Passive/active WIB for mitigating traffic-induced vibrations

This paper concerns developing a mitigation method against traffic-induced ground vibrations. First, a passive use of honeycomb shaped wave impeding barrier (WIB) is presented for vibration reduction for a caisson foundation of a traffic viaduct. Secondly, an active use of the WIB is proposed, which is driven to generate another wave. This procedure utilizes wave interference phenomenon to cancel out the source wave by another wave or lessen the total response peak values in the propagation zone. Since the apparatus that produces the counter wave needs a limited space so that it suits the urban built-up situation. However, the precise functioning/ manipulation of the apparatus is required to get satisfactory results. The present computation work proves the fundamental information how the effective mitigation can be achieved by this actively controlled WIB.