Universal supporting structure for incremental launching construction of steel box girder

By adopting a universal support structure in the over-pushing construction of steel box beams, including temporary piers, distribution beams, pad beams and flange columns, the problems of unstable support structure and large steel plate usage in the prior art are solved, and more efficient and safe over-pushing construction is achieved.

CN222666581UActive Publication Date: 2025-03-25CHINA METALLURGICAL CONSTR ENG GRP
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Patent Information

Application Number
CN202421346156.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-13
Publication Date
2025-03-25
Estimated Expiration
2034-06-13

AI Technical Summary

Technical Problem

The lack of unified construction standards in the over-push construction of existing steel box girders, resulting in unstable support structure, inconvenient use of jacks, large amount of steel plates, troublesome stacking or unloading, and difficult to control construction costs.

Method used

A universal support structure is adopted, including temporary piers, transverse and longitudinal distribution beams, pad beams, flange columns and pad beam pads. Through the segmented design of flange columns and the flexible arrangement of pad beam pads, the support height and cushion height are adjusted, and turnover versatility and construction efficiency are improved.

Benefits of technology

The turnover versatility of auxiliary structural parts in the push-up operation is improved, the pad structure is optimized, the construction difficulty and cost are reduced, and the quality and construction safety of steel box beams are ensured.

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Abstract

The utility model discloses a universal supporting structure for pushing construction of a steel box girder. The universal supporting structure comprises a temporary pier fixed at a preset position, a transverse distribution beam supported by the temporary pier, a longitudinal distribution beam supported by the transverse distribution beam and a bearing beam located between the steel box girder to be pushed and the longitudinal distribution beam. The flange plate columns are supported by the longitudinal distribution beams, and the supporting height of a preset target is adjusted by increasing or decreasing the number of the flange plate columns in the height direction; a plurality of bearing beam cushion blocks are further included, and the height of the cushion layer is adjusted by increasing or decreasing the bearing beam cushion blocks in the height direction. The steel box girder pushing device further comprises an upper plug cushion block with a functional cushion layer, the turnover universality of auxiliary structural parts in the pushing operation can be improved, the cushion plate structure is optimized, the construction difficulty is reduced, the construction cost is controlled, and meanwhile the pushing quality of the steel box girder is better guaranteed.
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