A three-way bolted steel box girder lug mounting precision control method

CN122169437APending Publication Date: 2026-06-09CHINA RAILWAY BAOJI BRIDGE YANGZHOU CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY BAOJI BRIDGE YANGZHOU CO LTD
Filing Date
2026-04-17
Publication Date
2026-06-09

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Abstract

The application discloses a three-way bolted steel box girder lug mounting precision control method, which comprises the following steps: 1) height direction control; 2) transverse control; 3) longitudinal control; 4) structure avoidance; 5) hole group processing optimization; and 6) progressive screwing process and the like. The application constructs a height-transverse-longitudinal three-dimensional integrated precision control system, realizes three-way bolted connection of the angle type stiffener, realizes installation deviation of less than or equal to 1 mm, and solves problems such as poor adhesion, hole group misplacement and screwing interference and the like.
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