
（9）Internal model is installed：Two length directions branch identical with internal model length direction is fixed in inner cavity top both sides among internal model
Strut, and the inner cavity of internal model is stretched out at the both ends of supporting rod；It needs to clear up the template of internal model before internal model installation, clearly
Except the remaining mucilage and rusty stain of inner mould surface, uniform smearing release agent after cleaning out；
（10）Roof steel bar and fixed hogging moment bellows are bound on moulding bed：Blanking and curved is carried out to reinforcing bar according to drawing requirement
Song is typically all to be combined using tying up weldering in the process that roof steel bar is bound on moulding bed, improves the soundness of roof steel bar；
If the position of hogging moment bellows and the position of reinforcing bar clash in the process of practical operation, the position of skeleton reinforcing steel bar is adjusted
It sets, ensures that the position of hogging moment bellows coincide with design position；It needs to ensure when being attached hogging moment bellows negative
Moment of flexure bellows seam crossing is tight, and casing of the hogging moment bellows junction using diameter more than hogging moment bellows 5mm is sleeved on
Seam crossing is attached；
（11）Roof steel bar integral hoisting：By being lifted into above internal model for the roof steel bar bound entirety, what is lifted
Prevent bar bending from deforming in process；
（12）External mold fixed frame in installation：The installation of external mold fixed frame in external mold both ends carry out, interior external mold fixed frame is by internal model
On the end of supporting rod and the end of external mold link together, using being connected by the way of threaded connection in the process of connection
It connects；In order to improve the stability of interior external mold connection, interior external mold fixed frame is attached by more bolts with external mold；
（13）Connecting steel wire ropes and strainer：Two steel wire ropes, two steel are connected on connection boom end and fixed ring respectively
Cord is connected by strainer, and strainer tenses two steel wire ropes so that steel wire rope is in tensioned state；
（14）Pour concrete：To concrete is poured into a mould between internal model and external mold, constantly vibrate to concrete in casting process,
So that concreting uniformly and by the bubble that concreting process generates vibrates；
（15）Form removal：The concrete strength poured can reach its surface when do not collapse with crack, to internal model and
Side form is removed, and steel wire rope, strainer and interior external mold fixed frame are first removed in the process of dismounting, then removes internal model,
External mold is finally removed, is all first demounting bolt in the process of dismounting, it is then careful to dismantle internal model and each section of external mold
Under；
（16）Health：Water pipe is all set in two coxostermums, top plate and the inside of box beam, nozzle is set on water pipe, utilizes water pump
Pressurization sprays box beam；It needs to ensure that each part of beam body can keep moistening, the time of health is generally many
Yu Qitian；Health carries out prestressed stretch-draw to box beam again after terminating.
By using above-mentioned technical proposal, can be incited somebody to action by interior external mold fixed frame and the supporting rod being fixed in internal model
Internal model is fixed together with external mold, prevents internal model from floating during pouring into a mould concrete；And it will be consolidated by steel wire rope
Determine ring to link together with supporting rod, by strainer by steel wire tensioning, further prevents internal model in the process of cast
There is On The Floating；It does not have screw rod while preventing internal model from floating or other components is inserted into box beam concrete,
It prevents that concrete is caused to damage.
The present invention is further arranged to：The step（3）In on moulding bed carry out bottom, web reinforcement binding before need
Rebar surface is cleaned, removes oil stain, paint dirt, outer skin and iron rust of rebar surface etc., the process for carrying out iron rust removing is worked as
In wire brush may be used be purged.
By using above-mentioned technical proposal, before carrying out steel reinforcement cage binding to the oil stain of rebar surface, paint is dirty, outer skin with
And iron rust is removed totally, and the corrosion rate after reinforcing bar is poured into concrete can be slowed down.
The present invention is further arranged to：The step（3）When carrying out blanking and bending to reinforcing bar, in the process of reinforcing bar bending
It is bent in the middle using numerical-control bending machine, ensures the precision of bending angle.
By using above-mentioned technical proposal, it is to be not easy to control the angle of bending manually to carry out bending to reinforcing bar,
The precision of bar bending angle can be improved by carrying out bending using numerical-control bending machine, to improve the quality of steel reinforcement cage binding.
