Experiment on seismic performance of concrete filled steel tubular arch-rib under multi-shaking-tables

摘要

During the last two decades, a large number of concrete filled steel tubular (CFST) arch bridges had been built in China. However, the experiment on seismic performance of CFST structural arch rib was seldom conducted especially under spatial wave excitation. In order to understand the seismic behaviors of CFST arch bridges, a scaled 1:10 model of CFST arch-rib was constructed with fully compensative mass. The test was carried out uniform and non-uniform excitations under a Multi-shaking-tables array system in Fuzhou University, China. Artificial waves and several recorded ground motions were employed to identify the basically dynamic behavior and to evaluate the elastic and plastic seismic performance of this arch-rib model.