Flexural vibration reduction of hinged periodic beam-foundation systems

摘要

The hinged connection and periodic structure are introduced to the classic beam-foundation systems, so called as hinged periodic beam-foundation systems, to reduce the flexural vibrations. The cell-hinged, segment-hinged and identically hinged periodic beam-foundation systems are proposed. The frequency dispersion relation and frequency response of these systems with soil foundation are calculated and analyzed. The study shows that, the existence of hinges helps greatly to obtain lower and wider band gaps (BGs) with stronger attenuation. Finally, a combination beam-foundation system composed by the cell-hinged and identically hinged periodic structures is proposed to obtain super wide BG. (c) 2015 Elsevier Ltd. All rights reserved.