CN214939289U - Steel case-concrete combination beam decking formwork system - Google Patents
Steel case-concrete combination beam decking formwork system Download PDFInfo
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- CN214939289U CN214939289U CN202120030471.2U CN202120030471U CN214939289U CN 214939289 U CN214939289 U CN 214939289U CN 202120030471 U CN202120030471 U CN 202120030471U CN 214939289 U CN214939289 U CN 214939289U
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Abstract
The utility model discloses a steel case-concrete composite beam decking formwork system and construction method, the formwork system includes steel case beam bottom plate, steel case beam bottom plate top surface is connected with vertical steel case beam side web, the middle web of steel case beam, there is the steel case beam roof at web top in the middle of every steel case beam side web, the steel case beam, the adjustable A-frame flange slab that encorbelments of steel case beam side web of both sides system of watering, install the flexible harmless clamping in cast-in-place decking bottom between the middle web of steel case beam and the steel case beam side web and prop up the die support system. The utility model discloses effectively solved the problem of complexity, the security of steel case-concrete combination beam decking formwork, better improvement efficiency of construction is applied to and can be obtained better technical and economic benefits in the actual engineering.
Description
Technical Field
The utility model relates to a bridge engineering field specifically is a steel case-concrete composite beam decking formwork system.
Background
The steel-concrete composite structure bridge (called a composite beam for short) is a bridge structure form which connects a steel beam and a concrete bridge deck into a whole through a shear connector and considers common stress. Compared with a pure steel bridge which is not designed according to a combined structure, the combined beam can effectively reduce the structure height, improve the structure rigidity and reduce the deflection of the structure under live load. Through the connection effect of the shear connectors, the concrete bridge deck plate has a restraint effect on the compression flange of the steel beam, so that the stability of the steel beam is enhanced, and the material strength is fully exerted. The reduction of the height of the cross section makes the structure appearance more delicate, improves the landscape effect of the bridge, and is beneficial to increasing the clearance under the bridge or reducing the elevation of the bridge deck. Compared with a concrete bridge, the combined beam bridge has the advantages that the height of the upper structure is reduced, the self weight is reduced, the earthquake action is reduced, the ductility of the structure is improved, the construction cost is reduced, the steel structure is prefabricated by a factory, the construction site is clean and safe, and steel can be partially recycled, so that the combined beam bridge is beneficial to maintenance and environmental protection. Meanwhile, the composite beam is convenient for industrial production, high in field installation quality, low in construction cost and high in construction speed, is suitable for being used in urban and expressway overpasses with heavy traffic, has been widely applied in developed countries such as Europe and America, and has gained more and more attention and application in recent years along with the development of national economy and the maturity of technical level although the initiation of China is late.
The steel box-concrete composite beam bridge deck is divided into two manufacturing modes, one is prefabrication and assembly, namely the bridge deck is prefabricated and finished in a prefabrication field according to a construction drawing and is transported to a field to be hoisted and assembled; and secondly, casting in situ, namely erecting a support on a construction site, installing a template and casting concrete in situ. The cast-in-place mainly adopts full hall formula support and beam column type support, no matter full hall formula support or beam column type support all will occupy space under the bridge site, can reduce the operation efficiency when striding existing line steel case-concrete composite beam cast-in-place decking construction, have great potential safety hazard, and it is big to the operation influence of striding busy highway section. Aiming at the problems existing in the construction of the steel box-concrete composite beam cast-in-place bridge deck slab, in order to eliminate potential safety hazards and improve work efficiency and controllability, the construction method of the steel box-concrete composite beam bridge deck slab formwork system is an effective measure for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel case-concrete combination roof beam decking formwork system that props up to the problem that exists in the construction of steel case-concrete combination roof beam decking formwork system.