The present invention is further arranged to：The step（3）In by welding semicircle in the design path of web corrugation pipe
The locating framework of shape positions web corrugation pipe.
It, can be preferably to web corrugation by way of welding semicircle locating framework by using above-mentioned technical proposal
Pipe is positioned, and the installation accuracy of web corrugation pipe is improved, to improve the casting quality of combined box beam.
The present invention is further arranged to：The step（14）In poured before check blending station, supply line, gantry
Whether the running gear and lifting component use state hung be intact.
By using above-mentioned technical proposal, before being poured into a mould to blending station, supply line, gantry crane running gear
And lifting component memory inspection, timely failure can be excluded, prevent equipment failure when work from influencing combination
The quality and efficiency of box beam cast.
The present invention is further arranged to：The step（14）In be inserted into internal diameter in the bellows duct and be less than in bellows
The plastic conduit of diameter 5mm, the continuous slide plastic pipe in the process poured.
By using above-mentioned technical proposal, concrete is easy to enter by the seam crossing of bellows in the process of cast
In bellows, plastic conduit is inserted into bellows and constantly push-and-pull can prevent from entering in the process of cast
Concrete in bellows is by ripple blockage.
The present invention is further arranged to：The step（14）Using antifouling limiting slot to pouring in the process poured
It builds and is limited.
By using above-mentioned technical proposal, the concrete in casting process is limited by using antifouling limiting slot
It can prevent from falling in roof steel bar when concrete is fallen at the top of not being poured into the process of cast, roof steel bar is made
At pollution.
The present invention is further arranged to：The step（16）In conserved during top plate need to be covered with geotextiles
Lid.
By using above-mentioned technical proposal, the top plate of combined box beam is because can be by the direct projection of the sun, the water ratio on spray
It is easier to evaporation to do, can slow down the speed that combined box beam top plate goes out moisture evaporation by being laid with geotextiles, improve combined box beam
Health effect at top plate.
In conclusion the present invention has the advantages that compared with the prior art：
1, the present invention can either prevent internal model by external mold link, connecting rod, fixed ring, steel wire rope and strainer in setting
It floats, and concrete will not be caused because of the components such as screw rod are inserted into the concrete of box beam in the process for pouring concrete
Damage；
2, the present invention cleans out the oil stain of rebar surface, paint dirt, outer skin and iron rust etc. before carrying out steel reinforcement cage binding, energy
Enough slow down the speed of steel bar corrosion after reinforcing bar is poured into concrete.
3, the present invention can preferably position web corrugation pipe by way of welding semicircle locating framework, carry
High web corrugation pipe installation accuracy, to improve the casting quality of combined box beam.
Specific implementation mode
Embodiment：One kind prevents floating construction method in combined box beam internal model, specific method and step as follows：
（1）Precast pedestal：The preparation of precast pedestal is carried out using concrete, the requirement of caisson platform precasting has enough for the lower layer of pedestal
Rigidity, and pedestal needs be placed on the ground with excellent support effect, the pedestal in entire work progress
Sinking can not be more than 2mm；
（2）Bottom die of box-beam is installed on pedestal：Bed die is processed by steel plate, is directly installed on precast pedestal, the two of bed die
End is welded with the fixed ring for steel wire rope to be fixed；
（3）Bottom, web reinforcement and fixed web corrugation pipe are bound on moulding bed：Needed to bar list before the binding of reinforcing bar
Face is cleaned, and is removed oil stain, paint dirt, outer skin and iron rust of rebar surface etc., can be adopted in the process of iron rust removing
It is purged with wire brush；When carrying out blanking and bending to reinforcing bar, the cutting length needs of reinforcing bar are carried out according to layout design
Accurate discharge, and be bent using numerical-control bending machine in the process of reinforcing bar bending, ensure the precision of bending angle；
It is typically all to use tie up, weld combination in the process that reinforcing bar is bound on moulding bed, improves bottom, the entirety of web reinforcement consolidates journey
