CN109763428A - Box beam formwork - Google Patents
Box beam formwork Download PDFInfo
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- CN109763428A CN109763428A CN201910041030.XA CN201910041030A CN109763428A CN 109763428 A CN109763428 A CN 109763428A CN 201910041030 A CN201910041030 A CN 201910041030A CN 109763428 A CN109763428 A CN 109763428A
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- plate
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- core model
- box beam
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Abstract
The invention discloses a kind of box beam formworks, including pedestal, external mold, core model, hold mould, the external mold includes the bottom plate being fixed on the base, it is symmetricly set on the side plate of bottom plate two sides, the bottom plate and side plate form the accommodating space for placing core model, the hydraulic cylinder of driving side board translational is fixed on the pedestal, the end molding is closed external mold both ends and is fixed on the base, the core model is located in accommodating space and both ends are pierced by from end mould, electromagnetism iron plate is fixed on the side plate outer wall, bar assembly is provided between the core model and side plate, bar assembly include both ends respectively with side plate inner wall, the steel sleeve that core model outer wall abuts, protrude into the screw rod that steel sleeve is threadedly coupled with steel sleeve, screw rod passes through core model far from one end of steel sleeve and connects a fixture nut；By separating external mold, convenient for the taking-up of box beam.
Description
Technical field
The present invention relates to bridge constructions, in particular to box beam formwork.
Background technique
Box beam is one kind of science of bridge building central sill, and inside is hollow shape, and there are the edge of a wing in top two sides, similar chest, thus
Name.Divide single case, more casees.
The box beam of reinforced concrete structure is divided into prefabricated case beam and cast-in-situ box girder.In the box beam joining rack that independent place is prefabricated
Bridge machine can be set up after the completion of the engineering of lower part, can be accelerated project progress, be saved the duration；Cast-in-situ box girder is chiefly used in Large Scale and Continuous
Bridge.Common is divided with material, there are mainly two types of, first is that prestressed reinforced concrete box beam, first is that steel box-girder.Wherein, prestress steel
Muscle concrete box beam is site operation, and other than having longitudinal prestressing, some also set up transverse prestress；Steel box-girder is usually in factory
In process after be transported to in-site installation again, have full steel structure, also have part plus reinforced concrete pave-load layer.
Wherein steel box-girder is called ntitorque steel plate box-girder, is the common structure type of Large Span Bridges.It is larger to be commonly used in span
Bridge on.External form is as a chest therefore is called steel box-girder.
Ntitorque steel plate box-girder be in engineering frequently with structure type be research tabula plate spacing to simple under Concentrated load
The influence of branch steel box-girder distortion compares it under Concentrated load by the way that the simply supported steel box girder of different number diaphragm plate is arranged
Distortion effect and rigid torsion effect, obtain maximum distortion effect with the change curve of diaphragm plate quantity on box girder web top
Apply load, is carried out by four kinds of distortion, rigid torsion, symmetric curvature and eccentric load operating conditions using the method for load decomposition
It calculates.
Box beam needs to pour using mold, and current box beam formwork includes external mold, core model, holds mould, and wherein external mold is
Overall structure, that takes out box beam be easy to cause corner to damage.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of box beam formwork, convenient for taking for box beam
Out.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of box beam formwork, including bottom
Seat, external mold, core model, end mould, the external mold includes the bottom plate being fixed on the base, the side plate for being symmetricly set on bottom plate two sides, institute
It states bottom plate and side plate forms the accommodating space for placing core model, the hydraulic cylinder of driving side board translational is fixed on the pedestal, it is described
End molding is closed external mold both ends and is fixed on the base, and the core model is located in accommodating space and both ends are pierced by from end mould, the side
Be fixed with electromagnetism iron plate on plate outer wall, be provided with bar assembly between the core model and side plate, bar assembly include both ends respectively with side
Plate inner wall, core model outer wall abut steel sleeve, protrude into the screw rod that steel sleeve is threadedly coupled with steel sleeve, screw rod is far from steel
One end of sleeve processed passes through core model and connects a fixture nut.
