Steel reinforced concrete crane beam
By introducing steel bone structure into the crane beam and using the combination of profiled steel and concrete, the problems of susceptibility to corrosion and span of reinforced concrete crane beams in strong corrosion environments are solved, and a crane beam design with high load bearing capacity, low self-weight and durability are achieved.
Patent Information
- Application Number
- CN202422040753.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Existing reinforced concrete crane beams are prone to corrosion in a highly corrosive environment, with large spans leading to heavy components, difficult construction and easy to produce temperature cracks, making it difficult to meet the strength and durability requirements of crane beams.
A steel-bone concrete structure is adopted. By installing a steel beam, a steel bell leg and a steel column in the concrete member, and connected by bolts and nails, combined with a weldable mechanical connection sleeve or connecting plate, a steel-bone concrete crane beam is formed to increase bonding shear force and stability, and a rail-mounted anchor bolt and a secondary grouting layer are provided on the upper flange.
It improves the bearing capacity, stability and durability of crane beams, reduces the weight and construction difficulty, ensures smooth driving, avoids safety hazards, and realizes the design concept of strong columns and weak beams.
Smart Images
Figure CN223073781U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crane girders, and particularly relates to a steel reinforced concrete crane girder. Background Art
[0002] The incineration treatment of domestic waste can reduce the landfill volume of primary waste, improve the urban waste treatment level, and further promote the resourceization, harmlessness and reduction of waste treatment. At present, the incineration treatment of domestic waste has become the main treatment method in China. The waste crane is a bridge crane used to grab the waste in the waste storage tank into the feed hopper of the incinerator. Its working environment is C5 strong corrosion, which has strong corrosiveness to the steel structure crane girder. Therefore, the crane girder generally selects a reinforced concrete crane girder. Due to process requirements, a frame column needs to be removed at the boiler, resulting in a large span at the column-removing position of the crane girder. If a conventional reinforced concrete beam is used, problems such as too large a cross-section of the crane girder, large self-weight of the component, difficult high-position construction, and easy generation of temperature cracks will occur. Content of the Utility Model
[0003] Purpose of the utility model: The purpose of the utility model is to provide a steel reinforced concrete crane girder with strong bearing capacity, not easy to deform and good durability in a strong corrosion environment.
[0004] Technical solution: A steel reinforced concrete crane girder of the utility model includes a concrete component and steel bars. The concrete component includes a concrete beam, a concrete corbel, and a frame column. A steel component is arranged in the concrete component. The steel component includes a profiled steel beam arranged in the concrete beam, a steel corbel arranged in the concrete corbel, and a profiled steel column arranged in the frame column. The profiled steel beam is connected to the profiled steel column through the steel corbel.
[0005] Further, stud bolts are arranged on the contact surfaces of the concrete component and the steel component.
[0006] Further, the longitudinally stressed steel bars and the steel component are connected by a weldable mechanical connection sleeve or a connecting plate.
[0007] Further, the longitudinally stressed steel bars and the steel component are welded with equal strength by a weldable mechanical connection sleeve or a connecting plate.
[0008] Further, after the steel component is formed, concrete is poured to form a steel reinforced concrete crane girder.
[0009] Further, the upper flange of the steel reinforced concrete crane girder is provided with track installation anchor bolts and a secondary grouting layer.
[0010] Further, the track installation anchor bolts are welded to the upper flange of the steel skeleton by penetrated stud welding.
