小半径曲线桥大角度转体施工设计及施工：大同市平城街西延线跨铁路桥匝道桥

本文报道了一座半径为60m的曲线桥进行148°转体的设计与施工过程。由于曲线桥半径较小，转体时偏心力矩较大，因此在结构设计时通过墩梁固结并设置高强预应力锚杆、转体结构设置预偏心、墩顶梁体内填充铁砂混凝土等措施，平衡偏心力矩。该桥的曲线半径与转体角度均创造了桥梁转体的世界纪录。

Design and Construction of a High-Angle Swivel for a Small-Radius Curve Ramp Bridge Over Railway on the Pingcheng Street West Extension Line in Datong City

This paper presents the design and construction process of a 148° swivel for a curved bridge with a radius of 60 meters. Due to the small radius of the curved bridge, there is a significant imbalance moment during swivel. Therefore, in the structural design, measures such as pier-beam connection, installation of high-strength prestressed anchor rods, pre-eccentricity setting for the swivel structure, and filling of iron sand concrete inside the box beam at the top of the pier are adopted to balance the moment. Both the curve radius and the swivel angle of the bridge set world records for bridge swivel construction.