Steel box concrete composite beam bridge deck slab formwork

Abstract

The utility model relates to the technical field of beam bridge deck slab auxiliary connection, and discloses a steel box concrete composite beam bridge deck slab formwork which comprises a first I-shaped steel beam, and a second I-shaped steel beam is arranged on the side edge of the first I-shaped steel beam. The bottom of the first beam bridge deck slab and the bottom of the second beam bridge deck slab are both connected with the first I-shaped steel beam and the second I-shaped steel beam through arranged deck slab auxiliary formwork erecting assemblies, and the bottom of the first beam bridge deck slab and the bottom of the second beam bridge deck slab are both connected with the first I-shaped steel beam and the second I-shaped steel beam through arranged deck slab auxiliary formwork erecting assemblies. The end parts of the steel beam connecting rods are respectively fixed on the side edges of the first I-shaped steel beam and the second I-shaped steel beam through fixing screw rods, so that the connecting strength between the first beam bridge deck slab and the first I-shaped steel beam and between the second beam bridge deck slab and the second I-shaped steel beam is further enhanced, and the gap between the beam bridge deck slabs can be effectively prevented from being gradually enlarged; and the combination safety and stability between the first beam bridge deck slab and the second beam bridge deck slab are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary connection of beam bridge decks, and specifically relates to a formwork support for a steel box concrete composite beam bridge deck. Background Technique

[0002] A composite bridge refers to a composite structure bridge with a beam bridge span as the basic structure. After two or more systems overlap, the reaction force nature of the overall structure is still the same as that of a beam loaded by bending. The characteristics of this type of bridge are mainly reflected in the heavy design calculation work, complex structural details and internal forces. The use of a continuous composite beam bridge with studded precast slabs can significantly reduce the secondary internal forces of the structure and the tensile stress of concrete caused by the shrinkage and creep effect of concrete.

[0003] After retrieval, the authorized Chinese patent publication number CN 215857300 U discloses a reinforcement structure for an I-shaped composite beam bridge deck, including a top steel plate, a transverse support steel, an inclined support steel and a transverse connection steel; the top steel plate is connected to the lower surface of the bridge deck, the transverse support steel is connected to the lower surface of the top steel plate, the inclined support steel is obliquely arranged between the transverse support steel and the bridge main beam, and the transverse connection steel is arranged between the bridge main beams in the transverse direction. By setting a top steel plate and a transverse support steel under the bridge deck, the utility model can reinforce the bridge deck without affecting the normal operation of the traffic on the bridge, and by adding an inclined support beam between the transverse support steel and the bridge main beam, the existing structure of the bridge is utilized to complete the reinforcement of the bridge deck, improving the overall safety of the bridge.

[0004] There are still certain deficiencies in the formwork support for the composite beam bridge deck in the above patent. Since the beam bridge deck directly bears the vehicle wheel pressure in the bridge structure system, the stress condition of the beam bridge deck structure is complex and the failure forms are diverse. The existing formwork support for the steel box concrete composite beam bridge deck often uses a beam-column type support to support each bridge deck, but the tight connection between each group of beam bridge decks is poor. When the beam bridge deck undergoes lateral displacement, it is difficult for the bottom support frame to fix it, which easily causes the gap between the beam bridge decks to gradually increase, posing a greater potential safety hazard in use. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a formwork support for a steel box concrete composite beam bridge deck, which solves the problem that the existing formwork support for the steel box concrete composite beam bridge deck often uses a beam-column type support to support each bridge deck, but the tight connection between each group of beam bridge decks is poor. When the beam bridge deck undergoes lateral displacement, it is difficult for the bottom support frame to fix it, which easily causes the gap between the beam bridge decks to gradually increase, posing a greater potential safety hazard in use.

[0006] The utility model provides the following technical solution: a formwork support for the steel box concrete composite girder bridge deck, including a first I-shaped steel beam, a second I-shaped steel beam is arranged on the side of the first I-shaped steel beam, a first bridge deck and a second bridge deck are arranged on the tops of the first I-shaped steel beam and the second I-shaped steel beam, and the bottoms of the first bridge deck and the second bridge deck are connected to the first I-shaped steel beam and the second I-shaped steel beam through panel auxiliary formwork support components arranged;

