Construction method for reinforcing and repairing concrete cover beam through external prestressing

The invention relates to a construction method for reinforcing and repairing a concrete cover beam through external prestress. The construction method comprises the steps of bridge reinforcing construction, hanging type construction platform installation, anchoring steel plate fixing, upper steel strand installation, transverse prestress installation and construction platform dismantling. The method has the beneficial effects that the original bridge is reinforced by adopting the newly added foundation and the reinforced steel pipe columns, and the overall stability of the bridge is improved through a temporary support span reduction technology; the hanging type construction platform is adopted to provide a construction platform for reinforcing the bent cap, so that the safety of the construction operation is improved; local transverse prestress and longitudinal prestress are combined to reinforce the cover beam, and the overall strength of the cover beam structure is improved. 本发明涉及一种体外预应力加固修复混凝土盖梁的施工方法，包括步骤