Butterfly-shaped bridge deck slab structure with leveling function

Abstract

The utility model relates to a butterfly-shaped bridge deck slab structure with a leveling function. The butterfly-shaped bridge deck slab structure comprises a deck slab body and a leveling device. The panel body comprises a main rib section, flat plate sections and flange plates, in the left-right direction, the two flat plate sections are located on the two sides of the main rib section, the two flange plates are located on the outer sides of the two flat plate sections respectively, and the thickness of the main rib section and the thickness of the flange plates are larger than the thickness of the flat plate sections; a front leveling groove and a rear leveling groove are formed in one flange plate, and two sets of leveling devices are correspondingly installed; the leveling device comprises a high-strength screw, a threaded sleeve and a positioning steel plate, the positioning steel plate is fixed to the lower end of the threaded sleeve, the positioning steel plate and the threaded sleeve are integrally embedded below the leveling groove, the high-strength screw is screwed into the threaded sleeve and penetrates through the positioning steel plate, the lower end of the high-strength screw extends out of the flange plate, and the upper end of the high-strength screw is located in the leveling groove. The bridge deck slab structure is optimized, the strength is guaranteed, meanwhile, the self weight of the structure is greatly reduced, the manufacturing difficulty is reduced, and the bridge deck slab structure belongs to an assembly type bridge structure.

Description

Technical Field

[0001] The utility model relates to an assembled bridge structure, in particular to a butterfly-shaped bridge deck structure with a leveling function. Background Art

[0002] The bridge deck, also known as the roadway deck, is the main load-bearing member of the bridge superstructure. The bridge deck directly bears the wheel pressure of vehicles and transfers the vehicle load to the beam-type members below. Prefabricated components refer to steel, wood or concrete components prefabricated according to design specifications. Prefabricated bridge decks are also a type of prefabricated components. They are generally prefabricated in factories and assembled on site, which can greatly improve the efficiency of bridge construction and reduce the impact on traffic.

[0003] Existing prefabricated bridge decks are generally flat structures, which are hoisted on site and installed on beam-type components. However, they have the following disadvantages: 1. The structure has different thicknesses without taking into account the functions of each section. The overall structure is thicker, so the overall weight is larger. Usually, the connection parts with the beam structure need to be thicker, and the parts where the leveling structure is installed also need to be thicker, so the overall structure is thick. 2. The leveling structure is relatively complex, and the number of parts embedded in the prefabricated bridge deck is large, and the manufacturing process is cumbersome; at the same time, multiple parts need to be coaxially fixed, and the alignment is also difficult when embedded.

[0004] Therefore, it is necessary to optimize the structure of precast bridge deck. Utility Model Content

[0005] In view of the technical problems existing in the prior art, the purpose of the utility model is to provide a butterfly-shaped bridge deck structure with a structural optimization and a leveling function, which greatly reduces the dead weight of the structure while ensuring the strength and also reduces the difficulty of manufacturing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A butterfly-shaped bridge deck structure with a leveling function comprises a deck body and a leveling device; the deck body comprises a main rib section, a flat plate section, and a flange plate, in the left-right direction, the two flat plate sections are located on both sides of the main rib section, the two flange plates are respectively located on the outsides of the two flat plate sections, and the thicknesses of the main rib section and the flange plate are both greater than the flat plate section; one flange plate is provided with two leveling grooves, one in front and one in the back, corresponding to which two sets of leveling devices are installed; the leveling device comprises a high-strength screw, a threaded sleeve, and a positioning steel plate, the positioning steel plate is fixed to the lower end of the threaded sleeve, the positioning steel plate and the threaded sleeve are integrally pre-buried below the leveling groove, the high-strength screw is screwed into the threaded sleeve and passes through the positioning steel plate, the lower end of the screw extends out of the flange plate, and the upper end is located in the leveling groove.

[0008] As a preferred embodiment, the leveling groove is a square groove opened on the upper surface of the flange plate, and the positioning steel plate and the threaded sleeve are welded into a whole, and the whole is fixed on the steel cage in the panel body.

[0009] As a preferred embodiment, the flange plate includes a flange body located on the inner side and an edge portion located on the outer side, and the thickness of the edge portion decreases from the inner side to the outer side; and the leveling groove is arranged in the flange body.

[0010] As a preferred embodiment, four through-going reserved holes are provided in the main rib segment, and four through-going reserved holes are provided in the flange body of the flange plate, and the reserved holes are used for connection with the beam-type components.

[0011] As a preferred embodiment, a plurality of shear structures are arranged on the top of the beam-type component, the shear structures extend into the reserved holes, and the reserved holes are filled with self-compacting materials to fix the shear structures.