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a steel case-concrete combination beam decking formwork system for construct cast-in-place decking (37), its characterized in that: the steel box girder comprises a steel box girder bottom plate (1), a plurality of bottom plate stiffening ribs (2) are fixed on the steel box girder bottom plate (1), vertical steel box girder side webs (3) are respectively connected to the two transverse sides of the top surface of the steel box girder bottom plate (1), a vertical steel box girder middle web is connected between the steel box girder side webs (3) on the two sides of the top surface of the steel box girder bottom plate (1), a plurality of side web longitudinal stiffening ribs (4) are fixed in each steel box girder side web (3), each side web longitudinal stiffening rib (4) is distributed along the vertical direction, the top of each steel box girder side web (3) and the top of the steel box girder middle web are respectively connected with a horizontal steel box girder top plate (6), vertical studs (7) are respectively welded at the top of each steel box girder top plate (6), first bolt holes (9) are respectively reserved in the steel box girder top plates (6) at the tops of the steel box girder side webs (3) on the two sides, the steel box girder top plates (6) at the tops of the steel box girder side webs (3) at the two sides are respectively fixed with an embedded steel pipe (8) at a position corresponding to the first bolt hole (9), and the lower ends of the embedded steel pipes (8) are communicated with the corresponding first bolt holes (9);
the adjustable triangular support overhanging flange plate overhanging system and the flexible lossless clamping and fixing of the bottom of the cast-in-place bridge deck plate support the bottom supporting die, wherein:
the adjustable triangular support overhanging flange plate overhanging casting system is arranged on steel box girder side web plates (3) at two sides, the adjustable triangular support overhanging flange plate overhanging casting system at each side respectively comprises a triangular support and an overhanging flange plate template adjusting structure, one vertical edge of the triangular support is connected with the corresponding side steel box girder side web plate (3), the overhanging flange plate template adjusting structure comprises a rotatable support (17), a first supporting plate (23), a first square timber (24) and a first plywood (25), the rotatable support (17) is arranged on the horizontal edge of the triangular support, the bottom of one transverse side of the first supporting plate (23) is connected with the rotatable support (17), the bottom of the first supporting plate (23) is vertically connected with a plurality of first adjustable jacking supports (22), and each first adjustable jacking support (22) is respectively connected with a middle cross beam (21) of the triangular support, the first adjustable jacking support (22) is adjusted to adjust the first supporting plate (23), the first square timber (24) is laid on the top surface of the first supporting plate (23), the first plywood (25) is laid on the top surface of the first square timber (24), and a fixing plate (27) is fixed on the top of the first plywood (25) close to the outer side edge, so that an overhanging flange plate template adjusting structure is formed;
the flexible lossless clamping bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck is arranged between a middle web plate and a side web plate (3) of the steel box girder, the flexible lossless clamping bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck comprises a second supporting plate (34), a second square timber (35), a second plywood (36) and a plurality of vertical supporting rods (40), the lower end of each supporting rod (40) is connected with the bottom plate (1) of the steel box girder through a second adjustable bottom support (39), the second supporting plate (34) is arranged above each supporting rod (40), the upper end of each supporting rod (40) is connected with the bottom surface of the second supporting plate (34) through a second adjustable top support (38), the height of the second supporting plate (34) is adjusted by adjusting a second adjustable jacking (38) and a second adjustable bottom support (39), a second square wood (35) is laid on the top surface of the second supporting plate (34), and a second plywood (36) is laid on the top surface of the second square wood (35);
and after steel bars are bound on the top plate (6) of each steel box girder, the first plywood (25) and the second plywood (36), pouring to form the cast-in-situ bridge deck (37).
The steel box-concrete composite beam bridge deck formwork system is characterized in that: the triangular support comprises a first adjustable bottom support (28), a first support (16), a second support (19) and a cross beam (21), one end of the first adjustable bottom support (28) is connected to the outer side face of the side web plate (3) of the steel box girder at the corresponding side, the first support (16) is vertically arranged outside the side web plate (3) of the steel box girder at the corresponding side as the vertical edge of the triangular support, the lower end of the first support (16) is connected to the top of the first adjustable bottom support (28), and the upper end of the first support (16) is connected to the bottom face of the top plate (6) of the steel box girder at the top of the side web plate (3) of the steel box girder at the corresponding side; the second support (19) is inclined, and the inclined lower end of the second support (19) is connected to the top of the first adjustable bottom support (28); the horizontal side of the beam (21) as a triangular support is horizontal, one transverse end of the beam (21) is connected to the outer side surface of the first support (16), the inclined upper end of the second support (19) is connected to the bottom surface of the beam (21), a diagonal brace (18) is connected between the joint of the beam (21) and the first support (16) and the second support (19), and a plurality of longitudinal reinforcing connecting rods (20) are fixed at the top of the beam (21); thereby forming a triangular bracket; the rotatable support (17) is arranged on the top surface of a cross beam (21) in the triangular support and abuts against the first support (16).
