自锚式悬索与斜拉组合体系桥梁换索模型试验研究

Test of Cable Replacement Model of Self-anchored Suspension and Cable-stayed Combination Bridge

以某独塔双索面自锚式悬索与斜拉组合体系桥梁为对象,建立换索试验模型,分析了自锚式悬索与斜拉组合体系桥梁在更换斜拉索过程中的力学行为、几何变形特征及结构的安全性。验证了换索工程的可行性。有针对性地指出了换索时应注意的问题,为实桥换索的实施提供必要的技术支持。

By taking a self-anchored suspension and cable-stayed combination bridge with single tower and double cable planes as the research object,the test model of cable replacement was built up.Through the analysis of experimental results,the mechanical behavior and deformation regularity of self-anchored suspension and cable-stayed combination bridge during cable replacement were obtained and the structural safety was also analyzed.The result indicates that the method is correct and the cable replacement is feasible.Some problems needing attention were pointed out,which provides necessary technical support for cable replacement.