【摘要】 为探究不中断交通下临时吊索在人行悬索桥换索中的应用，以一座自锚式人行悬索桥为背景，基于临时吊索对比分析单点更换法、三点更换法和五点更换法，结合有限元模型，模拟换索时吊索张拉荷载，依据索力变化及主缆位移，研究人行悬索桥不同吊点吊索受力性能及临时吊索传力效率，确保换索过程中桥梁线性满足要求。研究结果表明，随着临时吊索数量的增加，临时吊索索力被分配到同侧相邻吊索上且索力逐渐减小；单点更换法张拉结束时临时吊索总索力略大于吊索初始索力，传力效率可达98.88%；在更换桥梁一侧吊索时，与原吊索索力相比，非换索侧吊索索力无变化；临时吊索的传力效率与吊索长度有关，且吊索长度越长，临时吊索传力效率越低。更多还原

【Abstract】 Taking a self-anchored pedestrian suspension bridge as the background, based on the single-point replacement method, three-point replacement method and five-point replacement method, combined with the finite element model, the tension load of the suspension cables during cable replacement was simulated. According to the changes in cable force and the displacement of the main cable, the force performance of the suspension cables at different lifting points of the pedestrian suspension bridge and the force transmission efficiency of the temporary suspension cables were studied to ensure that the linearity of the bridge meets the requirements during the cable replacement process. Results show that as the number of temporary suspenders grows, their forces are distributed to adjacent suspenders on the same side and decline. After single-point tensioning, the total force of temporary suspenders is a bit more than the initial force, achieving 98.88% transfer efficiency. When replacing one-side suspenders, the forces on the non-replacement side stay unchanged. The transfer efficiency of temporary suspenders is related to suspender length; longer ones have lower efficiency.更多还原