Steel-concrete combined bridge suspension formwork
By assembling and tensioning double-stacked channel steel on the steel box girder on the bridge deck flange, and combining the splicing of horizontal and longitudinal support steel pipes, the problems of high requirements for stacked plate splicing and cracks in the later stage of the bridge are solved, and structural stability is improved simplifies the construction process.
Patent Information
- Application Number
- CN202421041384.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-14
AI Technical Summary
At this stage, the technology of stacking plate splicing of steel-concrete composite bridges is high during construction and is prone to cracks in later operation, which affects the function and life of the bridge.
Assemble the steel box girder on the flange of the bridge deck, the double-stacked channel steel is tensioned as a whole, and the splicing of the transverse support steel pipe and the longitudinal support steel pipe is combined to form support to improve structural stability and lay it on the transverse support steel pipe. Square wood formwork, the support of the flange formwork can be completed without erecting a floor scaffold.
It improves the accuracy of the installation positioning of the beam body, ensures structural stability, simplifies the construction process, and reduces the risk of cracks in the later stage of the bridge.
Smart Images
Figure CN222251787U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steel-concrete composite bridges, and specifically relates to a steel-concrete composite bridge suspension formwork. Background Art
[0002] With the increasing requirements of traffic construction, bridge construction is also developing in the direction of faster, longer and lighter. Steel-concrete composite bridges give full play to the advantages of high bearing capacity, corrosion resistance and good durability of steel. At present, most steel-concrete composite bridges at home and abroad are composed of steel box beams + composite slabs + reinforced concrete cast-in-place surfaces. The construction speed is fast, but the requirements for composite slab splicing technology are high and the bridge is prone to cracks during the later operation, which affects the use function and life of the bridge. Utility Model Content
[0003] In order to solve or partially solve the problems existing in the related technology, the solution provided in this application is assembled on the steel box girder of the bridge deck flange, and the double-jointed channel steel can be tensioned as a whole. At the same time, the splicing of the transverse supporting steel pipe and the longitudinal supporting steel pipe is combined to form a support to ensure the stability of the structure and improve the installation and positioning accuracy of the beam body. The square wood formwork is laid on the transverse supporting steel pipe, and the flange formwork support can be completed without setting up a ground scaffolding.
[0004] The first aspect of the present application provides a steel-concrete composite bridge suspension formwork, a steel-concrete composite bridge suspension formwork, characterized in that it includes double-jointed channel steel, steel pipe support beams, screw rods, square wood formwork, transverse support steel pipes, U-bolts, and longitudinal support steel pipes;
[0005] The double-jointed channel steel is installed in the horizontal direction, and the bottom is connected to the steel box beam through a vertically installed longitudinal support steel pipe to form a support. U-shaped bolts are welded on the steel box beam, and the ends of the U-shaped bolts pass through the double-jointed channel steel and are locked;
[0006] A transverse supporting steel pipe connected to the steel box beam is arranged at the bottom of the double-jointed channel steel, and the double-jointed channel steel and the transverse supporting steel pipe are locked by installing a vertically arranged screw rod, and a steel pipe supporting beam resting on the screw rod is arranged at the top of the double-jointed channel steel, and nuts and washers are installed on the screw rod to lock the steel pipe supporting beam to the top of the double-jointed channel steel;
[0007] A square wood template is laid on the supporting steel pipe.
[0008] Optionally, corresponding shear studs are provided on the steel box girder at the bottom of the supporting steel pipe and the U-bolt.
[0009] Beneficial effects of the utility model:
[0010] The solution provided in this application is assembled on the steel box girder of the bridge deck flange. The double-jointed channel steel can be tensioned as a whole. At the same time, the transverse supporting steel pipe and the longitudinal supporting steel pipe are spliced to form a support to ensure structural stability and improve the installation and positioning accuracy of the beam body. Square timber formwork is laid on the transverse supporting steel pipe, and the flange formwork support can be completed without setting up a ground scaffolding. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0012] In the figure, 1-double-jointed channel steel; 2-steel pipe support beam; 3-screw; 4-bamboo plywood; 5-square wood; 6-transverse supporting steel pipe; 7-steel box beam; 8-shear nail; 9-U-bolt; 10-longitudinal supporting steel pipe. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.
[0014] In the description of the present invention, unless otherwise specified, terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.
[0015] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0016] At present, most steel-concrete composite bridges at home and abroad are composed of steel box beams + composite slabs + cast-in-place reinforced concrete surfaces. The construction speed is fast, but the composite slab splicing technology is high and the bridge is prone to cracks during the later operation, affecting the bridge's function and life.
[0017] In response to the above problems, the solution provided in this application is to assemble on the steel box girder of the bridge deck flange, and the double-jointed channel steel can be tensioned as a whole. At the same time, the transverse supporting steel pipe and the longitudinal supporting steel pipe are spliced together to form a support to ensure structural stability and improve the installation and positioning accuracy of the beam body. Square timber formwork is laid on the transverse supporting steel pipe, and the flange formwork support can be completed without setting up ground scaffolding.
