It is necessary to explore a reasonable suspender tension scheme for special-shaped pedestrian arch bridges to achieve a reasonable stress state at each stage of bridge construction.The Yunxi bridge is taken as an research ob-ject,which is a special-shaped steel arch pedestrian bridge with a rib and double cable planes.The principles of the tensioning schemes for suspenders are determined,as well as the different tensioning schemes for suspenders based on the inherent characteristics of the bridge.The finite element model of the bridge is established,and the construction stages analysis of the bridge is conducted to explore the impact of various tensioning schemes for suspenders on the stresses and deformations of the main components of bridge during the construction stages.The tension control forces of the suspenders at each construction stage are obtained by the forward iteration method.The results show that from the perspective of forces and deformations of arch rib,the tensioning schemes of suspenders from both arch ends to the middle of the arch rib are more beneficial to the bridge structure.The measurement of initial tensioning double sus-penders is more suitable for the schemes of tensioning suspenders from the middle of arch rib to both arch ends.Fur-thermore,the scheme of tensioning the inner and outer suspenders simultaneously is more conducive to the stress and deformation of the arch rib and main girder than the scheme of tensioning the outer suspenders first and then the inner suspenders.Additionally,the scheme of tensioning outer suspenders first and then inner suspenders with double bat-ches reduces the peak stresses and deformations of the main components and makes the transition of changes smoother,which is better than the schemes of tensioning inner and outer suspenders simultaneously with single batch.Notably,the design cable forces of the inner suspenders are relatively smaller and should not be tensioned in batches,while the design cable forces of the outer suspenders are slightly larger,and can be tensioned in two batches.
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