Pinghu Civic Center is mainly comprised of three parts. The first part is hemispherical lattice girder made from 70m span steel arch and place truss. The steel structure bearing is mainly located on the concrete column. It adopts partial rigid connection and partial hinged connection for the bearing. The second part is the cantilever truss supported by the concrete beam and columns and adopts hinged connection. The third part is comprised of steel columns and large cantilever fan-shaped lattice girders. Steel columns adopt rigid connection. The platform adopts primary and secondary truss framework system with large structure span.