Coupling Vibration Model of Submerged Floating Tunnel in Space

Abstract Submerged floating tunnel is a new type of traffic building structure under water surface which can span various courses. The has the characteristics high flexibility and low damping so that vibration problems would be caused by hydrodynamic excitation. Long-term could affect safety durability structure. Therefore, it necessary to accurately understand dynamic behavior This paper proposes simplified three-dimensional model study for Based on Galerkin method mode superposition with boundary conditions, differential equations were established in Generalized coordinate system. $$Newmark - \beta$$ N e w m a r k - β used solve equations. Then, adopting FEA (Finite Element Analysis) establish finite element submerged tunnel. result verified accuracy present model. parameter analysis, following conclusions are: displacement coordination at connection position affects cables’ greatly compared tube. Current horizontal component wave have significant impact response While vertical influences cable greatly.