Steel-concrete hybrid beam web connecting piece structure

Abstract

The utility model relates to the technical field of bridge construction, in particular to a steel-concrete hybrid beam web connecting piece structure which comprises web connecting pieces embedded in the position of a concrete beam web, the web connecting pieces comprise an upper web connecting piece, a middle web connecting piece and a lower web connecting piece, and the upper web connecting piece, the middle web connecting piece and the lower web connecting piece are connected from a concrete beam to a steel beam. The width of each web connecting piece is gradually increased or locally increased, and a positioning piece is arranged at the position, close to the concrete beam, of each web connecting piece. The utility model has the advantages that the block pre-embedded web connecting piece is adopted to replace an integral pre-embedded steel beam, the hoisting weight is reduced, the integral pre-embedded length is increased, and the gradually-changed blocks are adopted at the rear part, so that the stress characteristic is met; the construction is simple, the later period is controllable, and the construction quality of the steel-concrete combined section can be better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel-concrete hybrid beam web connector structure. Background Art

[0002] Steel-concrete hybrid beams use steel beams to replace concrete in the span to reduce the deadweight of the structure. They have good economic value in the span range of 160m-300m and are used in both highway and railway fields.

[0003] The steel beam part of the steel-concrete hybrid beam generally adopts an integral structure, which is heavy to hoist and difficult to control in terms of precision. Summary of the invention

[0004] The purpose of the utility model is to provide a steel-concrete hybrid beam web connection structure based on the above-mentioned deficiencies of the prior art, which adopts block-embedded webs to replace integral embedded steel beams, reduce the lifting weight, increase the overall embedded length, and adopt gradual blocking at the rear to meet the force characteristics.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A web connector structure for a steel-concrete hybrid beam is arranged at the connection surface of a steel-concrete joint section, and is characterized in that it includes a web connector buried at the web position of a concrete beam, the web connector includes an upper web connector, a middle web connector and a lower web connector, and the width of each web connector gradually increases or partially increases from the concrete beam to the steel beam, and each web connector is provided with a positioning piece at a position adjacent to the concrete beam.

[0007] The web connector is connected to the web reinforcement of the concrete beam via a positioning member.

[0008] The web connector is provided with a vertical shear key on the side adjacent to the steel beam.

[0009] The web connector is provided with a shear key at a position corresponding to the concrete beam.

[0010] The advantages of the utility model are: using block-embedded web connectors instead of integrally embedded steel beams, reducing the lifting weight, increasing the overall embedded length, and using gradual block at the rear to meet the force characteristics; simple construction, controllable in the later stage, and can better ensure the construction quality of the steel-concrete combined section. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic elevation view of the utility model. DETAILED DESCRIPTION

[0012] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0013] like Figure 1 As shown, the marks 1-12 in the figure respectively represent: upper web connector 1, middle web connector 2, lower web connector 3, connection point 4, vertical shear key 5, steel beam web 6, web reinforcement 7, shear member 8, positioning member 9, top plate 10, bottom plate 11, and connection surface 12.

[0014] Example: Figure 1 As shown, the web connector structure of the steel-concrete hybrid beam in this embodiment is arranged at the junction of the concrete beam and the steel beam, including an upper web connector 1, a middle web connector 2, and a lower web connector 3. Each web connector is buried in the concrete beam and adjacent to the steel beam; the upper web connector 1, the middle web connector 2, and the lower web connector 3 are evenly spaced along the height direction of the web and correspond to each group of web steel bars 7 in the concrete beam.

[0015] Furthermore, the upper web connector 1 is arranged at the web near the top plate 10, and transmits bending moment through the shear key 8 and simultaneously transmits shear force through the vertical shear key 5. The upper web connector 1 is positioned and connected to a group of web reinforcements 7 of the concrete beam adjacent to the top plate 10 through the positioning member 9, and the connection between the two is completed by welding or mechanical connection at the connection point 4. The shear key 8 is arranged on one side of the concrete beam. The vertical shear member 5 is arranged on the side adjacent to the web 6 of the steel beam.

[0016] The lower web connector 3 is arranged at the web near the bottom plate 11, which is mirror-symmetrical with the upper web connector 1 in the elevation, and also transmits bending moment through the shear key 8 and shear force through the vertical shear key 5. The lower web connector 3 is positioned and connected with a group of web reinforcements 7 of the concrete beam near the bottom plate 11 through the positioning member 9, and the connection between the two is completed by welding or mechanical connection at the connection point 4. The shear key 8 is arranged on one side of the concrete beam. The vertical shear member 5 is arranged on the side of the web 6 near the steel beam.

[0017] The middle web connector 2 is arranged between the upper web connector 1 and the lower web connector 3, which also corresponds to the position between the top plate 10 and the bottom plate 11, and mainly transmits shear force through the vertical shear key 54. The middle web connector 2 is directly fixedly connected to a group of web reinforcements 7 in the middle of the web for temporary positioning.

[0018] In this embodiment, if Figure 1 As shown, the width of each web connector in the direction from the concrete beam to the steel beam is partially enlarged to better transmit the shear force.

[0019] like Figure 1As shown, the connection surface 12 is used to connect with the steel beam to form a whole, thereby ensuring the strength and rigidity of the entire structure.

[0020] During construction, this embodiment includes the following construction sequence:

[0021] Construction of upper web connector 1, middle web connector 2 and lower web connector 3 → Fix positioning pieces 9 on the web reinforcement 7 corresponding to upper web connector 1 and lower web connector 3 → Weld upper web connector 1 and lower web connector 3 to their respective corresponding positioning pieces 9, weld middle web connector 2 directly to a group of web reinforcement 7 in the middle of the web → Pour concrete in sections → Connect upper web connector 1, middle web connector 2 and lower web connector 3 to steel beams → Pour post-cast sections.

[0022] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A web connector structure of a steel-concrete hybrid beam, arranged at the connection surface of a steel-concrete joint section, characterized in that: It includes a web connector buried in the web position of the concrete beam, the web connector includes an upper web connector, a middle web connector and a lower web connector, and the width of each web connector gradually increases or partially increases from the concrete beam to the steel beam, and each web connector is provided with a positioning piece at a position adjacent to the concrete beam.

2. The web connector structure of a steel-concrete hybrid beam according to claim 1, characterized in that: The web connector is connected to the web reinforcement of the concrete beam via a positioning piece.

3. The web connector structure of a steel-concrete hybrid beam according to claim 1, characterized in that: The web connector is provided with a vertical shear key on the side adjacent to the steel beam.

4. The web connector structure of a steel-concrete hybrid beam according to claim 1, characterized in that: The web connector is provided with a shear key at a position corresponding to the concrete beam.

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