Compatible multi-hole cross combination adaptive segmental beam bridge machine and construction method thereof

By coordinating the ultra-long triangular truss main beam with the four central support legs, the bridge erecting machine can achieve adaptive and seamless switching within a large span range of 40m to 70m. This solves the problems of low construction efficiency and high safety risks of existing bridge erecting machines in large span and multi-span combination conditions, and improves the flexibility and economy of construction.

CN121853488BActive Publication Date: 2026-05-26POLY CHANGDA ENGINEERING CO LTD
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Patent Information

Application Number
CN202610315763.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-03-16
Publication Date
2026-05-26
Estimated Expiration
2046-03-16

AI Technical Summary

Technical Problem

Existing bridge erecting machines suffer from insufficient structural rigidity, strength, and stability when facing large spans of 40 to 70 meters and multi-span combinations, resulting in low construction efficiency, high safety risks, and cumbersome disassembly and assembly for equipment span changes.

Method used

It adopts an ultra-long triangular truss main beam and at least four central support legs in coordination, combined with modular design, to achieve adaptive and seamless switching within a large range of 40m to 70m. The main and auxiliary cranes work together to improve assembly accuracy and efficiency.

Benefits of technology

While ensuring high rigidity and structural stability for long-span operations, the variable span process was simplified, the construction cycle was shortened, safety risks were reduced, and the adaptability, safety, and economy of construction were improved.

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Abstract

This invention discloses an adaptive segmental beam bridge erecting machine compatible with multi-span combinations and its construction method. The bridge erecting machine includes: a main beam, comprising: two truss beams and two end cross braces; the truss beams have a triangular cross-section, including connecting sections at both ends and several standard sections between the two connecting sections; a longitudinal track is fixedly provided at the upper end of the truss beam along its length; front and rear support legs are detachably located at the bottom ends of the main beam; a middle support leg is located at the bottom end of the main beam and between the front and rear support legs; there are at least four middle support legs, used to support the main beam and / or drive the main beam to travel along the construction direction; two overhead cranes and two auxiliary cranes are all located at the upper end of the main beam via the longitudinal track and can move back and forth along the construction direction; the two overhead cranes are located between the two auxiliary cranes to collaboratively complete the hoisting of multiple segmental beam blocks. The bridge erecting machine of this invention can achieve adaptive and seamless switching of various complex span combinations.
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