Degree；It can be by welding semicircular locating framework in the design path of bellows to web corrugation pipe on bottom, web reinforcement
It is positioned；If the position of web corrugation pipe and the position of reinforcing bar clash in the process of practical operation, skeleton is adjusted
The position of reinforcing bar ensures that the position of web corrugation pipe coincide with design position；It is to need to protect being attached to web corrugation pipe
Card bellows seam crossing is tight, and casing of the web corrugation pipe junction using diameter more than web corrugation pipe 5mm is sleeved on seam crossing
It is attached；
（4）Polishing template：Mainly the mucilage of the rusty stain on surface and remained on surface after last casting complete is removed
Totally；
（5）Smearing release agent：In uniform smearing release agent on clean outer mould surface of polishing, coagulation after terminating convenient for cast
Native box beam is detached from external mold；
（6）External mold is installed：External mold is made of side form, outer mould bases, external mold diagonal brace etc., will be on bed die in the process of installation external mold
Fixed ring it is exposed, be convenient for construction in later period；
（7）Integral hoisting bottom, web reinforcement：Bottom, web reinforcement are lifted into using the suspenders such as truss are whole on bed die, utilized
Truss, which carries out lifting, can prevent from occurring in the process lifted the deformation of reinforcing bar；
（8）End head formwork is installed：It needs the surface cleaning by end head formwork clean before installation end head formwork, ensures end head formwork
Surfacing is bright and clean, no concave-convex deforms and remaining mucilage；The designated position of mould lifting will be held after cleaning out using suspender,
Then bolt is utilized to connect end mould with side form with bed die and end mould；By the gap and end between end head formwork and interior external mold
Gap between head reinforcing bar and end mould is blocked using foam gap filler；
（9）Internal model is installed：Two length directions branch identical with internal model length direction is fixed in inner cavity top both sides among internal model
Strut, and the inner cavity of internal model is stretched out at the both ends of supporting rod；It needs to clear up the template of internal model before internal model installation, clearly
Except the remaining mucilage and rusty stain of inner mould surface, uniform smearing release agent after cleaning out；
（10）Roof steel bar and fixed hogging moment bellows are bound on moulding bed：Needed to reinforcing bar before the binding of roof steel bar
Surface is cleaned, and oil stain, the paint for removing rebar surface be dirty, outer skin and iron rust etc., and carrying out in the process of iron rust removing can be with
It is purged using people's wire brush；When carrying out blanking and bending to reinforcing bar, the cutting length of reinforcing bar need according to layout design come
Accurate discharge is carried out, and is bent using numerical-control bending machine in the process of reinforcing bar bending, ensures the essence of bending angle
Accuracy；It is typically all to use to tie up weldering combination in the process that roof steel bar is bound on moulding bed, improves the firm journey of roof steel bar
Degree；By welding semicircular locating framework in the design path of hogging moment bellows to hogging moment ripple in roof steel bar
Pipe is positioned；If the position of hogging moment bellows and the position of reinforcing bar clash in the process of practical operation, adjustment
The position of skeleton reinforcing steel bar ensures that the position of hogging moment bellows coincide with design position；It is attached to hogging moment bellows
When need ensure hogging moment bellows seam crossing it is tight, hogging moment bellows junction using diameter be more than hogging moment bellows
The casing of 5mm is sleeved on seam crossing and is attached；
（11）Roof steel bar integral hoisting：Be lifted into above internal model using truss by the roof steel bar bound is whole, into
Prevent from causing the flexural deformation of reinforcing bar in the process of row lifting；
（12）External mold fixed frame in installation：The installation of external mold fixed frame in external mold both ends carry out, interior external mold fixed frame is by internal model
On the end of supporting rod and the end of external mold link together, using being connected by the way of threaded connection in the process of connection
It connects；In order to improve the stability of interior external mold connection, interior external mold fixed frame is attached by more bolts with external mold；
