Effects of Pounding and Fluid–Structure Interaction on Seismic Response of Long-Span Deep-Water Bridge with High Hollow Piers

Submarine pipelines are described as the lifeblood of offshore oil and it is crucial to ensure the seismic safety of the submarine pipelines. Based on the fluid-structure interaction numerical analysis method and by using finite element software ADINA, the analysis models of the free long-span submarine flexible pipelines under earthquakes were established. By employing dynamic time-history method, the influences of fluid-structure interaction on the seismic response of the submarine pipelines were researched. The results showed that the peak normal stress and the peak displacement of submarine pipelines’ mid-span considering the influences of the fluid-structure interaction are greater than those without considering the influences, and the influences of the fluid-structure interaction on the seismic response of the submarine pipelines will increase with the increase of the submarine pipelines‘ diameter.

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Effects of Fluid-Structure Interaction on Nonlinear Seismic Response of Deep-Water Hollow Bridge Pier

2020 International Conference on Intelligent Transportation, Big Data & Smart City (ICITBS) ◽

10.1109/icitbs49701.2020.00063 ◽

2020 ◽

Author(s):

Zheng Wei ◽

Yulin Deng ◽

Xiong Ge

Keyword(s):

Seismic Response ◽

Deep Water ◽

Fluid Structure Interaction ◽

Bridge Pier ◽

Fluid Structure ◽

Structure Interaction ◽

Nonlinear Seismic Response

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Seismic Response of Bridge Pier in Deep Water Considering close Fluid-Structure Interaction Effects

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.1803 ◽

2011 ◽

Vol 243-249 ◽

pp. 1803-1810

Author(s):

Zhi Hua Wang ◽

Chong Shi Gu ◽

Guo Xing Chen

Keyword(s):

Seismic Response ◽

Deep Water ◽

Fluid Structure Interaction ◽

Internal Force ◽

Water Levels ◽

Bridge Pier ◽

Force Response ◽

Fluid Structure ◽

Structure Interaction ◽

Displacement Response

Based on the Navier-Stokes equations which are set up with the arbitrary Lagrange-Euler description, a finite element model considering close fluid-structure interaction (FST) is established to analyze the seismic response of bridge piers in the deep water. The influence of close FSI on the bridge pier is analyzed including the relative displacement, shear force and bending moment. In addition, the close FSI and its effects are discussed with respect to different water levels. The results of the case study indicate that the displacement and internal force will become larger obviously when the FSI is considered. Effects of the close FSI on seismic response of the pier are related to the frequency characteristics of the input earthquake wave. The larger the peak displacement of input earthquake wave, the larger the FSI effects on the displacement response of the pier are and the smaller the FSI effects on the internal force response of the pier. Additionally, the effect of the water level on internal force response of the pier is more remarkable than that on the displacement response of the pier.

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