Box-shaped steel bridge pier with root portion provided with stiffening energy dissipation wall plates

The utility model discloses a box-shaped steel bridge pier with the root portion provided with stiffening energy dissipation wall plates. The box-shaped steel bridge pier comprises a box-shaped steel bridge pier body and further comprises an energy dissipation body. The energy dissipation body comprises four high-strength steel flat plates and four low-yield-point steel flat plates, the four high-strength steel flat plates form a square frame in an enclosing mode, every two adjacent high-strength steel flat plates are fixed in a welded mode and connected together, openings are formed in the four high-strength steel flat plates, the four low-yield-point steel flat plates are correspondingly embedded in the four openings respectively, the low-yield-point steel flat plates and the high-strength steel flat plates are detachably connected together, and all the high-strength steel flat plates and the box-shaped steel bridge pier body are fixed together in a welded mode. The box-shaped steel bridge pier has the advantages that the high-strength steel flat plates can have the functions of a stressed framework of the box-shaped steel bridge pier, enough bearing capacity and enough rigidity can be provided for the bridge pier, the limit elastic strain value of the bridge pier is large, yield energy dissipation of the stiffening low-yield-point steel flat plates can be guaranteed so that the box-shaped steel bridge pier can have good ductility and excellent anti-seismic performance, and the box-shaped steel bridge pier has the advantages of being fast to construct and facilitating post-earthquake damage detection and fast restoration.