The steel box-concrete composite beam bridge deck formwork system is characterized in that: in the triangular support, one end of a first adjustable bottom support (28) facing a side web plate (3) of the steel box girder at the corresponding side is connected with an ear plate, a second bolt hole (29) is formed in the position, corresponding to the ear plate, of the side web plate (3) of the steel box girder, and the ear plate connected with one end of the first adjustable bottom support (28) is connected to the outer side face of the side web plate (3) of the steel box girder at the corresponding side through a second bolt (30), so that a connecting structure of the triangular support and the side web plate of the steel box girder is formed;
and the second bolt (30) comprises a second screw (31) penetrating through the lug plate and the second bolt hole (29), second nuts (33) are respectively screwed at two ends of the second screw (31), and gaskets (32) sleeved with the second screws (31) are respectively arranged between the lug plate and the corresponding second nuts and between the position of the steel box girder side web plate (3) where the second bolt hole (29) is located and the corresponding second nuts.
The steel box-concrete composite beam bridge deck formwork system is characterized in that: in the triangular support, a connecting block is formed at the upper end of a first support (16) inwards, a third gasket (14) is arranged between the connecting block and a top plate (6) of a steel box beam on the corresponding side, a third bolt hole (15) in the connecting block is communicated with a first bolt hole (9) of the top plate (6) of the steel box beam on the corresponding side, and the connecting block is connected to the bottom surface of the top plate (6) of the steel box beam on the corresponding side through a first bolt (10) which penetrates through the third bolt hole (15), the third gasket (14) and the first bolt hole (9) in a screwed mode, so that a connecting structure of the triangular support and the top plate of the steel box beam is formed;
first bolt (10) include first screw rod (13), and third bolt hole (15), third gasket (14), first bolt hole (9) are passed in first screw rod (13) spiro union, and inside first screw rod (13) upper end penetrated to pre-buried steel pipe (8) lower extreme, and first screw rod (13) upper and lower extreme has screwed first nut (12) respectively, is equipped with respectively between connecting block and the first nut that corresponds, between steel case roof beam roof (6) and the first nut that corresponds and overlaps in first screw rod (13) first gasket (11).
The steel box-concrete composite beam bridge deck formwork system is characterized in that: in the overhanging flange plate template adjusting structure, the top of the first supporting plate (23) is connected with a vertical edge protection (26) close to the other transverse side.
The steel box-concrete composite beam bridge deck formwork system is characterized in that: in the flexible lossless clamping pair bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck, each pair of supporting rods (40) are additionally provided with a transverse connecting rod (41) and a longitudinal connecting rod (42) for reinforced connection.
Compared with the prior art, the utility model has the advantages that:
(1) the utility model discloses cast-in-place decking bottom adopts harmless clamping to propping end mould support system, through set up adjustable top support and collet respectively from top to bottom to the vaulting pole, realizes the decking and the supporting of steel case roof beam bottom plate, has effectively guaranteed the die-filling quality of decking die block.
(2) The utility model discloses falling to the ground the support with the tradition and converting into the edge of a wing board of encorbelmenting, having avoided tradition full hall support and beam column type support to occupy the shortcoming of headroom under the bridge, reduce support steel use amount, practice thrift the cost.
(3) The utility model discloses A-frame with adjustable accomplishes in field processing, is assembling the field and is connected with the steel case roof beam, erects along with the steel case roof beam and takes one's place, reduces the field support and sets up the procedure for the construction progress.
(4) The utility model discloses A-frame adopts the bolt to be connected with the steel case roof beam with adjustable, can dismantle used repeatedly, has effectively reduced the material use amount.
(5) The utility model discloses but A-frame with adjustable realizes overhanging the quick accurate positioning formwork of flange board through adjustable top support and layer board connection rotatable support, has improved a formwork efficiency of construction.
