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无平衡重转体采用锚固体系代替平衡重平转法施工,充分利用了锚固体系、转动体系和位控体系构成了平衡的转体系统,适用于大跨径或转体重量大的拱桥。转体分为整体转体和上、下游拱箱分别转体,整体转体系桥将拱圈分为两半跨同步转体合拢;上、下游分箱转体系上、下游拱箱分别同步转体合拢。本文对无平衡重转体施工在大跨径拱桥上的应用技术进行了总结。
The unbalanced re-rotating body adopts the anchoring system instead of the counterbalanced swivel construction to make full use of the anchoring system, the rotating system and the position control system to form a balanced swivel system, which is suitable for an arch bridge with a large span or a large swivel weight. Swivel is divided into the overall swivel and the upper and lower arch boxes were swivel, the overall system of the bridge to turn the arch ring is divided into two halves cross synchronous swivel closed; on the downstream box system, the downstream arch box were synchronized swivel close. This article summarizes the application techniques of unbalanced re-swivel construction on long-span arch bridge.