One-way anchor rod suitable for reinforcing concrete arch bridge

The utility model discloses a one-way anchor rod suitable for reinforcing a concrete arch bridge. The one-way anchor rod comprises an anchoring section, a connecting screw rod and a fixing section, the anchoring section is an expansion bolt, and the anchoring section is detachably connected with the connecting screw rod; the connecting screw rod is detachably connected with the fixed section; and the fixed section comprises a screw rod and a nut assembly. The expansion bolt of the anchoring section can be used for solving the problem that a traditional arch bridge reinforcing type screw cannot be fixed, meanwhile, the fixing section can be dismantled and reused after reinforcing is completed, and the anchoring section and the connecting screw are reserved in concrete to serve as reinforcing steel bars, so that the stress performance of the concrete can be enhanced. 本实用新型公开了一种适用于混凝土拱桥加固的单向锚杆，包括锚固段、连接螺杆和固定段；所述锚固段为膨胀螺栓，所述锚固段与连接螺杆通过可拆卸方式连接；所述连接螺杆与所述固定段通过可拆卸方式连接；所述固定段包括螺杆和螺母组件。本实用新型可以利用锚固段的膨胀螺栓解决拱桥加固式传统螺杆无法固定的难题，同