Drawings
FIG. 1 is a schematic view of a steel box-concrete composite beam bridge deck formwork system;
FIG. 2 is a schematic structural diagram of a bridge deck of a steel box-concrete composite beam;
FIG. 3 is a detailed view of the connection structure of the adjustable triangular support and the steel box girder top plate;
FIG. 4 is a detailed view of the connection structure of the adjustable triangular support and the side web of the steel box girder.
The labels in the figure are: 1-steel box girder bottom plate, 2-bottom plate stiffening rib, 3-steel box girder side web plate, 4-side web plate longitudinal stiffening rib, 5-side web plate transverse stiffening rib, 6-steel box girder top plate, 7-stud, 8-embedded steel pipe, 9-first bolt hole, 10-first bolt, 11-first gasket, 12-first nut, 13-first screw, 14-third gasket, 15-third bolt hole, 16-first support, 17-rotatable support, 18-diagonal reinforcement, 19-second support, 20-longitudinal reinforcing connecting rod, 21-cross beam, 22-adjustable jacking, 23-first supporting plate, 24-first square beam, 25-first plywood, 26-edge protection, 27-side form fixing, 28-adjustable bottom support I, 29-second bolt hole, 30-second bolt, 31-second screw, 32-second gasket, 33-second nut, 34-second supporting plate, 35-second square wood, 36-second plywood, 37-cast-in-place bridge deck, 38-second adjustable top support, 39-second adjustable bottom support, 40-pair supporting rod, 41-transverse connecting rod and 42-longitudinal connecting rod.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and 2, a steel box-concrete composite beam bridge deck formwork system for constructing a cast-in-place bridge deck 37 comprises a steel box beam bottom plate 1, wherein two horizontal sides of the top surface of the steel box beam bottom plate 1 are respectively connected with vertical steel box beam side webs 3, a vertical steel box beam middle web is connected between the steel box beam side webs 3 positioned at two sides of the top surface of the steel box beam bottom plate 1, each steel box beam side web 3, the top of the middle web plate of the steel box girder is respectively connected with horizontal steel box girder top plates 6, the top of each steel box girder top plate 6 is respectively welded with a vertical stud 7, the steel box girder top plates 6 at the top of the steel box girder side web plates 3 at two sides are respectively reserved with first bolt holes 9, the steel box girder top plates 6 at the top of the steel box girder side web plates 3 at two sides are respectively fixed with embedded steel pipes 8 corresponding to the first bolt holes 9, and the lower ends of the embedded steel pipes 8 are communicated with the corresponding first bolt holes 9;
the adjustable triangular support overhanging flange plate overhanging system and the flexible lossless clamping and fixing of the bottom of the cast-in-place bridge deck plate support the bottom supporting die, wherein:
the adjustable triangular support overhanging flange plate overhanging system is arranged on the steel box girder side webs 3 at two sides, and the adjustable triangular support overhanging flange plate overhanging system at each side respectively comprises a triangular support and an overhanging flange plate template adjusting structure;
the triangular support comprises a first adjustable bottom support 28, a first support 16, a second support 19 and a cross beam 21, one end of the first adjustable bottom support 28 is connected to the outer side surface of the side web plate 3 of the steel box girder at the corresponding side, the first support 16 is vertically arranged outside the side web plate 3 of the steel box girder at the corresponding side, the lower end of the first support 16 is connected to the top of the first adjustable bottom support 28, and the upper end of the first support 16 is connected to the bottom surface of the top plate 6 of the steel box girder at the top of the side web plate 3 of the steel box girder at the corresponding side; the second support 19 is inclined, and the inclined lower end of the second support 19 is connected to the top of the first adjustable bottom support 28; the cross beam 21 is horizontal, one transverse end of the cross beam 21 is connected to the outer side face of the first support 16, and the inclined upper end of the second support 19 is connected to the bottom face of the cross beam 21, so that a triangular support is formed;
the overhanging flange plate template adjusting structure comprises a rotatable support 17, a first supporting plate 23, a first square timber 24 and a first plywood 25, wherein the rotatable support 17 is installed on the top surface of a middle cross beam 21 of a triangular support and is abutted against a first support 16, the bottom of one transverse side of the first supporting plate 23 is connected to the rotatable support 17, the bottom of the first supporting plate 23 is vertically connected with a plurality of first adjustable jacking supports 22, each first adjustable jacking support 22 is respectively connected with the middle cross beam 21 of the triangular support, the first supporting plate 23 is adjusted by adjusting the first adjustable jacking supports 22, the first square timber 24 is laid on the top surface of the first supporting plate 23, the first plywood 25 is laid on the top surface of the first square timber 24, and a fixing plate 27 is fixed at the position, close to the outer side edge, of the top of the first plywood 25, so that the overhanging flange plate template adjusting structure is formed;