[0012] As a preferred embodiment, the reserved holes located in the main rib section are rectangular reserved holes, and the reserved holes located in the flange plate are square reserved holes.

[0013] As a preference, the flower groove is arranged above the edge portion.

[0014] As a preferred embodiment, the thickness of the main rib segment is 200-250 mm.

[0015] As a preferred embodiment, the panel body is formed by casting high-strength ceramsite concrete.

[0016] As a preferred embodiment, a butterfly-shaped bridge deck structure with a leveling function is a prefabricated structure.

[0017] The utility model has the following advantages:

[0018] 1. Optimize the bridge deck structure and design it into a structure of different thicknesses according to the different functions of each section, which greatly reduces the deadweight of the structure while ensuring strength.

[0019] 2. The structure of the leveling device is optimized, and a streamlined structure consisting of three parts is designed. Fewer parts can reduce the difficulty of production. When pre-embedding, it is only necessary to ensure the accurate positioning of the threaded sleeve.

[0020] 3. The leveling groove at the upper end of the high-strength screw is designed to provide enough space for operating the high-strength screw.

[0021] 4. Design a reserved hole structure and connect it to the beam member through shear structure and self-compacting material, which is easy to install and reliable.

[0022] 5. The edge of the flange plate adopts a structure with reduced thickness, because about 50 cm on both sides above the panel body are generally designed as the installation position of the flower trough, and the guardrails on both sides serve as the inner walls of the flower trough and are subject to less force, which simplifies the structure and reduces the weight of the components while ensuring the structural performance.

[0023] 6. High-strength ceramsite concrete is used, which is light in weight and high in strength. Compared with the PC structure of the same grade, the weight can be reduced by more than 20% to 30%.

[0024] 7. High-strength expanded clay concrete is used, which has good thermal insulation and seismic resistance.

[0025] 8. The overall structure is prefabricated with simple structure and reliable performance. It adopts standardized design, factory production and assembly construction, which effectively saves construction progress and accelerates industrial transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the bridge deck structure.

[0027] Figure 2 It is a structural schematic diagram of the leveling device.

[0028] Figure 3 This is the main view of the bridge deck structure.

[0029] Figure 4 It is a side view of the bridge deck structure.

[0030] In the figure, 1 is the main rib section, 2 is the rectangular reserved hole, 3 is the square reserved hole, 4 is the flange plate, 5 is the leveling device, 6 is the high-strength screw, 7 is the threaded sleeve, and 8 is the positioning steel plate. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0032] A butterfly-shaped bridge deck structure with a leveling function comprises a deck body and a leveling device. The deck body comprises a main rib section, a flat plate section, and a flange plate. In the left-right direction, the two flat plate sections are located on both sides of the main rib section, and the two flange plates are respectively located on the outside of the two flat plate sections. The thickness of the main rib section and the flange plate is greater than that of the flat plate section. One flange plate is provided with two leveling grooves, one in front and one in the back, corresponding to which two sets of leveling devices are installed. The upper end surface of the deck body is a plane. The leveling device comprises a high-strength screw, a threaded sleeve, and a positioning steel plate. The positioning steel plate is fixed to the lower end of the threaded sleeve. The positioning steel plate and the threaded sleeve are integrally embedded below the leveling groove, wherein the upper end of the threaded sleeve slightly protrudes from the bottom of the leveling groove, and the positioning steel plate is located at the lower end of the flange plate. The high-strength screw is screwed into the threaded sleeve and passes through the positioning steel plate. The lower end of the screw extends out of the flange plate, and the upper end is located in the leveling groove.

[0033] The leveling groove is a square groove opened on the upper surface of the flange plate. The positioning steel plate and the threaded sleeve are welded as a whole. Before the panel body is cast, the whole is fixed on the steel cage inside the panel body.

[0034] The flange plate comprises a flange body located at the inner side and an edge portion located at the outer side, wherein the thickness of the edge portion decreases from the inner side to the outer side; and the leveling groove is arranged in the flange body.

[0035] Four through-going reserved holes are provided in the main rib section, and four through-going reserved holes are provided in the flange body of the flange plate, and the reserved holes are used for connection with the beam-type components.

[0036] A plurality of shear structures are arranged on the top of the beam-type member, and the shear structures extend into the reserved holes. The reserved holes are filled with self-compacting materials to fix the shear structures, so that the bridge deck structure and the bridge span structure form an integral force.

[0037] The reserved holes located in the main rib section are rectangular reserved holes, and the reserved holes located in the flange plate are square reserved holes.

[0038] Planters for municipal landscaping are provided above the edging.

[0039] The thickness of the main rib section is 200-250mm. The main rib section mainly plays the role of connection, fixing and stabilization.

