Nonlinear Behaviors of Submerged Floating Tunnels under Seismic Excitation
The Submerged Floating Tunnels are one new type of infrastructure, representing a challenge in structural engineering, both on the theoretical and operational fields.In this paper, a 3D finite element analysis procedure is developed accounting for material and geometrical nonlinearities, soil-structure interaction and multiple-support seismic excitation.A comparison between dynamic response in case of elastic and inelastic material behavior of the anchor bars is given, which shows the beneficial effect of this source of energy dissipation.Furthermore, the effects of introducing dissipation devices for restraining the tunnel axial motion have been investigated as well.Besides this, the earthquake transmission through water (seaquake) is here introduced as an additional hydrodynamic loading on the tunnel.The ensuing increase of loading in the tunnel indicates that a significant role is played by this loading source and highlights the need of further investigations on seaquake effects.
multiple-support seismic excitation passive control seaquake Archimedes bridges
Chunxia SHI Marco DOMANESCHI Luca MARTINELLI
Department of Structural Engineering,Politecnico di Milano,Piazza Leonardo da Vinci 32,20133,Milan,Italy
国际会议
上海
英文
1124-1127
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）