Seismic analysis of tunnel-form reinforced concrete structures subjected to low-intensity earthquake actions

Abstract

Multi-story reinforced concrete tunnel form buildings are one of the common structural types in regions prone to high seismic risk due to the inherent earthquake resistance of the buildings and ease of construction. Despite their good performance during earthquakes and the abundance of such structures scattered worldwide, current seismic codes and design provisions provide insufficient guidelines for their seismic design. As a compensatory measure, a series of modal and nonlinear dynamic analyses are conducted by emphasizing the characteristic dynamic behavior of tunnel-form buildings under low-intensity seismic actions. This research performs a detailed 3-D finite element analysis on a 16-story tunnel-form reinforced concrete structure using the advanced FE program ABAQUS CAE. Internal seismic damage in the critical region was presented.