Seismic response of submerged floating tunnel tether |
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Authors: | Zhi-bin Su Sheng-nan Sun |
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Institution: | 1. School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, 252059, China
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Abstract: | A mathematical equation for vibration of submerged floating tunnel tether under the effects of earthquake and parametric excitation is presented. Multi-step Galerkin method is used to simplify this equation and the fourth-order Runge-Kuta integration method is used for numerical analysis. Finally, vibration response of submerged floating tunnel tether subjected to earthquake and parametric excitation is analyzed in a few numerical examples. The results show that the vibration response of tether varies with the seismic wave type; the steady maximum mid-span displacement of tether subjected to seismic wave keeps constant when parametric resonance takes place; the transient maximum mid-span displacement of tether is related to the peak value of input seismic wave acceleration. |
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