the flexible lossless clamping bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck is arranged between a middle web plate and a side web plate 3 of the steel box girder, and comprises a second supporting plate 34, a second square timber 35, a second plywood 36 and a plurality of vertical supporting rods 40, wherein the lower end of each supporting rod 40 is connected with the bottom plate 1 of the steel box girder through a second adjustable bottom support 39, the second supporting plate 34 is arranged above each supporting rod 40, the upper end of each supporting rod 40 is connected with the bottom surface of the second supporting plate 34 through a second adjustable top support 38, the height of the second supporting plate 34 is adjusted through adjusting the second adjustable top support 38 and the second adjustable bottom support 39, the second square timber 35 is laid on the top surface of the second supporting plate 34, and the second plywood 36 is laid on the top surface of the second square timber 35;
and binding steel bars on the top plate 6 of each steel box girder, the first plywood 25 and the second plywood 36, and pouring to form the cast-in-situ bridge deck 37.
The utility model discloses in, be fixed with a plurality of bottom plate stiffening ribs 2 on the steel case roof beam bottom plate 1.
The utility model discloses in, be fixed with a plurality of side web vertical stiffening rib 4 in the steel case roof beam side web 3, each side web vertical stiffening rib 4 distributes along vertical direction.
In the triangular bracket of the utility model, one end of the first adjustable collet 28 facing the side web plate 3 of the steel box girder at the corresponding side is connected with an ear plate, the position of the side web plate 3 of the steel box girder corresponding to the ear plate is formed with a second bolt hole 29, the ear plate connected with one end of the first adjustable collet 28 is connected with the outer side surface of the side web plate 3 of the steel box girder at the corresponding side through a second bolt 30, thereby forming a connecting structure of the triangular bracket and the side web plate of the steel box girder;
as shown in fig. 4, the second bolt 30 includes a second screw 31 passing through the lug plate and the second bolt hole 29, a second nut 33 is screwed to each end of the second screw 31, and a washer 32 fitted to the second screw 31 is provided between the lug plate and the corresponding second nut, and between the position of the steel box girder side web 3 where the second bolt hole 29 is located and the corresponding second nut.
In the triangular support, a diagonal brace 18 is connected between the joint of the cross beam 21 and the first support 16 and the second support 19; a plurality of longitudinal reinforcing connecting rods 20 are fixed to the top of the cross beam 21.
In the triangular support, the upper end of a first support 16 is formed with a connecting block towards the inner side, a third gasket 14 is arranged between the connecting block and the steel box girder top plate 6 at the corresponding side, a third bolt hole 15 is arranged in the connecting block and is communicated with a first bolt hole 9 of the steel box girder top plate 6 at the corresponding side, and the connecting block is connected to the bottom surface of the steel box girder top plate 6 at the corresponding side through a first bolt 10 which penetrates through the third bolt hole 15, the third gasket 14 and the first bolt hole 9 in a screwed manner, so that a connecting structure of the triangular support and the steel box girder top plate is formed;
as shown in fig. 3, the first bolt 10 includes a first screw 13, the first screw 13 is screwed through the third bolt hole 15, the third gasket 14 and the first bolt hole 9, the upper end of the first screw 13 penetrates into the lower end of the embedded steel pipe 8, the upper end and the lower end of the first screw 13 are respectively screwed with a first nut 12, and a first gasket 11 sleeved on the first screw 13 is respectively arranged between the connecting block and the corresponding first nut and between the steel box girder top plate 6 and the corresponding first nut.
The utility model discloses among the structure is adjusted to the flange template of encorbelmenting, first layer board 23 top is close to horizontal opposite side position and is connected with vertical edge protection 26 that faces.