[0011] Beneficial effects: Compared with the prior art, the utility model has the following advantages: (1) In the utility model, the longitudinally stressed steel bars and the steel members adopt weldable mechanical connection sleeves or connecting plates, which facilitates the penetration of the longitudinal steel bars through the joints; (2) Studs are arranged on the contact surface between the profiled steel and the concrete in the utility model, which increases the bond shear force between the concrete and the profiled steel, ensures the connection tightness of the members, and thus improves the overall stability and safety; (3) A secondary grouting layer is arranged on the upper surface of the steel skeleton crane beam in the utility model, which improves the density and horizontal accuracy of the track installation surface and ensures smooth running of the crane; (4) The track installation anchor bolts in the utility model are welded to the upper flange of the steel skeleton by penetrating stud welding, which facilitates the installation of the crane track; (5) The profiled steel in the utility model extends into the adjacent spans. The negative bending moment at the support of the steel skeleton concrete crane beam is relatively large. The extension of the profiled steel into the adjacent spans can avoid potential safety hazards caused by sudden changes in the strength of the continuous beam; (6) Profiled steel is added to the corbel and the frame column in the utility model, which improves the strength and stiffness of the corbel and the frame column and realizes the conceptual design of strong columns and weak beams, and strong joints and weak members. Description of the Drawings
[0012] Figure 1 It is a schematic sectional view of the overall structure of the utility model;
[0013] Figure 2 It is a schematic sectional view of the beam structure of the utility model. Detailed Implementation Modes
[0014] The technical solution of the utility model will be further described below with reference to the drawings. A steel skeleton concrete crane beam of the utility model is as Figure 1-2 shown, which includes a concrete member and steel bars. The concrete member includes a concrete beam 1, a concrete corbel 2, and a frame column 3. Steel members are arranged in the concrete member. The steel members include a profiled steel beam 4 arranged in the concrete beam 1, a steel corbel 5 arranged in the concrete corbel 2, and a profiled steel column 6 arranged in the frame column 3. The profiled steel beam 4 is connected to the profiled steel column 6 through the steel corbel 5. Studs 7 are arranged on the contact surfaces between the concrete member and the steel member. The longitudinally stressed steel bars and the steel member adopt strong welding such as weldable mechanical connection sleeves or connecting plates, which can be completed in the factory. After the steel member and the steel bars are installed in place, concrete with good workability and large slump is poured to form a steel skeleton concrete crane beam. The upper flange of the steel skeleton concrete crane beam is provided with a track installation anchor bolt 8 and a secondary grouting layer 9. The track installation anchor bolt 8 is welded to the upper flange of the steel skeleton by penetrating stud welding. The steel member extends into the adjacent spans.
[0015] The utility model adopts the steel skeleton concrete structure form, makes full use of the advantages of steel and concrete materials, enables the member to have higher strength and stiffness, can greatly improve the normal section bearing capacity, inclined section bearing capacity, and bending stiffness of the member, and has achieved the purpose of reducing the section height of the crane beam, reducing the self-weight, saving the project cost, improving the durability, and reducing the maintenance cost.
[0016] The embodiments described above are for the purpose of facilitating the understanding of the present disclosure and are not intended to limitatively interpret the present disclosure. The present disclosure can be changed or improved without departing from its gist, and its equivalents are also included in the present disclosure. That is, the embodiments appropriately designed and changed by those skilled in the art are also included in the scope of the present disclosure as long as they have the features of the present disclosure. The elements and their configurations etc. possessed by the embodiments are not limited to the illustrated cases and can be appropriately changed.
Claims
1. A steel reinforced concrete crane girder, comprising a concrete member and steel bars, wherein the concrete member includes a concrete beam (1), a concrete corbel (2), and a frame column (3), and is characterized in that, The concrete member is provided with steel members, and the steel members include a profiled steel beam (4) arranged in a concrete beam (1), a steel bracket (5) arranged in a concrete bracket (2), and a profiled steel column (6) arranged in a frame column (3). The profiled steel beam (4) is connected to the profiled steel column (6) through the steel bracket (5).
2. The reinforced concrete crane beam according to claim 1, characterized in that, Studs (7) are arranged on the contact surfaces between the concrete member and the steel members.
3. The steel reinforced concrete crane beam according to claim 1, characterized in that, The longitudinally stressed reinforcement bars are connected to the steel members by weldable mechanical connection sleeves or connection plates.
4. A reinforced concrete crane beam according to claim 3, characterized in that, The longitudinally stressed reinforcement bars are welded to the steel members by weldable mechanical connection sleeves or connection plates with equal strength welding.
5. The steel reinforced concrete crane girder according to claim 4, characterized in that, After the steel members are formed, concrete is poured to form a steel reinforced concrete crane beam.
6. The steel reinforced concrete crane beam according to claim 1, characterized in that, The upper flange of the steel reinforced concrete crane beam is provided with track installation anchor bolts (8) and a secondary grouting layer (9).
7. A reinforced concrete crane girder according to claim 6, characterized in that, The track installation anchor bolts (8) are welded to the upper flange of the steel skeleton by penetrated stud welding.
8. A reinforced concrete crane girder according to claim 1, characterized in that, The steel members extend into adjacent spans.