（13）Connecting steel wire ropes and strainer：Two steel wire ropes, two steel are connected on connection boom end and fixed ring respectively
Cord is connected by strainer, and strainer tenses two steel wire ropes so that steel wire rope is in tensioned state；
（14）Pour concrete：Check that blending station, supply line, the running gear of gantry crane and lifting component make before being poured
It is whether intact with state；Concrete water mud enters in bellows in the process poured in order to prevent so that ripple
Blockage can not carry out the tensioning in later stage, it should the hard that internal diameter is less than inside diameter of bel 5mm is inserted into bellows duct
Plastic tube, the continuous slide plastic pipe in the process poured prevent the duct of bellows from generating blocking；What is poured
It is limited using antifouling limiting slot to pouring in process, prevents concrete from being polluted to reinforcing bar；It is continuous in casting process
It vibrates to concrete so that concreting uniformly and by the bubble that concreting process generates vibrates；
（15）Form removal：The concrete strength poured can reach its surface when do not collapse with crack, to internal model and
Side form is removed, and steel wire rope, strainer and interior external mold fixed frame are first removed in the process of dismounting, then removes internal model,
External mold is finally removed, is all first demounting bolt in the process of dismounting, is then torn open in careful each section by internal model and external mold
It unloads；
（16）Health：Water pipe is all set in two coxostermums, top plate and the inside of box beam, nozzle is set on water pipe, utilizes water pump
Pressurization sprays box beam；It needs to ensure that each part of beam body can keep moistening, top plate needs to use during maintenance
Geotextiles are covered, the generally no less than seven days time of health；Health carries out prestressed stretch-draw to box beam again after terminating.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. one kind preventing floating construction method in combined box beam internal model, it is characterised in that：Include the following steps：
（1）Precast pedestal：The preparation of precast pedestal is carried out using concrete, the requirement of caisson platform precasting has enough for the lower layer of pedestal
Rigidity, and pedestal needs be placed on the ground with excellent support effect, the pedestal in entire work progress
Sinking can not be more than 2mm；
（2）Bottom die of box-beam is installed on pedestal：Bed die is processed by steel plate, is directly installed on precast pedestal, the two of bed die
End is welded with the fixed ring for steel wire rope to be fixed；
（3）Bottom, web reinforcement and fixed web corrugation pipe are bound on moulding bed：Blanking and curved is carried out to reinforcing bar according to drawing first
Song, then bottom, web reinforcement binding are carried out on moulding bed, it is typically improved using weldering combination is tied up in the process that reinforcing bar is bound
Bottom, web reinforcement entirety soundness；If the position of the position of web corrugation pipe and reinforcing bar in the process of practical operation
It clashes, adjusts the position of skeleton reinforcing steel bar, ensure that the position of web corrugation pipe coincide with design position；To web corrugation pipe
It is attached and is the need to ensure that bellows seam crossing is tight, web corrugation pipe junction is more than web corrugation pipe 5mm using diameter
Casing be sleeved on seam crossing and be attached；
（4）Polishing template：Mainly by the template surface of external mold rusty stain and last casting complete after remained on surface
Mucilage remove it is clean；
（5）Smearing release agent：In uniform smearing release agent on clean outer mould surface of polishing, coagulation after terminating convenient for cast
Native box beam is detached from external mold；
（6）External mold is installed：External mold is made of side form, outer mould bases, external mold diagonal brace etc., will be on bed die in the process of installation external mold
Fixed ring it is exposed, be convenient for construction in later period；
（7）Integral hoisting bottom, web reinforcement：It is lifted into bottom, web reinforcement are whole on bed die, prevents in the mistake lifted
Cheng Dangzhong reinforcing bars deform；
（8）End head formwork is installed：It needs the surface cleaning by end head formwork clean before installation end head formwork, ensures end head formwork
Surfacing is bright and clean, no concave-convex deforms and remaining mucilage；The designated position of mould lifting will be held after cleaning out using suspender,
Then bolt is utilized to connect end mould with side form with bed die and end mould；By the gap and end between end head formwork and interior external mold