[0040] The panel body is cast in an automated workshop using high-strength ceramsite concrete. High-strength ceramsite concrete is made by mixing raw materials such as high-strength ceramsite, ceramic sand, cement, silica fume, water reducer and other raw materials. Preferably, high-strength ceramsite concrete is mixed with 420kg of high-strength 800-grade ceramsite, 730kg of ceramic sand, 570kg of cement, 36kg of silica fume, 18.24% of water reducer and 150kg of water. When mixing the ceramsite concrete, the high-strength 800-grade ceramsite is pre-soaked in water for 8 hours to avoid floating of the ceramsite when mixing the ceramsite concrete. The bulk density of high-strength 800-grade ceramsite is 700-800kg / m 3 , cylinder pressure strength is not less than 4MPa, 1 hour water absorption rate is not more than 10%, softening coefficient is not more than 0.8, particle coefficient is not more than 2, mud content is not more than 2%. The combustion performance grade of this lightweight aggregate concrete is A2, and the refractoriness reaches more than 1000℃. This lightweight aggregate concrete has a small elastic modulus, which can effectively enhance the deformation capacity of the structure.

[0041] A butterfly-shaped bridge deck structure with a leveling function is a prefabricated structure. The manufacturing method is: pre-weld and fix the threaded sleeve and the positioning steel plate. Preferably, the positioning steel plate is a steel gasket with a through hole for the high-strength screw to pass through. When the steel cage is manufactured, the threaded sleeve and the positioning steel plate are fixed to the steel cage as a whole, and the position of the threaded sleeve is ensured to be accurate, and then the high-strength screw is screwed in, and then the high-strength ceramsite concrete is cast and formed, and the leveling groove and the reserved hole are reserved during the casting.

[0042] The leveling device is used to adjust the accuracy and elevation during on-site construction. When leveling, you only need to rotate the high-strength screws, and the four high-strength screws make the panel body in the designed position.

[0043] The utility model adopts an optimized panel body and a leveling device, and has the characteristics of light weight, high compressive strength, small shrinkage creep, and stable and controllable expansion rate.

[0044] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A butterfly-shaped bridge deck structure with a leveling function, characterized in that: It includes a panel body and a leveling device; the panel body includes a main rib section, a flat plate section, and a flange plate. In the left and right directions, the two flat plate sections are located on both sides of the main rib section, and the two flange plates are respectively located on the outsides of the two flat plate sections. The thicknesses of the main rib section and the flange plate are both greater than the flat plate section; a flange plate is provided with two leveling grooves, one in front and one in the back, and two sets of leveling devices are installed accordingly; the leveling device includes a high-strength screw, a threaded sleeve, and a positioning steel plate. The positioning steel plate is fixed at the lower end of the threaded sleeve, and the positioning steel plate and the threaded sleeve are pre-buried as a whole below the leveling groove. The high-strength screw is screwed into the threaded sleeve and passes through the positioning steel plate, the lower end of the screw extends out of the flange plate, and the upper end is located in the leveling groove.

2. A butterfly-shaped bridge deck structure with a leveling function according to claim 1, characterized in that: The leveling groove is a square groove opened on the upper surface of the flange plate. The positioning steel plate and the threaded sleeve are welded into a whole, and the whole is fixed on the steel cage in the panel body.

3. A butterfly-shaped bridge deck structure with leveling function according to claim 1, characterized in that: The flange plate comprises a flange body located at the inner side and an edge portion located at the outer side, wherein the thickness of the edge portion decreases from the inner side to the outer side; and the leveling groove is arranged in the flange body.

4. A butterfly-shaped bridge deck structure with a leveling function according to claim 3, characterized in that: Four through-going reserved holes are provided in the main rib section, and four through-going reserved holes are provided in the flange body of the flange plate, and the reserved holes are used for connection with the beam-type components.

5. A butterfly-shaped bridge deck structure with leveling function according to claim 4, characterized in that: A plurality of shear structures are arranged on the top of the beam-type component, and the shear structures extend into the reserved holes, and the reserved holes are filled with self-compacting materials to fix the shear structures.

6. A butterfly-shaped bridge deck structure with leveling function according to claim 4, characterized in that: The reserved holes located in the main rib section are rectangular reserved holes, and the reserved holes located in the flange plate are square reserved holes.

7. A butterfly-shaped bridge deck structure with leveling function according to claim 3, characterized in that: The flower groove is arranged above the edge portion.

8. A butterfly-shaped bridge deck structure with a leveling function according to claim 1, characterized in that: The thickness of the main rib section is 200-250mm.

9. A butterfly-shaped bridge deck structure with a leveling function according to claim 1, characterized in that: The panel body is cast by high-strength ceramsite concrete.

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