When box girder webs, which finish, to be taken out, lower mould is torn open, screw rod and fixture nut are removed, so that core model and box beam
Core model is taken out by large-scale crane later, is then moved outside Driven by Hydraulic Cylinder side plate so that side plate is separated with box beam, at this time by separation
Box beam fog room can be hung to using large-scale crane to conserve.Due to side plate will receive after filling concrete is good it is outside
Thrust, therefore this programme avoids moving outside side plate using the magneticaction of electromagnet and steel sleeve, hydraulic cylinder as needed whether
Pressure maintaining, if magneticaction is enough, then hydraulic cylinder is not necessarily to pressure maintaining, i.e., hydraulic cylinder is not by side plate thrust.Steel sleeve can bear to draw
Power or pressure, steel sleeve, which stays in, enhances box beam intensity inside box beam, the part that the past takes steel sleeve only to connect with screw rod
To be hollow, remaining is solid.
Further, the steel sleeve is welded with steel mesh, the steel mesh and side plate inner wall by one end of proximal panel inner wall
Interval setting, the steel mesh are parallel with plane where side plate inner wall.
On the one hand steel mesh increases the magnetic force with electromagnetism iron plate, on the other hand stay in box beam after pouring, and enhances case
Beam strength, steel mesh and side plate inner wall interval, avoid steel mesh exposed and are easy to happen corrosion.
Further, a support component is set in the core model, and support component includes that horizon bar and vertical bar are welded on one
The supporting network formed is acted, the setting of supporting network uniform intervals is multiple, and adjacent supporting network is welded together by connecting rod, connecting rod and branch
Support net is vertical.
The setting of support component is for promoting the anti-pressure ability of core model, so that core model is not susceptible to shape under concrete pressure
Become, supporting network is generally abutted with core model.
Further, cushion block is provided between the fixture nut and screw rod, the cushion block is close to the end face of fixture nut
It is bonded with fixture nut.
Due to core model side be it is inclined, be such as not provided with cushion block, contact of the fixture nut with core model be point contact or
Line contact, cushion block are generally elasticity, on the one hand can promote pretightning force, and on the other hand contacting with fixture nut is face contact,
Stress is not susceptible to concentrate and damage.
Further, the side plate outer wall fixes a positioning plate, and the positioning plate is horizontally disposed, electromagnet board bottom portion
It is abutted with positioning plate.
The installation of the setting convenient electromagnetic iron plate of positioning plate, quickly positions for installing electromagnetism iron plate.
Further, the side plate far from extending to form and side straight down after one end horizontal extension one end distance of bottom plate
The spaced connecting plate of plate, the piston rod of the hydraulic cylinder are fixedly connected with a drive rod, and the drive rod passes through connecting plate simultaneously
Two fastening nuts are connected, fastening nut abuts inside and outside connecting plate.
The connection with connecting plate is so realized in such a way that fastening nut is connect with drive rod, so facilitates installation,
There is middle drive rod at least part external screw thread and fastening nut to realize cooperation.
Further, reinforcing rod is fixed on the connecting plate, the reinforcing rod passes through connecting plate, electromagnetism iron plate and side plate
Fixed, two rows are arranged in the reinforcing rod.
Reinforcing rod is used to enhance the bonding strength between side plate and connecting plate, so that the space between side plate and connecting plate is not
Easily deformation occurs.
Further, arc panel is fixed at four interior angles of the core model, the arc panel is filled out with the formation of core model inner wall
Fill chamber.
On the one hand the setting of arc panel enhances the bonding strength at four interior angles of core model, be not susceptible to stress and concentrate and break
It is bad, on the other hand due to forming a filled cavity, reinforcement operation can be carried out by penetration concrete when needed.
In conclusion the invention has the following advantages: the present invention can take out box beam, and formwork erecting structure is stablized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is longitudinal schematic cross-sectional view of embodiment；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4 is that the section view of core model is illustrated to be intended to.
Appended drawing reference: 1, pedestal；2, external mold；21, bottom plate；22, side plate；23, guide plate；24, connecting plate；3, core model；31,
Arc panel；32, filled cavity；4, mould is held；41, it is open；5, hydraulic cylinder；51, drive rod；52, fastening nut；61, positioning plate；62,
Reinforcing rod；7, electromagnetism iron plate；81, steel sleeve；82, screw rod；83, fixture nut；84, cushion block；91, horizon bar；92, vertical
Bar；93, connecting rod；94, steel mesh.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
A kind of box beam formwork, such as Fig. 1, including pedestal 1, external mold 2, core model 3, end mould 4, and be steel.