[0007] The panel auxiliary formwork support component includes two groups of first fixed connection blocks fixedly arranged on both sides of the bottom end of the second bridge deck, second fixed connection blocks are arranged on the sides of the first fixed connection blocks, the second fixed connection blocks are all connected to the first bridge deck, two connection screws are inserted through the first fixed connection blocks and the second fixed connection blocks, fixed nuts are sleeved on the ends of the connection screws, bottom mounting frames are arranged at the bottoms of the first fixed connection blocks and the second fixed connection blocks, steel beam connecting rods are arranged in the bottom mounting frames, the ends of the steel beam connecting rods are rotationally connected to the bottom mounting frames through inserted rotating shafts, two side mounting frames are symmetrically arranged on the sides of the first I-shaped steel beam and the second I-shaped steel beam, the bottom ends of the steel beam connecting rods are inserted into the side mounting frames, and the bottom ends of the steel beam connecting rods and the side mounting frames are connected through inserted fixed screws, and fastening nuts are sleeved on the ends of the fixed screws. A number of connection through holes are evenly opened on the sides of the tops of the first I-shaped steel beam and the second I-shaped steel beam.

[0008] Preferred technical solution one: A number of inner wall connection blocks are evenly arranged on the sides of the second I-shaped steel beam and the first I-shaped steel beam, limit screw holes are opened on the inner wall connection blocks, and limit screws are inserted into the limit screw holes.

[0009] Preferred technical solution two: A number of anti-displacement slots are symmetrically opened on both sides of the bottoms of the first bridge deck and the second bridge deck, and the ends of the limit screws all extend into the anti-displacement slots.

[0010] Preferred technical solution three: The first fixed connection blocks and the second fixed connection blocks are both located on the sides close to the bottom ends of the first bridge deck and the second bridge deck.

[0011] This solution can enable the sides of two adjacent first bridge decks and second bridge decks to be fixedly connected by the connection screws and fixed nuts inserted into the first fixed connection blocks and the second fixed connection blocks.

[0012] Preferred technical solution four: The connection through holes and the limit screw holes are on the same vertical line.

[0013] This solution enables the user to more conveniently insert the limiting screw into the connection through-hole.

[0014] Preferred Technical Solution Five: A connection block facilitating rotation is provided at the end of the limiting screw.

[0015] This solution enables the user to more conveniently rotate the limiting screw.

[0016] Compared with the prior art, the present utility model provides a formwork for a steel box concrete composite girder bridge deck, having the following beneficial effects:

[0017] (1) In the present utility model, a panel auxiliary formwork assembly is provided at the bottom of the first bridge deck panel and the second bridge deck panel. The first fixed connection block and the second fixed connection block in the panel auxiliary formwork assembly are respectively arranged on both sides of the bottom ends of the first bridge deck panel and the second bridge deck panel. The user can fix and connect the approaching parts of the first bridge deck panel and the second bridge deck panel by inserting connection screws into the first fixed connection block and the second fixed connection block, thereby avoiding the situation that a single first bridge deck panel or second bridge deck panel is prone to deviation. The bottom ends of the first fixed connection block and the second fixed connection block are rotatably provided with steel beam connecting rods, and the ends of the steel beam connecting rods are respectively fixed to the sides of the first I-shaped steel beam and the second I-shaped steel beam through fixing screws, further strengthening the connection strength between the first bridge deck panel and the second bridge deck panel and the first I-shaped steel beam and the second I-shaped steel beam, effectively preventing the gap between the bridge deck panels from gradually increasing, and ensuring the combined safety and stability between the first bridge deck panel and the second bridge deck panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is of the present utility model Figure 1 structural schematic diagram of the panel auxiliary formwork assembly therein;

[0020] Figure 3 is of the present utility model Figure 2 structural enlarged view of the connection through-hole therein;

[0021] Figure 4 is of the present utility model Figure 1 structural back schematic diagram of the first bridge deck panel therein.

[0022] In the figure: 1, first I-shaped steel beam; 2, second I-shaped steel beam; 3, first bridge deck panel; 4, second bridge deck panel; 5, panel auxiliary formwork assembly;

[0023] 501. First fixed connection block; 502. Second fixed connection block; 503. Connecting screw rod; 504. Fixed nut; 505. Bottom mounting bracket; 506. Steel beam connecting rod; 507. Rotating insertion shaft; 508. Side mounting bracket; 509. Fixed screw rod; 510. Tightening nut; 511. Connecting perforation; 512. Inner wall connecting block; 513. Limit screw hole; 514. Limit screw rod; 515. Anti-displacement slot. Detailed implementation mode

[0024] Please refer to Figures 1-4 ,

[0025] Embodiment 1: A formwork support for the steel box concrete composite girder bridge deck, including the first I-shaped steel beam 1, the second I-shaped steel beam 2 is arranged on the side of the first I-shaped steel beam 1, the first beam bridge deck 3 and the second beam bridge deck 4 are arranged on the tops of the first I-shaped steel beam 1 and the second I-shaped steel beam 2 respectively, and the bottoms of the first beam bridge deck 3 and the second beam bridge deck 4 are connected to the first I-shaped steel beam 1 and the second I-shaped steel beam 2 through the arranged panel auxiliary formwork support assembly 5.