Gap between head reinforcing bar and end mould is blocked using foam gap filler；
（9）Internal model is installed：Two length directions branch identical with internal model length direction is fixed in inner cavity top both sides among internal model
Strut, and the inner cavity of internal model is stretched out at the both ends of supporting rod；It needs to clear up the template of internal model before internal model installation, clearly
Except the remaining mucilage and rusty stain of inner mould surface, uniform smearing release agent after cleaning out；
（10）Roof steel bar and fixed hogging moment bellows are bound on moulding bed：Blanking and curved is carried out to reinforcing bar according to drawing requirement
Song is typically all to be combined using tying up weldering in the process that roof steel bar is bound on moulding bed, improves the soundness of roof steel bar；
If the position of hogging moment bellows and the position of reinforcing bar clash in the process of practical operation, the position of skeleton reinforcing steel bar is adjusted
It sets, ensures that the position of hogging moment bellows coincide with design position；It needs to ensure when being attached hogging moment bellows negative
Moment of flexure bellows seam crossing is tight, and casing of the hogging moment bellows junction using diameter more than hogging moment bellows 5mm is sleeved on
Seam crossing is attached；
（11）Roof steel bar integral hoisting：By being lifted into above internal model for the roof steel bar bound entirety, what is lifted
Prevent bar bending from deforming in process；
（12）External mold fixed frame in installation：The installation of external mold fixed frame in external mold both ends carry out, interior external mold fixed frame is by internal model
On the end of supporting rod and the end of external mold link together, using being connected by the way of threaded connection in the process of connection
It connects；In order to improve the stability of interior external mold connection, interior external mold fixed frame is attached by more bolts with external mold；
（13）Connecting steel wire ropes and strainer：Two steel wire ropes, two steel are connected on connection boom end and fixed ring respectively
Cord is connected by strainer, and strainer tenses two steel wire ropes so that steel wire rope is in tensioned state；
（14）Pour concrete：To concrete is poured into a mould between internal model and external mold, constantly vibrate to concrete in casting process,
So that concreting uniformly and by the bubble that concreting process generates vibrates；
（15）Form removal：The concrete strength poured can reach its surface when do not collapse with crack, to internal model and
Side form is removed, and steel wire rope, strainer and interior external mold fixed frame are first removed in the process of dismounting, then removes internal model,
External mold is finally removed, is all first demounting bolt in the process of dismounting, it is then careful to dismantle internal model and each section of external mold
Under；
（16）Health：Water pipe is all set in two coxostermums, top plate and the inside of box beam, nozzle is set on water pipe, utilizes water pump
Pressurization sprays box beam；It needs to ensure that each part of beam body can keep moistening, the time of health is generally many
Yu Qitian；Health carries out prestressed stretch-draw to box beam again after terminating.
2. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（3）
In on moulding bed carry out bottom, web reinforcement binding before need to clean rebar surface, remove rebar surface oil stain,
Paint dirt, outer skin and iron rust etc., the process of progress iron rust removing may be used wire brush in the middle and be purged.
3. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（3）
It when carrying out blanking and bending to reinforcing bar, is bent using numerical-control bending machine in the process of reinforcing bar bending, ensures bending angle
The precision of degree.
4. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（3）
In web corrugation pipe is positioned by welding semicircular locating framework in the design path of web corrugation pipe.
5. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（14）
It is middle poured before check blending station, supply line, the running gear of gantry crane and lifting component use state it is whether complete
It is good.
6. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（14）
In in bellows duct be inserted into internal diameter be less than inside diameter of bel 5mm plastic conduit, in the process poured constantly
Slide plastic pipe.
7. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（14）
It is limited using antifouling limiting slot to pouring in the process poured.
