Research on the Tie Cable Replacement Method of Half-through Tied-Arch Bridge

The tie cable of the half-through tied-arch bridge generally uses external prestressed cables, which need to be replaced regularly similarly cables and suspenders, but there is very little research in this area at present. Aiming a method replace for kind bridge, study takes third Lingjiang had damage cable, as an example. Based on whether temporary force-replacement structure, eight replacement schemes are designed. Firstly, process each scheme simulated by finite-element model, influence upper lower structures analyzed. Then, according analysis results, were compared selected, best was determined. Finally, based scheme, design construction structure given. results show that significantly impacts piles. internal forces pile arch rib change greatly with non-substitution method. Adopting substitution can not only ensure structural safety also improve speed, replacing one symmetrically both sides proved best. This provide reference bridge.