Such as Fig. 2, external mold 2 includes the bottom plate 21 being fixed on pedestal 1, the side plate 22 for being symmetricly set on 21 two sides of bottom plate, side
22 bottom of plate is abutted with bottom plate 21, and side plate 22 is inclined outwardly setting with 21 place of abutting of bottom plate certainly；22 bottom of side plate welding, one guiding
The bottom of plate 23, guide plate 23 is abutted with 21 upper surface of bottom plate, face of the guide plate 23 far from side plate 22 Yu the intersection of bottom plate 21
For arcwall face, because of the guiding of arcwall face, therefore when concreting, concrete is not easily accessible side plate 22 and bottom
The intersection of plate 21.Bottom plate 21 and side plate 22 form the accommodating space for placing core model 3.
Such as Fig. 2, one end horizontal extension one end of side plate 22 far from bottom plate 21 extends to form straight down after and side plate
22 spaced connecting plates 24.Hydraulic cylinder 5 is fixed on pedestal 1, multiple, liquid is arranged along 21 length direction of bottom plate in hydraulic cylinder 5
The piston rod of cylinder pressure 5 is fixedly connected with a drive rod 51, and drive rod 51 passes through connecting plate 24 and connects two fastening nuts 52, fastening
Nut 52 abuts inside and outside connecting plate 24.
Such as Fig. 2,22 exterior bottom of side plate fixes a horizontally disposed positioning plate 61, and electromagnetism iron plate 7 and 22 outer wall of side plate paste
It closes and bottom is abutted with positioning plate 61.Reinforcing rod 62 is fixed on connecting plate 24, reinforcing rod 62 passes through connecting plate 24, electromagnetism iron plate
7 is fixed with side plate 22, and two rows are arranged in reinforcing rod 62.
Such as Fig. 1, end 4 adult of mould is rectangular slab, and center opens up an opening 41 being pierced by for core model 3, and end mould 4 closes external mold
2 both ends are simultaneously bolted on pedestal 1, and end mould 4 is connect by bolt with side plate 22, bottom plate 21 simultaneously.
Such as Fig. 1, core model 3 is pipeline shape structure, and cross section size is identical as 41 sizes of opening, and it is empty that core model 3 is located at accommodating
Interior and both ends are pierced by from the opening 41 of end mould 4.Such as Fig. 2-3, bar assembly, bar assembly packet are provided between core model 3 and side plate 22
It includes steel sleeve 81 that both ends abut with 22 inner wall of side plate, 3 outer wall of core model respectively, protrude into steel sleeve 81 and 81 spiral shell of steel sleeve
The screw rod 82 of line connection, screw rod 82 pass through core model 3 far from one end of steel sleeve 81 and connect a fixture nut 83；Fixture nut
Cushion block 84 is provided between 83 and screw rod 82, cushion block 84 is the sleeve-like structure that one end is inclined-plane, is made of rubber material, cushion block 84
End face close to fixture nut 83 is bonded with fixture nut 83, and other end is bonded with 3 inner wall of core model.
Such as Fig. 4, arc panel 31 is fixed at four interior angles of core model 3, arc panel 31 and 3 inner wall of core model form filled cavity
32.On the one hand the setting of arc panel 31 enhances the bonding strength at 3 four interior angles of core model, be not susceptible to stress and concentrate and destroy,
On the other hand due to forming a filled cavity 32, reinforcement operation can be carried out by penetration concrete when needed.
Such as Fig. 2, core model 3 is interior to be arranged a support component, and support component includes that horizon bar 91 and vertical bar 92 weld together
The supporting network of formation, the setting of supporting network uniform intervals is multiple, and adjacent supporting network is welded together by connecting rod 93, connecting rod 93 with
Supporting network is vertical, and supporting network is abutted with 3 inner wall of core model, facilitates taking-up.
Such as Fig. 2, steel sleeve 81 is welded with steel mesh 94 by one end of 22 inner wall of proximal panel, between 22 inner wall of steel mesh 94 and side plate
Every setting, 2-3cm or so is divided between general, steel mesh 94 is parallel with plane where 22 inner wall of side plate.Steel mesh 94 on the one hand increase with
The magnetic force of electromagnetism iron plate 7, on the other hand stays in box beam after pouring, enhancing box beam intensity, in steel mesh 94 and side plate 22
Wall interval avoids steel mesh 94 exposed and is easy to happen corrosion.
It takes out box beam process: tearing lower mould 4 open, take out support component；Screw rod 82 and fixture nut 83 are removed, so that core model
3 and box beam separation, core model 3 is taken out by large-scale crane later；Then hydraulic cylinder 5 drive side plate 22 outside move so that side plate 22 with
Box beam can be hung to fog room using large-scale crane at this time and conserved by box beam separation.
