A fully modular and detachable bridge beam lowering system and its construction method

CN122304284APending Publication Date: 2026-06-30YCIH STEEL STRUCTURE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YCIH STEEL STRUCTURE CO LTD
Filing Date
2026-04-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In traditional beam lowering operations, the welding and cutting of jacks to steel box girders can cause damage, and the cutting of the supporting structure below is inconvenient and results in serious material waste, affecting construction efficiency and safety.

Method used

The system employs an upper inverted jack adjustment unit and a lower modular flange support unit. By connecting the non-destructive suspension jack to the modular flange, welding and cutting are eliminated. Standard flange modules are bolted together to replace steel pipe columns, and combined with horizontal bracing, a stable support structure is formed.

Benefits of technology

It achieves non-destructive suspension and vertical fine adjustment of the jack, avoiding welding damage and fire hazards. The materials can be reused, reducing construction costs and improving construction efficiency and safety.

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Abstract

This invention discloses a fully modular and detachable bridge beam lowering system and its construction method, including: an upper inverted jack adjustment unit (1) and a lower modular flange support unit, and pier embedded parts (4); the upper inverted jack adjustment unit includes: multiple lifting rings (11) fixedly set on the lower cylinder of the jack, a turnbuckle structure (12), an ear plate (13) fixedly welded to the bottom of the steel box girder, and a shackle (14) connecting the ear plate and the turnbuckle structure; the upper end of the turnbuckle structure is connected to the ear plate through the shackle, and the lower end is connected to the lifting ring; during construction, the flange module is removed layer by layer by alternately lifting and retracting the jack, so as to achieve the smooth lowering of the steel box girder. This invention combines the upper non-destructive suspension fine adjustment with the lower modular non-cutting support, which can realize the non-destructive suspension and precise fine adjustment of the jack, and the lower support structure can be adjusted flexibly without hot work and without cutting, and all components can be reused. The construction is safe, efficient and environmentally friendly, and has high application value.
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