Embedded part structure of steel-concrete hybrid beam top plate

Abstract

The utility model relates to the technical field of bridge construction, in particular to a steel-concrete hybrid beam top plate embedded part structure which comprises a top plate connecting piece arranged at the junction of a top plate on the upper side of a concrete beam web and the web, the top plate connecting piece is in a long strip shape, and the width of the top plate connecting piece is gradually increased or locally increased in the direction from a concrete beam to a steel beam. And a positioning piece is arranged at the position, close to the concrete beam, of the top plate connecting piece. The utility model has the advantages that: the block pre-embedded top plate 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 gradually-changed blocks are adopted at the rear part, so that the stress characteristic is met; the construction method is simple in construction and controllable in the later period, 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 top plate embedded component 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 the precision. Summary of the invention

[0004] The purpose of the utility model is to provide a steel-concrete hybrid beam top plate embedded part structure based on the above-mentioned deficiencies of the prior art, adopting a block embedded top plate instead of an integral embedded steel beam, reducing the lifting weight, increasing the overall embedded length, and adopting a gradual block at the rear to meet the force characteristics.

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

[0006] A steel-concrete hybrid beam top plate embedded part structure is arranged at the connection surface position of the steel-concrete joint section, and is characterized by: comprising a top plate connecting part arranged at the junction of the upper top plate and the web of the concrete beam web, the top plate connecting part is in the shape of an elongated strip, and the width of the top plate connecting part gradually increases or partially increases from the concrete beam to the steel beam, and the top plate connecting part is provided with a positioning part at a position adjacent to the concrete beam.

[0007] The positioning member is connected and fixed to the top plate reinforcement of the concrete beam to form an integral structure, and the positioning member is used for positioning and fixing the top plate connecting member.

[0008] The top plate connecting piece is provided with a horizontal shear key.

[0009] The top plate connector is provided with shear nails at positions corresponding to the concrete parts.

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

[0011] Figure 1 It is a plan 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 1-8 in the figure respectively represent: top plate connecting part 1, top plate reinforcement 2, connection point 3, horizontal shear key 4, shear nail 5, steel beam web 6, positioning part 7, and connection surface 8.

[0014] Example: Figure 1 As shown, the steel-concrete hybrid beam top plate embedded part structure in this embodiment is arranged at the junction of the concrete beam and the steel beam, including a top plate connector 1, which is embedded in the concrete beam and adjacent to the steel beam. Further, the top plate connector 1 in this embodiment is arranged at the junction of the top plate on the web and the web to better transfer stress.

[0015] Specifically, if Figure 1 As shown, in this embodiment, the top plate connector 1 mainly bears the horizontal force generated by the bending moment, and thus mainly bears the bending moment, and does not bear the vertical force. The top plate connector 1 is in a long strip shape to better transmit the bending moment, and increases the width near the steel beam to gradually transfer the bending moment from the concrete beam to the steel beam.

[0016] A positioning piece 7 is provided at the portion of the top plate connector 1 adjacent to the concrete beam. A portion of the positioning piece 7 is connected to the top plate reinforcement 2 at the connection point 3 by welding or mechanical means to form a stable bracket and a recessed hole is provided. Another portion is welded to the steel beam and a protrusion is provided. After the two portions are combined, it can be ensured that the steel beam can be fixed on the embedded device through the positioning piece 7.

[0017] like Figure 1 As shown, a horizontal shear key 4 is provided on one side of the top plate connector 1 to transmit horizontal shear force and top plate bending moment. A shear nail 5 is provided on the other side of the top plate connector 1 to enhance its bonding with the concrete after the concrete part is poured to ensure subsequent rigidity and strength.

[0018] like Figure 1 As shown, the connection surface 8 is used to connect with the steel beam to form a whole, thereby ensuring the strength and rigidity of the entire structure.

[0019] During construction, this embodiment includes the following construction sequence:

[0020] Construction of top plate connector 1 → Fixing positioning piece 7 on top plate reinforcement 2 → Welding of top plate connector 1 and positioning piece 7 → Casting of concrete in sections → Connecting top plate connector 1 and steel beam → Casting of post-casting section.

[0021] 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 steel-concrete hybrid beam top plate embedded part structure, arranged at the connection surface of the steel-concrete joint section, characterized in that: It includes a top plate connecting piece arranged at the junction of the upper top plate and the web of the concrete beam web. The top plate connecting piece is in the shape of an elongated strip. The width of the top plate connecting piece gradually increases or partially increases from the concrete beam to the steel beam. The top plate connecting piece is provided with a positioning piece at a position adjacent to the concrete beam.

2. The embedded part structure of the top plate of a steel-concrete hybrid beam according to claim 1 is characterized in that: The positioning member is connected and fixed to the top plate reinforcement of the concrete beam to form an integral structure, and the positioning member is used for positioning and fixing the top plate connecting member.

3. The steel-concrete hybrid beam top plate embedded part structure according to claim 1 is characterized by: The top plate connecting piece is provided with a horizontal shear key.

4. The embedded part structure of the top plate of a steel-concrete hybrid beam according to claim 1 is characterized in that: The top plate connector is provided with shear nails at positions corresponding to the concrete parts.

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