It needing first to open electromagnetism iron plate 7 before pouring, can be closed after concrete initial set, electromagnetism iron plate 7 is DC electromagnet,
Electromagnetism iron plate 7 can connect alternating current, voltage needed for being formed using rectifier, transformer etc., which is routine techniques.
Claims (8)
1. a kind of box beam formwork, including pedestal (1), external mold (2), core model (3), end mould (4), it is characterised in that: the external mold (2)
Including be fixed on pedestal (1) bottom plate (21), be symmetricly set on the side plate (22) of bottom plate (21) two sides, the bottom plate (21) with
Side plate (22) forms the accommodating space for placing core model (3), and the hydraulic cylinder of driving side plate (22) translation is fixed on the pedestal (1)
(5), it the end mould (4) closing external mold (2) both ends and is fixed on pedestal (1), it is interior and two that the core model (3) is located at accommodating space
End is pierced by from end mould (4), is fixed with electromagnetism iron plate (7) on side plate (22) outer wall, between the core model (3) and side plate (22)
Be provided with bar assembly, bar assembly include both ends abutted respectively with side plate (22) inner wall, core model (3) outer wall steel sleeve (81),
Protrude into the screw rod (82) that steel sleeve (81) is threadedly coupled with steel sleeve (81), screw rod (82) far from steel sleeve (81) one
End is across core model (3) and connects a fixture nut (83).
2. box beam formwork according to claim 1, it is characterized in that: the steel sleeve (81) is by proximal panel (22) inner wall
One end is welded with steel mesh (94), and the steel mesh (94) and side plate (22) inner wall interval are arranged, the steel mesh (94) and side plate (22)
Plane where inner wall is parallel.
3. box beam formwork according to claim 1 a, it is characterized in that: support component, support group are arranged in the core model (3)
Part includes horizon bar (91) and the supporting network that vertical bar (92) is welded together to form, and multiple, phase is arranged in supporting network uniform intervals
Adjacent supporting network is welded together by connecting rod (93), and connecting rod (93) is vertical with supporting network.
4. box beam formwork according to claim 1, it is characterized in that: being arranged between the fixture nut (83) and screw rod (82)
Have cushion block (84), the cushion block (84) is bonded close to the end face of fixture nut (83) with fixture nut (83).
5. box beam formwork according to claim 1, it is characterized in that: the side plate (22) outer wall fixes a positioning plate (61),
The positioning plate (61) is horizontally disposed, and electromagnetism iron plate (7) bottom is abutted with positioning plate (61).
6. box beam formwork according to claim 1, it is characterized in that: the one end of the side plate (22) far from bottom plate (21) is horizontal
Extension one end extends to form straight down after and side plate (22) spaced connecting plate (24), the hydraulic cylinder (5)
Piston rod is fixedly connected a drive rod (51), and the drive rod (51) passes through connecting plate (24) and connects two fastening nuts
(52), fastening nut (52) abuts inside and outside connecting plate (24).
7. box beam formwork according to claim 1, it is characterized in that: reinforcing rod (62) are fixed on the connecting plate (24),
The reinforcing rod (62) passes through connecting plate (24), electromagnetism iron plate (7) and side plate (22) and fixes, and reinforcing rod (62) setting is up and down
It is two rows of.
8. box beam formwork according to claim 1, it is characterized in that: being fixed with arc at four interior angles of the core model (3)
Plate (31), the arc panel (31) and core model (3) inner wall form filled cavity (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041030.XA CN109763428B (en) | 2019-01-16 | 2019-01-16 | Box girder formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041030.XA CN109763428B (en) | 2019-01-16 | 2019-01-16 | Box girder formwork |
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| Publication Number | Publication Date |
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| CN109763428A true CN109763428A (en) | 2019-05-17 |
| CN109763428B CN109763428B (en) | 2020-10-27 |
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ID=66452371
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|---|---|---|---|
| CN201910041030.XA Active CN109763428B (en) | 2019-01-16 | 2019-01-16 | Box girder formwork |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147839A (en) * | 2021-11-23 | 2022-03-08 | 江苏月生达机械制造有限公司 | Outer die template structure of large-scale prefabricated case roof beam |
| CN115070910A (en) * | 2022-06-21 | 2022-09-20 | 湖州天逸预制构件有限公司 | Be used for prefabricated plate preparation template installation device |
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| CN109763428B (en) | 2020-10-27 |
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