Shaking Table Test Study on Seismic Performance of Super Large Navigable Steel Structure Aqueduct

Abstract

The Pihe river main canal aqueduct of the Yangtze-to-Huaihe water diversion project is the world’s largest span navigable aqueduct, which adopts a complex steel structure system combined with truss beam and arch. Its cross-section is large, and the weight of water inside is twice that of the structure, which leads to a significant FSI effect under earthquake action. In addition, friction pendulum isolation supports are installed to extend the structural period and consume seismic energy. All the above factors make the dynamic response under earthquake action complex, and the actual seismic performance needs to be verified. In this paper, the overall test model of the aqueduct is manufactured by reasonable similarity ratio design, which is verified to be equivalent with the prototype structure. Through shaking table tests, the effects of FSI and isolation supports in seismic response are analyzed, and the overall seismic performance of the aqueduct is verified.