The utility model discloses flexible harmless clamping in cast-in-place decking bottom is to propping in the end mould support system, and each adds to vaulting pole 40 and establishes transverse connection pole 41, longitudinal tie rod 42 reinforced connection.
The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not right the present invention is designed and limited, without departing from the design concept of the present invention, the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention, and the technical contents of the present invention are all recorded in the claims.
Claims (6)
1. The utility model provides a steel case-concrete combination beam decking formwork system for construct cast-in-place decking (37), its characterized in that: the steel box girder comprises a steel box girder bottom plate (1), a plurality of bottom plate stiffening ribs (2) are fixed on the steel box girder bottom plate (1), vertical steel box girder side webs (3) are respectively connected to the two transverse sides of the top surface of the steel box girder bottom plate (1), a vertical steel box girder middle web is connected between the steel box girder side webs (3) on the two sides of the top surface of the steel box girder bottom plate (1), a plurality of side web longitudinal stiffening ribs (4) are fixed in each steel box girder side web (3), each side web longitudinal stiffening rib (4) is distributed along the vertical direction, the top of each steel box girder side web (3) and the top of the steel box girder middle web are respectively connected with a horizontal steel box girder top plate (6), vertical studs (7) are respectively welded at the top of each steel box girder top plate (6), first bolt holes (9) are respectively reserved in the steel box girder top plates (6) at the tops of the steel box girder side webs (3) on the two sides, the steel box girder top plates (6) at the tops of the steel box girder side webs (3) at the two sides are respectively fixed with an embedded steel pipe (8) at a position corresponding to the first bolt hole (9), and the lower ends of the embedded steel pipes (8) are communicated with the corresponding first bolt holes (9);
the adjustable triangular support overhanging flange plate overhanging system and the flexible lossless clamping and fixing of the bottom of the cast-in-place bridge deck plate support the bottom supporting die, wherein:
the adjustable triangular support overhanging flange plate overhanging casting system is arranged on steel box girder side web plates (3) at two sides, the adjustable triangular support overhanging flange plate overhanging casting system at each side respectively comprises a triangular support and an overhanging flange plate template adjusting structure, one vertical edge of the triangular support is connected with the corresponding side steel box girder side web plate (3), the overhanging flange plate template adjusting structure comprises a rotatable support (17), a first supporting plate (23), a first square timber (24) and a first plywood (25), the rotatable support (17) is arranged on the horizontal edge of the triangular support, the bottom of one transverse side of the first supporting plate (23) is connected with the rotatable support (17), the bottom of the first supporting plate (23) is vertically connected with a plurality of first adjustable jacking supports (22), and each first adjustable jacking support (22) is respectively connected with a middle cross beam (21) of the triangular support, the first adjustable jacking support (22) is adjusted to adjust the first supporting plate (23), the first square timber (24) is laid on the top surface of the first supporting plate (23), the first plywood (25) is laid on the top surface of the first square timber (24), and a fixing plate (27) is fixed on the top of the first plywood (25) close to the outer side edge, so that an overhanging flange plate template adjusting structure is formed;
the flexible lossless clamping bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck is arranged between a middle web plate and a side web plate (3) of the steel box girder, the flexible lossless clamping bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck comprises a second supporting plate (34), a second square timber (35), a second plywood (36) and a plurality of vertical supporting rods (40), the lower end of each supporting rod (40) is connected with the bottom plate (1) of the steel box girder through a second adjustable bottom support (39), the second supporting plate (34) is arranged above each supporting rod (40), the upper end of each supporting rod (40) is connected with the bottom surface of the second supporting plate (34) through a second adjustable top support (38), the height of the second supporting plate (34) is adjusted by adjusting a second adjustable jacking (38) and a second adjustable bottom support (39), a second square wood (35) is laid on the top surface of the second supporting plate (34), and a second plywood (36) is laid on the top surface of the second square wood (35);
and after steel bars are bound on the top plate (6) of each steel box girder, the first plywood (25) and the second plywood (36), pouring to form the cast-in-situ bridge deck (37).