[0026] The panel auxiliary formwork support assembly 5 includes two groups of first fixed connection blocks 501 fixedly arranged on both sides of the bottom end of the second beam bridge deck 4, the second fixed connection blocks 502 are arranged on the sides of the first fixed connection blocks 501, the second fixed connection blocks 502 are all connected to the first beam bridge deck 3, two connecting screw rods 503 are inserted through the first fixed connection blocks 501 and the second fixed connection blocks 502, the end of the connecting screw rod 503 is sleeved with a fixed nut 504, the bottoms of the first fixed connection blocks 501 and the second fixed connection blocks 502 are both provided with bottom mounting brackets 505, and a steel beam connecting rod 506 is arranged in the bottom mounting bracket 505.

[0027] The end of the steel beam connecting rod 506 is rotatably connected to the bottom mounting bracket 505 through the inserted rotating insertion shaft 507, two side mounting brackets 508 are symmetrically arranged on the sides of the first I-shaped steel beam 1 and the second I-shaped steel beam 2, the bottom ends of the steel beam connecting rods 506 are inserted into the side mounting brackets 508, and the bottom ends of the steel beam connecting rods 506 and the side mounting brackets 508 are connected through the inserted fixed screw rod 509, and the end of the fixed screw rod 509 is sleeved with a tightening nut 510.

[0028] A number of connecting perforations 511 are evenly opened on the sides of the tops of the first I-shaped steel beam 1 and the second I-shaped steel beam 2, a number of inner wall connecting blocks 512 are evenly arranged on the sides of the second I-shaped steel beam 2 and the first I-shaped steel beam 1, limit screw holes 513 are opened on the inner wall connecting blocks 512, limit screw rods 514 are inserted into the limit screw holes 513, a number of anti-displacement slots 515 are symmetrically opened on both sides of the bottoms of the first beam bridge deck 3 and the second beam bridge deck 4, and the ends of the limit screw rods 514 all extend into the anti-displacement slots 515.

[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that both the first fixed connection block 501 and the second fixed connection block 502 are located on the side edges near the bottom of the first beam bridge deck 3 and the second beam bridge deck 4.

[0030] So that the side edges of two adjacent first beam bridge decks 3 and second beam bridge decks 4 can be fixedly connected by the connecting screw 503 and the fixing nut 504 inserted into the first fixed connection block 501 and the second fixed connection block 502.

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the connecting perforation 511 and the limiting screw hole 513 are located on the same vertical line.

[0032] So that it is more convenient for the user to push the limiting screw 514 and insert it into the connecting perforation 511.

[0033] Embodiment 4: The difference between this embodiment and Embodiment 1 is that a connecting block facilitating rotation is provided at the end of the limiting screw 514.

[0034] So that it is more convenient for the user to rotate the limiting screw 514.

[0035] In this embodiment, since the formwork support of the existing steel box concrete composite beam bridge deck often uses beam-column type supports to support each bridge deck, and the tight connection between each group of beam bridge decks is poor. Furthermore, when the beam bridge deck undergoes lateral displacement, it is difficult for the bottom support frame to fix it, so that the gap between the beam bridge decks gradually becomes larger, posing a greater potential safety hazard in use.

[0036] In summary, in specific implementation, by providing a panel auxiliary formwork support assembly 5 at the bottom of the first beam bridge deck 3 and the second beam bridge deck 4, when the user reconnects the adjacent sides of the first beam bridge deck 3 and the second beam bridge deck 4, the user can insert two connecting screws 503 through the first fixed connection block 501 and the second fixed connection block 502 provided at the bottom of the first beam bridge deck 3 and the second beam bridge deck 4, and sleeve the fixing nut 504 on the end of the connecting screw 503. Thus, the adjacent sides of the first beam bridge deck 3 and the second beam bridge deck 4 can be pulled and fixed, effectively preventing displacement of a single first beam bridge deck 3 or second beam bridge deck 4, which may cause extrusion of other connecting screws.