8. according to claim 1 prevent floating construction method in combined box beam internal model, it is characterised in that：The step（16）
In conserved during top plate need to be covered with geotextiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489814.4A CN108560426A (en) | 2018-05-21 | 2018-05-21 | Prevent floating construction method in combined box beam internal model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489814.4A CN108560426A (en) | 2018-05-21 | 2018-05-21 | Prevent floating construction method in combined box beam internal model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108560426A true CN108560426A (en) | 2018-09-21 |
Family
ID=63539359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810489814.4A Pending CN108560426A (en) | 2018-05-21 | 2018-05-21 | Prevent floating construction method in combined box beam internal model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108560426A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421700A (en) * | 2019-08-28 | 2019-11-08 | 广东省水利水电第三工程局有限公司 | A kind of aerated core anti-deformation hardened system and its construction method of installation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538894A (en) * | 2009-03-20 | 2009-09-23 | 湖南省沙坪建筑有限公司 | Construction method for resisting uplift in internal mold of concrete box |
| CN105345926A (en) * | 2015-09-25 | 2016-02-24 | 安徽水利开发股份有限公司 | Prefabricated construction method for prestressed concrete box girder |
| CN105714684A (en) * | 2016-02-24 | 2016-06-29 | 中国一冶集团有限公司 | Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method |
| CN107471414A (en) * | 2017-09-20 | 2017-12-15 | 中铁二十二局集团第三工程有限公司 | A kind of construction method of draw type steel internal mould and pre-cast hollow slab |
| CN207344808U (en) * | 2017-09-20 | 2018-05-11 | 中铁二十二局集团第三工程有限公司 | A kind of draw type steel internal mould |
-
2018
- 2018-05-21 CN CN201810489814.4A patent/CN108560426A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538894A (en) * | 2009-03-20 | 2009-09-23 | 湖南省沙坪建筑有限公司 | Construction method for resisting uplift in internal mold of concrete box |
| CN105345926A (en) * | 2015-09-25 | 2016-02-24 | 安徽水利开发股份有限公司 | Prefabricated construction method for prestressed concrete box girder |
| CN105714684A (en) * | 2016-02-24 | 2016-06-29 | 中国一冶集团有限公司 | Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method |
| CN107471414A (en) * | 2017-09-20 | 2017-12-15 | 中铁二十二局集团第三工程有限公司 | A kind of construction method of draw type steel internal mould and pre-cast hollow slab |
| CN207344808U (en) * | 2017-09-20 | 2018-05-11 | 中铁二十二局集团第三工程有限公司 | A kind of draw type steel internal mould |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421700A (en) * | 2019-08-28 | 2019-11-08 | 广东省水利水电第三工程局有限公司 | A kind of aerated core anti-deformation hardened system and its construction method of installation |
| CN110421700B (en) * | 2019-08-28 | 2024-02-09 | 广东省水利水电第三工程局有限公司 | Anti-deformation reinforcing system for inflatable core mold and installation and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106677211B (en) | Wall tears assembled piping lane aluminum dipping form trolley system and its construction method open with the top plate whole morning poured | |
| CN106677069B (en) | A kind of construction method of bridge pier integral formwork support one-shot forming structure | |
| CN104846744B (en) | Construction method for pouring and forming urban viaduct curve type pier stud in one-off mode | |
| CN206538787U (en) | A kind of wall tears assembled piping lane aluminum dipping form chassis system open with the top plate whole morning poured | |
| CN110509417A (en) | A kind of floorings are prefabricated and its installation method | |
| CN108638324A (en) | A kind of construction method of prefabricated case beam | |
| CN101481944A (en) | Method for mounting high pier, tower over-form construction reinforced bar and movable support thereof | |
| CN107338727A (en) | A kind of overall demolition, installation anticollision wall form and its walking track crane move system | |
| CN107574762A (en) | A kind of construction method for strengthening Cast-in-situ Beam 0# block construction qualities | |
| CN110512524A (en) | A kind of bridge pier column safe construction method | |
| CN103774561A (en) | Streamline operation construction method of precast small box girders for highway in assembling mode | |
| CN100513696C (en) | Pier body cap cracking body outside stress reinforcing method | |
| CN106042173B (en) | Bridge production system | |
| CN108797513A (en) | A kind of normalized assembled pile foundation wharfs structure and its method of construction | |
| CN110409319A (en) | A kind of cast-in-place floorings bracket of large span steel reinforced concrete combination beam and construction method | |
| CN206512605U (en) | A kind of overall demolition, installation anticollision wall form and its walking track crane move system | |
| CN110485636A (en) | A kind of cavity frame column and its forming method | |
| CN108560426A (en) | Prevent floating construction method in combined box beam internal model | |
| CN206667070U (en) | A kind of suspension holdfast for being used for constructing tie beam in water | |
| CN108867398A (en) | A kind of construction method of bridge construction super-small space double limb pier stud | |
| CN111074950B (en) | Pre-closed advanced water stop post-cast strip for basement outer wall and construction method | |
| CN208009267U (en) | A kind of middle cross beam tensioning protective platform | |
| CN103243912A (en) | Multilayer no-board frame structure constructing method | |
| CN111893889A (en) | Main bridge closure section construction method | |
| CN101550724A (en) | Construction method of large-span post-tensioned prestressed longitudinal and transverse frame beams |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180921 |