Comparative study of dynamic response of monolithic and rocking columns under earthquake accelerations using finite element analysis

Abstract

Rocking column is one of the types of Seismic Isolation system (also known as Kinematic Base Isolator), which is a high grade, either free standing or centrally post tensioned, concrete column with curved faces of column which are discontinuous in nature. In the present work, a comparative study of dynamic response is carried out between Monolithic and Rocking columns using ABAQUS Software. The main objective of the work is to analyse a monolithic RCC column and free-standing rocking RCC column and compare the results depending upon the stress & strain characteristics when subjected to horizontal acceleration. After analysis, it was found that rocking column maintains its structural integrity with possible face-edge crushing failures.