[0018] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0019] See also Figure 1 The steel-concrete composite bridge suspension formwork device provided in the present application includes a double-jointed channel steel 1, a steel pipe support beam 2, a screw rod 3, a square wood formwork, a transverse support steel pipe 6, a U-bolt 9, and a longitudinal support steel pipe 10;
[0020] The double-jointed channel steel 1 is installed in the horizontal direction, and the bottom is connected to the steel box girder 7 through a vertically installed longitudinal support steel pipe 10 to form a support. A U-shaped bolt 9 is welded on the steel box girder 7, and the end of the U-shaped bolt 9 passes through the double-jointed channel steel 1 and is locked;
[0021] A transverse support steel pipe 6 connected to the steel box beam 7 is arranged at the bottom of the double-jointed channel steel 1, and the double-jointed channel steel 1 and the transverse support steel pipe 6 are locked by installing a vertically arranged screw rod 3. A steel pipe support beam 2 resting on the screw rod 3 is arranged on the top of the double-jointed channel steel 1, and nuts and washers are installed on the screw rod 3 to lock the steel pipe support beam 2 to the top of the double-jointed channel steel 1;
[0022] In this embodiment, a square wood formwork is laid on the supporting steel pipe, and the square wood formwork is made of square wood, and a bamboo plywood is arranged on the top.
[0023] Specifically, corresponding shear nails 8 can be set on the steel box girder 7 at the bottom of the longitudinal support steel pipe 10 and the U-bolt 9. During the construction process, the longitudinal support steel pipe 10 is directly inserted into the corresponding shear nail 8, and the U-bolt 9 can be connected to the shear nail 8 through the U-shaped end hole.
[0024] In this embodiment, a double-jointed channel steel 1 is used as a cantilever, and a longitudinal supporting steel pipe 10 is used to support the double-jointed channel steel 1 on the outside of the steel box girder 7. A U-bolt 9 pull rod is welded to the upper bolt of the steel box girder 7 on one side to tension the double-jointed channel steel 1. A suspension beam consisting of two steel pipe support beams 2 is arranged along the upper side of the tail of the double-jointed channel steel 1. A screw rod 3 is used as a suspension rod to lock the lower transverse supporting steel pipe 6. The outer edge screw rod 3 is fixed on the steel pipe support beam 2, and the middle two screw rods 3 are fixed on the double-jointed channel steel 1. A square wooden formwork is laid on the bottom transverse supporting steel pipe 6 for formwork support.
[0025] Specifically, a 200cm long double-jointed 12# channel steel is used as the load-bearing beam of the hanging formwork, and a φ48mm×3.5mm longitudinal support steel pipe 10 is used to support the load-bearing channel steel beam at the positions of the two rows of shear nails 8 inside and outside the edge steel box beam 7. The U-bolts 9 are welded to the steel box beam 7, and the U-bolts are used as pull rods to fix the ends of the double-jointed channel steel 1, and the cantilever hanger system is installed; after the hanger is installed, the screw rod 3 is installed, and the screw rod 3 is passed through the middle of the double-jointed channel steel 1 in the middle area of the cantilever, and the upper end is fixed with nuts and steel washers, and the double-row horizontal support steel pipe 6 is locked with a butterfly card at the lower end, two screw rods 3 are set in the middle, and one screw rod 3 is set at the outer edge end. Two steel pipe support beams 2 are used on the outer eaves of the channel steel to make the outer eaves hanging beam on the channel steel, and the screw 3 passes through the middle of the steel pipe to fix the lower end bracket, and the support system is completed. The square wood and formwork are laid on the horizontal support steel pipe 6, and the flange formwork support can be completed without setting up a ground scaffolding.
[0026] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A steel-concrete composite bridge suspension formwork, characterized in that: Including double-jointed channel steel, steel pipe support beam, screw rod, square wood formwork, horizontal support steel pipe, U-bolt, and longitudinal support steel pipe; The double-jointed channel steel is installed in the horizontal direction, and the bottom is connected to the steel box beam through a vertically installed longitudinal support steel pipe to form a support. U-shaped bolts are welded on the steel box beam, and the ends of the U-shaped bolts pass through the double-jointed channel steel and are locked; A transverse supporting steel pipe connected to the steel box beam is arranged at the bottom of the double-jointed channel steel. The double-jointed channel steel and the transverse supporting steel pipe are locked by installing vertically arranged screws. A steel pipe support beam resting on the screw is arranged on the top of the double-jointed channel steel. Nuts and gaskets are installed on the screws to lock the steel pipe support beam to the top of the double-jointed channel steel.
2. The steel-concrete composite bridge suspension formwork according to claim 1 is characterized in that: The longitudinal supporting steel pipe and the steel box beam at the bottom of the U-bolt are provided with corresponding shear nails.
3. The steel-concrete composite bridge suspension formwork according to claim 1 is characterized in that: A square wood template is laid on the supporting steel pipe.