Nonlinear Dynamic Response Analysis of Coastal Pile Foundation Bridge Pier Subjected to Current, Wave and Earthquake Actions: As a model of civilian live

Abstract

A numerical study of the linear and nonlinear dynamic behavior of a bridge pier subjected simultaneously to water loads during earthquakes is presented. A typical coastal bridge pier with an elevated pile-cap foundation was taken as an example structure. The analysis was executed using Three-dimensional (3D) Finite Elements (FE) with localized nonlinearities in DIANA Software. It is explored how the pier's shear and moment reactions would change structurally in response to a combination of currents, waves, and earthquakes. In both the linear and nonlinear domains, the FE model's correctness was validated. The findings suggest that: (1) structural non-linearity cannot be ignored in dynamic analyses of structures in marine environments; (2) the DIANA FE model is a useful alternative approach for both linear and nonlinear dynamic analyses; and (3) structural non-linearity cannot be neglected in dynamic analyses of bridges exposed to powerful earthquakes that exceed 0.6g.