2. The steel box-concrete composite beam bridge deck formwork system according to claim 1, wherein: the triangular support comprises a first adjustable bottom support (28), a first support (16), a second support (19) and a cross beam (21), one end of the first adjustable bottom support (28) is connected to the outer side face of the side web plate (3) of the steel box girder at the corresponding side, the first support (16) is vertically arranged outside the side web plate (3) of the steel box girder at the corresponding side as the vertical edge of the triangular support, the lower end of the first support (16) is connected to the top of the first adjustable bottom support (28), and the upper end of the first support (16) is connected to the bottom face of the top plate (6) of the steel box girder at the top of the side web plate (3) of the steel box girder at the corresponding side; the second support (19) is inclined, and the inclined lower end of the second support (19) is connected to the top of the first adjustable bottom support (28); the horizontal side of the beam (21) as a triangular support is horizontal, one transverse end of the beam (21) is connected to the outer side surface of the first support (16), the inclined upper end of the second support (19) is connected to the bottom surface of the beam (21), a diagonal brace (18) is connected between the joint of the beam (21) and the first support (16) and the second support (19), and a plurality of longitudinal reinforcing connecting rods (20) are fixed at the top of the beam (21); thereby forming a triangular bracket; the rotatable support (17) is arranged on the top surface of a cross beam (21) in the triangular support and abuts against the first support (16).
3. The steel box-concrete composite beam bridge deck formwork system according to claim 2, wherein: in the triangular support, one end of a first adjustable bottom support (28) facing a side web plate (3) of the steel box girder at the corresponding side is connected with an ear plate, a second bolt hole (29) is formed in the position, corresponding to the ear plate, of the side web plate (3) of the steel box girder, and the ear plate connected with one end of the first adjustable bottom support (28) is connected to the outer side face of the side web plate (3) of the steel box girder at the corresponding side through a second bolt (30), so that a connecting structure of the triangular support and the side web plate of the steel box girder is formed;
and the second bolt (30) comprises a second screw (31) penetrating through the lug plate and the second bolt hole (29), second nuts (33) are respectively screwed at two ends of the second screw (31), and gaskets (32) sleeved with the second screws (31) are respectively arranged between the lug plate and the corresponding second nuts and between the position of the steel box girder side web plate (3) where the second bolt hole (29) is located and the corresponding second nuts.
4. The steel box-concrete composite beam bridge deck formwork system according to claim 2, wherein: in the triangular support, a connecting block is formed at the upper end of a first support (16) inwards, a third gasket (14) is arranged between the connecting block and a top plate (6) of a steel box beam on the corresponding side, a third bolt hole (15) in the connecting block is communicated with a first bolt hole (9) of the top plate (6) of the steel box beam on the corresponding side, and the connecting block is connected to the bottom surface of the top plate (6) of the steel box beam on the corresponding side through a first bolt (10) which penetrates through the third bolt hole (15), the third gasket (14) and the first bolt hole (9) in a screwed mode, so that a connecting structure of the triangular support and the top plate of the steel box beam is formed;
first bolt (10) include first screw rod (13), and third bolt hole (15), third gasket (14), first bolt hole (9) are passed in first screw rod (13) spiro union, and inside first screw rod (13) upper end penetrated to pre-buried steel pipe (8) lower extreme, and first screw rod (13) upper and lower extreme has screwed first nut (12) respectively, is equipped with respectively between connecting block and the first nut that corresponds, between steel case roof beam roof (6) and the first nut that corresponds and overlaps in first screw rod (13) first gasket (11).
5. The steel box-concrete composite beam bridge deck formwork system according to claim 1, wherein: in the overhanging flange plate template adjusting structure, the top of the first supporting plate (23) is connected with a vertical edge protection (26) close to the other transverse side.
6. The steel box-concrete composite beam bridge deck formwork system according to claim 1, wherein: in the flexible nondestructive clamping pair bottom-supporting mold supporting system at the bottom of the cast-in-place bridge deck plate, each pair of supporting rods (40) is additionally provided with a transverse connecting rod (41) and a longitudinal connecting rod (42) for reinforcing connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030471.2U CN214939289U (en) | 2021-01-07 | 2021-01-07 | Steel case-concrete combination beam decking formwork system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030471.2U CN214939289U (en) | 2021-01-07 | 2021-01-07 | Steel case-concrete combination beam decking formwork system |
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| CN214939289U true CN214939289U (en) | 2021-11-30 |
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