Three-Dimensional Lattice Model Analysis of RC Columns Subjected to Seismic Loads

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Three-Dimensional Lattice Model Analysis of RC Columns Subjected to Seismic Loads

Author(s): T. Miki and J. Niwa

Publication: Special Publication

Volume: 237

Issue:

Appears on pages(s): 241-258

Keywords: 3D lattice model; biaxial behavior; buckling of reinforcement; energy dissipation capacity; nonlinear dynamic analysis; RC columns; seismic performance evaluation; seismic response

Date: 8/1/2006

Abstract:
Analytical studies for the biaxial behavior of RC columns with square cross section subjected to earthquake ground motion are presented. The objective of this study is to estimate the effect of biaxial bending on RC columns. This study extends an existing 2D lattice model to three dimensions. The 3D lattice model can offer reasonable prediction of the shear-carrying capacity of RC members. By comparing analytical results with the experimental results of shaking table tests on two RC columns, it has been confirmed that the 3D lattice-model analysis can reasonably predict the biaxial behavior of RC columns subjected to the bilateral ground motion. In addition, it is found that analysis considering the buckling of reinforcement can accurately predict the seismic response and energy dissipation capacity of RC columns.