基于无索鞍预偏的悬索桥施工控制计算分析

结合青龙山公园一号桥——地锚式空间索面悬索桥，介绍了该桥选用无索鞍预偏施工方法的特定背景，并论述了该种施工方法施工控制计算的特点。利用RM非线性有限元分析软件，建立有限元模型进行施工阶段仿真分析，得出控制参数，并根据计算结果，分析该施工方法的控制特点。研究丰富了无索鞍预偏施工方法的计算成果，对同类桥梁的施工控制计算有一定的参考意义。

Construction analysis of suspension bridge by the non-displaced of cable saddle mothod

An economical and effective construction approach, non-displaced of cable saddle method, was introduced to obtain the accurate state of suspension bridges during the construction procedure. As for the suspension bridges with intermediate span length, this approach can provide simpler saddle structures and is more convenient to use than the conventional methods. With the help of RM, a professional bridge engineering software, models of final state and construction state of the bridge were built and solved and the behaviors of the force in these states were gained. It is expected that the proposed method can be extended to analyzing some of the similar suspension bridges.