[0037] Meanwhile, steel beam connecting rods 506 are provided at the bottoms of the first fixed connection block 501 and the second fixed connection block 502. The bottom ends of the steel beam connecting rods 506 are inserted into the side mounting frames 508 through fixing screws 509, thereby fixedly connecting the first bridge deck panel 3 and the second bridge deck panel 4 to the first I-shaped steel beam 1 and the second I-shaped steel beam 2 respectively once again. Thus, while the first I-shaped steel beam 1 and the second I-shaped steel beam 2 support the first bridge deck panel 3 and the second bridge deck panel 4, the connection stability is enhanced once again. The top end of the limit screw 514 inserted into the limit screw hole 513 can penetrate through the connection perforation 511 and be inserted into the anti-displacement slot 515.

[0038] Therefore, the installation of the first bridge deck panel 3 and the second bridge deck panel 4 placed on the tops of the first I-shaped steel beam 1 and the second I-shaped steel beam 2 is more stable. By inserting the end of the limit screw 514 into the anti-displacement slot 515, the bottoms of the first bridge deck panel 3 and the second bridge deck panel 4 can be limited effectively again, effectively preventing the first bridge deck panel 3 and the second bridge deck panel 4 from displacing on the first I-shaped steel beam 1 and the second I-shaped steel beam 2.

Claims

1. A steel box concrete composite beam bridge deck formwork, comprising a first I-shaped steel beam (1), characterized in that: A second I-shaped steel beam (2) is arranged on the side of the first I-shaped steel beam (1), a first beam bridge panel (3) and a second beam bridge panel (4) are arranged on the top of the first I-shaped steel beam (1) and the second I-shaped steel beam (2), and the bottoms of the first beam bridge panel (3) and the second beam bridge panel (4) are connected to the first I-shaped steel beam (1) and the second I-shaped steel beam (2) via a panel auxiliary formwork assembly (5); The panel auxiliary formwork assembly (5) comprises two groups of first fixed connection blocks (501) fixedly arranged on both sides of the bottom end of the second beam bridge panel (4), the sides of the first fixed connection blocks (501) are each provided with a second fixed connection block (502), the second fixed connection blocks (502) are each connected to the first beam bridge panel (3), two connecting screws (503) are inserted through the first fixed connection block (501) and the second fixed connection block (502), the ends of the connecting screws (503) are sleeved with fixing nuts (504), the bottoms of the first fixed connection block (501) and the second fixed connection block (502) are each provided with a bottom mounting frame (505), and a steel beam is arranged inside the bottom mounting frame (505). A connecting rod (506), the end of the steel beam connecting rod (506) is rotatably connected to the bottom mounting frame (505) through an inserted rotating plug shaft (507), two side mounting frames (508) are symmetrically arranged on the sides of the first I-shaped steel beam (1) and the second I-shaped steel beam (2), the bottom ends of the steel beam connecting rod (506) are inserted into the side mounting frames (508), the bottom ends of the steel beam connecting rod (506) are connected to the side mounting frames (508) through an inserted fixing screw (509), the end of the fixing screw (509) is sleeved with a fastening nut (510), and a plurality of connecting through holes (511) are evenly opened on the sides of the tops of the first I-shaped steel beam (1) and the second I-shaped steel beam (2).

2. The steel box concrete composite beam bridge deck formwork according to claim 1, characterized in that: A plurality of inner wall connection blocks (512) are evenly arranged on the sides of the second I-shaped steel beam (2) and the first I-shaped steel beam (1), and limiting screw holes (513) are provided on the inner wall connection blocks (512), and limiting screw rods (514) are inserted into the limiting screw holes (513).

3. The steel box concrete composite beam bridge deck formwork according to claim 2, characterized in that: A plurality of anti-displacement slots (515) are symmetrically provided on both sides of the bottom surface of the first beam bridge deck (3) and the second beam bridge deck (4), and the ends of the limiting screws (514) extend into the anti-displacement slots (515).

4. The steel box concrete composite beam bridge deck formwork according to claim 3, characterized in that: The first fixed connection block (501) and the second fixed connection block (502) are both located on the sides of the first beam bridge deck (3) and the second beam bridge deck (4) close to the bottom ends.

5. The steel box concrete composite beam bridge deck formwork according to claim 4, characterized in that: The connecting through hole (511) and the limiting screw hole (513) are located on the same vertical line.

6. The steel box concrete composite beam bridge deck formwork according to claim 5, characterized in that: The end of the limiting screw (514) is provided with a connecting block for easy rotation.

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